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esp32-mjpeg-multiclient-espcam-drivers
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Anatoli Arkhipenko 4 years ago
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README.md
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# MJPEG Multiclient Streaming Server
## With latest ESP-CAM drivers
### Procedure:
1. Download latest ZIP file from https://github.com/espressif/esp32-camera.git into the esp32-cam subfolder
2. unzip using `unzip -j esp32-cam-master.zip` command. This will place all files in the same folder
**NOTE:** please observe the `-j` flag: the sketch assumes all files are in the same folder.
3. In **esp32-cam.ino** sketch select your camera pin assignment. The choices are:
1. CAMERA_MODEL_WROVER_KIT
2. CAMERA_MODEL_ESP_EYE
3. CAMERA_MODEL_M5STACK_PSRAM
4. CAMERA_MODEL_M5STACK_WIDE
5. CAMERA_MODEL_AI_THINKER
4. Compile the **esp32-cam.ino** sketch using the following settings:
ESP32 Dev Module
CPU Freq: 240
Flash Freq: 80
Flash mode: QIO
Flash Size: 4Mb
Partition: Minimal SPIFFS (or any other that would fit the sketch)
PSRAM: Enabled
### Results:
I was able to run multiple browser windows, multiple VLC windows and connect multiple Blynk video widgets (max: 10) to ESP-EYE chip. The delay on the browser window was almost unnoticeable. In VLC you notice a 1 second delay probably due to buffering. Blynk performance all depends on the phone, so no comments there.
This is incredible considering the size of this thing! The camera on ESP-EYE is actually quite good.
### Enjoy!

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esp32-cam/README.md
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# ESP32 MJPEG Multiclient Streaming Server
This is a simple MJPEG streaming webserver implemented for AI-Thinker ESP32-CAM or ESP-EYE modules.
This is tested to work with **VLC** and **Blynk** video widget.
**This version uses FreeRTOS tasks to enable streaming to up to 10 connected clients**
Inspired by and based on this Instructable: [$9 RTSP Video Streamer Using the ESP32-CAM Board](https://www.instructables.com/id/9-RTSP-Video-Streamer-Using-the-ESP32-CAM-Board/)

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esp32-cam/camera_common.h
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#pragma once
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include "esp_err.h"
#include "esp_intr_alloc.h"
#include "freertos/FreeRTOS.h"
#include "freertos/semphr.h"
#include "freertos/task.h"
#include "esp_camera.h"
#include "sensor.h"
#include "esp_system.h"
#if ESP_IDF_VERSION_MAJOR >= 4 // IDF 4+
#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
#include "esp32/rom/lldesc.h"
#else
#error Target CONFIG_IDF_TARGET is not supported
#endif
#else // ESP32 Before IDF 4.0
#include "rom/lldesc.h"
#endif
typedef union {
struct {
uint8_t sample2;
uint8_t unused2;
uint8_t sample1;
uint8_t unused1;
};
uint32_t val;
} dma_elem_t;
typedef enum {
/* camera sends byte sequence: s1, s2, s3, s4, ...
* fifo receives: 00 s1 00 s2, 00 s2 00 s3, 00 s3 00 s4, ...
*/
SM_0A0B_0B0C = 0,
/* camera sends byte sequence: s1, s2, s3, s4, ...
* fifo receives: 00 s1 00 s2, 00 s3 00 s4, ...
*/
SM_0A0B_0C0D = 1,
/* camera sends byte sequence: s1, s2, s3, s4, ...
* fifo receives: 00 s1 00 00, 00 s2 00 00, 00 s3 00 00, ...
*/
SM_0A00_0B00 = 3,
} i2s_sampling_mode_t;

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esp32-cam/camera_pins.h
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#if defined(CAMERA_MODEL_WROVER_KIT)
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 21
#define SIOD_GPIO_NUM 26
#define SIOC_GPIO_NUM 27
#define Y9_GPIO_NUM 35
#define Y8_GPIO_NUM 34
#define Y7_GPIO_NUM 39
#define Y6_GPIO_NUM 36
#define Y5_GPIO_NUM 19
#define Y4_GPIO_NUM 18
#define Y3_GPIO_NUM 5
#define Y2_GPIO_NUM 4
#define VSYNC_GPIO_NUM 25
#define HREF_GPIO_NUM 23
#define PCLK_GPIO_NUM 22
#elif defined(CAMERA_MODEL_ESP_EYE)
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 4
#define SIOD_GPIO_NUM 18
#define SIOC_GPIO_NUM 23
#define Y9_GPIO_NUM 36
#define Y8_GPIO_NUM 37
#define Y7_GPIO_NUM 38
#define Y6_GPIO_NUM 39
#define Y5_GPIO_NUM 35
#define Y4_GPIO_NUM 14
#define Y3_GPIO_NUM 13
#define Y2_GPIO_NUM 34
#define VSYNC_GPIO_NUM 5
#define HREF_GPIO_NUM 27
#define PCLK_GPIO_NUM 25
#elif defined(CAMERA_MODEL_M5STACK_PSRAM)
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM 15
#define XCLK_GPIO_NUM 27
#define SIOD_GPIO_NUM 25
#define SIOC_GPIO_NUM 23
#define Y9_GPIO_NUM 19
#define Y8_GPIO_NUM 36
#define Y7_GPIO_NUM 18
#define Y6_GPIO_NUM 39
#define Y5_GPIO_NUM 5
#define Y4_GPIO_NUM 34
#define Y3_GPIO_NUM 35
#define Y2_GPIO_NUM 32
#define VSYNC_GPIO_NUM 22
#define HREF_GPIO_NUM 26
#define PCLK_GPIO_NUM 21
#elif defined(CAMERA_MODEL_M5STACK_WIDE)
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM 15
#define XCLK_GPIO_NUM 27
#define SIOD_GPIO_NUM 22
#define SIOC_GPIO_NUM 23
#define Y9_GPIO_NUM 19
#define Y8_GPIO_NUM 36
#define Y7_GPIO_NUM 18
#define Y6_GPIO_NUM 39
#define Y5_GPIO_NUM 5
#define Y4_GPIO_NUM 34
#define Y3_GPIO_NUM 35
#define Y2_GPIO_NUM 32
#define VSYNC_GPIO_NUM 25
#define HREF_GPIO_NUM 26
#define PCLK_GPIO_NUM 21
#elif defined(CAMERA_MODEL_AI_THINKER)
#define PWDN_GPIO_NUM 32
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 0
#define SIOD_GPIO_NUM 26
#define SIOC_GPIO_NUM 27
#define Y9_GPIO_NUM 35
#define Y8_GPIO_NUM 34
#define Y7_GPIO_NUM 39
#define Y6_GPIO_NUM 36
#define Y5_GPIO_NUM 21
#define Y4_GPIO_NUM 19
#define Y3_GPIO_NUM 18
#define Y2_GPIO_NUM 5
#define VSYNC_GPIO_NUM 25
#define HREF_GPIO_NUM 23
#define PCLK_GPIO_NUM 22
#else
#error "Camera model not selected"
#endif

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esp32-cam/esp32-cam.ino
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/*
This is a simple MJPEG streaming webserver implemented for AI-Thinker ESP32-CAM
and ESP-EYE modules.
This is tested to work with VLC and Blynk video widget and can support up to 10
simultaneously connected streaming clients.
Simultaneous streaming is implemented with FreeRTOS tasks.
Inspired by and based on this Instructable: $9 RTSP Video Streamer Using the ESP32-CAM Board
(https://www.instructables.com/id/9-RTSP-Video-Streamer-Using-the-ESP32-CAM-Board/)
Board: AI-Thinker ESP32-CAM or ESP-EYE
Compile as:
ESP32 Dev Module
CPU Freq: 240
Flash Freq: 80
Flash mode: QIO
Flash Size: 4Mb
Partrition: Minimal SPIFFS
PSRAM: Enabled
*/
// ESP32 has two cores: APPlication core and PROcess core (the one that runs ESP32 SDK stack)
#define APP_CPU 1
#define PRO_CPU 0
#include "esp_camera.h"
#include "ov2640.h"
#include <WiFi.h>
#include <WebServer.h>
#include <WiFiClient.h>
#include <esp_bt.h>
#include <esp_wifi.h>
#include <esp_sleep.h>
#include <driver/rtc_io.h>
// Select camera model
//#define CAMERA_MODEL_WROVER_KIT
//#define CAMERA_MODEL_ESP_EYE
//#define CAMERA_MODEL_M5STACK_PSRAM
//#define CAMERA_MODEL_M5STACK_WIDE
#define CAMERA_MODEL_AI_THINKER
#include "camera_pins.h"
#include "home_wifi_multi.h"
//OV2640 cam;
WebServer server(80);
// ===== rtos task handles =========================
// Streaming is implemented with 3 tasks:
TaskHandle_t tMjpeg; // handles client connections to the webserver
TaskHandle_t tCam; // handles getting picture frames from the camera and storing them locally
TaskHandle_t tStream; // actually streaming frames to all connected clients
// frameSync semaphore is used to prevent streaming buffer as it is replaced with the next frame
SemaphoreHandle_t frameSync = NULL;
// Queue stores currently connected clients to whom we are streaming
QueueHandle_t streamingClients;
// We will try to achieve 25 FPS frame rate
const int FPS = 25;
// We will handle web client requests every 50 ms (20 Hz)
const int WSINTERVAL = 50;
// ======== Server Connection Handler Task ==========================
void mjpegCB(void* pvParameters) {
TickType_t xLastWakeTime;
const TickType_t xFrequency = pdMS_TO_TICKS(WSINTERVAL);
// Creating frame synchronization semaphore and initializing it
frameSync = xSemaphoreCreateBinary();
xSemaphoreGive( frameSync );
// Creating a queue to track all connected clients
streamingClients = xQueueCreate( 10, sizeof(WiFiClient*) );
//=== setup section ==================
// Creating RTOS task for grabbing frames from the camera
xTaskCreatePinnedToCore(
camCB, // callback
"cam", // name
4096, // stacj size
NULL, // parameters
2, // priority
&tCam, // RTOS task handle
APP_CPU); // core
// Creating task to push the stream to all connected clients
xTaskCreatePinnedToCore(
streamCB,
"strmCB",
4096,
NULL, //(void*) handler,
2,
&tStream,
APP_CPU);
// Registering webserver handling routines
server.on("/mjpeg/1", HTTP_GET, handleJPGSstream);
server.on("/jpg", HTTP_GET, handleJPG);
server.onNotFound(handleNotFound);
// Starting webserver
server.begin();
//=== loop() section ===================
xLastWakeTime = xTaskGetTickCount();
for (;;) {
server.handleClient();
// After every server client handling request, we let other tasks run and then pause
taskYIELD();
vTaskDelayUntil(&xLastWakeTime, xFrequency);
}
}
// Commonly used variables:
volatile size_t camSize; // size of the current frame, byte
volatile char* camBuf; // pointer to the current frame
// ==== RTOS task to grab frames from the camera =========================
void camCB(void* pvParameters) {
TickType_t xLastWakeTime;
// A running interval associated with currently desired frame rate
const TickType_t xFrequency = pdMS_TO_TICKS(1000 / FPS);
// Mutex for the critical section of swithing the active frames around
portMUX_TYPE xSemaphore = portMUX_INITIALIZER_UNLOCKED;
// Pointers to the 2 frames, their respective sizes and index of the current frame
char* fbs[2] = { NULL, NULL };
size_t fSize[2] = { 0, 0 };
int ifb = 0;
//=== loop() section ===================
xLastWakeTime = xTaskGetTickCount();
for (;;) {
// Grab a frame from the camera and query its size
camera_fb_t* fb = NULL;
fb = esp_camera_fb_get();
size_t s = fb->len;
// If frame size is more that we have previously allocated - request 125% of the current frame space
if (s > fSize[ifb]) {
fSize[ifb] = s * 4 / 3;
fbs[ifb] = allocateMemory(fbs[ifb], fSize[ifb]);
}
// Copy current frame into local buffer
char* b = (char *)fb->buf;
memcpy(fbs[ifb], b, s);
esp_camera_fb_return(fb);
// Let other tasks run and wait until the end of the current frame rate interval (if any time left)
taskYIELD();
vTaskDelayUntil(&xLastWakeTime, xFrequency);
// Only switch frames around if no frame is currently being streamed to a client
// Wait on a semaphore until client operation completes
xSemaphoreTake( frameSync, portMAX_DELAY );
// Do not allow interrupts while switching the current frame
taskENTER_CRITICAL(&xSemaphore);
camBuf = fbs[ifb];
camSize = s;
ifb = (++ifb) & 1; // this should produce 1, 0, 1, 0, 1 ... sequence
taskEXIT_CRITICAL(&xSemaphore);
// Let anyone waiting for a frame know that the frame is ready
xSemaphoreGive( frameSync );
// Technically only needed once: let the streaming task know that we have at least one frame
// and it could start sending frames to the clients, if any
xTaskNotifyGive( tStream );
// Immediately let other (streaming) tasks run
taskYIELD();
// If streaming task has suspended itself (no active clients to stream to)
// there is no need to grab frames from the camera. We can save some juice
// by suspedning the tasks
if ( eTaskGetState( tStream ) == eSuspended ) {
vTaskSuspend(NULL); // passing NULL means "suspend yourself"
}
}
}
// ==== Memory allocator that takes advantage of PSRAM if present =======================
char* allocateMemory(char* aPtr, size_t aSize) {
// Since current buffer is too smal, free it
if (aPtr != NULL) free(aPtr);
size_t freeHeap = ESP.getFreeHeap();
char* ptr = NULL;
// If memory requested is more than 2/3 of the currently free heap, try PSRAM immediately
if ( aSize > freeHeap * 2 / 3 ) {
if ( psramFound() && ESP.getFreePsram() > aSize ) {
ptr = (char*) ps_malloc(aSize);
}
}
else {
// Enough free heap - let's try allocating fast RAM as a buffer
ptr = (char*) malloc(aSize);
// If allocation on the heap failed, let's give PSRAM one more chance:
if ( ptr == NULL && psramFound() && ESP.getFreePsram() > aSize) {
ptr = (char*) ps_malloc(aSize);
}
}
// Finally, if the memory pointer is NULL, we were not able to allocate any memory, and that is a terminal condition.
if (ptr == NULL) {
ESP.restart();
}
return ptr;
}
// ==== STREAMING ======================================================
const char HEADER[] = "HTTP/1.1 200 OK\r\n" \
"Access-Control-Allow-Origin: *\r\n" \
"Content-Type: multipart/x-mixed-replace; boundary=123456789000000000000987654321\r\n";
const char BOUNDARY[] = "\r\n--123456789000000000000987654321\r\n";
const char CTNTTYPE[] = "Content-Type: image/jpeg\r\nContent-Length: ";
const int hdrLen = strlen(HEADER);
const int bdrLen = strlen(BOUNDARY);
const int cntLen = strlen(CTNTTYPE);
// ==== Handle connection request from clients ===============================
void handleJPGSstream(void)
{
// Can only acommodate 10 clients. The limit is a default for WiFi connections
if ( !uxQueueSpacesAvailable(streamingClients) ) return;
// Create a new WiFi Client object to keep track of this one
WiFiClient* client = new WiFiClient();
*client = server.client();
// Immediately send this client a header
client->write(HEADER, hdrLen);
client->write(BOUNDARY, bdrLen);
// Push the client to the streaming queue
xQueueSend(streamingClients, (void *) &client, 0);
// Wake up streaming tasks, if they were previously suspended:
if ( eTaskGetState( tCam ) == eSuspended ) vTaskResume( tCam );
if ( eTaskGetState( tStream ) == eSuspended ) vTaskResume( tStream );
}
// ==== Actually stream content to all connected clients ========================
void streamCB(void * pvParameters) {
char buf[16];
TickType_t xLastWakeTime;
TickType_t xFrequency;
// Wait until the first frame is captured and there is something to send
// to clients
ulTaskNotifyTake( pdTRUE, /* Clear the notification value before exiting. */
portMAX_DELAY ); /* Block indefinitely. */
xLastWakeTime = xTaskGetTickCount();
for (;;) {
// Default assumption we are running according to the FPS
xFrequency = pdMS_TO_TICKS(1000 / FPS);
// Only bother to send anything if there is someone watching
UBaseType_t activeClients = uxQueueMessagesWaiting(streamingClients);
if ( activeClients ) {
// Adjust the period to the number of connected clients
xFrequency /= activeClients;
// Since we are sending the same frame to everyone,
// pop a client from the the front of the queue
WiFiClient *client;
xQueueReceive (streamingClients, (void*) &client, 0);
// Check if this client is still connected.
if (!client->connected()) {
// delete this client reference if s/he has disconnected
// and don't put it back on the queue anymore. Bye!
delete client;
}
else {
// Ok. This is an actively connected client.
// Let's grab a semaphore to prevent frame changes while we
// are serving this frame
xSemaphoreTake( frameSync, portMAX_DELAY );
client->write(CTNTTYPE, cntLen);
sprintf(buf, "%d\r\n\r\n", camSize);
client->write(buf, strlen(buf));
client->write((char*) camBuf, (size_t)camSize);
client->write(BOUNDARY, bdrLen);
// Since this client is still connected, push it to the end
// of the queue for further processing
xQueueSend(streamingClients, (void *) &client, 0);
// The frame has been served. Release the semaphore and let other tasks run.
// If there is a frame switch ready, it will happen now in between frames
xSemaphoreGive( frameSync );
taskYIELD();
}
}
else {
// Since there are no connected clients, there is no reason to waste battery running
vTaskSuspend(NULL);
}
// Let other tasks run after serving every client
taskYIELD();
vTaskDelayUntil(&xLastWakeTime, xFrequency);
}
}
const char JHEADER[] = "HTTP/1.1 200 OK\r\n" \
"Content-disposition: inline; filename=capture.jpg\r\n" \
"Content-type: image/jpeg\r\n\r\n";
const int jhdLen = strlen(JHEADER);
// ==== Serve up one JPEG frame =============================================
void handleJPG(void)
{
WiFiClient client = server.client();
camera_fb_t* fb = esp_camera_fb_get();
if (!client.connected()) return;
client.write(JHEADER, jhdLen);
client.write((char*)fb->buf, fb->len);
esp_camera_fb_return(fb);
}
// ==== Handle invalid URL requests ============================================
void handleNotFound()
{
String message = "Server is running!\n\n";
message += "URI: ";
message += server.uri();
message += "\nMethod: ";
message += (server.method() == HTTP_GET) ? "GET" : "POST";
message += "\nArguments: ";
message += server.args();
message += "\n";
server.send(200, "text / plain", message);
}
// ==== SETUP method ==================================================================
void setup()
{
// Setup Serial connection:
Serial.begin(115200);
delay(1000); // wait for a second to let Serial connect
// Configure the camera
// camera_config_t config;
// config.ledc_channel = LEDC_CHANNEL_0;
// config.ledc_timer = LEDC_TIMER_0;
// config.pin_d0 = Y2_GPIO_NUM;
// config.pin_d1 = Y3_GPIO_NUM;
// config.pin_d2 = Y4_GPIO_NUM;
// config.pin_d3 = Y5_GPIO_NUM;
// config.pin_d4 = Y6_GPIO_NUM;
// config.pin_d5 = Y7_GPIO_NUM;
// config.pin_d6 = Y8_GPIO_NUM;
// config.pin_d7 = Y9_GPIO_NUM;
// config.pin_xclk = XCLK_GPIO_NUM;
// config.pin_pclk = PCLK_GPIO_NUM;
// config.pin_vsync = VSYNC_GPIO_NUM;
// config.pin_href = HREF_GPIO_NUM;
// config.pin_sscb_sda = SIOD_GPIO_NUM;
// config.pin_sscb_scl = SIOC_GPIO_NUM;
// config.pin_pwdn = PWDN_GPIO_NUM;
// config.pin_reset = RESET_GPIO_NUM;
// config.xclk_freq_hz = 20000000;
// config.pixel_format = PIXFORMAT_JPEG;
//
// // Frame parameters: pick one
// // config.frame_size = FRAMESIZE_UXGA;
// // config.frame_size = FRAMESIZE_SVGA;
// // config.frame_size = FRAMESIZE_QVGA;
// config.frame_size = FRAMESIZE_VGA;
// config.jpeg_quality = 12;
// config.fb_count = 2;
static camera_config_t camera_config = {
.pin_pwdn = PWDN_GPIO_NUM,
.pin_reset = RESET_GPIO_NUM,
.pin_xclk = XCLK_GPIO_NUM,
.pin_sscb_sda = SIOD_GPIO_NUM,
.pin_sscb_scl = SIOC_GPIO_NUM,
.pin_d7 = Y9_GPIO_NUM,
.pin_d6 = Y8_GPIO_NUM,
.pin_d5 = Y7_GPIO_NUM,
.pin_d4 = Y6_GPIO_NUM,
.pin_d3 = Y5_GPIO_NUM,
.pin_d2 = Y4_GPIO_NUM,
.pin_d1 = Y3_GPIO_NUM,
.pin_d0 = Y2_GPIO_NUM,
.pin_vsync = VSYNC_GPIO_NUM,
.pin_href = HREF_GPIO_NUM,
.pin_pclk = PCLK_GPIO_NUM,
.xclk_freq_hz = 20000000,
.ledc_timer = LEDC_TIMER_0,
.ledc_channel = LEDC_CHANNEL_0,
.pixel_format = PIXFORMAT_JPEG,
.frame_size = FRAMESIZE_VGA,
.jpeg_quality = 12,
.fb_count = 2
};
#if defined(CAMERA_MODEL_ESP_EYE)
pinMode(13, INPUT_PULLUP);
pinMode(14, INPUT_PULLUP);
#endif
if (esp_camera_init(&camera_config) != ESP_OK) {
Serial.println("Error initializing the camera");
delay(10000);
ESP.restart();
}
// Configure and connect to WiFi
IPAddress ip;
WiFi.mode(WIFI_STA);
WiFi.begin(SSID1, PWD1);
Serial.print("Connecting to WiFi");
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(F("."));
}
ip = WiFi.localIP();
Serial.println(F("WiFi connected"));
Serial.println("");
Serial.print("Stream Link: http://");
Serial.print(ip);
Serial.println("/mjpeg/1");
// Start mainstreaming RTOS task
xTaskCreatePinnedToCore(
mjpegCB,
"mjpeg",
4096,
NULL,
2,
&tMjpeg,
APP_CPU);
}
void loop() {
// loop() runs in the RTOS Idle Task.
// If loop has a chance to run, there is nothing else for the CPU to do
// so we can nap for 1 ms
// esp_sleep_enable_timer_wakeup((uint64_t) 1000);
// esp_light_sleep_start();
}

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
* Example Use
*
static camera_config_t camera_example_config = {
.pin_pwdn = PIN_PWDN,
.pin_reset = PIN_RESET,
.pin_xclk = PIN_XCLK,
.pin_sscb_sda = PIN_SIOD,
.pin_sscb_scl = PIN_SIOC,
.pin_d7 = PIN_D7,
.pin_d6 = PIN_D6,
.pin_d5 = PIN_D5,
.pin_d4 = PIN_D4,
.pin_d3 = PIN_D3,
.pin_d2 = PIN_D2,
.pin_d1 = PIN_D1,
.pin_d0 = PIN_D0,
.pin_vsync = PIN_VSYNC,
.pin_href = PIN_HREF,
.pin_pclk = PIN_PCLK,
.xclk_freq_hz = 20000000,
.ledc_timer = LEDC_TIMER_0,
.ledc_channel = LEDC_CHANNEL_0,
.pixel_format = PIXFORMAT_JPEG,
.frame_size = FRAMESIZE_SVGA,
.jpeg_quality = 10,
.fb_count = 2
};
esp_err_t camera_example_init(){
return esp_camera_init(&camera_example_config);
}
esp_err_t camera_example_capture(){
//capture a frame
camera_fb_t * fb = esp_camera_fb_get();
if (!fb) {
ESP_LOGE(TAG, "Frame buffer could not be acquired");
return ESP_FAIL;
}
//replace this with your own function
display_image(fb->width, fb->height, fb->pixformat, fb->buf, fb->len);
//return the frame buffer back to be reused
esp_camera_fb_return(fb);
return ESP_OK;
}
*/
#pragma once
#include "esp_err.h"
#include "driver/ledc.h"
#include "sensor.h"
#include "sys/time.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Configuration structure for camera initialization
*/
typedef struct {
int pin_pwdn; /*!< GPIO pin for camera power down line */
int pin_reset; /*!< GPIO pin for camera reset line */
int pin_xclk; /*!< GPIO pin for camera XCLK line */
int pin_sscb_sda; /*!< GPIO pin for camera SDA line */
int pin_sscb_scl; /*!< GPIO pin for camera SCL line */
int pin_d7; /*!< GPIO pin for camera D7 line */
int pin_d6; /*!< GPIO pin for camera D6 line */
int pin_d5; /*!< GPIO pin for camera D5 line */
int pin_d4; /*!< GPIO pin for camera D4 line */
int pin_d3; /*!< GPIO pin for camera D3 line */
int pin_d2; /*!< GPIO pin for camera D2 line */
int pin_d1; /*!< GPIO pin for camera D1 line */
int pin_d0; /*!< GPIO pin for camera D0 line */
int pin_vsync; /*!< GPIO pin for camera VSYNC line */
int pin_href; /*!< GPIO pin for camera HREF line */
int pin_pclk; /*!< GPIO pin for camera PCLK line */
int xclk_freq_hz; /*!< Frequency of XCLK signal, in Hz. Either 20KHz or 10KHz for OV2640 double FPS (Experimental) */
ledc_timer_t ledc_timer; /*!< LEDC timer to be used for generating XCLK */
ledc_channel_t ledc_channel; /*!< LEDC channel to be used for generating XCLK */
pixformat_t pixel_format; /*!< Format of the pixel data: PIXFORMAT_ + YUV422|GRAYSCALE|RGB565|JPEG */
framesize_t frame_size; /*!< Size of the output image: FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA */
int jpeg_quality; /*!< Quality of JPEG output. 0-63 lower means higher quality */
size_t fb_count; /*!< Number of frame buffers to be allocated. If more than one, then each frame will be acquired (double speed) */
} camera_config_t;
/**
* @brief Data structure of camera frame buffer
*/
typedef struct {
uint8_t * buf; /*!< Pointer to the pixel data */
size_t len; /*!< Length of the buffer in bytes */
size_t width; /*!< Width of the buffer in pixels */
size_t height; /*!< Height of the buffer in pixels */
pixformat_t format; /*!< Format of the pixel data */
struct timeval timestamp; /*!< Timestamp since boot of the first DMA buffer of the frame */
} camera_fb_t;
#define ESP_ERR_CAMERA_BASE 0x20000
#define ESP_ERR_CAMERA_NOT_DETECTED (ESP_ERR_CAMERA_BASE + 1)
#define ESP_ERR_CAMERA_FAILED_TO_SET_FRAME_SIZE (ESP_ERR_CAMERA_BASE + 2)
#define ESP_ERR_CAMERA_FAILED_TO_SET_OUT_FORMAT (ESP_ERR_CAMERA_BASE + 3)
#define ESP_ERR_CAMERA_NOT_SUPPORTED (ESP_ERR_CAMERA_BASE + 4)
/**
* @brief Initialize the camera driver
*
* @note call camera_probe before calling this function
*
* This function detects and configures camera over I2C interface,
* allocates framebuffer and DMA buffers,
* initializes parallel I2S input, and sets up DMA descriptors.
*
* Currently this function can only be called once and there is
* no way to de-initialize this module.
*
* @param config Camera configuration parameters
*
* @return ESP_OK on success
*/
esp_err_t esp_camera_init(const camera_config_t* config);
/**
* @brief Deinitialize the camera driver
*
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_STATE if the driver hasn't been initialized yet
*/
esp_err_t esp_camera_deinit();
/**
* @brief Obtain pointer to a frame buffer.
*
* @return pointer to the frame buffer
*/
camera_fb_t* esp_camera_fb_get();
/**
* @brief Return the frame buffer to be reused again.
*
* @param fb Pointer to the frame buffer
*/
void esp_camera_fb_return(camera_fb_t * fb);
/**
* @brief Get a pointer to the image sensor control structure
*
* @return pointer to the sensor
*/
sensor_t * esp_camera_sensor_get();
/**
* @brief Save camera settings to non-volatile-storage (NVS)
*
* @param key A unique nvs key name for the camera settings
*/
esp_err_t esp_camera_save_to_nvs(const char *key);
/**
* @brief Load camera settings from non-volatile-storage (NVS)
*
* @param key A unique nvs key name for the camera settings
*/
esp_err_t esp_camera_load_from_nvs(const char *key);
#ifdef __cplusplus
}
#endif
#include "img_converters.h"

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "esp_jpg_decode.h"
#include "esp_system.h"
#if ESP_IDF_VERSION_MAJOR >= 4 // IDF 4+
#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
#include "esp32/rom/tjpgd.h"
#else
#error Target CONFIG_IDF_TARGET is not supported
#endif
#else // ESP32 Before IDF 4.0
#include "rom/tjpgd.h"
#endif
#if defined(ARDUINO_ARCH_ESP32) && defined(CONFIG_ARDUHAL_ESP_LOG)
#include "esp32-hal-log.h"
#define TAG ""
#else
#include "esp_log.h"
static const char* TAG = "esp_jpg_decode";
#endif
typedef struct {
jpg_scale_t scale;
jpg_reader_cb reader;
jpg_writer_cb writer;
void * arg;
size_t len;
size_t index;
} esp_jpg_decoder_t;
static const char * jd_errors[] = {
"Succeeded",
"Interrupted by output function",
"Device error or wrong termination of input stream",
"Insufficient memory pool for the image",
"Insufficient stream input buffer",
"Parameter error",
"Data format error",
"Right format but not supported",
"Not supported JPEG standard"
};
static uint32_t _jpg_write(JDEC *decoder, void *bitmap, JRECT *rect)
{
uint16_t x = rect->left;
uint16_t y = rect->top;
uint16_t w = rect->right + 1 - x;
uint16_t h = rect->bottom + 1 - y;
uint8_t *data = (uint8_t *)bitmap;
esp_jpg_decoder_t * jpeg = (esp_jpg_decoder_t *)decoder->device;
if (jpeg->writer) {
return jpeg->writer(jpeg->arg, x, y, w, h, data);
}
return 0;
}
static uint32_t _jpg_read(JDEC *decoder, uint8_t *buf, uint32_t len)
{
esp_jpg_decoder_t * jpeg = (esp_jpg_decoder_t *)decoder->device;
if (jpeg->len && len > (jpeg->len - jpeg->index)) {
len = jpeg->len - jpeg->index;
}
if (len) {
len = jpeg->reader(jpeg->arg, jpeg->index, buf, len);
if (!len) {
ESP_LOGE(TAG, "Read Fail at %u/%u", jpeg->index, jpeg->len);
}
jpeg->index += len;
}
return len;
}
esp_err_t esp_jpg_decode(size_t len, jpg_scale_t scale, jpg_reader_cb reader, jpg_writer_cb writer, void * arg)
{
static uint8_t work[3100];
JDEC decoder;
esp_jpg_decoder_t jpeg;
jpeg.len = len;
jpeg.reader = reader;
jpeg.writer = writer;
jpeg.arg = arg;
jpeg.scale = scale;
jpeg.index = 0;
JRESULT jres = jd_prepare(&decoder, _jpg_read, work, 3100, &jpeg);
if(jres != JDR_OK){
ESP_LOGE(TAG, "JPG Header Parse Failed! %s", jd_errors[jres]);
return ESP_FAIL;
}
uint16_t output_width = decoder.width / (1 << (uint8_t)(jpeg.scale));
uint16_t output_height = decoder.height / (1 << (uint8_t)(jpeg.scale));
//output start
writer(arg, 0, 0, output_width, output_height, NULL);
//output write
jres = jd_decomp(&decoder, _jpg_write, (uint8_t)jpeg.scale);
//output end
writer(arg, output_width, output_height, output_width, output_height, NULL);
if (jres != JDR_OK) {
ESP_LOGE(TAG, "JPG Decompression Failed! %s", jd_errors[jres]);
return ESP_FAIL;
}
//check if all data has been consumed.
if (len && jpeg.index < len) {
_jpg_read(&decoder, NULL, len - jpeg.index);
}
return ESP_OK;
}

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _ESP_JPG_DECODE_H_
#define _ESP_JPG_DECODE_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
typedef enum {
JPG_SCALE_NONE,
JPG_SCALE_2X,
JPG_SCALE_4X,
JPG_SCALE_8X,
JPG_SCALE_MAX = JPG_SCALE_8X
} jpg_scale_t;
typedef size_t (* jpg_reader_cb)(void * arg, size_t index, uint8_t *buf, size_t len);
typedef bool (* jpg_writer_cb)(void * arg, uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint8_t *data);
esp_err_t esp_jpg_decode(size_t len, jpg_scale_t scale, jpg_reader_cb reader, jpg_writer_cb writer, void * arg);
#ifdef __cplusplus
}
#endif
#endif /* _ESP_JPG_DECODE_H_ */

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _IMG_CONVERTERS_H_
#define _IMG_CONVERTERS_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include "esp_camera.h"
typedef size_t (* jpg_out_cb)(void * arg, size_t index, const void* data, size_t len);
/**
* @brief Convert image buffer to JPEG
*
* @param src Source buffer in RGB565, RGB888, YUYV or GRAYSCALE format
* @param src_len Length in bytes of the source buffer
* @param width Width in pixels of the source image
* @param height Height in pixels of the source image
* @param format Format of the source image
* @param quality JPEG quality of the resulting image
* @param cp Callback to be called to write the bytes of the output JPEG
* @param arg Pointer to be passed to the callback
*
* @return true on success
*/
bool fmt2jpg_cb(uint8_t *src, size_t src_len, uint16_t width, uint16_t height, pixformat_t format, uint8_t quality, jpg_out_cb cb, void * arg);
/**
* @brief Convert camera frame buffer to JPEG
*
* @param fb Source camera frame buffer
* @param quality JPEG quality of the resulting image
* @param cp Callback to be called to write the bytes of the output JPEG
* @param arg Pointer to be passed to the callback
*
* @return true on success
*/
bool frame2jpg_cb(camera_fb_t * fb, uint8_t quality, jpg_out_cb cb, void * arg);
/**
* @brief Convert image buffer to JPEG buffer
*
* @param src Source buffer in RGB565, RGB888, YUYV or GRAYSCALE format
* @param src_len Length in bytes of the source buffer
* @param width Width in pixels of the source image
* @param height Height in pixels of the source image
* @param format Format of the source image
* @param quality JPEG quality of the resulting image
* @param out Pointer to be populated with the address of the resulting buffer
* @param out_len Pointer to be populated with the length of the output buffer
*
* @return true on success
*/
bool fmt2jpg(uint8_t *src, size_t src_len, uint16_t width, uint16_t height, pixformat_t format, uint8_t quality, uint8_t ** out, size_t * out_len);
/**
* @brief Convert camera frame buffer to JPEG buffer
*
* @param fb Source camera frame buffer
* @param quality JPEG quality of the resulting image
* @param out Pointer to be populated with the address of the resulting buffer
* @param out_len Pointer to be populated with the length of the output buffer
*
* @return true on success
*/
bool frame2jpg(camera_fb_t * fb, uint8_t quality, uint8_t ** out, size_t * out_len);
/**
* @brief Convert image buffer to BMP buffer
*
* @param src Source buffer in JPEG, RGB565, RGB888, YUYV or GRAYSCALE format
* @param src_len Length in bytes of the source buffer
* @param width Width in pixels of the source image
* @param height Height in pixels of the source image
* @param format Format of the source image
* @param out Pointer to be populated with the address of the resulting buffer
* @param out_len Pointer to be populated with the length of the output buffer
*
* @return true on success
*/
bool fmt2bmp(uint8_t *src, size_t src_len, uint16_t width, uint16_t height, pixformat_t format, uint8_t ** out, size_t * out_len);
/**
* @brief Convert camera frame buffer to BMP buffer
*
* @param fb Source camera frame buffer
* @param out Pointer to be populated with the address of the resulting buffer
* @param out_len Pointer to be populated with the length of the output buffer
*
* @return true on success
*/
bool frame2bmp(camera_fb_t * fb, uint8_t ** out, size_t * out_len);
/**
* @brief Convert image buffer to RGB888 buffer (used for face detection)
*
* @param src Source buffer in JPEG, RGB565, RGB888, YUYV or GRAYSCALE format
* @param src_len Length in bytes of the source buffer
* @param format Format of the source image
* @param rgb_buf Pointer to the output buffer (width * height * 3)
*
* @return true on success
*/
bool fmt2rgb888(const uint8_t *src_buf, size_t src_len, pixformat_t format, uint8_t * rgb_buf);
#ifdef __cplusplus
}
#endif
#endif /* _IMG_CONVERTERS_H_ */

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// jpge.cpp - C++ class for JPEG compression.
// Public domain, Rich Geldreich <richgel99@gmail.com>
// v1.01, Dec. 18, 2010 - Initial release
// v1.02, Apr. 6, 2011 - Removed 2x2 ordered dither in H2V1 chroma subsampling method load_block_16_8_8(). (The rounding factor was 2, when it should have been 1. Either way, it wasn't helping.)
// v1.03, Apr. 16, 2011 - Added support for optimized Huffman code tables, optimized dynamic memory allocation down to only 1 alloc.
// Also from Alex Evans: Added RGBA support, linear memory allocator (no longer needed in v1.03).
// v1.04, May. 19, 2012: Forgot to set m_pFile ptr to NULL in cfile_stream::close(). Thanks to Owen Kaluza for reporting this bug.
// Code tweaks to fix VS2008 static code analysis warnings (all looked harmless).
// Code review revealed method load_block_16_8_8() (used for the non-default H2V1 sampling mode to downsample chroma) somehow didn't get the rounding factor fix from v1.02.
#include "jpge.h"
#include <stdint.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include "esp_heap_caps.h"
#define JPGE_MAX(a,b) (((a)>(b))?(a):(b))
#define JPGE_MIN(a,b) (((a)<(b))?(a):(b))
namespace jpge {
static inline void *jpge_malloc(size_t nSize) {
void * b = malloc(nSize);
if(b){
return b;
}
return heap_caps_malloc(nSize, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
}
static inline void jpge_free(void *p) { free(p); }
// Various JPEG enums and tables.
enum { M_SOF0 = 0xC0, M_DHT = 0xC4, M_SOI = 0xD8, M_EOI = 0xD9, M_SOS = 0xDA, M_DQT = 0xDB, M_APP0 = 0xE0 };
enum { DC_LUM_CODES = 12, AC_LUM_CODES = 256, DC_CHROMA_CODES = 12, AC_CHROMA_CODES = 256, MAX_HUFF_SYMBOLS = 257, MAX_HUFF_CODESIZE = 32 };
static const uint8 s_zag[64] = { 0,1,8,16,9,2,3,10,17,24,32,25,18,11,4,5,12,19,26,33,40,48,41,34,27,20,13,6,7,14,21,28,35,42,49,56,57,50,43,36,29,22,15,23,30,37,44,51,58,59,52,45,38,31,39,46,53,60,61,54,47,55,62,63 };
static const int16 s_std_lum_quant[64] = { 16,11,12,14,12,10,16,14,13,14,18,17,16,19,24,40,26,24,22,22,24,49,35,37,29,40,58,51,61,60,57,51,56,55,64,72,92,78,64,68,87,69,55,56,80,109,81,87,95,98,103,104,103,62,77,113,121,112,100,120,92,101,103,99 };
static const int16 s_std_croma_quant[64] = { 17,18,18,24,21,24,47,26,26,47,99,66,56,66,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99 };
static const uint8 s_dc_lum_bits[17] = { 0,0,1,5,1,1,1,1,1,1,0,0,0,0,0,0,0 };
static const uint8 s_dc_lum_val[DC_LUM_CODES] = { 0,1,2,3,4,5,6,7,8,9,10,11 };
static const uint8 s_ac_lum_bits[17] = { 0,0,2,1,3,3,2,4,3,5,5,4,4,0,0,1,0x7d };
static const uint8 s_ac_lum_val[AC_LUM_CODES] = {
0x01,0x02,0x03,0x00,0x04,0x11,0x05,0x12,0x21,0x31,0x41,0x06,0x13,0x51,0x61,0x07,0x22,0x71,0x14,0x32,0x81,0x91,0xa1,0x08,0x23,0x42,0xb1,0xc1,0x15,0x52,0xd1,0xf0,
0x24,0x33,0x62,0x72,0x82,0x09,0x0a,0x16,0x17,0x18,0x19,0x1a,0x25,0x26,0x27,0x28,0x29,0x2a,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49,
0x4a,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x83,0x84,0x85,0x86,0x87,0x88,0x89,
0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5,
0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,
0xf9,0xfa
};
static const uint8 s_dc_chroma_bits[17] = { 0,0,3,1,1,1,1,1,1,1,1,1,0,0,0,0,0 };
static const uint8 s_dc_chroma_val[DC_CHROMA_CODES] = { 0,1,2,3,4,5,6,7,8,9,10,11 };
static const uint8 s_ac_chroma_bits[17] = { 0,0,2,1,2,4,4,3,4,7,5,4,4,0,1,2,0x77 };
static const uint8 s_ac_chroma_val[AC_CHROMA_CODES] = {
0x00,0x01,0x02,0x03,0x11,0x04,0x05,0x21,0x31,0x06,0x12,0x41,0x51,0x07,0x61,0x71,0x13,0x22,0x32,0x81,0x08,0x14,0x42,0x91,0xa1,0xb1,0xc1,0x09,0x23,0x33,0x52,0xf0,
0x15,0x62,0x72,0xd1,0x0a,0x16,0x24,0x34,0xe1,0x25,0xf1,0x17,0x18,0x19,0x1a,0x26,0x27,0x28,0x29,0x2a,0x35,0x36,0x37,0x38,0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,
0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x82,0x83,0x84,0x85,0x86,0x87,
0x88,0x89,0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xc2,0xc3,
0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,
0xf9,0xfa
};
const int YR = 19595, YG = 38470, YB = 7471, CB_R = -11059, CB_G = -21709, CB_B = 32768, CR_R = 32768, CR_G = -27439, CR_B = -5329;
static int32 m_last_quality = 0;
static int32 m_quantization_tables[2][64];
static bool m_huff_initialized = false;
static uint m_huff_codes[4][256];
static uint8 m_huff_code_sizes[4][256];
static uint8 m_huff_bits[4][17];
static uint8 m_huff_val[4][256];
static inline uint8 clamp(int i) {
if (i < 0) {
i = 0;
} else if (i > 255){
i = 255;
}
return static_cast<uint8>(i);
}
static void RGB_to_YCC(uint8* pDst, const uint8 *pSrc, int num_pixels) {
for ( ; num_pixels; pDst += 3, pSrc += 3, num_pixels--) {
const int r = pSrc[0], g = pSrc[1], b = pSrc[2];
pDst[0] = static_cast<uint8>((r * YR + g * YG + b * YB + 32768) >> 16);
pDst[1] = clamp(128 + ((r * CB_R + g * CB_G + b * CB_B + 32768) >> 16));
pDst[2] = clamp(128 + ((r * CR_R + g * CR_G + b * CR_B + 32768) >> 16));
}
}
static void RGB_to_Y(uint8* pDst, const uint8 *pSrc, int num_pixels) {
for ( ; num_pixels; pDst++, pSrc += 3, num_pixels--) {
pDst[0] = static_cast<uint8>((pSrc[0] * YR + pSrc[1] * YG + pSrc[2] * YB + 32768) >> 16);
}
}
static void Y_to_YCC(uint8* pDst, const uint8* pSrc, int num_pixels) {
for( ; num_pixels; pDst += 3, pSrc++, num_pixels--) {
pDst[0] = pSrc[0];
pDst[1] = 128;
pDst[2] = 128;
}
}
// Forward DCT - DCT derived from jfdctint.
enum { CONST_BITS = 13, ROW_BITS = 2 };
#define DCT_DESCALE(x, n) (((x) + (((int32)1) << ((n) - 1))) >> (n))
#define DCT_MUL(var, c) (static_cast<int16>(var) * static_cast<int32>(c))
#define DCT1D(s0, s1, s2, s3, s4, s5, s6, s7) \
int32 t0 = s0 + s7, t7 = s0 - s7, t1 = s1 + s6, t6 = s1 - s6, t2 = s2 + s5, t5 = s2 - s5, t3 = s3 + s4, t4 = s3 - s4; \
int32 t10 = t0 + t3, t13 = t0 - t3, t11 = t1 + t2, t12 = t1 - t2; \
int32 u1 = DCT_MUL(t12 + t13, 4433); \
s2 = u1 + DCT_MUL(t13, 6270); \
s6 = u1 + DCT_MUL(t12, -15137); \
u1 = t4 + t7; \
int32 u2 = t5 + t6, u3 = t4 + t6, u4 = t5 + t7; \
int32 z5 = DCT_MUL(u3 + u4, 9633); \
t4 = DCT_MUL(t4, 2446); t5 = DCT_MUL(t5, 16819); \
t6 = DCT_MUL(t6, 25172); t7 = DCT_MUL(t7, 12299); \
u1 = DCT_MUL(u1, -7373); u2 = DCT_MUL(u2, -20995); \
u3 = DCT_MUL(u3, -16069); u4 = DCT_MUL(u4, -3196); \
u3 += z5; u4 += z5; \
s0 = t10 + t11; s1 = t7 + u1 + u4; s3 = t6 + u2 + u3; s4 = t10 - t11; s5 = t5 + u2 + u4; s7 = t4 + u1 + u3;
static void DCT2D(int32 *p) {
int32 c, *q = p;
for (c = 7; c >= 0; c--, q += 8) {
int32 s0 = q[0], s1 = q[1], s2 = q[2], s3 = q[3], s4 = q[4], s5 = q[5], s6 = q[6], s7 = q[7];
DCT1D(s0, s1, s2, s3, s4, s5, s6, s7);
q[0] = s0 << ROW_BITS; q[1] = DCT_DESCALE(s1, CONST_BITS-ROW_BITS); q[2] = DCT_DESCALE(s2, CONST_BITS-ROW_BITS); q[3] = DCT_DESCALE(s3, CONST_BITS-ROW_BITS);
q[4] = s4 << ROW_BITS; q[5] = DCT_DESCALE(s5, CONST_BITS-ROW_BITS); q[6] = DCT_DESCALE(s6, CONST_BITS-ROW_BITS); q[7] = DCT_DESCALE(s7, CONST_BITS-ROW_BITS);
}
for (q = p, c = 7; c >= 0; c--, q++) {
int32 s0 = q[0*8], s1 = q[1*8], s2 = q[2*8], s3 = q[3*8], s4 = q[4*8], s5 = q[5*8], s6 = q[6*8], s7 = q[7*8];
DCT1D(s0, s1, s2, s3, s4, s5, s6, s7);
q[0*8] = DCT_DESCALE(s0, ROW_BITS+3); q[1*8] = DCT_DESCALE(s1, CONST_BITS+ROW_BITS+3); q[2*8] = DCT_DESCALE(s2, CONST_BITS+ROW_BITS+3); q[3*8] = DCT_DESCALE(s3, CONST_BITS+ROW_BITS+3);
q[4*8] = DCT_DESCALE(s4, ROW_BITS+3); q[5*8] = DCT_DESCALE(s5, CONST_BITS+ROW_BITS+3); q[6*8] = DCT_DESCALE(s6, CONST_BITS+ROW_BITS+3); q[7*8] = DCT_DESCALE(s7, CONST_BITS+ROW_BITS+3);
}
}
// Compute the actual canonical Huffman codes/code sizes given the JPEG huff bits and val arrays.
static void compute_huffman_table(uint *codes, uint8 *code_sizes, uint8 *bits, uint8 *val)
{
int i, l, last_p, si;
static uint8 huff_size[257];
static uint huff_code[257];
uint code;
int p = 0;
for (l = 1; l <= 16; l++) {
for (i = 1; i <= bits[l]; i++) {
huff_size[p++] = (char)l;
}
}
huff_size[p] = 0;
last_p = p; // write sentinel
code = 0; si = huff_size[0]; p = 0;
while (huff_size[p]) {
while (huff_size[p] == si) {
huff_code[p++] = code++;
}
code <<= 1;
si++;
}
memset(codes, 0, sizeof(codes[0])*256);
memset(code_sizes, 0, sizeof(code_sizes[0])*256);
for (p = 0; p < last_p; p++) {
codes[val[p]] = huff_code[p];
code_sizes[val[p]] = huff_size[p];
}
}
void jpeg_encoder::flush_output_buffer()
{
if (m_out_buf_left != JPGE_OUT_BUF_SIZE) {
m_all_stream_writes_succeeded = m_all_stream_writes_succeeded && m_pStream->put_buf(m_out_buf, JPGE_OUT_BUF_SIZE - m_out_buf_left);
}
m_pOut_buf = m_out_buf;
m_out_buf_left = JPGE_OUT_BUF_SIZE;
}
void jpeg_encoder::emit_byte(uint8 i)
{
*m_pOut_buf++ = i;
if (--m_out_buf_left == 0) {
flush_output_buffer();
}
}
void jpeg_encoder::put_bits(uint bits, uint len)
{
uint8 c = 0;
m_bit_buffer |= ((uint32)bits << (24 - (m_bits_in += len)));
while (m_bits_in >= 8) {
c = (uint8)((m_bit_buffer >> 16) & 0xFF);
emit_byte(c);
if (c == 0xFF) {
emit_byte(0);
}
m_bit_buffer <<= 8;
m_bits_in -= 8;
}
}
void jpeg_encoder::emit_word(uint i)
{
emit_byte(uint8(i >> 8)); emit_byte(uint8(i & 0xFF));
}
// JPEG marker generation.
void jpeg_encoder::emit_marker(int marker)
{
emit_byte(uint8(0xFF)); emit_byte(uint8(marker));
}
// Emit JFIF marker
void jpeg_encoder::emit_jfif_app0()
{
emit_marker(M_APP0);
emit_word(2 + 4 + 1 + 2 + 1 + 2 + 2 + 1 + 1);
emit_byte(0x4A); emit_byte(0x46); emit_byte(0x49); emit_byte(0x46); /* Identifier: ASCII "JFIF" */
emit_byte(0);
emit_byte(1); /* Major version */
emit_byte(1); /* Minor version */
emit_byte(0); /* Density unit */
emit_word(1);
emit_word(1);
emit_byte(0); /* No thumbnail image */
emit_byte(0);
}
// Emit quantization tables
void jpeg_encoder::emit_dqt()
{
for (int i = 0; i < ((m_num_components == 3) ? 2 : 1); i++)
{
emit_marker(M_DQT);
emit_word(64 + 1 + 2);
emit_byte(static_cast<uint8>(i));
for (int j = 0; j < 64; j++)
emit_byte(static_cast<uint8>(m_quantization_tables[i][j]));
}
}
// Emit start of frame marker
void jpeg_encoder::emit_sof()
{
emit_marker(M_SOF0); /* baseline */
emit_word(3 * m_num_components + 2 + 5 + 1);
emit_byte(8); /* precision */
emit_word(m_image_y);
emit_word(m_image_x);
emit_byte(m_num_components);
for (int i = 0; i < m_num_components; i++)
{
emit_byte(static_cast<uint8>(i + 1)); /* component ID */
emit_byte((m_comp_h_samp[i] << 4) + m_comp_v_samp[i]); /* h and v sampling */
emit_byte(i > 0); /* quant. table num */
}
}
// Emit Huffman table.
void jpeg_encoder::emit_dht(uint8 *bits, uint8 *val, int index, bool ac_flag)
{
emit_marker(M_DHT);
int length = 0;
for (int i = 1; i <= 16; i++)
length += bits[i];
emit_word(length + 2 + 1 + 16);
emit_byte(static_cast<uint8>(index + (ac_flag << 4)));
for (int i = 1; i <= 16; i++)
emit_byte(bits[i]);
for (int i = 0; i < length; i++)
emit_byte(val[i]);
}
// Emit all Huffman tables.
void jpeg_encoder::emit_dhts()
{
emit_dht(m_huff_bits[0+0], m_huff_val[0+0], 0, false);
emit_dht(m_huff_bits[2+0], m_huff_val[2+0], 0, true);
if (m_num_components == 3) {
emit_dht(m_huff_bits[0+1], m_huff_val[0+1], 1, false);
emit_dht(m_huff_bits[2+1], m_huff_val[2+1], 1, true);
}
}
// emit start of scan
void jpeg_encoder::emit_sos()
{
emit_marker(M_SOS);
emit_word(2 * m_num_components + 2 + 1 + 3);
emit_byte(m_num_components);
for (int i = 0; i < m_num_components; i++)
{
emit_byte(static_cast<uint8>(i + 1));
if (i == 0)
emit_byte((0 << 4) + 0);
else
emit_byte((1 << 4) + 1);
}
emit_byte(0); /* spectral selection */
emit_byte(63);
emit_byte(0);
}
void jpeg_encoder::load_block_8_8_grey(int x)
{
uint8 *pSrc;
sample_array_t *pDst = m_sample_array;
x <<= 3;
for (int i = 0; i < 8; i++, pDst += 8)
{
pSrc = m_mcu_lines[i] + x;
pDst[0] = pSrc[0] - 128; pDst[1] = pSrc[1] - 128; pDst[2] = pSrc[2] - 128; pDst[3] = pSrc[3] - 128;
pDst[4] = pSrc[4] - 128; pDst[5] = pSrc[5] - 128; pDst[6] = pSrc[6] - 128; pDst[7] = pSrc[7] - 128;
}
}
void jpeg_encoder::load_block_8_8(int x, int y, int c)
{
uint8 *pSrc;
sample_array_t *pDst = m_sample_array;
x = (x * (8 * 3)) + c;
y <<= 3;
for (int i = 0; i < 8; i++, pDst += 8)
{
pSrc = m_mcu_lines[y + i] + x;
pDst[0] = pSrc[0 * 3] - 128; pDst[1] = pSrc[1 * 3] - 128; pDst[2] = pSrc[2 * 3] - 128; pDst[3] = pSrc[3 * 3] - 128;
pDst[4] = pSrc[4 * 3] - 128; pDst[5] = pSrc[5 * 3] - 128; pDst[6] = pSrc[6 * 3] - 128; pDst[7] = pSrc[7 * 3] - 128;
}
}
void jpeg_encoder::load_block_16_8(int x, int c)
{
uint8 *pSrc1, *pSrc2;
sample_array_t *pDst = m_sample_array;
x = (x * (16 * 3)) + c;
int a = 0, b = 2;
for (int i = 0; i < 16; i += 2, pDst += 8)
{
pSrc1 = m_mcu_lines[i + 0] + x;
pSrc2 = m_mcu_lines[i + 1] + x;
pDst[0] = ((pSrc1[ 0 * 3] + pSrc1[ 1 * 3] + pSrc2[ 0 * 3] + pSrc2[ 1 * 3] + a) >> 2) - 128; pDst[1] = ((pSrc1[ 2 * 3] + pSrc1[ 3 * 3] + pSrc2[ 2 * 3] + pSrc2[ 3 * 3] + b) >> 2) - 128;
pDst[2] = ((pSrc1[ 4 * 3] + pSrc1[ 5 * 3] + pSrc2[ 4 * 3] + pSrc2[ 5 * 3] + a) >> 2) - 128; pDst[3] = ((pSrc1[ 6 * 3] + pSrc1[ 7 * 3] + pSrc2[ 6 * 3] + pSrc2[ 7 * 3] + b) >> 2) - 128;
pDst[4] = ((pSrc1[ 8 * 3] + pSrc1[ 9 * 3] + pSrc2[ 8 * 3] + pSrc2[ 9 * 3] + a) >> 2) - 128; pDst[5] = ((pSrc1[10 * 3] + pSrc1[11 * 3] + pSrc2[10 * 3] + pSrc2[11 * 3] + b) >> 2) - 128;
pDst[6] = ((pSrc1[12 * 3] + pSrc1[13 * 3] + pSrc2[12 * 3] + pSrc2[13 * 3] + a) >> 2) - 128; pDst[7] = ((pSrc1[14 * 3] + pSrc1[15 * 3] + pSrc2[14 * 3] + pSrc2[15 * 3] + b) >> 2) - 128;
int temp = a; a = b; b = temp;
}
}
void jpeg_encoder::load_block_16_8_8(int x, int c)
{
uint8 *pSrc1;
sample_array_t *pDst = m_sample_array;
x = (x * (16 * 3)) + c;
for (int i = 0; i < 8; i++, pDst += 8)
{
pSrc1 = m_mcu_lines[i + 0] + x;
pDst[0] = ((pSrc1[ 0 * 3] + pSrc1[ 1 * 3]) >> 1) - 128; pDst[1] = ((pSrc1[ 2 * 3] + pSrc1[ 3 * 3]) >> 1) - 128;
pDst[2] = ((pSrc1[ 4 * 3] + pSrc1[ 5 * 3]) >> 1) - 128; pDst[3] = ((pSrc1[ 6 * 3] + pSrc1[ 7 * 3]) >> 1) - 128;
pDst[4] = ((pSrc1[ 8 * 3] + pSrc1[ 9 * 3]) >> 1) - 128; pDst[5] = ((pSrc1[10 * 3] + pSrc1[11 * 3]) >> 1) - 128;
pDst[6] = ((pSrc1[12 * 3] + pSrc1[13 * 3]) >> 1) - 128; pDst[7] = ((pSrc1[14 * 3] + pSrc1[15 * 3]) >> 1) - 128;
}
}
void jpeg_encoder::load_quantized_coefficients(int component_num)
{
int32 *q = m_quantization_tables[component_num > 0];
int16 *pDst = m_coefficient_array;
for (int i = 0; i < 64; i++)
{
sample_array_t j = m_sample_array[s_zag[i]];
if (j < 0)
{
if ((j = -j + (*q >> 1)) < *q)
*pDst++ = 0;
else
*pDst++ = static_cast<int16>(-(j / *q));
}
else
{
if ((j = j + (*q >> 1)) < *q)
*pDst++ = 0;
else
*pDst++ = static_cast<int16>((j / *q));
}
q++;
}
}
void jpeg_encoder::code_coefficients_pass_two(int component_num)
{
int i, j, run_len, nbits, temp1, temp2;
int16 *pSrc = m_coefficient_array;
uint *codes[2];
uint8 *code_sizes[2];
if (component_num == 0)
{
codes[0] = m_huff_codes[0 + 0]; codes[1] = m_huff_codes[2 + 0];
code_sizes[0] = m_huff_code_sizes[0 + 0]; code_sizes[1] = m_huff_code_sizes[2 + 0];
}
else
{
codes[0] = m_huff_codes[0 + 1]; codes[1] = m_huff_codes[2 + 1];
code_sizes[0] = m_huff_code_sizes[0 + 1]; code_sizes[1] = m_huff_code_sizes[2 + 1];
}
temp1 = temp2 = pSrc[0] - m_last_dc_val[component_num];
m_last_dc_val[component_num] = pSrc[0];
if (temp1 < 0)
{
temp1 = -temp1; temp2--;
}
nbits = 0;
while (temp1)
{
nbits++; temp1 >>= 1;
}
put_bits(codes[0][nbits], code_sizes[0][nbits]);
if (nbits) put_bits(temp2 & ((1 << nbits) - 1), nbits);
for (run_len = 0, i = 1; i < 64; i++)
{
if ((temp1 = m_coefficient_array[i]) == 0)
run_len++;
else
{
while (run_len >= 16)
{
put_bits(codes[1][0xF0], code_sizes[1][0xF0]);
run_len -= 16;
}
if ((temp2 = temp1) < 0)
{
temp1 = -temp1;
temp2--;
}
nbits = 1;
while (temp1 >>= 1)
nbits++;
j = (run_len << 4) + nbits;
put_bits(codes[1][j], code_sizes[1][j]);
put_bits(temp2 & ((1 << nbits) - 1), nbits);
run_len = 0;
}
}
if (run_len)
put_bits(codes[1][0], code_sizes[1][0]);
}
void jpeg_encoder::code_block(int component_num)
{
DCT2D(m_sample_array);
load_quantized_coefficients(component_num);
code_coefficients_pass_two(component_num);
}
void jpeg_encoder::process_mcu_row()
{
if (m_num_components == 1)
{
for (int i = 0; i < m_mcus_per_row; i++)
{
load_block_8_8_grey(i); code_block(0);
}
}
else if ((m_comp_h_samp[0] == 1) && (m_comp_v_samp[0] == 1))
{
for (int i = 0; i < m_mcus_per_row; i++)
{
load_block_8_8(i, 0, 0); code_block(0); load_block_8_8(i, 0, 1); code_block(1); load_block_8_8(i, 0, 2); code_block(2);
}
}
else if ((m_comp_h_samp[0] == 2) && (m_comp_v_samp[0] == 1))
{
for (int i = 0; i < m_mcus_per_row; i++)
{
load_block_8_8(i * 2 + 0, 0, 0); code_block(0); load_block_8_8(i * 2 + 1, 0, 0); code_block(0);
load_block_16_8_8(i, 1); code_block(1); load_block_16_8_8(i, 2); code_block(2);
}
}
else if ((m_comp_h_samp[0] == 2) && (m_comp_v_samp[0] == 2))
{
for (int i = 0; i < m_mcus_per_row; i++)
{
load_block_8_8(i * 2 + 0, 0, 0); code_block(0); load_block_8_8(i * 2 + 1, 0, 0); code_block(0);
load_block_8_8(i * 2 + 0, 1, 0); code_block(0); load_block_8_8(i * 2 + 1, 1, 0); code_block(0);
load_block_16_8(i, 1); code_block(1); load_block_16_8(i, 2); code_block(2);
}
}
}
void jpeg_encoder::load_mcu(const void *pSrc)
{
const uint8* Psrc = reinterpret_cast<const uint8*>(pSrc);
uint8* pDst = m_mcu_lines[m_mcu_y_ofs]; // OK to write up to m_image_bpl_xlt bytes to pDst
if (m_num_components == 1) {
if (m_image_bpp == 3)
RGB_to_Y(pDst, Psrc, m_image_x);
else
memcpy(pDst, Psrc, m_image_x);
} else {
if (m_image_bpp == 3)
RGB_to_YCC(pDst, Psrc, m_image_x);
else
Y_to_YCC(pDst, Psrc, m_image_x);
}
// Possibly duplicate pixels at end of scanline if not a multiple of 8 or 16
if (m_num_components == 1)
memset(m_mcu_lines[m_mcu_y_ofs] + m_image_bpl_xlt, pDst[m_image_bpl_xlt - 1], m_image_x_mcu - m_image_x);
else
{
const uint8 y = pDst[m_image_bpl_xlt - 3 + 0], cb = pDst[m_image_bpl_xlt - 3 + 1], cr = pDst[m_image_bpl_xlt - 3 + 2];
uint8 *q = m_mcu_lines[m_mcu_y_ofs] + m_image_bpl_xlt;
for (int i = m_image_x; i < m_image_x_mcu; i++)
{
*q++ = y; *q++ = cb; *q++ = cr;
}
}
if (++m_mcu_y_ofs == m_mcu_y)
{
process_mcu_row();
m_mcu_y_ofs = 0;
}
}
// Quantization table generation.
void jpeg_encoder::compute_quant_table(int32 *pDst, const int16 *pSrc)
{
int32 q;
if (m_params.m_quality < 50)
q = 5000 / m_params.m_quality;
else
q = 200 - m_params.m_quality * 2;
for (int i = 0; i < 64; i++)
{
int32 j = *pSrc++; j = (j * q + 50L) / 100L;
*pDst++ = JPGE_MIN(JPGE_MAX(j, 1), 255);
}
}
// Higher-level methods.
bool jpeg_encoder::jpg_open(int p_x_res, int p_y_res, int src_channels)
{
m_num_components = 3;
switch (m_params.m_subsampling)
{
case Y_ONLY:
{
m_num_components = 1;
m_comp_h_samp[0] = 1; m_comp_v_samp[0] = 1;
m_mcu_x = 8; m_mcu_y = 8;
break;
}
case H1V1:
{
m_comp_h_samp[0] = 1; m_comp_v_samp[0] = 1;
m_comp_h_samp[1] = 1; m_comp_v_samp[1] = 1;
m_comp_h_samp[2] = 1; m_comp_v_samp[2] = 1;
m_mcu_x = 8; m_mcu_y = 8;
break;
}
case H2V1:
{
m_comp_h_samp[0] = 2; m_comp_v_samp[0] = 1;
m_comp_h_samp[1] = 1; m_comp_v_samp[1] = 1;
m_comp_h_samp[2] = 1; m_comp_v_samp[2] = 1;
m_mcu_x = 16; m_mcu_y = 8;
break;
}
case H2V2:
{
m_comp_h_samp[0] = 2; m_comp_v_samp[0] = 2;
m_comp_h_samp[1] = 1; m_comp_v_samp[1] = 1;
m_comp_h_samp[2] = 1; m_comp_v_samp[2] = 1;
m_mcu_x = 16; m_mcu_y = 16;
}
}
m_image_x = p_x_res; m_image_y = p_y_res;
m_image_bpp = src_channels;
m_image_bpl = m_image_x * src_channels;
m_image_x_mcu = (m_image_x + m_mcu_x - 1) & (~(m_mcu_x - 1));
m_image_y_mcu = (m_image_y + m_mcu_y - 1) & (~(m_mcu_y - 1));
m_image_bpl_xlt = m_image_x * m_num_components;
m_image_bpl_mcu = m_image_x_mcu * m_num_components;
m_mcus_per_row = m_image_x_mcu / m_mcu_x;
if ((m_mcu_lines[0] = static_cast<uint8*>(jpge_malloc(m_image_bpl_mcu * m_mcu_y))) == NULL) {
return false;
}
for (int i = 1; i < m_mcu_y; i++)
m_mcu_lines[i] = m_mcu_lines[i-1] + m_image_bpl_mcu;
if(m_last_quality != m_params.m_quality){
m_last_quality = m_params.m_quality;
compute_quant_table(m_quantization_tables[0], s_std_lum_quant);
compute_quant_table(m_quantization_tables[1], s_std_croma_quant);
}
if(!m_huff_initialized){
m_huff_initialized = true;
memcpy(m_huff_bits[0+0], s_dc_lum_bits, 17); memcpy(m_huff_val[0+0], s_dc_lum_val, DC_LUM_CODES);
memcpy(m_huff_bits[2+0], s_ac_lum_bits, 17); memcpy(m_huff_val[2+0], s_ac_lum_val, AC_LUM_CODES);
memcpy(m_huff_bits[0+1], s_dc_chroma_bits, 17); memcpy(m_huff_val[0+1], s_dc_chroma_val, DC_CHROMA_CODES);
memcpy(m_huff_bits[2+1], s_ac_chroma_bits, 17); memcpy(m_huff_val[2+1], s_ac_chroma_val, AC_CHROMA_CODES);
compute_huffman_table(&m_huff_codes[0+0][0], &m_huff_code_sizes[0+0][0], m_huff_bits[0+0], m_huff_val[0+0]);
compute_huffman_table(&m_huff_codes[2+0][0], &m_huff_code_sizes[2+0][0], m_huff_bits[2+0], m_huff_val[2+0]);
compute_huffman_table(&m_huff_codes[0+1][0], &m_huff_code_sizes[0+1][0], m_huff_bits[0+1], m_huff_val[0+1]);
compute_huffman_table(&m_huff_codes[2+1][0], &m_huff_code_sizes[2+1][0], m_huff_bits[2+1], m_huff_val[2+1]);
}
m_out_buf_left = JPGE_OUT_BUF_SIZE;
m_pOut_buf = m_out_buf;
m_bit_buffer = 0;
m_bits_in = 0;
m_mcu_y_ofs = 0;
m_pass_num = 2;
memset(m_last_dc_val, 0, 3 * sizeof(m_last_dc_val[0]));
// Emit all markers at beginning of image file.
emit_marker(M_SOI);
emit_jfif_app0();
emit_dqt();
emit_sof();
emit_dhts();
emit_sos();
return m_all_stream_writes_succeeded;
}
bool jpeg_encoder::process_end_of_image()
{
if (m_mcu_y_ofs) {
if (m_mcu_y_ofs < 16) { // check here just to shut up static analysis
for (int i = m_mcu_y_ofs; i < m_mcu_y; i++) {
memcpy(m_mcu_lines[i], m_mcu_lines[m_mcu_y_ofs - 1], m_image_bpl_mcu);
}
}
process_mcu_row();
}
put_bits(0x7F, 7);
emit_marker(M_EOI);
flush_output_buffer();
m_all_stream_writes_succeeded = m_all_stream_writes_succeeded && m_pStream->put_buf(NULL, 0);
m_pass_num++; // purposely bump up m_pass_num, for debugging
return true;
}
void jpeg_encoder::clear()
{
m_mcu_lines[0] = NULL;
m_pass_num = 0;
m_all_stream_writes_succeeded = true;
}
jpeg_encoder::jpeg_encoder()
{
clear();
}
jpeg_encoder::~jpeg_encoder()
{
deinit();
}
bool jpeg_encoder::init(output_stream *pStream, int width, int height, int src_channels, const params &comp_params)
{
deinit();
if (((!pStream) || (width < 1) || (height < 1)) || ((src_channels != 1) && (src_channels != 3) && (src_channels != 4)) || (!comp_params.check())) return false;
m_pStream = pStream;
m_params = comp_params;
return jpg_open(width, height, src_channels);
}
void jpeg_encoder::deinit()
{
jpge_free(m_mcu_lines[0]);
clear();
}
bool jpeg_encoder::process_scanline(const void* pScanline)
{
if ((m_pass_num < 1) || (m_pass_num > 2)) {
return false;
}
if (m_all_stream_writes_succeeded) {
if (!pScanline) {
if (!process_end_of_image()) {
return false;
}
} else {
load_mcu(pScanline);
}
}
return m_all_stream_writes_succeeded;
}
} // namespace jpge

142
esp32-cam/jpge.h
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// jpge.h - C++ class for JPEG compression.
// Public domain, Rich Geldreich <richgel99@gmail.com>
// Alex Evans: Added RGBA support, linear memory allocator.
#ifndef JPEG_ENCODER_H
#define JPEG_ENCODER_H
namespace jpge
{
typedef unsigned char uint8;
typedef signed short int16;
typedef signed int int32;
typedef unsigned short uint16;
typedef unsigned int uint32;
typedef unsigned int uint;
// JPEG chroma subsampling factors. Y_ONLY (grayscale images) and H2V2 (color images) are the most common.
enum subsampling_t { Y_ONLY = 0, H1V1 = 1, H2V1 = 2, H2V2 = 3 };
// JPEG compression parameters structure.
struct params {
inline params() : m_quality(85), m_subsampling(H2V2) { }
inline bool check() const {
if ((m_quality < 1) || (m_quality > 100)) {
return false;
}
if ((uint)m_subsampling > (uint)H2V2) {
return false;
}
return true;
}
// Quality: 1-100, higher is better. Typical values are around 50-95.
int m_quality;
// m_subsampling:
// 0 = Y (grayscale) only
// 1 = H1V1 subsampling (YCbCr 1x1x1, 3 blocks per MCU)
// 2 = H2V1 subsampling (YCbCr 2x1x1, 4 blocks per MCU)
// 3 = H2V2 subsampling (YCbCr 4x1x1, 6 blocks per MCU-- very common)
subsampling_t m_subsampling;
};
// Output stream abstract class - used by the jpeg_encoder class to write to the output stream.
// put_buf() is generally called with len==JPGE_OUT_BUF_SIZE bytes, but for headers it'll be called with smaller amounts.
class output_stream {
public:
virtual ~output_stream() { };
virtual bool put_buf(const void* Pbuf, int len) = 0;
virtual uint get_size() const = 0;
};
// Lower level jpeg_encoder class - useful if more control is needed than the above helper functions.
class jpeg_encoder {
public:
jpeg_encoder();
~jpeg_encoder();
// Initializes the compressor.
// pStream: The stream object to use for writing compressed data.
// params - Compression parameters structure, defined above.
// width, height - Image dimensions.
// channels - May be 1, or 3. 1 indicates grayscale, 3 indicates RGB source data.
// Returns false on out of memory or if a stream write fails.
bool init(output_stream *pStream, int width, int height, int src_channels, const params &comp_params = params());
// Call this method with each source scanline.
// width * src_channels bytes per scanline is expected (RGB or Y format).
// You must call with NULL after all scanlines are processed to finish compression.
// Returns false on out of memory or if a stream write fails.
bool process_scanline(const void* pScanline);
// Deinitializes the compressor, freeing any allocated memory. May be called at any time.
void deinit();
private:
jpeg_encoder(const jpeg_encoder &);
jpeg_encoder &operator =(const jpeg_encoder &);
typedef int32 sample_array_t;
enum { JPGE_OUT_BUF_SIZE = 512 };
output_stream *m_pStream;
params m_params;
uint8 m_num_components;
uint8 m_comp_h_samp[3], m_comp_v_samp[3];
int m_image_x, m_image_y, m_image_bpp, m_image_bpl;
int m_image_x_mcu, m_image_y_mcu;
int m_image_bpl_xlt, m_image_bpl_mcu;
int m_mcus_per_row;
int m_mcu_x, m_mcu_y;
uint8 *m_mcu_lines[16];
uint8 m_mcu_y_ofs;
sample_array_t m_sample_array[64];
int16 m_coefficient_array[64];
int m_last_dc_val[3];
uint8 m_out_buf[JPGE_OUT_BUF_SIZE];
uint8 *m_pOut_buf;
uint m_out_buf_left;
uint32 m_bit_buffer;
uint m_bits_in;
uint8 m_pass_num;
bool m_all_stream_writes_succeeded;
bool jpg_open(int p_x_res, int p_y_res, int src_channels);
void flush_output_buffer();
void put_bits(uint bits, uint len);
void emit_byte(uint8 i);
void emit_word(uint i);
void emit_marker(int marker);
void emit_jfif_app0();
void emit_dqt();
void emit_sof();
void emit_dht(uint8 *bits, uint8 *val, int index, bool ac_flag);
void emit_dhts();
void emit_sos();
void compute_quant_table(int32 *dst, const int16 *src);
void load_quantized_coefficients(int component_num);
void load_block_8_8_grey(int x);
void load_block_8_8(int x, int y, int c);
void load_block_16_8(int x, int c);
void load_block_16_8_8(int x, int c);
void code_coefficients_pass_two(int component_num);
void code_block(int component_num);
void process_mcu_row();
bool process_end_of_image();
void load_mcu(const void* src);
void clear();
void init();
};
} // namespace jpge
#endif // JPEG_ENCODER

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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* OV2640 driver.
*
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "sccb.h"
#include "ov2640.h"
#include "ov2640_regs.h"
#include "ov2640_settings.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#if defined(ARDUINO_ARCH_ESP32) && defined(CONFIG_ARDUHAL_ESP_LOG)
#include "esp32-hal-log.h"
#else
#include "esp_log.h"
static const char* TAG = "ov2640";
#endif
static volatile ov2640_bank_t reg_bank = BANK_MAX;
static int set_bank(sensor_t *sensor, ov2640_bank_t bank)
{
int res = 0;
if (bank != reg_bank) {
reg_bank = bank;
res = SCCB_Write(sensor->slv_addr, BANK_SEL, bank);
}
return res;
}
static int write_regs(sensor_t *sensor, const uint8_t (*regs)[2])
{
int i=0, res = 0;
while (regs[i][0]) {
if (regs[i][0] == BANK_SEL) {
res = set_bank(sensor, regs[i][1]);
} else {
res = SCCB_Write(sensor->slv_addr, regs[i][0], regs[i][1]);
}
if (res) {
return res;
}
i++;
}
return res;
}
static int write_reg(sensor_t *sensor, ov2640_bank_t bank, uint8_t reg, uint8_t value)
{
int ret = set_bank(sensor, bank);
if(!ret) {
ret = SCCB_Write(sensor->slv_addr, reg, value);
}
return ret;
}
static int set_reg_bits(sensor_t *sensor, uint8_t bank, uint8_t reg, uint8_t offset, uint8_t mask, uint8_t value)
{
int ret = 0;
uint8_t c_value, new_value;
ret = set_bank(sensor, bank);
if(ret) {
return ret;
}
c_value = SCCB_Read(sensor->slv_addr, reg);
new_value = (c_value & ~(mask << offset)) | ((value & mask) << offset);
ret = SCCB_Write(sensor->slv_addr, reg, new_value);
return ret;
}
static int read_reg(sensor_t *sensor, ov2640_bank_t bank, uint8_t reg)
{
if(set_bank(sensor, bank)){
return 0;
}
return SCCB_Read(sensor->slv_addr, reg);
}
static uint8_t get_reg_bits(sensor_t *sensor, uint8_t bank, uint8_t reg, uint8_t offset, uint8_t mask)
{
return (read_reg(sensor, bank, reg) >> offset) & mask;
}
static int write_reg_bits(sensor_t *sensor, uint8_t bank, uint8_t reg, uint8_t mask, int enable)
{
return set_reg_bits(sensor, bank, reg, 0, mask, enable?mask:0);
}
#define WRITE_REGS_OR_RETURN(regs) ret = write_regs(sensor, regs); if(ret){return ret;}
#define WRITE_REG_OR_RETURN(bank, reg, val) ret = write_reg(sensor, bank, reg, val); if(ret){return ret;}
#define SET_REG_BITS_OR_RETURN(bank, reg, offset, mask, val) ret = set_reg_bits(sensor, bank, reg, offset, mask, val); if(ret){return ret;}
static int reset(sensor_t *sensor)
{
int ret = 0;
WRITE_REG_OR_RETURN(BANK_SENSOR, COM7, COM7_SRST);
vTaskDelay(10 / portTICK_PERIOD_MS);
WRITE_REGS_OR_RETURN(ov2640_settings_cif);
return ret;
}
static int set_pixformat(sensor_t *sensor, pixformat_t pixformat)
{
int ret = 0;
sensor->pixformat = pixformat;
switch (pixformat) {
case PIXFORMAT_RGB565:
case PIXFORMAT_RGB888:
WRITE_REGS_OR_RETURN(ov2640_settings_rgb565);
break;
case PIXFORMAT_YUV422:
case PIXFORMAT_GRAYSCALE:
WRITE_REGS_OR_RETURN(ov2640_settings_yuv422);
break;
case PIXFORMAT_JPEG:
WRITE_REGS_OR_RETURN(ov2640_settings_jpeg3);
break;
default:
ret = -1;
break;
}
if(!ret) {
vTaskDelay(10 / portTICK_PERIOD_MS);
}
return ret;
}
static int set_window(sensor_t *sensor, ov2640_sensor_mode_t mode, int offset_x, int offset_y, int max_x, int max_y, int w, int h){
int ret = 0;
const uint8_t (*regs)[2];
ov2640_clk_t c;
c.reserved = 0;
max_x /= 4;
max_y /= 4;
w /= 4;
h /= 4;
uint8_t win_regs[][2] = {
{BANK_SEL, BANK_DSP},
{HSIZE, max_x & 0xFF},
{VSIZE, max_y & 0xFF},
{XOFFL, offset_x & 0xFF},
{YOFFL, offset_y & 0xFF},
{VHYX, ((max_y >> 1) & 0X80) | ((offset_y >> 4) & 0X70) | ((max_x >> 5) & 0X08) | ((offset_y >> 8) & 0X07)},
{TEST, (max_x >> 2) & 0X80},
{ZMOW, (w)&0xFF},
{ZMOH, (h)&0xFF},
{ZMHH, ((h>>6)&0x04)|((w>>8)&0x03)},
{0, 0}
};
c.pclk_auto = 0;
c.pclk_div = 8;
c.clk_2x = 0;
c.clk_div = 0;
if(sensor->pixformat != PIXFORMAT_JPEG){
c.pclk_auto = 1;
c.clk_div = 7;
}
if (mode == OV2640_MODE_CIF) {
regs = ov2640_settings_to_cif;
if(sensor->pixformat != PIXFORMAT_JPEG){
c.clk_div = 3;
}
} else if (mode == OV2640_MODE_SVGA) {
regs = ov2640_settings_to_svga;
} else {
regs = ov2640_settings_to_uxga;
c.pclk_div = 12;
}
WRITE_REG_OR_RETURN(BANK_DSP, R_BYPASS, R_BYPASS_DSP_BYPAS);
WRITE_REGS_OR_RETURN(regs);
WRITE_REGS_OR_RETURN(win_regs);
WRITE_REG_OR_RETURN(BANK_SENSOR, CLKRC, c.clk);
WRITE_REG_OR_RETURN(BANK_DSP, R_DVP_SP, c.pclk);
WRITE_REG_OR_RETURN(BANK_DSP, R_BYPASS, R_BYPASS_DSP_EN);
vTaskDelay(10 / portTICK_PERIOD_MS);
//required when changing resolution
set_pixformat(sensor, sensor->pixformat);
return ret;
}
static int set_framesize(sensor_t *sensor, framesize_t framesize)
{
int ret = 0;
uint16_t w = resolution[framesize].width;
uint16_t h = resolution[framesize].height;
aspect_ratio_t ratio = resolution[framesize].aspect_ratio;
uint16_t max_x = ratio_table[ratio].max_x;
uint16_t max_y = ratio_table[ratio].max_y;
uint16_t offset_x = ratio_table[ratio].offset_x;
uint16_t offset_y = ratio_table[ratio].offset_y;
ov2640_sensor_mode_t mode = OV2640_MODE_UXGA;
sensor->status.framesize = framesize;
if (framesize <= FRAMESIZE_CIF) {
mode = OV2640_MODE_CIF;
max_x /= 4;
max_y /= 4;
offset_x /= 4;
offset_y /= 4;
if(max_y > 296){
max_y = 296;
}
} else if (framesize <= FRAMESIZE_SVGA) {
mode = OV2640_MODE_SVGA;
max_x /= 2;
max_y /= 2;
offset_x /= 2;
offset_y /= 2;
}
ret = set_window(sensor, mode, offset_x, offset_y, max_x, max_y, w, h);
return ret;
}
static int set_contrast(sensor_t *sensor, int level)
{
int ret=0;
level += 3;
if (level <= 0 || level > NUM_CONTRAST_LEVELS) {
return -1;
}
sensor->status.contrast = level-3;
for (int i=0; i<7; i++) {
WRITE_REG_OR_RETURN(BANK_DSP, contrast_regs[0][i], contrast_regs[level][i]);
}
return ret;
}
static int set_brightness(sensor_t *sensor, int level)
{
int ret=0;
level += 3;
if (level <= 0 || level > NUM_BRIGHTNESS_LEVELS) {
return -1;
}
sensor->status.brightness = level-3;
for (int i=0; i<5; i++) {
WRITE_REG_OR_RETURN(BANK_DSP, brightness_regs[0][i], brightness_regs[level][i]);
}
return ret;
}
static int set_saturation(sensor_t *sensor, int level)
{
int ret=0;
level += 3;
if (level <= 0 || level > NUM_SATURATION_LEVELS) {
return -1;
}
sensor->status.saturation = level-3;
for (int i=0; i<5; i++) {
WRITE_REG_OR_RETURN(BANK_DSP, saturation_regs[0][i], saturation_regs[level][i]);
}
return ret;
}
static int set_special_effect(sensor_t *sensor, int effect)
{
int ret=0;
effect++;
if (effect <= 0 || effect > NUM_SPECIAL_EFFECTS) {
return -1;
}
sensor->status.special_effect = effect-1;
for (int i=0; i<5; i++) {
WRITE_REG_OR_RETURN(BANK_DSP, special_effects_regs[0][i], special_effects_regs[effect][i]);
}
return ret;
}
static int set_wb_mode(sensor_t *sensor, int mode)
{
int ret=0;
if (mode < 0 || mode > NUM_WB_MODES) {
return -1;
}
sensor->status.wb_mode = mode;
SET_REG_BITS_OR_RETURN(BANK_DSP, 0XC7, 6, 1, mode?1:0);
if(mode) {
for (int i=0; i<3; i++) {
WRITE_REG_OR_RETURN(BANK_DSP, wb_modes_regs[0][i], wb_modes_regs[mode][i]);
}
}
return ret;
}
static int set_ae_level(sensor_t *sensor, int level)
{
int ret=0;
level += 3;
if (level <= 0 || level > NUM_AE_LEVELS) {
return -1;
}
sensor->status.ae_level = level-3;
for (int i=0; i<3; i++) {
WRITE_REG_OR_RETURN(BANK_SENSOR, ae_levels_regs[0][i], ae_levels_regs[level][i]);
}
return ret;
}
static int set_quality(sensor_t *sensor, int quality)
{
if(quality < 0) {
quality = 0;
} else if(quality > 63) {
quality = 63;
}
sensor->status.quality = quality;
return write_reg(sensor, BANK_DSP, QS, quality);
}
static int set_agc_gain(sensor_t *sensor, int gain)
{
if(gain < 0) {
gain = 0;
} else if(gain > 30) {
gain = 30;
}
sensor->status.agc_gain = gain;
return write_reg(sensor, BANK_SENSOR, GAIN, agc_gain_tbl[gain]);
}
static int set_gainceiling_sensor(sensor_t *sensor, gainceiling_t gainceiling)
{
sensor->status.gainceiling = gainceiling;
//return write_reg(sensor, BANK_SENSOR, COM9, COM9_AGC_SET(gainceiling));
return set_reg_bits(sensor, BANK_SENSOR, COM9, 5, 7, gainceiling);
}
static int set_aec_value(sensor_t *sensor, int value)
{
if(value < 0) {
value = 0;
} else if(value > 1200) {
value = 1200;
}
sensor->status.aec_value = value;
return set_reg_bits(sensor, BANK_SENSOR, REG04, 0, 3, value & 0x3)
|| write_reg(sensor, BANK_SENSOR, AEC, (value >> 2) & 0xFF)
|| set_reg_bits(sensor, BANK_SENSOR, REG45, 0, 0x3F, value >> 10);
}
static int set_aec2(sensor_t *sensor, int enable)
{
sensor->status.aec2 = enable;
return set_reg_bits(sensor, BANK_DSP, CTRL0, 6, 1, enable?0:1);
}
static int set_colorbar(sensor_t *sensor, int enable)
{
sensor->status.colorbar = enable;
return write_reg_bits(sensor, BANK_SENSOR, COM7, COM7_COLOR_BAR, enable?1:0);
}
static int set_agc_sensor(sensor_t *sensor, int enable)
{
sensor->status.agc = enable;
return write_reg_bits(sensor, BANK_SENSOR, COM8, COM8_AGC_EN, enable?1:0);
}
static int set_aec_sensor(sensor_t *sensor, int enable)
{
sensor->status.aec = enable;
return write_reg_bits(sensor, BANK_SENSOR, COM8, COM8_AEC_EN, enable?1:0);
}
static int set_hmirror_sensor(sensor_t *sensor, int enable)
{
sensor->status.hmirror = enable;
return write_reg_bits(sensor, BANK_SENSOR, REG04, REG04_HFLIP_IMG, enable?1:0);
}
static int set_vflip_sensor(sensor_t *sensor, int enable)
{
int ret = 0;
sensor->status.vflip = enable;
ret = write_reg_bits(sensor, BANK_SENSOR, REG04, REG04_VREF_EN, enable?1:0);
return ret & write_reg_bits(sensor, BANK_SENSOR, REG04, REG04_VFLIP_IMG, enable?1:0);
}
static int set_raw_gma_dsp(sensor_t *sensor, int enable)
{
sensor->status.raw_gma = enable;
return set_reg_bits(sensor, BANK_DSP, CTRL1, 5, 1, enable?1:0);
}
static int set_awb_dsp(sensor_t *sensor, int enable)
{
sensor->status.awb = enable;
return set_reg_bits(sensor, BANK_DSP, CTRL1, 3, 1, enable?1:0);
}
static int set_awb_gain_dsp(sensor_t *sensor, int enable)
{
sensor->status.awb_gain = enable;
return set_reg_bits(sensor, BANK_DSP, CTRL1, 2, 1, enable?1:0);
}
static int set_lenc_dsp(sensor_t *sensor, int enable)
{
sensor->status.lenc = enable;
return set_reg_bits(sensor, BANK_DSP, CTRL1, 1, 1, enable?1:0);
}
static int set_dcw_dsp(sensor_t *sensor, int enable)
{
sensor->status.dcw = enable;
return set_reg_bits(sensor, BANK_DSP, CTRL2, 5, 1, enable?1:0);
}
static int set_bpc_dsp(sensor_t *sensor, int enable)
{
sensor->status.bpc = enable;
return set_reg_bits(sensor, BANK_DSP, CTRL3, 7, 1, enable?1:0);
}
static int set_wpc_dsp(sensor_t *sensor, int enable)
{
sensor->status.wpc = enable;
return set_reg_bits(sensor, BANK_DSP, CTRL3, 6, 1, enable?1:0);
}
//unsupported
static int set_sharpness(sensor_t *sensor, int level)
{
return -1;
}
static int set_denoise(sensor_t *sensor, int level)
{
return -1;
}
static int get_reg(sensor_t *sensor, int reg, int mask)
{
int ret = read_reg(sensor, (reg >> 8) & 0x01, reg & 0xFF);
if(ret > 0){
ret &= mask;
}
return ret;
}
static int set_reg(sensor_t *sensor, int reg, int mask, int value)
{
int ret = 0;
ret = read_reg(sensor, (reg >> 8) & 0x01, reg & 0xFF);
if(ret < 0){
return ret;
}
value = (ret & ~mask) | (value & mask);
ret = write_reg(sensor, (reg >> 8) & 0x01, reg & 0xFF, value);
return ret;
}
static int set_res_raw(sensor_t *sensor, int startX, int startY, int endX, int endY, int offsetX, int offsetY, int totalX, int totalY, int outputX, int outputY, bool scale, bool binning)
{
return set_window(sensor, (ov2640_sensor_mode_t)startX, offsetX, offsetY, totalX, totalY, outputX, outputY);
}
static int _set_pll(sensor_t *sensor, int bypass, int multiplier, int sys_div, int root_2x, int pre_div, int seld5, int pclk_manual, int pclk_div)
{
return -1;
}
esp_err_t xclk_timer_conf(int ledc_timer, int xclk_freq_hz);
static int set_xclk(sensor_t *sensor, int timer, int xclk)
{
int ret = 0;
sensor->xclk_freq_hz = xclk * 1000000U;
ret = xclk_timer_conf(timer, sensor->xclk_freq_hz);
return ret;
}
static int init_status(sensor_t *sensor){
sensor->status.brightness = 0;
sensor->status.contrast = 0;
sensor->status.saturation = 0;
sensor->status.ae_level = 0;
sensor->status.special_effect = 0;
sensor->status.wb_mode = 0;
sensor->status.agc_gain = 30;
int agc_gain = read_reg(sensor, BANK_SENSOR, GAIN);
for (int i=0; i<30; i++){
if(agc_gain >= agc_gain_tbl[i] && agc_gain < agc_gain_tbl[i+1]){
sensor->status.agc_gain = i;
break;
}
}
sensor->status.aec_value = ((uint16_t)get_reg_bits(sensor, BANK_SENSOR, REG45, 0, 0x3F) << 10)
| ((uint16_t)read_reg(sensor, BANK_SENSOR, AEC) << 2)
| get_reg_bits(sensor, BANK_SENSOR, REG04, 0, 3);//0 - 1200
sensor->status.quality = read_reg(sensor, BANK_DSP, QS);
sensor->status.gainceiling = get_reg_bits(sensor, BANK_SENSOR, COM9, 5, 7);
sensor->status.awb = get_reg_bits(sensor, BANK_DSP, CTRL1, 3, 1);
sensor->status.awb_gain = get_reg_bits(sensor, BANK_DSP, CTRL1, 2, 1);
sensor->status.aec = get_reg_bits(sensor, BANK_SENSOR, COM8, 0, 1);
sensor->status.aec2 = get_reg_bits(sensor, BANK_DSP, CTRL0, 6, 1);
sensor->status.agc = get_reg_bits(sensor, BANK_SENSOR, COM8, 2, 1);
sensor->status.bpc = get_reg_bits(sensor, BANK_DSP, CTRL3, 7, 1);
sensor->status.wpc = get_reg_bits(sensor, BANK_DSP, CTRL3, 6, 1);
sensor->status.raw_gma = get_reg_bits(sensor, BANK_DSP, CTRL1, 5, 1);
sensor->status.lenc = get_reg_bits(sensor, BANK_DSP, CTRL1, 1, 1);
sensor->status.hmirror = get_reg_bits(sensor, BANK_SENSOR, REG04, 7, 1);
sensor->status.vflip = get_reg_bits(sensor, BANK_SENSOR, REG04, 6, 1);
sensor->status.dcw = get_reg_bits(sensor, BANK_DSP, CTRL2, 5, 1);
sensor->status.colorbar = get_reg_bits(sensor, BANK_SENSOR, COM7, 1, 1);
sensor->status.sharpness = 0;//not supported
sensor->status.denoise = 0;
return 0;
}
int ov2640_init(sensor_t *sensor)
{
sensor->reset = reset;
sensor->init_status = init_status;
sensor->set_pixformat = set_pixformat;
sensor->set_framesize = set_framesize;
sensor->set_contrast = set_contrast;
sensor->set_brightness= set_brightness;
sensor->set_saturation= set_saturation;
sensor->set_quality = set_quality;
sensor->set_colorbar = set_colorbar;
sensor->set_gainceiling = set_gainceiling_sensor;
sensor->set_gain_ctrl = set_agc_sensor;
sensor->set_exposure_ctrl = set_aec_sensor;
sensor->set_hmirror = set_hmirror_sensor;
sensor->set_vflip = set_vflip_sensor;
sensor->set_whitebal = set_awb_dsp;
sensor->set_aec2 = set_aec2;
sensor->set_aec_value = set_aec_value;
sensor->set_special_effect = set_special_effect;
sensor->set_wb_mode = set_wb_mode;
sensor->set_ae_level = set_ae_level;
sensor->set_dcw = set_dcw_dsp;
sensor->set_bpc = set_bpc_dsp;
sensor->set_wpc = set_wpc_dsp;
sensor->set_awb_gain = set_awb_gain_dsp;
sensor->set_agc_gain = set_agc_gain;
sensor->set_raw_gma = set_raw_gma_dsp;
sensor->set_lenc = set_lenc_dsp;
//not supported
sensor->set_sharpness = set_sharpness;
sensor->set_denoise = set_denoise;
sensor->get_reg = get_reg;
sensor->set_reg = set_reg;
sensor->set_res_raw = set_res_raw;
sensor->set_pll = _set_pll;
sensor->set_xclk = set_xclk;
ESP_LOGD(TAG, "OV2640 Attached");
return 0;
}

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esp32-cam/ov2640.h
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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* OV2640 driver.
*
*/
#ifndef __OV2640_H__
#define __OV2640_H__
#include "sensor.h"
int ov2640_init(sensor_t *sensor);
#endif // __OV2640_H__

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esp32-cam/ov2640_regs.h
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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* OV2640 register definitions.
*/
#ifndef __REG_REGS_H__
#define __REG_REGS_H__
/* DSP register bank FF=0x00*/
#define R_BYPASS 0x05
#define QS 0x44
#define CTRLI 0x50
#define HSIZE 0x51
#define VSIZE 0x52
#define XOFFL 0x53
#define YOFFL 0x54
#define VHYX 0x55
#define DPRP 0x56
#define TEST 0x57
#define ZMOW 0x5A
#define ZMOH 0x5B
#define ZMHH 0x5C
#define BPADDR 0x7C
#define BPDATA 0x7D
#define CTRL2 0x86
#define CTRL3 0x87
#define SIZEL 0x8C
#define HSIZE8 0xC0
#define VSIZE8 0xC1
#define CTRL0 0xC2
#define CTRL1 0xC3
#define R_DVP_SP 0xD3
#define IMAGE_MODE 0xDA
#define RESET 0xE0
#define MS_SP 0xF0
#define SS_ID 0xF7
#define SS_CTRL 0xF7
#define MC_BIST 0xF9
#define MC_AL 0xFA
#define MC_AH 0xFB
#define MC_D 0xFC
#define P_CMD 0xFD
#define P_STATUS 0xFE
#define BANK_SEL 0xFF
#define CTRLI_LP_DP 0x80
#define CTRLI_ROUND 0x40
#define CTRL0_AEC_EN 0x80
#define CTRL0_AEC_SEL 0x40
#define CTRL0_STAT_SEL 0x20
#define CTRL0_VFIRST 0x10
#define CTRL0_YUV422 0x08
#define CTRL0_YUV_EN 0x04
#define CTRL0_RGB_EN 0x02
#define CTRL0_RAW_EN 0x01
#define CTRL2_DCW_EN 0x20
#define CTRL2_SDE_EN 0x10
#define CTRL2_UV_ADJ_EN 0x08
#define CTRL2_UV_AVG_EN 0x04
#define CTRL2_CMX_EN 0x01
#define CTRL3_BPC_EN 0x80
#define CTRL3_WPC_EN 0x40
#define R_DVP_SP_AUTO_MODE 0x80
#define R_BYPASS_DSP_EN 0x00
#define R_BYPASS_DSP_BYPAS 0x01
#define IMAGE_MODE_Y8_DVP_EN 0x40
#define IMAGE_MODE_JPEG_EN 0x10
#define IMAGE_MODE_YUV422 0x00
#define IMAGE_MODE_RAW10 0x04
#define IMAGE_MODE_RGB565 0x08
#define IMAGE_MODE_HREF_VSYNC 0x02
#define IMAGE_MODE_LBYTE_FIRST 0x01
#define RESET_MICROC 0x40
#define RESET_SCCB 0x20
#define RESET_JPEG 0x10
#define RESET_DVP 0x04
#define RESET_IPU 0x02
#define RESET_CIF 0x01
#define MC_BIST_RESET 0x80
#define MC_BIST_BOOT_ROM_SEL 0x40
#define MC_BIST_12KB_SEL 0x20
#define MC_BIST_12KB_MASK 0x30
#define MC_BIST_512KB_SEL 0x08
#define MC_BIST_512KB_MASK 0x0C
#define MC_BIST_BUSY_BIT_R 0x02
#define MC_BIST_MC_RES_ONE_SH_W 0x02
#define MC_BIST_LAUNCH 0x01
typedef enum {
BANK_DSP, BANK_SENSOR, BANK_MAX
} ov2640_bank_t;
/* Sensor register bank FF=0x01*/
#define GAIN 0x00
#define COM1 0x03
#define REG04 0x04
#define REG08 0x08
#define COM2 0x09
#define REG_PID 0x0A
#define REG_VER 0x0B
#define COM3 0x0C
#define COM4 0x0D
#define AEC 0x10
#define CLKRC 0x11
#define COM7 0x12
#define COM8 0x13
#define COM9 0x14 /* AGC gain ceiling */
#define COM10 0x15
#define HSTART 0x17
#define HSTOP 0x18
#define VSTART 0x19
#define VSTOP 0x1A
#define MIDH 0x1C
#define MIDL 0x1D
#define AEW 0x24
#define AEB 0x25
#define VV 0x26
#define REG2A 0x2A
#define FRARL 0x2B
#define ADDVSL 0x2D
#define ADDVSH 0x2E
#define YAVG 0x2F
#define HSDY 0x30
#define HEDY 0x31
#define REG32 0x32
#define ARCOM2 0x34
#define REG45 0x45
#define FLL 0x46
#define FLH 0x47
#define COM19 0x48
#define ZOOMS 0x49
#define COM22 0x4B
#define COM25 0x4E
#define BD50 0x4F
#define BD60 0x50
#define REG5D 0x5D
#define REG5E 0x5E
#define REG5F 0x5F
#define REG60 0x60
#define HISTO_LOW 0x61
#define HISTO_HIGH 0x62
#define REG04_DEFAULT 0x28
#define REG04_HFLIP_IMG 0x80
#define REG04_VFLIP_IMG 0x40
#define REG04_VREF_EN 0x10
#define REG04_HREF_EN 0x08
#define REG04_SET(x) (REG04_DEFAULT|x)
#define COM2_STDBY 0x10
#define COM2_OUT_DRIVE_1x 0x00
#define COM2_OUT_DRIVE_2x 0x01
#define COM2_OUT_DRIVE_3x 0x02
#define COM2_OUT_DRIVE_4x 0x03
#define COM3_DEFAULT 0x38
#define COM3_BAND_50Hz 0x04
#define COM3_BAND_60Hz 0x00
#define COM3_BAND_AUTO 0x02
#define COM3_BAND_SET(x) (COM3_DEFAULT|x)
#define COM7_SRST 0x80
#define COM7_RES_UXGA 0x00 /* UXGA */
#define COM7_RES_SVGA 0x40 /* SVGA */
#define COM7_RES_CIF 0x20 /* CIF */
#define COM7_ZOOM_EN 0x04 /* Enable Zoom */
#define COM7_COLOR_BAR 0x02 /* Enable Color Bar Test */
#define COM8_DEFAULT 0xC0
#define COM8_BNDF_EN 0x20 /* Enable Banding filter */
#define COM8_AGC_EN 0x04 /* AGC Auto/Manual control selection */
#define COM8_AEC_EN 0x01 /* Auto/Manual Exposure control */
#define COM8_SET(x) (COM8_DEFAULT|x)
#define COM9_DEFAULT 0x08
#define COM9_AGC_GAIN_2x 0x00 /* AGC: 2x */
#define COM9_AGC_GAIN_4x 0x01 /* AGC: 4x */
#define COM9_AGC_GAIN_8x 0x02 /* AGC: 8x */
#define COM9_AGC_GAIN_16x 0x03 /* AGC: 16x */
#define COM9_AGC_GAIN_32x 0x04 /* AGC: 32x */
#define COM9_AGC_GAIN_64x 0x05 /* AGC: 64x */
#define COM9_AGC_GAIN_128x 0x06 /* AGC: 128x */
#define COM9_AGC_SET(x) (COM9_DEFAULT|(x<<5))
#define COM10_HREF_EN 0x80 /* HSYNC changes to HREF */
#define COM10_HSYNC_EN 0x40 /* HREF changes to HSYNC */
#define COM10_PCLK_FREE 0x20 /* PCLK output option: free running PCLK */
#define COM10_PCLK_EDGE 0x10 /* Data is updated at the rising edge of PCLK */
#define COM10_HREF_NEG 0x08 /* HREF negative */
#define COM10_VSYNC_NEG 0x02 /* VSYNC negative */
#define COM10_HSYNC_NEG 0x01 /* HSYNC negative */
#define CTRL1_AWB 0x08 /* Enable AWB */
#define VV_AGC_TH_SET(h,l) ((h<<4)|(l&0x0F))
#define REG32_UXGA 0x36
#define REG32_SVGA 0x09
#define REG32_CIF 0x89
#define CLKRC_2X 0x80
#define CLKRC_2X_UXGA (0x01 | CLKRC_2X)
#define CLKRC_2X_SVGA CLKRC_2X
#define CLKRC_2X_CIF CLKRC_2X
#endif //__REG_REGS_H__

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _OV2640_SETTINGS_H_
#define _OV2640_SETTINGS_H_
#include <stdint.h>
#include <stdbool.h>
#include "esp_attr.h"
#include "ov2640_regs.h"
typedef enum {
OV2640_MODE_UXGA, OV2640_MODE_SVGA, OV2640_MODE_CIF, OV2640_MODE_MAX
} ov2640_sensor_mode_t;
typedef struct {
union {
struct {
uint8_t pclk_div:7;
uint8_t pclk_auto:1;
};
uint8_t pclk;
};
union {
struct {
uint8_t clk_div:6;
uint8_t reserved:1;
uint8_t clk_2x:1;
};
uint8_t clk;
};
} ov2640_clk_t;
typedef struct {
uint16_t offset_x;
uint16_t offset_y;
uint16_t max_x;
uint16_t max_y;
} ov2640_ratio_settings_t;
static const DRAM_ATTR ov2640_ratio_settings_t ratio_table[] = {
// ox, oy, mx, my
{ 0, 0, 1600, 1200 }, //4x3
{ 8, 72, 1584, 1056 }, //3x2
{ 0, 100, 1600, 1000 }, //16x10
{ 0, 120, 1600, 960 }, //5x3
{ 0, 150, 1600, 900 }, //16x9
{ 2, 258, 1596, 684 }, //21x9
{ 50, 0, 1500, 1200 }, //5x4
{ 200, 0, 1200, 1200 }, //1x1
{ 462, 0, 676, 1200 } //9x16
};
// 30fps@24MHz
const DRAM_ATTR uint8_t ov2640_settings_cif[][2] = {
{BANK_SEL, BANK_DSP},
{0x2c, 0xff},
{0x2e, 0xdf},
{BANK_SEL, BANK_SENSOR},
{0x3c, 0x32},
{CLKRC, 0x01},
{COM2, COM2_OUT_DRIVE_3x},
{REG04, REG04_DEFAULT},
{COM8, COM8_DEFAULT | COM8_BNDF_EN | COM8_AGC_EN | COM8_AEC_EN},
{COM9, COM9_AGC_SET(COM9_AGC_GAIN_8x)},
{0x2c, 0x0c},
{0x33, 0x78},
{0x3a, 0x33},
{0x3b, 0xfB},
{0x3e, 0x00},
{0x43, 0x11},
{0x16, 0x10},
{0x39, 0x92},
{0x35, 0xda},
{0x22, 0x1a},
{0x37, 0xc3},
{0x23, 0x00},
{ARCOM2, 0xc0},
{0x06, 0x88},
{0x07, 0xc0},
{COM4, 0x87},
{0x0e, 0x41},
{0x4c, 0x00},
{0x4a, 0x81},
{0x21, 0x99},
{AEW, 0x40},
{AEB, 0x38},
{VV, VV_AGC_TH_SET(8,2)},
{0x5c, 0x00},
{0x63, 0x00},
{HISTO_LOW, 0x70},
{HISTO_HIGH, 0x80},
{0x7c, 0x05},
{0x20, 0x80},
{0x28, 0x30},
{0x6c, 0x00},
{0x6d, 0x80},
{0x6e, 0x00},
{0x70, 0x02},
{0x71, 0x94},
{0x73, 0xc1},
{0x3d, 0x34},
{0x5a, 0x57},
{BD50, 0xbb},
{BD60, 0x9c},
{COM7, COM7_RES_CIF},
{HSTART, 0x11},
{HSTOP, 0x43},
{VSTART, 0x00},
{VSTOP, 0x25},
{REG32, 0x89},
{0x37, 0xc0},
{BD50, 0xca},
{BD60, 0xa8},
{0x6d, 0x00},
{0x3d, 0x38},
{BANK_SEL, BANK_DSP},
{0xe5, 0x7f},
{MC_BIST, MC_BIST_RESET | MC_BIST_BOOT_ROM_SEL},
{0x41, 0x24},
{RESET, RESET_JPEG | RESET_DVP},
{0x76, 0xff},
{0x33, 0xa0},
{0x42, 0x20},
{0x43, 0x18},
{0x4c, 0x00},
{CTRL3, CTRL3_WPC_EN | 0x10 },
{0x88, 0x3f},
{0xd7, 0x03},
{0xd9, 0x10},
{R_DVP_SP, R_DVP_SP_AUTO_MODE | 0x02},
{0xc8, 0x08},
{0xc9, 0x80},
{BPADDR, 0x00},
{BPDATA, 0x00},
{BPADDR, 0x03},
{BPDATA, 0x48},
{BPDATA, 0x48},
{BPADDR, 0x08},
{BPDATA, 0x20},
{BPDATA, 0x10},
{BPDATA, 0x0e},
{0x90, 0x00},
{0x91, 0x0e},
{0x91, 0x1a},
{0x91, 0x31},
{0x91, 0x5a},
{0x91, 0x69},
{0x91, 0x75},
{0x91, 0x7e},
{0x91, 0x88},
{0x91, 0x8f},
{0x91, 0x96},
{0x91, 0xa3},
{0x91, 0xaf},
{0x91, 0xc4},
{0x91, 0xd7},
{0x91, 0xe8},
{0x91, 0x20},
{0x92, 0x00},
{0x93, 0x06},
{0x93, 0xe3},
{0x93, 0x05},
{0x93, 0x05},
{0x93, 0x00},
{0x93, 0x04},
{0x93, 0x00},
{0x93, 0x00},
{0x93, 0x00},
{0x93, 0x00},
{0x93, 0x00},
{0x93, 0x00},
{0x93, 0x00},
{0x96, 0x00},
{0x97, 0x08},
{0x97, 0x19},
{0x97, 0x02},
{0x97, 0x0c},
{0x97, 0x24},
{0x97, 0x30},
{0x97, 0x28},
{0x97, 0x26},
{0x97, 0x02},
{0x97, 0x98},
{0x97, 0x80},
{0x97, 0x00},
{0x97, 0x00},
{0xa4, 0x00},
{0xa8, 0x00},
{0xc5, 0x11},
{0xc6, 0x51},
{0xbf, 0x80},
{0xc7, 0x10},
{0xb6, 0x66},
{0xb8, 0xA5},
{0xb7, 0x64},
{0xb9, 0x7C},
{0xb3, 0xaf},
{0xb4, 0x97},
{0xb5, 0xFF},
{0xb0, 0xC5},
{0xb1, 0x94},
{0xb2, 0x0f},
{0xc4, 0x5c},
{CTRL1, 0xfd},
{0x7f, 0x00},
{0xe5, 0x1f},
{0xe1, 0x67},
{0xdd, 0x7f},
{IMAGE_MODE, 0x00},
{RESET, 0x00},
{R_BYPASS, R_BYPASS_DSP_EN},
{0, 0}
};
const DRAM_ATTR uint8_t ov2640_settings_to_cif[][2] = {
{BANK_SEL, BANK_SENSOR},
{COM7, COM7_RES_CIF},
//Set the sensor output window
{COM1, 0x0A},
{REG32, REG32_CIF},
{HSTART, 0x11},
{HSTOP, 0x43},
{VSTART, 0x00},
{VSTOP, 0x25},
//{CLKRC, 0x00},
{BD50, 0xca},
{BD60, 0xa8},
{0x5a, 0x23},
{0x6d, 0x00},
{0x3d, 0x38},
{0x39, 0x92},
{0x35, 0xda},
{0x22, 0x1a},
{0x37, 0xc3},
{0x23, 0x00},
{ARCOM2, 0xc0},
{0x06, 0x88},
{0x07, 0xc0},
{COM4, 0x87},
{0x0e, 0x41},
{0x4c, 0x00},
{BANK_SEL, BANK_DSP},
{RESET, RESET_DVP},
//Set the sensor resolution (UXGA, SVGA, CIF)
{HSIZE8, 0x32},
{VSIZE8, 0x25},
{SIZEL, 0x00},
//Set the image window size >= output size
{HSIZE, 0x64},
{VSIZE, 0x4a},
{XOFFL, 0x00},
{YOFFL, 0x00},
{VHYX, 0x00},
{TEST, 0x00},
{CTRL2, CTRL2_DCW_EN | 0x1D},
{CTRLI, CTRLI_LP_DP | 0x00},
//{R_DVP_SP, 0x08},
{0, 0}
};
const DRAM_ATTR uint8_t ov2640_settings_to_svga[][2] = {
{BANK_SEL, BANK_SENSOR},
{COM7, COM7_RES_SVGA},
//Set the sensor output window
{COM1, 0x0A},
{REG32, REG32_SVGA},
{HSTART, 0x11},
{HSTOP, 0x43},
{VSTART, 0x00},
{VSTOP, 0x4b},
//{CLKRC, 0x00},
{0x37, 0xc0},
{BD50, 0xca},
{BD60, 0xa8},
{0x5a, 0x23},
{0x6d, 0x00},
{0x3d, 0x38},
{0x39, 0x92},
{0x35, 0xda},
{0x22, 0x1a},
{0x37, 0xc3},
{0x23, 0x00},
{ARCOM2, 0xc0},
{0x06, 0x88},
{0x07, 0xc0},
{COM4, 0x87},
{0x0e, 0x41},
{0x42, 0x03},
{0x4c, 0x00},
{BANK_SEL, BANK_DSP},
{RESET, RESET_DVP},
//Set the sensor resolution (UXGA, SVGA, CIF)
{HSIZE8, 0x64},
{VSIZE8, 0x4B},
{SIZEL, 0x00},
//Set the image window size >= output size
{HSIZE, 0xC8},
{VSIZE, 0x96},
{XOFFL, 0x00},
{YOFFL, 0x00},
{VHYX, 0x00},
{TEST, 0x00},
{CTRL2, CTRL2_DCW_EN | 0x1D},
{CTRLI, CTRLI_LP_DP | 0x00},
//{R_DVP_SP, 0x08},
{0, 0}
};
const DRAM_ATTR uint8_t ov2640_settings_to_uxga[][2] = {
{BANK_SEL, BANK_SENSOR},
{COM7, COM7_RES_UXGA},
//Set the sensor output window
{COM1, 0x0F},
{REG32, REG32_UXGA},
{HSTART, 0x11},
{HSTOP, 0x75},
{VSTART, 0x01},
{VSTOP, 0x97},
//{CLKRC, 0x00},
{0x3d, 0x34},
{BD50, 0xbb},
{BD60, 0x9c},
{0x5a, 0x57},
{0x6d, 0x80},
{0x39, 0x82},
{0x23, 0x00},
{0x07, 0xc0},
{0x4c, 0x00},
{0x35, 0x88},
{0x22, 0x0a},
{0x37, 0x40},
{ARCOM2, 0xa0},
{0x06, 0x02},
{COM4, 0xb7},
{0x0e, 0x01},
{0x42, 0x83},
{BANK_SEL, BANK_DSP},
{RESET, RESET_DVP},
//Set the sensor resolution (UXGA, SVGA, CIF)
{HSIZE8, 0xc8},
{VSIZE8, 0x96},
{SIZEL, 0x00},
//Set the image window size >= output size
{HSIZE, 0x90},
{VSIZE, 0x2c},
{XOFFL, 0x00},
{YOFFL, 0x00},
{VHYX, 0x88},
{TEST, 0x00},
{CTRL2, CTRL2_DCW_EN | 0x1d},
{CTRLI, 0x00},
//{R_DVP_SP, 0x06},
{0, 0}
};
const DRAM_ATTR uint8_t ov2640_settings_jpeg3[][2] = {
{BANK_SEL, BANK_DSP},
{RESET, RESET_JPEG | RESET_DVP},
{IMAGE_MODE, IMAGE_MODE_JPEG_EN | IMAGE_MODE_HREF_VSYNC},
{0xD7, 0x03},
{0xE1, 0x77},
{0xE5, 0x1F},
{0xD9, 0x10},
{0xDF, 0x80},
{0x33, 0x80},
{0x3C, 0x10},
{0xEB, 0x30},
{0xDD, 0x7F},
{RESET, 0x00},
{0, 0}
};
static const uint8_t ov2640_settings_yuv422[][2] = {
{BANK_SEL, BANK_DSP},
{RESET, RESET_DVP},
{IMAGE_MODE, IMAGE_MODE_YUV422},
{0xD7, 0x01},
{0xE1, 0x67},
{RESET, 0x00},
{0, 0},
};
static const uint8_t ov2640_settings_rgb565[][2] = {
{BANK_SEL, BANK_DSP},
{RESET, RESET_DVP},
{IMAGE_MODE, IMAGE_MODE_RGB565},
{0xD7, 0x03},
{0xE1, 0x77},
{RESET, 0x00},
{0, 0},
};
#define NUM_BRIGHTNESS_LEVELS (5)
static const uint8_t brightness_regs[NUM_BRIGHTNESS_LEVELS + 1][5] = {
{BPADDR, BPDATA, BPADDR, BPDATA, BPDATA },
{0x00, 0x04, 0x09, 0x00, 0x00 }, /* -2 */
{0x00, 0x04, 0x09, 0x10, 0x00 }, /* -1 */
{0x00, 0x04, 0x09, 0x20, 0x00 }, /* 0 */
{0x00, 0x04, 0x09, 0x30, 0x00 }, /* +1 */
{0x00, 0x04, 0x09, 0x40, 0x00 }, /* +2 */
};
#define NUM_CONTRAST_LEVELS (5)
static const uint8_t contrast_regs[NUM_CONTRAST_LEVELS + 1][7] = {
{BPADDR, BPDATA, BPADDR, BPDATA, BPDATA, BPDATA, BPDATA },
{0x00, 0x04, 0x07, 0x20, 0x18, 0x34, 0x06 }, /* -2 */
{0x00, 0x04, 0x07, 0x20, 0x1c, 0x2a, 0x06 }, /* -1 */
{0x00, 0x04, 0x07, 0x20, 0x20, 0x20, 0x06 }, /* 0 */
{0x00, 0x04, 0x07, 0x20, 0x24, 0x16, 0x06 }, /* +1 */
{0x00, 0x04, 0x07, 0x20, 0x28, 0x0c, 0x06 }, /* +2 */
};
#define NUM_SATURATION_LEVELS (5)
static const uint8_t saturation_regs[NUM_SATURATION_LEVELS + 1][5] = {
{BPADDR, BPDATA, BPADDR, BPDATA, BPDATA },
{0x00, 0x02, 0x03, 0x28, 0x28 }, /* -2 */
{0x00, 0x02, 0x03, 0x38, 0x38 }, /* -1 */
{0x00, 0x02, 0x03, 0x48, 0x48 }, /* 0 */
{0x00, 0x02, 0x03, 0x58, 0x58 }, /* +1 */
{0x00, 0x02, 0x03, 0x68, 0x68 }, /* +2 */
};
#define NUM_SPECIAL_EFFECTS (7)
static const uint8_t special_effects_regs[NUM_SPECIAL_EFFECTS + 1][5] = {
{BPADDR, BPDATA, BPADDR, BPDATA, BPDATA },
{0x00, 0X00, 0x05, 0X80, 0X80 }, /* no effect */
{0x00, 0X40, 0x05, 0X80, 0X80 }, /* negative */
{0x00, 0X18, 0x05, 0X80, 0X80 }, /* black and white */
{0x00, 0X18, 0x05, 0X40, 0XC0 }, /* reddish */
{0x00, 0X18, 0x05, 0X40, 0X40 }, /* greenish */
{0x00, 0X18, 0x05, 0XA0, 0X40 }, /* blue */
{0x00, 0X18, 0x05, 0X40, 0XA6 }, /* retro */
};
#define NUM_WB_MODES (4)
static const uint8_t wb_modes_regs[NUM_WB_MODES + 1][3] = {
{0XCC, 0XCD, 0XCE },
{0x5E, 0X41, 0x54 }, /* sunny */
{0x65, 0X41, 0x4F }, /* cloudy */
{0x52, 0X41, 0x66 }, /* office */
{0x42, 0X3F, 0x71 }, /* home */
};
#define NUM_AE_LEVELS (5)
static const uint8_t ae_levels_regs[NUM_AE_LEVELS + 1][3] = {
{ AEW, AEB, VV },
{0x20, 0X18, 0x60 },
{0x34, 0X1C, 0x00 },
{0x3E, 0X38, 0x81 },
{0x48, 0X40, 0x81 },
{0x58, 0X50, 0x92 },
};
const uint8_t agc_gain_tbl[31] = {
0x00, 0x10, 0x18, 0x30, 0x34, 0x38, 0x3C, 0x70, 0x72, 0x74, 0x76, 0x78, 0x7A, 0x7C, 0x7E, 0xF0,
0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
};
#endif /* _OV2640_SETTINGS_H_ */

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esp32-cam/ov3660.c
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esp32-cam/ov3660.h
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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* OV3660 driver.
*
*/
#ifndef __OV3660_H__
#define __OV3660_H__
#include "sensor.h"
int ov3660_init(sensor_t *sensor);
#endif // __OV3660_H__

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esp32-cam/ov3660_regs.h
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/*
* OV3660 register definitions.
*/
#ifndef __OV3660_REG_REGS_H__
#define __OV3660_REG_REGS_H__
/* system control registers */
#define SYSTEM_CTROL0 0x3008 // Bit[7]: Software reset
// Bit[6]: Software power down
// Bit[5]: Reserved
// Bit[4]: SRB clock SYNC enable
// Bit[3]: Isolation suspend select
// Bit[2:0]: Not used
/* output format control registers */
#define FORMAT_CTRL 0x501F // Format select
// Bit[2:0]:
// 000: YUV422
// 001: RGB
// 010: Dither
// 011: RAW after DPC
// 101: RAW after CIP
/* format control registers */
#define FORMAT_CTRL00 0x4300
/* frame control registers */
#define FRAME_CTRL01 0x4201 // Control Passed Frame Number When both ON and OFF number set to 0x00,frame control is in bypass mode
// Bit[7:4]: Not used
// Bit[3:0]: Frame ON number
#define FRAME_CTRL02 0x4202 // Control Masked Frame Number When both ON and OFF number set to 0x00,frame control is in bypass mode
// Bit[7:4]: Not used
// BIT[3:0]: Frame OFF number
/* ISP top control registers */
#define PRE_ISP_TEST_SETTING_1 0x503D // Bit[7]: Test enable
// 0: Test disable
// 1: Color bar enable
// Bit[6]: Rolling
// Bit[5]: Transparent
// Bit[4]: Square black and white
// Bit[3:2]: Color bar style
// 00: Standard 8 color bar
// 01: Gradual change at vertical mode 1
// 10: Gradual change at horizontal
// 11: Gradual change at vertical mode 2
// Bit[1:0]: Test select
// 00: Color bar
// 01: Random data
// 10: Square data
// 11: Black image
//exposure = {0x3500[3:0], 0x3501[7:0], 0x3502[7:0]} / 16 × tROW
/* AEC/AGC control functions */
#define AEC_PK_MANUAL 0x3503 // AEC Manual Mode Control
// Bit[7:6]: Reserved
// Bit[5]: Gain delay option
// Valid when 0x3503[4]=1’b0
// 0: Delay one frame latch
// 1: One frame latch
// Bit[4:2]: Reserved
// Bit[1]: AGC manual
// 0: Auto enable
// 1: Manual enable
// Bit[0]: AEC manual
// 0: Auto enable
// 1: Manual enable
//gain = {0x350A[1:0], 0x350B[7:0]} / 16
/* mirror and flip registers */
#define TIMING_TC_REG20 0x3820 // Timing Control Register
// Bit[2:1]: Vertical flip enable
// 00: Normal
// 11: Vertical flip
// Bit[0]: Vertical binning enable
#define TIMING_TC_REG21 0x3821 // Timing Control Register
// Bit[5]: Compression Enable
// Bit[2:1]: Horizontal mirror enable
// 00: Normal
// 11: Horizontal mirror
// Bit[0]: Horizontal binning enable
#define CLOCK_POL_CONTROL 0x4740// Bit[5]: PCLK polarity 0: active low
// 1: active high
// Bit[3]: Gate PCLK under VSYNC
// Bit[2]: Gate PCLK under HREF
// Bit[1]: HREF polarity
// 0: active low
// 1: active high
// Bit[0] VSYNC polarity
// 0: active low
// 1: active high
#define DRIVE_CAPABILITY 0x302c // Bit[7:6]:
// 00: 1x
// 01: 2x
// 10: 3x
// 11: 4x
#define X_ADDR_ST_H 0x3800 //Bit[3:0]: X address start[11:8]
#define X_ADDR_ST_L 0x3801 //Bit[7:0]: X address start[7:0]
#define Y_ADDR_ST_H 0x3802 //Bit[2:0]: Y address start[10:8]
#define Y_ADDR_ST_L 0x3803 //Bit[7:0]: Y address start[7:0]
#define X_ADDR_END_H 0x3804 //Bit[3:0]: X address end[11:8]
#define X_ADDR_END_L 0x3805 //Bit[7:0]:
#define Y_ADDR_END_H 0x3806 //Bit[2:0]: Y address end[10:8]
#define Y_ADDR_END_L 0x3807 //Bit[7:0]:
// Size after scaling
#define X_OUTPUT_SIZE_H 0x3808 //Bit[3:0]: DVP output horizontal width[11:8]
#define X_OUTPUT_SIZE_L 0x3809 //Bit[7:0]:
#define Y_OUTPUT_SIZE_H 0x380a //Bit[2:0]: DVP output vertical height[10:8]
#define Y_OUTPUT_SIZE_L 0x380b //Bit[7:0]:
#define X_TOTAL_SIZE_H 0x380c //Bit[3:0]: Total horizontal size[11:8]
#define X_TOTAL_SIZE_L 0x380d //Bit[7:0]:
#define Y_TOTAL_SIZE_H 0x380e //Bit[7:0]: Total vertical size[15:8]
#define Y_TOTAL_SIZE_L 0x380f //Bit[7:0]:
#define X_OFFSET_H 0x3810 //Bit[3:0]: ISP horizontal offset[11:8]
#define X_OFFSET_L 0x3811 //Bit[7:0]:
#define Y_OFFSET_H 0x3812 //Bit[2:0]: ISP vertical offset[10:8]
#define Y_OFFSET_L 0x3813 //Bit[7:0]:
#define X_INCREMENT 0x3814 //Bit[7:4]: Horizontal odd subsample increment
//Bit[3:0]: Horizontal even subsample increment
#define Y_INCREMENT 0x3815 //Bit[7:4]: Vertical odd subsample increment
//Bit[3:0]: Vertical even subsample increment
// Size before scaling
//#define X_INPUT_SIZE (X_ADDR_END - X_ADDR_ST + 1 - (2 * X_OFFSET))
//#define Y_INPUT_SIZE (Y_ADDR_END - Y_ADDR_ST + 1 - (2 * Y_OFFSET))
#define ISP_CONTROL_01 0x5001 // Bit[5]: Scale enable
// 0: Disable
// 1: Enable
#define SCALE_CTRL_1 0x5601 // Bit[6:4]: HDIV RW
// DCW scale times
// 000: DCW 1 time
// 001: DCW 2 times
// 010: DCW 4 times
// 100: DCW 8 times
// 101: DCW 16 times
// Others: DCW 16 times
// Bit[2:0]: VDIV RW
// DCW scale times
// 000: DCW 1 time
// 001: DCW 2 times
// 010: DCW 4 times
// 100: DCW 8 times
// 101: DCW 16 times
// Others: DCW 16 times
#define SCALE_CTRL_2 0x5602 // X_SCALE High Bits
#define SCALE_CTRL_3 0x5603 // X_SCALE Low Bits
#define SCALE_CTRL_4 0x5604 // Y_SCALE High Bits
#define SCALE_CTRL_5 0x5605 // Y_SCALE Low Bits
#define SCALE_CTRL_6 0x5606 // Bit[3:0]: V Offset
#define PCLK_RATIO 0x3824 // Bit[4:0]: PCLK ratio manual
#define VFIFO_CTRL0C 0x460C // Bit[1]: PCLK manual enable
// 0: Auto
// 1: Manual by PCLK_RATIO
#define VFIFO_X_SIZE_H 0x4602
#define VFIFO_X_SIZE_L 0x4603
#define VFIFO_Y_SIZE_H 0x4604
#define VFIFO_Y_SIZE_L 0x4605
#define SC_PLLS_CTRL0 0x303a // Bit[7]: PLLS bypass
#define SC_PLLS_CTRL1 0x303b // Bit[4:0]: PLLS multiplier
#define SC_PLLS_CTRL2 0x303c // Bit[6:4]: PLLS charge pump control
// Bit[3:0]: PLLS system divider
#define SC_PLLS_CTRL3 0x303d // Bit[5:4]: PLLS pre-divider
// 00: 1
// 01: 1.5
// 10: 2
// 11: 3
// Bit[2]: PLLS root-divider - 1
// Bit[1:0]: PLLS seld5
// 00: 1
// 01: 1
// 10: 2
// 11: 2.5
#define COMPRESSION_CTRL00 0x4400 //
#define COMPRESSION_CTRL01 0x4401 //
#define COMPRESSION_CTRL02 0x4402 //
#define COMPRESSION_CTRL03 0x4403 //
#define COMPRESSION_CTRL04 0x4404 //
#define COMPRESSION_CTRL05 0x4405 //
#define COMPRESSION_CTRL06 0x4406 //
#define COMPRESSION_CTRL07 0x4407 // Bit[5:0]: QS
#define COMPRESSION_ISI_CTRL 0x4408 //
#define COMPRESSION_CTRL09 0x4409 //
#define COMPRESSION_CTRL0a 0x440a //
#define COMPRESSION_CTRL0b 0x440b //
#define COMPRESSION_CTRL0c 0x440c //
#define COMPRESSION_CTRL0d 0x440d //
#define COMPRESSION_CTRL0E 0x440e //
/**
* @brief register value
*/
#define TEST_COLOR_BAR 0xC0 /* Enable Color Bar roling Test */
#define AEC_PK_MANUAL_AGC_MANUALEN 0x02 /* Enable AGC Manual enable */
#define AEC_PK_MANUAL_AEC_MANUALEN 0x01 /* Enable AEC Manual enable */
#define TIMING_TC_REG20_VFLIP 0x06 /* Vertical flip enable */
#define TIMING_TC_REG21_HMIRROR 0x06 /* Horizontal mirror enable */
#endif // __OV3660_REG_REGS_H__

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esp32-cam/ov3660_settings.h
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#ifndef _OV3660_SETTINGS_H_
#define _OV3660_SETTINGS_H_
#include <stdint.h>
#include <stdbool.h>
#include "esp_attr.h"
#include "ov3660_regs.h"
static const ratio_settings_t ratio_table[] = {
// mw, mh, sx, sy, ex, ey, ox, oy, tx, ty
{ 2048, 1536, 0, 0, 2079, 1547, 16, 6, 2300, 1564 }, //4x3
{ 1920, 1280, 64, 128, 2015, 1419, 16, 6, 2172, 1436 }, //3x2
{ 2048, 1280, 0, 128, 2079, 1419, 16, 6, 2300, 1436 }, //16x10
{ 1920, 1152, 64, 192, 2015, 1355, 16, 6, 2172, 1372 }, //5x3
{ 1920, 1080, 64, 242, 2015, 1333, 16, 6, 2172, 1322 }, //16x9
{ 2048, 880, 0, 328, 2079, 1219, 16, 6, 2300, 1236 }, //21x9
{ 1920, 1536, 64, 0, 2015, 1547, 16, 6, 2172, 1564 }, //5x4
{ 1536, 1536, 256, 0, 1823, 1547, 16, 6, 2044, 1564 }, //1x1
{ 864, 1536, 592, 0, 1487, 1547, 16, 6, 2044, 1564 } //9x16
};
#define REG_DLY 0xffff
#define REGLIST_TAIL 0x0000
static const DRAM_ATTR uint16_t sensor_default_regs[][2] = {
{SYSTEM_CTROL0, 0x82}, // software reset
{REG_DLY, 10}, // delay 10ms
{0x3103, 0x13},
{SYSTEM_CTROL0, 0x42},
{0x3017, 0xff},
{0x3018, 0xff},
{DRIVE_CAPABILITY, 0xc3},
{CLOCK_POL_CONTROL, 0x21},
{0x3611, 0x01},
{0x3612, 0x2d},
{0x3032, 0x00},
{0x3614, 0x80},
{0x3618, 0x00},
{0x3619, 0x75},
{0x3622, 0x80},
{0x3623, 0x00},
{0x3624, 0x03},
{0x3630, 0x52},
{0x3632, 0x07},
{0x3633, 0xd2},
{0x3704, 0x80},
{0x3708, 0x66},
{0x3709, 0x12},
{0x370b, 0x12},
{0x3717, 0x00},
{0x371b, 0x60},
{0x371c, 0x00},
{0x3901, 0x13},
{0x3600, 0x08},
{0x3620, 0x43},
{0x3702, 0x20},
{0x3739, 0x48},
{0x3730, 0x20},
{0x370c, 0x0c},
{0x3a18, 0x00},
{0x3a19, 0xf8},
{0x3000, 0x10},
{0x3004, 0xef},
{0x6700, 0x05},
{0x6701, 0x19},
{0x6702, 0xfd},
{0x6703, 0xd1},
{0x6704, 0xff},
{0x6705, 0xff},
{0x3c01, 0x80},
{0x3c00, 0x04},
{0x3a08, 0x00}, {0x3a09, 0x62}, //50Hz Band Width Step (10bit)
{0x3a0e, 0x08}, //50Hz Max Bands in One Frame (6 bit)
{0x3a0a, 0x00}, {0x3a0b, 0x52}, //60Hz Band Width Step (10bit)
{0x3a0d, 0x09}, //60Hz Max Bands in One Frame (6 bit)
{0x3a00, 0x3a},//night mode off
{0x3a14, 0x09},
{0x3a15, 0x30},
{0x3a02, 0x09},
{0x3a03, 0x30},
{COMPRESSION_CTRL0E, 0x08},
{0x4520, 0x0b},
{0x460b, 0x37},
{0x4713, 0x02},
{0x471c, 0xd0},
{0x5086, 0x00},
{0x5002, 0x00},
{0x501f, 0x00},
{SYSTEM_CTROL0, 0x02},
{0x5180, 0xff},
{0x5181, 0xf2},
{0x5182, 0x00},
{0x5183, 0x14},
{0x5184, 0x25},
{0x5185, 0x24},
{0x5186, 0x16},
{0x5187, 0x16},
{0x5188, 0x16},
{0x5189, 0x68},
{0x518a, 0x60},
{0x518b, 0xe0},
{0x518c, 0xb2},
{0x518d, 0x42},
{0x518e, 0x35},
{0x518f, 0x56},
{0x5190, 0x56},
{0x5191, 0xf8},
{0x5192, 0x04},
{0x5193, 0x70},
{0x5194, 0xf0},
{0x5195, 0xf0},
{0x5196, 0x03},
{0x5197, 0x01},
{0x5198, 0x04},
{0x5199, 0x12},
{0x519a, 0x04},
{0x519b, 0x00},
{0x519c, 0x06},
{0x519d, 0x82},
{0x519e, 0x38},
{0x5381, 0x1d},
{0x5382, 0x60},
{0x5383, 0x03},
{0x5384, 0x0c},
{0x5385, 0x78},
{0x5386, 0x84},
{0x5387, 0x7d},
{0x5388, 0x6b},
{0x5389, 0x12},
{0x538a, 0x01},
{0x538b, 0x98},
{0x5480, 0x01},
// {0x5481, 0x05},
// {0x5482, 0x09},
// {0x5483, 0x10},
// {0x5484, 0x3a},
// {0x5485, 0x4c},
// {0x5486, 0x5a},
// {0x5487, 0x68},
// {0x5488, 0x74},
// {0x5489, 0x80},
// {0x548a, 0x8e},
// {0x548b, 0xa4},
// {0x548c, 0xb4},
// {0x548d, 0xc8},
// {0x548e, 0xde},
// {0x548f, 0xf0},
// {0x5490, 0x15},
{0x5000, 0xa7},
{0x5800, 0x0C},
{0x5801, 0x09},
{0x5802, 0x0C},
{0x5803, 0x0C},
{0x5804, 0x0D},
{0x5805, 0x17},
{0x5806, 0x06},
{0x5807, 0x05},
{0x5808, 0x04},
{0x5809, 0x06},
{0x580a, 0x09},
{0x580b, 0x0E},
{0x580c, 0x05},
{0x580d, 0x01},
{0x580e, 0x01},
{0x580f, 0x01},
{0x5810, 0x05},
{0x5811, 0x0D},
{0x5812, 0x05},
{0x5813, 0x01},
{0x5814, 0x01},
{0x5815, 0x01},
{0x5816, 0x05},
{0x5817, 0x0D},
{0x5818, 0x08},
{0x5819, 0x06},
{0x581a, 0x05},
{0x581b, 0x07},
{0x581c, 0x0B},
{0x581d, 0x0D},
{0x581e, 0x12},
{0x581f, 0x0D},
{0x5820, 0x0E},
{0x5821, 0x10},
{0x5822, 0x10},
{0x5823, 0x1E},
{0x5824, 0x53},
{0x5825, 0x15},
{0x5826, 0x05},
{0x5827, 0x14},
{0x5828, 0x54},
{0x5829, 0x25},
{0x582a, 0x33},
{0x582b, 0x33},
{0x582c, 0x34},
{0x582d, 0x16},
{0x582e, 0x24},
{0x582f, 0x41},
{0x5830, 0x50},
{0x5831, 0x42},
{0x5832, 0x15},
{0x5833, 0x25},
{0x5834, 0x34},
{0x5835, 0x33},
{0x5836, 0x24},
{0x5837, 0x26},
{0x5838, 0x54},
{0x5839, 0x25},
{0x583a, 0x15},
{0x583b, 0x25},
{0x583c, 0x53},
{0x583d, 0xCF},
{0x3a0f, 0x30},
{0x3a10, 0x28},
{0x3a1b, 0x30},
{0x3a1e, 0x28},
{0x3a11, 0x60},
{0x3a1f, 0x14},
{0x5302, 0x28},
{0x5303, 0x20},
{0x5306, 0x1c}, //de-noise offset 1
{0x5307, 0x28}, //de-noise offset 2
{0x4002, 0xc5},
{0x4003, 0x81},
{0x4005, 0x12},
{0x5688, 0x11},
{0x5689, 0x11},
{0x568a, 0x11},
{0x568b, 0x11},
{0x568c, 0x11},
{0x568d, 0x11},
{0x568e, 0x11},
{0x568f, 0x11},
{0x5580, 0x06},
{0x5588, 0x00},
{0x5583, 0x40},
{0x5584, 0x2c},
{ISP_CONTROL_01, 0x83}, // turn color matrix, awb and SDE
{REGLIST_TAIL, 0x00}, // tail
};
static const DRAM_ATTR uint16_t sensor_fmt_jpeg[][2] = {
{FORMAT_CTRL, 0x00}, // YUV422
{FORMAT_CTRL00, 0x30}, // YUYV
{0x3002, 0x00},//0x1c to 0x00 !!!
{0x3006, 0xff},//0xc3 to 0xff !!!
{0x471c, 0x50},//0xd0 to 0x50 !!!
{REGLIST_TAIL, 0x00}, // tail
};
static const DRAM_ATTR uint16_t sensor_fmt_raw[][2] = {
{FORMAT_CTRL00, 0x00}, // RAW
{REGLIST_TAIL, 0x00}
};
static const DRAM_ATTR uint16_t sensor_fmt_grayscale[][2] = {
{FORMAT_CTRL, 0x00}, // YUV422
{FORMAT_CTRL00, 0x10}, // Y8
{REGLIST_TAIL, 0x00}
};
static const DRAM_ATTR uint16_t sensor_fmt_yuv422[][2] = {
{FORMAT_CTRL, 0x00}, // YUV422
{FORMAT_CTRL00, 0x30}, // YUYV
{REGLIST_TAIL, 0x00}
};
static const DRAM_ATTR uint16_t sensor_fmt_rgb565[][2] = {
{FORMAT_CTRL, 0x01}, // RGB
{FORMAT_CTRL00, 0x61}, // RGB565 (BGR)
{REGLIST_TAIL, 0x00}
};
static const DRAM_ATTR uint8_t sensor_saturation_levels[9][11] = {
{0x1d, 0x60, 0x03, 0x07, 0x48, 0x4f, 0x4b, 0x40, 0x0b, 0x01, 0x98},//-4
{0x1d, 0x60, 0x03, 0x08, 0x54, 0x5c, 0x58, 0x4b, 0x0d, 0x01, 0x98},//-3
{0x1d, 0x60, 0x03, 0x0a, 0x60, 0x6a, 0x64, 0x56, 0x0e, 0x01, 0x98},//-2
{0x1d, 0x60, 0x03, 0x0b, 0x6c, 0x77, 0x70, 0x60, 0x10, 0x01, 0x98},//-1
{0x1d, 0x60, 0x03, 0x0c, 0x78, 0x84, 0x7d, 0x6b, 0x12, 0x01, 0x98},//0
{0x1d, 0x60, 0x03, 0x0d, 0x84, 0x91, 0x8a, 0x76, 0x14, 0x01, 0x98},//+1
{0x1d, 0x60, 0x03, 0x0e, 0x90, 0x9e, 0x96, 0x80, 0x16, 0x01, 0x98},//+2
{0x1d, 0x60, 0x03, 0x10, 0x9c, 0xac, 0xa2, 0x8b, 0x17, 0x01, 0x98},//+3
{0x1d, 0x60, 0x03, 0x11, 0xa8, 0xb9, 0xaf, 0x96, 0x19, 0x01, 0x98},//+4
};
static const DRAM_ATTR uint8_t sensor_special_effects[7][4] = {
{0x06, 0x40, 0x2c, 0x08},//Normal
{0x46, 0x40, 0x28, 0x08},//Negative
{0x1e, 0x80, 0x80, 0x08},//Grayscale
{0x1e, 0x80, 0xc0, 0x08},//Red Tint
{0x1e, 0x60, 0x60, 0x08},//Green Tint
{0x1e, 0xa0, 0x40, 0x08},//Blue Tint
{0x1e, 0x40, 0xa0, 0x08},//Sepia
};
#endif

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esp32-cam/ov5640.c
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esp32-cam/ov5640.h
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#ifndef __OV5640_H__
#define __OV5640_H__
#include "sensor.h"
int ov5640_init(sensor_t *sensor);
#endif // __OV5640_H__

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esp32-cam/ov5640_regs.h
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/*
* OV5640 register definitions.
*/
#ifndef __OV5640_REG_REGS_H__
#define __OV5640_REG_REGS_H__
/* system control registers */
#define SYSTEM_CTROL0 0x3008 // Bit[7]: Software reset
// Bit[6]: Software power down
// Bit[5]: Reserved
// Bit[4]: SRB clock SYNC enable
// Bit[3]: Isolation suspend select
// Bit[2:0]: Not used
#define DRIVE_CAPABILITY 0x302c // Bit[7:6]:
// 00: 1x
// 01: 2x
// 10: 3x
// 11: 4x
#define SC_PLLS_CTRL0 0x303a // Bit[7]: PLLS bypass
#define SC_PLLS_CTRL1 0x303b // Bit[4:0]: PLLS multiplier
#define SC_PLLS_CTRL2 0x303c // Bit[6:4]: PLLS charge pump control
// Bit[3:0]: PLLS system divider
#define SC_PLLS_CTRL3 0x303d // Bit[5:4]: PLLS pre-divider
// 00: 1
// 01: 1.5
// 10: 2
// 11: 3
// Bit[2]: PLLS root-divider - 1
// Bit[1:0]: PLLS seld5
// 00: 1
// 01: 1
// 10: 2
// 11: 2.5
/* AEC/AGC control functions */
#define AEC_PK_MANUAL 0x3503 // AEC Manual Mode Control
// Bit[7:6]: Reserved
// Bit[5]: Gain delay option
// Valid when 0x3503[4]=1’b0
// 0: Delay one frame latch
// 1: One frame latch
// Bit[4:2]: Reserved
// Bit[1]: AGC manual
// 0: Auto enable
// 1: Manual enable
// Bit[0]: AEC manual
// 0: Auto enable
// 1: Manual enable
//gain = {0x350A[1:0], 0x350B[7:0]} / 16
#define X_ADDR_ST_H 0x3800 //Bit[3:0]: X address start[11:8]
#define X_ADDR_ST_L 0x3801 //Bit[7:0]: X address start[7:0]
#define Y_ADDR_ST_H 0x3802 //Bit[2:0]: Y address start[10:8]
#define Y_ADDR_ST_L 0x3803 //Bit[7:0]: Y address start[7:0]
#define X_ADDR_END_H 0x3804 //Bit[3:0]: X address end[11:8]
#define X_ADDR_END_L 0x3805 //Bit[7:0]:
#define Y_ADDR_END_H 0x3806 //Bit[2:0]: Y address end[10:8]
#define Y_ADDR_END_L 0x3807 //Bit[7:0]:
// Size after scaling
#define X_OUTPUT_SIZE_H 0x3808 //Bit[3:0]: DVP output horizontal width[11:8]
#define X_OUTPUT_SIZE_L 0x3809 //Bit[7:0]:
#define Y_OUTPUT_SIZE_H 0x380a //Bit[2:0]: DVP output vertical height[10:8]
#define Y_OUTPUT_SIZE_L 0x380b //Bit[7:0]:
#define X_TOTAL_SIZE_H 0x380c //Bit[3:0]: Total horizontal size[11:8]
#define X_TOTAL_SIZE_L 0x380d //Bit[7:0]:
#define Y_TOTAL_SIZE_H 0x380e //Bit[7:0]: Total vertical size[15:8]
#define Y_TOTAL_SIZE_L 0x380f //Bit[7:0]:
#define X_OFFSET_H 0x3810 //Bit[3:0]: ISP horizontal offset[11:8]
#define X_OFFSET_L 0x3811 //Bit[7:0]:
#define Y_OFFSET_H 0x3812 //Bit[2:0]: ISP vertical offset[10:8]
#define Y_OFFSET_L 0x3813 //Bit[7:0]:
#define X_INCREMENT 0x3814 //Bit[7:4]: Horizontal odd subsample increment
//Bit[3:0]: Horizontal even subsample increment
#define Y_INCREMENT 0x3815 //Bit[7:4]: Vertical odd subsample increment
//Bit[3:0]: Vertical even subsample increment
// Size before scaling
//#define X_INPUT_SIZE (X_ADDR_END - X_ADDR_ST + 1 - (2 * X_OFFSET))
//#define Y_INPUT_SIZE (Y_ADDR_END - Y_ADDR_ST + 1 - (2 * Y_OFFSET))
/* mirror and flip registers */
#define TIMING_TC_REG20 0x3820 // Timing Control Register
// Bit[2:1]: Vertical flip enable
// 00: Normal
// 11: Vertical flip
// Bit[0]: Vertical binning enable
#define TIMING_TC_REG21 0x3821 // Timing Control Register
// Bit[5]: Compression Enable
// Bit[2:1]: Horizontal mirror enable
// 00: Normal
// 11: Horizontal mirror
// Bit[0]: Horizontal binning enable
#define PCLK_RATIO 0x3824 // Bit[4:0]: PCLK ratio manual
/* frame control registers */
#define FRAME_CTRL01 0x4201 // Control Passed Frame Number When both ON and OFF number set to 0x00,frame control is in bypass mode
// Bit[7:4]: Not used
// Bit[3:0]: Frame ON number
#define FRAME_CTRL02 0x4202 // Control Masked Frame Number When both ON and OFF number set to 0x00,frame control is in bypass mode
// Bit[7:4]: Not used
// BIT[3:0]: Frame OFF number
/* format control registers */
#define FORMAT_CTRL00 0x4300
#define CLOCK_POL_CONTROL 0x4740// Bit[5]: PCLK polarity 0: active low
// 1: active high
// Bit[3]: Gate PCLK under VSYNC
// Bit[2]: Gate PCLK under HREF
// Bit[1]: HREF polarity
// 0: active low
// 1: active high
// Bit[0] VSYNC polarity
// 0: active low
// 1: active high
#define ISP_CONTROL_01 0x5001 // Bit[5]: Scale enable
// 0: Disable
// 1: Enable
/* output format control registers */
#define FORMAT_CTRL 0x501F // Format select
// Bit[2:0]:
// 000: YUV422
// 001: RGB
// 010: Dither
// 011: RAW after DPC
// 101: RAW after CIP
/* ISP top control registers */
#define PRE_ISP_TEST_SETTING_1 0x503D // Bit[7]: Test enable
// 0: Test disable
// 1: Color bar enable
// Bit[6]: Rolling
// Bit[5]: Transparent
// Bit[4]: Square black and white
// Bit[3:2]: Color bar style
// 00: Standard 8 color bar
// 01: Gradual change at vertical mode 1
// 10: Gradual change at horizontal
// 11: Gradual change at vertical mode 2
// Bit[1:0]: Test select
// 00: Color bar
// 01: Random data
// 10: Square data
// 11: Black image
//exposure = {0x3500[3:0], 0x3501[7:0], 0x3502[7:0]} / 16 × tROW
#define SCALE_CTRL_1 0x5601 // Bit[6:4]: HDIV RW
// DCW scale times
// 000: DCW 1 time
// 001: DCW 2 times
// 010: DCW 4 times
// 100: DCW 8 times
// 101: DCW 16 times
// Others: DCW 16 times
// Bit[2:0]: VDIV RW
// DCW scale times
// 000: DCW 1 time
// 001: DCW 2 times
// 010: DCW 4 times
// 100: DCW 8 times
// 101: DCW 16 times
// Others: DCW 16 times
#define SCALE_CTRL_2 0x5602 // X_SCALE High Bits
#define SCALE_CTRL_3 0x5603 // X_SCALE Low Bits
#define SCALE_CTRL_4 0x5604 // Y_SCALE High Bits
#define SCALE_CTRL_5 0x5605 // Y_SCALE Low Bits
#define SCALE_CTRL_6 0x5606 // Bit[3:0]: V Offset
#define VFIFO_CTRL0C 0x460C // Bit[1]: PCLK manual enable
// 0: Auto
// 1: Manual by PCLK_RATIO
#define VFIFO_X_SIZE_H 0x4602
#define VFIFO_X_SIZE_L 0x4603
#define VFIFO_Y_SIZE_H 0x4604
#define VFIFO_Y_SIZE_L 0x4605
#define COMPRESSION_CTRL00 0x4400 //
#define COMPRESSION_CTRL01 0x4401 //
#define COMPRESSION_CTRL02 0x4402 //
#define COMPRESSION_CTRL03 0x4403 //
#define COMPRESSION_CTRL04 0x4404 //
#define COMPRESSION_CTRL05 0x4405 //
#define COMPRESSION_CTRL06 0x4406 //
#define COMPRESSION_CTRL07 0x4407 // Bit[5:0]: QS
#define COMPRESSION_ISI_CTRL 0x4408 //
#define COMPRESSION_CTRL09 0x4409 //
#define COMPRESSION_CTRL0a 0x440a //
#define COMPRESSION_CTRL0b 0x440b //
#define COMPRESSION_CTRL0c 0x440c //
#define COMPRESSION_CTRL0d 0x440d //
#define COMPRESSION_CTRL0E 0x440e //
/**
* @brief register value
*/
#define TEST_COLOR_BAR 0xC0 /* Enable Color Bar roling Test */
#define AEC_PK_MANUAL_AGC_MANUALEN 0x02 /* Enable AGC Manual enable */
#define AEC_PK_MANUAL_AEC_MANUALEN 0x01 /* Enable AEC Manual enable */
#define TIMING_TC_REG20_VFLIP 0x06 /* Vertical flip enable */
#define TIMING_TC_REG21_HMIRROR 0x06 /* Horizontal mirror enable */
#endif // __OV3660_REG_REGS_H__

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esp32-cam/ov5640_settings.h
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#ifndef _OV5640_SETTINGS_H_
#define _OV5640_SETTINGS_H_
#include <stdint.h>
#include <stdbool.h>
#include "esp_attr.h"
#include "ov5640_regs.h"
static const ratio_settings_t ratio_table[] = {
// mw, mh, sx, sy, ex, ey, ox, oy, tx, ty
{ 2560, 1920, 0, 0, 2623, 1951, 32, 16, 2844, 1968 }, //4x3
{ 2560, 1704, 0, 110, 2623, 1843, 32, 16, 2844, 1752 }, //3x2
{ 2560, 1600, 0, 160, 2623, 1791, 32, 16, 2844, 1648 }, //16x10
{ 2560, 1536, 0, 192, 2623, 1759, 32, 16, 2844, 1584 }, //5x3
{ 2560, 1440, 0, 240, 2623, 1711, 32, 16, 2844, 1488 }, //16x9
{ 2560, 1080, 0, 420, 2623, 1531, 32, 16, 2844, 1128 }, //21x9
{ 2400, 1920, 80, 0, 2543, 1951, 32, 16, 2684, 1968 }, //5x4
{ 1920, 1920, 320, 0, 2543, 1951, 32, 16, 2684, 1968 }, //1x1
{ 1088, 1920, 736, 0, 1887, 1951, 32, 16, 1884, 1968 } //9x16
};
#define REG_DLY 0xffff
#define REGLIST_TAIL 0x0000
static const DRAM_ATTR uint16_t sensor_default_regs[][2] = {
{SYSTEM_CTROL0, 0x82}, // software reset
{REG_DLY, 10}, // delay 10ms
{SYSTEM_CTROL0, 0x42}, // power down
//enable pll
{0x3103, 0x13},
//io direction
{0x3017, 0xff},
{0x3018, 0xff},
{DRIVE_CAPABILITY, 0xc3},
{CLOCK_POL_CONTROL, 0x21},
{0x4713, 0x02},//jpg mode select
{ISP_CONTROL_01, 0x83}, // turn color matrix, awb and SDE
//sys reset
{0x3000, 0x00},
{0x3002, 0x1c},
//clock enable
{0x3004, 0xff},
{0x3006, 0xc3},
//isp control
{0x5000, 0xa7},
{ISP_CONTROL_01, 0xa3},//+scaling?
{0x5003, 0x08},//special_effect
//unknown
{0x370c, 0x02},//!!IMPORTANT
{0x3634, 0x40},//!!IMPORTANT
//AEC/AGC
{0x3a02, 0x03},
{0x3a03, 0xd8},
{0x3a08, 0x01},
{0x3a09, 0x27},
{0x3a0a, 0x00},
{0x3a0b, 0xf6},
{0x3a0d, 0x04},
{0x3a0e, 0x03},
{0x3a0f, 0x30},//ae_level
{0x3a10, 0x28},//ae_level
{0x3a11, 0x60},//ae_level
{0x3a13, 0x43},
{0x3a14, 0x03},
{0x3a15, 0xd8},
{0x3a18, 0x00},//gainceiling
{0x3a19, 0xf8},//gainceiling
{0x3a1b, 0x30},//ae_level
{0x3a1e, 0x26},//ae_level
{0x3a1f, 0x14},//ae_level
//vcm debug
{0x3600, 0x08},
{0x3601, 0x33},
//50/60Hz
{0x3c01, 0xa4},
{0x3c04, 0x28},
{0x3c05, 0x98},
{0x3c06, 0x00},
{0x3c07, 0x08},
{0x3c08, 0x00},
{0x3c09, 0x1c},
{0x3c0a, 0x9c},
{0x3c0b, 0x40},
{0x460c, 0x22},//disable jpeg footer
//BLC
{0x4001, 0x02},
{0x4004, 0x02},
//AWB
{0x5180, 0xff},
{0x5181, 0xf2},
{0x5182, 0x00},
{0x5183, 0x14},
{0x5184, 0x25},
{0x5185, 0x24},
{0x5186, 0x09},
{0x5187, 0x09},
{0x5188, 0x09},
{0x5189, 0x75},
{0x518a, 0x54},
{0x518b, 0xe0},
{0x518c, 0xb2},
{0x518d, 0x42},
{0x518e, 0x3d},
{0x518f, 0x56},
{0x5190, 0x46},
{0x5191, 0xf8},
{0x5192, 0x04},
{0x5193, 0x70},
{0x5194, 0xf0},
{0x5195, 0xf0},
{0x5196, 0x03},
{0x5197, 0x01},
{0x5198, 0x04},
{0x5199, 0x12},
{0x519a, 0x04},
{0x519b, 0x00},
{0x519c, 0x06},
{0x519d, 0x82},
{0x519e, 0x38},
//color matrix (Saturation)
{0x5381, 0x1e},
{0x5382, 0x5b},
{0x5383, 0x08},
{0x5384, 0x0a},
{0x5385, 0x7e},
{0x5386, 0x88},
{0x5387, 0x7c},
{0x5388, 0x6c},
{0x5389, 0x10},
{0x538a, 0x01},
{0x538b, 0x98},
//CIP control (Sharpness)
{0x5300, 0x10},//sharpness
{0x5301, 0x10},//sharpness
{0x5302, 0x18},//sharpness
{0x5303, 0x19},//sharpness
{0x5304, 0x10},
{0x5305, 0x10},
{0x5306, 0x08},//denoise
{0x5307, 0x16},
{0x5308, 0x40},
{0x5309, 0x10},//sharpness
{0x530a, 0x10},//sharpness
{0x530b, 0x04},//sharpness
{0x530c, 0x06},//sharpness
//GAMMA
{0x5480, 0x01},
{0x5481, 0x00},
{0x5482, 0x1e},
{0x5483, 0x3b},
{0x5484, 0x58},
{0x5485, 0x66},
{0x5486, 0x71},
{0x5487, 0x7d},
{0x5488, 0x83},
{0x5489, 0x8f},
{0x548a, 0x98},
{0x548b, 0xa6},
{0x548c, 0xb8},
{0x548d, 0xca},
{0x548e, 0xd7},
{0x548f, 0xe3},
{0x5490, 0x1d},
//Special Digital Effects (SDE) (UV adjust)
{0x5580, 0x06},//enable brightness and contrast
{0x5583, 0x40},//special_effect
{0x5584, 0x10},//special_effect
{0x5586, 0x20},//contrast
{0x5587, 0x00},//brightness
{0x5588, 0x00},//brightness
{0x5589, 0x10},
{0x558a, 0x00},
{0x558b, 0xf8},
{0x501d, 0x40},// enable manual offset of contrast
//power on
{0x3008, 0x02},
//50Hz
{0x3c00, 0x04},
{REG_DLY, 300},
{REGLIST_TAIL, 0x00}, // tail
};
static const DRAM_ATTR uint16_t sensor_fmt_jpeg[][2] = {
{FORMAT_CTRL, 0x00}, // YUV422
{FORMAT_CTRL00, 0x30}, // YUYV
{0x3002, 0x00},//0x1c to 0x00 !!!
{0x3006, 0xff},//0xc3 to 0xff !!!
{0x471c, 0x50},//0xd0 to 0x50 !!!
{REGLIST_TAIL, 0x00}, // tail
};
static const DRAM_ATTR uint16_t sensor_fmt_raw[][2] = {
{FORMAT_CTRL, 0x03}, // RAW (DPC)
{FORMAT_CTRL00, 0x00}, // RAW
{REGLIST_TAIL, 0x00}
};
static const DRAM_ATTR uint16_t sensor_fmt_grayscale[][2] = {
{FORMAT_CTRL, 0x00}, // YUV422
{FORMAT_CTRL00, 0x10}, // Y8
{REGLIST_TAIL, 0x00}
};
static const DRAM_ATTR uint16_t sensor_fmt_yuv422[][2] = {
{FORMAT_CTRL, 0x00}, // YUV422
{FORMAT_CTRL00, 0x30}, // YUYV
{REGLIST_TAIL, 0x00}
};
static const DRAM_ATTR uint16_t sensor_fmt_rgb565[][2] = {
{FORMAT_CTRL, 0x01}, // RGB
{FORMAT_CTRL00, 0x61}, // RGB565 (BGR)
{REGLIST_TAIL, 0x00}
};
static const DRAM_ATTR uint8_t sensor_saturation_levels[9][11] = {
{0x1d, 0x60, 0x03, 0x07, 0x48, 0x4f, 0x4b, 0x40, 0x0b, 0x01, 0x98},//-4
{0x1d, 0x60, 0x03, 0x08, 0x54, 0x5c, 0x58, 0x4b, 0x0d, 0x01, 0x98},//-3
{0x1d, 0x60, 0x03, 0x0a, 0x60, 0x6a, 0x64, 0x56, 0x0e, 0x01, 0x98},//-2
{0x1d, 0x60, 0x03, 0x0b, 0x6c, 0x77, 0x70, 0x60, 0x10, 0x01, 0x98},//-1
{0x1d, 0x60, 0x03, 0x0c, 0x78, 0x84, 0x7d, 0x6b, 0x12, 0x01, 0x98},//0
{0x1d, 0x60, 0x03, 0x0d, 0x84, 0x91, 0x8a, 0x76, 0x14, 0x01, 0x98},//+1
{0x1d, 0x60, 0x03, 0x0e, 0x90, 0x9e, 0x96, 0x80, 0x16, 0x01, 0x98},//+2
{0x1d, 0x60, 0x03, 0x10, 0x9c, 0xac, 0xa2, 0x8b, 0x17, 0x01, 0x98},//+3
{0x1d, 0x60, 0x03, 0x11, 0xa8, 0xb9, 0xaf, 0x96, 0x19, 0x01, 0x98},//+4
};
static const DRAM_ATTR uint8_t sensor_special_effects[7][4] = {
{0x06, 0x40, 0x2c, 0x08},//Normal
{0x46, 0x40, 0x28, 0x08},//Negative
{0x1e, 0x80, 0x80, 0x08},//Grayscale
{0x1e, 0x80, 0xc0, 0x08},//Red Tint
{0x1e, 0x60, 0x60, 0x08},//Green Tint
{0x1e, 0xa0, 0x40, 0x08},//Blue Tint
{0x1e, 0x40, 0xa0, 0x08},//Sepia
};
static const DRAM_ATTR uint16_t sensor_regs_gamma0[][2] = {
{0x5480, 0x01},
{0x5481, 0x08},
{0x5482, 0x14},
{0x5483, 0x28},
{0x5484, 0x51},
{0x5485, 0x65},
{0x5486, 0x71},
{0x5487, 0x7d},
{0x5488, 0x87},
{0x5489, 0x91},
{0x548a, 0x9a},
{0x548b, 0xaa},
{0x548c, 0xb8},
{0x548d, 0xcd},
{0x548e, 0xdd},
{0x548f, 0xea},
{0x5490, 0x1d}
};
static const DRAM_ATTR uint16_t sensor_regs_gamma1[][2] = {
{0x5480, 0x1},
{0x5481, 0x0},
{0x5482, 0x1e},
{0x5483, 0x3b},
{0x5484, 0x58},
{0x5485, 0x66},
{0x5486, 0x71},
{0x5487, 0x7d},
{0x5488, 0x83},
{0x5489, 0x8f},
{0x548a, 0x98},
{0x548b, 0xa6},
{0x548c, 0xb8},
{0x548d, 0xca},
{0x548e, 0xd7},
{0x548f, 0xe3},
{0x5490, 0x1d}
};
static const DRAM_ATTR uint16_t sensor_regs_awb0[][2] = {
{0x5180, 0xff},
{0x5181, 0xf2},
{0x5182, 0x00},
{0x5183, 0x14},
{0x5184, 0x25},
{0x5185, 0x24},
{0x5186, 0x09},
{0x5187, 0x09},
{0x5188, 0x09},
{0x5189, 0x75},
{0x518a, 0x54},
{0x518b, 0xe0},
{0x518c, 0xb2},
{0x518d, 0x42},
{0x518e, 0x3d},
{0x518f, 0x56},
{0x5190, 0x46},
{0x5191, 0xf8},
{0x5192, 0x04},
{0x5193, 0x70},
{0x5194, 0xf0},
{0x5195, 0xf0},
{0x5196, 0x03},
{0x5197, 0x01},
{0x5198, 0x04},
{0x5199, 0x12},
{0x519a, 0x04},
{0x519b, 0x00},
{0x519c, 0x06},
{0x519d, 0x82},
{0x519e, 0x38}
};
#endif

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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* OV7725 driver.
*
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "sccb.h"
#include "ov7725.h"
#include "ov7725_regs.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#if defined(ARDUINO_ARCH_ESP32) && defined(CONFIG_ARDUHAL_ESP_LOG)
#include "esp32-hal-log.h"
#else
#include "esp_log.h"
static const char* TAG = "ov7725";
#endif
static const uint8_t default_regs[][2] = {
{COM3, COM3_SWAP_YUV},
{COM7, COM7_RES_QVGA | COM7_FMT_YUV},
{COM4, 0x01 | 0x00}, /* bypass PLL (0x00:off, 0x40:4x, 0x80:6x, 0xC0:8x) */
{CLKRC, 0x80 | 0x03}, /* Res/Bypass pre-scalar (0x40:bypass, 0x00-0x3F:prescaler PCLK=XCLK/(prescaler + 1)/2 ) */
// QVGA Window Size
{HSTART, 0x3F},
{HSIZE, 0x50},
{VSTART, 0x03},
{VSIZE, 0x78},
{HREF, 0x00},
// Scale down to QVGA Resolution
{HOUTSIZE, 0x50},
{VOUTSIZE, 0x78},
{EXHCH, 0x00},
{COM12, 0x03},
{TGT_B, 0x7F},
{FIXGAIN, 0x09},
{AWB_CTRL0, 0xE0},
{DSP_CTRL1, 0xFF},
{DSP_CTRL2, DSP_CTRL2_VDCW_EN | DSP_CTRL2_HDCW_EN | DSP_CTRL2_HZOOM_EN | DSP_CTRL2_VZOOM_EN},
{DSP_CTRL3, 0x00},
{DSP_CTRL4, 0x00},
{DSPAUTO, 0xFF},
{COM8, 0xF0},
{COM6, 0xC5},
{COM9, 0x11},
{COM10, COM10_VSYNC_NEG | COM10_PCLK_MASK}, //Invert VSYNC and MASK PCLK
{BDBASE, 0x7F},
{DBSTEP, 0x03},
{AEW, 0x96},
{AEB, 0x64},
{VPT, 0xA1},
{EXHCL, 0x00},
{AWB_CTRL3, 0xAA},
{COM8, 0xFF},
//Gamma
{GAM1, 0x0C},
{GAM2, 0x16},
{GAM3, 0x2A},
{GAM4, 0x4E},
{GAM5, 0x61},
{GAM6, 0x6F},
{GAM7, 0x7B},
{GAM8, 0x86},
{GAM9, 0x8E},
{GAM10, 0x97},
{GAM11, 0xA4},
{GAM12, 0xAF},
{GAM13, 0xC5},
{GAM14, 0xD7},
{GAM15, 0xE8},
{SLOP, 0x20},
{EDGE1, 0x05},
{EDGE2, 0x03},
{EDGE3, 0x00},
{DNSOFF, 0x01},
{MTX1, 0xB0},
{MTX2, 0x9D},
{MTX3, 0x13},
{MTX4, 0x16},
{MTX5, 0x7B},
{MTX6, 0x91},
{MTX_CTRL, 0x1E},
{BRIGHTNESS, 0x08},
{CONTRAST, 0x30},
{UVADJ0, 0x81},
{SDE, (SDE_CONT_BRIGHT_EN | SDE_SATURATION_EN)},
// For 30 fps/60Hz
{DM_LNL, 0x00},
{DM_LNH, 0x00},
{BDBASE, 0x7F},
{DBSTEP, 0x03},
// Lens Correction, should be tuned with real camera module
{LC_RADI, 0x10},
{LC_COEF, 0x10},
{LC_COEFB, 0x14},
{LC_COEFR, 0x17},
{LC_CTR, 0x05},
{COM5, 0xF5}, //0x65
{0x00, 0x00},
};
static int reset(sensor_t *sensor)
{
int i=0;
const uint8_t (*regs)[2];
// Reset all registers
SCCB_Write(sensor->slv_addr, COM7, COM7_RESET);
// Delay 10 ms
vTaskDelay(10 / portTICK_PERIOD_MS);
// Write default regsiters
for (i=0, regs = default_regs; regs[i][0]; i++) {
SCCB_Write(sensor->slv_addr, regs[i][0], regs[i][1]);
}
// Delay
vTaskDelay(30 / portTICK_PERIOD_MS);
return 0;
}
static int set_pixformat(sensor_t *sensor, pixformat_t pixformat)
{
int ret=0;
sensor->pixformat = pixformat;
// Read register COM7
uint8_t reg = SCCB_Read(sensor->slv_addr, COM7);
switch (pixformat) {
case PIXFORMAT_RGB565:
reg = COM7_SET_RGB(reg, COM7_FMT_RGB565);
break;
case PIXFORMAT_YUV422:
case PIXFORMAT_GRAYSCALE:
reg = COM7_SET_FMT(reg, COM7_FMT_YUV);
break;
default:
return -1;
}
// Write back register COM7
ret = SCCB_Write(sensor->slv_addr, COM7, reg);
// Delay
vTaskDelay(30 / portTICK_PERIOD_MS);
return ret;
}
static int set_framesize(sensor_t *sensor, framesize_t framesize)
{
int ret=0;
uint16_t w = resolution[framesize].width;
uint16_t h = resolution[framesize].height;
uint8_t reg = SCCB_Read(sensor->slv_addr, COM7);
sensor->status.framesize = framesize;
// Write MSBs
ret |= SCCB_Write(sensor->slv_addr, HOUTSIZE, w>>2);
ret |= SCCB_Write(sensor->slv_addr, VOUTSIZE, h>>1);
ret |= SCCB_Write(sensor->slv_addr, HSIZE, w>>2);
ret |= SCCB_Write(sensor->slv_addr, VSIZE, h>>1);
// Write LSBs
ret |= SCCB_Write(sensor->slv_addr, HREF, ((w&0x3) | ((h&0x1) << 2)));
if (framesize < FRAMESIZE_VGA) {
// Enable auto-scaling/zooming factors
ret |= SCCB_Write(sensor->slv_addr, DSPAUTO, 0xFF);
ret |= SCCB_Write(sensor->slv_addr, HSTART, 0x3F);
ret |= SCCB_Write(sensor->slv_addr, VSTART, 0x03);
ret |= SCCB_Write(sensor->slv_addr, COM7, reg | COM7_RES_QVGA);
ret |= SCCB_Write(sensor->slv_addr, CLKRC, 0x80 | 0x01);
} else {
// Disable auto-scaling/zooming factors
ret |= SCCB_Write(sensor->slv_addr, DSPAUTO, 0xF3);
// Clear auto-scaling/zooming factors
ret |= SCCB_Write(sensor->slv_addr, SCAL0, 0x00);
ret |= SCCB_Write(sensor->slv_addr, SCAL1, 0x00);
ret |= SCCB_Write(sensor->slv_addr, SCAL2, 0x00);
ret |= SCCB_Write(sensor->slv_addr, HSTART, 0x23);
ret |= SCCB_Write(sensor->slv_addr, VSTART, 0x07);
ret |= SCCB_Write(sensor->slv_addr, COM7, reg & ~COM7_RES_QVGA);
ret |= SCCB_Write(sensor->slv_addr, CLKRC, 0x80 | 0x03);
}
// Delay
vTaskDelay(30 / portTICK_PERIOD_MS);
return ret;
}
static int set_colorbar(sensor_t *sensor, int enable)
{
int ret=0;
uint8_t reg;
sensor->status.colorbar = enable;
// Read reg COM3
reg = SCCB_Read(sensor->slv_addr, COM3);
// Enable colorbar test pattern output
reg = COM3_SET_CBAR(reg, enable);
// Write back COM3
ret |= SCCB_Write(sensor->slv_addr, COM3, reg);
// Read reg DSP_CTRL3
reg = SCCB_Read(sensor->slv_addr, DSP_CTRL3);
// Enable DSP colorbar output
reg = DSP_CTRL3_SET_CBAR(reg, enable);
// Write back DSP_CTRL3
ret |= SCCB_Write(sensor->slv_addr, DSP_CTRL3, reg);
return ret;
}
static int set_whitebal(sensor_t *sensor, int enable)
{
// Read register COM8
uint8_t reg = SCCB_Read(sensor->slv_addr, COM8);
sensor->status.awb = enable;
// Set white bal on/off
reg = COM8_SET_AWB(reg, enable);
// Write back register COM8
return SCCB_Write(sensor->slv_addr, COM8, reg);
}
static int set_gain_ctrl(sensor_t *sensor, int enable)
{
sensor->status.agc = enable;
// Read register COM8
uint8_t reg = SCCB_Read(sensor->slv_addr, COM8);
// Set white bal on/off
reg = COM8_SET_AGC(reg, enable);
// Write back register COM8
return SCCB_Write(sensor->slv_addr, COM8, reg);
}
static int set_exposure_ctrl(sensor_t *sensor, int enable)
{
sensor->status.aec = enable;
// Read register COM8
uint8_t reg = SCCB_Read(sensor->slv_addr, COM8);
// Set white bal on/off
reg = COM8_SET_AEC(reg, enable);
// Write back register COM8
return SCCB_Write(sensor->slv_addr, COM8, reg);
}
static int set_hmirror(sensor_t *sensor, int enable)
{
sensor->status.hmirror = enable;
// Read register COM3
uint8_t reg = SCCB_Read(sensor->slv_addr, COM3);
// Set mirror on/off
reg = COM3_SET_MIRROR(reg, enable);
// Write back register COM3
return SCCB_Write(sensor->slv_addr, COM3, reg);
}
static int set_vflip(sensor_t *sensor, int enable)
{
sensor->status.vflip = enable;
// Read register COM3
uint8_t reg = SCCB_Read(sensor->slv_addr, COM3);
// Set mirror on/off
reg = COM3_SET_FLIP(reg, enable);
// Write back register COM3
return SCCB_Write(sensor->slv_addr, COM3, reg);
}
static int init_status(sensor_t *sensor)
{
sensor->status.awb = 0;//get_reg_bits(sensor, BANK_DSP, CTRL1, 3, 1);
sensor->status.aec = 0;
sensor->status.agc = 0;
sensor->status.hmirror = 0;
sensor->status.vflip = 0;
sensor->status.colorbar = 0;
return 0;
}
static int set_dummy(sensor_t *sensor, int val){ return -1; }
static int set_gainceiling_dummy(sensor_t *sensor, gainceiling_t val){ return -1; }
int ov7725_init(sensor_t *sensor)
{
// Set function pointers
sensor->reset = reset;
sensor->init_status = init_status;
sensor->set_pixformat = set_pixformat;
sensor->set_framesize = set_framesize;
sensor->set_colorbar = set_colorbar;
sensor->set_whitebal = set_whitebal;
sensor->set_gain_ctrl = set_gain_ctrl;
sensor->set_exposure_ctrl = set_exposure_ctrl;
sensor->set_hmirror = set_hmirror;
sensor->set_vflip = set_vflip;
//not supported
sensor->set_brightness= set_dummy;
sensor->set_saturation= set_dummy;
sensor->set_quality = set_dummy;
sensor->set_gainceiling = set_gainceiling_dummy;
sensor->set_gain_ctrl = set_dummy;
sensor->set_exposure_ctrl = set_dummy;
sensor->set_hmirror = set_dummy;
sensor->set_vflip = set_dummy;
sensor->set_whitebal = set_dummy;
sensor->set_aec2 = set_dummy;
sensor->set_aec_value = set_dummy;
sensor->set_special_effect = set_dummy;
sensor->set_wb_mode = set_dummy;
sensor->set_ae_level = set_dummy;
sensor->set_dcw = set_dummy;
sensor->set_bpc = set_dummy;
sensor->set_wpc = set_dummy;
sensor->set_awb_gain = set_dummy;
sensor->set_agc_gain = set_dummy;
sensor->set_raw_gma = set_dummy;
sensor->set_lenc = set_dummy;
sensor->set_sharpness = set_dummy;
sensor->set_denoise = set_dummy;
// Retrieve sensor's signature
sensor->id.MIDH = SCCB_Read(sensor->slv_addr, REG_MIDH);
sensor->id.MIDL = SCCB_Read(sensor->slv_addr, REG_MIDL);
sensor->id.PID = SCCB_Read(sensor->slv_addr, REG_PID);
sensor->id.VER = SCCB_Read(sensor->slv_addr, REG_VER);
ESP_LOGD(TAG, "OV7725 Attached");
return 0;
}

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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* OV7725 driver.
*
*/
#ifndef __OV7725_H__
#define __OV7725_H__
#include "sensor.h"
int ov7725_init(sensor_t *sensor);
#endif // __OV7725_H__

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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* OV2640 register definitions.
*/
#ifndef __REG_REGS_H__
#define __REG_REGS_H__
#define GAIN 0x00 /* AGC – Gain control gain setting */
#define BLUE 0x01 /* AWB – Blue channel gain setting */
#define RED 0x02 /* AWB – Red channel gain setting */
#define GREEN 0x03 /* AWB – Green channel gain setting */
#define BAVG 0x05 /* U/B Average Level */
#define GAVG 0x06 /* Y/Gb Average Level */
#define RAVG 0x07 /* V/R Average Level */
#define AECH 0x08 /* Exposure Value – AEC MSBs */
#define COM2 0x09 /* Common Control 2 */
#define COM2_SOFT_SLEEP 0x10 /* Soft sleep mode */
#define COM2_OUT_DRIVE_1x 0x00 /* Output drive capability 1x */
#define COM2_OUT_DRIVE_2x 0x01 /* Output drive capability 2x */
#define COM2_OUT_DRIVE_3x 0x02 /* Output drive capability 3x */
#define COM2_OUT_DRIVE_4x 0x03 /* Output drive capability 4x */
#define REG_PID 0x0A /* Product ID Number MSB */
#define REG_VER 0x0B /* Product ID Number LSB */
#define COM3 0x0C /* Common Control 3 */
#define COM3_VFLIP 0x80 /* Vertical flip image ON/OFF selection */
#define COM3_MIRROR 0x40 /* Horizontal mirror image ON/OFF selection */
#define COM3_SWAP_BR 0x20 /* Swap B/R output sequence in RGB output mode */
#define COM3_SWAP_YUV 0x10 /* Swap Y/UV output sequence in YUV output mode */
#define COM3_SWAP_MSB 0x08 /* Swap output MSB/LSB */
#define COM3_TRI_CLOCK 0x04 /* Tri-state option for output clock at power-down period */
#define COM3_TRI_DATA 0x02 /* Tri-state option for output data at power-down period */
#define COM3_COLOR_BAR 0x01 /* Sensor color bar test pattern output enable */
#define COM3_SET_CBAR(r, x) ((r&0xFE)|((x&1)<<0))
#define COM3_SET_MIRROR(r, x) ((r&0xBF)|((x&1)<<6))
#define COM3_SET_FLIP(r, x) ((r&0x7F)|((x&1)<<7))
#define COM4 0x0D /* Common Control 4 */
#define COM4_PLL_BYPASS 0x00 /* Bypass PLL */
#define COM4_PLL_4x 0x40 /* PLL frequency 4x */
#define COM4_PLL_6x 0x80 /* PLL frequency 6x */
#define COM4_PLL_8x 0xc0 /* PLL frequency 8x */
#define COM4_AEC_FULL 0x00 /* AEC evaluate full window */
#define COM4_AEC_1_2 0x10 /* AEC evaluate 1/2 window */
#define COM4_AEC_1_4 0x20 /* AEC evaluate 1/4 window */
#define COM4_AEC_2_3 0x30 /* AEC evaluate 2/3 window */
#define COM5 0x0E /* Common Control 5 */
#define COM5_AFR 0x80 /* Auto frame rate control ON/OFF selection (night mode) */
#define COM5_AFR_SPEED 0x40 /* Auto frame rate control speed selection */
#define COM5_AFR_0 0x00 /* No reduction of frame rate */
#define COM5_AFR_1_2 0x10 /* Max reduction to 1/2 frame rate */
#define COM5_AFR_1_4 0x20 /* Max reduction to 1/4 frame rate */
#define COM5_AFR_1_8 0x30 /* Max reduction to 1/8 frame rate */
#define COM5_AFR_4x 0x04 /* Add frame when AGC reaches 4x gain */
#define COM5_AFR_8x 0x08 /* Add frame when AGC reaches 8x gain */
#define COM5_AFR_16x 0x0c /* Add frame when AGC reaches 16x gain */
#define COM5_AEC_NO_LIMIT 0x01 /* No limit to AEC increase step */
#define COM6 0x0F /* Common Control 6 */
#define COM6_AUTO_WINDOW 0x01 /* Auto window setting ON/OFF selection when format changes */
#define AEC 0x10 /* AEC[7:0] (see register AECH for AEC[15:8]) */
#define CLKRC 0x11 /* Internal Clock */
#define COM7 0x12 /* Common Control 7 */
#define COM7_RESET 0x80 /* SCCB Register Reset */
#define COM7_RES_VGA 0x00 /* Resolution VGA */
#define COM7_RES_QVGA 0x40 /* Resolution QVGA */
#define COM7_BT656 0x20 /* BT.656 protocol ON/OFF */
#define COM7_SENSOR_RAW 0x10 /* Sensor RAW */
#define COM7_FMT_GBR422 0x00 /* RGB output format GBR422 */
#define COM7_FMT_RGB565 0x04 /* RGB output format RGB565 */
#define COM7_FMT_RGB555 0x08 /* RGB output format RGB555 */
#define COM7_FMT_RGB444 0x0C /* RGB output format RGB444 */
#define COM7_FMT_YUV 0x00 /* Output format YUV */
#define COM7_FMT_P_BAYER 0x01 /* Output format Processed Bayer RAW */
#define COM7_FMT_RGB 0x02 /* Output format RGB */
#define COM7_FMT_R_BAYER 0x03 /* Output format Bayer RAW */
#define COM7_SET_FMT(r, x) ((r&0xFC)|((x&0x3)<<0))
#define COM7_SET_RGB(r, x) ((r&0xF0)|(x&0x0C)|COM7_FMT_RGB)
#define COM8 0x13 /* Common Control 8 */
#define COM8_FAST_AUTO 0x80 /* Enable fast AGC/AEC algorithm */
#define COM8_STEP_VSYNC 0x00 /* AEC - Step size limited to vertical blank */
#define COM8_STEP_UNLIMIT 0x40 /* AEC - Step size unlimited step size */
#define COM8_BANDF_EN 0x20 /* Banding filter ON/OFF */
#define COM8_AEC_BANDF 0x10 /* Enable AEC below banding value */
#define COM8_AEC_FINE_EN 0x08 /* Fine AEC ON/OFF control */
#define COM8_AGC_EN 0x04 /* AGC Enable */
#define COM8_AWB_EN 0x02 /* AWB Enable */
#define COM8_AEC_EN 0x01 /* AEC Enable */
#define COM8_SET_AGC(r, x) ((r&0xFB)|((x&0x1)<<2))
#define COM8_SET_AWB(r, x) ((r&0xFD)|((x&0x1)<<1))
#define COM8_SET_AEC(r, x) ((r&0xFE)|((x&0x1)<<0))
#define COM9 0x14 /* Common Control 9 */
#define COM9_HISTO_AVG 0x80 /* Histogram or average based AEC/AGC selection */
#define COM9_AGC_GAIN_2x 0x00 /* Automatic Gain Ceiling 2x */
#define COM9_AGC_GAIN_4x 0x10 /* Automatic Gain Ceiling 4x */
#define COM9_AGC_GAIN_8x 0x20 /* Automatic Gain Ceiling 8x */
#define COM9_AGC_GAIN_16x 0x30 /* Automatic Gain Ceiling 16x */
#define COM9_AGC_GAIN_32x 0x40 /* Automatic Gain Ceiling 32x */
#define COM9_DROP_VSYNC 0x04 /* Drop VSYNC output of corrupt frame */
#define COM9_DROP_HREF 0x02 /* Drop HREF output of corrupt frame */
#define COM9_SET_AGC(r, x) ((r&0x8F)|((x&0x07)<<4))
#define COM10 0x15 /* Common Control 10 */
#define COM10_NEGATIVE 0x80 /* Output negative data */
#define COM10_HSYNC_EN 0x40 /* HREF changes to HSYNC */
#define COM10_PCLK_FREE 0x00 /* PCLK output option: free running PCLK */
#define COM10_PCLK_MASK 0x20 /* PCLK output option: masked during horizontal blank */
#define COM10_PCLK_REV 0x10 /* PCLK reverse */
#define COM10_HREF_REV 0x08 /* HREF reverse */
#define COM10_VSYNC_FALLING 0x00 /* VSYNC changes on falling edge of PCLK */
#define COM10_VSYNC_RISING 0x04 /* VSYNC changes on rising edge of PCLK */
#define COM10_VSYNC_NEG 0x02 /* VSYNC negative */
#define COM10_OUT_RANGE_8 0x01 /* Output data range: Full range */
#define COM10_OUT_RANGE_10 0x00 /* Output data range: Data from [10] to [F0] (8 MSBs) */
#define REG16 0x16 /* Register 16 */
#define REG16_BIT_SHIFT 0x80 /* Bit shift test pattern options */
#define HSTART 0x17 /* Horizontal Frame (HREF column) Start 8 MSBs (2 LSBs are at HREF[5:4]) */
#define HSIZE 0x18 /* Horizontal Sensor Size (2 LSBs are at HREF[1:0]) */
#define VSTART 0x19 /* Vertical Frame (row) Start 8 MSBs (1 LSB is at HREF[6]) */
#define VSIZE 0x1A /* Vertical Sensor Size (1 LSB is at HREF[2]) */
#define PSHFT 0x1B /* Data Format - Pixel Delay Select */
#define REG_MIDH 0x1C /* Manufacturer ID Byte – High */
#define REG_MIDL 0x1D /* Manufacturer ID Byte – Low */
#define LAEC 0x1F /* Fine AEC Value - defines exposure value less than one row period */
#define COM11 0x20 /* Common Control 11 */
#define COM11_SNGL_FRAME_EN 0x02 /* Single frame ON/OFF selection */
#define COM11_SNGL_XFR_TRIG 0x01 /* Single frame transfer trigger */
#define BDBASE 0x22 /* Banding Filter Minimum AEC Value */
#define DBSTEP 0x23 /* Banding Filter Maximum Step */
#define AEW 0x24 /* AGC/AEC - Stable Operating Region (Upper Limit) */
#define AEB 0x25 /* AGC/AEC - Stable Operating Region (Lower Limit) */
#define VPT 0x26 /* AGC/AEC Fast Mode Operating Region */
#define REG28 0x28 /* Selection on the number of dummy rows, N */
#define HOUTSIZE 0x29 /* Horizontal Data Output Size MSBs (2 LSBs at register EXHCH[1:0]) */
#define EXHCH 0x2A /* Dummy Pixel Insert MSB */
#define EXHCL 0x2B /* Dummy Pixel Insert LSB */
#define VOUTSIZE 0x2C /* Vertical Data Output Size MSBs (LSB at register EXHCH[2]) */
#define ADVFL 0x2D /* LSB of Insert Dummy Rows in Vertical Sync (1 bit equals 1 row) */
#define ADVFH 0x2E /* MSB of Insert Dummy Rows in Vertical Sync */
#define YAVE 0x2F /* Y/G Channel Average Value */
#define LUMHTH 0x30 /* Histogram AEC/AGC Luminance High Level Threshold */
#define LUMLTH 0x31 /* Histogram AEC/AGC Luminance Low Level Threshold */
#define HREF 0x32 /* Image Start and Size Control */
#define DM_LNL 0x33 /* Dummy Row Low 8 Bits */
#define DM_LNH 0x34 /* Dummy Row High 8 Bits */
#define ADOFF_B 0x35 /* AD Offset Compensation Value for B Channel */
#define ADOFF_R 0x36 /* AD Offset Compensation Value for R Channel */
#define ADOFF_GB 0x37 /* AD Offset Compensation Value for GB Channel */
#define ADOFF_GR 0x38 /* AD Offset Compensation Value for GR Channel */
#define OFF_B 0x39 /* AD Offset Compensation Value for B Channel */
#define OFF_R 0x3A /* AD Offset Compensation Value for R Channel */
#define OFF_GB 0x3B /* AD Offset Compensation Value for GB Channel */
#define OFF_GR 0x3C /* AD Offset Compensation Value for GR Channel */
#define COM12 0x3D /* DC offset compensation for analog process */
#define COM13 0x3E /* Common Control 13 */
#define COM13_BLC_EN 0x80 /* BLC enable */
#define COM13_ADC_EN 0x40 /* ADC channel BLC ON/OFF control */
#define COM13_ANALOG_BLC 0x20 /* Analog processing channel BLC ON/OFF control */
#define COM13_ABLC_GAIN_EN 0x04 /* ABLC gain trigger enable */
#define COM14 0x3F /* Common Control 14 */
#define COM15 0x40 /* Common Control 15 */
#define COM16 0x41 /* Common Control 16 */
#define TGT_B 0x42 /* BLC Blue Channel Target Value */
#define TGT_R 0x43 /* BLC Red Channel Target Value */
#define TGT_GB 0x44 /* BLC Gb Channel Target Value */
#define TGT_GR 0x45 /* BLC Gr Channel Target Value */
#define LC_CTR 0x46 /* Lens Correction Control */
#define LC_CTR_RGB_COMP_1 0x00 /* R, G, and B channel compensation coefficient is set by LC_COEF (0x49) */
#define LC_CTR_RGB_COMP_3 0x04 /* R, G, and B channel compensation coefficient is set by registers
LC_COEFB (0x4B), LC_COEF (0x49), and LC_COEFR (0x4C), respectively */
#define LC_CTR_EN 0x01 /* Lens correction enable */
#define LC_XC 0x47 /* X Coordinate of Lens Correction Center Relative to Array Center */
#define LC_YC 0x48 /* Y Coordinate of Lens Correction Center Relative to Array Center */
#define LC_COEF 0x49 /* Lens Correction Coefficient */
#define LC_RADI 0x4A /* Lens Correction Radius */
#define LC_COEFB 0x4B /* Lens Correction B Channel Compensation Coefficient */
#define LC_COEFR 0x4C /* Lens Correction R Channel Compensation Coefficient */
#define FIXGAIN 0x4D /* Analog Fix Gain Amplifier */
#define AREF0 0x4E /* Sensor Reference Control */
#define AREF1 0x4F /* Sensor Reference Current Control */
#define AREF2 0x50 /* Analog Reference Control */
#define AREF3 0x51 /* ADC Reference Control */
#define AREF4 0x52 /* ADC Reference Control */
#define AREF5 0x53 /* ADC Reference Control */
#define AREF6 0x54 /* Analog Reference Control */
#define AREF7 0x55 /* Analog Reference Control */
#define UFIX 0x60 /* U Channel Fixed Value Output */
#define VFIX 0x61 /* V Channel Fixed Value Output */
#define AWBB_BLK 0x62 /* AWB Option for Advanced AWB */
#define AWB_CTRL0 0x63 /* AWB Control Byte 0 */
#define AWB_CTRL0_GAIN_EN 0x80 /* AWB gain enable */
#define AWB_CTRL0_CALC_EN 0x40 /* AWB calculate enable */
#define AWB_CTRL0_WBC_MASK 0x0F /* WBC threshold 2 */
#define DSP_CTRL1 0x64 /* DSP Control Byte 1 */
#define DSP_CTRL1_FIFO_EN 0x80 /* FIFO enable/disable selection */
#define DSP_CTRL1_UV_EN 0x40 /* UV adjust function ON/OFF selection */
#define DSP_CTRL1_SDE_EN 0x20 /* SDE enable */
#define DSP_CTRL1_MTRX_EN 0x10 /* Color matrix ON/OFF selection */
#define DSP_CTRL1_INTRP_EN 0x08 /* Interpolation ON/OFF selection */
#define DSP_CTRL1_GAMMA_EN 0x04 /* Gamma function ON/OFF selection */
#define DSP_CTRL1_BLACK_EN 0x02 /* Black defect auto correction ON/OFF */
#define DSP_CTRL1_WHITE_EN 0x01 /* White defect auto correction ON/OFF */
#define DSP_CTRL2 0x65 /* DSP Control Byte 2 */
#define DSP_CTRL2_VDCW_EN 0x08 /* Vertical DCW enable */
#define DSP_CTRL2_HDCW_EN 0x04 /* Horizontal DCW enable */
#define DSP_CTRL2_VZOOM_EN 0x02 /* Vertical zoom out enable */
#define DSP_CTRL2_HZOOM_EN 0x01 /* Horizontal zoom out enable */
#define DSP_CTRL3 0x66 /* DSP Control Byte 3 */
#define DSP_CTRL3_UV_EN 0x80 /* UV output sequence option */
#define DSP_CTRL3_CBAR_EN 0x20 /* DSP color bar ON/OFF selection */
#define DSP_CTRL3_FIFO_EN 0x08 /* FIFO power down ON/OFF selection */
#define DSP_CTRL3_SCAL1_PWDN 0x04 /* Scaling module power down control 1 */
#define DSP_CTRL3_SCAL2_PWDN 0x02 /* Scaling module power down control 2 */
#define DSP_CTRL3_INTRP_PWDN 0x01 /* Interpolation module power down control */
#define DSP_CTRL3_SET_CBAR(r, x) ((r&0xDF)|((x&1)<<5))
#define DSP_CTRL4 0x67 /* DSP Control Byte 4 */
#define DSP_CTRL4_YUV_RGB 0x00 /* Output selection YUV or RGB */
#define DSP_CTRL4_RAW8 0x02 /* Output selection RAW8 */
#define DSP_CTRL4_RAW10 0x03 /* Output selection RAW10 */
#define AWB_BIAS 0x68 /* AWB BLC Level Clip */
#define AWB_CTRL1 0x69 /* AWB Control 1 */
#define AWB_CTRL2 0x6A /* AWB Control 2 */
#define AWB_CTRL3 0x6B /* AWB Control 3 */
#define AWB_CTRL3_ADVANCED 0x80 /* AWB mode select - Advanced AWB */
#define AWB_CTRL3_SIMPLE 0x00 /* AWB mode select - Simple AWB */
#define AWB_CTRL4 0x6C /* AWB Control 4 */
#define AWB_CTRL5 0x6D /* AWB Control 5 */
#define AWB_CTRL6 0x6E /* AWB Control 6 */
#define AWB_CTRL7 0x6F /* AWB Control 7 */
#define AWB_CTRL8 0x70 /* AWB Control 8 */
#define AWB_CTRL9 0x71 /* AWB Control 9 */
#define AWB_CTRL10 0x72 /* AWB Control 10 */
#define AWB_CTRL11 0x73 /* AWB Control 11 */
#define AWB_CTRL12 0x74 /* AWB Control 12 */
#define AWB_CTRL13 0x75 /* AWB Control 13 */
#define AWB_CTRL14 0x76 /* AWB Control 14 */
#define AWB_CTRL15 0x77 /* AWB Control 15 */
#define AWB_CTRL16 0x78 /* AWB Control 16 */
#define AWB_CTRL17 0x79 /* AWB Control 17 */
#define AWB_CTRL18 0x7A /* AWB Control 18 */
#define AWB_CTRL19 0x7B /* AWB Control 19 */
#define AWB_CTRL20 0x7C /* AWB Control 20 */
#define AWB_CTRL21 0x7D /* AWB Control 21 */
#define GAM1 0x7E /* Gamma Curve 1st Segment Input End Point 0x04 Output Value */
#define GAM2 0x7F /* Gamma Curve 2nd Segment Input End Point 0x08 Output Value */
#define GAM3 0x80 /* Gamma Curve 3rd Segment Input End Point 0x10 Output Value */
#define GAM4 0x81 /* Gamma Curve 4th Segment Input End Point 0x20 Output Value */
#define GAM5 0x82 /* Gamma Curve 5th Segment Input End Point 0x28 Output Value */
#define GAM6 0x83 /* Gamma Curve 6th Segment Input End Point 0x30 Output Value */
#define GAM7 0x84 /* Gamma Curve 7th Segment Input End Point 0x38 Output Value */
#define GAM8 0x85 /* Gamma Curve 8th Segment Input End Point 0x40 Output Value */
#define GAM9 0x86 /* Gamma Curve 9th Segment Input End Point 0x48 Output Value */
#define GAM10 0x87 /* Gamma Curve 10th Segment Input End Point 0x50 Output Value */
#define GAM11 0x88 /* Gamma Curve 11th Segment Input End Point 0x60 Output Value */
#define GAM12 0x89 /* Gamma Curve 12th Segment Input End Point 0x70 Output Value */
#define GAM13 0x8A /* Gamma Curve 13th Segment Input End Point 0x90 Output Value */
#define GAM14 0x8B /* Gamma Curve 14th Segment Input End Point 0xB0 Output Value */
#define GAM15 0x8C /* Gamma Curve 15th Segment Input End Point 0xD0 Output Value */
#define SLOP 0x8D /* Gamma Curve Highest Segment Slope */
#define DNSTH 0x8E /* De-noise Threshold */
#define EDGE0 0x8F /* Edge Enhancement Strength Control */
#define EDGE1 0x90 /* Edge Enhancement Threshold Control */
#define DNSOFF 0x91 /* Auto De-noise Threshold Control */
#define EDGE2 0x92 /* Edge Enhancement Strength Upper Limit */
#define EDGE3 0x93 /* Edge Enhancement Strength Upper Limit */
#define MTX1 0x94 /* Matrix Coefficient 1 */
#define MTX2 0x95 /* Matrix Coefficient 2 */
#define MTX3 0x96 /* Matrix Coefficient 3 */
#define MTX4 0x97 /* Matrix Coefficient 4 */
#define MTX5 0x98 /* Matrix Coefficient 5 */
#define MTX6 0x99 /* Matrix Coefficient 6 */
#define MTX_CTRL 0x9A /* Matrix Control */
#define MTX_CTRL_DBL_EN 0x80 /* Matrix double ON/OFF selection */
#define BRIGHTNESS 0x9B /* Brightness Control */
#define CONTRAST 0x9C /* Contrast Gain */
#define UVADJ0 0x9E /* Auto UV Adjust Control 0 */
#define UVADJ1 0x9F /* Auto UV Adjust Control 1 */
#define SCAL0 0xA0 /* DCW Ratio Control */
#define SCAL1 0xA1 /* Horizontal Zoom Out Control */
#define SCAL2 0xA2 /* Vertical Zoom Out Control */
#define FIFODLYM 0xA3 /* FIFO Manual Mode Delay Control */
#define FIFODLYA 0xA4 /* FIFO Auto Mode Delay Control */
#define SDE 0xA6 /* Special Digital Effect Control */
#define SDE_NEGATIVE_EN 0x40 /* Negative image enable */
#define SDE_GRAYSCALE_EN 0x20 /* Gray scale image enable */
#define SDE_V_FIXED_EN 0x10 /* V fixed value enable */
#define SDE_U_FIXED_EN 0x08 /* U fixed value enable */
#define SDE_CONT_BRIGHT_EN 0x04 /* Contrast/Brightness enable */
#define SDE_SATURATION_EN 0x02 /* Saturation enable */
#define SDE_HUE_EN 0x01 /* Hue enable */
#define USAT 0xA7 /* U Component Saturation Gain */
#define VSAT 0xA8 /* V Component Saturation Gain */
#define HUECOS 0xA9 /* Cosine value × 0x80 */
#define HUESIN 0xAA /* Sine value × 0x80 */
#define SIGN_BIT 0xAB /* Sign Bit for Hue and Brightness */
#define DSPAUTO 0xAC /* DSP Auto Function ON/OFF Control */
#define DSPAUTO_AWB_EN 0x80 /* AWB auto threshold control */
#define DSPAUTO_DENOISE_EN 0x40 /* De-noise auto threshold control */
#define DSPAUTO_EDGE_EN 0x20 /* Sharpness (edge enhancement) auto strength control */
#define DSPAUTO_UV_EN 0x10 /* UV adjust auto slope control */
#define DSPAUTO_SCAL0_EN 0x08 /* Auto scaling factor control (register SCAL0 (0xA0)) */
#define DSPAUTO_SCAL1_EN 0x04 /* Auto scaling factor control (registers SCAL1 (0xA1 and SCAL2 (0xA2))*/
#define SET_REG(reg, x) (##reg_DEFAULT|x)
#endif //__REG_REGS_H__

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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* SCCB (I2C like) driver.
*
*/
#include <stdbool.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include "sccb.h"
#include <stdio.h>
#include "sdkconfig.h"
#if defined(ARDUINO_ARCH_ESP32) && defined(CONFIG_ARDUHAL_ESP_LOG)
#include "esp32-hal-log.h"
#else
#include "esp_log.h"
static const char* TAG = "sccb";
#endif
//#undef CONFIG_SCCB_HARDWARE_I2C
#define LITTLETOBIG(x) ((x<<8)|(x>>8))
#ifdef CONFIG_SCCB_HARDWARE_I2C
#include "driver/i2c.h"
#define SCCB_FREQ 200000 /*!< I2C master frequency*/
#define WRITE_BIT I2C_MASTER_WRITE /*!< I2C master write */
#define READ_BIT I2C_MASTER_READ /*!< I2C master read */
#define ACK_CHECK_EN 0x1 /*!< I2C master will check ack from slave*/
#define ACK_CHECK_DIS 0x0 /*!< I2C master will not check ack from slave */
#define ACK_VAL 0x0 /*!< I2C ack value */
#define NACK_VAL 0x1 /*!< I2C nack value */
#if CONFIG_SCCB_HARDWARE_I2C_PORT1
const int SCCB_I2C_PORT = 1;
#else
const int SCCB_I2C_PORT = 0;
#endif
static uint8_t ESP_SLAVE_ADDR = 0x3c;
#else
#include "twi.h"
#endif
int SCCB_Init(int pin_sda, int pin_scl)
{
ESP_LOGI(TAG, "pin_sda %d pin_scl %d\n", pin_sda, pin_scl);
#ifdef CONFIG_SCCB_HARDWARE_I2C
//log_i("SCCB_Init start");
i2c_config_t conf;
conf.mode = I2C_MODE_MASTER;
conf.sda_io_num = pin_sda;
conf.sda_pullup_en = GPIO_PULLUP_ENABLE;
conf.scl_io_num = pin_scl;
conf.scl_pullup_en = GPIO_PULLUP_ENABLE;
conf.master.clk_speed = SCCB_FREQ;
i2c_param_config(SCCB_I2C_PORT, &conf);
i2c_driver_install(SCCB_I2C_PORT, conf.mode, 0, 0, 0);
#else
twi_init(pin_sda, pin_scl);
#endif
return 0;
}
uint8_t SCCB_Probe()
{
#ifdef CONFIG_SCCB_HARDWARE_I2C
uint8_t slave_addr = 0x0;
while(slave_addr < 0x7f) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, ( slave_addr << 1 ) | WRITE_BIT, ACK_CHECK_EN);
i2c_master_stop(cmd);
esp_err_t ret = i2c_master_cmd_begin(SCCB_I2C_PORT, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
if( ret == ESP_OK) {
ESP_SLAVE_ADDR = slave_addr;
return ESP_SLAVE_ADDR;
}
slave_addr++;
}
return ESP_SLAVE_ADDR;
#else
uint8_t reg = 0x00;
uint8_t slv_addr = 0x00;
ESP_LOGI(TAG, "SCCB_Probe start");
for (uint8_t i = 0; i < 127; i++) {
if (twi_writeTo(i, &reg, 1, true) == 0) {
slv_addr = i;
break;
}
if (i!=126) {
vTaskDelay(10 / portTICK_PERIOD_MS); // Necessary for OV7725 camera (not for OV2640).
}
}
return slv_addr;
#endif
}
uint8_t SCCB_Read(uint8_t slv_addr, uint8_t reg)
{
#ifdef CONFIG_SCCB_HARDWARE_I2C
uint8_t data=0;
esp_err_t ret = ESP_FAIL;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, ( slv_addr << 1 ) | WRITE_BIT, ACK_CHECK_EN);
i2c_master_write_byte(cmd, reg, ACK_CHECK_EN);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(SCCB_I2C_PORT, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
if(ret != ESP_OK) return -1;
cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, ( slv_addr << 1 ) | READ_BIT, ACK_CHECK_EN);
i2c_master_read_byte(cmd, &data, NACK_VAL);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(SCCB_I2C_PORT, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
if(ret != ESP_OK) {
ESP_LOGE(TAG, "SCCB_Read Failed addr:0x%02x, reg:0x%02x, data:0x%02x, ret:%d", slv_addr, reg, data, ret);
}
return data;
#else
uint8_t data=0;
int rc = twi_writeTo(slv_addr, &reg, 1, true);
if (rc != 0) {
data = 0xff;
} else {
rc = twi_readFrom(slv_addr, &data, 1, true);
if (rc != 0) {
data=0xFF;
}
}
if (rc != 0) {
ESP_LOGE(TAG, "SCCB_Read [%02x] failed rc=%d\n", reg, rc);
}
return data;
#endif
}
uint8_t SCCB_Write(uint8_t slv_addr, uint8_t reg, uint8_t data)
{
#ifdef CONFIG_SCCB_HARDWARE_I2C
esp_err_t ret = ESP_FAIL;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, ( slv_addr << 1 ) | WRITE_BIT, ACK_CHECK_EN);
i2c_master_write_byte(cmd, reg, ACK_CHECK_EN);
i2c_master_write_byte(cmd, data, ACK_CHECK_EN);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(SCCB_I2C_PORT, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
if(ret != ESP_OK) {
ESP_LOGE(TAG, "SCCB_Write Failed addr:0x%02x, reg:0x%02x, data:0x%02x, ret:%d", slv_addr, reg, data, ret);
}
return ret == ESP_OK ? 0 : -1;
#else
uint8_t ret=0;
uint8_t buf[] = {reg, data};
if(twi_writeTo(slv_addr, buf, 2, true) != 0) {
ret=0xFF;
}
if (ret != 0) {
ESP_LOGE(TAG, "SCCB_Write [%02x]=%02x failed\n", reg, data);
}
return ret;
#endif
}
uint8_t SCCB_Read16(uint8_t slv_addr, uint16_t reg)
{
#ifdef CONFIG_SCCB_HARDWARE_I2C
uint8_t data=0;
esp_err_t ret = ESP_FAIL;
uint16_t reg_htons = LITTLETOBIG(reg);
uint8_t *reg_u8 = (uint8_t *)&reg_htons;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, ( slv_addr << 1 ) | WRITE_BIT, ACK_CHECK_EN);
i2c_master_write_byte(cmd, reg_u8[0], ACK_CHECK_EN);
i2c_master_write_byte(cmd, reg_u8[1], ACK_CHECK_EN);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(SCCB_I2C_PORT, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
if(ret != ESP_OK) return -1;
cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, ( slv_addr << 1 ) | READ_BIT, ACK_CHECK_EN);
i2c_master_read_byte(cmd, &data, NACK_VAL);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(SCCB_I2C_PORT, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
if(ret != ESP_OK) {
ESP_LOGE(TAG, "W [%04x]=%02x fail\n", reg, data);
}
return data;
#else
uint8_t data=0;
uint16_t reg_htons = LITTLETOBIG(reg);
uint8_t *reg_u8 = (uint8_t *)&reg_htons;
uint8_t buf[] = {reg_u8[0], reg_u8[1]};
int rc = twi_writeTo(slv_addr, buf, 2, true);
if (rc != 0) {
data = 0xff;
} else {
rc = twi_readFrom(slv_addr, &data, 1, true);
if (rc != 0) {
data=0xFF;
}
}
if (rc != 0) {
ESP_LOGE(TAG, "R [%04x] fail rc=%d\n", reg, rc);
}
return data;
#endif
}
uint8_t SCCB_Write16(uint8_t slv_addr, uint16_t reg, uint8_t data)
{
static uint16_t i = 0;
#ifdef CONFIG_SCCB_HARDWARE_I2C
esp_err_t ret = ESP_FAIL;
uint16_t reg_htons = LITTLETOBIG(reg);
uint8_t *reg_u8 = (uint8_t *)&reg_htons;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, ( slv_addr << 1 ) | WRITE_BIT, ACK_CHECK_EN);
i2c_master_write_byte(cmd, reg_u8[0], ACK_CHECK_EN);
i2c_master_write_byte(cmd, reg_u8[1], ACK_CHECK_EN);
i2c_master_write_byte(cmd, data, ACK_CHECK_EN);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(SCCB_I2C_PORT, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
if(ret != ESP_OK) {
ESP_LOGE(TAG, "W [%04x]=%02x %d fail\n", reg, data, i++);
}
return ret == ESP_OK ? 0 : -1;
#else
uint8_t ret=0;
uint16_t reg_htons = LITTLETOBIG(reg);
uint8_t *reg_u8 = (uint8_t *)&reg_htons;
uint8_t buf[] = {reg_u8[0], reg_u8[1], data};
if(twi_writeTo(slv_addr, buf, 3, true) != 0) {
ret = 0xFF;
}
if (ret != 0) {
ESP_LOGE(TAG, "W [%04x]=%02x %d fail\n", reg, data, i++);
}
return ret;
#endif
}

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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* SCCB (I2C like) driver.
*
*/
#ifndef __SCCB_H__
#define __SCCB_H__
#include <stdint.h>
int SCCB_Init(int pin_sda, int pin_scl);
uint8_t SCCB_Probe();
uint8_t SCCB_Read(uint8_t slv_addr, uint8_t reg);
uint8_t SCCB_Write(uint8_t slv_addr, uint8_t reg, uint8_t data);
uint8_t SCCB_Read16(uint8_t slv_addr, uint16_t reg);
uint8_t SCCB_Write16(uint8_t slv_addr, uint16_t reg, uint8_t data);
#endif // __SCCB_H__

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#include "sensor.h"
const resolution_info_t resolution[FRAMESIZE_INVALID] = {
{ 96, 96, ASPECT_RATIO_1X1 }, /* 96x96 */
{ 160, 120, ASPECT_RATIO_4X3 }, /* QQVGA */
{ 176, 144, ASPECT_RATIO_5X4 }, /* QCIF */
{ 240, 176, ASPECT_RATIO_4X3 }, /* HQVGA */
{ 240, 240, ASPECT_RATIO_1X1 }, /* 240x240 */
{ 320, 240, ASPECT_RATIO_4X3 }, /* QVGA */
{ 400, 296, ASPECT_RATIO_4X3 }, /* CIF */
{ 480, 320, ASPECT_RATIO_3X2 }, /* HVGA */
{ 640, 480, ASPECT_RATIO_4X3 }, /* VGA */
{ 800, 600, ASPECT_RATIO_4X3 }, /* SVGA */
{ 1024, 768, ASPECT_RATIO_4X3 }, /* XGA */
{ 1280, 720, ASPECT_RATIO_16X9 }, /* HD */
{ 1280, 1024, ASPECT_RATIO_5X4 }, /* SXGA */
{ 1600, 1200, ASPECT_RATIO_4X3 }, /* UXGA */
// 3MP Sensors
{ 1920, 1080, ASPECT_RATIO_16X9 }, /* FHD */
{ 720, 1280, ASPECT_RATIO_9X16 }, /* Portrait HD */
{ 864, 1536, ASPECT_RATIO_9X16 }, /* Portrait 3MP */
{ 2048, 1536, ASPECT_RATIO_4X3 }, /* QXGA */
// 5MP Sensors
{ 2560, 1440, ASPECT_RATIO_16X9 }, /* QHD */
{ 2560, 1600, ASPECT_RATIO_16X10 }, /* WQXGA */
{ 1088, 1920, ASPECT_RATIO_9X16 }, /* Portrait FHD */
{ 2560, 1920, ASPECT_RATIO_4X3 }, /* QSXGA */
};

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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* Sensor abstraction layer.
*
*/
#ifndef __SENSOR_H__
#define __SENSOR_H__
#include <stdint.h>
#include <stdbool.h>
#define OV9650_PID (0x96)
#define OV7725_PID (0x77)
#define OV2640_PID (0x26)
#define OV3660_PID (0x36)
#define OV5640_PID (0x56)
typedef enum {
PIXFORMAT_RGB565, // 2BPP/RGB565
PIXFORMAT_YUV422, // 2BPP/YUV422
PIXFORMAT_GRAYSCALE, // 1BPP/GRAYSCALE
PIXFORMAT_JPEG, // JPEG/COMPRESSED
PIXFORMAT_RGB888, // 3BPP/RGB888
PIXFORMAT_RAW, // RAW
PIXFORMAT_RGB444, // 3BP2P/RGB444
PIXFORMAT_RGB555, // 3BP2P/RGB555
} pixformat_t;
typedef enum {
FRAMESIZE_96X96, // 96x96
FRAMESIZE_QQVGA, // 160x120
FRAMESIZE_QCIF, // 176x144
FRAMESIZE_HQVGA, // 240x176
FRAMESIZE_240X240, // 240x240
FRAMESIZE_QVGA, // 320x240
FRAMESIZE_CIF, // 400x296
FRAMESIZE_HVGA, // 480x320
FRAMESIZE_VGA, // 640x480
FRAMESIZE_SVGA, // 800x600
FRAMESIZE_XGA, // 1024x768
FRAMESIZE_HD, // 1280x720
FRAMESIZE_SXGA, // 1280x1024
FRAMESIZE_UXGA, // 1600x1200
// 3MP Sensors
FRAMESIZE_FHD, // 1920x1080
FRAMESIZE_P_HD, // 720x1280
FRAMESIZE_P_3MP, // 864x1536
FRAMESIZE_QXGA, // 2048x1536
// 5MP Sensors
FRAMESIZE_QHD, // 2560x1440
FRAMESIZE_WQXGA, // 2560x1600
FRAMESIZE_P_FHD, // 1080x1920
FRAMESIZE_QSXGA, // 2560x1920
FRAMESIZE_INVALID
} framesize_t;
typedef enum {
ASPECT_RATIO_4X3,
ASPECT_RATIO_3X2,
ASPECT_RATIO_16X10,
ASPECT_RATIO_5X3,
ASPECT_RATIO_16X9,
ASPECT_RATIO_21X9,
ASPECT_RATIO_5X4,
ASPECT_RATIO_1X1,
ASPECT_RATIO_9X16
} aspect_ratio_t;
typedef enum {
GAINCEILING_2X,
GAINCEILING_4X,
GAINCEILING_8X,
GAINCEILING_16X,
GAINCEILING_32X,
GAINCEILING_64X,
GAINCEILING_128X,
} gainceiling_t;
typedef struct {
uint16_t max_width;
uint16_t max_height;
uint16_t start_x;
uint16_t start_y;
uint16_t end_x;
uint16_t end_y;
uint16_t offset_x;
uint16_t offset_y;
uint16_t total_x;
uint16_t total_y;
} ratio_settings_t;
typedef struct {
const uint16_t width;
const uint16_t height;
const aspect_ratio_t aspect_ratio;
} resolution_info_t;
// Resolution table (in sensor.c)
extern const resolution_info_t resolution[];
typedef struct {
uint8_t MIDH;
uint8_t MIDL;
uint8_t PID;
uint8_t VER;
} sensor_id_t;
typedef struct {
framesize_t framesize;//0 - 10
bool scale;
bool binning;
uint8_t quality;//0 - 63
int8_t brightness;//-2 - 2
int8_t contrast;//-2 - 2
int8_t saturation;//-2 - 2
int8_t sharpness;//-2 - 2
uint8_t denoise;
uint8_t special_effect;//0 - 6
uint8_t wb_mode;//0 - 4
uint8_t awb;
uint8_t awb_gain;
uint8_t aec;
uint8_t aec2;
int8_t ae_level;//-2 - 2
uint16_t aec_value;//0 - 1200
uint8_t agc;
uint8_t agc_gain;//0 - 30
uint8_t gainceiling;//0 - 6
uint8_t bpc;
uint8_t wpc;
uint8_t raw_gma;
uint8_t lenc;
uint8_t hmirror;
uint8_t vflip;
uint8_t dcw;
uint8_t colorbar;
} camera_status_t;
typedef struct _sensor sensor_t;
typedef struct _sensor {
sensor_id_t id; // Sensor ID.
uint8_t slv_addr; // Sensor I2C slave address.
pixformat_t pixformat;
camera_status_t status;
int xclk_freq_hz;
// Sensor function pointers
int (*init_status) (sensor_t *sensor);
int (*reset) (sensor_t *sensor);
int (*set_pixformat) (sensor_t *sensor, pixformat_t pixformat);
int (*set_framesize) (sensor_t *sensor, framesize_t framesize);
int (*set_contrast) (sensor_t *sensor, int level);
int (*set_brightness) (sensor_t *sensor, int level);
int (*set_saturation) (sensor_t *sensor, int level);
int (*set_sharpness) (sensor_t *sensor, int level);
int (*set_denoise) (sensor_t *sensor, int level);
int (*set_gainceiling) (sensor_t *sensor, gainceiling_t gainceiling);
int (*set_quality) (sensor_t *sensor, int quality);
int (*set_colorbar) (sensor_t *sensor, int enable);
int (*set_whitebal) (sensor_t *sensor, int enable);
int (*set_gain_ctrl) (sensor_t *sensor, int enable);
int (*set_exposure_ctrl) (sensor_t *sensor, int enable);
int (*set_hmirror) (sensor_t *sensor, int enable);
int (*set_vflip) (sensor_t *sensor, int enable);
int (*set_aec2) (sensor_t *sensor, int enable);
int (*set_awb_gain) (sensor_t *sensor, int enable);
int (*set_agc_gain) (sensor_t *sensor, int gain);
int (*set_aec_value) (sensor_t *sensor, int gain);
int (*set_special_effect) (sensor_t *sensor, int effect);
int (*set_wb_mode) (sensor_t *sensor, int mode);
int (*set_ae_level) (sensor_t *sensor, int level);
int (*set_dcw) (sensor_t *sensor, int enable);
int (*set_bpc) (sensor_t *sensor, int enable);
int (*set_wpc) (sensor_t *sensor, int enable);
int (*set_raw_gma) (sensor_t *sensor, int enable);
int (*set_lenc) (sensor_t *sensor, int enable);
int (*get_reg) (sensor_t *sensor, int reg, int mask);
int (*set_reg) (sensor_t *sensor, int reg, int mask, int value);
int (*set_res_raw) (sensor_t *sensor, int startX, int startY, int endX, int endY, int offsetX, int offsetY, int totalX, int totalY, int outputX, int outputY, bool scale, bool binning);
int (*set_pll) (sensor_t *sensor, int bypass, int mul, int sys, int root, int pre, int seld5, int pclken, int pclk);
int (*set_xclk) (sensor_t *sensor, int timer, int xclk);
} sensor_t;
#endif /* __SENSOR_H__ */

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stddef.h>
#include <string.h>
#include "img_converters.h"
#include "soc/efuse_reg.h"
#include "esp_heap_caps.h"
#include "yuv.h"
#include "sdkconfig.h"
#include "esp_jpg_decode.h"
#if defined(ARDUINO_ARCH_ESP32) && defined(CONFIG_ARDUHAL_ESP_LOG)
#include "esp32-hal-log.h"
#define TAG ""
#else
#include "esp_log.h"
static const char* TAG = "to_bmp";
#endif
static const int BMP_HEADER_LEN = 54;
typedef struct {
uint32_t filesize;
uint32_t reserved;
uint32_t fileoffset_to_pixelarray;
uint32_t dibheadersize;
int32_t width;
int32_t height;
uint16_t planes;
uint16_t bitsperpixel;
uint32_t compression;
uint32_t imagesize;
uint32_t ypixelpermeter;
uint32_t xpixelpermeter;
uint32_t numcolorspallette;
uint32_t mostimpcolor;
} bmp_header_t;
typedef struct {
uint16_t width;
uint16_t height;
uint16_t data_offset;
const uint8_t *input;
uint8_t *output;
} rgb_jpg_decoder;
static void *_malloc(size_t size)
{
return heap_caps_malloc(size, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
}
//output buffer and image width
static bool _rgb_write(void * arg, uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint8_t *data)
{
rgb_jpg_decoder * jpeg = (rgb_jpg_decoder *)arg;
if(!data){
if(x == 0 && y == 0){
//write start
jpeg->width = w;
jpeg->height = h;
//if output is null, this is BMP
if(!jpeg->output){
jpeg->output = (uint8_t *)_malloc((w*h*3)+jpeg->data_offset);
if(!jpeg->output){
return false;
}
}
} else {
//write end
}
return true;
}
size_t jw = jpeg->width*3;
size_t t = y * jw;
size_t b = t + (h * jw);
size_t l = x * 3;
uint8_t *out = jpeg->output+jpeg->data_offset;
uint8_t *o = out;
size_t iy, ix;
w = w * 3;
for(iy=t; iy<b; iy+=jw) {
o = out+iy+l;
for(ix=0; ix<w; ix+= 3) {
o[ix] = data[ix+2];
o[ix+1] = data[ix+1];
o[ix+2] = data[ix];
}
data+=w;
}
return true;
}
//input buffer
static uint32_t _jpg_read(void * arg, size_t index, uint8_t *buf, size_t len)
{
rgb_jpg_decoder * jpeg = (rgb_jpg_decoder *)arg;
if(buf) {
memcpy(buf, jpeg->input + index, len);
}
return len;
}
static bool jpg2rgb888(const uint8_t *src, size_t src_len, uint8_t * out, jpg_scale_t scale)
{
rgb_jpg_decoder jpeg;
jpeg.width = 0;
jpeg.height = 0;
jpeg.input = src;
jpeg.output = out;
jpeg.data_offset = 0;
if(esp_jpg_decode(src_len, scale, _jpg_read, _rgb_write, (void*)&jpeg) != ESP_OK){
return false;
}
return true;
}
bool jpg2bmp(const uint8_t *src, size_t src_len, uint8_t ** out, size_t * out_len)
{
rgb_jpg_decoder jpeg;
jpeg.width = 0;
jpeg.height = 0;
jpeg.input = src;
jpeg.output = NULL;
jpeg.data_offset = BMP_HEADER_LEN;
if(esp_jpg_decode(src_len, JPG_SCALE_NONE, _jpg_read, _rgb_write, (void*)&jpeg) != ESP_OK){
return false;
}
size_t output_size = jpeg.width*jpeg.height*3;
jpeg.output[0] = 'B';
jpeg.output[1] = 'M';
bmp_header_t * bitmap = (bmp_header_t*)&jpeg.output[2];
bitmap->reserved = 0;
bitmap->filesize = output_size+BMP_HEADER_LEN;
bitmap->fileoffset_to_pixelarray = BMP_HEADER_LEN;
bitmap->dibheadersize = 40;
bitmap->width = jpeg.width;
bitmap->height = -jpeg.height;//set negative for top to bottom
bitmap->planes = 1;
bitmap->bitsperpixel = 24;
bitmap->compression = 0;
bitmap->imagesize = output_size;
bitmap->ypixelpermeter = 0x0B13 ; //2835 , 72 DPI
bitmap->xpixelpermeter = 0x0B13 ; //2835 , 72 DPI
bitmap->numcolorspallette = 0;
bitmap->mostimpcolor = 0;
*out = jpeg.output;
*out_len = output_size+BMP_HEADER_LEN;
return true;
}
bool fmt2rgb888(const uint8_t *src_buf, size_t src_len, pixformat_t format, uint8_t * rgb_buf)
{
int pix_count = 0;
if(format == PIXFORMAT_JPEG) {
return jpg2rgb888(src_buf, src_len, rgb_buf, JPG_SCALE_NONE);
} else if(format == PIXFORMAT_RGB888) {
memcpy(rgb_buf, src_buf, src_len);
} else if(format == PIXFORMAT_RGB565) {
int i;
uint8_t hb, lb;
pix_count = src_len / 2;
for(i=0; i<pix_count; i++) {
hb = *src_buf++;
lb = *src_buf++;
*rgb_buf++ = (lb & 0x1F) << 3;
*rgb_buf++ = (hb & 0x07) << 5 | (lb & 0xE0) >> 3;
*rgb_buf++ = hb & 0xF8;
}
} else if(format == PIXFORMAT_GRAYSCALE) {
int i;
uint8_t b;
pix_count = src_len;
for(i=0; i<pix_count; i++) {
b = *src_buf++;
*rgb_buf++ = b;
*rgb_buf++ = b;
*rgb_buf++ = b;
}
} else if(format == PIXFORMAT_YUV422) {
pix_count = src_len / 2;
int i, maxi = pix_count / 2;
uint8_t y0, y1, u, v;
uint8_t r, g, b;
for(i=0; i<maxi; i++) {
y0 = *src_buf++;
u = *src_buf++;
y1 = *src_buf++;
v = *src_buf++;
yuv2rgb(y0, u, v, &r, &g, &b);
*rgb_buf++ = b;
*rgb_buf++ = g;
*rgb_buf++ = r;
yuv2rgb(y1, u, v, &r, &g, &b);
*rgb_buf++ = b;
*rgb_buf++ = g;
*rgb_buf++ = r;
}
}
return true;
}
bool fmt2bmp(uint8_t *src, size_t src_len, uint16_t width, uint16_t height, pixformat_t format, uint8_t ** out, size_t * out_len)
{
if(format == PIXFORMAT_JPEG) {
return jpg2bmp(src, src_len, out, out_len);
}
*out = NULL;
*out_len = 0;
int pix_count = width*height;
size_t out_size = (pix_count * 3) + BMP_HEADER_LEN;
uint8_t * out_buf = (uint8_t *)_malloc(out_size);
if(!out_buf) {
ESP_LOGE(TAG, "_malloc failed! %u", out_size);
return false;
}
out_buf[0] = 'B';
out_buf[1] = 'M';
bmp_header_t * bitmap = (bmp_header_t*)&out_buf[2];
bitmap->reserved = 0;
bitmap->filesize = out_size;
bitmap->fileoffset_to_pixelarray = BMP_HEADER_LEN;
bitmap->dibheadersize = 40;
bitmap->width = width;
bitmap->height = -height;//set negative for top to bottom
bitmap->planes = 1;
bitmap->bitsperpixel = 24;
bitmap->compression = 0;
bitmap->imagesize = pix_count * 3;
bitmap->ypixelpermeter = 0x0B13 ; //2835 , 72 DPI
bitmap->xpixelpermeter = 0x0B13 ; //2835 , 72 DPI
bitmap->numcolorspallette = 0;
bitmap->mostimpcolor = 0;
uint8_t * rgb_buf = out_buf + BMP_HEADER_LEN;
uint8_t * src_buf = src;
//convert data to RGB888
if(format == PIXFORMAT_RGB888) {
memcpy(rgb_buf, src_buf, pix_count*3);
} else if(format == PIXFORMAT_RGB565) {
int i;
uint8_t hb, lb;
for(i=0; i<pix_count; i++) {
hb = *src_buf++;
lb = *src_buf++;
*rgb_buf++ = (lb & 0x1F) << 3;
*rgb_buf++ = (hb & 0x07) << 5 | (lb & 0xE0) >> 3;
*rgb_buf++ = hb & 0xF8;
}
} else if(format == PIXFORMAT_GRAYSCALE) {
int i;
uint8_t b;
for(i=0; i<pix_count; i++) {
b = *src_buf++;
*rgb_buf++ = b;
*rgb_buf++ = b;
*rgb_buf++ = b;
}
} else if(format == PIXFORMAT_YUV422) {
int i, maxi = pix_count / 2;
uint8_t y0, y1, u, v;
uint8_t r, g, b;
for(i=0; i<maxi; i++) {
y0 = *src_buf++;
u = *src_buf++;
y1 = *src_buf++;
v = *src_buf++;
yuv2rgb(y0, u, v, &r, &g, &b);
*rgb_buf++ = b;
*rgb_buf++ = g;
*rgb_buf++ = r;
yuv2rgb(y1, u, v, &r, &g, &b);
*rgb_buf++ = b;
*rgb_buf++ = g;
*rgb_buf++ = r;
}
}
*out = out_buf;
*out_len = out_size;
return true;
}
bool frame2bmp(camera_fb_t * fb, uint8_t ** out, size_t * out_len)
{
return fmt2bmp(fb->buf, fb->len, fb->width, fb->height, fb->format, out, out_len);
}

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stddef.h>
#include <string.h>
#include "esp_attr.h"
#include "soc/efuse_reg.h"
#include "esp_heap_caps.h"
#include "esp_camera.h"
#include "img_converters.h"
#include "jpge.h"
#include "yuv.h"
#include "esp_system.h"
#if ESP_IDF_VERSION_MAJOR >= 4 // IDF 4+
#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
#include "esp32/spiram.h"
#else
#error Target CONFIG_IDF_TARGET is not supported
#endif
#else // ESP32 Before IDF 4.0
#include "esp_spiram.h"
#endif
#if defined(ARDUINO_ARCH_ESP32) && defined(CONFIG_ARDUHAL_ESP_LOG)
#include "esp32-hal-log.h"
#define TAG ""
#else
#include "esp_log.h"
static const char* TAG = "to_jpg";
#endif
static void *_malloc(size_t size)
{
void * res = malloc(size);
if(res) {
return res;
}
return heap_caps_malloc(size, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
}
static IRAM_ATTR void convert_line_format(uint8_t * src, pixformat_t format, uint8_t * dst, size_t width, size_t in_channels, size_t line)
{
int i=0, o=0, l=0;
if(format == PIXFORMAT_GRAYSCALE) {
memcpy(dst, src + line * width, width);
} else if(format == PIXFORMAT_RGB888) {
l = width * 3;
src += l * line;
for(i=0; i<l; i+=3) {
dst[o++] = src[i+2];
dst[o++] = src[i+1];
dst[o++] = src[i];
}
} else if(format == PIXFORMAT_RGB565) {
l = width * 2;
src += l * line;
for(i=0; i<l; i+=2) {
dst[o++] = src[i] & 0xF8;
dst[o++] = (src[i] & 0x07) << 5 | (src[i+1] & 0xE0) >> 3;
dst[o++] = (src[i+1] & 0x1F) << 3;
}
} else if(format == PIXFORMAT_YUV422) {
uint8_t y0, y1, u, v;
uint8_t r, g, b;
l = width * 2;
src += l * line;
for(i=0; i<l; i+=4) {
y0 = src[i];
u = src[i+1];
y1 = src[i+2];
v = src[i+3];
yuv2rgb(y0, u, v, &r, &g, &b);
dst[o++] = r;
dst[o++] = g;
dst[o++] = b;
yuv2rgb(y1, u, v, &r, &g, &b);
dst[o++] = r;
dst[o++] = g;
dst[o++] = b;
}
}
}
bool convert_image(uint8_t *src, uint16_t width, uint16_t height, pixformat_t format, uint8_t quality, jpge::output_stream *dst_stream)
{
int num_channels = 3;
jpge::subsampling_t subsampling = jpge::H2V2;
if(format == PIXFORMAT_GRAYSCALE) {
num_channels = 1;
subsampling = jpge::Y_ONLY;
}
if(!quality) {
quality = 1;
} else if(quality > 100) {
quality = 100;
}
jpge::params comp_params = jpge::params();
comp_params.m_subsampling = subsampling;
comp_params.m_quality = quality;
jpge::jpeg_encoder dst_image;
if (!dst_image.init(dst_stream, width, height, num_channels, comp_params)) {
ESP_LOGE(TAG, "JPG encoder init failed");
return false;
}
uint8_t* line = (uint8_t*)_malloc(width * num_channels);
if(!line) {
ESP_LOGE(TAG, "Scan line malloc failed");
return false;
}
for (int i = 0; i < height; i++) {
convert_line_format(src, format, line, width, num_channels, i);
if (!dst_image.process_scanline(line)) {
ESP_LOGE(TAG, "JPG process line %u failed", i);
free(line);
return false;
}
}
free(line);
if (!dst_image.process_scanline(NULL)) {
ESP_LOGE(TAG, "JPG image finish failed");
return false;
}
dst_image.deinit();
return true;
}
class callback_stream : public jpge::output_stream {
protected:
jpg_out_cb ocb;
void * oarg;
size_t index;
public:
callback_stream(jpg_out_cb cb, void * arg) : ocb(cb), oarg(arg), index(0) { }
virtual ~callback_stream() { }
virtual bool put_buf(const void* data, int len)
{
index += ocb(oarg, index, data, len);
return true;
}
virtual size_t get_size() const
{
return index;
}
};
bool fmt2jpg_cb(uint8_t *src, size_t src_len, uint16_t width, uint16_t height, pixformat_t format, uint8_t quality, jpg_out_cb cb, void * arg)
{
callback_stream dst_stream(cb, arg);
return convert_image(src, width, height, format, quality, &dst_stream);
}
bool frame2jpg_cb(camera_fb_t * fb, uint8_t quality, jpg_out_cb cb, void * arg)
{
return fmt2jpg_cb(fb->buf, fb->len, fb->width, fb->height, fb->format, quality, cb, arg);
}
class memory_stream : public jpge::output_stream {
protected:
uint8_t *out_buf;
size_t max_len, index;
public:
memory_stream(void *pBuf, uint buf_size) : out_buf(static_cast<uint8_t*>(pBuf)), max_len(buf_size), index(0) { }
virtual ~memory_stream() { }
virtual bool put_buf(const void* pBuf, int len)
{
if (!pBuf) {
//end of image
return true;
}
if ((size_t)len > (max_len - index)) {
ESP_LOGW(TAG, "JPG output overflow: %d bytes", len - (max_len - index));
len = max_len - index;
}
if (len) {
memcpy(out_buf + index, pBuf, len);
index += len;
}
return true;
}
virtual size_t get_size() const
{
return index;
}
};
bool fmt2jpg(uint8_t *src, size_t src_len, uint16_t width, uint16_t height, pixformat_t format, uint8_t quality, uint8_t ** out, size_t * out_len)
{
//todo: allocate proper buffer for holding JPEG data
//this should be enough for CIF frame size
int jpg_buf_len = 64*1024;
uint8_t * jpg_buf = (uint8_t *)_malloc(jpg_buf_len);
if(jpg_buf == NULL) {
ESP_LOGE(TAG, "JPG buffer malloc failed");
return false;
}
memory_stream dst_stream(jpg_buf, jpg_buf_len);
if(!convert_image(src, width, height, format, quality, &dst_stream)) {
free(jpg_buf);
return false;
}
*out = jpg_buf;
*out_len = dst_stream.get_size();
return true;
}
bool frame2jpg(camera_fb_t * fb, uint8_t quality, uint8_t ** out, size_t * out_len)
{
return fmt2jpg(fb->buf, fb->len, fb->width, fb->height, fb->format, quality, out, out_len);
}

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/*
si2c.c - Software I2C library for ESP31B
Copyright (c) 2015 Hristo Gochkov. All rights reserved.
This file is part of the ESP31B core for Arduino environment.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include <stdbool.h>
#include "twi.h"
#include "soc/gpio_reg.h"
#include "soc/gpio_struct.h"
#include "soc/io_mux_reg.h"
#include "driver/rtc_io.h"
#include <stdio.h>
#define LOW 0x0
#define HIGH 0x1
//GPIO FUNCTIONS
#define INPUT 0x01
#define OUTPUT 0x02
#define PULLUP 0x04
#define INPUT_PULLUP 0x05
#define PULLDOWN 0x08
#define INPUT_PULLDOWN 0x09
#define OPEN_DRAIN 0x10
#define OUTPUT_OPEN_DRAIN 0x12
#define SPECIAL 0xF0
#define FUNCTION_1 0x00
#define FUNCTION_2 0x20
#define FUNCTION_3 0x40
#define FUNCTION_4 0x60
#define FUNCTION_5 0x80
#define FUNCTION_6 0xA0
#define ESP_REG(addr) *((volatile uint32_t *)(addr))
const uint8_t pin_to_mux[40] = { 0x44, 0x88, 0x40, 0x84, 0x48, 0x6c, 0x60, 0x64, 0x68, 0x54, 0x58, 0x5c, 0x34, 0x38, 0x30, 0x3c, 0x4c, 0x50, 0x70, 0x74, 0x78, 0x7c, 0x80, 0x8c, 0, 0x24, 0x28, 0x2c, 0, 0, 0, 0, 0x1c, 0x20, 0x14, 0x18, 0x04, 0x08, 0x0c, 0x10};
static void pinMode(uint8_t pin, uint8_t mode)
{
if(pin >= 40) {
return;
}
uint32_t rtc_reg = rtc_gpio_desc[pin].reg;
//RTC pins PULL settings
if(rtc_reg) {
//lock rtc
ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].mux);
if(mode & PULLUP) {
ESP_REG(rtc_reg) = (ESP_REG(rtc_reg) | rtc_gpio_desc[pin].pullup) & ~(rtc_gpio_desc[pin].pulldown);
} else if(mode & PULLDOWN) {
ESP_REG(rtc_reg) = (ESP_REG(rtc_reg) | rtc_gpio_desc[pin].pulldown) & ~(rtc_gpio_desc[pin].pullup);
} else {
ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].pullup | rtc_gpio_desc[pin].pulldown);
}
//unlock rtc
}
uint32_t pinFunction = 0, pinControl = 0;
//lock gpio
if(mode & INPUT) {
if(pin < 32) {
GPIO.enable_w1tc = BIT(pin);
} else {
GPIO.enable1_w1tc.val = BIT(pin - 32);
}
} else if(mode & OUTPUT) {
if(pin > 33) {
//unlock gpio
return;//pins above 33 can be only inputs
} else if(pin < 32) {
GPIO.enable_w1ts = BIT(pin);
} else {
GPIO.enable1_w1ts.val = BIT(pin - 32);
}
}
if(mode & PULLUP) {
pinFunction |= FUN_PU;
} else if(mode & PULLDOWN) {
pinFunction |= FUN_PD;
}
pinFunction |= ((uint32_t)2 << FUN_DRV_S);//what are the drivers?
pinFunction |= FUN_IE;//input enable but required for output as well?
if(mode & (INPUT | OUTPUT)) {
pinFunction |= ((uint32_t)2 << MCU_SEL_S);
} else if(mode == SPECIAL) {
pinFunction |= ((uint32_t)(((pin)==1||(pin)==3)?0:1) << MCU_SEL_S);
} else {
pinFunction |= ((uint32_t)(mode >> 5) << MCU_SEL_S);
}
ESP_REG(DR_REG_IO_MUX_BASE + pin_to_mux[pin]) = pinFunction;
if(mode & OPEN_DRAIN) {
pinControl = (1 << GPIO_PIN0_PAD_DRIVER_S);
}
GPIO.pin[pin].val = pinControl;
//unlock gpio
}
static void digitalWrite(uint8_t pin, uint8_t val)
{
if(val) {
if(pin < 32) {
GPIO.out_w1ts = BIT(pin);
} else if(pin < 34) {
GPIO.out1_w1ts.val = BIT(pin - 32);
}
} else {
if(pin < 32) {
GPIO.out_w1tc = BIT(pin);
} else if(pin < 34) {
GPIO.out1_w1tc.val = BIT(pin - 32);
}
}
}
unsigned char twi_dcount = 18;
static unsigned char twi_sda, twi_scl;
static inline void SDA_LOW()
{
//Enable SDA (becomes output and since GPO is 0 for the pin,
// it will pull the line low)
if (twi_sda < 32) {
GPIO.enable_w1ts = BIT(twi_sda);
} else {
GPIO.enable1_w1ts.val = BIT(twi_sda - 32);
}
}
static inline void SDA_HIGH()
{
//Disable SDA (becomes input and since it has pullup it will go high)
if (twi_sda < 32) {
GPIO.enable_w1tc = BIT(twi_sda);
} else {
GPIO.enable1_w1tc.val = BIT(twi_sda - 32);
}
}
static inline uint32_t SDA_READ()
{
if (twi_sda < 32) {
return (GPIO.in & BIT(twi_sda)) != 0;
} else {
return (GPIO.in1.val & BIT(twi_sda - 32)) != 0;
}
}
static void SCL_LOW()
{
if (twi_scl < 32) {
GPIO.enable_w1ts = BIT(twi_scl);
} else {
GPIO.enable1_w1ts.val = BIT(twi_scl - 32);
}
}
static void SCL_HIGH()
{
if (twi_scl < 32) {
GPIO.enable_w1tc = BIT(twi_scl);
} else {
GPIO.enable1_w1tc.val = BIT(twi_scl - 32);
}
}
static uint32_t SCL_READ()
{
if (twi_scl < 32) {
return (GPIO.in & BIT(twi_scl)) != 0;
} else {
return (GPIO.in1.val & BIT(twi_scl - 32)) != 0;
}
}
#ifndef FCPU80
#define FCPU80 80000000L
#endif
#if F_CPU == FCPU80
#define TWI_CLOCK_STRETCH 800
#else
#define TWI_CLOCK_STRETCH 1600
#endif
void twi_setClock(unsigned int freq)
{
#if F_CPU == FCPU80
if(freq <= 100000) {
twi_dcount = 19; //about 100KHz
} else if(freq <= 200000) {
twi_dcount = 8; //about 200KHz
} else if(freq <= 300000) {
twi_dcount = 3; //about 300KHz
} else if(freq <= 400000) {
twi_dcount = 1; //about 400KHz
} else {
twi_dcount = 1; //about 400KHz
}
#else
if(freq <= 100000) {
twi_dcount = 32; //about 100KHz
} else if(freq <= 200000) {
twi_dcount = 14; //about 200KHz
} else if(freq <= 300000) {
twi_dcount = 8; //about 300KHz
} else if(freq <= 400000) {
twi_dcount = 5; //about 400KHz
} else if(freq <= 500000) {
twi_dcount = 3; //about 500KHz
} else if(freq <= 600000) {
twi_dcount = 2; //about 600KHz
} else {
twi_dcount = 1; //about 700KHz
}
#endif
}
void twi_init(unsigned char sda, unsigned char scl)
{
twi_sda = sda;
twi_scl = scl;
pinMode(twi_sda, OUTPUT);
pinMode(twi_scl, OUTPUT);
digitalWrite(twi_sda, 0);
digitalWrite(twi_scl, 0);
pinMode(twi_sda, INPUT_PULLUP);
pinMode(twi_scl, INPUT_PULLUP);
twi_setClock(100000);
}
void twi_stop(void)
{
pinMode(twi_sda, INPUT);
pinMode(twi_scl, INPUT);
}
static void twi_delay(unsigned char v)
{
unsigned int i;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
unsigned int reg;
for(i=0; i<v; i++) {
reg = REG_READ(GPIO_IN_REG);
}
#pragma GCC diagnostic pop
}
static bool twi_write_start(void)
{
SCL_HIGH();
SDA_HIGH();
if (SDA_READ() == 0) {
return false;
}
twi_delay(twi_dcount);
SDA_LOW();
twi_delay(twi_dcount);
return true;
}
static bool twi_write_stop(void)
{
unsigned int i = 0;
SCL_LOW();
SDA_LOW();
twi_delay(twi_dcount);
SCL_HIGH();
while (SCL_READ() == 0 && (i++) < TWI_CLOCK_STRETCH);// Clock stretching (up to 100us)
twi_delay(twi_dcount);
SDA_HIGH();
twi_delay(twi_dcount);
return true;
}
bool do_log = false;
static bool twi_write_bit(bool bit)
{
unsigned int i = 0;
SCL_LOW();
if (bit) {
SDA_HIGH();
if (do_log) {
twi_delay(twi_dcount+1);
}
} else {
SDA_LOW();
if (do_log) {}
}
twi_delay(twi_dcount+1);
SCL_HIGH();
while (SCL_READ() == 0 && (i++) < TWI_CLOCK_STRETCH);// Clock stretching (up to 100us)
twi_delay(twi_dcount);
return true;
}
static bool twi_read_bit(void)
{
unsigned int i = 0;
SCL_LOW();
SDA_HIGH();
twi_delay(twi_dcount+2);
SCL_HIGH();
while (SCL_READ() == 0 && (i++) < TWI_CLOCK_STRETCH);// Clock stretching (up to 100us)
bool bit = SDA_READ();
twi_delay(twi_dcount);
return bit;
}
static bool twi_write_byte(unsigned char byte)
{
if (byte == 0x43) {
// printf("TWB %02x ", (uint32_t) byte);
// do_log = true;
}
unsigned char bit;
for (bit = 0; bit < 8; bit++) {
twi_write_bit((byte & 0x80) != 0);
byte <<= 1;
}
if (do_log) {
printf("\n");
do_log = false;
}
return !twi_read_bit();//NACK/ACK
}
static unsigned char twi_read_byte(bool nack)
{
unsigned char byte = 0;
unsigned char bit;
for (bit = 0; bit < 8; bit++) {
byte = (byte << 1) | twi_read_bit();
}
twi_write_bit(nack);
return byte;
}
unsigned char twi_writeTo(unsigned char address, unsigned char * buf, unsigned int len, unsigned char sendStop)
{
unsigned int i;
if(!twi_write_start()) {
return 4; //line busy
}
if(!twi_write_byte(((address << 1) | 0) & 0xFF)) {
if (sendStop) {
twi_write_stop();
}
return 2; //received NACK on transmit of address
}
for(i=0; i<len; i++) {
if(!twi_write_byte(buf[i])) {
if (sendStop) {
twi_write_stop();
}
return 3;//received NACK on transmit of data
}
}
if(sendStop) {
twi_write_stop();
}
i = 0;
while(SDA_READ() == 0 && (i++) < 10) {
SCL_LOW();
twi_delay(twi_dcount);
SCL_HIGH();
twi_delay(twi_dcount);
}
return 0;
}
unsigned char twi_readFrom(unsigned char address, unsigned char* buf, unsigned int len, unsigned char sendStop)
{
unsigned int i;
if(!twi_write_start()) {
return 4; //line busy
}
if(!twi_write_byte(((address << 1) | 1) & 0xFF)) {
if (sendStop) {
twi_write_stop();
}
return 2;//received NACK on transmit of address
}
for(i=0; i<(len-1); i++) {
buf[i] = twi_read_byte(false);
}
buf[len-1] = twi_read_byte(true);
if(sendStop) {
twi_write_stop();
}
i = 0;
while(SDA_READ() == 0 && (i++) < 10) {
SCL_LOW();
twi_delay(twi_dcount);
SCL_HIGH();
twi_delay(twi_dcount);
}
return 0;
}

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esp32-cam/twi.h
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/*
twi.h - Software I2C library for ESP31B
Copyright (c) 2015 Hristo Gochkov. All rights reserved.
This file is part of the ESP31B core for Arduino environment.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef SI2C_h
#define SI2C_h
#ifdef __cplusplus
extern "C" {
#endif
void twi_init(unsigned char sda, unsigned char scl);
void twi_stop(void);
void twi_setClock(unsigned int freq);
uint8_t twi_writeTo(unsigned char address, unsigned char * buf, unsigned int len, unsigned char sendStop);
uint8_t twi_readFrom(unsigned char address, unsigned char * buf, unsigned int len, unsigned char sendStop);
#ifdef __cplusplus
}
#endif
#endif

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esp32-cam/xclk.c
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#include "driver/gpio.h"
#include "driver/ledc.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_system.h"
#include "xclk.h"
#if defined(ARDUINO_ARCH_ESP32) && defined(CONFIG_ARDUHAL_ESP_LOG)
#include "esp32-hal-log.h"
#else
#include "esp_log.h"
static const char* TAG = "camera_xclk";
#endif
esp_err_t xclk_timer_conf(int ledc_timer, int xclk_freq_hz)
{
ledc_timer_config_t timer_conf;
timer_conf.duty_resolution = 2;
timer_conf.freq_hz = xclk_freq_hz;
timer_conf.speed_mode = LEDC_HIGH_SPEED_MODE;
#if ESP_IDF_VERSION_MAJOR >= 4
timer_conf.clk_cfg = LEDC_AUTO_CLK;
#endif
timer_conf.timer_num = (ledc_timer_t)ledc_timer;
esp_err_t err = ledc_timer_config(&timer_conf);
if (err != ESP_OK) {
ESP_LOGE(TAG, "ledc_timer_config failed for freq %d, rc=%x", xclk_freq_hz, err);
}
return err;
}
esp_err_t camera_enable_out_clock(camera_config_t* config)
{
periph_module_enable(PERIPH_LEDC_MODULE);
esp_err_t err = xclk_timer_conf(config->ledc_timer, config->xclk_freq_hz);
if (err != ESP_OK) {
ESP_LOGE(TAG, "ledc_timer_config failed, rc=%x", err);
return err;
}
ledc_channel_config_t ch_conf;
ch_conf.gpio_num = config->pin_xclk;
ch_conf.speed_mode = LEDC_HIGH_SPEED_MODE;
ch_conf.channel = config->ledc_channel;
ch_conf.intr_type = LEDC_INTR_DISABLE;
ch_conf.timer_sel = config->ledc_timer;
ch_conf.duty = 2;
ch_conf.hpoint = 0;
err = ledc_channel_config(&ch_conf);
if (err != ESP_OK) {
ESP_LOGE(TAG, "ledc_channel_config failed, rc=%x", err);
return err;
}
return ESP_OK;
}
void camera_disable_out_clock()
{
periph_module_disable(PERIPH_LEDC_MODULE);
}

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esp32-cam/xclk.h
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#pragma once
#include "camera_common.h"
esp_err_t camera_enable_out_clock();
void camera_disable_out_clock();

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esp32-cam/yuv.c
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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "yuv.h"
#include "esp_attr.h"
typedef struct {
int16_t vY;
int16_t vVr;
int16_t vVg;
int16_t vUg;
int16_t vUb;
} yuv_table_row;
static const yuv_table_row yuv_table[256] = {
// Y Vr Vg Ug Ub // #
{ -18, -204, 50, 104, -258 }, // 0
{ -17, -202, 49, 103, -256 }, // 1
{ -16, -201, 49, 102, -254 }, // 2
{ -15, -199, 48, 101, -252 }, // 3
{ -13, -197, 48, 100, -250 }, // 4
{ -12, -196, 48, 99, -248 }, // 5
{ -11, -194, 47, 99, -246 }, // 6
{ -10, -193, 47, 98, -244 }, // 7
{ -9, -191, 46, 97, -242 }, // 8
{ -8, -189, 46, 96, -240 }, // 9
{ -6, -188, 46, 95, -238 }, // 10
{ -5, -186, 45, 95, -236 }, // 11
{ -4, -185, 45, 94, -234 }, // 12
{ -3, -183, 44, 93, -232 }, // 13
{ -2, -181, 44, 92, -230 }, // 14
{ -1, -180, 44, 91, -228 }, // 15
{ 0, -178, 43, 91, -226 }, // 16
{ 1, -177, 43, 90, -223 }, // 17
{ 2, -175, 43, 89, -221 }, // 18
{ 3, -173, 42, 88, -219 }, // 19
{ 4, -172, 42, 87, -217 }, // 20
{ 5, -170, 41, 86, -215 }, // 21
{ 6, -169, 41, 86, -213 }, // 22
{ 8, -167, 41, 85, -211 }, // 23
{ 9, -165, 40, 84, -209 }, // 24
{ 10, -164, 40, 83, -207 }, // 25
{ 11, -162, 39, 82, -205 }, // 26
{ 12, -161, 39, 82, -203 }, // 27
{ 13, -159, 39, 81, -201 }, // 28
{ 15, -158, 38, 80, -199 }, // 29
{ 16, -156, 38, 79, -197 }, // 30
{ 17, -154, 37, 78, -195 }, // 31
{ 18, -153, 37, 78, -193 }, // 32
{ 19, -151, 37, 77, -191 }, // 33
{ 20, -150, 36, 76, -189 }, // 34
{ 22, -148, 36, 75, -187 }, // 35
{ 23, -146, 35, 74, -185 }, // 36
{ 24, -145, 35, 73, -183 }, // 37
{ 25, -143, 35, 73, -181 }, // 38
{ 26, -142, 34, 72, -179 }, // 39
{ 27, -140, 34, 71, -177 }, // 40
{ 29, -138, 34, 70, -175 }, // 41
{ 30, -137, 33, 69, -173 }, // 42
{ 31, -135, 33, 69, -171 }, // 43
{ 32, -134, 32, 68, -169 }, // 44
{ 33, -132, 32, 67, -167 }, // 45
{ 34, -130, 32, 66, -165 }, // 46
{ 36, -129, 31, 65, -163 }, // 47
{ 37, -127, 31, 65, -161 }, // 48
{ 38, -126, 30, 64, -159 }, // 49
{ 39, -124, 30, 63, -157 }, // 50
{ 40, -122, 30, 62, -155 }, // 51
{ 41, -121, 29, 61, -153 }, // 52
{ 43, -119, 29, 60, -151 }, // 53
{ 44, -118, 28, 60, -149 }, // 54
{ 45, -116, 28, 59, -147 }, // 55
{ 46, -114, 28, 58, -145 }, // 56
{ 47, -113, 27, 57, -143 }, // 57
{ 48, -111, 27, 56, -141 }, // 58
{ 50, -110, 26, 56, -139 }, // 59
{ 51, -108, 26, 55, -137 }, // 60
{ 52, -106, 26, 54, -135 }, // 61
{ 53, -105, 25, 53, -133 }, // 62
{ 54, -103, 25, 52, -131 }, // 63
{ 55, -102, 25, 52, -129 }, // 64
{ 57, -100, 24, 51, -127 }, // 65
{ 58, -98, 24, 50, -125 }, // 66
{ 59, -97, 23, 49, -123 }, // 67
{ 60, -95, 23, 48, -121 }, // 68
{ 61, -94, 23, 47, -119 }, // 69
{ 62, -92, 22, 47, -117 }, // 70
{ 64, -90, 22, 46, -115 }, // 71
{ 65, -89, 21, 45, -113 }, // 72
{ 66, -87, 21, 44, -110 }, // 73
{ 67, -86, 21, 43, -108 }, // 74
{ 68, -84, 20, 43, -106 }, // 75
{ 69, -82, 20, 42, -104 }, // 76
{ 71, -81, 19, 41, -102 }, // 77
{ 72, -79, 19, 40, -100 }, // 78
{ 73, -78, 19, 39, -98 }, // 79
{ 74, -76, 18, 39, -96 }, // 80
{ 75, -75, 18, 38, -94 }, // 81
{ 76, -73, 17, 37, -92 }, // 82
{ 77, -71, 17, 36, -90 }, // 83
{ 79, -70, 17, 35, -88 }, // 84
{ 80, -68, 16, 34, -86 }, // 85
{ 81, -67, 16, 34, -84 }, // 86
{ 82, -65, 16, 33, -82 }, // 87
{ 83, -63, 15, 32, -80 }, // 88
{ 84, -62, 15, 31, -78 }, // 89
{ 86, -60, 14, 30, -76 }, // 90
{ 87, -59, 14, 30, -74 }, // 91
{ 88, -57, 14, 29, -72 }, // 92
{ 89, -55, 13, 28, -70 }, // 93
{ 90, -54, 13, 27, -68 }, // 94
{ 91, -52, 12, 26, -66 }, // 95
{ 93, -51, 12, 26, -64 }, // 96
{ 94, -49, 12, 25, -62 }, // 97
{ 95, -47, 11, 24, -60 }, // 98
{ 96, -46, 11, 23, -58 }, // 99
{ 97, -44, 10, 22, -56 }, // 100
{ 98, -43, 10, 21, -54 }, // 101
{ 100, -41, 10, 21, -52 }, // 102
{ 101, -39, 9, 20, -50 }, // 103
{ 102, -38, 9, 19, -48 }, // 104
{ 103, -36, 8, 18, -46 }, // 105
{ 104, -35, 8, 17, -44 }, // 106
{ 105, -33, 8, 17, -42 }, // 107
{ 107, -31, 7, 16, -40 }, // 108
{ 108, -30, 7, 15, -38 }, // 109
{ 109, -28, 7, 14, -36 }, // 110
{ 110, -27, 6, 13, -34 }, // 111
{ 111, -25, 6, 13, -32 }, // 112
{ 112, -23, 5, 12, -30 }, // 113
{ 114, -22, 5, 11, -28 }, // 114
{ 115, -20, 5, 10, -26 }, // 115
{ 116, -19, 4, 9, -24 }, // 116
{ 117, -17, 4, 8, -22 }, // 117
{ 118, -15, 3, 8, -20 }, // 118
{ 119, -14, 3, 7, -18 }, // 119
{ 121, -12, 3, 6, -16 }, // 120
{ 122, -11, 2, 5, -14 }, // 121
{ 123, -9, 2, 4, -12 }, // 122
{ 124, -7, 1, 4, -10 }, // 123
{ 125, -6, 1, 3, -8 }, // 124
{ 126, -4, 1, 2, -6 }, // 125
{ 128, -3, 0, 1, -4 }, // 126
{ 129, -1, 0, 0, -2 }, // 127
{ 130, 0, 0, 0, 0 }, // 128
{ 131, 1, 0, 0, 2 }, // 129
{ 132, 3, 0, -1, 4 }, // 130
{ 133, 4, -1, -2, 6 }, // 131
{ 135, 6, -1, -3, 8 }, // 132
{ 136, 7, -1, -4, 10 }, // 133
{ 137, 9, -2, -4, 12 }, // 134
{ 138, 11, -2, -5, 14 }, // 135
{ 139, 12, -3, -6, 16 }, // 136
{ 140, 14, -3, -7, 18 }, // 137
{ 142, 15, -3, -8, 20 }, // 138
{ 143, 17, -4, -8, 22 }, // 139
{ 144, 19, -4, -9, 24 }, // 140
{ 145, 20, -5, -10, 26 }, // 141
{ 146, 22, -5, -11, 28 }, // 142
{ 147, 23, -5, -12, 30 }, // 143
{ 148, 25, -6, -13, 32 }, // 144
{ 150, 27, -6, -13, 34 }, // 145
{ 151, 28, -7, -14, 36 }, // 146
{ 152, 30, -7, -15, 38 }, // 147
{ 153, 31, -7, -16, 40 }, // 148
{ 154, 33, -8, -17, 42 }, // 149
{ 155, 35, -8, -17, 44 }, // 150
{ 157, 36, -8, -18, 46 }, // 151
{ 158, 38, -9, -19, 48 }, // 152
{ 159, 39, -9, -20, 50 }, // 153
{ 160, 41, -10, -21, 52 }, // 154
{ 161, 43, -10, -21, 54 }, // 155
{ 162, 44, -10, -22, 56 }, // 156
{ 164, 46, -11, -23, 58 }, // 157
{ 165, 47, -11, -24, 60 }, // 158
{ 166, 49, -12, -25, 62 }, // 159
{ 167, 51, -12, -26, 64 }, // 160
{ 168, 52, -12, -26, 66 }, // 161
{ 169, 54, -13, -27, 68 }, // 162
{ 171, 55, -13, -28, 70 }, // 163
{ 172, 57, -14, -29, 72 }, // 164
{ 173, 59, -14, -30, 74 }, // 165
{ 174, 60, -14, -30, 76 }, // 166
{ 175, 62, -15, -31, 78 }, // 167
{ 176, 63, -15, -32, 80 }, // 168
{ 178, 65, -16, -33, 82 }, // 169
{ 179, 67, -16, -34, 84 }, // 170
{ 180, 68, -16, -34, 86 }, // 171
{ 181, 70, -17, -35, 88 }, // 172
{ 182, 71, -17, -36, 90 }, // 173
{ 183, 73, -17, -37, 92 }, // 174
{ 185, 75, -18, -38, 94 }, // 175
{ 186, 76, -18, -39, 96 }, // 176
{ 187, 78, -19, -39, 98 }, // 177
{ 188, 79, -19, -40, 100 }, // 178
{ 189, 81, -19, -41, 102 }, // 179
{ 190, 82, -20, -42, 104 }, // 180
{ 192, 84, -20, -43, 106 }, // 181
{ 193, 86, -21, -43, 108 }, // 182
{ 194, 87, -21, -44, 110 }, // 183
{ 195, 89, -21, -45, 113 }, // 184
{ 196, 90, -22, -46, 115 }, // 185
{ 197, 92, -22, -47, 117 }, // 186
{ 199, 94, -23, -47, 119 }, // 187
{ 200, 95, -23, -48, 121 }, // 188
{ 201, 97, -23, -49, 123 }, // 189
{ 202, 98, -24, -50, 125 }, // 190
{ 203, 100, -24, -51, 127 }, // 191
{ 204, 102, -25, -52, 129 }, // 192
{ 206, 103, -25, -52, 131 }, // 193
{ 207, 105, -25, -53, 133 }, // 194
{ 208, 106, -26, -54, 135 }, // 195
{ 209, 108, -26, -55, 137 }, // 196
{ 210, 110, -26, -56, 139 }, // 197
{ 211, 111, -27, -56, 141 }, // 198
{ 213, 113, -27, -57, 143 }, // 199
{ 214, 114, -28, -58, 145 }, // 200
{ 215, 116, -28, -59, 147 }, // 201
{ 216, 118, -28, -60, 149 }, // 202
{ 217, 119, -29, -60, 151 }, // 203
{ 218, 121, -29, -61, 153 }, // 204
{ 219, 122, -30, -62, 155 }, // 205
{ 221, 124, -30, -63, 157 }, // 206
{ 222, 126, -30, -64, 159 }, // 207
{ 223, 127, -31, -65, 161 }, // 208
{ 224, 129, -31, -65, 163 }, // 209
{ 225, 130, -32, -66, 165 }, // 210
{ 226, 132, -32, -67, 167 }, // 211
{ 228, 134, -32, -68, 169 }, // 212
{ 229, 135, -33, -69, 171 }, // 213
{ 230, 137, -33, -69, 173 }, // 214
{ 231, 138, -34, -70, 175 }, // 215
{ 232, 140, -34, -71, 177 }, // 216
{ 233, 142, -34, -72, 179 }, // 217
{ 235, 143, -35, -73, 181 }, // 218
{ 236, 145, -35, -73, 183 }, // 219
{ 237, 146, -35, -74, 185 }, // 220
{ 238, 148, -36, -75, 187 }, // 221
{ 239, 150, -36, -76, 189 }, // 222
{ 240, 151, -37, -77, 191 }, // 223
{ 242, 153, -37, -78, 193 }, // 224
{ 243, 154, -37, -78, 195 }, // 225
{ 244, 156, -38, -79, 197 }, // 226
{ 245, 158, -38, -80, 199 }, // 227
{ 246, 159, -39, -81, 201 }, // 228
{ 247, 161, -39, -82, 203 }, // 229
{ 249, 162, -39, -82, 205 }, // 230
{ 250, 164, -40, -83, 207 }, // 231
{ 251, 165, -40, -84, 209 }, // 232
{ 252, 167, -41, -85, 211 }, // 233
{ 253, 169, -41, -86, 213 }, // 234
{ 254, 170, -41, -86, 215 }, // 235
{ 256, 172, -42, -87, 217 }, // 236
{ 257, 173, -42, -88, 219 }, // 237
{ 258, 175, -43, -89, 221 }, // 238
{ 259, 177, -43, -90, 223 }, // 239
{ 260, 178, -43, -91, 226 }, // 240
{ 261, 180, -44, -91, 228 }, // 241
{ 263, 181, -44, -92, 230 }, // 242
{ 264, 183, -44, -93, 232 }, // 243
{ 265, 185, -45, -94, 234 }, // 244
{ 266, 186, -45, -95, 236 }, // 245
{ 267, 188, -46, -95, 238 }, // 246
{ 268, 189, -46, -96, 240 }, // 247
{ 270, 191, -46, -97, 242 }, // 248
{ 271, 193, -47, -98, 244 }, // 249
{ 272, 194, -47, -99, 246 }, // 250
{ 273, 196, -48, -99, 248 }, // 251
{ 274, 197, -48, -100, 250 }, // 252
{ 275, 199, -48, -101, 252 }, // 253
{ 277, 201, -49, -102, 254 }, // 254
{ 278, 202, -49, -103, 256 } // 255
};
#define YUYV_CONSTRAIN(v) ((v)<0)?0:(((v)>255)?255:(v))
void IRAM_ATTR yuv2rgb(uint8_t y, uint8_t u, uint8_t v, uint8_t *r, uint8_t *g, uint8_t *b)
{
int16_t ri, gi, bi;
ri = yuv_table[y].vY + yuv_table[v].vVr;
gi = yuv_table[y].vY + yuv_table[u].vUg + yuv_table[v].vVg;
bi = yuv_table[y].vY + yuv_table[u].vUb;
*r = YUYV_CONSTRAIN(ri);
*g = YUYV_CONSTRAIN(gi);
*b = YUYV_CONSTRAIN(bi);
}

29
esp32-cam/yuv.h
Unescape View File

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _CONVERSIONS_YUV_H_
#define _CONVERSIONS_YUV_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
void yuv2rgb(uint8_t y, uint8_t u, uint8_t v, uint8_t *r, uint8_t *g, uint8_t *b);
#ifdef __cplusplus
}
#endif
#endif /* _CONVERSIONS_YUV_H_ */
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