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esp32-mjpeg-multiclient-espcam-drivers
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esp32-mjpeg-multiclient-esp.../esp32-cam-rtos/esp_camera.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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "time.h"
#include "sys/time.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "esp_system.h"
#include "nvs_flash.h"
#include "nvs.h"
#include "sensor.h"
#include "sccb.h"
#include "cam_hal.h"
#include "esp_camera.h"
// #include "camera_common.h"
#include "xclk.h"
#if CONFIG_OV2640_SUPPORT
#include "ov2640.h"
#endif
#if CONFIG_OV7725_SUPPORT
#include "ov7725.h"
#endif
#if CONFIG_OV3660_SUPPORT
#include "ov3660.h"
#endif
#if CONFIG_OV5640_SUPPORT
#include "ov5640.h"
#endif
#if CONFIG_NT99141_SUPPORT
#include "nt99141.h"
#endif
#if CONFIG_OV7670_SUPPORT
#include "ov7670.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 = "camera";
#endif
typedef struct {
sensor_t sensor;
camera_fb_t fb;
} camera_state_t;
static const char* CAMERA_SENSOR_NVS_KEY = "sensor";
static const char* CAMERA_PIXFORMAT_NVS_KEY = "pixformat";
static camera_state_t *s_state = NULL;
#if CONFIG_IDF_TARGET_ESP32S3 // LCD_CAM module of ESP32-S3 will generate xclk
#define CAMERA_ENABLE_OUT_CLOCK(v)
#define CAMERA_DISABLE_OUT_CLOCK()
#else
#define CAMERA_ENABLE_OUT_CLOCK(v) camera_enable_out_clock((v))
#define CAMERA_DISABLE_OUT_CLOCK() camera_disable_out_clock()
#endif
static esp_err_t camera_probe(const camera_config_t *config, camera_model_t *out_camera_model)
{
*out_camera_model = CAMERA_NONE;
if (s_state != NULL) {
return ESP_ERR_INVALID_STATE;
}
s_state = (camera_state_t *) calloc(sizeof(camera_state_t), 1);
if (!s_state) {
return ESP_ERR_NO_MEM;
}
if (config->pin_xclk >= 0) {
ESP_LOGD(TAG, "Enabling XCLK output");
CAMERA_ENABLE_OUT_CLOCK(config);
}
if (config->pin_sscb_sda != -1) {
ESP_LOGD(TAG, "Initializing SSCB");
SCCB_Init(config->pin_sscb_sda, config->pin_sscb_scl);
}
if (config->pin_pwdn >= 0) {
ESP_LOGD(TAG, "Resetting camera by power down line");
gpio_config_t conf = { 0 };
conf.pin_bit_mask = 1LL << config->pin_pwdn;
conf.mode = GPIO_MODE_OUTPUT;
gpio_config(&conf);
// carefull, logic is inverted compared to reset pin
gpio_set_level(config->pin_pwdn, 1);
vTaskDelay(10 / portTICK_PERIOD_MS);
gpio_set_level(config->pin_pwdn, 0);
vTaskDelay(10 / portTICK_PERIOD_MS);
}
if (config->pin_reset >= 0) {
ESP_LOGD(TAG, "Resetting camera");
gpio_config_t conf = { 0 };
conf.pin_bit_mask = 1LL << config->pin_reset;
conf.mode = GPIO_MODE_OUTPUT;
gpio_config(&conf);
gpio_set_level(config->pin_reset, 0);
vTaskDelay(10 / portTICK_PERIOD_MS);
gpio_set_level(config->pin_reset, 1);
vTaskDelay(10 / portTICK_PERIOD_MS);
}
ESP_LOGD(TAG, "Searching for camera address");
vTaskDelay(10 / portTICK_PERIOD_MS);
uint8_t slv_addr = SCCB_Probe();
if (slv_addr == 0) {
CAMERA_DISABLE_OUT_CLOCK();
return ESP_ERR_NOT_FOUND;
}
ESP_LOGI(TAG, "Detected camera at address=0x%02x", slv_addr);
s_state->sensor.slv_addr = slv_addr;
s_state->sensor.xclk_freq_hz = config->xclk_freq_hz;
/**
* Read sensor ID
*/
sensor_id_t *id = &s_state->sensor.id;
if (slv_addr == OV2640_SCCB_ADDR || slv_addr == OV7725_SCCB_ADDR) {
SCCB_Write(slv_addr, 0xFF, 0x01);//bank sensor
id->PID = SCCB_Read(slv_addr, REG_PID);
id->VER = SCCB_Read(slv_addr, REG_VER);
id->MIDL = SCCB_Read(slv_addr, REG_MIDL);
id->MIDH = SCCB_Read(slv_addr, REG_MIDH);
} else if (slv_addr == OV5640_SCCB_ADDR || slv_addr == OV3660_SCCB_ADDR) {
id->PID = SCCB_Read16(slv_addr, REG16_CHIDH);
id->VER = SCCB_Read16(slv_addr, REG16_CHIDL);
} else if (slv_addr == NT99141_SCCB_ADDR) {
SCCB_Write16(slv_addr, 0x3008, 0x01);//bank sensor
id->PID = SCCB_Read16(slv_addr, 0x3000);
id->VER = SCCB_Read16(slv_addr, 0x3001);
if (config->xclk_freq_hz > 10000000) {
ESP_LOGE(TAG, "NT99141: only XCLK under 10MHz is supported, and XCLK is now set to 10M");
s_state->sensor.xclk_freq_hz = 10000000;
}
}
vTaskDelay(10 / portTICK_PERIOD_MS);
ESP_LOGI(TAG, "Camera PID=0x%02x VER=0x%02x MIDL=0x%02x MIDH=0x%02x",
id->PID, id->VER, id->MIDH, id->MIDL);
/**
* Initialize sensor according to sensor ID
*/
switch (id->PID) {
#if CONFIG_OV2640_SUPPORT
case OV2640_PID:
*out_camera_model = CAMERA_OV2640;
ov2640_init(&s_state->sensor);
break;
#endif
#if CONFIG_OV7725_SUPPORT
case OV7725_PID:
*out_camera_model = CAMERA_OV7725;
ov7725_init(&s_state->sensor);
break;
#endif
#if CONFIG_OV3660_SUPPORT
case OV3660_PID:
*out_camera_model = CAMERA_OV3660;
ov3660_init(&s_state->sensor);
break;
#endif
#if CONFIG_OV5640_SUPPORT
case OV5640_PID:
*out_camera_model = CAMERA_OV5640;
ov5640_init(&s_state->sensor);
break;
#endif
#if CONFIG_OV7670_SUPPORT
case OV7670_PID:
*out_camera_model = CAMERA_OV7670;
ov7670_init(&s_state->sensor);
break;
#endif
#if CONFIG_NT99141_SUPPORT
case NT99141_PID:
*out_camera_model = CAMERA_NT99141;
NT99141_init(&s_state->sensor);
break;
#endif
default:
id->PID = 0;
CAMERA_DISABLE_OUT_CLOCK();
ESP_LOGE(TAG, "Detected camera not supported.");
return ESP_ERR_NOT_SUPPORTED;
}
ESP_LOGD(TAG, "Doing SW reset of sensor");
s_state->sensor.reset(&s_state->sensor);
return ESP_OK;
}
esp_err_t esp_camera_init(const camera_config_t *config)
{
esp_err_t err;
err = cam_init(config);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Camera init failed with error 0x%x", err);
return err;
}
camera_model_t camera_model = CAMERA_NONE;
err = camera_probe(config, &camera_model);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Camera probe failed with error 0x%x(%s)", err, esp_err_to_name(err));
goto fail;
}
if (camera_model == CAMERA_OV7725) {
ESP_LOGI(TAG, "Detected OV7725 camera");
} else if (camera_model == CAMERA_OV2640) {
ESP_LOGI(TAG, "Detected OV2640 camera");
} else if (camera_model == CAMERA_OV3660) {
ESP_LOGI(TAG, "Detected OV3660 camera");
} else if (camera_model == CAMERA_OV5640) {
ESP_LOGI(TAG, "Detected OV5640 camera");
} else if (camera_model == CAMERA_OV7670) {
ESP_LOGI(TAG, "Detected OV7670 camera");
} else if (camera_model == CAMERA_NT99141) {
ESP_LOGI(TAG, "Detected NT99141 camera");
} else {
ESP_LOGI(TAG, "Camera not supported");
err = ESP_ERR_CAMERA_NOT_SUPPORTED;
goto fail;
}
framesize_t frame_size = (framesize_t) config->frame_size;
pixformat_t pix_format = (pixformat_t) config->pixel_format;
if (frame_size > camera_sensor[camera_model].max_size) {
frame_size = camera_sensor[camera_model].max_size;
}
err = cam_config(config, frame_size, s_state->sensor.id.PID);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Camera config failed with error 0x%x", err);
goto fail;
}
s_state->sensor.status.framesize = frame_size;
s_state->sensor.pixformat = pix_format;
// ESP_LOGD(TAG, "Setting frame size to %dx%d", s_state->width, s_state->height);
if (s_state->sensor.set_framesize(&s_state->sensor, frame_size) != 0) {
ESP_LOGE(TAG, "Failed to set frame size");
err = ESP_ERR_CAMERA_FAILED_TO_SET_FRAME_SIZE;
goto fail;
}
s_state->sensor.set_pixformat(&s_state->sensor, pix_format);
if (s_state->sensor.id.PID == OV2640_PID) {
s_state->sensor.set_gainceiling(&s_state->sensor, GAINCEILING_2X);
s_state->sensor.set_bpc(&s_state->sensor, false);
s_state->sensor.set_wpc(&s_state->sensor, true);
s_state->sensor.set_lenc(&s_state->sensor, true);
}
if (pix_format == PIXFORMAT_JPEG) {
(*s_state->sensor.set_quality)(&s_state->sensor, config->jpeg_quality);
}
s_state->sensor.init_status(&s_state->sensor);
cam_start();
return ESP_OK;
fail:
CAMERA_DISABLE_OUT_CLOCK();
return err;
}
esp_err_t esp_camera_deinit()
{
esp_err_t ret = cam_deinit();
if (s_state) {
SCCB_Deinit();
free(s_state);
s_state = NULL;
}
return ret;
}
#define FB_GET_TIMEOUT (4000 / portTICK_PERIOD_MS)
camera_fb_t *esp_camera_fb_get()
{
if (s_state == NULL) {
return NULL;
}
camera_fb_t *fb = cam_take(FB_GET_TIMEOUT);
//set the frame properties
if (fb) {
fb->width = resolution[s_state->sensor.status.framesize].width;
fb->height = resolution[s_state->sensor.status.framesize].height;
fb->format = s_state->sensor.pixformat;
}
return fb;
}
void esp_camera_fb_return(camera_fb_t *fb)
{
if (s_state == NULL) {
return;
}
cam_give(fb);
}
sensor_t *esp_camera_sensor_get()
{
if (s_state == NULL) {
return NULL;
}
return &s_state->sensor;
}
esp_err_t esp_camera_save_to_nvs(const char *key)
{
#if ESP_IDF_VERSION_MAJOR > 3
nvs_handle_t handle;
#else
nvs_handle handle;
#endif
esp_err_t ret = nvs_open(key,NVS_READWRITE,&handle);
if (ret == ESP_OK) {
sensor_t *s = esp_camera_sensor_get();
if (s != NULL) {
ret = nvs_set_blob(handle,CAMERA_SENSOR_NVS_KEY,&s->status,sizeof(camera_status_t));
if (ret == ESP_OK) {
uint8_t pf = s->pixformat;
ret = nvs_set_u8(handle,CAMERA_PIXFORMAT_NVS_KEY,pf);
}
return ret;
} else {
return ESP_ERR_CAMERA_NOT_DETECTED;
}
nvs_close(handle);
return ret;
} else {
return ret;
}
}
esp_err_t esp_camera_load_from_nvs(const char *key)
{
#if ESP_IDF_VERSION_MAJOR > 3
nvs_handle_t handle;
#else
nvs_handle handle;
#endif
uint8_t pf;
esp_err_t ret = nvs_open(key,NVS_READWRITE,&handle);
if (ret == ESP_OK) {
sensor_t *s = esp_camera_sensor_get();
camera_status_t st;
if (s != NULL) {
size_t size = sizeof(camera_status_t);
ret = nvs_get_blob(handle,CAMERA_SENSOR_NVS_KEY,&st,&size);
if (ret == ESP_OK) {
s->set_ae_level(s,st.ae_level);
s->set_aec2(s,st.aec2);
s->set_aec_value(s,st.aec_value);
s->set_agc_gain(s,st.agc_gain);
s->set_awb_gain(s,st.awb_gain);
s->set_bpc(s,st.bpc);
s->set_brightness(s,st.brightness);
s->set_colorbar(s,st.colorbar);
s->set_contrast(s,st.contrast);
s->set_dcw(s,st.dcw);
s->set_denoise(s,st.denoise);
s->set_exposure_ctrl(s,st.aec);
s->set_framesize(s,st.framesize);
s->set_gain_ctrl(s,st.agc);
s->set_gainceiling(s,st.gainceiling);
s->set_hmirror(s,st.hmirror);
s->set_lenc(s,st.lenc);
s->set_quality(s,st.quality);
s->set_raw_gma(s,st.raw_gma);
s->set_saturation(s,st.saturation);
s->set_sharpness(s,st.sharpness);
s->set_special_effect(s,st.special_effect);
s->set_vflip(s,st.vflip);
s->set_wb_mode(s,st.wb_mode);
s->set_whitebal(s,st.awb);
s->set_wpc(s,st.wpc);
}
ret = nvs_get_u8(handle,CAMERA_PIXFORMAT_NVS_KEY,&pf);
if (ret == ESP_OK) {
s->set_pixformat(s,pf);
}
} else {
return ESP_ERR_CAMERA_NOT_DETECTED;
}
nvs_close(handle);
return ret;
} else {
ESP_LOGW(TAG,"Error (%d) opening nvs key \"%s\"",ret,key);
return ret;
}
}
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