AI-on-the-edge-device/code/components/jomjol_controlcamera/server_camera.cpp

#include "server_camera.h"

#include <string>
#include "string.h"

#include "esp_camera.h"
#include "ClassControllCamera.h"

#include "ClassLogFile.h"
#include "esp_log.h"

static const char *TAG = "server_cam";

#define SCRATCH_BUFSIZE2  8192 
char scratch2[SCRATCH_BUFSIZE2];

//#define DEBUG_DETAIL_ON   


void PowerResetCamera()
{
        ESP_LOGD(TAG, "Resetting camera by power down line");
        gpio_config_t conf;
        conf.intr_type = GPIO_INTR_DISABLE;
        conf.pin_bit_mask = 1LL << GPIO_NUM_32;
        conf.mode = GPIO_MODE_OUTPUT;
        conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
        conf.pull_up_en = GPIO_PULLUP_DISABLE;
        gpio_config(&conf);

        // carefull, logic is inverted compared to reset pin
        gpio_set_level(GPIO_NUM_32, 1);
        vTaskDelay(1000 / portTICK_PERIOD_MS);
        gpio_set_level(GPIO_NUM_32, 0);
        vTaskDelay(1000 / portTICK_PERIOD_MS);
}


esp_err_t handler_lightOn(httpd_req_t *req)
{
    #ifdef DEBUG_DETAIL_ON   
        LogFile.WriteHeapInfo("handler_lightOn - Start");
        ESP_LOGD(TAG, "handler_lightOn uri: %s", req->uri);
    #endif

    if (Camera.getCameraInitSuccessful()) 
    {
        Camera.LightOnOff(true);
        const char* resp_str = (const char*) req->user_ctx;
        httpd_resp_send(req, resp_str, strlen(resp_str));
    }
    else 
    {
        httpd_resp_send_err(req, HTTPD_403_FORBIDDEN, "Camera Light On API not yet initialized. Please retry later...");
        return ESP_ERR_NOT_FOUND;
    }

    #ifdef DEBUG_DETAIL_ON   
        LogFile.WriteHeapInfo("handler_lightOn - Done");
    #endif

    return ESP_OK;
}


esp_err_t handler_lightOff(httpd_req_t *req)
{
    #ifdef DEBUG_DETAIL_ON   
        LogFile.WriteHeapInfo("handler_lightOff - Start");
        ESP_LOGD(TAG, "handler_lightOff uri: %s", req->uri);
    #endif

    if (Camera.getCameraInitSuccessful()) 
    {
        Camera.LightOnOff(false);
        const char* resp_str = (const char*) req->user_ctx;
        httpd_resp_send(req, resp_str, strlen(resp_str));       
    }
    else 
    {
        httpd_resp_send_err(req, HTTPD_403_FORBIDDEN, "Camera Light Off API not yet initialized. Please retry later...");
        return ESP_ERR_NOT_FOUND;
    }

    #ifdef DEBUG_DETAIL_ON   
        LogFile.WriteHeapInfo("handler_lightOff - Done");
    #endif

    return ESP_OK;
}


esp_err_t handler_capture(httpd_req_t *req)
{
    #ifdef DEBUG_DETAIL_ON   
        LogFile.WriteHeapInfo("handler_capture - Start");
    #endif

    if (Camera.getCameraInitSuccessful()) 
    {
        int quality;
        framesize_t res;

        Camera.GetCameraParameter(req, quality, res);

        #ifdef DEBUG_DETAIL_ON   
            ESP_LOGD(TAG, "Size: %d, Quality: %d", res, quality);
        #endif

        Camera.SetQualitySize(quality, res);

        esp_err_t result;
        result = Camera.CaptureToHTTP(req);

        #ifdef DEBUG_DETAIL_ON   
            LogFile.WriteHeapInfo("handler_capture - Done");
        #endif

        return result;
    }
        else 
    {
        httpd_resp_send_err(req, HTTPD_403_FORBIDDEN, "Camera Capture API not yet initialized. Please retry later...");
        return ESP_ERR_NOT_FOUND;
    }
}


esp_err_t handler_capture_with_ligth(httpd_req_t *req)
{
    #ifdef DEBUG_DETAIL_ON  
        LogFile.WriteHeapInfo("handler_capture_with_ligth - Start");
    #endif
    
    if (Camera.getCameraInitSuccessful()) 
    {
        char _query[100];
        char _delay[10];

        int quality;
        framesize_t res;    
        int delay = 2500;

        if (httpd_req_get_url_query_str(req, _query, 100) == ESP_OK)
        {
            ESP_LOGD(TAG, "Query: %s", _query);
            if (httpd_query_key_value(_query, "delay", _delay, 10) == ESP_OK)
            {
                #ifdef DEBUG_DETAIL_ON   
                    ESP_LOGD(TAG, "Delay: %s", _delay);
                #endif        
                delay = atoi(_delay);

                if (delay < 0)
                    delay = 0;
            }
        }

        Camera.GetCameraParameter(req, quality, res);

        #ifdef DEBUG_DETAIL_ON   
            ESP_LOGD(TAG, "Size: %d, Quality: %d", res, quality);
        #endif

        Camera.SetQualitySize(quality, res);
        Camera.LightOnOff(true);
        const TickType_t xDelay = delay / portTICK_PERIOD_MS;
        vTaskDelay( xDelay );

        esp_err_t result;
        result = Camera.CaptureToHTTP(req);  

        Camera.LightOnOff(false);

        #ifdef DEBUG_DETAIL_ON   
            LogFile.WriteHeapInfo("handler_capture_with_ligth - Done");
        #endif

        return result;
    }
        else 
    {
        httpd_resp_send_err(req, HTTPD_403_FORBIDDEN, "Camera Capture + flashlight API not yet initialized. Please retry later...");
        return ESP_ERR_NOT_FOUND;
    }
}


esp_err_t handler_capture_save_to_file(httpd_req_t *req)
{
    #ifdef DEBUG_DETAIL_ON   
        LogFile.WriteHeapInfo("handler_capture_save_to_file - Start");
    #endif

    if (Camera.getCameraInitSuccessful()) 
    {
        char _query[100];
        char _delay[10];
        int delay = 0;
        char filename[100];
        std::string fn = "/sdcard/";


        int quality;
        framesize_t res;    

        if (httpd_req_get_url_query_str(req, _query, 100) == ESP_OK)
        {
            ESP_LOGD(TAG, "Query: %s", _query);
            if (httpd_query_key_value(_query, "filename", filename, 100) == ESP_OK)
            {
                fn.append(filename);
                #ifdef DEBUG_DETAIL_ON   
                    ESP_LOGD(TAG, "Filename: %s", fn.c_str());
                #endif
            }
            else
                fn.append("noname.jpg");

            if (httpd_query_key_value(_query, "delay", _delay, 10) == ESP_OK)
            {
                #ifdef DEBUG_DETAIL_ON   
                    ESP_LOGD(TAG, "Delay: %s", _delay);
                #endif
                delay = atoi(_delay);

                if (delay < 0)
                    delay = 0;
            }
        }
        else
            fn.append("noname.jpg");

        Camera.GetCameraParameter(req, quality, res);
        #ifdef DEBUG_DETAIL_ON   
            ESP_LOGD(TAG, "Size: %d, Quality: %d", res, quality);
        #endif
        Camera.SetQualitySize(quality, res);

        esp_err_t result;
        result = Camera.CaptureToFile(fn, delay);  

        const char* resp_str = (const char*) fn.c_str();
        httpd_resp_send(req, resp_str, strlen(resp_str));

        #ifdef DEBUG_DETAIL_ON   
            LogFile.WriteHeapInfo("handler_capture_save_to_file - Done");
        #endif

        return result;
    }
    else 
    {
        httpd_resp_send_err(req, HTTPD_403_FORBIDDEN, "Camera Capture + save API not yet initialized. Please retry later...");
        return ESP_ERR_NOT_FOUND;
    }
}


void register_server_camera_uri(httpd_handle_t server)
{
#ifdef DEBUG_DETAIL_ON   
    ESP_LOGI(TAG, "server_part_camera - Registering URI handlers");
#endif

    httpd_uri_t camuri = { };
    camuri.method    = HTTP_GET;

    camuri.uri       = "/lighton";
    camuri.handler   = handler_lightOn;
    camuri.user_ctx  = (void*) "Light On";    
    httpd_register_uri_handler(server, &camuri);

    camuri.uri       = "/lightoff";
    camuri.handler   = handler_lightOff;
    camuri.user_ctx  = (void*) "Light Off"; 
    httpd_register_uri_handler(server, &camuri);    

    camuri.uri       = "/capture";
    camuri.handler   = handler_capture;
    camuri.user_ctx  = NULL; 
    httpd_register_uri_handler(server, &camuri);      

    camuri.uri       = "/capture_with_flashlight";
    camuri.handler   = handler_capture_with_ligth;
    camuri.user_ctx  = NULL; 
    httpd_register_uri_handler(server, &camuri);  

    camuri.uri       = "/save";
    camuri.handler   = handler_capture_save_to_file;
    camuri.user_ctx  = NULL; 
    httpd_register_uri_handler(server, &camuri);    
}