Update

code/components/jomjol_controlcamera/ClassControllCamera.cpp

@@ -136,18 +136,34 @@ static size_t jpg_encode_stream(void * arg, size_t index, const void* data, size
     return len;
 }
 
-void CCamera::SetBrightnessContrastSaturation(int _brightness, int _contrast, int _saturation)
+bool CCamera::SetBrightnessContrastSaturation(int _brightness, int _contrast, int _saturation)
 {
+    bool result = false;
     sensor_t * s = esp_camera_sensor_get(); 
     _brightness = min(2, max(-2, _brightness));
-//    _contrast = min(2, max(-2, _contrast));
+    _contrast = min(2, max(-2, _contrast));
 //    _saturation = min(2, max(-2, _saturation));
 
 //    s->set_saturation(s, _saturation);
-//    s->set_contrast(s, _contrast);
+    s->set_contrast(s, _contrast);
     s->set_brightness(s, _brightness);
-}
 
+    if (_brightness != brightness)
+        result = true;
+    if (_contrast != contrast)
+        result = true;
+    if (_saturation != saturation)
+        result = true;
+    
+    brightness = _brightness;
+    contrast = _contrast;
+    saturation = _saturation;
+
+    if (result && isFixedExposure)
+        EnableAutoExposure(waitbeforepicture_org);
+
+    return result;
+}
 
 
 void CCamera::SetQualitySize(int qual, framesize_t resol)
@@ -194,6 +210,31 @@ void CCamera::SetQualitySize(int qual, framesize_t resol)
 }
 
 
+void CCamera::EnableAutoExposure(int flashdauer)
+{
+    LEDOnOff(true);
+    LightOnOff(true);
+    const TickType_t xDelay = flashdauer / portTICK_PERIOD_MS;
+    vTaskDelay( xDelay );
+
+    camera_fb_t * fb = esp_camera_fb_get();
+    if (!fb) {
+        ESP_LOGE(TAGCAMERACLASS, "Camera Capture Failed");
+    }
+    esp_camera_fb_return(fb);        
+
+    sensor_t * s = esp_camera_sensor_get(); 
+    s->set_gain_ctrl(s, 0);
+    s->set_exposure_ctrl(s, 0);
+
+
+    LEDOnOff(false);  
+    LightOnOff(false);
+    isFixedExposure = true;
+    waitbeforepicture_org = flashdauer;
+}
+
+
 
 esp_err_t CCamera::CaptureToBasisImage(CImageBasis *_Image, int delay)
 {
@@ -236,7 +277,7 @@ esp_err_t CCamera::CaptureToBasisImage(CImageBasis *_Image, int delay)
     LogFile.WriteHeapInfo("CCamera::CaptureToBasisImage - After fb_get");
 #endif
 
-    LEDOnOff(false);    
+    LEDOnOff(false);  
 
     if (delay > 0) 
         LightOnOff(false);
@@ -526,6 +567,10 @@ CCamera::CCamera()
 #ifdef DEBUG_DETAIL_ON    
     printf("CreateClassCamera\n");
 #endif
+    brightness = -5;
+    contrast = -5;
+    saturation = -5;
+    isFixedExposure = false;
 }
 
 esp_err_t CCamera::InitCam()

code/components/jomjol_controlcamera/ClassControllCamera.h

@@ -23,6 +23,9 @@ class CCamera {
     protected:
         int ActualQuality;
         framesize_t ActualResolution;
+        int brightness, contrast, saturation;
+        bool isFixedExposure;
+        int waitbeforepicture_org;
 
     public:
         int image_height, image_width;
@@ -34,9 +37,12 @@ class CCamera {
         void LEDOnOff(bool status);
         esp_err_t CaptureToHTTP(httpd_req_t *req, int delay = 0);
         void SetQualitySize(int qual, framesize_t resol);
-        void SetBrightnessContrastSaturation(int _brightness, int _contrast, int _saturation);
+        bool SetBrightnessContrastSaturation(int _brightness, int _contrast, int _saturation);
         void GetCameraParameter(httpd_req_t *req, int &qual, framesize_t &resol);
 
+        void EnableAutoExposure(int flashdauer);
+        
+
         framesize_t TextToFramesize(const char * text);
 
         esp_err_t CaptureToFile(std::string nm, int delay = 0);

code/components/jomjol_flowcontroll/ClassFlowMakeImage.cpp

@@ -34,6 +34,7 @@ void ClassFlowMakeImage::SetInitialParameter(void)
     ImageSize = FRAMESIZE_VGA;
     SaveAllFiles = false;
     disabled = false;
+    FixedExposure = false;
     namerawimage =  "/sdcard/img_tmp/raw.jpg";
 }     
 
@@ -97,6 +98,11 @@ bool ClassFlowMakeImage::ReadParameter(FILE* pfile, string& aktparamgraph)
             _saturation = stoi(zerlegt[1]);
         }
 
+        if ((toUpper(zerlegt[0]) == "FIXEDEXPOSURE") && (zerlegt.size() > 1))
+        {
+            if (toUpper(zerlegt[1]) == "TRUE")
+                FixedExposure = true;
+        }
     }
 
     Camera.SetBrightnessContrastSaturation(_brightness, _contrast, _saturation);
@@ -107,6 +113,18 @@ bool ClassFlowMakeImage::ReadParameter(FILE* pfile, string& aktparamgraph)
     rawImage = new CImageBasis();
     rawImage->CreateEmptyImage(image_width, image_height, 3);
 
+    waitbeforepicture_store = waitbeforepicture;
+    if (FixedExposure)
+    {
+        printf("Fixed Exposure enabled!\n");
+        int flashdauer = (int) (waitbeforepicture * 1000);
+        Camera.EnableAutoExposure(flashdauer);
+        waitbeforepicture = 0.2;
+//        flashdauer = (int) (waitbeforepicture * 1000);
+//        takePictureWithFlash(flashdauer);
+//        rawImage->SaveToFile("/sdcard/init2.jpg");
+    }
+
     return true;
 }
 
@@ -121,7 +139,7 @@ bool ClassFlowMakeImage::doFlow(string zwtime)
 {
     string logPath = CreateLogFolder(zwtime);
 
-    int flashdauer = (int) waitbeforepicture * 1000;
+    int flashdauer = (int) (waitbeforepicture * 1000);
  
  #ifdef DEBUG_DETAIL_ON  
     LogFile.WriteHeapInfo("ClassFlowMakeImage::doFlow - Before takePictureWithFlash");
@@ -146,7 +164,7 @@ bool ClassFlowMakeImage::doFlow(string zwtime)
 
 esp_err_t ClassFlowMakeImage::SendRawJPG(httpd_req_t *req)
 {
-    int flashdauer = (int) waitbeforepicture * 1000;
+    int flashdauer = (int) (waitbeforepicture * 1000);
     return Camera.CaptureToHTTP(req, flashdauer);
 }
 
@@ -155,7 +173,7 @@ ImageData* ClassFlowMakeImage::SendRawImage()
 {
     CImageBasis *zw = new CImageBasis(rawImage);
     ImageData *id;
-    int flashdauer = (int) waitbeforepicture * 1000;
+    int flashdauer = (int) (waitbeforepicture * 1000);
     Camera.CaptureToBasisImage(zw, flashdauer);
     id = zw->writeToMemoryAsJPG();    
     delete zw;

code/components/jomjol_flowcontroll/ClassFlowMakeImage.h

@@ -15,6 +15,7 @@ class ClassFlowMakeImage :
 {
 protected:
     float waitbeforepicture;
+    float waitbeforepicture_store;
     framesize_t ImageSize;
     bool isImageSize;
     int ImageQuality;
@@ -22,6 +23,8 @@ protected:
     string namerawimage;
     int image_height, image_width;
     bool SaveAllFiles;
+    bool FixedExposure;
+
 
 
     void CopyFile(string input, string output);
@@ -29,6 +32,7 @@ protected:
     esp_err_t camera_capture();
     void takePictureWithFlash(int flashdauer);
 
+
     void SetInitialParameter(void);       
 
 public:

code/components/jomjol_tfliteclass/server_tflite.cpp

@@ -429,7 +429,7 @@ esp_err_t handler_editflow(httpd_req_t *req)
 
 //        printf("Parameter host: "); printf(_host.c_str()); printf("\n"); 
 //        string zwzw = "Do " + _task + " start\n"; printf(zwzw.c_str());
-        Camera.SetBrightnessContrastSaturation(bri, con, sat);
+        bool changed = Camera.SetBrightnessContrastSaturation(bri, con, sat);
         std::string zw = tfliteflow.doSingleStep("[MakeImage]", _host);
         httpd_resp_sendstr_chunk(req, zw.c_str()); 
     }