videoio: drop VideoCaptureModes enum in favour of fourcc

modules/videoio/include/opencv2/videoio.hpp

@@ -178,17 +178,6 @@ enum VideoCaptureProperties {
 #endif
      };
 
-
-/** @brief Generic camera output modes identifier.
-@note Currently, these are supported through the libv4l backend only.
-*/
-enum VideoCaptureModes {
-       CAP_MODE_BGR  = 0, //!< BGR24 (default)
-       CAP_MODE_RGB  = 1, //!< RGB24
-       CAP_MODE_GRAY = 2, //!< Y8
-       CAP_MODE_YUYV = 3  //!< YUYV
-     };
-
 /** @brief %VideoWriter generic properties identifier.
  @sa VideoWriter::get(), VideoWriter::set()
 */

modules/videoio/include/opencv2/videoio/videoio_c.h

@@ -452,16 +452,6 @@ enum
     CV_CAP_INTELPERC_GENERATORS_MASK = CV_CAP_INTELPERC_DEPTH_GENERATOR + CV_CAP_INTELPERC_IMAGE_GENERATOR
 };
 
-// Generic camera output modes.
-// Currently, these are supported through the libv4l interface only.
-enum
-{
-    CV_CAP_MODE_BGR  = 0, // BGR24 (default)
-    CV_CAP_MODE_RGB  = 1, // RGB24
-    CV_CAP_MODE_GRAY = 2, // Y8
-    CV_CAP_MODE_YUYV = 3  // YUYV
-};
-
 enum
 {
     // Data given from depth generator.

modules/videoio/src/cap_avfoundation_mac.mm

@@ -45,6 +45,11 @@
 #include <stdio.h>
 #import <AVFoundation/AVFoundation.h>
 
+#define CV_CAP_MODE_BGR CV_FOURCC_MACRO('B','G','R','3')
+#define CV_CAP_MODE_RGB CV_FOURCC_MACRO('R','G','B','3')
+#define CV_CAP_MODE_GRAY CV_FOURCC_MACRO('G','R','E','Y')
+#define CV_CAP_MODE_YUYV CV_FOURCC_MACRO('Y', 'U', 'Y', 'V')
+
 /********************** Declaration of class headers ************************/
 
 /*****************************************************************************
@@ -154,7 +159,7 @@ private:
     uint8_t  *mOutImagedata;
     IplImage *mOutImage;
     size_t    currSize;
-    int       mMode;
+    uint32_t  mMode;
     int       mFormat;
 
     bool setupReadingAt(CMTime position);
@@ -1028,7 +1033,7 @@ double CvCaptureFile::getProperty(int property_id) const{
             return round((t.value * mAssetTrack.nominalFrameRate) / double(t.timescale));
         case CV_CAP_PROP_FORMAT:
             return mFormat;
-        case CV_CAP_PROP_MODE:
+        case CV_CAP_PROP_FOURCC:
             return mMode;
         default:
             break;
@@ -1062,8 +1067,8 @@ bool CvCaptureFile::setProperty(int property_id, double value) {
             setupReadingAt(t);
             retval = true;
             break;
-        case CV_CAP_PROP_MODE:
-            int mode;
+        case CV_CAP_PROP_FOURCC:
+            uint32_t mode;
             mode = cvRound(value);
             if (mMode == mode) {
                 retval = true;

modules/videoio/src/cap_msmf.cpp

@@ -115,6 +115,11 @@ struct IMFActivate;
 struct IMFMediaSource;
 struct IMFAttributes;
 
+#define CV_CAP_MODE_BGR CV_FOURCC_MACRO('B','G','R','3')
+#define CV_CAP_MODE_RGB CV_FOURCC_MACRO('R','G','B','3')
+#define CV_CAP_MODE_GRAY CV_FOURCC_MACRO('G','R','E','Y')
+#define CV_CAP_MODE_YUYV CV_FOURCC_MACRO('Y', 'U', 'Y', 'V')
+
 namespace
 {
 
@@ -704,7 +709,7 @@ public:
     virtual int getCaptureDomain() CV_OVERRIDE { return CV_CAP_MSMF; }
 protected:
     double getFramerate(MediaType MT) const;
-    bool configureOutput(UINT32 width, UINT32 height, double prefFramerate, UINT32 aspectRatioN, UINT32 aspectRatioD, int outFormat, bool convertToFormat);
+    bool configureOutput(UINT32 width, UINT32 height, double prefFramerate, UINT32 aspectRatioN, UINT32 aspectRatioD, cv::uint32_t outFormat, bool convertToFormat);
     bool setTime(double time, bool rough);
     bool configureHW(bool enable);
 
@@ -720,7 +725,7 @@ protected:
     DWORD dwStreamIndex;
     MediaType nativeFormat;
     MediaType captureFormat;
-    int outputFormat;
+    cv::uint32_t outputFormat;
     UINT32 requestedWidth, requestedHeight;
     bool convertFormat;
     UINT32 aspectN, aspectD;
@@ -836,7 +841,7 @@ static UINT32 resolutionDiff(MediaType& mType, UINT32 refWidth, UINT32 refHeight
 { return UDIFF(mType.width, refWidth) + UDIFF(mType.height, refHeight); }
 #undef UDIFF
 
-bool CvCapture_MSMF::configureOutput(UINT32 width, UINT32 height, double prefFramerate, UINT32 aspectRatioN, UINT32 aspectRatioD, int outFormat, bool convertToFormat)
+bool CvCapture_MSMF::configureOutput(UINT32 width, UINT32 height, double prefFramerate, UINT32 aspectRatioN, UINT32 aspectRatioD, cv::uint32_t outFormat, bool convertToFormat)
 {
     if (width != 0 && height != 0 &&
         width == captureFormat.width && height == captureFormat.height && prefFramerate == getFramerate(nativeFormat) &&
@@ -1375,8 +1380,6 @@ double CvCapture_MSMF::getProperty( int property_id ) const
     if (isOpen)
         switch (property_id)
         {
-        case CV_CAP_PROP_FORMAT:
-                return outputFormat;
         case CV_CAP_PROP_MODE:
                 return captureMode;
         case CV_CAP_PROP_CONVERT_RGB:
@@ -1687,7 +1690,7 @@ bool CvCapture_MSMF::setProperty( int property_id, double value )
             default:
                 return false;
             }
-        case CV_CAP_PROP_FORMAT:
+        case CV_CAP_PROP_FOURCC:
             return configureOutput(requestedWidth, requestedHeight, getFramerate(nativeFormat), aspectN, aspectD, (int)cvRound(value), convertFormat);
         case CV_CAP_PROP_CONVERT_RGB:
             return configureOutput(requestedWidth, requestedHeight, getFramerate(nativeFormat), aspectN, aspectD, outputFormat, value != 0);
@@ -1711,8 +1714,6 @@ bool CvCapture_MSMF::setProperty( int property_id, double value )
             if (value >= 0)
                 return configureOutput(requestedWidth, requestedHeight, value, aspectN, aspectD, outputFormat, convertFormat);
             break;
-        case CV_CAP_PROP_FOURCC:
-            break;
         case CV_CAP_PROP_FRAME_COUNT:
             break;
         case CV_CAP_PROP_POS_AVI_RATIO: