avutil: Add GOP timecode frame side data

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

doc/APIchanges

@@ -15,6 +15,9 @@ libavutil:     2015-08-28
 
 API changes, most recent first:
 
+2016-01-31 - xxxxxxx - lavu 55.17.100
+  Add AV_FRAME_DATA_GOP_TIMECODE for exporting MPEG1/2 GOP timecodes.
+
 2016-01-01 - xxxxxxx - lavc 57.21.100 / 57.12.0 - avcodec.h
   Add AVCodecDescriptor.profiles and avcodec_profile_name().
 

libavutil/frame.c

@@ -733,6 +733,7 @@ const char *av_frame_side_data_name(enum AVFrameSideDataType type)
     case AV_FRAME_DATA_SKIP_SAMPLES:    return "Skip samples";
     case AV_FRAME_DATA_AUDIO_SERVICE_TYPE:          return "Audio service type";
     case AV_FRAME_DATA_MASTERING_DISPLAY_METADATA:  return "Mastering display metadata";
+    case AV_FRAME_DATA_GOP_TIMECODE:                return "GOP timecode";
     }
     return NULL;
 }

libavutil/frame.h

@@ -116,7 +116,12 @@ enum AVFrameSideDataType {
      * an AVMasteringDisplayMetadata type and contains information about the
      * mastering display color volume.
      */
-    AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
+    AV_FRAME_DATA_MASTERING_DISPLAY_METADATA,
+    /**
+     * The GOP timecode in 25 bit timecode format. Data format is 64-bit integer.
+     * This is set on the first frame of a GOP that has a temporal reference of 0.
+     */
+    AV_FRAME_DATA_GOP_TIMECODE
 };
 
 enum AVActiveFormatDescription {

libavutil/version.h

@@ -64,8 +64,8 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  55
-#define LIBAVUTIL_VERSION_MINOR  16
-#define LIBAVUTIL_VERSION_MICRO 101
+#define LIBAVUTIL_VERSION_MINOR  17
+#define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \