avutil/frame: add an LCEVC enhancement data payload side data type

Signed-off-by: James Almer <jamrial@gmail.com>

doc/APIchanges

@@ -2,6 +2,9 @@ The last version increases of all libraries were on 2024-03-07
 
 API changes, most recent first:
 
+2024-09-18 - xxxxxxxxxx - lavu 59.37.100 - frame.h
+  Add AV_FRAME_DATA_LCEVC.
+
 2024-09-xx - xxxxxxxxxx - lavc 61.13.100 - avcodec.h
   Add avcodec_get_supported_config() and enum AVCodecConfig; deprecate
   AVCodec.pix_fmts, AVCodec.sample_fmts, AVCodec.supported_framerates,

libavutil/frame.c

@@ -46,6 +46,7 @@ static const AVSideDataDescriptor sd_props[] = {
     [AV_FRAME_DATA_DETECTION_BBOXES]            = { "Bounding boxes for object detection and classification" },
     [AV_FRAME_DATA_DOVI_RPU_BUFFER]             = { "Dolby Vision RPU Data" },
     [AV_FRAME_DATA_DOVI_METADATA]               = { "Dolby Vision Metadata" },
+    [AV_FRAME_DATA_LCEVC]                       = { "LCEVC NAL data" },
     [AV_FRAME_DATA_STEREO3D]                    = { "Stereo 3D",                                    AV_SIDE_DATA_PROP_GLOBAL },
     [AV_FRAME_DATA_REPLAYGAIN]                  = { "AVReplayGain",                                 AV_SIDE_DATA_PROP_GLOBAL },
     [AV_FRAME_DATA_DISPLAYMATRIX]               = { "3x3 displaymatrix",                            AV_SIDE_DATA_PROP_GLOBAL },

libavutil/frame.h

@@ -228,6 +228,12 @@ enum AVFrameSideDataType {
      * encoding.
      */
     AV_FRAME_DATA_VIDEO_HINT,
+
+    /**
+     * Raw LCEVC payload data, as a uint8_t array, with NAL emulation
+     * bytes intact.
+     */
+    AV_FRAME_DATA_LCEVC,
 };
 
 enum AVActiveFormatDescription {

libavutil/version.h

@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  59
-#define LIBAVUTIL_VERSION_MINOR  36
+#define LIBAVUTIL_VERSION_MINOR  37
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \