lavc: add a new sidedata type for DOVI

add a new sidedata type for DOVI.
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>

libavcodec/avpacket.c

@@ -396,6 +396,7 @@ const char *av_packet_side_data_name(enum AVPacketSideDataType type)
     case AV_PKT_DATA_ENCRYPTION_INFO:            return "Encryption info";
     case AV_PKT_DATA_AFD:                        return "Active Format Description data";
     case AV_PKT_DATA_ICC_PROFILE:                return "ICC Profile";
+    case AV_PKT_DATA_DOVI_CONF:                  return "DOVI configuration record";
     }
     return NULL;
 }

libavcodec/packet.h

@@ -273,6 +273,15 @@ enum AVPacketSideDataType {
      */
     AV_PKT_DATA_ICC_PROFILE,
 
+    /**
+     * DOVI configuration
+     * ref:
+     * dolby-vision-bitstreams-within-the-iso-base-media-file-format-v2.1.2, section 2.2
+     * dolby-vision-bitstreams-in-mpeg-2-transport-stream-multiplex-v1.2, section 3.3
+     * Tags are stored in struct AVDOVIDecoderConfigurationRecord.
+     */
+    AV_PKT_DATA_DOVI_CONF,
+
     /**
      * The number of side data types.
      * This is not part of the public API/ABI in the sense that it may