Add a side data type for audio service type.

Currently, audio service type is a field in AVCodecContext. However,
side data is more appropriate for this kind of information.

doc/APIchanges

@@ -13,6 +13,10 @@ libavutil:     2014-08-09
 
 API changes, most recent first:
 
+2014-11-xx - xxxxxxx - lavc 56.12.0, lavu 54.8.0 - avcodec.h, frame.h
+  Add AV_PKT_DATA_AUDIO_SERVICE_TYPE and AV_FRAME_DATA_AUDIO_SERVICE_TYPE for
+  storing the audio service type as side data.
+
 201x-xx-xx - xxxxxxx - lavc 56.10.0 - vdpau.h
   Add av_vdpau_get_surface_parameters().
 

libavcodec/avcodec.h

@@ -917,6 +917,12 @@ enum AVPacketSideDataType {
      * Stereoscopic 3D information in form of the AVStereo3D struct.
      */
     AV_PKT_DATA_STEREO3D,
+
+    /**
+     * This side data should be associated with an audio stream and corresponds
+     * to enum AVAudioServiceType.
+     */
+    AV_PKT_DATA_AUDIO_SERVICE_TYPE,
 };
 
 typedef struct AVPacketSideData {

libavcodec/utils.c

@@ -569,6 +569,7 @@ int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
         { AV_PKT_DATA_REPLAYGAIN ,   AV_FRAME_DATA_REPLAYGAIN },
         { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
         { AV_PKT_DATA_STEREO3D,      AV_FRAME_DATA_STEREO3D },
+        { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
     };
 
     frame->color_primaries = avctx->color_primaries;

libavcodec/version.h

@@ -29,7 +29,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 56
-#define LIBAVCODEC_VERSION_MINOR 11
+#define LIBAVCODEC_VERSION_MINOR 12
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

libavfilter/af_ashowinfo.c

@@ -157,6 +157,30 @@ static void dump_replaygain(AVFilterContext *ctx, AVFrameSideData *sd)
     print_peak(ctx, "album peak", rg->album_peak);
 }
 
+static void dump_audio_service_type(AVFilterContext *ctx, AVFrameSideData *sd)
+{
+    enum AVAudioServiceType *ast;
+
+    av_log(ctx, AV_LOG_INFO, "audio service type: ");
+    if (sd->size < sizeof(*ast)) {
+        av_log(ctx, AV_LOG_INFO, "invalid data");
+        return;
+    }
+    ast = (enum AVAudioServiceType*)sd->data;
+    switch (*ast) {
+    case AV_AUDIO_SERVICE_TYPE_MAIN:              av_log(ctx, AV_LOG_INFO, "Main Audio Service"); break;
+    case AV_AUDIO_SERVICE_TYPE_EFFECTS:           av_log(ctx, AV_LOG_INFO, "Effects");            break;
+    case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED: av_log(ctx, AV_LOG_INFO, "Visually Impaired");  break;
+    case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:  av_log(ctx, AV_LOG_INFO, "Hearing Impaired");   break;
+    case AV_AUDIO_SERVICE_TYPE_DIALOGUE:          av_log(ctx, AV_LOG_INFO, "Dialogue");           break;
+    case AV_AUDIO_SERVICE_TYPE_COMMENTARY:        av_log(ctx, AV_LOG_INFO, "Commentary");         break;
+    case AV_AUDIO_SERVICE_TYPE_EMERGENCY:         av_log(ctx, AV_LOG_INFO, "Emergency");          break;
+    case AV_AUDIO_SERVICE_TYPE_VOICE_OVER:        av_log(ctx, AV_LOG_INFO, "Voice Over");         break;
+    case AV_AUDIO_SERVICE_TYPE_KARAOKE:           av_log(ctx, AV_LOG_INFO, "Karaoke");            break;
+    default:                                      av_log(ctx, AV_LOG_INFO, "unknown");            break;
+    }
+}
+
 static void dump_unknown(AVFilterContext *ctx, AVFrameSideData *sd)
 {
     av_log(ctx, AV_LOG_INFO, "unknown side data type: %d, size %d bytes", sd->type, sd->size);
@@ -208,6 +232,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
         case AV_FRAME_DATA_MATRIXENCODING: dump_matrixenc (ctx, sd); break;
         case AV_FRAME_DATA_DOWNMIX_INFO:   dump_downmix   (ctx, sd); break;
         case AV_FRAME_DATA_REPLAYGAIN:     dump_replaygain(ctx, sd); break;
+        case AV_FRAME_DATA_AUDIO_SERVICE_TYPE: dump_audio_service_type(ctx, sd); break;
         default:                           dump_unknown   (ctx, sd); break;
         }
 

libavutil/frame.h

@@ -87,6 +87,12 @@ enum AVFrameSideDataType {
      * in ETSI TS 101 154 using enum AVActiveFormatDescription.
      */
     AV_FRAME_DATA_AFD,
+
+    /**
+     * This side data must be associated with an audio frame and corresponds to
+     * enum AVAudioServiceType defined in avcodec.h.
+     */
+    AV_FRAME_DATA_AUDIO_SERVICE_TYPE,
 };
 
 enum AVActiveFormatDescription {

libavutil/version.h

@@ -54,7 +54,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR 54
-#define LIBAVUTIL_VERSION_MINOR  7
+#define LIBAVUTIL_VERSION_MINOR  8
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \