libeplayer3/libspark: cPlayback: implement retrieval of metadata

libeplayer3/container/container_ass.c

@@ -56,7 +56,7 @@
 
 #ifdef ASS_DEBUG
 
-static short debug_level = 10;
+static short debug_level = 0;
 
 #define ass_printf(level, fmt, x...) do { \
 if (debug_level >= level) printf("[%s:%s] " fmt, __FILE__, __FUNCTION__, ## x); } while (0)

libeplayer3/container/container_ffmpeg.c

@@ -1508,6 +1508,67 @@ static int container_ffmpeg_get_info(Context_t * context, char **infoString)
 
 }
 
+static int container_ffmpeg_get_metadata(Context_t * context, char ***p)
+{
+	Track_t *videoTrack = NULL;
+	Track_t *audioTrack = NULL;
+	AVDictionaryEntry *tag = NULL;
+	size_t psize = 1;
+	char **pp;
+
+	if (!context) {
+		fprintf(stderr, "BUG %s:%d\n", __func__, __LINE__);
+		return cERR_CONTAINER_FFMPEG_ERR;
+	}
+
+	if (!p || *p) {
+		fprintf(stderr, "BUG %s:%d\n", __func__, __LINE__);
+		return cERR_CONTAINER_FFMPEG_ERR;
+	}
+
+	context->manager->video->Command(context, MANAGER_GET_TRACK, &videoTrack);
+	context->manager->audio->Command(context, MANAGER_GET_TRACK, &audioTrack);
+
+	if (avContext->metadata)
+		psize += av_dict_count(avContext->metadata);
+	if (videoTrack)
+		psize += av_dict_count(((AVStream *)(videoTrack->stream))->metadata);
+	if (audioTrack)
+		psize += av_dict_count(((AVStream *)(audioTrack->stream))->metadata);
+
+	*p = malloc(sizeof(char *) * psize * 2);
+	if (!*p) {
+		fprintf(stderr, "MALLOC %s:%d\n", __func__, __LINE__);
+		return cERR_CONTAINER_FFMPEG_ERR;
+	}
+	pp = *p;
+
+	if (avContext->metadata)
+		while ((tag = av_dict_get(avContext->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
+			*pp++ = strdup(tag->key);
+			*pp++ = strdup(tag->value);
+		}
+
+	if (videoTrack) {
+		tag = NULL;
+		while ((tag = av_dict_get(((AVStream *)(videoTrack->stream))->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
+			*pp++ = strdup(tag->key);
+			*pp++ = strdup(tag->value);
+		}
+	}
+	if (audioTrack) {
+		tag = NULL;
+		while ((tag = av_dict_get(((AVStream *)(audioTrack->stream))->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
+			*pp++ = strdup(tag->key);
+			*pp++ = strdup(tag->value);
+		}
+	}
+	*pp++ = NULL;
+	*pp = NULL;
+
+	return cERR_CONTAINER_FFMPEG_NO_ERROR;
+}
+
 static int Command(void *_context, ContainerCmd_t command, void *argument)
 {
     Context_t *context = (Context_t *) _context;
@@ -1560,6 +1621,10 @@ static int Command(void *_context, ContainerCmd_t command, void *argument)
 	    ret = container_ffmpeg_get_info(context, (char **) argument);
 	    break;
 	}
+    case CONTAINER_METADATA:{
+	    ret = container_ffmpeg_get_metadata(context, (char ***) argument);
+	    break;
+	}
     case CONTAINER_STATUS:{
 	    *((int *) argument) = hasPlayThreadStarted;
 	    break;

libeplayer3/include/container.h

@@ -18,6 +18,7 @@ typedef enum {
     CONTAINER_SWITCH_DVBSUBTITLE,
     CONTAINER_SWITCH_TELETEXT,
     CONTAINER_INFO,
+    CONTAINER_METADATA,
     CONTAINER_STATUS,
     CONTAINER_LAST_PTS,
     CONTAINER_DATA

libeplayer3/include/playback.h

@@ -6,7 +6,7 @@ typedef enum { PLAYBACK_OPEN, PLAYBACK_CLOSE, PLAYBACK_PLAY, PLAYBACK_STOP,
     PLAYBACK_PAUSE, PLAYBACK_CONTINUE, PLAYBACK_FLUSH, PLAYBACK_TERM,
     PLAYBACK_FASTFORWARD, PLAYBACK_SEEK, PLAYBACK_SEEK_ABS,
     PLAYBACK_PTS, PLAYBACK_LENGTH, PLAYBACK_SWITCH_AUDIO,
-    PLAYBACK_SWITCH_SUBTITLE, PLAYBACK_INFO, PLAYBACK_SLOWMOTION,
+    PLAYBACK_SWITCH_SUBTITLE, PLAYBACK_INFO, PLAYBACK_METADATA, PLAYBACK_SLOWMOTION,
     PLAYBACK_FASTBACKWARD, PLAYBACK_GET_FRAME_COUNT,
     PLAYBACK_SWITCH_TELETEXT, PLAYBACK_SWITCH_DVBSUBTITLE,
     PLAYBACK_FRAMEBUFFER_LOCK,

libeplayer3/playback/playback.c

@@ -862,6 +862,17 @@ static int PlaybackInfo(Context_t * context, char **infoString)
     return ret;
 }
 
+static int PlaybackMetadata(Context_t * context, char ***metadata)
+{
+    int ret = cERR_PLAYBACK_NO_ERROR;
+
+    if (context->container && context->container->selectedContainer)
+	context->container->selectedContainer->Command(context,
+						       CONTAINER_METADATA,
+						       metadata);
+    return ret;
+}
+
 static int Command(void *_context, PlaybackCmd_t command, void *argument)
 {
     Context_t *context = (Context_t *) _context;	/* to satisfy compiler */
@@ -932,6 +943,10 @@ static int Command(void *_context, PlaybackCmd_t command, void *argument)
 	    ret = PlaybackInfo(context, (char **) argument);
 	    break;
 	}
+    case PLAYBACK_METADATA:{
+	    ret = PlaybackMetadata(context, (char ***) argument);
+	    break;
+	}
     case PLAYBACK_SLOWMOTION:{
 	    ret = PlaybackSlowMotion(context, (int *) argument);
 	    break;