Ticket #7454: mythtv_ffmpeg_19621_19622_matroskadec.diff

libs/libavformat/matroskadec.c

@@ -241 +241 @@
 typedef struct {
     uint64_t duration;
     int64_t  reference;
+    uint64_t  non_simple;
     EbmlBin  bin;
 } MatroskaBlock;
 
@@ -479 +480 @@
     { MATROSKA_ID_SIMPLEBLOCK,    EBML_BIN,  0, offsetof(MatroskaBlock,bin) },
     { MATROSKA_ID_BLOCKDURATION,  EBML_UINT, 0, offsetof(MatroskaBlock,duration), {.u=AV_NOPTS_VALUE} },
     { MATROSKA_ID_BLOCKREFERENCE, EBML_UINT, 0, offsetof(MatroskaBlock,reference) },
+    { 1,                          EBML_UINT, 0, offsetof(MatroskaBlock,non_simple), {.u=1} },
     { 0 }
 };
 
@@ -1374 +1376 @@
                       st->codec->height * track->video.display_width,
                       st->codec-> width * track->video.display_height,
                       255);
+            if (st->codec->codec_id != CODEC_ID_H264)
             st->need_parsing = AVSTREAM_PARSE_HEADERS;
         } else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) {
             st->codec->codec_type = CODEC_TYPE_AUDIO;
@@ -1744 +1747 @@
     blocks_list = &cluster.blocks;
     blocks = blocks_list->elem;
     for (i=0; i<blocks_list->nb_elem; i++)
-        if (blocks[i].bin.size > 0)
+        if (blocks[i].bin.size > 0) {
+            int is_keyframe = blocks[i].non_simple ? !blocks[i].reference : -1;
             res=matroska_parse_block(matroska,
                                      blocks[i].bin.data, blocks[i].bin.size,
                                      blocks[i].bin.pos,  cluster.timecode,
-                                     blocks[i].duration, !blocks[i].reference,
+                                     blocks[i].duration, is_keyframe,
                                      pos);
+        }
     ebml_free(matroska_cluster, &cluster);
     if (res < 0)  matroska->done = 1;
     return res;