set PKT_FLAG_KEY for Theora and OGM streams

Originally committed as revision 11002 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/oggdec.c

@@ -377,6 +377,7 @@ ogg_packet (AVFormatContext * s, int *str, int *dstart, int *dsize)
     }
 
     if (os->header > -1 && os->seq > os->header){
+        os->pflags = 0;
         if (os->codec && os->codec->packet)
             os->codec->packet (s, idx);
         if (str)
@@ -525,6 +526,8 @@ ogg_read_packet (AVFormatContext * s, AVPacket * pkt)
         os->lastgp = -1;
     }
 
+    pkt->flags = os->pflags;
+
     return psize;
 }
 

libavformat/oggdec.h

@@ -42,6 +42,7 @@ typedef struct ogg_stream {
     unsigned int bufpos;
     unsigned int pstart;
     unsigned int psize;
+    unsigned int pflags;
     uint32_t serial;
     uint32_t seq;
     uint64_t granule, lastgp;

libavformat/oggparseogm.c

@@ -134,6 +134,9 @@ ogm_packet(AVFormatContext *s, int idx)
     uint8_t *p = os->buf + os->pstart;
     int lb;
 
+    if(*p & 8)
+        os->pflags |= PKT_FLAG_KEY;
+
     lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
     os->pstart += lb + 1;
     os->psize -= lb + 1;

libavformat/oggparsetheora.c

@@ -124,6 +124,9 @@ theora_gptopts(AVFormatContext *ctx, int idx, uint64_t gp)
     uint64_t iframe = gp >> thp->gpshift;
     uint64_t pframe = gp & thp->gpmask;
 
+    if(!pframe)
+        os->pflags |= PKT_FLAG_KEY;
+
     return iframe + pframe;
 }