demux: fix behavior with files that have sparse video packets

Improve EOF handling in ds_fill_buffer for the case where one stream ends
much earlier than the others, in particular make sure the "too many ..."
message is not printed over and over.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32823 b3059339-0415-0410-9bf9-f77b7e298cf2

Conflicts:
	libmpdemux/demuxer.c

Try to improve seeking in files with only few video packets,
in particular files with cover art.

This might cause issues with badly interleaved files, particularly
together with -audio-delay, even though I did not see issues
in my very limited testing.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@35486 b3059339-0415-0410-9bf9-f77b7e298cf2

Conflicts:
	libmpdemux/demuxer.c
	libmpdemux/demuxer.h

Fix code that detects streams temporarily lacking data to work
properly with e.g. DVDs.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@35499 b3059339-0415-0410-9bf9-f77b7e298cf2

Conflicts:
	libmpdemux/demuxer.c

Make stream eof detection less sensitive.

Fixes bug #2111.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@35543 b3059339-0415-0410-9bf9-f77b7e298cf2

Conflicts:
	libmpdemux/demuxer.c

demux/demux.c

@@ -623,8 +623,15 @@ int ds_fill_buffer(demux_stream_t *ds)
            ds == demux->audio ? "d_audio" : ds == demux->video ? "d_video" :
            ds == demux->sub   ? "d_sub"   : "unknown");
     while (1) {
+        int apacks = demux->audio ? demux->audio->packs : 0;
+        int abytes = demux->audio ? demux->audio->bytes : 0;
+        int vpacks = demux->video ? demux->video->packs : 0;
+        int vbytes = demux->video ? demux->video->bytes : 0;
         if (ds->packs) {
             demux_packet_t *p = ds->first;
+            // obviously not yet EOF after all
+            ds->eof = 0;
+            ds->fill_count = 0;
             // copy useful data:
             ds->buffer = p->buffer;
             ds->buffer_pos = 0;
@@ -657,21 +664,30 @@ int ds_fill_buffer(demux_stream_t *ds)
             ds->eof = 0;
             return 1;
         }
+        // avoid buffering too far ahead in e.g. badly interleaved files
+        // or when one stream is shorter, without breaking large audio
+        // delay with well interleaved files.
+        // This needs to be enough for at least 1 second of packets
+        // since libavformat mov demuxer does not try to interleave
+        // with more than 1s precision.
+        if (ds->fill_count > 80)
+            break;
+        // avoid printing the "too many ..." message over and over
+        if (ds->eof)
+            break;
 
 #define MaybeNI _("Maybe you are playing a non-interleaved stream/file or the codec failed?\n" \
                 "For AVI files, try to force non-interleaved mode with the --demuxer=avi --avi-ni options.\n")
 
-        if (demux->audio->packs >= MAX_PACKS
-            || demux->audio->bytes >= MAX_PACK_BYTES) {
+        if (apacks >= MAX_PACKS || abytes >= MAX_PACK_BYTES) {
             mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many audio packets in the buffer: (%d in %d bytes).\n",
-                   demux->audio->packs, demux->audio->bytes);
+                   apacks, abytes);
             mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
             break;
         }
-        if (demux->video->packs >= MAX_PACKS
-            || demux->video->bytes >= MAX_PACK_BYTES) {
+        if (vpacks >= MAX_PACKS || vbytes >= MAX_PACK_BYTES) {
             mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many video packets in the buffer: (%d in %d bytes).\n",
-                   demux->video->packs, demux->video->bytes);
+                   vpacks, vbytes);
             mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
             break;
         }
@@ -680,6 +696,15 @@ int ds_fill_buffer(demux_stream_t *ds)
                    "ds_fill_buffer()->demux_fill_buffer() failed\n");
             break; // EOF
         }
+        if (demux->audio)
+            ds->fill_count += demux->audio->packs - apacks;
+        if (demux->video && demux->video->packs > vpacks &&
+            // Empty packets or "skip" packets in e.g. AVI can cause issues.
+            demux->video->bytes > vbytes + 100 &&
+            // when video needs parsing we will have lots of video packets
+            // in-between audio packets, so ignore them in that case.
+            demux->video->sh && !((sh_video_t *)demux->video->sh)->needs_parsing)
+            ds->fill_count++;
     }
     ds->buffer_pos = ds->buffer_size = 0;
     ds->buffer = NULL;

demux/demux.h

@@ -120,6 +120,7 @@ typedef struct demux_stream {
     int pack_no;           // serial number of packet
     bool keyframe;         // keyframe flag of current packet
 //---------------
+    int fill_count;        // number of unsuccessful tries to get a packet
     int packs;            // number of packets in buffer
     int bytes;            // total bytes of packets in buffer
     demux_packet_t *first; // read to current buffer from here

demux/video.c

@@ -422,6 +422,7 @@ int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char**
     int picture_coding_type=0;
     int in_size=0;
     video_codec_t video_codec = find_video_codec(sh_video);
+    sh_video->needs_parsing = video_codec != VIDEO_OTHER;
 
     *start=NULL;