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demux: apply sparse video hack only to demux_lavf and demux_mkv 

Apparently this cuases trouble for legacy demuxers. demux_mpg stopped
doing PCM audio. (The problem was probably that it read a bunch of
video packets on detection, and then the sparse video hack prevented
audio packets from being read, because it looked like there were no
more audio packets. With sparse video, this normally helps not reading
too many audio packets.)

Since the legacy demuxers do not need this hack, enable it for
demux_lavf and demux_mkv only.

Some additional hacks that were needed to handle legacy demuxers can be
removed, making the code simpler.

Also see commit 4a40eed.
This commit is contained in:
wm4 2013-02-14 15:11:42 +01:00
parent e6307997d2
commit ac82c73224
2 changed files with 8 additions and 11 deletions
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18
demux/demux.c
View File

@ -625,7 +625,6 @@ int ds_fill_buffer(demux_stream_t *ds)
while (1) {
int apacks = demux->audio ? demux->audio->packs : 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;
// copy useful data:
@ -679,15 +678,14 @@ int ds_fill_buffer(demux_stream_t *ds)
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++;
if (demux->type == DEMUXER_TYPE_LAVF ||
demux->type == DEMUXER_TYPE_MATROSKA)
{
if (demux->audio)
ds->fill_count += demux->audio->packs - apacks;
if (demux->video && demux->video->packs > vpacks)
ds->fill_count++;
}
}
ds->buffer_pos = ds->buffer_size = 0;
ds->buffer = NULL;

1
demux/video.c
View File

@ -425,7 +425,6 @@ 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;