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implemented DEMUXER_CTRL_IDENTIFY_PROGRAM to permit program switching 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24873 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nicodvb 2007-10-27 19:15:43 +00:00
parent fd0f023657
commit af64793313
1 changed files with 54 additions and 0 deletions
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54
libmpdemux/demux_lavf.c
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@ -707,6 +707,60 @@ static int demux_lavf_control(demuxer_t *demuxer, int cmd, void *arg)
return DEMUXER_CTRL_OK;
}
}
case DEMUXER_CTRL_IDENTIFY_PROGRAM:
{
demux_program_t *prog = arg;
AVProgram *program;
int p, i;
if(priv->avfc->nb_programs < 2)
return DEMUXER_CTRL_NOTIMPL;
if(prog->progid == -1)
{
p = 0;
while(p<priv->avfc->nb_programs && priv->avfc->programs[p]->id != priv->cur_program)
p++;
p = (p + 1) % priv->avfc->nb_programs;
}
else
{
for(i=0; i<priv->avfc->nb_programs; i++)
if(priv->avfc->programs[i]->id == prog->progid)
break;
if(i==priv->avfc->nb_programs)
return DEMUXER_CTRL_NOTIMPL;
p = i;
}
prog->vid = prog->aid = prog->sid = -2; //no audio and no video by default
redo:
program = priv->avfc->programs[p];
for(i=0; i<program->nb_stream_indexes; i++)
{
switch(priv->avfc->streams[program->stream_index[i]]->codec->codec_type)
{
case CODEC_TYPE_VIDEO:
if(prog->vid == -2)
prog->vid = program->stream_index[i];
break;
case CODEC_TYPE_AUDIO:
if(prog->aid == -2)
prog->aid = program->stream_index[i];
break;
case CODEC_TYPE_SUBTITLE:
if(prog->sid == -2 && priv->avfc->streams[program->stream_index[i]]->codec->codec_id == CODEC_ID_TEXT)
prog->sid = program->stream_index[i];
break;
}
}
if(prog->progid == -1 && prog->vid == -2 && prog->aid == -2)
{
p = (p + 1) % priv->avfc->nb_programs;
goto redo;
}
priv->cur_program = prog->progid = program->id;
return DEMUXER_CTRL_OK;
}
default:
return DEMUXER_CTRL_NOTIMPL;
}