[MPlayer-dev-eng] mplayer without video

[Alban Bedel]

On Mon, 14 Jan 2002 17:46:12 +0800
Sam Lin <itrs at softwell.com.tw> wrote:

> >On Sun, 13 Jan 2002 22:48:05 -0800
> >Bertrand Baudet <bertrand_baudet at yahoo.com> wrote:
> >Yesterday I look at this and I finnaly had success with audio only stream
> >	(but not all are working). The problem is in the demuxer, it assume to found
> >	first a video chunk. It was working with downloaded sample because
> >	it load chunk until eof and then pass on audio and work. What is needed
> >	is to do the ds_fill_buffer with video only if we found a video stream in
> >	the header wich is currentlly assumed and not checked. Look in demuxer.c
> >	the function wich open the demuxer I think it will be easyer to understand what
> >	I'm trying to explain ;¡P).
> >		Albeu
> 
> So the solution is:
> 
> --- main/libmpdemux/demuxer.c   Thu Jan 10 13:56:16 2002
> +++ main-itrs/libmpdemux/demuxer.c      Mon Jan 14 17:01:47 2002
> @@ -587,6 +587,7 @@
>    stream_seek(demuxer->stream,demuxer->movi_start);
>  //  demuxer->idx_pos=0;
>  //  demuxer->endpos=avi_header.movi_end;
> +  if(sh_video){
>    if(!ds_fill_buffer(d_video)){
>      mp_msg(MSGT_DEMUXER,MSGL_WARN,"ASF: " MSGTR_MissingVideoStream);
>      sh_video=NULL;
> @@ -601,6 +602,7 @@
>        sh_video->bih->biHeight,
>        sh_video->bih->biBitCount);
>  //      sh_video->i_bps=10*asf_packetsize; // FIXME!
> +  }
>    }
>    if(audio_id!=-2){
>      mp_msg(MSGT_DEMUXER,MSGL_V,"ASF: Searching for audio stream (id:%d)\n",d_audio->id);
> 
> END
> 
> Is this right ?
	I'am afraid not because I tried this and when there is a video stream it don't work anymore
	because at this stage sh_video is always NULL. Look it's setted a few lines after. Here is a patch
	wich work both with audio only and 'normal' audio/video stream. If you alredy have applied the other
	one strip the part for mplayer.c and demux_avi.c (it's a cvs diff).
		Albeu
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