static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags) {
dd_priv_t* priv;
float pos;
priv=demuxer->priv;
priv->ad->stream->eof = 0;
priv->sd->stream->eof = 0;
// Seek video
demux_seek(priv->vd,rel_seek_secs,audio_delay,flags);
// Get the new pos
pos = demuxer->video->pts;
if (!pos) {
demux_fill_buffer(priv->vd, demuxer->video);
if (demuxer->video->first)
pos = demuxer->video->first->pts;
}
if(priv->ad != priv->vd && demuxer->audio->sh) {
sh_audio_t* sh = demuxer->audio->sh;
demux_seek(priv->ad,pos,audio_delay,1);
// In case the demuxer don't set pts
if(!demuxer->audio->pts)
demuxer->audio->pts = pos-((ds_tell_pts(demuxer->audio)-sh->a_in_buffer_len)/(float)sh->i_bps);
}
if(priv->sd != priv->vd)
demux_seek(priv->sd,pos,audio_delay,1);
}
/// Returns a_pts
double calc_a_pts(sh_audio_t *sh_audio, demux_stream_t *d_audio)
{
double a_pts;
if(!sh_audio || !d_audio)
return MP_NOPTS_VALUE;
// first calculate the end pts of audio that has been output by decoder
a_pts = sh_audio->pts;
// If we cannot get any useful information at all from the demuxer layer
// just count the decoded bytes. This is still better than constantly
// resetting to 0.
if (sh_audio->pts_bytes && a_pts == MP_NOPTS_VALUE &&
!d_audio->pts && !sh_audio->i_bps)
a_pts = 0;
if (a_pts != MP_NOPTS_VALUE)
// Good, decoder supports new way of calculating audio pts.
// sh_audio->pts is the timestamp of the latest input packet with
// known pts that the decoder has decoded. sh_audio->pts_bytes is
// the amount of bytes the decoder has written after that timestamp.
a_pts += sh_audio->pts_bytes / (double) sh_audio->o_bps;
else {
// Decoder doesn't support new way of calculating pts (or we're
// being called before it has decoded anything with known timestamp).
// Use the old method of audio pts calculation: take the timestamp
// of last packet with known pts the decoder has read data from,
// and add amount of bytes read after the beginning of that packet
// divided by input bps. This will be inaccurate if the input/output
// ratio is not constant for every audio packet or if it is constant
// but not accurately known in sh_audio->i_bps.
a_pts = d_audio->pts;
// ds_tell_pts returns bytes read after last timestamp from
// demuxing layer, decoder might use sh_audio->a_in_buffer for bytes
// it has read but not decoded
if (sh_audio->i_bps)
a_pts += (ds_tell_pts(d_audio) - sh_audio->a_in_buffer_len) /
(double)sh_audio->i_bps;
}
return a_pts;
}
static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags) {
dd_priv_t* priv;
float pos;
priv=demuxer->priv;
priv->ad->stream->eof = 0;
priv->sd->stream->eof = 0;
// Seek video
demux_seek(priv->vd,rel_seek_secs,audio_delay,flags);
// Get the new pos
pos = demuxer->video->pts;
if (!pos) {
// since the video demuxer might provide multiple
// streams (e.g. subs) we might have to call
// demux_fill_buffer multiple times.
int limit = 10;
do {
demux_fill_buffer(priv->vd, demuxer->video);
} while (--limit && !demuxer->video->first);
if (demuxer->video->first)
pos = demuxer->video->first->pts;
}
if(priv->ad != priv->vd && demuxer->audio->sh) {
sh_audio_t* sh = demuxer->audio->sh;
demux_seek(priv->ad,pos,audio_delay,1);
// In case the demuxer don't set pts
if(!demuxer->audio->pts)
demuxer->audio->pts = pos-((ds_tell_pts(demuxer->audio)-sh->a_in_buffer_len)/(float)sh->i_bps);
}
if(priv->sd != priv->vd)
demux_seek(priv->sd,pos,audio_delay,1);
}
static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
{
DMO_AudioDecoder* ds_adec = sh_audio->context;
// int len=-1;
int size_in=0;
int size_out=0;
int srcsize=DMO_AudioDecoder_GetSrcSize(ds_adec, maxlen);
mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DMO says: srcsize=%d (buffsize=%d) out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen);
if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
if(sh_audio->a_in_buffer_len<srcsize){
sh_audio->a_in_buffer_len+=
demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
srcsize-sh_audio->a_in_buffer_len);
}
DMO_AudioDecoder_Convert(ds_adec, sh_audio->a_in_buffer,sh_audio->a_in_buffer_len,
buf,maxlen, &size_in,&size_out);
mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"DMO: audio %d -> %d converted (in_buf_len=%d of %d) %d\n",size_in,size_out,sh_audio->a_in_buffer_len,sh_audio->a_in_buffer_size,ds_tell_pts(sh_audio->ds));
if(size_in>=sh_audio->a_in_buffer_len){
sh_audio->a_in_buffer_len=0;
} else {
sh_audio->a_in_buffer_len-=size_in;
memmove(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len);
}
// len=size_out;
return size_out;
}