static int demux_demuxers_fill_buffer(demuxer_t *demux,demux_stream_t *ds) {
dd_priv_t* priv;
priv=demux->priv;
if(ds->demuxer == priv->vd)
return demux_fill_buffer(priv->vd,ds);
else if(ds->demuxer == priv->ad)
return demux_fill_buffer(priv->ad,ds);
else if(ds->demuxer == priv->sd)
return demux_fill_buffer(priv->sd,ds);
mp_msg(MSGT_DEMUX,MSGL_WARN,MSGTR_MPDEMUX_DEMUXERS_FillBufferError);
return 0;
}
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);
}
double ds_get_next_pts(demux_stream_t *ds)
{
demuxer_t *demux = ds->demuxer;
// if we have not read from the "current" packet, consider it
// as the next, otherwise we never get the pts for the first packet.
while (!ds->first && (!ds->current || ds->buffer_pos)) {
if (demux->audio->packs >= MAX_PACKS
|| demux->audio->bytes >= 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);
mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
return MP_NOPTS_VALUE;
}
if (demux->video->packs >= MAX_PACKS
|| demux->video->bytes >= 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);
mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
return MP_NOPTS_VALUE;
}
if (!demux_fill_buffer(demux, ds))
return MP_NOPTS_VALUE;
}
// take pts from "current" if we never read from it.
if (ds->current && !ds->buffer_pos)
return ds->current->pts;
return ds->first->pts;
}
/// Open an mpg physical stream
static demuxer_t* demux_mpg_open(demuxer_t* demuxer) {
stream_t *s = demuxer->stream;
mpg_demuxer_t* mpg_d = calloc(1,sizeof(*mpg_d));
if (!mpg_d)
return NULL;
demuxer->priv = mpg_d;
while (demuxer->video->packs + demuxer->audio->packs < 2)
if (!demux_fill_buffer(demuxer, demuxer->video)) return 0;
mpg_d->last_pts = -1.0;
mpg_d->first_pts = -1.0;
//if seeking is allowed set has_valid_timestamps if appropriate
if(demuxer->seekable
&& (demuxer->stream->type == STREAMTYPE_FILE
|| demuxer->stream->type == STREAMTYPE_VCD)
&& demuxer->movi_start != demuxer-> movi_end
)
{
//We seek to the beginning of the stream, to somewhere in the
//middle, and to the end of the stream, while remembering the pts
//at each of the three positions. With these pts, we check whether
//or not the pts are "linear enough" to justify seeking by the pts
//of the stream
//The position where the stream is now
off_t pos = stream_tell(s);
float first_pts = read_first_mpeg_pts_at_position(demuxer, demuxer->movi_start);
if(first_pts != -1.0)
{
float middle_pts = read_first_mpeg_pts_at_position(demuxer, (demuxer->movi_end + demuxer->movi_start)/2);
if(middle_pts != -1.0)
{
float final_pts = read_first_mpeg_pts_at_position(demuxer, demuxer->movi_end - TIMESTAMP_PROBE_LEN);
if(final_pts != -1.0)
{
// found proper first, middle, and final pts.
float proportion = (middle_pts-first_pts==0) ? -1 : (final_pts-middle_pts)/(middle_pts-first_pts);
// if they are linear enough set has_valid_timestamps
if((0.5 < proportion) && (proportion < 2))
{
mpg_d->first_pts = first_pts;
mpg_d->first_to_final_pts_len = final_pts - first_pts;
mpg_d->has_valid_timestamps = 1;
}
}
}
}
//Cleaning up from seeking in stream
reset_eof(demuxer);
stream_seek(s,pos);
ds_fill_buffer(demuxer->video);
} // if ( demuxer->seekable )
return demuxer;
}
static int demux_demuxers_fill_buffer(demuxer_t *demux,demux_stream_t *ds) {
dd_priv_t* priv;
priv=demux->priv;
// HACK: make sure the subtitles get properly interleaved if with -subfile
if (priv->sd && priv->sd->sub != ds &&
priv->sd != priv->vd && priv->sd != priv->ad)
ds_get_next_pts(priv->sd->sub);
if(priv->vd && priv->vd->video == ds)
return demux_fill_buffer(priv->vd,ds);
else if(priv->ad && priv->ad->audio == ds)
return demux_fill_buffer(priv->ad,ds);
else if(priv->sd && priv->sd->sub == ds)
return demux_fill_buffer(priv->sd,ds);
mp_msg(MSGT_DEMUX,MSGL_WARN,MSGTR_MPDEMUX_DEMUXERS_FillBufferError);
return 0;
}
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);
}
// return value:
// 0 = EOF
// 1 = successful
int ds_fill_buffer(demux_stream_t *ds)
{
demuxer_t *demux = ds->demuxer;
if (ds->current)
free_demux_packet(ds->current);
ds->current = NULL;
mp_dbg(MSGT_DEMUXER, MSGL_DBG3, "ds_fill_buffer (%s) called\n",
ds == demux->audio ? "d_audio" : ds == demux->video ? "d_video" :
ds == demux->sub ? "d_sub" : "unknown");
while (1) {
if (ds->packs) {
demux_packet_t *p = ds->first;
// copy useful data:
ds->buffer = p->buffer;
ds->buffer_pos = 0;
ds->buffer_size = p->len;
ds->pos = p->pos;
ds->dpos += p->len; // !!!
++ds->pack_no;
if (p->pts != MP_NOPTS_VALUE) {
ds->pts = p->pts;
ds->pts_bytes = 0;
}
ds->pts_bytes += p->len; // !!!
if (p->stream_pts != MP_NOPTS_VALUE)
demux->stream_pts = p->stream_pts;
ds->keyframe = p->keyframe;
// unlink packet:
ds->bytes -= p->len;
ds->current = p;
ds->first = p->next;
if (!ds->first)
ds->last = NULL;
--ds->packs;
/* The code below can set ds->eof to 1 when another stream runs
* out of buffer space. That makes sense because in that situation
* the calling code should not count on being able to demux more
* packets from this stream.
* If however the situation improves and we're called again
* despite the eof flag then it's better to clear it to avoid
* weird behavior. */
ds->eof = 0;
return 1;
}
#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 -ni option.\n")
if (demux->audio->packs >= MAX_PACKS
|| demux->audio->bytes >= 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);
mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
break;
}
if (demux->video->packs >= MAX_PACKS
|| demux->video->bytes >= 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);
mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
break;
}
if (!demux_fill_buffer(demux, ds)) {
mp_dbg(MSGT_DEMUXER, MSGL_DBG2,
"ds_fill_buffer()->demux_fill_buffer() failed\n");
break; // EOF
}
}
ds->buffer_pos = ds->buffer_size = 0;
ds->buffer = NULL;
mp_msg(MSGT_DEMUXER, MSGL_V,
"ds_fill_buffer: EOF reached (stream: %s) \n",
ds == demux->audio ? "audio" : "video");
ds->eof = 1;
return 0;
}