libmpdemux/demux_demuxers.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include "config.h"
  20 #include "mp_msg.h"
  21
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include "stream/stream.h"
  25 #include "demuxer.h"
  26 #include "stheader.h"
  27 #include "talloc.h"
  28
  29 typedef struct dd_priv {
  30   demuxer_t* vd;
  31   demuxer_t* ad;
  32   demuxer_t* sd;
  33 } dd_priv_t;
  34
  35 extern const demuxer_desc_t demuxer_desc_demuxers;
  36
  37 demuxer_t*  new_demuxers_demuxer(demuxer_t* vd, demuxer_t* ad, demuxer_t* sd) {
  38   demuxer_t* ret;
  39   dd_priv_t* priv;
  40
  41   ret = talloc_zero(NULL, struct demuxer);
  42
  43   priv = malloc(sizeof(dd_priv_t));
  44   priv->vd = vd;
  45   priv->ad = ad;
  46   priv->sd = sd;
  47   ret->priv = priv;
  48
  49   ret->type = ret->file_format = DEMUXER_TYPE_DEMUXERS;
  50   // Video is the most important :-)
  51   ret->stream = vd->stream;
  52   ret->seekable = vd->seekable && ad->seekable && sd->seekable;
  53   ret->stream_pts = MP_NOPTS_VALUE;
  54
  55   ret->video = vd->video;
  56   ret->audio = ad->audio;
  57   ret->sub = sd->sub;
  58   if (sd && sd != vd && sd != ad) sd->sub->non_interleaved = 1;
  59
  60   // without these, demux_demuxers_fill_buffer will never be called,
  61   // but they break the demuxer-specific code in video.c
  62 #if 0
  63   if (vd) vd->video->demuxer = ret;
  64   if (ad) ad->audio->demuxer = ret;
  65   if (sd) sd->sub->demuxer = ret;
  66
  67   // HACK?, necessary for subtitle (and audio and video when implemented) switching
  68   memcpy(ret->v_streams, vd->v_streams, sizeof(ret->v_streams));
  69   memcpy(ret->a_streams, ad->a_streams, sizeof(ret->a_streams));
  70   memcpy(ret->s_streams, sd->s_streams, sizeof(ret->s_streams));
  71 #endif
  72
  73   ret->desc = &demuxer_desc_demuxers;
  74
  75   return ret;
  76 }
  77
  78 static int demux_demuxers_fill_buffer(demuxer_t *demux,demux_stream_t *ds) {
  79   dd_priv_t* priv;
  80
  81   priv=demux->priv;
  82
  83   // HACK: make sure the subtitles get properly interleaved if with -subfile
  84   if (priv->sd && priv->sd->sub != ds &&
  85       priv->sd != priv->vd && priv->sd != priv->ad)
  86     ds_get_next_pts(priv->sd->sub);
  87   if(priv->vd && priv->vd->video == ds)
  88     return demux_fill_buffer(priv->vd,ds);
  89   else if(priv->ad && priv->ad->audio == ds)
  90     return demux_fill_buffer(priv->ad,ds);
  91   else if(priv->sd && priv->sd->sub == ds)
  92     return demux_fill_buffer(priv->sd,ds);
  93
  94   mp_tmsg(MSGT_DEMUX,MSGL_WARN,"fill_buffer error: bad demuxer: not vd, ad or sd.\n");
  95   return 0;
  96 }
  97
  98 static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags) {
  99   dd_priv_t* priv;
 100   float pos;
 101   priv=demuxer->priv;
 102
 103   priv->ad->stream->eof = 0;
 104   priv->sd->stream->eof = 0;
 105
 106   // Seek video
 107   demux_seek(priv->vd,rel_seek_secs,audio_delay,flags);
 108   // Get the new pos
 109   pos = demuxer->video->pts;
 110   if (pos == MP_NOPTS_VALUE) {
 111     demux_fill_buffer(priv->vd, demuxer->video);
 112     if (demuxer->video->first)
 113       pos = demuxer->video->first->pts;
 114   }
 115
 116   if(priv->ad != priv->vd && demuxer->audio->sh) {
 117     sh_audio_t* sh = demuxer->audio->sh;
 118     demux_seek(priv->ad,pos,audio_delay,1);
 119     // In case the demuxer don't set pts
 120     if(!demuxer->audio->pts)
 121       demuxer->audio->pts = pos-((ds_tell_pts(demuxer->audio)-sh->a_in_buffer_len)/(float)sh->i_bps);
 122   }
 123
 124   if(priv->sd != priv->vd)
 125       demux_seek(priv->sd,pos,audio_delay,1);
 126
 127 }
 128
 129 static void demux_close_demuxers(demuxer_t* demuxer) {
 130   dd_priv_t* priv = demuxer->priv;
 131   stream_t *s;
 132
 133   if(priv->vd)
 134     free_demuxer(priv->vd);
 135   if(priv->ad && priv->ad != priv->vd) {
 136     // That's a hack to free the audio file stream
 137     // It's ok atm but we shouldn't free that here
 138     s = priv->ad->stream;
 139     free_demuxer(priv->ad);
 140     free_stream(s);
 141   } if(priv->sd && priv->sd != priv->vd && priv->sd != priv->ad) {
 142     s = priv->sd->stream;
 143     free_demuxer(priv->sd);
 144     free_stream(s);
 145   }
 146
 147   free(priv);
 148 }
 149
 150
 151 static int demux_demuxers_control(demuxer_t *demuxer,int cmd, void *arg){
 152   dd_priv_t* priv = demuxer->priv;
 153   switch (cmd) {
 154     case DEMUXER_CTRL_GET_TIME_LENGTH:
 155     case DEMUXER_CTRL_GET_PERCENT_POS:
 156       return demux_control(priv->vd, cmd, arg);
 157   }
 158   return DEMUXER_CTRL_NOTIMPL;
 159 }
 160
 161 const demuxer_desc_t demuxer_desc_demuxers = {
 162   "Demuxers demuxer",
 163   "", // Not selectable
 164   "",
 165   "?",
 166   "internal use only",
 167   DEMUXER_TYPE_DEMUXERS,
 168   0, // no autodetect
 169   NULL,
 170   demux_demuxers_fill_buffer,
 171   NULL,
 172   demux_close_demuxers,
 173   demux_demuxers_seek,
 174   demux_demuxers_control
 175 };