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 #include "help_mp.h"
  22
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include "stream/stream.h"
  26 #include "demuxer.h"
  27 #include "stheader.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 = calloc(1,sizeof(demuxer_t));
  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
  54   ret->video = vd->video;
  55   ret->audio = ad->audio;
  56   ret->sub = sd->sub;
  57
  58   // HACK?, necessary for subtitle (and audio and video when implemented) switching
  59   memcpy(ret->v_streams, vd->v_streams, sizeof(ret->v_streams));
  60   memcpy(ret->a_streams, ad->a_streams, sizeof(ret->a_streams));
  61   memcpy(ret->s_streams, sd->s_streams, sizeof(ret->s_streams));
  62
  63   ret->desc = &demuxer_desc_demuxers;
  64
  65   return ret;
  66 }
  67
  68 static int demux_demuxers_fill_buffer(demuxer_t *demux,demux_stream_t *ds) {
  69   dd_priv_t* priv;
  70
  71   priv=demux->priv;
  72
  73   if(ds->demuxer == priv->vd)
  74     return demux_fill_buffer(priv->vd,ds);
  75   else if(ds->demuxer == priv->ad)
  76     return demux_fill_buffer(priv->ad,ds);
  77   else if(ds->demuxer == priv->sd)
  78     return demux_fill_buffer(priv->sd,ds);
  79
  80   mp_msg(MSGT_DEMUX,MSGL_WARN,MSGTR_MPDEMUX_DEMUXERS_FillBufferError);
  81   return 0;
  82 }
  83
  84 static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags) {
  85   dd_priv_t* priv;
  86   float pos;
  87   priv=demuxer->priv;
  88
  89   priv->ad->stream->eof = 0;
  90   priv->sd->stream->eof = 0;
  91
  92   // Seek video
  93   demux_seek(priv->vd,rel_seek_secs,audio_delay,flags);
  94   // Get the new pos
  95   pos = demuxer->video->pts;
  96   if (!pos) {
  97     demux_fill_buffer(priv->vd, demuxer->video);
  98     if (demuxer->video->first)
  99       pos = demuxer->video->first->pts;
 100   }
 101
 102   if(priv->ad != priv->vd) {
 103     sh_audio_t* sh = demuxer->audio->sh;
 104     demux_seek(priv->ad,pos,audio_delay,1);
 105     // In case the demuxer don't set pts
 106     if(!demuxer->audio->pts)
 107       demuxer->audio->pts = pos-((ds_tell_pts(demuxer->audio)-sh->a_in_buffer_len)/(float)sh->i_bps);
 108   }
 109
 110   if(priv->sd != priv->vd)
 111       demux_seek(priv->sd,pos,audio_delay,1);
 112
 113 }
 114
 115 static void demux_close_demuxers(demuxer_t* demuxer) {
 116   dd_priv_t* priv = demuxer->priv;
 117   stream_t *s;
 118
 119   if(priv->vd)
 120     free_demuxer(priv->vd);
 121   if(priv->ad && priv->ad != priv->vd) {
 122     // That's a hack to free the audio file stream
 123     // It's ok atm but we shouldn't free that here
 124     s = priv->ad->stream;
 125     free_demuxer(priv->ad);
 126     free_stream(s);
 127   } if(priv->sd && priv->sd != priv->vd && priv->sd != priv->ad) {
 128     s = priv->sd->stream;
 129     free_demuxer(priv->sd);
 130     free_stream(s);
 131   }
 132
 133   free(priv);
 134 }
 135
 136
 137 static int demux_demuxers_control(demuxer_t *demuxer,int cmd, void *arg){
 138   dd_priv_t* priv = demuxer->priv;
 139   switch (cmd) {
 140     case DEMUXER_CTRL_GET_TIME_LENGTH:
 141       *((double *)arg) = demuxer_get_time_length(priv->vd);
 142       return DEMUXER_CTRL_OK;
 143     case DEMUXER_CTRL_GET_PERCENT_POS:
 144       *((int *)arg) = demuxer_get_percent_pos(priv->vd);
 145       return DEMUXER_CTRL_OK;
 146   }
 147   return DEMUXER_CTRL_NOTIMPL;
 148 }
 149
 150 const demuxer_desc_t demuxer_desc_demuxers = {
 151   "Demuxers demuxer",
 152   "", // Not selectable
 153   "",
 154   "?",
 155   "internal use only",
 156   DEMUXER_TYPE_DEMUXERS,
 157   0, // no autodetect
 158   NULL,
 159   demux_demuxers_fill_buffer,
 160   NULL,
 161   demux_close_demuxers,
 162   demux_demuxers_seek,
 163   demux_demuxers_control
 164 };