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
  54   ret->video = vd->video;
  55   ret->audio = ad->audio;
  56   ret->sub = sd->sub;
  57   if (sd && sd != vd && sd != ad) sd->sub->non_interleaved = 1;
  58
  59   // without these, demux_demuxers_fill_buffer will never be called,
  60   // but they break the demuxer-specific code in video.c
  61 #if 0
  62   if (vd) vd->video->demuxer = ret;
  63   if (ad) ad->audio->demuxer = ret;
  64   if (sd) sd->sub->demuxer = ret;
  65 #endif
  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
  72   ret->desc = &demuxer_desc_demuxers;
  73
  74   return ret;
  75 }
  76
  77 static int demux_demuxers_fill_buffer(demuxer_t *demux,demux_stream_t *ds) {
  78   dd_priv_t* priv;
  79
  80   priv=demux->priv;
  81
  82   // HACK: make sure the subtitles get properly interleaved if with -subfile
  83   if (priv->sd && priv->sd->sub != ds &&
  84       priv->sd != priv->vd && priv->sd != priv->ad)
  85     ds_get_next_pts(priv->sd->sub);
  86   if(priv->vd && priv->vd->video == ds)
  87     return demux_fill_buffer(priv->vd,ds);
  88   else if(priv->ad && priv->ad->audio == ds)
  89     return demux_fill_buffer(priv->ad,ds);
  90   else if(priv->sd && priv->sd->sub == ds)
  91     return demux_fill_buffer(priv->sd,ds);
  92
  93   mp_tmsg(MSGT_DEMUX,MSGL_WARN,"fill_buffer error: bad demuxer: not vd, ad or sd.\n");
  94   return 0;
  95 }
  96
  97 static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags) {
  98   dd_priv_t* priv;
  99   float pos;
 100   priv=demuxer->priv;
 101
 102   priv->ad->stream->eof = 0;
 103   priv->sd->stream->eof = 0;
 104
 105   // Seek video
 106   demux_seek(priv->vd,rel_seek_secs,audio_delay,flags);
 107   // Get the new pos
 108   pos = demuxer->video->pts;
 109   if (!pos) {
 110     demux_fill_buffer(priv->vd, demuxer->video);
 111     if (demuxer->video->first)
 112       pos = demuxer->video->first->pts;
 113   }
 114
 115   if(priv->ad != priv->vd) {
 116     sh_audio_t* sh = demuxer->audio->sh;
 117     demux_seek(priv->ad,pos,audio_delay,1);
 118     // In case the demuxer don't set pts
 119     if(!demuxer->audio->pts)
 120       demuxer->audio->pts = pos-((ds_tell_pts(demuxer->audio)-sh->a_in_buffer_len)/(float)sh->i_bps);
 121   }
 122
 123   if(priv->sd != priv->vd)
 124       demux_seek(priv->sd,pos,audio_delay,1);
 125
 126 }
 127
 128 static void demux_close_demuxers(demuxer_t* demuxer) {
 129   dd_priv_t* priv = demuxer->priv;
 130   stream_t *s;
 131
 132   if(priv->vd)
 133     free_demuxer(priv->vd);
 134   if(priv->ad && priv->ad != priv->vd) {
 135     // That's a hack to free the audio file stream
 136     // It's ok atm but we shouldn't free that here
 137     s = priv->ad->stream;
 138     free_demuxer(priv->ad);
 139     free_stream(s);
 140   } if(priv->sd && priv->sd != priv->vd && priv->sd != priv->ad) {
 141     s = priv->sd->stream;
 142     free_demuxer(priv->sd);
 143     free_stream(s);
 144   }
 145
 146   free(priv);
 147 }
 148
 149
 150 static int demux_demuxers_control(demuxer_t *demuxer,int cmd, void *arg){
 151   dd_priv_t* priv = demuxer->priv;
 152   switch (cmd) {
 153     case DEMUXER_CTRL_GET_TIME_LENGTH:
 154       *((double *)arg) = demuxer_get_time_length(priv->vd);
 155       return DEMUXER_CTRL_OK;
 156     case DEMUXER_CTRL_GET_PERCENT_POS:
 157       *((int *)arg) = demuxer_get_percent_pos(priv->vd);
 158       return DEMUXER_CTRL_OK;
 159   }
 160   return DEMUXER_CTRL_NOTIMPL;
 161 }
 162
 163 const demuxer_desc_t demuxer_desc_demuxers = {
 164   "Demuxers demuxer",
 165   "", // Not selectable
 166   "",
 167   "?",
 168   "internal use only",
 169   DEMUXER_TYPE_DEMUXERS,
 170   0, // no autodetect
 171   NULL,
 172   demux_demuxers_fill_buffer,
 173   NULL,
 174   demux_close_demuxers,
 175   demux_demuxers_seek,
 176   demux_demuxers_control
 177 };