libmpdemux/demux_demuxers.c

   1
   2 #include "config.h"
   3 #include "mp_msg.h"
   4 #include "help_mp.h"
   5
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8 #include "stream.h"
   9 #include "demuxer.h"
  10 #include "stheader.h"
  11
  12 typedef struct dd_priv {
  13   demuxer_t* vd;
  14   demuxer_t* ad;
  15   demuxer_t* sd;
  16 } dd_priv_t;
  17
  18 extern demuxer_desc_t demuxer_desc_demuxers;
  19
  20 demuxer_t*  new_demuxers_demuxer(demuxer_t* vd, demuxer_t* ad, demuxer_t* sd) {
  21   demuxer_t* ret;
  22   dd_priv_t* priv;
  23
  24   ret = calloc(1,sizeof(demuxer_t));
  25
  26   priv = malloc(sizeof(dd_priv_t));
  27   priv->vd = vd;
  28   priv->ad = ad;
  29   priv->sd = sd;
  30   ret->priv = priv;
  31
  32   ret->type = ret->file_format = DEMUXER_TYPE_DEMUXERS;
  33   // Video is the most important :-)
  34   ret->stream = vd->stream;
  35   ret->seekable = vd->seekable && ad->seekable && sd->seekable;
  36
  37   ret->video = vd->video;
  38   ret->audio = ad->audio;
  39   ret->sub = sd->sub;
  40
  41   ret->desc = &demuxer_desc_demuxers;
  42
  43   return ret;
  44 }
  45
  46 static int demux_demuxers_fill_buffer(demuxer_t *demux,demux_stream_t *ds) {
  47   dd_priv_t* priv;
  48
  49   priv=demux->priv;
  50
  51   if(ds->demuxer == priv->vd)
  52     return demux_fill_buffer(priv->vd,ds);
  53   else if(ds->demuxer == priv->ad)
  54     return demux_fill_buffer(priv->ad,ds);
  55   else if(ds->demuxer == priv->sd)
  56     return demux_fill_buffer(priv->sd,ds);
  57
  58   mp_msg(MSGT_DEMUX,MSGL_WARN,MSGTR_MPDEMUX_DEMUXERS_FillBufferError);
  59   return 0;
  60 }
  61
  62 static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags) {
  63   dd_priv_t* priv;
  64   float pos;
  65   priv=demuxer->priv;
  66
  67   priv->ad->stream->eof = 0;
  68   priv->sd->stream->eof = 0;
  69
  70   // Seek video
  71   demux_seek(priv->vd,rel_seek_secs,audio_delay,flags);
  72   // Get the new pos
  73   pos = demuxer->video->pts;
  74   if (!pos) {
  75     demux_fill_buffer(priv->vd, demuxer->video);
  76     if (demuxer->video->first)
  77       pos = demuxer->video->first->pts;
  78   }
  79
  80   if(priv->ad != priv->vd) {
  81     sh_audio_t* sh = (sh_audio_t*)demuxer->audio->sh;
  82     demux_seek(priv->ad,pos,audio_delay,1);
  83     // In case the demuxer don't set pts
  84     if(!demuxer->audio->pts)
  85       demuxer->audio->pts = pos-((ds_tell_pts(demuxer->audio)-sh->a_in_buffer_len)/(float)sh->i_bps);
  86   }
  87
  88   if(priv->sd != priv->vd)
  89       demux_seek(priv->sd,pos,audio_delay,1);
  90
  91 }
  92
  93 static void demux_close_demuxers(demuxer_t* demuxer) {
  94   dd_priv_t* priv = demuxer->priv;
  95   stream_t *s;
  96
  97   if(priv->vd)
  98     free_demuxer(priv->vd);
  99   if(priv->ad && priv->ad != priv->vd) {
 100     // That's a hack to free the audio file stream
 101     // It's ok atm but we shouldn't free that here
 102     s = priv->ad->stream;
 103     free_demuxer(priv->ad);
 104     free_stream(s);
 105   } if(priv->sd && priv->sd != priv->vd && priv->sd != priv->ad) {
 106     s = priv->sd->stream;
 107     free_demuxer(priv->sd);
 108     free_stream(s);
 109   }
 110
 111   free(priv);
 112 }
 113
 114
 115 static int demux_demuxers_control(demuxer_t *demuxer,int cmd, void *arg){
 116   dd_priv_t* priv = demuxer->priv;
 117   switch (cmd) {
 118     case DEMUXER_CTRL_GET_TIME_LENGTH:
 119       *((double *)arg) = demuxer_get_time_length(priv->vd);
 120       return DEMUXER_CTRL_OK;
 121     case DEMUXER_CTRL_GET_PERCENT_POS:
 122       *((int *)arg) = demuxer_get_percent_pos(priv->vd);
 123       return DEMUXER_CTRL_OK;
 124   }
 125   return DEMUXER_CTRL_NOTIMPL;
 126 }
 127
 128 demuxer_desc_t demuxer_desc_demuxers = {
 129   "Demuxers demuxer",
 130   "", // Not selectable
 131   "",
 132   "?",
 133   "internal use only",
 134   DEMUXER_TYPE_DEMUXERS,
 135   0, // no autodetect
 136   NULL,
 137   demux_demuxers_fill_buffer,
 138   NULL,
 139   demux_close_demuxers,
 140   demux_demuxers_seek,
 141   demux_demuxers_control
 142 };