demuxer.c

自己移植的linux下的流媒体播放器原代码,支持mms协议,支持ftp和http协议.

    // check for the FLI file magic number
    if((id==0xAF11) || (id==0xAF12)){ 
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"FLI");
      file_format=DEMUXER_TYPE_FLI;
    } else {
      free_demuxer(demuxer);
      demuxer = NULL;
    }
  }
}
//=============== Try to open as FILM file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_FILM){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_FILM,audio_id,video_id,dvdsub_id);
  {
    int signature=stream_read_fourcc(demuxer->stream);
    // check for the FLI file magic number
    if(signature==mmioFOURCC('F', 'I', 'L', 'M')){ 
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"FILM");
      file_format=DEMUXER_TYPE_FILM;
    } else {
      free_demuxer(demuxer);
      demuxer = NULL;
    }
  }
}
//=============== Try to open as RoQ file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_ROQ){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_ROQ,audio_id,video_id,dvdsub_id);
  if(roq_check_file(demuxer)){
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"ROQ");
      file_format=DEMUXER_TYPE_ROQ;
  } else {
      free_demuxer(demuxer);
      demuxer = NULL;
  }
}
#ifdef HAVE_GIF
//=============== Try to open as GIF file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_GIF){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_GIF,audio_id,video_id,dvdsub_id);
  if(gif_check_file(demuxer)){
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"GIF");
      file_format=DEMUXER_TYPE_GIF;
  } else {
      free_demuxer(demuxer);
      demuxer = NULL;
  }
}
#endif
#ifdef HAVE_OGGVORBIS
//=============== Try to open as Ogg file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_OGG){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_OGG,audio_id,video_id,dvdsub_id);
  if(demux_ogg_open(demuxer)){
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"Ogg");
      file_format=DEMUXER_TYPE_OGG;
  } else {
      free_demuxer(demuxer);
      demuxer = NULL;
  }
}
#endif
#ifdef USE_WIN32DLL
//=============== Try to open as Avisynth file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_AVS){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_AVS,audio_id,video_id,dvdsub_id);
  if (avs_check_file(demuxer, filename)){
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"AVS");
      file_format=DEMUXER_TYPE_AVS;
  } else {
      free_demuxer(demuxer);
      demuxer = NULL;
  }
}
#endif
//=============== Try to open as PVA file: =================
if(file_format == DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_PVA){
	demuxer=new_demuxer(stream,DEMUXER_TYPE_PVA,audio_id,video_id,dvdsub_id);
	if(pva_check_file(demuxer)) {
		mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"PVA");
		file_format=DEMUXER_TYPE_PVA;
	} else {
		free_demuxer(demuxer);
		demuxer=NULL;
	}
}
//=============== Try to open as MPEG-TS file: =================
if(file_format == DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_MPEG_TS){
	demuxer=new_demuxer(stream,DEMUXER_TYPE_MPEG_TS,audio_id,video_id,dvdsub_id);
	if(ts_check_file(demuxer)) {
		mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"TS");
		file_format=DEMUXER_TYPE_MPEG_TS;
	} else {
		free_demuxer(demuxer);
		demuxer=NULL;
	}
}
//=============== Try to open as LMLM4 file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_LMLM4){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_LMLM4,audio_id,video_id,dvdsub_id);
  if(lmlm4_check_file(demuxer)){
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"RAW LMLM4");
      file_format=DEMUXER_TYPE_LMLM4;
  } else {
      free_demuxer(demuxer);
      demuxer = NULL;
  }
}
//=============== Try to open as MPEG-PS file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_MPEG_PS){
 int pes=1;
 int tmp;
 off_t tmppos;
 file_format=DEMUXER_TYPE_UNKNOWN;
 while(pes>=0){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_MPEG_PS,audio_id,video_id,dvdsub_id);
  
  // try to pre-detect PES:
  tmppos=stream_tell(demuxer->stream);
  tmp=stream_read_dword(demuxer->stream);
  if(tmp==0x1E0 || tmp==0x1C0){
      tmp=stream_read_word(demuxer->stream);
      if(tmp>1 && tmp<=2048) pes=0; // demuxer->synced=3; // PES...
  }
  stream_seek(demuxer->stream,tmppos);
  
  if(!pes) demuxer->synced=3; // hack!

  num_elementary_packets100=0;
  num_elementary_packets101=0;
  num_elementary_packets1B6=0;
  num_elementary_packets12x=0;
  num_elementary_packetsPES=0;
  num_h264_slice=0; //combined slice
  num_h264_dpa=0; //DPA Slice
  num_h264_dpb=0; //DPB Slice
  num_h264_dpc=0; //DPC Slice
  num_h264_idr=0; //IDR Slice
  num_h264_sps=0;
  num_h264_pps=0;
  num_mp3audio_packets=0;

  if(demux_mpg_open(demuxer)){
    if(!pes)
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"MPEG-PES");
    else
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"MPEG-PS");
    file_format=DEMUXER_TYPE_MPEG_PS;
  } else {
    mp_msg(MSGT_DEMUX,MSGL_V,"MPEG packet stats: p100: %d  p101: %d p1B6: %d p12x: %d sli: %d a: %d b: %d c: %d idr: %d sps: %d pps: %d PES: %d  MP3: %d \n",
	num_elementary_packets100,num_elementary_packets101,
	num_elementary_packets1B6,num_elementary_packets12x,
	num_h264_slice, num_h264_dpa,
	num_h264_dpb, num_h264_dpc=0,
	num_h264_idr,  num_h264_sps=0,
	num_h264_pps,
	num_elementary_packetsPES,num_mp3audio_packets);
//MPEG packet stats: p100: 458  p101: 458  PES: 0  MP3: 1103  (.m2v)
    if(num_mp3audio_packets>50 && num_mp3audio_packets>2*num_elementary_packets100
	&& abs(num_elementary_packets100-num_elementary_packets101)>2)
	break; // it's .MP3
    // some hack to get meaningfull error messages to our unhappy users:
    if(num_elementary_packets100>=2 && num_elementary_packets101>=2 &&
       abs(num_elementary_packets101+8-num_elementary_packets100)<16){
      if(num_elementary_packetsPES>=4 && num_elementary_packetsPES>=num_elementary_packets100-4){
        --pes;continue; // tricky...
      }
      file_format=DEMUXER_TYPE_MPEG_ES; //  <-- hack is here :)
    } else 
#if 1
    // fuzzy mpeg4-es detection. do NOT enable without heavy testing of mpeg formats detection!
    if(num_elementary_packets1B6>3 && num_elementary_packets12x>=1 &&
       num_elementary_packetsPES==0 && num_elementary_packets100<=num_elementary_packets12x &&
       demuxer->synced<2){
      file_format=DEMUXER_TYPE_MPEG4_ES;
    } else
#endif
#if 1
    // fuzzy h264-es detection. do NOT enable without heavy testing of mpeg formats detection!
    if((num_h264_slice>3 || (num_h264_dpa>3 && num_h264_dpb>3 && num_h264_dpc>3)) && 
       /* FIXME num_h264_sps>=1 && */ num_h264_pps>=1 && num_h264_idr>=1 &&
       num_elementary_packets1B6==0 && num_elementary_packetsPES==0 &&
       demuxer->synced<2){
      file_format=DEMUXER_TYPE_H264_ES;
    } else
#endif
    {
      if(demuxer->synced==2)
        mp_msg(MSGT_DEMUXER,MSGL_ERR,"MPEG: " MSGTR_MissingVideoStreamBug);
      else
        mp_msg(MSGT_DEMUXER,MSGL_V,MSGTR_NotSystemStream);
    }
    if (demuxer && file_format != DEMUXER_TYPE_MPEG_PS) {
      free_demuxer(demuxer);
      demuxer = NULL;
    }
  }
  break;
 }
}
//=============== Try to open as MPEG-ES file: =================
if(file_format==DEMUXER_TYPE_MPEG_ES || file_format==DEMUXER_TYPE_MPEG4_ES  || file_format==DEMUXER_TYPE_H264_ES){ // little hack, see above!
  demuxer=new_demuxer(stream,file_format,audio_id,video_id,dvdsub_id);
  if(!ds_fill_buffer(demuxer->video)){
    mp_msg(MSGT_DEMUXER,MSGL_ERR,MSGTR_InvalidMPEGES);
    file_format=DEMUXER_TYPE_UNKNOWN;
    free_demuxer(demuxer);
    demuxer = NULL;
  } else {
    switch(file_format){
    case DEMUXER_TYPE_MPEG_ES: 
        mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat, "MPEG-ES"); break;
    case DEMUXER_TYPE_MPEG4_ES: 
        mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat, "MPEG4-ES"); break;
    case DEMUXER_TYPE_H264_ES: 
        mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat, "H264-ES"); break;
    }
  }
}
#ifdef HAVE_LIBDV095
//=============== Try to open raw DV file, as produced by dvgrab --format raw =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_RAWDV)
{
   demuxer=new_demuxer(stream,DEMUXER_TYPE_RAWDV,audio_id,video_id,dvdsub_id);
   if(rawdv_check_file(demuxer))
   {
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"RAWDV");
      file_format=DEMUXER_TYPE_RAWDV;
   }
   else {
      free_demuxer(demuxer);
      demuxer=NULL;
   }
}
#endif
//=============== Try to open as audio file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_AUDIO){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_AUDIO,audio_id,video_id,dvdsub_id);
  if(demux_audio_open(demuxer)){
    mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_DetectedAudiofile);
    file_format=DEMUXER_TYPE_AUDIO;
  } else {
    free_demuxer(demuxer);
    demuxer = NULL;
  }
}
#ifdef HAVE_XMMS
//=============== Try to open as XMMS file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_XMMS){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_XMMS,audio_id,video_id,dvdsub_id);
  if(demux_xmms_open(demuxer)){
    mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_DetectedAudiofile);
    file_format=DEMUXER_TYPE_XMMS;
  } else {
    free_demuxer(demuxer);
    demuxer = NULL;
  }
}
#endif
/*//=============== Try to open as MPEG-TY file: =================
if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_MPEG_TY)
{
  demuxer=new_demuxer(stream,DEMUXER_TYPE_MPEG_TY,audio_id,video_id,dvdsub_id);
  if(ds_fill_buffer(demuxer->video)){
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"TiVo");
      file_format=DEMUXER_TYPE_MPEG_TY;
  } else {
      free_demuxer(demuxer);
      demuxer = NULL;
  }
}
*///=============== Try to open as a RTP stream: ===========
 if(file_format==DEMUXER_TYPE_RTP) {
   demuxer=new_demuxer(stream,DEMUXER_TYPE_RTP,audio_id,video_id,dvdsub_id);
 }
//=============== Try to open with LAVF: =================
#ifdef USE_LIBAVFORMAT
 if(file_format==DEMUXER_TYPE_UNKNOWN || file_format==DEMUXER_TYPE_LAVF){
  demuxer=new_demuxer(stream,DEMUXER_TYPE_LAVF,audio_id,video_id,dvdsub_id);
  if(lavf_check_file(demuxer)){
      mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_Detected_XXX_FileFormat,"libavformat"); //FIXME print format
      file_format=DEMUXER_TYPE_LAVF;
  } else {
      free_demuxer(demuxer);
      demuxer = NULL;
  }
}
#endif
//=============== Unknown, exiting... ===========================
if(file_format==DEMUXER_TYPE_UNKNOWN || demuxer == NULL){
  //mp_msg(MSGT_DEMUXER,MSGL_ERR,MSGTR_FormatNotRecognized); // will be done by mplayer.c after fallback to playlist-parsing
  return NULL;
}
//====== File format recognized, set up these for compatibility: =========
d_audio=demuxer->audio;
d_video=demuxer->video;
//d_dvdsub=demuxer->sub;

demuxer->file_format=file_format;

switch(file_format){
#ifdef HAVE_LIBDV095
 case DEMUXER_TYPE_RAWDV:
 {
   if (!demux_open_rawdv(demuxer)) return NULL;
   break;
 }
#endif
 case DEMUXER_TYPE_RAWAUDIO: {
   demux_rawaudio_open(demuxer);
   break;
 }
 case DEMUXER_TYPE_RAWVIDEO: {
   demux_rawvideo_open(demuxer);
   break;
 }
 case DEMUXER_TYPE_MF: {
  if (!demux_open_mf(demuxer)) return NULL;
  break;
 }
 case DEMUXER_TYPE_FLI: {
  if (!demux_open_fli(demuxer)) return NULL;
  break;
 }
 case DEMUXER_TYPE_FILM: {
  if (!demux_open_film(demuxer)) return NULL;
  break;
 }
#ifdef HAVE_GIF
 case DEMUXER_TYPE_GIF: {
  if (!demux_open_gif(demuxer)) return NULL;
  break;
 }
#endif
 case DEMUXER_TYPE_ROQ: {
  if (!demux_open_roq(demuxer)) return NULL;
  break;
 }
 case DEMUXER_TYPE_SMJPEG: {
  if (!demux_open_smjpeg(demuxer)) return NULL;
  break;
 }
// case DEMUXER_TYPE_MOV: {
//  if(!mov_read_header(demuxer)) return NULL;
//  sh_video=d_video->sh;if(sh_video) sh_video->ds=d_video;
//  sh_audio=d_audio->sh;if(sh_audio) sh_audio->ds=d_audio;
//  break;
// }
 case DEMUXER_TYPE_AVI: {
   sh_audio_t* sh_a;
   demuxer = (demuxer_t*) demux_open_avi(demuxer);
   if(!demuxer) return NULL; // failed to open
   sh_a = (sh_audio_t*)demuxer->audio->sh;
   if(demuxer->audio->id != -2 && sh_a) {
#ifdef HAVE_OGGVORBIS
    // support for Ogg-in-AVI:
     if(sh_a->format == 0xFFFE)
       demuxer = init_avi_with_ogg(demuxer);
     else if(sh_a->format == 0x674F) {
       stream_t* s;
       demuxer_t  *od;
       s = new_ds_stream(demuxer->audio);
       od = new_demuxer(s,DEMUXER_TYPE_OGG,-1,-2,-2);
       if(!demux_ogg_open(od)) {
	 mp_msg( MSGT_DEMUXER,MSGL_ERR,MSGTR_ErrorOpeningOGGDemuxer);
	 free_stream(s);
	 demuxer->audio->id = -2;
       } else
	 demuxer = new_demuxers_demuxer(demuxer,od,demuxer);
     }
#endif
   }       
   return demuxer;
//  break;
 }
 case DEMUXER_TYPE_NSV: {
  demux_open_nsv(demuxer);
  break;
 }
 case DEMUXER_TYPE_NUV: {
  demux_open_nuv(demuxer);
  break;
 }
 case DEMUXER_TYPE_VIVO: {
  demux_open_vivo(demuxer);
  break;
 }
 case DEMUXER_TYPE_PVA: {
  demux_open_pva(demuxer);
  break;
 }
 case DEMUXER_TYPE_Y4M: {
  demux_open_y4m(demuxer);
  break;
 }
 case DEMUXER_TYPE_LMLM4: {
  demux_open_lmlm4(demuxer);
  if(!ds_fill_buffer(d_video)){
    mp_msg(MSGT_DEMUXER,MSGL_INFO,"LMLM4: " MSGTR_MissingVideoStream);
    sh_video=NULL;
  } else {
    sh_video=d_video->sh;sh_video->ds=d_video;
  }
  if(audio_id!=-2) {
   if(!ds_fill_buffer(d_audio)){
    mp_msg(MSGT_DEMUXER,MSGL_INFO,"LMLM4: " MSGTR_MissingAudioStream);
    sh_audio=NULL;
   } else {
    sh_audio=d_audio->sh;sh_audio->ds=d_audio;
   }
  }
  break;
 }
 case DEMUXER_TYPE_REAL: {
  demux_open_real(demuxer);
  break;
 }
 case DEMUXER_TYPE_ASF: {
  //---- ASF header:
  read_asf_header(demuxer);
  stream_reset(demuxer->stream);
  stream_seek(demuxer->stream,demuxer->movi_start);
//  demuxer->idx_pos=0;
//  demuxer->endpos=avi_header.movi_end;
  if(d_video->id != -2) {
    if(!ds_fill_buffer(d_video)){
      mp_msg(MSGT_DEMUXER,MSGL_WARN,"ASF: " MSGTR_MissingVideoStream);
      sh_video=NULL;
      //printf("ASF: missing video stream!? contact the author, it may be a bug :(\n");
    } else {
      sh_video=d_video->sh;sh_video->ds=d_video;
      sh_video->fps=1000.0f; sh_video->frametime=0.001f; // 1ms
      //      sh_video->i_bps=10*asf_packetsize; // FIXME!
    }
  }
  if(d_audio->id!=-2){
    mp_msg(MSGT_DEMUXER,MSGL_V,MSGTR_ASFSearchingForAudioStream,d_audio->id);
    if(!ds_fill_buffer(d_audio)){
      mp_msg(MSGT_DEMUXER,MSGL_INFO,"ASF: " MSGTR_MissingAudioStream);
      sh_audio=NULL;
    } else {
      sh_audio=d_audio->sh;sh_audio->ds=d_audio;
      sh_audio->format=sh_audio->wf->wFormatTag;
    }
  }
  break;
 }