예제 #1
0
파일: demux_fli.c 프로젝트: azuwis/mplayer
static int fli_check_file(demuxer_t* demuxer)
{
  int id;

  stream_seek(demuxer->stream, 4);
  id=stream_read_word_le(demuxer->stream);
  // check for the FLI file magic number
  if((id==0xAF11) || (id==0xAF12))
    return DEMUXER_TYPE_FLI;

  return 0;
}
예제 #2
0
static demuxer_t* demux_open_roq(demuxer_t* demuxer)
{
  sh_video_t *sh_video = NULL;
  sh_audio_t *sh_audio = NULL;

  roq_data_t *roq_data = malloc(sizeof(roq_data_t));
  int chunk_id;
  int chunk_size;
  int chunk_arg;
  int last_chunk_id = 0;
  int largest_audio_chunk = 0;
  int fps;

  roq_data->total_chunks = 0;
  roq_data->current_chunk = 0;
  roq_data->total_video_chunks = 0;
  roq_data->chunks = NULL;

  // position the stream and start traversing
  stream_seek(demuxer->stream, 6);
  fps = stream_read_word_le(demuxer->stream);
  while (!stream_eof(demuxer->stream))
  {
    chunk_id = stream_read_word_le(demuxer->stream);
    chunk_size = stream_read_dword_le(demuxer->stream);
    chunk_arg = stream_read_word_le(demuxer->stream);

    // this is the only useful header info in the file
    if (chunk_id == RoQ_INFO)
    {
      // there should only be one RoQ_INFO chunk per file
      if (sh_video)
      {
        mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Found more than one RoQ_INFO chunk\n");
        stream_skip(demuxer->stream, 8);
      }
      else
      {
        // this is a good opportunity to create a video stream header
        sh_video = new_sh_video(demuxer, 0);
        // make sure the demuxer knows about the new stream header
        demuxer->video->sh = sh_video;
        // make sure that the video demuxer stream header knows about its
        // parent video demuxer stream
        sh_video->ds = demuxer->video;

        sh_video->disp_w = stream_read_word_le(demuxer->stream);
        sh_video->disp_h = stream_read_word_le(demuxer->stream);
        stream_skip(demuxer->stream, 4);

        // custom fourcc for internal MPlayer use
        sh_video->format = mmioFOURCC('R', 'o', 'Q', 'V');

        // constant frame rate
        sh_video->fps = fps;
        sh_video->frametime = 1 / sh_video->fps;
      }
    }
    else if ((chunk_id == RoQ_SOUND_MONO) ||
      (chunk_id == RoQ_SOUND_STEREO))
    {
      // create the audio stream header if it hasn't been created it
      if (sh_audio == NULL)
      {
        // make the header first
        sh_audio = new_sh_audio(demuxer, 0);
        // make sure the demuxer knows about the new stream header
        demuxer->audio->id = 0;
        demuxer->audio->sh = sh_audio;
        // make sure that the audio demuxer stream header knows about its
        // parent audio demuxer stream
        sh_audio->ds = demuxer->audio;

        // go through the bother of making a WAVEFORMATEX structure
        sh_audio->wf = malloc(sizeof(*sh_audio->wf));

        // custom fourcc for internal MPlayer use
        sh_audio->format = mmioFOURCC('R', 'o', 'Q', 'A');
        if (chunk_id == RoQ_SOUND_STEREO)
          sh_audio->wf->nChannels = 2;
        else
          sh_audio->wf->nChannels = 1;
        // always 22KHz, 16-bit
        sh_audio->wf->nSamplesPerSec = 22050;
        sh_audio->wf->wBitsPerSample = 16;
      }

      // index the chunk
      roq_data->chunks = realloc(roq_data->chunks,
        (roq_data->total_chunks + 1) * sizeof (roq_chunk_t));
      roq_data->chunks[roq_data->total_chunks].chunk_type = CHUNK_TYPE_AUDIO;
      roq_data->chunks[roq_data->total_chunks].chunk_offset =
        stream_tell(demuxer->stream) - 8;
      roq_data->chunks[roq_data->total_chunks].chunk_size = chunk_size + 8;
      roq_data->chunks[roq_data->total_chunks].running_audio_sample_count =
        roq_data->total_audio_sample_count;

      // audio housekeeping
      if (chunk_size > largest_audio_chunk)
        largest_audio_chunk = chunk_size;
      roq_data->total_audio_sample_count +=
        (chunk_size / sh_audio->wf->nChannels);

      stream_skip(demuxer->stream, chunk_size);
      roq_data->total_chunks++;
    }
    else if ((chunk_id == RoQ_QUAD_CODEBOOK) ||
      ((chunk_id == RoQ_QUAD_VQ) && (last_chunk_id != RoQ_QUAD_CODEBOOK)))
    {
      // index a new chunk if it's a codebook or quad VQ not following a
      // codebook
      roq_data->chunks = realloc(roq_data->chunks,
        (roq_data->total_chunks + 1) * sizeof (roq_chunk_t));
      roq_data->chunks[roq_data->total_chunks].chunk_type = CHUNK_TYPE_VIDEO;
      roq_data->chunks[roq_data->total_chunks].chunk_offset =
        stream_tell(demuxer->stream) - 8;
      roq_data->chunks[roq_data->total_chunks].chunk_size = chunk_size + 8;
      roq_data->chunks[roq_data->total_chunks].video_chunk_number =
        roq_data->total_video_chunks++;

      stream_skip(demuxer->stream, chunk_size);
      roq_data->total_chunks++;
    }
    else if ((chunk_id == RoQ_QUAD_VQ) && (last_chunk_id == RoQ_QUAD_CODEBOOK))
    {
      // if it's a quad VQ chunk following a codebook chunk, extend the last
      // chunk
      roq_data->chunks[roq_data->total_chunks - 1].chunk_size += (chunk_size + 8);
      stream_skip(demuxer->stream, chunk_size);
    }
    else if (!stream_eof(demuxer->stream))
    {
        mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Unknown RoQ chunk ID: %04X\n", chunk_id);
    }

    last_chunk_id = chunk_id;
  }

  // minimum output buffer size = largest audio chunk * 2, since each byte
  // in the DPCM encoding effectively represents 1 16-bit sample
  // (store it in wf->nBlockAlign for the time being since init_audio() will
  // step on it anyway)
  if (sh_audio)
    sh_audio->wf->nBlockAlign = largest_audio_chunk * 2;

  roq_data->current_chunk = 0;

  demuxer->priv = roq_data;

  stream_reset(demuxer->stream);

  return demuxer;
}
예제 #3
0
void read_avi_header(demuxer_t *demuxer,int index_mode){
sh_audio_t *sh_audio=NULL;
sh_video_t *sh_video=NULL;
int stream_id=-1;
int idxfix_videostream=0;
int idxfix_divx=0;
avi_priv_t* priv=demuxer->priv;
off_t list_end=0;

//---- AVI header:
priv->idx_size=0;
priv->audio_streams=0;
while(1){
  int id=stream_read_dword_le(demuxer->stream);
  unsigned chunksize,size2;
  static int last_fccType=0;
  static int last_fccHandler=0;
  char* hdr=NULL;
  //
  if(stream_eof(demuxer->stream)) break;
  // Imply -forceidx if -saveidx is specified
  if (index_file_save)
    index_mode = 2;
  //
  if(id==mmioFOURCC('L','I','S','T')){
    unsigned len=stream_read_dword_le(demuxer->stream);   // list size
    id=stream_read_dword_le(demuxer->stream);             // list type
    mp_msg(MSGT_HEADER,MSGL_DBG2,"LIST %.4s  len=%u\n",(char *) &id,len);
    if(len >= 4) {
	len -= 4;
	list_end=stream_tell(demuxer->stream)+((len+1)&(~1));
    } else {
	mp_msg(MSGT_HEADER,MSGL_WARN,MSGTR_MPDEMUX_AVIHDR_EmptyList);
	list_end = 0;
    }
    mp_msg(MSGT_HEADER,MSGL_V,"list_end=0x%X\n",(int)list_end);
    if(id==listtypeAVIMOVIE){
      // found MOVI header
      if(!demuxer->movi_start) demuxer->movi_start=stream_tell(demuxer->stream);
      demuxer->movi_end=stream_tell(demuxer->stream)+len;
      mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_FoundMovieAt,(int)demuxer->movi_start,(int)demuxer->movi_end);
      if(demuxer->stream->end_pos>demuxer->movi_end) demuxer->movi_end=demuxer->stream->end_pos;
      if(index_mode==-2 || index_mode==2 || index_mode==0)
        break; // reading from non-seekable source (stdin) or forced index or no index forced
      if(list_end>0) stream_seek(demuxer->stream,list_end); // skip movi
      list_end=0;
    }
    continue;
  }
  size2=stream_read_dword_le(demuxer->stream);
  mp_msg(MSGT_HEADER,MSGL_DBG2,"CHUNK %.4s  len=%u\n",(char *) &id,size2);
  chunksize=(size2+1)&(~1);
  switch(id){

    // Indicates where the subject of the file is archived
    case mmioFOURCC('I','A','R','L'): hdr="Archival Location";break;
    // Lists the artist of the original subject of the file;
    // for example, "Michaelangelo."
    case mmioFOURCC('I','A','R','T'): hdr="Artist";break;
    // Lists the name of the person or organization that commissioned
    // the subject of the file; for example "Pope Julian II."
    case mmioFOURCC('I','C','M','S'): hdr="Commissioned";break;
    // Provides general comments about the file or the subject
    // of the file. If the comment is several sentences long, end each
    // sentence with a period. Do not include new-line characters.
    case mmioFOURCC('I','C','M','T'): hdr="Comments";break;
    // Records the copyright information for the file; for example,
    // "Copyright Encyclopedia International 1991." If there are multiple
    // copyrights, separate them by semicolon followed by a space.
    case mmioFOURCC('I','C','O','P'): hdr="Copyright";break;
    // Describes whether an image has been cropped and, if so, how it
    // was cropped; for example, "lower-right corner."
    case mmioFOURCC('I','C','R','D'): hdr="Creation Date";break;
    // Describes whether an image has been cropped and, if so, how it
    // was cropped; for example, "lower-right corner."
    case mmioFOURCC('I','C','R','P'): hdr="Cropped";break;
    // Specifies the size of the original subject of the file; for
    // example, "8.5 in h, 11 in w."
    case mmioFOURCC('I','D','I','M'): hdr="Dimensions";break;
    // Stores dots per inch setting of the digitizer used to
    // produce the file, such as "300."
    case mmioFOURCC('I','D','P','I'): hdr="Dots Per Inch";break;
    // Stores the of the engineer who worked on the file. If there are
    // multiple engineers, separate the names by a semicolon and a blank;
    // for example, "Smith, John; Adams, Joe."
    case mmioFOURCC('I','E','N','G'): hdr="Engineer";break;
    // Describes the original work, such as "landscape,", "portrait,"
    // "still liefe," etc.
    case mmioFOURCC('I','G','N','R'): hdr="Genre";break;
    // Provides a list of keywords that refer to the file or subject of the
    // file. Separate multiple keywords with a semicolon and a blank;
    // for example, "Seattle, aerial view; scenery."
    case mmioFOURCC('I','K','E','Y'): hdr="Keywords";break;
    // ILGT - Describes the changes in the lightness settings on the digitizer
    // required to produce the file. Note that the format of this information
    // depends on the hardware used.
    case mmioFOURCC('I','L','G','T'): hdr="Lightness";break;
    // IMED - Decribes the original subject of the file, such as
    // "computer image," "drawing," "lithograph," and so on.
    case mmioFOURCC('I','M','E','D'): hdr="Medium";break;
    // INAM - Stores the title of the subject of the file, such as
    // "Seattle from Above."
    case mmioFOURCC('I','N','A','M'): hdr="Title";break;
    // IPLT - Specifies the number of colors requested when digitizing
    // an image, such as "256."
    case mmioFOURCC('I','P','L','T'): hdr="Palette Setting";break;
    // IPRD - Specifies the name of title the file was originally intended
    // for, such as "Encyclopedia of Pacific Northwest Geography."
    case mmioFOURCC('I','P','R','D'): hdr="Product";break;
    // ISBJ - Decsribes the contents of the file, such as
    // "Aerial view of Seattle."
    case mmioFOURCC('I','S','B','J'): hdr="Subject";break;
    // ISFT - Identifies the name of the software packages used to create the
    // file, such as "Microsoft WaveEdit"
    case mmioFOURCC('I','S','F','T'): hdr="Software";break;
    // ISHP - Identifies the change in sharpness for the digitizer
    // required to produce the file (the format depends on the hardware used).
    case mmioFOURCC('I','S','H','P'): hdr="Sharpness";break;
    // ISRC - Identifies the name of the person or organization who
    // suplied the original subject of the file; for example, "Try Research."
    case mmioFOURCC('I','S','R','C'): hdr="Source";break;
    // ISRF - Identifies the original form of the material that was digitized,
    // such as "slide," "paper," "map," and so on. This is not necessarily
    // the same as IMED
    case mmioFOURCC('I','S','R','F'): hdr="Source Form";break;
    // ITCH - Identifies the technician who digitized the subject file;
    // for example, "Smith, John."
    case mmioFOURCC('I','T','C','H'): hdr="Technician";break;
    case mmioFOURCC('I','S','M','P'): hdr="Time Code";break;
    case mmioFOURCC('I','D','I','T'): hdr="Digitization Time";break;

    case ckidAVIMAINHDR:          // read 'avih'
      stream_read(demuxer->stream,(char*) &avih,FFMIN(size2,sizeof(avih)));
      le2me_MainAVIHeader(&avih); // swap to machine endian
      chunksize-=FFMIN(size2,sizeof(avih));
      if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_avih(&avih,MSGL_V); // else print_avih_flags(&avih,MSGL_V);
      break;
    case ckidSTREAMHEADER: {      // read 'strh'
      AVIStreamHeader h;
      stream_read(demuxer->stream,(char*) &h,FFMIN(size2,sizeof(h)));
      le2me_AVIStreamHeader(&h);  // swap to machine endian
      chunksize-=FFMIN(size2,sizeof(h));
      ++stream_id;
      if(h.fccType==streamtypeVIDEO){
        sh_video=new_sh_video(demuxer,stream_id);
        mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_VideoID, "aviheader", stream_id);
        memcpy(&sh_video->video,&h,sizeof(h));
        sh_video->stream_delay = (float)sh_video->video.dwStart * sh_video->video.dwScale/sh_video->video.dwRate;
      } else
      if(h.fccType==streamtypeAUDIO){
        sh_audio=new_sh_audio(demuxer,stream_id);
        mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_AudioID, "aviheader", stream_id);
        memcpy(&sh_audio->audio,&h,sizeof(h));
        sh_audio->stream_delay = (float)sh_audio->audio.dwStart * sh_audio->audio.dwScale/sh_audio->audio.dwRate;
      }
      last_fccType=h.fccType;
      last_fccHandler=h.fccHandler;
      if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_strh(&h,MSGL_V);
      break; }
    case mmioFOURCC('i', 'n', 'd', 'x'): {
      uint32_t i;
      avisuperindex_chunk *s;

      if(!index_mode) break;

      if(chunksize<=24){
        break;
      }
      priv->suidx_size++;
      priv->suidx = realloc_struct(priv->suidx, priv->suidx_size, sizeof (avisuperindex_chunk));
      s = &priv->suidx[priv->suidx_size-1];

      chunksize-=24;
      memcpy(s->fcc, "indx", 4);
      s->dwSize = size2;
      s->wLongsPerEntry = stream_read_word_le(demuxer->stream);
      s->bIndexSubType = stream_read_char(demuxer->stream);
      s->bIndexType = stream_read_char(demuxer->stream);
      s->nEntriesInUse = stream_read_dword_le(demuxer->stream);
      *(uint32_t *)s->dwChunkId = stream_read_dword_le(demuxer->stream);
      stream_read(demuxer->stream, (char *)s->dwReserved, 3*4);
      memset(s->dwReserved, 0, 3*4);

      print_avisuperindex_chunk(s,MSGL_V);

      // Check and fix this useless crap
      if(s->wLongsPerEntry != sizeof (avisuperindex_entry)/4) {
          mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk size: %u\n",s->wLongsPerEntry);
          s->wLongsPerEntry = sizeof(avisuperindex_entry)/4;
      }
      if( ((chunksize/4)/s->wLongsPerEntry) < s->nEntriesInUse){
        mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk\n");
        s->nEntriesInUse = (chunksize/4)/s->wLongsPerEntry;
      }

      s->aIndex = calloc(s->nEntriesInUse, sizeof (avisuperindex_entry));
      s->stdidx = calloc(s->nEntriesInUse, sizeof (avistdindex_chunk));

      // now the real index of indices
      for (i=0; i<s->nEntriesInUse; i++) {
	  chunksize-=16;
	  s->aIndex[i].qwOffset = stream_read_qword_le(demuxer->stream);
	  s->aIndex[i].dwSize = stream_read_dword_le(demuxer->stream);
	  s->aIndex[i].dwDuration = stream_read_dword_le(demuxer->stream);
	  mp_msg (MSGT_HEADER, MSGL_V, "ODML (%.4s): [%d] 0x%016"PRIx64" 0x%04x %u\n",
		  (s->dwChunkId), i,
		  (uint64_t)s->aIndex[i].qwOffset, s->aIndex[i].dwSize, s->aIndex[i].dwDuration);
      }

      break; }
    case ckidSTREAMFORMAT: {      // read 'strf'
      if(last_fccType==streamtypeVIDEO){
        sh_video->bih=calloc(FFMAX(chunksize, sizeof(BITMAPINFOHEADER)), 1);
//        sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
        mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_FoundBitmapInfoHeader,chunksize,sizeof(BITMAPINFOHEADER));
        stream_read(demuxer->stream,(char*) sh_video->bih,chunksize);
	le2me_BITMAPINFOHEADER(sh_video->bih);  // swap to machine endian
	if (sh_video->bih->biSize > chunksize && sh_video->bih->biSize > sizeof(BITMAPINFOHEADER))
		sh_video->bih->biSize = chunksize;
	// fixup MS-RLE header (seems to be broken for <256 color files)
	if(sh_video->bih->biCompression<=1 && sh_video->bih->biSize==40)
	    sh_video->bih->biSize=chunksize;
        if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_video_header(sh_video->bih,MSGL_V);
        chunksize=0;
        sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
        sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
        sh_video->format = sh_video->bih->biCompression;
//        if(demuxer->video->id==-1) demuxer->video->id=stream_id;
        // IdxFix:
        idxfix_videostream=stream_id;
        switch(sh_video->bih->biCompression){
	case mmioFOURCC('M', 'P', 'G', '4'):
	case mmioFOURCC('m', 'p', 'g', '4'):
	case mmioFOURCC('D', 'I', 'V', '1'):
          idxfix_divx=3; // set index recovery mpeg4 flavour: msmpeg4v1
	  mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_RegeneratingKeyfTableForMPG4V1);
	  break;
        case mmioFOURCC('D', 'I', 'V', '3'):
	case mmioFOURCC('d', 'i', 'v', '3'):
	case mmioFOURCC('D', 'I', 'V', '4'):
        case mmioFOURCC('d', 'i', 'v', '4'):
	case mmioFOURCC('D', 'I', 'V', '5'):
	case mmioFOURCC('d', 'i', 'v', '5'):
	case mmioFOURCC('D', 'I', 'V', '6'):
        case mmioFOURCC('d', 'i', 'v', '6'):
	case mmioFOURCC('M', 'P', '4', '3'):
	case mmioFOURCC('m', 'p', '4', '3'):
	case mmioFOURCC('M', 'P', '4', '2'):
	case mmioFOURCC('m', 'p', '4', '2'):
	case mmioFOURCC('D', 'I', 'V', '2'):
        case mmioFOURCC('A', 'P', '4', '1'):
          idxfix_divx=1; // set index recovery mpeg4 flavour: msmpeg4v3
	  mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_RegeneratingKeyfTableForDIVX3);
	  break;
        case mmioFOURCC('D', 'I', 'V', 'X'):
        case mmioFOURCC('d', 'i', 'v', 'x'):
        case mmioFOURCC('D', 'X', '5', '0'):
        case mmioFOURCC('X', 'V', 'I', 'D'):
        case mmioFOURCC('x', 'v', 'i', 'd'):
        case mmioFOURCC('F', 'M', 'P', '4'):
        case mmioFOURCC('f', 'm', 'p', '4'):
          idxfix_divx=2; // set index recovery mpeg4 flavour: generic mpeg4
	  mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_RegeneratingKeyfTableForMPEG4);
	  break;
        }
      } else
      if(last_fccType==streamtypeAUDIO){
	unsigned wf_size = chunksize<sizeof(WAVEFORMATEX)?sizeof(WAVEFORMATEX):chunksize;
        sh_audio->wf=calloc(wf_size,1);
//        sh_audio->wf=malloc(chunksize); memset(sh_audio->wf,0,chunksize);
        mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_FoundWaveFmt,chunksize,sizeof(WAVEFORMATEX));
        stream_read(demuxer->stream,(char*) sh_audio->wf,chunksize);
	le2me_WAVEFORMATEX(sh_audio->wf);
	if (sh_audio->wf->cbSize != 0 &&
	    wf_size < sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize) {
	    sh_audio->wf=realloc(sh_audio->wf, sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize);
	}
	sh_audio->format=sh_audio->wf->wFormatTag;
	if (sh_audio->format == 1 &&
	    last_fccHandler == mmioFOURCC('A', 'x', 'a', 'n'))
	    sh_audio->format = last_fccHandler;
	sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
        chunksize=0;
        if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V);
	++priv->audio_streams;
//        if(demuxer->audio->id==-1) demuxer->audio->id=stream_id;
      }
      break;
    }
    case mmioFOURCC('v', 'p', 'r', 'p'): {
	VideoPropHeader *vprp = malloc(chunksize);
	unsigned int i;
	stream_read(demuxer->stream, (void*)vprp, chunksize);
	le2me_VideoPropHeader(vprp);
	chunksize -= sizeof(*vprp)-sizeof(vprp->FieldInfo);
	chunksize /= sizeof(VIDEO_FIELD_DESC);
	if (vprp->nbFieldPerFrame > chunksize) {
	    vprp->nbFieldPerFrame = chunksize;
	}
	chunksize = 0;
	for (i=0; i<vprp->nbFieldPerFrame; i++) {
		le2me_VIDEO_FIELD_DESC(&vprp->FieldInfo[i]);
	}
	if (sh_video) {
		sh_video->aspect = GET_AVI_ASPECT(vprp->dwFrameAspectRatio);
	}
	if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_vprp(vprp,MSGL_V);
	free(vprp);
	break;
    }
    case mmioFOURCC('d', 'm', 'l', 'h'): {
	// dmlh 00 00 00 04 frms
	unsigned int total_frames = stream_read_dword_le(demuxer->stream);
	mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_FoundAVIV2Header, chunksize, total_frames);
	stream_skip(demuxer->stream, chunksize-4);
	chunksize = 0;
    }
    break;
    case ckidAVINEWINDEX:
    if(demuxer->movi_end>stream_tell(demuxer->stream))
	demuxer->movi_end=stream_tell(demuxer->stream); // fixup movi-end
    if(index_mode && !priv->isodml){
      int i;
      priv->idx_size=size2>>4;
      mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_ReadingIndexBlockChunksForFrames,
        priv->idx_size,avih.dwTotalFrames, (int64_t)stream_tell(demuxer->stream));
      priv->idx=malloc(priv->idx_size<<4);
//      printf("\nindex to %p !!!!! (priv=%p)\n",priv->idx,priv);
      stream_read(demuxer->stream,(char*)priv->idx,priv->idx_size<<4);
      for (i = 0; i < priv->idx_size; i++) {	// swap index to machine endian
	AVIINDEXENTRY *entry=(AVIINDEXENTRY*)priv->idx + i;
	le2me_AVIINDEXENTRY(entry);
	/*
	 * We (ab)use the upper word for bits 32-47 of the offset, so
	 * we'll clear them here.
	 * FIXME: AFAIK no codec uses them, but if one does it will break
	 */
	entry->dwFlags&=0xffff;
      }
      chunksize-=priv->idx_size<<4;
      if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2);
    }
    break;
    /* added May 2002 */
    case mmioFOURCC('R','I','F','F'): {
	char riff_type[4];

	mp_msg(MSGT_HEADER, MSGL_V, MSGTR_MPDEMUX_AVIHDR_AdditionalRIFFHdr);
	stream_read(demuxer->stream, riff_type, sizeof riff_type);
	if (strncmp(riff_type, "AVIX", sizeof riff_type))
	    mp_msg(MSGT_HEADER, MSGL_WARN, MSGTR_MPDEMUX_AVIHDR_WarnNotExtendedAVIHdr);
	else {
		/*
		 * We got an extended AVI header, so we need to switch to
		 * ODML to get seeking to work, provided we got indx chunks
		 * in the header (suidx_size > 0).
		 */
		if (priv->suidx_size > 0)
			priv->isodml = 1;
	}
	chunksize = 0;
	list_end = 0; /* a new list will follow */
	break; }
    case ckidAVIPADDING:
	stream_skip(demuxer->stream, chunksize);
	chunksize = 0;
	break;
  }
  if(hdr){
    mp_msg(MSGT_HEADER,MSGL_V,"hdr=%s  size=%u\n",hdr,size2);
    if(size2==3)
      chunksize=1; // empty
    else {
      char buf[256];
      int len=(size2<250)?size2:250;
      stream_read(demuxer->stream,buf,len);
      chunksize-=len;
      buf[len]=0;
      mp_msg(MSGT_HEADER,MSGL_V,"%-10s: %s\n",hdr,buf);
      demux_info_add(demuxer, hdr, buf);
    }
  }
  mp_msg(MSGT_HEADER,MSGL_DBG2,"list_end=0x%"PRIX64"  pos=0x%"PRIX64"  chunksize=0x%"PRIX64"  next=0x%"PRIX64"\n",
      (int64_t)list_end, (int64_t)stream_tell(demuxer->stream),
      (int64_t)chunksize, (int64_t)chunksize+(int64_t)stream_tell(demuxer->stream));
  if(list_end>0 &&
     chunksize+stream_tell(demuxer->stream) == list_end) list_end=0;
  if(list_end>0 && chunksize+stream_tell(demuxer->stream)>list_end){
      mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_BrokenChunk,chunksize,(char *) &id);
      stream_seek(demuxer->stream,list_end);
      list_end=0;
  } else
  if(chunksize>0) stream_skip(demuxer->stream,chunksize); else
  if((int)chunksize<0) mp_msg(MSGT_HEADER,MSGL_WARN,"chunksize=%u  (id=%.4s)\n",chunksize,(char *) &id);

}
예제 #4
0
파일: demux_fli.c 프로젝트: azuwis/mplayer
static demuxer_t* demux_open_fli(demuxer_t* demuxer){
  sh_video_t *sh_video = NULL;
  fli_frames_t *frames = malloc(sizeof(fli_frames_t));
  int frame_number;
  int speed;
  unsigned int frame_size;
  int magic_number;
  unsigned char * header;

  // go back to the beginning
  stream_reset(demuxer->stream);
  stream_seek(demuxer->stream, 0);

  header = calloc(1, sizeof(BITMAPINFOHEADER) + 128);
  stream_read(demuxer->stream, header + sizeof(BITMAPINFOHEADER), 128);
  stream_seek(demuxer->stream, 0);

  demuxer->movi_start = 128;
  demuxer->movi_end = stream_read_dword_le(demuxer->stream);

  magic_number = stream_read_word_le(demuxer->stream);

  if ((magic_number != 0xAF11) && (magic_number != 0xAF12))
  {
    mp_msg(MSGT_DEMUX, MSGL_ERR, "Bad/unknown magic number (%04x)\n",
	magic_number);
    free(header);
    free(frames);
    return NULL;
  }

  // fetch the number of frames
  frames->num_frames = stream_read_word_le(demuxer->stream);
  frames->current_frame = 0;

  // allocate enough entries for the indices
  //   audit: num_frames is 16bit so it is safe against overflow
  frames->filepos = malloc(frames->num_frames * sizeof(off_t));
  frames->frame_size = malloc(frames->num_frames * sizeof(int));

  // create a new video stream header
  sh_video = new_sh_video(demuxer, 0);

  // make sure the demuxer knows about the new video stream header
  // (even though new_sh_video() ought to take care of it)
  demuxer->video->sh = sh_video;

  // make sure that the video demuxer stream header knows about its
  // parent video demuxer stream (this is getting wacky), or else
  // video_read_properties() will choke
  sh_video->ds = demuxer->video;

  // custom fourcc for internal MPlayer use
  sh_video->format = mmioFOURCC('F', 'L', 'I', 'C');

  sh_video->disp_w = stream_read_word_le(demuxer->stream);
  sh_video->disp_h = stream_read_word_le(demuxer->stream);

  // pass extradata to codec
  sh_video->bih = (BITMAPINFOHEADER*)header;
  sh_video->bih->biSize = sizeof(BITMAPINFOHEADER) + 128;
  sh_video->bih->biWidth = sh_video->disp_w;
  sh_video->bih->biHeight = sh_video->disp_h;

  // skip the video depth and flags
  stream_skip(demuxer->stream, 4);

  // get the speed
  speed = stream_read_word_le(demuxer->stream);
  if (speed == 0)
    speed = 1;
  if (magic_number == 0xAF11)
    speed *= 1000/70;
  sh_video->fps = 1000 / speed;
  sh_video->frametime = 1/sh_video->fps;

  // build the frame index
  stream_seek(demuxer->stream, demuxer->movi_start);
  frame_number = 0;
  while ((!stream_eof(demuxer->stream)) && (frame_number < frames->num_frames))
  {
    frames->filepos[frame_number] = stream_tell(demuxer->stream);
    frame_size = stream_read_dword_le(demuxer->stream);
    magic_number = stream_read_word_le(demuxer->stream);
    stream_skip(demuxer->stream, frame_size - 6);

    // if this chunk has the right magic number, index it
    if ((magic_number == 0xF1FA) || (magic_number == 0xF5FA))
    {
      frames->frame_size[frame_number] = frame_size;
      frame_number++;
    }
  }

  // save the actual number of frames indexed
  frames->num_frames = frame_number;

  demuxer->priv = frames;

  return demuxer;
}