demux_mov.c

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· C语言 代码 · 共 1,854 行 · 第 1/5 页

		switch (udta_id)
		{
		    case MOV_FOURCC(0xa9,'c','p','y'):
		    case MOV_FOURCC(0xa9,'d','a','y'):
		    case MOV_FOURCC(0xa9,'d','i','r'):
		    /* 0xa9,'e','d','1' - '9' : edit timestamps */
		    case MOV_FOURCC(0xa9,'f','m','t'):
		    case MOV_FOURCC(0xa9,'i','n','f'):
		    case MOV_FOURCC(0xa9,'p','r','d'):
		    case MOV_FOURCC(0xa9,'p','r','f'):
		    case MOV_FOURCC(0xa9,'r','e','q'):
		    case MOV_FOURCC(0xa9,'s','r','c'):
		    case MOV_FOURCC('n','a','m','e'):
		    case MOV_FOURCC(0xa9,'n','a','m'):
		    case MOV_FOURCC(0xa9,'A','R','T'):
		    case MOV_FOURCC(0xa9,'c','m','t'):
		    case MOV_FOURCC(0xa9,'a','u','t'):
		    case MOV_FOURCC(0xa9,'s','w','r'):
		    {
			off_t text_len = stream_read_word(demuxer->stream);
			char text[text_len+2+1];
			stream_read(demuxer->stream, (char *)&text, text_len+2);
			text[text_len+2] = 0x0;
			switch(udta_id)
			{
			    case MOV_FOURCC(0xa9,'a','u','t'):
				demux_info_add(demuxer, "author", &text[2]);
				mp_msg(MSGT_DEMUX, MSGL_V, " Author: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'c','p','y'):
				demux_info_add(demuxer, "copyright", &text[2]);
				mp_msg(MSGT_DEMUX, MSGL_V, " Copyright: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'i','n','f'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Info: %s\n", &text[2]);
				break;
			    case MOV_FOURCC('n','a','m','e'):
			    case MOV_FOURCC(0xa9,'n','a','m'):
				demux_info_add(demuxer, "name", &text[2]);
				mp_msg(MSGT_DEMUX, MSGL_V, " Name: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'A','R','T'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Artist: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'d','i','r'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Director: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'c','m','t'):
				demux_info_add(demuxer, "comments", &text[2]);
				mp_msg(MSGT_DEMUX, MSGL_V, " Comment: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'r','e','q'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Requirements: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'s','w','r'):
				demux_info_add(demuxer, "encoder", &text[2]);
				mp_msg(MSGT_DEMUX, MSGL_V, " Software: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'d','a','y'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Creation timestamp: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'f','m','t'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Format: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'p','r','d'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Producer: %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'p','r','f'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Performer(s): %s\n", &text[2]);
				break;
			    case MOV_FOURCC(0xa9,'s','r','c'):
				mp_msg(MSGT_DEMUX, MSGL_V, " Source providers: %s\n", &text[2]);
				break;
			}
			udta_size -= 4+text_len;
			break;
		    }
		    /* some other shits:    WLOC - window location,
					    LOOP - looping style,
					    SelO - play only selected frames
					    AllF - play all frames
		    */
		    case MOV_FOURCC('W','L','O','C'):
		    case MOV_FOURCC('L','O','O','P'):
		    case MOV_FOURCC('S','e','l','O'):
		    case MOV_FOURCC('A','l','l','F'):
		    default:
		    {
			if( udta_len>udta_size)
				udta_len=udta_size;
			{
			char dump[udta_len-4];
			stream_read(demuxer->stream, (char *)&dump, udta_len-4-4);
			udta_size -= udta_len;
			}
		    }
		}
	    }
	    break;
	} /* eof udta */
	default:
	  id = be2me_32(id);
	  mp_msg(MSGT_DEMUX,MSGL_V,"MOV: unknown chunk: %.4s %d\n",(char *)&id,(int)len);
	} /* endof switch */
	} /* endof else */

	pos+=len+8;
	if(pos>=endpos) break;
	if(!stream_seek(demuxer->stream,pos)) break;
    }
}

static int lschunks_intrak(demuxer_t* demuxer, int level, unsigned int id,
                           off_t pos, off_t len, mov_track_t* trak)
{
  switch(id) {
    case MOV_FOURCC('m','d','a','t'): {
      mp_msg(MSGT_DEMUX,MSGL_WARN,"Hmm, strange MOV, parsing mdat in lschunks?\n");
      return -1;
    }
    case MOV_FOURCC('f','r','e','e'):
    case MOV_FOURCC('u','d','t','a'):
      /* here not supported :p */
      break;
    case MOV_FOURCC('t','k','h','d'): {
      mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sTrack header!\n", level, "");
      // read codec data
      trak->tkdata_len = len;
      trak->tkdata = malloc(trak->tkdata_len);
      stream_read(demuxer->stream, trak->tkdata, trak->tkdata_len);
/*
0  1 Version
1  3 Flags
4  4 Creation time
8  4 Modification time
12 4 Track ID
16 4 Reserved
20 4 Duration
24 8 Reserved
32 2 Layer
34 2 Alternate group
36 2 Volume
38 2 Reserved
40 36 Matrix structure
76 4 Track width
80 4 Track height
*/
      mp_msg(MSGT_DEMUX, MSGL_V,
             "tkhd len=%d ver=%d flags=0x%X id=%d dur=%d lay=%d vol=%d\n",
              trak->tkdata_len, trak->tkdata[0], trak->tkdata[1],
              char2int(trak->tkdata, 12), // id
              char2int(trak->tkdata, 20), // duration
              char2short(trak->tkdata, 32), // layer
              char2short(trak->tkdata, 36)); // volume
      break;
    }
    case MOV_FOURCC('m','d','h','d'): {
      int version = stream_read_char(demuxer->stream);
      mp_msg(MSGT_DEMUX, MSGL_V, "MOV: %*sMedia header!\n", level, "");
      stream_skip(demuxer->stream, (version == 1) ? 19 : 11);
      // read timescale
      trak->timescale = stream_read_dword(demuxer->stream);
      // read length
      if (version == 1)
          trak->length = stream_read_qword(demuxer->stream);
      else
          trak->length = stream_read_dword(demuxer->stream);
      break;
    }
    case MOV_FOURCC('h','d','l','r'): {
      unsigned int tmp = stream_read_dword(demuxer->stream);
      unsigned int type = stream_read_dword_le(demuxer->stream);
      unsigned int subtype = stream_read_dword_le(demuxer->stream);
      unsigned int manufact = stream_read_dword_le(demuxer->stream);
      unsigned int comp_flags = stream_read_dword(demuxer->stream);
      unsigned int comp_mask = stream_read_dword(demuxer->stream);
      int len = stream_read_char(demuxer->stream);
      char* str = malloc(len + 1);
      stream_read(demuxer->stream, str, len);
      str[len] = 0;
      mp_msg(MSGT_DEMUX, MSGL_V,
             "MOV: %*sHandler header: %.4s/%.4s (%.4s) %s\n", level, "",
             (char *)&type, (char *)&subtype, (char *)&manufact, str);
      free(str);
      switch(bswap_32(type)) {
        case MOV_FOURCC('m','h','l','r'):
          trak->media_handler = bswap_32(subtype);
          break;
        case MOV_FOURCC('d','h','l','r'):
          trak->data_handler = bswap_32(subtype);
          break;
        default:
          mp_msg(MSGT_DEMUX, MSGL_V,
                 "MOV: unknown handler class: 0x%X (%.4s)\n",
                 bswap_32(type), (char *)&type);
      }
      break;
    }
    case MOV_FOURCC('v','m','h','d'): {
      mp_msg(MSGT_DEMUX, MSGL_V, "MOV: %*sVideo header!\n", level, "");
      trak->type = MOV_TRAK_VIDEO;
      // read video data
      break;
    }
    case MOV_FOURCC('s','m','h','d'): {
      mp_msg(MSGT_DEMUX, MSGL_V, "MOV: %*sSound header!\n", level, "");
      trak->type = MOV_TRAK_AUDIO;
      // read audio data
      break;
    }
    case MOV_FOURCC('g','m','h','d'): {
      mp_msg(MSGT_DEMUX, MSGL_V, "MOV: %*sGeneric header!\n", level, "");
      trak->type = MOV_TRAK_GENERIC;
      break;
    }
    case MOV_FOURCC('n','m','h','d'): {
      mp_msg(MSGT_DEMUX, MSGL_V, "MOV: %*sGeneric header!\n", level, "");
      trak->type = MOV_TRAK_GENERIC;
      break;
    }
    case MOV_FOURCC('s','t','s','d'): {
      int i = stream_read_dword(demuxer->stream); // temp!
      int count = stream_read_dword(demuxer->stream);
      mp_msg(MSGT_DEMUX, MSGL_V, "MOV: %*sDescription list! (cnt:%d)\n",
             level, "", count);
      for (i = 0; i < count; i++) {
        off_t pos = stream_tell(demuxer->stream);
        off_t len = stream_read_dword(demuxer->stream);
        unsigned int fourcc = stream_read_dword_le(demuxer->stream);
        /* some files created with Broadcast 2000 (e.g. ilacetest.mov)
           contain raw I420 video but have a yv12 fourcc */
        if (fourcc == mmioFOURCC('y','v','1','2'))
          fourcc = mmioFOURCC('I','4','2','0');
        if (len < 8)
          break; // error
        mp_msg(MSGT_DEMUX, MSGL_V,
               "MOV: %*s desc #%d: %.4s  (%"PRId64" bytes)\n", level, "",
               i, (char *)&fourcc, (int64_t)len - 16);
        if (fourcc != trak->fourcc && i)
          mp_msg(MSGT_DEMUX, MSGL_WARN, MSGTR_MOVvariableFourCC);
//      if(!i)
        {
          trak->fourcc = fourcc;
          // read type specific (audio/video/time/text etc) header
          // NOTE: trak type is not yet known at this point :(((
          trak->stdata_len = len - 8;
          trak->stdata = malloc(trak->stdata_len);
          stream_read(demuxer->stream, trak->stdata, trak->stdata_len);
        }
        if (!stream_seek(demuxer->stream, pos + len))
          break;
      }
      break;
    }
    case MOV_FOURCC('s','t','t','s'): {
      int temp = stream_read_dword(demuxer->stream);
      int len = stream_read_dword(demuxer->stream);
      int i;
      unsigned int pts = 0;
      mp_msg(MSGT_DEMUX, MSGL_V,
             "MOV: %*sSample duration table! (%d blocks)\n", level, "",
             len);
      trak->durmap = calloc(len, sizeof(mov_durmap_t));
      trak->durmap_size = len;
      for (i = 0; i < len; i++) {
        trak->durmap[i].num = stream_read_dword(demuxer->stream);
        trak->durmap[i].dur = stream_read_dword(demuxer->stream);
        pts += trak->durmap[i].num * trak->durmap[i].dur;
      }
      if (trak->length != pts)
        mp_msg(MSGT_DEMUX, MSGL_WARN, "Warning! pts=%d  length=%d\n",
               pts, trak->length);
      break;
    }
    case MOV_FOURCC('s','t','s','c'): {
      int temp = stream_read_dword(demuxer->stream);
      int len = stream_read_dword(demuxer->stream);
      int ver = (temp << 24);
      int flags = (temp << 16) | (temp << 8) | temp;
      int i;
      mp_msg(MSGT_DEMUX, MSGL_V,
             "MOV: %*sSample->Chunk mapping table!  (%d blocks) (ver:%d,flags:%d)\n", level, "",
             len, ver, flags);
      // read data:
      trak->chunkmap_size = len;
      trak->chunkmap = calloc(len, sizeof(mov_chunkmap_t));
      for (i = 0; i < len; i++) {
        trak->chunkmap[i].first = stream_read_dword(demuxer->stream) - 1;
        trak->chunkmap[i].spc = stream_read_dword(demuxer->stream);
        trak->chunkmap[i].sdid = stream_read_dword(demuxer->stream);
      }
      break;
    }
    case MOV_FOURCC('s','t','s','z'): {
      int temp = stream_read_dword(demuxer->stream);
      int ss=stream_read_dword(demuxer->stream);
      int ver = (temp << 24);
      int flags = (temp << 16) | (temp << 8) | temp;
      int entries = stream_read_dword(demuxer->stream);
      int i;
      mp_msg(MSGT_DEMUX, MSGL_V,
             "MOV: %*sSample size table! (entries=%d ss=%d) (ver:%d,flags:%d)\n", level, "",
             entries, ss, ver, flags);
      trak->samplesize = ss;
      if (!ss) {
        // variable samplesize
        trak->samples = realloc_struct(trak->samples, entries, sizeof(mov_sample_t));
        trak->samples_size = entries;
        for (i = 0; i < entries; i++)
          trak->samples[i].size = stream_read_dword(demuxer->stream);
      }
      break;
    }
    case MOV_FOURCC('s','t','c','o'): {
      int temp = stream_read_dword(demuxer->stream);
      int len = stream_read_dword(demuxer->stream);
      int i;
      mp_msg(MSGT_DEMUX, MSGL_V, 
             "MOV: %*sChunk offset table! (%d chunks)\n", level, "",
             len);
      // extend array if needed:
      if (len > trak->chunks_size) {
        trak->chunks = realloc_struct(trak->chunks, len, sizeof(mov_chunk_t));
        trak->chunks_size = len;
      }
      // read elements:
      for(i = 0; i < len; i++)
        trak->chunks[i].pos = stream_read_dword(demuxer->stream);
      break;
    }
    case MOV_FOURCC('c','o','6','4'): {
      int temp = stream_read_dword(demuxer->stream);
      int len = stream_read_dword(demuxer->stream);
      int i;
      mp_msg(MSGT_DEMUX, MSGL_V,
             "MOV: %*s64bit chunk offset table! (%d chunks)\n", level, "",
             len);
      // extend array if needed:
      if (len > trak->chunks_size) {
        trak->chunks = realloc_struct(trak->chunks, len, sizeof(mov_chunk_t));
        trak->chunks_size = len;
      }
      // read elements:
      for (i = 0; i < len; i++) {
#ifndef	_LARGEFILE_SOURCE
        if (stream_read_dword(demuxer->stream) != 0)
          mp_msg(MSGT_DEMUX, MSGL_WARN, "Chunk %d has got 64bit address, but you've MPlayer compiled without LARGEFILE support!\n", i);
        trak->chunks[i].pos = stream_read_dword(demuxer->stream);
#else
        trak->chunks[i].pos = stream_read_qword(demuxer->stream);
#endif
      }
      break;
    }
    case MOV_FOURCC('s','t','s','s'): {
      int temp = stream_read_dword(demuxer->stream);
      int entries = stream_read_dword(demuxer->stream);
      int ver = (temp << 24);
      int flags = (temp << 16) | (temp<<8) | temp;
      int i;
      mp_msg(MSGT_DEMUX, MSGL_V,
             "MOV: %*sSyncing samples (keyframes) table! (%d entries) (ver:%d,flags:%d)\n", level, "",
             entries, ver, flags);
      trak->keyframes_size = entries;
      trak->keyframes = calloc(entries, sizeof(unsigned int));
      for (i = 0; i < entries; i++)
        trak->keyframes[i] = stream_read_dword(demuxer->stream) - 1;
      break;
    }
    case MOV_FOURCC('m','d','i'