示例#1
0
/* Fill the p_sys->p_csd struct with H264 Parameter Sets */
static int H264SetCSD(decoder_t *p_dec, void *p_buf, size_t i_size,
                      bool *p_size_changed)
{
    decoder_sys_t *p_sys = p_dec->p_sys;
    struct nal_sps sps;
    uint8_t *p_sps_buf = NULL, *p_pps_buf = NULL;
    size_t i_sps_size = 0, i_pps_size = 0;

    /* Check if p_buf contains a valid SPS PPS */
    if (h264_get_spspps(p_buf, i_size, &p_sps_buf, &i_sps_size,
                        &p_pps_buf, &i_pps_size) == 0
     && h264_parse_sps(p_sps_buf, i_sps_size, &sps) == 0
     && sps.i_width && sps.i_height)
    {
        struct csd csd[2];
        int i_csd_count = 0;

        if (i_sps_size)
        {
            csd[i_csd_count].p_buf = p_sps_buf;
            csd[i_csd_count].i_size = i_sps_size;
            i_csd_count++;
        }
        if (i_pps_size)
        {
            csd[i_csd_count].p_buf = p_pps_buf;
            csd[i_csd_count].i_size = i_pps_size;
            i_csd_count++;
        }

        /* Compare the SPS PPS with the old one */
        if (!CSDCmp(p_dec, csd, i_csd_count))
        {
            msg_Warn(p_dec, "New SPS/PPS found, id: %d size: %dx%d sps: %d pps: %d",
                     sps.i_id, sps.i_width, sps.i_height,
                     i_sps_size, i_pps_size);

            /* In most use cases, p_sys->p_csd[0] contains a SPS, and
             * p_sys->p_csd[1] contains a PPS */
            if (CSDDup(p_dec, csd, i_csd_count))
                return VLC_ENOMEM;

            if (p_size_changed)
                *p_size_changed = (sps.i_width != p_sys->u.video.i_width
                                || sps.i_height != p_sys->u.video.i_height);

            p_sys->i_csd_send = 0;
            p_sys->u.video.i_width = sps.i_width;
            p_sys->u.video.i_height = sps.i_height;
            return VLC_SUCCESS;
        }
    }
    return VLC_EGENERIC;
}
示例#2
0
int video_read_properties(sh_video_t *sh_video){
demux_stream_t *d_video=sh_video->ds;
video_codec_t video_codec = find_video_codec(sh_video);
// Determine image properties:
switch(video_codec){
 case VIDEO_OTHER: {
 if((d_video->demuxer->file_format == DEMUXER_TYPE_ASF) || (d_video->demuxer->file_format == DEMUXER_TYPE_AVI)) {
    // display info:
    // in case no strf chunk has been seen in avi, we have no bitmap header
    if(!sh_video->bih) return 0;
    sh_video->format=sh_video->bih->biCompression;
    sh_video->disp_w=sh_video->bih->biWidth;
    sh_video->disp_h=abs(sh_video->bih->biHeight);
  }
  break;
 }
 case VIDEO_MPEG4: {
   int pos = 0, vop_cnt=0, units[3];
   videobuf_len=0; videobuf_code_len=0;
   mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Start code... ");
   while(1){
      int i=sync_video_packet(d_video);
      if(i<=0x11F) break; // found it!
      if(!i || !skip_video_packet(d_video)){
        mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
        return 0;
      }
   }
   mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
   if(!videobuffer) {
     videobuffer = memalign(8, VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
     if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
     else {
       mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
       return 0;
     }
   }
   mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Layer Start code... ");
   while(1){
      int i=sync_video_packet(d_video);
      mp_msg(MSGT_DECVIDEO,MSGL_V,"M4V: 0x%X\n",i);
      if(i>=0x120 && i<=0x12F) break; // found it!
      if(!i || !read_video_packet(d_video)){
        mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
        return 0;
      }
   }
   pos = videobuf_len+4;
   if(!read_video_packet(d_video)){
     mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Layer Header\n");
     return 0;
   }
   mp4_header_process_vol(&picture, &(videobuffer[pos]));
   mp_msg(MSGT_DECVIDEO,MSGL_V,"OK! FPS SEEMS TO BE %.3f\nSearching for Video Object Plane Start code... ", sh_video->fps);
 mp4_init:
   while(1){
      int i=sync_video_packet(d_video);
      if(i==0x1B6) break; // found it!
      if(!i || !read_video_packet(d_video)){
        mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
        return 0;
      }
   }
   pos = videobuf_len+4;
   if(!read_video_packet(d_video)){
     mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Plane Header\n");
     return 0;
   }
   mp4_header_process_vop(&picture, &(videobuffer[pos]));
   sh_video->disp_w = picture.display_picture_width;
   sh_video->disp_h = picture.display_picture_height;
   units[vop_cnt] = picture.timeinc_unit;
   vop_cnt++;
   //mp_msg(MSGT_DECVIDEO,MSGL_V, "TYPE: %d, unit: %d\n", picture.picture_type, picture.timeinc_unit);
   if(!picture.fps) {
     int i, mn, md, mx, diff;
     if(vop_cnt < 3)
          goto mp4_init;

     i=0;
     mn = mx = units[0];
     for(i=0; i<3; i++) {
       if(units[i] < mn)
         mn = units[i];
       if(units[i] > mx)
         mx = units[i];
     }
     md = mn;
     for(i=0; i<3; i++) {
       if((units[i] > mn) && (units[i] < mx))
         md = units[i];
     }
     mp_msg(MSGT_DECVIDEO,MSGL_V, "MIN: %d, mid: %d, max: %d\n", mn, md, mx);
     if(mx - md > md - mn)
       diff = md - mn;
     else
       diff = mx - md;
     if(diff > 0){
       picture.fps = ((float)picture.timeinc_resolution) / diff;
       mp_msg(MSGT_DECVIDEO,MSGL_V, "FPS seems to be: %f, resolution: %d, delta_units: %d\n", picture.fps, picture.timeinc_resolution, diff);
     }
   }
   if(picture.fps) {
    sh_video->fps=picture.fps;
    sh_video->frametime=1.0/picture.fps;
    mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
   }
   mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
   sh_video->format=0x10000004;
   break;
 }
 case VIDEO_H264: {
   int pos = 0;
   videobuf_len=0; videobuf_code_len=0;
   mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence parameter set... ");
   while(1){
      int i=sync_video_packet(d_video);
      if((i&~0x60) == 0x107 && i != 0x107) break; // found it!
      if(!i || !skip_video_packet(d_video)){
        mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
        return 0;
      }
   }
   mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
   if(!videobuffer) {
     videobuffer = memalign(8, VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
     if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
     else {
       mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
       return 0;
     }
   }
   pos = videobuf_len+4;
   if(!read_video_packet(d_video)){
     mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read sequence parameter set\n");
     return 0;
   }
   h264_parse_sps(&picture, &(videobuffer[pos]), videobuf_len - pos);
   sh_video->disp_w=picture.display_picture_width;
   sh_video->disp_h=picture.display_picture_height;
   mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for picture parameter set... ");
   while(1){
      int i=sync_video_packet(d_video);
      mp_msg(MSGT_DECVIDEO,MSGL_V,"H264: 0x%X\n",i);
      if((i&~0x60) == 0x108 && i != 0x108) break; // found it!
      if(!i || !read_video_packet(d_video)){
        mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
        return 0;
      }
   }
   mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\nSearching for Slice... ");
   while(1){
      int i=sync_video_packet(d_video);
      if((i&~0x60) == 0x101 || (i&~0x60) == 0x102 || (i&~0x60) == 0x105) break; // found it!
      if(!i || !read_video_packet(d_video)){
        mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
        return 0;
      }
   }
   mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
   sh_video->format=0x10000005;
   if(picture.fps) {
     sh_video->fps=picture.fps;
     sh_video->frametime=1.0/picture.fps;
     mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
   }
   break;
 }
 case VIDEO_MPEG12: {
   if (d_video->demuxer->file_format == DEMUXER_TYPE_ASF) { // DVR-MS
     if(!sh_video->bih) return 0;
     sh_video->format=sh_video->bih->biCompression;
   }
mpeg_header_parser:
   // Find sequence_header first:
   videobuf_len=0; videobuf_code_len=0;
   telecine=0; telecine_cnt=-2.5;
   mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence header... ");
   while(1){
      int i=sync_video_packet(d_video);
      if(i==0x1B3) break; // found it!
      if(!i || !skip_video_packet(d_video)){
        if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) )  mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
        mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MpegNoSequHdr);
        return 0;
      }
   }
   mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
   // ========= Read & process sequence header & extension ============
   if(!videobuffer) {
     videobuffer = memalign(8, VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
     if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
     else {
       mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
       return 0;
     }
   }

   if(!read_video_packet(d_video)){
     mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_CannotReadMpegSequHdr);
     return 0;
   }
   if(mp_header_process_sequence_header (&picture, &videobuffer[4])) {
     mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_BadMpegSequHdr);
     goto mpeg_header_parser;
   }
   if(sync_video_packet(d_video)==0x1B5){ // next packet is seq. ext.
    int pos=videobuf_len;
    if(!read_video_packet(d_video)){
      mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_CannotReadMpegSequHdrEx);
      return 0;
    }
    if(mp_header_process_extension (&picture, &videobuffer[pos+4])) {
      mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_BadMpegSequHdrEx);
      return 0;
    }
   }

   // display info:
   sh_video->format=picture.mpeg1?0x10000001:0x10000002; // mpeg video
   sh_video->fps=picture.fps * picture.frame_rate_extension_n / picture.frame_rate_extension_d;
   if(!sh_video->fps){
     sh_video->frametime=0;
   } else {
     sh_video->frametime=1.0/sh_video->fps;
   }
   sh_video->disp_w=picture.display_picture_width;
   sh_video->disp_h=picture.display_picture_height;
   // bitrate:
   if(picture.bitrate!=0x3FFFF) // unspecified/VBR ?
       sh_video->i_bps=picture.bitrate * 400 / 8;
   // info:
   mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"mpeg bitrate: %d (%X)\n",picture.bitrate,picture.bitrate);
   mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO:  %s  %dx%d  (aspect %d)  %5.3f fps  %5.1f kbps (%4.1f kbyte/s)\n",
    picture.mpeg1?"MPEG1":"MPEG2",
    sh_video->disp_w,sh_video->disp_h,
    picture.aspect_ratio_information,
    sh_video->fps,
    sh_video->i_bps * 8 / 1000.0,
    sh_video->i_bps / 1000.0 );
  break;
 }
 case VIDEO_VC1: {
   // Find sequence_header:
   videobuf_len=0;
   videobuf_code_len=0;
   mp_msg(MSGT_DECVIDEO,MSGL_INFO,"Searching for VC1 sequence header... ");
   while(1){
      int i=sync_video_packet(d_video);
      if(i==0x10F) break; // found it!
      if(!i || !skip_video_packet(d_video)){
        if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) )  mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
        mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't find VC-1 sequence header\n");
        return 0;
      }
   }
   mp_msg(MSGT_DECVIDEO,MSGL_INFO,"found\n");
   if(!videobuffer) {
     videobuffer = memalign(8, VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
     if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
     else {
       mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
       return 0;
     }
   }
   if(!read_video_packet(d_video)){
     mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't read VC-1 sequence header!\n");
     return 0;
   }

   while(1) {
      int i=sync_video_packet(d_video);
      if(i==0x10E) break; // found it!
      if(!i || !skip_video_packet(d_video)){
        mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't find VC-1 entry point sync-code:(\n");
        return 0;
      }
   }
   if(!read_video_packet(d_video)){
      mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't read VC-1 entry point sync-code:(\n");
      return 0;
   }

   if(mp_vc1_decode_sequence_header(&picture, &videobuffer[4], videobuf_len-4)) {
     sh_video->bih = calloc(1, sizeof(*sh_video->bih) + videobuf_len);
     if(sh_video->bih == NULL) {
       mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Couldn't alloc %d bytes for VC-1 extradata!\n", sizeof(*sh_video->bih) + videobuf_len);
       return 0;
     }
     sh_video->bih->biSize= sizeof(*sh_video->bih) + videobuf_len;
     memcpy(sh_video->bih + 1, videobuffer, videobuf_len);
     sh_video->bih->biCompression = sh_video->format;
     sh_video->bih->biWidth = sh_video->disp_w = picture.display_picture_width;
     sh_video->bih->biHeight = sh_video->disp_h = picture.display_picture_height;
     if(picture.fps > 0) {
       sh_video->frametime=1.0/picture.fps;
       sh_video->fps = picture.fps;
     }
     mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO:  VC-1  %dx%d, %5.3f fps, header len: %d\n",
       sh_video->disp_w, sh_video->disp_h, sh_video->fps, videobuf_len);
   }
  break;
 }
} // switch(file_format)

return 1;
}