コード例 #1
0
ファイル: VDPAUDecoder.cpp プロジェクト: JohnChu/libavg
void VDPAUDecoder::setupDecoder(AVCodecContext* pContext)
{
    VdpStatus status;

    // Create new decoder and mixer.
    VdpDecoderProfile profile = 0;
    switch (pContext->pix_fmt) {
        case PIX_FMT_VDPAU_MPEG1:
            profile = VDP_DECODER_PROFILE_MPEG1;
            break;
        case PIX_FMT_VDPAU_MPEG2:
            profile = VDP_DECODER_PROFILE_MPEG2_MAIN;
            break;
        case PIX_FMT_VDPAU_H264:
            profile = VDP_DECODER_PROFILE_H264_HIGH;
            break;
        case PIX_FMT_VDPAU_WMV3:
            profile = VDP_DECODER_PROFILE_VC1_SIMPLE;
            break;
        case PIX_FMT_VDPAU_VC1:
            profile = VDP_DECODER_PROFILE_VC1_SIMPLE;
            break;
        default:
            AVG_ASSERT(false);
    }
    status = vdp_decoder_create(getVDPAUDevice(), profile, m_Size.x, m_Size.y, 16,
            &m_VDPDecoder);
    AVG_ASSERT(status == VDP_STATUS_OK);

    m_PixFmt = pContext->pix_fmt;

    VdpVideoMixerFeature features[] = {
        VDP_VIDEO_MIXER_FEATURE_DEINTERLACE_TEMPORAL,
        VDP_VIDEO_MIXER_FEATURE_DEINTERLACE_TEMPORAL_SPATIAL,
    };
    VdpVideoMixerParameter params[] = { 
        VDP_VIDEO_MIXER_PARAMETER_VIDEO_SURFACE_WIDTH,
        VDP_VIDEO_MIXER_PARAMETER_VIDEO_SURFACE_HEIGHT,
        VDP_VIDEO_MIXER_PARAMETER_CHROMA_TYPE,
        VDP_VIDEO_MIXER_PARAMETER_LAYERS
    };
    VdpChromaType chroma = VDP_CHROMA_TYPE_420;
    int  numLayers = 0;
    void const* paramValues [] = { &m_Size.x, &m_Size.y, &chroma, &numLayers };

    status = vdp_video_mixer_create(getVDPAUDevice(), 2, features, 4, params, 
            paramValues, &m_VDPMixer);
    AVG_ASSERT(status == VDP_STATUS_OK);

}
コード例 #2
0
bool CVDPAU::ConfigVDPAU(AVCodecContext* avctx, int ref_frames)
{
  FiniVDPAUOutput();

  VdpStatus vdp_st;
  VdpDecoderProfile vdp_decoder_profile;
  vid_width = avctx->width;
  vid_height = avctx->height;
  surface_width = avctx->coded_width;
  surface_height = avctx->coded_height;

  past[1] = past[0] = current = future = NULL;
  CLog::Log(LOGNOTICE, " (VDPAU) screenWidth:%i vidWidth:%i surfaceWidth:%i",OutWidth,vid_width,surface_width);
  CLog::Log(LOGNOTICE, " (VDPAU) screenHeight:%i vidHeight:%i surfaceHeight:%i",OutHeight,vid_height,surface_height);
  ReadFormatOf(avctx->pix_fmt, vdp_decoder_profile, vdp_chroma_type);

  if(avctx->pix_fmt == PIX_FMT_VDPAU_H264)
  {
     max_references = ref_frames;
     if (max_references > 16) max_references = 16;
     if (max_references < 5)  max_references = 5;
  }
  else
    max_references = 2;

  vdp_st = vdp_decoder_create(vdp_device,
                              vdp_decoder_profile,
                              surface_width,
                              surface_height,
                              max_references,
                              &decoder);
  if (CheckStatus(vdp_st, __LINE__))
    return false;

  m_vdpauOutputMethod = OUTPUT_NONE;

  vdpauConfigured = true;
  return true;
}
コード例 #3
0
ファイル: avcodec.c プロジェクト: Annovae/vlc
static int Init(vlc_va_t *va, void **ctxp, vlc_fourcc_t *chromap,
                int width, int height)
{
    vlc_va_sys_t *sys = va->sys;
    VdpStatus err;

    width = (width + 1) & ~1;
    height = (height + 3) & ~3;
    sys->width = width;
    sys->height = height;

    unsigned surfaces = 2;
    switch (sys->profile)
    {
      case VDP_DECODER_PROFILE_H264_BASELINE:
      case VDP_DECODER_PROFILE_H264_MAIN:
      case VDP_DECODER_PROFILE_H264_HIGH:
        surfaces = 16;
        break;
    }

    err = vdp_decoder_create(sys->vdp, sys->device, sys->profile, width,
                             height, surfaces, &sys->context->decoder);
    if (err != VDP_STATUS_OK)
    {
        msg_Err(va, "%s creation failure: %s", "decoder",
                vdp_get_error_string(sys->vdp, err));
        sys->context->decoder = VDP_INVALID_HANDLE;
        return VLC_EGENERIC;
    }

    *ctxp = sys->context;
    /* TODO: select better chromas when appropriate */
    *chromap = VLC_CODEC_VDPAU_VIDEO_420;
    return VLC_SUCCESS;
}
コード例 #4
0
ファイル: VDPAU.cpp プロジェクト: hgmeier/xbmc
bool CVDPAU::ConfigVDPAU(AVCodecContext* avctx, int ref_frames)
{
  FiniVDPAUOutput();

  VdpStatus vdp_st;
  VdpDecoderProfile vdp_decoder_profile;
  vid_width = avctx->width;
  vid_height = avctx->height;

  past[1] = past[0] = current = future = NULL;
  CLog::Log(LOGNOTICE, " (VDPAU) screenWidth:%i vidWidth:%i",OutWidth,vid_width);
  CLog::Log(LOGNOTICE, " (VDPAU) screenHeight:%i vidHeight:%i",OutHeight,vid_height);
  ReadFormatOf(avctx->pix_fmt, vdp_decoder_profile, vdp_chroma_type);

  if(avctx->pix_fmt == PIX_FMT_VDPAU_H264)
  {
     max_references = ref_frames;
     if (max_references > 16) max_references = 16;
     if (max_references < 5)  max_references = 5;
  }
  else
    max_references = 2;

  vdp_st = vdp_decoder_create(vdp_device,
                              vdp_decoder_profile,
                              vid_width,
                              vid_height,
                              max_references,
                              &decoder);
  CHECK_VDPAU_RETURN(vdp_st, false);

  vdp_st = vdp_presentation_queue_target_create_x11(vdp_device,
                                                    m_Pixmap, //x_window,
                                                    &vdp_flip_target);
  CHECK_VDPAU_RETURN(vdp_st, false);

  vdp_st = vdp_presentation_queue_create(vdp_device,
                                         vdp_flip_target,
                                         &vdp_flip_queue);
  CHECK_VDPAU_RETURN(vdp_st, false);

  totalAvailableOutputSurfaces = 0;

  int tmpMaxOutputSurfaces = NUM_OUTPUT_SURFACES;
  if (vid_width == FULLHD_WIDTH)
    tmpMaxOutputSurfaces = NUM_OUTPUT_SURFACES_FOR_FULLHD;

  // Creation of outputSurfaces
  for (int i = 0; i < NUM_OUTPUT_SURFACES && i < tmpMaxOutputSurfaces; i++)
  {
    vdp_st = vdp_output_surface_create(vdp_device,
                                       VDP_RGBA_FORMAT_B8G8R8A8,
                                       OutWidth,
                                       OutHeight,
                                       &outputSurfaces[i]);
    CHECK_VDPAU_RETURN(vdp_st, false);
    totalAvailableOutputSurfaces++;
  }
  CLog::Log(LOGNOTICE, " (VDPAU) Total Output Surfaces Available: %i of a max (tmp: %i const: %i)",
                       totalAvailableOutputSurfaces,
                       tmpMaxOutputSurfaces,
                       NUM_OUTPUT_SURFACES);

  surfaceNum = presentSurfaceNum = 0;
  outputSurface = outputSurfaces[surfaceNum];

vdpauConfigured = true;
  return true;
}
コード例 #5
0
ファイル: VDPAU.cpp プロジェクト: hgmeier/xbmc
bool CVDPAU::Open(AVCodecContext* avctx, const enum PixelFormat, unsigned int surfaces)
{
  if(avctx->width  == 0
  || avctx->height == 0)
  {
    CLog::Log(LOGWARNING,"(VDPAU) no width/height available, can't init");
    return false;
  }

  if (!dl_handle)
  {
    dl_handle  = dlopen("libvdpau.so.1", RTLD_LAZY);
    if (!dl_handle)
    {
      const char* error = dlerror();
      if (!error)
        error = "dlerror() returned NULL";

      CLog::Log(LOGNOTICE,"(VDPAU) Unable to get handle to libvdpau: %s", error);
      //g_application.m_guiDialogKaiToast.QueueNotification(CGUIDialogKaiToast::Error, "VDPAU", error, 10000);

      return false;
    }
  }

  InitVDPAUProcs();

  if (vdp_device != VDP_INVALID_HANDLE)
  {
    SpewHardwareAvailable();

    VdpDecoderProfile profile = 0;
    if(avctx->codec_id == CODEC_ID_H264)
      profile = VDP_DECODER_PROFILE_H264_HIGH;
#ifdef VDP_DECODER_PROFILE_MPEG4_PART2_ASP
    else if(avctx->codec_id == CODEC_ID_MPEG4)
      profile = VDP_DECODER_PROFILE_MPEG4_PART2_ASP;
#endif
    if(profile)
    {
      if (!CDVDCodecUtils::IsVP3CompatibleWidth(avctx->width))
        CLog::Log(LOGWARNING,"(VDPAU) width %i might not be supported because of hardware bug", avctx->width);
   
      /* attempt to create a decoder with this width/height, some sizes are not supported by hw */
      VdpStatus vdp_st;
      vdp_st = vdp_decoder_create(vdp_device, profile, avctx->width, avctx->height, 5, &decoder);

      if(vdp_st != VDP_STATUS_OK)
      {
        CLog::Log(LOGERROR, " (VDPAU) Error: %s(%d) checking for decoder support\n", vdp_get_error_string(vdp_st), vdp_st);
        FiniVDPAUProcs();
        return false;
      }

      vdp_decoder_destroy(decoder);
      CheckStatus(vdp_st, __LINE__);
    }

    InitCSCMatrix(avctx->height);
    MakePixmap(avctx->width,avctx->height);

    /* finally setup ffmpeg */
    avctx->get_buffer      = CVDPAU::FFGetBuffer;
    avctx->release_buffer  = CVDPAU::FFReleaseBuffer;
    avctx->draw_horiz_band = CVDPAU::FFDrawSlice;
    avctx->slice_flags=SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;
    return true;
  }
  return false;
}
コード例 #6
0
ファイル: vdpau.c プロジェクト: aib/mlt
static int vdpau_decoder_init( producer_avformat self )
{
	mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent), "vdpau_decoder_init\n" );
	int success = 1;
	
	self->video_codec->opaque = self;
	self->video_codec->get_format = vdpau_get_format;
	self->video_codec->get_buffer = vdpau_get_buffer;
	self->video_codec->release_buffer = vdpau_release_buffer;
	self->video_codec->draw_horiz_band = vdpau_draw_horiz;
	self->video_codec->slice_flags = SLICE_FLAG_CODED_ORDER | SLICE_FLAG_ALLOW_FIELD;
	self->video_codec->pix_fmt = PIX_FMT_VDPAU_H264;
	
	VdpDecoderProfile profile = VDP_DECODER_PROFILE_H264_HIGH;
	uint32_t max_references = self->video_codec->refs;
	pthread_mutex_lock( &mlt_sdl_mutex );
	VdpStatus status = vdp_decoder_create( self->vdpau->device,
		profile, self->video_codec->width, self->video_codec->height, max_references, &self->vdpau->decoder );
	pthread_mutex_unlock( &mlt_sdl_mutex );
	
	if ( status == VDP_STATUS_OK )
	{
			int i, n = FFMIN( self->video_codec->refs + 2, MAX_VDPAU_SURFACES );

			self->vdpau->deque = mlt_deque_init();
			for ( i = 0; i < n; i++ )
			{
				if ( VDP_STATUS_OK == vdp_surface_create( self->vdpau->device, VDP_CHROMA_TYPE_420,
					self->video_codec->width, self->video_codec->height, &self->vdpau->render_states[i].surface ) )
				{
					mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent), "successfully created VDPAU surface %x\n",
						self->vdpau->render_states[i].surface );
					mlt_deque_push_back( self->vdpau->deque, &self->vdpau->render_states[i] );
				}
				else
				{
					mlt_log_info( MLT_PRODUCER_SERVICE(self->parent), "failed to create VDPAU surface %dx%d\n",
						self->video_codec->width, self->video_codec->height );
					while ( mlt_deque_count( self->vdpau->deque ) )
					{
						struct vdpau_render_state *render = mlt_deque_pop_front( self->vdpau->deque );
						vdp_surface_destroy( render->surface );
					}
					mlt_deque_close( self->vdpau->deque );
					success = 0;
					break;
				}
			}
			if ( self->vdpau )
				self->vdpau->b_age = self->vdpau->ip_age[0] = self->vdpau->ip_age[1] = 256*256*256*64; // magic from Avidemux
	}
	else
	{
		success = 0;
		self->vdpau->decoder = VDP_INVALID_HANDLE;
		mlt_log_error( MLT_PRODUCER_SERVICE(self->parent), "VDPAU failed to initialize decoder (%s)\n",
			vdp_get_error_string( status ) );
	}
	
	return success;
}
コード例 #7
0
ファイル: h264_player.c プロジェクト: Njcki/re-vp2
int main(int argc, char **argv) {
  int width = 1280, height = 544;
  Display *display = XOpenDisplay(NULL);

  Window root = XDefaultRootWindow(display);
  Window window = XCreateSimpleWindow(
      display, root, 0, 0, 1280, 544, 0, 0, 0);
  XSelectInput(display, window, ExposureMask | KeyPressMask);
  XMapWindow(display, window);
  XSync(display, 0);

  VdpDevice dev;

  mark("vdp_device_create_x11\n");
  int ret = vdp_device_create_x11(display, 0, &dev, &vdp_get_proc_address);
  assert(ret == VDP_STATUS_OK);

#define get(id, func) \
  ret = vdp_get_proc_address(dev, id, (void **)&func); \
  assert(ret == VDP_STATUS_OK);

  get(VDP_FUNC_ID_DECODER_CREATE, vdp_decoder_create);
  get(VDP_FUNC_ID_DECODER_DESTROY, vdp_decoder_destroy);
  get(VDP_FUNC_ID_DECODER_RENDER, vdp_decoder_render);

  get(VDP_FUNC_ID_VIDEO_MIXER_CREATE, vdp_video_mixer_create);
  get(VDP_FUNC_ID_VIDEO_MIXER_DESTROY, vdp_video_mixer_destroy);
  get(VDP_FUNC_ID_VIDEO_MIXER_RENDER, vdp_video_mixer_render);

  get(VDP_FUNC_ID_VIDEO_SURFACE_CREATE, vdp_video_surface_create);
  get(VDP_FUNC_ID_VIDEO_SURFACE_DESTROY, vdp_video_surface_destroy);
  get(VDP_FUNC_ID_VIDEO_SURFACE_GET_BITS_Y_CB_CR, vdp_video_surface_get_bits_ycbcr);

  get(VDP_FUNC_ID_OUTPUT_SURFACE_CREATE, vdp_output_surface_create);
  get(VDP_FUNC_ID_OUTPUT_SURFACE_DESTROY, vdp_output_surface_destroy);
  get(VDP_FUNC_ID_OUTPUT_SURFACE_GET_BITS_NATIVE, vdp_output_surface_get_bits_native);

  get(VDP_FUNC_ID_PRESENTATION_QUEUE_CREATE, vdp_presentation_queue_create);
  get(VDP_FUNC_ID_PRESENTATION_QUEUE_DESTROY, vdp_presentation_queue_destroy);
  get(VDP_FUNC_ID_PRESENTATION_QUEUE_DISPLAY, vdp_presentation_queue_display);
  get(VDP_FUNC_ID_PRESENTATION_QUEUE_TARGET_CREATE_X11, vdp_presentation_queue_target_create_x11);
  get(VDP_FUNC_ID_PRESENTATION_QUEUE_BLOCK_UNTIL_SURFACE_IDLE, vdp_presentation_queue_block_until_surface_idle);
  get(VDP_FUNC_ID_PRESENTATION_QUEUE_GET_TIME, vdp_presentation_queue_get_time);

#undef get

  VdpDecoder dec;
  VdpVideoSurface video[16];
  VdpOutputSurface output;
  VdpPresentationQueue queue;
  VdpPresentationQueueTarget target;
  VdpVideoMixer mixer;

  VdpVideoMixerFeature mixer_features[] = {
  };
  VdpVideoMixerParameter mixer_params[] = {
    VDP_VIDEO_MIXER_PARAMETER_VIDEO_SURFACE_WIDTH,
    VDP_VIDEO_MIXER_PARAMETER_VIDEO_SURFACE_HEIGHT,
    VDP_VIDEO_MIXER_PARAMETER_CHROMA_TYPE
  };
  int zero = 0;
  const void *mixer_param_vals[] = {
    &width,
    &height,
    &zero
  };

  mark("vdp_decoder_create\n");
  ret = vdp_decoder_create(dev, VDP_DECODER_PROFILE_H264_MAIN, 1280, 544, 6, &dec);
  assert(ret == VDP_STATUS_OK);

  int i;
  for (i = 0; i < 16; i++) {
    mark("vdp_video_surface_create: %d\n", i);
    ret = vdp_video_surface_create(dev, VDP_CHROMA_TYPE_420, 1280, 544, &video[i]);
    assert(ret == VDP_STATUS_OK);
    mark(" <-- %d\n", video[i]);
  }


  mark("vdp_output_surface_create\n");
  ret = vdp_output_surface_create(dev, VDP_RGBA_FORMAT_B8G8R8A8, 1280, 544, &output);
  assert(ret == VDP_STATUS_OK);

  mark("vdp_presentation_queue_target_create_x11\n");
  ret = vdp_presentation_queue_target_create_x11(dev, window, &target);
  assert(ret == VDP_STATUS_OK);

  mark("vdp_presentation_queue_create\n");
  ret = vdp_presentation_queue_create(dev, target, &queue);
  assert(ret == VDP_STATUS_OK);

  mark("vdp_video_mixer_create\n");
  ret = vdp_video_mixer_create(dev, sizeof(mixer_features)/sizeof(mixer_features[0]), mixer_features, sizeof(mixer_params)/sizeof(mixer_params[0]), mixer_params, mixer_param_vals, &mixer);
  assert(ret == VDP_STATUS_OK);


  assert(argc > 1);
  int fd = open(argv[1], O_RDONLY);
  struct stat statbuf;
  assert(fstat(fd, &statbuf) == 0);
  void *addr = mmap(NULL, statbuf.st_size, PROT_READ, MAP_SHARED, fd, 0);
  void *orig_addr = addr;

  mark("mmap file addr: 0x%p size: 0x%lx\n", addr, statbuf.st_size);

  //printf("mmap'd file of size: %ld\n", statbuf.st_size);

  VdpPictureInfoH264 info = {
    .slice_count = 1,
    .field_order_cnt = { 65536, 65536 },
    .is_reference = 1,
    .frame_num = -1,
    .field_pic_flag = 0,
    .bottom_field_flag = 0,
    .num_ref_frames = 6,
    .mb_adaptive_frame_field_flag = 0,
    .constrained_intra_pred_flag = 0,
    .weighted_pred_flag = 0,
    .weighted_bipred_idc = 0,
    .frame_mbs_only_flag = 1,
    .transform_8x8_mode_flag = 0,
    .chroma_qp_index_offset = 0,
    .second_chroma_qp_index_offset = 0,
    .pic_init_qp_minus26 = 0,
    .num_ref_idx_l0_active_minus1 = 0,
    .num_ref_idx_l1_active_minus1 = 0,
    .log2_max_frame_num_minus4 = 5,
    .pic_order_cnt_type = 0,
    .log2_max_pic_order_cnt_lsb_minus4 = 6,
    .delta_pic_order_always_zero_flag = 0,
    .direct_8x8_inference_flag = 1,
    .entropy_coding_mode_flag = 1,
    .pic_order_present_flag = 0,
    .deblocking_filter_control_present_flag = 1,
    .redundant_pic_cnt_present_flag = 0,
  };
  int j;
  for (j = 0; j < 6; ++j) {
    int k;

    for (k = 0; k < 16; ++k)
      info.scaling_lists_4x4[j][k] = 16;
  }

  for (j = 0; j < 2; ++j) {
    int k;

    for (k = 0; k < 64; ++k)
      info.scaling_lists_8x8[j][k] = 16;
  }

  for (j = 0; j < 16; ++j)
    info.referenceFrames[j].surface = VDP_INVALID_HANDLE;


  mark("vdp_presentation_queue_get_time\n");
  VdpTime t;
  ret = vdp_presentation_queue_get_time(queue, &t);
  assert(ret == VDP_STATUS_OK);

  fprintf(stderr, "Start time: %ld\n", t);

  int vframe = 0;

  while ((addr - orig_addr) < statbuf.st_size) {
    int size = ntohl(*(int *)addr);
    addr += 4;
    int nal_type = (*(char *)addr) & 0x1F;
    int nal_ref_idc = (*(char *)addr) >> 5;
    if (nal_type != 1 && nal_type != 5) {
      //fprintf(stderr, "Skipping NAL type %d, size: %d\n", nal_type, size);
      addr += size;
      continue;
    }
    //fprintf(stderr, "Processing NAL type %d, ref_idc: %d, size: %d\n", nal_type, nal_ref_idc, size);

    int bit_offset = 8;
    ue(addr, &bit_offset);
    int slice_type = ue(addr, &bit_offset);
    mark("nal_type: %d, ref_idc: %d, size: %d, slice_type: %d\n", nal_type, nal_ref_idc, size, slice_type);
    //fprintf(stderr, "Slice type: %d\n", slice_type);
    ue(addr, &bit_offset);
    info.frame_num = read_bits(addr, &bit_offset, info.log2_max_frame_num_minus4 + 4);
    if (nal_type == 5) {
      ue(addr, &bit_offset);
      info.frame_num = 0;
      for (j = 0; j < 16; ++j)
        info.referenceFrames[j].surface = VDP_INVALID_HANDLE;
    }

    uint32_t poc_lsb = read_bits(addr, &bit_offset, info.log2_max_pic_order_cnt_lsb_minus4 + 4);
    info.field_order_cnt[0] = (1 << 16) + poc_lsb;
    info.field_order_cnt[1] = (1 << 16) + poc_lsb;

    info.is_reference = nal_ref_idc != 0;

    VdpBitstreamBuffer buffer[2];
    static const char header[3] = {0, 0, 1};
    buffer[0].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
    buffer[0].bitstream = header;
    buffer[0].bitstream_bytes = sizeof(header);
    buffer[1].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
    buffer[1].bitstream = addr;
    buffer[1].bitstream_bytes = size;
    mark("vdp_decoder_render: %d\n", video[vframe]);
    ret = vdp_decoder_render(dec, video[vframe], (void*)&info, 2, buffer);
    assert(ret == VDP_STATUS_OK);

    mark("vdp_video_mixer_render\n");
    ret = vdp_video_mixer_render(
        mixer,
        VDP_INVALID_HANDLE, NULL,
        VDP_VIDEO_MIXER_PICTURE_STRUCTURE_FRAME,
        0, NULL,
        video[vframe],
        0, NULL,
        NULL,
        output,
        NULL,
        NULL,
        0, NULL);
    assert(ret == VDP_STATUS_OK);

    t += 1000000000ULL;
    mark("vdp_presentation_queue_display\n");
    ret = vdp_presentation_queue_display(queue, output, 1280, 544, t);
    assert(ret == VDP_STATUS_OK);

    addr += size;

    /*
    uint32_t pitches[2] = {1280, 640 * 2};
    uint8_t *data[2];
    for (i = 0; i < 2; i++) {
      data[i] = malloc(1280 * 544 / (i ? 2 : 1));
      assert(data[i]);
    }
    ret = vdp_video_surface_get_bits_ycbcr(video[vframe], VDP_YCBCR_FORMAT_NV12, (void **)data, pitches);
    assert(ret == VDP_STATUS_OK);

    write(1, data[0], 1280 * 544);
    for (i = 0; i < 1280 * 544 / 2; i+=2)
      write(1, data[1] + i, 1);
    for (i = 0; i < 1280 * 544 / 2; i+=2)
      write(1, data[1] + i + 1, 1);
    */

    if (info.is_reference) {
      for (j = 5; j > 0; --j)
        memcpy(&info.referenceFrames[j], &info.referenceFrames[j-1], sizeof(info.referenceFrames[0]));
      info.referenceFrames[0].surface = video[vframe];
      memcpy(info.referenceFrames[0].field_order_cnt, info.field_order_cnt, 2 * sizeof(uint32_t));
      info.referenceFrames[0].frame_idx = info.frame_num;
      info.referenceFrames[0].top_is_reference = 1;
      info.referenceFrames[0].bottom_is_reference = 1;
    }
    vframe = (vframe + 1) % 16;
    //if (vframe > 10) break;
  }

  return 0;
}