C++ (Cpp) fas_get_frame Examples

Example #1

File: dump_keyframes.c Project: AMDmi3/ffmpeg-fas

int main (int argc, char **argv)
{
  char * out_dir;
  char out_file[128];
  int i;
  seek_table_type table;
  fas_error_type video_error;
  fas_context_ref_type context, seek_context;

  cmdname = argv[0];

  if (argc < 3) {
    show_help();
    fail("arguments\n");
  }

  table = read_table_file(argv[2]);
  if (table.num_entries == 0)
    fail("bad table\n");

  fas_initialize (FAS_FALSE, FAS_RGB24);

  video_error = fas_open_video (&context, argv[1]);
  if (video_error != FAS_SUCCESS)    fail("fail on open\n");

  video_error = fas_put_seek_table(context, table);
  if (video_error != FAS_SUCCESS)    fail("fail on put_seek_table\n");

  video_error = fas_open_video (&seek_context, argv[1]);
  if (video_error != FAS_SUCCESS)    fail("fail on open\n");


  if (argc >= 4) {
    out_dir = argv[3];
    create_dir(out_dir);
  } else {
    out_dir = ".";
  }

  for(i=0;i<table.num_entries;i++)
    {
      fas_raw_image_type image_buffer;
      //      int frame_index = table.array[table.num_entries - i - 1].display_index;
      int frame_index = table.array[i].display_index;
      if (FAS_SUCCESS != fas_seek_to_frame(context, frame_index))
	fail("failed on seek");

      if (FAS_SUCCESS != fas_get_frame (context, &image_buffer))
	fail("failed on rgb image\n");

      sprintf(out_file, "%s/frame_%04d.ppm", out_dir, frame_index);

      fprintf(stderr, "Writing %s (seek_table_value=%d frame_index=%d)\n", out_file, frame_index, fas_get_frame_index(context));
      ppm_save(&image_buffer, out_file);

      fas_free_frame (image_buffer);
    }

  success();
}

Example #2

File: show_seek_table.c Project: benob/ffmpeg-fas

int main (int argc, char **argv)
{
  fas_error_type video_error;
  fas_context_ref_type context;
  fas_raw_image_type image_buffer;
  
  if (argc < 2) {
    fprintf (stderr, "usage: %s <video_file>\n", argv[0]);
    return -1;
  }

  fas_initialize (FAS_FALSE, FAS_RGB24);
  
  video_error = fas_open_video (&context, argv[1]);
  if (video_error != FAS_SUCCESS)
    return -1;

  while (fas_frame_available (context))
    {
      if (FAS_SUCCESS != fas_get_frame (context, &image_buffer))
	return -1;
      fas_free_frame (image_buffer);

      video_error = fas_step_forward (context);
    }

  seek_table_type table;
  table = fas_get_seek_table(context);

  seek_show_raw_table(stdout, table);
  
  return 1;
}

Example #3

File: external_seek_test.c Project: benob/ffmpeg-fas

void do_random_test(fas_context_ref_type context, int start, int stop, int count)
{
  //  printf ("start: %d  stop: %d\n", start, stop );

  while (fas_get_frame_index(context) < start)
    if (FAS_SUCCESS != fas_step_forward(context))
      fail("failed on advancement\n");

  fas_raw_image_type *ref_frames = malloc( (stop - start + 1)* sizeof(fas_raw_image_type));
  
  int i;
  fas_error_type video_error;

  while (fas_get_frame_index(context) <= stop)
    {
      i = fas_get_frame_index(context) - start;

      video_error = fas_get_frame(context, &(ref_frames[i]));
      if (video_error != FAS_SUCCESS)    fail("fail on test(1)\n");

      video_error = fas_step_forward(context);
      if (video_error != FAS_SUCCESS)    fail("fail on test(2)\n");

    }

  int index = -1;
  int prev_index;

  for (i=0;i<count;i++)
    {
      int offset = random() % (stop - start + 1);
      prev_index = index;
      index = start + offset;

      video_error = fas_seek_to_frame(context, index);
      if (video_error != FAS_SUCCESS)    fail("fail on test(seek)\n");


      fas_raw_image_type test_frame;
      video_error = fas_get_frame(context, &test_frame);
      if (video_error != FAS_SUCCESS)    fail("fail on test(seek2)\n");

      //      printf("offset: %d / %d\n", offset, stop - start + 1);
      
      if (!compare_frames(test_frame, ref_frames[offset]))
	{	  
	  char buffer[70];
	  
	  sprintf(buffer, "fail-%d-test.ppm", index);
	  ppm_save(&test_frame, buffer);
	  sprintf(buffer, "fail-%d-ref.ppm", index);
	  ppm_save(&ref_frames[offset], buffer);
	  sprintf(buffer, "failed on compare after seeking (%d->%d)\n", prev_index, index);
	  
	  fail(buffer);
	}
      
      fas_free_frame(test_frame);
    }
  
  for (i=0;i<stop - start + 1;i++)
    free(ref_frames[i].data);
    
  free(ref_frames);
}