Exemplos de dt_imageio_flip_buffers_ui8_to_float em C++ (Cpp)

Exemplo n.º 1

Arquivo: imageio.c Projeto: bgK/darktable

// transparent read method to load ldr image to dt_raw_image_t with exif and so on.
dt_imageio_retval_t
dt_imageio_open_ldr(
    dt_image_t *img,
    const char *filename,
    dt_mipmap_cache_allocator_t a)
{
  dt_imageio_retval_t ret;
  ret = dt_imageio_open_tiff(img, filename, a);
  if(ret == DT_IMAGEIO_OK || ret == DT_IMAGEIO_CACHE_FULL)
  {
    img->filters = 0;
    img->flags &= ~DT_IMAGE_RAW;
    img->flags &= ~DT_IMAGE_HDR;
    img->flags |= DT_IMAGE_LDR;
    return ret;
  }

  // jpeg stuff here:
  if(!img->exif_inited)
    (void) dt_exif_read(img, filename);
  const int orientation = dt_image_orientation(img);

  dt_imageio_jpeg_t jpg;
  if(dt_imageio_jpeg_read_header(filename, &jpg)) return DT_IMAGEIO_FILE_CORRUPTED;
  img->width  = (orientation & 4) ? jpg.height : jpg.width;
  img->height = (orientation & 4) ? jpg.width  : jpg.height;

  uint8_t *tmp = (uint8_t *)malloc(sizeof(uint8_t)*jpg.width*jpg.height*4);
  if(dt_imageio_jpeg_read(&jpg, tmp))
  {
    free(tmp);
    return DT_IMAGEIO_FILE_CORRUPTED;
  }

  img->bpp = 4*sizeof(float);
  void *buf = dt_mipmap_cache_alloc(img, DT_MIPMAP_FULL, a);
  if(!buf)
  {
    free(tmp);
    return DT_IMAGEIO_CACHE_FULL;
  }

  dt_imageio_flip_buffers_ui8_to_float((float *)buf, tmp, 0.0f, 255.0f, 4, jpg.width, jpg.height, jpg.width, jpg.height, 4*jpg.width, orientation);

  free(tmp);

  img->filters = 0;
  img->flags &= ~DT_IMAGE_RAW;
  img->flags &= ~DT_IMAGE_HDR;
  img->flags |= DT_IMAGE_LDR;
  return DT_IMAGEIO_OK;
}

Exemplo n.º 2

Arquivo: imageio_jpeg.c Projeto: PolarFox/darktable

dt_imageio_retval_t dt_imageio_open_jpeg(dt_image_t *img,  const char *filename, dt_mipmap_cache_allocator_t a)
{
  const char *ext = filename + strlen(filename);
  while(*ext != '.' && ext > filename) ext--;
  if(strncmp(ext, ".jpg", 4) && strncmp(ext, ".JPG", 4) && strncmp(ext, ".jpeg", 5) && strncmp(ext, ".JPEG", 5))
    return DT_IMAGEIO_FILE_CORRUPTED;

  if(!img->exif_inited)
    (void) dt_exif_read(img, filename);

  const int orientation = dt_image_orientation(img);

  dt_imageio_jpeg_t jpg;
  if(dt_imageio_jpeg_read_header(filename, &jpg)) return DT_IMAGEIO_FILE_CORRUPTED;
  img->width  = (orientation & 4) ? jpg.height : jpg.width;
  img->height = (orientation & 4) ? jpg.width  : jpg.height;


  uint8_t *tmp = (uint8_t *)malloc(sizeof(uint8_t)*jpg.width*jpg.height*4);
  if(dt_imageio_jpeg_read(&jpg, tmp))
  {
    free(tmp);
    return DT_IMAGEIO_FILE_CORRUPTED;
  }

  img->bpp = 4*sizeof(float);
  void *buf = dt_mipmap_cache_alloc(img, DT_MIPMAP_FULL, a);
  if(!buf)
  {
    free(tmp);
    return DT_IMAGEIO_CACHE_FULL;
  }

  dt_imageio_flip_buffers_ui8_to_float((float *)buf, tmp, 0.0f, 255.0f, 4, jpg.width, jpg.height, jpg.width, jpg.height, 4*jpg.width, orientation);

  free(tmp);

  return DT_IMAGEIO_OK;
}