C++ (Cpp) dt_dev_pixelpipe_init_dummy示例

示例#1

文件： cups_print.c 项目： Acidburn0zzz/darktable

static void _get_image_dimension (int32_t imgid, int32_t *iwidth, int32_t *iheight)
{
  dt_develop_t dev;
  dt_mipmap_buffer_t buf;
  dt_mipmap_cache_get(darktable.mipmap_cache, &buf, imgid, DT_MIPMAP_FULL, DT_MIPMAP_BLOCKING, 'r');

  dt_dev_init(&dev, 0);
  dt_dev_load_image(&dev, imgid);
  const dt_image_t *img = &dev.image_storage;

  dt_dev_pixelpipe_t pipe;
  int wd = img->width, ht = img->height;
  int res = dt_dev_pixelpipe_init_dummy(&pipe, wd, ht);
  if(res)
  {
    // set mem pointer to 0, won't be used.
    dt_dev_pixelpipe_set_input(&pipe, &dev, (float *)buf.buf, wd, ht, 1.0f);
    dt_dev_pixelpipe_create_nodes(&pipe, &dev);
    dt_dev_pixelpipe_synch_all(&pipe, &dev);
    dt_dev_pixelpipe_get_dimensions(&pipe, &dev, pipe.iwidth, pipe.iheight, &pipe.processed_width,
                                    &pipe.processed_height);
    wd = pipe.processed_width;
    ht = pipe.processed_height;
    dt_dev_pixelpipe_cleanup(&pipe);
  }
  dt_dev_cleanup(&dev);
  dt_mipmap_cache_release(darktable.mipmap_cache, &buf);

  *iwidth = wd;
  *iheight = ht;
}

示例#2

文件： cups_print.c 项目： BradleyKarkanen/darktable

static void _get_image_dimension (int32_t imgid, int32_t *iwidth, int32_t *iheight)
{
  dt_develop_t dev;

  dt_dev_init(&dev, 0);
  dt_dev_load_image(&dev, imgid);
  const dt_image_t *img = &dev.image_storage;

  dt_dev_pixelpipe_t pipe;
  int wd = img->width, ht = img->height;
  int res = dt_dev_pixelpipe_init_dummy(&pipe, wd, ht);
  if(res)
  {
    // set mem pointer to 0, won't be used.
    dt_dev_pixelpipe_set_input(&pipe, &dev, NULL, wd, ht, 1.0f, 0);
    dt_dev_pixelpipe_create_nodes(&pipe, &dev);
    dt_dev_pixelpipe_synch_all(&pipe, &dev);
    dt_dev_pixelpipe_get_dimensions(&pipe, &dev, pipe.iwidth, pipe.iheight, &pipe.processed_width,
                                    &pipe.processed_height);
    wd = pipe.processed_width;
    ht = pipe.processed_height;
    dt_dev_pixelpipe_cleanup(&pipe);
  }
  dt_dev_cleanup(&dev);

  *iwidth = wd;
  *iheight = ht;
}