static void
deflicker_prepare_histogram(dt_iop_module_t *self, uint32_t **histogram,
dt_dev_histogram_stats_t *histogram_stats)
{
dt_mipmap_buffer_t buf;
dt_mipmap_cache_read_get(darktable.mipmap_cache, &buf, self->dev->image_storage.id, DT_MIPMAP_FULL, DT_MIPMAP_BLOCKING);
const dt_image_t *img = dt_image_cache_read_get(darktable.image_cache, self->dev->image_storage.id);
dt_image_t image = *img;
dt_image_cache_read_release(darktable.image_cache, img);
if(buf.size != DT_MIPMAP_FULL)
{
dt_control_log(_("failed to get raw buffer from image `%s'"), image.filename);
dt_mipmap_cache_read_release(darktable.mipmap_cache, &buf);
return;
}
dt_dev_histogram_collection_params_t histogram_params;
memcpy(&histogram_params, &self->histogram_params, sizeof(dt_dev_histogram_collection_params_t));
dt_iop_roi_t roi = {0, 0, image.width, image.height, 1.0f};
histogram_params.roi = &roi;
dt_histogram_worker(&histogram_params, histogram_stats, buf.buf, histogram, dt_histogram_helper_cs_RAW_uint16);
histogram_stats->ch = 1u;
dt_mipmap_cache_read_release(darktable.mipmap_cache, &buf);
}
void dt_histogram_helper(const dt_dev_histogram_collection_params_t *const histogram_params,
dt_dev_histogram_stats_t *histogram_stats, dt_iop_colorspace_type_t cst,
const void *pixel, uint32_t **histogram)
{
switch(cst)
{
case iop_cs_RAW:
dt_histogram_worker(histogram_params, histogram_stats, pixel, histogram, histogram_helper_cs_RAW);
histogram_stats->ch = 1u;
break;
case iop_cs_rgb:
dt_histogram_worker(histogram_params, histogram_stats, pixel, histogram, histogram_helper_cs_rgb);
histogram_stats->ch = 3u;
break;
case iop_cs_Lab:
default:
dt_histogram_worker(histogram_params, histogram_stats, pixel, histogram, histogram_helper_cs_Lab);
histogram_stats->ch = 3u;
break;
}
}
static void deflicker_prepare_histogram(dt_iop_module_t *self, uint32_t **histogram,
dt_dev_histogram_stats_t *histogram_stats)
{
dt_mipmap_buffer_t buf;
dt_mipmap_cache_get(darktable.mipmap_cache, &buf, self->dev->image_storage.id, DT_MIPMAP_FULL,
DT_MIPMAP_BLOCKING, 'r');
const dt_image_t *img = dt_image_cache_get(darktable.image_cache, self->dev->image_storage.id, 'r');
dt_image_t image = *img;
dt_image_cache_read_release(darktable.image_cache, img);
if(!buf.buf)
{
dt_control_log(_("failed to get raw buffer from image `%s'"), image.filename);
dt_mipmap_cache_release(darktable.mipmap_cache, &buf);
return;
}
dt_dev_histogram_collection_params_t histogram_params = { 0 };
dt_histogram_roi_t histogram_roi = {.width = image.width,
.height = image.height,
// FIXME: get those from rawprepare IOP somehow !!!
.crop_x = image.crop_x,
.crop_y = image.crop_y,
.crop_width = image.crop_width,
.crop_height = image.crop_height };
histogram_params.roi = &histogram_roi;
histogram_params.bins_count = 16384;
dt_histogram_worker(&histogram_params, histogram_stats, buf.buf, histogram,
dt_histogram_helper_cs_RAW_uint16);
histogram_stats->ch = 1u;
dt_mipmap_cache_release(darktable.mipmap_cache, &buf);
}
/* input: 0 - 16384 (valid range: from black level to white level) */
/* output: -14 ... 0 */
static float raw_to_ev(uint32_t raw, uint32_t black_level, uint32_t white_level)
{
uint32_t raw_max = white_level - black_level;
float raw_ev = -log2f(raw_max) + log2f(CLAMP(raw, 0.0f, 16384.0f));
return raw_ev;
}
