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refactor(blur): use cleanup label

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This commit is contained in:
Jeremy Attali 2020-06-13 13:57:25 -04:00
parent 361be6aa80
commit b4a202ef48
1 changed files with 14 additions and 6 deletions
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20
src/render.c
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@ -16,7 +16,7 @@
*/
static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
double y, double width, double height) {
cairo_surface_t *dest_surface, *tmp_surface;
cairo_surface_t *dest_surface, *tmp_surface, *final = NULL;
cairo_t *cr;
int src_width, src_height;
int src_stride, dst_stride;
@ -66,7 +66,7 @@ static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
cairo_surface_set_device_scale(tmp_surface, scale_x, scale_y);
if (cairo_surface_status(dest_surface) || cairo_surface_status(tmp_surface)) {
return NULL;
goto cleanup;
}
cr = cairo_create(tmp_surface);
@ -92,7 +92,7 @@ static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
int end_y = CLAMP((y + height) * scale_y, 0, src_height);
for (pass = 0; pass < nb_passes; pass++) {
/* Horizontally blur from surface -> tmp */
/* Horizontally blur from dst -> tmp */
for (i = start_y; i < end_y; i++) {
s = (uint32_t *)(dst + i * src_stride);
d = (uint32_t *)(tmp + i * dst_stride);
@ -117,7 +117,7 @@ static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
}
}
/* Then vertically blur from tmp -> surface */
/* Then vertically blur from tmp -> dst */
for (i = start_y; i < end_y; i++) {
d = (uint32_t *)(dst + i * dst_stride);
for (j = start_x; j < end_x; j++) {
@ -145,13 +145,21 @@ static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
// Mark destination surface as dirty since it was altered with custom data.
cairo_surface_mark_dirty(dest_surface);
cairo_surface_t *final = cairo_image_surface_create(
src_format, (int)(width * scale_x), (int)(height * scale_y));
final = cairo_image_surface_create(src_format, (int)(width * scale_x),
(int)(height * scale_y));
if (cairo_surface_status(final)) {
goto cleanup;
}
cairo_surface_set_device_scale(final, scale_x, scale_y);
cr = cairo_create(final);
cairo_set_source_surface(cr, dest_surface, -x, -y);
cairo_paint(cr);
cairo_destroy(cr);
cleanup:
cairo_surface_destroy(dest_surface);
cairo_surface_destroy(tmp_surface);
gaussian_kernel_free(gaussian);