diff options
| -rw-r--r-- | libass/ass_bitmap.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/libass/ass_bitmap.c b/libass/ass_bitmap.c index 230c49e..f2480c8 100644 --- a/libass/ass_bitmap.c +++ b/libass/ass_bitmap.c @@ -60,12 +60,16 @@ void ass_synth_blur(const BitmapEngine *engine, int opaque_box, int be, double blur_radius, Bitmap *bm_g, Bitmap *bm_o) { + bool blur_g = !bm_o || opaque_box; + if (blur_g && !bm_g) + return; + // Apply gaussian blur double r2 = blur_radius * blur_radius / log(256); if (r2 > 0.001) { if (bm_o) ass_gaussian_blur(engine, bm_o, r2); - if (!bm_o || opaque_box) + if (blur_g) ass_gaussian_blur(engine, bm_g, r2); } @@ -74,7 +78,7 @@ void ass_synth_blur(const BitmapEngine *engine, int opaque_box, int be, size_t size_o = 0, size_g = 0; if (bm_o) size_o = sizeof(uint16_t) * bm_o->stride * 2; - if (!bm_o || opaque_box) + if (blur_g) size_g = sizeof(uint16_t) * bm_g->stride * 2; size_t size = FFMAX(size_o, size_g); uint16_t *tmp = size ? ass_aligned_alloc(32, size) : NULL; @@ -99,7 +103,7 @@ void ass_synth_blur(const BitmapEngine *engine, int opaque_box, int be, engine->be_blur(buf, w, h, stride, tmp); } } - if (!bm_o || opaque_box) { + if (blur_g) { unsigned passes = be; unsigned w = bm_g->w; unsigned h = bm_g->h; |