From d1a0bfe221b91ea37a34d0b0360f347d2a6394e5 Mon Sep 17 00:00:00 2001 From: wolfbeast Date: Mon, 21 Jan 2019 13:09:32 +0100 Subject: Update libwebp to version 1.0.2 This resolves #939. --- media/libwebp/utils/quant_levels_dec_utils.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'media/libwebp/utils/quant_levels_dec_utils.c') diff --git a/media/libwebp/utils/quant_levels_dec_utils.c b/media/libwebp/utils/quant_levels_dec_utils.c index 5c498382d..a60de3444 100644 --- a/media/libwebp/utils/quant_levels_dec_utils.c +++ b/media/libwebp/utils/quant_levels_dec_utils.c @@ -261,9 +261,15 @@ static void CleanupParams(SmoothParams* const p) { int WebPDequantizeLevels(uint8_t* const data, int width, int height, int stride, int strength) { - const int radius = 4 * strength / 100; + int radius = 4 * strength / 100; + if (strength < 0 || strength > 100) return 0; if (data == NULL || width <= 0 || height <= 0) return 0; // bad params + + // limit the filter size to not exceed the image dimensions + if (2 * radius + 1 > width) radius = (width - 1) >> 1; + if (2 * radius + 1 > height) radius = (height - 1) >> 1; + if (radius > 0) { SmoothParams p; memset(&p, 0, sizeof(p)); -- cgit v1.2.3