diff options
Diffstat (limited to 'src/3rdparty/libwebp/src/utils/quant_levels_dec_utils.c')
| -rw-r--r-- | src/3rdparty/libwebp/src/utils/quant_levels_dec_utils.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/3rdparty/libwebp/src/utils/quant_levels_dec_utils.c b/src/3rdparty/libwebp/src/utils/quant_levels_dec_utils.c index d4d23d3..f65b6cd 100644 --- a/src/3rdparty/libwebp/src/utils/quant_levels_dec_utils.c +++ b/src/3rdparty/libwebp/src/utils/quant_levels_dec_utils.c @@ -14,11 +14,11 @@ // // Author: Skal (pascal.massimino@gmail.com) -#include "./quant_levels_dec_utils.h" +#include "src/utils/quant_levels_dec_utils.h" #include <string.h> // for memset -#include "./utils.h" +#include "src/utils/utils.h" // #define USE_DITHERING // uncomment to enable ordered dithering (not vital) @@ -71,10 +71,11 @@ typedef struct { //------------------------------------------------------------------------------ -#define CLIP_MASK (int)(~0U << (8 + DFIX)) +#define CLIP_8b_MASK (int)(~0U << (8 + DFIX)) static WEBP_INLINE uint8_t clip_8b(int v) { - return (!(v & CLIP_MASK)) ? (uint8_t)(v >> DFIX) : (v < 0) ? 0u : 255u; + return (!(v & CLIP_8b_MASK)) ? (uint8_t)(v >> DFIX) : (v < 0) ? 0u : 255u; } +#undef CLIP_8b_MASK // vertical accumulation static void VFilter(SmoothParams* const p) { @@ -260,9 +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)); |