diff options
Diffstat (limited to 'src/3rdparty/libwebp/src/enc/predictor_enc.c')
| -rw-r--r-- | src/3rdparty/libwebp/src/enc/predictor_enc.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/3rdparty/libwebp/src/enc/predictor_enc.c b/src/3rdparty/libwebp/src/enc/predictor_enc.c index 802e896..2e6762e 100644 --- a/src/3rdparty/libwebp/src/enc/predictor_enc.c +++ b/src/3rdparty/libwebp/src/enc/predictor_enc.c @@ -202,7 +202,7 @@ static uint32_t NearLossless(uint32_t value, uint32_t predict, } if ((value >> 24) == 0 || (value >> 24) == 0xff) { // Preserve transparency of fully transparent or fully opaque pixels. - a = NearLosslessDiff(value >> 24, predict >> 24); + a = NearLosslessDiff((value >> 24) & 0xff, (predict >> 24) & 0xff); } else { a = NearLosslessComponent(value >> 24, predict >> 24, 0xff, quantization); } @@ -215,12 +215,12 @@ static uint32_t NearLossless(uint32_t value, uint32_t predict, // The amount by which green has been adjusted during quantization. It is // subtracted from red and blue for compensation, to avoid accumulating two // quantization errors in them. - green_diff = NearLosslessDiff(new_green, value >> 8); + green_diff = NearLosslessDiff(new_green, (value >> 8) & 0xff); } - r = NearLosslessComponent(NearLosslessDiff(value >> 16, green_diff), + r = NearLosslessComponent(NearLosslessDiff((value >> 16) & 0xff, green_diff), (predict >> 16) & 0xff, 0xff - new_green, quantization); - b = NearLosslessComponent(NearLosslessDiff(value, green_diff), + b = NearLosslessComponent(NearLosslessDiff(value & 0xff, green_diff), predict & 0xff, 0xff - new_green, quantization); return ((uint32_t)a << 24) | ((uint32_t)r << 16) | ((uint32_t)g << 8) | b; } @@ -587,7 +587,7 @@ static void GetBestGreenToRed( } } } - best_tx->green_to_red_ = green_to_red_best; + best_tx->green_to_red_ = (green_to_red_best & 0xff); } static float GetPredictionCostCrossColorBlue( @@ -666,8 +666,8 @@ static void GetBestGreenRedToBlue( break; // out of iter-loop. } } - best_tx->green_to_blue_ = green_to_blue_best; - best_tx->red_to_blue_ = red_to_blue_best; + best_tx->green_to_blue_ = green_to_blue_best & 0xff; + best_tx->red_to_blue_ = red_to_blue_best & 0xff; } #undef kGreenRedToBlueMaxIters #undef kGreenRedToBlueNumAxis |