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libwebp: Update to 1.5.0

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This commit is contained in:
Rémi Verschelde
2025-01-09 15:17:51 +01:00
parent 1f787b63a5
commit 01f88ff138
89 changed files with 3131 additions and 2143 deletions
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22
thirdparty/libwebp/sharpyuv/sharpyuv_csp.c vendored
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@@ -22,16 +22,16 @@ void SharpYuvComputeConversionMatrix(const SharpYuvColorSpace* yuv_color_space,
const float kr = yuv_color_space->kr;
const float kb = yuv_color_space->kb;
const float kg = 1.0f - kr - kb;
const float cr = 0.5f / (1.0f - kb);
const float cb = 0.5f / (1.0f - kr);
const float cb = 0.5f / (1.0f - kb);
const float cr = 0.5f / (1.0f - kr);
const int shift = yuv_color_space->bit_depth - 8;
const float denom = (float)((1 << yuv_color_space->bit_depth) - 1);
float scale_y = 1.0f;
float add_y = 0.0f;
float scale_u = cr;
float scale_v = cb;
float scale_u = cb;
float scale_v = cr;
float add_uv = (float)(128 << shift);
assert(yuv_color_space->bit_depth >= 8);
@@ -59,31 +59,35 @@ void SharpYuvComputeConversionMatrix(const SharpYuvColorSpace* yuv_color_space,
}
// Matrices are in YUV_FIX fixed point precision.
// WebP's matrix, similar but not identical to kRec601LimitedMatrix.
// WebP's matrix, similar but not identical to kRec601LimitedMatrix
// Derived using the following formulas:
// Y = 0.2569 * R + 0.5044 * G + 0.0979 * B + 16
// U = -0.1483 * R - 0.2911 * G + 0.4394 * B + 128
// V = 0.4394 * R - 0.3679 * G - 0.0715 * B + 128
static const SharpYuvConversionMatrix kWebpMatrix = {
{16839, 33059, 6420, 16 << 16},
{-9719, -19081, 28800, 128 << 16},
{28800, -24116, -4684, 128 << 16},
};
// Kr=0.2990f Kb=0.1140f bits=8 range=kSharpYuvRangeLimited
// Kr=0.2990f Kb=0.1140f bit_depth=8 range=kSharpYuvRangeLimited
static const SharpYuvConversionMatrix kRec601LimitedMatrix = {
{16829, 33039, 6416, 16 << 16},
{-9714, -19071, 28784, 128 << 16},
{28784, -24103, -4681, 128 << 16},
};
// Kr=0.2990f Kb=0.1140f bits=8 range=kSharpYuvRangeFull
// Kr=0.2990f Kb=0.1140f bit_depth=8 range=kSharpYuvRangeFull
static const SharpYuvConversionMatrix kRec601FullMatrix = {
{19595, 38470, 7471, 0},
{-11058, -21710, 32768, 128 << 16},
{32768, -27439, -5329, 128 << 16},
};
// Kr=0.2126f Kb=0.0722f bits=8 range=kSharpYuvRangeLimited
// Kr=0.2126f Kb=0.0722f bit_depth=8 range=kSharpYuvRangeLimited
static const SharpYuvConversionMatrix kRec709LimitedMatrix = {
{11966, 40254, 4064, 16 << 16},
{-6596, -22189, 28784, 128 << 16},
{28784, -26145, -2639, 128 << 16},
};
// Kr=0.2126f Kb=0.0722f bits=8 range=kSharpYuvRangeFull
// Kr=0.2126f Kb=0.0722f bit_depth=8 range=kSharpYuvRangeFull
static const SharpYuvConversionMatrix kRec709FullMatrix = {
{13933, 46871, 4732, 0},
{-7509, -25259, 32768, 128 << 16},