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libwebp: Update to 1.5.0
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19
thirdparty/libwebp/sharpyuv/sharpyuv.h
vendored
19
thirdparty/libwebp/sharpyuv/sharpyuv.h
vendored
@@ -52,7 +52,7 @@ extern "C" {
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// SharpYUV API version following the convention from semver.org
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#define SHARPYUV_VERSION_MAJOR 0
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#define SHARPYUV_VERSION_MINOR 4
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#define SHARPYUV_VERSION_PATCH 0
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#define SHARPYUV_VERSION_PATCH 1
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// Version as a uint32_t. The major number is the high 8 bits.
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// The minor number is the middle 8 bits. The patch number is the low 16 bits.
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#define SHARPYUV_MAKE_VERSION(MAJOR, MINOR, PATCH) \
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@@ -66,10 +66,17 @@ extern "C" {
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SHARPYUV_EXTERN int SharpYuvGetVersion(void);
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// RGB to YUV conversion matrix, in 16 bit fixed point.
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// y = rgb_to_y[0] * r + rgb_to_y[1] * g + rgb_to_y[2] * b + rgb_to_y[3]
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// u = rgb_to_u[0] * r + rgb_to_u[1] * g + rgb_to_u[2] * b + rgb_to_u[3]
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// v = rgb_to_v[0] * r + rgb_to_v[1] * g + rgb_to_v[2] * b + rgb_to_v[3]
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// Then y, u and v values are divided by 1<<16 and rounded.
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// y_ = rgb_to_y[0] * r + rgb_to_y[1] * g + rgb_to_y[2] * b + rgb_to_y[3]
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// u_ = rgb_to_u[0] * r + rgb_to_u[1] * g + rgb_to_u[2] * b + rgb_to_u[3]
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// v_ = rgb_to_v[0] * r + rgb_to_v[1] * g + rgb_to_v[2] * b + rgb_to_v[3]
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// Then the values are divided by 1<<16 and rounded.
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// y = (y_ + (1 << 15)) >> 16
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// u = (u_ + (1 << 15)) >> 16
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// v = (v_ + (1 << 15)) >> 16
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//
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// Typically, the offset values rgb_to_y[3], rgb_to_u[3] and rgb_to_v[3] depend
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// on the input's bit depth, e.g., rgb_to_u[3] = 1 << (rgb_bit_depth - 1 + 16).
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// See also sharpyuv_csp.h to get a predefined matrix or generate a matrix.
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typedef struct {
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int rgb_to_y[4];
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int rgb_to_u[4];
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@@ -127,6 +134,8 @@ typedef enum SharpYuvTransferFunctionType {
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// adjacent pixels on the y, u and v channels. If yuv_bit_depth > 8, they
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// should be multiples of 2.
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// width, height: width and height of the image in pixels
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// yuv_matrix: RGB to YUV conversion matrix. The matrix values typically
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// depend on the input's rgb_bit_depth.
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// This function calls SharpYuvConvertWithOptions with a default transfer
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// function of kSharpYuvTransferFunctionSrgb.
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SHARPYUV_EXTERN int SharpYuvConvert(const void* r_ptr, const void* g_ptr,
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