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Implement more transfer functions in libsharpyuv

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This is inspired by https://github.com/AOMediaCodec/libavif/pull/444/files

Change-Id: I98fae61696b3b8bbc1b5941e7950810d3ac3d588
This commit is contained in:
Vincent Rabaud
2023-06-22 23:09:44 +02:00
parent 2153a6797c
commit 25d94f473b
4 changed files with 409 additions and 35 deletions
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11
sharpyuv/sharpyuv_gamma.h
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@ -12,6 +12,7 @@
#ifndef WEBP_SHARPYUV_SHARPYUV_GAMMA_H_
#define WEBP_SHARPYUV_SHARPYUV_GAMMA_H_
#include "sharpyuv/sharpyuv.h"
#include "src/webp/types.h"
#ifdef __cplusplus
@ -22,11 +23,13 @@ extern "C" {
// SharpYuvGammaToLinear or SharpYuvLinearToGamma.
void SharpYuvInitGammaTables(void);
// Converts a gamma color value on 'bit_depth' bits to a 16 bit linear value.
uint32_t SharpYuvGammaToLinear(uint16_t v, int bit_depth);
// Converts a 'bit_depth'-bit gamma color value to a 16-bit linear value.
uint32_t SharpYuvGammaToLinear(uint16_t v, int bit_depth,
SharpYuvTransferFunctionType transfer_type);
// Converts a 16 bit linear color value to a gamma value on 'bit_depth' bits.
uint16_t SharpYuvLinearToGamma(uint32_t value, int bit_depth);
// Converts a 16-bit linear color value to a 'bit_depth'-bit gamma value.
uint16_t SharpYuvLinearToGamma(uint32_t value, int bit_depth,
SharpYuvTransferFunctionType transfer_type);
#ifdef __cplusplus
} // extern "C"