From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- media/libwebp/sharpyuv/sharpyuv_gamma.h | 35 +++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 media/libwebp/sharpyuv/sharpyuv_gamma.h (limited to 'media/libwebp/sharpyuv/sharpyuv_gamma.h') diff --git a/media/libwebp/sharpyuv/sharpyuv_gamma.h b/media/libwebp/sharpyuv/sharpyuv_gamma.h new file mode 100644 index 0000000000..d13aff59e1 --- /dev/null +++ b/media/libwebp/sharpyuv/sharpyuv_gamma.h @@ -0,0 +1,35 @@ +// Copyright 2022 Google Inc. All Rights Reserved. +// +// Use of this source code is governed by a BSD-style license +// that can be found in the COPYING file in the root of the source +// tree. An additional intellectual property rights grant can be found +// in the file PATENTS. All contributing project authors may +// be found in the AUTHORS file in the root of the source tree. +// ----------------------------------------------------------------------------- +// +// Gamma correction utilities. + +#ifndef WEBP_SHARPYUV_SHARPYUV_GAMMA_H_ +#define WEBP_SHARPYUV_SHARPYUV_GAMMA_H_ + +#include "src/webp/types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +// Initializes precomputed tables. Must be called once before calling +// 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 16 bit linear color value to a gamma value on 'bit_depth' bits. +uint16_t SharpYuvLinearToGamma(uint32_t value, int bit_depth); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // WEBP_SHARPYUV_SHARPYUV_GAMMA_H_ -- cgit v1.2.3