mirror of
https://github.com/opencv/opencv.git
synced 2024-12-27 11:28:14 +08:00
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
|
// 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 "sharpyuv/sharpyuv.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 '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 'bit_depth'-bit gamma value.
|
||
|
|
uint16_t SharpYuvLinearToGamma(uint32_t value, int bit_depth,
|
||
|
|
SharpYuvTransferFunctionType transfer_type);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
} // extern "C"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif // WEBP_SHARPYUV_SHARPYUV_GAMMA_H_
|