risp4ml/isp_stages/gamma.h

/*
 * Copyright 2023 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef RISP4ML_ISP_STAGES_GAMMA_H_
#define RISP4ML_ISP_STAGES_GAMMA_H_

#include "risp4ml/common/image.h"

#ifdef __cplusplus
extern "C" {
#endif  // __cplusplus

#ifndef ISP_WITH_RVV
#define GAMMA_NUMBER_POINTS 81
#else
#define GAMMA_NUMBER_POINTS 2049
#endif

typedef struct {
  bool enable;
  pixel_type_t lut[GAMMA_NUMBER_POINTS];
} GammaParams;

void set_gamma_params(GammaParams* params);

void gamma_process(Image* img);

#ifdef __cplusplus
}  // extern "C"
#endif  // __cplusplus

#endif  // RISP4ML_ISP_STAGES_GAMMA_H_