gain_map.h

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/* Copyright (c) the JPEG XL Project Authors. All rights reserved.
 *
 * Use of this source code is governed by a BSD-style
 * license that can be found in the LICENSE file.
 */

#ifndef JXL_GAIN_MAP_H_
#define JXL_GAIN_MAP_H_

#include <jxl/color_encoding.h>
#include <jxl/jxl_export.h>
#include <jxl/types.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
  uint8_t jhgm_version;
  uint16_t gain_map_metadata_size;
  const uint8_t* gain_map_metadata;
  JXL_BOOL has_color_encoding;
  JxlColorEncoding color_encoding;
  uint32_t alt_icc_size;
  const uint8_t* alt_icc;
  uint32_t gain_map_size;
  const uint8_t* gain_map;
} JxlGainMapBundle;

JXL_EXPORT JXL_BOOL JxlGainMapGetBundleSize(const JxlGainMapBundle* map_bundle,
                                            size_t* bundle_size);

JXL_EXPORT JXL_BOOL JxlGainMapWriteBundle(const JxlGainMapBundle* map_bundle,
                                          uint8_t* output_buffer,
                                          size_t output_buffer_size,
                                          size_t* bytes_written);

JXL_EXPORT JXL_BOOL JxlGainMapReadBundle(JxlGainMapBundle* map_bundle,
                                         const uint8_t* input_buffer,
                                         size_t input_buffer_size,
                                         size_t* bytes_read);

#ifdef __cplusplus
}
#endif

#endif /* JXL_GAIN_MAP_H_ */