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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 LIB_EXTRAS_ENC_JXL_H_
#define LIB_EXTRAS_ENC_JXL_H_
#include <jxl/encode.h>
#include <jxl/memory_manager.h>
#include <jxl/parallel_runner.h>
#include <jxl/thread_parallel_runner.h>
#include <jxl/types.h>
#include <cstddef>
#include <cstdint>
#include <vector>
#include "lib/extras/packed_image.h"
namespace jxl {
namespace extras {
struct JXLOption {
JXLOption(JxlEncoderFrameSettingId id, int64_t val, size_t frame_index)
: id(id), is_float(false), ival(val), frame_index(frame_index) {}
JXLOption(JxlEncoderFrameSettingId id, float val, size_t frame_index)
: id(id), is_float(true), fval(val), frame_index(frame_index) {}
JxlEncoderFrameSettingId id;
bool is_float;
union {
int64_t ival;
float fval;
};
size_t frame_index;
};
struct JXLCompressParams {
std::vector<JXLOption> options;
// Target butteraugli distance, 0.0 means lossless.
float distance = 1.0f;
float alpha_distance = 0.0f;
// If set to true, forces container mode.
bool use_container = false;
// Whether to enable/disable byte-exact jpeg reconstruction for jpeg inputs.
bool jpeg_store_metadata = true;
bool jpeg_strip_exif = false;
bool jpeg_strip_xmp = false;
bool jpeg_strip_jumbf = false;
// Whether to create brob boxes.
bool compress_boxes = true;
// Upper bound on the intensity level present in the image in nits (zero means
// that the library chooses a default).
float intensity_target = 0;
int already_downsampled = 1;
int upsampling_mode = -1;
// Overrides for bitdepth, codestream level and alpha premultiply.
size_t override_bitdepth = 0;
int32_t codestream_level = -1;
int32_t premultiply = -1;
// If runner_opaque is set, the encoder uses this parallel runner.
JxlParallelRunner runner = JxlThreadParallelRunner;
void* runner_opaque = nullptr;
// If memory_manager is set, encoder uses it.
JxlMemoryManager* memory_manager = nullptr;
JxlEncoderOutputProcessor output_processor = {};
JxlDebugImageCallback debug_image = nullptr;
void* debug_image_opaque = nullptr;
JxlEncoderStats* stats = nullptr;
bool allow_expert_options = false;
void AddOption(JxlEncoderFrameSettingId id, int64_t val) {
options.emplace_back(id, val, 0);
}
void AddFloatOption(JxlEncoderFrameSettingId id, float val) {
options.emplace_back(id, val, 0);
}
bool HasOutputProcessor() const {
return (output_processor.get_buffer != nullptr &&
output_processor.release_buffer != nullptr &&
output_processor.set_finalized_position != nullptr);
}
};
bool EncodeImageJXL(const JXLCompressParams& params, const PackedPixelFile& ppf,
const std::vector<uint8_t>* jpeg_bytes,
std::vector<uint8_t>* compressed);
} // namespace extras
} // namespace jxl
#endif // LIB_EXTRAS_ENC_JXL_H_