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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_JXL_ENC_CACHE_H_
#define LIB_JXL_ENC_CACHE_H_
#include <stddef.h>
#include <stdint.h>
#include <vector>
#include "lib/jxl/ac_strategy.h"
#include "lib/jxl/aux_out.h"
#include "lib/jxl/base/data_parallel.h"
#include "lib/jxl/chroma_from_luma.h"
#include "lib/jxl/coeff_order.h"
#include "lib/jxl/coeff_order_fwd.h"
#include "lib/jxl/common.h"
#include "lib/jxl/dct_util.h"
#include "lib/jxl/enc_ans.h"
#include "lib/jxl/enc_heuristics.h"
#include "lib/jxl/enc_params.h"
#include "lib/jxl/frame_header.h"
#include "lib/jxl/image.h"
#include "lib/jxl/image_bundle.h"
#include "lib/jxl/passes_state.h"
#include "lib/jxl/progressive_split.h"
#include "lib/jxl/quant_weights.h"
#include "lib/jxl/quantizer.h"
namespace jxl {
// Contains encoder state.
struct PassesEncoderState {
PassesSharedState shared;
ImageF initial_quant_field; // Invalid in Falcon mode.
ImageF initial_quant_masking; // Invalid in Falcon mode.
// Per-pass DCT coefficients for the image. One row per group.
std::vector<std::unique_ptr<ACImage>> coeffs;
// Raw data for special (reference+DC) frames.
std::vector<std::unique_ptr<BitWriter>> special_frames;
// For splitting into passes.
ProgressiveSplitter progressive_splitter;
CompressParams cparams;
struct PassData {
std::vector<std::vector<Token>> ac_tokens;
std::vector<uint8_t> context_map;
EntropyEncodingData codes;
};
std::vector<PassData> passes;
std::vector<uint8_t> histogram_idx;
// Coefficient orders that are non-default.
std::vector<uint32_t> used_orders;
// Multiplier to be applied to the quant matrices of the x channel.
float x_qm_multiplier = 1.0f;
float b_qm_multiplier = 1.0f;
// Heuristics to be used by the encoder.
std::unique_ptr<EncoderHeuristics> heuristics =
make_unique<DefaultEncoderHeuristics>();
};
// Initialize per-frame information.
class ModularFrameEncoder;
void InitializePassesEncoder(const Image3F& opsin, ThreadPool* pool,
PassesEncoderState* passes_enc_state,
ModularFrameEncoder* modular_frame_encoder,
AuxOut* aux_out);
// Working area for ComputeCoefficients (per-group!)
struct EncCache {
// Allocates memory when first called, shrinks images to current group size.
void InitOnce();
// TokenizeCoefficients
Image3I num_nzeroes;
};
} // namespace jxl
#endif // LIB_JXL_ENC_CACHE_H_
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