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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_MODULAR_ENCODING_DEC_MA_H_
#define LIB_JXL_MODULAR_ENCODING_DEC_MA_H_
#include <stddef.h>
#include <stdint.h>
#include <vector>
#include "lib/jxl/base/status.h"
#include "lib/jxl/dec_bit_reader.h"
#include "lib/jxl/modular/options.h"
namespace jxl {
// inner nodes
struct PropertyDecisionNode {
PropertyVal splitval;
int16_t property; // -1: leaf node, lchild points to leaf node
uint32_t lchild;
uint32_t rchild;
Predictor predictor;
int64_t predictor_offset;
uint32_t multiplier;
PropertyDecisionNode(int p, int split_val, int lchild, int rchild,
Predictor predictor, int64_t predictor_offset,
uint32_t multiplier)
: splitval(split_val),
property(p),
lchild(lchild),
rchild(rchild),
predictor(predictor),
predictor_offset(predictor_offset),
multiplier(multiplier) {}
PropertyDecisionNode()
: splitval(0),
property(-1),
lchild(0),
rchild(0),
predictor(Predictor::Zero),
predictor_offset(0),
multiplier(1) {}
static PropertyDecisionNode Leaf(Predictor predictor, int64_t offset = 0,
uint32_t multiplier = 1) {
return PropertyDecisionNode(-1, 0, 0, 0, predictor, offset, multiplier);
}
static PropertyDecisionNode Split(int p, int split_val, int lchild,
int rchild = -1) {
if (rchild == -1) rchild = lchild + 1;
return PropertyDecisionNode(p, split_val, lchild, rchild, Predictor::Zero,
0, 1);
}
};
using Tree = std::vector<PropertyDecisionNode>;
Status DecodeTree(BitReader *br, Tree *tree, size_t tree_size_limit);
} // namespace jxl
#endif // LIB_JXL_MODULAR_ENCODING_DEC_MA_H_
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