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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_BOX_CONTENT_DECODER_H_
#define LIB_JXL_BOX_CONTENT_DECODER_H_
#include <brotli/decode.h>
#include <jxl/decode.h>
#include <stdint.h>
#include <stdlib.h>
#include <memory>
#include <vector>
namespace jxl {
/** Outputs the contents of a box in a streaming fashion, either directly, or
* optionally decoding with Brotli, in case of a brob box. The input must be
* the contents of a box, excluding the box header.
*/
class JxlBoxContentDecoder {
public:
JxlBoxContentDecoder();
~JxlBoxContentDecoder();
void StartBox(bool brob_decode, bool box_until_eof, size_t contents_size);
// Outputs decoded bytes from the box, decoding with brotli if needed.
// box_pos is the position in the box content which next_in points to.
// Returns success, whether more input or output bytes are needed, or error.
JxlDecoderStatus Process(const uint8_t* next_in, size_t avail_in,
size_t box_pos, uint8_t** next_out,
size_t* avail_out);
private:
BrotliDecoderState* brotli_dec;
bool header_done_;
bool brob_decode_;
bool box_until_eof_;
size_t remaining_;
size_t pos_;
};
} // namespace jxl
#endif // LIB_JXL_BOX_CONTENT_DECODER_H_
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