jpx_decode_utils.h

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// Copyright 2014 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
#ifndef CORE_FXCODEC_JPX_JPX_DECODE_UTILS_H_
#define CORE_FXCODEC_JPX_JPX_DECODE_UTILS_H_
 
#include <stdint.h>
 
#include "core/fxcrt/span.h"
 
#if defined(USE_SYSTEM_LIBOPENJPEG2)
#include <openjpeg.h>
#else
#include "third_party/libopenjpeg/openjpeg.h"
#endif
 
namespace fxcodec {
 
struct DecodeData {
  DecodeData() = default;
  explicit DecodeData(pdfium::span<const uint8_t> data);
 
  const uint8_t* src_data = nullptr;
  OPJ_SIZE_T src_size = 0;
  OPJ_SIZE_T offset = 0;
};
 
/* Wrappers for C-style callbacks. */
OPJ_SIZE_T opj_read_from_memory(void* p_buffer,
                                OPJ_SIZE_T nb_bytes,
                                void* p_user_data);
OPJ_OFF_T opj_skip_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data);
OPJ_BOOL opj_seek_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data);
 
}  // namespace fxcodec
 
#endif  // CORE_FXCODEC_JPX_JPX_DECODE_UTILS_H_