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// Copyright 2016 PDFium Authors. All rights reserved.
// 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_CODEC_CCODEC_JPEGMODULE_H_
#define CORE_FXCODEC_CODEC_CCODEC_JPEGMODULE_H_
#include <csetjmp>
#include <memory>
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/retain_ptr.h"
#include "third_party/base/span.h"
class CCodec_ScanlineDecoder;
class CFX_DIBBase;
#ifdef PDF_ENABLE_XFA
class CFX_DIBAttribute;
#endif // PDF_ENABLE_XFA
class CCodec_JpegModule {
public:
class Context {
public:
virtual ~Context() {}
virtual jmp_buf* GetJumpMark() = 0;
};
std::unique_ptr<CCodec_ScanlineDecoder> CreateDecoder(
pdfium::span<const uint8_t> src_buf,
int width,
int height,
int nComps,
bool ColorTransform);
bool LoadInfo(pdfium::span<const uint8_t> src_span,
int* width,
int* height,
int* num_components,
int* bits_per_components,
bool* color_transform);
std::unique_ptr<Context> Start();
void Input(Context* pContext, const uint8_t* src_buf, uint32_t src_size);
#ifdef PDF_ENABLE_XFA
int ReadHeader(Context* pContext,
int* width,
int* height,
int* nComps,
CFX_DIBAttribute* pAttribute);
#endif // PDF_ENABLE_XFA
bool StartScanline(Context* pContext, int down_scale);
bool ReadScanline(Context* pContext, uint8_t* dest_buf);
uint32_t GetAvailInput(Context* pContext) const;
#if _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
static bool JpegEncode(const RetainPtr<CFX_DIBBase>& pSource,
uint8_t** dest_buf,
size_t* dest_size);
#endif // _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
};
#endif // CORE_FXCODEC_CODEC_CCODEC_JPEGMODULE_H_
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