// Copyright 2016 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXCODEC_CODEC_CCODEC_JPEGMODULE_H_
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#define CORE_FXCODEC_CODEC_CCODEC_JPEGMODULE_H_
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#include <csetjmp>
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#include <memory>
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#include "core/fxcrt/fx_system.h"
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#include "core/fxcrt/retain_ptr.h"
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class CCodec_ScanlineDecoder;
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class CFX_DIBSource;
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#ifdef PDF_ENABLE_XFA
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class CFX_DIBAttribute;
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#endif // PDF_ENABLE_XFA
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class CCodec_JpegModule {
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public:
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class Context {
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public:
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virtual ~Context() {}
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virtual jmp_buf* GetJumpMark() = 0;
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};
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std::unique_ptr<CCodec_ScanlineDecoder> CreateDecoder(const uint8_t* src_buf,
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uint32_t src_size,
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int width,
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int height,
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int nComps,
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bool ColorTransform);
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bool LoadInfo(const uint8_t* src_buf,
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uint32_t src_size,
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int* width,
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int* height,
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int* num_components,
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int* bits_per_components,
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bool* color_transform);
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std::unique_ptr<Context> Start();
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void Input(Context* pContext, const uint8_t* src_buf, uint32_t src_size);
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#ifndef PDF_ENABLE_XFA
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int ReadHeader(Context* pContext, int* width, int* height, int* nComps);
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#else // PDF_ENABLE_XFA
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int ReadHeader(Context* pContext,
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int* width,
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int* height,
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int* nComps,
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CFX_DIBAttribute* pAttribute);
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#endif // PDF_ENABLE_XFA
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bool StartScanline(Context* pContext, int down_scale);
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bool ReadScanline(Context* pContext, uint8_t* dest_buf);
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uint32_t GetAvailInput(Context* pContext, uint8_t** avail_buf_ptr);
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#if _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
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static bool JpegEncode(const RetainPtr<CFX_DIBSource>& pSource,
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uint8_t** dest_buf,
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size_t* dest_size);
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#endif // _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
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};
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#endif // CORE_FXCODEC_CODEC_CCODEC_JPEGMODULE_H_
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