76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
// 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_JPEG_JPEGMODULE_H_
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#define CORE_FXCODEC_JPEG_JPEGMODULE_H_
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#include <csetjmp>
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#include <memory>
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#include "build/build_config.h"
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#include "core/fxcodec/codec_module_iface.h"
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#include "third_party/base/optional.h"
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#include "third_party/base/span.h"
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class CFX_DIBBase;
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namespace fxcodec {
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class CFX_DIBAttribute;
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class ScanlineDecoder;
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class JpegModule final : public ModuleIface {
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public:
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struct JpegImageInfo {
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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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};
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std::unique_ptr<ScanlineDecoder> CreateDecoder(
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pdfium::span<const uint8_t> src_span,
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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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// ModuleIface:
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FX_FILESIZE GetAvailInput(Context* pContext) const override;
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bool Input(Context* pContext,
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RetainPtr<CFX_CodecMemory> codec_memory,
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CFX_DIBAttribute* pAttribute) override;
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jmp_buf& GetJumpMark(Context* pContext);
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Optional<JpegImageInfo> LoadInfo(pdfium::span<const uint8_t> src_span);
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std::unique_ptr<Context> Start();
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#ifdef 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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#if defined(OS_WIN)
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static bool JpegEncode(const RetainPtr<CFX_DIBBase>& pSource,
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uint8_t** dest_buf,
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size_t* dest_size);
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#endif // defined(OS_WIN)
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};
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} // namespace fxcodec
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using JpegModule = fxcodec::JpegModule;
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#endif // CORE_FXCODEC_JPEG_JPEGMODULE_H_
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