| // Copyright 2020 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_JPEG_JPEG_PROGRESSIVE_DECODER_H_ |
| #define CORE_FXCODEC_JPEG_JPEG_PROGRESSIVE_DECODER_H_ |
| |
| #include <setjmp.h> |
| |
| #include <memory> |
| |
| #include "core/fxcodec/progressive_decoder_iface.h" |
| #include "third_party/base/no_destructor.h" |
| |
| namespace fxcodec { |
| |
| class CFX_DIBAttribute; |
| |
| class JpegProgressiveDecoder final : public ProgressiveDecoderIface { |
| public: |
| static JpegProgressiveDecoder* GetInstance(); |
| |
| static std::unique_ptr<Context> Start(); |
| |
| static jmp_buf& GetJumpMark(Context* pContext); |
| |
| static int ReadHeader(Context* pContext, |
| int* width, |
| int* height, |
| int* nComps, |
| CFX_DIBAttribute* pAttribute); |
| |
| static bool StartScanline(Context* pContext, int down_scale); |
| static bool ReadScanline(Context* pContext, uint8_t* dest_buf); |
| |
| // ProgressiveDecoderIface: |
| FX_FILESIZE GetAvailInput(Context* pContext) const override; |
| bool Input(Context* pContext, |
| RetainPtr<CFX_CodecMemory> codec_memory) override; |
| |
| private: |
| friend pdfium::base::NoDestructor<JpegProgressiveDecoder>; |
| |
| JpegProgressiveDecoder(); |
| ~JpegProgressiveDecoder() override; |
| }; |
| |
| } // namespace fxcodec |
| |
| using JpegProgressiveDecoder = fxcodec::JpegProgressiveDecoder; |
| |
| #endif // CORE_FXCODEC_JPEG_JPEG_PROGRESSIVE_DECODER_H_ |