| // 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_PROGRESSIVE_DECODER_H_ |
| #define CORE_FXCODEC_PROGRESSIVE_DECODER_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "core/fxcodec/fx_codec_def.h" |
| #include "core/fxcodec/jpeg/jpegmodule.h" |
| #include "core/fxcodec/progressive_decoder_iface.h" |
| #include "core/fxcrt/data_vector.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/span.h" |
| #include "core/fxcrt/unowned_ptr_exclusion.h" |
| #include "core/fxge/dib/cstretchengine.h" |
| #include "core/fxge/dib/fx_dib.h" |
| |
| #ifdef PDF_ENABLE_XFA_BMP |
| #include "core/fxcodec/bmp/bmp_decoder.h" |
| #endif // PDF_ENABLE_XFA_BMP |
| |
| #ifdef PDF_ENABLE_XFA_GIF |
| #include "core/fxcodec/gif/gif_decoder.h" |
| #endif // PDF_ENABLE_XFA_GIF |
| |
| #ifdef PDF_ENABLE_XFA_PNG |
| #include "core/fxcodec/png/png_decoder.h" |
| #endif // PDF_ENABLE_XFA_PNG |
| |
| class CFX_DIBitmap; |
| class IFX_SeekableReadStream; |
| |
| namespace fxcodec { |
| |
| class CFX_DIBAttribute; |
| |
| class Dummy {}; // Placeholder to work around C++ syntax issues |
| |
| class ProgressiveDecoder final : |
| #ifdef PDF_ENABLE_XFA_BMP |
| public BmpDecoder::Delegate, |
| #endif // PDF_ENABLE_XFA_BMP |
| #ifdef PDF_ENABLE_XFA_GIF |
| public GifDecoder::Delegate, |
| #endif // PDF_ENABLE_XFA_GIF |
| #ifdef PDF_ENABLE_XFA_PNG |
| public PngDecoder::Delegate, |
| #endif // PDF_ENABLE_XFA_PNG |
| public Dummy { |
| public: |
| enum FXCodec_Format { |
| FXCodec_Invalid = 0, |
| FXCodec_8bppGray = 0x108, |
| FXCodec_8bppRgb = 0x008, |
| FXCodec_Rgb = 0x018, |
| FXCodec_Rgb32 = 0x020, |
| FXCodec_Argb = 0x220, |
| FXCodec_Cmyk = 0x120 |
| }; |
| |
| ProgressiveDecoder(); |
| virtual ~ProgressiveDecoder(); |
| |
| FXCODEC_STATUS LoadImageInfo(RetainPtr<IFX_SeekableReadStream> pFile, |
| FXCODEC_IMAGE_TYPE imageType, |
| CFX_DIBAttribute* pAttribute, |
| bool bSkipImageTypeCheck); |
| |
| FXCODEC_IMAGE_TYPE GetType() const { return m_imageType; } |
| int32_t GetWidth() const { return m_SrcWidth; } |
| int32_t GetHeight() const { return m_SrcHeight; } |
| int32_t GetBitsPerPixel() const { return m_SrcComponents * m_SrcBPC; } |
| |
| std::pair<FXCODEC_STATUS, size_t> GetFrames(); |
| FXCODEC_STATUS StartDecode(RetainPtr<CFX_DIBitmap> bitmap); |
| |
| FXCODEC_STATUS ContinueDecode(); |
| |
| #ifdef PDF_ENABLE_XFA_PNG |
| // PngDecoder::Delegate |
| bool PngReadHeader(int width, |
| int height, |
| int bpc, |
| int pass, |
| int* color_type, |
| double* gamma) override; |
| bool PngAskScanlineBuf(int line, uint8_t** pSrcBuf) override; |
| void PngFillScanlineBufCompleted(int pass, int line) override; |
| #endif // PDF_ENABLE_XFA_PNG |
| |
| #ifdef PDF_ENABLE_XFA_GIF |
| // GifDecoder::Delegate |
| uint32_t GifCurrentPosition() const override; |
| bool GifInputRecordPositionBuf(uint32_t rcd_pos, |
| const FX_RECT& img_rc, |
| pdfium::span<CFX_GifPalette> pal_span, |
| int32_t trans_index, |
| bool interlace) override; |
| void GifReadScanline(int32_t row_num, pdfium::span<uint8_t> row_buf) override; |
| #endif // PDF_ENABLE_XFA_GIF |
| |
| #ifdef PDF_ENABLE_XFA_BMP |
| // BmpDecoder::Delegate |
| bool BmpInputImagePositionBuf(uint32_t rcd_pos) override; |
| void BmpReadScanline(uint32_t row_num, |
| pdfium::span<const uint8_t> row_buf) override; |
| #endif // PDF_ENABLE_XFA_BMP |
| |
| private: |
| using WeightTable = CStretchEngine::WeightTable; |
| using PixelWeight = CStretchEngine::PixelWeight; |
| |
| class HorzTable { |
| public: |
| HorzTable(); |
| ~HorzTable(); |
| |
| void CalculateWeights(int dest_len, int src_len); |
| PixelWeight* GetPixelWeight(int pixel) { |
| return reinterpret_cast<PixelWeight*>(pdfium::make_span(m_pWeightTables) |
| .subspan(pixel * m_ItemSize) |
| .data()); |
| } |
| |
| private: |
| int m_ItemSize = 0; |
| DataVector<uint8_t> m_pWeightTables; |
| }; |
| |
| #ifdef PDF_ENABLE_XFA_BMP |
| bool BmpReadMoreData(ProgressiveDecoderIface::Context* pBmpContext, |
| FXCODEC_STATUS* err_status); |
| bool BmpDetectImageTypeInBuffer(CFX_DIBAttribute* pAttribute); |
| FXCODEC_STATUS BmpStartDecode(); |
| FXCODEC_STATUS BmpContinueDecode(); |
| #endif // PDF_ENABLE_XFA_BMP |
| |
| #ifdef PDF_ENABLE_XFA_GIF |
| bool GifReadMoreData(FXCODEC_STATUS* err_status); |
| bool GifDetectImageTypeInBuffer(); |
| FXCODEC_STATUS GifStartDecode(); |
| FXCODEC_STATUS GifContinueDecode(); |
| #endif // PDF_ENABLE_XFA_GIF |
| |
| #ifdef PDF_ENABLE_XFA_PNG |
| void PngOneOneMapResampleHorz(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, |
| int32_t dest_line, |
| pdfium::span<uint8_t> src_span, |
| FXCodec_Format src_format); |
| bool PngDetectImageTypeInBuffer(CFX_DIBAttribute* pAttribute); |
| FXCODEC_STATUS PngStartDecode(); |
| FXCODEC_STATUS PngContinueDecode(); |
| #endif // PDF_ENABLE_XFA_PNG |
| |
| #ifdef PDF_ENABLE_XFA_TIFF |
| bool TiffDetectImageTypeFromFile(CFX_DIBAttribute* pAttribute); |
| FXCODEC_STATUS TiffContinueDecode(); |
| #endif // PDF_ENABLE_XFA_TIFF |
| |
| bool JpegReadMoreData(FXCODEC_STATUS* err_status); |
| bool JpegDetectImageTypeInBuffer(CFX_DIBAttribute* pAttribute); |
| FXCODEC_STATUS JpegStartDecode(); |
| FXCODEC_STATUS JpegContinueDecode(); |
| |
| bool DetectImageType(FXCODEC_IMAGE_TYPE imageType, |
| CFX_DIBAttribute* pAttribute); |
| bool ReadMoreData(ProgressiveDecoderIface* pModule, |
| ProgressiveDecoderIface::Context* pContext, |
| FXCODEC_STATUS* err_status); |
| |
| void SetTransMethod(); |
| |
| void ResampleScanline(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, |
| int32_t dest_line, |
| pdfium::span<uint8_t> src_span, |
| FXCodec_Format src_format); |
| void Resample(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, |
| int32_t src_line, |
| uint8_t* src_scan, |
| FXCodec_Format src_format); |
| |
| FXCODEC_STATUS m_status = FXCODEC_STATUS::kDecodeFinished; |
| FXCODEC_IMAGE_TYPE m_imageType = FXCODEC_IMAGE_UNKNOWN; |
| RetainPtr<IFX_SeekableReadStream> m_pFile; |
| RetainPtr<CFX_DIBitmap> m_pDeviceBitmap; |
| RetainPtr<CFX_CodecMemory> m_pCodecMemory; |
| DataVector<uint8_t> m_DecodeBuf; |
| DataVector<FX_ARGB> m_SrcPalette; |
| std::unique_ptr<ProgressiveDecoderIface::Context> m_pJpegContext; |
| #ifdef PDF_ENABLE_XFA_BMP |
| std::unique_ptr<ProgressiveDecoderIface::Context> m_pBmpContext; |
| #endif // PDF_ENABLE_XFA_BMP |
| #ifdef PDF_ENABLE_XFA_GIF |
| std::unique_ptr<ProgressiveDecoderIface::Context> m_pGifContext; |
| #endif // PDF_ENABLE_XFA_GIF |
| #ifdef PDF_ENABLE_XFA_PNG |
| std::unique_ptr<ProgressiveDecoderIface::Context> m_pPngContext; |
| #endif // PDF_ENABLE_XFA_PNG |
| #ifdef PDF_ENABLE_XFA_TIFF |
| std::unique_ptr<ProgressiveDecoderIface::Context> m_pTiffContext; |
| #endif // PDF_ENABLE_XFA_TIFF |
| uint32_t m_offSet = 0; |
| int m_ScanlineSize = 0; |
| WeightTable m_WeightHorz; |
| HorzTable m_WeightHorzOO; |
| int m_SrcWidth = 0; |
| int m_SrcHeight = 0; |
| int m_SrcComponents = 0; |
| int m_SrcBPC = 0; |
| int m_TransMethod = -1; |
| int m_SrcRow = 0; |
| FXCodec_Format m_SrcFormat = FXCodec_Invalid; |
| int m_SrcPassNumber = 0; |
| size_t m_FrameNumber = 0; |
| size_t m_FrameCur = 0; |
| #ifdef PDF_ENABLE_XFA_GIF |
| int m_GifBgIndex = 0; |
| pdfium::span<CFX_GifPalette> m_GifPalette; |
| int m_GifTransIndex = -1; |
| FX_RECT m_GifFrameRect; |
| #endif // PDF_ENABLE_XFA_GIF |
| #ifdef PDF_ENABLE_XFA_BMP |
| bool m_BmpIsTopBottom = false; |
| #endif // PDF_ENABLE_XFA_BMP |
| }; |
| |
| } // namespace fxcodec |
| |
| using ProgressiveDecoder = fxcodec::ProgressiveDecoder; |
| |
| #endif // CORE_FXCODEC_PROGRESSIVE_DECODER_H_ |