// Copyright 2014 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_PROGRESSIVEDECODER_H_
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#define CORE_FXCODEC_CODEC_CCODEC_PROGRESSIVEDECODER_H_
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#include <memory>
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#include <utility>
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#include <vector>
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#include "core/fxcodec/codec/ccodec_bmpmodule.h"
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#include "core/fxcodec/codec/ccodec_gifmodule.h"
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#include "core/fxcodec/codec/ccodec_jpegmodule.h"
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#include "core/fxcodec/codec/ccodec_pngmodule.h"
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#include "core/fxcodec/codec/ccodec_tiffmodule.h"
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#include "core/fxcodec/fx_codec_def.h"
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#include "core/fxcrt/fx_system.h"
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#include "core/fxcrt/retain_ptr.h"
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#include "core/fxcrt/unowned_ptr.h"
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#include "core/fxge/fx_dib.h"
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class CCodec_ModuleMgr;
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class CFX_DIBAttribute;
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class IFX_SeekableReadStream;
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class CCodec_ProgressiveDecoder : public CCodec_BmpModule::Delegate,
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public CCodec_GifModule::Delegate,
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public CCodec_PngModule::Delegate {
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public:
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enum FXCodec_Format {
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FXCodec_Invalid = 0,
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FXCodec_1bppGray = 0x101,
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FXCodec_1bppRgb = 0x001,
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FXCodec_8bppGray = 0x108,
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FXCodec_8bppRgb = 0x008,
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FXCodec_Rgb = 0x018,
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FXCodec_Rgb32 = 0x020,
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FXCodec_Argb = 0x220,
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FXCodec_Cmyk = 0x120
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};
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explicit CCodec_ProgressiveDecoder(CCodec_ModuleMgr* pCodecMgr);
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virtual ~CCodec_ProgressiveDecoder();
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FXCODEC_STATUS LoadImageInfo(const RetainPtr<IFX_SeekableReadStream>& pFile,
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FXCODEC_IMAGE_TYPE imageType,
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CFX_DIBAttribute* pAttribute,
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bool bSkipImageTypeCheck);
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FXCODEC_IMAGE_TYPE GetType() const { return m_imagType; }
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int32_t GetWidth() const { return m_SrcWidth; }
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int32_t GetHeight() const { return m_SrcHeight; }
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int32_t GetNumComponents() const { return m_SrcComponents; }
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int32_t GetBPC() const { return m_SrcBPC; }
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void SetClipBox(FX_RECT* clip);
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std::pair<FXCODEC_STATUS, size_t> GetFrames();
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FXCODEC_STATUS StartDecode(const RetainPtr<CFX_DIBitmap>& pDIBitmap,
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int start_x,
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int start_y,
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int size_x,
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int size_y);
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FXCODEC_STATUS ContinueDecode();
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struct PixelWeight {
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int m_SrcStart;
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int m_SrcEnd;
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int m_Weights[1];
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};
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class CFXCODEC_WeightTable {
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public:
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CFXCODEC_WeightTable();
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~CFXCODEC_WeightTable();
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void Calc(int dest_len,
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int dest_min,
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int dest_max,
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int src_len,
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int src_min,
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int src_max);
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PixelWeight* GetPixelWeight(int pixel) {
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return reinterpret_cast<PixelWeight*>(m_pWeightTables.data() +
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(pixel - m_DestMin) * m_ItemSize);
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}
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int m_DestMin;
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int m_ItemSize;
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std::vector<uint8_t> m_pWeightTables;
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};
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class CFXCODEC_HorzTable {
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public:
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CFXCODEC_HorzTable();
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~CFXCODEC_HorzTable();
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void Calc(int dest_len, int src_len);
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PixelWeight* GetPixelWeight(int pixel) {
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return reinterpret_cast<PixelWeight*>(m_pWeightTables.data() +
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pixel * m_ItemSize);
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}
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int m_ItemSize;
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std::vector<uint8_t> m_pWeightTables;
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};
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class CFXCODEC_VertTable {
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public:
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CFXCODEC_VertTable();
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~CFXCODEC_VertTable();
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void Calc(int dest_len, int src_len);
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PixelWeight* GetPixelWeight(int pixel) {
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return reinterpret_cast<PixelWeight*>(m_pWeightTables.data() +
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pixel * m_ItemSize);
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}
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int m_ItemSize;
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std::vector<uint8_t> m_pWeightTables;
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};
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// CCodec_PngModule::Delegate
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bool PngReadHeader(int width,
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int height,
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int bpc,
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int pass,
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int* color_type,
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double* gamma) override;
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bool PngAskScanlineBuf(int line, uint8_t** pSrcBuf) override;
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void PngFillScanlineBufCompleted(int pass, int line) override;
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// CCodec_GifModule::Delegate
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void GifRecordCurrentPosition(uint32_t& cur_pos) override;
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bool GifInputRecordPositionBuf(uint32_t rcd_pos,
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const FX_RECT& img_rc,
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int32_t pal_num,
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void* pal_ptr,
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int32_t delay_time,
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bool user_input,
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int32_t trans_index,
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int32_t disposal_method,
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bool interlace) override;
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void GifReadScanline(int32_t row_num, uint8_t* row_buf) override;
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// CCodec_BmpModule::Delegate
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bool BmpInputImagePositionBuf(uint32_t rcd_pos) override;
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void BmpReadScanline(uint32_t row_num,
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const std::vector<uint8_t>& row_buf) override;
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private:
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bool BmpReadMoreData(CCodec_BmpModule* pBmpModule,
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FXCODEC_STATUS& err_status);
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bool GifReadMoreData(CCodec_GifModule* pGifModule,
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FXCODEC_STATUS& err_status);
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bool JpegReadMoreData(CCodec_JpegModule* pJpegModule,
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FXCODEC_STATUS& err_status);
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void PngOneOneMapResampleHorz(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap,
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int32_t des_line,
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uint8_t* src_scan,
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FXCodec_Format src_format);
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bool DetectImageType(FXCODEC_IMAGE_TYPE imageType,
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CFX_DIBAttribute* pAttribute);
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bool BmpDetectImageType(CFX_DIBAttribute* pAttribute, uint32_t size);
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bool JpegDetectImageType(CFX_DIBAttribute* pAttribute, uint32_t size);
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bool PngDetectImageType(CFX_DIBAttribute* pAttribute, uint32_t size);
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bool GifDetectImageType(CFX_DIBAttribute* pAttribute, uint32_t size);
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bool TifDetectImageType(CFX_DIBAttribute* pAttribute, uint32_t size);
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void GetDownScale(int& down_scale);
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void GetTransMethod(FXDIB_Format des_format, FXCodec_Format src_format);
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void ReSampleScanline(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap,
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int32_t des_line,
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uint8_t* src_scan,
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FXCodec_Format src_format);
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void Resample(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap,
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int32_t src_line,
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uint8_t* src_scan,
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FXCodec_Format src_format);
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void ResampleVert(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap,
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double scale_y,
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int des_row);
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void ResampleVertBT(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap,
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double scale_y,
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int des_row);
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void GifDoubleLineResampleVert(const RetainPtr<CFX_DIBitmap>& pDeviceBitmap,
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double scale_y,
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int des_row);
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FXCODEC_STATUS JpegStartDecode(const RetainPtr<CFX_DIBitmap>& pDIBitmap);
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FXCODEC_STATUS PngStartDecode(const RetainPtr<CFX_DIBitmap>& pDIBitmap);
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FXCODEC_STATUS GifStartDecode(const RetainPtr<CFX_DIBitmap>& pDIBitmap);
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FXCODEC_STATUS BmpStartDecode(const RetainPtr<CFX_DIBitmap>& pDIBitmap);
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FXCODEC_STATUS JpegContinueDecode();
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FXCODEC_STATUS PngContinueDecode();
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FXCODEC_STATUS GifContinueDecode();
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FXCODEC_STATUS BmpContinueDecode();
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FXCODEC_STATUS TifContinueDecode();
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RetainPtr<IFX_SeekableReadStream> m_pFile;
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RetainPtr<CFX_DIBitmap> m_pDeviceBitmap;
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UnownedPtr<CCodec_ModuleMgr> m_pCodecMgr;
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std::unique_ptr<CCodec_JpegModule::Context> m_pJpegContext;
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std::unique_ptr<CCodec_PngModule::Context> m_pPngContext;
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std::unique_ptr<CCodec_GifModule::Context> m_pGifContext;
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std::unique_ptr<CCodec_BmpModule::Context> m_pBmpContext;
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std::unique_ptr<CCodec_TiffModule::Context> m_pTiffContext;
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FXCODEC_IMAGE_TYPE m_imagType;
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uint32_t m_offSet;
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uint8_t* m_pSrcBuf;
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uint32_t m_SrcSize;
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uint8_t* m_pDecodeBuf;
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int m_ScanlineSize;
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CFXCODEC_WeightTable m_WeightHorz;
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CFXCODEC_VertTable m_WeightVert;
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CFXCODEC_HorzTable m_WeightHorzOO;
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int m_SrcWidth;
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int m_SrcHeight;
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int m_SrcComponents;
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int m_SrcBPC;
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FX_RECT m_clipBox;
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int m_startX;
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int m_startY;
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int m_sizeX;
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int m_sizeY;
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int m_TransMethod;
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FX_ARGB* m_pSrcPalette;
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int m_SrcPaletteNumber;
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int m_SrcRow;
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FXCodec_Format m_SrcFormat;
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int m_SrcPassNumber;
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size_t m_FrameNumber;
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size_t m_FrameCur;
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int m_GifBgIndex;
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uint8_t* m_pGifPalette;
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int32_t m_GifPltNumber;
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int m_GifTransIndex;
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FX_RECT m_GifFrameRect;
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bool m_BmpIsTopBottom;
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FXCODEC_STATUS m_status;
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};
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#endif // CORE_FXCODEC_CODEC_CCODEC_PROGRESSIVEDECODER_H_
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