1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef _FX_CODEC_PROGRESS_H_ 8 #define _FX_CODEC_PROGRESS_H_ 9 #define FXCODEC_BLOCK_SIZE 4096 10 #define FXCODEC_PNG_GAMMA 2.2 11 #if _FX_OS_ == _FX_MACOSX_ || _FX_OS_ == _FX_IOS_ 12 #undef FXCODEC_PNG_GAMMA 13 #define FXCODEC_PNG_GAMMA 1.7 14 #endif 15 struct PixelWeight { 16 int m_SrcStart; 17 int m_SrcEnd; 18 int m_Weights[1]; 19 }; 20 class CFXCODEC_WeightTable { 21 public: 22 CFXCODEC_WeightTable() { m_pWeightTables = NULL; } 23 ~CFXCODEC_WeightTable() { 24 if (m_pWeightTables != NULL) { 25 FX_Free(m_pWeightTables); 26 } 27 } 28 29 void Calc(int dest_len, 30 int dest_min, 31 int dest_max, 32 int src_len, 33 int src_min, 34 int src_max, 35 FX_BOOL bInterpol); 36 PixelWeight* GetPixelWeight(int pixel) { 37 return (PixelWeight*)(m_pWeightTables + (pixel - m_DestMin) * m_ItemSize); 38 } 39 40 int m_DestMin, m_ItemSize; 41 uint8_t* m_pWeightTables; 42 }; 43 class CFXCODEC_HorzTable { 44 public: 45 CFXCODEC_HorzTable() { m_pWeightTables = NULL; } 46 ~CFXCODEC_HorzTable() { 47 if (m_pWeightTables != NULL) { 48 FX_Free(m_pWeightTables); 49 } 50 } 51 52 void Calc(int dest_len, int src_len, FX_BOOL bInterpol); 53 PixelWeight* GetPixelWeight(int pixel) { 54 return (PixelWeight*)(m_pWeightTables + pixel * m_ItemSize); 55 } 56 57 int m_ItemSize; 58 uint8_t* m_pWeightTables; 59 }; 60 class CFXCODEC_VertTable { 61 public: 62 CFXCODEC_VertTable() { m_pWeightTables = NULL; } 63 ~CFXCODEC_VertTable() { 64 if (m_pWeightTables != NULL) { 65 FX_Free(m_pWeightTables); 66 } 67 } 68 void Calc(int dest_len, int src_len); 69 PixelWeight* GetPixelWeight(int pixel) { 70 return (PixelWeight*)(m_pWeightTables + pixel * m_ItemSize); 71 } 72 int m_ItemSize; 73 uint8_t* m_pWeightTables; 74 }; 75 enum FXCodec_Format { 76 FXCodec_Invalid = 0, 77 FXCodec_1bppGray = 0x101, 78 FXCodec_1bppRgb = 0x001, 79 FXCodec_8bppGray = 0x108, 80 FXCodec_8bppRgb = 0x008, 81 FXCodec_Rgb = 0x018, 82 FXCodec_Rgb32 = 0x020, 83 FXCodec_Argb = 0x220, 84 FXCodec_Cmyk = 0x120 85 }; 86 class CCodec_ProgressiveDecoder : public ICodec_ProgressiveDecoder { 87 public: 88 CCodec_ProgressiveDecoder(CCodec_ModuleMgr* pCodecMgr); 89 ~CCodec_ProgressiveDecoder() override; 90 91 FXCODEC_STATUS LoadImageInfo(IFX_FileRead* pFile, 92 FXCODEC_IMAGE_TYPE imageType, 93 CFX_DIBAttribute* pAttribute) override; 94 95 FXCODEC_IMAGE_TYPE GetType() const override { return m_imagType; } 96 int32_t GetWidth() const override { return m_SrcWidth; } 97 int32_t GetHeight() const override { return m_SrcHeight; } 98 int32_t GetNumComponents() const override { return m_SrcComponents; } 99 int32_t GetBPC() const override { return m_SrcBPC; } 100 void SetClipBox(FX_RECT* clip) override; 101 102 FXCODEC_STATUS GetFrames(int32_t& frames, IFX_Pause* pPause) override; 103 FXCODEC_STATUS StartDecode(CFX_DIBitmap* pDIBitmap, 104 int start_x, 105 int start_y, 106 int size_x, 107 int size_y, 108 int32_t frames, 109 FX_BOOL bInterpol) override; 110 111 FXCODEC_STATUS ContinueDecode(IFX_Pause* pPause) override; 112 113 protected: 114 static FX_BOOL PngReadHeaderFunc(void* pModule, 115 int width, 116 int height, 117 int bpc, 118 int pass, 119 int* color_type, 120 double* gamma); 121 static FX_BOOL PngAskScanlineBufFunc(void* pModule, 122 int line, 123 uint8_t*& src_buf); 124 static void PngFillScanlineBufCompletedFunc(void* pModule, 125 int pass, 126 int line); 127 static void GifRecordCurrentPositionCallback(void* pModule, 128 FX_DWORD& cur_pos); 129 static uint8_t* GifAskLocalPaletteBufCallback(void* pModule, 130 int32_t frame_num, 131 int32_t pal_size); 132 static FX_BOOL GifInputRecordPositionBufCallback(void* pModule, 133 FX_DWORD rcd_pos, 134 const FX_RECT& img_rc, 135 int32_t pal_num, 136 void* pal_ptr, 137 int32_t delay_time, 138 FX_BOOL user_input, 139 int32_t trans_index, 140 int32_t disposal_method, 141 FX_BOOL interlace); 142 static void GifReadScanlineCallback(void* pModule, 143 int32_t row_num, 144 uint8_t* row_buf); 145 static FX_BOOL BmpInputImagePositionBufCallback(void* pModule, 146 FX_DWORD rcd_pos); 147 static void BmpReadScanlineCallback(void* pModule, 148 int32_t row_num, 149 uint8_t* row_buf); 150 151 FX_BOOL DetectImageType(FXCODEC_IMAGE_TYPE imageType, 152 CFX_DIBAttribute* pAttribute); 153 void GetDownScale(int& down_scale); 154 void GetTransMethod(FXDIB_Format des_format, FXCodec_Format src_format); 155 void ReSampleScanline(CFX_DIBitmap* pDeviceBitmap, 156 int32_t des_line, 157 uint8_t* src_scan, 158 FXCodec_Format src_format); 159 void Resample(CFX_DIBitmap* pDeviceBitmap, 160 int32_t src_line, 161 uint8_t* src_scan, 162 FXCodec_Format src_format); 163 void ResampleVert(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row); 164 FX_BOOL JpegReadMoreData(ICodec_JpegModule* pJpegModule, 165 FXCODEC_STATUS& err_status); 166 void PngOneOneMapResampleHorz(CFX_DIBitmap* pDeviceBitmap, 167 int32_t des_line, 168 uint8_t* src_scan, 169 FXCodec_Format src_format); 170 FX_BOOL GifReadMoreData(ICodec_GifModule* pGifModule, 171 FXCODEC_STATUS& err_status); 172 void GifDoubleLineResampleVert(CFX_DIBitmap* pDeviceBitmap, 173 double scale_y, 174 int des_row); 175 FX_BOOL BmpReadMoreData(ICodec_BmpModule* pBmpModule, 176 FXCODEC_STATUS& err_status); 177 void ResampleVertBT(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row); 178 179 public: 180 IFX_FileRead* m_pFile; 181 CCodec_ModuleMgr* m_pCodecMgr; 182 void* m_pJpegContext; 183 void* m_pPngContext; 184 void* m_pGifContext; 185 void* m_pBmpContext; 186 void* m_pTiffContext; 187 FXCODEC_IMAGE_TYPE m_imagType; 188 FX_DWORD m_offSet; 189 uint8_t* m_pSrcBuf; 190 FX_DWORD m_SrcSize; 191 uint8_t* m_pDecodeBuf; 192 int m_ScanlineSize; 193 CFX_DIBitmap* m_pDeviceBitmap; 194 FX_BOOL m_bInterpol; 195 CFXCODEC_WeightTable m_WeightHorz; 196 CFXCODEC_VertTable m_WeightVert; 197 CFXCODEC_HorzTable m_WeightHorzOO; 198 int m_SrcWidth; 199 int m_SrcHeight; 200 int m_SrcComponents; 201 int m_SrcBPC; 202 FX_RECT m_clipBox; 203 int m_startX; 204 int m_startY; 205 int m_sizeX; 206 int m_sizeY; 207 int m_TransMethod; 208 FX_ARGB* m_pSrcPalette; 209 int m_SrcPaletteNumber; 210 int m_SrcRow; 211 FXCodec_Format m_SrcFormat; 212 int m_SrcPassNumber; 213 int m_FrameNumber; 214 int m_FrameCur; 215 int m_GifBgIndex; 216 uint8_t* m_pGifPalette; 217 int32_t m_GifPltNumber; 218 int m_GifTransIndex; 219 FX_RECT m_GifFrameRect; 220 FX_BOOL m_BmpIsTopBottom; 221 FXCODEC_STATUS m_status; 222 }; 223 #endif 224
