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// Copyright 2014 PDFium Authors. All rights reserved.
// 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 _FX_CODEC_PROGRESS_H_
#define _FX_CODEC_PROGRESS_H_
#define FXCODEC_BLOCK_SIZE 4096
#define FXCODEC_PNG_GAMMA 2.2
#if _FX_OS_ == _FX_MACOSX_ || _FX_OS_ == _FX_IOS_
#undef FXCODEC_PNG_GAMMA
#define FXCODEC_PNG_GAMMA 1.7
#endif
struct PixelWeight {
int m_SrcStart;
int m_SrcEnd;
int m_Weights[1];
};
class CFXCODEC_WeightTable {
public:
CFXCODEC_WeightTable() { m_pWeightTables = NULL; }
~CFXCODEC_WeightTable() {
if (m_pWeightTables != NULL) {
FX_Free(m_pWeightTables);
}
}
void Calc(int dest_len,
int dest_min,
int dest_max,
int src_len,
int src_min,
int src_max,
FX_BOOL bInterpol);
PixelWeight* GetPixelWeight(int pixel) {
return (PixelWeight*)(m_pWeightTables + (pixel - m_DestMin) * m_ItemSize);
}
int m_DestMin, m_ItemSize;
uint8_t* m_pWeightTables;
};
class CFXCODEC_HorzTable {
public:
CFXCODEC_HorzTable() { m_pWeightTables = NULL; }
~CFXCODEC_HorzTable() {
if (m_pWeightTables != NULL) {
FX_Free(m_pWeightTables);
}
}
void Calc(int dest_len, int src_len, FX_BOOL bInterpol);
PixelWeight* GetPixelWeight(int pixel) {
return (PixelWeight*)(m_pWeightTables + pixel * m_ItemSize);
}
int m_ItemSize;
uint8_t* m_pWeightTables;
};
class CFXCODEC_VertTable {
public:
CFXCODEC_VertTable() { m_pWeightTables = NULL; }
~CFXCODEC_VertTable() {
if (m_pWeightTables != NULL) {
FX_Free(m_pWeightTables);
}
}
void Calc(int dest_len, int src_len);
PixelWeight* GetPixelWeight(int pixel) {
return (PixelWeight*)(m_pWeightTables + pixel * m_ItemSize);
}
int m_ItemSize;
uint8_t* m_pWeightTables;
};
enum FXCodec_Format {
FXCodec_Invalid = 0,
FXCodec_1bppGray = 0x101,
FXCodec_1bppRgb = 0x001,
FXCodec_8bppGray = 0x108,
FXCodec_8bppRgb = 0x008,
FXCodec_Rgb = 0x018,
FXCodec_Rgb32 = 0x020,
FXCodec_Argb = 0x220,
FXCodec_Cmyk = 0x120
};
class CCodec_ProgressiveDecoder : public ICodec_ProgressiveDecoder {
public:
CCodec_ProgressiveDecoder(CCodec_ModuleMgr* pCodecMgr);
~CCodec_ProgressiveDecoder() override;
FXCODEC_STATUS LoadImageInfo(IFX_FileRead* pFile,
FXCODEC_IMAGE_TYPE imageType,
CFX_DIBAttribute* pAttribute) override;
FXCODEC_IMAGE_TYPE GetType() const override { return m_imagType; }
int32_t GetWidth() const override { return m_SrcWidth; }
int32_t GetHeight() const override { return m_SrcHeight; }
int32_t GetNumComponents() const override { return m_SrcComponents; }
int32_t GetBPC() const override { return m_SrcBPC; }
void SetClipBox(FX_RECT* clip) override;
FXCODEC_STATUS GetFrames(int32_t& frames, IFX_Pause* pPause) override;
FXCODEC_STATUS StartDecode(CFX_DIBitmap* pDIBitmap,
int start_x,
int start_y,
int size_x,
int size_y,
int32_t frames,
FX_BOOL bInterpol) override;
FXCODEC_STATUS ContinueDecode(IFX_Pause* pPause) override;
protected:
static FX_BOOL PngReadHeaderFunc(void* pModule,
int width,
int height,
int bpc,
int pass,
int* color_type,
double* gamma);
static FX_BOOL PngAskScanlineBufFunc(void* pModule,
int line,
uint8_t*& src_buf);
static void PngFillScanlineBufCompletedFunc(void* pModule,
int pass,
int line);
static void GifRecordCurrentPositionCallback(void* pModule,
FX_DWORD& cur_pos);
static uint8_t* GifAskLocalPaletteBufCallback(void* pModule,
int32_t frame_num,
int32_t pal_size);
static FX_BOOL GifInputRecordPositionBufCallback(void* pModule,
FX_DWORD rcd_pos,
const FX_RECT& img_rc,
int32_t pal_num,
void* pal_ptr,
int32_t delay_time,
FX_BOOL user_input,
int32_t trans_index,
int32_t disposal_method,
FX_BOOL interlace);
static void GifReadScanlineCallback(void* pModule,
int32_t row_num,
uint8_t* row_buf);
static FX_BOOL BmpInputImagePositionBufCallback(void* pModule,
FX_DWORD rcd_pos);
static void BmpReadScanlineCallback(void* pModule,
int32_t row_num,
uint8_t* row_buf);
FX_BOOL DetectImageType(FXCODEC_IMAGE_TYPE imageType,
CFX_DIBAttribute* pAttribute);
void GetDownScale(int& down_scale);
void GetTransMethod(FXDIB_Format des_format, FXCodec_Format src_format);
void ReSampleScanline(CFX_DIBitmap* pDeviceBitmap,
int32_t des_line,
uint8_t* src_scan,
FXCodec_Format src_format);
void Resample(CFX_DIBitmap* pDeviceBitmap,
int32_t src_line,
uint8_t* src_scan,
FXCodec_Format src_format);
void ResampleVert(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row);
FX_BOOL JpegReadMoreData(ICodec_JpegModule* pJpegModule,
FXCODEC_STATUS& err_status);
void PngOneOneMapResampleHorz(CFX_DIBitmap* pDeviceBitmap,
int32_t des_line,
uint8_t* src_scan,
FXCodec_Format src_format);
FX_BOOL GifReadMoreData(ICodec_GifModule* pGifModule,
FXCODEC_STATUS& err_status);
void GifDoubleLineResampleVert(CFX_DIBitmap* pDeviceBitmap,
double scale_y,
int des_row);
FX_BOOL BmpReadMoreData(ICodec_BmpModule* pBmpModule,
FXCODEC_STATUS& err_status);
void ResampleVertBT(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row);
public:
IFX_FileRead* m_pFile;
CCodec_ModuleMgr* m_pCodecMgr;
void* m_pJpegContext;
void* m_pPngContext;
void* m_pGifContext;
void* m_pBmpContext;
void* m_pTiffContext;
FXCODEC_IMAGE_TYPE m_imagType;
FX_DWORD m_offSet;
uint8_t* m_pSrcBuf;
FX_DWORD m_SrcSize;
uint8_t* m_pDecodeBuf;
int m_ScanlineSize;
CFX_DIBitmap* m_pDeviceBitmap;
FX_BOOL m_bInterpol;
CFXCODEC_WeightTable m_WeightHorz;
CFXCODEC_VertTable m_WeightVert;
CFXCODEC_HorzTable m_WeightHorzOO;
int m_SrcWidth;
int m_SrcHeight;
int m_SrcComponents;
int m_SrcBPC;
FX_RECT m_clipBox;
int m_startX;
int m_startY;
int m_sizeX;
int m_sizeY;
int m_TransMethod;
FX_ARGB* m_pSrcPalette;
int m_SrcPaletteNumber;
int m_SrcRow;
FXCodec_Format m_SrcFormat;
int m_SrcPassNumber;
int m_FrameNumber;
int m_FrameCur;
int m_GifBgIndex;
uint8_t* m_pGifPalette;
int32_t m_GifPltNumber;
int m_GifTransIndex;
FX_RECT m_GifFrameRect;
FX_BOOL m_BmpIsTopBottom;
FXCODEC_STATUS m_status;
};
#endif
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