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// Copyright 2017 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 CORE_FXGE_DIB_CFX_DIBSOURCE_H_
#define CORE_FXGE_DIB_CFX_DIBSOURCE_H_
#include <memory>
#include "core/fxcrt/cfx_retain_ptr.h"
#include "core/fxcrt/fx_basic.h"
#include "core/fxcrt/fx_coordinates.h"
enum FXDIB_Channel {
FXDIB_Red = 1,
FXDIB_Green,
FXDIB_Blue,
FXDIB_Cyan,
FXDIB_Magenta,
FXDIB_Yellow,
FXDIB_Black,
FXDIB_Alpha
};
enum FXDIB_Format {
FXDIB_Invalid = 0,
FXDIB_1bppMask = 0x101,
FXDIB_1bppRgb = 0x001,
FXDIB_1bppCmyk = 0x401,
FXDIB_8bppMask = 0x108,
FXDIB_8bppRgb = 0x008,
FXDIB_8bppRgba = 0x208,
FXDIB_8bppCmyk = 0x408,
FXDIB_8bppCmyka = 0x608,
FXDIB_Rgb = 0x018,
FXDIB_Rgba = 0x218,
FXDIB_Rgb32 = 0x020,
FXDIB_Argb = 0x220,
FXDIB_Cmyk = 0x420,
FXDIB_Cmyka = 0x620,
};
#define FXDIB_DOWNSAMPLE 0x04
#define FXDIB_INTERPOL 0x20
#define FXDIB_BICUBIC_INTERPOL 0x80
#define FXDIB_NOSMOOTH 0x100
#define FXDIB_BLEND_NORMAL 0
#define FXDIB_BLEND_MULTIPLY 1
#define FXDIB_BLEND_SCREEN 2
#define FXDIB_BLEND_OVERLAY 3
#define FXDIB_BLEND_DARKEN 4
#define FXDIB_BLEND_LIGHTEN 5
#define FXDIB_BLEND_COLORDODGE 6
#define FXDIB_BLEND_COLORBURN 7
#define FXDIB_BLEND_HARDLIGHT 8
#define FXDIB_BLEND_SOFTLIGHT 9
#define FXDIB_BLEND_DIFFERENCE 10
#define FXDIB_BLEND_EXCLUSION 11
#define FXDIB_BLEND_NONSEPARABLE 21
#define FXDIB_BLEND_HUE 21
#define FXDIB_BLEND_SATURATION 22
#define FXDIB_BLEND_COLOR 23
#define FXDIB_BLEND_LUMINOSITY 24
#define FXDIB_BLEND_UNSUPPORTED -1
class CFX_ClipRgn;
class CFX_DIBitmap;
class CFX_DIBSource : public CFX_Retainable {
public:
~CFX_DIBSource() override;
virtual uint8_t* GetBuffer() const;
virtual const uint8_t* GetScanline(int line) const = 0;
virtual bool SkipToScanline(int line, IFX_Pause* pPause) const;
virtual void DownSampleScanline(int line,
uint8_t* dest_scan,
int dest_bpp,
int dest_width,
bool bFlipX,
int clip_left,
int clip_width) const = 0;
int GetWidth() const { return m_Width; }
int GetHeight() const { return m_Height; }
FXDIB_Format GetFormat() const {
return (FXDIB_Format)(m_AlphaFlag * 0x100 + m_bpp);
}
uint32_t GetPitch() const { return m_Pitch; }
uint32_t* GetPalette() const { return m_pPalette.get(); }
int GetBPP() const { return m_bpp; }
// TODO(thestig): Investigate this. Given the possible values of FXDIB_Format,
// it feels as though this should be implemented as !!(m_AlphaFlag & 1) and
// IsOpaqueImage() below should never be able to return true.
bool IsAlphaMask() const { return m_AlphaFlag == 1; }
bool HasAlpha() const { return !!(m_AlphaFlag & 2); }
bool IsOpaqueImage() const { return !(m_AlphaFlag & 3); }
bool IsCmykImage() const { return !!(m_AlphaFlag & 4); }
int GetPaletteSize() const {
return IsAlphaMask() ? 0 : (m_bpp == 1 ? 2 : (m_bpp == 8 ? 256 : 0));
}
uint32_t GetPaletteEntry(int index) const;
void SetPaletteEntry(int index, uint32_t color);
uint32_t GetPaletteArgb(int index) const { return GetPaletteEntry(index); }
void SetPaletteArgb(int index, uint32_t color) {
SetPaletteEntry(index, color);
}
// Copies into internally-owned palette.
void SetPalette(const uint32_t* pSrcPal);
CFX_RetainPtr<CFX_DIBitmap> Clone(const FX_RECT* pClip = nullptr) const;
CFX_RetainPtr<CFX_DIBitmap> CloneConvert(FXDIB_Format format);
CFX_RetainPtr<CFX_DIBitmap> StretchTo(int dest_width,
int dest_height,
uint32_t flags = 0,
const FX_RECT* pClip = nullptr);
CFX_RetainPtr<CFX_DIBitmap> TransformTo(const CFX_Matrix* pMatrix,
int& left,
int& top,
uint32_t flags = 0,
const FX_RECT* pClip = nullptr);
CFX_RetainPtr<CFX_DIBitmap> SwapXY(bool bXFlip,
bool bYFlip,
const FX_RECT* pClip = nullptr) const;
CFX_RetainPtr<CFX_DIBitmap> FlipImage(bool bXFlip, bool bYFlip) const;
CFX_RetainPtr<CFX_DIBitmap> CloneAlphaMask(
const FX_RECT* pClip = nullptr) const;
// Copies into internally-owned mask.
bool SetAlphaMask(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask,
const FX_RECT* pClip = nullptr);
void GetOverlapRect(int& dest_left,
int& dest_top,
int& width,
int& height,
int src_width,
int src_height,
int& src_left,
int& src_top,
const CFX_ClipRgn* pClipRgn);
#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
void DebugVerifyBitmapIsPreMultiplied(void* buffer = nullptr) const;
#endif
CFX_RetainPtr<CFX_DIBitmap> m_pAlphaMask;
protected:
CFX_DIBSource();
void BuildPalette();
bool BuildAlphaMask();
int FindPalette(uint32_t color) const;
void GetPalette(uint32_t* pal, int alpha) const;
int m_Width;
int m_Height;
int m_bpp;
uint32_t m_AlphaFlag;
uint32_t m_Pitch;
// TODO(weili): Use std::vector for this.
std::unique_ptr<uint32_t, FxFreeDeleter> m_pPalette;
};
#endif // CORE_FXGE_DIB_CFX_DIBSOURCE_H_
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