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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 CORE_FXGE_FX_DIB_H_
#define CORE_FXGE_FX_DIB_H_
#include <tuple>
#include <utility>
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/widestring.h"
enum FXDIB_Format {
FXDIB_Invalid = 0,
FXDIB_1bppRgb = 0x001,
FXDIB_8bppRgb = 0x008,
FXDIB_Rgb = 0x018,
FXDIB_Rgb32 = 0x020,
FXDIB_1bppMask = 0x101,
FXDIB_8bppMask = 0x108,
FXDIB_8bppRgba = 0x208,
FXDIB_Rgba = 0x218,
FXDIB_Argb = 0x220,
FXDIB_1bppCmyk = 0x401,
FXDIB_8bppCmyk = 0x408,
FXDIB_Cmyk = 0x420,
FXDIB_8bppCmyka = 0x608,
FXDIB_Cmyka = 0x620,
};
struct PixelWeight {
int m_SrcStart;
int m_SrcEnd;
int m_Weights[1];
};
using FX_ARGB = uint32_t;
// FX_COLORREF, like win32 COLORREF, is BGR.
using FX_COLORREF = uint32_t;
using FX_CMYK = uint32_t;
extern const int16_t SDP_Table[513];
#define FXDIB_DOWNSAMPLE 0x04
#define FXDIB_INTERPOL 0x20
#define FXDIB_BICUBIC_INTERPOL 0x80
#define FXDIB_NOSMOOTH 0x100
// See PDF 1.7 spec, table 7.2 and 7.3. The enum values need to be in the same
// order as listed in the spec.
enum class BlendMode {
kNormal = 0,
kMultiply,
kScreen,
kOverlay,
kDarken,
kLighten,
kColorDodge,
kColorBurn,
kHardLight,
kSoftLight,
kDifference,
kExclusion,
kHue,
kSaturation,
kColor,
kLuminosity,
};
constexpr uint32_t FXSYS_BGR(uint8_t b, uint8_t g, uint8_t r) {
return (b << 16) | (g << 8) | r;
}
constexpr uint8_t FXSYS_GetRValue(uint32_t bgr) {
return bgr & 0xff;
}
constexpr uint8_t FXSYS_GetGValue(uint32_t bgr) {
return (bgr >> 8) & 0xff;
}
constexpr uint8_t FXSYS_GetBValue(uint32_t bgr) {
return (bgr >> 16) & 0xff;
}
#define FXSYS_GetCValue(cmyk) ((uint8_t)((cmyk) >> 24) & 0xff)
#define FXSYS_GetMValue(cmyk) ((uint8_t)((cmyk) >> 16) & 0xff)
#define FXSYS_GetYValue(cmyk) ((uint8_t)((cmyk) >> 8) & 0xff)
#define FXSYS_GetKValue(cmyk) ((uint8_t)(cmyk)&0xff)
inline int GetBppFromFormat(FXDIB_Format format) {
return format & 0xff;
}
inline int GetCompsFromFormat(FXDIB_Format format) {
return (format & 0xff) / 8;
}
inline FX_CMYK CmykEncode(int c, int m, int y, int k) {
return (c << 24) | (m << 16) | (y << 8) | k;
}
// Returns (a, r, g, b)
std::tuple<int, int, int, int> ArgbDecode(FX_ARGB argb);
// Returns (a, FX_COLORREF)
std::pair<int, FX_COLORREF> ArgbToAlphaAndColorRef(FX_ARGB argb);
// Returns FX_COLORREF.
FX_COLORREF ArgbToColorRef(FX_ARGB argb);
constexpr FX_ARGB ArgbEncode(int a, int r, int g, int b) {
return (a << 24) | (r << 16) | (g << 8) | b;
}
FX_ARGB AlphaAndColorRefToArgb(int a, FX_COLORREF colorref);
FX_ARGB StringToFXARGB(const WideStringView& view);
#define FXARGB_A(argb) ((uint8_t)((argb) >> 24))
#define FXARGB_R(argb) ((uint8_t)((argb) >> 16))
#define FXARGB_G(argb) ((uint8_t)((argb) >> 8))
#define FXARGB_B(argb) ((uint8_t)(argb))
#define FXARGB_MUL_ALPHA(argb, alpha) \
(((((argb) >> 24) * (alpha) / 255) << 24) | ((argb)&0xffffff))
#define FXRGB2GRAY(r, g, b) (((b)*11 + (g)*59 + (r)*30) / 100)
#define FXDIB_ALPHA_MERGE(backdrop, source, source_alpha) \
(((backdrop) * (255 - (source_alpha)) + (source) * (source_alpha)) / 255)
#define FXARGB_GETDIB(p) \
((((uint8_t*)(p))[0]) | (((uint8_t*)(p))[1] << 8) | \
(((uint8_t*)(p))[2] << 16) | (((uint8_t*)(p))[3] << 24))
#define FXARGB_SETDIB(p, argb) \
((uint8_t*)(p))[0] = (uint8_t)(argb), \
((uint8_t*)(p))[1] = (uint8_t)((argb) >> 8), \
((uint8_t*)(p))[2] = (uint8_t)((argb) >> 16), \
((uint8_t*)(p))[3] = (uint8_t)((argb) >> 24)
#define FXARGB_SETRGBORDERDIB(p, argb) \
((uint8_t*)(p))[3] = (uint8_t)(argb >> 24), \
((uint8_t*)(p))[0] = (uint8_t)((argb) >> 16), \
((uint8_t*)(p))[1] = (uint8_t)((argb) >> 8), \
((uint8_t*)(p))[2] = (uint8_t)(argb)
#define FXARGB_TODIB(argb) (argb)
#define FXCMYK_TODIB(cmyk) \
((uint8_t)((cmyk) >> 24) | ((uint8_t)((cmyk) >> 16)) << 8 | \
((uint8_t)((cmyk) >> 8)) << 16 | ((uint8_t)(cmyk) << 24))
#define FXARGB_TOBGRORDERDIB(argb) \
((uint8_t)(argb >> 16) | ((uint8_t)(argb >> 8)) << 8 | \
((uint8_t)(argb)) << 16 | ((uint8_t)(argb >> 24) << 24))
FX_RECT FXDIB_SwapClipBox(const FX_RECT& clip,
int width,
int height,
bool bFlipX,
bool bFlipY);
#endif // CORE_FXGE_FX_DIB_H_
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