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 CORE_FXGE_FX_DIB_H_
8#define CORE_FXGE_FX_DIB_H_
9
10#include <tuple>
11#include <utility>
12
13#include "core/fxcrt/fx_coordinates.h"
14#include "core/fxcrt/widestring.h"
15
16enum FXDIB_Format {
17  FXDIB_Invalid = 0,
18  FXDIB_1bppRgb = 0x001,
19  FXDIB_8bppRgb = 0x008,
20  FXDIB_Rgb = 0x018,
21  FXDIB_Rgb32 = 0x020,
22  FXDIB_1bppMask = 0x101,
23  FXDIB_8bppMask = 0x108,
24  FXDIB_8bppRgba = 0x208,
25  FXDIB_Rgba = 0x218,
26  FXDIB_Argb = 0x220,
27  FXDIB_1bppCmyk = 0x401,
28  FXDIB_8bppCmyk = 0x408,
29  FXDIB_Cmyk = 0x420,
30  FXDIB_8bppCmyka = 0x608,
31  FXDIB_Cmyka = 0x620,
32};
33
34struct PixelWeight {
35  int m_SrcStart;
36  int m_SrcEnd;
37  int m_Weights[1];
38};
39
40typedef uint32_t FX_ARGB;
41typedef uint32_t FX_COLORREF;
42typedef uint32_t FX_CMYK;
43class CFX_ClipRgn;
44class CFX_DIBSource;
45class CStretchEngine;
46
47extern const int16_t SDP_Table[513];
48
49#define FXDIB_DOWNSAMPLE 0x04
50#define FXDIB_INTERPOL 0x20
51#define FXDIB_BICUBIC_INTERPOL 0x80
52#define FXDIB_NOSMOOTH 0x100
53
54#define FXDIB_BLEND_NORMAL 0
55#define FXDIB_BLEND_MULTIPLY 1
56#define FXDIB_BLEND_SCREEN 2
57#define FXDIB_BLEND_OVERLAY 3
58#define FXDIB_BLEND_DARKEN 4
59#define FXDIB_BLEND_LIGHTEN 5
60#define FXDIB_BLEND_COLORDODGE 6
61#define FXDIB_BLEND_COLORBURN 7
62#define FXDIB_BLEND_HARDLIGHT 8
63#define FXDIB_BLEND_SOFTLIGHT 9
64#define FXDIB_BLEND_DIFFERENCE 10
65#define FXDIB_BLEND_EXCLUSION 11
66#define FXDIB_BLEND_NONSEPARABLE 21
67#define FXDIB_BLEND_HUE 21
68#define FXDIB_BLEND_SATURATION 22
69#define FXDIB_BLEND_COLOR 23
70#define FXDIB_BLEND_LUMINOSITY 24
71#define FXDIB_BLEND_UNSUPPORTED -1
72
73#define FXSYS_RGB(r, g, b) ((r) | ((g) << 8) | ((b) << 16))
74#define FXSYS_GetRValue(rgb) ((rgb)&0xff)
75#define FXSYS_GetGValue(rgb) (((rgb) >> 8) & 0xff)
76#define FXSYS_GetBValue(rgb) (((rgb) >> 16) & 0xff)
77
78#define FXSYS_GetCValue(cmyk) ((uint8_t)((cmyk) >> 24) & 0xff)
79#define FXSYS_GetMValue(cmyk) ((uint8_t)((cmyk) >> 16) & 0xff)
80#define FXSYS_GetYValue(cmyk) ((uint8_t)((cmyk) >> 8) & 0xff)
81#define FXSYS_GetKValue(cmyk) ((uint8_t)(cmyk)&0xff)
82
83inline FX_CMYK CmykEncode(int c, int m, int y, int k) {
84  return (c << 24) | (m << 16) | (y << 8) | k;
85}
86
87// Returns tuple a, r, g, b
88std::tuple<int, int, int, int> ArgbDecode(FX_ARGB argb);
89
90// Returns pair a, rgb
91std::pair<int, FX_COLORREF> ArgbToColorRef(FX_ARGB argb);
92
93inline FX_ARGB ArgbEncode(int a, int r, int g, int b) {
94  return (a << 24) | (r << 16) | (g << 8) | b;
95}
96FX_ARGB ArgbEncode(int a, FX_COLORREF rgb);
97
98FX_ARGB StringToFXARGB(const WideStringView& view);
99
100#define FXARGB_A(argb) ((uint8_t)((argb) >> 24))
101#define FXARGB_R(argb) ((uint8_t)((argb) >> 16))
102#define FXARGB_G(argb) ((uint8_t)((argb) >> 8))
103#define FXARGB_B(argb) ((uint8_t)(argb))
104#define FXARGB_MAKE(a, r, g, b) \
105  (((uint32_t)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
106#define FXARGB_MUL_ALPHA(argb, alpha) \
107  (((((argb) >> 24) * (alpha) / 255) << 24) | ((argb)&0xffffff))
108
109#define FXRGB2GRAY(r, g, b) (((b)*11 + (g)*59 + (r)*30) / 100)
110#define FXDIB_ALPHA_MERGE(backdrop, source, source_alpha) \
111  (((backdrop) * (255 - (source_alpha)) + (source) * (source_alpha)) / 255)
112#define FXARGB_GETDIB(p)                              \
113  ((((uint8_t*)(p))[0]) | (((uint8_t*)(p))[1] << 8) | \
114   (((uint8_t*)(p))[2] << 16) | (((uint8_t*)(p))[3] << 24))
115#define FXARGB_SETDIB(p, argb)                  \
116  ((uint8_t*)(p))[0] = (uint8_t)(argb),         \
117  ((uint8_t*)(p))[1] = (uint8_t)((argb) >> 8),  \
118  ((uint8_t*)(p))[2] = (uint8_t)((argb) >> 16), \
119  ((uint8_t*)(p))[3] = (uint8_t)((argb) >> 24)
120#define FXARGB_SETRGBORDERDIB(p, argb)          \
121  ((uint8_t*)(p))[3] = (uint8_t)(argb >> 24),   \
122  ((uint8_t*)(p))[0] = (uint8_t)((argb) >> 16), \
123  ((uint8_t*)(p))[1] = (uint8_t)((argb) >> 8),  \
124  ((uint8_t*)(p))[2] = (uint8_t)(argb)
125#define FXARGB_TODIB(argb) (argb)
126#define FXCMYK_TODIB(cmyk)                                    \
127  ((uint8_t)((cmyk) >> 24) | ((uint8_t)((cmyk) >> 16)) << 8 | \
128   ((uint8_t)((cmyk) >> 8)) << 16 | ((uint8_t)(cmyk) << 24))
129#define FXARGB_TOBGRORDERDIB(argb)                       \
130  ((uint8_t)(argb >> 16) | ((uint8_t)(argb >> 8)) << 8 | \
131   ((uint8_t)(argb)) << 16 | ((uint8_t)(argb >> 24) << 24))
132
133FX_RECT FXDIB_SwapClipBox(FX_RECT& clip,
134                          int width,
135                          int height,
136                          bool bFlipX,
137                          bool bFlipY);
138
139#endif  // CORE_FXGE_FX_DIB_H_
140