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epoger@google.comec3ed6a2011-07-28 14:26:00 +00001
reed@android.com8a1c16f2008-12-17 15:59:43 +00002/*
epoger@google.comec3ed6a2011-07-28 14:26:00 +00003 * Copyright 2007 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
reed@android.com8a1c16f2008-12-17 15:59:43 +00009
10#ifndef SkBitmapProcState_DEFINED
11#define SkBitmapProcState_DEFINED
12
13#include "SkBitmap.h"
14#include "SkMatrix.h"
15
reed@google.com77613a52012-03-14 12:21:17 +000016#define FractionalInt_IS_64BIT
reed@google.com4bc0a9d2012-03-07 21:47:41 +000017
18#ifdef FractionalInt_IS_64BIT
19 typedef SkFixed48 SkFractionalInt;
20 #define SkScalarToFractionalInt(x) SkScalarToFixed48(x)
21 #define SkFractionalIntToFixed(x) SkFixed48ToFixed(x)
reed@google.com411215a2012-03-08 20:13:46 +000022 #define SkFixedToFractionalInt(x) SkFixedToFixed48(x)
reed@google.com4bc0a9d2012-03-07 21:47:41 +000023 #define SkFractionalIntToInt(x) SkFixed48ToInt(x)
24#else
25 typedef SkFixed SkFractionalInt;
26 #define SkScalarToFractionalInt(x) SkScalarToFixed(x)
27 #define SkFractionalIntToFixed(x) (x)
reed@google.com411215a2012-03-08 20:13:46 +000028 #define SkFixedToFractionalInt(x) (x)
reed@google.com4bc0a9d2012-03-07 21:47:41 +000029 #define SkFractionalIntToInt(x) ((x) >> 16)
30#endif
31
reed@android.com8a1c16f2008-12-17 15:59:43 +000032class SkPaint;
33
34struct SkBitmapProcState {
35
reed@android.com7a99eb12009-07-16 01:13:14 +000036 typedef void (*ShaderProc32)(const SkBitmapProcState&, int x, int y,
37 SkPMColor[], int count);
38
39 typedef void (*ShaderProc16)(const SkBitmapProcState&, int x, int y,
40 uint16_t[], int count);
41
reed@android.com8a1c16f2008-12-17 15:59:43 +000042 typedef void (*MatrixProc)(const SkBitmapProcState&,
43 uint32_t bitmapXY[],
44 int count,
45 int x, int y);
rmistry@google.comfbfcd562012-08-23 18:09:54 +000046
reed@android.com8a1c16f2008-12-17 15:59:43 +000047 typedef void (*SampleProc32)(const SkBitmapProcState&,
48 const uint32_t[],
49 int count,
50 SkPMColor colors[]);
51
52 typedef void (*SampleProc16)(const SkBitmapProcState&,
53 const uint32_t[],
54 int count,
55 uint16_t colors[]);
rmistry@google.comfbfcd562012-08-23 18:09:54 +000056
reed@android.com8a1c16f2008-12-17 15:59:43 +000057 typedef U16CPU (*FixedTileProc)(SkFixed); // returns 0..0xFFFF
reed@google.comf444e8c2012-03-09 19:59:46 +000058 typedef U16CPU (*FixedTileLowBitsProc)(SkFixed, int); // returns 0..0xF
reed@android.com07d1f002009-08-13 19:35:48 +000059 typedef U16CPU (*IntTileProc)(int value, int count); // returns 0..count-1
reed@android.com7a99eb12009-07-16 01:13:14 +000060
reed@android.comeef375b2009-08-03 14:45:45 +000061 const SkBitmap* fBitmap; // chooseProcs - orig or mip
62 const SkMatrix* fInvMatrix; // chooseProcs
63 SkMatrix::MapXYProc fInvProc; // chooseProcs
64
reed@google.com4bc0a9d2012-03-07 21:47:41 +000065 SkFractionalInt fInvSxFractionalInt;
reed@google.com411215a2012-03-08 20:13:46 +000066 SkFractionalInt fInvKyFractionalInt;
rmistry@google.comfbfcd562012-08-23 18:09:54 +000067
reed@android.com8a1c16f2008-12-17 15:59:43 +000068 FixedTileProc fTileProcX; // chooseProcs
69 FixedTileProc fTileProcY; // chooseProcs
reed@google.comf444e8c2012-03-09 19:59:46 +000070 FixedTileLowBitsProc fTileLowBitsProcX; // chooseProcs
71 FixedTileLowBitsProc fTileLowBitsProcY; // chooseProcs
reed@android.com07d1f002009-08-13 19:35:48 +000072 IntTileProc fIntTileProcY; // chooseProcs
reed@android.com8a1c16f2008-12-17 15:59:43 +000073 SkFixed fFilterOneX;
74 SkFixed fFilterOneY;
75
reed@android.com8a1c16f2008-12-17 15:59:43 +000076 SkPMColor fPaintPMColor; // chooseProcs - A8 config
reed@android.comeef375b2009-08-03 14:45:45 +000077 SkFixed fInvSx; // chooseProcs
reed@android.com8a1c16f2008-12-17 15:59:43 +000078 SkFixed fInvKy; // chooseProcs
reed@android.com8a1c16f2008-12-17 15:59:43 +000079 uint16_t fAlphaScale; // chooseProcs
80 uint8_t fInvType; // chooseProcs
81 uint8_t fTileModeX; // CONSTRUCTOR
82 uint8_t fTileModeY; // CONSTRUCTOR
83 SkBool8 fDoFilter; // chooseProcs
reed@android.com8a1c16f2008-12-17 15:59:43 +000084
reed@android.comc9a1d4b2009-08-03 15:05:55 +000085 /** Platforms implement this, and can optionally overwrite only the
86 following fields:
87
88 fShaderProc32
89 fShaderProc16
90 fMatrixProc
91 fSampleProc32
92 fSampleProc32
93
94 They will already have valid function pointers, so a platform that does
95 not have an accelerated version can just leave that field as is. A valid
96 implementation can do nothing (see SkBitmapProcState_opts_none.cpp)
97 */
98 void platformProcs();
99
reed@android.com258cb222010-04-14 13:36:33 +0000100 /** Given the byte size of the index buffer to be passed to the matrix proc,
101 return the maximum number of resulting pixels that can be computed
102 (i.e. the number of SkPMColor values to be written by the sample proc).
103 This routine takes into account that filtering and scale-vs-affine
104 affect the amount of buffer space needed.
rmistry@google.comfbfcd562012-08-23 18:09:54 +0000105
reed@android.com4c128c42009-08-14 13:54:37 +0000106 Only valid to call after chooseProcs (setContext) has been called. It is
107 safe to call this inside the shader's shadeSpan() method.
108 */
109 int maxCountForBufferSize(size_t bufferSize) const;
110
reed@google.com9fe287b2012-03-27 15:54:28 +0000111 // If a shader proc is present, then the corresponding matrix/sample procs
112 // are ignored
113 ShaderProc32 getShaderProc32() const { return fShaderProc32; }
114 ShaderProc16 getShaderProc16() const { return fShaderProc16; }
115
116#ifdef SK_DEBUG
117 MatrixProc getMatrixProc() const;
118#else
119 MatrixProc getMatrixProc() const { return fMatrixProc; }
120#endif
121 SampleProc32 getSampleProc32() const { return fSampleProc32; }
122 SampleProc16 getSampleProc16() const { return fSampleProc16; }
123
reed@android.com8a1c16f2008-12-17 15:59:43 +0000124private:
reed@android.comeef375b2009-08-03 14:45:45 +0000125 friend class SkBitmapProcShader;
126
reed@google.com9fe287b2012-03-27 15:54:28 +0000127 ShaderProc32 fShaderProc32; // chooseProcs
128 ShaderProc16 fShaderProc16; // chooseProcs
129 // These are used if the shaderproc is NULL
130 MatrixProc fMatrixProc; // chooseProcs
131 SampleProc32 fSampleProc32; // chooseProcs
132 SampleProc16 fSampleProc16; // chooseProcs
rmistry@google.comfbfcd562012-08-23 18:09:54 +0000133
reed@android.comeef375b2009-08-03 14:45:45 +0000134 SkMatrix fUnitInvMatrix; // chooseProcs
135 SkBitmap fOrigBitmap; // CONSTRUCTOR
136 SkBitmap fMipBitmap;
137
reed@android.com07d1f002009-08-13 19:35:48 +0000138 MatrixProc chooseMatrixProc(bool trivial_matrix);
reed@android.comeef375b2009-08-03 14:45:45 +0000139 bool chooseProcs(const SkMatrix& inv, const SkPaint&);
reed@google.com9a4c7462012-10-12 18:21:37 +0000140 ShaderProc32 chooseShaderProc32();
reed@google.com9fe287b2012-03-27 15:54:28 +0000141
142#ifdef SK_DEBUG
143 static void DebugMatrixProc(const SkBitmapProcState&,
144 uint32_t[], int count, int x, int y);
145#endif
reed@android.com8a1c16f2008-12-17 15:59:43 +0000146};
147
reed@android.com07d1f002009-08-13 19:35:48 +0000148/* Macros for packing and unpacking pairs of 16bit values in a 32bit uint.
149 Used to allow access to a stream of uint16_t either one at a time, or
150 2 at a time by unpacking a uint32_t
151 */
152#ifdef SK_CPU_BENDIAN
153 #define PACK_TWO_SHORTS(pri, sec) ((pri) << 16 | (sec))
154 #define UNPACK_PRIMARY_SHORT(packed) ((uint32_t)(packed) >> 16)
155 #define UNPACK_SECONDARY_SHORT(packed) ((packed) & 0xFFFF)
156#else
157 #define PACK_TWO_SHORTS(pri, sec) ((pri) | ((sec) << 16))
158 #define UNPACK_PRIMARY_SHORT(packed) ((packed) & 0xFFFF)
159 #define UNPACK_SECONDARY_SHORT(packed) ((uint32_t)(packed) >> 16)
160#endif
161
162#ifdef SK_DEBUG
163 static inline uint32_t pack_two_shorts(U16CPU pri, U16CPU sec) {
164 SkASSERT((uint16_t)pri == pri);
165 SkASSERT((uint16_t)sec == sec);
166 return PACK_TWO_SHORTS(pri, sec);
167 }
168#else
169 #define pack_two_shorts(pri, sec) PACK_TWO_SHORTS(pri, sec)
170#endif
171
senorblanco@chromium.orgdc7de742009-11-30 20:00:29 +0000172// These functions are generated via macros, but are exposed here so that
173// platformProcs may test for them by name.
174void S32_opaque_D32_filter_DX(const SkBitmapProcState& s, const uint32_t xy[],
175 int count, SkPMColor colors[]);
senorblanco@chromium.orgf3f0bd72009-12-10 22:46:31 +0000176void S32_alpha_D32_filter_DX(const SkBitmapProcState& s, const uint32_t xy[],
177 int count, SkPMColor colors[]);
rmistry@google.comfbfcd562012-08-23 18:09:54 +0000178void S32_opaque_D32_filter_DXDY(const SkBitmapProcState& s,
179 const uint32_t xy[], int count, SkPMColor colors[]);
180void S32_alpha_D32_filter_DXDY(const SkBitmapProcState& s,
tomhudson@google.comae29b882012-03-06 14:59:04 +0000181 const uint32_t xy[], int count, SkPMColor colors[]);
tomhudson@google.com06a73132012-02-22 18:30:43 +0000182void ClampX_ClampY_filter_scale(const SkBitmapProcState& s, uint32_t xy[],
183 int count, int x, int y);
184void ClampX_ClampY_nofilter_scale(const SkBitmapProcState& s, uint32_t xy[],
185 int count, int x, int y);
tomhudson@google.com5efaf262012-02-28 15:41:49 +0000186void ClampX_ClampY_filter_affine(const SkBitmapProcState& s,
187 uint32_t xy[], int count, int x, int y);
188void ClampX_ClampY_nofilter_affine(const SkBitmapProcState& s,
189 uint32_t xy[], int count, int x, int y);
reed@google.com78662282012-07-24 13:53:23 +0000190void S32_D16_filter_DX(const SkBitmapProcState& s,
191 const uint32_t* xy, int count, uint16_t* colors);
senorblanco@chromium.orgdc7de742009-11-30 20:00:29 +0000192
reed@android.com8a1c16f2008-12-17 15:59:43 +0000193#endif