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comparison: gfx/skia/trunk/src/core/SkBitmapProcState.h
gfx/skia/trunk/src/core/SkBitmapProcState.h
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| -1:000000000000 | 0:661f89056226 |
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| 1 | |
| 2 /* | |
| 3 * 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 | |
| 9 | |
| 10 #ifndef SkBitmapProcState_DEFINED | |
| 11 #define SkBitmapProcState_DEFINED | |
| 12 | |
| 13 #include "SkBitmap.h" | |
| 14 #include "SkBitmapFilter.h" | |
| 15 #include "SkMatrix.h" | |
| 16 #include "SkPaint.h" | |
| 17 #include "SkScaledImageCache.h" | |
| 18 | |
| 19 #define FractionalInt_IS_64BIT | |
| 20 | |
| 21 #ifdef FractionalInt_IS_64BIT | |
| 22 typedef SkFixed48 SkFractionalInt; | |
| 23 #define SkScalarToFractionalInt(x) SkScalarToFixed48(x) | |
| 24 #define SkFractionalIntToFixed(x) SkFixed48ToFixed(x) | |
| 25 #define SkFixedToFractionalInt(x) SkFixedToFixed48(x) | |
| 26 #define SkFractionalIntToInt(x) SkFixed48ToInt(x) | |
| 27 #else | |
| 28 typedef SkFixed SkFractionalInt; | |
| 29 #define SkScalarToFractionalInt(x) SkScalarToFixed(x) | |
| 30 #define SkFractionalIntToFixed(x) (x) | |
| 31 #define SkFixedToFractionalInt(x) (x) | |
| 32 #define SkFractionalIntToInt(x) ((x) >> 16) | |
| 33 #endif | |
| 34 | |
| 35 class SkPaint; | |
| 36 struct SkConvolutionProcs; | |
| 37 | |
| 38 struct SkBitmapProcState { | |
| 39 | |
| 40 SkBitmapProcState(): fScaledCacheID(NULL), fBitmapFilter(NULL) {} | |
| 41 ~SkBitmapProcState(); | |
| 42 | |
| 43 typedef void (*ShaderProc32)(const SkBitmapProcState&, int x, int y, | |
| 44 SkPMColor[], int count); | |
| 45 | |
| 46 typedef void (*ShaderProc16)(const SkBitmapProcState&, int x, int y, | |
| 47 uint16_t[], int count); | |
| 48 | |
| 49 typedef void (*MatrixProc)(const SkBitmapProcState&, | |
| 50 uint32_t bitmapXY[], | |
| 51 int count, | |
| 52 int x, int y); | |
| 53 | |
| 54 typedef void (*SampleProc32)(const SkBitmapProcState&, | |
| 55 const uint32_t[], | |
| 56 int count, | |
| 57 SkPMColor colors[]); | |
| 58 | |
| 59 typedef void (*SampleProc16)(const SkBitmapProcState&, | |
| 60 const uint32_t[], | |
| 61 int count, | |
| 62 uint16_t colors[]); | |
| 63 | |
| 64 typedef U16CPU (*FixedTileProc)(SkFixed); // returns 0..0xFFFF | |
| 65 typedef U16CPU (*FixedTileLowBitsProc)(SkFixed, int); // returns 0..0xF | |
| 66 typedef U16CPU (*IntTileProc)(int value, int count); // returns 0..count-1 | |
| 67 | |
| 68 const SkBitmap* fBitmap; // chooseProcs - orig or scaled | |
| 69 SkMatrix fInvMatrix; // chooseProcs | |
| 70 SkMatrix::MapXYProc fInvProc; // chooseProcs | |
| 71 | |
| 72 SkFractionalInt fInvSxFractionalInt; | |
| 73 SkFractionalInt fInvKyFractionalInt; | |
| 74 | |
| 75 FixedTileProc fTileProcX; // chooseProcs | |
| 76 FixedTileProc fTileProcY; // chooseProcs | |
| 77 FixedTileLowBitsProc fTileLowBitsProcX; // chooseProcs | |
| 78 FixedTileLowBitsProc fTileLowBitsProcY; // chooseProcs | |
| 79 IntTileProc fIntTileProcY; // chooseProcs | |
| 80 SkFixed fFilterOneX; | |
| 81 SkFixed fFilterOneY; | |
| 82 | |
| 83 SkPMColor fPaintPMColor; // chooseProcs - A8 config | |
| 84 SkFixed fInvSx; // chooseProcs | |
| 85 SkFixed fInvKy; // chooseProcs | |
| 86 uint16_t fAlphaScale; // chooseProcs | |
| 87 uint8_t fInvType; // chooseProcs | |
| 88 uint8_t fTileModeX; // CONSTRUCTOR | |
| 89 uint8_t fTileModeY; // CONSTRUCTOR | |
| 90 uint8_t fFilterLevel; // chooseProcs | |
| 91 | |
| 92 /** The shader will let us know when we can release some of our resources | |
| 93 * like scaled bitmaps. | |
| 94 */ | |
| 95 | |
| 96 void endContext(); | |
| 97 | |
| 98 /** Platforms implement this, and can optionally overwrite only the | |
| 99 following fields: | |
| 100 | |
| 101 fShaderProc32 | |
| 102 fShaderProc16 | |
| 103 fMatrixProc | |
| 104 fSampleProc32 | |
| 105 fSampleProc32 | |
| 106 | |
| 107 They will already have valid function pointers, so a platform that does | |
| 108 not have an accelerated version can just leave that field as is. A valid | |
| 109 implementation can do nothing (see SkBitmapProcState_opts_none.cpp) | |
| 110 */ | |
| 111 void platformProcs(); | |
| 112 | |
| 113 /** Platforms can also optionally overwrite the convolution functions | |
| 114 if we have SIMD versions of them. | |
| 115 */ | |
| 116 | |
| 117 void platformConvolutionProcs(SkConvolutionProcs*); | |
| 118 | |
| 119 /** Given the byte size of the index buffer to be passed to the matrix proc, | |
| 120 return the maximum number of resulting pixels that can be computed | |
| 121 (i.e. the number of SkPMColor values to be written by the sample proc). | |
| 122 This routine takes into account that filtering and scale-vs-affine | |
| 123 affect the amount of buffer space needed. | |
| 124 | |
| 125 Only valid to call after chooseProcs (setContext) has been called. It is | |
| 126 safe to call this inside the shader's shadeSpan() method. | |
| 127 */ | |
| 128 int maxCountForBufferSize(size_t bufferSize) const; | |
| 129 | |
| 130 // If a shader proc is present, then the corresponding matrix/sample procs | |
| 131 // are ignored | |
| 132 ShaderProc32 getShaderProc32() const { return fShaderProc32; } | |
| 133 ShaderProc16 getShaderProc16() const { return fShaderProc16; } | |
| 134 | |
| 135 SkBitmapFilter* getBitmapFilter() const { return fBitmapFilter; } | |
| 136 | |
| 137 #ifdef SK_DEBUG | |
| 138 MatrixProc getMatrixProc() const; | |
| 139 #else | |
| 140 MatrixProc getMatrixProc() const { return fMatrixProc; } | |
| 141 #endif | |
| 142 SampleProc32 getSampleProc32() const { return fSampleProc32; } | |
| 143 SampleProc16 getSampleProc16() const { return fSampleProc16; } | |
| 144 | |
| 145 private: | |
| 146 friend class SkBitmapProcShader; | |
| 147 | |
| 148 ShaderProc32 fShaderProc32; // chooseProcs | |
| 149 ShaderProc16 fShaderProc16; // chooseProcs | |
| 150 // These are used if the shaderproc is NULL | |
| 151 MatrixProc fMatrixProc; // chooseProcs | |
| 152 SampleProc32 fSampleProc32; // chooseProcs | |
| 153 SampleProc16 fSampleProc16; // chooseProcs | |
| 154 | |
| 155 SkBitmap fOrigBitmap; // CONSTRUCTOR | |
| 156 SkBitmap fScaledBitmap; // chooseProcs | |
| 157 | |
| 158 SkScaledImageCache::ID* fScaledCacheID; | |
| 159 | |
| 160 MatrixProc chooseMatrixProc(bool trivial_matrix); | |
| 161 bool chooseProcs(const SkMatrix& inv, const SkPaint&); | |
| 162 ShaderProc32 chooseShaderProc32(); | |
| 163 | |
| 164 // returns false if we did not try to scale the image. In that case, we | |
| 165 // will need to "lock" its pixels some other way. | |
| 166 bool possiblyScaleImage(); | |
| 167 | |
| 168 // returns false if we failed to "lock" the pixels at all. Typically this | |
| 169 // means we have to abort the shader. | |
| 170 bool lockBaseBitmap(); | |
| 171 | |
| 172 SkBitmapFilter* fBitmapFilter; | |
| 173 | |
| 174 // If supported, sets fShaderProc32 and fShaderProc16 and returns true, | |
| 175 // otherwise returns false. | |
| 176 bool setBitmapFilterProcs(); | |
| 177 | |
| 178 // Return false if we failed to setup for fast translate (e.g. overflow) | |
| 179 bool setupForTranslate(); | |
| 180 | |
| 181 #ifdef SK_DEBUG | |
| 182 static void DebugMatrixProc(const SkBitmapProcState&, | |
| 183 uint32_t[], int count, int x, int y); | |
| 184 #endif | |
| 185 }; | |
| 186 | |
| 187 /* Macros for packing and unpacking pairs of 16bit values in a 32bit uint. | |
| 188 Used to allow access to a stream of uint16_t either one at a time, or | |
| 189 2 at a time by unpacking a uint32_t | |
| 190 */ | |
| 191 #ifdef SK_CPU_BENDIAN | |
| 192 #define PACK_TWO_SHORTS(pri, sec) ((pri) << 16 | (sec)) | |
| 193 #define UNPACK_PRIMARY_SHORT(packed) ((uint32_t)(packed) >> 16) | |
| 194 #define UNPACK_SECONDARY_SHORT(packed) ((packed) & 0xFFFF) | |
| 195 #else | |
| 196 #define PACK_TWO_SHORTS(pri, sec) ((pri) | ((sec) << 16)) | |
| 197 #define UNPACK_PRIMARY_SHORT(packed) ((packed) & 0xFFFF) | |
| 198 #define UNPACK_SECONDARY_SHORT(packed) ((uint32_t)(packed) >> 16) | |
| 199 #endif | |
| 200 | |
| 201 #ifdef SK_DEBUG | |
| 202 static inline uint32_t pack_two_shorts(U16CPU pri, U16CPU sec) { | |
| 203 SkASSERT((uint16_t)pri == pri); | |
| 204 SkASSERT((uint16_t)sec == sec); | |
| 205 return PACK_TWO_SHORTS(pri, sec); | |
| 206 } | |
| 207 #else | |
| 208 #define pack_two_shorts(pri, sec) PACK_TWO_SHORTS(pri, sec) | |
| 209 #endif | |
| 210 | |
| 211 // These functions are generated via macros, but are exposed here so that | |
| 212 // platformProcs may test for them by name. | |
| 213 void S32_opaque_D32_filter_DX(const SkBitmapProcState& s, const uint32_t xy[], | |
| 214 int count, SkPMColor colors[]); | |
| 215 void S32_alpha_D32_filter_DX(const SkBitmapProcState& s, const uint32_t xy[], | |
| 216 int count, SkPMColor colors[]); | |
| 217 void S32_opaque_D32_filter_DXDY(const SkBitmapProcState& s, | |
| 218 const uint32_t xy[], int count, SkPMColor colors[]); | |
| 219 void S32_alpha_D32_filter_DXDY(const SkBitmapProcState& s, | |
| 220 const uint32_t xy[], int count, SkPMColor colors[]); | |
| 221 void ClampX_ClampY_filter_scale(const SkBitmapProcState& s, uint32_t xy[], | |
| 222 int count, int x, int y); | |
| 223 void ClampX_ClampY_nofilter_scale(const SkBitmapProcState& s, uint32_t xy[], | |
| 224 int count, int x, int y); | |
| 225 void ClampX_ClampY_filter_affine(const SkBitmapProcState& s, | |
| 226 uint32_t xy[], int count, int x, int y); | |
| 227 void ClampX_ClampY_nofilter_affine(const SkBitmapProcState& s, | |
| 228 uint32_t xy[], int count, int x, int y); | |
| 229 void S32_D16_filter_DX(const SkBitmapProcState& s, | |
| 230 const uint32_t* xy, int count, uint16_t* colors); | |
| 231 | |
| 232 void highQualityFilter32(const SkBitmapProcState &s, int x, int y, | |
| 233 SkPMColor *SK_RESTRICT colors, int count); | |
| 234 void highQualityFilter16(const SkBitmapProcState &s, int x, int y, | |
| 235 uint16_t *SK_RESTRICT colors, int count); | |
| 236 | |
| 237 | |
| 238 #endif |
