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| 1 /* | 1 /* |
| 2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkTextureCompressor.h" | 8 #include "SkTextureCompressor.h" |
| 9 #include "SkTextureCompressor_ASTC.h" | 9 #include "SkTextureCompressor_ASTC.h" |
| 10 #include "SkTextureCompressor_LATC.h" | 10 #include "SkTextureCompressor_LATC.h" |
| 11 #include "SkTextureCompressor_R11EAC.h" | 11 #include "SkTextureCompressor_R11EAC.h" |
| 12 | 12 |
| 13 #include "SkBitmap.h" | 13 #include "SkBitmap.h" |
| 14 #include "SkData.h" | 14 #include "SkData.h" |
| 15 #include "SkEndian.h" | 15 #include "SkEndian.h" |
| 16 | 16 |
| 17 #include "SkTextureCompression_opts.h" | 17 #include "SkTextureCompression_opts.h" |
| 18 | 18 |
| 19 //////////////////////////////////////////////////////////////////////////////// | 19 //////////////////////////////////////////////////////////////////////////////// |
| 20 | 20 |
| 21 namespace SkTextureCompressor { | 21 namespace SkTextureCompressor { |
| 22 | 22 |
| 23 void GetBlockDimensions(Format format, int* dimX, int* dimY, bool matchSpec) { | 23 void GetBlockDimensions(Format format, int* dimX, int* dimY) { |
| 24 if (NULL == dimX || NULL == dimY) { | 24 if (NULL == dimX || NULL == dimY) { |
| 25 return; | 25 return; |
| 26 } | 26 } |
| 27 | 27 |
| 28 if (!matchSpec && SkTextureCompressorGetPlatformDims(format, dimX, dimY)) { | 28 if (SkTextureCompressorGetPlatformDims(format, dimX, dimY)) { |
| 29 return; | 29 return; |
| 30 } | 30 } |
| 31 | 31 |
| 32 // No specialized arguments, return the dimensions as they are in the spec. | |
| 33 switch(format) { | 32 switch(format) { |
| 34 // These formats are 64 bits per 4x4 block. | 33 // These formats are 64 bits per 4x4 block. |
| 35 default: | 34 default: |
| 36 SkDEBUGFAIL("Unknown compression format!"); | 35 SkDEBUGFAIL("Unknown compression format!"); |
| 37 // fall through | 36 // fall through |
| 38 case kR11_EAC_Format: | 37 case kR11_EAC_Format: |
| 39 case kLATC_Format: | 38 case kLATC_Format: |
| 40 *dimX = 4; | 39 *dimX = 4; |
| 41 *dimY = 4; | 40 *dimY = 4; |
| 42 break; | 41 break; |
| (...skipping 110 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 153 case kASTC_12x12_Format: | 152 case kASTC_12x12_Format: |
| 154 return CreateASTCBlitter(width, height, compressedBuffer); | 153 return CreateASTCBlitter(width, height, compressedBuffer); |
| 155 | 154 |
| 156 default: | 155 default: |
| 157 return NULL; | 156 return NULL; |
| 158 } | 157 } |
| 159 | 158 |
| 160 return NULL; | 159 return NULL; |
| 161 } | 160 } |
| 162 | 161 |
| 163 bool DecompressBufferFromFormat(uint8_t* dst, int dstRowBytes, const uint8_t* sr
c, | |
| 164 int width, int height, Format format) { | |
| 165 int dimX, dimY; | |
| 166 GetBlockDimensions(format, &dimX, &dimY, true); | |
| 167 | |
| 168 if (width < 0 || ((width % dimX) != 0) || height < 0 || ((height % dimY) !=
0)) { | |
| 169 return false; | |
| 170 } | |
| 171 | |
| 172 switch(format) { | |
| 173 case kLATC_Format: | |
| 174 DecompressLATC(dst, dstRowBytes, src, width, height); | |
| 175 return true; | |
| 176 | |
| 177 case kR11_EAC_Format: | |
| 178 DecompressR11EAC(dst, dstRowBytes, src, width, height); | |
| 179 return true; | |
| 180 | |
| 181 case kASTC_12x12_Format: | |
| 182 // TODO(krajcevski) .. right now just fall through and return false. | |
| 183 return false; | |
| 184 } | |
| 185 | |
| 186 return false; | |
| 187 } | |
| 188 | |
| 189 } // namespace SkTextureCompressor | 162 } // namespace SkTextureCompressor |
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