The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/utils/SkBitmapHasher.h
gfx/skia/trunk/src/utils/SkBitmapHasher.h
- branch
- TOR_BUG_9701
- changeset 9
- a63d609f5ebe
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| -1:000000000000 | 0:68e7be17ac24 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2012 Google Inc. | |
| 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 #ifndef SkBitmapHasher_DEFINED | |
| 10 #define SkBitmapHasher_DEFINED | |
| 11 | |
| 12 #include "SkBitmap.h" | |
| 13 | |
| 14 /** | |
| 15 * Static class that generates a uint64 hash digest from an SkBitmap. | |
| 16 */ | |
| 17 class SkBitmapHasher { | |
| 18 public: | |
| 19 /** | |
| 20 * Fills in "result" with a hash of the pixels in this bitmap. | |
| 21 * | |
| 22 * If this is unable to compute the hash for some reason, | |
| 23 * it returns false. | |
| 24 * | |
| 25 * Note: depending on the bitmap config, we may need to create an | |
| 26 * intermediate SkBitmap and copy the pixels over to it... so in some | |
| 27 * cases, performance and memory usage can suffer. | |
| 28 */ | |
| 29 static bool ComputeDigest(const SkBitmap& bitmap, uint64_t *result); | |
| 30 | |
| 31 private: | |
| 32 static bool ComputeDigestInternal(const SkBitmap& bitmap, uint64_t *result); | |
| 33 }; | |
| 34 | |
| 35 #endif |
