The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/core/SkAlphaRuns.cpp
gfx/skia/trunk/src/core/SkAlphaRuns.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:a9fc6b0f15ef |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2006 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 #include "SkAntiRun.h" | |
| 11 #include "SkUtils.h" | |
| 12 | |
| 13 void SkAlphaRuns::reset(int width) { | |
| 14 SkASSERT(width > 0); | |
| 15 | |
| 16 #ifdef SK_DEBUG | |
| 17 sk_memset16((uint16_t*)fRuns, (uint16_t)(-42), width); | |
| 18 #endif | |
| 19 fRuns[0] = SkToS16(width); | |
| 20 fRuns[width] = 0; | |
| 21 fAlpha[0] = 0; | |
| 22 | |
| 23 SkDEBUGCODE(fWidth = width;) | |
| 24 SkDEBUGCODE(this->validate();) | |
| 25 } | |
| 26 | |
| 27 #ifdef SK_DEBUG | |
| 28 void SkAlphaRuns::assertValid(int y, int maxStep) const { | |
| 29 int max = (y + 1) * maxStep - (y == maxStep - 1); | |
| 30 | |
| 31 const int16_t* runs = fRuns; | |
| 32 const uint8_t* alpha = fAlpha; | |
| 33 | |
| 34 while (*runs) { | |
| 35 SkASSERT(*alpha <= max); | |
| 36 alpha += *runs; | |
| 37 runs += *runs; | |
| 38 } | |
| 39 } | |
| 40 | |
| 41 void SkAlphaRuns::dump() const { | |
| 42 const int16_t* runs = fRuns; | |
| 43 const uint8_t* alpha = fAlpha; | |
| 44 | |
| 45 SkDebugf("Runs"); | |
| 46 while (*runs) { | |
| 47 int n = *runs; | |
| 48 | |
| 49 SkDebugf(" %02x", *alpha); | |
| 50 if (n > 1) { | |
| 51 SkDebugf(",%d", n); | |
| 52 } | |
| 53 alpha += n; | |
| 54 runs += n; | |
| 55 } | |
| 56 SkDebugf("\n"); | |
| 57 } | |
| 58 | |
| 59 void SkAlphaRuns::validate() const { | |
| 60 SkASSERT(fWidth > 0); | |
| 61 | |
| 62 int count = 0; | |
| 63 const int16_t* runs = fRuns; | |
| 64 | |
| 65 while (*runs) { | |
| 66 SkASSERT(*runs > 0); | |
| 67 count += *runs; | |
| 68 SkASSERT(count <= fWidth); | |
| 69 runs += *runs; | |
| 70 } | |
| 71 SkASSERT(count == fWidth); | |
| 72 } | |
| 73 #endif |
