The Tor Browser / file comparison
comparison: gfx/thebes/gfxAlphaRecovery.cpp
gfx/thebes/gfxAlphaRecovery.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:cca1ea44bbfd |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "gfxAlphaRecovery.h" | |
| 7 | |
| 8 #include "gfxImageSurface.h" | |
| 9 | |
| 10 #define MOZILLA_SSE_INCLUDE_HEADER_FOR_SSE2 | |
| 11 #include "mozilla/SSE.h" | |
| 12 | |
| 13 /* static */ bool | |
| 14 gfxAlphaRecovery::RecoverAlpha(gfxImageSurface* blackSurf, | |
| 15 const gfxImageSurface* whiteSurf) | |
| 16 { | |
| 17 gfxIntSize size = blackSurf->GetSize(); | |
| 18 | |
| 19 if (size != whiteSurf->GetSize() || | |
| 20 (blackSurf->Format() != gfxImageFormat::ARGB32 && | |
| 21 blackSurf->Format() != gfxImageFormat::RGB24) || | |
| 22 (whiteSurf->Format() != gfxImageFormat::ARGB32 && | |
| 23 whiteSurf->Format() != gfxImageFormat::RGB24)) | |
| 24 return false; | |
| 25 | |
| 26 #ifdef MOZILLA_MAY_SUPPORT_SSE2 | |
| 27 if (mozilla::supports_sse2() && | |
| 28 RecoverAlphaSSE2(blackSurf, whiteSurf)) { | |
| 29 return true; | |
| 30 } | |
| 31 #endif | |
| 32 | |
| 33 blackSurf->Flush(); | |
| 34 whiteSurf->Flush(); | |
| 35 | |
| 36 unsigned char* blackData = blackSurf->Data(); | |
| 37 unsigned char* whiteData = whiteSurf->Data(); | |
| 38 | |
| 39 for (int32_t i = 0; i < size.height; ++i) { | |
| 40 uint32_t* blackPixel = reinterpret_cast<uint32_t*>(blackData); | |
| 41 const uint32_t* whitePixel = reinterpret_cast<uint32_t*>(whiteData); | |
| 42 for (int32_t j = 0; j < size.width; ++j) { | |
| 43 uint32_t recovered = RecoverPixel(blackPixel[j], whitePixel[j]); | |
| 44 blackPixel[j] = recovered; | |
| 45 } | |
| 46 blackData += blackSurf->Stride(); | |
| 47 whiteData += whiteSurf->Stride(); | |
| 48 } | |
| 49 | |
| 50 blackSurf->MarkDirty(); | |
| 51 | |
| 52 return true; | |
| 53 } |
