/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "gfxAlphaRecovery.h" #include "gfxImageSurface.h" #define MOZILLA_SSE_INCLUDE_HEADER_FOR_SSE2 #include "mozilla/SSE.h" /* static */ bool gfxAlphaRecovery::RecoverAlpha(gfxImageSurface* blackSurf, const gfxImageSurface* whiteSurf) { mozilla::gfx::IntSize size = blackSurf->GetSize(); if (size != whiteSurf->GetSize() || (blackSurf->Format() != mozilla::gfx::SurfaceFormat::A8R8G8B8_UINT32 && blackSurf->Format() != mozilla::gfx::SurfaceFormat::X8R8G8B8_UINT32) || (whiteSurf->Format() != mozilla::gfx::SurfaceFormat::A8R8G8B8_UINT32 && whiteSurf->Format() != mozilla::gfx::SurfaceFormat::X8R8G8B8_UINT32)) return false; #ifdef MOZILLA_MAY_SUPPORT_SSE2 if (mozilla::supports_sse2() && RecoverAlphaSSE2(blackSurf, whiteSurf)) { return true; } #endif blackSurf->Flush(); whiteSurf->Flush(); unsigned char* blackData = blackSurf->Data(); unsigned char* whiteData = whiteSurf->Data(); for (int32_t i = 0; i < size.height; ++i) { uint32_t* blackPixel = reinterpret_cast<uint32_t*>(blackData); const uint32_t* whitePixel = reinterpret_cast<uint32_t*>(whiteData); for (int32_t j = 0; j < size.width; ++j) { uint32_t recovered = RecoverPixel(blackPixel[j], whitePixel[j]); blackPixel[j] = recovered; } blackData += blackSurf->Stride(); whiteData += whiteSurf->Stride(); } blackSurf->MarkDirty(); return true; }