blob: de36b84b22d6a50254169aafa463eae0bee65729 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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"
#include <xsimd/xsimd.hpp>
/* 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() &&
RecoverAlphaGeneric<xsimd::sse2>(blackSurf, whiteSurf)) {
return true;
}
#endif
#ifdef MOZILLA_MAY_SUPPORT_NEON
if (mozilla::supports_neon() &&
RecoverAlphaGeneric<xsimd::neon>(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;
}
|
