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/* -*- 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 "Logging.h"
#include "SourceSurfaceSkia.h"
#include "skia/SkBitmap.h"
#include "skia/SkDevice.h"
#include "HelpersSkia.h"
#include "DrawTargetSkia.h"
namespace mozilla {
namespace gfx {
SourceSurfaceSkia::SourceSurfaceSkia()
: mDrawTarget(nullptr), mLocked(false)
{
}
SourceSurfaceSkia::~SourceSurfaceSkia()
{
MaybeUnlock();
MarkIndependent();
}
IntSize
SourceSurfaceSkia::GetSize() const
{
return mSize;
}
SurfaceFormat
SourceSurfaceSkia::GetFormat() const
{
return mFormat;
}
bool
SourceSurfaceSkia::InitFromCanvas(SkCanvas* aCanvas,
SurfaceFormat aFormat,
DrawTargetSkia* aOwner)
{
SkISize size = aCanvas->getDeviceSize();
mBitmap = (SkBitmap)aCanvas->getDevice()->accessBitmap(false);
mFormat = aFormat;
mSize = IntSize(size.fWidth, size.fHeight);
mStride = mBitmap.rowBytes();
mDrawTarget = aOwner;
return true;
}
bool
SourceSurfaceSkia::InitFromData(unsigned char* aData,
const IntSize &aSize,
int32_t aStride,
SurfaceFormat aFormat)
{
SkBitmap temp;
temp.setConfig(GfxFormatToSkiaConfig(aFormat), aSize.width, aSize.height, aStride);
temp.setPixels(aData);
if (!temp.copyTo(&mBitmap, GfxFormatToSkiaConfig(aFormat))) {
return false;
}
if (aFormat == FORMAT_B8G8R8X8) {
mBitmap.lockPixels();
// We have to manually set the A channel to be 255 as Skia doesn't understand BGRX
ConvertBGRXToBGRA(reinterpret_cast<unsigned char*>(mBitmap.getPixels()), aSize, aStride);
mBitmap.unlockPixels();
mBitmap.notifyPixelsChanged();
mBitmap.setIsOpaque(true);
}
mSize = aSize;
mFormat = aFormat;
mStride = aStride;
return true;
}
unsigned char*
SourceSurfaceSkia::GetData()
{
if (!mLocked) {
mBitmap.lockPixels();
mLocked = true;
}
unsigned char *pixels = (unsigned char *)mBitmap.getPixels();
return pixels;
}
void
SourceSurfaceSkia::DrawTargetWillChange()
{
if (mDrawTarget) {
MaybeUnlock();
mDrawTarget = nullptr;
SkBitmap temp = mBitmap;
mBitmap.reset();
temp.copyTo(&mBitmap, temp.getConfig());
}
}
void
SourceSurfaceSkia::DrawTargetDestroyed()
{
mDrawTarget = nullptr;
}
void
SourceSurfaceSkia::MarkIndependent()
{
if (mDrawTarget) {
mDrawTarget->RemoveSnapshot(this);
mDrawTarget = nullptr;
}
}
void
SourceSurfaceSkia::MaybeUnlock()
{
if (mLocked) {
mBitmap.unlockPixels();
mLocked = false;
}
}
}
}
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