gecko/gfx/2d/SourceSurfaceD2D1.cpp

164 lines
3.9 KiB
C++

/* -*- 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 "SourceSurfaceD2D1.h"
#include "DrawTargetD2D1.h"
#include "Tools.h"
namespace mozilla {
namespace gfx {
SourceSurfaceD2D1::SourceSurfaceD2D1(ID2D1Image *aImage, ID2D1DeviceContext *aDC,
SurfaceFormat aFormat, const IntSize &aSize,
DrawTargetD2D1 *aDT)
: mImage(aImage)
, mDC(aDC)
, mDrawTarget(aDT)
{
aImage->QueryInterface((ID2D1Bitmap1**)byRef(mRealizedBitmap));
mFormat = aFormat;
mSize = aSize;
}
SourceSurfaceD2D1::~SourceSurfaceD2D1()
{
}
TemporaryRef<DataSourceSurface>
SourceSurfaceD2D1::GetDataSurface()
{
EnsureRealizedBitmap();
RefPtr<ID2D1Bitmap1> softwareBitmap;
D2D1_BITMAP_PROPERTIES1 props;
props.dpiX = 96;
props.dpiY = 96;
props.pixelFormat = D2DPixelFormat(mFormat);
props.colorContext = nullptr;
props.bitmapOptions = D2D1_BITMAP_OPTIONS_CANNOT_DRAW |
D2D1_BITMAP_OPTIONS_CPU_READ;
mDC->CreateBitmap(D2DIntSize(mSize), nullptr, 0, props, (ID2D1Bitmap1**)byRef(softwareBitmap));
D2D1_POINT_2U point = D2D1::Point2U(0, 0);
D2D1_RECT_U rect = D2D1::RectU(0, 0, mSize.width, mSize.height);
softwareBitmap->CopyFromBitmap(&point, mRealizedBitmap, &rect);
return new DataSourceSurfaceD2D1(softwareBitmap, mFormat);
}
void
SourceSurfaceD2D1::EnsureRealizedBitmap()
{
if (mRealizedBitmap) {
return;
}
RefPtr<ID2D1DeviceContext> dc;
Factory::GetD2D1Device()->CreateDeviceContext(D2D1_DEVICE_CONTEXT_OPTIONS_NONE, byRef(dc));
D2D1_BITMAP_PROPERTIES1 props;
props.dpiX = 96;
props.dpiY = 96;
props.pixelFormat = D2DPixelFormat(mFormat);
props.colorContext = nullptr;
props.bitmapOptions = D2D1_BITMAP_OPTIONS_TARGET;
dc->CreateBitmap(D2DIntSize(mSize), nullptr, 0, props, (ID2D1Bitmap1**)byRef(mRealizedBitmap));
dc->SetTarget(mRealizedBitmap);
dc->BeginDraw();
dc->DrawImage(mImage);
dc->EndDraw();
}
void
SourceSurfaceD2D1::DrawTargetWillChange()
{
// At this point in time this should always be true here.
MOZ_ASSERT(mRealizedBitmap);
RefPtr<ID2D1Bitmap1> oldBitmap = mRealizedBitmap;
D2D1_BITMAP_PROPERTIES1 props;
props.dpiX = 96;
props.dpiY = 96;
props.pixelFormat = D2DPixelFormat(mFormat);
props.colorContext = nullptr;
props.bitmapOptions = D2D1_BITMAP_OPTIONS_TARGET;
mDC->CreateBitmap(D2DIntSize(mSize), nullptr, 0, props, (ID2D1Bitmap1**)byRef(mRealizedBitmap));
D2D1_POINT_2U point = D2D1::Point2U(0, 0);
D2D1_RECT_U rect = D2D1::RectU(0, 0, mSize.width, mSize.height);
mRealizedBitmap->CopyFromBitmap(&point, oldBitmap, &rect);
mImage = mRealizedBitmap;
DrawTargetD2D1::mVRAMUsageSS += mSize.width * mSize.height * BytesPerPixel(mFormat);
mDrawTarget = nullptr;
// We now no longer depend on the source surface content remaining the same.
MarkIndependent();
}
void
SourceSurfaceD2D1::MarkIndependent()
{
if (mDrawTarget) {
MOZ_ASSERT(mDrawTarget->mSnapshot == this);
mDrawTarget->mSnapshot = nullptr;
mDrawTarget = nullptr;
}
}
DataSourceSurfaceD2D1::DataSourceSurfaceD2D1(ID2D1Bitmap1 *aMappableBitmap, SurfaceFormat aFormat)
: mBitmap(aMappableBitmap)
, mFormat(aFormat)
, mMapped(false)
{
}
DataSourceSurfaceD2D1::~DataSourceSurfaceD2D1()
{
if (mMapped) {
mBitmap->Unmap();
}
}
IntSize
DataSourceSurfaceD2D1::GetSize() const
{
D2D1_SIZE_F size = mBitmap->GetSize();
return IntSize(int32_t(size.width), int32_t(size.height));
}
uint8_t*
DataSourceSurfaceD2D1::GetData()
{
EnsureMapped();
return mMap.bits;
}
int32_t
DataSourceSurfaceD2D1::Stride()
{
EnsureMapped();
return mMap.pitch;
}
void
DataSourceSurfaceD2D1::EnsureMapped()
{
if (mMapped) {
return;
}
mBitmap->Map(D2D1_MAP_OPTIONS_READ, &mMap);
mMapped = true;
}
}
}