DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (31ec81b5d7bb)

VCS Links

Line Code
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 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163
/* -*- 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;
}

}
}