Exemplos de ConvertBGRXToBGRA em C++ (Cpp)

Exemplo n.º 1

Arquivo: SourceSurfaceSkia.cpp Projeto: Geek-in-Training/mozilla-central

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;
}

Exemplo n.º 2

Arquivo: DataSurfaceHelpers.cpp Projeto: ednapiranha/gecko-dev

uint8_t*
SurfaceToPackedBGRA(DataSourceSurface *aSurface)
{
  SurfaceFormat format = aSurface->GetFormat();
  if (format != SurfaceFormat::B8G8R8A8 && format != SurfaceFormat::B8G8R8X8) {
    return nullptr;
  }

  IntSize size = aSurface->GetSize();

  uint8_t* imageBuffer = new (std::nothrow) uint8_t[size.width * size.height * sizeof(uint32_t)];
  if (!imageBuffer) {
    return nullptr;
  }

  DataSourceSurface::MappedSurface map;
  if (!aSurface->Map(DataSourceSurface::MapType::READ, &map)) {
    delete [] imageBuffer;
    return nullptr;
  }

  CopySurfaceDataToPackedArray(map.mData, imageBuffer, size,
                               map.mStride, 4 * sizeof(uint8_t));

  aSurface->Unmap();

  if (format == SurfaceFormat::B8G8R8X8) {
    // Convert BGRX to BGRA by setting a to 255.
    ConvertBGRXToBGRA(reinterpret_cast<uint8_t *>(imageBuffer), size, size.width * sizeof(uint32_t));
  }

  return imageBuffer;
}

Exemplo n.º 3

Arquivo: DrawTargetSkia.cpp Projeto: cbrem/gecko-dev

void
DrawTargetSkia::Init(unsigned char* aData, const IntSize &aSize, int32_t aStride, SurfaceFormat aFormat)
{
  SkAlphaType alphaType = kPremul_SkAlphaType;
  if (aFormat == SurfaceFormat::B8G8R8X8) {
    // We have to manually set the A channel to be 255 as Skia doesn't understand BGRX
    ConvertBGRXToBGRA(aData, aSize, aStride);
    alphaType = kOpaque_SkAlphaType;
  }

  SkBitmap bitmap;
  bitmap.setConfig(GfxFormatToSkiaConfig(aFormat), aSize.width, aSize.height, aStride, alphaType);
  bitmap.setPixels(aData);
  SkAutoTUnref<SkCanvas> canvas(new SkCanvas(new SkBitmapDevice(bitmap)));

  mSize = aSize;
  mCanvas = canvas.get();
  mFormat = aFormat;
}

Exemplo n.º 4

Arquivo: DrawTargetSkia.cpp Projeto: sergecodd/FireFox-OS

void
DrawTargetSkia::Init(unsigned char* aData, const IntSize &aSize, int32_t aStride, SurfaceFormat aFormat)
{
    if (aFormat == FORMAT_B8G8R8X8) {
        // We have to manually set the A channel to be 255 as Skia doesn't understand BGRX
        ConvertBGRXToBGRA(aData, aSize, aStride);
        mBitmap.setIsOpaque(true);
    }

    mBitmap.setConfig(GfxFormatToSkiaConfig(aFormat), aSize.width, aSize.height, aStride);
    mBitmap.setPixels(aData);

    SkAutoTUnref<SkDevice> device(new SkDevice(mBitmap));
    SkAutoTUnref<SkCanvas> canvas(new SkCanvas(device.get()));
    mSize = aSize;

    mDevice = device.get();
    mCanvas = canvas.get();
    mFormat = aFormat;
}