bool
ShadowImageLayerOGL::Init(const SharedImage& aFront)
{
if (aFront.type() == SharedImage::TSurfaceDescriptor) {
SurfaceDescriptor desc = aFront.get_SurfaceDescriptor();
nsRefPtr<gfxASurface> surf =
ShadowLayerForwarder::OpenDescriptor(desc);
mSize = surf->GetSize();
mTexImage = gl()->CreateTextureImage(nsIntSize(mSize.width, mSize.height),
surf->GetContentType(),
LOCAL_GL_CLAMP_TO_EDGE,
mForceSingleTile
? TextureImage::ForceSingleTile
: TextureImage::NoFlags);
return true;
} else {
YUVImage yuv = aFront.get_YUVImage();
nsRefPtr<gfxSharedImageSurface> surfY =
gfxSharedImageSurface::Open(yuv.Ydata());
nsRefPtr<gfxSharedImageSurface> surfU =
gfxSharedImageSurface::Open(yuv.Udata());
nsRefPtr<gfxSharedImageSurface> surfV =
gfxSharedImageSurface::Open(yuv.Vdata());
mSize = surfY->GetSize();
mCbCrSize = surfU->GetSize();
if (!mYUVTexture[0].IsAllocated()) {
mYUVTexture[0].Allocate(gl());
mYUVTexture[1].Allocate(gl());
mYUVTexture[2].Allocate(gl());
}
NS_ASSERTION(mYUVTexture[0].IsAllocated() &&
mYUVTexture[1].IsAllocated() &&
mYUVTexture[2].IsAllocated(),
"Texture allocation failed!");
gl()->MakeCurrent();
SetClamping(gl(), mYUVTexture[0].GetTextureID());
SetClamping(gl(), mYUVTexture[1].GetTextureID());
SetClamping(gl(), mYUVTexture[2].GetTextureID());
return true;
}
return false;
}
void ShadowImageLayerOGL::UploadSharedYUVToTexture(const YUVImage& yuv)
{
AutoOpenSurface asurfY(OPEN_READ_ONLY, yuv.Ydata());
AutoOpenSurface asurfU(OPEN_READ_ONLY, yuv.Udata());
AutoOpenSurface asurfV(OPEN_READ_ONLY, yuv.Vdata());
nsRefPtr<gfxImageSurface> surfY = asurfY.GetAsImage();
nsRefPtr<gfxImageSurface> surfU = asurfU.GetAsImage();
nsRefPtr<gfxImageSurface> surfV = asurfV.GetAsImage();
mPictureRect = yuv.picture();
gfxIntSize size = surfY->GetSize();
gfxIntSize CbCrSize = surfU->GetSize();
if (size != mSize || mCbCrSize != CbCrSize || !mYUVTexture[0].IsAllocated()) {
mSize = surfY->GetSize();
mCbCrSize = surfU->GetSize();
if (!mYUVTexture[0].IsAllocated()) {
mYUVTexture[0].Allocate(gl());
mYUVTexture[1].Allocate(gl());
mYUVTexture[2].Allocate(gl());
}
NS_ASSERTION(mYUVTexture[0].IsAllocated() &&
mYUVTexture[1].IsAllocated() &&
mYUVTexture[2].IsAllocated(),
"Texture allocation failed!");
gl()->MakeCurrent();
SetClamping(gl(), mYUVTexture[0].GetTextureID());
SetClamping(gl(), mYUVTexture[1].GetTextureID());
SetClamping(gl(), mYUVTexture[2].GetTextureID());
}
PlanarYCbCrImage::Data data;
data.mYChannel = surfY->Data();
data.mYStride = surfY->Stride();
data.mYSize = surfY->GetSize();
data.mCbChannel = surfU->Data();
data.mCrChannel = surfV->Data();
data.mCbCrStride = surfU->Stride();
data.mCbCrSize = surfU->GetSize();
UploadYUVToTexture(gl(), data, &mYUVTexture[0], &mYUVTexture[1], &mYUVTexture[2]);
}
