bool SkImageEncoder_WIC::onEncode(SkWStream* stream
, const SkBitmap& bm
, int quality)
{
GUID type;
switch (fType) {
case kJPEG_Type:
type = GUID_ContainerFormatJpeg;
break;
case kPNG_Type:
type = GUID_ContainerFormatPng;
break;
default:
return false;
}
//Initialize COM.
AutoCoInitialize scopedCo;
HRESULT hr = scopedCo.getHR();
//Create Windows Imaging Component ImagingFactory.
SkTScopedComPtr<IWICImagingFactory> piImagingFactory;
if (SUCCEEDED(hr)) {
hr = CoCreateInstance(
CLSID_WICImagingFactory
, NULL
, CLSCTX_INPROC_SERVER
, IID_PPV_ARGS(&piImagingFactory)
);
}
//Convert the SkWStream to an IStream.
SkTScopedComPtr<IStream> piStream;
if (SUCCEEDED(hr)) {
hr = SkWIStream::CreateFromSkWStream(stream, &piStream);
}
//Create an encode of the appropriate type.
SkTScopedComPtr<IWICBitmapEncoder> piEncoder;
if (SUCCEEDED(hr)) {
hr = piImagingFactory->CreateEncoder(type, NULL, &piEncoder);
}
if (SUCCEEDED(hr)) {
hr = piEncoder->Initialize(piStream.get(), WICBitmapEncoderNoCache);
}
//Create a the frame.
SkTScopedComPtr<IWICBitmapFrameEncode> piBitmapFrameEncode;
SkTScopedComPtr<IPropertyBag2> piPropertybag;
if (SUCCEEDED(hr)) {
hr = piEncoder->CreateNewFrame(&piBitmapFrameEncode, &piPropertybag);
}
if (SUCCEEDED(hr)) {
PROPBAG2 name = { 0 };
name.dwType = PROPBAG2_TYPE_DATA;
name.vt = VT_R4;
name.pstrName = L"ImageQuality";
VARIANT value;
VariantInit(&value);
value.vt = VT_R4;
value.fltVal = (FLOAT)(quality / 100.0);
//Ignore result code.
// This returns E_FAIL if the named property is not in the bag.
//TODO(bungeman) enumerate the properties,
// write and set hr iff property exists.
piPropertybag->Write(1, &name, &value);
}
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->Initialize(piPropertybag.get());
}
//Set the size of the frame.
const UINT width = bm.width();
const UINT height = bm.height();
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->SetSize(width, height);
}
//Set the pixel format of the frame.
const WICPixelFormatGUID formatDesired = GUID_WICPixelFormat32bppBGRA;
WICPixelFormatGUID formatGUID = formatDesired;
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->SetPixelFormat(&formatGUID);
}
if (SUCCEEDED(hr)) {
//Be sure the image format is the one requested.
hr = IsEqualGUID(formatGUID, formatDesired) ? S_OK : E_FAIL;
}
//Write the pixels into the frame.
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->WritePixels(
height
, bm.rowBytes()
, bm.rowBytes()*height
, reinterpret_cast<BYTE*>(bm.getPixels()));
}
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->Commit();
}
if (SUCCEEDED(hr)) {
hr = piEncoder->Commit();
}
return SUCCEEDED(hr);
}
bool SkImageEncoder_WIC::onEncode(SkWStream* stream
, const SkBitmap& bitmapOrig
, int quality)
{
GUID type;
switch (fType) {
case kBMP_Type:
type = GUID_ContainerFormatBmp;
break;
case kICO_Type:
type = GUID_ContainerFormatIco;
break;
case kJPEG_Type:
type = GUID_ContainerFormatJpeg;
break;
case kPNG_Type:
type = GUID_ContainerFormatPng;
break;
default:
return false;
}
//Convert to 8888 if needed.
const SkBitmap* bitmap;
SkBitmap bitmapCopy;
if (kN32_SkColorType == bitmapOrig.colorType() && bitmapOrig.isOpaque()) {
bitmap = &bitmapOrig;
} else {
if (!bitmapOrig.copyTo(&bitmapCopy, kN32_SkColorType)) {
return false;
}
bitmap = &bitmapCopy;
}
// We cannot use PBGRA so we need to unpremultiply ourselves
if (!bitmap->isOpaque()) {
SkAutoLockPixels alp(*bitmap);
uint8_t* pixels = reinterpret_cast<uint8_t*>(bitmap->getPixels());
for (int y = 0; y < bitmap->height(); ++y) {
for (int x = 0; x < bitmap->width(); ++x) {
uint8_t* bytes = pixels + y * bitmap->rowBytes() + x * bitmap->bytesPerPixel();
SkPMColor* src = reinterpret_cast<SkPMColor*>(bytes);
SkColor* dst = reinterpret_cast<SkColor*>(bytes);
*dst = SkUnPreMultiply::PMColorToColor(*src);
}
}
}
//Initialize COM.
SkAutoCoInitialize scopedCo;
if (!scopedCo.succeeded()) {
return false;
}
HRESULT hr = S_OK;
//Create Windows Imaging Component ImagingFactory.
SkTScopedComPtr<IWICImagingFactory> piImagingFactory;
if (SUCCEEDED(hr)) {
hr = CoCreateInstance(
CLSID_WICImagingFactory
, nullptr
, CLSCTX_INPROC_SERVER
, IID_PPV_ARGS(&piImagingFactory)
);
}
//Convert the SkWStream to an IStream.
SkTScopedComPtr<IStream> piStream;
if (SUCCEEDED(hr)) {
hr = SkWIStream::CreateFromSkWStream(stream, &piStream);
}
//Create an encode of the appropriate type.
SkTScopedComPtr<IWICBitmapEncoder> piEncoder;
if (SUCCEEDED(hr)) {
hr = piImagingFactory->CreateEncoder(type, nullptr, &piEncoder);
}
if (SUCCEEDED(hr)) {
hr = piEncoder->Initialize(piStream.get(), WICBitmapEncoderNoCache);
}
//Create a the frame.
SkTScopedComPtr<IWICBitmapFrameEncode> piBitmapFrameEncode;
SkTScopedComPtr<IPropertyBag2> piPropertybag;
if (SUCCEEDED(hr)) {
hr = piEncoder->CreateNewFrame(&piBitmapFrameEncode, &piPropertybag);
}
if (SUCCEEDED(hr)) {
PROPBAG2 name = { 0 };
name.dwType = PROPBAG2_TYPE_DATA;
name.vt = VT_R4;
name.pstrName = L"ImageQuality";
VARIANT value;
VariantInit(&value);
value.vt = VT_R4;
value.fltVal = (FLOAT)(quality / 100.0);
//Ignore result code.
// This returns E_FAIL if the named property is not in the bag.
//TODO(bungeman) enumerate the properties,
// write and set hr iff property exists.
piPropertybag->Write(1, &name, &value);
}
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->Initialize(piPropertybag.get());
}
//Set the size of the frame.
const UINT width = bitmap->width();
const UINT height = bitmap->height();
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->SetSize(width, height);
}
//Set the pixel format of the frame.
const WICPixelFormatGUID formatDesired = GUID_WICPixelFormat32bppBGRA;
WICPixelFormatGUID formatGUID = formatDesired;
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->SetPixelFormat(&formatGUID);
}
if (SUCCEEDED(hr)) {
//Be sure the image format is the one requested.
hr = IsEqualGUID(formatGUID, formatDesired) ? S_OK : E_FAIL;
}
//Write the pixels into the frame.
if (SUCCEEDED(hr)) {
SkAutoLockPixels alp(*bitmap);
const UINT stride = (UINT) bitmap->rowBytes();
hr = piBitmapFrameEncode->WritePixels(
height
, stride
, stride * height
, reinterpret_cast<BYTE*>(bitmap->getPixels()));
}
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->Commit();
}
if (SUCCEEDED(hr)) {
hr = piEncoder->Commit();
}
return SUCCEEDED(hr);
}
