2016-03-17 20:50:17 +00:00
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/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkImageGeneratorWIC.h"
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#include "SkIStream.h"
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#include "SkStream.h"
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// All Windows SDKs back to XPSP2 export the CLSID_WICImagingFactory symbol.
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// In the Windows8 SDK the CLSID_WICImagingFactory symbol is still exported
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// but CLSID_WICImagingFactory is then #defined to CLSID_WICImagingFactory2.
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// Undo this #define if it has been done so that we link against the symbols
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// we intended to link against on all SDKs.
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#if defined(CLSID_WICImagingFactory)
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#undef CLSID_WICImagingFactory
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#endif
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SkImageGenerator* SkImageGeneratorWIC::NewFromEncodedWIC(SkData* data) {
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// Create Windows Imaging Component ImagingFactory.
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SkTScopedComPtr<IWICImagingFactory> imagingFactory;
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HRESULT hr = CoCreateInstance(CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER,
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IID_PPV_ARGS(&imagingFactory));
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if (FAILED(hr)) {
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return nullptr;
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}
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// Create an IStream.
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SkTScopedComPtr<IStream> iStream;
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// Note that iStream will take ownership of the new memory stream because
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// we set |deleteOnRelease| to true.
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2016-09-12 19:01:44 +00:00
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hr = SkIStream::CreateFromSkStream(new SkMemoryStream(sk_ref_sp(data)), true, &iStream);
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2016-03-17 20:50:17 +00:00
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if (FAILED(hr)) {
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return nullptr;
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}
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// Create the decoder from the stream.
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SkTScopedComPtr<IWICBitmapDecoder> decoder;
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hr = imagingFactory->CreateDecoderFromStream(iStream.get(), nullptr,
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WICDecodeMetadataCacheOnDemand, &decoder);
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if (FAILED(hr)) {
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return nullptr;
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}
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// Select the first frame from the decoder.
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SkTScopedComPtr<IWICBitmapFrameDecode> imageFrame;
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hr = decoder->GetFrame(0, &imageFrame);
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if (FAILED(hr)) {
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return nullptr;
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}
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// Treat the frame as an image source.
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SkTScopedComPtr<IWICBitmapSource> imageSource;
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hr = imageFrame->QueryInterface(IID_PPV_ARGS(&imageSource));
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if (FAILED(hr)) {
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return nullptr;
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}
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// Get the size of the image.
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UINT width;
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UINT height;
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hr = imageSource->GetSize(&width, &height);
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if (FAILED(hr)) {
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return nullptr;
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}
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// Get the encoded pixel format.
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WICPixelFormatGUID format;
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hr = imageSource->GetPixelFormat(&format);
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if (FAILED(hr)) {
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return nullptr;
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}
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// Recommend kOpaque if the image is opaque and kPremul otherwise.
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// FIXME: We are stuck recommending kPremul for all indexed formats
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// (Ex: GUID_WICPixelFormat8bppIndexed) because we don't have
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// a way to check if the image has alpha.
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SkAlphaType alphaType = kPremul_SkAlphaType;
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if (GUID_WICPixelFormat16bppBGR555 == format ||
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GUID_WICPixelFormat16bppBGR565 == format ||
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GUID_WICPixelFormat32bppBGR101010 == format ||
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GUID_WICPixelFormatBlackWhite == format ||
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GUID_WICPixelFormat2bppGray == format ||
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GUID_WICPixelFormat4bppGray == format ||
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GUID_WICPixelFormat8bppGray == format ||
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GUID_WICPixelFormat16bppGray == format ||
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GUID_WICPixelFormat16bppGrayFixedPoint == format ||
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GUID_WICPixelFormat16bppGrayHalf == format ||
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GUID_WICPixelFormat32bppGrayFloat == format ||
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GUID_WICPixelFormat32bppGrayFixedPoint == format ||
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GUID_WICPixelFormat32bppRGBE == format ||
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GUID_WICPixelFormat24bppRGB == format ||
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GUID_WICPixelFormat24bppBGR == format ||
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GUID_WICPixelFormat32bppBGR == format ||
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GUID_WICPixelFormat48bppRGB == format ||
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GUID_WICPixelFormat48bppBGR == format ||
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GUID_WICPixelFormat48bppRGBFixedPoint == format ||
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GUID_WICPixelFormat48bppBGRFixedPoint == format ||
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GUID_WICPixelFormat48bppRGBHalf == format ||
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GUID_WICPixelFormat64bppRGBFixedPoint == format ||
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GUID_WICPixelFormat64bppRGBHalf == format ||
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GUID_WICPixelFormat96bppRGBFixedPoint == format ||
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GUID_WICPixelFormat128bppRGBFloat == format ||
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GUID_WICPixelFormat128bppRGBFixedPoint == format ||
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GUID_WICPixelFormat32bppRGB == format ||
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GUID_WICPixelFormat64bppRGB == format ||
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GUID_WICPixelFormat96bppRGBFloat == format ||
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GUID_WICPixelFormat32bppCMYK == format ||
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GUID_WICPixelFormat64bppCMYK == format ||
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GUID_WICPixelFormat8bppY == format ||
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GUID_WICPixelFormat8bppCb == format ||
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GUID_WICPixelFormat8bppCr == format ||
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GUID_WICPixelFormat16bppCbCr == format)
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{
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alphaType = kOpaque_SkAlphaType;
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}
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// FIXME: If we change the implementation to handle swizzling ourselves,
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// we can support more output formats.
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2016-12-16 14:02:18 +00:00
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SkImageInfo info = SkImageInfo::MakeS32(width, height, alphaType);
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2016-03-17 20:50:17 +00:00
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return new SkImageGeneratorWIC(info, imagingFactory.release(), imageSource.release(), data);
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}
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SkImageGeneratorWIC::SkImageGeneratorWIC(const SkImageInfo& info,
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IWICImagingFactory* imagingFactory, IWICBitmapSource* imageSource, SkData* data)
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: INHERITED(info)
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, fImagingFactory(imagingFactory)
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, fImageSource(imageSource)
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, fData(SkRef(data))
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{}
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2018-05-15 18:12:14 +00:00
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sk_sp<SkData> SkImageGeneratorWIC::onRefEncodedData() {
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return fData;
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}
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2016-03-17 20:50:17 +00:00
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bool SkImageGeneratorWIC::onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
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2017-05-12 15:41:27 +00:00
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const Options&) {
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2016-03-17 20:50:17 +00:00
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if (kN32_SkColorType != info.colorType()) {
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return false;
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}
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// Create a format converter.
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SkTScopedComPtr<IWICFormatConverter> formatConverter;
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HRESULT hr = fImagingFactory->CreateFormatConverter(&formatConverter);
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if (FAILED(hr)) {
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return false;
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}
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GUID format = GUID_WICPixelFormat32bppPBGRA;
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if (kUnpremul_SkAlphaType == info.alphaType()) {
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format = GUID_WICPixelFormat32bppBGRA;
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}
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hr = formatConverter->Initialize(fImageSource.get(), format, WICBitmapDitherTypeNone, nullptr,
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0.0, WICBitmapPaletteTypeCustom);
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if (FAILED(hr)) {
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return false;
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}
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// Treat the format converter as an image source.
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SkTScopedComPtr<IWICBitmapSource> formatConverterSrc;
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hr = formatConverter->QueryInterface(IID_PPV_ARGS(&formatConverterSrc));
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if (FAILED(hr)) {
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return false;
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}
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// Set the destination pixels.
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hr = formatConverterSrc->CopyPixels(nullptr, (UINT) rowBytes, (UINT) rowBytes * info.height(),
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(BYTE*) pixels);
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return SUCCEEDED(hr);
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}
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