blob: 79d107adec36d536d0c8ddd81050de6a5e0280b3 [file] [log] [blame]
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#include <wincodec.h>
#include "SkAutoCoInitialize.h"
#include "SkImageDecoder.h"
#include "SkImageEncoder.h"
#include "SkIStream.h"
#include "SkMovie.h"
#include "SkStream.h"
#include "SkTScopedComPtr.h"
class SkImageDecoder_WIC : public SkImageDecoder {
protected:
virtual bool onDecode(SkStream* stream, SkBitmap* bm, Mode mode);
};
bool SkImageDecoder_WIC::onDecode(SkStream* stream, SkBitmap* bm, Mode mode) {
//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
, NULL
, CLSCTX_INPROC_SERVER
, IID_PPV_ARGS(&piImagingFactory)
);
}
//Convert SkStream to IStream.
SkTScopedComPtr<IStream> piStream;
if (SUCCEEDED(hr)) {
hr = SkIStream::CreateFromSkStream(stream, false, &piStream);
}
//Make sure we're at the beginning of the stream.
if (SUCCEEDED(hr)) {
LARGE_INTEGER liBeginning = { 0 };
hr = piStream->Seek(liBeginning, STREAM_SEEK_SET, NULL);
}
//Create the decoder from the stream content.
SkTScopedComPtr<IWICBitmapDecoder> piBitmapDecoder;
if (SUCCEEDED(hr)) {
hr = piImagingFactory->CreateDecoderFromStream(
piStream.get() //Image to be decoded
, NULL //No particular vendor
, WICDecodeMetadataCacheOnDemand //Cache metadata when needed
, &piBitmapDecoder //Pointer to the decoder
);
}
//Get the first frame from the decoder.
SkTScopedComPtr<IWICBitmapFrameDecode> piBitmapFrameDecode;
if (SUCCEEDED(hr)) {
hr = piBitmapDecoder->GetFrame(0, &piBitmapFrameDecode);
}
//Get the BitmapSource interface of the frame.
SkTScopedComPtr<IWICBitmapSource> piBitmapSourceOriginal;
if (SUCCEEDED(hr)) {
hr = piBitmapFrameDecode->QueryInterface(
IID_PPV_ARGS(&piBitmapSourceOriginal)
);
}
//Get the size of the bitmap.
UINT width;
UINT height;
if (SUCCEEDED(hr)) {
hr = piBitmapSourceOriginal->GetSize(&width, &height);
}
//Exit early if we're only looking for the bitmap bounds.
if (SUCCEEDED(hr)) {
bm->setConfig(SkBitmap::kARGB_8888_Config, width, height);
if (SkImageDecoder::kDecodeBounds_Mode == mode) {
return true;
}
if (!this->allocPixelRef(bm, NULL)) {
return false;
}
}
//Create a format converter.
SkTScopedComPtr<IWICFormatConverter> piFormatConverter;
if (SUCCEEDED(hr)) {
hr = piImagingFactory->CreateFormatConverter(&piFormatConverter);
}
if (SUCCEEDED(hr)) {
hr = piFormatConverter->Initialize(
piBitmapSourceOriginal.get() //Input bitmap to convert
, GUID_WICPixelFormat32bppPBGRA //Destination pixel format
, WICBitmapDitherTypeNone //Specified dither patterm
, NULL //Specify a particular palette
, 0.f //Alpha threshold
, WICBitmapPaletteTypeCustom //Palette translation type
);
}
//Get the BitmapSource interface of the format converter.
SkTScopedComPtr<IWICBitmapSource> piBitmapSourceConverted;
if (SUCCEEDED(hr)) {
hr = piFormatConverter->QueryInterface(
IID_PPV_ARGS(&piBitmapSourceConverted)
);
}
//Copy the pixels into the bitmap.
if (SUCCEEDED(hr)) {
SkAutoLockPixels alp(*bm);
bm->eraseColor(0);
const int stride = bm->rowBytes();
hr = piBitmapSourceConverted->CopyPixels(
NULL, //Get all the pixels
stride,
stride * height,
reinterpret_cast<BYTE *>(bm->getPixels())
);
}
return SUCCEEDED(hr);
}
/////////////////////////////////////////////////////////////////////////
SkImageDecoder* SkImageDecoder::Factory(SkStream* stream) {
return SkNEW(SkImageDecoder_WIC);
}
/////////////////////////////////////////////////////////////////////////
SkMovie* SkMovie::DecodeStream(SkStream* stream) {
return NULL;
}
/////////////////////////////////////////////////////////////////////////
class SkImageEncoder_WIC : public SkImageEncoder {
public:
SkImageEncoder_WIC(Type t) : fType(t) {}
protected:
virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality);
private:
Type fType;
};
bool SkImageEncoder_WIC::onEncode(SkWStream* stream
, const SkBitmap& bitmapOrig
, int quality)
{
GUID type;
switch (fType) {
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 (SkBitmap::kARGB_8888_Config == bitmapOrig.config()) {
bitmap = &bitmapOrig;
} else {
if (!bitmapOrig.copyTo(&bitmapCopy, SkBitmap::kARGB_8888_Config)) {
return false;
}
bitmap = &bitmapCopy;
}
//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
, 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 = 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);
hr = piBitmapFrameEncode->WritePixels(
height
, bitmap->rowBytes()
, bitmap->rowBytes()*height
, reinterpret_cast<BYTE*>(bitmap->getPixels()));
}
if (SUCCEEDED(hr)) {
hr = piBitmapFrameEncode->Commit();
}
if (SUCCEEDED(hr)) {
hr = piEncoder->Commit();
}
return SUCCEEDED(hr);
}
SkImageEncoder* SkImageEncoder::Create(Type t) {
switch (t) {
case kJPEG_Type:
case kPNG_Type:
break;
default:
return NULL;
}
return SkNEW_ARGS(SkImageEncoder_WIC, (t));
}