static bool convert_file_icon(const HICON icon, Bmp& bmp) {
static IWICImagingFactory* img_factory = 0;
if (!img_factory) {
// In VS 2011 beta, clsid has to be changed to CLSID_WICImagingFactory1 (from CLSID_WICImagingFactory)
if (!SUCCEEDED(::CoInitialize(0)) || !SUCCEEDED(::CoCreateInstance(CLSID_WICImagingFactory1, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&img_factory)))) {
return false;
}
}
IWICBitmap* pBitmap = 0;
IWICFormatConverter* pConverter = 0;
UINT cx = 0, cy = 0;
if (SUCCEEDED(img_factory->CreateBitmapFromHICON(icon, &pBitmap))) {
if (SUCCEEDED(img_factory->CreateFormatConverter(&pConverter))) {
if (SUCCEEDED(pConverter->Initialize(pBitmap, GUID_WICPixelFormat32bppPBGRA, WICBitmapDitherTypeNone, 0, 0.0f, WICBitmapPaletteTypeCustom))) {
if (SUCCEEDED(pConverter->GetSize(&cx, &cy))) {
const UINT stride = cx * sizeof(DWORD);
const UINT buf_size = cy * stride;
Byte* buf = new Byte[buf_size];
pConverter->CopyPixels(0, stride, buf_size, buf);
bmp.load_bits_only(buf, buf_size, cx, -(int)cy);
delete [] buf;
}
}
pConverter->Release();
}
pBitmap->Release();
}
return true;
}
Image::Buffer * WIC::Api::CreateImage(char * buffer, unsigned bufferLength)
{
if(!factory) return 0;
// Create input stream for memory
IWICStream * stream = 0;
factory->CreateStream(&stream);
if(!stream) return 0;
stream->InitializeFromMemory((unsigned char*)(buffer), static_cast<DWORD>(bufferLength));
IWICBitmapDecoder * decoder = 0;
factory->CreateDecoderFromStream(stream, 0, WICDecodeMetadataCacheOnDemand, &decoder);
if(!decoder) return 0;
IWICBitmapFrameDecode * bitmapSource = 0;
decoder->GetFrame(0, &bitmapSource);
if(!bitmapSource)
{
decoder->Release();
return 0;
}
IWICBitmapSource * convertedSource = 0;
WICConvertBitmapSource(GUID_WICPixelFormat32bppRGBA, bitmapSource, &convertedSource);
bitmapSource->Release();
if(!convertedSource)
{
decoder->Release();
return 0;
}
// Create the bitmap from the image frame.
IWICBitmap * bitmap = 0;
factory->CreateBitmapFromSource(
convertedSource, // Create a bitmap from the image frame
WICBitmapCacheOnDemand, // Cache metadata when needed
&bitmap); // Pointer to the bitmap
convertedSource->Release();
decoder->Release();
if(!bitmap) return 0;
unsigned width = 0, height = 0;
bitmap->GetSize(&width, &height);
WICRect lockRect = { 0, 0, width, height };
IWICBitmapLock * lock = 0;
bitmap->Lock(&lockRect, WICBitmapLockWrite, &lock);
if(!lock)
{
bitmap->Release();
return 0;
}
return new WIC::Buffer(bitmap, lock, width, height);
}
BitmapWrapperD2D::BitmapWrapperD2D(bitmap bmp)
{
IWICBitmap* wic = 0;
Graphics::locator.getfactory()->CreateBitmapFromMemory(
bmp.width(), bmp.height(),
GUID_WICPixelFormat32bppBGRA,
4 * bmp.width(),
bmp.length(),
(BYTE*)bmp.data(),
&wic);
if (wic != 0)
{
IWICFormatConverter* converter = nullptr;
IWICBitmap* temp = nullptr;
int result = Graphics::locator.getfactory()->CreateFormatConverter(&converter);
if (result == 0)
{
converter->Initialize(wic,
GUID_WICPixelFormat32bppPBGRA,
WICBitmapDitherTypeNone, 0, 0.f,
WICBitmapPaletteTypeMedianCut);
Graphics::locator.getfactory()->CreateBitmapFromSource(converter, WICBitmapNoCache, &temp);
converter->Release();
}
wic->Release();
ID2D1BitmapRenderTarget* target = Graphics::locator.gettarget();
if (target)
{
target->CreateBitmapFromWicBitmap(temp, &source);
temp->Release();
temp = nullptr;
}
else
{
source = nullptr;
}
}
else
{
source = nullptr;
}
}
pair<imgcontext, size_t> imagecache::createimage(bitmap bmp)
{
size_t id = bmp.id();
if (temp[imgcon][id] || cache[imgcon][id])
{
return make_pair(imgcon, id);
}
else
{
IWICBitmap* wic = 0;
imgfactory->CreateBitmapFromMemory(
bmp.width(), bmp.height(),
GUID_WICPixelFormat32bppBGRA,
4 * bmp.width(),
bmp.length(),
(BYTE*)bmp.data(),
&wic);
if (wic)
{
IWICFormatConverter* spConverter = 0;
int result = imgfactory->CreateFormatConverter(&spConverter);
if (result == 0)
{
spConverter->Initialize(wic,
GUID_WICPixelFormat32bppPBGRA,
WICBitmapDitherTypeNone, NULL, 0.f,
WICBitmapPaletteTypeMedianCut);
imgfactory->CreateBitmapFromSource(spConverter, WICBitmapNoCache, &temp[imgcon][id]);
spConverter->Release();
}
wic->Release();
}
}
return make_pair(imgcon, id);
}
Image::Buffer * WIC::Api::CreateImage(char * data, unsigned dataSize, unsigned w, unsigned h, Image::Format format)
{
IWICBitmap * bitmap = 0;
factory->CreateBitmap(w, h, IMAGE_FORMAT_TO_WIC_GUID[format], WICBitmapCacheOnLoad, &bitmap);
if(!bitmap) return 0;
WICRect lockRect = { 0, 0, w, h };
IWICBitmapLock * lock = 0;
bitmap->Lock(&lockRect, WICBitmapLockWrite, &lock);
if(!lock)
{
bitmap->Release();
return 0;
}
unsigned bufferSize = 0;
WICInProcPointer dataPointer = 0;
lock->GetDataPointer(&bufferSize, &dataPointer);
memcpy(dataPointer, data, dataSize);
lock->Release();
lock = 0;
if(format != Image::Format_4x8intRGBA)
{
IWICBitmapSource * convertedSource = 0;
WICConvertBitmapSource(GUID_WICPixelFormat32bppRGBA, bitmap, &convertedSource);
bitmap->Release();
bitmap = 0;
if(!convertedSource) return 0;
// Create the bitmap from the image frame.
factory->CreateBitmapFromSource(
convertedSource, // Create a bitmap from the image frame
WICBitmapCacheOnDemand, // Cache metadata when needed
&bitmap); // Pointer to the bitmap
convertedSource->Release();
if(!bitmap) return 0;
}
bitmap->Lock(&lockRect, WICBitmapLockWrite, &lock);
if(!lock)
{
bitmap->Release();
return 0;
}
return new WIC::Buffer(bitmap, lock, w, h);
}
HRESULT CMainWindow::DecodeImageFromThumbCache(
IShellItem *pShellItem,
ID2D1Bitmap **ppBitmap
)
{
const UINT THUMB_SIZE = 256;
// Read the bitmap from the thumbnail cache
IThumbnailCache *pThumbCache;
HRESULT hr = CoCreateInstance(
CLSID_LocalThumbnailCache,
NULL,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&pThumbCache)
);
if (SUCCEEDED(hr))
{
ISharedBitmap *pBitmap;
hr = pThumbCache->GetThumbnail(
pShellItem,
THUMB_SIZE,
WTS_SCALETOREQUESTEDSIZE,
&pBitmap,
NULL,
NULL
);
if (SUCCEEDED(hr))
{
HBITMAP hBitmap;
hr = pBitmap->GetSharedBitmap(
&hBitmap
);
if (SUCCEEDED(hr))
{
// Create a WIC bitmap from the shared bitmap
IWICImagingFactory *pFactory;
hr = CoCreateInstance(
CLSID_WICImagingFactory,
NULL,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&pFactory)
);
if (SUCCEEDED(hr))
{
IWICBitmap *pWICBitmap;
hr = pFactory->CreateBitmapFromHBITMAP(
hBitmap,
NULL,
WICBitmapIgnoreAlpha,
&pWICBitmap
);
if (SUCCEEDED(hr))
{
// Create a D2D bitmap from the WIC bitmap
hr = m_pRenderTarget->CreateBitmapFromWicBitmap(
pWICBitmap,
NULL,
ppBitmap
);
pWICBitmap->Release();
}
pFactory->Release();
}
}
pBitmap->Release();
}
pThumbCache->Release();
}
return hr;
}
// 解码照片的基础位图文件的.
HRESULT VideoEncoder::DecodeFrame(Photo* pPhoto, BYTE** ppOutputBitmap, int* pBitmapSize)
{
HRESULT hr = S_OK;
IWICBitmapDecoder *pDecoder = nullptr;
IWICBitmapFrameDecode *pFrame = nullptr;
IWICBitmap* pSourceBitmap = nullptr;
IWICBitmapLock* pLock = nullptr;
BYTE* pSourceBuffer = nullptr;
BYTE* pDestinationBuffer = nullptr;
UINT pixelWidth;
UINT pixelHeight;
WICRect lockRect;
*ppOutputBitmap = nullptr;
hr = m_pIWICFactory->CreateDecoderFromFilename(
pPhoto->GetFile().c_str(),
nullptr,
GENERIC_READ,
WICDecodeMetadataCacheOnDemand,
&pDecoder
);
CheckHR(hr);
this->m_logFileStream << "WIC解码器创建成功." << endl;
GUID containerFormat;
CheckHR(pDecoder->GetContainerFormat(&containerFormat));
// 我们仅支持jpg 文件.
if (containerFormat != GUID_ContainerFormatJpeg)
{
this->m_logFileStream << "仅支持jpeg文件." << endl;
return E_NOTSUPPORTEDFORMAT;
}
// 我们仅支持jpg 文件. 因此只有一桢.
CheckHR(pDecoder->GetFrame(0, &pFrame));
// TODO: 目前我们需要所有照片有相同的大小.
// 如果需求在将来发生变化，修改代码.
pFrame->GetSize(&pixelWidth, &pixelHeight);
if (pixelWidth != this->m_frameWidth || pixelHeight != this->m_frameHeight)
{
this->m_logFileStream << "所有的照片必须使用固定的大小." << endl;
return E_IMAGESIZEINCORRECT;
}
// 创建源位图对象.
CheckHR(this->m_pIWICFactory->CreateBitmapFromSource(pFrame, WICBitmapCacheOnLoad, &pSourceBitmap));
this->m_logFileStream << "位图资源创建成功." << endl;
lockRect.X = 0;
lockRect.Y = 0;
lockRect.Width = pixelWidth;
lockRect.Height = pixelHeight;
CheckHR(pSourceBitmap->Lock(&lockRect, WICBitmapLockWrite, &pLock));
UINT sourceBufferSize;
CheckHR(pLock->GetDataPointer(&sourceBufferSize, &pSourceBuffer));
// Jpg BGR 位图转换 RGBA 格式.
UINT destinationBufferSize = sourceBufferSize / 3 * 4;
pDestinationBuffer = new BYTE[destinationBufferSize];
for (UINT i = 0, j = 0; i < sourceBufferSize; i+=3, j+=4)
{
pDestinationBuffer[j] = pSourceBuffer[i]; // R
pDestinationBuffer[j + 1] = pSourceBuffer[i + 1]; // G
pDestinationBuffer[j + 2] = pSourceBuffer[i + 2]; // B
pDestinationBuffer[j + 3] = 255; // A
}
*ppOutputBitmap = pDestinationBuffer;
*pBitmapSize = destinationBufferSize;
cleanup:
if (!SUCCEEDED(hr))
{
DWORD error = GetLastError();
this->m_logFileStream << "意外错误: " << error << endl;
this->m_logFileStream << "HResult是: " << hr << endl;
}
if (pSourceBuffer != nullptr)
{
// 删除pSourceBuffer;
}
SafeRelease(&pDecoder);
SafeRelease(&pFrame);
SafeRelease(&pSourceBitmap);
SafeRelease(&pLock);
return hr;
}