std::pair<BYTE*, UINT> Picture::GetBitmapData(const WICRect& rect)
{
IWICBitmapLock* lock = nullptr;
bitmap->Lock(&rect,
WICBitmapLockRead | WICBitmapLockWrite,
&lock);
BYTE* dataPtr = nullptr;
UINT size = 0;
lock->GetDataPointer(&size, &dataPtr);
lock->Release();
return std::make_pair(dataPtr, size);
}
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);
}
