Function LoadJPEGFile

shared/LoadImage.c:175–215

}

HBITMAP LoadJPEGFile(LPCWSTR filePath) {
	if (!$WICConvertBitmapSource) {
		HMODULE windowscodecs = LoadLibrary(L"windowscodecs.dll");
		if (windowscodecs) {
			$WICConvertBitmapSource = (_WICConvertBitmapSource)GetProcAddress(windowscodecs, "WICConvertBitmapSource");
		}
		if (!$WICConvertBitmapSource) {
			return NULL;
		}
	}

	if (!$SHCreateStreamOnFileEx) {
		HMODULE shlwapi = LoadLibrary(L"shlwapi.dll");
		if (shlwapi) {
			$SHCreateStreamOnFileEx = (_SHCreateStreamOnFileEx)GetProcAddress(shlwapi, "SHCreateStreamOnFileEx");
		}
		if (!$SHCreateStreamOnFileEx) {
			return NULL;
		}
	}

	IStream *imageStream = NULL;
	HRESULT hr = $SHCreateStreamOnFileEx(filePath, STGM_READ, FILE_ATTRIBUTE_NORMAL, FALSE, NULL, &imageStream);
	if (!SUCCEEDED(hr)) {
		CHECK_HR(L"SHCreateStreamOnFileEx failed");
		return NULL;
	}

	IWICBitmapSource *bitmap = GetWICBitmap(imageStream, &CLSID_WICJpegDecoder);
	if (!bitmap) {
		hr = HRESULT_FROM_WIN32(GetLastError());
		CHECK_HR(L"GetWICBitmap failed");
		IStream_Release(imageStream);
		return NULL;
	}

	HBITMAP result = GetHBitmapForWICBitmap(bitmap);
	IWICBitmapSource_Release(bitmap);
	IStream_Release(imageStream);
	return result;
}

BOOL ScaleAndWriteToBMP(HBITMAP hBitmap, DWORD width, DWORD height, LPCWSTR outputPath) {
	BOOL result = FALSE;