Method ImageSourceFileTinyExr

src/cinder/ImageFileTinyExr.cpp:51–159

}

ImageSourceFileTinyExr::ImageSourceFileTinyExr( DataSourceRef dataSource, ImageSource::Options /*options*/ )
	: mExrHeader( new EXRHeader, FreeEXRHeader ) // We're using the provided FreeEXRHeader function as a custom deleter
	, mExrImage( new EXRImage, FreeEXRImage )    // We're using the provided FreeEXRImage function as a custom deleter
{
	InitEXRHeader( mExrHeader.get() );
	InitEXRImage( mExrImage.get() );

	int status = 0;

	EXRVersion version;
	status = ParseEXRVersionFromFile( &version, dataSource->getFilePath().string().c_str() );
	if( status != TINYEXR_SUCCESS )
		throw ImageIoExceptionFailedLoadTinyExr( string( "Failed to parse OpenEXR version" ) );

	if( version.multipart )
		throw ImageIoExceptionFailedLoadTinyExr( "Multi-part EXR not supported" );
	if( version.non_image )
		throw ImageIoExceptionFailedLoadTinyExr( "Deep image EXR not supported" );
	if( version.tiled )
		throw ImageIoExceptionFailedLoadTinyExr( "Tiled EXR not supported" );

	if( dataSource->isFilePath() ) {
		const string filename = dataSource->getFilePath().string();

		const char *error = nullptr;
		status = ParseEXRHeaderFromFile( mExrHeader.get(), &version, filename.c_str(), &error );
		if( status != TINYEXR_SUCCESS ) {
			string errorMsg = error ? string( "Failed to parse OpenEXR header; Error message: " ) + error : "Failed to parse OpenEXR header";
			if( error )
				FreeEXRErrorMessage( error );
			throw ImageIoExceptionFailedLoadTinyExr( errorMsg );
		}

		status = LoadEXRImageFromFile( mExrImage.get(), mExrHeader.get(), filename.c_str(), &error );
		if( status != TINYEXR_SUCCESS ) {
			string errorMsg = error ? string( "Failed to parse OpenEXR file; Error message: " ) + error : "Failed to parse OpenEXR file";
			if( error )
				FreeEXRErrorMessage( error );
			throw ImageIoExceptionFailedLoadTinyExr( errorMsg );
		}
	}
	else {
		const auto buffer = dataSource->getBuffer();
		const auto memory = static_cast<const unsigned char *>( buffer->getData() );
		const size_t size = buffer->getSize();

		const char *error = nullptr;
		status = ParseEXRHeaderFromMemory( mExrHeader.get(), &version, memory, size, &error );
		if( status != TINYEXR_SUCCESS ) {
			string errorMsg = error ? string( "Failed to parse OpenEXR header; Error message: " ) + error : "Failed to parse OpenEXR header";
			if( error )
				FreeEXRErrorMessage( error );
			throw ImageIoExceptionFailedLoadTinyExr( errorMsg );
		}

		status = LoadEXRImageFromMemory( mExrImage.get(), mExrHeader.get(), memory, size, &error );
		if( status != TINYEXR_SUCCESS ) {
			string errorMsg = error ? string( "Failed to parse OpenEXR file; Error message: " ) + error : "Failed to parse OpenEXR file";