diff --git a/libs/renderengine/Description.cpp b/libs/renderengine/Description.cpp
new file mode 100644
index 0000000..b9cea10
--- /dev/null
+++ b/libs/renderengine/Description.cpp
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <renderengine/private/Description.h>
+
+#include <stdint.h>
+
+#include <utils/TypeHelpers.h>
+
+namespace android {
+namespace renderengine {
+
+Description::TransferFunction Description::dataSpaceToTransferFunction(ui::Dataspace dataSpace) {
+    ui::Dataspace transfer = static_cast<ui::Dataspace>(dataSpace & ui::Dataspace::TRANSFER_MASK);
+    switch (transfer) {
+        case ui::Dataspace::TRANSFER_ST2084:
+            return Description::TransferFunction::ST2084;
+        case ui::Dataspace::TRANSFER_HLG:
+            return Description::TransferFunction::HLG;
+        case ui::Dataspace::TRANSFER_LINEAR:
+            return Description::TransferFunction::LINEAR;
+        default:
+            return Description::TransferFunction::SRGB;
+    }
+}
+
+bool Description::hasInputTransformMatrix() const {
+    const mat4 identity;
+    return inputTransformMatrix != identity;
+}
+
+bool Description::hasOutputTransformMatrix() const {
+    const mat4 identity;
+    return outputTransformMatrix != identity;
+}
+
+bool Description::hasColorMatrix() const {
+    const mat4 identity;
+    return colorMatrix != identity;
+}
+
+} // namespace renderengine
+} // namespace android