diff --git a/modules/usbaudio/format.h b/modules/usbaudio/format.h
new file mode 100644
index 0000000..e23935e
--- /dev/null
+++ b/modules/usbaudio/format.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_FORMAT_H
+#define ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_FORMAT_H
+
+#include <system/audio.h>
+
+#include <tinyalsa/asoundlib.h>
+
+audio_format_t get_format_for_mask(struct pcm_mask* mask);
+enum pcm_format get_pcm_format_for_mask(struct pcm_mask* mask);
+
+#endif /* ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_FORMAT_H */