diff --git a/services/oboeservice/FakeAudioHal.h b/services/oboeservice/FakeAudioHal.h
new file mode 100644
index 0000000..d6f28b2
--- /dev/null
+++ b/services/oboeservice/FakeAudioHal.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+/**
+ * Simple fake HAL that supports ALSA MMAP/NOIRQ mode.
+ */
+
+#ifndef FAKE_AUDIO_HAL_H
+#define FAKE_AUDIO_HAL_H
+
+//namespace oboe {
+
+using sample_t = int16_t;
+struct mmap_buffer_info {
+    int       fd;
+    int32_t   burst_size_in_frames;
+    int32_t   buffer_capacity_in_frames;
+    int32_t   buffer_capacity_in_bytes;
+    int32_t   sample_rate;
+    int32_t   channel_count;
+    sample_t *hw_buffer;
+};
+
+typedef void *fake_hal_stream_ptr;
+
+//extern "C"
+//{
+
+int fake_hal_open(int card_id, int device_id, fake_hal_stream_ptr *stream_pp);
+
+int fake_hal_get_mmap_info(fake_hal_stream_ptr stream, mmap_buffer_info *info);
+
+int fake_hal_start(fake_hal_stream_ptr stream);
+
+int fake_hal_pause(fake_hal_stream_ptr stream);
+
+int fake_hal_get_frame_counter(fake_hal_stream_ptr stream, int *frame_counter);
+
+int fake_hal_close(fake_hal_stream_ptr stream);
+
+//} /* "C" */
+
+//} /* namespace oboe */
+
+#endif // FAKE_AUDIO_HAL_H