audio: hal: support audio zoom interface for qdsp

The interface parse audio zoom parameter and then send to QDSP via
ACDB-LOADER

Bug: 125191693
Test: set parameters successfully

Change-Id: I7a1a74deb5d7dade7faa59c5ec8e2dc3e5648537
Signed-off-by: justinweng <justinweng@google.com>
diff --git a/hal/audio_extn/audiozoom.h b/hal/audio_extn/audiozoom.h
new file mode 100644
index 0000000..2c0ad71
--- /dev/null
+++ b/hal/audio_extn/audiozoom.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2019 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 AUDIOZOOM_H_
+#define AUDIOZOOM_H_
+
+#ifndef AUDIOZOOM_QDSP_ENABLED
+#define audio_extn_audiozoom_init()                                          (0)
+#define audio_extn_audiozoom_set_microphone_direction(stream, dir)           (-ENOSYS)
+#define audio_extn_audiozoom_set_microphone_field_dimension(stream, zoom)    (-ENOSYS)
+#else
+int audio_extn_audiozoom_init();
+int audio_extn_audiozoom_set_microphone_direction(struct stream_in *stream,
+                                           audio_microphone_direction_t dir);
+int audio_extn_audiozoom_set_microphone_field_dimension(struct stream_in *stream, float zoom);
+#endif
+
+#endif /* AUDIOZOOM_H_ */