Default implementation for AudioControl AIDL HAL
Bug: b/170335834
Test: Built in target and ran `adb shell dumpsys
android.hardware.automotive.audiocontrol.IAudioControl/default` commands
Change-Id: Iccf5784fce7635c78ca8cc0f9066b4dc9f24b3bd
diff --git a/automotive/audiocontrol/aidl/default/AudioControl.h b/automotive/audiocontrol/aidl/default/AudioControl.h
new file mode 100644
index 0000000..a77da3e
--- /dev/null
+++ b/automotive/audiocontrol/aidl/default/AudioControl.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2020 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_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H
+
+#include <aidl/android/hardware/automotive/audiocontrol/AudioFocusChange.h>
+#include <aidl/android/hardware/automotive/audiocontrol/BnAudioControl.h>
+
+namespace aidl::android::hardware::automotive::audiocontrol {
+
+using ::std::shared_ptr;
+
+class AudioControl : public BnAudioControl {
+ public:
+ ndk::ScopedAStatus onAudioFocusChange(const std::string& in_usage, int32_t in_zoneId,
+ AudioFocusChange in_focusChange) override;
+ ndk::ScopedAStatus registerFocusListener(
+ const shared_ptr<IFocusListener>& in_listener) override;
+ ndk::ScopedAStatus setBalanceTowardRight(float in_value) override;
+ ndk::ScopedAStatus setFadeTowardFront(float in_value) override;
+ binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
+
+ private:
+ // This focus listener will only be used by this HAL instance to communicate with
+ // a single instance of CarAudioService. As such, it doesn't have explicit serialization.
+ // If a different AudioControl implementation were to have multiple threads leveraging this
+ // listener, then it should also include mutexes or make the listener atomic.
+ shared_ptr<IFocusListener> mFocusListener;
+
+ binder_status_t cmdHelp(int fd) const;
+ binder_status_t cmdRequestFocus(int fd, const char** args, uint32_t numArgs);
+ binder_status_t cmdAbandonFocus(int fd, const char** args, uint32_t numArgs);
+ binder_status_t dumpsys(int fd);
+};
+
+} // namespace aidl::android::hardware::automotive::audiocontrol
+
+#endif // ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H