Adding v2 of audiocontrol hal
- Removes deprecated getBusForContext
- Adds APIs for enabling HAL to request and abandon audio focus
Bug: 148098383
Test: vts-tradefed -module VtsHalAudioControlV2_0TargetTest
Change-Id: I353bbd8ea7708ffb59831a8e1008951146798034
diff --git a/automotive/audiocontrol/2.0/default/Android.bp b/automotive/audiocontrol/2.0/default/Android.bp
new file mode 100644
index 0000000..44ad028
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/Android.bp
@@ -0,0 +1,39 @@
+// 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.
+
+cc_binary {
+ name: "android.hardware.automotive.audiocontrol@2.0-service",
+ defaults: ["hidl_defaults"],
+ vendor: true,
+ relative_install_path: "hw",
+ srcs: [
+ "AudioControl.cpp",
+ "service.cpp",
+ "CloseHandle.cpp",
+ ],
+ init_rc: ["android.hardware.automotive.audiocontrol@2.0-service.rc"],
+
+ shared_libs: [
+ "android.hardware.automotive.audiocontrol@2.0",
+ "libbase",
+ "libhidlbase",
+ "liblog",
+ "libutils",
+ ],
+ vintf_fragments: ["audiocontrol2_manifest.xml"],
+ cflags: [
+ "-O0",
+ "-g",
+ ],
+}
diff --git a/automotive/audiocontrol/2.0/default/AudioControl.cpp b/automotive/audiocontrol/2.0/default/AudioControl.cpp
new file mode 100644
index 0000000..6505e34
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/AudioControl.cpp
@@ -0,0 +1,60 @@
+#include "AudioControl.h"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "CloseHandle.h"
+
+namespace android::hardware::automotive::audiocontrol::V2_0::implementation {
+
+AudioControl::AudioControl() {}
+
+Return<sp<ICloseHandle>> AudioControl::registerFocusListener(const sp<IFocusListener>& listener) {
+ LOG(DEBUG) << "registering focus listener";
+ sp<ICloseHandle> closeHandle(nullptr);
+
+ if (listener) {
+ mFocusListener = listener;
+
+ closeHandle = new CloseHandle([this, listener]() {
+ if (mFocusListener == listener) {
+ mFocusListener = nullptr;
+ }
+ });
+ } else {
+ LOG(ERROR) << "Unexpected nullptr for listener resulting in no-op.";
+ }
+
+ return closeHandle;
+}
+
+Return<void> AudioControl::setBalanceTowardRight(float value) {
+ // For completeness, lets bounds check the input...
+ if (isValidValue(value)) {
+ LOG(ERROR) << "Balance value out of range -1 to 1 at " << value;
+ } else {
+ // Just log in this default mock implementation
+ LOG(INFO) << "Balance set to " << value;
+ }
+ return Void();
+}
+
+Return<void> AudioControl::setFadeTowardFront(float value) {
+ // For completeness, lets bounds check the input...
+ if (isValidValue(value)) {
+ LOG(ERROR) << "Fader value out of range -1 to 1 at " << value;
+ } else {
+ // Just log in this default mock implementation
+ LOG(INFO) << "Fader set to " << value;
+ }
+ return Void();
+}
+
+Return<void> AudioControl::onAudioFocusChange(hidl_bitfield<AudioUsage> usage, int zoneId,
+ hidl_bitfield<AudioFocusChange> focusChange) {
+ LOG(INFO) << "Focus changed: " << static_cast<int>(focusChange) << " for usage "
+ << static_cast<int>(usage) << " in zone " << zoneId;
+ return Void();
+}
+
+} // namespace android::hardware::automotive::audiocontrol::V2_0::implementation
diff --git a/automotive/audiocontrol/2.0/default/AudioControl.h b/automotive/audiocontrol/2.0/default/AudioControl.h
new file mode 100644
index 0000000..475a693
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/AudioControl.h
@@ -0,0 +1,49 @@
+/*
+ * 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_V2_0_AUDIOCONTROL_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_V2_0_AUDIOCONTROL_H
+
+#include <android/hardware/audio/common/6.0/types.h>
+#include <android/hardware/automotive/audiocontrol/2.0/IAudioControl.h>
+#include <android/hardware/automotive/audiocontrol/2.0/ICloseHandle.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+using android::hardware::audio::common::V6_0::AudioUsage;
+
+namespace android::hardware::automotive::audiocontrol::V2_0::implementation {
+
+class AudioControl : public IAudioControl {
+ public:
+ // Methods from ::android::hardware::automotive::audiocontrol::V2_0::IAudioControl follow.
+ Return<sp<ICloseHandle>> registerFocusListener(const sp<IFocusListener>& listener);
+ Return<void> onAudioFocusChange(hidl_bitfield<AudioUsage> usage, int zoneId,
+ hidl_bitfield<AudioFocusChange> focusChange);
+ Return<void> setBalanceTowardRight(float value) override;
+ Return<void> setFadeTowardFront(float value) override;
+
+ // Implementation details
+ AudioControl();
+
+ private:
+ sp<IFocusListener> mFocusListener;
+ static bool isValidValue(float value) { return (value > 1.0f) || (value < -1.0f); }
+};
+
+} // namespace android::hardware::automotive::audiocontrol::V2_0::implementation
+
+#endif // ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_V2_0_AUDIOCONTROL_H
diff --git a/automotive/audiocontrol/2.0/default/CloseHandle.cpp b/automotive/audiocontrol/2.0/default/CloseHandle.cpp
new file mode 100644
index 0000000..bc47931
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/CloseHandle.cpp
@@ -0,0 +1,35 @@
+/*
+ * 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.
+ */
+
+#include "CloseHandle.h"
+
+namespace android::hardware::automotive::audiocontrol::V2_0::implementation {
+
+CloseHandle::CloseHandle(Callback callback) : mCallback(callback) {}
+
+CloseHandle::~CloseHandle() {
+ close();
+}
+
+Return<void> CloseHandle::close() {
+ const auto wasClosed = mIsClosed.exchange(true);
+ if (wasClosed) return {};
+
+ if (mCallback) mCallback();
+ return {};
+}
+
+} // namespace android::hardware::automotive::audiocontrol::V2_0::implementation
diff --git a/automotive/audiocontrol/2.0/default/CloseHandle.h b/automotive/audiocontrol/2.0/default/CloseHandle.h
new file mode 100644
index 0000000..6caf0bf
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/CloseHandle.h
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <android/hardware/automotive/audiocontrol/2.0/ICloseHandle.h>
+
+namespace android::hardware::automotive::audiocontrol::V2_0::implementation {
+
+/** Generic ICloseHandle implementation ignoring double-close events. */
+class CloseHandle : public ICloseHandle {
+ public:
+ using Callback = std::function<void()>;
+
+ /**
+ * Create a handle with a callback.
+ *
+ * The callback is guaranteed to be called exactly once.
+ *
+ * \param callback Called on the first close() call, or on destruction of the handle
+ */
+ CloseHandle(Callback callback = nullptr);
+ virtual ~CloseHandle();
+
+ Return<void> close() override;
+
+ private:
+ const Callback mCallback;
+ std::atomic<bool> mIsClosed = false;
+
+ DISALLOW_COPY_AND_ASSIGN(CloseHandle);
+};
+
+} // namespace android::hardware::automotive::audiocontrol::V2_0::implementation
diff --git a/automotive/audiocontrol/2.0/default/android.hardware.automotive.audiocontrol@2.0-service.rc b/automotive/audiocontrol/2.0/default/android.hardware.automotive.audiocontrol@2.0-service.rc
new file mode 100644
index 0000000..81c9be4
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/android.hardware.automotive.audiocontrol@2.0-service.rc
@@ -0,0 +1,4 @@
+service vendor.audiocontrol-hal-2.0 /vendor/bin/hw/android.hardware.automotive.audiocontrol@2.0-service
+ class hal
+ user audioserver
+ group system
diff --git a/automotive/audiocontrol/2.0/default/audiocontrol2_manifest.xml b/automotive/audiocontrol/2.0/default/audiocontrol2_manifest.xml
new file mode 100644
index 0000000..42d23ed
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/audiocontrol2_manifest.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+ <hal format="hidl">
+ <name>android.hardware.automotive.audiocontrol</name>
+ <transport>hwbinder</transport>
+ <version>2.0</version>
+ <interface>
+ <name>IAudioControl</name>
+ <instance>default</instance>
+ </interface>
+ </hal>
+</manifest>
\ No newline at end of file
diff --git a/automotive/audiocontrol/2.0/default/service.cpp b/automotive/audiocontrol/2.0/default/service.cpp
new file mode 100644
index 0000000..dcc46c3
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/service.cpp
@@ -0,0 +1,52 @@
+/*
+ * 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.
+ */
+#include <unistd.h>
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include "AudioControl.h"
+
+// libhidl:
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+// Generated HIDL files
+using android::hardware::automotive::audiocontrol::V2_0::IAudioControl;
+
+// The namespace in which all our implementation code lives
+using namespace android::hardware::automotive::audiocontrol::V2_0::implementation;
+using namespace android;
+
+// Main service entry point
+int main() {
+ // Create an instance of our service class
+ android::sp<IAudioControl> service = new AudioControl();
+ configureRpcThreadpool(1, true /*callerWillJoin*/);
+
+ if (service->registerAsService() != OK) {
+ LOG(ERROR) << "registerAsService failed";
+ return 1;
+ }
+
+ // Join (forever) the thread pool we created for the service above
+ joinRpcThreadpool();
+
+ // We don't ever actually expect to return, so return an error if we do get here
+ return 2;
+}
\ No newline at end of file