62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
// Copyright (C) 2021 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "AudioProxyImpl.h"
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#include <android-base/logging.h>
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#include "AudioProxyError.h"
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namespace audio_proxy::service {
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AudioProxyImpl::AudioProxyImpl()
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: mDeathRecipient(
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AIBinder_DeathRecipient_new(AudioProxyImpl::onStreamProviderDied)) {}
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ndk::ScopedAStatus AudioProxyImpl::start(
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const std::shared_ptr<IStreamProvider>& provider) {
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if (mBusStreamProvider.getStreamProvider()) {
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LOG(ERROR) << "Service is already started.";
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return ndk::ScopedAStatus::fromServiceSpecificError(
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ERROR_STREAM_PROVIDER_EXIST);
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}
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binder_status_t binder_status = AIBinder_linkToDeath(
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provider->asBinder().get(), mDeathRecipient.get(), this);
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if (binder_status != STATUS_OK) {
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LOG(ERROR) << "Failed to linkToDeath " << static_cast<int>(binder_status);
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return ndk::ScopedAStatus::fromServiceSpecificError(ERROR_AIDL_FAILURE);
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}
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mBusStreamProvider.setStreamProvider(provider);
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return ndk::ScopedAStatus::ok();
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}
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BusStreamProvider& AudioProxyImpl::getBusStreamProvider() {
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return mBusStreamProvider;
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}
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void AudioProxyImpl::resetStreamProvider() {
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mBusStreamProvider.setStreamProvider(nullptr);
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}
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void AudioProxyImpl::onStreamProviderDied(void* cookie) {
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// AudioProxyImpl lives longer than the death handler. The reinterpret_cast
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// here is safe.
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auto* audioProxy = reinterpret_cast<AudioProxyImpl*>(cookie);
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audioProxy->resetStreamProvider();
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}
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} // namespace audio_proxy::service
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