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80 lines
2.8 KiB
80 lines
2.8 KiB
// Copyright 2016 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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// |
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// Callback object to be passed to brilloaudioservice. |
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#ifndef BRILLO_AUDIO_AUDIOSERVICE_AUDIO_SERVICE_CALLBACK_H_ |
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#define BRILLO_AUDIO_AUDIOSERVICE_AUDIO_SERVICE_CALLBACK_H_ |
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#include <vector> |
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#include <base/callback.h> |
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#include <binder/Status.h> |
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#include "android/brillo/brilloaudioservice/BnAudioServiceCallback.h" |
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#include "include/brillo_audio_manager.h" |
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using android::binder::Status; |
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using android::brillo::brilloaudioservice::BnAudioServiceCallback; |
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namespace brillo { |
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class AudioServiceCallback : public BnAudioServiceCallback { |
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public: |
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// Constructor for AudioServiceCallback. |
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// |
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// |callback| is an object of type BAudioCallback. |
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// |user_data| is an object to be passed to the callbacks. |
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AudioServiceCallback(const BAudioCallback* callback, void* user_data); |
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// Callback function triggered when a device is connected. |
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// |
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// |devices| is a vector of audio_devices_t. |
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Status OnAudioDevicesConnected(const std::vector<int>& devices); |
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// Callback function triggered when a device is disconnected. |
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// |
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// |devices| is a vector of audio_devices_t. |
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Status OnAudioDevicesDisconnected(const std::vector<int>& devices); |
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// Callback function triggered when volume is changed. |
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// |
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// |stream| is an int representing the stream. |
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// |previous_index| is the volume index before the key press. |
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// |current_index| is the volume index after the key press. |
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Status OnVolumeChanged(int stream, int previous_index, int current_index); |
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// Method to compare two AudioServiceCallback objects. |
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// |
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// |callback| is a ref counted pointer to a AudioServiceCallback object to be |
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// compared with this. |
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// |
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// Returns true if |callback| equals this. |
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bool Equals(const android::sp<AudioServiceCallback>& callback); |
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private: |
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// Callback when devices are connected. |
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base::Callback<void(const BAudioDeviceInfo*, void*)> connected_callback_; |
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// Callback when devices are disconnected. |
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base::Callback<void(const BAudioDeviceInfo*, void*)> disconnected_callback_; |
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// Callback when the volume button is pressed. |
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base::Callback<void(BAudioUsage, int, int, void*)> volume_callback_; |
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// User data passed to the callbacks. |
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void* user_data_; |
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}; |
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} // namespace brillo |
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#endif // BRILLO_AUDIO_AUDIOSERVICE_AUDIO_SERVICE_CALLBACK_H_
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