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62 lines
2.1 KiB
62 lines
2.1 KiB
4 months ago
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/*
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* Copyright (C) 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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#ifndef ANDROID_AUDIO_MMAP_STREAM_CALLBACK_H
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#define ANDROID_AUDIO_MMAP_STREAM_CALLBACK_H
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#include <system/audio.h>
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#include <utils/Errors.h>
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#include <utils/RefBase.h>
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namespace android {
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class MmapStreamCallback : public virtual RefBase {
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public:
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/**
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* The mmap stream should be torn down because conditions that permitted its creation with
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* the requested parameters have changed and do not allow it to operate with the requested
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* constraints any more.
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* \param[in] handle handle for the client stream to tear down.
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*/
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virtual void onTearDown(audio_port_handle_t handle) = 0;
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/**
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* The volume to be applied to the use case specified when opening the stream has changed
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* \param[in] channels a channel mask containing all channels the volume should be applied to.
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* \param[in] values the volume values to be applied to each channel. The size of the vector
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* should correspond to the channel count retrieved with
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* audio_channel_count_from_in_mask() or audio_channel_count_from_out_mask()
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*/
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virtual void onVolumeChanged(audio_channel_mask_t channels, Vector<float> values) = 0;
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/**
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* The device the stream is routed to/from has changed
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* \param[in] onRoutingChanged the unique device ID of the new device.
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*/
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virtual void onRoutingChanged(audio_port_handle_t deviceId) = 0;
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protected:
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MmapStreamCallback() {}
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virtual ~MmapStreamCallback() {}
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};
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} // namespace android
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#endif // ANDROID_AUDIO_MMAP_STREAM_CALLBACK_H
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