| /* |
| * Copyright (C) 2016 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_AUDIO_MMAP_STREAM_CALLBACK_H |
| #define ANDROID_AUDIO_MMAP_STREAM_CALLBACK_H |
| |
| #include <system/audio.h> |
| #include <utils/Errors.h> |
| #include <utils/RefBase.h> |
| |
| namespace android { |
| |
| |
| class MmapStreamCallback : public virtual RefBase { |
| public: |
| |
| /** |
| * The mmap stream should be torn down because conditions that permitted its creation with |
| * the requested parameters have changed and do not allow it to operate with the requested |
| * constraints any more. |
| * \param[in] handle handle for the client stream to tear down. |
| */ |
| virtual void onTearDown(audio_port_handle_t handle) = 0; |
| |
| /** |
| * The volume to be applied to the use case specified when opening the stream has changed |
| * \param[in] channels a channel mask containing all channels the volume should be applied to. |
| * \param[in] values the volume values to be applied to each channel. The size of the vector |
| * should correspond to the channel count retrieved with |
| * audio_channel_count_from_in_mask() or audio_channel_count_from_out_mask() |
| */ |
| virtual void onVolumeChanged(audio_channel_mask_t channels, Vector<float> values) = 0; |
| |
| /** |
| * The device the stream is routed to/from has changed |
| * \param[in] onRoutingChanged the unique device ID of the new device. |
| */ |
| virtual void onRoutingChanged(audio_port_handle_t deviceId) = 0; |
| |
| protected: |
| MmapStreamCallback() {} |
| virtual ~MmapStreamCallback() {} |
| }; |
| |
| |
| } // namespace android |
| |
| #endif // ANDROID_AUDIO_MMAP_STREAM_CALLBACK_H |