| /* |
| ** |
| ** Copyright 2014, 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_HARDWARE_INPUT_H |
| #define ANDROID_AUDIO_HARDWARE_INPUT_H |
| |
| #include <hardware/audio.h> |
| #include <system/audio.h> |
| #include <utils/Errors.h> |
| #include <utils/threads.h> |
| #include <utils/Vector.h> |
| |
| #include "AudioHotplugThread.h" |
| |
| namespace android { |
| |
| class AudioStreamIn; |
| |
| class AudioHardwareInput : public AudioHotplugThread::Callback { |
| public: |
| AudioHardwareInput(); |
| ~AudioHardwareInput(); |
| |
| status_t setMicMute(bool mute); |
| status_t getMicMute(bool* mute); |
| status_t getInputBufferSize(const audio_config* config); |
| |
| AudioStreamIn* openInputStream(uint32_t devices, |
| audio_format_t* format, |
| uint32_t* channelMask, |
| uint32_t* sampleRate, |
| status_t* status); |
| void closeInputStream(AudioStreamIn* in); |
| |
| status_t dump(int fd); |
| |
| // AudioHotplugThread callbacks |
| virtual void onDeviceFound(const AudioHotplugThread::DeviceInfo& devInfo); |
| virtual void onDeviceRemoved(unsigned int pcmCard, unsigned int pcmDevice); |
| |
| static size_t calculateInputBufferSize(uint32_t outputSampleRate, |
| audio_format_t format, |
| uint32_t channelCount); |
| |
| static const uint32_t kPeriodMsec; |
| |
| /** |
| * Decide which device to use for the given input. |
| */ |
| const AudioHotplugThread::DeviceInfo* getBestDevice(int inputSource); |
| |
| private: |
| static const int kMaxDevices = 8; // TODO review strategy for adding more devices |
| void closeAllInputStreams(); |
| // Place all input streams using the specified device into standby. If deviceInfo is NULL, |
| // all input streams are placed into standby. |
| void standbyAllInputStreams(const AudioHotplugThread::DeviceInfo* deviceInfo); |
| Mutex mLock; |
| bool mMicMute; |
| Vector<AudioStreamIn*> mInputStreams; |
| |
| sp<AudioHotplugThread> mHotplugThread; |
| |
| AudioHotplugThread::DeviceInfo mDeviceInfos[kMaxDevices]; |
| }; |
| |
| }; // namespace android |
| |
| #endif // ANDROID_AUDIO_HARDWARE_INPUT_H |