/* * Copyright (C) 2009 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. */ #include #include #include #include #include #include namespace android { // ---------------------------------------------------------------------------- #define MAX_DEVICE_ADDRESS_LEN 20 #define NUM_TEST_OUTPUTS 5 class AudioPolicyManagerGeneric: public AudioPolicyInterface #ifdef AUDIO_POLICY_TEST , public Thread #endif //AUDIO_POLICY_TEST { public: AudioPolicyManagerGeneric(AudioPolicyClientInterface *clientInterface); virtual ~AudioPolicyManagerGeneric(); // AudioPolicyInterface virtual status_t setDeviceConnectionState(AudioSystem::audio_devices device, AudioSystem::device_connection_state state, const char *device_address); virtual AudioSystem::device_connection_state getDeviceConnectionState(AudioSystem::audio_devices device, const char *device_address); virtual void setPhoneState(int state); virtual void setRingerMode(uint32_t mode, uint32_t mask); virtual void setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config); virtual AudioSystem::forced_config getForceUse(AudioSystem::force_use usage); virtual void setSystemProperty(const char* property, const char* value); virtual audio_io_handle_t getOutput(AudioSystem::stream_type stream, uint32_t samplingRate, uint32_t format, uint32_t channels, AudioSystem::output_flags flags); virtual status_t startOutput(audio_io_handle_t output, AudioSystem::stream_type stream); virtual status_t stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream); virtual void releaseOutput(audio_io_handle_t output); virtual audio_io_handle_t getInput(int inputSource, uint32_t samplingRate, uint32_t format, uint32_t channels, AudioSystem::audio_in_acoustics acoustics); // indicates to the audio policy manager that the input starts being used. virtual status_t startInput(audio_io_handle_t input); // indicates to the audio policy manager that the input stops being used. virtual status_t stopInput(audio_io_handle_t input); virtual void releaseInput(audio_io_handle_t input); virtual void initStreamVolume(AudioSystem::stream_type stream, int indexMin, int indexMax); virtual status_t setStreamVolumeIndex(AudioSystem::stream_type stream, int index); virtual status_t getStreamVolumeIndex(AudioSystem::stream_type stream, int *index); private: enum routing_strategy { STRATEGY_MEDIA, STRATEGY_PHONE, STRATEGY_SONIFICATION, STRATEGY_DTMF, NUM_STRATEGIES }; // descriptor for audio outputs. Used to maintain current configuration of each opened audio output // and keep track of the usage of this output by each audio stream type. class AudioOutputDescriptor { public: AudioOutputDescriptor(); uint32_t device(); void changeRefCount(AudioSystem::stream_type, int delta); bool isUsedByStream(AudioSystem::stream_type stream) { return mRefCount[stream] > 0 ? true : false; } uint32_t refCount(); uint32_t mSamplingRate; // uint32_t mFormat; // uint32_t mChannels; // output configuration uint32_t mLatency; // AudioSystem::output_flags mFlags; // uint32_t mDevice; // current device this output is routed to uint32_t mRefCount[AudioSystem::NUM_STREAM_TYPES]; // number of streams of each type using this output }; // descriptor for audio inputs. Used to maintain current configuration of each opened audio input // and keep track of the usage of this input. class AudioInputDescriptor { public: AudioInputDescriptor(); uint32_t mSamplingRate; // uint32_t mFormat; // input configuration uint32_t mChannels; // AudioSystem::audio_in_acoustics mAcoustics; // uint32_t mDevice; // current device this input is routed to uint32_t mRefCount; // number of AudioRecord clients using this output }; // stream descriptor used for volume control class StreamDescriptor { public: StreamDescriptor() : mIndexMin(0), mIndexMax(1), mIndexCur(1), mMuteCount(0), mCanBeMuted(true) {} int mIndexMin; // min volume index int mIndexMax; // max volume index int mIndexCur; // current volume index int mMuteCount; // mute request counter bool mCanBeMuted; // true is the stream can be muted }; // return the strategy corresponding to a given stream type static routing_strategy getStrategy(AudioSystem::stream_type stream); // return the output handle of an output routed to the specified device, 0 if no output // is routed to the device float computeVolume(int stream, int index, uint32_t device); // Mute or unmute the stream on the specified output void setStreamMute(int stream, bool on, audio_io_handle_t output); // handle special cases for sonification strategy while in call: mute streams or replace by // a special tone in the device used for communication void handleIncallSonification(int stream, bool starting); #ifdef AUDIO_POLICY_TEST virtual bool threadLoop(); void exit(); int testOutputIndex(audio_io_handle_t output); #endif //AUDIO_POLICY_TEST AudioPolicyClientInterface *mpClientInterface; // audio policy client interface audio_io_handle_t mHardwareOutput; // hardware output handler KeyedVector mOutputs; // list ot output descritors KeyedVector mInputs; // list of input descriptors uint32_t mAvailableOutputDevices; // bit field of all available output devices uint32_t mAvailableInputDevices; // bit field of all available input devices int mPhoneState; // current phone state uint32_t mRingerMode; // current ringer mode AudioSystem::forced_config mForceUse[AudioSystem::NUM_FORCE_USE]; // current forced use configuration StreamDescriptor mStreams[AudioSystem::NUM_STREAM_TYPES]; // stream descriptors for volume control #ifdef AUDIO_POLICY_TEST Mutex mLock; Condition mWaitWorkCV; int mCurOutput; bool mDirectOutput; audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS]; int mTestInput; uint32_t mTestDevice; uint32_t mTestSamplingRate; uint32_t mTestFormat; uint32_t mTestChannelcount; uint32_t mTestLatencyMs; #endif //AUDIO_POLICY_TEST }; };