1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <utils/RefBase.h> 20 #include <media/AudioPolicy.h> 21 #include <utils/KeyedVector.h> 22 #include <hardware/audio.h> 23 #include <utils/String8.h> 24 25 namespace android { 26 27 class SwAudioOutputDescriptor; 28 29 /** 30 * custom mix entry in mPolicyMixes 31 */ 32 class AudioPolicyMix : public RefBase { 33 public: AudioPolicyMix()34 AudioPolicyMix() {} 35 36 const sp<SwAudioOutputDescriptor> &getOutput() const; 37 38 void setOutput(sp<SwAudioOutputDescriptor> &output); 39 40 void clearOutput(); 41 42 android::AudioMix *getMix(); 43 44 void setMix(AudioMix &mix); 45 46 private: 47 AudioMix mMix; // Audio policy mix descriptor 48 sp<SwAudioOutputDescriptor> mOutput; // Corresponding output stream 49 }; 50 51 52 class AudioPolicyMixCollection : public DefaultKeyedVector<String8, sp<AudioPolicyMix> > 53 { 54 public: 55 status_t getAudioPolicyMix(String8 address, sp<AudioPolicyMix> &policyMix) const; 56 57 status_t registerMix(String8 address, AudioMix mix, sp<SwAudioOutputDescriptor> desc); 58 59 status_t unregisterMix(String8 address); 60 61 void closeOutput(sp<SwAudioOutputDescriptor> &desc); 62 63 /** 64 * Try to find an output descriptor for the given attributes. 65 * 66 * @param[in] attributes to consider fowr the research of output descriptor. 67 * @param[out] desc to return if an output could be found. 68 * 69 * @return NO_ERROR if an output was found for the given attribute (in this case, the 70 * descriptor output param is initialized), error code otherwise. 71 */ 72 status_t getOutputForAttr(audio_attributes_t attributes, uid_t uid, 73 sp<SwAudioOutputDescriptor> &desc); 74 75 audio_devices_t getDeviceAndMixForInputSource(audio_source_t inputSource, 76 audio_devices_t availableDeviceTypes, 77 AudioMix **policyMix); 78 79 status_t getInputMixForAttr(audio_attributes_t attr, AudioMix **policyMix); 80 }; 81 82 }; // namespace android 83