AudioPolicy.h revision 25a9e5561a7f14e79b04f713a515a9464b9ea077
1/* 2 * Copyright (C) 2014 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 18#ifndef ANDROID_AUDIO_POLICY_H 19#define ANDROID_AUDIO_POLICY_H 20 21#include <system/audio.h> 22#include <system/audio_policy.h> 23#include <binder/Parcel.h> 24#include <utils/String8.h> 25#include <utils/Vector.h> 26 27namespace android { 28 29// Keep in sync with AudioMix.java, AudioMixingRule.java, AudioPolicyConfig.java 30#define RULE_EXCLUSION_MASK 0x8000 31#define RULE_MATCH_ATTRIBUTE_USAGE 0x1 32#define RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET (0x1 << 1) 33#define RULE_MATCH_UID (0x1 << 2) 34#define RULE_EXCLUDE_ATTRIBUTE_USAGE (RULE_EXCLUSION_MASK|RULE_MATCH_ATTRIBUTE_USAGE) 35#define RULE_EXCLUDE_ATTRIBUTE_CAPTURE_PRESET \ 36 (RULE_EXCLUSION_MASK|RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET) 37#define RULE_EXCLUDE_UID (RULE_EXCLUSION_MASK|RULE_MATCH_UID) 38 39#define MIX_TYPE_INVALID (-1) 40#define MIX_TYPE_PLAYERS 0 41#define MIX_TYPE_RECORDERS 1 42 43// definition of the different events that can be reported on a dynamic policy from 44// AudioSystem's implementation of the AudioPolicyClient interface 45// keep in sync with AudioSystem.java 46#define DYNAMIC_POLICY_EVENT_MIX_STATE_UPDATE 0 47 48#define MIX_STATE_DISABLED (-1) 49#define MIX_STATE_IDLE 0 50#define MIX_STATE_MIXING 1 51 52#define MIX_ROUTE_FLAG_RENDER 0x1 53#define MIX_ROUTE_FLAG_LOOP_BACK (0x1 << 1) 54#define MIX_ROUTE_FLAG_ALL (MIX_ROUTE_FLAG_RENDER | MIX_ROUTE_FLAG_LOOP_BACK) 55 56#define MAX_MIXES_PER_POLICY 10 57#define MAX_CRITERIA_PER_MIX 20 58 59class AudioMixMatchCriterion { 60public: 61 AudioMixMatchCriterion() {} 62 AudioMixMatchCriterion(audio_usage_t usage, audio_source_t source, uint32_t rule); 63 64 status_t readFromParcel(Parcel *parcel); 65 status_t writeToParcel(Parcel *parcel) const; 66 67 union { 68 audio_usage_t mUsage; 69 audio_source_t mSource; 70 uid_t mUid; 71 } mValue; 72 uint32_t mRule; 73}; 74 75class AudioMix { 76public: 77 // flag on an AudioMix indicating the activity on this mix (IDLE, MIXING) 78 // must be reported through the AudioPolicyClient interface 79 static const uint32_t kCbFlagNotifyActivity = 0x1; 80 81 AudioMix() {} 82 AudioMix(Vector<AudioMixMatchCriterion> criteria, uint32_t mixType, audio_config_t format, 83 uint32_t routeFlags, String8 registrationId, uint32_t flags) : 84 mCriteria(criteria), mMixType(mixType), mFormat(format), 85 mRouteFlags(routeFlags), mDeviceAddress(registrationId), mCbFlags(flags){} 86 87 status_t readFromParcel(Parcel *parcel); 88 status_t writeToParcel(Parcel *parcel) const; 89 90 Vector<AudioMixMatchCriterion> mCriteria; 91 uint32_t mMixType; 92 audio_config_t mFormat; 93 uint32_t mRouteFlags; 94 audio_devices_t mDeviceType; 95 String8 mDeviceAddress; 96 uint32_t mCbFlags; // flags indicating which callbacks to use, see kCbFlag* 97}; 98 99 100// definitions for audio recording configuration updates 101// which update type is reported 102#define RECORD_CONFIG_EVENT_NONE -1 103#define RECORD_CONFIG_EVENT_START 1 104#define RECORD_CONFIG_EVENT_STOP 0 105 106}; // namespace android 107 108#endif // ANDROID_AUDIO_POLICY_H 109