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 27 namespace 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_EXCLUDE_ATTRIBUTE_USAGE (RULE_EXCLUSION_MASK|RULE_MATCH_ATTRIBUTE_USAGE) 34 #define RULE_EXCLUDE_ATTRIBUTE_CAPTURE_PRESET \ 35 (RULE_EXCLUSION_MASK|RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET) 36 37 #define MIX_TYPE_INVALID -1 38 #define MIX_TYPE_PLAYERS 0 39 #define MIX_TYPE_RECORDERS 1 40 41 // definition of the different events that can be reported on a dynamic policy from 42 // AudioSystem's implementation of the AudioPolicyClient interface 43 // keep in sync with AudioSystem.java 44 #define DYNAMIC_POLICY_EVENT_MIX_STATE_UPDATE 0 45 46 #define MIX_STATE_DISABLED -1 47 #define MIX_STATE_IDLE 0 48 #define MIX_STATE_MIXING 1 49 50 #define MIX_ROUTE_FLAG_RENDER 0x1 51 #define MIX_ROUTE_FLAG_LOOP_BACK (0x1 << 1) 52 53 #define MAX_MIXES_PER_POLICY 10 54 #define MAX_CRITERIA_PER_MIX 20 55 56 class AttributeMatchCriterion { 57 public: AttributeMatchCriterion()58 AttributeMatchCriterion() {} 59 AttributeMatchCriterion(audio_usage_t usage, audio_source_t source, uint32_t rule); 60 61 status_t readFromParcel(Parcel *parcel); 62 status_t writeToParcel(Parcel *parcel) const; 63 64 union { 65 audio_usage_t mUsage; 66 audio_source_t mSource; 67 } mAttr; 68 uint32_t mRule; 69 }; 70 71 class AudioMix { 72 public: 73 // flag on an AudioMix indicating the activity on this mix (IDLE, MIXING) 74 // must be reported through the AudioPolicyClient interface 75 static const uint32_t kCbFlagNotifyActivity = 0x1; 76 AudioMix()77 AudioMix() {} AudioMix(Vector<AttributeMatchCriterion> criteria,uint32_t mixType,audio_config_t format,uint32_t routeFlags,String8 registrationId,uint32_t flags)78 AudioMix(Vector<AttributeMatchCriterion> criteria, uint32_t mixType, audio_config_t format, 79 uint32_t routeFlags, String8 registrationId, uint32_t flags) : 80 mCriteria(criteria), mMixType(mixType), mFormat(format), 81 mRouteFlags(routeFlags), mRegistrationId(registrationId), mCbFlags(flags){} 82 83 status_t readFromParcel(Parcel *parcel); 84 status_t writeToParcel(Parcel *parcel) const; 85 86 Vector<AttributeMatchCriterion> mCriteria; 87 uint32_t mMixType; 88 audio_config_t mFormat; 89 uint32_t mRouteFlags; 90 String8 mRegistrationId; 91 uint32_t mCbFlags; // flags indicating which callbacks to use, see kCbFlag* 92 }; 93 94 }; // namespace android 95 96 #endif // ANDROID_AUDIO_POLICY_H 97