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 #define ROUTE_FLAG_RENDER 0x1 42 #define ROUTE_FLAG_LOOP_BACK (0x1 << 1) 43 44 #define MAX_MIXES_PER_POLICY 10 45 #define MAX_CRITERIA_PER_MIX 20 46 47 class AttributeMatchCriterion { 48 public: AttributeMatchCriterion()49 AttributeMatchCriterion() {} 50 AttributeMatchCriterion(audio_usage_t usage, audio_source_t source, uint32_t rule); 51 52 status_t readFromParcel(Parcel *parcel); 53 status_t writeToParcel(Parcel *parcel) const; 54 55 union { 56 audio_usage_t mUsage; 57 audio_source_t mSource; 58 } mAttr; 59 uint32_t mRule; 60 }; 61 62 class AudioMix { 63 public: AudioMix()64 AudioMix() {} AudioMix(Vector<AttributeMatchCriterion> criteria,uint32_t mixType,audio_config_t format,uint32_t routeFlags,String8 registrationId)65 AudioMix(Vector<AttributeMatchCriterion> criteria, uint32_t mixType, audio_config_t format, 66 uint32_t routeFlags, String8 registrationId) : 67 mCriteria(criteria), mMixType(mixType), mFormat(format), 68 mRouteFlags(routeFlags), mRegistrationId(registrationId) {} 69 70 status_t readFromParcel(Parcel *parcel); 71 status_t writeToParcel(Parcel *parcel) const; 72 73 Vector<AttributeMatchCriterion> mCriteria; 74 uint32_t mMixType; 75 audio_config_t mFormat; 76 uint32_t mRouteFlags; 77 String8 mRegistrationId; 78 }; 79 80 }; // namespace android 81 82 #endif // ANDROID_AUDIO_POLICY_H 83