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/*
* Copyright (C) 2014 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.
*/
#ifndef ANDROID_AUDIO_POLICY_H
#define ANDROID_AUDIO_POLICY_H
#include <system/audio.h>
#include <system/audio_policy.h>
#include <binder/Parcel.h>
#include <utils/String8.h>
#include <utils/Vector.h>
#include <media/AudioSession.h>
namespace android {
// Keep in sync with AudioMix.java, AudioMixingRule.java, AudioPolicyConfig.java
#define RULE_EXCLUSION_MASK 0x8000
#define RULE_MATCH_ATTRIBUTE_USAGE 0x1
#define RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET (0x1 << 1)
#define RULE_EXCLUDE_ATTRIBUTE_USAGE (RULE_EXCLUSION_MASK|RULE_MATCH_ATTRIBUTE_USAGE)
#define RULE_EXCLUDE_ATTRIBUTE_CAPTURE_PRESET \
(RULE_EXCLUSION_MASK|RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET)
#define MIX_TYPE_INVALID -1
#define MIX_TYPE_PLAYERS 0
#define MIX_TYPE_RECORDERS 1
// definition of the different events that can be reported on a dynamic policy from
// AudioSystem's implementation of the AudioPolicyClient interface
// keep in sync with AudioSystem.java
#define DYNAMIC_POLICY_EVENT_MIX_STATE_UPDATE 0
#define AUDIO_OUTPUT_SESSION_EFFECTS_UPDATE 10
#define MIX_STATE_DISABLED -1
#define MIX_STATE_IDLE 0
#define MIX_STATE_MIXING 1
#define MIX_ROUTE_FLAG_RENDER 0x1
#define MIX_ROUTE_FLAG_LOOP_BACK (0x1 << 1)
#define MAX_MIXES_PER_POLICY 10
#define MAX_CRITERIA_PER_MIX 20
class AttributeMatchCriterion {
public:
AttributeMatchCriterion() {}
AttributeMatchCriterion(audio_usage_t usage, audio_source_t source, uint32_t rule);
status_t readFromParcel(Parcel *parcel);
status_t writeToParcel(Parcel *parcel) const;
union {
audio_usage_t mUsage;
audio_source_t mSource;
} mAttr;
uint32_t mRule;
};
class AudioMix {
public:
// flag on an AudioMix indicating the activity on this mix (IDLE, MIXING)
// must be reported through the AudioPolicyClient interface
static const uint32_t kCbFlagNotifyActivity = 0x1;
AudioMix() {}
AudioMix(Vector<AttributeMatchCriterion> criteria, uint32_t mixType, audio_config_t format,
uint32_t routeFlags, String8 registrationId, uint32_t flags) :
mCriteria(criteria), mMixType(mixType), mFormat(format),
mRouteFlags(routeFlags), mRegistrationId(registrationId), mCbFlags(flags){}
status_t readFromParcel(Parcel *parcel);
status_t writeToParcel(Parcel *parcel) const;
Vector<AttributeMatchCriterion> mCriteria;
uint32_t mMixType;
audio_config_t mFormat;
uint32_t mRouteFlags;
String8 mRegistrationId;
uint32_t mCbFlags; // flags indicating which callbacks to use, see kCbFlag*
};
}; // namespace android
#endif // ANDROID_AUDIO_POLICY_H
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