media/libmediametrics/include/MediaMetricsConstants.h - third_party/android/platform/frameworks/av - Git at Google

 /*
  * Copyright (C) 2020 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_MEDIA_MEDIAMETRICSCONSTANTS_H
 #define ANDROID_MEDIA_MEDIAMETRICSCONSTANTS_H

 /*
  * MediaMetrics Keys and Properties.
  *
  * C/C++ friendly constants that ensure
  * 1) Compilation error on misspelling
  * 2) Consistent behavior and documentation.
  */

 /*
  * Taxonomy of audio keys
  *
  * To build longer keys, we use compiler string concatenation of
  * adjacent string literals.  This is done in the translation phase
  * of compilation to make a single string token.
  */

 // Key Prefixes are used for MediaMetrics Item Keys and ends with a ".".
 // They must be appended with another value to make a key.
 #define AMEDIAMETRICS_KEY_PREFIX_AUDIO "audio."

 // Device related key prefix.
 #define AMEDIAMETRICS_KEY_PREFIX_AUDIO_DEVICE  AMEDIAMETRICS_KEY_PREFIX_AUDIO "device."

 // The AudioMmap key appends the "trackId" to the prefix.
 // This is the AudioFlinger equivalent of the AAudio Stream.
 // TODO: unify with AMEDIAMETRICS_KEY_PREFIX_AUDIO_STREAM
 #define AMEDIAMETRICS_KEY_PREFIX_AUDIO_MMAP  AMEDIAMETRICS_KEY_PREFIX_AUDIO "mmap."

 // The AudioRecord key appends the "trackId" to the prefix.
 #define AMEDIAMETRICS_KEY_PREFIX_AUDIO_RECORD AMEDIAMETRICS_KEY_PREFIX_AUDIO "record."

 // The AudioStream key appends the "streamId" to the prefix.
 #define AMEDIAMETRICS_KEY_PREFIX_AUDIO_STREAM  AMEDIAMETRICS_KEY_PREFIX_AUDIO "stream."

 // The AudioThread key appends the "threadId" to the prefix.
 #define AMEDIAMETRICS_KEY_PREFIX_AUDIO_THREAD AMEDIAMETRICS_KEY_PREFIX_AUDIO "thread."

 // The AudioTrack key appends the "trackId" to the prefix.
 #define AMEDIAMETRICS_KEY_PREFIX_AUDIO_TRACK  AMEDIAMETRICS_KEY_PREFIX_AUDIO "track."

 // Keys are strings used for MediaMetrics Item Keys
 #define AMEDIAMETRICS_KEY_AUDIO_FLINGER       AMEDIAMETRICS_KEY_PREFIX_AUDIO "flinger"
 #define AMEDIAMETRICS_KEY_AUDIO_POLICY        AMEDIAMETRICS_KEY_PREFIX_AUDIO "policy"

 /*
  * MediaMetrics Properties are unified space for consistency and readability.
  */

 // Property prefixes may be applied before a property name to indicate a specific
 // category to which it is associated.
 #define AMEDIAMETRICS_PROP_PREFIX_EFFECTIVE "effective."
 #define AMEDIAMETRICS_PROP_PREFIX_HAL       "hal."
 #define AMEDIAMETRICS_PROP_PREFIX_HAPTIC    "haptic."
 #define AMEDIAMETRICS_PROP_PREFIX_SERVER    "server."

 // Properties within mediametrics are string constants denoted by
 // a macro name beginning with AMEDIAMETRICS_PROP_*
 //
 // For a property name like "auxEffectId" we write this as a single upper case word
 // at the end of the macro name, such as AMEDIAMETRICS_PROP_AUXEFFECTID.
 //
 // Underscores after the AMEDIAMETRICS_PROP_* prefix indicate
 // a "dot" in the property name. For example AMEDIAMETRICS_PROP_VOLUME_LEFT
 // corresponds to "volume.left".
 //
 // The property names are camel case, typically a lowercase letter [a-z]
 // followed by one or more characters in the range [a-zA-Z0-9_.].
 // Special symbols such as !@#$%^&*()[]{}<>,:;'"\/?|+-=~ are reserved.
 //
 // Properties within this header should include special suffixes like '#'
 // directly in the string for brevity.  Code outside of this header should
 // use the macro constant for the special symbols for searchability.

 // Any property that ends with a # will have duplicate values listed instead
 // of suppressed in the Time Machine.
 #define AMEDIAMETRICS_PROP_SUFFIX_CHAR_DUPLICATES_ALLOWED '#'

 #define AMEDIAMETRICS_PROP_ALLOWUID       "_allowUid"      // int32_t, allow client uid to post
 #define AMEDIAMETRICS_PROP_AUDIOMODE      "audioMode"      // string (audio.flinger)
 #define AMEDIAMETRICS_PROP_AUXEFFECTID    "auxEffectId"    // int32 (AudioTrack)
 #define AMEDIAMETRICS_PROP_BUFFERSIZEFRAMES "bufferSizeFrames" // int32
 #define AMEDIAMETRICS_PROP_BUFFERCAPACITYFRAMES "bufferCapacityFrames" // int32
 #define AMEDIAMETRICS_PROP_BURSTFRAMES    "burstFrames"    // int32
 #define AMEDIAMETRICS_PROP_CALLERNAME     "callerName"     // string, eg. "aaudio"
 #define AMEDIAMETRICS_PROP_CHANNELCOUNT   "channelCount"   // int32
 #define AMEDIAMETRICS_PROP_CHANNELMASK    "channelMask"    // int32
 #define AMEDIAMETRICS_PROP_CONTENTTYPE    "contentType"    // string attributes (AudioTrack)
 #define AMEDIAMETRICS_PROP_CUMULATIVETIMENS "cumulativeTimeNs" // int64_t playback/record time
                                                            // since start
 // DEVICE values are averaged since starting on device
 #define AMEDIAMETRICS_PROP_DEVICELATENCYMS "deviceLatencyMs" // double - avg latency time
 #define AMEDIAMETRICS_PROP_DEVICESTARTUPMS "deviceStartupMs" // double - avg startup time
 #define AMEDIAMETRICS_PROP_DEVICETIMENS   "deviceTimeNs"   // int64_t playback/record time
 #define AMEDIAMETRICS_PROP_DEVICEVOLUME   "deviceVolume"   // double - average device volume

 #define AMEDIAMETRICS_PROP_DIRECTION      "direction"      // string AAudio input or output
 #define AMEDIAMETRICS_PROP_DURATIONNS     "durationNs"     // int64 duration time span
 #define AMEDIAMETRICS_PROP_ENCODING       "encoding"       // string value of format
 #define AMEDIAMETRICS_PROP_EVENT          "event#"         // string value (often func name)
 #define AMEDIAMETRICS_PROP_EXECUTIONTIMENS "executionTimeNs"  // time to execute the event

 // TODO: fix inconsistency in flags: AudioRecord / AudioTrack int32,  AudioThread string
 #define AMEDIAMETRICS_PROP_FLAGS          "flags"

 #define AMEDIAMETRICS_PROP_FRAMECOUNT     "frameCount"     // int32
 #define AMEDIAMETRICS_PROP_INPUTDEVICES   "inputDevices"   // string value
 #define AMEDIAMETRICS_PROP_INTERVALCOUNT  "intervalCount"  // int32
 #define AMEDIAMETRICS_PROP_LATENCYMS      "latencyMs"      // double value
 #define AMEDIAMETRICS_PROP_NAME           "name"           // string value
 #define AMEDIAMETRICS_PROP_ORIGINALFLAGS  "originalFlags"  // int32
 #define AMEDIAMETRICS_PROP_OUTPUTDEVICES  "outputDevices"  // string value
 #define AMEDIAMETRICS_PROP_PERFORMANCEMODE "performanceMode"    // string value, "none", lowLatency"
 #define AMEDIAMETRICS_PROP_PLAYBACK_PITCH "playback.pitch" // double value (AudioTrack)
 #define AMEDIAMETRICS_PROP_PLAYBACK_SPEED "playback.speed" // double value (AudioTrack)
 #define AMEDIAMETRICS_PROP_ROUTEDDEVICEID "routedDeviceId" // int32
 #define AMEDIAMETRICS_PROP_SAMPLERATE     "sampleRate"     // int32
 #define AMEDIAMETRICS_PROP_SELECTEDDEVICEID "selectedDeviceId" // int32
 #define AMEDIAMETRICS_PROP_SELECTEDMICDIRECTION "selectedMicDirection" // int32
 #define AMEDIAMETRICS_PROP_SELECTEDMICFIELDDIRECTION "selectedMicFieldDimension" // double
 #define AMEDIAMETRICS_PROP_SESSIONID      "sessionId"      // int32
 #define AMEDIAMETRICS_PROP_SHARINGMODE    "sharingMode"    // string value, "exclusive", shared"
 #define AMEDIAMETRICS_PROP_SOURCE         "source"         // string (AudioAttributes)
 #define AMEDIAMETRICS_PROP_STARTUPMS      "startupMs"      // double value
 // State is "ACTIVE" or "STOPPED" for AudioRecord
 #define AMEDIAMETRICS_PROP_STATE          "state"          // string
 #define AMEDIAMETRICS_PROP_STATUS         "status"         // int32 status_t
 #define AMEDIAMETRICS_PROP_STREAMTYPE     "streamType"     // string (AudioTrack)
 #define AMEDIAMETRICS_PROP_THREADID       "threadId"       // int32 value io handle
 #define AMEDIAMETRICS_PROP_THROTTLEMS     "throttleMs"     // double
 #define AMEDIAMETRICS_PROP_TRACKID        "trackId"        // int32 port id of track/record
 #define AMEDIAMETRICS_PROP_TRAITS         "traits"         // string
 #define AMEDIAMETRICS_PROP_TYPE           "type"           // string (thread type)
 #define AMEDIAMETRICS_PROP_UNDERRUN       "underrun"       // int32
 #define AMEDIAMETRICS_PROP_UNDERRUNFRAMES "underrunFrames" // int64_t from Thread
 #define AMEDIAMETRICS_PROP_USAGE          "usage"          // string attributes (ATrack)
 #define AMEDIAMETRICS_PROP_VOICEVOLUME    "voiceVolume"    // double (audio.flinger)
 #define AMEDIAMETRICS_PROP_VOLUME_LEFT    "volume.left"    // double (AudioTrack)
 #define AMEDIAMETRICS_PROP_VOLUME_RIGHT   "volume.right"   // double (AudioTrack)
 #define AMEDIAMETRICS_PROP_WHERE          "where"          // string value

 // Timing values: millisecond values are suffixed with MS and the type is double
 // nanosecond values are suffixed with NS and the type is int64.

 // Values are strings accepted for a given property.

 // An event is a general description, which often is a function name.
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_BEGINAUDIOINTERVALGROUP "beginAudioIntervalGroup"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_CLOSE      "close"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_CREATE     "create"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_CREATEAUDIOPATCH "createAudioPatch"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_CTOR       "ctor"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_DISCONNECT "disconnect"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_DTOR       "dtor"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_ENDAUDIOINTERVALGROUP "endAudioIntervalGroup"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_FLUSH      "flush"  // AudioTrack
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_INVALIDATE "invalidate" // server track, record
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_OPEN       "open"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_PAUSE      "pause"  // AudioTrack
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_READPARAMETERS "readParameters" // Thread
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_RELEASE    "release"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_RESTORE    "restore"
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_SETMODE    "setMode" // AudioFlinger
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_SETBUFFERSIZE    "setBufferSize" // AudioTrack
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_SETPLAYBACKPARAM "setPlaybackParam" // AudioTrack
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_SETVOICEVOLUME   "setVoiceVolume" // AudioFlinger
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_SETVOLUME  "setVolume"  // AudioTrack
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_START      "start"  // AudioTrack, AudioRecord
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_STOP       "stop"   // AudioTrack, AudioRecord
 #define AMEDIAMETRICS_PROP_EVENT_VALUE_UNDERRUN   "underrun" // from Thread

 // Possible values for AMEDIAMETRICS_PROP_CALLERNAME
 // Check within the framework for these strings as this header file may not be explicitly
 // included to avoid unnecessary cross-project dependencies.
 #define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_AAUDIO        "aaudio"         // Native AAudio
 #define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_JAVA          "java"           // Java API layer
 #define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_MEDIA         "media"          // libmedia
 #define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_OPENSLES      "opensles"       // Open SLES
 #define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_RTP           "rtp"            // RTP communication
 #define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_SOUNDPOOL     "soundpool"      // SoundPool
 #define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_TONEGENERATOR "tonegenerator"  // dial tones
 #define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_UNKNOWN       "unknown"        // callerName not set

 #endif // ANDROID_MEDIA_MEDIAMETRICSCONSTANTS_H
	/*
	* Copyright (C) 2020 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_MEDIA_MEDIAMETRICSCONSTANTS_H
	#define ANDROID_MEDIA_MEDIAMETRICSCONSTANTS_H

	/*
	* MediaMetrics Keys and Properties.
	*
	* C/C++ friendly constants that ensure
	* 1) Compilation error on misspelling
	* 2) Consistent behavior and documentation.
	*/

	/*
	* Taxonomy of audio keys
	*
	* To build longer keys, we use compiler string concatenation of
	* adjacent string literals. This is done in the translation phase
	* of compilation to make a single string token.
	*/

	// Key Prefixes are used for MediaMetrics Item Keys and ends with a ".".
	// They must be appended with another value to make a key.
	#define AMEDIAMETRICS_KEY_PREFIX_AUDIO "audio."

	// Device related key prefix.
	#define AMEDIAMETRICS_KEY_PREFIX_AUDIO_DEVICE AMEDIAMETRICS_KEY_PREFIX_AUDIO "device."

	// The AudioMmap key appends the "trackId" to the prefix.
	// This is the AudioFlinger equivalent of the AAudio Stream.
	// TODO: unify with AMEDIAMETRICS_KEY_PREFIX_AUDIO_STREAM
	#define AMEDIAMETRICS_KEY_PREFIX_AUDIO_MMAP AMEDIAMETRICS_KEY_PREFIX_AUDIO "mmap."

	// The AudioRecord key appends the "trackId" to the prefix.
	#define AMEDIAMETRICS_KEY_PREFIX_AUDIO_RECORD AMEDIAMETRICS_KEY_PREFIX_AUDIO "record."

	// The AudioStream key appends the "streamId" to the prefix.
	#define AMEDIAMETRICS_KEY_PREFIX_AUDIO_STREAM AMEDIAMETRICS_KEY_PREFIX_AUDIO "stream."

	// The AudioThread key appends the "threadId" to the prefix.
	#define AMEDIAMETRICS_KEY_PREFIX_AUDIO_THREAD AMEDIAMETRICS_KEY_PREFIX_AUDIO "thread."

	// The AudioTrack key appends the "trackId" to the prefix.
	#define AMEDIAMETRICS_KEY_PREFIX_AUDIO_TRACK AMEDIAMETRICS_KEY_PREFIX_AUDIO "track."

	// Keys are strings used for MediaMetrics Item Keys
	#define AMEDIAMETRICS_KEY_AUDIO_FLINGER AMEDIAMETRICS_KEY_PREFIX_AUDIO "flinger"
	#define AMEDIAMETRICS_KEY_AUDIO_POLICY AMEDIAMETRICS_KEY_PREFIX_AUDIO "policy"

	/*
	* MediaMetrics Properties are unified space for consistency and readability.
	*/

	// Property prefixes may be applied before a property name to indicate a specific
	// category to which it is associated.
	#define AMEDIAMETRICS_PROP_PREFIX_EFFECTIVE "effective."
	#define AMEDIAMETRICS_PROP_PREFIX_HAL "hal."
	#define AMEDIAMETRICS_PROP_PREFIX_HAPTIC "haptic."
	#define AMEDIAMETRICS_PROP_PREFIX_SERVER "server."

	// Properties within mediametrics are string constants denoted by
	// a macro name beginning with AMEDIAMETRICS_PROP_*
	//
	// For a property name like "auxEffectId" we write this as a single upper case word
	// at the end of the macro name, such as AMEDIAMETRICS_PROP_AUXEFFECTID.
	//
	// Underscores after the AMEDIAMETRICS_PROP_* prefix indicate
	// a "dot" in the property name. For example AMEDIAMETRICS_PROP_VOLUME_LEFT
	// corresponds to "volume.left".
	//
	// The property names are camel case, typically a lowercase letter [a-z]
	// followed by one or more characters in the range [a-zA-Z0-9_.].
	// Special symbols such as !@#$%^&*()[]{}<>,:;'"\/?\|+-=~ are reserved.
	//
	// Properties within this header should include special suffixes like '#'
	// directly in the string for brevity. Code outside of this header should
	// use the macro constant for the special symbols for searchability.

	// Any property that ends with a # will have duplicate values listed instead
	// of suppressed in the Time Machine.
	#define AMEDIAMETRICS_PROP_SUFFIX_CHAR_DUPLICATES_ALLOWED '#'

	#define AMEDIAMETRICS_PROP_ALLOWUID "_allowUid" // int32_t, allow client uid to post
	#define AMEDIAMETRICS_PROP_AUDIOMODE "audioMode" // string (audio.flinger)
	#define AMEDIAMETRICS_PROP_AUXEFFECTID "auxEffectId" // int32 (AudioTrack)
	#define AMEDIAMETRICS_PROP_BUFFERSIZEFRAMES "bufferSizeFrames" // int32
	#define AMEDIAMETRICS_PROP_BUFFERCAPACITYFRAMES "bufferCapacityFrames" // int32
	#define AMEDIAMETRICS_PROP_BURSTFRAMES "burstFrames" // int32
	#define AMEDIAMETRICS_PROP_CALLERNAME "callerName" // string, eg. "aaudio"
	#define AMEDIAMETRICS_PROP_CHANNELCOUNT "channelCount" // int32
	#define AMEDIAMETRICS_PROP_CHANNELMASK "channelMask" // int32
	#define AMEDIAMETRICS_PROP_CONTENTTYPE "contentType" // string attributes (AudioTrack)
	#define AMEDIAMETRICS_PROP_CUMULATIVETIMENS "cumulativeTimeNs" // int64_t playback/record time
	// since start
	// DEVICE values are averaged since starting on device
	#define AMEDIAMETRICS_PROP_DEVICELATENCYMS "deviceLatencyMs" // double - avg latency time
	#define AMEDIAMETRICS_PROP_DEVICESTARTUPMS "deviceStartupMs" // double - avg startup time
	#define AMEDIAMETRICS_PROP_DEVICETIMENS "deviceTimeNs" // int64_t playback/record time
	#define AMEDIAMETRICS_PROP_DEVICEVOLUME "deviceVolume" // double - average device volume

	#define AMEDIAMETRICS_PROP_DIRECTION "direction" // string AAudio input or output
	#define AMEDIAMETRICS_PROP_DURATIONNS "durationNs" // int64 duration time span
	#define AMEDIAMETRICS_PROP_ENCODING "encoding" // string value of format
	#define AMEDIAMETRICS_PROP_EVENT "event#" // string value (often func name)
	#define AMEDIAMETRICS_PROP_EXECUTIONTIMENS "executionTimeNs" // time to execute the event

	// TODO: fix inconsistency in flags: AudioRecord / AudioTrack int32, AudioThread string
	#define AMEDIAMETRICS_PROP_FLAGS "flags"

	#define AMEDIAMETRICS_PROP_FRAMECOUNT "frameCount" // int32
	#define AMEDIAMETRICS_PROP_INPUTDEVICES "inputDevices" // string value
	#define AMEDIAMETRICS_PROP_INTERVALCOUNT "intervalCount" // int32
	#define AMEDIAMETRICS_PROP_LATENCYMS "latencyMs" // double value
	#define AMEDIAMETRICS_PROP_NAME "name" // string value
	#define AMEDIAMETRICS_PROP_ORIGINALFLAGS "originalFlags" // int32
	#define AMEDIAMETRICS_PROP_OUTPUTDEVICES "outputDevices" // string value
	#define AMEDIAMETRICS_PROP_PERFORMANCEMODE "performanceMode" // string value, "none", lowLatency"
	#define AMEDIAMETRICS_PROP_PLAYBACK_PITCH "playback.pitch" // double value (AudioTrack)
	#define AMEDIAMETRICS_PROP_PLAYBACK_SPEED "playback.speed" // double value (AudioTrack)
	#define AMEDIAMETRICS_PROP_ROUTEDDEVICEID "routedDeviceId" // int32
	#define AMEDIAMETRICS_PROP_SAMPLERATE "sampleRate" // int32
	#define AMEDIAMETRICS_PROP_SELECTEDDEVICEID "selectedDeviceId" // int32
	#define AMEDIAMETRICS_PROP_SELECTEDMICDIRECTION "selectedMicDirection" // int32
	#define AMEDIAMETRICS_PROP_SELECTEDMICFIELDDIRECTION "selectedMicFieldDimension" // double
	#define AMEDIAMETRICS_PROP_SESSIONID "sessionId" // int32
	#define AMEDIAMETRICS_PROP_SHARINGMODE "sharingMode" // string value, "exclusive", shared"
	#define AMEDIAMETRICS_PROP_SOURCE "source" // string (AudioAttributes)
	#define AMEDIAMETRICS_PROP_STARTUPMS "startupMs" // double value
	// State is "ACTIVE" or "STOPPED" for AudioRecord
	#define AMEDIAMETRICS_PROP_STATE "state" // string
	#define AMEDIAMETRICS_PROP_STATUS "status" // int32 status_t
	#define AMEDIAMETRICS_PROP_STREAMTYPE "streamType" // string (AudioTrack)
	#define AMEDIAMETRICS_PROP_THREADID "threadId" // int32 value io handle
	#define AMEDIAMETRICS_PROP_THROTTLEMS "throttleMs" // double
	#define AMEDIAMETRICS_PROP_TRACKID "trackId" // int32 port id of track/record
	#define AMEDIAMETRICS_PROP_TRAITS "traits" // string
	#define AMEDIAMETRICS_PROP_TYPE "type" // string (thread type)
	#define AMEDIAMETRICS_PROP_UNDERRUN "underrun" // int32
	#define AMEDIAMETRICS_PROP_UNDERRUNFRAMES "underrunFrames" // int64_t from Thread
	#define AMEDIAMETRICS_PROP_USAGE "usage" // string attributes (ATrack)
	#define AMEDIAMETRICS_PROP_VOICEVOLUME "voiceVolume" // double (audio.flinger)
	#define AMEDIAMETRICS_PROP_VOLUME_LEFT "volume.left" // double (AudioTrack)
	#define AMEDIAMETRICS_PROP_VOLUME_RIGHT "volume.right" // double (AudioTrack)
	#define AMEDIAMETRICS_PROP_WHERE "where" // string value

	// Timing values: millisecond values are suffixed with MS and the type is double
	// nanosecond values are suffixed with NS and the type is int64.

	// Values are strings accepted for a given property.

	// An event is a general description, which often is a function name.
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_BEGINAUDIOINTERVALGROUP "beginAudioIntervalGroup"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_CLOSE "close"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_CREATE "create"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_CREATEAUDIOPATCH "createAudioPatch"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_CTOR "ctor"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_DISCONNECT "disconnect"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_DTOR "dtor"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_ENDAUDIOINTERVALGROUP "endAudioIntervalGroup"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_FLUSH "flush" // AudioTrack
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_INVALIDATE "invalidate" // server track, record
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_OPEN "open"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_PAUSE "pause" // AudioTrack
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_READPARAMETERS "readParameters" // Thread
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_RELEASE "release"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_RESTORE "restore"
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_SETMODE "setMode" // AudioFlinger
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_SETBUFFERSIZE "setBufferSize" // AudioTrack
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_SETPLAYBACKPARAM "setPlaybackParam" // AudioTrack
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_SETVOICEVOLUME "setVoiceVolume" // AudioFlinger
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_SETVOLUME "setVolume" // AudioTrack
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_START "start" // AudioTrack, AudioRecord
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_STOP "stop" // AudioTrack, AudioRecord
	#define AMEDIAMETRICS_PROP_EVENT_VALUE_UNDERRUN "underrun" // from Thread

	// Possible values for AMEDIAMETRICS_PROP_CALLERNAME
	// Check within the framework for these strings as this header file may not be explicitly
	// included to avoid unnecessary cross-project dependencies.
	#define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_AAUDIO "aaudio" // Native AAudio
	#define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_JAVA "java" // Java API layer
	#define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_MEDIA "media" // libmedia
	#define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_OPENSLES "opensles" // Open SLES
	#define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_RTP "rtp" // RTP communication
	#define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_SOUNDPOOL "soundpool" // SoundPool
	#define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_TONEGENERATOR "tonegenerator" // dial tones
	#define AMEDIAMETRICS_PROP_CALLERNAME_VALUE_UNKNOWN "unknown" // callerName not set

	#endif // ANDROID_MEDIA_MEDIAMETRICSCONSTANTS_H