Audio source that captures microphone input through the centralized AudioSessionManager's VPIO. More...

Instance Methods
(NSString *)	- label
	Gets the label/name of this audio source implementation. More...

(bool)	- useVoiceProcessingIO
	Legacy property - gets whether VPIO is in use. More...

(void)	- setUseVoiceProcessingIO:
	Legacy setter - has no effect (VPIO configuration managed by AudioSessionManager). More...

(bool)	- bypassVoiceProcessing
	Gets whether voice processing is bypassed. More...

(void)	- setBypassVoiceProcessing:
	Legacy setter - has no effect (bypass managed by AudioSessionManager). More...

(bool)	- voiceProcessingEnableAGC
	Gets whether Automatic Gain Control (AGC) is enabled. More...

(void)	- setVoiceProcessingEnableAGC:
	Legacy setter - has no effect (AGC managed by AudioSessionManager). More...

Instance Methods inherited from FMLiveSwitchAudioSource
(int)	- calculateDurationFloatWithDataLength:
	Calculates the duration of an audio chunk given its data length (the number of bytes) and assuming that the clock rate and channel count match the output format. More...

(int)	- calculateDurationWithDataLength:
	Calculates the duration of an audio chunk given its data length (the number of bytes) and assuming that the clock rate and channel count match the output format. More...

(FMLiveSwitchAudioConfig *)	- config
	Gets the output configuration. More...

(FMLiveSwitchIAudioInputCollection *)	- createInputCollectionWithOutput:
	Creates an input collection. More...

(bool)	- disableTimestampReset
	Gets whether the timestamp should be reset using the wall clock after timestampResetInterval milliseconds elapse between frames. More...

(bool)	- disableZeroPadding
	Gets whether to disable zero-padding for audio gaps. More...

(void)	- doDestroy
	Destroys this instance. More...

(bool)	- forceTimestampReset
	Gets whether the timestamp should be reset before the next frame is processed. More...

(int)	- frameDuration
	Gets the frame duration in milliseconds. More...

(instancetype)	- initWithOutputFormat:
	Initializes a new instance of the FMLiveSwitchAudioSource class. More...

(instancetype)	- initWithOutputFormat:frameDuration:
	Initializes a new instance of the FMLiveSwitchAudioSource class. More...

(void)	- raiseFrame:
	Raises a frame. More...

(void)	- setDisableTimestampReset:
	Sets whether the timestamp should be reset using the wall clock after timestampResetInterval milliseconds elapse between frames. More...

(void)	- setDisableZeroPadding:
	Sets whether to disable zero-padding for audio gaps. More...

(void)	- setForceTimestampReset:
	Sets whether the timestamp should be reset before the next frame is processed. More...

(void)	- setTimestampResetInterval:
	Sets the amount of time in milliseconds between audio frames that will trigger a reset of the timestamp to the wall clock. More...

(void)	- setVolume:
	Sets a value indicating the volume (output resistance) of this source. More...

(int)	- timestampResetInterval
	Gets the amount of time in milliseconds between audio frames that will trigger a reset of the timestamp to the wall clock. More...

(bool)	- trySetSystemTimestampWithFrame:
	Tries to set the system timestamp on an audio frame. More...

(bool)	- trySetTimestampWithFrame:
	Tries to set the timestamp on an audio frame. More...

(double)	- volume
	Gets a value indicating the volume (output resistance) of this source. More...

Instance Methods inherited from FMLiveSwitchMediaSource
(void)	- addOnDisabledChange:
	Adds a handler that is raised when the Disabled property changes state. More...

(void)	- addOnDisabledChangeWithCaller:
	Adds a handler that is raised when the Disabled property changes state. More...

(id)	- addOnDisabledChangeWithCallerWithBlock
	Adds a handler that is raised when the Disabled property changes state. More...

(void)	- addOnDisabledChangeWithCallerWithBlock:
	Adds a handler that is raised when the Disabled property changes state. More...

(void)	- addOnMuted:
	Adds a handler that is raised when the source is muted. More...

(void)	- addOnPausedChange:
	Adds a handler that is raised when the Paused property changes state. More...

(void)	- addOnProcessControlFrames:
	Adds a handler that is raised when control frames are processed. More...

(NSMutableArray *)	- addOnProcessControlFramesWithBlock
	Adds a handler that is raised when control frames are processed. More...

(void)	- addOnProcessControlFramesWithBlock:
	Adds a handler that is raised when control frames are processed. More...

(void)	- addOnProcessedControlFrames:
	Adds a handler that is raised when control frames have been processed. More...

(NSMutableArray *)	- addOnProcessedControlFramesWithBlock
	Adds a handler that is raised when control frames have been processed. More...

(void)	- addOnProcessedControlFramesWithBlock:
	Adds a handler that is raised when control frames have been processed. More...

(void)	- addOnRaiseControlFrameResponses:
	Adds a handler that is raised when control frame responses are raised. More...

(NSMutableArray *)	- addOnRaiseControlFrameResponsesWithBlock
	Adds a handler that is raised when control frame responses are raised. More...

(void)	- addOnRaiseControlFrameResponsesWithBlock:
	Adds a handler that is raised when control frame responses are raised. More...

(void)	- addOnRaisedControlFrameResponses:
	Adds a handler that is raised when control frame responses have been raised. More...

(NSMutableArray *)	- addOnRaisedControlFrameResponsesWithBlock
	Adds a handler that is raised when control frame responses have been raised. More...

(void)	- addOnRaisedControlFrameResponsesWithBlock:
	Adds a handler that is raised when control frame responses have been raised. More...

(void)	- addOnRaisedFrame:
	Adds a handler that is raised when a frame has been raised. More...

(TFrame)	- addOnRaisedFrameWithBlock
	Adds a handler that is raised when a frame has been raised. More...

(void)	- addOnRaisedFrameWithBlock:
	Adds a handler that is raised when a frame has been raised. More...

(void)	- addOnRaiseFrame:
	Adds a handler that is raised when a frame is being raised. More...

(TFrame)	- addOnRaiseFrameWithBlock
	Adds a handler that is raised when a frame is being raised. More...

(void)	- addOnRaiseFrameWithBlock:
	Adds a handler that is raised when a frame is being raised. More...

(void)	- addOnStateChange:
	Adds a handler that is raised when the state changes. More...

(TSource)	- addOnStateChangeWithBlock
	Adds a handler that is raised when the state changes. More...

(void)	- addOnStateChangeWithBlock:
	Adds a handler that is raised when the state changes. More...

(void)	- addOnUnmuted:
	Adds a handler that is raised when the source is unmuted. More...

(void)	- addOutput:
	Adds an output. More...

(void)	- addOutputs:
	Adds some outputs. More...

(bool)	- allowDiagnosticTimer
	Gets whether this media pipe is allowed to be timed. More...

(bool)	- allowOutputRateTimer
	Gets whether this media pipe output rate is allowed to be timed. More...

(bool)	- canChangeBitrate
	Gets whether this source can change the output bitrate. More...

(bool)	- canPauseBitrate
	Gets whether this source can pause the output bitrate. More...

(FMLiveSwitchFuture< id > *)	- changeInput:
	Changes the current input. More...

(NSString *)	- content
	Gets the content descriptor. More...

(TIInputCollection)	- createInputCollectionWithOutput:
	Creates an input collection. More...

(bool)	- deactivated
	Gets a value indicating whether this source is deactivated. More...

(bool)	- deactivatedByApplication
	Gets whether this source is deactivated because the application has requested it. More...

(bool)	- deactivatedByServer
	Gets whether this source is deactivated because the server has requested it. More...

(NSString *)	- description
	Returns a string that represents this instance. More...

(bool)	- destroy
	Destroys this instance. More...

(bool)	- disabled
	Gets a value indicating whether this source is disabled. More...

(void)	- doProcessControlFrames:
	Processes control frames. More...

(FMLiveSwitchError *)	- doProcessSdpMediaDescription:isOffer:isLocalDescription:
	Processes a local SDP media description. More...

(void)	- doProcessSourceStatsFromOutputWithSourceStats:
	Processes source stats from an output. More...

(void)	- doProcessTrackStatsFromOutputWithTrackStats:
	Processes track stats from an output. More...

(FMLiveSwitchFuture< id > *)	- doStart
	Starts this instance. More...

(FMLiveSwitchFuture< id > *)	- doStop
	Stops this instance. More...

(int)	- getCcmSequenceNumber
	Gets the CCM sequence number. More...

(FMLiveSwitchFuture< NSMutableArray * > *)	- getInputs
	Gets the available inputs. More...

(long long)	- getPipelineSystemDelayWithOutputFormat:
	Gets the total pipeline system delay in ticks for a given output format. More...

(bool)	- hasOutput:
	Determines whether this source has the specified output. More...

(void)	- incrementCcmSequenceNumber
	Increments the CCM sequence number. More...

(instancetype)	- initWithOutputFormat:
	Initializes a new instance of the FMLiveSwitchMediaSource`8 class. More...

(FMLiveSwitchSourceInput *)	- input
	Gets the current input. More...

(bool)	- isDestroyed
	Gets whether the current state is Destroyed. More...

(bool)	- isStarted
	Gets whether the current state is Started. More...

(bool)	- isStopped
	Gets whether the current state is Stopped. More...

(int)	- maxOutputBitrate
	Gets the maximum allowed output bitrate, in kbps. More...

(FMLiveSwitchEncodingInfo *)	- maxOutputEncoding
	Gets the maximum allowed output encoding. More...

(int)	- minOutputBitrate
	Gets the minimum allowed output bitrate, in kbps. More...

(FMLiveSwitchEncodingInfo *)	- minOutputEncoding
	Gets the minimum allowed output encoding. More...

(bool)	- muted
	Gets whether output is muted. More...

(TIInput)	- output
	Gets the output. More...

(void)	- outputAddedWithOutput:
	Called when an output is added. More...

(bool)	- outputCanProcessFrameWithOutput:
	Determines whether an output can process a frame from this pipe. More...

(bool)	- outputDeactivated
	Gets whether output is deactivated. More...

(TFormat)	- outputFormat
	Gets the output format. More...

(bool)	- outputMuted
	Gets whether output is muted. More...

(void)	- outputRemovedWithOutput:
	Called when an output is removed. More...

(NSString *)	- outputRtpStreamId
	Gets the output RTP stream identifier. More...

(NSMutableArray *)	- outputs
	Gets the outputs. More...

(bool)	- outputSynchronizable
	Gets whether output is synchronizable. More...

(long long)	- outputSynchronizationSource
	Gets the output synchronization source. More...

(bool)	- overConstrained
	Gets whether this source is over-constrained. More...

(bool)	- overConstrainedBitrate
	Gets whether the source bitrate is over-constrained. More...

(bool)	- overConstrainedOutput
	Gets whether the output is over-constrained. More...

(bool)	- overConstrainedOutputBitrate
	Gets whether the minimum allowed output bitrate exceeds the maximum allowed output bitrate. More...

(bool)	- paused
	Gets a value indicating whether this source is paused. More...

(bool)	- persistent
	Gets a value indicating whether this instance is persistent. More...

(NSString *)	- pipelineJson
	Gets the pipeline JSON with this as the central point. More...

(NSString *)	- pipelineJsonFromOutput
	Gets the pipeline JSON from an output. More...

(void)	- processControlFrame:
	Processes a control frame. More...

(void)	- processControlFrames:
	Processes control frames. More...

(FMLiveSwitchError *)	- processSdpMediaDescriptionFromOutputWithMediaDescription:isOffer:isLocalDescription:
	Processes a local SDP media description from an output. More...

(void)	- processSourceStatsFromOutputWithSourceStats:
	Processes source stats from an output. More...

(void)	- processTrackStatsFromOutputWithTrackStats:
	Processes track stats from an output. More...

(void)	- raiseControlFrameResponse:
	Raises a control frame response. More...

(void)	- raiseControlFrameResponse:outputs:
	Raises a control frame response. More...

(void)	- raiseControlFrameResponses:
	Raises control frame responses. More...

(void)	- raiseControlFrameResponses:outputs:
	Raises control frame responses. More...

(void)	- raiseDisabledChange
	Raises the OnDisabledChange event. More...

(void)	- raiseFrame:
	Raises a frame. More...

(void)	- removeOnDisabledChange:
	Removes a handler that is raised when the Disabled property changes state. More...

(void)	- removeOnDisabledChangeWithCaller:
	Removes a handler that is raised when the Disabled property changes state. More...

(void)	- removeOnMuted:
	Removes a handler that is raised when the source is muted. More...

(void)	- removeOnPausedChange:
	Removes a handler that is raised when the Paused property changes state. More...

(void)	- removeOnProcessControlFrames:
	Removes a handler that is raised when control frames are processed. More...

(void)	- removeOnProcessedControlFrames:
	Removes a handler that is raised when control frames have been processed. More...

(void)	- removeOnRaiseControlFrameResponses:
	Removes a handler that is raised when control frame responses are raised. More...

(void)	- removeOnRaisedControlFrameResponses:
	Removes a handler that is raised when control frame responses have been raised. More...

(void)	- removeOnRaisedFrame:
	Removes a handler that is raised when a frame has been raised. More...

(void)	- removeOnRaiseFrame:
	Removes a handler that is raised when a frame is being raised. More...

(void)	- removeOnStateChange:
	Removes a handler that is raised when the state changes. More...

(void)	- removeOnUnmuted:
	Removes a handler that is raised when the source is unmuted. More...

(bool)	- removeOutput:
	Removes an output. More...

(void)	- removeOutputs
	Removes all outputs. More...

(void)	- removeOutputs:
	Removes some outputs. More...

(void)	- setDeactivated:
	Sets a value indicating whether this source is deactivated. More...

(void)	- setInput:
	Sets the current input. More...

(void)	- setMaxOutputBitrate:
	Sets the maximum allowed output bitrate, in kbps. More...

(void)	- setMaxOutputEncoding:
	Sets the maximum allowed output encoding. More...

(void)	- setMinOutputBitrate:
	Sets the minimum allowed output bitrate, in kbps. More...

(void)	- setMinOutputEncoding:
	Sets the minimum allowed output encoding. More...

(void)	- setMuted:
	Sets whether output is muted. More...

(void)	- setOutput:
	Sets the output. More...

(void)	- setOutputDeactivated:
	Sets whether output is deactivated. More...

(void)	- setOutputMuted:
	Sets whether output is muted. More...

(void)	- setOutputRtpStreamId:
	Sets the output RTP stream identifier. More...

(void)	- setOutputs:
	Sets the outputs. More...

(void)	- setOutputSynchronizable:
	Sets whether output is synchronizable. More...

(void)	- setOutputSynchronizationSource:
	Sets the output synchronization source. More...

(void)	- setPersistent:
	Sets a value indicating whether this instance is persistent. More...

(void)	- setSynchronizationSource:
	Sets the output synchronization source. More...

(void)	- setSystemDelay:
	Sets the system delay in ticks. More...

(void)	- setTargetOutputBitrate:
	Sets the target output bitrate, in kbps. More...

(void)	- setTargetOutputEncoding:
	Sets the target output encoding. More...

(FMLiveSwitchFuture< id > *)	- start
	Starts this instance. More...

(FMLiveSwitchMediaSourceState)	- state
	Gets the state. More...

(FMLiveSwitchFuture< id > *)	- stop
	Stops this instance. More...

(long long)	- synchronizationSource
	Gets the output synchronization source. More...

(long long)	- systemDelay
	Gets the system delay in ticks. More...

(int)	- targetOutputBitrate
	Gets the target output bitrate, in kbps. More...

(FMLiveSwitchEncodingInfo *)	- targetOutputEncoding
	Gets the target output encoding. More...

(bool)	- updateDisabled
	Updates the disabled property. More...

Instance Methods inherited from <FMLiveSwitchIMediaOutput>
(void)	- addOnDisabledChange:
	Adds a handler that is raised when the Disabled property changes state. More...

(void)	- addOnDisabledChangeWithCaller:
	Adds a handler that is raised when the Disabled property changes state. More...

(id)	- addOnDisabledChangeWithCallerWithBlock
	Adds a handler that is raised when the Disabled property changes state. More...

(void)	- addOnDisabledChangeWithCallerWithBlock:
	Adds a handler that is raised when the Disabled property changes state. More...

(void)	- addOnPausedChange:
	Adds a handler that is raised when the Paused property changes state. More...

(void)	- addOnProcessControlFrames:
	Adds a handler that is raised when control frames are processed. More...

(NSMutableArray *)	- addOnProcessControlFramesWithBlock
	Adds a handler that is raised when control frames are processed. More...

(void)	- addOnProcessControlFramesWithBlock:
	Adds a handler that is raised when control frames are processed. More...

(void)	- addOnRaiseControlFrameResponses:
	Adds a handler that is raised when a control frame response is raised. More...

(NSMutableArray *)	- addOnRaiseControlFrameResponsesWithBlock
	Adds a handler that is raised when a control frame response is raised. More...

(void)	- addOnRaiseControlFrameResponsesWithBlock:
	Adds a handler that is raised when a control frame response is raised. More...

(void)	- addOnRaiseFrame:
	Adds a handler that is raised when a frame is raised. More...

(FMLiveSwitchMediaFrame *)	- addOnRaiseFrameWithBlock
	Adds a handler that is raised when a frame is raised. More...

(void)	- addOnRaiseFrameWithBlock:
	Adds a handler that is raised when a frame is raised. More...

(NSString *)	- content
	Gets the content descriptor. More...

(int)	- getCcmSequenceNumber
	Gets the CCM sequence number. More...

(long long)	- getPipelineSystemDelayWithOutputFormat:
	Gets the total pipeline system delay in ticks for a given media format. More...

(void)	- incrementCcmSequenceNumber
	Increments the CCM sequence number. More...

(int)	- maxOutputBitrate
	Gets the maximum allowed output bitrate, in kbps. More...

(FMLiveSwitchEncodingInfo *)	- maxOutputEncoding
	Gets the maximum allowed output encoding. More...

(int)	- minOutputBitrate
	Gets the minimum allowed output bitrate, in kbps. More...

(FMLiveSwitchEncodingInfo *)	- minOutputEncoding
	Gets the minimum allowed output encoding. More...

(bool)	- outputDeactivated
	Gets whether output is deactivated. More...

(bool)	- outputMuted
	Gets whether output is muted. More...

(NSString *)	- outputRtpStreamId
	Gets the output RTP stream identifier. More...

(bool)	- outputSynchronizable
	Gets whether output is synchronizable. More...

(long long)	- outputSynchronizationSource
	Gets the output synchronization source. More...

(void)	- processControlFrames:
	Processes control frames. More...

(FMLiveSwitchError *)	- processSdpMediaDescriptionFromOutputWithMediaDescription:isOffer:isLocalDescription:
	Processes a local SDP media description from an output. More...

(void)	- processSourceStatsFromOutputWithSourceStats:
	Processes source stats from an output. More...

(void)	- processTrackStatsFromOutputWithTrackStats:
	Processes track stats from an output. More...

(void)	- removeOnDisabledChange:
	Removes a handler that is raised when the Disabled property changes state. More...

(void)	- removeOnDisabledChangeWithCaller:
	Removes a handler that is raised when the Disabled property changes state. More...

(void)	- removeOnPausedChange:
	Removes a handler that is raised when the Paused property changes state. More...

(void)	- removeOnProcessControlFrames:
	Removes a handler that is raised when control frames are processed. More...

(void)	- removeOnRaiseControlFrameResponses:
	Removes a handler that is raised when a control frame response is raised. More...

(void)	- removeOnRaiseFrame:
	Removes a handler that is raised when a frame is raised. More...

(long long)	- systemDelay
	Gets the system delay in ticks. More...

(int)	- targetOutputBitrate
	Gets the target output bitrate, in kbps. More...

(FMLiveSwitchEncodingInfo *)	- targetOutputEncoding
	Gets the target output encoding. More...

Instance Methods inherited from <FMLiveSwitchIOutput>
(void)	- addOutput:
	Adds an output. More...

(void)	- addOutputs:
	Adds some outputs. More...

(NSObject< FMLiveSwitchIInput > *)	- output
	Gets the output. More...

(FMLiveSwitchMediaFormat *)	- outputFormat
	Gets the output format. More...

(NSMutableArray *)	- outputs
	Gets the outputs. More...

(NSString *)	- pipelineJsonFromOutput
	Gets the pipeline JSON from an output. More...

(bool)	- removeOutput:
	Removes an output. More...

(void)	- removeOutputs
	Removes all outputs. More...

(void)	- removeOutputs:
	Removes some outputs. More...

Instance Methods inherited from <FMLiveSwitchIElement>
(NSString *)	- externalId
	Gets the external identifier. More...

(NSString *)	- id
	Gets the identifier. More...

(NSString *)	- pipelineJson
	Gets the pipeline JSON with this as the central point. More...

(void)	- setExternalId:
	Sets the external identifier. More...

Instance Methods inherited from <FMLiveSwitchIMediaElement>
(bool)	- deactivated
	Gets a value indicating whether this instance is deactivated. More...

(bool)	- destroy
	Destroys this instance. More...

(bool)	- disabled
	Gets a value indicating whether this instance is disabled. More...

(bool)	- muted
	Gets a value indicating whether this instance is muted. More...

(bool)	- paused
	Gets a value indicating whether this instance is paused. More...

(bool)	- persistent
	Gets a value indicating whether this instance is persistent. More...

(void)	- setDeactivated:
	Sets a value indicating whether this instance is deactivated. More...

(void)	- setMuted:
	Sets a value indicating whether this instance is muted. More...

Class Methods
(instancetype)	+ audioUnitSourceWithConfig:
	Creates an audio source with the specified audio configuration. More...

Class Methods inherited from FMLiveSwitchAudioSource
(FMLiveSwitchAudioSource *)	+ audioSourceWithOutputFormat:
	Initializes a new instance of the FMLiveSwitchAudioSource class. More...

(FMLiveSwitchAudioSource *)	+ audioSourceWithOutputFormat:frameDuration:
	Initializes a new instance of the FMLiveSwitchAudioSource class. More...

(int)	+ calculateDurationFloatWithDataLength:clockRate:channelCount:
	Calculates the duration of an audio chunk given its data length (the number of bytes), clock rate, and channel count. More...

(int)	+ calculateDurationWithDataLength:clockRate:channelCount:
	Calculates the duration of an audio chunk given its data length (the number of bytes), clock rate, and channel count. More...

(int)	+ calculateDurationWithDataLength:config:
	Calculates the duration of an audio chunk given its data length (the number of bytes), clock rate, and channel count. More...

Class Methods inherited from FMLiveSwitchMediaSource
(FMLiveSwitchMediaSource *)	+ mediaSourceWithOutputFormat:
	Initializes a new instance of the FMLiveSwitchMediaSource`8 class. More...

Additional Inherited Members
Protected Attributes inherited from FMLiveSwitchMediaSource
	__pad0__: FMLiveSwitchMediaSourceBase<FMLiveSwitchIMediaOutput

	FMLiveSwitchIOutput

	FMLiveSwitchIMediaElement

Detailed Description

Audio source that captures microphone input through the centralized AudioSessionManager's VPIO.

@discussion This source registers a callback with AudioSessionManager to receive microphone audio that has been processed through the shared VPIO AudioUnit. The VPIO provides built-in echo cancellation, noise suppression, and automatic gain control.

Key Architectural Points:

Does NOT own an AudioUnit (AudioSessionManager owns the shared VPIO)
Does NOT create or configure AudioUnit (AudioSessionManager handles this)
Registers a callback with AudioSessionManager to receive mic data
Only ONE source can register at a time (microphone is singular)
Receives audio AFTER echo cancellation and noise suppression

Lifecycle:

Created when LocalMedia is instantiated
Registers with AudioSessionManager on start (startInternalWithBuffer)
Registers callback to receive microphone data
Callback invoked by AudioSessionManager when mic data available
Unregisters callback and from AudioSessionManager on stop (stopInternal)

Audio Flow:

Microphone → VPIO (AEC/NS/AGC) → AudioSessionManager Input Callback →

AudioUnitSource.captureCallback() → AudioUnitRender() → Process → IceLink

Echo Cancellation:

VPIO's AEC sees both microphone input (this source) and speaker output (from sinks)
This is why centralized VPIO is crucial - it can cancel echo properly
With separate AudioUnits, AEC doesn't have the speaker reference

Thread Safety:

start/stop called on arbitrary thread (typically main)
Callback runs on real-time audio thread (high priority)
Must not block or allocate memory in callback

Comparison to Traditional Approach:

OLD (Per-Source AudioUnit):

Source creates its own AudioUnit (VPIO or RemoteIO)
VPIO doesn't see speaker output → no echo cancellation
Or RemoteIO used → no echo cancellation at all

NEW (Centralized VPIO):

Source registers callback with AudioSessionManager
Receives mic audio from shared VPIO
VPIO sees speaker output → proper echo cancellation

Usage:

// Created automatically by LocalMedia
FMLiveSwitchAudioConfig *config = [FMLiveSwitchAudioConfig audioConfigWithClockRate:48000];
FMLiveSwitchCocoaAudioUnitSource *source = [FMLiveSwitchCocoaAudioUnitSource audioUnitSourceWithConfig:config];
[localMedia setAudioSource:source];

Method Documentation

◆ audioUnitSourceWithConfig:

+ (instancetype) audioUnitSourceWithConfig: (FMLiveSwitchAudioConfig *) config

Creates an audio source with the specified audio configuration.

Parameters

config The audio configuration (sample rate, channel count, etc.).

Returns: A new AudioUnitSource instance.

@discussion This creates a source configured for the given audio format. The source will register with AudioSessionManager when started.

Typical configurations:

VoIP: 48kHz, 1 channel (mono), 16-bit PCM
High-quality: 48kHz, 2 channels (stereo), 16-bit PCM

Note: Mono is recommended for best echo cancellation results.

Example:

FMLiveSwitchAudioConfig *config = [FMLiveSwitchAudioConfig audioConfigWithClockRate:48000];
config.channelCount = 1;
FMLiveSwitchCocoaAudioUnitSource *source = [FMLiveSwitchCocoaAudioUnitSource audioUnitSourceWithConfig:config];

◆ bypassVoiceProcessing

- (bool) bypassVoiceProcessing

Gets whether voice processing is bypassed.

Returns: Current bypass state from AudioSessionManager.

@discussion Returns the current bypass state from AudioSessionManager. When bypassed, VPIO structure is maintained but echo cancellation and noise suppression are disabled.

To modify this setting, use:

[[FMLiveSwitchCocoaAudioSessionManager sharedInstance] setBypassVoiceProcessing:YES];

◆ label

- (NSString *) label

Gets the label/name of this audio source implementation.

Returns: A string identifying this source (e.g., "iOS AudioUnit Source (Centralized VPIO)").

@discussion The label varies by platform:

iOS: "iOS AudioUnit Source (Centralized VPIO)"
tvOS: "tvOS AudioUnit Source (Centralized VPIO)"
macOS: "macOS AudioUnit Source (Centralized VPIO)"

This is primarily used for logging and debugging.

Implements FMLiveSwitchMediaSource.

◆ setBypassVoiceProcessing:

- (void) setBypassVoiceProcessing: (bool) bypassVoiceProcessing

Legacy setter - has no effect (bypass managed by AudioSessionManager).

Parameters

bypassVoiceProcessing Ignored parameter.

@discussion This setter is maintained for API compatibility but has no effect. To configure bypass, use AudioSessionManager.bypassVoiceProcessing instead.

Deprecated:: Use AudioSessionManager configuration instead.

◆ setUseVoiceProcessingIO:

- (void) setUseVoiceProcessingIO: (bool) useVoiceProcessingIO

Legacy setter - has no effect (VPIO configuration managed by AudioSessionManager).

Parameters

useVoiceProcessingIO Ignored parameter.

@discussion This setter is maintained for API compatibility but has no effect. To configure VPIO vs RemoteIO, use:

[[FMLiveSwitchCocoaAudioSessionManager sharedInstance] setUseVoiceProcessingIO:YES];

Deprecated:: Use AudioSessionManager configuration instead.

◆ setVoiceProcessingEnableAGC:

- (void) setVoiceProcessingEnableAGC: (bool) voiceProcessingEnableAGC

Legacy setter - has no effect (AGC managed by AudioSessionManager).

Parameters

voiceProcessingEnableAGC Ignored parameter.

@discussion This setter is maintained for API compatibility but has no effect. To configure AGC, use AudioSessionManager.voiceProcessingEnableAGC instead.

Deprecated:: Use AudioSessionManager configuration instead.

◆ useVoiceProcessingIO

- (bool) useVoiceProcessingIO

Legacy property - gets whether VPIO is in use.

(VPIO always used via AudioSessionManager).

Returns: A value indication whether VPIO is in use by AudioSessionManager.

@discussion This property is maintained for API compatibility but has no effect. The source always uses the shared VPIO from AudioSessionManager. To configure VPIO vs RemoteIO, use AudioSessionManager.useVoiceProcessingIO instead.

Deprecated:: Use AudioSessionManager configuration instead.

◆ voiceProcessingEnableAGC

- (bool) voiceProcessingEnableAGC

Gets whether Automatic Gain Control (AGC) is enabled.

Returns: Current AGC state from AudioSessionManager.

@discussion Returns the current AGC state from AudioSessionManager. AGC automatically adjusts microphone gain for consistent volume.

To modify this setting, use:

[[FMLiveSwitchCocoaAudioSessionManager sharedInstance] setVoiceProcessingEnableAGC:YES];

Instance Methods

Class Methods

Additional Inherited Members

Detailed Description

Method Documentation

◆ audioUnitSourceWithConfig:

◆ bypassVoiceProcessing

◆ label

◆ setBypassVoiceProcessing:

◆ setUseVoiceProcessingIO:

◆ setVoiceProcessingEnableAGC:

◆ useVoiceProcessingIO

◆ voiceProcessingEnableAGC