SnapTimeSyncDynamicSinceStart Class Reference

Dynamically adjusts the effective playback sample rate based on the differences of the local and server clock since the start. More...

#include <SnapTimeSync.h>

Inheritance diagram for SnapTimeSyncDynamicSinceStart:

Public Member Functions
	SnapTimeSyncDynamicSinceStart (int processingLag=CONFIG_PROCESSING_TIME_MS, int interval=10)
void	begin (int rate)
	Starts the processing.
float	getFactor ()
int	getStartDelay ()
bool	isSync ()
	Returns true if a synchronization (update of the sampling rate) is needed.
void	setInterval (int interval)
void	setMessageBufferDelay (int ms)
	Defines the message buffer lag.
void	setProcessingLag (int lag)
virtual void	updateActualDelay (int delay)
	Records the actual playback delay (currently not used)
void	updateServerTime (uint32_t serverMillis) override
	Records the actual server time in millisecondes.

Protected Attributes
bool	active = false
SnapTimePoints	current_time
int	interval = 10
uint16_t	message_buffer_delay_ms = 0
int	processing_lag = 0
SnapTimePoints	start_time
const char *	TAG = "SnapTimeSync"
uint64_t	update_count = 0

Detailed Description

Dynamically adjusts the effective playback sample rate based on the differences of the local and server clock since the start.

Author

Phil Schatzmann

Version

0.1

Date

2023-10-28

Copyright

Copyright (c) 2023

Member Function Documentation

getFactor()

float getFactor ( )

inlinevirtual

Calculate the resampling factor: with a positive delay we play too fast and need to slow down

Implements SnapTimeSync.

getStartDelay()

int getStartDelay ( )

inlineinherited

Provides the effective delay to be used (Message buffer lag - decoding/playback time)

setInterval()

void setInterval ( int  interval )

inlineinherited

Defines the interval that is used to adjust the sample rate: 10 means every 10 updates.

setProcessingLag()

void setProcessingLag ( int  lag )

inlineinherited

Defines the lag which is substracted from the message_buffer_delay_ms. It conists of the delay added by the decoder and your selected output device

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The documentation for this class was generated from the following file:

• src/api/SnapTimeSync.h