FourTrackPlayer Class Reference

FourTrackPlayer plays back four motion streams from an SD card file. More...

#include <recording.hpp>

Inheritance diagram for FourTrackPlayer:

Public Member Functions
void	begin ()
	Initializes the FourTrackPlayer. Must be called before using the player.
void	start (const char *recording_name="recording")
	Starts playback of a recording with the specified name.
void	pause ()
	Pauses the current playback.
void	resume ()
	Resumes a paused playback.
void	stop ()
	Stops the current playback.
void	set_resolution (float output_units, float per_steps=1.0)
	Sets the resolution for playback in world units per step.

Public Attributes
BlockPort &	output_1 = output_BlockPorts[0]
	Output BlockPort for the first playback channel. Map downstream components to this port.
BlockPort &	output_2 = output_BlockPorts[1]
	Output BlockPort for the second playback channel. Map downstream components to this port.
BlockPort &	output_3 = output_BlockPorts[2]
	Output BlockPort for the third playback channel. Map downstream components to this port.
BlockPort &	output_4 = output_BlockPorts[3]
	Output BlockPort for the fourth playback channel. Map downstream components to this port.
volatile long	current_sample_index = 0
	Current sample index in the playback.
long	max_num_playback_samples = 0
	Maximum number of samples in the playback.
volatile bool	playback_active = false
	Indicates whether the player is currently active.

Protected Member Functions
void	run ()

Detailed Description

FourTrackPlayer plays back four motion streams from an SD card file.

The FourTrackPlayer class allows simultaneous playback of four motion streams from a recorded SD card file. Each track can be mapped to a BlockPort for output. The player supports starting, pausing, resuming, and stopping playback, as well as setting the resolution for playback. It reads recorded data stored in a binary format on the SD card for efficient retrieval. It is typically used in conjunction with the FourTrackRecorder class for recording motion streams. Here's an example of how to instantiate and configure a FourTrackPlayer: AxiDraw Recorder Example.

Member Function Documentation

set_resolution()

void FourTrackPlayer::set_resolution	(	float	output_units,
		float	per_steps = 1.0 )

Sets the resolution for playback in world units per step.

Parameters

output_units	World units corresponding to one step.
per_steps	Number of steps. Default is 1.0.

start()

void FourTrackPlayer::start

(

const char *

recording_name = "recording"

)

Starts playback of a recording with the specified name.

Parameters

recording_name

Name of the recording file to play back. This should match the name used during recording.

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

• lib/recording.hpp