transport_delay.h File Reference

Transport delay filter implementation. More...

#include "paparazzi.h"

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Data Structures
struct	TransportDelay

Macros
#define	TRANSPORT_DELAY_BUFFER_SIZE   20

Functions
static void	init_transport_delay (struct TransportDelay *td, uint8_t delay_samples, const float initial_value)
	Initialize a transport delay buffer.
static float	update_transport_delay (struct TransportDelay *td, const float input)
	Propagate a new input value through the transport delay buffer.
static void	reset_transport_delay (struct TransportDelay *td, const float initial_value)
	Reset the transport delay buffer to a specific initial value.
static float	get_transport_delay (const struct TransportDelay *td)
	Get the current output value from the transport delay buffer without updating it.

Detailed Description

Transport delay filter implementation.

Definition in file transport_delay.h.

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Data Structure Documentation

TransportDelay

struct TransportDelay

Definition at line 31 of file transport_delay.h.

Data Fields
float	buffer[TRANSPORT_DELAY_BUFFER_SIZE]
uint8_t	delay_samples
uint8_t	write_index

Macro Definition Documentation

TRANSPORT_DELAY_BUFFER_SIZE

#define TRANSPORT_DELAY_BUFFER_SIZE   20

Definition at line 29 of file transport_delay.h.

Function Documentation

get_transport_delay()

static float get_transport_delay ( const struct TransportDelay *  td )

inlinestatic

Get the current output value from the transport delay buffer without updating it.

Parameters

td	Pointer to the transport_delay_t structure.

Returns

Current delayed output value from the buffer.

Definition at line 97 of file transport_delay.h.

References foo, and TRANSPORT_DELAY_BUFFER_SIZE.

Referenced by get_transport_delay_array().

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init_transport_delay()

static void init_transport_delay ( struct TransportDelay *  td, uint8_t  delay_samples, const float  initial_value  )

inlinestatic

Initialize a transport delay buffer.

Parameters

[out]	td	Pointer to the transport_delay_t structure to initialize.
[in]	delay_samples	Number of samples to delay. If this value exceeds TRANSPORT_DELAY_BUFFER_SIZE, it will be clamped to TRANSPORT_DELAY_BUFFER_SIZE.
[in]	initial_value	Initial value to fill the buffer with.

Note

: If delay_samples > TRANSPORT_DELAY_BUFFER_SIZE, it will be clamped to TRANSPORT_DELAY_BUFFER_SIZE and the requested delay will not be fully honored.

Definition at line 49 of file transport_delay.h.

References foo, and TRANSPORT_DELAY_BUFFER_SIZE.

Referenced by init_transport_delay_array().

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reset_transport_delay()

static void reset_transport_delay ( struct TransportDelay *  td, const float  initial_value  )

inlinestatic

Reset the transport delay buffer to a specific initial value.

Parameters

[in,out]	td	Pointer to the transport_delay_t structure.
[in]	initial_value	Value to reset the buffer elements to.

Definition at line 83 of file transport_delay.h.

References foo, and TRANSPORT_DELAY_BUFFER_SIZE.

Referenced by reset_transport_delay_array().

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update_transport_delay()

static float update_transport_delay ( struct TransportDelay *  td, const float  input  )

inlinestatic

Propagate a new input value through the transport delay buffer.

Parameters

[in,out]	td	Pointer to the transport_delay_t structure.
[in]	input	New input value to add to the buffer.

Returns

Delayed output value from the buffer.

Definition at line 68 of file transport_delay.h.

References foo, and TRANSPORT_DELAY_BUFFER_SIZE.

Referenced by update_transport_delay_array().

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