audio.c File Reference

Handles audio output for the Noble Toolkit. More...

#include "noble.h"
#include <math.h>
#include <stdio.h>

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Functions
void	audio_fft (n_byte inverse, n_uint power_sample)
void	audio_clear_buffers (n_uint length)
void	audio_clear_output (n_audio *audio, n_uint length)
void	audio_equal_output (n_audio *audio, n_uint length)
void	audio_multiply_output (n_audio *audio, n_uint length)
void	audio_set_frequency (n_uint entry, n_uint value)
void	audio_aiff_body (void *fptr, n_audio *samples, n_uint number_samples)
void	audio_aiff_header (void *fptr, n_uint total_samples)

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Detailed Description

Handles audio output for the Noble Toolkit.

Definition in file audio.c.

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Function Documentation

void audio_aiff_body	(	void *	fptr,
		n_audio *	samples,
		n_uint	number_samples
	)

Definition at line 274 of file audio.c.

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void audio_aiff_header	(	void *	fptr,
		n_uint	total_samples
	)

Definition at line 323 of file audio.c.

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void audio_clear_buffers

(

n_uint

length

)

Clears all the buffers associated with the FFT.

Parameters:

length

the length of the buffer to be cleared.

Definition at line 196 of file audio.c.

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void audio_clear_output	(	n_audio *	audio,
		n_uint	length
	)

Clears an audio output buffer

Parameters:

audio	the audio buffer to be cleared.
length	the length of the buffer to be cleared.

Definition at line 214 of file audio.c.

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void audio_equal_output	(	n_audio *	audio,
		n_uint	length
	)

Sets an audio ouput buffer to the FFT time-domain buffer.

Parameters:

audio	the audio buffer to be set.
length	the length of the buffer to be set.

Definition at line 229 of file audio.c.

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void audio_fft	(	n_byte	inverse,
		n_uint	power_sample
	)

Perform a fast fourier transform.

Parameters:

inverse	if this is an inverse FFT.
power_sample	the number of bits of the FFT cell size.

Definition at line 74 of file audio.c.

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void audio_multiply_output	(	n_audio *	audio,
		n_uint	length
	)

Multiplies an audio ouput buffer to the FFT time-domain buffer.

Parameters:

audio	the audio buffer to be multiplied.
length	the length of the buffer to be multiplied.

Definition at line 244 of file audio.c.

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void audio_set_frequency	(	n_uint	entry,
		n_uint	value
	)

Sets frequency values in the frequency FFT buffer.

Parameters:

entry	the frequency entry point.
value	the specific value to set in the frequency entry.

Definition at line 259 of file audio.c.

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