PCM fifo
[C API]

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Detailed Description

PCM fifo.

dcplaya fifo is a thread safe FIFO that include a back buffer capability in order to get the old PCM for sound analysis.

Author:

benjamin gerard

Files
file	fifo.h
	PCM fifo with bak-buffer.
Functions
int	fifo_init (int size)
	Initialize the fifo.
int	fifo_resize (int size)
	Change the size of the fifo.
int	fifo_start (void)
	Restart the fifo.
void	fifo_stop (void)
	Stop the fifo.
void	fifo_read_lock (int *i1, int *n1, int *i2, int *n2)
void	fifo_write_lock (int *i1, int *n1, int *i2, int *n2)
void	fifo_unlock (void)
int	fifo_free (void)
	Get fifo free (writable) space.
int	fifo_used (void)
	Get fifo used (readale) space.
int	fifo_size (void)
	Get fifo size.
int	fifo_bak (void)
	Get bak-buffer size.
void	fifo_state (int *r, int *w, int *b)
int	fifo_fill ()
int	fifo_read (int *buf, int n)
	Read stereo PCM from fifo.
int	fifo_readbak (int *buf, int n)
	Read stereo PCM from fifo back-buffer.
int	fifo_write (const int *buf, int n)
	Write stereo PCM into fifo.
int	fifo_write_mono (const short *buf, int n)
	Write mono PCM into fifo.

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Function Documentation

int fifo_init (  int  size  )

Initialize the fifo. Parameters: size  Number of sample in fifo (power of 2) Returns: error-code

int fifo_resize (  int  size  )

Change the size of the fifo. Parameters: size  Number of sample in fifo (power of 2) Returns: size (may be unchanged on failure)

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dcplaya documentation version 1.2

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