annotate aubioFullOSXUni/include/libsamplerate/common.h @ 0:572c856e38ac

Starting up openFrameworks project for audio time warping. The ofxFileReader goes in addons of your OF folder, the libraries and source (chromogram, fftw and source code src+ timewarp) are probably best kept in the repository, then dragged into the project afresh. That way, as we update the repository, the code that the openFrameworks project looks for will be updated.

/*
** Copyright (C) 2002-2008 Erik de Castro Lopo <[e-mail]>
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/

/*
** This code is part of Secret Rabibt Code aka libsamplerate. A commercial
** use license for this code is available, please see:
**		http://www.mega-nerd.com/SRC/procedure.html
*/

#ifndef COMMON_H_INCLUDED
#define COMMON_H_INCLUDED

#ifdef HAVE_STDINT_H
#include <stdint.h>
#elif (SIZEOF_INT == 4)
typedef	int		int32_t ;
#elif (SIZEOF_LONG == 4)
typedef	long	int32_t ;
#endif

#define	SRC_MAX_RATIO			256
#define	SRC_MIN_RATIO_DIFF		(1e-20)

#define	MAX(a,b)	(((a) > (b)) ? (a) : (b))
#define	MIN(a,b)	(((a) < (b)) ? (a) : (b))

#define	ARRAY_LEN(x)			((int) (sizeof (x) / sizeof ((x) [0])))
#define OFFSETOF(type,member)	((int) (&((type*) 0)->member))

#define	MAKE_MAGIC(a,b,c,d,e,f)	((a) + ((b) << 4) + ((c) << 8) + ((d) << 12) + ((e) << 16) + ((f) << 20))


#include "samplerate.h"

enum
{	SRC_FALSE	= 0,
	SRC_TRUE	= 1,

	SRC_MODE_PROCESS	= 555,
	SRC_MODE_CALLBACK	= 556
} ;

enum
{	SRC_ERR_NO_ERROR = 0,

	SRC_ERR_MALLOC_FAILED,
	SRC_ERR_BAD_STATE,
	SRC_ERR_BAD_DATA,
	SRC_ERR_BAD_DATA_PTR,
	SRC_ERR_NO_PRIVATE,
	SRC_ERR_BAD_SRC_RATIO,
	SRC_ERR_BAD_PROC_PTR,
	SRC_ERR_SHIFT_BITS,
	SRC_ERR_FILTER_LEN,
	SRC_ERR_BAD_CONVERTER,
	SRC_ERR_BAD_CHANNEL_COUNT,
	SRC_ERR_SINC_BAD_BUFFER_LEN,
	SRC_ERR_SIZE_INCOMPATIBILITY,
	SRC_ERR_BAD_PRIV_PTR,
	SRC_ERR_BAD_SINC_STATE,
	SRC_ERR_DATA_OVERLAP,
	SRC_ERR_BAD_CALLBACK,
	SRC_ERR_BAD_MODE,
	SRC_ERR_NULL_CALLBACK,
	SRC_ERR_NO_VARIABLE_RATIO,

	/* This must be the last error number. */
	SRC_ERR_MAX_ERROR
} ;

typedef struct SRC_PRIVATE_tag
{	double	last_ratio, last_position ;

	int		error ;
	int		channels ;

	/* SRC_MODE_PROCESS or SRC_MODE_CALLBACK */
	int		mode ;

	/* Pointer to data to converter specific data. */
	void	*private_data ;

	/* Varispeed process function. */
	int		(*vari_process) (struct SRC_PRIVATE_tag *psrc, SRC_DATA *data) ;

	/* Constant speed process function. */
	int		(*const_process) (struct SRC_PRIVATE_tag *psrc, SRC_DATA *data) ;

	/* State reset. */
	void	(*reset) (struct SRC_PRIVATE_tag *psrc) ;

	/* Data specific to SRC_MODE_CALLBACK. */
	src_callback_t	callback_func ;
	void			*user_callback_data ;
	long			saved_frames ;
	float			*saved_data ;
} SRC_PRIVATE ;

/* In src_sinc.c */
const char* sinc_get_name (int src_enum) ;
const char* sinc_get_description (int src_enum) ;

int sinc_set_converter (SRC_PRIVATE *psrc, int src_enum) ;

/* In src_linear.c */
const char* linear_get_name (int src_enum) ;
const char* linear_get_description (int src_enum) ;

int linear_set_converter (SRC_PRIVATE *psrc, int src_enum) ;

/* In src_zoh.c */
const char* zoh_get_name (int src_enum) ;
const char* zoh_get_description (int src_enum) ;

int zoh_set_converter (SRC_PRIVATE *psrc, int src_enum) ;

/*----------------------------------------------------------
**	Common static inline functions.
*/

static inline double
fmod_one (double x)
{	double res ;

	res = x - lrint (x) ;
	if (res < 0.0)
		return res + 1.0 ;

	return res ;
} /* fmod_one */

#endif	/* COMMON_H_INCLUDED */