/*************************************************************************//*                                                                       *//*                  Language Technologies Institute                      *//*                     Carnegie Mellon University                        *//*                        Copyright (c) 1999                             *//*                        All Rights Reserved.                           *//*                                                                       *//*  Permission is hereby granted, free of charge, to use and distribute  *//*  this software and its documentation without restriction, including   *//*  without limitation the rights to use, copy, modify, merge, publish,  *//*  distribute, sublicense, and/or sell copies of this work, and to      *//*  permit persons to whom this work is furnished to do so, subject to   *//*  the following conditions:                                            *//*   1. The code must retain the above copyright notice, this list of    *//*      conditions and the following disclaimer.                         *//*   2. Any modifications must be clearly marked as such.                *//*   3. Original authors' names are not deleted.                         *//*   4. The authors' names are not used to endorse or promote products   *//*      derived from this software without specific prior written        *//*      permission.                                                      *//*                                                                       *//*  CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK         *//*  DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING      *//*  ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT   *//*  SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE      *//*  FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES    *//*  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN   *//*  AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,          *//*  ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF       *//*  THIS SOFTWARE.                                                       *//*                                                                       *//*************************************************************************//*             Author:  Alan W Black (awb@cs.cmu.edu)                    *//*               Date:  August 2000                                      *//*************************************************************************//*                                                                       *//*  Waveforms                                                            *//*                                                                       *//*************************************************************************/#ifndef _CST_WAVE_H__#define _CST_WAVE_H__ #include "cst_file.h"#include "cst_error.h"#include "cst_alloc.h"#include "cst_endian.h"#include "cst_file.h"#include "cst_val.h" typedef struct  cst_wave_struct {    const char *type;    int sample_rate;    int num_samples;    int num_channels;    short *samples;} cst_wave; typedef struct  cst_wave_header_struct {    const char *type;    int hsize;    int num_bytes;    int sample_rate;    int num_samples;    int num_channels;} cst_wave_header; cst_wave *new_wave(void);cst_wave *copy_wave(const cst_wave *w);void delete_wave(cst_wave *val);cst_wave *concat_wave(cst_wave *dest, const cst_wave *src); #define cst_wave_num_samples(w) (w?w->num_samples:0)#define cst_wave_num_channels(w) (w?w->num_channels:0)#define cst_wave_sample_rate(w) (w?w->sample_rate:0)#define cst_wave_samples(w) (w->samples) #define cst_wave_set_num_samples(w,s) w->num_samples=s#define cst_wave_set_num_channels(w,s) w->num_channels=s#define cst_wave_set_sample_rate(w,s) w->sample_rate=s int cst_wave_save(cst_wave *w, const char *filename, const char *type);int cst_wave_save_riff(cst_wave *w, const char *filename);int cst_wave_save_raw(cst_wave *w, const char *filename);int cst_wave_append_riff(cst_wave *w,const char *filename); int cst_wave_save_riff_fd(cst_wave *w, cst_file fd);int cst_wave_save_raw_fd(cst_wave *w, cst_file fd); int cst_wave_load(cst_wave *w, const char *filename, const char *type);int cst_wave_load_riff(cst_wave *w, const char *filename);int cst_wave_load_raw(cst_wave *w, const char *filename,				const char *bo, int sample_rate); int cst_wave_load_riff_header(cst_wave_header *header,cst_file fd);int cst_wave_load_riff_fd(cst_wave *w, cst_file fd);int cst_wave_load_raw_fd (cst_wave *w, cst_file fd,				    const char *bo, int sample_rate); void cst_wave_resize(cst_wave *w,int samples, int num_channels);void cst_wave_resample(cst_wave *w, int sample_rate);void cst_wave_rescale(cst_wave *w, int factor); /* Resampling code */typedef struct cst_rateconv_struct {	int channels;           /* what do you think? */	int up, down;           /* up/down sampling ratio */ 	double gain;            /* output gain */	int lag;                /* lag time (in samples) */	int *sin, *sout, *coep; /* filter buffers, coefficients */ 	/* n.b. outsize is the minimum buffer size for           cst_rateconv_out() when streaming */	int insize, outsize;    /* size of filter buffers */	int incount;		/* amount of input data */	int len;		/* size of filter */ 	/* internal foo coefficients */	double fsin, fgk, fgg;	/* internal counters */	int inbaseidx, inoffset, cycctr, outidx;} cst_rateconv; cst_rateconv * new_rateconv(int up, int down, int channels);void delete_rateconv(cst_rateconv *filt);int cst_rateconv_in(cst_rateconv *filt, const short *inptr, int max);int cst_rateconv_leadout(cst_rateconv *filt);int cst_rateconv_out(cst_rateconv *filt, short *outptr, int max); /* File format cruft. */ #define RIFF_FORMAT_PCM    0x0001#define RIFF_FORMAT_ADPCM  0x0002#define RIFF_FORMAT_MULAW  0x0006#define RIFF_FORMAT_ALAW   0x0007 /* Sun/Next header, short and sweet, note its always BIG_ENDIAN though */typedef struct {    unsigned int    magic;	/* magic number */    unsigned int    hdr_size;	/* size of this header */    int             data_size;	/* length of data (optional) */    unsigned int    encoding;	/* data encoding format */    unsigned int    sample_rate; /* samples per second */    unsigned int    channels;	 /* number of interleaved channels */} snd_header; #define CST_SND_MAGIC (unsigned int)0x2e736e64#define CST_SND_ULAW  1#define CST_SND_UCHAR 2#define CST_SND_SHORT 3 /* Convertion functions */unsigned char cst_short_to_ulaw(short sample);short cst_ulaw_to_short(unsigned char ulawbyte); #define CST_G721_LEADIN 8unsigned char *cst_g721_decode(int *actual_size,int size,                                const unsigned char *packed_residual);unsigned char *cst_g721_encode(int *packed_size,int actual_size,                                const unsigned char *unpacked_residual); CST_VAL_USER_TYPE_DCLS(wave,cst_wave) #endif