util.h

《Visual C++小波变换技术与工程实践》作者：靳济芳。书上的代码。第3章：语音的去噪处理

/*
 * FAAC - Freeware Advanced Audio Coder
 * Copyright (C) 2001 Menno Bakker
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * $Id: util.h,v 1.4 2001/09/05 20:51:15 wmay Exp $
 */

#ifndef UTIL_H
#define UTIL_H

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

#include <stdlib.h>
#include <memory.h>

#ifndef max
#define max(a, b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef min
#define min(a, b) (((a) < (b)) ? (a) : (b))
#endif

#ifndef M_PI
#define M_PI        3.14159265358979323846
#endif

/* Memory functions */
#define AllocMemory(size) malloc(size)
#define FreeMemory(block) free(block)
#define SetMemory(block, value, size) memset(block, value, size)

int GetSRIndex(unsigned int sampleRate);
int GetMaxPredSfb(int samplingRateIdx);
unsigned int MaxBitrate(unsigned long sampleRate);
unsigned int MinBitrate();
unsigned int MaxBitresSize(unsigned long bitRate, unsigned long sampleRate);
unsigned int BitAllocation(double pe, int short_block);
int IsBigEndian();

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* UTIL_H */