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/*
Audio File Library
Copyright (C) 2000, Silicon Graphics, Inc.
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA
*/
/*
pcm.h
This file defines various constants for PCM mapping.
*/
#ifndef PCM_H
#define PCM_H
/*
SLOPE_INTN = 2^(N-1)
*/
#define SLOPE_INT8 (128.0)
#define SLOPE_INT16 (32768.0)
#define SLOPE_INT24 (8388608.0)
#define SLOPE_INT32 (2147483648.0)
/*
INTERCEPT_U_INTN = 2^(N-1)
*/
#define INTERCEPT_U_INT8 (128.0)
#define INTERCEPT_U_INT16 (32768.0)
#define INTERCEPT_U_INT24 (8388608.0)
#define INTERCEPT_U_INT32 (2147483648.0)
/*
MIN_INTN = -(2^(N-1))
*/
#define MIN_INT8 (-128.0)
#define MIN_INT16 (-32768.0)
#define MIN_INT24 (-8388608.0)
#define MIN_INT32 (-2147483648.0)
/*
MAX_INTN = 2^(N-1) - 1
*/
#define MAX_INT8 127.0
#define MAX_INT16 32767.0
#define MAX_INT24 8388607.0
#define MAX_INT32 2147483647.0
/*
MAX_U_INTN = 2^N - 1
*/
#define MAX_U_INT8 255.0
#define MAX_U_INT16 65535.0
#define MAX_U_INT24 16777215.0
#define MAX_U_INT32 4294967295.0
extern const PCMInfo _af_default_signed_integer_pcm_mappings[];
extern const PCMInfo _af_default_unsigned_integer_pcm_mappings[];
extern const PCMInfo _af_default_float_pcm_mapping;
extern const PCMInfo _af_default_double_pcm_mapping;
#endif
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