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/*
* libmad - MPEG audio decoder library * Copyright (C) 2000-2004 Underbit Technologies, Inc. * * 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 * * $Id: timer.h,v 1.16 2004/01/23 09:41:33 rob Exp $ */
# ifndef LIBMAD_TIMER_H
# define LIBMAD_TIMER_H
typedef struct { signed long seconds; /* whole seconds */ unsigned long fraction; /* 1/MAD_TIMER_RESOLUTION seconds */} mad_timer_t;
extern mad_timer_t const mad_timer_zero;
# define MAD_TIMER_RESOLUTION 352800000UL
enum mad_units { MAD_UNITS_HOURS = -2, MAD_UNITS_MINUTES = -1, MAD_UNITS_SECONDS = 0,
/* metric units */
MAD_UNITS_DECISECONDS = 10, MAD_UNITS_CENTISECONDS = 100, MAD_UNITS_MILLISECONDS = 1000,
/* audio sample units */
MAD_UNITS_8000_HZ = 8000, MAD_UNITS_11025_HZ = 11025, MAD_UNITS_12000_HZ = 12000,
MAD_UNITS_16000_HZ = 16000, MAD_UNITS_22050_HZ = 22050, MAD_UNITS_24000_HZ = 24000,
MAD_UNITS_32000_HZ = 32000, MAD_UNITS_44100_HZ = 44100, MAD_UNITS_48000_HZ = 48000,
/* video frame/field units */
MAD_UNITS_24_FPS = 24, MAD_UNITS_25_FPS = 25, MAD_UNITS_30_FPS = 30, MAD_UNITS_48_FPS = 48, MAD_UNITS_50_FPS = 50, MAD_UNITS_60_FPS = 60,
/* CD audio frames */
MAD_UNITS_75_FPS = 75,
/* video drop-frame units */
MAD_UNITS_23_976_FPS = -24, MAD_UNITS_24_975_FPS = -25, MAD_UNITS_29_97_FPS = -30, MAD_UNITS_47_952_FPS = -48, MAD_UNITS_49_95_FPS = -50, MAD_UNITS_59_94_FPS = -60};
# define mad_timer_reset(timer) ((void) (*(timer) = mad_timer_zero))
int mad_timer_compare(mad_timer_t, mad_timer_t);
# define mad_timer_sign(timer) mad_timer_compare((timer), mad_timer_zero)
void mad_timer_negate(mad_timer_t *);mad_timer_t mad_timer_abs(mad_timer_t);
void mad_timer_set(mad_timer_t *, unsigned long, unsigned long, unsigned long);void mad_timer_add(mad_timer_t *, mad_timer_t);void mad_timer_multiply(mad_timer_t *, signed long);
signed long mad_timer_count(mad_timer_t, enum mad_units);unsigned long mad_timer_fraction(mad_timer_t, unsigned long);void mad_timer_string(mad_timer_t, char *, char const *, enum mad_units, enum mad_units, unsigned long);
# endif
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