timer.h
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- /*
- * libmad - MPEG audio decoder library
- * Copyright (C) 2000-2003 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 1.1 2003/08/31 19:00:17 gabest 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