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101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
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/*
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* libmad - MPEG audio decoder library
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* Copyright (C) 2000-2004 Underbit Technologies, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* $Id: timer.h,v 1.16 2004/01/23 09:41:33 rob Exp $
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*/
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# ifndef LIBMAD_TIMER_H
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# define LIBMAD_TIMER_H
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typedef struct {
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signed long seconds; /* whole seconds */
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unsigned long fraction; /* 1/MAD_TIMER_RESOLUTION seconds */
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} mad_timer_t;
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extern mad_timer_t const mad_timer_zero;
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# define MAD_TIMER_RESOLUTION 352800000UL
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enum mad_units {
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MAD_UNITS_HOURS = -2,
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MAD_UNITS_MINUTES = -1,
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MAD_UNITS_SECONDS = 0,
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/* metric units */
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MAD_UNITS_DECISECONDS = 10,
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MAD_UNITS_CENTISECONDS = 100,
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MAD_UNITS_MILLISECONDS = 1000,
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/* audio sample units */
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MAD_UNITS_8000_HZ = 8000,
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MAD_UNITS_11025_HZ = 11025,
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MAD_UNITS_12000_HZ = 12000,
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MAD_UNITS_16000_HZ = 16000,
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MAD_UNITS_22050_HZ = 22050,
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MAD_UNITS_24000_HZ = 24000,
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MAD_UNITS_32000_HZ = 32000,
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MAD_UNITS_44100_HZ = 44100,
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MAD_UNITS_48000_HZ = 48000,
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/* video frame/field units */
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MAD_UNITS_24_FPS = 24,
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MAD_UNITS_25_FPS = 25,
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MAD_UNITS_30_FPS = 30,
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MAD_UNITS_48_FPS = 48,
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MAD_UNITS_50_FPS = 50,
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MAD_UNITS_60_FPS = 60,
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/* CD audio frames */
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MAD_UNITS_75_FPS = 75,
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/* video drop-frame units */
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MAD_UNITS_23_976_FPS = -24,
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MAD_UNITS_24_975_FPS = -25,
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MAD_UNITS_29_97_FPS = -30,
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MAD_UNITS_47_952_FPS = -48,
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MAD_UNITS_49_95_FPS = -50,
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MAD_UNITS_59_94_FPS = -60
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};
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# define mad_timer_reset(timer) ((void) (*(timer) = mad_timer_zero))
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int mad_timer_compare(mad_timer_t, mad_timer_t);
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# define mad_timer_sign(timer) mad_timer_compare((timer), mad_timer_zero)
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void mad_timer_negate(mad_timer_t *);
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mad_timer_t mad_timer_abs(mad_timer_t);
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void mad_timer_set(mad_timer_t *, unsigned long, unsigned long, unsigned long);
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void mad_timer_add(mad_timer_t *, mad_timer_t);
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void mad_timer_multiply(mad_timer_t *, signed long);
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signed long mad_timer_count(mad_timer_t, enum mad_units);
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unsigned long mad_timer_fraction(mad_timer_t, unsigned long);
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void mad_timer_string(mad_timer_t, char *, char const *,
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enum mad_units, enum mad_units, unsigned long);
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# endif
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