rtoss - Blame information for rev 26

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14 roytam 1 /*
2  * libmad - MPEG audio decoder library
26 roytam 3  * Copyright (C) 2000-2004 Underbit Technologies, Inc.
14 roytam 4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  *
26 roytam 19  * $Id: timer.h,v 1.16 2004/01/23 09:41:33 rob Exp $
14 roytam 20  */
21  
22 # ifndef LIBMAD_TIMER_H
23 # define LIBMAD_TIMER_H
24  
25 typedef struct {
26   signed long seconds;          /* whole seconds */
27   unsigned long fraction;       /* 1/MAD_TIMER_RESOLUTION seconds */
28 } mad_timer_t;
29  
30 extern mad_timer_t const mad_timer_zero;
31  
32 # define MAD_TIMER_RESOLUTION   352800000UL
33  
34 enum mad_units {
35   MAD_UNITS_HOURS        =    -2,
36   MAD_UNITS_MINUTES      =    -1,
37   MAD_UNITS_SECONDS      =     0,
38  
39   /* metric units */
40  
41   MAD_UNITS_DECISECONDS  =    10,
42   MAD_UNITS_CENTISECONDS =   100,
43   MAD_UNITS_MILLISECONDS =  1000,
44  
45   /* audio sample units */
46  
47   MAD_UNITS_8000_HZ      =  8000,
48   MAD_UNITS_11025_HZ     = 11025,
49   MAD_UNITS_12000_HZ     = 12000,
50  
51   MAD_UNITS_16000_HZ     = 16000,
52   MAD_UNITS_22050_HZ     = 22050,
53   MAD_UNITS_24000_HZ     = 24000,
54  
55   MAD_UNITS_32000_HZ     = 32000,
56   MAD_UNITS_44100_HZ     = 44100,
57   MAD_UNITS_48000_HZ     = 48000,
58  
59   /* video frame/field units */
60  
61   MAD_UNITS_24_FPS       =    24,
62   MAD_UNITS_25_FPS       =    25,
63   MAD_UNITS_30_FPS       =    30,
64   MAD_UNITS_48_FPS       =    48,
65   MAD_UNITS_50_FPS       =    50,
66   MAD_UNITS_60_FPS       =    60,
67  
68   /* CD audio frames */
69  
70   MAD_UNITS_75_FPS       =    75,
71  
72   /* video drop-frame units */
73  
74   MAD_UNITS_23_976_FPS   =   -24,
75   MAD_UNITS_24_975_FPS   =   -25,
76   MAD_UNITS_29_97_FPS    =   -30,
77   MAD_UNITS_47_952_FPS   =   -48,
78   MAD_UNITS_49_95_FPS    =   -50,
79   MAD_UNITS_59_94_FPS    =   -60
80 };
81  
82 # define mad_timer_reset(timer) ((void) (*(timer) = mad_timer_zero))
83  
84 int mad_timer_compare(mad_timer_t, mad_timer_t);
85  
86 # define mad_timer_sign(timer)  mad_timer_compare((timer), mad_timer_zero)
87  
88 void mad_timer_negate(mad_timer_t *);
89 mad_timer_t mad_timer_abs(mad_timer_t);
90  
91 void mad_timer_set(mad_timer_t *, unsigned long, unsigned long, unsigned long);
92 void mad_timer_add(mad_timer_t *, mad_timer_t);
93 void mad_timer_multiply(mad_timer_t *, signed long);
94  
95 signed long mad_timer_count(mad_timer_t, enum mad_units);
96 unsigned long mad_timer_fraction(mad_timer_t, unsigned long);
97 void mad_timer_string(mad_timer_t, char *, char const *,
98                       enum mad_units, enum mad_units, unsigned long);
99  
100 # endif