2 * This file is part of DisOrder.
3 * Portions copyright (C) 2004, 2005 Richard Kettlewell (see also below)
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.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
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
26 #include <sys/types.h>
33 #include <vorbis/vorbisfile.h>
41 static void *mmap_file(const char *path, size_t *lengthp) {
46 if((fd = open(path, O_RDONLY)) < 0) {
47 disorder_error(errno, "error opening %s", path);
50 if(fstat(fd, &sb) < 0) {
51 disorder_error(errno, "error calling stat on %s", path);
54 if(sb.st_size == 0) /* can't map 0-length files */
56 if((base = mmap(0, sb.st_size, PROT_READ,
57 MAP_SHARED, fd, 0)) == (void *)-1) {
58 disorder_error(errno, "error calling mmap on %s", path);
61 *lengthp = sb.st_size;
69 static long tl_mp3(const char *path) {
74 if(!(base = mmap_file(path, &length))) return -1;
75 b.duration = mad_timer_zero;
76 scan_mp3(base, length, &b);
78 return b.duration.seconds + !!b.duration.fraction;
81 static long tl_ogg(const char *path) {
87 if(!(fp = fopen(path, "rb"))) goto error;
88 if(ov_open(fp, &vf, 0, 0)) goto error;
90 length = ov_time_total(&vf, -1);
98 static long tl_wav(const char *path) {
100 int err, sample_frame_size;
103 if((err = wav_init(f, path))) {
104 disorder_error(err, "error opening %s", path);
107 sample_frame_size = (f->bits + 7) / 8 * f->channels;
108 if(sample_frame_size) {
109 const long long n_samples = f->datasize / sample_frame_size;
110 duration = (n_samples + f->rate - 1) / f->rate;
117 static const struct {
119 long (*fn)(const char *path);
128 #define N_FILE_FORMATS (int)(sizeof file_formats / sizeof *file_formats)
130 long disorder_tracklength(const char attribute((unused)) *track,
132 const char *ext = strrchr(path, '.');
133 int l, r, m = 0, c = 0; /* quieten compiler */
137 r = N_FILE_FORMATS - 1;
138 while(l <= r && (c = strcmp(ext, file_formats[m = (l + r) / 2].ext)))
144 return file_formats[m].fn(path);