| 1 | /* |
| 2 | * This file is part of DisOrder. |
| 3 | * Copyright (C) 2004, 2005, 2007 Richard Kettlewell |
| 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 3 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, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | /** @file plugins/tracklength-wav.c |
| 19 | * @brief Compute track lengths for WAV files |
| 20 | */ |
| 21 | #include "tracklength.h" |
| 22 | #include "wav.h" |
| 23 | |
| 24 | long tl_wav(const char *path) { |
| 25 | struct wavfile f[1]; |
| 26 | int err, sample_frame_size; |
| 27 | long duration; |
| 28 | |
| 29 | if((err = wav_init(f, path))) { |
| 30 | disorder_error(err, "error opening %s", path); |
| 31 | return -1; |
| 32 | } |
| 33 | sample_frame_size = (f->bits + 7) / 8 * f->channels; |
| 34 | if(sample_frame_size) { |
| 35 | const long long n_samples = f->datasize / sample_frame_size; |
| 36 | duration = (n_samples + f->rate - 1) / f->rate; |
| 37 | } else |
| 38 | duration = -1; |
| 39 | wav_destroy(f); |
| 40 | return duration; |
| 41 | } |
| 42 | |
| 43 | /* |
| 44 | Local Variables: |
| 45 | c-basic-offset:2 |
| 46 | comment-column:40 |
| 47 | fill-column:79 |
| 48 | End: |
| 49 | */ |