2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2007 Richard Kettlewell
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>
35 /* libFLAC has had an API change and stupidly taken away the old API */
36 #if HAVE_FLAC_FILE_DECODER_H
37 # include <FLAC/file_decoder.h>
39 # include <FLAC/stream_decoder.h>
40 #define FLAC__FileDecoder FLAC__StreamDecoder
41 #define FLAC__FileDecoderState FLAC__StreamDecoderState
50 static void *mmap_file(const char *path, size_t *lengthp) {
55 if((fd = open(path, O_RDONLY)) < 0) {
56 disorder_error(errno, "error opening %s", path);
59 if(fstat(fd, &sb) < 0) {
60 disorder_error(errno, "error calling stat on %s", path);
63 if(sb.st_size == 0) /* can't map 0-length files */
65 if((base = mmap(0, sb.st_size, PROT_READ,
66 MAP_SHARED, fd, 0)) == (void *)-1) {
67 disorder_error(errno, "error calling mmap on %s", path);
70 *lengthp = sb.st_size;
78 static long tl_mp3(const char *path) {
83 if(!(base = mmap_file(path, &length))) return -1;
84 b.duration = mad_timer_zero;
85 scan_mp3(base, length, &b);
87 return b.duration.seconds + !!b.duration.fraction;
90 static long tl_ogg(const char *path) {
96 if(!(fp = fopen(path, "rb"))) goto error;
97 if(ov_open(fp, &vf, 0, 0)) goto error;
99 length = ov_time_total(&vf, -1);
107 static long tl_wav(const char *path) {
109 int err, sample_frame_size;
112 if((err = wav_init(f, path))) {
113 disorder_error(err, "error opening %s", path);
116 sample_frame_size = (f->bits + 7) / 8 * f->channels;
117 if(sample_frame_size) {
118 const long long n_samples = f->datasize / sample_frame_size;
119 duration = (n_samples + f->rate - 1) / f->rate;
126 /* libFLAC's "simplified" interface is rather heavyweight... */
133 static void flac_metadata(const FLAC__FileDecoder attribute((unused)) *decoder,
134 const FLAC__StreamMetadata *metadata,
136 struct flac_state *const state = client_data;
137 const FLAC__StreamMetadata_StreamInfo *const stream_info
138 = &metadata->data.stream_info;
140 if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO)
141 /* FLAC uses 0 to mean unknown and conveniently so do we */
142 state->duration = (stream_info->total_samples
143 + stream_info->sample_rate - 1)
144 / stream_info->sample_rate;
147 static void flac_error(const FLAC__FileDecoder attribute((unused)) *decoder,
148 FLAC__StreamDecoderErrorStatus status,
150 const struct flac_state *const state = client_data;
152 disorder_error(0, "error decoding %s: %s", state->path,
153 FLAC__StreamDecoderErrorStatusString[status]);
156 static FLAC__StreamDecoderWriteStatus flac_write
157 (const FLAC__FileDecoder attribute((unused)) *decoder,
158 const FLAC__Frame attribute((unused)) *frame,
159 const FLAC__int32 attribute((unused)) *const buffer_[],
160 void attribute((unused)) *client_data) {
161 const struct flac_state *const state = client_data;
163 if(state->duration >= 0)
164 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
166 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
169 static long tl_flac(const char *path) {
170 struct flac_state state[1];
172 state->duration = -1; /* error */
174 #if HAVE_FLAC_FILE_DECODER_H
176 FLAC__FileDecoder *fd = 0;
177 FLAC__FileDecoderState fs;
179 if(!(fd = FLAC__file_decoder_new())) {
180 disorder_error(0, "FLAC__file_decoder_new failed");
183 if(!(FLAC__file_decoder_set_filename(fd, path))) {
184 disorder_error(0, "FLAC__file_set_filename failed");
187 FLAC__file_decoder_set_metadata_callback(fd, flac_metadata);
188 FLAC__file_decoder_set_error_callback(fd, flac_error);
189 FLAC__file_decoder_set_write_callback(fd, flac_write);
190 FLAC__file_decoder_set_client_data(fd, state);
191 if((fs = FLAC__file_decoder_init(fd))) {
192 disorder_error(0, "FLAC__file_decoder_init: %s",
193 FLAC__FileDecoderStateString[fs]);
196 FLAC__file_decoder_process_until_end_of_metadata(fd);
199 FLAC__file_decoder_delete(fd);
203 FLAC__StreamDecoder *sd = 0;
204 FLAC__StreamDecoderInitStatus is;
206 if(!(sd = FLAC__stream_decoder_new())) {
207 disorder_error(0, "FLAC__stream_decoder_new failed");
210 if((is = FLAC__stream_decoder_init_file(sd, path, flac_write, flac_metadata,
211 flac_error, state))) {
212 disorder_error(0, "FLAC__stream_decoder_init_file %s: %s",
213 path, FLAC__StreamDecoderInitStatusString[is]);
216 FLAC__stream_decoder_process_until_end_of_metadata(sd);
219 FLAC__stream_decoder_delete(sd);
222 return state->duration;
225 static const struct {
227 long (*fn)(const char *path);
229 { ".FLAC", tl_flac },
233 { ".flac", tl_flac },
238 #define N_FILE_FORMATS (int)(sizeof file_formats / sizeof *file_formats)
240 long disorder_tracklength(const char attribute((unused)) *track,
242 const char *ext = strrchr(path, '.');
243 int l, r, m = 0, c = 0; /* quieten compiler */
247 r = N_FILE_FORMATS - 1;
248 while(l <= r && (c = strcmp(ext, file_formats[m = (l + r) / 2].ext)))
254 return file_formats[m].fn(path);