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 3 of the License, or
8 * (at your option) any later version.
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.
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/>.
24 #include <sys/types.h>
31 #include <vorbis/vorbisfile.h>
33 /* libFLAC has had an API change and stupidly taken away the old API */
34 #if HAVE_FLAC_FILE_DECODER_H
35 # include <FLAC/file_decoder.h>
37 # include <FLAC/stream_decoder.h>
38 #define FLAC__FileDecoder FLAC__StreamDecoder
39 #define FLAC__FileDecoderState FLAC__StreamDecoderState
48 static void *mmap_file(const char *path, size_t *lengthp) {
53 if((fd = open(path, O_RDONLY)) < 0) {
54 disorder_error(errno, "error opening %s", path);
57 if(fstat(fd, &sb) < 0) {
58 disorder_error(errno, "error calling stat on %s", path);
61 if(sb.st_size == 0) /* can't map 0-length files */
63 if((base = mmap(0, sb.st_size, PROT_READ,
64 MAP_SHARED, fd, 0)) == (void *)-1) {
65 disorder_error(errno, "error calling mmap on %s", path);
68 *lengthp = sb.st_size;
76 static long tl_mp3(const char *path) {
81 if(!(base = mmap_file(path, &length))) return -1;
82 b.duration = mad_timer_zero;
83 scan_mp3(base, length, &b);
85 return b.duration.seconds + !!b.duration.fraction;
88 static long tl_ogg(const char *path) {
94 if(!(fp = fopen(path, "rb"))) goto error;
95 if(ov_open(fp, &vf, 0, 0)) goto error;
97 length = ov_time_total(&vf, -1);
105 static long tl_wav(const char *path) {
107 int err, sample_frame_size;
110 if((err = wav_init(f, path))) {
111 disorder_error(err, "error opening %s", path);
114 sample_frame_size = (f->bits + 7) / 8 * f->channels;
115 if(sample_frame_size) {
116 const long long n_samples = f->datasize / sample_frame_size;
117 duration = (n_samples + f->rate - 1) / f->rate;
124 /* libFLAC's "simplified" interface is rather heavyweight... */
131 static void flac_metadata(const FLAC__FileDecoder attribute((unused)) *decoder,
132 const FLAC__StreamMetadata *metadata,
134 struct flac_state *const state = client_data;
135 const FLAC__StreamMetadata_StreamInfo *const stream_info
136 = &metadata->data.stream_info;
138 if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO)
139 /* FLAC uses 0 to mean unknown and conveniently so do we */
140 state->duration = (stream_info->total_samples
141 + stream_info->sample_rate - 1)
142 / stream_info->sample_rate;
145 static void flac_error(const FLAC__FileDecoder attribute((unused)) *decoder,
146 FLAC__StreamDecoderErrorStatus status,
148 const struct flac_state *const state = client_data;
150 disorder_error(0, "error decoding %s: %s", state->path,
151 FLAC__StreamDecoderErrorStatusString[status]);
154 static FLAC__StreamDecoderWriteStatus flac_write
155 (const FLAC__FileDecoder attribute((unused)) *decoder,
156 const FLAC__Frame attribute((unused)) *frame,
157 const FLAC__int32 attribute((unused)) *const buffer_[],
158 void attribute((unused)) *client_data) {
159 const struct flac_state *const state = client_data;
161 if(state->duration >= 0)
162 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
164 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
167 static long tl_flac(const char *path) {
168 struct flac_state state[1];
170 state->duration = -1; /* error */
172 #if HAVE_FLAC_FILE_DECODER_H
174 FLAC__FileDecoder *fd = 0;
175 FLAC__FileDecoderState fs;
177 if(!(fd = FLAC__file_decoder_new())) {
178 disorder_error(0, "FLAC__file_decoder_new failed");
181 if(!(FLAC__file_decoder_set_filename(fd, path))) {
182 disorder_error(0, "FLAC__file_set_filename failed");
185 FLAC__file_decoder_set_metadata_callback(fd, flac_metadata);
186 FLAC__file_decoder_set_error_callback(fd, flac_error);
187 FLAC__file_decoder_set_write_callback(fd, flac_write);
188 FLAC__file_decoder_set_client_data(fd, state);
189 if((fs = FLAC__file_decoder_init(fd))) {
190 disorder_error(0, "FLAC__file_decoder_init: %s",
191 FLAC__FileDecoderStateString[fs]);
194 FLAC__file_decoder_process_until_end_of_metadata(fd);
197 FLAC__file_decoder_delete(fd);
201 FLAC__StreamDecoder *sd = 0;
202 FLAC__StreamDecoderInitStatus is;
204 if(!(sd = FLAC__stream_decoder_new())) {
205 disorder_error(0, "FLAC__stream_decoder_new failed");
208 if((is = FLAC__stream_decoder_init_file(sd, path, flac_write, flac_metadata,
209 flac_error, state))) {
210 disorder_error(0, "FLAC__stream_decoder_init_file %s: %s",
211 path, FLAC__StreamDecoderInitStatusString[is]);
214 FLAC__stream_decoder_process_until_end_of_metadata(sd);
217 FLAC__stream_decoder_delete(sd);
220 return state->duration;
223 static const struct {
225 long (*fn)(const char *path);
227 { ".FLAC", tl_flac },
231 { ".flac", tl_flac },
236 #define N_FILE_FORMATS (int)(sizeof file_formats / sizeof *file_formats)
238 long disorder_tracklength(const char attribute((unused)) *track,
240 const char *ext = strrchr(path, '.');
241 int l, r, m = 0, c = 0; /* quieten compiler */
245 r = N_FILE_FORMATS - 1;
246 while(l <= r && (c = strcmp(ext, file_formats[m = (l + r) / 2].ext)))
252 return file_formats[m].fn(path);