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 #include <FLAC/file_decoder.h>
42 static void *mmap_file(const char *path
, size_t *lengthp
) {
47 if((fd
= open(path
, O_RDONLY
)) < 0) {
48 disorder_error(errno
, "error opening %s", path
);
51 if(fstat(fd
, &sb
) < 0) {
52 disorder_error(errno
, "error calling stat on %s", path
);
55 if(sb
.st_size
== 0) /* can't map 0-length files */
57 if((base
= mmap(0, sb
.st_size
, PROT_READ
,
58 MAP_SHARED
, fd
, 0)) == (void *)-1) {
59 disorder_error(errno
, "error calling mmap on %s", path
);
62 *lengthp
= sb
.st_size
;
70 static long tl_mp3(const char *path
) {
75 if(!(base
= mmap_file(path
, &length
))) return -1;
76 b
.duration
= mad_timer_zero
;
77 scan_mp3(base
, length
, &b
);
79 return b
.duration
.seconds
+ !!b
.duration
.fraction
;
82 static long tl_ogg(const char *path
) {
88 if(!(fp
= fopen(path
, "rb"))) goto error
;
89 if(ov_open(fp
, &vf
, 0, 0)) goto error
;
91 length
= ov_time_total(&vf
, -1);
99 static long tl_wav(const char *path
) {
101 int err
, sample_frame_size
;
104 if((err
= wav_init(f
, path
))) {
105 disorder_error(err
, "error opening %s", path
);
108 sample_frame_size
= (f
->bits
+ 7) / 8 * f
->channels
;
109 if(sample_frame_size
) {
110 const long long n_samples
= f
->datasize
/ sample_frame_size
;
111 duration
= (n_samples
+ f
->rate
- 1) / f
->rate
;
118 /* libFLAC's "simplified" interface is rather heavyweight... */
125 static void flac_metadata(const FLAC__FileDecoder
attribute((unused
)) *decoder
,
126 const FLAC__StreamMetadata
*metadata
,
128 struct flac_state
*const state
= client_data
;
129 const FLAC__StreamMetadata_StreamInfo
*const stream_info
130 = &metadata
->data
.stream_info
;
132 if(metadata
->type
== FLAC__METADATA_TYPE_STREAMINFO
)
133 /* FLAC uses 0 to mean unknown and conveniently so do we */
134 state
->duration
= (stream_info
->total_samples
135 + stream_info
->sample_rate
- 1)
136 / stream_info
->sample_rate
;
139 static void flac_error(const FLAC__FileDecoder
attribute((unused
)) *decoder
,
140 FLAC__StreamDecoderErrorStatus status
,
142 const struct flac_state
*const state
= client_data
;
144 disorder_error(0, "error decoding %s: %s", state
->path
,
145 FLAC__StreamDecoderErrorStatusString
[status
]);
148 static FLAC__StreamDecoderWriteStatus flac_write
149 (const FLAC__FileDecoder
attribute((unused
)) *decoder
,
150 const FLAC__Frame
attribute((unused
)) *frame
,
151 const FLAC__int32
attribute((unused
)) *const buffer_
[],
152 void attribute((unused
)) *client_data
) {
153 const struct flac_state
*const state
= client_data
;
155 if(state
->duration
>= 0)
156 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT
;
158 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE
;
161 static long tl_flac(const char *path
) {
162 FLAC__FileDecoder
*fd
= 0;
163 FLAC__FileDecoderState fs
;
164 struct flac_state state
[1];
166 state
->duration
= -1; /* error */
168 if(!(fd
= FLAC__file_decoder_new())) {
169 disorder_error(0, "FLAC__file_decoder_new failed");
172 if(!(FLAC__file_decoder_set_filename(fd
, path
))) {
173 disorder_error(0, "FLAC__file_set_filename failed");
176 FLAC__file_decoder_set_metadata_callback(fd
, flac_metadata
);
177 FLAC__file_decoder_set_error_callback(fd
, flac_error
);
178 FLAC__file_decoder_set_write_callback(fd
, flac_write
);
179 FLAC__file_decoder_set_client_data(fd
, state
);
180 if((fs
= FLAC__file_decoder_init(fd
))) {
181 disorder_error(0, "FLAC__file_decoder_init: %s",
182 FLAC__FileDecoderStateString
[fs
]);
185 FLAC__file_decoder_process_until_end_of_metadata(fd
);
188 FLAC__file_decoder_delete(fd
);
189 return state
->duration
;
192 static const struct {
194 long (*fn
)(const char *path
);
196 { ".FLAC", tl_flac
},
200 { ".flac", tl_flac
},
205 #define N_FILE_FORMATS (int)(sizeof file_formats / sizeof *file_formats)
207 long disorder_tracklength(const char attribute((unused
)) *track
,
209 const char *ext
= strrchr(path
, '.');
210 int l
, r
, m
= 0, c
= 0; /* quieten compiler */
214 r
= N_FILE_FORMATS
- 1;
215 while(l
<= r
&& (c
= strcmp(ext
, file_formats
[m
= (l
+ r
) / 2].ext
)))
221 return file_formats
[m
].fn(path
);