1 //=========================================================================
2 // FILENAME : tagutils-flc.c
3 // DESCRIPTION : FLAC metadata reader
4 //=========================================================================
5 // Copyright (c) 2008- NETGEAR, Inc. All Rights Reserved.
6 //=========================================================================
7
8 /*
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 static int
_get_flctags(char * filename,struct song_metadata * psong)24 _get_flctags(char *filename, struct song_metadata *psong)
25 {
26 FLAC__Metadata_SimpleIterator *iterator = 0;
27 FLAC__StreamMetadata *block;
28 unsigned int sec, ms;
29 int i;
30 int err = 0;
31
32 if(!(iterator = FLAC__metadata_simple_iterator_new()))
33 {
34 DPRINTF(E_FATAL, L_SCANNER, "Out of memory while FLAC__metadata_simple_iterator_new()\n");
35 return -1;
36 }
37
38 if(!FLAC__metadata_simple_iterator_init(iterator, filename, true, true))
39 {
40 DPRINTF(E_ERROR, L_SCANNER, "Cannot extract tag from %s [%s]\n", filename,
41 FLAC__Metadata_SimpleIteratorStatusString[FLAC__metadata_simple_iterator_status(iterator)]);
42 goto _exit;
43 }
44
45 do {
46 if(!(block = FLAC__metadata_simple_iterator_get_block(iterator)))
47 {
48 DPRINTF(E_ERROR, L_SCANNER, "Cannot extract tag from %s\n", filename);
49 err = -1;
50 goto _exit;
51 }
52
53 switch(block->type)
54 {
55 case FLAC__METADATA_TYPE_STREAMINFO:
56 if (!block->data.stream_info.sample_rate)
57 break; /* Info is crap, avoid div-by-zero. */
58 sec = (unsigned int)(block->data.stream_info.total_samples /
59 block->data.stream_info.sample_rate);
60 ms = (unsigned int)(((block->data.stream_info.total_samples %
61 block->data.stream_info.sample_rate) * 1000) /
62 block->data.stream_info.sample_rate);
63 if ((sec == 0) && (ms == 0))
64 break; /* Info is crap, escape div-by-zero. */
65 psong->song_length = (sec * 1000) + ms;
66 psong->bitrate = (((uint64_t)(psong->file_size) * 1000) / (psong->song_length / 8));
67 psong->samplerate = block->data.stream_info.sample_rate;
68 psong->channels = block->data.stream_info.channels;
69 break;
70
71 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
72 for(i = 0; i < block->data.vorbis_comment.num_comments; i++)
73 {
74 vc_scan(psong,
75 (char*)block->data.vorbis_comment.comments[i].entry,
76 block->data.vorbis_comment.comments[i].length);
77 }
78 break;
79 #if FLAC_API_VERSION_CURRENT >= 10
80 case FLAC__METADATA_TYPE_PICTURE:
81 if (psong->image) {
82 DPRINTF(E_MAXDEBUG, L_SCANNER, "Ignoring additional image [%s]\n", filename);
83 break;
84 }
85 psong->image_size = block->data.picture.data_length;
86 if((psong->image = malloc(psong->image_size)))
87 memcpy(psong->image, block->data.picture.data, psong->image_size);
88 else
89 DPRINTF(E_ERROR, L_SCANNER, "Out of memory [%s]\n", filename);
90 break;
91 #endif
92 default:
93 break;
94 }
95 FLAC__metadata_object_delete(block);
96 }
97 while(FLAC__metadata_simple_iterator_next(iterator));
98
99 _exit:
100 if(iterator)
101 FLAC__metadata_simple_iterator_delete(iterator);
102
103 return err;
104 }
105
106 static int
_get_flcfileinfo(char * filename,struct song_metadata * psong)107 _get_flcfileinfo(char *filename, struct song_metadata *psong)
108 {
109 psong->lossless = 1;
110 psong->vbr_scale = 1;
111
112 return 0;
113 }
114