diff options
Diffstat (limited to 'apps/metadata/flac.c')
-rw-r--r-- | apps/metadata/flac.c | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/apps/metadata/flac.c b/apps/metadata/flac.c deleted file mode 100644 index 29937173fd..0000000000 --- a/apps/metadata/flac.c +++ /dev/null | |||
@@ -1,127 +0,0 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2005 Dave Chapman | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #include <stdio.h> | ||
22 | #include <string.h> | ||
23 | #include <stdlib.h> | ||
24 | #include <ctype.h> | ||
25 | #include <inttypes.h> | ||
26 | |||
27 | #include "system.h" | ||
28 | #include "metadata.h" | ||
29 | #include "metadata_common.h" | ||
30 | #include "metadata_parsers.h" | ||
31 | #include "logf.h" | ||
32 | |||
33 | bool get_flac_metadata(int fd, struct mp3entry* id3) | ||
34 | { | ||
35 | /* A simple parser to read vital metadata from a FLAC file - length, | ||
36 | * frequency, bitrate etc. This code should either be moved to a | ||
37 | * seperate file, or discarded in favour of the libFLAC code. | ||
38 | * The FLAC stream specification can be found at | ||
39 | * http://flac.sourceforge.net/format.html#stream | ||
40 | */ | ||
41 | |||
42 | /* Use the trackname part of the id3 structure as a temporary buffer */ | ||
43 | unsigned char* buf = (unsigned char *)id3->path; | ||
44 | bool last_metadata = false; | ||
45 | bool rc = false; | ||
46 | |||
47 | if (!skip_id3v2(fd, id3) || (read(fd, buf, 4) < 4)) | ||
48 | { | ||
49 | return rc; | ||
50 | } | ||
51 | |||
52 | if (memcmp(buf, "fLaC", 4) != 0) | ||
53 | { | ||
54 | return rc; | ||
55 | } | ||
56 | |||
57 | while (!last_metadata) | ||
58 | { | ||
59 | unsigned long i; | ||
60 | int type; | ||
61 | |||
62 | if (read(fd, buf, 4) < 0) | ||
63 | { | ||
64 | return rc; | ||
65 | } | ||
66 | |||
67 | last_metadata = buf[0] & 0x80; | ||
68 | type = buf[0] & 0x7f; | ||
69 | /* The length of the block */ | ||
70 | i = (buf[1] << 16) | (buf[2] << 8) | buf[3]; | ||
71 | |||
72 | if (type == 0) /* 0 is the STREAMINFO block */ | ||
73 | { | ||
74 | unsigned long totalsamples; | ||
75 | |||
76 | if (i >= sizeof(id3->path) || read(fd, buf, i) < 0) | ||
77 | { | ||
78 | return rc; | ||
79 | } | ||
80 | |||
81 | id3->vbr = true; /* All FLAC files are VBR */ | ||
82 | id3->filesize = filesize(fd); | ||
83 | id3->frequency = (buf[10] << 12) | (buf[11] << 4) | ||
84 | | ((buf[12] & 0xf0) >> 4); | ||
85 | rc = true; /* Got vital metadata */ | ||
86 | |||
87 | /* totalsamples is a 36-bit field, but we assume <= 32 bits are used */ | ||
88 | totalsamples = get_long_be(&buf[14]); | ||
89 | |||
90 | if(totalsamples > 0) | ||
91 | { | ||
92 | /* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */ | ||
93 | id3->length = ((int64_t) totalsamples * 1000) / id3->frequency; | ||
94 | id3->bitrate = (id3->filesize * 8) / id3->length; | ||
95 | } | ||
96 | else if (totalsamples == 0) | ||
97 | { | ||
98 | id3->length = 0; | ||
99 | id3->bitrate = 0; | ||
100 | } | ||
101 | else | ||
102 | { | ||
103 | logf("flac length invalid!"); | ||
104 | return false; | ||
105 | } | ||
106 | |||
107 | } | ||
108 | else if (type == 4) /* 4 is the VORBIS_COMMENT block */ | ||
109 | { | ||
110 | /* The next i bytes of the file contain the VORBIS COMMENTS. */ | ||
111 | if (read_vorbis_tags(fd, id3, i) == 0) | ||
112 | { | ||
113 | return rc; | ||
114 | } | ||
115 | } | ||
116 | else if (!last_metadata) | ||
117 | { | ||
118 | /* Skip to next metadata block */ | ||
119 | if (lseek(fd, i, SEEK_CUR) < 0) | ||
120 | { | ||
121 | return rc; | ||
122 | } | ||
123 | } | ||
124 | } | ||
125 | |||
126 | return true; | ||
127 | } | ||