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Diffstat (limited to 'lib/rbcodec/metadata/mp3data.h')
-rw-r--r-- | lib/rbcodec/metadata/mp3data.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/rbcodec/metadata/mp3data.h b/lib/rbcodec/metadata/mp3data.h new file mode 100644 index 0000000000..762c2f4583 --- /dev/null +++ b/lib/rbcodec/metadata/mp3data.h | |||
@@ -0,0 +1,89 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Linus Nielsen Feltzing | ||
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 | |||
22 | #ifndef _MP3DATA_H_ | ||
23 | #define _MP3DATA_H_ | ||
24 | |||
25 | #define MPEG_VERSION1 0 | ||
26 | #define MPEG_VERSION2 1 | ||
27 | #define MPEG_VERSION2_5 2 | ||
28 | |||
29 | #include <string.h> /* size_t */ | ||
30 | |||
31 | struct mp3info { | ||
32 | /* Standard MP3 frame header fields */ | ||
33 | int version; | ||
34 | int layer; | ||
35 | int bitrate; | ||
36 | long frequency; | ||
37 | int padding; | ||
38 | int channel_mode; | ||
39 | int frame_size; /* Frame size in bytes */ | ||
40 | int frame_samples;/* Samples per frame */ | ||
41 | int ft_num; /* Numerator of frametime in milliseconds */ | ||
42 | int ft_den; /* Denominator of frametime in milliseconds */ | ||
43 | |||
44 | bool is_vbr; /* True if the file is VBR */ | ||
45 | bool has_toc; /* True if there is a VBR header in the file */ | ||
46 | unsigned char toc[100]; | ||
47 | unsigned long frame_count; /* Number of frames in the file (if VBR) */ | ||
48 | unsigned long byte_count; /* File size in bytes */ | ||
49 | unsigned long file_time; /* Length of the whole file in milliseconds */ | ||
50 | int enc_delay; /* Encoder delay, fetched from LAME header */ | ||
51 | int enc_padding; /* Padded samples added to last frame. LAME header */ | ||
52 | }; | ||
53 | |||
54 | /* Xing header information */ | ||
55 | #define VBR_FRAMES_FLAG 0x01 | ||
56 | #define VBR_BYTES_FLAG 0x02 | ||
57 | #define VBR_TOC_FLAG 0x04 | ||
58 | #define VBR_QUALITY_FLAG 0x08 | ||
59 | |||
60 | #define MAX_XING_HEADER_SIZE 576 | ||
61 | |||
62 | unsigned long find_next_frame(int fd, | ||
63 | long *offset, | ||
64 | long max_offset, | ||
65 | unsigned long reference_header); | ||
66 | unsigned long mem_find_next_frame(int startpos, | ||
67 | long *offset, | ||
68 | long max_offset, | ||
69 | unsigned long reference_header, | ||
70 | unsigned char* buf, size_t buflen); | ||
71 | int get_mp3file_info(int fd, | ||
72 | struct mp3info *info); | ||
73 | |||
74 | int count_mp3_frames(int fd, int startpos, int filesize, | ||
75 | void (*progressfunc)(int), | ||
76 | unsigned char* buf, size_t buflen); | ||
77 | |||
78 | int create_xing_header(int fd, long startpos, long filesize, | ||
79 | unsigned char *buf, unsigned long num_frames, | ||
80 | unsigned long rec_time, unsigned long header_template, | ||
81 | void (*progressfunc)(int), bool generate_toc, | ||
82 | unsigned char *tempbuf, size_t tempbuflen ); | ||
83 | |||
84 | extern unsigned long bytes2int(unsigned long b0, | ||
85 | unsigned long b1, | ||
86 | unsigned long b2, | ||
87 | unsigned long b3); | ||
88 | |||
89 | #endif | ||