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rockbox/firmware/export/id3.h
Thom Johansen c0f7eb9f9d FS #8680. MOD codec by Rainer Sinsch. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17595 a1c6a512-1295-4272-9138-f99709370657
2008-05-21 11:19:58 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Daniel Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef ID3_H
#define ID3_H
#include <stdbool.h>
#include "config.h"
#include "file.h"
#define ID3V2_BUF_SIZE 300
/* Audio file types. */
/* NOTE: The values of the AFMT_* items are used for the %fc tag in the WPS
- so new entries MUST be added to the end to maintain compatibility.
*/
enum
{
AFMT_UNKNOWN = 0, /* Unknown file format */
/* start formats */
AFMT_MPA_L1, /* MPEG Audio layer 1 */
AFMT_MPA_L2, /* MPEG Audio layer 2 */
AFMT_MPA_L3, /* MPEG Audio layer 3 */
#if CONFIG_CODEC == SWCODEC
AFMT_AIFF, /* Audio Interchange File Format */
AFMT_PCM_WAV, /* Uncompressed PCM in a WAV file */
AFMT_OGG_VORBIS, /* Ogg Vorbis */
AFMT_FLAC, /* FLAC */
AFMT_MPC, /* Musepack */
AFMT_A52, /* A/52 (aka AC3) audio */
AFMT_WAVPACK, /* WavPack */
AFMT_ALAC, /* Apple Lossless Audio Codec */
AFMT_AAC, /* Advanced Audio Coding (AAC) in M4A container */
AFMT_SHN, /* Shorten */
AFMT_SID, /* SID File Format */
AFMT_ADX, /* ADX File Format */
AFMT_NSF, /* NESM (NES Sound Format) */
AFMT_SPEEX, /* Ogg Speex speech */
AFMT_SPC, /* SPC700 save state */
AFMT_APE, /* Monkey's Audio (APE) */
AFMT_WMA, /* WMAV1/V2 in ASF */
AFMT_MOD, /* Amiga MOD File Format */
#endif
/* add new formats at any index above this line to have a sensible order -
specified array index inits are used */
/* format arrays defined in id3.c */
AFMT_NUM_CODECS,
#if CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING)
/* masks to decompose parts */
CODEC_AFMT_MASK = 0x0fff,
CODEC_TYPE_MASK = 0x7000,
/* switch for specifying codec type when requesting a filename */
CODEC_TYPE_DECODER = (0 << 12), /* default */
CODEC_TYPE_ENCODER = (1 << 12),
#endif /* CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING) */
};
#if CONFIG_CODEC == SWCODEC
#define CODEC_EXTENSION "codec"
#ifdef HAVE_RECORDING
#define ENCODER_SUFFIX "_enc"
enum rec_format_indexes
{
__REC_FORMAT_START_INDEX = -1,
/* start formats */
REC_FORMAT_PCM_WAV,
REC_FORMAT_AIFF,
REC_FORMAT_WAVPACK,
REC_FORMAT_MPA_L3,
/* add new formats at any index above this line to have a sensible order -
specified array index inits are used
REC_FORMAT_CFG_NUM_BITS should allocate enough bits to hold the range
REC_FORMAT_CFG_VALUE_LIST should be in same order as indexes
*/
REC_NUM_FORMATS,
REC_FORMAT_DEFAULT = REC_FORMAT_PCM_WAV,
REC_FORMAT_CFG_NUM_BITS = 2
};
#define REC_FORMAT_CFG_VAL_LIST "wave,aiff,wvpk,mpa3"
/* get REC_FORMAT_* corresponding AFMT_* */
extern const int rec_format_afmt[REC_NUM_FORMATS];
/* get AFMT_* corresponding REC_FORMAT_* */
extern const int afmt_rec_format[AFMT_NUM_CODECS];
#define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
{ label, root_fname, enc_root_fname, ext_list }
#else /* !HAVE_RECORDING */
#define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
{ label, root_fname, ext_list }
#endif /* HAVE_RECORDING */
#else /* !SWCODEC */
#define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
{ label, ext_list }
#endif /* CONFIG_CODEC == SWCODEC */
/* record describing the audio format */
struct afmt_entry
{
char label[8]; /* format label */
#if CONFIG_CODEC == SWCODEC
char *codec_root_fn; /* root codec filename (sans _enc and .codec) */
#ifdef HAVE_RECORDING
char *codec_enc_root_fn; /* filename of encoder codec */
#endif
#endif
char *ext_list; /* double NULL terminated extension
list for type with the first as
the default for recording */
};
/* database of labels and codecs. add formats per above enum */
extern const struct afmt_entry audio_formats[AFMT_NUM_CODECS];
struct mp3entry {
char path[MAX_PATH];
char* title;
char* artist;
char* album;
char* genre_string;
char* disc_string;
char* track_string;
char* year_string;
char* composer;
char* comment;
char* albumartist;
char* grouping;
int discnum;
int tracknum;
int version;
int layer;
int year;
unsigned char id3version;
unsigned int codectype;
unsigned int bitrate;
unsigned long frequency;
unsigned long id3v2len;
unsigned long id3v1len;
unsigned long first_frame_offset; /* Byte offset to first real MP3 frame.
Used for skipping leading garbage to
avoid gaps between tracks. */
unsigned long vbr_header_pos;
unsigned long filesize; /* without headers; in bytes */
unsigned long length; /* song length in ms */
unsigned long elapsed; /* ms played */
int lead_trim; /* Number of samples to skip at the beginning */
int tail_trim; /* Number of samples to remove from the end */
/* Added for Vorbis */
unsigned long samples; /* number of samples in track */
/* MP3 stream specific info */
unsigned long frame_count; /* number of frames in the file (if VBR) */
/* Used for A52/AC3 */
unsigned long bytesperframe; /* number of bytes per frame (if CBR) */
/* Xing VBR fields */
bool vbr;
bool has_toc; /* True if there is a VBR header in the file */
unsigned char toc[100]; /* table of contents */
/* these following two fields are used for local buffering */
char id3v2buf[ID3V2_BUF_SIZE];
char id3v1buf[4][92];
/* resume related */
unsigned long offset; /* bytes played */
int index; /* playlist index */
/* runtime database fields */
long tagcache_idx; /* 0=invalid, otherwise idx+1 */
int rating;
int score;
long playcount;
long lastplayed;
long playtime;
/* replaygain support */
#if CONFIG_CODEC == SWCODEC
char* track_gain_string;
char* album_gain_string;
long track_gain; /* 7.24 signed fixed point. 0 for no gain. */
long album_gain;
long track_peak; /* 7.24 signed fixed point. 0 for no peak. */
long album_peak;
#endif
/* Cuesheet support */
int cuesheet_type; /* 0: none, 1: external, 2: embedded */
};
enum {
ID3_VER_1_0 = 1,
ID3_VER_1_1,
ID3_VER_2_2,
ID3_VER_2_3,
ID3_VER_2_4
};
bool get_mp3_metadata(int fd, struct mp3entry *entry, const char *filename);
bool mp3info(struct mp3entry *entry, const char *filename);
char* id3_get_num_genre(unsigned int genre_num);
int getid3v2len(int fd);
void adjust_mp3entry(struct mp3entry *entry, void *dest, const void *orig);
void copy_mp3entry(struct mp3entry *dest, const struct mp3entry *orig);
#endif
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