diff options
Diffstat (limited to 'firmware/export/mp3data.h')
| -rw-r--r-- | firmware/export/mp3data.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/firmware/export/mp3data.h b/firmware/export/mp3data.h new file mode 100644 index 0000000..a1018eb --- /dev/null +++ b/firmware/export/mp3data.h @@ -0,0 +1,66 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2002 by Linus Nielsen Feltzing + * + * 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 _MP3DATA_H_ +#define _MP3DATA_H_ + +#define MPEG_VERSION2_5 0 +#define MPEG_VERSION1 1 +#define MPEG_VERSION2 2 + +struct mp3info { + /* Standard MP3 frame header fields */ + int version; + int layer; + bool protection; + int bitrate; + int frequency; + int padding; + int channel_mode; + int mode_extension; + int emphasis; + int frame_size; /* Frame size in bytes */ + int frame_time; /* Frame duration in milliseconds */ + + bool is_vbr; /* True if the file is VBR */ + bool has_toc; /* True if there is a VBR header in the file */ + bool is_xing_vbr; /* True if the VBR header is of Xing type */ + bool is_vbri_vbr; /* True if the VBR header is of VBRI type */ + unsigned char toc[100]; + int frame_count; /* Number of frames in the file (if VBR) */ + int byte_count; /* File size in bytes */ + int file_time; /* Length of the whole file in milliseconds */ + int xing_header_pos; +}; + +/* Xing header information */ +#define VBR_FRAMES_FLAG 0x01 +#define VBR_BYTES_FLAG 0x02 +#define VBR_TOC_FLAG 0x04 + + +unsigned long find_next_frame(int fd, int *offset, int max_offset, unsigned long last_header); +int get_mp3file_info(int fd, struct mp3info *info); +int count_mp3_frames(int fd, int startpos, int filesize, + void (*progressfunc)(int)); +int create_xing_header(int fd, int startpos, int filesize, + unsigned char *buf, int num_frames, + void (*progressfunc)(int)); + +#endif |