From 51b45d56029eb8b928be64fc50332f3ba10e0228 Mon Sep 17 00:00:00 2001 From: Björn Stenberg Date: Wed, 15 Oct 2008 06:38:51 +0000 Subject: Split id3.c/h into metadata.c/h and metadata/mp3.c. Updated all references. Moved mp3data.c/h from firmware to apps. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18814 a1c6a512-1295-4272-9138-f99709370657 --- apps/mp3data.h | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 apps/mp3data.h (limited to 'apps/mp3data.h') diff --git a/apps/mp3data.h b/apps/mp3data.h new file mode 100644 index 0000000000..2a6a27ac2d --- /dev/null +++ b/apps/mp3data.h @@ -0,0 +1,83 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2002 by Linus Nielsen Feltzing + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * 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_VERSION1 0 +#define MPEG_VERSION2 1 +#define MPEG_VERSION2_5 2 + +struct mp3info { + /* Standard MP3 frame header fields */ + int version; + int layer; + bool protection; + int bitrate; + long frequency; + int padding; + int channel_mode; + int mode_extension; + int emphasis; + int frame_size; /* Frame size in bytes */ + int frame_samples; /* Samples per frame */ + int ft_num; /* Numerator of frametime in milliseconds */ + int ft_den; /* Denominator of frametime 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]; + unsigned long frame_count; /* Number of frames in the file (if VBR) */ + unsigned long byte_count; /* File size in bytes */ + unsigned long file_time; /* Length of the whole file in milliseconds */ + unsigned long vbr_header_pos; + int enc_delay; /* Encoder delay, fetched from LAME header */ + int enc_padding; /* Padded samples added to last frame. LAME header */ +}; + +/* Xing header information */ +#define VBR_FRAMES_FLAG 0x01 +#define VBR_BYTES_FLAG 0x02 +#define VBR_TOC_FLAG 0x04 +#define VBR_QUALITY_FLAG 0x08 + +#define MAX_XING_HEADER_SIZE 576 + +unsigned long find_next_frame(int fd, long *offset, long max_offset, + unsigned long last_header); +unsigned long mem_find_next_frame(int startpos, long *offset, long 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, long startpos, long filesize, + unsigned char *buf, unsigned long num_frames, + unsigned long rec_time, unsigned long header_template, + void (*progressfunc)(int), bool generate_toc); + +extern unsigned long bytes2int(unsigned long b0, + unsigned long b1, + unsigned long b2, + unsigned long b3); + +#endif -- cgit v1.2.3