apps/metadata/metadata_common.h

   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 "metadata.h"
  22
  23 #ifdef ROCKBOX_BIG_ENDIAN
  24 #define IS_BIG_ENDIAN 1
  25 #else
  26 #define IS_BIG_ENDIAN 0
  27 #endif
  28
  29 #define TAG_NAME_LENGTH             32
  30 #define TAG_VALUE_LENGTH            128
  31
  32 #define FOURCC(a,b,c,d) (((a)<<24) | ((b) << 16) | ((c) << 8) | (d))
  33
  34 enum tagtype { TAGTYPE_APE = 1, TAGTYPE_VORBIS };
  35
  36 bool read_ape_tags(int fd, struct mp3entry* id3);
  37 long read_vorbis_tags(int fd, struct mp3entry *id3,
  38     long tag_remaining);
  39
  40 bool skip_id3v2(int fd, struct mp3entry *id3);
  41 long read_string(int fd, char* buf, long buf_size, int eos, long size);
  42
  43 int read_uint8(int fd, uint8_t* buf);
  44 #ifdef ROCKBOX_BIG_ENDIAN
  45 #define read_uint16be(fd,buf) read((fd), (buf), 2)
  46 #define read_uint32be(fd,buf) read((fd), (buf), 4)
  47 #define read_uint64be(fd,buf) read((fd), (buf), 8)
  48 int read_uint16le(int fd, uint16_t* buf);
  49 int read_uint32le(int fd, uint32_t* buf);
  50 int read_uint64le(int fd, uint64_t* buf);
  51 #else
  52 int read_uint16be(int fd, uint16_t* buf);
  53 int read_uint32be(int fd, uint32_t* buf);
  54 int read_uint64be(int fd, uint64_t* buf);
  55 #define read_uint16le(fd,buf) read((fd), (buf), 2)
  56 #define read_uint32le(fd,buf) read((fd), (buf), 4)
  57 #define read_uint64le(fd,buf) read((fd), (buf), 8)
  58 #endif
  59
  60 uint64_t get_uint64_le(void* buf);
  61 unsigned long get_long_le(void* buf);
  62 unsigned short get_short_le(void* buf);
  63 unsigned long get_long_be(void* buf);
  64 long get_slong(void* buf);
  65 unsigned long get_itunes_int32(char* value, int count);
  66 long parse_tag(const char* name, char* value, struct mp3entry* id3,
  67     char* buf, long buf_remaining, enum tagtype type);