source: roaraudio/libroar/file.c @ 5248:0133acb5ae31

Last change on this file since 5248:0133acb5ae31 was 5224:0110eb2c5e00, checked in by phi, 12 years ago

added const keywords to roar_file_codecdetect()

File size: 3.2 KB
Line 
1//file.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2011
5 *
6 *  This file is part of libroar a part of RoarAudio,
7 *  a cross-platform sound system for both, home and professional use.
8 *  See README for details.
9 *
10 *  This file is free software; you can redistribute it and/or modify
11 *  it under the terms of the GNU General Public License version 3
12 *  as published by the Free Software Foundation.
13 *
14 *  libroar is distributed in the hope that it will be useful,
15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *  GNU General Public License for more details.
18 *
19 *  You should have received a copy of the GNU General Public License
20 *  along with this software; see the file COPYING.  If not, write to
21 *  the Free Software Foundation, 51 Franklin Street, Fifth Floor,
22 *  Boston, MA 02110-1301, USA.
23 *
24 *  NOTE for everyone want's to change something and send patches:
25 *  read README and HACKING! There a addition information on
26 *  the license of this document you need to read before you send
27 *  any patches.
28 *
29 *  NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
30 *  or libpulse*:
31 *  The libs libroaresd, libroararts and libroarpulse link this lib
32 *  and are therefore GPL. Because of this it may be illigal to use
33 *  them with any software that uses libesd, libartsc or libpulse*.
34 */
35
36#include "libroar.h"
37
38int roar_file_codecdetect(const char * buf, const int len) {
39 int codec = -1;
40
41 if ( len > 3 ) {
42  if ( strncmp(buf, "OggS", 4) == 0 ) {
43   codec = ROAR_CODEC_OGG_GENERAL;
44   if ( len > 32 ) { // this is 5 bytes after the end of the header
45    if ( strncmp(buf+28, "\177FLAC", 5) == 0 ) {
46     codec = ROAR_CODEC_OGG_FLAC;
47    } else if ( strncmp(buf+28, "Speex", 5) == 0 ) {
48     codec = ROAR_CODEC_OGG_SPEEX;
49    } else if ( len > 34 ) { // this is 7 bytes after the end of the header
50     if ( strncmp(buf+28, "\001vorbis", 7) == 0 )
51      codec = ROAR_CODEC_OGG_VORBIS;
52    }
53   }
54  } else if ( strncmp(buf, "MThd", 4) == 0 ) {
55   codec = ROAR_CODEC_MIDI_FILE;
56  } else if ( strncmp(buf, "RIFF", 4) == 0 ) {
57   if ( len > 15 ) {
58    if ( strncmp(buf+8, "WAVEfmt ", 8) == 0 )
59     codec = ROAR_CODEC_RIFF_WAVE;
60   }
61  } else if ( strncmp(buf, "Roar", 4) == 0 ) {
62   if ( len > ROAR_SPEEX_MAGIC_LEN ) {
63    if ( strncmp(buf, ROAR_SPEEX_MAGIC, ROAR_SPEEX_MAGIC_LEN) == 0 )
64     codec = ROAR_CODEC_ROAR_SPEEX;
65#if ROAR_SPEEX_MAGIC_LEN < ROAR_CELT_MAGIC_LEN
66   }
67   if ( len > ROAR_CELT_MAGIC_LEN ) {
68#endif
69    if ( strncmp(buf, ROAR_CELT_MAGIC_0, ROAR_CELT_MAGIC_LEN) == 0 ||
70         strncmp(buf, ROAR_CELT_MAGIC_1, ROAR_CELT_MAGIC_LEN) == 0  )
71     codec = ROAR_CODEC_ROAR_CELT;
72   }
73  } else if ( strncmp(buf, "fLaC", 4) == 0 ) {
74   codec = ROAR_CODEC_FLAC;
75  } else if ( strncmp(buf, ".snd", 4) == 0 ) {
76   codec = ROAR_CODEC_AU;
77  } else if ( len > 7 && strncmp(buf, "RAUM-CF0", 8) == 0 ) {
78   codec = ROAR_CODEC_RAUM;
79  }
80 }
81
82 return codec;
83}
84
85char  * roar_cdromdevice     (void) {
86 char * k;
87
88 if ( (k = getenv("CDDA_DEVICE")) != NULL )
89  return k;
90
91#ifdef ROAR_DEFAULT_CDROM
92 return ROAR_DEFAULT_CDROM;
93#endif
94
95 roar_err_set(ROAR_ERROR_NODEV);
96 return NULL;
97}
98
99//ll
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