source: roaraudio/libroar/file.c @ 5221:aa6530a03260

Last change on this file since 5221:aa6530a03260 was 5221:aa6530a03260, checked in by phi, 12 years ago

Removed old functions from API (Closes: #186)

File size: 5.5 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
38#define BUFFERSIZE  8192
39#define BUFMAX     65536
40
41#ifdef ROAR_HAVE_IO_POSIX
42#define _CAN_OPERATE
43#endif
44
45int roar_file_codecdetect(char * buf, int len) {
46 int codec = -1;
47
48 if ( len > 3 ) {
49  if ( strncmp(buf, "OggS", 4) == 0 ) {
50   codec = ROAR_CODEC_OGG_GENERAL;
51   if ( len > 32 ) { // this is 5 bytes after the end of the header
52    if ( strncmp(buf+28, "\177FLAC", 5) == 0 ) {
53     codec = ROAR_CODEC_OGG_FLAC;
54    } else if ( strncmp(buf+28, "Speex", 5) == 0 ) {
55     codec = ROAR_CODEC_OGG_SPEEX;
56    } else if ( len > 34 ) { // this is 7 bytes after the end of the header
57     if ( strncmp(buf+28, "\001vorbis", 7) == 0 )
58      codec = ROAR_CODEC_OGG_VORBIS;
59    }
60   }
61  } else if ( strncmp(buf, "MThd", 4) == 0 ) {
62   codec = ROAR_CODEC_MIDI_FILE;
63  } else if ( strncmp(buf, "RIFF", 4) == 0 ) {
64   if ( len > 15 ) {
65    if ( strncmp(buf+8, "WAVEfmt ", 8) == 0 )
66     codec = ROAR_CODEC_RIFF_WAVE;
67   }
68  } else if ( strncmp(buf, "Roar", 4) == 0 ) {
69   if ( len > ROAR_SPEEX_MAGIC_LEN ) {
70    if ( strncmp(buf, ROAR_SPEEX_MAGIC, ROAR_SPEEX_MAGIC_LEN) == 0 )
71     codec = ROAR_CODEC_ROAR_SPEEX;
72#if ROAR_SPEEX_MAGIC_LEN < ROAR_CELT_MAGIC_LEN
73   }
74   if ( len > ROAR_CELT_MAGIC_LEN ) {
75#endif
76    if ( strncmp(buf, ROAR_CELT_MAGIC_0, ROAR_CELT_MAGIC_LEN) == 0 ||
77         strncmp(buf, ROAR_CELT_MAGIC_1, ROAR_CELT_MAGIC_LEN) == 0  )
78     codec = ROAR_CODEC_ROAR_CELT;
79   }
80  } else if ( strncmp(buf, "fLaC", 4) == 0 ) {
81   codec = ROAR_CODEC_FLAC;
82  } else if ( strncmp(buf, ".snd", 4) == 0 ) {
83   codec = ROAR_CODEC_AU;
84  } else if ( len > 7 && strncmp(buf, "RAUM-CF0", 8) == 0 ) {
85   codec = ROAR_CODEC_RAUM;
86  }
87 }
88
89 return codec;
90}
91
92ssize_t roar_file_send_raw (int out, int in) {
93#ifdef _CAN_OPERATE
94 ssize_t r = 0;
95#ifdef ROAR_HAVE_LINUX_SENDFILE
96 ssize_t ret;
97#endif
98 int len;
99 char buf[BUFFERSIZE];
100#if defined(__linux__) && defined(ROAR_HAVE_IPV4)
101 int cork_new = 1, cork_old;
102 socklen_t cork_len = sizeof(int);
103
104 if ( getsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_old, &cork_len) == -1 ) {
105  cork_old = -1;
106 } else {
107  setsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_new, sizeof(int));
108 }
109#endif
110
111 roar_debug_warn_obsolete("roar_file_send_raw", "roar_vio_copy_data", NULL);
112
113#ifdef ROAR_HAVE_LINUX_SENDFILE
114 while ((ret = sendfile(out, in, NULL, BUFMAX)) > 0)
115  r += ret;
116#endif
117
118 // TODO: try mmap here!
119
120 while ((len = read(in, buf, BUFFERSIZE)) > 0)
121  r += write(out, buf, len);
122
123#if defined(__linux__) && defined(ROAR_HAVE_IPV4)
124 if ( cork_old != -1 )
125  setsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_old, cork_len);
126#endif
127 return r;
128#else
129 return -1;
130#endif
131}
132
133ssize_t     roar_file_map        (char * filename, int flags, mode_t mode, size_t len, void ** mem) {
134#ifdef ROAR_HAVE_MMAP
135 int fh;
136 int mmap_flags = 0;
137 struct stat stat;
138
139 roar_debug_warn_obsolete("roar_file_map", NULL, NULL);
140
141 if ( mem == NULL || filename == NULL )
142  return -1;
143
144 *mem = NULL;
145
146 if ( flags & O_RDWR ) {
147  mmap_flags = PROT_READ|PROT_WRITE;
148 } else if ( flags & O_WRONLY ) {
149  mmap_flags = PROT_WRITE;
150 } else {
151  mmap_flags = PROT_READ;
152 }
153
154 if ( (fh = open(filename, flags, mode)) == -1 ) {
155  return -1;
156 }
157
158 if ( fstat(fh, &stat) == -1 ) {
159  close(fh);
160  return -1;
161 }
162
163 if ( stat.st_size < len ) {
164  if ( ftruncate(fh, len) == -1 ) {
165   close(fh);
166   return -1;
167  }
168 }
169
170 if ( (*mem = mmap(NULL, len, mmap_flags, MAP_SHARED, fh, 0)) == NULL ) {
171  close(fh);
172  return -1;
173 }
174
175 close(fh);
176
177 return len;
178#else
179#ifdef ROAR_TARGET_WIN32
180 ROAR_ERR("roar_file_map(*): There is no support to fast access files via mmap() within win32, download a real OS...");
181#endif
182 return -1;
183#endif
184}
185
186int     roar_file_unmap      (size_t len, void * mem) {
187 roar_debug_warn_obsolete("roar_file_unmap", NULL, NULL);
188
189#ifdef ROAR_HAVE_MMAP
190 return munmap(mem, len);
191#else
192#ifdef ROAR_TARGET_WIN32
193 ROAR_ERR("roar_file_map(*): There is no support to fast access files via mmap() within win32, download a real OS...");
194#endif
195 return -1;
196#endif
197}
198
199
200char  * roar_cdromdevice     (void) {
201 char * k;
202
203 if ( (k = getenv("CDDA_DEVICE")) != NULL )
204  return k;
205
206#ifdef ROAR_DEFAULT_CDROM
207 return ROAR_DEFAULT_CDROM;
208#endif
209
210 roar_err_set(ROAR_ERROR_NODEV);
211 return NULL;
212}
213
214//ll
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