source: roaraudio/libroarsndio/libroarsndio.c @ 4708:c9d40761088a

Last change on this file since 4708:c9d40761088a was 4708:c9d40761088a, checked in by phi, 13 years ago

updated copyright statements

File size: 5.1 KB
Line 
1//libroarsndio.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2011
5 *  The code (may) include prototypes and comments (and maybe
6 *  other code fragements) from OpenBSD's sndio.
7 *  See 'Copyright for sndio' below for more information on
8 *  code fragments taken from OpenBSD's sndio.
9 *
10 * --- Copyright for sndio ---
11 * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
12 *
13 * Permission to use, copy, modify, and distribute this software for any
14 * purpose with or without fee is hereby granted, provided that the above
15 * copyright notice and this permission notice appear in all copies.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
18 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
20 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
21 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
22 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
23 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 * --- End of Copyright for sndio ---
25 *
26 *  This file is part of libroaresd a part of RoarAudio,
27 *  a cross-platform sound system for both, home and professional use.
28 *  See README for details.
29 *
30 *  This file is free software; you can redistribute it and/or modify
31 *  it under the terms of the GNU General Public License version 3
32 *  as published by the Free Software Foundation.
33 *
34 *  RoarAudio is distributed in the hope that it will be useful,
35 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
36 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
37 *  GNU General Public License for more details.
38 *
39 *  You should have received a copy of the GNU General Public License
40 *  along with this software; see the file COPYING.  If not, write to
41 *  the Free Software Foundation, 51 Franklin Street, Fifth Floor,
42 *  Boston, MA 02110-1301, USA.
43 *
44 *  NOTE for everyone want's to change something and send patches:
45 *  read README and HACKING! There a addition information on
46 *  the license of this document you need to read before you send
47 *  any patches.
48 */
49
50#define ROAR_USE_OWN_SNDIO_HDL
51#include "libroarsndio.h"
52
53static char * sndio_to_roar_names (char * name) {
54 char * unitoffset = NULL;
55 char * optsoffset = NULL;
56 int    unit;
57
58 if ( name == NULL )
59  return NULL;
60
61 if ( !strncmp(name, "sun:", 4) ) {
62  unitoffset = name + 4;
63 } else if ( !strncmp(name, "aucat:", 6) ) {
64  unitoffset = name + 6;
65 } else if ( !strncmp(name, "rmidi:", 6) ) {
66  unitoffset = name + 6;
67 } else if ( !strncmp(name, "midithru:", 9) ) {
68  unitoffset = name + 9;
69 } else {
70  return name;
71 }
72
73 if ( (optsoffset = strstr(unitoffset, ".")) != NULL ) {
74  // TODO: add some code to strip the options of the end
75  return name;
76 } else {
77  unit = atoi(unitoffset);
78  switch (unit) {
79   // use defaulst
80   case 0: return NULL; break;
81   // use UNIX user sock, TODO: need some code here...
82   case 1: return NULL; break;
83   // use UNIX global sock:
84   case 2: return ROAR_DEFAULT_SOCK_GLOBAL; break;
85   // use DECnet localnode:
86   case 3: return "::"; break;
87   // use IPv4 localhost:
88   case 4: return ROAR_DEFAULT_INET4_HOST; break;
89   // reserved for DECnet Phase V:
90   case 5: return name; break;
91   // use IPv6 localhost:
92   case 6: return ROAR_DEFAULT_INET6_HOST; break;
93   // default:
94   default:
95     return name;
96  }
97 }
98
99 return name;
100}
101
102struct sio_hdl * sio_open(const char * name, unsigned mode, int nbio_flag) {
103 struct sio_hdl * hdl = NULL;
104 int is_midi = 0;
105
106 if ( (hdl = roar_mm_malloc(sizeof(struct sio_hdl))) == NULL )
107  return NULL;
108
109 memset(hdl, 0, sizeof(struct sio_hdl));
110
111 switch (mode) {
112  case SIO_PLAY:
113    hdl->dir = ROAR_DIR_PLAY;
114   break;
115  case MIO_OUT:
116    is_midi = 1;
117    hdl->dir = ROAR_DIR_MIDI_IN;
118   break;
119  case MIO_IN:
120    is_midi = 1;
121    hdl->dir = ROAR_DIR_MIDI_OUT;
122   break;
123
124  // unsupported:
125  case SIO_REC:
126  case SIO_PLAY|SIO_REC:
127  case MIO_OUT|MIO_IN:
128
129  // illigal:
130  default:
131    roar_mm_free(hdl);
132    return NULL;
133 }
134
135 if ( name == NULL ) {
136  if ( is_midi ) {
137   name = getenv("MIDIDEVICE");
138  } else {
139   name = getenv("AUDIODEVICE");
140  }
141 }
142
143 name = sndio_to_roar_names((char*) name);
144
145 if ( roar_simple_connect(&(hdl->con), (char*) name, "libroarsndio") == -1 ) {
146  roar_mm_free(hdl);
147  return NULL;
148 }
149
150 sio_initpar(&(hdl->para));
151
152 hdl->stream_opened = 0;
153
154 if ( name != NULL )
155  hdl->device = strdup(name);
156
157 if ( is_midi ) {
158  hdl->info.codec    = ROAR_CODEC_MIDI;
159  hdl->info.bits     = ROAR_MIDI_BITS;
160  hdl->info.channels = ROAR_MIDI_CHANNELS_DEFAULT;
161  hdl->info.rate     = ROAR_MIDI_TICKS_PER_BEAT;
162  if ( !sio_start(hdl) ) {
163   sio_close(hdl);
164   return NULL;
165  }
166 }
167
168 hdl->nonblock = nbio_flag;
169
170 return hdl;
171}
172
173void   sio_close  (struct sio_hdl * hdl) {
174 if ( hdl == NULL )
175  return;
176
177 sio_stop(hdl);
178
179 roar_disconnect(&(hdl->con));
180
181 roar_mm_free(hdl);
182}
183
184int    sio_eof    (struct sio_hdl * hdl) {
185 return hdl->ioerror;
186}
187
188void   sio_onmove (struct sio_hdl * hdl, void (*cb)(void * arg, int delta), void * arg) {
189 if ( hdl == NULL )
190  return;
191
192 hdl->on_move     = cb;
193 hdl->on_move_arg = arg;
194}
195
196//ll
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