source: roaraudio/roard/driver_dmx.c @ 5878:3b92b0d6ef9b

Last change on this file since 5878:3b92b0d6ef9b was 5832:f0b38d5ea016, checked in by phi, 11 years ago

added roar_libroar_get_path_static() and make use of it

File size: 2.8 KB
Line 
1//driver_dmx.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2013
5 *
6 *  This file is part of roard 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 *  RoarAudio 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 */
25
26#include "roard.h"
27
28#ifndef ROAR_WITHOUT_DCOMP_DMX
29
30int driver_dmx_open_vio  (struct roar_vio_calls * inst, char * device, struct roar_audio_info * info, int fh, struct roar_stream_server * sstream) {
31 struct roar_vio_defaults def;
32 struct roar_vio_calls * vio;
33 int err;
34 const char * dev = device;
35
36 if ( roar_vio_dstr_init_defaults(&def, ROAR_VIO_DEF_TYPE_NONE, O_WRONLY, 0644) == -1 )
37  return -1;
38
39 vio = roar_mm_malloc(sizeof(struct roar_vio_calls));
40 if ( vio == NULL )
41  return -1;
42 roar_vio_clear_calls(vio);
43
44 if ( fh == -1 ) {
45  if ( dev == NULL )
46   dev = roar_env_get("DMX");
47
48  if ( dev == NULL )
49   dev = roar_libroar_get_path_static("dev-default-dmx4linux");
50
51  if ( roar_vio_open_dstr(vio, dev, &def, 1) == -1 ) {
52   err = roar_error;
53   roar_mm_free(vio);
54   roar_error = err;
55   return -1;
56  }
57 } else {
58  if ( roar_vio_open_fh(vio, fh) == -1 ) {
59   err = roar_error;
60   roar_mm_free(vio);
61   roar_error = err;
62   return -1;
63  }
64 }
65
66 vio->flags |= ROAR_VIO_FLAGS_FREESELF;
67
68 roar_vio_open_pass(inst, vio);
69 inst->write = driver_dmx_write;
70 inst->ctl   = driver_dmx_ctl;
71
72 info->codec = ROAR_CODEC_DMX512;
73
74 if ( sstream != NULL )
75  driver_dmx_ctl(inst, ROAR_VIO_CTL_SET_SSTREAM, sstream);
76
77 return 0;
78}
79
80ssize_t driver_dmx_write (struct roar_vio_calls * vio,  void *buf, size_t count) {
81 if ( vio == NULL || buf == NULL )
82  return -1;
83
84 if ( count != 512 )
85  return -1;
86
87 if ( roar_vio_lseek(vio->inst, 0, SEEK_SET) == (roar_off_t)-1 )
88  return -1;
89
90 return roar_vio_write(vio->inst, buf, count);
91}
92
93int driver_dmx_ctl(struct roar_vio_calls * vio, roar_vio_ctl_t cmd, void * data) {
94
95 if ( vio == NULL )
96  return -1;
97
98 switch (cmd) {
99  case ROAR_VIO_CTL_SET_SSTREAM:
100    ROAR_STREAM(data)->dir = ROAR_DIR_LIGHT_OUT;
101    ROAR_STREAM_SERVER(data)->codec_orgi = ROAR_CODEC_DMX512;
102   break;
103  default:
104   roar_err_set(ROAR_ERROR_BADRQC);
105   return -1;
106 }
107
108 return 0;
109}
110
111#endif
112
113//ll
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