source: roaraudio/roard/driver_dmx.c @ 5708:8d1c97c7cd44

Last change on this file since 5708:8d1c97c7cd44 was 5708:8d1c97c7cd44, checked in by phi, 11 years ago

Fixed roard's 'dmx' driver.

File size: 2.7 KB
Line 
1//driver_dmx.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2012
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
35 if ( roar_vio_dstr_init_defaults(&def, ROAR_VIO_DEF_TYPE_NONE, O_WRONLY, 0644) == -1 )
36  return -1;
37
38 vio = roar_mm_malloc(sizeof(struct roar_vio_calls));
39 if ( vio == NULL )
40  return -1;
41 roar_vio_clear_calls(vio);
42
43 if ( fh == -1 ) {
44  if ( device == NULL )
45   device = getenv("DMX");
46
47  if ( device == NULL )
48   device = "/dev/dmx";
49
50  if ( roar_vio_open_dstr(vio, device, &def, 1) == -1 ) {
51   err = roar_error;
52   roar_mm_free(vio);
53   roar_error = err;
54   return -1;
55  }
56 } else {
57  if ( roar_vio_open_fh(vio, fh) == -1 ) {
58   err = roar_error;
59   roar_mm_free(vio);
60   roar_error = err;
61   return -1;
62  }
63 }
64
65 vio->flags |= ROAR_VIO_FLAGS_FREESELF;
66
67 roar_vio_open_pass(inst, vio);
68 inst->write = driver_dmx_write;
69 inst->ctl   = driver_dmx_ctl;
70
71 info->codec = ROAR_CODEC_DMX512;
72
73 if ( sstream != NULL )
74  driver_dmx_ctl(inst, ROAR_VIO_CTL_SET_SSTREAM, sstream);
75
76 return 0;
77}
78
79ssize_t driver_dmx_write (struct roar_vio_calls * vio,  void *buf, size_t count) {
80 if ( vio == NULL || buf == NULL )
81  return -1;
82
83 if ( count != 512 )
84  return -1;
85
86 if ( roar_vio_lseek(vio->inst, 0, SEEK_SET) == (roar_off_t)-1 )
87  return -1;
88
89 return roar_vio_write(vio->inst, buf, count);
90}
91
92int driver_dmx_ctl(struct roar_vio_calls * vio, roar_vio_ctl_t cmd, void * data) {
93
94 if ( vio == NULL )
95  return -1;
96
97 switch (cmd) {
98  case ROAR_VIO_CTL_SET_SSTREAM:
99    ROAR_STREAM(data)->dir = ROAR_DIR_LIGHT_OUT;
100    ROAR_STREAM_SERVER(data)->codec_orgi = ROAR_CODEC_DMX512;
101   break;
102  default:
103   roar_err_set(ROAR_ERROR_BADRQC);
104   return -1;
105 }
106
107 return 0;
108}
109
110#endif
111
112//ll
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