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 | |
---|
30 | int 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 = "/dev/dmx"; |
---|
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 | |
---|
80 | ssize_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 | |
---|
93 | int 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 |
---|