| 1 | //driver_dmx.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2015 |
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| 5 | * |
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| 6 | * This file is part of roard a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * RoarAudio is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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| 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | #include "roard.h" |
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| 27 | |
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| 28 | #ifndef ROAR_WITHOUT_DCOMP_DMX |
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| 29 | |
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| 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) { |
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| 31 | struct roar_vio_defaults def; |
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| 32 | struct roar_vio_calls * vio; |
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| 33 | int err; |
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| 34 | const char * dev = device; |
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| 35 | char * dev_default_dmx4linux = NULL; |
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| 36 | |
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| 37 | if ( roar_vio_dstr_init_defaults(&def, ROAR_VIO_DEF_TYPE_NONE, O_WRONLY, 0644) == -1 ) |
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| 38 | return -1; |
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| 39 | |
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| 40 | vio = roar_mm_malloc(sizeof(struct roar_vio_calls)); |
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| 41 | if ( vio == NULL ) |
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| 42 | return -1; |
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| 43 | roar_vio_clear_calls(vio); |
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| 44 | |
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| 45 | if ( fh == -1 ) { |
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| 46 | if ( dev == NULL ) |
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| 47 | dev = roar_env_get("DMX"); |
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| 48 | |
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| 49 | if ( dev == NULL ) { |
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| 50 | dev_default_dmx4linux = roar_libroar_get_path("dev-default-dmx4linux", 0, NULL, NULL); |
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| 51 | dev = dev_default_dmx4linux; |
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| 52 | } |
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| 53 | |
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| 54 | if ( roar_vio_open_dstr(vio, dev, &def, 1) == -1 ) { |
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| 55 | err = roar_error; |
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| 56 | roar_mm_free(vio); |
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| 57 | if ( dev_default_dmx4linux != NULL ) |
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| 58 | roar_mm_free(dev_default_dmx4linux); |
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| 59 | roar_error = err; |
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| 60 | return -1; |
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| 61 | } |
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| 62 | if ( dev_default_dmx4linux != NULL ) |
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| 63 | roar_mm_free(dev_default_dmx4linux); |
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| 64 | } else { |
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| 65 | if ( roar_vio_open_fh(vio, fh) == -1 ) { |
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| 66 | err = roar_error; |
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| 67 | roar_mm_free(vio); |
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| 68 | roar_error = err; |
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| 69 | return -1; |
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| 70 | } |
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| 71 | } |
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| 72 | |
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| 73 | vio->flags |= ROAR_VIO_FLAGS_FREESELF; |
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| 74 | |
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| 75 | roar_vio_open_pass(inst, vio); |
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| 76 | inst->write = driver_dmx_write; |
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| 77 | inst->ctl = driver_dmx_ctl; |
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| 78 | |
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| 79 | info->codec = ROAR_CODEC_DMX512; |
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| 80 | |
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| 81 | if ( sstream != NULL ) |
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| 82 | driver_dmx_ctl(inst, ROAR_VIO_CTL_SET_SSTREAM, sstream); |
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| 83 | |
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| 84 | return 0; |
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| 85 | } |
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| 86 | |
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| 87 | ssize_t driver_dmx_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 88 | if ( vio == NULL || buf == NULL ) |
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| 89 | return -1; |
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| 90 | |
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| 91 | if ( count != 512 ) |
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| 92 | return -1; |
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| 93 | |
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| 94 | if ( roar_vio_lseek(vio->inst, 0, SEEK_SET) == (roar_off_t)-1 ) |
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| 95 | return -1; |
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| 96 | |
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| 97 | return roar_vio_write(vio->inst, buf, count); |
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| 98 | } |
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| 99 | |
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| 100 | int driver_dmx_ctl(struct roar_vio_calls * vio, roar_vio_ctl_t cmd, void * data) { |
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| 101 | |
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| 102 | if ( vio == NULL ) |
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| 103 | return -1; |
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| 104 | |
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| 105 | switch (cmd) { |
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| 106 | case ROAR_VIO_CTL_SET_SSTREAM: |
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| 107 | ROAR_STREAM(data)->dir = ROAR_DIR_LIGHT_OUT; |
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| 108 | ROAR_STREAM_SERVER(data)->codec_orgi = ROAR_CODEC_DMX512; |
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| 109 | break; |
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| 110 | default: |
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| 111 | roar_err_set(ROAR_ERROR_BADRQC); |
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| 112 | return -1; |
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| 113 | } |
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| 114 | |
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| 115 | return 0; |
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| 116 | } |
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| 117 | |
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| 118 | #endif |
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| 119 | |
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| 120 | //ll |
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