1 | //light.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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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, 675 Mass Ave, Cambridge, MA 02139, USA. |
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22 | * |
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23 | */ |
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24 | |
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25 | #include "roard.h" |
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26 | |
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27 | int light_init (unsigned int channels) { |
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28 | |
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29 | g_light_state.channels = 0; |
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30 | |
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31 | if ( (g_light_state.state = malloc(channels)) == NULL ) { |
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32 | return -1; |
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33 | } |
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34 | |
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35 | g_light_state.channels = channels; |
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36 | |
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37 | return light_reset(); |
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38 | } |
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39 | |
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40 | int light_free (void) { |
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41 | if ( g_light_state.state != NULL ) { |
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42 | free(g_light_state.state); |
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43 | } |
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44 | |
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45 | g_light_state.channels = 0; |
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46 | |
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47 | return 0; |
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48 | } |
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49 | |
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50 | int light_reset (void) { |
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51 | if ( g_light_state.channels == 0 ) |
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52 | return 0; |
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53 | |
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54 | if ( g_light_state.state == NULL ) |
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55 | return -1; |
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56 | |
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57 | memset(g_light_state.state, 0, g_light_state.channels); |
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58 | |
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59 | return 0; |
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60 | } |
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61 | |
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62 | int light_update(void) { |
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63 | return 0; |
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64 | } |
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65 | |
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66 | int light_check_stream (int id) { |
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67 | struct roar_stream * s; |
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68 | struct roar_stream_server * ss; |
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69 | char buf[512]; |
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70 | |
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71 | if ( g_streams[id] == NULL ) |
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72 | return -1; |
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73 | |
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74 | ROAR_DBG("light_check_stream(id=%i) = ?", id); |
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75 | |
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76 | s = ROAR_STREAM(ss = g_streams[id]); |
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77 | |
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78 | switch (s->info.codec) { |
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79 | case ROAR_CODEC_DMX512: |
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80 | if ( stream_vio_s_read(ss, buf, 512) != 512 ) { |
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81 | streams_delete(id); |
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82 | return -1; |
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83 | } |
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84 | |
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85 | memcpy(g_light_state.state, buf, g_light_state.channels < 512 ? g_light_state.channels : 512); |
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86 | |
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87 | return 0; |
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88 | break; |
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89 | default: |
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90 | streams_delete(id); |
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91 | return -1; |
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92 | } |
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93 | |
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94 | return 0; |
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95 | } |
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96 | |
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97 | int light_send_stream (int id) { |
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98 | int chans; |
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99 | struct roar_stream * s; |
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100 | struct roar_stream_server * ss; |
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101 | char buf[512]; |
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102 | |
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103 | if ( g_streams[id] == NULL ) |
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104 | return -1; |
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105 | |
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106 | ROAR_DBG("light_send_stream(id=%i) = ?", id); |
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107 | |
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108 | s = ROAR_STREAM(ss = g_streams[id]); |
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109 | |
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110 | switch (s->info.codec) { |
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111 | case ROAR_CODEC_DMX512: |
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112 | chans = g_light_state.channels; |
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113 | |
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114 | if ( chans > 512 ) |
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115 | chans = 512; |
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116 | |
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117 | if ( stream_vio_s_write(ss, g_light_state.state, chans) != chans ) { |
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118 | streams_delete(id); |
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119 | return -1; |
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120 | } |
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121 | |
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122 | if ( chans < 512 ) { |
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123 | chans = 512 - chans; |
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124 | memset(buf, 0, chans); |
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125 | if ( stream_vio_s_write(ss, g_light_state.state, chans) != chans ) { |
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126 | streams_delete(id); |
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127 | return -1; |
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128 | } |
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129 | } |
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130 | |
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131 | return 0; |
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132 | break; |
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133 | default: |
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134 | streams_delete(id); |
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135 | return -1; |
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136 | } |
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137 | |
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138 | return 0; |
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139 | } |
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140 | |
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141 | //ll |
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