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 - 2008-2013 |
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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_LIGHT |
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29 | |
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30 | // declared 'extern' |
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31 | struct light_state g_light_state; |
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32 | struct light_mixer g_light_mixer; |
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33 | // // |
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34 | |
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35 | static inline void __set_channel(size_t index, unsigned char val) { |
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36 | g_light_state.changes[index] |= g_light_state.state[index] ^ val; |
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37 | g_light_state.state[index] = val; |
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38 | } |
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39 | |
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40 | int light_init (uint32_t channels) { |
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41 | struct roar_stream_server * ss; |
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42 | int i; |
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43 | |
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44 | g_light_state.channels = 0; |
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45 | |
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46 | if ( channels == 0 || channels > ((uint32_t)512UL*(uint32_t)512UL) ) /* unrealstic values */ |
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47 | return -1; |
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48 | |
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49 | if ( (g_light_state.state = roar_mm_malloc(channels)) == NULL ) { |
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50 | return -1; |
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51 | } |
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52 | |
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53 | if ( (g_light_state.changes = roar_mm_malloc(channels)) == NULL ) { |
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54 | roar_mm_free(g_light_state.state); |
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55 | return -1; |
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56 | } |
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57 | |
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58 | g_light_state.channels = channels; |
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59 | |
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60 | if ( (g_light_mixer.stream = add_mixer(ROAR_SUBSYS_LIGHT, _MIXER_NAME("Light Control"), &ss)) == -1 ) { |
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61 | roar_mm_free(g_light_state.state); |
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62 | return -1; |
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63 | } |
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64 | |
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65 | ROAR_STREAM(ss)->info.codec = ROAR_CODEC_DMX512; |
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66 | ROAR_STREAM(ss)->info.bits = ROAR_LIGHT_BITS; |
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67 | ROAR_STREAM(ss)->info.rate = ROAR_OUTPUT_CFREQ; |
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68 | |
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69 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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70 | if ( g_streams[i] != NULL ) { |
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71 | if ( streams_get_subsys(i) == ROAR_SUBSYS_LIGHT ) { |
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72 | streams_set_mixer_stream(i, g_light_mixer.stream); |
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73 | } |
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74 | } |
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75 | } |
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76 | |
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77 | return light_reset(); |
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78 | } |
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79 | |
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80 | int light_free (void) { |
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81 | if ( g_light_state.state != NULL ) { |
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82 | roar_mm_free(g_light_state.state); |
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83 | } |
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84 | |
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85 | if ( g_light_state.changes != NULL ) { |
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86 | roar_mm_free(g_light_state.changes); |
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87 | } |
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88 | |
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89 | g_light_state.channels = 0; |
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90 | |
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91 | return 0; |
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92 | } |
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93 | |
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94 | int light_reset (void) { |
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95 | if ( g_light_state.channels == 0 ) |
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96 | return 0; |
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97 | |
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98 | if ( g_light_state.state == NULL ) |
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99 | return -1; |
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100 | |
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101 | if ( g_light_state.changes == NULL ) |
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102 | return -1; |
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103 | |
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104 | memset(g_light_state.state, 0, g_light_state.channels); |
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105 | memset(g_light_state.changes, 0, g_light_state.channels); |
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106 | |
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107 | return 0; |
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108 | } |
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109 | |
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110 | int light_reinit(void) { |
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111 | if ( g_light_state.changes == NULL ) |
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112 | return -1; |
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113 | |
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114 | memset(g_light_state.changes, 0, g_light_state.channels); |
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115 | |
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116 | return 0; |
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117 | } |
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118 | |
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119 | int light_update(void) { |
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120 | return 0; |
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121 | } |
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122 | |
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123 | int light_check_stream (int id) { |
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124 | struct roar_stream * s; |
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125 | struct roar_stream_server * ss; |
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126 | struct roar_roardmx_message mes; |
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127 | char buf[512]; |
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128 | int i, c; |
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129 | uint16_t channel; |
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130 | unsigned char value; |
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131 | |
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132 | if ( g_streams[id] == NULL ) |
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133 | return -1; |
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134 | |
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135 | ROAR_DBG("light_check_stream(id=%i) = ?", id); |
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136 | |
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137 | s = ROAR_STREAM(ss = g_streams[id]); |
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138 | |
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139 | switch (s->info.codec) { |
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140 | case ROAR_CODEC_DMX512: |
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141 | if ( stream_vio_s_read(ss, buf, 512) != 512 ) { |
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142 | streams_delete(id); |
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143 | return -1; |
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144 | } |
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145 | |
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146 | for (i = 0; i < (g_light_state.channels < 512 ? g_light_state.channels : 512); i++) { |
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147 | __set_channel(i, buf[i]); |
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148 | } |
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149 | // memcpy(g_light_state.state, buf, g_light_state.channels < 512 ? g_light_state.channels : 512); |
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150 | |
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151 | s->pos = ROAR_MATH_OVERFLOW_ADD(s->pos, 1); |
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152 | |
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153 | return 0; |
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154 | break; |
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155 | case ROAR_CODEC_ROARDMX: |
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156 | ROAR_DBG("light_check_stream(id=%i): Codec: RoarDMX", id); |
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157 | if ( roar_roardmx_message_recv(&mes, &(ss->vio)) == -1 ) { |
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158 | streams_delete(id); // because we don't know at the moment... |
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159 | return -1; |
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160 | } |
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161 | |
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162 | // we ignore errors here at the moment as 0 not < -1 |
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163 | c = roar_roardmx_message_numchannels(&mes); |
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164 | ROAR_DBG("light_check_stream(id=%i): Number of subframes: %u", id, c); |
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165 | |
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166 | for (i = 0; i < c; i++) { |
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167 | if ( roar_roardmx_message_get_chanval(&mes, &channel, &value, i) == -1 ) |
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168 | return -1; |
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169 | |
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170 | if ( g_light_state.channels < channel ) { |
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171 | ROAR_WARN("light_check_stream(id=%i): Writing on non extisting DMX channel %u", id, channel); |
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172 | continue; |
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173 | } else { |
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174 | g_light_state.state[channel] = value; |
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175 | g_light_state.changes[channel] = 0xFF; // the channel changed |
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176 | } |
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177 | } |
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178 | break; |
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179 | default: |
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180 | streams_delete(id); |
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181 | return -1; |
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182 | } |
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183 | |
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184 | return 0; |
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185 | } |
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186 | |
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187 | int light_send_stream (int id) { |
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188 | int chans; |
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189 | struct roar_stream * s; |
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190 | struct roar_stream_server * ss; |
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191 | unsigned char buf[512]; |
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192 | register unsigned char * bufptr; |
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193 | struct roar_roardmx_message mes; |
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194 | int i; |
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195 | int have_message = 0; |
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196 | |
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197 | if ( g_streams[id] == NULL ) |
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198 | return -1; |
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199 | |
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200 | ROAR_DBG("light_send_stream(id=%i) = ?", id); |
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201 | |
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202 | s = ROAR_STREAM(ss = g_streams[id]); |
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203 | |
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204 | switch (s->info.codec) { |
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205 | case ROAR_CODEC_DMX512: |
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206 | chans = g_light_state.channels; |
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207 | |
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208 | if ( chans > 512 ) |
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209 | chans = 512; |
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210 | |
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211 | if ( chans == 512 ) { |
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212 | bufptr = g_light_state.state; |
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213 | } else { |
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214 | memset(buf, 0, 512); |
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215 | memcpy(buf, g_light_state.state, chans); |
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216 | bufptr = buf; |
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217 | } |
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218 | |
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219 | if ( stream_vio_s_write(ss, bufptr, 512) != 512 ) { |
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220 | streams_delete(id); |
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221 | return -1; |
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222 | } |
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223 | |
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224 | s->pos = ROAR_MATH_OVERFLOW_ADD(s->pos, 1); |
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225 | |
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226 | return 0; |
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227 | break; |
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228 | case ROAR_CODEC_ROARDMX: |
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229 | for (i = 0; i < g_light_state.channels; i++) { |
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230 | if ( g_light_state.changes[i] ) { |
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231 | if ( !have_message ) |
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232 | if ( roar_roardmx_message_new_sset(&mes) == -1 ) |
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233 | return -1; |
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234 | |
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235 | have_message = 2; |
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236 | |
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237 | if ( roar_roardmx_message_add_chanval(&mes, i, g_light_state.state[i]) == -1 ) { |
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238 | if ( roar_roardmx_message_send(&mes, &(ss->vio)) == -1 ) |
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239 | return -1; |
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240 | |
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241 | if ( roar_roardmx_message_new_sset(&mes) == -1 ) |
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242 | return -1; |
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243 | |
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244 | have_message = 1; |
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245 | } |
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246 | } |
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247 | } |
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248 | |
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249 | if ( have_message == 2 ) { |
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250 | if ( roar_roardmx_message_send(&mes, &(ss->vio)) == -1 ) |
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251 | return -1; |
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252 | } |
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253 | return 0; |
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254 | break; |
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255 | default: |
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256 | streams_delete(id); |
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257 | return -1; |
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258 | } |
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259 | |
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260 | return 0; |
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261 | } |
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262 | |
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263 | int light_dmxchannel_get(size_t index) { |
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264 | if ( (size_t)g_light_state.channels <= index ) { |
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265 | roar_err_set(ROAR_ERROR_NOENT); |
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266 | return -1; |
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267 | } |
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268 | |
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269 | return (int)(unsigned int)(unsigned char)g_light_state.state[index]; |
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270 | } |
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271 | |
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272 | int light_dmxchannel_set(size_t index, unsigned char val) { |
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273 | if ( (size_t)g_light_state.channels <= index ) { |
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274 | roar_err_set(ROAR_ERROR_NOENT); |
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275 | return -1; |
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276 | } |
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277 | |
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278 | __set_channel(index, val); |
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279 | return 0; |
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280 | } |
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281 | |
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282 | #endif |
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283 | |
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284 | //ll |
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