[1816] | 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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[1818] | 27 | int light_init (unsigned int channels) { |
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| 28 | |
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[1819] | 29 | g_light_state.channels = 0; |
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| 30 | |
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[1922] | 31 | if ( channels == 0 || channels > (512*512) ) /* unrealstic values */ |
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| 32 | return -1; |
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| 33 | |
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[1818] | 34 | if ( (g_light_state.state = malloc(channels)) == NULL ) { |
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| 35 | return -1; |
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| 36 | } |
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| 37 | |
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[1966] | 38 | if ( (g_light_state.changes = malloc(channels)) == NULL ) { |
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| 39 | free(g_light_state.state); |
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| 40 | return -1; |
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| 41 | } |
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| 42 | |
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[1818] | 43 | g_light_state.channels = channels; |
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| 44 | |
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| 45 | return light_reset(); |
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| 46 | } |
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| 47 | |
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| 48 | int light_free (void) { |
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| 49 | if ( g_light_state.state != NULL ) { |
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| 50 | free(g_light_state.state); |
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| 51 | } |
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| 52 | |
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[1966] | 53 | if ( g_light_state.changes != NULL ) { |
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| 54 | free(g_light_state.changes); |
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| 55 | } |
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| 56 | |
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[1818] | 57 | g_light_state.channels = 0; |
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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_reset (void) { |
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| 63 | if ( g_light_state.channels == 0 ) |
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| 64 | return 0; |
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| 65 | |
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| 66 | if ( g_light_state.state == NULL ) |
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| 67 | return -1; |
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| 68 | |
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[1966] | 69 | if ( g_light_state.changes == NULL ) |
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| 70 | return -1; |
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| 71 | |
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| 72 | memset(g_light_state.state, 0, g_light_state.channels); |
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| 73 | memset(g_light_state.changes, 0, g_light_state.channels); |
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| 74 | |
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| 75 | return 0; |
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| 76 | } |
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| 77 | |
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| 78 | int light_reinit(void) { |
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| 79 | if ( g_light_state.changes == NULL ) |
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| 80 | return -1; |
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| 81 | |
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| 82 | memset(g_light_state.changes, 0, g_light_state.channels); |
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[1818] | 83 | |
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| 84 | return 0; |
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| 85 | } |
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| 86 | |
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| 87 | int light_update(void) { |
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| 88 | return 0; |
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| 89 | } |
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| 90 | |
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[1821] | 91 | int light_check_stream (int id) { |
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[1822] | 92 | struct roar_stream * s; |
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| 93 | struct roar_stream_server * ss; |
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[1965] | 94 | struct roar_roardmx_message mes; |
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[1823] | 95 | char buf[512]; |
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[1965] | 96 | int i, c; |
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| 97 | uint16_t channel; |
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| 98 | unsigned char value; |
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[1822] | 99 | |
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| 100 | if ( g_streams[id] == NULL ) |
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| 101 | return -1; |
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| 102 | |
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| 103 | ROAR_DBG("light_check_stream(id=%i) = ?", id); |
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| 104 | |
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| 105 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 106 | |
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[1823] | 107 | switch (s->info.codec) { |
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| 108 | case ROAR_CODEC_DMX512: |
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| 109 | if ( stream_vio_s_read(ss, buf, 512) != 512 ) { |
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| 110 | streams_delete(id); |
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| 111 | return -1; |
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| 112 | } |
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| 113 | |
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[1967] | 114 | for (i = 0; i < (g_light_state.channels < 512 ? g_light_state.channels : 512); i++) { |
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| 115 | g_light_state.changes[i] |= g_light_state.state[i] ^ buf[i]; |
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| 116 | g_light_state.state[i] = buf[i]; |
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| 117 | } |
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| 118 | // memcpy(g_light_state.state, buf, g_light_state.channels < 512 ? g_light_state.channels : 512); |
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[1823] | 119 | |
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| 120 | return 0; |
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| 121 | break; |
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[1965] | 122 | case ROAR_CODEC_ROARDMX: |
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[2055] | 123 | ROAR_DBG("light_check_stream(id=%i): Codec: RoarDMX", id); |
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[1965] | 124 | if ( roar_roardmx_message_recv(&mes, &(ss->vio)) == -1 ) { |
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| 125 | streams_delete(id); // because we don't know at the moment... |
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| 126 | return -1; |
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| 127 | } |
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| 128 | |
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| 129 | // we ignore errors here at the moment as 0 not < -1 |
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| 130 | c = roar_roardmx_message_numchannels(&mes); |
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[2055] | 131 | ROAR_DBG("light_check_stream(id=%i): Number of subframes: %u", id, c); |
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[1965] | 132 | |
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| 133 | for (i = 0; i < c; i++) { |
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| 134 | if ( roar_roardmx_message_get_chanval(&mes, &channel, &value, i) == -1 ) |
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| 135 | return -1; |
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| 136 | |
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| 137 | if ( g_light_state.channels < channel ) { |
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| 138 | ROAR_WARN("light_check_stream(id=%i): Writing on non extisting DMX channel %u", id, channel); |
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| 139 | continue; |
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| 140 | } else { |
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[1967] | 141 | g_light_state.state[channel] = value; |
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| 142 | g_light_state.changes[channel] = 0xFF; // the channel changed |
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[1965] | 143 | } |
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| 144 | } |
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| 145 | break; |
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[1823] | 146 | default: |
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| 147 | streams_delete(id); |
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| 148 | return -1; |
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| 149 | } |
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| 150 | |
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[1821] | 151 | return 0; |
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| 152 | } |
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| 153 | |
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| 154 | int light_send_stream (int id) { |
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[1822] | 155 | int chans; |
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| 156 | struct roar_stream * s; |
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| 157 | struct roar_stream_server * ss; |
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[1925] | 158 | unsigned char buf[512]; |
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| 159 | register unsigned char * bufptr; |
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[1968] | 160 | struct roar_roardmx_message mes; |
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| 161 | int i; |
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| 162 | int have_message = 0; |
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[1822] | 163 | |
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| 164 | if ( g_streams[id] == NULL ) |
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| 165 | return -1; |
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| 166 | |
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[1823] | 167 | ROAR_DBG("light_send_stream(id=%i) = ?", id); |
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[1822] | 168 | |
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| 169 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 170 | |
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| 171 | switch (s->info.codec) { |
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| 172 | case ROAR_CODEC_DMX512: |
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| 173 | chans = g_light_state.channels; |
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| 174 | |
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| 175 | if ( chans > 512 ) |
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| 176 | chans = 512; |
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| 177 | |
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[1844] | 178 | if ( chans == 512 ) { |
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| 179 | bufptr = g_light_state.state; |
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| 180 | } else { |
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| 181 | memset(buf, 0, 512); |
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| 182 | memcpy(buf, g_light_state.state, chans); |
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| 183 | bufptr = buf; |
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[1822] | 184 | } |
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| 185 | |
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[1844] | 186 | if ( stream_vio_s_write(ss, bufptr, 512) != 512 ) { |
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| 187 | streams_delete(id); |
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| 188 | return -1; |
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[1822] | 189 | } |
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| 190 | |
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| 191 | return 0; |
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| 192 | break; |
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[1968] | 193 | case ROAR_CODEC_ROARDMX: |
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| 194 | for (i = 0; i < g_light_state.channels; i++) { |
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| 195 | if ( g_light_state.changes[i] ) { |
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| 196 | if ( !have_message ) |
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| 197 | if ( roar_roardmx_message_new_sset(&mes) == -1 ) |
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| 198 | return -1; |
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| 199 | |
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| 200 | have_message = 2; |
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| 201 | |
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| 202 | if ( roar_roardmx_message_add_chanval(&mes, i, g_light_state.state[i]) == -1 ) { |
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| 203 | if ( roar_roardmx_message_send(&mes, &(ss->vio)) == -1 ) |
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| 204 | return -1; |
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| 205 | |
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| 206 | if ( roar_roardmx_message_new_sset(&mes) == -1 ) |
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| 207 | return -1; |
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| 208 | |
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| 209 | have_message = 1; |
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| 210 | } |
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| 211 | } |
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| 212 | } |
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| 213 | |
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| 214 | if ( have_message == 2 ) { |
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| 215 | if ( roar_roardmx_message_send(&mes, &(ss->vio)) == -1 ) |
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| 216 | return -1; |
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| 217 | } |
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| 218 | return 0; |
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| 219 | break; |
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[1822] | 220 | default: |
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| 221 | streams_delete(id); |
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| 222 | return -1; |
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| 223 | } |
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| 224 | |
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[1821] | 225 | return 0; |
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| 226 | } |
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| 227 | |
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[1816] | 228 | //ll |
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