1 | //emul_rsound.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2015 |
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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_EMUL_RSOUND |
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29 | |
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30 | static int emul_rsound_lastcon = -1; |
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31 | |
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32 | int emul_rsound_new_client (int client, int data); |
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33 | |
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34 | int emul_rsound_on_connect (int fh, struct roard_listen * lsock) { |
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35 | int oldfh = emul_rsound_lastcon; |
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36 | int client; |
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37 | union { |
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38 | int32_t i[4]; |
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39 | char c[16]; |
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40 | } buf; |
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41 | |
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42 | (void)lsock; |
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43 | |
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44 | // TODO: add error handling |
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45 | roar_socket_nonblock(fh, ROAR_SOCKET_NONBLOCK); |
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46 | |
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47 | if ( emul_rsound_lastcon == -1 ) { |
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48 | emul_rsound_lastcon = fh; |
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49 | return -2; |
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50 | } else { |
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51 | emul_rsound_lastcon = -1; |
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52 | |
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53 | client = clients_new(); |
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54 | |
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55 | if ( client == -1 ) |
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56 | return -1; |
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57 | |
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58 | if ( clients_set_fh(client, fh) == -1 ) { |
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59 | ROAR_ERR("net_get_new_client(void): Can not set client's fh"); |
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60 | |
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61 | clients_delete(client); |
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62 | close(oldfh); |
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63 | close(fh); |
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64 | |
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65 | ROAR_DBG("net_get_new_client(void) = -1"); |
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66 | return -1; |
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67 | } |
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68 | |
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69 | if ( emul_rsound_new_client(client, oldfh) == -1 ) { |
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70 | clients_delete(client); |
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71 | return -1; |
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72 | } |
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73 | |
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74 | // LATENCY: |
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75 | // we currently don't know what we need to set here. |
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76 | buf.i[0] = ROAR_HOST2NET32(0); |
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77 | |
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78 | // block size used by roard. |
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79 | buf.i[1] = ROAR_HOST2NET32(ROAR_OUTPUT_BUFFER_SAMPLES * roar_info2framesize(g_sa) / 8); |
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80 | |
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81 | // Magic zeros to enable protocol handling. |
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82 | // (RSD_CONN_PROTO) |
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83 | buf.i[2] = ROAR_HOST2NET32(0); |
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84 | buf.i[3] = ROAR_HOST2NET32(0); |
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85 | |
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86 | if ( ROAR_NETWORK_WRITE(oldfh, buf.c, sizeof(buf.c)) != sizeof(buf.c) ) { |
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87 | clients_delete(client); |
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88 | return -1; |
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89 | } |
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90 | |
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91 | return client; |
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92 | } |
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93 | |
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94 | return -1; |
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95 | } |
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96 | |
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97 | int emul_rsound_new_client (int client, int data) { |
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98 | struct roar_stream_server * ss; |
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99 | struct roar_stream * s; |
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100 | struct roar_client * c; |
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101 | int stream; |
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102 | |
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103 | if ( clients_get(client, &c) == -1 ) { |
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104 | return -1; |
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105 | } |
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106 | |
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107 | if ((stream = streams_new()) == -1 ) { |
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108 | clients_delete(client); |
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109 | return -1; |
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110 | } |
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111 | |
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112 | if ( streams_get(stream, &ss) == -1 ) { |
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113 | streams_delete(stream); |
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114 | clients_delete(client); |
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115 | return -1; |
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116 | } |
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117 | |
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118 | s = ROAR_STREAM(ss); |
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119 | |
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120 | if ( client_stream_add(client, stream) == -1 ) { |
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121 | streams_delete(stream); |
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122 | clients_delete(client); |
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123 | return -1; |
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124 | } |
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125 | |
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126 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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127 | |
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128 | ss->codec_orgi = s->info.codec = ROAR_CODEC_RIFF_WAVE; |
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129 | |
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130 | if ( streams_set_dir(stream, ROAR_DIR_PLAY, 1) == -1 ) { |
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131 | clients_delete(client); |
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132 | return -1; |
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133 | } |
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134 | |
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135 | /* |
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136 | if ( client_stream_exec(client, stream) == -1 ) { |
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137 | clients_delete(client); |
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138 | return -1; |
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139 | } |
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140 | */ |
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141 | |
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142 | if ( client_stream_set_fh(client, stream, data) == -1 ) { |
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143 | streams_delete(stream); |
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144 | clients_delete(client); |
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145 | return -1; |
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146 | } |
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147 | |
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148 | return 0; |
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149 | } |
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150 | |
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151 | int emul_rsound_vrecv_msg(struct emul_rsound_msg * msg, struct roar_vio_calls * vio) { |
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152 | struct roar_vio_select select; |
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153 | struct roar_vio_selecttv tv = { |
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154 | .sec = 0, |
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155 | .nsec = 0 |
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156 | }; |
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157 | ssize_t ret; |
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158 | int num; |
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159 | |
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160 | if ( msg == NULL || vio == NULL ) |
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161 | return -1; |
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162 | |
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163 | ROAR_VIO_SELECT_SETVIO(&select, vio, ROAR_VIO_SELECT_READ); |
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164 | if ( roar_vio_select(&select, 1, &tv, NULL) == -1 ) |
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165 | return -1; |
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166 | |
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167 | if ( !(select.eventsa & ROAR_VIO_SELECT_READ) ) { |
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168 | errno = EAGAIN; |
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169 | return -1; |
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170 | } |
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171 | |
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172 | ret = roar_vio_read(vio, msg->header, EMUL_RSOUND_MSG_HEADER_LEN); |
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173 | |
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174 | if ( ret != EMUL_RSOUND_MSG_HEADER_LEN ) |
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175 | return -1; |
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176 | |
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177 | msg->header[ret] = 0; |
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178 | |
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179 | if ( msg->header[0] != 'R' || msg->header[1] != 'S' || msg->header[2] != 'D' ) |
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180 | return -1; |
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181 | |
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182 | if ( sscanf(&(msg->header[3]), "%5d", &num) != 1 ) |
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183 | return -1; |
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184 | |
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185 | if ( num > EMUL_RSOUND_MSG_DATA_LEN ) |
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186 | return -1; |
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187 | |
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188 | msg->datalen = num; |
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189 | |
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190 | ret = roar_vio_read(vio, msg->data, num); |
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191 | |
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192 | if ( ret != (ssize_t)num ) |
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193 | return -1; |
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194 | |
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195 | msg->data[num] = 0; |
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196 | |
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197 | msg->datasp = msg->data; |
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198 | msg->dataslen = msg->datalen; |
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199 | |
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200 | for (num = 0; msg->data[num] == ' '; num++) { |
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201 | msg->datasp++; |
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202 | msg->dataslen--; |
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203 | } |
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204 | |
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205 | return 0; |
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206 | } |
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207 | |
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208 | int emul_rsound_vsend_msg(struct emul_rsound_msg * msg, struct roar_vio_calls * vio) { |
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209 | struct roar_vio_select select; |
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210 | struct roar_vio_selecttv tv = { |
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211 | .sec = 0, |
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212 | .nsec = 0 |
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213 | }; |
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214 | ssize_t ret; |
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215 | |
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216 | if ( msg == NULL || vio == NULL ) |
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217 | return -1; |
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218 | |
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219 | ROAR_VIO_SELECT_SETVIO(&select, vio, ROAR_VIO_SELECT_WRITE); |
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220 | if ( roar_vio_select(&select, 1, &tv, NULL) == -1 ) |
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221 | return -1; |
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222 | |
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223 | if ( !(select.eventsa & ROAR_VIO_SELECT_WRITE) ) { |
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224 | errno = EAGAIN; |
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225 | return -1; |
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226 | } |
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227 | |
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228 | snprintf(msg->header, EMUL_RSOUND_MSG_HEADER_LEN+1, "RSD%5d", (int)msg->datalen); |
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229 | |
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230 | ret = roar_vio_write(vio, msg->header, EMUL_RSOUND_MSG_HEADER_LEN); |
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231 | |
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232 | if ( ret != EMUL_RSOUND_MSG_HEADER_LEN ) |
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233 | return -1; |
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234 | |
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235 | ret = roar_vio_write(vio, msg->data, msg->datalen); |
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236 | |
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237 | if ( ret != (ssize_t)msg->datalen ) |
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238 | return -1; |
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239 | |
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240 | return 0; |
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241 | } |
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242 | |
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243 | int emul_rsound_check_client(int client, struct roar_vio_calls * vio) { |
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244 | struct roar_vio_calls rvio; |
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245 | struct emul_rsound_msg msg; |
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246 | struct roar_client * c; |
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247 | struct roar_stream_server * ss; |
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248 | int streamid; |
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249 | int i; |
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250 | ssize_t ptr; |
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251 | size_t max_len; |
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252 | |
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253 | if ( vio == NULL ) { |
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254 | vio = &rvio; |
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255 | roar_vio_open_fh_socket(vio, clients_get_fh(client)); |
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256 | } |
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257 | |
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258 | // we get called in a loop, in case this fails no problem, just |
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259 | // return -1, caller will delete us in case of real error. |
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260 | if ( emul_rsound_vrecv_msg(&msg, vio) == -1 ) |
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261 | return -1; |
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262 | |
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263 | if ( !strncmp(msg.datasp, "INFO", 4) ) { |
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264 | if ( clients_get(client, &c) == -1 ) |
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265 | return clients_delete(client); |
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266 | |
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267 | streamid = -1; |
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268 | for (i = 0; i < ROAR_CLIENTS_MAX_STREAMS_PER_CLIENT; i++) |
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269 | if ( c->streams[i] > streamid ) |
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270 | streamid = c->streams[i]; |
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271 | |
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272 | if ( streamid == -1 ) |
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273 | return clients_delete(client); |
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274 | |
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275 | if ( streams_get(streamid, &ss) == -1 ) |
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276 | return clients_delete(client); |
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277 | |
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278 | ptr = roar_info2samplesize(&(ROAR_STREAM(ss)->info)); |
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279 | |
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280 | if ( ptr == -1 ) |
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281 | return clients_delete(client); |
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282 | |
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283 | ptr *= ROAR_STREAM(ss)->pos; |
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284 | ptr /= 8; // bits -> bytes |
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285 | |
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286 | i = snprintf(msg.data+msg.datalen, EMUL_RSOUND_MSG_DATA_LEN - msg.datalen, " %" LIBROAR__ll "d", (LIBROAR__longlong int)ptr); |
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287 | |
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288 | msg.datalen += i; |
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289 | |
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290 | return emul_rsound_vsend_msg(&msg, vio); |
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291 | } else if ( !strncmp(msg.datasp, "NULL", 4) ) { |
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292 | // NULL is simular to NOOP |
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293 | } else if ( !strncmp(msg.datasp, "STOP", 4) ) { |
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294 | // This is quit. |
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295 | return clients_delete(client); |
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296 | } else if ( !strncmp(msg.datasp, "IDENTITY ", 9) ) { |
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297 | if ( msg.dataslen < (8+1+1) ) |
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298 | return clients_delete(client); |
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299 | |
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300 | msg.datasp += 9; |
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301 | msg.dataslen -= 9; |
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302 | |
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303 | if ( clients_get(client, &c) == -1 ) |
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304 | return clients_delete(client); |
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305 | |
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306 | max_len = msg.dataslen < (ROAR_BUFFER_NAME-1) ? msg.dataslen : (ROAR_BUFFER_NAME-1); |
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307 | |
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308 | strncpy(c->name, msg.datasp, max_len); |
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309 | c->name[max_len] = 0; |
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310 | } else if ( !strncmp(msg.datasp, "CLOSECTL", 9) ) { |
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311 | if ( clients_get(client, &c) == -1 ) |
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312 | return clients_delete(client); |
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313 | |
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314 | strncpy(msg.data, " CLOSECTL OK", EMUL_RSOUND_MSG_DATA_LEN); |
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315 | msg.datalen = 12; //strlen(" CLOSECTL OK"); |
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316 | |
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317 | if ( emul_rsound_vsend_msg(&msg, vio) == -1 ) |
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318 | return clients_delete(client); |
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319 | |
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320 | streamid = c->streams[0]; |
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321 | |
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322 | if ( client_stream_exec(client, streamid) == -1 ) |
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323 | return clients_delete(client); |
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324 | |
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325 | return 0; |
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326 | } else { |
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327 | // Unknown command, kill the client. |
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328 | return clients_delete(client); |
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329 | } |
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330 | |
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331 | return 0; |
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332 | } |
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333 | #endif |
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334 | |
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335 | //ll |
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