[3684] | 1 | //emul_rsound.c: |
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| 2 | |
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| 3 | /* |
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[4708] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2011 |
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[3684] | 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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[3685] | 37 | union { |
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[3824] | 38 | int32_t i[4]; |
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| 39 | char c[16]; |
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[3685] | 40 | } buf; |
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[3684] | 41 | |
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[3825] | 42 | // TODO: add error handling |
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| 43 | roar_socket_nonblock(fh, ROAR_SOCKET_NONBLOCK); |
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| 44 | |
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[3684] | 45 | if ( emul_rsound_lastcon == -1 ) { |
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| 46 | emul_rsound_lastcon = fh; |
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| 47 | return -2; |
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| 48 | } else { |
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| 49 | emul_rsound_lastcon = -1; |
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| 50 | |
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| 51 | client = clients_new(); |
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| 52 | |
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| 53 | if ( client == -1 ) |
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| 54 | return -1; |
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| 55 | |
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| 56 | if ( clients_set_fh(client, fh) == -1 ) { |
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| 57 | ROAR_ERR("net_get_new_client(void): Can not set client's fh"); |
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| 58 | |
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| 59 | clients_delete(client); |
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| 60 | close(oldfh); |
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| 61 | close(fh); |
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| 62 | |
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| 63 | ROAR_DBG("net_get_new_client(void) = -1"); |
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| 64 | return -1; |
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| 65 | } |
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| 66 | |
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| 67 | if ( emul_rsound_new_client(client, oldfh) == -1 ) { |
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| 68 | clients_delete(client); |
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| 69 | return -1; |
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| 70 | } |
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| 71 | |
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[3841] | 72 | // LATENCY: |
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| 73 | // we currently don't know what we need to set here. |
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[3685] | 74 | buf.i[0] = ROAR_HOST2NET32(0); |
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[3841] | 75 | |
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| 76 | // block size used by roard. |
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| 77 | buf.i[1] = ROAR_HOST2NET32(ROAR_OUTPUT_BUFFER_SAMPLES * roar_info2framesize(g_sa) / 8); |
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| 78 | |
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| 79 | // Magic zeros to enable protocol handling. |
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| 80 | // (RSD_CONN_PROTO) |
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[3824] | 81 | buf.i[2] = ROAR_HOST2NET32(0); |
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| 82 | buf.i[3] = ROAR_HOST2NET32(0); |
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[3685] | 83 | |
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[4739] | 84 | if ( ROAR_NETWORK_WRITE(oldfh, buf.c, sizeof(buf.c)) != sizeof(buf.c) ) { |
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| 85 | clients_delete(client); |
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| 86 | return -1; |
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| 87 | } |
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[3684] | 88 | |
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| 89 | return client; |
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| 90 | } |
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| 91 | |
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| 92 | return -1; |
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| 93 | } |
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| 94 | |
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| 95 | int emul_rsound_new_client (int client, int data) { |
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| 96 | struct roar_stream_server * ss; |
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| 97 | struct roar_stream * s; |
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| 98 | struct roar_client * c; |
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| 99 | int stream; |
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| 100 | |
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| 101 | if ( clients_get(client, &c) == -1 ) { |
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| 102 | return -1; |
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| 103 | } |
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| 104 | |
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| 105 | if ((stream = streams_new()) == -1 ) { |
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| 106 | clients_delete(client); |
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| 107 | return -1; |
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| 108 | } |
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| 109 | |
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| 110 | if ( streams_get(stream, &ss) == -1 ) { |
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| 111 | streams_delete(stream); |
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| 112 | clients_delete(client); |
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| 113 | return -1; |
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| 114 | } |
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| 115 | |
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| 116 | s = ROAR_STREAM(ss); |
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| 117 | |
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| 118 | if ( client_stream_add(client, stream) == -1 ) { |
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| 119 | streams_delete(stream); |
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| 120 | clients_delete(client); |
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| 121 | return -1; |
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| 122 | } |
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| 123 | |
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| 124 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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| 125 | |
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[3686] | 126 | ss->codec_orgi = s->info.codec = ROAR_CODEC_RIFF_WAVE; |
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[3684] | 127 | |
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| 128 | if ( streams_set_dir(stream, ROAR_DIR_PLAY, 1) == -1 ) { |
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| 129 | clients_delete(client); |
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| 130 | return -1; |
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| 131 | } |
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| 132 | |
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| 133 | /* |
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| 134 | if ( client_stream_exec(client, stream) == -1 ) { |
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| 135 | clients_delete(client); |
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| 136 | return -1; |
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| 137 | } |
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| 138 | */ |
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| 139 | |
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| 140 | if ( client_stream_set_fh(client, stream, data) == -1 ) { |
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| 141 | streams_delete(stream); |
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| 142 | clients_delete(client); |
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| 143 | return -1; |
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| 144 | } |
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| 145 | |
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| 146 | return 0; |
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| 147 | } |
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| 148 | |
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[3820] | 149 | int emul_rsound_vrecv_msg(struct emul_rsound_msg * msg, struct roar_vio_calls * vio) { |
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[4193] | 150 | struct roar_vio_select select; |
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| 151 | struct roar_vio_selecttv tv = { |
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| 152 | .sec = 0, |
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| 153 | .nsec = 0 |
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| 154 | }; |
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[3820] | 155 | ssize_t ret; |
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| 156 | int num; |
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| 157 | |
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| 158 | if ( msg == NULL || vio == NULL ) |
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| 159 | return -1; |
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| 160 | |
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[4193] | 161 | ROAR_VIO_SELECT_SETVIO(&select, vio, ROAR_VIO_SELECT_READ); |
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| 162 | if ( roar_vio_select(&select, 1, &tv, NULL) == -1 ) |
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| 163 | return -1; |
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| 164 | |
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| 165 | if ( !(select.eventsa & ROAR_VIO_SELECT_READ) ) { |
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| 166 | errno = EAGAIN; |
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| 167 | return -1; |
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| 168 | } |
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| 169 | |
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[3820] | 170 | ret = roar_vio_read(vio, msg->header, EMUL_RSOUND_MSG_HEADER_LEN); |
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| 171 | |
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| 172 | if ( ret != EMUL_RSOUND_MSG_HEADER_LEN ) |
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| 173 | return -1; |
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| 174 | |
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| 175 | msg->header[ret] = 0; |
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| 176 | |
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| 177 | if ( msg->header[0] != 'R' || msg->header[1] != 'S' || msg->header[2] != 'D' ) |
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| 178 | return -1; |
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| 179 | |
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| 180 | if ( sscanf(&(msg->header[3]), "%5d", &num) != 1 ) |
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| 181 | return -1; |
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| 182 | |
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| 183 | if ( num > EMUL_RSOUND_MSG_DATA_LEN ) |
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| 184 | return -1; |
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| 185 | |
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| 186 | msg->datalen = num; |
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| 187 | |
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| 188 | ret = roar_vio_read(vio, msg->data, num); |
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| 189 | |
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| 190 | if ( ret != (ssize_t)num ) |
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| 191 | return -1; |
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| 192 | |
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| 193 | msg->data[num] = 0; |
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| 194 | |
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| 195 | msg->datasp = msg->data; |
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| 196 | msg->dataslen = msg->datalen; |
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| 197 | |
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| 198 | for (num = 0; msg->data[num] == ' '; num++) { |
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| 199 | msg->datasp++; |
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| 200 | msg->dataslen--; |
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| 201 | } |
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| 202 | |
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| 203 | return 0; |
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| 204 | } |
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| 205 | |
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| 206 | int emul_rsound_vsend_msg(struct emul_rsound_msg * msg, struct roar_vio_calls * vio) { |
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[4193] | 207 | struct roar_vio_select select; |
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| 208 | struct roar_vio_selecttv tv = { |
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| 209 | .sec = 0, |
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| 210 | .nsec = 0 |
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| 211 | }; |
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[3820] | 212 | ssize_t ret; |
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| 213 | |
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| 214 | if ( msg == NULL || vio == NULL ) |
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| 215 | return -1; |
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| 216 | |
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[4193] | 217 | ROAR_VIO_SELECT_SETVIO(&select, vio, ROAR_VIO_SELECT_WRITE); |
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| 218 | if ( roar_vio_select(&select, 1, &tv, NULL) == -1 ) |
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| 219 | return -1; |
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| 220 | |
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| 221 | if ( !(select.eventsa & ROAR_VIO_SELECT_WRITE) ) { |
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| 222 | errno = EAGAIN; |
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| 223 | return -1; |
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| 224 | } |
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| 225 | |
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[4130] | 226 | snprintf(msg->header, EMUL_RSOUND_MSG_HEADER_LEN+1, "RSD%5d", (int)msg->datalen); |
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[3820] | 227 | |
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| 228 | ret = roar_vio_write(vio, msg->header, EMUL_RSOUND_MSG_HEADER_LEN); |
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| 229 | |
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| 230 | if ( ret != EMUL_RSOUND_MSG_HEADER_LEN ) |
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| 231 | return -1; |
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| 232 | |
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| 233 | ret = roar_vio_write(vio, msg->data, msg->datalen); |
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| 234 | |
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| 235 | if ( ret != (ssize_t)msg->datalen ) |
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| 236 | return -1; |
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| 237 | |
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| 238 | return 0; |
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| 239 | } |
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| 240 | |
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| 241 | int emul_rsound_check_client(int client, struct roar_vio_calls * vio) { |
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[3824] | 242 | struct roar_vio_calls rvio; |
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| 243 | struct emul_rsound_msg msg; |
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| 244 | struct roar_client * c; |
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| 245 | struct roar_stream_server * ss; |
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| 246 | int streamid; |
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| 247 | int i; |
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| 248 | ssize_t ptr; |
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[3918] | 249 | size_t max_len; |
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[3820] | 250 | |
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| 251 | if ( vio == NULL ) { |
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| 252 | vio = &rvio; |
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| 253 | roar_vio_open_fh_socket(vio, clients_get_fh(client)); |
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| 254 | } |
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| 255 | |
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[3825] | 256 | // we get called in a loop, in case this fails no problem, just |
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| 257 | // return -1, caller will delete us in case of real error. |
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[3820] | 258 | if ( emul_rsound_vrecv_msg(&msg, vio) == -1 ) |
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[3825] | 259 | return -1; |
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[3820] | 260 | |
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| 261 | if ( !strncmp(msg.datasp, "INFO", 4) ) { |
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[3824] | 262 | if ( clients_get(client, &c) == -1 ) |
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| 263 | return clients_delete(client); |
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| 264 | |
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| 265 | streamid = -1; |
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| 266 | for (i = 0; i < ROAR_CLIENTS_MAX_STREAMS_PER_CLIENT; i++) |
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| 267 | if ( c->streams[i] > streamid ) |
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| 268 | streamid = c->streams[i]; |
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| 269 | |
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| 270 | if ( streamid == -1 ) |
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| 271 | return clients_delete(client); |
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| 272 | |
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| 273 | if ( streams_get(streamid, &ss) == -1 ) |
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| 274 | return clients_delete(client); |
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| 275 | |
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| 276 | ptr = roar_info2samplesize(&(ROAR_STREAM(ss)->info)); |
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| 277 | |
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| 278 | if ( ptr == -1 ) |
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| 279 | return clients_delete(client); |
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| 280 | |
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| 281 | ptr *= ROAR_STREAM(ss)->pos; |
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| 282 | ptr /= 8; // bits -> bytes |
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| 283 | |
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| 284 | i = snprintf(msg.data+msg.datalen, EMUL_RSOUND_MSG_DATA_LEN - msg.datalen, " %lld", (long long int)ptr); |
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| 285 | |
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| 286 | msg.datalen += i; |
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| 287 | |
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| 288 | return emul_rsound_vsend_msg(&msg, vio); |
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[3820] | 289 | } else if ( !strncmp(msg.datasp, "NULL", 4) ) { |
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| 290 | // NULL is simular to NOOP |
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| 291 | } else if ( !strncmp(msg.datasp, "STOP", 4) ) { |
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| 292 | // This is quit. |
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| 293 | return clients_delete(client); |
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[3918] | 294 | } else if ( !strncmp(msg.datasp, "IDENTITY ", 9) ) { |
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| 295 | if ( msg.dataslen < (8+1+1) ) |
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| 296 | return clients_delete(client); |
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| 297 | |
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| 298 | msg.datasp += 9; |
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| 299 | msg.dataslen -= 9; |
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| 300 | |
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| 301 | if ( clients_get(client, &c) == -1 ) |
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| 302 | return clients_delete(client); |
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| 303 | |
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| 304 | max_len = msg.dataslen < (ROAR_BUFFER_NAME-1) ? msg.dataslen : (ROAR_BUFFER_NAME-1); |
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| 305 | |
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| 306 | strncpy(c->name, msg.datasp, max_len); |
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| 307 | c->name[max_len] = 0; |
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[3921] | 308 | } else if ( !strncmp(msg.datasp, "CLOSECTL", 9) ) { |
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| 309 | if ( clients_get(client, &c) == -1 ) |
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| 310 | return clients_delete(client); |
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| 311 | |
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| 312 | strncpy(msg.data, " CLOSECTL OK", EMUL_RSOUND_MSG_DATA_LEN); |
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| 313 | msg.datalen = 12; //strlen(" CLOSECTL OK"); |
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| 314 | |
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[4130] | 315 | if ( emul_rsound_vsend_msg(&msg, vio) == -1 ) |
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[3921] | 316 | return clients_delete(client); |
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| 317 | |
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| 318 | streamid = c->streams[0]; |
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[4130] | 319 | |
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| 320 | if ( client_stream_exec(client, streamid) == -1 ) |
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[3921] | 321 | return clients_delete(client); |
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| 322 | |
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| 323 | return 0; |
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[3820] | 324 | } else { |
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[3841] | 325 | // Unknown command, kill the client. |
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[3820] | 326 | return clients_delete(client); |
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| 327 | } |
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[3825] | 328 | |
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| 329 | return 0; |
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[3820] | 330 | } |
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[3684] | 331 | #endif |
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| 332 | |
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| 333 | //ll |
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