[4497] | 1 | //caps.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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[4497] | 5 | * |
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| 6 | * This file is part of libroar 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 | * libroar 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 | * NOTE for everyone want's to change something and send patches: |
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| 25 | * read README and HACKING! There a addition information on |
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| 26 | * the license of this document you need to read before you send |
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| 27 | * any patches. |
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| 28 | * |
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| 29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 30 | * or libpulse*: |
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| 31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 32 | * and are therefore GPL. Because of this it may be illigal to use |
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| 33 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 34 | */ |
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| 35 | |
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| 36 | #include "libroar.h" |
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| 37 | |
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[4498] | 38 | int roar_caps_to_msg(struct roar_message * mes, struct roar_caps * caps, void ** data) { |
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| 39 | char * datap; |
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| 40 | size_t needlen = 4; |
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| 41 | |
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| 42 | if ( mes == NULL || caps == NULL ) |
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| 43 | return -1; |
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| 44 | |
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| 45 | needlen += caps->len; |
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| 46 | |
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| 47 | if ( needlen > sizeof(mes->data) ) { |
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| 48 | if ( data == NULL ) |
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| 49 | return -1; |
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| 50 | |
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| 51 | if ( (*data = malloc(needlen)) == NULL ) |
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| 52 | return -1; |
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| 53 | |
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| 54 | datap = *data; |
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| 55 | } else { |
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| 56 | datap = mes->data; |
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| 57 | } |
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| 58 | |
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| 59 | datap[0] = caps->version; |
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| 60 | datap[1] = caps->type; |
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| 61 | datap[2] = (caps->flags & 0xFF00) >> 8; |
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| 62 | datap[3] = caps->flags & 0xFF; |
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| 63 | |
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| 64 | if ( caps->len != 0 ) { |
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| 65 | memcpy(&(datap[4]), caps->data, caps->len); |
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| 66 | } |
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| 67 | |
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| 68 | mes->datalen = needlen; |
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| 69 | |
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| 70 | return 0; |
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| 71 | } |
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| 72 | |
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| 73 | int roar_caps_from_msg(struct roar_caps * caps, struct roar_message * mes, void * data) { |
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| 74 | char * datap; |
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| 75 | |
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| 76 | if ( mes == NULL || caps == NULL ) |
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| 77 | return -1; |
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| 78 | |
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| 79 | if ( data != NULL ) { |
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| 80 | datap = data; |
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| 81 | } else { |
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| 82 | datap = mes->data; |
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| 83 | } |
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| 84 | |
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| 85 | // versin check. |
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| 86 | if ( datap[0] != 0 || mes->datalen < 4 ) |
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| 87 | return -1; |
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| 88 | |
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| 89 | memset(caps, 0, sizeof(struct roar_caps)); |
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| 90 | |
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| 91 | caps->version = datap[0]; |
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| 92 | caps->type = datap[1]; |
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| 93 | caps->flags = (datap[2] << 8) | datap[3]; |
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| 94 | |
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| 95 | if ( mes->datalen == 4 ) { |
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| 96 | caps->data = NULL; |
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| 97 | caps->len = 0; |
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| 98 | } else { |
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| 99 | caps->data = &(datap[4]); |
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| 100 | caps->len = mes->datalen - 4; |
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| 101 | } |
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| 102 | |
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| 103 | return 0; |
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| 104 | } |
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| 105 | |
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| 106 | int roar_caps_stds(struct roar_connection * con, struct roar_stds ** out, struct roar_stds * in, int flags) { |
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| 107 | struct roar_message mes; |
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| 108 | struct roar_caps caps; |
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[4944] | 109 | void * data = NULL; |
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| 110 | char * data_char; |
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[4498] | 111 | size_t i; |
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| 112 | |
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[4499] | 113 | ROAR_DBG("roar_caps_stds(con=%p, out=%p, in=%p, flags=0x%.4x) = ?", con, out, in, flags); |
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| 114 | |
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[4498] | 115 | if ( flags == -1 ) |
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| 116 | flags = 0; |
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| 117 | |
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| 118 | if ( con == NULL ) |
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| 119 | return -1; |
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| 120 | |
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| 121 | if ( out != NULL ) |
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| 122 | flags |= ROAR_CF_REQUEST; |
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| 123 | |
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| 124 | if ( (flags & ROAR_CF_REQUEST) && out == NULL ) |
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| 125 | return -1; |
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| 126 | |
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| 127 | if ( in != NULL ) |
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| 128 | if ( in->stds_len == 0 ) |
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| 129 | in = NULL; |
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| 130 | |
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| 131 | memset(&caps, 0, sizeof(caps)); |
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| 132 | |
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| 133 | caps.version = 0; |
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| 134 | caps.type = ROAR_CT_STANDARDS; |
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| 135 | caps.flags = flags; |
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| 136 | |
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| 137 | memset(&mes, 0, sizeof(mes)); |
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| 138 | |
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| 139 | if ( in != NULL ) { |
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| 140 | // we use a hack here to avoid double alloc: |
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| 141 | // first pass the data in native byte order. |
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| 142 | // after we got a buffer swap in-buffer. |
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| 143 | caps.data = in->stds; |
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| 144 | caps.len = in->stds_len * 4; |
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| 145 | } |
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| 146 | |
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| 147 | if ( roar_caps_to_msg(&mes, &caps, &data) == -1 ) |
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| 148 | return -1; |
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| 149 | |
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| 150 | if ( in != NULL ) { |
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| 151 | if ( data == NULL ) { |
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| 152 | for (i = 0; i < in->stds_len; i++) { |
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[4499] | 153 | ((uint32_t*)mes.data)[i] = ROAR_HOST2NET32(((uint32_t*)mes.data)[i]); |
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[4498] | 154 | } |
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| 155 | } else { |
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| 156 | for (i = 0; i < in->stds_len; i++) { |
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[4499] | 157 | ((uint32_t*)data)[i] = ROAR_HOST2NET32(((uint32_t*)data)[i]); |
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[4498] | 158 | } |
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| 159 | } |
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| 160 | } |
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| 161 | |
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| 162 | mes.cmd = ROAR_CMD_CAPS; |
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| 163 | |
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[4944] | 164 | data_char = data; |
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| 165 | if ( roar_req(con, &mes, &data_char) == -1 ) |
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[4498] | 166 | return -1; |
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[4944] | 167 | data = data_char; |
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[4498] | 168 | |
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| 169 | if ( mes.cmd != ROAR_CMD_OK ) { |
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| 170 | if ( data != NULL ) |
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| 171 | free(data); |
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| 172 | return -1; |
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| 173 | } |
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| 174 | |
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| 175 | if ( roar_caps_from_msg(&caps, &mes, data) == -1 ) { |
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| 176 | if ( data != NULL ) |
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| 177 | free(data); |
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| 178 | return -1; |
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| 179 | } |
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| 180 | |
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| 181 | // check if response matches the request: |
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| 182 | if ( caps.version != 0 || caps.type != ROAR_CT_STANDARDS || (caps.len & 0x3) != 0 ) { |
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| 183 | if ( data != NULL ) |
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| 184 | free(data); |
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| 185 | return -1; |
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| 186 | } |
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| 187 | |
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| 188 | if ( out != NULL ) { |
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| 189 | *out = roar_stds_new(caps.len/4); |
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| 190 | if ( *out == NULL ) { |
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| 191 | if ( data != NULL ) |
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| 192 | free(data); |
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| 193 | return -1; |
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| 194 | } |
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| 195 | |
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[4499] | 196 | ROAR_DBG("roar_caps_stds(con=%p, out=%p, in=%p, flags=0x%.4x): (*out)->stds_len=%llu", con, out, in, flags, (long long unsigned int)(*out)->stds_len); |
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| 197 | |
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[4498] | 198 | for (i = 0; i < (*out)->stds_len; i++) { |
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[4499] | 199 | (*out)->stds[i] = ROAR_NET2HOST32(((uint32_t*)caps.data)[i]); |
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| 200 | ROAR_DBG("roar_caps_stds(con=%p, out=%p, in=%p, flags=0x%.4x): (*out)->stds[%llu] = 0x%.8x", con, out, in, flags, (long long unsigned int)i, (*out)->stds[i]); |
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[4498] | 201 | } |
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| 202 | } |
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| 203 | |
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| 204 | if ( data != NULL ) |
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| 205 | free(data); |
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| 206 | |
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| 207 | return 0; |
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| 208 | } |
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| 209 | |
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| 210 | struct roar_stds * roar_stds_new(size_t len) { |
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| 211 | struct roar_stds * ret; |
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| 212 | |
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| 213 | if ( len == 0 ) |
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| 214 | return NULL; |
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| 215 | |
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| 216 | ret = roar_mm_malloc(sizeof(struct roar_stds)); |
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| 217 | |
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| 218 | if ( ret == NULL ) |
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| 219 | return NULL; |
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| 220 | |
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| 221 | memset(ret, 0, sizeof(struct roar_stds)); |
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| 222 | |
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| 223 | ret->stds_len = len; |
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| 224 | ret->stds = roar_mm_malloc(len*sizeof(uint32_t)); |
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| 225 | |
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| 226 | if ( ret->stds == NULL ) { |
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| 227 | roar_mm_free(ret); |
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| 228 | return NULL; |
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| 229 | } |
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| 230 | |
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| 231 | memset(ret->stds, 0, len*sizeof(uint32_t)); |
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| 232 | |
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| 233 | return ret; |
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| 234 | } |
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| 235 | |
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| 236 | int roar_stds_free(struct roar_stds * stds) { |
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| 237 | if ( stds == NULL ) |
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| 238 | return -1; |
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| 239 | |
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| 240 | if ( stds->stds != NULL ) |
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| 241 | roar_mm_free(stds->stds); |
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| 242 | |
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| 243 | roar_mm_free(stds); |
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| 244 | |
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| 245 | return 0; |
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| 246 | } |
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| 247 | |
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[4502] | 248 | |
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| 249 | static struct { |
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| 250 | const int vendor; |
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| 251 | const char * name; |
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| 252 | } _libroar_std_vendors[] = { |
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| 253 | {ROAR_STDV_ROARAUDIO, "RoarAudio"}, |
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| 254 | {ROAR_STDV_PROTO, "Protocols"}, |
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| 255 | {ROAR_STDV_RFC, "RFC"}, |
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| 256 | {-1, NULL} |
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| 257 | }; |
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| 258 | |
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| 259 | int roar_stds_str2vendor(const char * vendor) { |
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| 260 | int i; |
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| 261 | |
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| 262 | for (i = 0; _libroar_std_vendors[i].name != NULL; i++) |
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| 263 | if ( !strcasecmp(_libroar_std_vendors[i].name, vendor) ) |
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| 264 | return _libroar_std_vendors[i].vendor; |
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| 265 | |
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| 266 | return -1; |
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| 267 | } |
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| 268 | |
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| 269 | const char * roar_stds_vendor2str(const int vendor) { |
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| 270 | int i; |
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| 271 | |
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| 272 | for (i = 0; _libroar_std_vendors[i].name != NULL; i++) |
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| 273 | if ( _libroar_std_vendors[i].vendor == vendor ) |
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| 274 | return _libroar_std_vendors[i].name; |
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| 275 | |
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| 276 | return NULL; |
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| 277 | } |
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| 278 | |
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| 279 | |
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[4497] | 280 | //ll |
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