[5031] | 1 | //time.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2011 |
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| 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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| 38 | int roar_time_to_msg(struct roar_message * mes, struct roar_time * time) { |
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| 39 | uint64_t * data; |
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| 40 | |
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| 41 | if ( mes == NULL || time == NULL ) { |
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| 42 | roar_err_set(ROAR_ERROR_FAULT); |
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| 43 | return -1; |
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| 44 | } |
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| 45 | |
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| 46 | memset(mes, 0, sizeof(struct roar_message)); |
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| 47 | |
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| 48 | data = (uint64_t*)mes->data; |
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| 49 | |
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| 50 | data[0] = ROAR_HOST2NET64(0); |
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| 51 | data[1] = ROAR_HOST2NET64(time->t_sec); |
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| 52 | data[2] = ROAR_HOST2NET64(time->t_ssec); |
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| 53 | data[3] = ROAR_HOST2NET64(time->c_freq); |
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| 54 | data[4] = ROAR_HOST2NET64(time->c_drift); |
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| 55 | |
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| 56 | mes->datalen = 5*8; |
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| 57 | |
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| 58 | if ( time->c_drift == 0 ) { |
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| 59 | mes->datalen -= 4; |
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| 60 | if ( time->c_freq == 0 ) { |
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| 61 | mes->datalen -= 4; |
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| 62 | if ( time->t_ssec == 0 ) { |
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| 63 | mes->datalen -= 4; |
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| 64 | } |
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| 65 | } |
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| 66 | } |
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| 67 | |
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| 68 | return 0; |
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| 69 | } |
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| 70 | |
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| 71 | int roar_time_from_msg(struct roar_time * time, struct roar_message * mes) { |
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| 72 | uint64_t * data; |
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| 73 | |
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| 74 | if ( mes == NULL || time == NULL ) { |
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| 75 | roar_err_set(ROAR_ERROR_FAULT); |
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| 76 | return -1; |
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| 77 | } |
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| 78 | |
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| 79 | data = (uint64_t*)mes->data; |
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| 80 | |
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| 81 | if ( mes->datalen < 8 ) { |
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| 82 | roar_err_set(ROAR_ERROR_BADMSG); |
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| 83 | return -1; |
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| 84 | } |
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| 85 | |
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| 86 | if ( mes->datalen % 8 ) { |
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| 87 | roar_err_set(ROAR_ERROR_BADMSG); |
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| 88 | return -1; |
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| 89 | } |
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| 90 | |
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| 91 | if ( ROAR_NET2HOST64(data[0]) != 0 ) { |
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| 92 | roar_err_set(ROAR_ERROR_NSVERSION); |
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| 93 | return -1; |
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| 94 | } |
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| 95 | |
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| 96 | memset(time, 0, sizeof(struct roar_time)); |
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| 97 | |
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| 98 | if ( mes->datalen >= 16 ) { |
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| 99 | time->t_sec = ROAR_NET2HOST64(data[1]); |
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| 100 | if ( mes->datalen >= 24 ) { |
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| 101 | time->t_ssec = ROAR_NET2HOST64(data[2]); |
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| 102 | if ( mes->datalen >= 32 ) { |
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| 103 | time->c_freq = ROAR_NET2HOST64(data[3]); |
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| 104 | if ( mes->datalen >= 40 ) { |
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| 105 | time->c_drift = ROAR_NET2HOST64(data[4]); |
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| 106 | } |
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| 107 | } |
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| 108 | } |
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| 109 | } |
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| 110 | |
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| 111 | return 0; |
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| 112 | } |
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| 113 | |
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| 114 | int roar_get_time (struct roar_connection * con, struct roar_time * time) { |
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| 115 | struct roar_message mes; |
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| 116 | |
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| 117 | if ( con == NULL || time == NULL ) { |
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| 118 | roar_err_set(ROAR_ERROR_FAULT); |
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| 119 | return -1; |
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| 120 | } |
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| 121 | |
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| 122 | memset(&mes, 0, sizeof(mes)); |
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| 123 | |
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| 124 | mes.cmd = ROAR_CMD_GETTIMEOFDAY; |
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| 125 | mes.stream = -1; |
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| 126 | mes.datalen = 8; /* 64 bit */ |
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| 127 | // mes.data is already cleared. |
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| 128 | |
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| 129 | if ( roar_req(con, &mes, NULL) == -1 ) |
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| 130 | return -1; |
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| 131 | |
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| 132 | if ( mes.cmd != ROAR_CMD_OK ) { |
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| 133 | return -1; |
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| 134 | } |
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| 135 | |
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| 136 | if ( roar_time_from_msg(time, &mes) == -1 ) |
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| 137 | return -1; |
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| 138 | |
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| 139 | return 0; |
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| 140 | } |
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| 141 | |
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| 142 | //ll |
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