[4341] | 1 | //asyncctl.c: |
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| 2 | |
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| 3 | /* |
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[6052] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2015 |
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[4341] | 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_wait (struct roar_connection * con, struct roar_event * triggered, struct roar_event * events, size_t num) { |
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| 39 | struct roar_message m; |
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| 40 | uint16_t * u16 = (uint16_t *) m.data; |
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| 41 | void * vp = m.data; |
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| 42 | size_t i, len_left, len_have, tmp; |
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| 43 | |
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| 44 | if ( con == NULL || triggered == NULL ) |
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| 45 | return -1; |
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| 46 | |
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| 47 | if ( num == 0 ) |
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| 48 | return 0; |
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| 49 | |
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| 50 | if ( events == NULL ) |
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| 51 | return -1; |
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| 52 | |
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| 53 | memset(&m, 0, sizeof(m)); |
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| 54 | |
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| 55 | m.cmd = ROAR_CMD_WAIT; |
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| 56 | m.stream = -1; |
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| 57 | |
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| 58 | u16[0] = ROAR_HOST2NET16(0); // version |
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| 59 | u16[1] = ROAR_HOST2NET16(0); // flags |
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| 60 | |
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| 61 | vp += 4; // we have 4 byte header (version + flags) |
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| 62 | |
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| 63 | len_left = sizeof(m.data) - 4; |
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| 64 | len_have = 4; |
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| 65 | |
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| 66 | for (i = 0; i < num; i++) { |
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| 67 | tmp = len_left; |
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| 68 | if ( roar_event_to_blob(&(events[i]), vp, &tmp) == -1 ) |
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| 69 | return -1; |
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| 70 | |
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| 71 | len_left -= tmp; |
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| 72 | len_have += tmp; |
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| 73 | vp += tmp; |
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| 74 | } |
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| 75 | |
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| 76 | m.datalen = len_have; |
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| 77 | |
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[5146] | 78 | if ( roar_req3(con, &m, NULL) != 0 ) |
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[4341] | 79 | return -1; |
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| 80 | |
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| 81 | if ( m.cmd != ROAR_CMD_OK ) |
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| 82 | return -1; |
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| 83 | |
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| 84 | u16[0] = ROAR_NET2HOST16(u16[0]); |
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| 85 | u16[1] = ROAR_NET2HOST16(u16[1]); |
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| 86 | |
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| 87 | // check if we have a complet header: |
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| 88 | if ( m.datalen < 2 ) |
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| 89 | return -1; |
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| 90 | |
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| 91 | // check if we have a unsupported version or flags: |
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| 92 | if ( u16[0] != 0 || u16[1] != 0 ) |
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| 93 | return -1; |
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| 94 | |
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| 95 | vp = (void*)m.data; |
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| 96 | vp += 4; |
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| 97 | len_have = tmp = m.datalen - 4; |
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| 98 | |
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[4342] | 99 | memset(triggered, 0, sizeof(struct roar_event)); |
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| 100 | |
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[4341] | 101 | if ( roar_event_from_blob(triggered, vp, &tmp) != 0 ) |
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| 102 | return -1; |
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| 103 | |
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| 104 | // test if we have a length match: |
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| 105 | if ( len_have != tmp ) |
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| 106 | return -1; |
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| 107 | |
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| 108 | // we now have an event. |
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| 109 | |
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| 110 | // we maybe have some data, need to reset this as it is of a local buffer: |
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| 111 | triggered->arg2 = NULL; |
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| 112 | triggered->arg2_len = 0; |
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| 113 | |
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| 114 | return 0; |
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| 115 | } |
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| 116 | |
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| 117 | //ll |
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