| 1 | //events.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2012 |
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| 5 | * The code (may) include prototypes and comments (and maybe |
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| 6 | * other code fragements) from OpenBSD's sndio. |
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| 7 | * See 'Copyright for sndio' below for more information on |
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| 8 | * code fragments taken from OpenBSD's sndio. |
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| 9 | * |
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| 10 | * --- Copyright for sndio --- |
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| 11 | * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org> |
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| 12 | * |
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| 13 | * Permission to use, copy, modify, and distribute this software for any |
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| 14 | * purpose with or without fee is hereby granted, provided that the above |
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| 15 | * copyright notice and this permission notice appear in all copies. |
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| 16 | * |
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| 17 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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| 18 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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| 19 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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| 20 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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| 21 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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| 22 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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| 23 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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| 24 | * --- End of Copyright for sndio --- |
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| 25 | * |
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| 26 | * This file is part of libroaresd a part of RoarAudio, |
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| 27 | * a cross-platform sound system for both, home and professional use. |
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| 28 | * See README for details. |
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| 29 | * |
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| 30 | * This file is free software; you can redistribute it and/or modify |
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| 31 | * it under the terms of the GNU General Public License version 3 |
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| 32 | * as published by the Free Software Foundation. |
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| 33 | * |
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| 34 | * RoarAudio is distributed in the hope that it will be useful, |
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| 35 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 36 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 37 | * GNU General Public License for more details. |
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| 38 | * |
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| 39 | * You should have received a copy of the GNU General Public License |
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| 40 | * along with this software; see the file COPYING. If not, write to |
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| 41 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 42 | * Boston, MA 02110-1301, USA. |
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| 43 | * |
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| 44 | * NOTE for everyone want's to change something and send patches: |
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| 45 | * read README and HACKING! There a addition information on |
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| 46 | * the license of this document you need to read before you send |
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| 47 | * any patches. |
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| 48 | */ |
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| 49 | |
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| 50 | #define ROAR_USE_OWN_SNDIO_HDL |
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| 51 | #include "libroarsndio.h" |
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| 52 | |
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| 53 | #define _CHECK() if ( hdl == NULL ) return 0 |
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| 54 | |
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| 55 | int sio_nfds (struct sio_hdl * hdl) { |
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| 56 | #ifdef ROAR_HAVE_H_POLL |
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| 57 | int fh = -1; |
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| 58 | |
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| 59 | _CHECK(); |
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| 60 | |
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| 61 | if ( hdl->stream_opened != 1 ) |
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| 62 | return 0; |
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| 63 | |
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| 64 | if ( roar_vio_ctl(&(hdl->svio), ROAR_VIO_CTL_GET_FH, &fh) == -1 ) |
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| 65 | return 0; |
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| 66 | |
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| 67 | if ( fh == -1 ) |
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| 68 | return 0; |
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| 69 | |
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| 70 | return 1; |
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| 71 | #else |
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| 72 | (void)hdl; |
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| 73 | return 0; |
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| 74 | #endif |
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| 75 | } |
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| 76 | |
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| 77 | int sio_pollfd (struct sio_hdl * hdl, struct pollfd * pfd, int events) { |
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| 78 | #ifdef ROAR_HAVE_H_POLL |
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| 79 | int num; |
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| 80 | int fh; |
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| 81 | |
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| 82 | _CHECK(); |
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| 83 | |
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| 84 | if ( (num = sio_nfds(hdl)) == 0 ) |
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| 85 | return 0; |
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| 86 | |
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| 87 | // not supportet currently: |
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| 88 | if ( num > 1 ) |
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| 89 | return 0; |
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| 90 | |
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| 91 | memset(pfd, 0, num*sizeof(struct pollfd)); |
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| 92 | |
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| 93 | // if stream is ok is tested by sio_nfds() |
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| 94 | |
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| 95 | if ( roar_vio_ctl(&(hdl->svio), ROAR_VIO_CTL_GET_FH, &fh) == -1 ) |
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| 96 | return 0; |
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| 97 | |
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| 98 | if ( fh == -1 ) |
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| 99 | return 0; |
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| 100 | |
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| 101 | pfd->fd = fh; |
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| 102 | pfd->events = events; |
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| 103 | pfd->revents = 0; |
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| 104 | |
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| 105 | return num; |
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| 106 | #else |
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| 107 | (void)hdl, (void)pfd, (void)events; |
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| 108 | return 0; |
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| 109 | #endif |
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| 110 | } |
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| 111 | |
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| 112 | int sio_revents(struct sio_hdl * hdl, struct pollfd * pfd) { |
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| 113 | #ifdef ROAR_HAVE_H_POLL |
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| 114 | short revents = 0; |
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| 115 | int num; |
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| 116 | int i; |
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| 117 | |
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| 118 | _CHECK(); |
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| 119 | |
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| 120 | if ( (num = sio_nfds(hdl)) == 0 ) |
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| 121 | return 0; |
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| 122 | |
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| 123 | for (i = 0; i < num; i++) |
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| 124 | revents |= pfd[i].revents; |
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| 125 | |
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| 126 | return revents; |
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| 127 | #else |
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| 128 | (void)hdl, (void)pfd; |
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| 129 | return 0; |
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| 130 | #endif |
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| 131 | } |
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| 132 | |
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| 133 | |
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| 134 | //ll |
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