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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