[590] | 1 | //vio.c: |
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| 2 | |
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[690] | 3 | /* |
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[1284] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008, 2009 |
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[690] | 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, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | * NOTE for everyone want's to change something and send patches: |
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| 24 | * read README and HACKING! There a addition information on |
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| 25 | * the license of this document you need to read before you send |
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| 26 | * any patches. |
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| 27 | * |
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| 28 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 29 | * or libpulse*: |
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| 30 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 31 | * and are therefore GPL. Because of this it may be illigal to use |
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| 32 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 33 | */ |
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| 34 | |
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[590] | 35 | #include "libroar.h" |
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| 36 | |
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[1474] | 37 | #ifdef ROAR_HAVE_IO_POSIX |
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| 38 | #define _CAN_OPERATE |
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| 39 | #endif |
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| 40 | |
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[591] | 41 | int roar_vio_init_calls (struct roar_vio_calls * calls) { |
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[1474] | 42 | #ifdef _CAN_OPERATE |
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[1118] | 43 | if ( calls == NULL ) |
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[591] | 44 | return -1; |
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| 45 | |
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| 46 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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| 47 | |
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[881] | 48 | /* |
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[597] | 49 | calls->read = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))read; |
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| 50 | calls->write = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))write; |
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| 51 | calls->lseek = (off_t (*)(int fildes, off_t offset, int whence, void * inst))lseek; |
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[881] | 52 | */ |
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| 53 | |
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[1118] | 54 | calls->read = roar_vio_basic_read; |
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| 55 | calls->write = roar_vio_basic_write; |
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| 56 | calls->lseek = roar_vio_basic_lseek; |
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| 57 | calls->nonblock = roar_vio_basic_nonblock; |
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| 58 | calls->sync = roar_vio_basic_sync; |
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[1505] | 59 | calls->ctl = roar_vio_basic_ctl; |
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[1241] | 60 | calls->close = roar_vio_basic_close; |
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[881] | 61 | |
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| 62 | return 0; |
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[1474] | 63 | #else |
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| 64 | return -1; |
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| 65 | #endif |
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[881] | 66 | } |
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| 67 | |
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| 68 | int roar_vio_set_inst (struct roar_vio_calls * vio, void * inst) { |
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| 69 | if ( vio == NULL ) |
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| 70 | return -1; |
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| 71 | |
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| 72 | vio->inst = inst; |
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[591] | 73 | |
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| 74 | return 0; |
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| 75 | } |
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| 76 | |
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[881] | 77 | int roar_vio_set_fh (struct roar_vio_calls * vio, int fh) { |
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[989] | 78 | return roar_vio_set_inst(vio, (void*)(ROAR_INSTINT)(fh + 1)); |
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[881] | 79 | } |
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| 80 | |
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| 81 | int roar_vio_get_fh (struct roar_vio_calls * vio) { |
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| 82 | if ( vio == NULL ) |
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| 83 | return -1; |
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| 84 | |
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[989] | 85 | return ((int)(ROAR_INSTINT)vio->inst) - 1; |
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[881] | 86 | } |
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| 87 | |
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| 88 | |
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| 89 | ssize_t roar_vio_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1319] | 90 | ROAR_DBG("roar_vio_read(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
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| 91 | |
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[881] | 92 | if ( vio == NULL ) |
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| 93 | return -1; |
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| 94 | |
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| 95 | if ( vio->read == NULL ) |
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| 96 | return -1; |
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| 97 | |
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| 98 | return vio->read(vio, buf, count); |
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| 99 | } |
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| 100 | |
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| 101 | ssize_t roar_vio_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 102 | if ( vio == NULL ) |
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| 103 | return -1; |
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| 104 | |
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| 105 | if ( vio->write == NULL ) |
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| 106 | return -1; |
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| 107 | |
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| 108 | return vio->write(vio, buf, count); |
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| 109 | } |
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| 110 | |
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| 111 | off_t roar_vio_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 112 | if ( vio == NULL ) |
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| 113 | return -1; |
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| 114 | |
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| 115 | if ( vio->lseek == NULL ) |
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| 116 | return -1; |
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| 117 | |
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| 118 | return vio->lseek(vio, offset, whence); |
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| 119 | } |
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| 120 | |
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[1118] | 121 | int roar_vio_nonblock(struct roar_vio_calls * vio, int state) { |
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| 122 | if ( vio == NULL ) |
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| 123 | return -1; |
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| 124 | |
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| 125 | if ( vio->nonblock == NULL ) |
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| 126 | return -1; |
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| 127 | |
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| 128 | return vio->nonblock(vio, state); |
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| 129 | } |
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| 130 | |
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| 131 | int roar_vio_sync (struct roar_vio_calls * vio) { |
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| 132 | if ( vio == NULL ) |
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| 133 | return -1; |
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| 134 | |
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| 135 | if ( vio->sync == NULL ) |
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| 136 | return -1; |
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| 137 | |
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| 138 | return vio->sync(vio); |
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| 139 | } |
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| 140 | |
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[1140] | 141 | int roar_vio_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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| 142 | if ( vio == NULL ) |
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| 143 | return -1; |
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| 144 | |
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[1615] | 145 | ROAR_DBG("roar_vio_ctl(vio=%p, cmd=0x%.8x, data=%p): vio->ctl=%p", vio, cmd, data, vio->ctl); |
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| 146 | |
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[1140] | 147 | if ( vio->ctl == NULL ) |
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| 148 | return -1; |
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| 149 | |
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| 150 | return vio->ctl(vio, cmd, data); |
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| 151 | } |
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| 152 | |
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[1241] | 153 | int roar_vio_close (struct roar_vio_calls * vio) { |
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| 154 | if ( vio == NULL ) |
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| 155 | return -1; |
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| 156 | |
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[1258] | 157 | if ( vio->close == NULL ) |
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[1241] | 158 | return -1; |
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| 159 | |
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| 160 | return vio->close(vio); |
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| 161 | } |
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| 162 | |
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[1252] | 163 | // converters: |
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| 164 | int roar_vio_open_file (struct roar_vio_calls * calls, char * filename, int flags, mode_t mode) { |
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[1474] | 165 | #ifdef _CAN_OPERATE |
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[1252] | 166 | int fh; |
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| 167 | |
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| 168 | if ( calls == NULL || filename == NULL ) |
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| 169 | return -1; |
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| 170 | |
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[1762] | 171 | #ifdef ROAR_TARGET_WIN32 |
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| 172 | flags |= O_BINARY; |
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| 173 | #endif |
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| 174 | |
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[1252] | 175 | if ( (fh = open(filename, flags, mode)) == -1 ) |
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| 176 | return -1; |
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| 177 | |
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| 178 | if ( roar_vio_open_fh(calls, fh) == -1 ) { |
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| 179 | close(fh); |
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| 180 | return -1; |
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| 181 | } |
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| 182 | |
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| 183 | return 0; |
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[1474] | 184 | #else |
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| 185 | return -1; |
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| 186 | #endif |
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[1252] | 187 | } |
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| 188 | |
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| 189 | int roar_vio_open_fh (struct roar_vio_calls * calls, int fh) { |
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| 190 | if ( calls == NULL ) |
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| 191 | return -1; |
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| 192 | |
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| 193 | if ( roar_vio_init_calls(calls) == -1 ) |
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| 194 | return -1; |
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| 195 | |
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| 196 | return roar_vio_set_fh(calls, fh); |
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| 197 | } |
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| 198 | |
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[1290] | 199 | int roar_vio_open_fh_socket(struct roar_vio_calls * calls, int fh) { |
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| 200 | if ( calls == NULL ) |
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| 201 | return -1; |
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| 202 | |
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[1666] | 203 | if ( roar_vio_open_fh(calls, fh) == -1 ) |
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| 204 | return -1; |
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| 205 | |
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[1760] | 206 | #ifdef ROAR_TARGET_WIN32 |
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| 207 | calls->read = roar_vio_winsock_read; |
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| 208 | calls->write = roar_vio_winsock_write; |
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| 209 | calls->nonblock = roar_vio_winsock_nonblock; |
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| 210 | calls->sync = roar_vio_winsock_sync; |
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| 211 | calls->ctl = roar_vio_winsock_ctl; |
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| 212 | calls->close = roar_vio_winsock_close; |
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| 213 | #else |
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| 214 | calls->sync = roar_vio_null_sync; |
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| 215 | #endif |
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[1666] | 216 | |
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| 217 | return 0; |
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[1290] | 218 | } |
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| 219 | |
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[1291] | 220 | int roar_vio_open_socket (struct roar_vio_calls * calls, char * host, int port) { |
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| 221 | int fh; |
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| 222 | |
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| 223 | if ( calls == NULL ) |
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| 224 | return -1; |
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| 225 | |
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| 226 | if ( (fh = roar_socket_connect(host, port)) == -1 ) |
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| 227 | return -1; |
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| 228 | |
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| 229 | return roar_vio_open_fh_socket(calls, fh); |
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| 230 | } |
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| 231 | |
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| 232 | int roar_vio_open_socket_listen(struct roar_vio_calls * calls, int type, char * host, int port) { |
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| 233 | int fh; |
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| 234 | |
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| 235 | if ( calls == NULL ) |
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| 236 | return -1; |
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| 237 | |
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| 238 | if ( (fh = roar_socket_listen(type, host, port)) == -1 ) |
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| 239 | return -1; |
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| 240 | |
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| 241 | return roar_vio_open_fh_socket(calls, fh); |
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| 242 | } |
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| 243 | |
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[1275] | 244 | int roar_vio_simple_stream (struct roar_vio_calls * calls, int rate, int channels, int bits, int codec, |
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| 245 | char * server, int dir, char * name) { |
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| 246 | int fh; |
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| 247 | |
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| 248 | if ( calls == NULL ) |
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| 249 | return -1; |
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| 250 | |
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| 251 | if ( (fh = roar_simple_stream(rate, channels, bits, codec, server, dir, name)) == -1 ) |
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| 252 | return -1; |
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| 253 | |
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[1290] | 254 | return roar_vio_open_fh_socket(calls, fh); |
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[1275] | 255 | } |
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| 256 | |
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[886] | 257 | // VIOs: |
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[881] | 258 | |
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[886] | 259 | // basic |
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[881] | 260 | ssize_t roar_vio_basic_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1474] | 261 | #ifdef _CAN_OPERATE |
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[881] | 262 | return read(roar_vio_get_fh(vio), buf, count); |
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[1474] | 263 | #else |
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| 264 | return -1; |
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| 265 | #endif |
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[881] | 266 | } |
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| 267 | |
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| 268 | ssize_t roar_vio_basic_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1474] | 269 | #ifdef _CAN_OPERATE |
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[881] | 270 | return write(roar_vio_get_fh(vio), buf, count); |
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[1474] | 271 | #else |
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| 272 | return -1; |
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| 273 | #endif |
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[881] | 274 | } |
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| 275 | |
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| 276 | off_t roar_vio_basic_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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[1474] | 277 | #ifdef _CAN_OPERATE |
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[881] | 278 | return lseek(roar_vio_get_fh(vio), offset, whence); |
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[1474] | 279 | #else |
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| 280 | return -1; |
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| 281 | #endif |
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[881] | 282 | } |
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| 283 | |
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[1118] | 284 | int roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state) { |
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| 285 | if ( roar_socket_nonblock(roar_vio_get_fh(vio), state) == -1 ) |
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| 286 | return -1; |
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| 287 | |
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| 288 | if ( state == ROAR_SOCKET_NONBLOCK ) |
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| 289 | return 0; |
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| 290 | |
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[1125] | 291 | roar_vio_sync(vio); |
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| 292 | |
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| 293 | return 0; |
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[1118] | 294 | } |
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| 295 | |
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| 296 | int roar_vio_basic_sync (struct roar_vio_calls * vio) { |
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[1397] | 297 | #ifdef ROAR_FDATASYNC |
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[1171] | 298 | return ROAR_FDATASYNC(roar_vio_get_fh(vio)); |
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[1397] | 299 | #else |
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| 300 | return 0; |
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| 301 | #endif |
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[1118] | 302 | } |
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| 303 | |
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[1505] | 304 | int roar_vio_basic_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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| 305 | |
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| 306 | if ( vio == NULL || cmd == -1 ) |
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| 307 | return -1; |
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| 308 | |
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[1615] | 309 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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| 310 | |
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[1505] | 311 | switch (cmd) { |
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| 312 | case ROAR_VIO_CTL_GET_FH: |
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| 313 | case ROAR_VIO_CTL_GET_READ_FH: |
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| 314 | case ROAR_VIO_CTL_GET_WRITE_FH: |
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[1615] | 315 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=ROAR_VIO_CTL_GET_*FH(0x%.8x), data=%p) = 0 // fh=%i", vio, cmd, data, roar_vio_get_fh(vio)); |
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[1505] | 316 | *(int*)data = roar_vio_get_fh(vio); |
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| 317 | return 0; |
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| 318 | break; |
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[2054] | 319 | case ROAR_VIO_CTL_SET_NOSYNC: |
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| 320 | vio->sync = NULL; |
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| 321 | return 0; |
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| 322 | break; |
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[1505] | 323 | } |
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| 324 | |
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| 325 | return -1; |
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| 326 | } |
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| 327 | |
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[1241] | 328 | int roar_vio_basic_close (struct roar_vio_calls * vio) { |
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[1474] | 329 | #ifdef _CAN_OPERATE |
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[1336] | 330 | if ( roar_vio_get_fh(vio) != -1 ) |
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| 331 | return close(roar_vio_get_fh(vio)); |
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| 332 | |
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| 333 | return 0; |
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[1474] | 334 | #else |
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| 335 | return -1; |
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| 336 | #endif |
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[1241] | 337 | } |
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| 338 | |
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[1760] | 339 | #ifdef ROAR_TARGET_WIN32 |
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| 340 | ssize_t roar_vio_winsock_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 341 | return recv(roar_vio_get_fh(vio), buf, count, 0); |
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| 342 | } |
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| 343 | |
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| 344 | ssize_t roar_vio_winsock_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 345 | return send(roar_vio_get_fh(vio), buf, count, 0); |
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| 346 | } |
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| 347 | |
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| 348 | int roar_vio_winsock_nonblock(struct roar_vio_calls * vio, int state) { |
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| 349 | return -1; |
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| 350 | } |
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| 351 | int roar_vio_winsock_sync (struct roar_vio_calls * vio) { |
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| 352 | return 0; |
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| 353 | } |
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| 354 | int roar_vio_winsock_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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| 355 | return -1; |
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| 356 | } |
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| 357 | int roar_vio_winsock_close (struct roar_vio_calls * vio) { |
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| 358 | |
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| 359 | closesocket(roar_vio_get_fh(vio)); |
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| 360 | |
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| 361 | return 0; |
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| 362 | } |
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| 363 | #endif |
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| 364 | |
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| 365 | |
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[943] | 366 | // null |
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| 367 | ssize_t roar_vio_null_rw (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 368 | if ( vio == NULL || buf == NULL ) |
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| 369 | return -1; |
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| 370 | |
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| 371 | return 0; |
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| 372 | } |
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| 373 | |
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[1665] | 374 | int roar_vio_null_sync (struct roar_vio_calls * vio) { |
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| 375 | return 0; |
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| 376 | } |
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| 377 | |
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[886] | 378 | // pass |
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[1247] | 379 | int roar_vio_open_pass (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 380 | if ( calls == NULL ) |
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| 381 | return -1; |
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| 382 | |
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| 383 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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| 384 | |
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| 385 | calls->read = roar_vio_pass_read; |
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| 386 | calls->write = roar_vio_pass_write; |
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| 387 | calls->lseek = roar_vio_pass_lseek; |
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| 388 | calls->nonblock = roar_vio_pass_nonblock; |
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| 389 | calls->sync = roar_vio_pass_sync; |
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[1615] | 390 | calls->ctl = roar_vio_pass_ctl; |
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[1247] | 391 | calls->close = roar_vio_pass_close; |
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| 392 | |
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| 393 | calls->inst = dst; |
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| 394 | |
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| 395 | return 0; |
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| 396 | } |
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| 397 | |
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[886] | 398 | ssize_t roar_vio_pass_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 399 | return roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count); |
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| 400 | } |
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| 401 | |
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| 402 | ssize_t roar_vio_pass_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 403 | return roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count); |
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| 404 | } |
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| 405 | |
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| 406 | off_t roar_vio_pass_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 407 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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| 408 | } |
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| 409 | |
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[1241] | 410 | int roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state) { |
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| 411 | return roar_vio_nonblock((struct roar_vio_calls *) vio->inst, state); |
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| 412 | } |
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| 413 | |
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| 414 | int roar_vio_pass_sync (struct roar_vio_calls * vio) { |
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| 415 | return roar_vio_sync((struct roar_vio_calls *) vio->inst); |
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| 416 | } |
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| 417 | |
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| 418 | int roar_vio_pass_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[1505] | 419 | if (vio == NULL || cmd == -1) |
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| 420 | return -1; |
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| 421 | |
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[1615] | 422 | ROAR_DBG("roar_vio_pass_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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| 423 | |
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[1505] | 424 | switch (cmd) { |
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| 425 | case ROAR_VIO_CTL_GET_NEXT: |
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| 426 | *(struct roar_vio_calls **)data = vio->inst; |
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| 427 | return 0; |
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| 428 | break; |
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| 429 | case ROAR_VIO_CTL_SET_NEXT: |
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| 430 | vio->inst = *(struct roar_vio_calls **)data; |
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| 431 | return 0; |
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| 432 | break; |
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| 433 | } |
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| 434 | |
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[1241] | 435 | return roar_vio_ctl((struct roar_vio_calls *) vio->inst, cmd, data); |
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| 436 | } |
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| 437 | |
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| 438 | int roar_vio_pass_close (struct roar_vio_calls * vio) { |
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| 439 | return roar_vio_close((struct roar_vio_calls *) vio->inst); |
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| 440 | } |
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| 441 | |
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[886] | 442 | |
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| 443 | // re |
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[1247] | 444 | int roar_vio_open_re (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 445 | if ( roar_vio_open_pass(calls, dst) == -1 ) |
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| 446 | return -1; |
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| 447 | |
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| 448 | calls->read = roar_vio_re_read; |
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| 449 | calls->write = roar_vio_re_write; |
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| 450 | calls->lseek = roar_vio_re_lseek; |
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| 451 | |
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| 452 | return 0; |
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| 453 | } |
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[886] | 454 | ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 455 | size_t len = 0; |
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| 456 | ssize_t r = -1; |
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| 457 | |
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| 458 | if ( vio == NULL ) |
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| 459 | return -1; |
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| 460 | |
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| 461 | if ( vio->inst == NULL ) |
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| 462 | return -1; |
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| 463 | |
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| 464 | errno = 0; |
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| 465 | |
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| 466 | while ( (r = roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
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| 467 | len += r; |
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| 468 | buf += r; |
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| 469 | count -= r; |
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| 470 | if ( count == 0 ) |
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| 471 | break; |
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| 472 | } |
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| 473 | |
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| 474 | if ( len == 0 && r == -1 ) |
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| 475 | return -1; |
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| 476 | |
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| 477 | return len; |
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| 478 | } |
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| 479 | |
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| 480 | ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 481 | size_t len = 0; |
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| 482 | ssize_t r = -1; |
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| 483 | |
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| 484 | if ( vio == NULL ) |
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| 485 | return -1; |
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| 486 | |
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| 487 | if ( vio->inst == NULL ) |
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| 488 | return -1; |
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| 489 | |
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| 490 | errno = 0; |
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| 491 | |
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| 492 | while ( (r = roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
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| 493 | len += r; |
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| 494 | buf += r; |
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| 495 | count -= r; |
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| 496 | if ( count == 0 ) |
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| 497 | break; |
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| 498 | } |
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| 499 | |
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| 500 | if ( len == 0 && r == -1 ) |
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| 501 | return -1; |
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| 502 | |
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| 503 | return len; |
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| 504 | } |
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| 505 | |
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[1247] | 506 | // TODO: we should do a some more intelgent thing here. |
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[886] | 507 | off_t roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 508 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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| 509 | } |
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| 510 | |
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[590] | 511 | //ll |
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