1 | //vio.h: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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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, 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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35 | #ifndef _LIBROARVIO_H_ |
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36 | #define _LIBROARVIO_H_ |
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37 | |
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38 | #include "libroar.h" |
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39 | |
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40 | // CTLs: |
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41 | |
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42 | // stream: |
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43 | #define ROAR_VIO_CTL_SET_STREAM 0x00010001 /* normal streams */ |
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44 | #define ROAR_VIO_CTL_GET_STREAM 0x00010002 |
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45 | |
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46 | #define ROAR_VIO_CTL_SET_SSTREAM 0x00011001 /* server streams */ |
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47 | #define ROAR_VIO_CTL_GET_SSTREAM 0x00011002 |
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48 | |
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49 | #define ROAR_VIO_CTL_GET_DELAY 0x00010011 /* return in bytes as the vio interface */ |
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50 | /* does not know anything about streams */ |
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51 | |
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52 | // sys io: |
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53 | |
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54 | struct roar_vio_calls { |
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55 | void * inst; |
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56 | /* |
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57 | ssize_t (*read) (int fd, void *buf, size_t count, void * inst); |
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58 | ssize_t (*write)(int fd, void *buf, size_t count, void * inst); |
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59 | off_t (*lseek)(int fildes, off_t offset, int whence, void * inst); |
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60 | */ |
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61 | ssize_t (*read )(struct roar_vio_calls * vio, void *buf, size_t count); |
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62 | ssize_t (*write )(struct roar_vio_calls * vio, void *buf, size_t count); |
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63 | off_t (*lseek )(struct roar_vio_calls * vio, off_t offset, int whence); |
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64 | int (*nonblock)(struct roar_vio_calls * vio, int state); |
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65 | int (*sync )(struct roar_vio_calls * vio); |
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66 | int (*ctl )(struct roar_vio_calls * vio, int cmd, void * data); |
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67 | }; |
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68 | |
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69 | int roar_vio_init_calls (struct roar_vio_calls * calls); |
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70 | |
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71 | int roar_vio_set_inst (struct roar_vio_calls * vio, void * inst); |
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72 | int roar_vio_set_fh (struct roar_vio_calls * vio, int fh); |
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73 | |
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74 | int roar_vio_get_fh (struct roar_vio_calls * vio); |
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75 | |
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76 | ssize_t roar_vio_read (struct roar_vio_calls * vio, void *buf, size_t count); |
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77 | ssize_t roar_vio_write (struct roar_vio_calls * vio, void *buf, size_t count); |
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78 | off_t roar_vio_lseek (struct roar_vio_calls * vio, off_t offset, int whence); |
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79 | int roar_vio_nonblock(struct roar_vio_calls * vio, int state); |
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80 | int roar_vio_sync (struct roar_vio_calls * vio); |
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81 | int roar_vio_ctl (struct roar_vio_calls * vio, int cmd, void * data); |
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82 | |
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83 | |
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84 | // possible VIOs: |
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85 | |
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86 | // basic |
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87 | ssize_t roar_vio_basic_read (struct roar_vio_calls * vio, void *buf, size_t count); |
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88 | ssize_t roar_vio_basic_write (struct roar_vio_calls * vio, void *buf, size_t count); |
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89 | off_t roar_vio_basic_lseek (struct roar_vio_calls * vio, off_t offset, int whence); |
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90 | int roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state); |
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91 | int roar_vio_basic_sync (struct roar_vio_calls * vio); |
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92 | |
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93 | // null |
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94 | // this is read an write in one! |
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95 | ssize_t roar_vio_null_rw (struct roar_vio_calls * vio, void *buf, size_t count); |
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96 | |
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97 | // pass |
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98 | |
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99 | ssize_t roar_vio_pass_read (struct roar_vio_calls * vio, void *buf, size_t count); |
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100 | ssize_t roar_vio_pass_write(struct roar_vio_calls * vio, void *buf, size_t count); |
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101 | off_t roar_vio_pass_lseek(struct roar_vio_calls * vio, off_t offset, int whence); |
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102 | |
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103 | // re-read/write |
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104 | |
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105 | ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count); |
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106 | ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count); |
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107 | off_t roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence); |
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108 | |
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109 | |
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110 | |
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111 | #endif |
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112 | |
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113 | //ll |
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