[2982] | 1 | //vio_jumbo.c: |
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| 2 | |
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| 3 | /* |
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[5381] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2012 |
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[2982] | 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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[3517] | 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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[2982] | 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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[2985] | 38 | int roar_vio_open_jumbo (struct roar_vio_calls * calls, struct roar_vio_calls * vio, size_t buffersize) { |
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| 39 | struct roar_vio_jumbo * self; |
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| 40 | |
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| 41 | if ( (self = roar_mm_malloc(sizeof(struct roar_vio_jumbo))) == NULL ) { |
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| 42 | return -1; |
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| 43 | } |
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| 44 | |
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| 45 | memset(self, 0, sizeof(struct roar_vio_jumbo)); |
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| 46 | |
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| 47 | self->backend = vio; |
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| 48 | |
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| 49 | if ( roar_buffer_new(&(self->buffer), buffersize) == -1 ) { |
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| 50 | roar_mm_free(self); |
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| 51 | return -1; |
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| 52 | } |
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| 53 | |
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| 54 | memset(calls, 0, sizeof(struct roar_vio_calls)); |
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[5388] | 55 | calls->flags = ROAR_VIO_FLAGS_NONE; |
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| 56 | calls->refc = 1; |
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[2985] | 57 | calls->inst = self; |
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| 58 | calls->close = roar_vio_jumbo_close; |
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| 59 | calls->read = roar_vio_jumbo_read; |
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| 60 | calls->write = roar_vio_jumbo_write; |
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| 61 | calls->lseek = roar_vio_jumbo_lseek; |
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| 62 | calls->sync = roar_vio_jumbo_sync; |
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| 63 | calls->ctl = roar_vio_jumbo_ctl; |
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| 64 | |
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| 65 | return 0; |
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| 66 | } |
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| 67 | |
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| 68 | int roar_vio_jumbo_close (struct roar_vio_calls * vio) { |
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| 69 | struct roar_vio_jumbo * self = vio->inst; |
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| 70 | |
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| 71 | if ( roar_vio_jumbo_sync(vio) == -1 ) |
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| 72 | return -1; |
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| 73 | |
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| 74 | roar_buffer_free(self->buffer); |
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| 75 | roar_mm_free(self); |
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| 76 | |
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| 77 | return 0; |
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| 78 | } |
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| 79 | |
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| 80 | ssize_t roar_vio_jumbo_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 81 | struct roar_vio_jumbo * self = vio->inst; |
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| 82 | |
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| 83 | return roar_vio_read(self->backend, buf, count); |
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| 84 | } |
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| 85 | |
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| 86 | ssize_t roar_vio_jumbo_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 87 | struct roar_vio_jumbo * self = vio->inst; |
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| 88 | size_t buflen; |
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| 89 | void * data; |
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| 90 | |
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[2987] | 91 | ROAR_DBG("roar_vio_jumbo_write(vio=%p, buf=%p, count=%lu) = ?", vio, buf, (unsigned long) count); |
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| 92 | |
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[2985] | 93 | if ( roar_buffer_get_len(self->buffer, &buflen) == -1 ) |
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| 94 | return -1; |
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| 95 | |
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[2987] | 96 | ROAR_DBG("roar_vio_jumbo_write(vio=%p, buf=%p, count=%lu) = ?", vio, buf, (unsigned long) count); |
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| 97 | |
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[2985] | 98 | if ( roar_buffer_get_data(self->buffer, &data) == -1 ) |
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| 99 | return -1; |
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| 100 | |
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[2987] | 101 | ROAR_DBG("roar_vio_jumbo_write(vio=%p, buf=%p, count=%lu) = ?", vio, buf, (unsigned long) count); |
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| 102 | |
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[2985] | 103 | if ( (self->pos + count) > buflen ) { |
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| 104 | if ( roar_vio_jumbo_sync(vio) == -1 ) |
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| 105 | return -1; |
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| 106 | |
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[2988] | 107 | // in case we write something that is longer than the buffer |
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[3046] | 108 | if ( count > buflen ) { |
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[2988] | 109 | return roar_vio_write(self->backend, data, count); |
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| 110 | } |
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| 111 | |
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[2985] | 112 | memcpy(data, buf, count); |
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| 113 | self->pos = count; |
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| 114 | } else { |
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| 115 | memcpy(data + self->pos, buf, count); |
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| 116 | self->pos += count; |
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| 117 | } |
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| 118 | |
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[2987] | 119 | ROAR_DBG("roar_vio_jumbo_write(vio=%p, buf=%p, count=%lu) = ?", vio, buf, (unsigned long) count); |
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| 120 | |
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| 121 | return count; |
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[2985] | 122 | } |
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| 123 | |
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[5278] | 124 | roar_off_t roar_vio_jumbo_lseek (struct roar_vio_calls * vio, roar_off_t offset, int whence) { |
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[2985] | 125 | struct roar_vio_jumbo * self = vio->inst; |
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| 126 | |
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| 127 | if ( roar_vio_jumbo_sync(vio) == -1 ) |
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[5278] | 128 | return (roar_off_t) -1; |
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[2985] | 129 | |
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| 130 | return roar_vio_lseek(self->backend, offset, whence); |
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| 131 | } |
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| 132 | |
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| 133 | int roar_vio_jumbo_sync (struct roar_vio_calls * vio) { |
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| 134 | struct roar_vio_jumbo * self = vio->inst; |
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| 135 | void * data; |
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| 136 | |
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| 137 | if ( self->pos == 0 ) |
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| 138 | return 0; |
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| 139 | |
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| 140 | if ( roar_buffer_get_data(self->buffer, &data) == -1 ) |
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| 141 | return -1; |
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| 142 | |
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| 143 | // TODO: do this a bit more intelergent (RE?) |
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[5270] | 144 | if ( roar_vio_write(self->backend, data, self->pos) != (ssize_t)self->pos ) |
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[2985] | 145 | return -1; |
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| 146 | |
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| 147 | self->pos = 0; |
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| 148 | |
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| 149 | return 0; |
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| 150 | } |
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| 151 | |
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[5278] | 152 | int roar_vio_jumbo_ctl (struct roar_vio_calls * vio, roar_vio_ctl_t cmd, void * data) { |
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[5276] | 153 | struct roar_vio_jumbo * self = vio->inst; |
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| 154 | |
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| 155 | switch (cmd) { |
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| 156 | case ROAR_VIO_CTL_NONBLOCK: |
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| 157 | return roar_vio_ctl(self->backend, cmd, data); |
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| 158 | break; |
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| 159 | } |
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| 160 | |
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| 161 | roar_err_set(ROAR_ERROR_BADRQC); |
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[2985] | 162 | return -1; |
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| 163 | } |
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| 164 | |
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[2982] | 165 | //ll |
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