[0] | 1 | //buffer.c: |
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| 2 | |
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[690] | 3 | /* |
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[4708] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2011 |
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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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[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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[690] | 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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[0] | 36 | #include "libroar.h" |
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| 37 | |
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[4516] | 38 | struct roar_buffer_ring { |
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| 39 | size_t read_pos; |
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| 40 | size_t write_pos; |
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| 41 | }; |
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| 42 | |
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| 43 | struct roar_buffer { |
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| 44 | size_t refc; |
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| 45 | size_t len; |
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| 46 | size_t user_len; |
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| 47 | int flags; |
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| 48 | void * data; |
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| 49 | void * user_data; |
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| 50 | union { |
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| 51 | void * vp; |
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| 52 | int32_t i32; |
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| 53 | struct roar_buffer_ring ring; |
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| 54 | } meta; |
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[4901] | 55 | int type; |
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[4516] | 56 | struct roar_buffer * next; |
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| 57 | }; |
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[1215] | 58 | |
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[5011] | 59 | #define _ckbuf_free(m) if ( buf == NULL || (m) ) { roar_err_set(ROAR_ERROR_FAULT); return -1; } |
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| 60 | #define _ckbuf(m) _ckbuf_free((m)); if ( _ckmem_corruption(buf) == -1 ) return -1; |
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| 61 | |
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| 62 | static int inline _ckmem_corruption(struct roar_buffer * buf) { |
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| 63 | int flags = buf->flags & (ROAR_BUFFER_FLAG_USEABLE|ROAR_BUFFER_FLAG_FREED); |
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| 64 | |
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| 65 | ROAR_DBG("_ckmem_corruption(buf=%p{.flags=0x%.4x, ...} = ?", buf, buf->flags); |
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| 66 | |
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| 67 | if ( flags == ROAR_BUFFER_FLAG_USEABLE ) { |
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| 68 | // seems ok, continue with next check. |
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| 69 | } else if ( flags == ROAR_BUFFER_FLAG_FREED ) { |
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| 70 | roar_panic(ROAR_FATAL_ERROR_MEMORY_USED_AFTER_FREE, NULL); |
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| 71 | roar_err_set(ROAR_ERROR_FAULT); |
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| 72 | return -1; |
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| 73 | } else { |
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| 74 | roar_panic(ROAR_FATAL_ERROR_MEMORY_CORRUPTION, NULL); |
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| 75 | roar_err_set(ROAR_ERROR_BADCKSUM); |
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| 76 | return -1; |
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| 77 | } |
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| 78 | |
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| 79 | if ( buf->refc == 0 ) { |
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| 80 | roar_panic(ROAR_FATAL_ERROR_MEMORY_CORRUPTION, NULL); |
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| 81 | } |
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| 82 | |
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| 83 | return 0; |
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| 84 | } |
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[4905] | 85 | |
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[3764] | 86 | int roar_buffer_new_data (struct roar_buffer ** buf, size_t len, void ** data) { |
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| 87 | void * bufdata; |
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[4905] | 88 | int err; |
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[3764] | 89 | |
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| 90 | if ((bufdata = roar_mm_malloc(len)) == NULL) { |
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[1215] | 91 | return -1; |
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| 92 | } |
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| 93 | |
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[3764] | 94 | if ( roar_buffer_new_no_ma(buf, len, bufdata) == -1 ) { |
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[4905] | 95 | err = roar_error; |
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[3764] | 96 | roar_mm_free(bufdata); |
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[4905] | 97 | roar_err_set(err); |
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[1215] | 98 | return -1; |
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| 99 | } |
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| 100 | |
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| 101 | if ( roar_buffer_set_flag(*buf, ROAR_BUFFER_FLAG_NOFREE, ROAR_BUFFER_RESET) == -1 ) { |
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[4905] | 102 | err = roar_error; |
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[1215] | 103 | roar_buffer_free(*buf); |
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[3764] | 104 | roar_mm_free(bufdata); |
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[4905] | 105 | roar_err_set(err); |
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[1215] | 106 | return -1; |
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| 107 | } |
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| 108 | |
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[3764] | 109 | if ( data != NULL ) |
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| 110 | *data = bufdata; |
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| 111 | |
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[1215] | 112 | return 0; |
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| 113 | } |
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| 114 | |
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| 115 | int roar_buffer_new_no_ma(struct roar_buffer ** buf, size_t len, void * data) { // no internal malloc |
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[0] | 116 | struct roar_buffer * new; |
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| 117 | |
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| 118 | ROAR_DBG("buffer_new(buf=%p, len=%i) = ?", buf, len); |
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| 119 | |
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[5011] | 120 | _ckbuf_free(data == NULL) |
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[1215] | 121 | |
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[2976] | 122 | if ((new = roar_mm_malloc(sizeof(struct roar_buffer))) == NULL) { |
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[0] | 123 | *buf = NULL; |
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| 124 | return -1; |
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| 125 | } |
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| 126 | |
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[4901] | 127 | new->refc = 1; |
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[4522] | 128 | |
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[1215] | 129 | new->data = data; |
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| 130 | |
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[5011] | 131 | new->flags = ROAR_BUFFER_FLAG_NONE|ROAR_BUFFER_FLAG_NOFREE|ROAR_BUFFER_FLAG_USEABLE; |
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[4901] | 132 | new->type = -1; |
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[0] | 133 | |
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| 134 | new->user_data = new->data; |
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| 135 | |
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| 136 | new->next = NULL; |
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| 137 | |
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| 138 | new->len = len; |
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| 139 | new->user_len = len; |
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| 140 | *buf = new; |
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| 141 | |
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| 142 | ROAR_DBG("buffer_new(buf=%p, len=%i): New buffer at %p", buf, len, new); |
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| 143 | |
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| 144 | return 0; |
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| 145 | } |
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| 146 | |
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[4522] | 147 | int roar_buffer_ref (struct roar_buffer * buf) { |
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[4905] | 148 | _ckbuf(0) |
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[4522] | 149 | |
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| 150 | buf->refc++; |
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| 151 | |
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| 152 | return 0; |
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| 153 | } |
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| 154 | |
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| 155 | int roar_buffer_unref (struct roar_buffer * buf) { |
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[5011] | 156 | struct roar_buffer * next, * cur; |
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| 157 | int flags; |
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| 158 | |
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| 159 | ROAR_DBG("roar_buffer_unref(buf=%p) = ?", buf); |
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| 160 | |
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| 161 | _ckbuf_free(0) |
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| 162 | |
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| 163 | ROAR_DBG("roar_buffer_unref(buf=%p) = ?", buf); |
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[0] | 164 | |
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[5011] | 165 | flags = buf->flags & (ROAR_BUFFER_FLAG_USEABLE|ROAR_BUFFER_FLAG_FREED); |
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| 166 | if ( flags == ROAR_BUFFER_FLAG_FREED ) { |
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| 167 | roar_panic(ROAR_FATAL_ERROR_MEMORY_DOUBLE_FREE, NULL); |
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| 168 | } |
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| 169 | |
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| 170 | _ckmem_corruption(buf); |
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| 171 | |
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| 172 | ROAR_DBG("roar_buffer_unref(buf=%p) = ?", buf); |
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[0] | 173 | |
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[4522] | 174 | if ( buf->refc == 0 ) { |
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| 175 | ROAR_WARN("roar_buffer_unref(buf=%p): Ref counter is wrong. assuming one."); |
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| 176 | buf->refc = 1; |
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[4973] | 177 | roar_panic(ROAR_FATAL_ERROR_MEMORY_CORRUPTION, NULL); |
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[4522] | 178 | } |
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| 179 | |
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| 180 | buf->refc--; |
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| 181 | |
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[5011] | 182 | if ( buf->refc ) { |
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| 183 | ROAR_DBG("roar_buffer_unref(buf=%p) = 0", buf); |
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[4522] | 184 | return 0; |
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[0] | 185 | } |
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| 186 | |
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[5011] | 187 | ROAR_DBG("roar_buffer_unref(buf=%p) = ?", buf); |
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| 188 | |
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| 189 | cur = buf->next; |
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| 190 | while (cur != NULL) { |
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| 191 | flags = cur->flags & (ROAR_BUFFER_FLAG_USEABLE|ROAR_BUFFER_FLAG_FREED); |
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| 192 | if ( flags == ROAR_BUFFER_FLAG_FREED ) { |
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| 193 | roar_panic(ROAR_FATAL_ERROR_MEMORY_DOUBLE_FREE, NULL); |
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| 194 | } |
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| 195 | |
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| 196 | ROAR_DBG("roar_buffer_unref(buf=%p) = ?", buf); |
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| 197 | |
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| 198 | _ckmem_corruption(cur); |
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| 199 | |
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| 200 | if ( roar_buffer_get_flag(cur, ROAR_BUFFER_FLAG_NOFREE) != 1 ) |
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| 201 | roar_mm_free(cur->data); |
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| 202 | |
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| 203 | cur->flags = ROAR_BUFFER_FLAG_FREED; |
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| 204 | next = cur->next; |
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| 205 | roar_mm_free(cur); |
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| 206 | cur = next; |
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| 207 | } |
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| 208 | |
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| 209 | ROAR_DBG("roar_buffer_unref(buf=%p) = ?", buf); |
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| 210 | |
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| 211 | if ( !(buf->flags & ROAR_BUFFER_FLAG_NOFREE) ) |
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[2976] | 212 | roar_mm_free(buf->data); |
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[1215] | 213 | |
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[5011] | 214 | ROAR_DBG("roar_buffer_unref(buf=%p): setting flags = ROAR_BUFFER_FLAG_FREED", buf); |
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| 215 | buf->flags = ROAR_BUFFER_FLAG_FREED; |
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| 216 | |
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[2976] | 217 | roar_mm_free(buf); |
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[0] | 218 | |
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[5011] | 219 | ROAR_DBG("roar_buffer_unref(buf=%p) = 0", buf); |
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[0] | 220 | return 0; |
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| 221 | } |
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| 222 | |
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| 223 | int roar_buffer_delete (struct roar_buffer * buf, struct roar_buffer ** next) { |
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| 224 | if ( buf == NULL ) { |
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| 225 | if ( next != NULL ) |
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| 226 | *next = NULL; |
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[4905] | 227 | roar_err_set(ROAR_ERROR_FAULT); |
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[0] | 228 | return -1; |
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| 229 | } |
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| 230 | |
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| 231 | ROAR_DBG("buffer_delete(buf=%p, next=%p) = ?", buf, next); |
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| 232 | |
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| 233 | if ( next != NULL ) |
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| 234 | *next = buf->next; |
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| 235 | |
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[2976] | 236 | if ( roar_buffer_get_flag(buf, ROAR_BUFFER_FLAG_NOFREE) != 1 ) |
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| 237 | roar_mm_free(buf->data); |
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| 238 | |
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| 239 | roar_mm_free(buf); |
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[0] | 240 | |
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| 241 | ROAR_DBG("buffer_delete(buf=%p, next=%p) = 0", buf, next); |
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| 242 | return 0; |
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| 243 | } |
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| 244 | |
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| 245 | int roar_buffer_add (struct roar_buffer * buf, struct roar_buffer * next) { |
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[1953] | 246 | unsigned int deep = 0; |
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| 247 | |
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[4905] | 248 | _ckbuf(0) |
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[0] | 249 | |
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| 250 | ROAR_DBG("buffer_add(buf=%p, next=%p) = ?", buf, next); |
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| 251 | |
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[4905] | 252 | if ( buf->flags & ROAR_BUFFER_FLAG_RING ) { |
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| 253 | roar_err_set(ROAR_ERROR_INVAL); |
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[3020] | 254 | return -1; |
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[4905] | 255 | } |
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[3020] | 256 | |
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[1953] | 257 | if ( buf == next ) { |
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| 258 | ROAR_ERR("buffer_add(*): both pointer are of the same destination, This is a error in the application"); |
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[4905] | 259 | roar_err_set(ROAR_ERROR_INVAL); |
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[1953] | 260 | return -1; |
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| 261 | } |
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| 262 | |
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[0] | 263 | while ( buf->next != NULL ) { |
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[302] | 264 | ROAR_DBG("buffer_add(*): buf=%p, next=%p (len=%i)", buf, buf->next, buf->user_len); |
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[0] | 265 | // ROAR_DBG("buffer_add(): buf=%p, buf->next=%p", buf, buf->next); |
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| 266 | buf = buf->next; |
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[1953] | 267 | deep++; |
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| 268 | |
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| 269 | if ( buf == next ) { |
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| 270 | ROAR_ERR("buffer_add(*): Can not add buffer: loop detected at deep %u. This is a error in the application", deep); |
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[4905] | 271 | // why don't we return here? |
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[1953] | 272 | } |
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[0] | 273 | } |
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| 274 | |
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| 275 | buf->next = next; |
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| 276 | |
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[1953] | 277 | ROAR_DBG("buffer_add(*): adding buffer at deep %u", deep); |
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| 278 | |
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[0] | 279 | return 0; |
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| 280 | } |
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| 281 | |
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[4516] | 282 | int roar_buffer_clear_next (struct roar_buffer * buf) { |
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[4905] | 283 | _ckbuf(0) |
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[4516] | 284 | |
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| 285 | buf->next = NULL; |
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| 286 | |
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| 287 | return 0; |
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| 288 | } |
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| 289 | |
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[0] | 290 | int roar_buffer_get_next (struct roar_buffer * buf, struct roar_buffer ** next) { |
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[4905] | 291 | _ckbuf(0) |
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[0] | 292 | |
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| 293 | *next = buf->next; |
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| 294 | |
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| 295 | return 0; |
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| 296 | } |
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| 297 | |
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[3020] | 298 | int roar_buffer_ring_new (struct roar_buffer ** buf, size_t len, int free_running) { |
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| 299 | struct roar_buffer * n; |
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| 300 | |
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[5011] | 301 | _ckbuf_free(0) |
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[4905] | 302 | |
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| 303 | if ( len == 0 ) { |
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| 304 | roar_err_set(ROAR_ERROR_RANGE); |
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[3020] | 305 | return -1; |
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[4905] | 306 | } |
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[3020] | 307 | |
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| 308 | // just to be sure: |
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| 309 | *buf = NULL; |
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| 310 | |
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| 311 | if ( roar_buffer_new(&n, len) == -1 ) |
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| 312 | return -1; |
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| 313 | |
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| 314 | n->flags |= ROAR_BUFFER_FLAG_RING; |
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| 315 | |
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| 316 | if ( free_running ) |
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| 317 | n->flags |= ROAR_BUFFER_FLAG_FREE_RUNNING; |
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| 318 | |
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| 319 | n->meta.ring.read_pos = 0; |
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| 320 | n->meta.ring.write_pos = 0; |
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| 321 | |
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| 322 | memset(n->data, 0, n->len); |
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| 323 | |
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| 324 | *buf = n; |
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| 325 | |
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| 326 | return 0; |
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| 327 | } |
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| 328 | |
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[0] | 329 | int roar_buffer_get_data (struct roar_buffer * buf, void ** data) { |
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[4905] | 330 | _ckbuf(0) |
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[0] | 331 | |
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| 332 | *data = buf->user_data; |
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| 333 | |
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| 334 | return 0; |
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| 335 | } |
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| 336 | |
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| 337 | int roar_buffer_set_offset (struct roar_buffer * buf, size_t off) { |
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[4905] | 338 | _ckbuf(0) |
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| 339 | |
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| 340 | if ( off > buf->user_len ) { |
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| 341 | roar_err_set(ROAR_ERROR_RANGE); |
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[0] | 342 | return -1; |
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[4905] | 343 | } |
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[0] | 344 | |
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| 345 | buf->user_len -= off; |
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| 346 | buf->user_data += off; |
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| 347 | |
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| 348 | return 0; |
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| 349 | } |
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| 350 | |
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[904] | 351 | int roar_buffer_shift_out (struct roar_buffer ** buf, void * data, size_t * len) { |
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| 352 | size_t todo, cl; |
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| 353 | struct roar_buffer * cur; |
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| 354 | void * cd; |
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| 355 | |
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[5011] | 356 | _ckbuf_free(len == NULL || data == NULL); |
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[904] | 357 | |
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[996] | 358 | if ( *buf == NULL ) { |
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| 359 | ROAR_DBG("roar_buffer_shift_out(buf=%p, data=%p, len={%lu}) = -1 // Invalid pointer to buffer ring", buf, data, (unsigned long)len); |
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[4905] | 360 | roar_err_set(ROAR_ERROR_FAULT); |
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[904] | 361 | return -1; |
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[996] | 362 | } |
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[904] | 363 | |
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| 364 | todo = *len; |
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| 365 | cur = *buf; |
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| 366 | |
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| 367 | *len = 0; |
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| 368 | |
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[2066] | 369 | while (todo && cur != NULL) { |
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[904] | 370 | ROAR_DBG("roar_buffer_shift_out(*): todo=%u, cur=%p", (unsigned int) todo, cur); |
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| 371 | |
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[5013] | 372 | _ckmem_corruption(cur); |
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| 373 | |
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[904] | 374 | if ( roar_buffer_get_len(cur, &cl) == -1 ) |
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| 375 | return -1; |
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| 376 | |
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| 377 | if ( cl > todo ) { |
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| 378 | if ( roar_buffer_get_data(cur, &cd) == -1 ) |
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| 379 | return -1; |
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| 380 | |
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| 381 | cl = todo; |
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| 382 | |
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| 383 | memcpy(data, cd, cl); |
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| 384 | todo -= cl; |
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| 385 | data += cl; |
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| 386 | *len += cl; |
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| 387 | |
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| 388 | if ( roar_buffer_set_offset(cur, cl) == -1 ) |
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| 389 | return -1; |
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| 390 | } else { |
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| 391 | if ( roar_buffer_get_data(cur, &cd) == -1 ) |
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| 392 | return -1; |
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| 393 | |
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| 394 | memcpy(data, cd, cl); |
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| 395 | todo -= cl; |
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| 396 | data += cl; |
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| 397 | *len += cl; |
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| 398 | |
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| 399 | if ( roar_buffer_next(&cur) == -1 ) |
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| 400 | return -1; |
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| 401 | } |
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| 402 | |
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| 403 | /* |
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| 404 | if ( cur == NULL ) |
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| 405 | break; |
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| 406 | */ |
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| 407 | } |
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| 408 | |
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| 409 | *buf = cur; |
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| 410 | |
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[996] | 411 | return 0; |
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[904] | 412 | } |
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| 413 | |
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[0] | 414 | int roar_buffer_set_meta (struct roar_buffer * buf, void * meta) { |
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[4905] | 415 | _ckbuf(0) |
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[0] | 416 | |
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[2333] | 417 | buf->meta.vp = meta; |
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[0] | 418 | |
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| 419 | return 0; |
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| 420 | } |
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| 421 | |
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| 422 | int roar_buffer_get_meta (struct roar_buffer * buf, void ** meta) { |
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[4905] | 423 | _ckbuf(meta == NULL) |
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[2333] | 424 | |
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| 425 | *meta = buf->meta.vp; |
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| 426 | |
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| 427 | return 0; |
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| 428 | } |
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| 429 | |
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| 430 | int roar_buffer_set_meta_i32(struct roar_buffer * buf, int32_t meta) { |
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[4905] | 431 | _ckbuf(0) |
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[0] | 432 | |
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[2333] | 433 | buf->meta.i32 = meta; |
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| 434 | |
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| 435 | return 0; |
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| 436 | } |
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| 437 | |
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| 438 | int roar_buffer_get_meta_i32(struct roar_buffer * buf, int32_t * meta) { |
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[4905] | 439 | _ckbuf(meta == NULL) |
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[2333] | 440 | |
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| 441 | *meta = buf->meta.i32; |
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[0] | 442 | |
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| 443 | return 0; |
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| 444 | } |
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| 445 | |
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[4901] | 446 | int roar_buffer_set_type (struct roar_buffer * buf, int type) { |
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[4905] | 447 | _ckbuf(0) |
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[4901] | 448 | |
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[4903] | 449 | switch (type) { |
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| 450 | case ROAR_VIO_DFT_RAW: |
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| 451 | case ROAR_VIO_DFT_PACKET: |
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| 452 | case ROAR_VIO_DFT_UNFRAMED: |
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[4988] | 453 | case ROAR_VIO_DFT_OGG_PACKET: |
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| 454 | case ROAR_VIO_DFT_OGG_PAGE: |
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[4903] | 455 | break; |
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| 456 | default: |
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[4905] | 457 | roar_err_set(ROAR_ERROR_NOTSUP); |
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[4903] | 458 | return -1; |
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| 459 | } |
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| 460 | |
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[4901] | 461 | buf->type = type; |
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| 462 | |
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| 463 | return 0; |
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| 464 | } |
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| 465 | |
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| 466 | int roar_buffer_get_type (struct roar_buffer * buf, int * type) { |
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[4905] | 467 | _ckbuf(type == NULL) |
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[4901] | 468 | |
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| 469 | *type = buf->type; |
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| 470 | |
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| 471 | return 0; |
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| 472 | } |
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| 473 | |
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[0] | 474 | int roar_buffer_set_len (struct roar_buffer * buf, size_t len) { |
---|
[2334] | 475 | size_t totlen; |
---|
| 476 | void * newbuf; |
---|
| 477 | |
---|
[4905] | 478 | _ckbuf(0) |
---|
[0] | 479 | |
---|
[3032] | 480 | // handle specal case where user length is zero: |
---|
| 481 | if ( len && !buf->user_len ) { |
---|
| 482 | buf->user_data = buf->data; |
---|
| 483 | buf->user_len = buf->len; |
---|
| 484 | } |
---|
| 485 | |
---|
[2334] | 486 | if ( len > buf->user_len ) { |
---|
[3021] | 487 | // we can only enlage a buffer if it's one of our own memory segments |
---|
[4905] | 488 | if ( buf->flags & ROAR_BUFFER_FLAG_NOFREE ) { |
---|
| 489 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
[3021] | 490 | return -1; |
---|
[4905] | 491 | } |
---|
[3021] | 492 | |
---|
[4989] | 493 | totlen = (buf->len - buf->user_len) + len; |
---|
[3021] | 494 | newbuf = roar_mm_realloc(buf->data, totlen); |
---|
[2334] | 495 | if ( newbuf == NULL ) |
---|
| 496 | return -1; |
---|
| 497 | |
---|
[4988] | 498 | buf->user_data = newbuf + (buf->user_data - buf->data); |
---|
[4989] | 499 | buf->user_len = len; |
---|
[2334] | 500 | buf->data = newbuf; |
---|
[4989] | 501 | buf->len = totlen; |
---|
[2334] | 502 | } else { |
---|
| 503 | buf->user_len = len; |
---|
| 504 | } |
---|
[0] | 505 | |
---|
| 506 | return 0; |
---|
| 507 | } |
---|
| 508 | |
---|
| 509 | int roar_buffer_get_len (struct roar_buffer * buf, size_t * len) { |
---|
[4905] | 510 | _ckbuf(0) |
---|
[0] | 511 | |
---|
| 512 | *len = buf->user_len; |
---|
| 513 | |
---|
| 514 | return 0; |
---|
| 515 | } |
---|
| 516 | |
---|
[1215] | 517 | int roar_buffer_set_flag (struct roar_buffer * buf, int flag, int reset) { |
---|
[4905] | 518 | _ckbuf(0) |
---|
[1215] | 519 | |
---|
| 520 | buf->flags |= flag; |
---|
| 521 | |
---|
| 522 | if ( reset ) |
---|
| 523 | buf->flags -= flag; |
---|
| 524 | |
---|
| 525 | return 0; |
---|
| 526 | } |
---|
| 527 | |
---|
| 528 | int roar_buffer_get_flag (struct roar_buffer * buf, int flag) { |
---|
[4905] | 529 | _ckbuf(0) |
---|
[1215] | 530 | |
---|
| 531 | return buf->flags & flag; |
---|
| 532 | } |
---|
| 533 | |
---|
[46] | 534 | int roar_buffer_duplicate (struct roar_buffer * buf, struct roar_buffer ** copy) { |
---|
| 535 | struct roar_buffer * cur = buf; |
---|
| 536 | struct roar_buffer * new; |
---|
[48] | 537 | void * od, * nd; |
---|
[4905] | 538 | int err; |
---|
| 539 | |
---|
| 540 | _ckbuf(copy == NULL) |
---|
[46] | 541 | |
---|
| 542 | *copy = NULL; |
---|
| 543 | |
---|
[4905] | 544 | while (cur != NULL) { |
---|
[46] | 545 | if ( roar_buffer_new(&new, cur->user_len) == -1 ) { |
---|
[4905] | 546 | err = roar_error; |
---|
[46] | 547 | roar_buffer_free(*copy); |
---|
[4905] | 548 | roar_err_set(err); |
---|
[46] | 549 | return -1; |
---|
| 550 | } |
---|
| 551 | |
---|
| 552 | if ( *copy == NULL ) |
---|
| 553 | *copy = new; |
---|
| 554 | |
---|
[48] | 555 | roar_buffer_get_data(cur, &od); |
---|
| 556 | roar_buffer_get_data(new, &nd); |
---|
| 557 | memcpy(nd, od, cur->user_len); |
---|
| 558 | |
---|
[46] | 559 | roar_buffer_add(*copy, new); |
---|
| 560 | |
---|
| 561 | cur = cur->next; |
---|
| 562 | } |
---|
[4905] | 563 | |
---|
[46] | 564 | return 0; |
---|
| 565 | } |
---|
| 566 | |
---|
[7] | 567 | int roar_buffer_ring_stats (struct roar_buffer * buf, struct roar_buffer_stats * stats) { |
---|
[4905] | 568 | _ckbuf(0) |
---|
[7] | 569 | |
---|
| 570 | stats->parts = 0; |
---|
| 571 | stats->bytes = 0; |
---|
| 572 | stats->memory_usage = 0; |
---|
| 573 | |
---|
[4905] | 574 | while (buf != NULL ) { |
---|
[7] | 575 | stats->parts++; |
---|
| 576 | stats->bytes += buf->user_len; |
---|
| 577 | stats->memory_usage += buf->len + sizeof(struct roar_buffer); |
---|
| 578 | buf = buf->next; |
---|
| 579 | } |
---|
| 580 | |
---|
| 581 | return 0; |
---|
| 582 | } |
---|
| 583 | |
---|
[3020] | 584 | int roar_buffer_ring_read (struct roar_buffer * buf, void * data, size_t * len) { |
---|
[4615] | 585 | struct roar_buffer_ring * ring; |
---|
| 586 | size_t havelen; |
---|
| 587 | size_t done; |
---|
| 588 | size_t tmp; |
---|
| 589 | |
---|
[4905] | 590 | _ckbuf(len == NULL) |
---|
| 591 | |
---|
[3020] | 592 | if ( buf == NULL || len == NULL ) |
---|
| 593 | return -1; |
---|
| 594 | |
---|
[4905] | 595 | if ( data == NULL && *len != 0 ) { |
---|
| 596 | roar_err_set(ROAR_ERROR_FAULT); |
---|
[3020] | 597 | return -1; |
---|
[4905] | 598 | } |
---|
[3020] | 599 | |
---|
[4905] | 600 | if ( !(buf->flags & ROAR_BUFFER_FLAG_RING) ) { |
---|
| 601 | roar_err_set(ROAR_ERROR_TYPEMM); |
---|
[3020] | 602 | return -1; |
---|
[4905] | 603 | } |
---|
[3020] | 604 | |
---|
| 605 | if ( *len == 0 ) |
---|
| 606 | return 0; |
---|
| 607 | |
---|
| 608 | // we may handle this later: |
---|
[4905] | 609 | if ( *len > buf->user_len ) { |
---|
| 610 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
[3020] | 611 | return -1; |
---|
[4905] | 612 | } |
---|
[3020] | 613 | |
---|
[4615] | 614 | if ( (buf->flags & ROAR_BUFFER_FLAG_FREE_RUNNING) ) { |
---|
| 615 | if ( buf->meta.ring.read_pos >= buf->user_len ) |
---|
| 616 | buf->meta.ring.read_pos -= buf->user_len; |
---|
[3020] | 617 | |
---|
[4615] | 618 | if ( (*len + buf->meta.ring.read_pos) > buf->user_len ) { |
---|
| 619 | // wraped mode: |
---|
| 620 | memcpy(data, buf->user_data+buf->meta.ring.read_pos, buf->user_len - buf->meta.ring.read_pos); |
---|
| 621 | memcpy(data, buf->user_data, *len + buf->meta.ring.read_pos - buf->user_len); |
---|
| 622 | |
---|
| 623 | buf->meta.ring.read_pos += *len; |
---|
| 624 | buf->meta.ring.read_pos -= buf->user_len; |
---|
| 625 | return 0; |
---|
| 626 | } else { |
---|
| 627 | // unwarped mode: |
---|
| 628 | memcpy(data, buf->user_data+buf->meta.ring.read_pos, *len); |
---|
| 629 | buf->meta.ring.read_pos += *len; |
---|
| 630 | return 0; |
---|
| 631 | } |
---|
| 632 | } else { |
---|
| 633 | ring = &(buf->meta.ring); |
---|
| 634 | |
---|
| 635 | if ( ring->read_pos == ring->write_pos ) { |
---|
| 636 | *len = 0; |
---|
| 637 | return 0; |
---|
| 638 | } else if ( ring->read_pos < ring->write_pos ) { |
---|
| 639 | havelen = ring->write_pos - ring->read_pos; |
---|
| 640 | |
---|
| 641 | if ( havelen > *len ) |
---|
| 642 | havelen = *len; |
---|
| 643 | |
---|
| 644 | memcpy(data, buf->user_data+ring->read_pos, havelen); |
---|
| 645 | ring->read_pos += havelen; |
---|
[3020] | 646 | |
---|
[4615] | 647 | *len = havelen; |
---|
| 648 | return 0; |
---|
| 649 | } else { // write_pos < read_pos |
---|
| 650 | done = 0; |
---|
| 651 | |
---|
| 652 | // first pass: use data up to end of buffer |
---|
| 653 | |
---|
| 654 | havelen = buf->user_len - ring->read_pos; |
---|
| 655 | |
---|
| 656 | if ( havelen > *len ) |
---|
| 657 | havelen = *len; |
---|
| 658 | |
---|
| 659 | memcpy(data, buf->user_data+ring->read_pos, havelen); |
---|
| 660 | ring->read_pos += havelen; |
---|
| 661 | |
---|
| 662 | done += havelen; |
---|
| 663 | |
---|
| 664 | if ( ring->read_pos == buf->user_len ) { |
---|
| 665 | ring->read_pos = 0; |
---|
| 666 | } |
---|
| 667 | |
---|
| 668 | // second pass: use data from strat of buffer to write pointer |
---|
| 669 | |
---|
| 670 | if ( *len > done ) { |
---|
| 671 | tmp = *len - done; |
---|
| 672 | if ( roar_buffer_ring_read(buf, data+done, &tmp) == 0 ) { |
---|
| 673 | done += tmp; |
---|
| 674 | } |
---|
| 675 | } |
---|
| 676 | |
---|
| 677 | *len = done; |
---|
| 678 | return 0; |
---|
| 679 | } |
---|
[3020] | 680 | } |
---|
| 681 | |
---|
[4905] | 682 | roar_err_set(ROAR_ERROR_UNKNOWN); |
---|
[3020] | 683 | return -1; |
---|
| 684 | } |
---|
| 685 | |
---|
| 686 | int roar_buffer_ring_write (struct roar_buffer * buf, void * data, size_t * len) { |
---|
[4624] | 687 | struct roar_buffer_ring * ring; |
---|
| 688 | size_t havelen; |
---|
| 689 | size_t done; |
---|
| 690 | size_t tmp; |
---|
| 691 | |
---|
[4625] | 692 | ROAR_DBG("roar_buffer_ring_write(buf=%p, data=%p, len=%p) = ?", buf, data, len); |
---|
| 693 | |
---|
[4905] | 694 | _ckbuf(len == NULL) |
---|
[3020] | 695 | |
---|
[4905] | 696 | if ( data == NULL && *len != 0 ) { |
---|
| 697 | roar_err_set(ROAR_ERROR_FAULT); |
---|
[3020] | 698 | return -1; |
---|
[4905] | 699 | } |
---|
[3020] | 700 | |
---|
[4905] | 701 | if ( !(buf->flags & ROAR_BUFFER_FLAG_RING) ) { |
---|
| 702 | roar_err_set(ROAR_ERROR_TYPEMM); |
---|
[3020] | 703 | return -1; |
---|
[4905] | 704 | } |
---|
[3020] | 705 | |
---|
| 706 | if ( *len == 0 ) |
---|
| 707 | return 0; |
---|
| 708 | |
---|
| 709 | // we may handle this later: |
---|
[4905] | 710 | if ( *len > buf->user_len ) { |
---|
| 711 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
[3020] | 712 | return -1; |
---|
[4905] | 713 | } |
---|
[3020] | 714 | |
---|
[4615] | 715 | if ( (buf->flags & ROAR_BUFFER_FLAG_FREE_RUNNING) ) { |
---|
| 716 | if ( buf->meta.ring.write_pos >= buf->user_len ) |
---|
| 717 | buf->meta.ring.write_pos -= buf->user_len; |
---|
[3020] | 718 | |
---|
[4615] | 719 | if ( (*len + buf->meta.ring.write_pos) > buf->user_len ) { |
---|
| 720 | // wraped mode: |
---|
| 721 | memcpy(buf->user_data+buf->meta.ring.write_pos, data, buf->user_len - buf->meta.ring.write_pos); |
---|
| 722 | memcpy(buf->user_data, data, *len + buf->meta.ring.write_pos - buf->user_len); |
---|
[3020] | 723 | |
---|
[4615] | 724 | buf->meta.ring.write_pos += *len; |
---|
| 725 | buf->meta.ring.write_pos -= buf->user_len; |
---|
| 726 | return 0; |
---|
| 727 | } else { |
---|
| 728 | // unwarped mode: |
---|
| 729 | memcpy(buf->user_data+buf->meta.ring.write_pos, data, *len); |
---|
| 730 | buf->meta.ring.write_pos += *len; |
---|
| 731 | return 0; |
---|
| 732 | } |
---|
[3020] | 733 | } else { |
---|
[4624] | 734 | ring = &(buf->meta.ring); |
---|
| 735 | done = 0; |
---|
| 736 | |
---|
| 737 | ROAR_DBG("roar_buffer_ring_write(buf=%p, data=%p, len=%p): write_pos=%u, read_pos=%u, user_len=%u", buf, data, len, (unsigned int)ring->write_pos, (unsigned int)ring->read_pos, (unsigned int)buf->user_len); |
---|
| 738 | |
---|
| 739 | if ( ring->write_pos >= ring->read_pos ) { |
---|
[4625] | 740 | ROAR_DBG("roar_buffer_ring_write(buf=%p, data=%p, len=%p) = ?", buf, data, len); |
---|
| 741 | |
---|
[4624] | 742 | havelen = buf->user_len - ring->write_pos; |
---|
| 743 | |
---|
| 744 | if ( ring->read_pos == 0 ) |
---|
| 745 | havelen--; |
---|
| 746 | |
---|
| 747 | if ( havelen > *len ) |
---|
| 748 | havelen = *len; |
---|
| 749 | |
---|
| 750 | memcpy(buf->user_data+ring->write_pos, data, havelen); |
---|
| 751 | |
---|
| 752 | done += havelen; |
---|
| 753 | ring->write_pos += havelen; |
---|
| 754 | |
---|
| 755 | if ( ring->write_pos == buf->user_len ) |
---|
| 756 | ring->write_pos = 0; |
---|
| 757 | |
---|
| 758 | if ( *len > done && ring->read_pos != 0 ) { |
---|
| 759 | tmp = *len - done; |
---|
| 760 | if ( roar_buffer_ring_write(buf, data+done, &tmp) == 0 ) { |
---|
| 761 | done += tmp; |
---|
| 762 | } |
---|
| 763 | } |
---|
| 764 | |
---|
| 765 | *len = done; |
---|
[4625] | 766 | ROAR_DBG("roar_buffer_ring_write(buf=%p, data=%p, len=%p) = 0", buf, data, len); |
---|
[4624] | 767 | return 0; |
---|
| 768 | } else { |
---|
[4625] | 769 | ROAR_DBG("roar_buffer_ring_write(buf=%p, data=%p, len=%p) = ?", buf, data, len); |
---|
| 770 | |
---|
[4624] | 771 | // test for buffer-is-full: |
---|
| 772 | if ( (ring->write_pos + 1) == ring->read_pos ) { |
---|
| 773 | *len = 0; |
---|
[4625] | 774 | ROAR_DBG("roar_buffer_ring_write(buf=%p, data=%p, len=%p) = 0", buf, data, len); |
---|
[4624] | 775 | return 0; |
---|
| 776 | } |
---|
| 777 | |
---|
[4625] | 778 | ROAR_DBG("roar_buffer_ring_write(buf=%p, data=%p, len=%p) = ?", buf, data, len); |
---|
| 779 | |
---|
[4624] | 780 | havelen = ring->read_pos - ring->write_pos - 1; |
---|
| 781 | |
---|
| 782 | if ( havelen > *len ) |
---|
| 783 | havelen = *len; |
---|
| 784 | |
---|
| 785 | memcpy(buf->user_data+ring->write_pos, data, havelen); |
---|
| 786 | |
---|
[4625] | 787 | ring->write_pos += havelen; |
---|
[4624] | 788 | *len = havelen; |
---|
[4625] | 789 | |
---|
| 790 | ROAR_DBG("roar_buffer_ring_write(buf=%p, data=%p, len=%p) = 0", buf, data, len); |
---|
[4624] | 791 | return 0; |
---|
| 792 | } |
---|
[3020] | 793 | } |
---|
| 794 | |
---|
[4905] | 795 | roar_err_set(ROAR_ERROR_UNKNOWN); |
---|
[3020] | 796 | return -1; |
---|
| 797 | } |
---|
| 798 | |
---|
[4625] | 799 | int roar_buffer_ring_avail(struct roar_buffer * buf, size_t * readlen, size_t * writelen) { |
---|
| 800 | struct roar_buffer_ring * ring; |
---|
| 801 | size_t have; |
---|
| 802 | |
---|
[4905] | 803 | _ckbuf(0) |
---|
[4625] | 804 | |
---|
[4905] | 805 | if ( !(buf->flags & ROAR_BUFFER_FLAG_RING) ) { |
---|
| 806 | roar_err_set(ROAR_ERROR_TYPEMM); |
---|
[4625] | 807 | return -1; |
---|
[4905] | 808 | } |
---|
[4625] | 809 | |
---|
| 810 | ring = &(buf->meta.ring); |
---|
| 811 | |
---|
| 812 | ROAR_DBG("roar_buffer_ring_avail(buf=%p, readlen=%p, writelen=%p) = ?", buf, readlen, writelen); |
---|
| 813 | |
---|
| 814 | if ( readlen != NULL ) { |
---|
| 815 | have = 0; |
---|
| 816 | |
---|
| 817 | if ( ring->write_pos >= ring->read_pos ) { |
---|
| 818 | have = ring->write_pos - ring->read_pos; |
---|
| 819 | } else { |
---|
| 820 | have = buf->user_len - ring->read_pos; |
---|
| 821 | have += ring->write_pos; |
---|
| 822 | have -= 1; |
---|
| 823 | } |
---|
| 824 | |
---|
| 825 | *readlen = have; |
---|
| 826 | ROAR_DBG("roar_buffer_ring_avail(buf=%p, readlen=%p, writelen=%p): readlen=%llu", buf, readlen, writelen, (unsigned long long int)have); |
---|
| 827 | } |
---|
| 828 | |
---|
| 829 | if ( writelen != NULL ) { |
---|
| 830 | have = 0; |
---|
| 831 | |
---|
| 832 | if ( ring->read_pos > ring->write_pos ) { |
---|
| 833 | have = ring->read_pos - ring->write_pos - 1; |
---|
| 834 | } else { |
---|
| 835 | have = buf->user_len - ring->write_pos; |
---|
| 836 | have += ring->read_pos; |
---|
| 837 | have -= 1; |
---|
| 838 | } |
---|
| 839 | |
---|
| 840 | *writelen = have; |
---|
| 841 | ROAR_DBG("roar_buffer_ring_avail(buf=%p, readlen=%p, writelen=%p): readlen=%llu", buf, readlen, writelen, (unsigned long long int)have); |
---|
| 842 | } |
---|
| 843 | |
---|
| 844 | ROAR_DBG("roar_buffer_ring_avail(buf=%p, readlen=%p, writelen=%p) = 0", buf, readlen, writelen); |
---|
| 845 | |
---|
| 846 | return 0; |
---|
| 847 | } |
---|
| 848 | |
---|
[4629] | 849 | int roar_buffer_ring_reset(struct roar_buffer * buf) { |
---|
[4905] | 850 | _ckbuf(0) |
---|
[4629] | 851 | |
---|
[4905] | 852 | if ( !(buf->flags & ROAR_BUFFER_FLAG_RING) ) { |
---|
| 853 | roar_err_set(ROAR_ERROR_TYPEMM); |
---|
[4629] | 854 | return -1; |
---|
[4905] | 855 | } |
---|
[4629] | 856 | |
---|
| 857 | buf->meta.ring.read_pos = buf->meta.ring.write_pos = 0; |
---|
| 858 | |
---|
| 859 | return 0; |
---|
| 860 | } |
---|
| 861 | |
---|
[0] | 862 | //ll |
---|