[2661] | 1 | //container_framework.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
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| 5 | * |
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| 6 | * This file is part of roard 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 | * RoarAudio 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 | */ |
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| 24 | |
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| 25 | #include "roard.h" |
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| 26 | |
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| 27 | #define _DECL() struct cont_fw_child_vio_inst * inst |
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| 28 | #define _CHECK() if ( vio == NULL ) \ |
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| 29 | return -1 |
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| 30 | #define _CINST() if ( (inst = vio->inst) == NULL ) \ |
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| 31 | return -1 |
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| 32 | #define _PREP() _CHECK(); \ |
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| 33 | _CINST() |
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| 34 | #define _BASIC() _DECL(); \ |
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| 35 | _PREP() |
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| 36 | |
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[2665] | 37 | // Parent: |
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[2663] | 38 | int cont_fw_new (struct cont_fw_parent_inst ** inst) { |
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[2664] | 39 | struct cont_fw_parent_inst * self; |
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| 40 | |
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| 41 | if ( inst == NULL ) |
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| 42 | return -1; |
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| 43 | |
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| 44 | if ( (self = malloc(sizeof(struct cont_fw_parent_inst))) == NULL ) { |
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| 45 | *inst = NULL; |
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| 46 | return -1; |
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| 47 | } |
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| 48 | |
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| 49 | memset(self, 0, sizeof(struct cont_fw_parent_inst)); |
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| 50 | |
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| 51 | *inst = self; |
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| 52 | return 0; |
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[2663] | 53 | } |
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| 54 | |
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| 55 | int cont_fw_delete (struct cont_fw_parent_inst * inst) { |
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[2664] | 56 | int i; |
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| 57 | |
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| 58 | if ( inst == NULL ) |
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| 59 | return -1; |
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| 60 | |
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| 61 | // check if there are streams to close... |
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| 62 | for (i = 0; i < CONT_FW_MAX_CHILDS; i++) { |
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| 63 | if ( inst->child[i] != NULL ) { |
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| 64 | return -1; |
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| 65 | } |
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| 66 | } |
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| 67 | |
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[2670] | 68 | if ( inst->pcb.close != NULL ) |
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| 69 | inst->pcb.close(inst); |
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| 70 | |
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[2664] | 71 | free(inst); |
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| 72 | |
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| 73 | return 0; |
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[2663] | 74 | } |
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| 75 | |
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[2665] | 76 | int cont_fw_set_uinst(struct cont_fw_parent_inst * inst, void * u_inst) { |
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| 77 | if ( inst == NULL ) |
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| 78 | return -1; |
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| 79 | |
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| 80 | inst->u_inst = u_inst; |
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| 81 | |
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| 82 | return 0; |
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| 83 | } |
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| 84 | |
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| 85 | int cont_fw_get_uinst(struct cont_fw_parent_inst * inst, void ** u_inst) { |
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| 86 | if ( inst == NULL || u_inst == NULL ) |
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| 87 | return -1; |
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| 88 | |
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| 89 | *u_inst = inst->u_inst; |
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| 90 | |
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| 91 | return 0; |
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| 92 | } |
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| 93 | |
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| 94 | // VIOs: |
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[2668] | 95 | int cont_fw_new_child(struct cont_fw_parent_inst * inst, int id) { |
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[2672] | 96 | struct cont_fw_child_vio_inst * self; |
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| 97 | int i; |
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| 98 | int cid = -1; |
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| 99 | |
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| 100 | if ( inst == NULL || id == -1 ) |
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| 101 | return -1; |
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| 102 | |
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| 103 | for (i = 0; i < CONT_FW_MAX_CHILDS; i++) { |
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| 104 | if ( inst->child[i] == NULL ) { |
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| 105 | cid = i; |
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| 106 | break; |
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| 107 | } |
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| 108 | } |
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| 109 | |
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| 110 | if ( cid == -1 ) |
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[2668] | 111 | return -1; |
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| 112 | |
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[2672] | 113 | if ( (self = malloc(sizeof(struct cont_fw_child_vio_inst))) == NULL ) |
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| 114 | return -1; |
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| 115 | |
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| 116 | memset(self, 0, sizeof(struct cont_fw_child_vio_inst)); |
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| 117 | |
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| 118 | self->parent = inst; |
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| 119 | self->child = id; |
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| 120 | self->u_inst = NULL; |
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| 121 | |
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| 122 | inst->child[i] = self; |
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| 123 | |
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| 124 | if ( inst->pcb.new_child != NULL ) { |
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| 125 | if ( inst->pcb.new_child(inst, self) == -1 ) { |
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| 126 | inst->child[i] = NULL; |
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| 127 | free(self); |
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| 128 | return -1; |
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| 129 | } |
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| 130 | } |
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| 131 | |
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| 132 | return 0; |
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[2668] | 133 | } |
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[2665] | 134 | |
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[2662] | 135 | int cont_fw_init_vio(struct roar_vio_calls * vio, void * inst) { |
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| 136 | if ( vio == NULL ) |
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| 137 | return -1; |
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| 138 | |
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| 139 | memset(vio, 0, sizeof(struct roar_vio_calls)); |
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| 140 | vio->inst = inst; |
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| 141 | |
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| 142 | vio->read = cont_fw_read; |
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| 143 | vio->write = cont_fw_write; |
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| 144 | vio->sync = cont_fw_sync; |
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| 145 | vio->close = cont_fw_close; |
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| 146 | |
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| 147 | return 0; |
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| 148 | } |
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| 149 | |
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[2661] | 150 | ssize_t cont_fw_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 151 | _BASIC(); |
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| 152 | |
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[2667] | 153 | if ( inst->parent->ccb.read != NULL ) |
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[2669] | 154 | return inst->parent->ccb.read(inst->parent, inst, buf, count); |
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[2661] | 155 | |
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| 156 | return -1; |
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| 157 | } |
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| 158 | |
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| 159 | ssize_t cont_fw_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 160 | _BASIC(); |
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| 161 | |
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[2667] | 162 | if ( inst->parent->ccb.write != NULL ) |
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[2669] | 163 | return inst->parent->ccb.write(inst->parent, inst, buf, count); |
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[2661] | 164 | |
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| 165 | return -1; |
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| 166 | } |
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| 167 | |
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| 168 | off_t cont_fw_lseek (struct roar_vio_calls * vio, off_t offset, int whence); |
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| 169 | int cont_fw_nonblock(struct roar_vio_calls * vio, int state); |
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| 170 | |
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| 171 | int cont_fw_sync (struct roar_vio_calls * vio) { |
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| 172 | _BASIC(); |
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| 173 | |
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[2667] | 174 | if ( inst->parent->ccb.flush != NULL ) |
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[2669] | 175 | return inst->parent->ccb.flush(inst->parent, inst); |
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[2661] | 176 | |
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| 177 | return 0; |
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| 178 | } |
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| 179 | |
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| 180 | int cont_fw_close (struct roar_vio_calls * vio) { |
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| 181 | _DECL(); |
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| 182 | int r = 0; |
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[2671] | 183 | int i; |
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[2661] | 184 | |
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| 185 | _PREP(); |
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| 186 | |
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| 187 | if ( cont_fw_sync(vio) == -1 ) |
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| 188 | r = -1; |
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| 189 | |
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[2667] | 190 | if ( inst->parent->ccb.close != NULL ) |
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[2669] | 191 | return inst->parent->ccb.close(inst->parent, inst); |
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[2667] | 192 | |
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[2671] | 193 | for (i = 0; i < CONT_FW_MAX_CHILDS; i++) { |
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| 194 | if ( inst->parent->child[i] == inst ) { |
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| 195 | inst->parent->child[i] = NULL; |
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| 196 | } |
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| 197 | } |
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| 198 | |
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| 199 | free(inst); |
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| 200 | |
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[2661] | 201 | return r; |
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| 202 | } |
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| 203 | |
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| 204 | int cont_fw_ctl (struct roar_vio_calls * vio, int cmd, void * data); |
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| 205 | |
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| 206 | //ll |
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