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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37 | // Parent: |
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38 | int cont_fw_new (struct cont_fw_parent_inst ** inst) { |
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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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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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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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68 | if ( inst->pcb.close != NULL ) |
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69 | inst->pcb.close(inst); |
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70 | |
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71 | free(inst); |
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72 | |
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73 | return 0; |
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74 | } |
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75 | |
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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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95 | int cont_fw_new_child(struct cont_fw_parent_inst * inst, int id) { |
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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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111 | return -1; |
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112 | |
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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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133 | } |
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134 | |
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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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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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153 | if ( inst->parent->ccb.read != NULL ) |
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154 | return inst->parent->ccb.read(inst->parent, inst, buf, count); |
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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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162 | if ( inst->parent->ccb.write != NULL ) |
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163 | return inst->parent->ccb.write(inst->parent, inst, buf, count); |
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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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174 | if ( inst->parent->ccb.flush != NULL ) |
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175 | return inst->parent->ccb.flush(inst->parent, inst); |
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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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183 | int i; |
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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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190 | if ( inst->parent->ccb.close != NULL ) |
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191 | return inst->parent->ccb.close(inst->parent, inst); |
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192 | |
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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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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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