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 | struct roar_stream_server * ss; |
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98 | int i; |
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99 | int cid = -1; |
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100 | |
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101 | if ( inst == NULL || id == -1 ) |
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102 | return -1; |
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103 | |
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104 | if ( streams_get(id, &ss) == -1 ) |
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105 | return -1; |
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106 | |
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107 | for (i = 0; i < CONT_FW_MAX_CHILDS; i++) { |
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108 | if ( inst->child[i] == NULL ) { |
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109 | cid = i; |
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110 | break; |
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111 | } |
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112 | } |
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113 | |
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114 | if ( cid == -1 ) |
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115 | return -1; |
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116 | |
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117 | if ( (self = malloc(sizeof(struct cont_fw_child_vio_inst))) == NULL ) |
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118 | return -1; |
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119 | |
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120 | memset(self, 0, sizeof(struct cont_fw_child_vio_inst)); |
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121 | |
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122 | self->parent = inst; |
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123 | self->child = id; |
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124 | self->u_inst = NULL; |
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125 | |
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126 | inst->child[i] = self; |
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127 | |
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128 | if ( inst->pcb.new_child != NULL ) { |
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129 | if ( inst->pcb.new_child(inst, self) == -1 ) { |
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130 | inst->child[i] = NULL; |
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131 | free(self); |
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132 | return -1; |
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133 | } |
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134 | } |
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135 | |
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136 | // no error possible here. |
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137 | cont_fw_init_vio(&(ss->vio), self); |
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138 | |
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139 | streams_set_fh(id, -1); // update some internal structures |
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140 | |
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141 | return 0; |
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142 | } |
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143 | |
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144 | int cont_fw_init_vio(struct roar_vio_calls * vio, void * inst) { |
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145 | if ( vio == NULL ) |
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146 | return -1; |
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147 | |
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148 | memset(vio, 0, sizeof(struct roar_vio_calls)); |
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149 | vio->inst = inst; |
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150 | |
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151 | vio->read = cont_fw_read; |
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152 | vio->write = cont_fw_write; |
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153 | vio->sync = cont_fw_sync; |
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154 | vio->close = cont_fw_close; |
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155 | |
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156 | return 0; |
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157 | } |
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158 | |
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159 | ssize_t cont_fw_read (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.read != NULL ) |
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163 | return inst->parent->ccb.read(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 | ssize_t cont_fw_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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169 | _BASIC(); |
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170 | |
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171 | if ( inst->parent->ccb.write != NULL ) |
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172 | return inst->parent->ccb.write(inst->parent, inst, buf, count); |
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173 | |
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174 | return -1; |
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175 | } |
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176 | |
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177 | off_t cont_fw_lseek (struct roar_vio_calls * vio, off_t offset, int whence); |
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178 | int cont_fw_nonblock(struct roar_vio_calls * vio, int state); |
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179 | |
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180 | int cont_fw_sync (struct roar_vio_calls * vio) { |
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181 | _BASIC(); |
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182 | |
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183 | if ( inst->parent->ccb.flush != NULL ) |
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184 | return inst->parent->ccb.flush(inst->parent, inst); |
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185 | |
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186 | return 0; |
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187 | } |
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188 | |
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189 | int cont_fw_close (struct roar_vio_calls * vio) { |
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190 | _DECL(); |
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191 | int r = 0; |
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192 | int i; |
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193 | |
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194 | _PREP(); |
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195 | |
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196 | if ( cont_fw_sync(vio) == -1 ) |
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197 | r = -1; |
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198 | |
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199 | if ( inst->parent->ccb.close != NULL ) |
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200 | return inst->parent->ccb.close(inst->parent, inst); |
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201 | |
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202 | for (i = 0; i < CONT_FW_MAX_CHILDS; i++) { |
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203 | if ( inst->parent->child[i] == inst ) { |
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204 | inst->parent->child[i] = NULL; |
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205 | } |
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206 | } |
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207 | |
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208 | free(inst); |
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209 | |
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210 | return r; |
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211 | } |
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212 | |
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213 | int cont_fw_ctl (struct roar_vio_calls * vio, int cmd, void * data); |
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214 | |
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215 | // CF: |
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216 | int cont_fw_cf_open(CODECFILTER_USERDATA_T * inst, int codec, |
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217 | struct roar_stream_server * info, |
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218 | struct roar_codecfilter * filter); |
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219 | |
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220 | int cont_fw_cf_close(CODECFILTER_USERDATA_T inst) { |
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221 | return cont_fw_delete(inst); |
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222 | } |
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223 | |
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224 | int cont_fw_cf_pause(CODECFILTER_USERDATA_T inst, int newstate); |
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225 | |
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226 | |
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227 | // no direct read or writing... |
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228 | int cont_fw_cf_write(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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229 | return -1; |
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230 | } |
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231 | |
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232 | int cont_fw_cf_read (CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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233 | return -1; |
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234 | } |
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235 | |
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236 | int cont_fw_cf_flush(CODECFILTER_USERDATA_T inst) { |
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237 | struct cont_fw_parent_inst * self = (void*)inst; |
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238 | |
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239 | if ( self->pcb.flush != NULL ) |
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240 | return self->pcb.flush(self); |
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241 | |
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242 | return 0; |
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243 | } |
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244 | |
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245 | int cont_fw_cf_delay(CODECFILTER_USERDATA_T inst, uint_least32_t * delay); |
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246 | |
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247 | int cont_fw_cf_ctl (CODECFILTER_USERDATA_T inst, int cmd, void * data) { |
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248 | struct cont_fw_parent_inst * self = (void*)inst; |
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249 | int_least32_t type = cmd & ROAR_STREAM_CTL_TYPEMASK; |
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250 | |
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251 | cmd -= type; |
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252 | |
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253 | ROAR_DBG("cont_fw_cf_ctl(*): command: cmd=0x%.8x, type=0x%.8x, pcmd=0x%.8x", |
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254 | cmd, type, ROAR_CODECFILTER_CTL2CMD(cmd)); |
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255 | |
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256 | if ( data == NULL && type != ROAR_STREAM_CTL_TYPE_VOID ) |
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257 | return -1; |
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258 | |
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259 | switch (cmd) { |
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260 | case ROAR_CODECFILTER_CTL2CMD(ROAR_CODECFILTER_CTL_VIRTUAL_DELETE): |
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261 | return 0; |
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262 | break; |
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263 | case ROAR_CODECFILTER_CTL2CMD(ROAR_CODECFILTER_CTL_VIRTUAL_NEW): |
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264 | if ( type != ROAR_STREAM_CTL_TYPE_INT ) |
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265 | return -1; |
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266 | |
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267 | return cont_fw_new_child(self, *(int*)data); |
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268 | break; |
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269 | default: |
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270 | ROAR_DBG("cont_fw_cf_ctl(*): Unknown command: cmd=0x%.8x, type=0x%.8x, pcmd=0x%.8x", |
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271 | cmd, type, ROAR_CODECFILTER_CTL2CMD(cmd)); |
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272 | return -1; |
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273 | } |
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274 | |
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275 | return -1; |
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276 | } |
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277 | |
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278 | //ll |
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