1 | //vio_transcode.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 libroardsp 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 | * libroardsp 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 "libroardsp.h" |
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26 | |
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27 | int roar_vio_open_xcode (struct roar_vio_calls * calls, int encoder, struct roar_audio_info * info, |
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28 | struct roar_vio_calls * dst) { |
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29 | struct roar_xcoder * xcoder = malloc(sizeof(struct roar_xcoder)); |
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30 | |
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31 | if ( xcoder == NULL ) |
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32 | return -1; |
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33 | |
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34 | if ( calls == NULL || info == NULL || dst == NULL ) { |
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35 | free(xcoder); |
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36 | return -1; |
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37 | } |
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38 | |
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39 | if ( roar_xcoder_init(xcoder, encoder, info, dst) == -1 ) { |
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40 | free(xcoder); |
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41 | return -1; |
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42 | } |
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43 | |
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44 | memset(calls, 0, sizeof(struct roar_vio_calls)); |
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45 | |
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46 | calls->inst = (void*)xcoder; |
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47 | |
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48 | calls->close = roar_vio_xcode_close; |
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49 | |
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50 | if ( encoder ) { |
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51 | calls->write = roar_vio_xcode_proc; |
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52 | } else { |
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53 | calls->read = roar_vio_xcode_proc; |
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54 | } |
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55 | |
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56 | return 0; |
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57 | } |
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58 | |
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59 | ssize_t roar_vio_xcode_proc (struct roar_vio_calls * vio, void *buf, size_t count) { |
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60 | #ifdef DEBUG |
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61 | int ret; |
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62 | #endif |
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63 | |
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64 | if ( vio == NULL ) |
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65 | return -1; |
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66 | |
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67 | if ( buf == NULL && count != 0 ) |
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68 | return -1; |
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69 | |
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70 | #ifdef DEBUG |
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71 | ret = roar_xcoder_proc(vio->inst, buf, count); |
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72 | |
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73 | ROAR_DBG("roar_vio_xcode_proc(vio=%p, buf=%p, count=%lu): ret=%i", vio, buf, (unsigned long) count, ret); |
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74 | |
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75 | return !ret ? count : -1; |
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76 | #else |
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77 | return !roar_xcoder_proc(vio->inst, buf, count) ? count : -1; |
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78 | #endif |
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79 | } |
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80 | |
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81 | off_t roar_vio_xcode_lseek (struct roar_vio_calls * vio, off_t offset, int whence); |
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82 | int roar_vio_xcode_nonblock(struct roar_vio_calls * vio, int state); |
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83 | int roar_vio_xcode_sync (struct roar_vio_calls * vio); |
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84 | int roar_vio_xcode_ctl (struct roar_vio_calls * vio, int cmd, void * data); |
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85 | |
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86 | int roar_vio_xcode_close (struct roar_vio_calls * vio) { |
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87 | int ret = 0; |
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88 | |
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89 | if ( vio == NULL ) |
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90 | return -1; |
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91 | |
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92 | if ( roar_xcoder_close(vio->inst) == -1 ) |
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93 | ret = -1; |
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94 | |
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95 | if ( vio->inst != NULL ) |
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96 | free(vio->inst); |
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97 | |
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98 | return ret; |
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99 | } |
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100 | |
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101 | int roar_vio_open_bixcode (struct roar_vio_calls * calls, struct roar_audio_info * info, |
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102 | struct roar_vio_calls * dst) { |
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103 | struct roar_bixcoder * bixcoder = malloc(sizeof(struct roar_bixcoder)); |
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104 | |
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105 | if ( bixcoder == NULL ) |
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106 | return -1; |
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107 | |
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108 | if ( calls == NULL || info == NULL || dst == NULL ) { |
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109 | free(bixcoder); |
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110 | return -1; |
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111 | } |
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112 | |
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113 | if ( roar_bixcoder_init(bixcoder, info, dst) == -1 ) { |
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114 | free(bixcoder); |
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115 | return -1; |
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116 | } |
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117 | |
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118 | memset(calls, 0, sizeof(struct roar_vio_calls)); |
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119 | |
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120 | calls->inst = (void*)bixcoder; |
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121 | |
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122 | calls->close = roar_vio_bixcode_close; |
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123 | |
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124 | calls->read = roar_vio_bixcode_read; |
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125 | calls->write = roar_vio_bixcode_write; |
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126 | |
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127 | return 0; |
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128 | } |
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129 | |
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130 | ssize_t roar_vio_bixcode_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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131 | |
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132 | if ( vio == NULL ) |
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133 | return -1; |
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134 | |
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135 | if ( buf == NULL && count != 0 ) |
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136 | return -1; |
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137 | |
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138 | return !roar_bixcoder_read(vio->inst, buf, count) ? count : -1; |
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139 | } |
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140 | |
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141 | ssize_t roar_vio_bixcode_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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142 | |
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143 | if ( vio == NULL ) |
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144 | return -1; |
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145 | |
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146 | if ( buf == NULL && count != 0 ) |
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147 | return -1; |
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148 | |
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149 | return !roar_bixcoder_write(vio->inst, buf, count) ? count : -1; |
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150 | } |
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151 | |
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152 | off_t roar_vio_bixcode_lseek (struct roar_vio_calls * vio, off_t offset, int whence); |
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153 | int roar_vio_bixcode_nonblock(struct roar_vio_calls * vio, int state); |
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154 | int roar_vio_bixcode_sync (struct roar_vio_calls * vio); |
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155 | int roar_vio_bixcode_ctl (struct roar_vio_calls * vio, int cmd, void * data); |
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156 | |
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157 | int roar_vio_bixcode_close (struct roar_vio_calls * vio) { |
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158 | int ret = 0; |
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159 | |
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160 | if ( vio == NULL ) |
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161 | return -1; |
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162 | |
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163 | if ( roar_bixcoder_close(vio->inst) == -1 ) |
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164 | ret = -1; |
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165 | |
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166 | if ( vio->inst != NULL ) |
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167 | free(vio->inst); |
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168 | |
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169 | return ret; |
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170 | } |
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171 | |
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172 | //ll |
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