1 | //driver_oss.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 roarclients 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 <roaraudio.h> |
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26 | #include "driver.h" |
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27 | |
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28 | #if defined(ROAR_HAVE_OSS_BSD) || defined(ROAR_HAVE_OSS) |
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29 | |
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30 | #if defined(__OpenBSD__) || defined(__NetBSD__) |
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31 | #include <soundcard.h> |
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32 | #else |
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33 | #include <sys/soundcard.h> |
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34 | #endif |
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35 | #include <sys/ioctl.h> |
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36 | |
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37 | #define _err() roar_vio_close(calls); return -1 |
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38 | |
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39 | int roar_cdriver_oss(struct roar_vio_calls * calls, char * name, char * dev, struct roar_audio_info * info, int dir) { |
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40 | int fh; |
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41 | int tmp, ctmp; |
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42 | |
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43 | ROAR_DBG("roar_cdriver_oss(*) = ?"); |
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44 | |
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45 | #ifdef ROAR_DEFAULT_OSS_DEV |
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46 | if ( dev == NULL ) |
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47 | dev = ROAR_DEFAULT_OSS_DEV; |
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48 | #endif |
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49 | |
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50 | if ( dev == NULL ) |
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51 | return -1; |
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52 | |
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53 | ROAR_DBG("roar_cdriver_oss(*) = ?"); |
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54 | |
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55 | switch (dir) { |
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56 | case ROAR_DIR_PLAY: |
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57 | case ROAR_DIR_MONITOR: |
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58 | case ROAR_DIR_OUTPUT: |
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59 | tmp = O_WRONLY; |
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60 | break; |
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61 | case ROAR_DIR_BIDIR: |
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62 | tmp = O_RDWR; |
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63 | break; |
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64 | case ROAR_DIR_RECORD: |
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65 | tmp = O_RDONLY; |
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66 | default: |
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67 | return -1; |
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68 | } |
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69 | |
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70 | if ( roar_vio_open_file(calls, dev, tmp, 0644) == -1 ) |
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71 | return -1; |
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72 | |
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73 | if ( roar_vio_ctl(calls, ROAR_VIO_CTL_GET_FH, &fh) == -1 ) { |
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74 | _err(); |
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75 | } |
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76 | |
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77 | // channels: |
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78 | #ifdef SNDCTL_DSP_CHANNELS |
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79 | tmp = info->channels; |
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80 | |
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81 | if ( ioctl(fh, SNDCTL_DSP_CHANNELS, &tmp) == -1 ) { |
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82 | _err(); |
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83 | } |
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84 | |
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85 | if ( tmp != info->channels ) { |
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86 | _err(); |
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87 | } |
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88 | #else |
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89 | switch (info->channels) { |
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90 | case 1: tmp = 0; break; |
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91 | case 2: tmp = 1; break; |
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92 | default: _err(); |
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93 | } |
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94 | |
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95 | if ( ioctl(fh, SNDCTL_DSP_STEREO, &tmp) == -1 ) { |
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96 | _err(); |
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97 | } |
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98 | #endif |
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99 | |
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100 | // codec/bits: |
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101 | if ( info->codec != ROAR_CODEC_ALAW && info->codec != ROAR_CODEC_MULAW && info->bits != 16 ) { |
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102 | // other modes are currently not supported |
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103 | _err(); |
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104 | } |
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105 | |
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106 | switch (info->codec) { |
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107 | case ROAR_CODEC_PCM_S_LE: |
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108 | tmp = AFMT_S16_LE; |
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109 | break; |
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110 | case ROAR_CODEC_PCM_S_BE: |
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111 | tmp = AFMT_S16_BE; |
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112 | break; |
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113 | case ROAR_CODEC_PCM_U_LE: |
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114 | tmp = AFMT_U16_LE; |
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115 | break; |
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116 | case ROAR_CODEC_PCM_U_BE: |
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117 | tmp = AFMT_U16_BE; |
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118 | break; |
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119 | case ROAR_CODEC_ALAW: |
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120 | tmp = AFMT_A_LAW; |
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121 | break; |
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122 | case ROAR_CODEC_MULAW: |
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123 | tmp = AFMT_MU_LAW; |
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124 | break; |
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125 | default: |
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126 | _err(); |
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127 | } |
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128 | |
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129 | ctmp = tmp; |
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130 | #ifdef SNDCTL_DSP_SETFMT |
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131 | if ( ioctl(fh, SNDCTL_DSP_SETFMT, &tmp) == -1 ) { |
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132 | #else |
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133 | if ( ioctl(fh, SNDCTL_DSP_SAMPLESIZE, &tmp) == -1 ) { |
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134 | #endif |
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135 | _err(); |
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136 | } |
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137 | |
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138 | if ( tmp != ctmp ) { |
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139 | _err(); |
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140 | } |
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141 | |
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142 | // rate: |
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143 | tmp = info->rate; |
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144 | |
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145 | if ( ioctl(fh, SNDCTL_DSP_SPEED, &tmp) == -1 ) { |
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146 | _err(); |
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147 | } |
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148 | |
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149 | if ( tmp != info->rate ) { |
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150 | _err(); |
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151 | } |
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152 | |
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153 | return 0; |
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154 | } |
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155 | |
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156 | #endif |
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157 | |
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158 | //ll |
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