1 | //driver_portaudio.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2010 |
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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, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | */ |
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25 | |
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26 | #include "roard.h" |
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27 | |
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28 | #ifdef _DRIVER_PORTAUDIO_CAN_OPERATE |
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29 | |
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30 | int driver_portaudio_open(struct roar_vio_calls * inst, char * device, struct roar_audio_info * info, int fh, struct roar_stream_server * sstream) { |
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31 | struct driver_portaudio * self; |
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32 | PaSampleFormat fmt; |
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33 | #ifdef ROAR_HAVE_LIBPABLIO |
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34 | long flags = PABLIO_WRITE; |
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35 | #endif |
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36 | |
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37 | switch (info->bits) { |
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38 | case 8: |
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39 | switch (info->codec) { |
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40 | case ROAR_CODEC_PCM_S_LE: |
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41 | case ROAR_CODEC_PCM_S_BE: |
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42 | case ROAR_CODEC_PCM_S_PDP: |
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43 | fmt = paInt8; |
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44 | break; |
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45 | case ROAR_CODEC_PCM_U_LE: |
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46 | case ROAR_CODEC_PCM_U_BE: |
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47 | case ROAR_CODEC_PCM_U_PDP: |
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48 | fmt = paUInt8; |
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49 | break; |
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50 | default: |
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51 | return -1; |
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52 | break; |
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53 | } |
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54 | break; |
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55 | case 16: |
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56 | if ( info->codec != ROAR_CODEC_DEFAULT ) |
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57 | return -1; |
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58 | fmt = paInt16; |
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59 | break; |
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60 | case 24: |
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61 | if ( info->codec != ROAR_CODEC_DEFAULT ) |
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62 | return -1; |
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63 | fmt = paPackedInt24; |
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64 | break; |
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65 | case 32: |
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66 | if ( info->codec != ROAR_CODEC_DEFAULT ) |
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67 | return -1; |
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68 | fmt = paInt32; |
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69 | break; |
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70 | default: |
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71 | return -1; |
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72 | } |
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73 | |
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74 | if ( (self = roar_mm_malloc(sizeof(struct driver_portaudio))) == NULL ) |
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75 | return -1; |
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76 | |
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77 | memset(self, 0, sizeof(struct driver_portaudio)); |
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78 | |
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79 | memset(inst, 0, sizeof(struct roar_vio_calls)); |
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80 | |
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81 | inst->inst = self; |
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82 | inst->close = driver_portaudio_close; |
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83 | inst->write = driver_portaudio_write; |
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84 | |
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85 | Pa_Initialize(); |
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86 | |
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87 | #ifdef ROAR_HAVE_LIBPABLIO |
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88 | switch (info->channels) { |
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89 | case 1: flags |= PABLIO_MONO; break; |
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90 | case 2: flags |= PABLIO_STEREO; break; |
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91 | default: |
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92 | roar_mm_free(self); |
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93 | Pa_Terminate(); |
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94 | return -1; |
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95 | } |
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96 | |
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97 | if ( OpenAudioStream(&(self->ostream), info->rate, fmt, flags) != paNoError ) { |
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98 | roar_mm_free(self); |
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99 | Pa_Terminate(); |
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100 | return -1; |
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101 | } |
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102 | |
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103 | return 0; |
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104 | #else |
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105 | return -1; |
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106 | #endif |
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107 | } |
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108 | |
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109 | int driver_portaudio_close (struct roar_vio_calls * vio) { |
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110 | struct driver_portaudio * self = vio->inst; |
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111 | |
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112 | #ifdef ROAR_HAVE_LIBPABLIO |
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113 | CloseAudioStream(self->ostream); |
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114 | |
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115 | Pa_Terminate(); |
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116 | |
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117 | roar_mm_free(self); |
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118 | |
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119 | return 0; |
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120 | #else |
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121 | return -1; |
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122 | #endif |
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123 | } |
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124 | |
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125 | ssize_t driver_portaudio_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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126 | struct driver_portaudio * self = vio->inst; |
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127 | |
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128 | ROAR_DBG("driver_portaudio_write(vio=%p, buf=%p, count=%llu) = ?", vio, buf, (long long unsigned int)count); |
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129 | |
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130 | #ifdef ROAR_HAVE_LIBPABLIO |
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131 | count /= self->ostream->bytesPerFrame; // TODO: FIXME: do not access private members |
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132 | ROAR_DBG("driver_portaudio_write(vio=%p, buf=%p, count=%llu) = ? // PABLIO mode", vio, buf, (long long unsigned int)count); |
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133 | return WriteAudioStream(self->ostream, buf, count) * self->ostream->bytesPerFrame; |
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134 | #else |
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135 | return -1; |
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136 | #endif |
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137 | } |
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138 | |
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139 | #endif |
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140 | |
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141 | //ll |
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