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 - 2008-2011 |
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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 | #elif defined(ROAR_HAVE_LIBPORTAUDIO_V0_19) |
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36 | PaError err; |
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37 | PaStreamParameters params; |
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38 | #endif |
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39 | |
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40 | switch (info->bits) { |
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41 | case 8: |
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42 | switch (info->codec) { |
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43 | case ROAR_CODEC_PCM_S_LE: |
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44 | case ROAR_CODEC_PCM_S_BE: |
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45 | case ROAR_CODEC_PCM_S_PDP: |
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46 | fmt = paInt8; |
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47 | break; |
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48 | case ROAR_CODEC_PCM_U_LE: |
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49 | case ROAR_CODEC_PCM_U_BE: |
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50 | case ROAR_CODEC_PCM_U_PDP: |
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51 | fmt = paUInt8; |
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52 | break; |
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53 | default: |
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54 | return -1; |
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55 | break; |
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56 | } |
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57 | break; |
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58 | case 16: |
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59 | if ( info->codec != ROAR_CODEC_DEFAULT ) |
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60 | return -1; |
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61 | fmt = paInt16; |
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62 | break; |
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63 | case 24: |
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64 | if ( info->codec != ROAR_CODEC_DEFAULT ) |
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65 | return -1; |
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66 | fmt = paPackedInt24; |
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67 | break; |
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68 | case 32: |
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69 | if ( info->codec != ROAR_CODEC_DEFAULT ) |
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70 | return -1; |
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71 | fmt = paInt32; |
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72 | break; |
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73 | default: |
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74 | return -1; |
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75 | } |
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76 | |
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77 | if ( (self = roar_mm_malloc(sizeof(struct driver_portaudio))) == NULL ) |
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78 | return -1; |
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79 | |
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80 | memset(self, 0, sizeof(struct driver_portaudio)); |
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81 | |
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82 | memset(inst, 0, sizeof(struct roar_vio_calls)); |
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83 | |
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84 | inst->inst = self; |
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85 | inst->close = driver_portaudio_close; |
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86 | inst->write = driver_portaudio_write; |
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87 | |
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88 | Pa_Initialize(); |
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89 | |
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90 | #ifdef ROAR_HAVE_LIBPABLIO |
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91 | switch (info->channels) { |
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92 | case 1: flags |= PABLIO_MONO; break; |
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93 | case 2: flags |= PABLIO_STEREO; break; |
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94 | default: |
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95 | roar_mm_free(self); |
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96 | Pa_Terminate(); |
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97 | return -1; |
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98 | } |
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99 | |
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100 | if ( OpenAudioStream(&(self->ostream), info->rate, fmt, flags) != paNoError ) { |
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101 | roar_mm_free(self); |
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102 | Pa_Terminate(); |
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103 | return -1; |
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104 | } |
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105 | |
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106 | return 0; |
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107 | #elif defined(ROAR_HAVE_LIBPORTAUDIO_V0_19) |
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108 | params.device = Pa_GetDefaultOutputDevice(); |
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109 | params.channelCount = info->channels; |
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110 | params.sampleFormat = fmt; |
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111 | params.suggestedLatency = Pa_GetDeviceInfo(params.device)->defaultLowOutputLatency; |
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112 | params.hostApiSpecificStreamInfo = NULL; |
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113 | |
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114 | // TODO: FIXME: use libroar for this. |
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115 | self->framesize = info->bits * info->channels / 8; |
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116 | |
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117 | // Sets up blocking I/O stream. |
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118 | #if 0 |
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119 | err = Pa_OpenStream(&(self->stream), |
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120 | NULL, |
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121 | ¶ms, |
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122 | info->rate, |
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123 | 128 /*FIXME:frames*/, |
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124 | paClipOff, |
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125 | NULL, |
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126 | NULL |
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127 | ); |
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128 | #endif |
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129 | |
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130 | if ( err != paNoError ) { |
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131 | ROAR_ERR("driver_portaudio_open(*): Could not open PortAudio device: \"%s\".", Pa_GetErrorText(err)); |
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132 | roar_mm_free(self); |
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133 | return -1; |
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134 | } |
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135 | |
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136 | err = Pa_StartStream(self->stream); |
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137 | |
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138 | if ( err != paNoError ) { |
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139 | ROAR_ERR("driver_portaudio_open(*): Could not start stream: \"%s\".", Pa_GetErrorText(err)); |
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140 | roar_mm_free(self); |
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141 | return -1; |
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142 | } |
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143 | |
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144 | return 0; |
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145 | #else |
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146 | return -1; |
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147 | #endif |
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148 | } |
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149 | |
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150 | int driver_portaudio_close (struct roar_vio_calls * vio) { |
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151 | struct driver_portaudio * self = vio->inst; |
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152 | |
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153 | // TODO: cleanup common code. |
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154 | |
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155 | #ifdef ROAR_HAVE_LIBPABLIO |
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156 | CloseAudioStream(self->ostream); |
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157 | |
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158 | Pa_Terminate(); |
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159 | |
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160 | roar_mm_free(self); |
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161 | |
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162 | return 0; |
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163 | #elif defined(ROAR_HAVE_LIBPORTAUDIO_V0_19) |
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164 | if ( (self != NULL) && (self->stream != NULL) ) { |
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165 | Pa_StopStream(self->stream); |
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166 | Pa_CloseStream(self->stream); |
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167 | } |
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168 | |
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169 | roar_mm_free(self); |
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170 | |
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171 | Pa_Terminate(); |
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172 | |
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173 | return 0; |
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174 | #else |
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175 | return -1; |
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176 | #endif |
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177 | } |
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178 | |
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179 | ssize_t driver_portaudio_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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180 | struct driver_portaudio * self = vio->inst; |
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181 | |
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182 | ROAR_DBG("driver_portaudio_write(vio=%p, buf=%p, count=%llu) = ?", vio, buf, (long long unsigned int)count); |
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183 | |
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184 | #ifdef ROAR_HAVE_LIBPABLIO |
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185 | count /= self->ostream->bytesPerFrame; // TODO: FIXME: do not access private members |
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186 | ROAR_DBG("driver_portaudio_write(vio=%p, buf=%p, count=%llu) = ? // PABLIO mode", vio, buf, (long long unsigned int)count); |
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187 | return WriteAudioStream(self->ostream, buf, count) * self->ostream->bytesPerFrame; |
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188 | #elif defined(ROAR_HAVE_LIBPORTAUDIO_V0_19) |
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189 | size_t write_frames = count / self->framesize; |
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190 | PaError err; |
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191 | |
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192 | ROAR_DBG("driver_portaudio_write(vio=%p, buf=%p, size=%llu) = ?", vio, buf, (long long unsigned int)size); |
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193 | |
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194 | // I'm not 100% sure if you could write arbitrary number of frames to Pa_WriteStream(), but it seems to be backend dependent. |
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195 | err = Pa_WriteStream(self->stream, buf, write_frames); |
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196 | |
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197 | if ( err < 0 && err != paOutputUnderflowed ) |
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198 | return -1; |
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199 | |
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200 | // PA always seems to write requested size, or it will error out. |
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201 | return count; |
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202 | #else |
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203 | return -1; |
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204 | #endif |
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205 | } |
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206 | |
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207 | #endif |
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208 | |
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209 | //ll |
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