[3751] | 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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[3869] | 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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[3751] | 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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[3869] | 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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[3751] | 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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[3869] | 153 | // TODO: cleanup common code. |
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| 154 | |
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[3751] | 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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[3869] | 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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[3751] | 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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[3869] | 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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[3751] | 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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