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annotate Alc/backends/solaris.c @ 0:f9476ff7637e

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initial forking of open-al to create multiple listeners
author Robert McIntyre <rlm@mit.edu>
date Tue, 25 Oct 2011 13:02:31 -0700
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rlm@0 1 /**
rlm@0 2 * OpenAL cross platform audio library
rlm@0 3 * Copyright (C) 1999-2007 by authors.
rlm@0 4 * This library is free software; you can redistribute it and/or
rlm@0 5 * modify it under the terms of the GNU Library General Public
rlm@0 6 * License as published by the Free Software Foundation; either
rlm@0 7 * version 2 of the License, or (at your option) any later version.
rlm@0 8 *
rlm@0 9 * This library is distributed in the hope that it will be useful,
rlm@0 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
rlm@0 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
rlm@0 12 * Library General Public License for more details.
rlm@0 13 *
rlm@0 14 * You should have received a copy of the GNU Library General Public
rlm@0 15 * License along with this library; if not, write to the
rlm@0 16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
rlm@0 17 * Boston, MA 02111-1307, USA.
rlm@0 18 * Or go to http://www.gnu.org/copyleft/lgpl.html
rlm@0 19 */
rlm@0 20
rlm@0 21 #include "config.h"
rlm@0 22
rlm@0 23 #include <sys/ioctl.h>
rlm@0 24 #include <sys/types.h>
rlm@0 25 #include <sys/stat.h>
rlm@0 26 #include <fcntl.h>
rlm@0 27 #include <stdlib.h>
rlm@0 28 #include <stdio.h>
rlm@0 29 #include <memory.h>
rlm@0 30 #include <unistd.h>
rlm@0 31 #include <errno.h>
rlm@0 32 #include <math.h>
rlm@0 33 #include "alMain.h"
rlm@0 34 #include "AL/al.h"
rlm@0 35 #include "AL/alc.h"
rlm@0 36
rlm@0 37 #include <sys/audioio.h>
rlm@0 38
rlm@0 39
rlm@0 40 static const ALCchar solaris_device[] = "Solaris Default";
rlm@0 41
rlm@0 42 typedef struct {
rlm@0 43 int fd;
rlm@0 44 volatile int killNow;
rlm@0 45 ALvoid *thread;
rlm@0 46
rlm@0 47 ALubyte *mix_data;
rlm@0 48 int data_size;
rlm@0 49 } solaris_data;
rlm@0 50
rlm@0 51
rlm@0 52 static ALuint SolarisProc(ALvoid *ptr)
rlm@0 53 {
rlm@0 54 ALCdevice *pDevice = (ALCdevice*)ptr;
rlm@0 55 solaris_data *data = (solaris_data*)pDevice->ExtraData;
rlm@0 56 ALint frameSize;
rlm@0 57 int wrote;
rlm@0 58
rlm@0 59 SetRTPriority();
rlm@0 60
rlm@0 61 frameSize = FrameSizeFromDevFmt(pDevice->FmtChans, pDevice->FmtType);
rlm@0 62
rlm@0 63 while(!data->killNow && pDevice->Connected)
rlm@0 64 {
rlm@0 65 ALint len = data->data_size;
rlm@0 66 ALubyte *WritePtr = data->mix_data;
rlm@0 67
rlm@0 68 aluMixData(pDevice, WritePtr, len/frameSize);
rlm@0 69 while(len > 0 && !data->killNow)
rlm@0 70 {
rlm@0 71 wrote = write(data->fd, WritePtr, len);
rlm@0 72 if(wrote < 0)
rlm@0 73 {
rlm@0 74 if(errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR)
rlm@0 75 {
rlm@0 76 ERR("write failed: %s\n", strerror(errno));
rlm@0 77 aluHandleDisconnect(pDevice);
rlm@0 78 break;
rlm@0 79 }
rlm@0 80
rlm@0 81 Sleep(1);
rlm@0 82 continue;
rlm@0 83 }
rlm@0 84
rlm@0 85 len -= wrote;
rlm@0 86 WritePtr += wrote;
rlm@0 87 }
rlm@0 88 }
rlm@0 89
rlm@0 90 return 0;
rlm@0 91 }
rlm@0 92
rlm@0 93
rlm@0 94 static ALCboolean solaris_open_playback(ALCdevice *device, const ALCchar *deviceName)
rlm@0 95 {
rlm@0 96 char driver[64];
rlm@0 97 solaris_data *data;
rlm@0 98
rlm@0 99 strncpy(driver, GetConfigValue("solaris", "device", "/dev/audio"), sizeof(driver)-1);
rlm@0 100 driver[sizeof(driver)-1] = 0;
rlm@0 101
rlm@0 102 if(!deviceName)
rlm@0 103 deviceName = solaris_device;
rlm@0 104 else if(strcmp(deviceName, solaris_device) != 0)
rlm@0 105 return ALC_FALSE;
rlm@0 106
rlm@0 107 data = (solaris_data*)calloc(1, sizeof(solaris_data));
rlm@0 108 data->killNow = 0;
rlm@0 109
rlm@0 110 data->fd = open(driver, O_WRONLY);
rlm@0 111 if(data->fd == -1)
rlm@0 112 {
rlm@0 113 free(data);
rlm@0 114 ERR("Could not open %s: %s\n", driver, strerror(errno));
rlm@0 115 return ALC_FALSE;
rlm@0 116 }
rlm@0 117
rlm@0 118 device->szDeviceName = strdup(deviceName);
rlm@0 119 device->ExtraData = data;
rlm@0 120 return ALC_TRUE;
rlm@0 121 }
rlm@0 122
rlm@0 123 static void solaris_close_playback(ALCdevice *device)
rlm@0 124 {
rlm@0 125 solaris_data *data = (solaris_data*)device->ExtraData;
rlm@0 126
rlm@0 127 close(data->fd);
rlm@0 128 free(data);
rlm@0 129 device->ExtraData = NULL;
rlm@0 130 }
rlm@0 131
rlm@0 132 static ALCboolean solaris_reset_playback(ALCdevice *device)
rlm@0 133 {
rlm@0 134 solaris_data *data = (solaris_data*)device->ExtraData;
rlm@0 135 audio_info_t info;
rlm@0 136 ALuint frameSize;
rlm@0 137 int numChannels;
rlm@0 138
rlm@0 139 AUDIO_INITINFO(&info);
rlm@0 140
rlm@0 141 info.play.sample_rate = device->Frequency;
rlm@0 142
rlm@0 143 if(device->FmtChans != DevFmtMono)
rlm@0 144 device->FmtChans = DevFmtStereo;
rlm@0 145 numChannels = ChannelsFromDevFmt(device->FmtChans);
rlm@0 146 info.play.channels = numChannels;
rlm@0 147
rlm@0 148 switch(device->FmtType)
rlm@0 149 {
rlm@0 150 case DevFmtByte:
rlm@0 151 info.play.precision = 8;
rlm@0 152 info.play.encoding = AUDIO_ENCODING_LINEAR;
rlm@0 153 break;
rlm@0 154 case DevFmtUByte:
rlm@0 155 info.play.precision = 8;
rlm@0 156 info.play.encoding = AUDIO_ENCODING_LINEAR8;
rlm@0 157 break;
rlm@0 158 case DevFmtUShort:
rlm@0 159 case DevFmtFloat:
rlm@0 160 device->FmtType = DevFmtShort;
rlm@0 161 /* fall-through */
rlm@0 162 case DevFmtShort:
rlm@0 163 info.play.precision = 16;
rlm@0 164 info.play.encoding = AUDIO_ENCODING_LINEAR;
rlm@0 165 break;
rlm@0 166 }
rlm@0 167
rlm@0 168 frameSize = numChannels * BytesFromDevFmt(device->FmtType);
rlm@0 169 info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
rlm@0 170
rlm@0 171 if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
rlm@0 172 {
rlm@0 173 ERR("ioctl failed: %s\n", strerror(errno));
rlm@0 174 return ALC_FALSE;
rlm@0 175 }
rlm@0 176
rlm@0 177 if(ChannelsFromDevFmt(device->FmtChans) != info.play.channels)
rlm@0 178 {
rlm@0 179 ERR("Could not set %d channels, got %d instead\n", ChannelsFromDevFmt(device->FmtChans), info.play.channels);
rlm@0 180 return ALC_FALSE;
rlm@0 181 }
rlm@0 182
rlm@0 183 if(!((info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR &&
rlm@0 184 device->FmtType == DevFmtByte) ||
rlm@0 185 (info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR8 &&
rlm@0 186 device->FmtType == DevFmtUByte) ||
rlm@0 187 (info.play.precision == 16 && info.play.encoding == AUDIO_ENCODING_LINEAR &&
rlm@0 188 device->FmtType == DevFmtShort)))
rlm@0 189 {
rlm@0 190 ERR("Could not set %#x sample type, got %d (%#x)\n",
rlm@0 191 device->FmtType, info.play.precision, info.play.encoding);
rlm@0 192 return ALC_FALSE;
rlm@0 193 }
rlm@0 194
rlm@0 195 if(device->Frequency != info.play.sample_rate)
rlm@0 196 {
rlm@0 197 if((device->Flags&DEVICE_FREQUENCY_REQUEST))
rlm@0 198 ERR("Failed to set requested frequency %dhz, got %dhz instead\n", device->Frequency, info.play.sample_rate);
rlm@0 199 device->Flags &= ~DEVICE_FREQUENCY_REQUEST;
rlm@0 200 device->Frequency = info.play.sample_rate;
rlm@0 201 }
rlm@0 202 device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
rlm@0 203
rlm@0 204 data->data_size = device->UpdateSize * frameSize;
rlm@0 205 data->mix_data = calloc(1, data->data_size);
rlm@0 206
rlm@0 207 SetDefaultChannelOrder(device);
rlm@0 208
rlm@0 209 data->thread = StartThread(SolarisProc, device);
rlm@0 210 if(data->thread == NULL)
rlm@0 211 {
rlm@0 212 free(data->mix_data);
rlm@0 213 data->mix_data = NULL;
rlm@0 214 return ALC_FALSE;
rlm@0 215 }
rlm@0 216
rlm@0 217 return ALC_TRUE;
rlm@0 218 }
rlm@0 219
rlm@0 220 static void solaris_stop_playback(ALCdevice *device)
rlm@0 221 {
rlm@0 222 solaris_data *data = (solaris_data*)device->ExtraData;
rlm@0 223
rlm@0 224 if(!data->thread)
rlm@0 225 return;
rlm@0 226
rlm@0 227 data->killNow = 1;
rlm@0 228 StopThread(data->thread);
rlm@0 229 data->thread = NULL;
rlm@0 230
rlm@0 231 data->killNow = 0;
rlm@0 232 if(ioctl(data->fd, AUDIO_DRAIN) < 0)
rlm@0 233 ERR("Error draining device: %s\n", strerror(errno));
rlm@0 234
rlm@0 235 free(data->mix_data);
rlm@0 236 data->mix_data = NULL;
rlm@0 237 }
rlm@0 238
rlm@0 239
rlm@0 240 static const BackendFuncs solaris_funcs = {
rlm@0 241 solaris_open_playback,
rlm@0 242 solaris_close_playback,
rlm@0 243 solaris_reset_playback,
rlm@0 244 solaris_stop_playback,
rlm@0 245 NULL,
rlm@0 246 NULL,
rlm@0 247 NULL,
rlm@0 248 NULL,
rlm@0 249 NULL,
rlm@0 250 NULL
rlm@0 251 };
rlm@0 252
rlm@0 253 ALCboolean alc_solaris_init(BackendFuncs *func_list)
rlm@0 254 {
rlm@0 255 *func_list = solaris_funcs;
rlm@0 256 return ALC_TRUE;
rlm@0 257 }
rlm@0 258
rlm@0 259 void alc_solaris_deinit(void)
rlm@0 260 {
rlm@0 261 }
rlm@0 262
rlm@0 263 void alc_solaris_probe(enum DevProbe type)
rlm@0 264 {
rlm@0 265 #ifdef HAVE_STAT
rlm@0 266 struct stat buf;
rlm@0 267 if(stat(GetConfigValue("solaris", "device", "/dev/audio"), &buf) != 0)
rlm@0 268 return;
rlm@0 269 #endif
rlm@0 270
rlm@0 271 switch(type)
rlm@0 272 {
rlm@0 273 case DEVICE_PROBE:
rlm@0 274 AppendDeviceList(solaris_device);
rlm@0 275 break;
rlm@0 276 case ALL_DEVICE_PROBE:
rlm@0 277 AppendAllDeviceList(solaris_device);
rlm@0 278 break;
rlm@0 279 case CAPTURE_DEVICE_PROBE:
rlm@0 280 break;
rlm@0 281 }
rlm@0 282 }