Alc/backends/solaris.c

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 1999-2007 by authors.
   4  * This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  *  License along with this library; if not, write to the
  16  *  Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "config.h"
  22
  23 #include <sys/ioctl.h>
  24 #include <sys/types.h>
  25 #include <sys/stat.h>
  26 #include <fcntl.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <memory.h>
  30 #include <unistd.h>
  31 #include <errno.h>
  32 #include <math.h>
  33
  34 #include "alMain.h"
  35 #include "alu.h"
  36 #include "threads.h"
  37 #include "compat.h"
  38
  39 #include <sys/audioio.h>
  40
  41
  42 static const ALCchar solaris_device[] = "Solaris Default";
  43
  44 static const char *solaris_driver = "/dev/audio";
  45
  46 typedef struct {
  47     int fd;
  48
  49     ALubyte *mix_data;
  50     int data_size;
  51
  52     volatile int killNow;
  53     althrd_t thread;
  54 } solaris_data;
  55
  56
  57 static int SolarisProc(void *ptr)
  58 {
  59     ALCdevice *Device = (ALCdevice*)ptr;
  60     solaris_data *data = (solaris_data*)Device->ExtraData;
  61     ALint frameSize;
  62     int wrote;
  63
  64     SetRTPriority();
  65     althrd_setname(althrd_current(), MIXER_THREAD_NAME);
  66
  67     frameSize = FrameSizeFromDevFmt(Device->FmtChans, Device->FmtType);
  68
  69     while(!data->killNow && Device->Connected)
  70     {
  71         ALint len = data->data_size;
  72         ALubyte *WritePtr = data->mix_data;
  73
  74         aluMixData(Device, WritePtr, len/frameSize);
  75         while(len > 0 && !data->killNow)
  76         {
  77             wrote = write(data->fd, WritePtr, len);
  78             if(wrote < 0)
  79             {
  80                 if(errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR)
  81                 {
  82                     ERR("write failed: %s\n", strerror(errno));
  83                     ALCdevice_Lock(Device);
  84                     aluHandleDisconnect(Device);
  85                     ALCdevice_Unlock(Device);
  86                     break;
  87                 }
  88
  89                 al_nssleep(1000000);
  90                 continue;
  91             }
  92
  93             len -= wrote;
  94             WritePtr += wrote;
  95         }
  96     }
  97
  98     return 0;
  99 }
 100
 101
 102 static ALCenum solaris_open_playback(ALCdevice *device, const ALCchar *deviceName)
 103 {
 104     solaris_data *data;
 105
 106     if(!deviceName)
 107         deviceName = solaris_device;
 108     else if(strcmp(deviceName, solaris_device) != 0)
 109         return ALC_INVALID_VALUE;
 110
 111     data = (solaris_data*)calloc(1, sizeof(solaris_data));
 112     data->killNow = 0;
 113
 114     data->fd = open(solaris_driver, O_WRONLY);
 115     if(data->fd == -1)
 116     {
 117         free(data);
 118         ERR("Could not open %s: %s\n", solaris_driver, strerror(errno));
 119         return ALC_INVALID_VALUE;
 120     }
 121
 122     al_string_copy_cstr(&device->DeviceName, deviceName);
 123     device->ExtraData = data;
 124     return ALC_NO_ERROR;
 125 }
 126
 127 static void solaris_close_playback(ALCdevice *device)
 128 {
 129     solaris_data *data = (solaris_data*)device->ExtraData;
 130
 131     close(data->fd);
 132     free(data);
 133     device->ExtraData = NULL;
 134 }
 135
 136 static ALCboolean solaris_reset_playback(ALCdevice *device)
 137 {
 138     solaris_data *data = (solaris_data*)device->ExtraData;
 139     audio_info_t info;
 140     ALuint frameSize;
 141     int numChannels;
 142
 143     AUDIO_INITINFO(&info);
 144
 145     info.play.sample_rate = device->Frequency;
 146
 147     if(device->FmtChans != DevFmtMono)
 148         device->FmtChans = DevFmtStereo;
 149     numChannels = ChannelsFromDevFmt(device->FmtChans);
 150     info.play.channels = numChannels;
 151
 152     switch(device->FmtType)
 153     {
 154         case DevFmtByte:
 155             info.play.precision = 8;
 156             info.play.encoding = AUDIO_ENCODING_LINEAR;
 157             break;
 158         case DevFmtUByte:
 159             info.play.precision = 8;
 160             info.play.encoding = AUDIO_ENCODING_LINEAR8;
 161             break;
 162         case DevFmtUShort:
 163         case DevFmtInt:
 164         case DevFmtUInt:
 165         case DevFmtFloat:
 166             device->FmtType = DevFmtShort;
 167             /* fall-through */
 168         case DevFmtShort:
 169             info.play.precision = 16;
 170             info.play.encoding = AUDIO_ENCODING_LINEAR;
 171             break;
 172     }
 173
 174     frameSize = numChannels * BytesFromDevFmt(device->FmtType);
 175     info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
 176
 177     if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
 178     {
 179         ERR("ioctl failed: %s\n", strerror(errno));
 180         return ALC_FALSE;
 181     }
 182
 183     if(ChannelsFromDevFmt(device->FmtChans) != info.play.channels)
 184     {
 185         ERR("Could not set %d channels, got %d instead\n", ChannelsFromDevFmt(device->FmtChans), info.play.channels);
 186         return ALC_FALSE;
 187     }
 188
 189     if(!((info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR8 && device->FmtType == DevFmtUByte) ||
 190          (info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtByte) ||
 191          (info.play.precision == 16 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtShort) ||
 192          (info.play.precision == 32 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtInt)))
 193     {
 194         ERR("Could not set %s samples, got %d (0x%x)\n", DevFmtTypeString(device->FmtType),
 195             info.play.precision, info.play.encoding);
 196         return ALC_FALSE;
 197     }
 198
 199     device->Frequency = info.play.sample_rate;
 200     device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
 201
 202     SetDefaultChannelOrder(device);
 203
 204     return ALC_TRUE;
 205 }
 206
 207 static ALCboolean solaris_start_playback(ALCdevice *device)
 208 {
 209     solaris_data *data = (solaris_data*)device->ExtraData;
 210
 211     data->data_size = device->UpdateSize * FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
 212     data->mix_data = calloc(1, data->data_size);
 213
 214     data->killNow = 0;
 215     if(althrd_create(&data->thread, SolarisProc, device) != althrd_success)
 216     {
 217         free(data->mix_data);
 218         data->mix_data = NULL;
 219         return ALC_FALSE;
 220     }
 221
 222     return ALC_TRUE;
 223 }
 224
 225 static void solaris_stop_playback(ALCdevice *device)
 226 {
 227     solaris_data *data = (solaris_data*)device->ExtraData;
 228     int res;
 229
 230     if(data->killNow)
 231         return;
 232
 233     data->killNow = 1;
 234     althrd_join(data->thread, &res);
 235
 236     if(ioctl(data->fd, AUDIO_DRAIN) < 0)
 237         ERR("Error draining device: %s\n", strerror(errno));
 238
 239     free(data->mix_data);
 240     data->mix_data = NULL;
 241 }
 242
 243
 244 static const BackendFuncs solaris_funcs = {
 245     solaris_open_playback,
 246     solaris_close_playback,
 247     solaris_reset_playback,
 248     solaris_start_playback,
 249     solaris_stop_playback,
 250     NULL,
 251     NULL,
 252     NULL,
 253     NULL,
 254     NULL,
 255     NULL,
 256     ALCdevice_GetLatencyDefault
 257 };
 258
 259 ALCboolean alc_solaris_init(BackendFuncs *func_list)
 260 {
 261     ConfigValueStr("solaris", "device", &solaris_driver);
 262
 263     *func_list = solaris_funcs;
 264     return ALC_TRUE;
 265 }
 266
 267 void alc_solaris_deinit(void)
 268 {
 269 }
 270
 271 void alc_solaris_probe(enum DevProbe type)
 272 {
 273     switch(type)
 274     {
 275         case ALL_DEVICE_PROBE:
 276         {
 277 #ifdef HAVE_STAT
 278             struct stat buf;
 279             if(stat(solaris_driver, &buf) == 0)
 280 #endif
 281                 AppendAllDevicesList(solaris_device);
 282         }
 283         break;
 284
 285         case CAPTURE_DEVICE_PROBE:
 286             break;
 287     }
 288 }