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., 59 Temple Place - Suite 330,
  17  *  Boston, MA  02111-1307, 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
  37 #include <sys/audioio.h>
  38
  39
  40 static const ALCchar solaris_device[] = "Solaris Default";
  41
  42 static const char *solaris_driver = "/dev/audio";
  43
  44 typedef struct {
  45     int fd;
  46     volatile int killNow;
  47     ALvoid *thread;
  48
  49     ALubyte *mix_data;
  50     int data_size;
  51 } solaris_data;
  52
  53
  54 static ALuint SolarisProc(ALvoid *ptr)
  55 {
  56     ALCdevice *Device = (ALCdevice*)ptr;
  57     solaris_data *data = (solaris_data*)Device->ExtraData;
  58     ALint frameSize;
  59     int wrote;
  60
  61     SetRTPriority();
  62
  63     frameSize = FrameSizeFromDevFmt(Device->FmtChans, Device->FmtType);
  64
  65     while(!data->killNow && Device->Connected)
  66     {
  67         ALint len = data->data_size;
  68         ALubyte *WritePtr = data->mix_data;
  69
  70         aluMixData(Device, WritePtr, len/frameSize);
  71         while(len > 0 && !data->killNow)
  72         {
  73             wrote = write(data->fd, WritePtr, len);
  74             if(wrote < 0)
  75             {
  76                 if(errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR)
  77                 {
  78                     ERR("write failed: %s\n", strerror(errno));
  79                     ALCdevice_Lock(Device);
  80                     aluHandleDisconnect(Device);
  81                     ALCdevice_Unlock(Device);
  82                     break;
  83                 }
  84
  85                 Sleep(1);
  86                 continue;
  87             }
  88
  89             len -= wrote;
  90             WritePtr += wrote;
  91         }
  92     }
  93
  94     return 0;
  95 }
  96
  97
  98 static ALCenum solaris_open_playback(ALCdevice *device, const ALCchar *deviceName)
  99 {
 100     solaris_data *data;
 101
 102     if(!deviceName)
 103         deviceName = solaris_device;
 104     else if(strcmp(deviceName, solaris_device) != 0)
 105         return ALC_INVALID_VALUE;
 106
 107     data = (solaris_data*)calloc(1, sizeof(solaris_data));
 108     data->killNow = 0;
 109
 110     data->fd = open(solaris_driver, O_WRONLY);
 111     if(data->fd == -1)
 112     {
 113         free(data);
 114         ERR("Could not open %s: %s\n", solaris_driver, strerror(errno));
 115         return ALC_INVALID_VALUE;
 116     }
 117
 118     device->DeviceName = strdup(deviceName);
 119     device->ExtraData = data;
 120     return ALC_NO_ERROR;
 121 }
 122
 123 static void solaris_close_playback(ALCdevice *device)
 124 {
 125     solaris_data *data = (solaris_data*)device->ExtraData;
 126
 127     close(data->fd);
 128     free(data);
 129     device->ExtraData = NULL;
 130 }
 131
 132 static ALCboolean solaris_reset_playback(ALCdevice *device)
 133 {
 134     solaris_data *data = (solaris_data*)device->ExtraData;
 135     audio_info_t info;
 136     ALuint frameSize;
 137     int numChannels;
 138
 139     AUDIO_INITINFO(&info);
 140
 141     info.play.sample_rate = device->Frequency;
 142
 143     if(device->FmtChans != DevFmtMono)
 144         device->FmtChans = DevFmtStereo;
 145     numChannels = ChannelsFromDevFmt(device->FmtChans);
 146     info.play.channels = numChannels;
 147
 148     switch(device->FmtType)
 149     {
 150         case DevFmtByte:
 151             info.play.precision = 8;
 152             info.play.encoding = AUDIO_ENCODING_LINEAR;
 153             break;
 154         case DevFmtUByte:
 155             info.play.precision = 8;
 156             info.play.encoding = AUDIO_ENCODING_LINEAR8;
 157             break;
 158         case DevFmtUShort:
 159         case DevFmtInt:
 160         case DevFmtUInt:
 161         case DevFmtFloat:
 162             device->FmtType = DevFmtShort;
 163             /* fall-through */
 164         case DevFmtShort:
 165             info.play.precision = 16;
 166             info.play.encoding = AUDIO_ENCODING_LINEAR;
 167             break;
 168     }
 169
 170     frameSize = numChannels * BytesFromDevFmt(device->FmtType);
 171     info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
 172
 173     if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
 174     {
 175         ERR("ioctl failed: %s\n", strerror(errno));
 176         return ALC_FALSE;
 177     }
 178
 179     if(ChannelsFromDevFmt(device->FmtChans) != info.play.channels)
 180     {
 181         ERR("Could not set %d channels, got %d instead\n", ChannelsFromDevFmt(device->FmtChans), info.play.channels);
 182         return ALC_FALSE;
 183     }
 184
 185     if(!((info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR8 && device->FmtType == DevFmtUByte) ||
 186          (info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtByte) ||
 187          (info.play.precision == 16 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtShort) ||
 188          (info.play.precision == 32 && info.play.encoding == AUDIO_ENCODING_LINEAR && device->FmtType == DevFmtInt)))
 189     {
 190         ERR("Could not set %s samples, got %d (0x%x)\n", DevFmtTypeString(device->FmtType),
 191             info.play.precision, info.play.encoding);
 192         return ALC_FALSE;
 193     }
 194
 195     device->Frequency = info.play.sample_rate;
 196     device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
 197
 198     SetDefaultChannelOrder(device);
 199
 200     return ALC_TRUE;
 201 }
 202
 203 static ALCboolean solaris_start_playback(ALCdevice *device)
 204 {
 205     solaris_data *data = (solaris_data*)device->ExtraData;
 206
 207     data->data_size = device->UpdateSize * FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
 208     data->mix_data = calloc(1, data->data_size);
 209
 210     data->thread = StartThread(SolarisProc, device);
 211     if(data->thread == NULL)
 212     {
 213         free(data->mix_data);
 214         data->mix_data = NULL;
 215         return ALC_FALSE;
 216     }
 217
 218     return ALC_TRUE;
 219 }
 220
 221 static void solaris_stop_playback(ALCdevice *device)
 222 {
 223     solaris_data *data = (solaris_data*)device->ExtraData;
 224
 225     if(!data->thread)
 226         return;
 227
 228     data->killNow = 1;
 229     StopThread(data->thread);
 230     data->thread = NULL;
 231
 232     data->killNow = 0;
 233     if(ioctl(data->fd, AUDIO_DRAIN) < 0)
 234         ERR("Error draining device: %s\n", strerror(errno));
 235
 236     free(data->mix_data);
 237     data->mix_data = NULL;
 238 }
 239
 240
 241 static const BackendFuncs solaris_funcs = {
 242     solaris_open_playback,
 243     solaris_close_playback,
 244     solaris_reset_playback,
 245     solaris_start_playback,
 246     solaris_stop_playback,
 247     NULL,
 248     NULL,
 249     NULL,
 250     NULL,
 251     NULL,
 252     NULL,
 253     ALCdevice_LockDefault,
 254     ALCdevice_UnlockDefault,
 255     ALCdevice_GetLatencyDefault
 256 };
 257
 258 ALCboolean alc_solaris_init(BackendFuncs *func_list)
 259 {
 260     ConfigValueStr("solaris", "device", &solaris_driver);
 261
 262     *func_list = solaris_funcs;
 263     return ALC_TRUE;
 264 }
 265
 266 void alc_solaris_deinit(void)
 267 {
 268 }
 269
 270 void alc_solaris_probe(enum DevProbe type)
 271 {
 272     switch(type)
 273     {
 274         case ALL_DEVICE_PROBE:
 275         {
 276 #ifdef HAVE_STAT
 277             struct stat buf;
 278             if(stat(solaris_driver, &buf) == 0)
 279 #endif
 280                 AppendAllDevicesList(solaris_device);
 281         }
 282         break;
 283
 284         case CAPTURE_DEVICE_PROBE:
 285             break;
 286     }
 287 }