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