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 #include "alMain.h"
  34 #include "AL/al.h"
  35 #include "AL/alc.h"
  36
  37 #include <sys/audioio.h>
  38
  39
  40 static const ALCchar solaris_device[] = "Solaris Default";
  41
  42 typedef struct {
  43     int fd;
  44     volatile int killNow;
  45     ALvoid *thread;
  46
  47     ALubyte *mix_data;
  48     int data_size;
  49 } solaris_data;
  50
  51
  52 static ALuint SolarisProc(ALvoid *ptr)
  53 {
  54     ALCdevice *pDevice = (ALCdevice*)ptr;
  55     solaris_data *data = (solaris_data*)pDevice->ExtraData;
  56     ALint frameSize;
  57     int wrote;
  58
  59     SetRTPriority();
  60
  61     frameSize = FrameSizeFromDevFmt(pDevice->FmtChans, pDevice->FmtType);
  62
  63     while(!data->killNow && pDevice->Connected)
  64     {
  65         ALint len = data->data_size;
  66         ALubyte *WritePtr = data->mix_data;
  67
  68         aluMixData(pDevice, WritePtr, len/frameSize);
  69         while(len > 0 && !data->killNow)
  70         {
  71             wrote = write(data->fd, WritePtr, len);
  72             if(wrote < 0)
  73             {
  74                 if(errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR)
  75                 {
  76                     ERR("write failed: %s\n", strerror(errno));
  77                     aluHandleDisconnect(pDevice);
  78                     break;
  79                 }
  80
  81                 Sleep(1);
  82                 continue;
  83             }
  84
  85             len -= wrote;
  86             WritePtr += wrote;
  87         }
  88     }
  89
  90     return 0;
  91 }
  92
  93
  94 static ALCenum solaris_open_playback(ALCdevice *device, const ALCchar *deviceName)
  95 {
  96     char driver[64];
  97     solaris_data *data;
  98
  99     strncpy(driver, GetConfigValue("solaris", "device", "/dev/audio"), sizeof(driver)-1);
 100     driver[sizeof(driver)-1] = 0;
 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(driver, O_WRONLY);
 111     if(data->fd == -1)
 112     {
 113         free(data);
 114         ERR("Could not open %s: %s\n", driver, strerror(errno));
 115         return ALC_INVALID_VALUE;
 116     }
 117
 118     device->szDeviceName = 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_LINEAR &&
 186           device->FmtType == DevFmtByte) ||
 187          (info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR8 &&
 188           device->FmtType == DevFmtUByte) ||
 189          (info.play.precision == 16 && info.play.encoding == AUDIO_ENCODING_LINEAR &&
 190           device->FmtType == DevFmtShort) ||
 191          (info.play.precision == 32 && info.play.encoding == AUDIO_ENCODING_LINEAR &&
 192           device->FmtType == DevFmtInt)))
 193     {
 194         ERR("Could not set %#x sample type, got %d (%#x)\n",
 195             device->FmtType, 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     data->data_size = device->UpdateSize * frameSize;
 203     data->mix_data = calloc(1, data->data_size);
 204
 205     SetDefaultChannelOrder(device);
 206
 207     data->thread = StartThread(SolarisProc, device);
 208     if(data->thread == NULL)
 209     {
 210         free(data->mix_data);
 211         data->mix_data = NULL;
 212         return ALC_FALSE;
 213     }
 214
 215     return ALC_TRUE;
 216 }
 217
 218 static void solaris_stop_playback(ALCdevice *device)
 219 {
 220     solaris_data *data = (solaris_data*)device->ExtraData;
 221
 222     if(!data->thread)
 223         return;
 224
 225     data->killNow = 1;
 226     StopThread(data->thread);
 227     data->thread = NULL;
 228
 229     data->killNow = 0;
 230     if(ioctl(data->fd, AUDIO_DRAIN) < 0)
 231         ERR("Error draining device: %s\n", strerror(errno));
 232
 233     free(data->mix_data);
 234     data->mix_data = NULL;
 235 }
 236
 237
 238 static const BackendFuncs solaris_funcs = {
 239     solaris_open_playback,
 240     solaris_close_playback,
 241     solaris_reset_playback,
 242     solaris_stop_playback,
 243     NULL,
 244     NULL,
 245     NULL,
 246     NULL,
 247     NULL,
 248     NULL
 249 };
 250
 251 ALCboolean alc_solaris_init(BackendFuncs *func_list)
 252 {
 253     *func_list = solaris_funcs;
 254     return ALC_TRUE;
 255 }
 256
 257 void alc_solaris_deinit(void)
 258 {
 259 }
 260
 261 void alc_solaris_probe(enum DevProbe type)
 262 {
 263 #ifdef HAVE_STAT
 264     struct stat buf;
 265     if(stat(GetConfigValue("solaris", "device", "/dev/audio"), &buf) != 0)
 266         return;
 267 #endif
 268
 269     switch(type)
 270     {
 271         case ALL_DEVICE_PROBE:
 272             AppendAllDeviceList(solaris_device);
 273             break;
 274         case CAPTURE_DEVICE_PROBE:
 275             break;
 276     }
 277 }