Alc/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     int remaining = 0;
  57     ALint frameSize;
  58     int wrote;
  59
  60     SetRTPriority();
  61
  62     frameSize = aluFrameSizeFromFormat(pDevice->Format);
  63
  64     while(!data->killNow && pDevice->Connected)
  65     {
  66         ALint len = data->data_size;
  67         ALubyte *WritePtr = data->mix_data;
  68
  69         aluMixData(pDevice, WritePtr, len/frameSize);
  70         while(len > 0 && !data->killNow)
  71         {
  72             wrote = write(data->fd, WritePtr, len);
  73             if(wrote < 0)
  74             {
  75                 if(errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR)
  76                 {
  77                     AL_PRINT("write failed: %s\n", strerror(errno));
  78                     aluHandleDisconnect(pDevice);
  79                     break;
  80                 }
  81
  82                 Sleep(1);
  83                 continue;
  84             }
  85
  86             len -= wrote;
  87             WritePtr += wrote;
  88         }
  89     }
  90
  91     return 0;
  92 }
  93
  94
  95 static ALCboolean solaris_open_playback(ALCdevice *device, const ALCchar *deviceName)
  96 {
  97     char driver[64];
  98     solaris_data *data;
  99
 100     strncpy(driver, GetConfigValue("solaris", "device", "/dev/audio"), sizeof(driver)-1);
 101     driver[sizeof(driver)-1] = 0;
 102
 103     if(!deviceName)
 104         deviceName = solaris_device;
 105     else if(strcmp(deviceName, solaris_device) != 0)
 106         return ALC_FALSE;
 107
 108     data = (solaris_data*)calloc(1, sizeof(solaris_data));
 109     data->killNow = 0;
 110
 111     data->fd = open(driver, O_WRONLY);
 112     if(data->fd == -1)
 113     {
 114         free(data);
 115         AL_PRINT("Could not open %s: %s\n", driver, strerror(errno));
 116         return ALC_FALSE;
 117     }
 118
 119     device->szDeviceName = strdup(deviceName);
 120     device->ExtraData = data;
 121     return ALC_TRUE;
 122 }
 123
 124 static void solaris_close_playback(ALCdevice *device)
 125 {
 126     solaris_data *data = (solaris_data*)device->ExtraData;
 127
 128     close(data->fd);
 129     free(data);
 130     device->ExtraData = NULL;
 131 }
 132
 133 static ALCboolean solaris_reset_playback(ALCdevice *device)
 134 {
 135     solaris_data *data = (solaris_data*)device->ExtraData;
 136     audio_info_t info;
 137     ALuint frameSize;
 138     int numChannels;
 139
 140     AUDIO_INITINFO(&info);
 141
 142     switch(aluBytesFromFormat(device->Format))
 143     {
 144         case 1:
 145             info.play.precision = 8;
 146             info.play.encoding = AUDIO_ENCODING_LINEAR8;
 147             break;
 148         case 4:
 149             switch(numChannels)
 150             {
 151                 case 1: device->Format = AL_FORMAT_MONO16; break;
 152                 case 2: device->Format = AL_FORMAT_STEREO16; break;
 153                 case 4: device->Format = AL_FORMAT_QUAD16; break;
 154                 case 6: device->Format = AL_FORMAT_51CHN16; break;
 155                 case 7: device->Format = AL_FORMAT_61CHN16; break;
 156                 case 8: device->Format = AL_FORMAT_71CHN16; break;
 157             }
 158             /* fall-through */
 159         case 2:
 160             info.play.precision = 16;
 161             info.play.encoding = AUDIO_ENCODING_LINEAR;
 162             break;
 163         default:
 164             AL_PRINT("Unknown format: 0x%x\n", device->Format);
 165             return ALC_FALSE;
 166     }
 167
 168     numChannels = aluChannelsFromFormat(device->Format);
 169     info.play.sample_rate = device->Frequency;
 170     info.play.channels = numChannels;
 171
 172     frameSize = numChannels * aluBytesFromFormat(device->Format);
 173     info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
 174
 175     if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
 176     {
 177         AL_PRINT("ioctl failed: %s\n", strerror(errno));
 178         return ALC_FALSE;
 179     }
 180
 181     if(aluChannelsFromFormat(device->Format) != info.play.channels)
 182     {
 183         AL_PRINT("Could not set %d channels, got %d instead\n", aluChannelsFromFormat(device->Format), info.play.channels);
 184         return ALC_FALSE;
 185     }
 186
 187     if(!((info.play.precision == 8 && aluBytesFromFormat(device->Format) == 1) ||
 188          (info.play.precision == 16 && aluBytesFromFormat(device->Format) == 2)))
 189     {
 190         AL_PRINT("Could not set %d-bit output, got %d\n", aluBytesFromFormat(device->Format)*8, info.play.precision);
 191         return ALC_FALSE;
 192     }
 193
 194     device->Frequency = info.play.sample_rate;
 195     device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
 196
 197     data->data_size = device->UpdateSize * frameSize;
 198     data->mix_data = calloc(1, data->data_size);
 199
 200     SetDefaultChannelOrder(device);
 201
 202     data->thread = StartThread(SolarisProc, device);
 203     if(data->thread == NULL)
 204     {
 205         free(data->mix_data);
 206         data->mix_data = NULL;
 207         return ALC_FALSE;
 208     }
 209
 210     return ALC_TRUE;
 211 }
 212
 213 static void solaris_stop_playback(ALCdevice *device)
 214 {
 215     solaris_data *data = (solaris_data*)device->ExtraData;
 216
 217     if(!data->thread)
 218         return;
 219
 220     data->killNow = 1;
 221     StopThread(data->thread);
 222     data->thread = NULL;
 223
 224     data->killNow = 0;
 225
 226     free(data->mix_data);
 227     data->mix_data = NULL;
 228 }
 229
 230
 231 static ALCboolean solaris_open_capture(ALCdevice *device, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
 232 {
 233     (void)device;
 234     (void)deviceName;
 235     (void)frequency;
 236     (void)format;
 237     (void)SampleSize;
 238     return ALC_FALSE;
 239 }
 240
 241 static void solaris_close_capture(ALCdevice *device)
 242 {
 243     (void)device;
 244 }
 245
 246 static void solaris_start_capture(ALCdevice *pDevice)
 247 {
 248     (void)pDevice;
 249 }
 250
 251 static void solaris_stop_capture(ALCdevice *pDevice)
 252 {
 253     (void)pDevice;
 254 }
 255
 256 static void solaris_capture_samples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples)
 257 {
 258     (void)pDevice;
 259     (void)pBuffer;
 260     (void)lSamples;
 261 }
 262
 263 static ALCuint solaris_available_samples(ALCdevice *pDevice)
 264 {
 265     (void)pDevice;
 266     return 0;
 267 }
 268
 269
 270 BackendFuncs solaris_funcs = {
 271     solaris_open_playback,
 272     solaris_close_playback,
 273     solaris_reset_playback,
 274     solaris_stop_playback,
 275     solaris_open_capture,
 276     solaris_close_capture,
 277     solaris_start_capture,
 278     solaris_stop_capture,
 279     solaris_capture_samples,
 280     solaris_available_samples
 281 };
 282
 283 void alc_solaris_init(BackendFuncs *func_list)
 284 {
 285     *func_list = solaris_funcs;
 286 }
 287
 288 void alc_solaris_deinit(void)
 289 {
 290 }
 291
 292 void alc_solaris_probe(int type)
 293 {
 294 #ifdef HAVE_STAT
 295     struct stat buf;
 296     if(stat(GetConfigValue("solaris", "device", "/dev/audio"), &buf) != 0)
 297         return;
 298 #endif
 299
 300     if(type == DEVICE_PROBE)
 301         AppendDeviceList(solaris_device);
 302     else if(type == ALL_DEVICE_PROBE)
 303         AppendAllDeviceList(solaris_device);
 304 }