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     if(!deviceName)
 103         deviceName = solaris_device;
 104     else if(strcmp(deviceName, solaris_device) != 0)
 105         return ALC_FALSE;
 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         AL_PRINT("Could not open %s: %s\n", driver, strerror(errno));
 115         return ALC_FALSE;
 116     }
 117
 118     device->szDeviceName = strdup(deviceName);
 119     device->ExtraData = data;
 120     return ALC_TRUE;
 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     switch(aluBytesFromFormat(device->Format))
 142     {
 143         case 1:
 144             info.play.precision = 8;
 145             info.play.encoding = AUDIO_ENCODING_LINEAR8;
 146             break;
 147         case 4:
 148             switch(numChannels)
 149             {
 150                 case 1: device->Format = AL_FORMAT_MONO16; break;
 151                 case 2: device->Format = AL_FORMAT_STEREO16; break;
 152                 case 4: device->Format = AL_FORMAT_QUAD16; break;
 153                 case 6: device->Format = AL_FORMAT_51CHN16; break;
 154                 case 7: device->Format = AL_FORMAT_61CHN16; break;
 155                 case 8: device->Format = AL_FORMAT_71CHN16; break;
 156             }
 157             /* fall-through */
 158         case 2:
 159             info.play.precision = 16;
 160             info.play.encoding = AUDIO_ENCODING_LINEAR;
 161             break;
 162         default:
 163             AL_PRINT("Unknown format: 0x%x\n", device->Format);
 164             return ALC_FALSE;
 165     }
 166
 167     numChannels = aluChannelsFromFormat(device->Format);
 168     info.play.sample_rate = device->Frequency;
 169     info.play.channels = numChannels;
 170
 171     frameSize = numChannels * aluBytesFromFormat(device->Format);
 172     info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
 173
 174     if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
 175     {
 176         AL_PRINT("ioctl failed: %s\n", strerror(errno));
 177         return ALC_FALSE;
 178     }
 179
 180     if(aluChannelsFromFormat(device->Format) != info.play.channels)
 181     {
 182         AL_PRINT("Could not set %d channels, got %d instead\n", aluChannelsFromFormat(device->Format), info.play.channels);
 183         return ALC_FALSE;
 184     }
 185
 186     if(!((info.play.precision == 8 && aluBytesFromFormat(device->Format) == 1) ||
 187          (info.play.precision == 16 && aluBytesFromFormat(device->Format) == 2)))
 188     {
 189         AL_PRINT("Could not set %d-bit output, got %d\n", aluBytesFromFormat(device->Format)*8, info.play.precision);
 190         return ALC_FALSE;
 191     }
 192
 193     device->Frequency = info.play.sample_rate;
 194     device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
 195     device->TimeRes = (ALuint64)device->UpdateSize * 1000000000 /
 196                       device->Frequency;
 197
 198     data->data_size = device->UpdateSize * frameSize;
 199     data->mix_data = calloc(1, data->data_size);
 200
 201     SetDefaultChannelOrder(device);
 202
 203     data->thread = StartThread(SolarisProc, device);
 204     if(data->thread == NULL)
 205     {
 206         free(data->mix_data);
 207         data->mix_data = NULL;
 208         return ALC_FALSE;
 209     }
 210
 211     return ALC_TRUE;
 212 }
 213
 214 static void solaris_stop_playback(ALCdevice *device)
 215 {
 216     solaris_data *data = (solaris_data*)device->ExtraData;
 217
 218     if(!data->thread)
 219         return;
 220
 221     data->killNow = 1;
 222     StopThread(data->thread);
 223     data->thread = NULL;
 224
 225     data->killNow = 0;
 226
 227     free(data->mix_data);
 228     data->mix_data = NULL;
 229 }
 230
 231
 232 static ALCboolean solaris_open_capture(ALCdevice *device, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
 233 {
 234     (void)device;
 235     (void)deviceName;
 236     (void)frequency;
 237     (void)format;
 238     (void)SampleSize;
 239     return ALC_FALSE;
 240 }
 241
 242 static void solaris_close_capture(ALCdevice *device)
 243 {
 244     (void)device;
 245 }
 246
 247 static void solaris_start_capture(ALCdevice *pDevice)
 248 {
 249     (void)pDevice;
 250 }
 251
 252 static void solaris_stop_capture(ALCdevice *pDevice)
 253 {
 254     (void)pDevice;
 255 }
 256
 257 static void solaris_capture_samples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples)
 258 {
 259     (void)pDevice;
 260     (void)pBuffer;
 261     (void)lSamples;
 262 }
 263
 264 static ALCuint solaris_available_samples(ALCdevice *pDevice)
 265 {
 266     (void)pDevice;
 267     return 0;
 268 }
 269
 270 static ALuint64 solaris_get_time(ALCdevice *Device)
 271 {
 272     return Device->SamplesPlayed * 1000000000 / Device->Frequency;
 273 }
 274
 275
 276 BackendFuncs solaris_funcs = {
 277     solaris_open_playback,
 278     solaris_close_playback,
 279     solaris_reset_playback,
 280     solaris_stop_playback,
 281     solaris_open_capture,
 282     solaris_close_capture,
 283     solaris_start_capture,
 284     solaris_stop_capture,
 285     solaris_capture_samples,
 286     solaris_available_samples,
 287     solaris_get_time
 288 };
 289
 290 void alc_solaris_init(BackendFuncs *func_list)
 291 {
 292     *func_list = solaris_funcs;
 293 }
 294
 295 void alc_solaris_deinit(void)
 296 {
 297 }
 298
 299 void alc_solaris_probe(int type)
 300 {
 301 #ifdef HAVE_STAT
 302     struct stat buf;
 303     if(stat(GetConfigValue("solaris", "device", "/dev/audio"), &buf) != 0)
 304         return;
 305 #endif
 306
 307     if(type == DEVICE_PROBE)
 308         AppendDeviceList(solaris_device);
 309     else if(type == ALL_DEVICE_PROBE)
 310         AppendAllDeviceList(solaris_device);
 311 }