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 Software";
  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     EnableRTPrio(RTPrioLevel);
  61
  62     frameSize = aluChannelsFromFormat(pDevice->Format) *
  63                 aluBytesFromFormat(pDevice->Format);
  64
  65     while(!data->killNow && pDevice->Connected)
  66     {
  67         ALint len = data->data_size;
  68         ALubyte *WritePtr = data->mix_data;
  69
  70         aluMixData(pDevice, 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                     AL_PRINT("write failed: %s\n", strerror(errno));
  79                     aluHandleDisconnect(pDevice);
  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 ALCboolean solaris_open_playback(ALCdevice *device, const ALCchar *deviceName)
  97 {
  98     char driver[64];
  99     solaris_data *data;
 100
 101     strncpy(driver, GetConfigValue("solaris", "device", "/dev/audio"), sizeof(driver)-1);
 102     driver[sizeof(driver)-1] = 0;
 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         if(errno != ENOENT)
 116             AL_PRINT("Could not open %s: %s\n", driver, strerror(errno));
 117         return ALC_FALSE;
 118     }
 119
 120     device->szDeviceName = strdup(deviceName);
 121     device->ExtraData = data;
 122     return ALC_TRUE;
 123 }
 124
 125 static void solaris_close_playback(ALCdevice *device)
 126 {
 127     solaris_data *data = (solaris_data*)device->ExtraData;
 128
 129     close(data->fd);
 130     free(data);
 131     device->ExtraData = NULL;
 132 }
 133
 134 static ALCboolean solaris_reset_playback(ALCdevice *device)
 135 {
 136     solaris_data *data = (solaris_data*)device->ExtraData;
 137     audio_info_t info;
 138     ALuint frameSize;
 139     int numChannels;
 140
 141     AUDIO_INITINFO(&info);
 142
 143     switch(aluBytesFromFormat(device->Format))
 144     {
 145         case 1:
 146             info.play.precision = 8;
 147             info.play.encoding = AUDIO_ENCODING_LINEAR8;
 148             break;
 149         case 4:
 150             switch(numChannels)
 151             {
 152                 case 1: device->Format = AL_FORMAT_MONO16; break;
 153                 case 2: device->Format = AL_FORMAT_STEREO16; break;
 154                 case 4: device->Format = AL_FORMAT_QUAD16; break;
 155                 case 6: device->Format = AL_FORMAT_51CHN16; break;
 156                 case 7: device->Format = AL_FORMAT_61CHN16; break;
 157                 case 8: device->Format = AL_FORMAT_71CHN16; break;
 158             }
 159             /* fall-through */
 160         case 2:
 161             info.play.precision = 16;
 162             info.play.encoding = AUDIO_ENCODING_LINEAR;
 163             break;
 164         default:
 165             AL_PRINT("Unknown format: 0x%x\n", device->Format);
 166             return ALC_FALSE;
 167     }
 168
 169     numChannels = aluChannelsFromFormat(device->Format);
 170     info.play.sample_rate = device->Frequency;
 171     info.play.channels = numChannels;
 172
 173     frameSize = numChannels * aluBytesFromFormat(device->Format);
 174     info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
 175
 176     if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
 177     {
 178         AL_PRINT("ioctl failed: %s\n", strerror(errno));
 179         return ALC_FALSE;
 180     }
 181
 182     if(aluChannelsFromFormat(device->Format) != info.play.channels)
 183     {
 184         AL_PRINT("Could not set %d channels, got %d instead\n", aluChannelsFromFormat(device->Format), info.play.channels);
 185         return ALC_FALSE;
 186     }
 187
 188     if(!((info.play.precision == 8 && aluBytesFromFormat(device->Format) == 1) ||
 189          (info.play.precision == 16 && aluBytesFromFormat(device->Format) == 2)))
 190     {
 191         AL_PRINT("Could not set %d-bit output, got %d\n", aluBytesFromFormat(device->Format)*8, info.play.precision);
 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     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
 271 BackendFuncs solaris_funcs = {
 272     solaris_open_playback,
 273     solaris_close_playback,
 274     solaris_reset_playback,
 275     solaris_stop_playback,
 276     solaris_open_capture,
 277     solaris_close_capture,
 278     solaris_start_capture,
 279     solaris_stop_capture,
 280     solaris_capture_samples,
 281     solaris_available_samples
 282 };
 283
 284 void alc_solaris_init(BackendFuncs *func_list)
 285 {
 286     *func_list = solaris_funcs;
 287 }
 288
 289 void alc_solaris_deinit(void)
 290 {
 291 }
 292
 293 void alc_solaris_probe(int type)
 294 {
 295 #ifdef HAVE_STAT
 296     struct stat buf;
 297     if(stat(GetConfigValue("solaris", "device", "/dev/audio"), &buf) != 0)
 298         return;
 299 #endif
 300
 301     if(type == DEVICE_PROBE)
 302         AppendDeviceList(solaris_device);
 303     else if(type == ALL_DEVICE_PROBE)
 304         AppendAllDeviceList(solaris_device);
 305 }