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