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