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