text: /**
   * OpenAL cross platform audio library
   * Copyright (C) 1999-2007 by authors.
   * This library is free software; you can redistribute it and/or
   *  modify it under the terms of the GNU Library General Public
   *  License as published by the Free Software Foundation; either
   *  version 2 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   *  Library General Public License for more details.
   *
   * You should have received a copy of the GNU Library General Public
   *  License along with this library; if not, write to the
   *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   *  Boston, MA  02111-1307, USA.
   * Or go to http://www.gnu.org/copyleft/lgpl.html
   */
  
  #include "config.h"
  
  #include <sys/ioctl.h>
  #include <sys/types.h>
  #include <sys/stat.h>
  #include <fcntl.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <memory.h>
  #include <unistd.h>
  #include <errno.h>
  #include <math.h>
  #include "alMain.h"
  #include "AL/al.h"
  #include "AL/alc.h"
  
  #include <sys/audioio.h>
  
  
  static char *solaris_device;
  
  typedef struct {
      int fd;
      volatile int killNow;
      ALvoid *thread;
  
      ALubyte *mix_data;
      int data_size;
  } solaris_data;
  
  
  static ALuint SolarisProc(ALvoid *ptr)
  {
      ALCdevice *pDevice = (ALCdevice*)ptr;
      solaris_data *data = (solaris_data*)pDevice->ExtraData;
      int remaining = 0;
      int wrote;
  
      while(!data->killNow)
      {
          int len = data->data_size - remaining;
  
          if(len > 0)
          {
              SuspendContext(NULL);
              aluMixData(pDevice->Context, data->mix_data+remaining, len, pDevice->Format);
              ProcessContext(NULL);
          }
  
          remaining += len;
          wrote = write(data->fd, data->mix_data, remaining);
          if(wrote < 0)
          {
              AL_PRINT("write failed: %s\n", strerror(errno));
              remaining = 0;
          }
          else if(wrote > 0)
          {
              remaining -= wrote;
              if(remaining > 0)
                  memmove(data->mix_data, data->mix_data+wrote, remaining);
          }
          else
              Sleep(1);
      }
  
      return 0;
  }
  
  
  static ALCboolean solaris_open_playback(ALCdevice *device, const ALCchar *deviceName)
  {
      audio_info_t info;
      ALuint frameSize;
      char driver[64];
      int numChannels;
      solaris_data *data;
  
      strncpy(driver, GetConfigValue("solaris", "device", "/dev/audio"), sizeof(driver)-1);
      driver[sizeof(driver)-1] = 0;
      if(deviceName)
      {
          if(strcmp(deviceName, solaris_device))
              return ALC_FALSE;
          device->szDeviceName = solaris_device;
      }
      else
          device->szDeviceName = solaris_device;
  
      data = (solaris_data*)calloc(1, sizeof(solaris_data));
      data->killNow = 0;
  
      data->fd = open(driver, O_WRONLY);
      if(data->fd == -1)
      {
          free(data);
          AL_PRINT("Could not open %s: %s\n", driver, strerror(errno));
          return ALC_FALSE;
      }
  
      numChannels = aluChannelsFromFormat(device->Format);
      AUDIO_INITINFO(&info);
      info.play.sample_rate = device->Frequency;
      info.play.channels = numChannels;
  
      switch(aluBytesFromFormat(device->Format))
      {
          case 1:
              info.play.precision = 8;
              info.play.encoding = AUDIO_ENCODING_LINEAR8;
              break;
          case 2:
              info.play.precision = 16;
              info.play.encoding = AUDIO_ENCODING_LINEAR;
              break;
          default:
              AL_PRINT("Unknown format?! %x\n", device->Format);
      }
  
      frameSize = numChannels * aluBytesFromFormat(device->Format);
      info.play.buffer_size = device->UpdateSize * frameSize;
  
      if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
      {
          AL_PRINT("ioctl failed: %s\n", strerror(errno));
          close(data->fd);
          free(data);
          return ALC_FALSE;
      }
  
      device->Frequency = info.play.sample_rate;
  
      if(aluChannelsFromFormat(device->Format) != info.play.channels)
      {
          AL_PRINT("Could not set %d channels, got %d instead\n", aluChannelsFromFormat(device->Format), info.play.channels);
          close(data->fd);
          free(data);
          return ALC_FALSE;
      }
  
      if(!((info.play.precision == 8 && aluBytesFromFormat(device->Format) == 1) ||
           (info.play.precision == 16 && aluBytesFromFormat(device->Format) == 2)))
      {
          AL_PRINT("Could not set %d-bit output, got %d\n", aluBytesFromFormat(device->Format)*8, info.play.precision);
          close(data->fd);
          free(data);
          return ALC_FALSE;
      }
  
      device->UpdateSize = info.play.buffer_size / 4;
  
      data->data_size = device->UpdateSize * frameSize;
      data->mix_data = calloc(1, data->data_size);
  
      device->ExtraData = data;
      data->thread = StartThread(SolarisProc, device);
      if(data->thread == NULL)
      {
          device->ExtraData = NULL;
          free(data->mix_data);
          free(data);
          return ALC_FALSE;
      }
  
      return ALC_TRUE;
  }
  
  static void solaris_close_playback(ALCdevice *device)
  {
      solaris_data *data = (solaris_data*)device->ExtraData;
      data->killNow = 1;
      StopThread(data->thread);
  
      close(data->fd);
  
      free(data->mix_data);
      free(data);
      device->ExtraData = NULL;
  }
  
  
  static ALCboolean solaris_open_capture(ALCdevice *device, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
  {
      (void)device;
      (void)deviceName;
      (void)frequency;
      (void)format;
      (void)SampleSize;
      return ALC_FALSE;
  }
  
  static void solaris_close_capture(ALCdevice *device)
  {
      (void)device;
  }
  
  static void solaris_start_capture(ALCdevice *pDevice)
  {
      (void)pDevice;
  }
  
  static void solaris_stop_capture(ALCdevice *pDevice)
  {
      (void)pDevice;
  }
  
  static void solaris_capture_samples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples)
  {
      (void)pDevice;
      (void)pBuffer;
      (void)lSamples;
  }
  
  static ALCuint solaris_available_samples(ALCdevice *pDevice)
  {
      (void)pDevice;
      return 0;
  }
  
  
  BackendFuncs solaris_funcs = {
      solaris_open_playback,
      solaris_close_playback,
      solaris_open_capture,
      solaris_close_capture,
      solaris_start_capture,
      solaris_stop_capture,
      solaris_capture_samples,
      solaris_available_samples
  };
  
  void alc_solaris_init(BackendFuncs *func_list)
  {
      *func_list = solaris_funcs;
  
      solaris_device = AppendDeviceList("Solaris Software");
      AppendAllDeviceList(solaris_device);
  }
  