source: GPL/branches/uniaud32-next/lib32/soundmixer.c@ 715

/* $Id: soundmixer.c,v 1.1.1.1 2003/07/02 13:57:02 eleph Exp $ */
/*
 * MMPM/2 to OSS interface translation layer
 *
 * (C) 2000-2002 InnoTek Systemberatung GmbH
 * (C) 2000-2001 Sander van Leeuwen (sandervl@xs4all.nl)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
 * USA.
 *
 */

#include <sound/core.h>
#include <sound/control.h>
#include <sound/info.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/minors.h>
#include <linux/file.h>
#include <linux/soundcard.h>

#define LINUX
#include <ossidc32.h>
#include <stacktoflat.h>
#include <stdlib.h>
#include "soundoss.h"

extern OpenedHandles opened_handles[8 * 256]; // from sound.c

static struct {
  char *name;
  unsigned int index;
  unsigned int recsrc;
} ossid[OSS_MIXER_NRDEVICES] = {
  /* OSS_MIXER_VOLUME   */ { "Master", 0 , -1},
  /* OSS_MIXER_BASS   */ { "Tone Control - Bass", 0, -1},
  /* OSS_MIXER_TREBLE   */ { "Tone Control - Treble", 0, -1},
  /* OSS_MIXER_SYNTH    */ { "Synth", 0 , OSS32_MIX_RECSRC_SYNTH},
  /* OSS_MIXER_PCM    */ { "PCM", 0 , -1},
  /* OSS_MIXER_PCSPEAKER  */ { "PC Speaker", 0 , -1},
  /* OSS_MIXER_LINE   */ { "Line", 0 , OSS32_MIX_RECSRC_LINE},
  /* OSS_MIXER_MIC    */ { "Mic", 0, OSS32_MIX_RECSRC_MIC},
  /* OSS_MIXER_CD     */ { "CD", 0 , OSS32_MIX_RECSRC_CD},
  /* OSS_MIXER_IMIX   */ { "Monitor Mix", 0 , OSS32_MIX_RECSRC_MIXER},
  /* OSS_MIXER_ALTPCM   */ { "PCM", 1 , -1},
  /* OSS_MIXER_RECLEV   */ { "-- nothing --", 0 , -1},
  /* OSS_MIXER_IGAIN    */ { "Capture", 0 , -1},
  /* OSS_MIXER_OGAIN    */ { "Playback", 0 , -1},
  /* OSS_MIXER_LINE1    */ { "Aux", 0 , OSS32_MIX_RECSRC_AUX},
  /* OSS_MIXER_LINE2    */ { "Aux", 1 , -1},
  /* OSS_MIXER_LINE3    */ { "Aux", 2 , -1},
  /* OSS_MIXER_DIGITAL1 */ { "Digital", 0 , -1},
  /* OSS_MIXER_DIGITAL2 */ { "Digital", 1 , -1},
  /* OSS_MIXER_DIGITAL3 */ { "Digital", 2 , -1},
  /* OSS_MIXER_PHONEIN  */ { "Phone", 0 , OSS32_MIX_RECSRC_PHONE},
  /* OSS_MIXER_PHONEOUT */ { "Phone", 1 , -1},
  /* OSS_MIXER_VIDEO    */ { "Video", 0 , OSS32_MIX_RECSRC_VIDEO},
  /* OSS_MIXER_RADIO    */ { "Radio", 0 , -1},
  /* OSS_MIXER_MONITOR  */ { "Monitor", 0 , -1},
  /* OSS_MIXER_3DDEPTH  */ { "3D Control - Depth", 0 , -1},
  /* OSS_MIXER_3DCENTER */ { "3D Control - Center", 0 , -1},
  /* OSS_MIXER_FRONT    */ { "Front", 0 , -1},
  /* OSS_MIXER_SPEAKER  */ { "Speaker", 0 , -1},
  /* OSS_MIXER_HEADPHONE */ { "Headphone", 0 , -1},
};
char *szRecSources[OSS32_MIX_RECSRC_MAX] = {
  "Mic", "CD", "Line", "Video", "Aux", "Mix", "Mix Mono", "Phone", "Synth"
};

static unsigned char LinToLog[OSS32_MAX_VOLUME+1] = {
  0,   0, 0,   0,   1,   2, 2,   5,   5,  10,
 10,  10,  16,  19,  20,  22,  24,  25,  27,  27,
 28,  28,  29,  30,  30,  35,  35,  35,  39,  39,
 43,  44,  45,  47,  48,  49,  50,  51,  52,  53,
 55,  56,  57,  59,  60,  62,  63,  64,  65,  66,
 67,  68,  69,  70,  71,  72,  73,  74,  74,  75,
 76,  77,  78,  79,  79,  80,  81,  82,  83,  84,
 85,  86,  87,  88,  89,  90,  91,  92,  92,  93,
 93,  94,  94,  95,  95,  96,  96,  97,  97,  98,
 98,  99,  99,  99,  99, 100, 100, 100, 100, 100,
 100
};

//******************************************************************************
//Convert linear volume to logarithmic
//******************************************************************************
ULONG ConvertVolume(ULONG ulLinVolume, ULONG ulLogVolMax)
{
  if(ulLinVolume > OSS32_MAX_VOLUME) {
    ulLinVolume = OSS32_MAX_VOLUME;
  }
  ulLinVolume = LinToLog[ulLinVolume];

  return (ulLinVolume * ulLogVolMax) / OSS32_MAX_VOLUME;
}

//******************************************************************************
//******************************************************************************
OSSRET OSS32_MixOpen(ULONG deviceid, OSSSTREAMID *pStreamId)
{
  mixerhandle *pHandle = NULL;
  int      ret, i, j, sz;

  if(pStreamId == NULL) {
    DebugInt3();
    return OSSERR_INVALID_PARAMETER;
  }
  *pStreamId = 0;

  if(alsa_fops == NULL) {
    ret = OSSERR_NO_DEVICE_AVAILABLE;
    goto failure;
  }

  sz = sizeof(mixerhandle);
  pHandle = kmalloc(sz, GFP_KERNEL);
  if(pHandle == NULL) {
    ret = OSSERR_OUT_OF_MEMORY;
    goto failure;
  }
  memset(pHandle, 0, sizeof(mixerhandle));

  //set operation to non-blocking
  pHandle->file.f_flags = O_NONBLOCK;

  //setup pointers in file structure (used internally by ALSA)
  pHandle->file.f_dentry      = &pHandle->d_entry;
  pHandle->file.f_dentry->d_inode = &pHandle->inode;

  pHandle->file.f_mode  = FMODE_WRITE;
  pHandle->inode.i_rdev = SNDRV_MINOR(deviceid, SNDRV_MINOR_CONTROL);

  ret = alsa_fops->open(&pHandle->inode, &pHandle->file);
  if(ret) {
    goto failure;
  }
  //retrieve mixer information
  ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file,
                  SNDRV_CTL_IOCTL_CARD_INFO,
                  (ULONG)&pHandle->info);
  if(ret) {
    goto failure;
  }
  //get the number of mixer elements
  pHandle->list.offset = 0;
  pHandle->list.space  = 0;
  ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file,
                  SNDRV_CTL_IOCTL_ELEM_LIST,
                  (ULONG)&pHandle->list);
  if(ret) {
    goto failure;
  }
  //allocate memory for all mixer elements
  pHandle->pids = (struct snd_ctl_elem_id *)kmalloc(sizeof(struct snd_ctl_elem_id)*pHandle->list.count, GFP_KERNEL);
  if(pHandle->pids == NULL) {
    goto failure;
  }
  //and retrieve all mixer elements
  pHandle->list.offset = 0;
  pHandle->list.space  = pHandle->list.count;
  pHandle->list.pids   = pHandle->pids;
  ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file,
                  SNDRV_CTL_IOCTL_ELEM_LIST,
                  (ULONG)&pHandle->list);
  if(ret) {
    goto failure;
  }

#if 0
  dprintf(("Mixer name: %s", pHandle->info.mixername));
  dprintf(("List of mixer elements:"));
  for(i=0;i<pHandle->list.count;i++) {
    dprintf(("index %d name %s id %d device %d subdevice %d", pHandle->pids[i].index, pHandle->pids[i].name, pHandle->pids[i].numid, pHandle->pids[i].device, pHandle->pids[i].subdevice));
  }
#endif

  //Extract standard mixer controls from array with control names
  for(j=0;j<OSS_MIXER_NRDEVICES;j++)
  {
    int namelen = strlen(ossid[j].name);

    pHandle->controls[j].idxVolume      = -1;
    pHandle->controls[j].idxMute      = -1;
    pHandle->controls[j].idxCustom      = -1;
    pHandle->controls[j].idxCaptureSwitch = -1;

    for(i=0;i<pHandle->list.count;i++) {
      if (pHandle->pids[i].index == ossid[j].index && strncmp(pHandle->pids[i].name, ossid[j].name, namelen) == 0) {
        int controlnamelen = strlen(pHandle->pids[i].name);

        if(namelen == controlnamelen) { //control names are identical; found exact match
          pHandle->controls[j].idxVolume = i;
          break;
        } else { //first part of the control name is correct; now find out what is it exactly
          char *nextword = &pHandle->pids[i].name[namelen];
          while(*nextword && *nextword == ' ') nextword++;

          if(strncmp(nextword, MIXER_PLAYBACKVOLUME, sizeof(MIXER_PLAYBACKVOLUME)-1) == 0 ||
             strncmp(nextword, MIXER_VOLUME, sizeof(MIXER_VOLUME)-1) == 0)
          { //volume control
            pHandle->controls[j].idxVolume = i;
          }
          else
          if(strncmp(nextword, MIXER_PLAYBACKSWITCH, sizeof(MIXER_PLAYBACKSWITCH)-1) == 0 ||
             strncmp(nextword, MIXER_SWITCH, sizeof(MIXER_SWITCH)-1) == 0)
          { //mute control
            pHandle->controls[j].idxMute = i;
            if (pHandle->controls[j].idxVolume == -1) pHandle->controls[j].idxVolume = i;
          }
          else
          if(strncmp(nextword, MIXER_SOURCE, sizeof(MIXER_SOURCE)-1) == 0)
          { //source control (e.g. recording source)
            pHandle->controls[j].idxCustom = i;
          }
          else
          if(strncmp(nextword, MIXER_CAPTUREROUTE, sizeof(MIXER_CAPTUREROUTE)-1) == 0 ||
             strncmp(nextword, MIXER_CAPTURESWITCH, sizeof(MIXER_CAPTURESWITCH)-1) == 0)
          { //source control for recording (per input)
            pHandle->controls[j].idxCaptureSwitch = i;
          }
          else
          if(i == OSS_MIXER_MIC) {
            if(strncmp(nextword, MIXER_BOOST, sizeof(MIXER_BOOST)-1) == 0) { //mic boost switch
              pHandle->controls[j].idxCustom = i;
            }
          }
        }
      }
    }
  }

  pHandle->reccaps = 0;
  for (j=0;j<OSS32_MIX_RECSRC_MAX;j++) {
    pHandle->idxRecCaps[j] = -1;
  }

  //request information about available capture sources
  if (pHandle->controls[OSS_MIXER_IGAIN].idxCustom != -1) {
    struct snd_ctl_elem_info  *pElemInfo = NULL;
    int idx, j;

    idx = pHandle->controls[OSS_MIXER_IGAIN].idxCustom;

    //set operation to non-blocking
    pHandle->file.f_flags = O_NONBLOCK;

    pHandle->rectype = RECTYPE_SELECTOR;

    //too big to put on the stack
    pElemInfo = (struct snd_ctl_elem_info *)kmalloc(sizeof(struct snd_ctl_elem_info), GFP_KERNEL);
    if(pElemInfo == NULL) {
      DebugInt3();
      goto failure;
    }

    pElemInfo->value.enumerated.items = 1;
    for(i=0;i<pElemInfo->value.enumerated.items;i++)
    {
      pElemInfo->value.enumerated.item = i;
      pElemInfo->id.numid = pHandle->pids[idx].numid;
      ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_INFO, (ULONG)pElemInfo);
      if(ret) {
        DebugInt3();
        break;
      }
      if(pElemInfo->type != SNDRV_CTL_ELEM_TYPE_ENUMERATED) {
        DebugInt3();
        break;
      }
      for(j=0;j<OSS32_MIX_RECSRC_MAX;j++) {
        if(!strcmp(pElemInfo->value.enumerated.name, szRecSources[j])) {
          pHandle->reccaps    |= OSS32_MIX_FLAG(j);
          pHandle->idxRecCaps[j] = i; //save alsa index
          break;
        }
      }
    }
    kfree(pElemInfo);
  }
  else
  {//This card has no record source selection, but probably route switches for
   //each input source (SB mixers (also ALS4000), CMedia)
    pHandle->rectype = RECTYPE_SWITCH;
    for(j=0;j<OSS32_MIX_RECSRC_MAX;j++) {
      pHandle->idxRecCaps[j] = -1;
    }
    for(j=0;j<OSS_MIXER_NRDEVICES;j++)
    {
      if(pHandle->controls[j].idxCaptureSwitch != -1) {
        pHandle->reccaps          |= OSS32_MIX_FLAG(ossid[j].recsrc);
        pHandle->idxRecCaps[ossid[j].recsrc] = pHandle->controls[j].idxCaptureSwitch; //save alsa index
      }
    }
  }

  pHandle->magic = MAGIC_MIXER_ALSA32;
  *pStreamId = (ULONG)pHandle;
  return OSSERR_SUCCESS;

failure:
  if(pHandle) {
    if(pHandle->pids) kfree(pHandle->pids);
    kfree(pHandle);
  }
  DebugInt3();
  return OSSERR_OUT_OF_MEMORY;
}
//******************************************************************************
//******************************************************************************
OSSRET OSS32_MixClose(OSSSTREAMID streamid)
{
  mixerhandle *pHandle = (mixerhandle *)streamid;
  int      ret;

  if(pHandle == NULL || pHandle->magic != MAGIC_MIXER_ALSA32) {
    DebugInt3();
    return OSSERR_INVALID_STREAMID;
  }
  //set operation to non-blocking
  pHandle->file.f_flags = O_NONBLOCK;
  ret = pHandle->file.f_op->release(&pHandle->inode, &pHandle->file);
  kfree(pHandle->pids);  //free mixer element array
  kfree(pHandle);      //free handle data

  if(ret) {
    DebugInt3();
    return UNIXToOSSError(ret);
  }
  return OSSERR_SUCCESS;
}
//******************************************************************************
//******************************************************************************
OSSRET OSS32_MixGetVolume(OSSSTREAMID streamid, ULONG line, ULONG *pVolume)
{
  mixerhandle *pHandle = (mixerhandle *)streamid;
  //int      ret;

  if(pHandle == NULL || pHandle->magic != MAGIC_MIXER_ALSA32) {
    DebugInt3();
    return OSSERR_INVALID_STREAMID;
  }
  //set operation to non-blocking
  pHandle->file.f_flags = O_NONBLOCK;

  return OSSERR_NOT_SUPPORTED;
}
//******************************************************************************
//******************************************************************************
OSSRET OSS32_MixSetVolume(OSSSTREAMID streamid, ULONG line, ULONG volume)
{
  mixerhandle      *pHandle = (mixerhandle *)streamid;
  struct snd_ctl_elem_value *pElem = NULL;
  struct snd_ctl_elem_info  *pElemInfo;
  int           ret, idx, lVol, rVol = 0, idxMute;
  //int cnt;

  //dprintf(("OSS32_MixSetVolume line=%d\n", line));
  if(pHandle == NULL || pHandle->magic != MAGIC_MIXER_ALSA32) {
    printk("Invalid handle in OSS32_MixSetVolume\n");
    DebugInt3();
    return OSSERR_INVALID_STREAMID;
  }
  //set operation to non-blocking
  pHandle->file.f_flags = O_NONBLOCK;

  //too big to put on the stack
  pElem = (struct snd_ctl_elem_value *)kmalloc(sizeof(struct snd_ctl_elem_value) + sizeof(struct snd_ctl_elem_info), GFP_KERNEL);
  if(pElem == NULL) {
    printk("Out of memory in OSS32_MixSetVolume\n");
    DebugInt3();
    return OSSERR_OUT_OF_MEMORY;
  }
  pElemInfo = (struct snd_ctl_elem_info *)(pElem+1);

  switch(line) {
  case OSS32_MIX_VOLUME_MASTER_FRONT:
    idx = pHandle->controls[OSS_MIXER_VOLUME].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_VOLUME].idxMute;
    if (idx == -1)
    {
      /* HDA codecs workaround */
      idx = pHandle->controls[OSS_MIXER_FRONT].idxVolume;
      idxMute = pHandle->controls[OSS_MIXER_FRONT].idxMute;
    }
    break;
  case OSS32_MIX_VOLUME_MASTER_REAR: //TODO:
    idx = pHandle->controls[OSS_MIXER_VOLUME].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_VOLUME].idxMute;
    break;
  case OSS32_MIX_VOLUME_PCM:
    idx = pHandle->controls[OSS_MIXER_PCM].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_PCM].idxMute;
    if (idx == -1)
    {
      /* HDA codecs workaround */
      idx = pHandle->controls[OSS_MIXER_FRONT].idxVolume;
      idxMute = pHandle->controls[OSS_MIXER_FRONT].idxMute;
    }
    /* HDA codecs workaround from Andy */
    if (idx == -1)
    {
      idx = pHandle->controls[OSS_MIXER_SPEAKER].idxVolume;
      idxMute = pHandle->controls[OSS_MIXER_SPEAKER].idxMute;
    }
    /* HDA codecs workaround from Andy */
    break;
  case OSS32_MIX_VOLUME_MIDI:
    idx = pHandle->controls[OSS_MIXER_SYNTH].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_SYNTH].idxMute;
    break;
  case OSS32_MIX_VOLUME_LINEIN:
    idx = pHandle->controls[OSS_MIXER_LINE].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_LINE].idxMute;
    break;
  case OSS32_MIX_VOLUME_MIC:
    idx = pHandle->controls[OSS_MIXER_MIC].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_MIC].idxMute;
    break;
  case OSS32_MIX_VOLUME_CD:
    idx = pHandle->controls[OSS_MIXER_CD].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_CD].idxMute;
    break;
  case OSS32_MIX_VOLUME_SPDIF:
    idx = pHandle->controls[OSS_MIXER_DIGITAL1].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_DIGITAL1].idxMute;
    break;
  case OSS32_MIX_VOLUME_VIDEO:
    idx = pHandle->controls[OSS_MIXER_VIDEO].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_VIDEO].idxMute;
    break;
  case OSS32_MIX_VOLUME_PCSPEAKER:
    idx = pHandle->controls[OSS_MIXER_PCSPEAKER].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_PCSPEAKER].idxMute;
    break;
  case OSS32_MIX_VOLUME_PHONE:
    idx = pHandle->controls[OSS_MIXER_PHONEOUT].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_PHONEOUT].idxMute;
    break;
  case OSS32_MIX_VOLUME_HEADPHONE:
    idx = pHandle->controls[OSS_MIXER_HEADPHONE].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_HEADPHONE].idxMute;
    break;
  case OSS32_MIX_VOLUME_SPEAKER:
    idx = pHandle->controls[OSS_MIXER_SPEAKER].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_SPEAKER].idxMute;
    break;
  case OSS32_MIX_VOLUME_AUX:
    idx = pHandle->controls[OSS_MIXER_LINE1].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_LINE1].idxMute;
    break;
  case OSS32_MIX_VOLUME_CAPTURE:
    idx = pHandle->controls[OSS_MIXER_IGAIN].idxVolume;
    idxMute = pHandle->controls[OSS_MIXER_IGAIN].idxMute;
    break;

  default:
    DebugInt3();
    ret = OSSERR_INVALID_PARAMETER;
    goto fail;
  }
  if(idx == -1) {
    rprintf(("Unknown control %d", line));
    ret = OSSERR_INVALID_PARAMETER;
    goto fail;
  }

  if(idxMute != -1 && volume != 0) {
    //disable mute
    pElem->id.numid = pHandle->pids[idxMute].numid;
    pElem->indirect = 0;

    pElem->value.integer.value[0] = TRUE;  //switch, not mute control (inversed)
    pElem->value.integer.value[1] = TRUE;
    ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_WRITE, (ULONG)pElem);
  }
  //request information about mixer control
  pElemInfo->id.numid = pHandle->pids[idx].numid;
  ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_INFO, (ULONG)pElemInfo);
  if(ret) {
    ret = UNIXToOSSError(ret);
    DebugInt3();
    goto fail;
  }
  if(pElemInfo->type != SNDRV_CTL_ELEM_TYPE_INTEGER) {
    ret = OSSERR_INVALID_PARAMETER;
    DebugInt3();
    goto fail;
  }
  pElem->id.numid = pHandle->pids[idx].numid;
  pElem->indirect = 0;

  lVol = ConvertVolume(GET_VOLUME_L(volume), pElemInfo->value.integer.max);
  pElem->value.integer.value[0] = lVol;

  if(pElemInfo->count > 1) { //stereo
    rVol = ConvertVolume(GET_VOLUME_R(volume), pElemInfo->value.integer.max);
    pElem->value.integer.value[1] = rVol;
  }

  dprintf(("OSS32_MixSetVolume of %s streamid %X to (%d,%d)(%d,%d) caps %d",
    pHandle->pids[idx].name, (ULONG)pHandle,
    GET_VOLUME_L(volume), GET_VOLUME_R(volume), lVol, rVol, pElemInfo->value.integer.max));

#if 1
  ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_WRITE, (ULONG)pElem);
#else
  // looking for more, then one opened streams to prevent of muting active stream
  cnt = 0;
  for (idx=0; idx < 8*256; idx++)
    if (opened_handles[idx].handle != 0)
      cnt++;

  dprintf(("OSS32_MixSetVolume old cnt=%X line=%x lVol=%x rVol=%x", cnt, line, lVol, rVol));
  //    if (((cnt == 1 && (lVol==0 && rVol==0)) || (lVol>0 && rVol>0)) ||
  if (cnt == 1 || line != OSS32_MIX_VOLUME_PCM)
  {
    dprintf(("OSS32_MixSetVolume Ioctl"));
    ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_WRITE, (ULONG)pElem);

    if(idxMute != -1 && volume == 0) {
      //enable mute
      pElem->id.numid = pHandle->pids[idxMute].numid;
      pElem->indirect = 0;

      pElem->value.integer.value[0] = FALSE;  //switch, not mute control (inversed)
      pElem->value.integer.value[1] = FALSE;
      dprintf(("OSS32_MixSetVolume Ioctl mute"));
      ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_WRITE, (ULONG)pElem);
    }
  }
#endif

  kfree(pElem);
  pElem = NULL;
  if(ret) {
    rprintf(("OSS32_MixSetVolume ret=%x", ret));
    DebugInt3();
    return UNIXToOSSError(ret);
  }
  return OSSERR_SUCCESS;

fail:
  if(pElem) kfree(pElem);
  return ret;
}
//******************************************************************************
//******************************************************************************
OSSRET OSS32_MixSetProperty(OSSSTREAMID streamid, ULONG ulLine, ULONG ulValue)
{
  mixerhandle      *pHandle = (mixerhandle *)streamid;
  struct snd_ctl_elem_value *pElem = NULL;
  struct snd_ctl_elem_info  *pElemInfo;
  int           ret, idx = -1, lVol, rVol = 0, j, i;

  if(pHandle == NULL || pHandle->magic != MAGIC_MIXER_ALSA32) {
    DebugInt3();
    return OSSERR_INVALID_STREAMID;
  }
  //set operation to non-blocking
  pHandle->file.f_flags = O_NONBLOCK;

  //too big to put on the stack
  pElem = (struct snd_ctl_elem_value *)kmalloc(sizeof(struct snd_ctl_elem_value) + sizeof(struct snd_ctl_elem_info), GFP_KERNEL);
  if(pElem == NULL) {
    DebugInt3();
    return OSSERR_OUT_OF_MEMORY;
  }
  pElemInfo = (struct snd_ctl_elem_info *)(pElem+1);

  switch(ulLine) {
  case OSS32_MIX_INPUTSRC:
    idx = pHandle->controls[OSS_MIXER_IGAIN].idxCustom;
    //is this capture source supported by the hardware??
    if(!(pHandle->reccaps & OSS32_MIX_FLAG(ulValue))) {
      DebugInt3();
      ret = OSSERR_INVALID_PARAMETER;
      goto fail;
    }
    if(pHandle->rectype == RECTYPE_SELECTOR) {//input source selector
      //set left and right capture source
      pElem->value.enumerated.item[0] = pHandle->idxRecCaps[ulValue];
      pElem->value.enumerated.item[1] = pHandle->idxRecCaps[ulValue];
    }
    else {//capture switch for each input source
      //first turn off all capture switches...
      for(j=0;j<OSS32_MIX_RECSRC_MAX;j++)
      {
        if(pHandle->idxRecCaps[j] != -1) {
          idx               = pHandle->idxRecCaps[j];

          //request information about mixer control
          pElemInfo->id.numid       = pHandle->pids[idx].numid;
          ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_INFO, (ULONG)pElemInfo);
          if(ret) {
            ret = UNIXToOSSError(ret);
            DebugInt3();
            goto fail;
          }
          if(pElemInfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN) {
            ret = OSSERR_INVALID_PARAMETER;
            DebugInt3();
            goto fail;
          }

          pElem->id.numid         = pHandle->pids[idx].numid;
          pElem->indirect         = 0;
          for(i=0;i<pElemInfo->count;i++) {
            pElem->value.integer.value[i] = 0;
          }

          ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_WRITE, (ULONG)pElem);
          if(ret) {
            ret = UNIXToOSSError(ret);
            DebugInt3();
            goto fail;
          }
        }
      }
      //request information about mixer control
      pElemInfo->id.numid = pHandle->pids[idx].numid;
      ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_INFO, (ULONG)pElemInfo);
      if(ret) {
        ret = UNIXToOSSError(ret);
        DebugInt3();
        goto fail;
      }

      //and enable the capture switch for the selected input source
      idx = pHandle->idxRecCaps[ulValue];
      for(i=0;i<pElemInfo->count;i++) {
        pElem->value.integer.value[i] = 1;
      }
    }

    break;

  case OSS32_MIX_SWITCH_MICBOOST:
    idx = pHandle->controls[OSS_MIXER_MIC].idxCustom;
    if(idx == -1) {
      DebugInt3();
      ret = OSSERR_INVALID_PARAMETER;
      goto fail;
    }
    //set mic switch value (on/off)
    pElem->value.integer.value[0] = ulValue;
    break;

  case OSS32_MIX_LEVEL_BASS:
    idx = pHandle->controls[OSS_MIXER_BASS].idxVolume;
    goto levelcontinue;
  case OSS32_MIX_LEVEL_TREBLE:
    idx = pHandle->controls[OSS_MIXER_TREBLE].idxVolume;
    goto levelcontinue;
  case OSS32_MIX_LEVEL_3DCENTER:
    idx = pHandle->controls[OSS_MIXER_3DCENTER].idxVolume;
    goto levelcontinue;
  case OSS32_MIX_LEVEL_3DDEPTH:
    idx = pHandle->controls[OSS_MIXER_3DDEPTH].idxVolume;
levelcontinue:

    if(idx == -1) {//supported?
      DebugInt3();
      ret = OSSERR_INVALID_PARAMETER;
      goto fail;
    }
    //request information about mixer control
    pElemInfo->id.numid = pHandle->pids[idx].numid;
    ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_INFO, (ULONG)pElemInfo);
    if(ret) {
      ret = UNIXToOSSError(ret);
      DebugInt3();
      goto fail;
    }
    if(pElemInfo->type != SNDRV_CTL_ELEM_TYPE_INTEGER) {
      ret = OSSERR_INVALID_PARAMETER;
      DebugInt3();
      goto fail;
    }
    lVol = ConvertVolume(GET_VOLUME_L(ulValue), pElemInfo->value.integer.max);
    pElem->value.integer.value[0] = lVol;

    if(pElemInfo->count > 1) { //stereo
      rVol = ConvertVolume(GET_VOLUME_R(ulValue), pElemInfo->value.integer.max);
      pElem->value.integer.value[1] = rVol;
    }
    break;

  default:
    DebugInt3();
    ret = OSSERR_INVALID_PARAMETER;
    goto fail;
  }
  pElem->id.numid = pHandle->pids[idx].numid;
  pElem->indirect = 0;

  dprintf(("OSS32_MixSetProperty of %s to %x", pHandle->pids[idx].name, ulValue));
  ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file, SNDRV_CTL_IOCTL_ELEM_WRITE, (ULONG)pElem);

  kfree(pElem);
  pElem = NULL;
  if(ret) {
    DebugInt3();
    return UNIXToOSSError(ret);
  }
  return OSSERR_SUCCESS;

fail:
  if(pElem) kfree(pElem);
  return ret;
}
//******************************************************************************
//******************************************************************************
OSSRET OSS32_MixGetProperty(OSSSTREAMID streamid, ULONG line, ULONG *pValue)
{
  mixerhandle *pHandle = (mixerhandle *)streamid;
  //int      ret;

  if(pHandle == NULL || pHandle->magic != MAGIC_MIXER_ALSA32) {
    DebugInt3();
    return OSSERR_INVALID_STREAMID;
  }
  //set operation to non-blocking
  pHandle->file.f_flags = O_NONBLOCK;

  return OSSERR_NOT_SUPPORTED;
}
//******************************************************************************
//******************************************************************************
ULONG OSSToALSAVolume(ULONG OSSVolIdx)
{
  switch(OSSVolIdx) {
  case OSS_MIXER_VOLUME:
    return OSS32_MIX_VOLUME_MASTER_FRONT;
#if 0
  case OSS_MIXER_VOLUME: //TODO:
    return OSS32_MIX_VOLUME_MASTER_REAR;
#endif
  case OSS_MIXER_PCM:
    return OSS32_MIX_VOLUME_PCM;
  case OSS_MIXER_SYNTH:
    return OSS32_MIX_VOLUME_MIDI;
  case OSS_MIXER_LINE:
    return OSS32_MIX_VOLUME_LINEIN;
  case OSS_MIXER_MIC:
    return OSS32_MIX_VOLUME_MIC;
  case OSS_MIXER_CD:
    return OSS32_MIX_VOLUME_CD;
  case OSS_MIXER_DIGITAL1:
    return OSS32_MIX_VOLUME_SPDIF;
  case OSS_MIXER_VIDEO:
    return OSS32_MIX_VOLUME_VIDEO;
  case OSS_MIXER_PCSPEAKER:
    return OSS32_MIX_VOLUME_PCSPEAKER;
  case OSS_MIXER_PHONEOUT:
    return OSS32_MIX_VOLUME_PHONE;
  case OSS_MIXER_IGAIN:
    return OSS32_MIX_VOLUME_CAPTURE;
  case OSS_MIXER_TREBLE:
    return OSS32_MIX_LEVEL_TREBLE;
  case OSS_MIXER_BASS:
    return OSS32_MIX_LEVEL_BASS;
  case OSS_MIXER_HEADPHONE:
    return OSS32_MIX_VOLUME_HEADPHONE;
  case OSS_MIXER_SPEAKER:
    return OSS32_MIX_VOLUME_SPEAKER;
  case OSS_MIXER_LINE1:
    return OSS32_MIX_VOLUME_AUX;
  }
  return -1;
}
//******************************************************************************
//******************************************************************************
OSSRET OSS32_MixQueryCaps(OSSSTREAMID streamid, POSS32_MIXCAPS pCaps)
{
  mixerhandle *pHandle = (mixerhandle *)streamid;
  int i;

  if(pHandle == NULL || pHandle->magic != MAGIC_MIXER_ALSA32) {
    DebugInt3();
    return OSSERR_INVALID_STREAMID;
  }

  strncpy(pCaps->name, pHandle->info.mixername, sizeof(pCaps->name));
  pCaps->fuCtrlCaps = 0;
  pCaps->fuRecCaps  = 0;

  for(i=0;i<OSS_MIXER_NRDEVICES;i++)
  {
    if(pHandle->controls[i].idxVolume != -1) {
      ULONG volidx = OSSToALSAVolume(i);
      if(volidx != -1)
        pCaps->fuCtrlCaps |= OSS32_MIX_FLAG(volidx);
    }
  }

  //if it has a capture source control or the card has capture route switches,
  //then we support intput source selection
  if(pHandle->controls[OSS_MIXER_IGAIN].idxCustom != -1 ||
     pHandle->rectype == RECTYPE_SWITCH)
  {
    pCaps->fuCtrlCaps |= OSS32_MIX_FLAG(OSS32_MIX_INPUTSRC);
    pCaps->fuRecCaps   = pHandle->reccaps;
  }
  return OSSERR_SUCCESS;
}
//******************************************************************************
//******************************************************************************
OSSRET OSS32_MixQueryName(ULONG deviceid, char *pszMixerName, ULONG cbMixerName)
{
  mixerhandle *pHandle = NULL;
  int      ret;
  //int i, j;

  if(alsa_fops == NULL)
    return OSSERR_NO_DEVICE_AVAILABLE;

  pHandle = kmalloc(sizeof(mixerhandle), GFP_KERNEL);
  if(pHandle == NULL) {
    ret = OSSERR_OUT_OF_MEMORY;
    goto failure;
  }
  memset(pHandle, 0, sizeof(mixerhandle));

  //set operation to non-blocking
  pHandle->file.f_flags = O_NONBLOCK;

  //setup pointers in file structure (used internally by ALSA)
  pHandle->file.f_dentry      = &pHandle->d_entry;
  pHandle->file.f_dentry->d_inode = &pHandle->inode;

  pHandle->file.f_mode  = FMODE_WRITE;
  pHandle->inode.i_rdev = SNDRV_MINOR(deviceid, SNDRV_MINOR_CONTROL);

  ret = alsa_fops->open(&pHandle->inode, &pHandle->file);
  if(ret) {
    goto failure;
  }
  //retrieve mixer information
  ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file,
                  SNDRV_CTL_IOCTL_CARD_INFO,
                  (ULONG)&pHandle->info);
  if(ret) {
    goto failure;
  }

  strncpy(pszMixerName, pHandle->info.mixername, cbMixerName);

  pHandle->file.f_flags = O_NONBLOCK;
  ret = pHandle->file.f_op->release(&pHandle->inode, &pHandle->file);
  if(ret) {
    goto failure;
  }
  kfree(pHandle);
  return OSSERR_SUCCESS;

failure:
  if(pHandle) {
    kfree(pHandle);
  }
  DebugInt3();
  return OSSERR_OUT_OF_MEMORY;
}
//******************************************************************************
//******************************************************************************
OSSRET OSS32_QueryNames(ULONG deviceid, char *pszDeviceName, ULONG cbDeviceName,
            char *pszMixerName, ULONG cbMixerName, BOOL fLongName)
{
  mixerhandle *pHandle = NULL;
  int      ret;
  //int i, j;

  if(alsa_fops == NULL) {
    ret = OSSERR_NO_DEVICE_AVAILABLE;
    printk("ret = OSSERR_NO_DEVICE_AVAILABLE\n");
    goto failure;
  }

  pHandle = kmalloc(sizeof(mixerhandle), GFP_KERNEL);
  if(pHandle == NULL) {
    ret = OSSERR_OUT_OF_MEMORY;
    goto failure;
  }
  memset(pHandle, 0, sizeof(mixerhandle));

  //set operation to non-blocking
  pHandle->file.f_flags = O_NONBLOCK;

  //setup pointers in file structure (used internally by ALSA)
  pHandle->file.f_dentry      = &pHandle->d_entry;
  pHandle->file.f_dentry->d_inode = &pHandle->inode;

  pHandle->file.f_mode  = FMODE_WRITE;
  pHandle->inode.i_rdev = SNDRV_MINOR(deviceid, SNDRV_MINOR_CONTROL);

  ret = alsa_fops->open(&pHandle->inode, &pHandle->file);
  if(ret) {
    printk("open ret = %i\n", ret);
    goto failure;
  }
  //retrieve mixer information
  ret = pHandle->file.f_op->unlocked_ioctl(&pHandle->file,
                  SNDRV_CTL_IOCTL_CARD_INFO,
                  (ULONG)&pHandle->info);
  if(ret) {
    printk("ioctl ret = %i\n", ret);
    goto failure;
  }

  if(pszDeviceName) {
    if(fLongName == TRUE) {
       strncpy(pszDeviceName, pHandle->info.longname, cbDeviceName);
    }
    else strncpy(pszDeviceName, pHandle->info.name, cbDeviceName);
  }
  if(pszMixerName) {
    strncpy(pszMixerName, pHandle->info.mixername, cbMixerName);
  }

//    printk("Card: %s with mixer %s\n",pszDeviceName, pszMixerName);

  pHandle->file.f_flags = O_NONBLOCK;
  ret = pHandle->file.f_op->release(&pHandle->inode, &pHandle->file);
  if(ret) {
    printk("release ret = %i\n", ret);
    goto failure;
  }
  kfree(pHandle);
  return OSSERR_SUCCESS;

failure:
  if(pHandle) {
    kfree(pHandle);
  }
  DebugInt3();
  printk("OSS32_QueryNames() ret = %i\n", ret);
  return OSSERR_OUT_OF_MEMORY;
}
//******************************************************************************
//******************************************************************************