* autoload.cc: Add winmm functions needed by fhandler_dsp.cc.

* fhandler_dsp.cc: New file.  Implements OSS like /dev/dsp.
* include/sys/soundcard.h: New file.  User land includes for OSS /dev/dsp.
* fhandler.h: Add new class fhandler_dev_dsp and a FH_OSS_DSP definition.
* dtable.cc (dtable::build_fhandler): Allow creation of the /dev/dsp device.
* path.cc (windows_device_names): Add /dev/dsp into list of device names.
* Makefile.in (DLL_OFILES): Add fhandler_dsp.o.

8 files changed, 1979 insertions, 11 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index e42973579..76dbfd17a 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,20 @@
+Sun Apr 15 23:23:29 2001  Christopher Faylor <cgf@cygnus.com>
+
+	* autoload.cc: Add winmm functions needed by fhandler_dsp.cc.
+
+Sun Apr 15 22:53:52 2001  Andy Younger <andylyounger@hotmail.com>
+
+	* fhandler_dsp.cc: New file.  Implements OSS like /dev/dsp.
+	* include/sys/soundcard.h: New file.  User land includes for OSS
+	/dev/dsp.
+	* fhandler.h: Add new class fhandler_dev_dsp and a FH_OSS_DSP
+	definition.
+	* dtable.cc (dtable::build_fhandler): Allow creation of the /dev/dsp
+	device.
+	* path.cc (windows_device_names): Add /dev/dsp into list of device
+	names.
+	* Makefile.in (DLL_OFILES): Add fhandler_dsp.o.
+
 Sun Apr 15 16:36:27 2001  Christopher Faylor <cgf@cygnus.com>
 
 	* uname.c (uname): Default n in in86 to 6 if Windows returns > 6.
diff --git a/winsup/cygwin/Makefile.in b/winsup/cygwin/Makefile.in
index 456c89426..438ff5f65 100644
--- a/winsup/cygwin/Makefile.in
+++ b/winsup/cygwin/Makefile.in
@@ -114,11 +114,10 @@ EXTRA_OFILES=$(bupdir1)/libiberty/random.o $(bupdir1)/libiberty/strsignal.o
 DLL_IMPORTS:=$(w32api_lib)/libkernel32.a
 
 DLL_OFILES:=assert.o autoload.o cygheap.o dcrt0.o debug.o delqueue.o dir.o \
-	dlfcn.o \
-	dll_init.o dtable.o environ.o  errno.o exceptions.o exec.o external.o \
-	fcntl.o fhandler.o fhandler_clipboard.o fhandler_console.o \
-	fhandler_floppy.o fhandler_mem.o fhandler_random.o fhandler_raw.o \
-	fhandler_serial.o fhandler_socket.o fhandler_tape.o \
+	dlfcn.o dll_init.o dtable.o environ.o  errno.o exceptions.o exec.o \
+	external.o fcntl.o fhandler.o fhandler_clipboard.o fhandler_console.o \
+	fhandler_dsp.o fhandler_floppy.o fhandler_mem.o fhandler_random.o \
+	fhandler_raw.o fhandler_serial.o fhandler_socket.o fhandler_tape.o \
 	fhandler_termios.o fhandler_tty.o fhandler_windows.o fhandler_zero.o \
 	fork.o glob.o grp.o heap.o init.o ioctl.o localtime.o malloc.o \
 	miscfuncs.o mmap.o net.o ntea.o passwd.o path.o pinfo.o pipe.o poll.o \
@@ -190,7 +189,7 @@ new-$(LIB_NAME): $(LIB_NAME)
 
 new-$(DLL_NAME): $(DLL_OFILES) $(DEF_FILE) $(DLL_IMPORTS) $(LIBC) $(LIBM) Makefile winver_stamp
 	$(CXX) $(CXXFLAGS) -nostdlib -Wl,-shared -o $@ -e $(DLL_ENTRY) $(DEF_FILE) $(DLL_OFILES) version.o \
-	winver.o $(DLL_IMPORTS) $(MALLOC_OBJ) $(LIBM) $(LIBC) -lstdc++ -lshell32 -luuid -lgcc
+	winver.o $(DLL_IMPORTS) $(MALLOC_OBJ) $(LIBM) $(LIBC) -lstdc++ -lgcc -lshell32 -luuid
 
 dll_ofiles: $(DLL_OFILES)
 
diff --git a/winsup/cygwin/autoload.cc b/winsup/cygwin/autoload.cc
index 831414b6d..8a99ea5d7 100644
--- a/winsup/cygwin/autoload.cc
+++ b/winsup/cygwin/autoload.cc
@@ -102,6 +102,8 @@ LoadDLLinitfunc (netapi32)
     netapi32_handle = h;
   else if (! netapi32_handle)
     api_fatal ("could not load netapi32.dll. %d", GetLastError ());
+
+  InterlockedDecrement (&here);
   return 0;
 }
 
@@ -228,19 +230,38 @@ LoadDLLinitfunc (ole32)
 
 LoadDLLinitfunc (kernel32)
 {
-  extern void wsock_init ();
   HANDLE h;
 
   if ((h = LoadLibrary ("kernel32.dll")) != NULL)
     kernel32_handle = h;
   else if (!kernel32_handle)
-    api_fatal ("could not load wsock32.dll.  Is TCP/IP installed?");
+    api_fatal ("could not load kernel32.dll, %E");
   else
     return 0;		/* Already done by another thread? */
 
   return 0;
 }
 
+LoadDLLinitfunc (winmm)
+{
+  HANDLE h;
+  static NO_COPY LONG here = -1L;
+
+  while (InterlockedIncrement (&here))
+    {
+      InterlockedDecrement (&here);
+      Sleep (0);
+    }
+
+  if ((h = LoadLibrary ("winmm.dll")) != NULL)
+    winmm_handle = h;
+  else if (! winmm_handle)
+    api_fatal ("could not load winmm.dll. %d", GetLastError ());
+
+  InterlockedDecrement (&here);
+  return 0;
+}
+
 static void __stdcall dummy_autoload (void) __attribute__ ((unused));
 static void __stdcall
 dummy_autoload (void)
@@ -396,5 +417,16 @@ LoadDLLfunc (CoCreateInstance, 20, ole32)
 
 LoadDLLinit (kernel32)
 LoadDLLfuncEx (SignalObjectAndWait, 16, kernel32, 1)
+
+LoadDLLinit (winmm)
+LoadDLLfuncEx (waveOutGetNumDevs, 0, winmm, 1)
+LoadDLLfuncEx (waveOutOpen, 24, winmm, 1)
+LoadDLLfuncEx (waveOutReset, 4, winmm, 1)
+LoadDLLfuncEx (waveOutClose, 4, winmm, 1)
+LoadDLLfuncEx (waveOutGetVolume, 8, winmm, 1)
+LoadDLLfuncEx (waveOutSetVolume, 8, winmm, 1)
+LoadDLLfuncEx (waveOutUnprepareHeader, 12, winmm, 1)
+LoadDLLfuncEx (waveOutPrepareHeader, 12, winmm, 1)
+LoadDLLfuncEx (waveOutWrite, 12, winmm, 1)
 }
 }
diff --git a/winsup/cygwin/dtable.cc b/winsup/cygwin/dtable.cc
index 4c39035f9..b67949faa 100644
--- a/winsup/cygwin/dtable.cc
+++ b/winsup/cygwin/dtable.cc
@@ -316,6 +316,9 @@ dtable::build_fhandler (int fd, DWORD dev, const char *name, int unit)
       case FH_CLIPBOARD:
 	fh = new (buf) fhandler_dev_clipboard (name);
 	break;
+      case FH_OSS_DSP:
+	fh = new (buf) fhandler_dev_dsp (name);
+	break;
       default:
 	/* FIXME - this could recurse forever */
 	return build_fhandler (fd, name, NULL);
diff --git a/winsup/cygwin/fhandler.h b/winsup/cygwin/fhandler.h
index 32ccacc75..f99b0938e 100644
--- a/winsup/cygwin/fhandler.h
+++ b/winsup/cygwin/fhandler.h
@@ -88,7 +88,7 @@ enum
   FH_PIPEW   = 0x0000000a,	/* write end of a pipe */
   FH_SOCKET  = 0x0000000b,	/* is a socket */
   FH_WINDOWS = 0x0000000c,	/* is a window */
-
+  FH_OSS_DSP = 0x0000000d,	/* is the dsp audio device */
   FH_SLOW    = 0x00000010,	/* "slow" device if below this */
 
   /* Fast devices */
@@ -941,6 +941,29 @@ public:
   int ready_for_read (int fd, DWORD howlong, int ignra);
 };
 
+class fhandler_dev_dsp : public fhandler_base
+{
+private:
+  int audioformat_;
+  int audiofreq_;
+  int audiobits_;
+  int audiochannels_;
+  bool setupwav(const char *pData, int nBytes);
+  
+public:
+  fhandler_dev_dsp (const char *name = 0);
+  ~fhandler_dev_dsp();
+
+  int open (const char *path, int flags, mode_t mode = 0);
+  int write (const void *ptr, size_t len);
+  int read (void *ptr, size_t len);
+  int ioctl (unsigned int cmd, void *);
+  off_t lseek (off_t, int);
+  int close (void);
+  int dup (fhandler_base * child);
+  void dump (void);
+};
+
 #if 0
 /* You can't do this */
 typedef union
diff --git a/winsup/cygwin/fhandler_dsp.cc b/winsup/cygwin/fhandler_dsp.cc
new file mode 100644
index 000000000..88cdd30b7
--- /dev/null
+++ b/winsup/cygwin/fhandler_dsp.cc
@@ -0,0 +1,604 @@
+/* fhandler_dev_dsp: code to emulate OSS sound model /dev/dsp
+
+   Copyright 2001 Red Hat, Inc
+
+   Written by Andy Younger (andy@snoogie.demon.co.uk)
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#include "winsup.h"
+#include <stdio.h>
+#include <errno.h>
+#include "cygerrno.h"
+#include "fhandler.h"
+#include <windows.h>
+#include <sys/soundcard.h>
+#include <sys/fcntl.h>
+#include <mmsystem.h>
+
+//------------------------------------------------------------------------
+// Simple encapsulation of the win32 audio device.
+// 
+static void CALLBACK wave_callback(HWAVE hWave, UINT msg, DWORD instance, 
+			           DWORD param1, DWORD param2);
+class Audio
+{
+public:
+  enum { MAX_BLOCKS = 8, BLOCK_SIZE = 16384 };
+
+  Audio ();
+  ~Audio ();
+  
+  bool open (int rate, int bits, int channels, bool bCallback = false);
+  void close ();
+  int getvolume ();
+  void setvolume (int newVolume);
+  bool write (const void *pSampleData, int nBytes);
+  int blocks ();
+  void callback_sampledone (void *pData);
+  
+  int numbytesoutput ();
+  
+private:
+  char *initialisebuffer ();
+  void waitforcallback ();
+  bool flush ();
+   
+  HWAVEOUT dev_;
+  volatile int nBlocksInQue_;
+  int nBytesWritten_;
+  char *buffer_;
+  int bufferIndex_;
+  CRITICAL_SECTION lock_;
+  char *freeblocks_[MAX_BLOCKS];
+
+  char bigwavebuffer_[MAX_BLOCKS * BLOCK_SIZE];
+};
+
+Audio::Audio()
+{
+  int size = BLOCK_SIZE + sizeof(WAVEHDR);
+  
+  InitializeCriticalSection(&lock_);
+  memset(freeblocks_, 0, sizeof(freeblocks_));
+  for (int i = 0; i < MAX_BLOCKS; i++)
+    {
+      char *pBuffer = &bigwavebuffer_[ i * size ];
+      memset(pBuffer, 0, size);
+      freeblocks_[i] = pBuffer;
+    }
+}
+
+Audio::~Audio()
+{
+  if (dev_)
+    close();
+  DeleteCriticalSection(&lock_);
+}
+
+bool 
+Audio::open(int rate, int bits, int channels, bool bCallback = false)
+{
+  WAVEFORMATEX format;
+  int nDevices = waveOutGetNumDevs();
+  
+  nBytesWritten_ = 0L;
+  bufferIndex_ = 0;
+  buffer_ = 0L;
+  debug_printf("number devices %d\n", nDevices); 
+  if (nDevices <= 0)
+    return false;
+  
+  debug_printf("trying to map device freq %d, bits %d, "
+	       "channels %d, callback %d\n", rate, bits, channels, 
+	       bCallback); 
+
+  int bytesperSample = bits / 8;
+  
+  memset(&format, 0, sizeof(format));
+  format.wFormatTag = WAVE_FORMAT_PCM;
+  format.wBitsPerSample = bits;
+  format.nChannels = channels;
+  format.nSamplesPerSec = rate;
+  format.nAvgBytesPerSec = format.nSamplesPerSec * format.nChannels * 
+			   bytesperSample;
+  format.nBlockAlign = format.nChannels * bytesperSample;  
+
+  nBlocksInQue_ = 0;
+  HRESULT res = waveOutOpen(&dev_, WAVE_MAPPER, &format, (DWORD)wave_callback,
+			    (DWORD)this, bCallback ? CALLBACK_FUNCTION : 0);
+  if (res == S_OK)
+    {
+      debug_printf("Sucessfully opened!");
+      return true;
+    }
+  else
+    {
+      debug_printf("failed to open");
+      return false;
+    }
+}
+
+void 
+Audio::close()
+{
+  if (dev_)
+    {	
+      flush();		// force out last block whatever size..	
+
+      while (blocks())	// block till finished..
+	waitforcallback();
+      
+      waveOutReset(dev_);
+      waveOutClose(dev_);
+      dev_ = 0L;
+    }
+  nBytesWritten_ = 0L;
+}
+
+int
+Audio::numbytesoutput()
+{
+  return nBytesWritten_;
+}
+
+int 
+Audio::getvolume()
+{
+  DWORD volume;
+  
+  waveOutGetVolume(dev_, &volume);
+  return ((volume >> 16) + (volume & 0xffff)) >> 1;    
+}
+
+void 
+Audio::setvolume(int newVolume)
+{
+  waveOutSetVolume(dev_, (newVolume<<16)|newVolume);    
+}
+
+char *
+Audio::initialisebuffer()
+{
+  EnterCriticalSection(&lock_);
+  WAVEHDR *pHeader = 0L;
+  for (int i = 0; i < MAX_BLOCKS; i++)
+    {
+      char *pData = freeblocks_[i];
+      if (pData)
+	{
+	  pHeader = (WAVEHDR *)pData;    
+	  if (pHeader->dwFlags & WHDR_DONE)
+	    {
+	      waveOutUnprepareHeader(dev_, pHeader, sizeof(WAVEHDR));   
+	    }	
+	  freeblocks_[i] = 0L;
+	  break;
+	}
+    }
+  LeaveCriticalSection(&lock_); 
+
+  if (pHeader)
+    {
+      memset(pHeader, 0, sizeof(WAVEHDR));
+      pHeader->dwBufferLength = BLOCK_SIZE;
+      pHeader->lpData = (LPSTR)(&pHeader[1]);
+      return (char *)pHeader->lpData;
+    }
+  return 0L;
+}
+
+bool 
+Audio::write(const void *pSampleData, int nBytes)
+{
+  // split up big blocks into smaller BLOCK_SIZE chunks
+  while (nBytes > BLOCK_SIZE)
+    {
+      write(pSampleData, BLOCK_SIZE);
+      nBytes -= BLOCK_SIZE;
+      pSampleData = (void *)((char *)pSampleData + BLOCK_SIZE);
+    }
+
+  // Block till next sound is flushed
+  if (blocks() == MAX_BLOCKS)
+      waitforcallback();
+
+  // Allocate new wave buffer if necessary
+  if (buffer_ == 0L)
+    {
+      buffer_ = initialisebuffer();
+      if (buffer_ == 0L)
+	return false;
+    }
+  
+
+  // Handle gathering blocks into larger buffer
+  int sizeleft = BLOCK_SIZE - bufferIndex_;
+  if (nBytes < sizeleft)
+    {
+      memcpy(&buffer_[bufferIndex_], pSampleData, nBytes);
+      bufferIndex_ += nBytes;
+      nBytesWritten_ += nBytes;
+      return true;
+    }
+  
+  // flushing when we reach our limit of BLOCK_SIZE 
+  memcpy(&buffer_[bufferIndex_], pSampleData, sizeleft);
+  bufferIndex_ += sizeleft;
+  nBytesWritten_ += sizeleft;	
+  flush();
+      
+  // change pointer to rest of sample, and size accordingly
+  pSampleData = (void *)((char *)pSampleData + sizeleft);
+  nBytes -= sizeleft;	
+
+  // if we still have some sample left over write it out
+  if (nBytes)
+    return write(pSampleData, nBytes);
+  
+  return true;
+}
+
+// return number of blocks back.
+int 
+Audio::blocks()
+{
+  EnterCriticalSection(&lock_);
+  int ret = nBlocksInQue_;
+  LeaveCriticalSection(&lock_);
+  return ret;
+}
+
+// This is called on an interupt so use locking.. Note nBlocksInQue_ is 
+// modified by it so we should wrap all references to it in locks.
+void 
+Audio::callback_sampledone(void *pData)
+{
+  EnterCriticalSection(&lock_);
+  
+  nBlocksInQue_--; 
+  for (int i = 0; i < MAX_BLOCKS; i++)
+    if (!freeblocks_[i])
+      {
+	freeblocks_[i] = (char *)pData;
+	break;
+      }
+  
+  LeaveCriticalSection(&lock_);  
+}
+
+void
+Audio::waitforcallback()
+{
+  int n = blocks();
+  if (!n)
+      return;
+  do
+    {
+      Sleep(250);
+    }
+  while (n == blocks());
+}
+
+bool
+Audio::flush()
+{
+  if (!buffer_)
+      return false;
+  
+  // Send internal buffer out to the soundcard
+  WAVEHDR *pHeader = ((WAVEHDR *)buffer_) - 1;
+  pHeader->dwBufferLength = bufferIndex_;
+  if (waveOutPrepareHeader(dev_, pHeader, sizeof(WAVEHDR)) == S_OK &&
+      waveOutWrite(dev_, pHeader, sizeof (WAVEHDR)) == S_OK)
+    {	    
+      EnterCriticalSection(&lock_);
+      nBlocksInQue_++;
+      LeaveCriticalSection(&lock_);
+      bufferIndex_ = 0;
+      buffer_ = 0L;
+      return true;
+    }
+  else
+    {
+      EnterCriticalSection(&lock_);
+      for (int i = 0; i < MAX_BLOCKS; i++)
+	if (!freeblocks_[i])
+	{
+	  freeblocks_[i] = (char *)pHeader;
+	  break;
+        }
+      LeaveCriticalSection(&lock_);
+    }
+  return false;
+}
+
+//------------------------------------------------------------------------
+// Call back routine
+static void CALLBACK 
+wave_callback(HWAVE hWave, UINT msg, DWORD instance, DWORD param1, DWORD param2)
+{
+  if (msg == WOM_DONE)
+    {
+      Audio *ptr = (Audio *)instance;
+      ptr->callback_sampledone((void *)param1);
+    }
+}
+  
+//------------------------------------------------------------------------
+// /dev/dsp handler
+static Audio s_audio;	      // static instance of the Audio handler
+
+//------------------------------------------------------------------------
+// wav file detection..
+#pragma pack(1)
+struct wavchunk
+{ 
+  char id[4];
+  unsigned int len;
+};
+struct wavformat
+{
+  unsigned short wFormatTag;
+  unsigned short wChannels;
+  unsigned int dwSamplesPerSec;
+  unsigned int dwAvgBytesPerSec;
+  unsigned short wBlockAlign;
+  unsigned short wBitsPerSample;
+};
+#pragma pack()
+
+bool
+fhandler_dev_dsp::setupwav(const char *pData, int nBytes)
+{
+  int len;
+  const char *end = pData + nBytes;
+
+  if (!(pData[0] == 'R' && pData[1] == 'I' && 
+	pData[2] == 'F' && pData[3] == 'F'))
+    return false;
+  if (!(pData[8]  == 'W' && pData[9]  == 'A' && 
+        pData[10] == 'V' && pData[11] == 'E'))
+    return false;
+  
+  len = *(int *)&pData[4];  
+  pData += 12;
+  while (len && pData < end)
+    { 
+      wavchunk *pChunk = (wavchunk *)pData;
+      int blklen = pChunk->len;	      
+      if (pChunk->id[0] == 'f' && pChunk->id[1] == 'm' && 
+	  pChunk->id[2] == 't' && pChunk->id[3] == ' ')
+	{
+	  wavformat *format = (wavformat *)(pChunk+1);
+	  if ((char *)(format+1) > end)
+	    return false;
+      
+	  // Open up audio device with correct frequency for wav file
+	  // 
+	  // FIXME: should through away all the header & not output
+	  // it to the soundcard.
+	  s_audio.close();
+	  if (s_audio.open(format->dwSamplesPerSec, format->wBitsPerSample,
+			   format->wChannels) == false)
+	    {
+	      s_audio.open(audiofreq_, audiobits_, audiochannels_);
+	    }
+	  else
+	    {
+	      audiofreq_ = format->dwSamplesPerSec;
+	      audiobits_ = format->wBitsPerSample;
+	      audiochannels_ = format->wChannels;
+	    }
+	  return true;
+	}
+
+      pData += blklen + sizeof(wavchunk);
+    }
+  return false;
+}
+
+//------------------------------------------------------------------------
+fhandler_dev_dsp::fhandler_dev_dsp (const char *name)
+  : fhandler_base (FH_OSS_DSP, name)
+{
+  set_cb (sizeof *this);     
+}
+
+fhandler_dev_dsp::~fhandler_dev_dsp()
+{
+}
+
+int
+fhandler_dev_dsp::open (const char *path, int flags, mode_t mode = 0)
+{
+  // currently we only support writing    
+  if ((flags & (O_WRONLY|O_RDONLY|O_RDWR)) != O_WRONLY)
+    return 0;
+  
+  set_flags(flags);
+
+  // Work out initial sample format & frequency
+  if (strcmp(path, "/dev/dsp") == 0L)
+    {
+      // dev/dsp defaults
+      audioformat_ = AFMT_S8;
+      audiofreq_ = 8000;
+      audiobits_ = 8;
+      audiochannels_ = 1;
+    }
+
+  if (s_audio.open(audiofreq_, audiobits_, audiochannels_))
+    debug_printf("/dev/dsp: successfully opened\n"); 
+  else
+    debug_printf("/dev/dsp: failed to open\n");   
+  return 1;
+}
+
+int
+fhandler_dev_dsp::write (const void *ptr, size_t len)
+{
+  if (s_audio.numbytesoutput() == 0)
+    {
+      // check for wave file & setup frequencys properly if possible.
+      setupwav((const char *)ptr, len);
+ 
+      // Open audio device properly with callbacks.
+      s_audio.close();
+      if (!s_audio.open(audiofreq_, audiobits_, audiochannels_, true))
+        return 0;
+    }
+  
+  s_audio.write(ptr, len);
+  return len;
+}
+
+int
+fhandler_dev_dsp::read (void *ptr, size_t len)
+{
+  return len;
+}
+
+off_t
+fhandler_dev_dsp::lseek (off_t offset, int whence)
+{
+  return 0;
+}
+
+int
+fhandler_dev_dsp::close (void)
+{
+  s_audio.close();
+  return 0;
+}
+
+int
+fhandler_dev_dsp::dup (fhandler_base * child)
+{
+  fhandler_dev_dsp *fhc = (fhandler_dev_dsp *)child;
+
+  fhc->set_flags(get_flags());
+  fhc->audiochannels_ = audiochannels_;
+  fhc->audiobits_ = audiobits_;
+  fhc->audiofreq_ = audiofreq_;
+  fhc->audioformat_ = audioformat_;
+  return 0;
+}
+
+int 
+fhandler_dev_dsp::ioctl(unsigned int cmd, void *ptr)
+{
+  int *intptr = (int *)ptr;
+  switch (cmd)
+    {
+      #define CASE(a) case a : debug_printf("/dev/dsp: ioctl %s\n", #a); 
+      
+      CASE(SNDCTL_DSP_RESET)
+	  audioformat_ = AFMT_S8;
+	  audiofreq_ = 8000;
+	  audiobits_ = 8;
+	  audiochannels_ = 1;
+	  return 1;
+      
+      CASE(SNDCTL_DSP_GETBLKSIZE)
+	  *intptr = Audio::BLOCK_SIZE;
+	  break;
+
+      CASE(SNDCTL_DSP_SETFMT)	 
+	{
+	  int nBits = 0;
+	  if (*intptr == AFMT_S16_LE)
+	      nBits = 16;
+	  else if (*intptr == AFMT_S8)
+	      nBits = 8;	  
+	  if (nBits)
+	    {
+	      s_audio.close();
+	      if (s_audio.open(audiofreq_, nBits, audiochannels_) == true)
+		{
+		  audiobits_ = nBits;
+		  return 1;
+		}
+	      else
+		{
+		  s_audio.open(audiofreq_, audiobits_, audiochannels_);
+		  return -1;
+		}
+	    }
+	}  break;
+      
+      CASE(SNDCTL_DSP_SPEED)
+	  s_audio.close();
+	  if (s_audio.open(*intptr, audiobits_, audiochannels_) == true)
+	    {
+	      audiofreq_ = *intptr;
+	      return 1;
+	    }
+	  else
+	    {
+	      s_audio.open(audiofreq_, audiobits_, audiochannels_);
+	      return -1;
+	    }
+	  break;
+      
+      CASE(SNDCTL_DSP_STEREO)
+	{
+	  int nChannels = *intptr + 1;
+	  
+	  s_audio.close();
+	  if (s_audio.open(audiofreq_, audiobits_, nChannels) == true)
+	    {
+	      audiochannels_ = nChannels;
+	      return 1;
+	    }
+	  else
+	    {
+	      s_audio.open(audiofreq_, audiobits_, audiochannels_);
+	      return -1;
+	    }
+	} break;
+
+      CASE(SNDCTL_DSP_GETOSPACE)
+	{
+	  audio_buf_info *p = (audio_buf_info *)ptr;
+
+	  int nBlocks = s_audio.blocks();
+	  int leftblocks = ((Audio::MAX_BLOCKS - nBlocks)-1);
+	  if (leftblocks < 0) leftblocks = 0;
+	  if (leftblocks > 1)
+	    leftblocks = 1;
+	  int left = leftblocks * Audio::BLOCK_SIZE;
+	 
+	  p->fragments = leftblocks;
+	  p->fragstotal = Audio::MAX_BLOCKS;
+	  p->fragsize = Audio::BLOCK_SIZE;
+	  p->bytes = left;
+
+	  debug_printf("ptr: %p "
+		       "nblocks: %d "
+		       "leftblocks: %d "
+		       "left bytes: %d ", ptr, nBlocks, leftblocks, left);
+	  
+	  
+	  return 1;
+	} break;
+      
+      default:
+	debug_printf("/dev/dsp: ioctl not handled yet! FIXME:\n"); 
+	break;
+
+      #undef CASE
+    };
+  return -1;
+}
+
+void
+fhandler_dev_dsp::dump ()
+{
+  paranoid_printf("here, fhandler_dev_dsp");
+}
+
diff --git a/winsup/cygwin/include/sys/soundcard.h b/winsup/cygwin/include/sys/soundcard.h
new file mode 100644
index 000000000..1a40bff61
--- /dev/null
+++ b/winsup/cygwin/include/sys/soundcard.h
@@ -0,0 +1,1287 @@
+#ifndef SOUNDCARD_H
+#define SOUNDCARD_H
+/*
+ * Copyright by Hannu Savolainen 1993-1997
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer. 2.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+/*
+ * OSS interface version. With versions earlier than 3.6 this value is
+ * an integer with value less than 361. In versions 3.6 and later
+ * it's a six digit hexadecimal value. For example value
+ * of 0x030600 represents OSS version 3.6.0.
+ * Use ioctl(fd, OSS_GETVERSION, &int) to get the version number of
+ * the currently active driver.
+ */
+#define SOUND_VERSION	0x030802
+#define OPEN_SOUND_SYSTEM
+
+/* In Linux we need to be prepared for cross compiling */
+//#include <linux/ioctl.h>
+
+/*
+ *	Supported card ID numbers (Should be somewhere else?)
+ */
+
+#define SNDCARD_ADLIB		1
+#define SNDCARD_SB		2
+#define SNDCARD_PAS		3
+#define SNDCARD_GUS		4
+#define SNDCARD_MPU401		5
+#define SNDCARD_SB16		6
+#define SNDCARD_SB16MIDI	7
+#define SNDCARD_UART6850	8
+#define SNDCARD_GUS16		9
+#define SNDCARD_MSS		10
+#define SNDCARD_PSS     	11
+#define SNDCARD_SSCAPE		12
+#define SNDCARD_PSS_MPU     	13
+#define SNDCARD_PSS_MSS     	14
+#define SNDCARD_SSCAPE_MSS	15
+#define SNDCARD_TRXPRO		16
+#define SNDCARD_TRXPRO_SB	17
+#define SNDCARD_TRXPRO_MPU	18
+#define SNDCARD_MAD16		19
+#define SNDCARD_MAD16_MPU	20
+#define SNDCARD_CS4232		21
+#define SNDCARD_CS4232_MPU	22
+#define SNDCARD_MAUI		23
+#define SNDCARD_PSEUDO_MSS	24
+#define SNDCARD_GUSPNP		25
+#define SNDCARD_UART401		26
+/* Sound card numbers 27 to N are reserved. Don't add more numbers here. */
+
+/***********************************
+ * IOCTL Commands for /dev/sequencer
+ */
+
+#ifndef _SIOWR
+#if defined(_IOWR) && (defined(_AIX) || (!defined(sun) && !defined(sparc) && !defined(__sparc__) && !defined(__INCioctlh) && !defined(__Lynx__)))
+/* Use already defined ioctl defines if they exist (except with Sun or Sparc) */
+#define	SIOCPARM_MASK	IOCPARM_MASK
+#define	SIOC_VOID	IOC_VOID
+#define	SIOC_OUT	IOC_OUT
+#define	SIOC_IN		IOC_IN
+#define	SIOC_INOUT	IOC_INOUT
+#define _SIOC_SIZE	_IOC_SIZE
+#define _SIOC_DIR	_IOC_DIR
+#define _SIOC_NONE	_IOC_NONE
+#define _SIOC_READ	_IOC_READ
+#define _SIOC_WRITE	_IOC_WRITE
+#define	_SIO		_IO
+#define	_SIOR		_IOR
+#define	_SIOW		_IOW
+#define	_SIOWR		_IOWR
+#else
+
+/* Ioctl's have the command encoded in the lower word,
+ * and the size of any in or out parameters in the upper
+ * word.  The high 2 bits of the upper word are used
+ * to encode the in/out status of the parameter; for now
+ * we restrict parameters to at most 8191 bytes.
+ */
+/* #define	SIOCTYPE		(0xff<<8) */
+#define	SIOCPARM_MASK	0x1fff		/* parameters must be < 8192 bytes */
+#define	SIOC_VOID	0x00000000	/* no parameters */
+#define	SIOC_OUT	0x20000000	/* copy out parameters */
+#define	SIOC_IN		0x40000000	/* copy in parameters */
+#define	SIOC_INOUT	(SIOC_IN|SIOC_OUT)
+/* the 0x20000000 is so we can distinguish new ioctl's from old */
+#define	_SIO(x,y)	((int)(SIOC_VOID|(x<<8)|y))
+#define	_SIOR(x,y,t)	((int)(SIOC_OUT|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
+#define	_SIOW(x,y,t)	((int)(SIOC_IN|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
+/* this should be _SIORW, but stdio got there first */
+#define	_SIOWR(x,y,t)	((int)(SIOC_INOUT|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
+#define _SIOC_SIZE(x)	((x>>16)&SIOCPARM_MASK)	
+#define _SIOC_DIR(x)	(x & 0xf0000000)
+#define _SIOC_NONE	SIOC_VOID
+#define _SIOC_READ	SIOC_OUT
+#define _SIOC_WRITE	SIOC_IN
+#  endif /* _IOWR */
+#endif  /* !_SIOWR */
+
+#define SNDCTL_SEQ_RESET		_SIO  ('Q', 0)
+#define SNDCTL_SEQ_SYNC			_SIO  ('Q', 1)
+#define SNDCTL_SYNTH_INFO		_SIOWR('Q', 2, struct synth_info)
+#define SNDCTL_SEQ_CTRLRATE		_SIOWR('Q', 3, int)	/* Set/get timer resolution (HZ) */
+#define SNDCTL_SEQ_GETOUTCOUNT		_SIOR ('Q', 4, int)
+#define SNDCTL_SEQ_GETINCOUNT		_SIOR ('Q', 5, int)
+#define SNDCTL_SEQ_PERCMODE		_SIOW ('Q', 6, int)
+#define SNDCTL_FM_LOAD_INSTR		_SIOW ('Q', 7, struct sbi_instrument)	/* Obsolete. Don't use!!!!!! */
+#define SNDCTL_SEQ_TESTMIDI		_SIOW ('Q', 8, int)
+#define SNDCTL_SEQ_RESETSAMPLES		_SIOW ('Q', 9, int)
+#define SNDCTL_SEQ_NRSYNTHS		_SIOR ('Q',10, int)
+#define SNDCTL_SEQ_NRMIDIS		_SIOR ('Q',11, int)
+#define SNDCTL_MIDI_INFO		_SIOWR('Q',12, struct midi_info)
+#define SNDCTL_SEQ_THRESHOLD		_SIOW ('Q',13, int)
+#define SNDCTL_SYNTH_MEMAVL		_SIOWR('Q',14, int)	/* in=dev#, out=memsize */
+#define SNDCTL_FM_4OP_ENABLE		_SIOW ('Q',15, int)	/* in=dev# */
+#define SNDCTL_SEQ_PANIC		_SIO  ('Q',17)
+#define SNDCTL_SEQ_OUTOFBAND		_SIOW ('Q',18, struct seq_event_rec)
+#define SNDCTL_SEQ_GETTIME		_SIOR ('Q',19, int)
+#define SNDCTL_SYNTH_ID			_SIOWR('Q',20, struct synth_info)
+#define SNDCTL_SYNTH_CONTROL		_SIOWR('Q',21, struct synth_control)
+#define SNDCTL_SYNTH_REMOVESAMPLE	_SIOWR('Q',22, struct remove_sample)
+
+typedef struct synth_control
+{
+	int devno;	/* Synthesizer # */
+	char data[4000]; /* Device spesific command/data record */
+}synth_control;
+
+typedef struct remove_sample
+{
+	int devno;	/* Synthesizer # */
+	int bankno;	/* MIDI bank # (0=General MIDI) */
+	int instrno;	/* MIDI instrument number */
+} remove_sample;
+
+typedef struct seq_event_rec {
+		unsigned char arr[8];
+} seq_event_rec;
+
+#define SNDCTL_TMR_TIMEBASE		_SIOWR('T', 1, int)
+#define SNDCTL_TMR_START		_SIO  ('T', 2)
+#define SNDCTL_TMR_STOP			_SIO  ('T', 3)
+#define SNDCTL_TMR_CONTINUE		_SIO  ('T', 4)
+#define SNDCTL_TMR_TEMPO		_SIOWR('T', 5, int)
+#define SNDCTL_TMR_SOURCE		_SIOWR('T', 6, int)
+#	define TMR_INTERNAL		0x00000001
+#	define TMR_EXTERNAL		0x00000002
+#		define TMR_MODE_MIDI	0x00000010
+#		define TMR_MODE_FSK	0x00000020
+#		define TMR_MODE_CLS	0x00000040
+#		define TMR_MODE_SMPTE	0x00000080
+#define SNDCTL_TMR_METRONOME		_SIOW ('T', 7, int)
+#define SNDCTL_TMR_SELECT		_SIOW ('T', 8, int)
+
+/*
+ * Some big endian/little endian handling macros
+ */
+
+#if defined(_AIX) || defined(AIX) || defined(sparc) || defined(__sparc__) || defined(HPPA) || defined(PPC)
+/* Big endian machines */
+#  define _PATCHKEY(id) (0xfd00|id)
+#  define AFMT_S16_NE AFMT_S16_BE
+#else
+#  define _PATCHKEY(id) ((id<<8)|0xfd)
+#  define AFMT_S16_NE AFMT_S16_LE
+#endif
+
+/*
+ *	Sample loading mechanism for internal synthesizers (/dev/sequencer)
+ *	The following patch_info structure has been designed to support
+ *	Gravis UltraSound. It tries to be universal format for uploading
+ *	sample based patches but is probably too limited.
+ *
+ *      (PBD) As Hannu guessed, the GUS structure is too limited for 
+ *      the WaveFront, but this is the right place for a constant definition.
+ */
+
+struct patch_info {
+		unsigned short key;		/* Use WAVE_PATCH here */
+#define WAVE_PATCH	   _PATCHKEY(0x04)
+#define GUS_PATCH	   WAVE_PATCH
+#define WAVEFRONT_PATCH    _PATCHKEY(0x06)
+
+		short device_no;	/* Synthesizer number */
+		short instr_no;		/* Midi pgm# */
+
+		unsigned int mode;
+/*
+ * The least significant byte has the same format than the GUS .PAT
+ * files
+ */
+#define WAVE_16_BITS	0x01	/* bit 0 = 8 or 16 bit wave data. */
+#define WAVE_UNSIGNED	0x02	/* bit 1 = Signed - Unsigned data. */
+#define WAVE_LOOPING	0x04	/* bit 2 = looping enabled-1. */
+#define WAVE_BIDIR_LOOP	0x08	/* bit 3 = Set is bidirectional looping. */
+#define WAVE_LOOP_BACK	0x10	/* bit 4 = Set is looping backward. */
+#define WAVE_SUSTAIN_ON	0x20	/* bit 5 = Turn sustaining on. (Env. pts. 3)*/
+#define WAVE_ENVELOPES	0x40	/* bit 6 = Enable envelopes - 1 */
+#define WAVE_FAST_RELEASE 0x80	/* bit 7 = Shut off immediately after note off */
+				/* 	(use the env_rate/env_offs fields). */
+/* Linux specific bits */
+#define WAVE_VIBRATO	0x00010000	/* The vibrato info is valid */
+#define WAVE_TREMOLO	0x00020000	/* The tremolo info is valid */
+#define WAVE_SCALE	0x00040000	/* The scaling info is valid */
+#define WAVE_FRACTIONS	0x00080000	/* Fraction information is valid */
+/* Reserved bits */
+#define WAVE_ROM	0x40000000	/* For future use */
+#define WAVE_MULAW	0x20000000	/* For future use */
+/* Other bits must be zeroed */
+
+		int len;	/* Size of the wave data in bytes */
+		int loop_start, loop_end; /* Byte offsets from the beginning */
+
+/* 
+ * The base_freq and base_note fields are used when computing the
+ * playback speed for a note. The base_note defines the tone frequency
+ * which is heard if the sample is played using the base_freq as the
+ * playback speed.
+ *
+ * The low_note and high_note fields define the minimum and maximum note
+ * frequencies for which this sample is valid. It is possible to define
+ * more than one samples for an instrument number at the same time. The
+ * low_note and high_note fields are used to select the most suitable one.
+ *
+ * The fields base_note, high_note and low_note should contain
+ * the note frequency multiplied by 1000. For example value for the
+ * middle A is 440*1000.
+ */
+
+		unsigned int base_freq;
+		unsigned int base_note;
+		unsigned int high_note;
+		unsigned int low_note;
+		int panning;	/* -128=left, 127=right */
+		int detuning;
+
+/*	New fields introduced in version 1.99.5	*/
+
+       /* Envelope. Enabled by mode bit WAVE_ENVELOPES	*/
+		unsigned char	env_rate[ 6 ];	 /* GUS HW ramping rate */
+		unsigned char	env_offset[ 6 ]; /* 255 == 100% */
+
+	/* 
+	 * The tremolo, vibrato and scale info are not supported yet.
+	 * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
+	 * WAVE_SCALE
+	 */
+
+		unsigned char	tremolo_sweep;
+		unsigned char	tremolo_rate;
+		unsigned char	tremolo_depth;
+	
+		unsigned char	vibrato_sweep;
+		unsigned char	vibrato_rate;
+		unsigned char	vibrato_depth;
+
+		int		scale_frequency;
+		unsigned int	scale_factor;		/* from 0 to 2048 or 0 to 2 */
+	
+	        int		volume;
+		int		fractions;
+		int		reserved1;
+	        int		spare[2];
+		char data[1];	/* The waveform data starts here */
+	};
+
+struct sysex_info {
+		short key;		/* Use SYSEX_PATCH or MAUI_PATCH here */
+#define SYSEX_PATCH	_PATCHKEY(0x05)
+#define MAUI_PATCH	_PATCHKEY(0x06)
+		short device_no;	/* Synthesizer number */
+		int len;	/* Size of the sysex data in bytes */
+		unsigned char data[1];	/* Sysex data starts here */
+	};
+
+/*
+ * /dev/sequencer input events.
+ *
+ * The data written to the /dev/sequencer is a stream of events. Events
+ * are records of 4 or 8 bytes. The first byte defines the size. 
+ * Any number of events can be written with a write call. There
+ * is a set of macros for sending these events. Use these macros if you
+ * want to maximize portability of your program.
+ *
+ * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
+ * (All input events are currently 4 bytes long. Be prepared to support
+ * 8 byte events also. If you receive any event having first byte >= 128,
+ * it's a 8 byte event.
+ *
+ * The events are documented at the end of this file.
+ *
+ * Normal events (4 bytes)
+ * There is also a 8 byte version of most of the 4 byte events. The
+ * 8 byte one is recommended.
+ */
+#define SEQ_NOTEOFF		0
+#define SEQ_FMNOTEOFF		SEQ_NOTEOFF	/* Just old name */
+#define SEQ_NOTEON		1
+#define	SEQ_FMNOTEON		SEQ_NOTEON
+#define SEQ_WAIT		TMR_WAIT_ABS
+#define SEQ_PGMCHANGE		3
+#define SEQ_FMPGMCHANGE		SEQ_PGMCHANGE
+#define SEQ_SYNCTIMER		TMR_START
+#define SEQ_MIDIPUTC		5
+#define SEQ_DRUMON		6	/*** OBSOLETE ***/
+#define SEQ_DRUMOFF		7	/*** OBSOLETE ***/
+#define SEQ_ECHO		TMR_ECHO	/* For synching programs with output */
+#define SEQ_AFTERTOUCH		9
+#define SEQ_CONTROLLER		10
+
+/*******************************************
+ *	Midi controller numbers
+ *******************************************
+ * Controllers 0 to 31 (0x00 to 0x1f) and
+ * 32 to 63 (0x20 to 0x3f) are continuous
+ * controllers.
+ * In the MIDI 1.0 these controllers are sent using
+ * two messages. Controller numbers 0 to 31 are used
+ * to send the MSB and the controller numbers 32 to 63
+ * are for the LSB. Note that just 7 bits are used in MIDI bytes.
+ */
+
+#define	   CTL_BANK_SELECT		0x00
+#define	   CTL_MODWHEEL			0x01
+#define    CTL_BREATH			0x02
+/*		undefined		0x03 */
+#define    CTL_FOOT			0x04
+#define    CTL_PORTAMENTO_TIME		0x05
+#define    CTL_DATA_ENTRY		0x06
+#define    CTL_MAIN_VOLUME		0x07
+#define    CTL_BALANCE			0x08
+/*		undefined		0x09 */
+#define    CTL_PAN			0x0a
+#define    CTL_EXPRESSION		0x0b
+/*		undefined		0x0c */
+/*		undefined		0x0d */
+/*		undefined		0x0e */
+/*		undefined		0x0f */
+#define    CTL_GENERAL_PURPOSE1	0x10
+#define    CTL_GENERAL_PURPOSE2	0x11
+#define    CTL_GENERAL_PURPOSE3	0x12
+#define    CTL_GENERAL_PURPOSE4	0x13
+/*		undefined		0x14 - 0x1f */
+
+/*		undefined		0x20 */
+/* The controller numbers 0x21 to 0x3f are reserved for the */
+/* least significant bytes of the controllers 0x00 to 0x1f. */
+/* These controllers are not recognised by the driver. */
+
+/* Controllers 64 to 69 (0x40 to 0x45) are on/off switches. */
+/* 0=OFF and 127=ON (intermediate values are possible) */
+#define    CTL_DAMPER_PEDAL		0x40
+#define    CTL_SUSTAIN			0x40	/* Alias */
+#define    CTL_HOLD			0x40	/* Alias */
+#define    CTL_PORTAMENTO		0x41
+#define    CTL_SOSTENUTO		0x42
+#define    CTL_SOFT_PEDAL		0x43
+/*		undefined		0x44 */
+#define    CTL_HOLD2			0x45
+/*		undefined		0x46 - 0x4f */
+
+#define    CTL_GENERAL_PURPOSE5	0x50
+#define    CTL_GENERAL_PURPOSE6	0x51
+#define    CTL_GENERAL_PURPOSE7	0x52
+#define    CTL_GENERAL_PURPOSE8	0x53
+/*		undefined		0x54 - 0x5a */
+#define    CTL_EXT_EFF_DEPTH		0x5b
+#define    CTL_TREMOLO_DEPTH		0x5c
+#define    CTL_CHORUS_DEPTH		0x5d
+#define    CTL_DETUNE_DEPTH		0x5e
+#define    CTL_CELESTE_DEPTH		0x5e	/* Alias for the above one */
+#define    CTL_PHASER_DEPTH		0x5f
+#define    CTL_DATA_INCREMENT		0x60
+#define    CTL_DATA_DECREMENT		0x61
+#define    CTL_NONREG_PARM_NUM_LSB	0x62
+#define    CTL_NONREG_PARM_NUM_MSB	0x63
+#define    CTL_REGIST_PARM_NUM_LSB	0x64
+#define    CTL_REGIST_PARM_NUM_MSB	0x65
+/*		undefined		0x66 - 0x78 */
+/*		reserved		0x79 - 0x7f */
+
+/* Pseudo controllers (not midi compatible) */
+#define    CTRL_PITCH_BENDER		255
+#define    CTRL_PITCH_BENDER_RANGE	254
+#define    CTRL_EXPRESSION		253	/* Obsolete */
+#define    CTRL_MAIN_VOLUME		252	/* Obsolete */
+#define SEQ_BALANCE		11
+#define SEQ_VOLMODE             12
+
+/*
+ * Volume mode decides how volumes are used
+ */
+
+#define VOL_METHOD_ADAGIO	1
+#define VOL_METHOD_LINEAR	2
+
+/*
+ * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
+ *	 input events.
+ */
+
+/*
+ * Event codes 0xf0 to 0xfc are reserved for future extensions.
+ */
+
+#define SEQ_FULLSIZE		0xfd	/* Long events */
+/*
+ *	SEQ_FULLSIZE events are used for loading patches/samples to the
+ *	synthesizer devices. These events are passed directly to the driver
+ *	of the associated synthesizer device. There is no limit to the size
+ *	of the extended events. These events are not queued but executed
+ *	immediately when the write() is called (execution can take several
+ *	seconds of time). 
+ *
+ *	When a SEQ_FULLSIZE message is written to the device, it must
+ *	be written using exactly one write() call. Other events cannot
+ *	be mixed to the same write.
+ *	
+ *	For FM synths (YM3812/OPL3) use struct sbi_instrument and write it to the 
+ *	/dev/sequencer. Don't write other data together with the instrument structure
+ *	Set the key field of the structure to FM_PATCH. The device field is used to
+ *	route the patch to the corresponding device.
+ *
+ *	For wave table use struct patch_info. Initialize the key field
+ *      to WAVE_PATCH.
+ */
+#define SEQ_PRIVATE		0xfe	/* Low level HW dependent events (8 bytes) */
+#define SEQ_EXTENDED		0xff	/* Extended events (8 bytes) OBSOLETE */
+
+/*
+ * Record for FM patches
+ */
+
+typedef unsigned char sbi_instr_data[32];
+
+struct sbi_instrument {
+		unsigned short	key;	/* FM_PATCH or OPL3_PATCH */
+#define FM_PATCH	_PATCHKEY(0x01)
+#define OPL3_PATCH	_PATCHKEY(0x03)
+		short		device;		/*	Synth# (0-4)	*/
+		int 		channel;	/*	Program# to be initialized 	*/
+		sbi_instr_data	operators;	/*	Register settings for operator cells (.SBI format)	*/
+	};
+
+struct synth_info {	/* Read only */
+		char	name[30];
+		int	device;		/* 0-N. INITIALIZE BEFORE CALLING */
+		int	synth_type;
+#define SYNTH_TYPE_FM			0
+#define SYNTH_TYPE_SAMPLE		1
+#define SYNTH_TYPE_MIDI			2	/* Midi interface */
+
+		int	synth_subtype;
+#define FM_TYPE_ADLIB			0x00
+#define FM_TYPE_OPL3			0x01
+#define MIDI_TYPE_MPU401		0x401
+
+#define SAMPLE_TYPE_BASIC		0x10
+#define SAMPLE_TYPE_GUS			SAMPLE_TYPE_BASIC
+#define SAMPLE_TYPE_WAVEFRONT           0x11
+
+		int	perc_mode;	/* No longer supported */
+		int	nr_voices;
+		int	nr_drums;	/* Obsolete field */
+		int	instr_bank_size;
+		unsigned int	capabilities;	
+#define SYNTH_CAP_PERCMODE		0x00000001 /* No longer used */
+#define SYNTH_CAP_OPL3			0x00000002 /* Set if OPL3 supported */
+#define SYNTH_CAP_INPUT			0x00000004 /* Input (MIDI) device */
+		int	dummies[19];	/* Reserve space */
+	};
+
+struct sound_timer_info {
+		char name[32];
+		int caps;
+	};
+
+#define MIDI_CAP_MPU401		1		/* MPU-401 intelligent mode */
+
+struct midi_info {
+		char		name[30];
+		int		device;		/* 0-N. INITIALIZE BEFORE CALLING */
+		unsigned int	capabilities;	/* To be defined later */
+		int		dev_type;
+		int		dummies[18];	/* Reserve space */
+	};
+
+/********************************************
+ * ioctl commands for the /dev/midi##
+ */
+typedef struct {
+		unsigned char cmd;
+		char nr_args, nr_returns;
+		unsigned char data[30];
+	} mpu_command_rec;
+
+#define SNDCTL_MIDI_PRETIME		_SIOWR('m', 0, int)
+#define SNDCTL_MIDI_MPUMODE		_SIOWR('m', 1, int)
+#define SNDCTL_MIDI_MPUCMD		_SIOWR('m', 2, mpu_command_rec)
+
+/********************************************
+ * IOCTL commands for /dev/dsp and /dev/audio
+ */
+
+#define SNDCTL_DSP_RESET		_SIO  ('P', 0)
+#define SNDCTL_DSP_SYNC			_SIO  ('P', 1)
+#define SNDCTL_DSP_SPEED		_SIOWR('P', 2, int)
+#define SNDCTL_DSP_STEREO		_SIOWR('P', 3, int)
+#define SNDCTL_DSP_GETBLKSIZE		_SIOWR('P', 4, int)
+#define SNDCTL_DSP_SAMPLESIZE		SNDCTL_DSP_SETFMT
+#define SNDCTL_DSP_CHANNELS		_SIOWR('P', 6, int)
+#define SOUND_PCM_WRITE_CHANNELS	SNDCTL_DSP_CHANNELS
+#define SOUND_PCM_WRITE_FILTER		_SIOWR('P', 7, int)
+#define SNDCTL_DSP_POST			_SIO  ('P', 8)
+#define SNDCTL_DSP_SUBDIVIDE		_SIOWR('P', 9, int)
+#define SNDCTL_DSP_SETFRAGMENT		_SIOWR('P',10, int)
+
+/*	Audio data formats (Note! U8=8 and S16_LE=16 for compatibility) */
+#define SNDCTL_DSP_GETFMTS		_SIOR ('P',11, int) /* Returns a mask */
+#define SNDCTL_DSP_SETFMT		_SIOWR('P',5, int) /* Selects ONE fmt*/
+#	define AFMT_QUERY		0x00000000	/* Return current fmt */
+#	define AFMT_MU_LAW		0x00000001
+#	define AFMT_A_LAW		0x00000002
+#	define AFMT_IMA_ADPCM		0x00000004
+#	define AFMT_U8			0x00000008
+#	define AFMT_S16_LE		0x00000010	/* Little endian signed 16*/
+#	define AFMT_S16_BE		0x00000020	/* Big endian signed 16 */
+#	define AFMT_S8			0x00000040
+#	define AFMT_U16_LE		0x00000080	/* Little endian U16 */
+#	define AFMT_U16_BE		0x00000100	/* Big endian U16 */
+#	define AFMT_MPEG		0x00000200	/* MPEG (2) audio */
+#	define AFMT_AC3		0x00000400	/* Dolby Digital AC3 */
+
+/*
+ * Buffer status queries.
+ */
+typedef struct audio_buf_info {
+			int fragments;	/* # of available fragments (partially usend ones not counted) */
+			int fragstotal;	/* Total # of fragments allocated */
+			int fragsize;	/* Size of a fragment in bytes */
+
+			int bytes;	/* Available space in bytes (includes partially used fragments) */
+			/* Note! 'bytes' could be more than fragments*fragsize */
+		} audio_buf_info;
+
+#define SNDCTL_DSP_GETOSPACE		_SIOR ('P',12, audio_buf_info)
+#define SNDCTL_DSP_GETISPACE		_SIOR ('P',13, audio_buf_info)
+#define SNDCTL_DSP_NONBLOCK		_SIO  ('P',14)
+#define SNDCTL_DSP_GETCAPS		_SIOR ('P',15, int)
+#	define DSP_CAP_REVISION		0x000000ff	/* Bits for revision level (0 to 255) */
+#	define DSP_CAP_DUPLEX		0x00000100	/* Full duplex record/playback */
+#	define DSP_CAP_REALTIME		0x00000200	/* Real time capability */
+#	define DSP_CAP_BATCH		0x00000400	/* Device has some kind of */
+							/* internal buffers which may */
+							/* cause some delays and */
+							/* decrease precision of timing */
+#	define DSP_CAP_COPROC		0x00000800	/* Has a coprocessor */
+							/* Sometimes it's a DSP */
+							/* but usually not */
+#	define DSP_CAP_TRIGGER		0x00001000	/* Supports SETTRIGGER */
+#	define DSP_CAP_MMAP		0x00002000	/* Supports mmap() */
+#	define DSP_CAP_MULTI		0x00004000	/* support multiple open */
+#	define DSP_CAP_BIND		0x00008000	/* channel binding to front/rear/cneter/lfe */
+
+
+#define SNDCTL_DSP_GETTRIGGER		_SIOR ('P',16, int)
+#define SNDCTL_DSP_SETTRIGGER		_SIOW ('P',16, int)
+#	define PCM_ENABLE_INPUT		0x00000001
+#	define PCM_ENABLE_OUTPUT		0x00000002
+
+typedef struct count_info {
+		int bytes;	/* Total # of bytes processed */
+		int blocks;	/* # of fragment transitions since last time */
+		int ptr;	/* Current DMA pointer value */
+	} count_info;
+
+#define SNDCTL_DSP_GETIPTR		_SIOR ('P',17, count_info)
+#define SNDCTL_DSP_GETOPTR		_SIOR ('P',18, count_info)
+
+typedef struct buffmem_desc {
+		unsigned *buffer;
+		int size;
+	} buffmem_desc;
+#define SNDCTL_DSP_MAPINBUF		_SIOR ('P', 19, buffmem_desc)
+#define SNDCTL_DSP_MAPOUTBUF		_SIOR ('P', 20, buffmem_desc)
+#define SNDCTL_DSP_SETSYNCRO		_SIO  ('P', 21)
+#define SNDCTL_DSP_SETDUPLEX		_SIO  ('P', 22)
+#define SNDCTL_DSP_GETODELAY		_SIOR ('P', 23, int)
+
+#define SNDCTL_DSP_GETCHANNELMASK		_SIOWR('P', 64, int)
+#define SNDCTL_DSP_BIND_CHANNEL		_SIOWR('P', 65, int)
+#	define DSP_BIND_QUERY		0x00000000
+#	define DSP_BIND_FRONT		0x00000001
+#	define DSP_BIND_SURR		0x00000002
+#	define DSP_BIND_CENTER_LFE	0x00000004
+#	define DSP_BIND_HANDSET		0x00000008
+#	define DSP_BIND_MIC		0x00000010
+#	define DSP_BIND_MODEM1		0x00000020
+#	define DSP_BIND_MODEM2		0x00000040
+#	define DSP_BIND_I2S		0x00000080
+#	define DSP_BIND_SPDIF		0x00000100
+
+/*
+ * Application's profile defines the way how playback underrun situations should be handled.
+ * 
+ *	APF_NORMAL (the default) and APF_NETWORK make the driver to cleanup the
+ *	playback buffer whenever an underrun occurs. This consumes some time
+ *	prevents looping the existing buffer.
+ *	APF_CPUINTENS is intended to be set by CPU intensive applications which
+ *	are likely to run out of time occasionally. In this mode the buffer cleanup is
+ *	disabled which saves CPU time but also let's the previous buffer content to
+ *	be played during the "pause" after the underrun.
+ */
+#define SNDCTL_DSP_PROFILE		_SIOW ('P', 23, int)
+#define	  APF_NORMAL	0	/* Normal applications */
+#define	  APF_NETWORK	1	/* Underruns probably caused by an "external" delay */
+#define   APF_CPUINTENS 2	/* Underruns probably caused by "overheating" the CPU */
+
+#define SOUND_PCM_READ_RATE		_SIOR ('P', 2, int)
+#define SOUND_PCM_READ_CHANNELS		_SIOR ('P', 6, int)
+#define SOUND_PCM_READ_BITS		_SIOR ('P', 5, int)
+#define SOUND_PCM_READ_FILTER		_SIOR ('P', 7, int)
+
+/* Some alias names */
+#define SOUND_PCM_WRITE_BITS		SNDCTL_DSP_SETFMT
+#define SOUND_PCM_WRITE_RATE		SNDCTL_DSP_SPEED
+#define SOUND_PCM_POST			SNDCTL_DSP_POST
+#define SOUND_PCM_RESET			SNDCTL_DSP_RESET
+#define SOUND_PCM_SYNC			SNDCTL_DSP_SYNC
+#define SOUND_PCM_SUBDIVIDE		SNDCTL_DSP_SUBDIVIDE
+#define SOUND_PCM_SETFRAGMENT		SNDCTL_DSP_SETFRAGMENT
+#define SOUND_PCM_GETFMTS		SNDCTL_DSP_GETFMTS
+#define SOUND_PCM_SETFMT		SNDCTL_DSP_SETFMT
+#define SOUND_PCM_GETOSPACE		SNDCTL_DSP_GETOSPACE
+#define SOUND_PCM_GETISPACE		SNDCTL_DSP_GETISPACE
+#define SOUND_PCM_NONBLOCK		SNDCTL_DSP_NONBLOCK
+#define SOUND_PCM_GETCAPS		SNDCTL_DSP_GETCAPS
+#define SOUND_PCM_GETTRIGGER		SNDCTL_DSP_GETTRIGGER
+#define SOUND_PCM_SETTRIGGER		SNDCTL_DSP_SETTRIGGER
+#define SOUND_PCM_SETSYNCRO		SNDCTL_DSP_SETSYNCRO
+#define SOUND_PCM_GETIPTR		SNDCTL_DSP_GETIPTR
+#define SOUND_PCM_GETOPTR		SNDCTL_DSP_GETOPTR
+#define SOUND_PCM_MAPINBUF		SNDCTL_DSP_MAPINBUF
+#define SOUND_PCM_MAPOUTBUF		SNDCTL_DSP_MAPOUTBUF
+
+/*
+ * ioctl calls to be used in communication with coprocessors and
+ * DSP chips.
+ */
+
+typedef struct copr_buffer {
+		int command;	/* Set to 0 if not used */
+		int flags;
+#define CPF_NONE		0x0000
+#define CPF_FIRST		0x0001	/* First block */
+#define CPF_LAST		0x0002	/* Last block */
+		int len;
+		int offs;	/* If required by the device (0 if not used) */
+
+		unsigned char data[4000]; /* NOTE! 4000 is not 4k */
+	} copr_buffer;
+
+typedef struct copr_debug_buf {
+		int command;	/* Used internally. Set to 0 */
+		int parm1;
+		int parm2;
+		int flags;	
+		int len;	/* Length of data in bytes */
+	} copr_debug_buf;
+
+typedef struct copr_msg {
+		int len;
+		unsigned char data[4000];
+	} copr_msg;
+
+#define SNDCTL_COPR_RESET             _SIO  ('C',  0)
+#define SNDCTL_COPR_LOAD	      _SIOWR('C',  1, copr_buffer)
+#define SNDCTL_COPR_RDATA	      _SIOWR('C',  2, copr_debug_buf)
+#define SNDCTL_COPR_RCODE	      _SIOWR('C',  3, copr_debug_buf)
+#define SNDCTL_COPR_WDATA	      _SIOW ('C',  4, copr_debug_buf)
+#define SNDCTL_COPR_WCODE	      _SIOW ('C',  5, copr_debug_buf)
+#define SNDCTL_COPR_RUN		      _SIOWR('C',  6, copr_debug_buf)
+#define SNDCTL_COPR_HALT	      _SIOWR('C',  7, copr_debug_buf)
+#define SNDCTL_COPR_SENDMSG	      _SIOWR('C',  8, copr_msg)
+#define SNDCTL_COPR_RCVMSG	      _SIOR ('C',  9, copr_msg)
+
+/*********************************************
+ * IOCTL commands for /dev/mixer
+ */
+	
+/* 
+ * Mixer devices
+ *
+ * There can be up to 20 different analog mixer channels. The
+ * SOUND_MIXER_NRDEVICES gives the currently supported maximum. 
+ * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
+ * the devices supported by the particular mixer.
+ */
+
+#define SOUND_MIXER_NRDEVICES	25
+#define SOUND_MIXER_VOLUME	0
+#define SOUND_MIXER_BASS	1
+#define SOUND_MIXER_TREBLE	2
+#define SOUND_MIXER_SYNTH	3
+#define SOUND_MIXER_PCM		4
+#define SOUND_MIXER_SPEAKER	5
+#define SOUND_MIXER_LINE	6
+#define SOUND_MIXER_MIC		7
+#define SOUND_MIXER_CD		8
+#define SOUND_MIXER_IMIX	9	/*  Recording monitor  */
+#define SOUND_MIXER_ALTPCM	10
+#define SOUND_MIXER_RECLEV	11	/* Recording level */
+#define SOUND_MIXER_IGAIN	12	/* Input gain */
+#define SOUND_MIXER_OGAIN	13	/* Output gain */
+/* 
+ * The AD1848 codec and compatibles have three line level inputs
+ * (line, aux1 and aux2). Since each card manufacturer have assigned
+ * different meanings to these inputs, it's inpractical to assign
+ * specific meanings (line, cd, synth etc.) to them.
+ */
+#define SOUND_MIXER_LINE1	14	/* Input source 1  (aux1) */
+#define SOUND_MIXER_LINE2	15	/* Input source 2  (aux2) */
+#define SOUND_MIXER_LINE3	16	/* Input source 3  (line) */
+#define SOUND_MIXER_DIGITAL1	17	/* Digital (input) 1 */
+#define SOUND_MIXER_DIGITAL2	18	/* Digital (input) 2 */
+#define SOUND_MIXER_DIGITAL3	19	/* Digital (input) 3 */
+#define SOUND_MIXER_PHONEIN	20	/* Phone input */
+#define SOUND_MIXER_PHONEOUT	21	/* Phone output */
+#define SOUND_MIXER_VIDEO	22	/* Video/TV (audio) in */
+#define SOUND_MIXER_RADIO	23	/* Radio in */
+#define SOUND_MIXER_MONITOR	24	/* Monitor (usually mic) volume */
+
+/* Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX) */
+/* Not counted to SOUND_MIXER_NRDEVICES, but use the same number space */
+#define SOUND_ONOFF_MIN		28
+#define SOUND_ONOFF_MAX		30
+
+/* Note!	Number 31 cannot be used since the sign bit is reserved */
+#define SOUND_MIXER_NONE	31
+
+/*
+ * The following unsupported macros are no longer functional.
+ * Use SOUND_MIXER_PRIVATE# macros in future.
+ */
+#define SOUND_MIXER_ENHANCE	SOUND_MIXER_NONE
+#define SOUND_MIXER_MUTE	SOUND_MIXER_NONE
+#define SOUND_MIXER_LOUD	SOUND_MIXER_NONE
+
+
+#define SOUND_DEVICE_LABELS	{"Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
+				 "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
+				 "Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
+				 "PhoneIn", "PhoneOut", "Video", "Radio", "Monitor"}
+
+#define SOUND_DEVICE_NAMES	{"vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
+				 "mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
+				 "line1", "line2", "line3", "dig1", "dig2", "dig3", \
+				 "phin", "phout", "video", "radio", "monitor"}
+
+/*	Device bitmask identifiers	*/
+
+#define SOUND_MIXER_RECSRC	0xff	/* Arg contains a bit for each recording source */
+#define SOUND_MIXER_DEVMASK	0xfe	/* Arg contains a bit for each supported device */
+#define SOUND_MIXER_RECMASK	0xfd	/* Arg contains a bit for each supported recording source */
+#define SOUND_MIXER_CAPS	0xfc
+#	define SOUND_CAP_EXCL_INPUT	0x00000001	/* Only one recording source at a time */
+#define SOUND_MIXER_STEREODEVS	0xfb	/* Mixer channels supporting stereo */
+#define SOUND_MIXER_OUTSRC	0xfa	/* Arg contains a bit for each input source to output */
+#define SOUND_MIXER_OUTMASK	0xf9	/* Arg contains a bit for each supported input source to output */
+
+/*	Device mask bits	*/
+
+#define SOUND_MASK_VOLUME	(1 << SOUND_MIXER_VOLUME)
+#define SOUND_MASK_BASS		(1 << SOUND_MIXER_BASS)
+#define SOUND_MASK_TREBLE	(1 << SOUND_MIXER_TREBLE)
+#define SOUND_MASK_SYNTH	(1 << SOUND_MIXER_SYNTH)
+#define SOUND_MASK_PCM		(1 << SOUND_MIXER_PCM)
+#define SOUND_MASK_SPEAKER	(1 << SOUND_MIXER_SPEAKER)
+#define SOUND_MASK_LINE		(1 << SOUND_MIXER_LINE)
+#define SOUND_MASK_MIC		(1 << SOUND_MIXER_MIC)
+#define SOUND_MASK_CD		(1 << SOUND_MIXER_CD)
+#define SOUND_MASK_IMIX		(1 << SOUND_MIXER_IMIX)
+#define SOUND_MASK_ALTPCM	(1 << SOUND_MIXER_ALTPCM)
+#define SOUND_MASK_RECLEV	(1 << SOUND_MIXER_RECLEV)
+#define SOUND_MASK_IGAIN	(1 << SOUND_MIXER_IGAIN)
+#define SOUND_MASK_OGAIN	(1 << SOUND_MIXER_OGAIN)
+#define SOUND_MASK_LINE1	(1 << SOUND_MIXER_LINE1)
+#define SOUND_MASK_LINE2	(1 << SOUND_MIXER_LINE2)
+#define SOUND_MASK_LINE3	(1 << SOUND_MIXER_LINE3)
+#define SOUND_MASK_DIGITAL1	(1 << SOUND_MIXER_DIGITAL1)
+#define SOUND_MASK_DIGITAL2	(1 << SOUND_MIXER_DIGITAL2)
+#define SOUND_MASK_DIGITAL3	(1 << SOUND_MIXER_DIGITAL3)
+#define SOUND_MASK_PHONEIN	(1 << SOUND_MIXER_PHONEIN)
+#define SOUND_MASK_PHONEOUT	(1 << SOUND_MIXER_PHONEOUT)
+#define SOUND_MASK_RADIO	(1 << SOUND_MIXER_RADIO)
+#define SOUND_MASK_VIDEO	(1 << SOUND_MIXER_VIDEO)
+#define SOUND_MASK_MONITOR	(1 << SOUND_MIXER_MONITOR)
+
+/* Obsolete macros */
+#define SOUND_MASK_MUTE		(1 << SOUND_MIXER_MUTE)
+#define SOUND_MASK_ENHANCE	(1 << SOUND_MIXER_ENHANCE)
+#define SOUND_MASK_LOUD		(1 << SOUND_MIXER_LOUD)
+
+#define MIXER_READ(dev)		_SIOR('M', dev, int)
+#define SOUND_MIXER_READ_VOLUME		MIXER_READ(SOUND_MIXER_VOLUME)
+#define SOUND_MIXER_READ_BASS		MIXER_READ(SOUND_MIXER_BASS)
+#define SOUND_MIXER_READ_TREBLE		MIXER_READ(SOUND_MIXER_TREBLE)
+#define SOUND_MIXER_READ_SYNTH		MIXER_READ(SOUND_MIXER_SYNTH)
+#define SOUND_MIXER_READ_PCM		MIXER_READ(SOUND_MIXER_PCM)
+#define SOUND_MIXER_READ_SPEAKER	MIXER_READ(SOUND_MIXER_SPEAKER)
+#define SOUND_MIXER_READ_LINE		MIXER_READ(SOUND_MIXER_LINE)
+#define SOUND_MIXER_READ_MIC		MIXER_READ(SOUND_MIXER_MIC)
+#define SOUND_MIXER_READ_CD		MIXER_READ(SOUND_MIXER_CD)
+#define SOUND_MIXER_READ_IMIX		MIXER_READ(SOUND_MIXER_IMIX)
+#define SOUND_MIXER_READ_ALTPCM		MIXER_READ(SOUND_MIXER_ALTPCM)
+#define SOUND_MIXER_READ_RECLEV		MIXER_READ(SOUND_MIXER_RECLEV)
+#define SOUND_MIXER_READ_IGAIN		MIXER_READ(SOUND_MIXER_IGAIN)
+#define SOUND_MIXER_READ_OGAIN		MIXER_READ(SOUND_MIXER_OGAIN)
+#define SOUND_MIXER_READ_LINE1		MIXER_READ(SOUND_MIXER_LINE1)
+#define SOUND_MIXER_READ_LINE2		MIXER_READ(SOUND_MIXER_LINE2)
+#define SOUND_MIXER_READ_LINE3		MIXER_READ(SOUND_MIXER_LINE3)
+
+/* Obsolete macros */
+#define SOUND_MIXER_READ_MUTE		MIXER_READ(SOUND_MIXER_MUTE)
+#define SOUND_MIXER_READ_ENHANCE	MIXER_READ(SOUND_MIXER_ENHANCE)
+#define SOUND_MIXER_READ_LOUD		MIXER_READ(SOUND_MIXER_LOUD)
+
+#define SOUND_MIXER_READ_RECSRC		MIXER_READ(SOUND_MIXER_RECSRC)
+#define SOUND_MIXER_READ_DEVMASK	MIXER_READ(SOUND_MIXER_DEVMASK)
+#define SOUND_MIXER_READ_RECMASK	MIXER_READ(SOUND_MIXER_RECMASK)
+#define SOUND_MIXER_READ_STEREODEVS	MIXER_READ(SOUND_MIXER_STEREODEVS)
+#define SOUND_MIXER_READ_CAPS		MIXER_READ(SOUND_MIXER_CAPS)
+
+#define MIXER_WRITE(dev)		_SIOWR('M', dev, int)
+#define SOUND_MIXER_WRITE_VOLUME	MIXER_WRITE(SOUND_MIXER_VOLUME)
+#define SOUND_MIXER_WRITE_BASS		MIXER_WRITE(SOUND_MIXER_BASS)
+#define SOUND_MIXER_WRITE_TREBLE	MIXER_WRITE(SOUND_MIXER_TREBLE)
+#define SOUND_MIXER_WRITE_SYNTH		MIXER_WRITE(SOUND_MIXER_SYNTH)
+#define SOUND_MIXER_WRITE_PCM		MIXER_WRITE(SOUND_MIXER_PCM)
+#define SOUND_MIXER_WRITE_SPEAKER	MIXER_WRITE(SOUND_MIXER_SPEAKER)
+#define SOUND_MIXER_WRITE_LINE		MIXER_WRITE(SOUND_MIXER_LINE)
+#define SOUND_MIXER_WRITE_MIC		MIXER_WRITE(SOUND_MIXER_MIC)
+#define SOUND_MIXER_WRITE_CD		MIXER_WRITE(SOUND_MIXER_CD)
+#define SOUND_MIXER_WRITE_IMIX		MIXER_WRITE(SOUND_MIXER_IMIX)
+#define SOUND_MIXER_WRITE_ALTPCM	MIXER_WRITE(SOUND_MIXER_ALTPCM)
+#define SOUND_MIXER_WRITE_RECLEV	MIXER_WRITE(SOUND_MIXER_RECLEV)
+#define SOUND_MIXER_WRITE_IGAIN		MIXER_WRITE(SOUND_MIXER_IGAIN)
+#define SOUND_MIXER_WRITE_OGAIN		MIXER_WRITE(SOUND_MIXER_OGAIN)
+#define SOUND_MIXER_WRITE_LINE1		MIXER_WRITE(SOUND_MIXER_LINE1)
+#define SOUND_MIXER_WRITE_LINE2		MIXER_WRITE(SOUND_MIXER_LINE2)
+#define SOUND_MIXER_WRITE_LINE3		MIXER_WRITE(SOUND_MIXER_LINE3)
+
+/* Obsolete macros */
+#define SOUND_MIXER_WRITE_MUTE		MIXER_WRITE(SOUND_MIXER_MUTE)
+#define SOUND_MIXER_WRITE_ENHANCE	MIXER_WRITE(SOUND_MIXER_ENHANCE)
+#define SOUND_MIXER_WRITE_LOUD		MIXER_WRITE(SOUND_MIXER_LOUD)
+
+#define SOUND_MIXER_WRITE_RECSRC	MIXER_WRITE(SOUND_MIXER_RECSRC)
+
+typedef struct mixer_info
+{
+  char id[16];
+  char name[32];
+  int  modify_counter;
+  int fillers[10];
+} mixer_info;
+
+typedef struct _old_mixer_info /* Obsolete */
+{
+  char id[16];
+  char name[32];
+} _old_mixer_info;
+
+#define SOUND_MIXER_INFO		_SIOR ('M', 101, mixer_info)
+#define SOUND_OLD_MIXER_INFO		_SIOR ('M', 101, _old_mixer_info)
+
+/*
+ * A mechanism for accessing "proprietary" mixer features. This method
+ * permits passing 128 bytes of arbitrary data between a mixer application
+ * and the mixer driver. Interpretation of the record is defined by
+ * the particular mixer driver.
+ */
+typedef unsigned char mixer_record[128];
+
+#define SOUND_MIXER_ACCESS		_SIOWR('M', 102, mixer_record)
+
+/*
+ * Two ioctls for special souncard function
+ */
+#define SOUND_MIXER_AGC  _SIOWR('M', 103, int)
+#define SOUND_MIXER_3DSE  _SIOWR('M', 104, int)
+
+/*
+ * The SOUND_MIXER_PRIVATE# commands can be redefined by low level drivers.
+ * These features can be used when accessing device specific features.
+ */
+#define SOUND_MIXER_PRIVATE1		_SIOWR('M', 111, int)
+#define SOUND_MIXER_PRIVATE2		_SIOWR('M', 112, int)
+#define SOUND_MIXER_PRIVATE3		_SIOWR('M', 113, int)
+#define SOUND_MIXER_PRIVATE4		_SIOWR('M', 114, int)
+#define SOUND_MIXER_PRIVATE5		_SIOWR('M', 115, int)
+
+/*
+ * SOUND_MIXER_GETLEVELS and SOUND_MIXER_SETLEVELS calls can be used
+ * for querying current mixer settings from the driver and for loading
+ * default volume settings _prior_ activating the mixer (loading
+ * doesn't affect current state of the mixer hardware). These calls
+ * are for internal use only.
+ */
+
+typedef struct mixer_vol_table {
+  int num;	/* Index to volume table */
+  char name[32];
+  int levels[32];
+} mixer_vol_table;
+
+#define SOUND_MIXER_GETLEVELS		_SIOWR('M', 116, mixer_vol_table)
+#define SOUND_MIXER_SETLEVELS		_SIOWR('M', 117, mixer_vol_table)
+
+/* 
+ * An ioctl for identifying the driver version. It will return value
+ * of the SOUND_VERSION macro used when compiling the driver.
+ * This call was introduced in OSS version 3.6 and it will not work
+ * with earlier versions (returns EINVAL).
+ */
+#define OSS_GETVERSION			_SIOR ('M', 118, int)
+
+/*
+ * Level 2 event types for /dev/sequencer
+ */
+
+/*
+ * The 4 most significant bits of byte 0 specify the class of
+ * the event: 
+ *
+ *	0x8X = system level events,
+ *	0x9X = device/port specific events, event[1] = device/port,
+ *		The last 4 bits give the subtype:
+ *			0x02	= Channel event (event[3] = chn).
+ *			0x01	= note event (event[4] = note).
+ *			(0x01 is not used alone but always with bit 0x02).
+ *	       event[2] = MIDI message code (0x80=note off etc.)
+ *
+ */
+
+#define EV_SEQ_LOCAL		0x80
+#define EV_TIMING		0x81
+#define EV_CHN_COMMON		0x92
+#define EV_CHN_VOICE		0x93
+#define EV_SYSEX		0x94
+/*
+ * Event types 200 to 220 are reserved for application use.
+ * These numbers will not be used by the driver.
+ */
+
+/*
+ * Events for event type EV_CHN_VOICE
+ */
+
+#define MIDI_NOTEOFF		0x80
+#define MIDI_NOTEON		0x90
+#define MIDI_KEY_PRESSURE	0xA0
+
+/*
+ * Events for event type EV_CHN_COMMON
+ */
+
+#define MIDI_CTL_CHANGE		0xB0
+#define MIDI_PGM_CHANGE		0xC0
+#define MIDI_CHN_PRESSURE	0xD0
+#define MIDI_PITCH_BEND		0xE0
+
+#define MIDI_SYSTEM_PREFIX	0xF0
+
+/*
+ * Timer event types
+ */
+#define TMR_WAIT_REL		1	/* Time relative to the prev time */
+#define TMR_WAIT_ABS		2	/* Absolute time since TMR_START */
+#define TMR_STOP		3
+#define TMR_START		4
+#define TMR_CONTINUE		5
+#define TMR_TEMPO		6
+#define TMR_ECHO		8
+#define TMR_CLOCK		9	/* MIDI clock */
+#define TMR_SPP			10	/* Song position pointer */
+#define TMR_TIMESIG		11	/* Time signature */
+
+/*
+ *	Local event types
+ */
+#define LOCL_STARTAUDIO		1
+
+#if (!defined(__KERNEL__) && !defined(KERNEL) && !defined(INKERNEL) && !defined(_KERNEL)) || defined(USE_SEQ_MACROS) 
+/*
+ *	Some convenience macros to simplify programming of the
+ *	/dev/sequencer interface
+ *
+ *	These macros define the API which should be used when possible.
+ */
+#define SEQ_DECLAREBUF()		SEQ_USE_EXTBUF()
+
+void seqbuf_dump(void);	/* This function must be provided by programs */
+
+extern int OSS_init(int seqfd, int buflen);
+extern void OSS_seqbuf_dump(int fd, unsigned char *buf, int buflen);
+extern void OSS_seq_advbuf(int len, int fd, unsigned char *buf, int buflen);
+extern void OSS_seq_needbuf(int len, int fd, unsigned char *buf, int buflen);
+extern void OSS_patch_caching(int dev, int chn, int patch,
+			      int fd, unsigned char *buf, int buflen);
+extern void OSS_drum_caching(int dev, int chn, int patch,
+			      int fd, unsigned char *buf, int buflen);
+extern void OSS_write_patch(int fd, unsigned char *buf, int len);
+extern int OSS_write_patch2(int fd, unsigned char *buf, int len);
+
+#define SEQ_PM_DEFINES int __foo_bar___
+#ifdef OSSLIB
+#  define SEQ_USE_EXTBUF() \
+		extern unsigned char *_seqbuf; \
+		extern int _seqbuflen;extern int _seqbufptr
+#  define SEQ_DEFINEBUF(len) SEQ_USE_EXTBUF();static int _requested_seqbuflen=len
+#  define _SEQ_ADVBUF(len) OSS_seq_advbuf(len, seqfd, _seqbuf, _seqbuflen)
+#  define _SEQ_NEEDBUF(len) OSS_seq_needbuf(len, seqfd, _seqbuf, _seqbuflen)
+#  define SEQ_DUMPBUF() OSS_seqbuf_dump(seqfd, _seqbuf, _seqbuflen)
+
+#  define SEQ_LOAD_GMINSTR(dev, instr) \
+		OSS_patch_caching(dev, -1, instr, seqfd, _seqbuf, _seqbuflen)
+#  define SEQ_LOAD_GMDRUM(dev, drum) \
+		OSS_drum_caching(dev, -1, drum, seqfd, _seqbuf, _seqbuflen)
+#else /* !OSSLIB */
+
+#  define SEQ_LOAD_GMINSTR(dev, instr)
+#  define SEQ_LOAD_GMDRUM(dev, drum)
+
+#  define SEQ_USE_EXTBUF() \
+		extern unsigned char _seqbuf[]; \
+		extern int _seqbuflen;extern int _seqbufptr
+
+#ifndef USE_SIMPLE_MACROS
+/* Sample seqbuf_dump() implementation:
+ *
+ *	SEQ_DEFINEBUF (2048);	-- Defines a buffer for 2048 bytes
+ *
+ *	int seqfd;		-- The file descriptor for /dev/sequencer.
+ *
+ *	void
+ *	seqbuf_dump ()
+ *	{
+ *	  if (_seqbufptr)
+ *	    if (write (seqfd, _seqbuf, _seqbufptr) == -1)
+ *	      {
+ *		perror ("write /dev/sequencer");
+ *		exit (-1);
+ *	      }
+ *	  _seqbufptr = 0;
+ *	}
+ */
+
+#define SEQ_DEFINEBUF(len)		unsigned char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
+#define _SEQ_NEEDBUF(len)		if ((_seqbufptr+(len)) > _seqbuflen) seqbuf_dump()
+#define _SEQ_ADVBUF(len)		_seqbufptr += len
+#define SEQ_DUMPBUF			seqbuf_dump
+#else
+/*
+ * This variation of the sequencer macros is used just to format one event
+ * using fixed buffer.
+ * 
+ * The program using the macro library must define the following macros before
+ * using this library.
+ *
+ * #define _seqbuf 		 name of the buffer (unsigned char[]) 
+ * #define _SEQ_ADVBUF(len)	 If the applic needs to know the exact
+ *				 size of the event, this macro can be used.
+ *				 Otherwise this must be defined as empty.
+ * #define _seqbufptr		 Define the name of index variable or 0 if
+ *				 not required. 
+ */
+#define _SEQ_NEEDBUF(len)	/* empty */
+#endif
+#endif /* !OSSLIB */
+
+#define SEQ_VOLUME_MODE(dev, mode)	{_SEQ_NEEDBUF(8);\
+					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
+					_seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
+					_seqbuf[_seqbufptr+2] = (dev);\
+					_seqbuf[_seqbufptr+3] = (mode);\
+					_seqbuf[_seqbufptr+4] = 0;\
+					_seqbuf[_seqbufptr+5] = 0;\
+					_seqbuf[_seqbufptr+6] = 0;\
+					_seqbuf[_seqbufptr+7] = 0;\
+					_SEQ_ADVBUF(8);}
+
+/*
+ * Midi voice messages
+ */
+
+#define _CHN_VOICE(dev, event, chn, note, parm) \
+					{_SEQ_NEEDBUF(8);\
+					_seqbuf[_seqbufptr] = EV_CHN_VOICE;\
+					_seqbuf[_seqbufptr+1] = (dev);\
+					_seqbuf[_seqbufptr+2] = (event);\
+					_seqbuf[_seqbufptr+3] = (chn);\
+					_seqbuf[_seqbufptr+4] = (note);\
+					_seqbuf[_seqbufptr+5] = (parm);\
+					_seqbuf[_seqbufptr+6] = (0);\
+					_seqbuf[_seqbufptr+7] = 0;\
+					_SEQ_ADVBUF(8);}
+
+#define SEQ_START_NOTE(dev, chn, note, vol) \
+		_CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)
+
+#define SEQ_STOP_NOTE(dev, chn, note, vol) \
+		_CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)
+
+#define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
+		_CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)
+
+/*
+ * Midi channel messages
+ */
+
+#define _CHN_COMMON(dev, event, chn, p1, p2, w14) \
+					{_SEQ_NEEDBUF(8);\
+					_seqbuf[_seqbufptr] = EV_CHN_COMMON;\
+					_seqbuf[_seqbufptr+1] = (dev);\
+					_seqbuf[_seqbufptr+2] = (event);\
+					_seqbuf[_seqbufptr+3] = (chn);\
+					_seqbuf[_seqbufptr+4] = (p1);\
+					_seqbuf[_seqbufptr+5] = (p2);\
+					*(short *)&_seqbuf[_seqbufptr+6] = (w14);\
+					_SEQ_ADVBUF(8);}
+/*
+ * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
+ * sending any MIDI bytes but it's absolutely not possible. Trying to do
+ * so _will_ cause problems with MPU401 intelligent mode).
+ *
+ * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be 
+ * sent by calling SEQ_SYSEX() several times (there must be no other events
+ * between them). First sysex fragment must have 0xf0 in the first byte
+ * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
+ * between these sysex start and end markers cannot be larger than 0x7f. Also
+ * lengths of each fragments (except the last one) must be 6.
+ *
+ * Breaking the above rules may work with some MIDI ports but is likely to
+ * cause fatal problems with some other devices (such as MPU401).
+ */
+#define SEQ_SYSEX(dev, buf, len) \
+					{int ii, ll=(len); \
+					 unsigned char *bufp=buf;\
+					 if (ll>6)ll=6;\
+					_SEQ_NEEDBUF(8);\
+					_seqbuf[_seqbufptr] = EV_SYSEX;\
+					_seqbuf[_seqbufptr+1] = (dev);\
+					for(ii=0;ii<ll;ii++)\
+					   _seqbuf[_seqbufptr+ii+2] = bufp[ii];\
+					for(ii=ll;ii<6;ii++)\
+					   _seqbuf[_seqbufptr+ii+2] = 0xff;\
+					_SEQ_ADVBUF(8);}
+
+#define SEQ_CHN_PRESSURE(dev, chn, pressure) \
+		_CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)
+
+#define SEQ_SET_PATCH SEQ_PGM_CHANGE
+#ifdef OSSLIB
+#   define SEQ_PGM_CHANGE(dev, chn, patch) \
+		{OSS_patch_caching(dev, chn, patch, seqfd, _seqbuf, _seqbuflen); \
+		 _CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0);}
+#else
+#   define SEQ_PGM_CHANGE(dev, chn, patch) \
+		_CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
+#endif
+
+#define SEQ_CONTROL(dev, chn, controller, value) \
+		_CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)
+
+#define SEQ_BENDER(dev, chn, value) \
+		_CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)
+
+
+#define SEQ_V2_X_CONTROL(dev, voice, controller, value)	{_SEQ_NEEDBUF(8);\
+					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
+					_seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
+					_seqbuf[_seqbufptr+2] = (dev);\
+					_seqbuf[_seqbufptr+3] = (voice);\
+					_seqbuf[_seqbufptr+4] = (controller);\
+					_seqbuf[_seqbufptr+5] = ((value)&0xff);\
+					_seqbuf[_seqbufptr+6] = ((value>>8)&0xff);\
+					_seqbuf[_seqbufptr+7] = 0;\
+					_SEQ_ADVBUF(8);}
+/*
+ * The following 5 macros are incorrectly implemented and obsolete.
+ * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
+ */
+#define SEQ_PITCHBEND(dev, voice, value) SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
+#define SEQ_BENDER_RANGE(dev, voice, value) SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
+#define SEQ_EXPRESSION(dev, voice, value) SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
+#define SEQ_MAIN_VOLUME(dev, voice, value) SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
+#define SEQ_PANNING(dev, voice, pos) SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
+
+/*
+ * Timing and syncronization macros
+ */
+
+#define _TIMER_EVENT(ev, parm)		{_SEQ_NEEDBUF(8);\
+				 	_seqbuf[_seqbufptr+0] = EV_TIMING; \
+				 	_seqbuf[_seqbufptr+1] = (ev); \
+					_seqbuf[_seqbufptr+2] = 0;\
+					_seqbuf[_seqbufptr+3] = 0;\
+				 	*(unsigned int *)&_seqbuf[_seqbufptr+4] = (parm); \
+					_SEQ_ADVBUF(8);}
+
+#define SEQ_START_TIMER()		_TIMER_EVENT(TMR_START, 0)
+#define SEQ_STOP_TIMER()		_TIMER_EVENT(TMR_STOP, 0)
+#define SEQ_CONTINUE_TIMER()		_TIMER_EVENT(TMR_CONTINUE, 0)
+#define SEQ_WAIT_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_ABS, ticks)
+#define SEQ_DELTA_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_REL, ticks)
+#define SEQ_ECHO_BACK(key)		_TIMER_EVENT(TMR_ECHO, key)
+#define SEQ_SET_TEMPO(value)		_TIMER_EVENT(TMR_TEMPO, value)
+#define SEQ_SONGPOS(pos)		_TIMER_EVENT(TMR_SPP, pos)
+#define SEQ_TIME_SIGNATURE(sig)		_TIMER_EVENT(TMR_TIMESIG, sig)
+
+/*
+ * Local control events
+ */
+
+#define _LOCAL_EVENT(ev, parm)		{_SEQ_NEEDBUF(8);\
+				 	_seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
+				 	_seqbuf[_seqbufptr+1] = (ev); \
+					_seqbuf[_seqbufptr+2] = 0;\
+					_seqbuf[_seqbufptr+3] = 0;\
+				 	*(unsigned int *)&_seqbuf[_seqbufptr+4] = (parm); \
+					_SEQ_ADVBUF(8);}
+
+#define SEQ_PLAYAUDIO(devmask)		_LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
+/*
+ * Events for the level 1 interface only 
+ */
+
+#define SEQ_MIDIOUT(device, byte)	{_SEQ_NEEDBUF(4);\
+					_seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
+					_seqbuf[_seqbufptr+1] = (byte);\
+					_seqbuf[_seqbufptr+2] = (device);\
+					_seqbuf[_seqbufptr+3] = 0;\
+					_SEQ_ADVBUF(4);}
+
+/*
+ * Patch loading.
+ */
+#ifdef OSSLIB
+#   define SEQ_WRPATCH(patchx, len) \
+		OSS_write_patch(seqfd, (char*)(patchx), len)
+#   define SEQ_WRPATCH2(patchx, len) \
+		OSS_write_patch2(seqfd, (char*)(patchx), len)
+#else
+#   define SEQ_WRPATCH(patchx, len) \
+		{if (_seqbufptr) SEQ_DUMPBUF();\
+		 if (write(seqfd, (char*)(patchx), len)==-1) \
+		    perror("Write patch: /dev/sequencer");}
+#   define SEQ_WRPATCH2(patchx, len) \
+		(SEQ_DUMPBUF(), write(seqfd, (char*)(patchx), len))
+#endif
+
+#endif
+#endif
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index 1bf126fe6..b7a6705a2 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -535,8 +535,9 @@ const char *windows_device_names[] =
   "\\dev\\pipew",
   "\\dev\\socket",
   "\\dev\\windows",
-
-  NULL, NULL, NULL,
+  "\\dev\\dsp",
+  
+  NULL, NULL,
 
   "\\dev\\disk",
   "\\dev\\fd%d",
@@ -602,6 +603,8 @@ get_device_number (const char *name, int &unit, BOOL from_conv)
 	devn = FH_PTYM;
       else if (deveq ("windows"))
 	devn = FH_WINDOWS;
+      else if (deveq ("dsp"))
+	devn = FH_OSS_DSP;
       else if (deveq ("conin"))
 	devn = FH_CONIN;
       else if (deveq ("conout"))