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+native
+END
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/////////////////////////////////////////////////////////////////////////
// $Id: soundwin.cc,v 1.13 2003/04/05 08:26:49 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2001  MandrakeSoft S.A.
//
//    MandrakeSoft S.A.
//    43, rue d'Aboukir
//    75002 Paris - France
//    http://www.linux-mandrake.com/
//    http://www.mandrakesoft.com/
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

// This file (SOUNDWIN.CC) written and donated by Josef Drexler

// Define BX_PLUGGABLE in files that can be compiled into plugins.  For
// platforms that require a special tag on exported symbols, BX_PLUGGABLE 
// is used to know when we are exporting symbols and when we are importing.
#define BX_PLUGGABLE

#include "bochs.h"
#if defined(WIN32) && BX_SUPPORT_SB16

#define LOG_THIS bx_devices.pluginSB16Device->

bx_sound_windows_c::bx_sound_windows_c(bx_sb16_c *sb16)
  :bx_sound_output_c(sb16)
{
  this->sb16 = sb16;

  MidiOpen = 0;
  WaveOpen = 0;

  ismidiready = 1;
  iswaveready = 1;

  // size is the total size of the midi header and buffer and the
  // BX_SOUND_WINDOWS_NBUF wave header and buffers, all aligned
  // on a 16-byte boundary

#define ALIGN(size) ( (size + 15) & ~15 )

#define size   ALIGN(sizeof(MIDIHDR)) \
	     + ALIGN(sizeof(WAVEHDR)) \
	     + ALIGN(BX_SOUND_WINDOWS_MAXSYSEXLEN) * BX_SOUND_WINDOWS_NBUF \
	     + ALIGN(BX_SOUND_OUTPUT_WAVEPACKETSIZE) * BX_SOUND_WINDOWS_NBUF

  DataHandle = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, size);
  DataPointer = (Bit8u*) GlobalLock(DataHandle);

  if (DataPointer == NULL)
    BX_PANIC(("GlobalLock returned NULL-pointer"));

#define NEWBUFFER(size) &(DataPointer[offset]); offset += ALIGN(size)

  int offset = 0;
  MidiHeader = (LPMIDIHDR) NEWBUFFER(sizeof(MIDIHDR));
  MidiData = (LPSTR) NEWBUFFER(BX_SOUND_WINDOWS_MAXSYSEXLEN);

  for (int bufnum=0; bufnum<BX_SOUND_WINDOWS_NBUF; bufnum++)
    {
      WaveHeader[bufnum] = (LPWAVEHDR) NEWBUFFER(sizeof(WAVEHDR));
      WaveData[bufnum] = (LPSTR) NEWBUFFER(BX_SOUND_OUTPUT_WAVEPACKETSIZE);
    }

  if (offset > size)
    BX_PANIC(("Allocated memory was too small!"));

#undef size
#undef ALIGN
#undef NEWBUFFER
}

bx_sound_windows_c::~bx_sound_windows_c()
{
  GlobalUnlock(DataHandle);
  GlobalFree(DataHandle);
}

int bx_sound_windows_c::waveready()
{
  if (iswaveready == 0)
    checkwaveready();

  if (iswaveready == 1)
    return BX_SOUND_OUTPUT_OK;
  else
    return BX_SOUND_OUTPUT_ERR;
}
int bx_sound_windows_c::midiready()
{
  if (ismidiready == 0)
    checkmidiready();

  if (ismidiready == 1)
    return BX_SOUND_OUTPUT_OK;
  else
    return BX_SOUND_OUTPUT_ERR;
}

int bx_sound_windows_c::openmidioutput(char *device)
{
  // could make the output device selectable,
  // but currently only the midi mapper is supported
  UNUSED(device);

  UINT deviceid = (UINT) MIDIMAPPER;

  MidiOpen = 0;

  UINT ret = midiOutOpen( &MidiOut, deviceid, 0, 0, CALLBACK_NULL);
  if (ret == 0)
    MidiOpen = 1;

  WRITELOG( MIDILOG(4), "midiOutOpen() = %d, MidiOpen: %d", ret, MidiOpen);

  return (MidiOpen == 1) ? BX_SOUND_OUTPUT_OK : BX_SOUND_OUTPUT_ERR;
}

int bx_sound_windows_c::sendmidicommand(int delta, int command, int length, Bit8u data[])
{
  UINT ret;

  if (MidiOpen != 1)
    return BX_SOUND_OUTPUT_ERR;

  if ( (command == 0xf0) || (command == 0xf7) || (length > 3) )
    {
      WRITELOG( WAVELOG(5), "SYSEX started, length %d", length);
      ismidiready = 0;   // until the buffer is done
      memcpy(MidiData, data, length);
      MidiHeader->lpData = MidiData;
      MidiHeader->dwBufferLength = BX_SOUND_WINDOWS_MAXSYSEXLEN;
      MidiHeader->dwBytesRecorded = 0;
      MidiHeader->dwUser = 0;
      MidiHeader->dwFlags = 0;
      ret = midiOutPrepareHeader(MidiOut, MidiHeader, sizeof(*MidiHeader));
      if (ret != 0)
	WRITELOG( MIDILOG(2), "midiOutPrepareHeader() = %d", ret);
      ret = midiOutLongMsg(MidiOut, MidiHeader, sizeof(*MidiHeader));
      if (ret != 0)
	WRITELOG( MIDILOG(2), "midiOutLongMsg() = %d", ret);
    }
  else
    {
      DWORD msg = command;

      for (int i = 0; i<length; i++)
	msg |= (data[i] << (8 * (i + 1) ) );

      ret = midiOutShortMsg(MidiOut, msg);
      WRITELOG( MIDILOG(4), "midiOutShortMsg(%x) = %d", msg, ret);
    }

  return (ret == 0) ? BX_SOUND_OUTPUT_OK : BX_SOUND_OUTPUT_ERR;
}

int bx_sound_windows_c::closemidioutput()
{
  UINT ret;

  if (MidiOpen != 1)
    return BX_SOUND_OUTPUT_ERR;

  ret = midiOutReset(MidiOut);
  if (ismidiready == 0)
    checkmidiready();   // to clear any pending SYSEX

  ret = midiOutClose(MidiOut);
  WRITELOG( MIDILOG(4), "midiOutClose() = %d", ret);
  MidiOpen = 0;

  return (ret == 0) ? BX_SOUND_OUTPUT_OK : BX_SOUND_OUTPUT_ERR;
}

int bx_sound_windows_c::openwaveoutput(char *device)
{
  // could make the output device selectable,
  // but currently only the midi mapper is supported
  UNUSED(device);

  WRITELOG( WAVELOG(4), "openwaveoutput(%s)", device);

#ifdef usewaveOut
  WaveDevice = (UINT) WAVEMAPPER;

  for (int i=0; i<BX_SOUND_WINDOWS_NBUF; i++)
    WaveHeader[i]->dwFlags = WHDR_DONE;

  head = 0;
  tailfull = 0;
  tailplay = 0;
  needreopen = 0;
#endif

  return BX_SOUND_OUTPUT_OK;
}

int bx_sound_windows_c::playnextbuffer()
{
  UINT ret;
  PCMWAVEFORMAT waveformat;
  int bufnum;

  // if the format is different, we have to reopen the device,
  // so reset it first
  if (needreopen != 0)
    if (WaveOpen != 0)
      ret = waveOutReset( WaveOut );

  // clean up the buffers and mark if output is ready
  checkwaveready();

  // do we have to play anything?
  if (tailplay == head)
    return BX_SOUND_OUTPUT_OK;

  // if the format is different, we have to close and reopen the device
  // or, just open the device if it's not open yet
  if ( (needreopen != 0) || (WaveOpen == 0) )
    {
      if (WaveOpen != 0)
	{
	  ret = waveOutClose( WaveOut );
	  WaveOpen = 0;
	}

      // try three times to find a suitable format
      for (int tries = 0; tries < 3; tries++)
	{
	  int frequency = WaveInfo.frequency;
	  int stereo = WaveInfo.stereo;
	  int bits = WaveInfo.bits;
	  int format = WaveInfo.format;
	  int bps = (bits / 8) * (stereo + 1);

	  waveformat.wf.wFormatTag = WAVE_FORMAT_PCM;
	  waveformat.wf.nChannels = stereo + 1;
	  waveformat.wf.nSamplesPerSec = frequency;
	  waveformat.wf.nAvgBytesPerSec = frequency * bps;
	  waveformat.wf.nBlockAlign = bps;
	  waveformat.wBitsPerSample = bits;

	  ret = waveOutOpen( &(WaveOut), WaveDevice, (LPWAVEFORMATEX)&(waveformat.wf), 0, 0, CALLBACK_NULL);
	  if (ret != 0)
	    {
	      char errormsg[4*MAXERRORLENGTH+1];
	      waveOutGetErrorTextA(ret, errormsg, 4*MAXERRORLENGTH+1);
	      WRITELOG( WAVELOG(5), "waveOutOpen: %s", errormsg);
	      switch (tries)
		{
		case 0:	// maybe try a different frequency
		  if (frequency < 15600)
		    frequency = 11025;
		  else if (frequency < 31200)
		    frequency = 22050;
		  else
		    frequency = 44100;

		  WRITELOG( WAVELOG(4), "Couldn't open wave device (error %d), trying frequency %d", ret, frequency);

		  break;
		case 1:	// or something else
		  frequency = 11025;
		  stereo = 0;
		  bits = 8;
		  bps = 1;

		  WRITELOG( WAVELOG(4), "Couldn't open wave device again (error %d), trying 11KHz, mono, 8bit", ret);

		  break;
		case 2:	// nope, doesn't work

		  WRITELOG( WAVELOG(2), "Couldn't open wave device (error %d)!", ret);

		  return BX_SOUND_OUTPUT_ERR;
		}
	      WRITELOG( WAVELOG(5), "The format was: wFormatTag=%d, nChannels=%d, nSamplesPerSec=%d,",
			waveformat.wf.wFormatTag, waveformat.wf.nChannels, waveformat.wf.nSamplesPerSec);
	      WRITELOG( WAVELOG(5), "                nAvgBytesPerSec=%d, nBlockAlign=%d, wBitsPerSample=%d",
			waveformat.wf.nAvgBytesPerSec, waveformat.wf.nBlockAlign, waveformat.wBitsPerSample);

	    }
	  else
	    {
	      WaveOpen = 1;
	      needreopen = 0;
	      break;
	    }
	}
    }

  for (bufnum=tailplay; bufnum != head;
       bufnum++, bufnum &= BX_SOUND_WINDOWS_NMASK, tailplay=bufnum)
    {
      WRITELOG( WAVELOG(5), "Playing buffer %d", bufnum);

      // prepare the wave header
      WaveHeader[bufnum]->lpData = WaveData[bufnum];