/*
mediastreamer2 library - modular sound and video processing and streaming
Copyright (C) 2006  Simon MORLAT (simon.morlat@linphone.org)

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#if defined(_WIN32_WCE)
#define DISABLE_SPEEX
#endif

#ifndef WINSND_BUFLEN
#define WINSND_BUFLEN 320
#endif

#ifndef MAX_WAVEHDR
#define MAX_WAVEHDR 6
#endif

#ifndef DISABLE_SPEEX
#include <speex/speex_preprocess.h>
#endif

#include "mediastreamer2/mssndcard.h"
#include "mediastreamer2/msfilter.h"
#include "mediastreamer2/msticker.h"

#ifdef WIN32
#include <malloc.h> /* for alloca */
#endif

#include <mmsystem.h>
#ifdef _MSC_VER
#include <mmreg.h>
#endif
#include <msacm.h>

MSFilter *ms_winsnd_read_new(MSSndCard *card);
MSFilter *ms_winsnd_write_new(MSSndCard *card);

typedef struct WinSndData{
	char *pcmdev;
	char *mixdev;
	int   devid;

    int sound_err;
    WAVEFORMATEX wfx;
#ifdef CONTROLVOLUME
	DWORD dwOldVolume;
#endif
	WAVEHDR waveouthdr[30];
    char waveoutbuffer[30][3200];
    HWAVEOUT waveoutdev;
    int buffer_playing;
	int pos_whdr;

    WAVEHDR waveinhdr[30];
    HWAVEIN waveindev;
    char waveinbuffer[30][3200];

    int rate;
	int bits;
	ms_thread_t thread;
	ms_mutex_t mutex;
	queue_t rq;
	MSBufferizer * bufferizer;
	bool_t read_started;
	bool_t write_started;
	bool_t stereo;

#ifndef DISABLE_SPEEX
	SpeexPreprocessState *pst;
#endif

	uint64_t bytes_read;
	int32_t stat_input;
	int32_t stat_output;
	int32_t stat_notplayed;
} WinSndData;

static uint64_t winsnd_get_cur_time( void *data){
	WinSndData *d=(WinSndData*)data;
	uint64_t curtime=(d->bytes_read*1000)/(d->rate*(d->bits/8)*((d->stereo==FALSE) ? 1 : 2));
	ms_debug("winsnd_get_cur_time: bytes_read=%lu, rate=%i, bits=%i, stereo=%i return %lu\n",
	(unsigned long)d->bytes_read,d->rate,d->bits,d->stereo,(unsigned long)curtime);
	return curtime;
}

static void CALLBACK
SpeakerCallback (HWAVEOUT _waveoutdev, UINT uMsg, DWORD dwInstance,
                 DWORD dwParam1, DWORD dwParam2)
{
  WAVEHDR *wHdr;
  WinSndData *device;

  switch (uMsg)
    {
      case WOM_OPEN:
          ms_message("SpeakerCallback : WOM_OPEN");
        break;
      case WOM_CLOSE:
          ms_message("SpeakerCallback : WOM_CLOSE");
        break;
      case WOM_DONE:
        wHdr = (WAVEHDR *) dwParam1;
        device = (WinSndData *)dwInstance;
        device->buffer_playing--;
		if (device->stat_output==0)
		{
			device->stat_input=1; /* reset */
			device->stat_notplayed=0;
		}
		device->stat_output++;
        break;
      default:
        break;
    }
}

static void CALLBACK
WaveInCallback (HWAVEIN waveindev, UINT uMsg, DWORD dwInstance, DWORD dwParam1,
                DWORD dwParam2)
{
  WAVEHDR *wHdr;
  MMRESULT mr = NOERROR;
  WinSndData *device;

  device = (WinSndData *)dwInstance;

  switch (uMsg)
    {
      case MM_WOM_DONE:
        wHdr = (WAVEHDR *) dwParam1;
        /* A waveform-audio data block has been played and 
           can now be freed. */
        ms_message("WaveInCallback : MM_WOM_DONE");
        waveInUnprepareHeader (waveindev, (LPWAVEHDR) wHdr, sizeof (WAVEHDR));
        break;

      case WIM_OPEN:
        ms_message("WaveInCallback : WIM_OPEN");
        break;
      case WIM_CLOSE:
        ms_message("WaveInCallback : WIM_CLOSE");
        break;
      case WIM_DATA:
        wHdr = (WAVEHDR *) dwParam1;

		device->bytes_read+=wHdr->dwBytesRecorded;

        if (!device->read_started && !device->write_started)
          {
            mr = waveInUnprepareHeader (device->waveindev, (LPWAVEHDR) wHdr, sizeof (WAVEHDR));
            ms_warning("WaveInCallback : unprepare header (waveInUnprepareHeader:0x%i)", mr);
            return;
          }

        if (wHdr->dwBufferLength!=wHdr->dwBytesRecorded)
        {
            mr = waveInAddBuffer (device->waveindev,
                wHdr,
                sizeof (device->waveinhdr[wHdr->dwUser]));
            if (mr != MMSYSERR_NOERROR)
            {
                ms_warning("WaveInCallback : error adding buffer to sound card (waveInAddBuffer:0x%i)", mr);
            }
            return;
        }
    	ms_mutex_lock(&device->mutex);
		if (device->read_started)
        {
            mblk_t *rm=NULL;
            if (rm==NULL) rm=allocb(wHdr->dwBufferLength,0);
			memcpy(rm->b_wptr,wHdr->lpData, wHdr->dwBufferLength);

#ifndef DISABLE_SPEEX
			if (device->pst!=NULL)
			{
				int vad;
				//memset(rm->b_wptr,0, wHdr->dwBufferLength);

				vad = speex_preprocess(device->pst, (short*)rm->b_wptr, NULL);
#if 0
				if (vad!=1)
		            ms_message("WaveInCallback : %d", vad);
#endif
			}

#endif
			rm->b_wptr+=wHdr->dwBufferLength;
			putq(&device->rq,rm);
			device->stat_input++;
		    rm=NULL;
        }
    	ms_mutex_unlock(&device->mutex);

        mr = waveInAddBuffer (device->waveindev,
            wHdr,
            sizeof (device->waveinhdr[wHdr->dwUser]));
        if (mr != MMSYSERR_NOERROR)
        {
            ms_warning("WaveInCallback : error adding buffer to sound card (waveInAddBuffer:0x%i)", mr);
            return;
        }
    }
}

static int winsnd_open(WinSndData *device, int devnumber, int bits,int stereo, int rate, int *minsz)
{
    MMRESULT mr = NOERROR;
    DWORD dwFlag;
    int i;
    int channel = 1;
    if (stereo>0)
        channel = stereo;
	device->wfx.wFormatTag = WAVE_FORMAT_PCM;
	device->wfx.cbSize = 0;
	device->wfx.nAvgBytesPerSec = 16000;
	device->wfx.nBlockAlign = 2;
	device->wfx.nChannels = channel;
	device->wfx.nSamplesPerSec = rate; /* 8000; */
	device->wfx.wBitsPerSample = bits;
	

    dwFlag = CALLBACK_FUNCTION;
    if (devnumber != WAVE_MAPPER)
        dwFlag = WAVE_MAPPED | CALLBACK_FUNCTION;
    mr = waveOutOpen (&(device->waveoutdev), devnumber, &(device->wfx), (DWORD) SpeakerCallback,
                    (DWORD)device, dwFlag);
    if (mr != NOERROR)
    {
        ms_warning("Failed to open device: trying default device. (waveOutOpen:0x%i)", mr);
        dwFlag = CALLBACK_FUNCTION;
        mr = waveOutOpen (&(device->waveoutdev), WAVE_MAPPER, &(device->wfx), (DWORD) SpeakerCallback,
                        (DWORD)device, dwFlag);
    }
    if (mr != NOERROR)
    {
        ms_warning("Failed to open windows sound device. (waveOutOpen:0x%i)", mr);
        return -1;
    }

#if 0
#define MM_WOM_SETSECONDARYGAINCLASS   (WM_USER)
#define MM_WOM_SETSECONDARYGAINLIMIT   (WM_USER+1)
#define MM_WOM_FORCESPEAKER            (WM_USER+2)

	bool bSpeaker=TRUE;
	mr = waveOutMessage(device->waveoutdev, MM_WOM_FORCESPEAKER, bSpeaker, 0);
    if (mr != NOERROR)
    {
        ms_warning("Failed to use earphone. (waveOutMessage:0x%i)", mr);
        return -1;
    }

	typedef HRESULT (* _SetSpeakerMode)(DWORD mode);
	_SetSpeakerMode pfnSetSpeakerMode;

	HINSTANCE hDll = LoadLibrary(L"\\windows\\ossvcs.dll");
	//_debug(L"ossvcs.dll h=%X",hDll);
	pfnSetSpeakerMode = (_SetSpeakerMode)GetProcAddress(hDll,(LPCTSTR)218);
	if (pfnSetSpeakerMode)
	{
	//_debug(L"SetSpeakerMode imported.");
	DWORD sm = 0;
	//_debug(L"SpeakerMode set to %d", sm);
	pfnSetSpeakerMode(sm);
	}
	//else
	//_debug(L"pfnSetSpeakerMode import failed.");
	FreeLibrary(hDll);
#endif

#ifdef CONTROLVOLUME
	mr = waveOutGetVolume(device->waveoutdev, &device->dwOldVolume);
    if (mr != NOERROR)
    {
        ms_warning("Failed to get volume device. (waveOutGetVolume:0x%i)", mr);
    }

	mr = waveOutSetVolume(device->waveoutdev, 0xFFFFFFFF);
    if (mr != NOERROR)
    {
        ms_warning("Failed to set volume device. (waveOutSetVolume:0x%i)", mr);
    }
#endif

    /* prepare windows buffers */

    for (i = 0; i < MAX_WAVEHDR; i++)
    {
        memset (&(device->waveouthdr[i]), 0, sizeof (device->waveouthdr[i]));
        device->waveouthdr[i].lpData = device->waveoutbuffer[i];
        /* BUG: on ne connait pas la taille des frames a recevoir... 
        on utilise enc_frame_per_packet au lien de dec_frame_per_packet */

        device->waveouthdr[i].dwBufferLength = device->rate/8000 * WINSND_BUFLEN;
        /* 480 pour 98 (speex) */
        device->waveouthdr[i].dwFlags = 0;
        device->waveouthdr[i].dwUser = i;

        mr = waveOutPrepareHeader (device->waveoutdev, &(device->waveouthdr[i]),
            sizeof (device->waveouthdr[i]));
        if (mr != MMSYSERR_NOERROR){
            ms_warning("Failed to prepare windows sound device. (waveOutPrepareHeader:0x%i)", mr);
        }
        else
        {
            ms_message("Sound Header prepared %i for windows sound device. (waveOutPrepareHeader)", i);
        }
    }


    /* Init Microphone device */
    dwFlag = CALLBACK_FUNCTION;
    if (devnumber != WAVE_MAPPER)
        dwFlag = WAVE_MAPPED | CALLBACK_FUNCTION;
    mr = waveInOpen (&(device->waveindev), devnumber, &(device->wfx),
                (DWORD) WaveInCallback, (DWORD)device, dwFlag);
    if (mr != NOERROR)
    {
        ms_warning("Failed to open device: trying default device. (waveInOpen:0x%i)", mr);
        dwFlag = CALLBACK_FUNCTION;
        mr = waveInOpen (&(device->waveindev), WAVE_MAPPER, &(device->wfx),
                    (DWORD) WaveInCallback, (DWORD)device, dwFlag);
    }

    if (mr != NOERROR)
    {
        ms_warning("Failed to prepare windows sound device. (waveInOpen:0x%i)", mr);
        return -1;
    }



    for (i = 0; i < MAX_WAVEHDR; i++)
    {
        memset (&(device->waveinhdr[i]), 0, sizeof (device->waveinhdr[i]));
        device->waveinhdr[i].lpData = device->waveinbuffer[i];
        /* frameSize */
        device->waveinhdr[i].dwBufferLength = device->rate/8000 * WINSND_BUFLEN;
        device->waveinhdr[i].dwFlags = 0;
        device->waveinhdr[i].dwUser = i;
        mr = waveInPrepareHeader (device->waveindev, &(device->waveinhdr[i]),             
            sizeof (device->waveinhdr[i]));
        if (mr == MMSYSERR_NOERROR){
            mr = waveInAddBuffer (device->waveindev, &(device->waveinhdr[i]),
                sizeof (device->waveinhdr[i]));
            if (mr == MMSYSERR_NOERROR)
            {
                ms_message("Sound Header prepared %i for windows sound device. (waveInAddBuffer)", i);
            }
            else
            {
                ms_warning("Failed to prepare windows sound device. (waveInAddBuffer:0x%i)", mr);
            }
        }
        else
        {
            ms_warning("Failed to prepare windows sound device. (waveInPrepareHeader:0x%i)", mr);
        }
    }

#ifndef DISABLE_SPEEX
#if 0
	device->pst = speex_preprocess_state_init((device->rate/8000 * 320)/2, device->rate);
	if (device->pst!=NULL) {
		float f;
		i=1;
		speex_preprocess_ctl(device->pst, SPEEX_PREPROCESS_SET_VAD, &i);
		i=1;
		speex_preprocess_ctl(device->pst, SPEEX_PREPROCESS_SET_DENOISE, &i);
		i=0;
		speex_preprocess_ctl(device->pst, SPEEX_PREPROCESS_SET_AGC, &i);
		f=8000;
		speex_preprocess_ctl(device->pst, SPEEX_PREPROCESS_SET_AGC_LEVEL, &f);
		i=0;
		speex_preprocess_ctl(device->pst, SPEEX_PREPROCESS_SET_DEREVERB, &i);
		f=.4;
		speex_preprocess_ctl(device->pst, SPEEX_PREPROCESS_SET_DEREVERB_DECAY, &f);
		f=.3;
		speex_preprocess_ctl(device->pst, SPEEX_PREPROCESS_SET_DEREVERB_LEVEL, &f);
	}
#endif
#endif

	mr = waveInStart (device->waveindev);
    if (mr != MMSYSERR_NOERROR)
    {
        ms_warning("Failed to start recording on windows sound device. (waveInStart:0x%i)", mr);
        return -1;
    }

	*minsz=device->rate/8000 * 320;
	return 0;
}

static void winsnd_set_level(MSSndCard *card, MSSndCardMixerElem e, int percent)
{
	WinSndData *d=(WinSndData*)card->data;
    MMRESULT mr = NOERROR;
    DWORD dwVolume = 0xFFFF;
    dwVolume = ((0xFFFF) * percent) / 100;

	if (d->mixdev==NULL) return;
	switch(e){
		case MS_SND_CARD_MASTER:
            mr = waveOutSetVolume(d->waveoutdev, dwVolume);
	        if (mr != MMSYSERR_NOERROR)
	        {
                ms_warning("Failed to set master volume. (waveOutSetVolume:0x%i)", mr);
                return;
	        }
            return;
        break;
#if 0
        case MS_SND_CARD_CAPTURE:
			wincmd=SOUND_MIXER_IGAIN;
		break;
		case MS_SND_CARD_PLAYBACK:
			wincmd=SOUND_MIXER_PCM;
		break;
#endif
        default:
			ms_warning("winsnd_card_set_level: unsupported command.");
			return;
	}
}

static int winsnd_get_level(MSSndCard *card, MSSndCardMixerElem e)
{
	WinSndData *d=(WinSndData*)card->data;
    MMRESULT mr = NOERROR;
    DWORD dwVolume = 0x0000;

	if (d->mixdev==NULL) return -1;
	switch(e){
		case MS_SND_CARD_MASTER:
            mr=waveOutGetVolume(d->waveoutdev, &dwVolume);
            // Transform to 0 to 100 scale
            //dwVolume = (dwVolume *100) / (0xFFFF);
            return 60;
        break;
#if 0
        case MS_SND_CARD_CAPTURE:
			osscmd=SOUND_MIXER_IGAIN;
		break;
		case MS_SND_CARD_PLAYBACK:
			osscmd=SOUND_MIXER_PCM;
		break;
#endif
		default:
			ms_warning("winsnd_card_get_level: unsupported command.");
			return -1;
	}
	return -1;
}

static void winsnd_set_source(MSSndCard *card, MSSndCardCapture source)
{
	WinSndData *d=(WinSndData*)card->data;
	if (d->mixdev==NULL) return;

	switch(source){
		case MS_SND_CARD_MIC:
		break;
		case MS_SND_CARD_LINE:
		break;
	}	
}

static void winsnd_init(MSSndCard *card){
	WinSndData *d=(WinSndData*)ms_new(WinSndData,1);
    memset(d, 0, sizeof(WinSndData));
	d->bytes_read=0;
	d->pcmdev=NULL;
	d->mixdev=NULL;
    d->sound_err=-1; /* not opened */
	d->read_started=FALSE;
	d->write_started=FALSE;
	d->bits=16;
	d->rate=8000;
	d->stereo=FALSE;
	qinit(&d->rq);
	d->bufferizer=ms_bufferizer_new();
	ms_mutex_init(&d->mutex,NULL);
	card->data=d;
#ifndef DISABLE_SPEEX
	d->pst=0;
#endif
	d->stat_input=0;
	d->stat_output=0;
	d->stat_notplayed=0;
}

static void winsnd_uninit(MSSndCard *card){
	WinSndData *d=(WinSndData*)card->data;
	if (d==NULL)
		return;
	if (d->pcmdev!=NULL) ms_free(d->pcmdev);
	if (d->mixdev!=NULL) ms_free(d->mixdev);
	ms_bufferizer_destroy(d->bufferizer);
	flushq(&d->rq,0);

	ms_mutex_destroy(&d->mutex);

#ifndef DISABLE_SPEEX
	if (d->pst!=NULL)
	    speex_preprocess_state_destroy(d->pst);
#endif

	ms_free(d);
}

#define DSP_NAME "/dev/dsp"
#define MIXER_NAME "/dev/mixer"

static void winsnd_detect(MSSndCardManager *m);
static  MSSndCard *winsnd_dup(MSSndCard *obj);

MSSndCardDesc winsnd_card_desc={
	"WINSND",
	winsnd_detect,
	winsnd_init,
	winsnd_set_level,
	winsnd_get_level,
	winsnd_set_source,
	ms_winsnd_read_new,
	ms_winsnd_write_new,
	winsnd_uninit,
	winsnd_dup
};

static  MSSndCard *winsnd_dup(MSSndCard *obj){
	MSSndCard *card=ms_snd_card_new(&winsnd_card_desc);
	WinSndData *dcard=(WinSndData*)card->data;
	WinSndData *dobj=(WinSndData*)obj->data;
	dcard->pcmdev=ms_strdup(dobj->pcmdev);
	dcard->mixdev=ms_strdup(dobj->mixdev);
	dcard->devid=dobj->devid;
	card->name=ms_strdup(obj->name);
	return card;
}

static MSSndCard *winsnd_card_new(const char *pcmdev, const char *mixdev, int id){
	MSSndCard *card=ms_snd_card_new(&winsnd_card_desc);
	WinSndData *d=(WinSndData*)card->data;
	d->pcmdev=ms_strdup(pcmdev);
	d->mixdev=ms_strdup(mixdev);
	card->name=ms_strdup(pcmdev);
	d->devid=id;
	return card;
}

static void winsnd_detect(MSSndCardManager *m){
    MMRESULT mr = NOERROR;
    unsigned int nInDevices = waveInGetNumDevs ();
    unsigned int item;
	char pcmdev[1024];
	char mixdev[1024];

    for (item = 0; item < nInDevices; item++)
    {
        WAVEINCAPS caps;
        mr = waveInGetDevCaps (item, &caps, sizeof (WAVEINCAPS));
        if (mr == MMSYSERR_NOERROR)
        {
            MSSndCard *card;
	        snprintf(pcmdev,sizeof(pcmdev),"%s",caps.szPname);
	        snprintf(mixdev,sizeof(mixdev),"%s",caps.szPname);
            if (item == 0)
            {
		        card=winsnd_card_new(pcmdev,mixdev, item-1);
		        ms_snd_card_manager_add_card(m,card);
            }
			card=winsnd_card_new(pcmdev,mixdev, item);
			ms_snd_card_manager_add_card(m,card);
        }
    }
#if 0
	nInDevices = mixerGetNumDevs ();
    for (item = 0; item < nInDevices; item++)
    {
        MIXERCAPS caps;
        mr = mixerGetDevCaps (item, &caps, sizeof (MIXERCAPS));
        if (mr == MMSYSERR_NOERROR)
        {
	        snprintf(pcmdev,sizeof(pcmdev),"%s",caps.szPname);
	        snprintf(mixdev,sizeof(mixdev),"%s",caps.szPname);
        }
    }
#endif
}

static void * winsnd_thread(void *p){
	MSSndCard *card=(MSSndCard*)p;
	WinSndData *d=(WinSndData*)card->data;
	int bsize=d->rate/8000 * 320;
	uint8_t *rtmpbuff=NULL;
	uint8_t *wtmpbuff=NULL;
	int err;

	MMRESULT mr = NOERROR;
    int pos_whdr=0;

	d->stat_input=0;
	d->stat_output=0;
	d->stat_notplayed=0;
	d->sound_err=winsnd_open(d, d->devid, d->bits,d->stereo,d->rate,&bsize);
	if (d->sound_err==0){
		rtmpbuff=(uint8_t*)alloca(bsize);
		wtmpbuff=(uint8_t*)alloca(bsize);
	}
	while(d->read_started || d->write_started){
		if (d->sound_err==0){
			if (d->write_started){
#if 0
                if (d->stat_output>0 && d->buffer_playing==0)
				{
                    ms_error("No data currently playing in sound card" );
				}
				if (d->stat_output>0 && (d->stat_input-d->stat_output>10 || d->stat_input-d->stat_output<-10))
                    ms_error("Not perfectly synchronized (input-output=%i)", d->stat_input-d->stat_output);
#endif

				while (d->buffer_playing<6 && d->buffer_playing<MAX_WAVEHDR)
				{
					ms_mutex_lock(&d->mutex);
				    err=ms_bufferizer_read(d->bufferizer,wtmpbuff,bsize);
					ms_mutex_unlock(&d->mutex);
				    if (err!=bsize)
						break;

					ms_mutex_lock(&d->mutex);
                    /* write to sound devide! */
                    memcpy (d->waveouthdr[pos_whdr].lpData, wtmpbuff, bsize);

                    mr = waveOutWrite (d->waveoutdev,
                        &(d->waveouthdr[pos_whdr]),
                        sizeof (d->waveouthdr[pos_whdr]));

                    if (mr != MMSYSERR_NOERROR)
                    {
                        if (mr == WAVERR_STILLPLAYING)
                        {
                            /* retry later */
                            /* data should go back to queue */
                            /* TODO */
                            ms_warning("sound device write STILL_PLAYING (waveOutWrite:0x%i)", mr);
                        }
                        else
                        {
                            ms_warning("sound device write returned (waveOutWrite:0x%i)", mr);
                        }
                    }
                    else
                    {
                        d->buffer_playing++;
                        pos_whdr++;
                        if (pos_whdr == MAX_WAVEHDR)
                            pos_whdr = 0;   /* loop over the prepared blocks */
                    }
					ms_mutex_unlock(&d->mutex);


				    if (err<0){
#if !defined(_WIN32_WCE)
					    ms_warning("Fail to write %i bytes from soundcard: %s",
						    bsize,strerror(errno));
#else
					    ms_warning("Fail to write %i bytes from soundcard: %i",
						    bsize,WSAGetLastError());
#endif
				    }
				}

                if (d->buffer_playing==6 || d->buffer_playing==MAX_WAVEHDR)
                {
					int discarded=0;
					ms_mutex_lock(&d->mutex);
					while (d->bufferizer->size>=bsize){
						discarded++;
						d->stat_notplayed++;
					    err=ms_bufferizer_read(d->bufferizer,wtmpbuff,bsize);
					}
					ms_mutex_unlock(&d->mutex);
					if (discarded>0)
						ms_error("Extra data for sound card removed (%ims), (playing: %i) (input-output: %i)", (discarded*20*320)/320, d->buffer_playing, d->stat_input - d->stat_output);
				}
#if !defined(_WIN32_WCE)
				Sleep(5);
#endif
#if defined(_WIN32_WCE)
				Sleep(10);
#endif
			}else {
				int discarded=0;
				/* don't think this is usefull, anyway... */
				ms_mutex_lock(&d->mutex);
				while (d->bufferizer->size>=bsize){
					discarded++;
				    err=ms_bufferizer_read(d->bufferizer,wtmpbuff,bsize);
				}
				ms_mutex_unlock(&d->mutex);
				if (discarded>0)
					ms_error("Extra data for sound card removed (%ims), (playing: %i) (input-output: %i)", (discarded*20)/320, d->buffer_playing, d->stat_input - d->stat_output);
			    Sleep(10);
            }
		}else Sleep(10);
	}
	if (d->sound_err==0) {
        int i;
        int count=0;
        /* close sound card */
		ms_error("Shutting down sound device (playing: %i) (input-output: %i) (notplayed: %i)", d->buffer_playing, d->stat_input - d->stat_output, d->stat_notplayed);

        /* unprepare buffer */
        for (i = 0; i < MAX_WAVEHDR; i++)
        {
            int counttry=0;
            for (counttry=0;counttry<10;counttry++)
            {
                mr = waveInUnprepareHeader (d->waveindev,
                                        &(d->waveinhdr[i]),
                                        sizeof (d->waveinhdr[i]));
                if (mr != MMSYSERR_NOERROR)
                {
                    ms_error("Failed to unprepared %i buffer from sound card (waveInUnprepareHeader:0x%i", count, mr);
                    Sleep (20);
                } else
                {
                    count++;
        		    ms_message("successfully unprepared %i buffer from sound card.", count);
                    break;
                }
            }
        }
		ms_warning("unprepared %i buffer from sound card.", count);

        mr = waveInStop (d->waveindev);
        if (mr != MMSYSERR_NOERROR)
        {
        	ms_error("failed to stop recording sound card (waveInStop:0x%i)", mr);
        } else
        {
        	ms_message("successfully stopped recording sound card");
        }

        mr = waveInReset (d->waveindev);
        if (mr != MMSYSERR_NOERROR)
        {
        	ms_warning("failed to reset recording sound card (waveInReset:0x%i)", mr);
        } else
        {
        	ms_message("successful reset of recording sound card");
        }

        mr = waveInClose (d->waveindev);
        if (mr != MMSYSERR_NOERROR)
        {
        	ms_warning("failed to close recording sound card (waveInClose:0x%i)", mr);
        } else
        {
        	ms_message("successfully closed recording sound card");
        }
		d->sound_err=-1;
	}
	d->stat_input=0;
	d->stat_output=0;
	d->stat_notplayed=0;
	return NULL;
}

static void winsnd_start_r(MSSndCard *card){
	WinSndData *d=(WinSndData*)card->data;
	if (d->read_started==FALSE && d->write_started==FALSE){
		d->read_started=TRUE;
		ms_thread_create(&d->thread,NULL,winsnd_thread,card);
	}else d->read_started=TRUE;
}

static void winsnd_stop_r(MSSndCard *card){
	WinSndData *d=(WinSndData*)card->data;
	d->read_started=FALSE;
	if (d->write_started==FALSE){
		ms_thread_join(d->thread,NULL);
	}
}

static void winsnd_start_w(MSSndCard *card){
	WinSndData *d=(WinSndData*)card->data;
	if (d->read_started==FALSE && d->write_started==FALSE){
		d->write_started=TRUE;
		ms_thread_create(&d->thread,NULL,winsnd_thread,card);
	}else{
		d->write_started=TRUE;
	}
}

static void winsnd_stop_w(MSSndCard *card){
	WinSndData *d=(WinSndData*)card->data;
	d->write_started=FALSE;
	if (d->read_started==FALSE){
		ms_thread_join(d->thread,NULL);
	}
#ifdef CONTROLVOLUME
	waveOutSetVolume(d->waveoutdev, d->dwOldVolume);
#endif
}

static mblk_t *winsnd_get(MSSndCard *card){
	WinSndData *d=(WinSndData*)card->data;
	mblk_t *m;
	ms_mutex_lock(&d->mutex);
	m=getq(&d->rq);
	ms_mutex_unlock(&d->mutex);
	return m;
}

static void winsnd_put(MSSndCard *card, mblk_t *m){
	WinSndData *d=(WinSndData*)card->data;
	ms_mutex_lock(&d->mutex);
	ms_bufferizer_put(d->bufferizer,m);
	ms_mutex_unlock(&d->mutex);
}


static void winsnd_read_preprocess(MSFilter *f){
	MSSndCard *card=(MSSndCard*)f->data;
	winsnd_start_r(card);
	ms_ticker_set_time_func(f->ticker,winsnd_get_cur_time,card->data);
}

static void winsnd_read_postprocess(MSFilter *f){
	MSSndCard *card=(MSSndCard*)f->data;
	ms_ticker_set_time_func(f->ticker,NULL,NULL);
	winsnd_stop_r(card);
}

static void winsnd_read_process(MSFilter *f){
	MSSndCard *card=(MSSndCard*)f->data;
	mblk_t *m;
	while((m=winsnd_get(card))!=NULL){
		ms_queue_put(f->outputs[0],m);
	}
}

static void winsnd_write_preprocess(MSFilter *f){
	MSSndCard *card=(MSSndCard*)f->data;
	winsnd_start_w(card);
}

static void winsnd_write_postprocess(MSFilter *f){
	MSSndCard *card=(MSSndCard*)f->data;
	winsnd_stop_w(card);
}

static void winsnd_write_process(MSFilter *f){
	MSSndCard *card=(MSSndCard*)f->data;
	mblk_t *m;

	while((m=ms_queue_get(f->inputs[0]))!=NULL){
		winsnd_put(card,m);
	}
}

static int set_rate(MSFilter *f, void *arg){
	MSSndCard *card=(MSSndCard*)f->data;
	WinSndData *d=(WinSndData*)card->data;
	d->rate=*((int*)arg);
	return 0;
}

static int set_nchannels(MSFilter *f, void *arg){
	MSSndCard *card=(MSSndCard*)f->data;
	WinSndData *d=(WinSndData*)card->data;
	d->stereo=(*((int*)arg)==2);
	return 0;
}

static int winsnd_get_stat_input(MSFilter *f, void *arg){
	MSSndCard *card=(MSSndCard*)f->data;
	WinSndData *d=(WinSndData*)card->data;

	return d->stat_input;
}

static int winsnd_get_stat_ouptut(MSFilter *f, void *arg){
	MSSndCard *card=(MSSndCard*)f->data;
	WinSndData *d=(WinSndData*)card->data;

	return d->stat_output;
}

static int winsnd_get_stat_discarded(MSFilter *f, void *arg){
	MSSndCard *card=(MSSndCard*)f->data;
	WinSndData *d=(WinSndData*)card->data;

	return d->stat_notplayed;
}

static MSFilterMethod winsnd_methods[]={
	{	MS_FILTER_SET_SAMPLE_RATE	, set_rate	},
	{	MS_FILTER_SET_NCHANNELS		, set_nchannels	},
	{	MS_FILTER_GET_STAT_INPUT, winsnd_get_stat_input },
	{	MS_FILTER_GET_STAT_OUTPUT, winsnd_get_stat_ouptut },
	{	MS_FILTER_GET_STAT_DISCARDED, winsnd_get_stat_discarded },
	{	0				, NULL		}
};

MSFilterDesc winsnd_read_desc={
	MS_WINSND_READ_ID,
	"MSWinSndRead",
	"Sound capture filter for Windows Sound drivers",
	MS_FILTER_OTHER,
	NULL,
    0,
	1,
	NULL,
    winsnd_read_preprocess,
	winsnd_read_process,
	winsnd_read_postprocess,
    NULL,
	winsnd_methods
};


MSFilterDesc winsnd_write_desc={
	MS_WINSND_WRITE_ID,
	"MSWinSndWrite",
	"Sound playback filter for Windows Sound drivers",
	MS_FILTER_OTHER,
	NULL,
    1,
	0,
	NULL,
    winsnd_write_preprocess,
	winsnd_write_process,
	winsnd_write_postprocess,
	NULL,
    winsnd_methods
};

MSFilter *ms_winsnd_read_new(MSSndCard *card){
	MSFilter *f=ms_filter_new_from_desc(&winsnd_read_desc);
	f->data=card;
	return f;
}


MSFilter *ms_winsnd_write_new(MSSndCard *card){
	MSFilter *f=ms_filter_new_from_desc(&winsnd_write_desc);
	f->data=card;
	return f;
}

MS_FILTER_DESC_EXPORT(winsnd_read_desc)
MS_FILTER_DESC_EXPORT(winsnd_write_desc)
