Fixed bug in capture stop. Only current header should be returned to

[wine/testsucceed.git] / dlls / winmm / wineoss / audio.c

/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
 * Sample Wine Driver for Open Sound System (featured in Linux and FreeBSD)
 *
 * Copyright 1994 Martin Ayotte
 *           1999 Eric Pouech (async playing in waveOut/waveIn)
 *           2000 Eric Pouech (loops in waveOut)
 *           2002 Eric Pouech (full duplex)
 *
 * 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 2.1 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
 */
/*
 * FIXME:
 *      pause in waveOut does not work correctly in loop mode
 *      Direct Sound Capture driver does not work (not complete yet)
 */

/*#define EMULATE_SB16*/

/* unless someone makes a wineserver kernel module, Unix pipes are faster than win32 events */
#define USE_PIPE_SYNC

/* an exact wodGetPosition is usually not worth the extra context switches,
 * as we're going to have near fragment accuracy anyway */
/* #define EXACT_WODPOSITION */

#include "config.h"
#include "wine/port.h"

#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#ifdef HAVE_SYS_POLL_H
# include <sys/poll.h>
#endif

#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winerror.h"
#include "wine/winuser16.h"
#include "mmddk.h"
#include "dsound.h"
#include "dsdriver.h"
#include "oss.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(wave);

/* Allow 1% deviation for sample rates (some ES137x cards) */
#define NEAR_MATCH(rate1,rate2) (((100*((int)(rate1)-(int)(rate2)))/(rate1))==0)

#ifdef HAVE_OSS

#define MAX_WAVEDRV     (6)

/* state diagram for waveOut writing:
 *
 * +---------+-------------+---------------+---------------------------------+
 * |  state  |  function   |     event     |            new state            |
 * +---------+-------------+---------------+---------------------------------+
 * |         | open()      |               | STOPPED                         |
 * | PAUSED  | write()     |               | PAUSED                          |
 * | STOPPED | write()     | <thrd create> | PLAYING                         |
 * | PLAYING | write()     | HEADER        | PLAYING                         |
 * | (other) | write()     | <error>       |                                 |
 * | (any)   | pause()     | PAUSING       | PAUSED                          |
 * | PAUSED  | restart()   | RESTARTING    | PLAYING (if no thrd => STOPPED) |
 * | (any)   | reset()     | RESETTING     | STOPPED                         |
 * | (any)   | close()     | CLOSING       | CLOSED                          |
 * +---------+-------------+---------------+---------------------------------+
 */

/* states of the playing device */
#define WINE_WS_PLAYING         0
#define WINE_WS_PAUSED          1
#define WINE_WS_STOPPED         2
#define WINE_WS_CLOSED          3

/* events to be send to device */
enum win_wm_message {
    WINE_WM_PAUSING = WM_USER + 1, WINE_WM_RESTARTING, WINE_WM_RESETTING, WINE_WM_HEADER,
    WINE_WM_UPDATE, WINE_WM_BREAKLOOP, WINE_WM_CLOSING, WINE_WM_STARTING, WINE_WM_STOPPING
};

#ifdef USE_PIPE_SYNC
#define SIGNAL_OMR(omr) do { int x = 0; write((omr)->msg_pipe[1], &x, sizeof(x)); } while (0)
#define CLEAR_OMR(omr) do { int x = 0; read((omr)->msg_pipe[0], &x, sizeof(x)); } while (0)
#define RESET_OMR(omr) do { } while (0)
#define WAIT_OMR(omr, sleep) \
  do { struct pollfd pfd; pfd.fd = (omr)->msg_pipe[0]; \
       pfd.events = POLLIN; poll(&pfd, 1, sleep); } while (0)
#else
#define SIGNAL_OMR(omr) do { SetEvent((omr)->msg_event); } while (0)
#define CLEAR_OMR(omr) do { } while (0)
#define RESET_OMR(omr) do { ResetEvent((omr)->msg_event); } while (0)
#define WAIT_OMR(omr, sleep) \
  do { WaitForSingleObject((omr)->msg_event, sleep); } while (0)
#endif

typedef struct {
    enum win_wm_message         msg;    /* message identifier */
    DWORD                       param;  /* parameter for this message */
    HANDLE                      hEvent; /* if message is synchronous, handle of event for synchro */
} OSS_MSG;

/* implement an in-process message ring for better performance
 * (compared to passing thru the server)
 * this ring will be used by the input (resp output) record (resp playback) routine
 */
#define OSS_RING_BUFFER_INCREMENT       64
typedef struct {
    int                         ring_buffer_size;
    OSS_MSG                     * messages;
    int                         msg_tosave;
    int                         msg_toget;
#ifdef USE_PIPE_SYNC
    int                         msg_pipe[2];
#else
    HANDLE                      msg_event;
#endif
    CRITICAL_SECTION            msg_crst;
} OSS_MSG_RING;

typedef struct tagOSS_DEVICE {
    char                        dev_name[32];
    char                        mixer_name[32];
    unsigned                    open_count;
    WAVEOUTCAPSA                out_caps;
    WAVEINCAPSA                 in_caps;
    DWORD                       in_caps_support;
    unsigned                    open_access;
    int                         fd;
    DWORD                       owner_tid;
    int                         sample_rate;
    int                         stereo;
    int                         format;
    unsigned                    audio_fragment;
    BOOL                        full_duplex;
    BOOL                        bTriggerSupport;
    BOOL                        bOutputEnabled;
    BOOL                        bInputEnabled;
    DSDRIVERDESC                ds_desc;
    DSDRIVERCAPS                ds_caps;
    DSCDRIVERCAPS               dsc_caps;
    GUID                        ds_guid;
    GUID                        dsc_guid;
} OSS_DEVICE;

static OSS_DEVICE   OSS_Devices[MAX_WAVEDRV];

typedef struct {
    OSS_DEVICE*                 ossdev;
    volatile int                state;                  /* one of the WINE_WS_ manifest constants */
    WAVEOPENDESC                waveDesc;
    WORD                        wFlags;
    PCMWAVEFORMAT               format;
    DWORD                       volume;

    /* OSS information */
    DWORD                       dwFragmentSize;         /* size of OSS buffer fragment */
    DWORD                       dwBufferSize;           /* size of whole OSS buffer in bytes */
    LPWAVEHDR                   lpQueuePtr;             /* start of queued WAVEHDRs (waiting to be notified) */
    LPWAVEHDR                   lpPlayPtr;              /* start of not yet fully played buffers */
    DWORD                       dwPartialOffset;        /* Offset of not yet written bytes in lpPlayPtr */

    LPWAVEHDR                   lpLoopPtr;              /* pointer of first buffer in loop, if any */
    DWORD                       dwLoops;                /* private copy of loop counter */

    DWORD                       dwPlayedTotal;          /* number of bytes actually played since opening */
    DWORD                       dwWrittenTotal;         /* number of bytes written to OSS buffer since opening */
    BOOL                        bNeedPost;              /* whether audio still needs to be physically started */

    /* synchronization stuff */
    HANDLE                      hStartUpEvent;
    HANDLE                      hThread;
    DWORD                       dwThreadID;
    OSS_MSG_RING                msgRing;

    /* DirectSound stuff */
    LPBYTE                      mapping;
    DWORD                       maplen;
} WINE_WAVEOUT;

typedef struct {
    OSS_DEVICE*                 ossdev;
    volatile int                state;
    DWORD                       dwFragmentSize;         /* OpenSound '/dev/dsp' give us that size */
    WAVEOPENDESC                waveDesc;
    WORD                        wFlags;
    PCMWAVEFORMAT               format;
    LPWAVEHDR                   lpQueuePtr;
    DWORD                       dwTotalRecorded;

    /* synchronization stuff */
    HANDLE                      hThread;
    DWORD                       dwThreadID;
    HANDLE                      hStartUpEvent;
    OSS_MSG_RING                msgRing;

    /* DirectSound stuff */
    LPBYTE                      mapping;
    DWORD                       maplen;
} WINE_WAVEIN;

static WINE_WAVEOUT     WOutDev   [MAX_WAVEDRV];
static WINE_WAVEIN      WInDev    [MAX_WAVEDRV];
static unsigned         numOutDev;
static unsigned         numInDev;

static DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv);
static DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv);
static DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc);
static DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc);
static DWORD wodDsGuid(UINT wDevID, LPGUID pGuid);
static DWORD widDsGuid(UINT wDevID, LPGUID pGuid);

/* These strings used only for tracing */
static const char *wodPlayerCmdString[] = {
    "WINE_WM_PAUSING",
    "WINE_WM_RESTARTING",
    "WINE_WM_RESETTING",
    "WINE_WM_HEADER",
    "WINE_WM_UPDATE",
    "WINE_WM_BREAKLOOP",
    "WINE_WM_CLOSING",
    "WINE_WM_STARTING",
    "WINE_WM_STOPPING",
};

static int getEnables(OSS_DEVICE *ossdev)
{
    return ( (ossdev->bOutputEnabled ? PCM_ENABLE_OUTPUT : 0) | 
             (ossdev->bInputEnabled  ? PCM_ENABLE_INPUT  : 0) );
}

static DWORD wdDevInterfaceSize(UINT wDevID, LPDWORD dwParam1)
{
    TRACE("(%u, %p)\n", wDevID, dwParam1);

    *dwParam1 = MultiByteToWideChar(CP_ACP, 0, OSS_Devices[wDevID].dev_name, -1,
                                    NULL, 0 ) * sizeof(WCHAR);
    return MMSYSERR_NOERROR;
}

static DWORD wdDevInterface(UINT wDevID, PWCHAR dwParam1, DWORD dwParam2)
{
    if (dwParam2 >= MultiByteToWideChar(CP_ACP, 0, OSS_Devices[wDevID].dev_name, -1,
                                        NULL, 0 ) * sizeof(WCHAR))
    {
        MultiByteToWideChar(CP_ACP, 0, OSS_Devices[wDevID].dev_name, -1,
                            dwParam1, dwParam2 / sizeof(WCHAR));
        return MMSYSERR_NOERROR;
    }

    return MMSYSERR_INVALPARAM;
}

/*======================================================================*
 *                  Low level WAVE implementation                       *
 *======================================================================*/

/******************************************************************
 *              OSS_RawOpenDevice
 *
 * Low level device opening (from values stored in ossdev)
 */
static DWORD      OSS_RawOpenDevice(OSS_DEVICE* ossdev, int strict_format)
{
    int fd, val, rc;
    TRACE("(%p,%d)\n",ossdev,strict_format);

    if ((fd = open(ossdev->dev_name, ossdev->open_access|O_NDELAY, 0)) == -1)
    {
        WARN("Couldn't open %s (%s)\n", ossdev->dev_name, strerror(errno));
        return (errno == EBUSY) ? MMSYSERR_ALLOCATED : MMSYSERR_ERROR;
    }
    fcntl(fd, F_SETFD, 1); /* set close on exec flag */
    /* turn full duplex on if it has been requested */
    if (ossdev->open_access == O_RDWR && ossdev->full_duplex) {
        rc = ioctl(fd, SNDCTL_DSP_SETDUPLEX, 0);
        /* on *BSD, as full duplex is always enabled by default, this ioctl
         * will fail with EINVAL
         * so, we don't consider EINVAL an error here
         */
        if (rc != 0 && errno != EINVAL) {
            ERR("ioctl(%s, SNDCTL_DSP_SETDUPLEX) failed (%s)\n", ossdev->dev_name, strerror(errno));
            goto error2;
        }
    }

    if (ossdev->audio_fragment) {
        rc = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &ossdev->audio_fragment);
        if (rc != 0) {
            ERR("ioctl(%s, SNDCTL_DSP_SETFRAGMENT) failed (%s)\n", ossdev->dev_name, strerror(errno));
            goto error2;
        }
    }

    /* First size and stereo then samplerate */
    if (ossdev->format>=0)
    {
        val = ossdev->format;
        rc = ioctl(fd, SNDCTL_DSP_SETFMT, &ossdev->format);
        if (rc != 0 || val != ossdev->format) {
            TRACE("Can't set format to %d (returned %d)\n", val, ossdev->format);
            if (strict_format)
                goto error;
        }
    }
    if (ossdev->stereo>=0)
    {
        val = ossdev->stereo;
        rc = ioctl(fd, SNDCTL_DSP_STEREO, &ossdev->stereo);
        if (rc != 0 || val != ossdev->stereo) {
            TRACE("Can't set stereo to %u (returned %d)\n", val, ossdev->stereo);
            if (strict_format)
                goto error;
        }
    }
    if (ossdev->sample_rate>=0)
    {
        val = ossdev->sample_rate;
        rc = ioctl(fd, SNDCTL_DSP_SPEED, &ossdev->sample_rate);
        if (rc != 0 || !NEAR_MATCH(val, ossdev->sample_rate)) {
            TRACE("Can't set sample_rate to %u (returned %d)\n", val, ossdev->sample_rate);
            if (strict_format)
                goto error;
        }
    }
    ossdev->fd = fd;

    if (ossdev->bTriggerSupport) {
        int trigger;
        rc = ioctl(fd, SNDCTL_DSP_GETTRIGGER, &trigger);
        if (rc != 0) {
            ERR("ioctl(%s, SNDCTL_DSP_GETTRIGGER) failed (%s)\n", 
                ossdev->dev_name, strerror(errno));
            goto error;
        }
        
        ossdev->bOutputEnabled = ((trigger & PCM_ENABLE_OUTPUT) == PCM_ENABLE_OUTPUT);
        ossdev->bInputEnabled  = ((trigger & PCM_ENABLE_INPUT) == PCM_ENABLE_INPUT);
    } else {
        ossdev->bOutputEnabled = TRUE;  /* OSS enables by default */
        ossdev->bInputEnabled  = TRUE;  /* OSS enables by default */
    }

    return MMSYSERR_NOERROR;

error:
    close(fd);
    return WAVERR_BADFORMAT;
error2:
    close(fd);
    return MMSYSERR_ERROR;
}

/******************************************************************
 *              OSS_OpenDevice
 *
 * since OSS has poor capabilities in full duplex, we try here to let a program
 * open the device for both waveout and wavein streams...
 * this is hackish, but it's the way OSS interface is done...
 */
static DWORD OSS_OpenDevice(OSS_DEVICE* ossdev, unsigned req_access,
                            int* frag, int strict_format,
                            int sample_rate, int stereo, int fmt)
{
    DWORD       ret;
    TRACE("(%p,%u,%p,%d,%d,%d,%x)\n",ossdev,req_access,frag,strict_format,sample_rate,stereo,fmt);

    if (ossdev->full_duplex && (req_access == O_RDONLY || req_access == O_WRONLY))
        req_access = O_RDWR;

    /* FIXME: this should be protected, and it also contains a race with OSS_CloseDevice */
    if (ossdev->open_count == 0)
    {
        if (access(ossdev->dev_name, 0) != 0) return MMSYSERR_NODRIVER;

        ossdev->audio_fragment = (frag) ? *frag : 0;
        ossdev->sample_rate = sample_rate;
        ossdev->stereo = stereo;
        ossdev->format = fmt;
        ossdev->open_access = req_access;
        ossdev->owner_tid = GetCurrentThreadId();

        if ((ret = OSS_RawOpenDevice(ossdev,strict_format)) != MMSYSERR_NOERROR) return ret;
    }
    else
    {
        /* check we really open with the same parameters */
        if (ossdev->open_access != req_access)
        {
            ERR("FullDuplex: Mismatch in access. Your sound device is not full duplex capable.\n");
            return WAVERR_BADFORMAT;
        }

        /* check if the audio parameters are the same */
        if (ossdev->sample_rate != sample_rate ||
            ossdev->stereo != stereo ||
            ossdev->format != fmt)
        {
            /* This is not a fatal error because MSACM might do the remapping */ 
            WARN("FullDuplex: mismatch in PCM parameters for input and output\n"
                 "OSS doesn't allow us different parameters\n"
                 "audio_frag(%x/%x) sample_rate(%d/%d) stereo(%d/%d) fmt(%d/%d)\n",
                 ossdev->audio_fragment, frag ? *frag : 0,
                 ossdev->sample_rate, sample_rate,
                 ossdev->stereo, stereo,
                 ossdev->format, fmt);
            return WAVERR_BADFORMAT;
        }
        /* check if the fragment sizes are the same */
        if (ossdev->audio_fragment != (frag ? *frag : 0) ) {
            ERR("FullDuplex: Playback and Capture hardware acceleration levels are different.\n"
                "Use: \"HardwareAcceleration\" = \"Emulation\" in the [dsound] section of your config file.\n");
            return WAVERR_BADFORMAT;
        }
        if (GetCurrentThreadId() != ossdev->owner_tid)
        {
            WARN("Another thread is trying to access audio...\n");
            return MMSYSERR_ERROR;
        }
    }

    ossdev->open_count++;

    return MMSYSERR_NOERROR;
}

/******************************************************************
 *              OSS_CloseDevice
 *
 *
 */
static void     OSS_CloseDevice(OSS_DEVICE* ossdev)
{
    TRACE("(%p)\n",ossdev);
    if (ossdev->open_count>0) {
        ossdev->open_count--;
    } else {
        WARN("OSS_CloseDevice called too many times\n");
    }
    if (ossdev->open_count == 0)
    {
       /* reset the device before we close it in case it is in a bad state */
       ioctl(ossdev->fd, SNDCTL_DSP_RESET, 0);
       close(ossdev->fd);
    }
}

/******************************************************************
 *              OSS_ResetDevice
 *
 * Resets the device. OSS Commercial requires the device to be closed
 * after a SNDCTL_DSP_RESET ioctl call... this function implements
 * this behavior...
 * FIXME: This causes problems when doing full duplex so we really
 * only reset when not doing full duplex. We need to do this better
 * someday. 
 */
static DWORD     OSS_ResetDevice(OSS_DEVICE* ossdev)
{
    DWORD       ret = MMSYSERR_NOERROR;
    int         old_fd = ossdev->fd;
    TRACE("(%p)\n", ossdev);

    if (ossdev->open_count == 1) {
        if (ioctl(ossdev->fd, SNDCTL_DSP_RESET, NULL) == -1) 
        {
            perror("ioctl SNDCTL_DSP_RESET");
            return -1;
        }
        close(ossdev->fd);
        ret = OSS_RawOpenDevice(ossdev, 1);
        TRACE("Changing fd from %d to %d\n", old_fd, ossdev->fd);
    } else 
        WARN("Not resetting device because it is in full duplex mode!\n");
    
    return ret;
}

const static int win_std_oss_fmts[2]={AFMT_U8,AFMT_S16_LE};
const static int win_std_rates[5]={96000,48000,44100,22050,11025};
const static int win_std_formats[2][2][5]=
    {{{WAVE_FORMAT_96M08, WAVE_FORMAT_48M08, WAVE_FORMAT_4M08,
       WAVE_FORMAT_2M08,  WAVE_FORMAT_1M08},
      {WAVE_FORMAT_96S08, WAVE_FORMAT_48S08, WAVE_FORMAT_4S08,
       WAVE_FORMAT_2S08,  WAVE_FORMAT_1S08}},
     {{WAVE_FORMAT_96M16, WAVE_FORMAT_48M16, WAVE_FORMAT_4M16,
       WAVE_FORMAT_2M16,  WAVE_FORMAT_1M16},
      {WAVE_FORMAT_96S16, WAVE_FORMAT_48S16, WAVE_FORMAT_4S16,
       WAVE_FORMAT_2S16,  WAVE_FORMAT_1S16}},
    };

/******************************************************************
 *              OSS_WaveOutInit
 *
 *
 */
static BOOL OSS_WaveOutInit(OSS_DEVICE* ossdev)
{
    int rc,arg;
    int f,c,r;
    TRACE("(%p) %s\n", ossdev, ossdev->dev_name);

    if (OSS_OpenDevice(ossdev, O_WRONLY, NULL, 0,-1,-1,-1) != 0) return FALSE;
    ioctl(ossdev->fd, SNDCTL_DSP_RESET, 0);

#ifdef SOUND_MIXER_INFO
    {
        int mixer;
        if ((mixer = open(ossdev->mixer_name, O_RDONLY|O_NDELAY)) >= 0) {
            mixer_info info;
            if (ioctl(mixer, SOUND_MIXER_INFO, &info) >= 0) {
                close(mixer);
                strncpy(ossdev->ds_desc.szDesc, info.name, sizeof(info.name));
                strcpy(ossdev->ds_desc.szDrvName, "wineoss.drv");
                strncpy(ossdev->out_caps.szPname, info.name, sizeof(info.name));
                TRACE("%s\n", ossdev->ds_desc.szDesc);
            } else {
                ERR("%s: can't read info!\n", ossdev->mixer_name);
                OSS_CloseDevice(ossdev);
                close(mixer);
                return FALSE;
            }
        } else {
            ERR("%s: %s\n", ossdev->mixer_name , strerror( errno ));
            OSS_CloseDevice(ossdev);
            return FALSE;
        }
    }
#endif /* SOUND_MIXER_INFO */

    /* FIXME: some programs compare this string against the content of the
     * registry for MM drivers. The names have to match in order for the
     * program to work (e.g. MS win9x mplayer.exe)
     */
#ifdef EMULATE_SB16
    ossdev->out_caps.wMid = 0x0002;
    ossdev->out_caps.wPid = 0x0104;
    strcpy(ossdev->out_caps.szPname, "SB16 Wave Out");
#else
    ossdev->out_caps.wMid = 0x00FF; /* Manufac ID */
    ossdev->out_caps.wPid = 0x0001; /* Product ID */
#endif
    ossdev->out_caps.vDriverVersion = 0x0100;
    ossdev->out_caps.wChannels = 1;
    ossdev->out_caps.dwFormats = 0x00000000;
    ossdev->out_caps.wReserved1 = 0;
    ossdev->out_caps.dwSupport = WAVECAPS_VOLUME;

    /* direct sound caps */
    ossdev->ds_caps.dwFlags = 0;
    ossdev->ds_caps.dwPrimaryBuffers = 1;
    ossdev->ds_caps.dwMinSecondarySampleRate = DSBFREQUENCY_MIN;
    ossdev->ds_caps.dwMaxSecondarySampleRate = DSBFREQUENCY_MAX;
                                                                                
    if (WINE_TRACE_ON(wave)) {
        /* Note that this only reports the formats supported by the hardware.
         * The driver may support other formats and do the conversions in
         * software which is why we don't use this value
         */
        int oss_mask;
        ioctl(ossdev->fd, SNDCTL_DSP_GETFMTS, &oss_mask);
        TRACE("OSS dsp out mask=%08x\n", oss_mask);
    }

    /* We must first set the format and the stereo mode as some sound cards
     * may support 44kHz mono but not 44kHz stereo. Also we must
     * systematically check the return value of these ioctls as they will
     * always succeed (see OSS Linux) but will modify the parameter to match
     * whatever they support. The OSS specs also say we must first set the
     * sample size, then the stereo and then the sample rate.
     */
    for (f=0;f<2;f++) {
        arg=win_std_oss_fmts[f];
        rc=ioctl(ossdev->fd, SNDCTL_DSP_SAMPLESIZE, &arg);
        if (rc!=0 || arg!=win_std_oss_fmts[f]) {
            TRACE("DSP_SAMPLESIZE: rc=%d returned %d for %d\n",
                  rc,arg,win_std_oss_fmts[f]);
            continue;
        }
        if (f == 0) 
            ossdev->ds_caps.dwFlags |= DSCAPS_PRIMARY8BIT;
        else if (f == 1)
            ossdev->ds_caps.dwFlags |= DSCAPS_PRIMARY16BIT;

        for (c=0;c<2;c++) {
            arg=c;
            rc=ioctl(ossdev->fd, SNDCTL_DSP_STEREO, &arg);
            if (rc!=0 || arg!=c) {
                TRACE("DSP_STEREO: rc=%d returned %d for %d\n",rc,arg,c);
                continue;
            }
            if (c == 0) {
                ossdev->ds_caps.dwFlags |= DSCAPS_PRIMARYMONO;
            } else if (c==1) {
                ossdev->out_caps.wChannels=2;
                ossdev->out_caps.dwSupport|=WAVECAPS_LRVOLUME;
                ossdev->ds_caps.dwFlags |= DSCAPS_PRIMARYSTEREO;
            }

            for (r=0;r<sizeof(win_std_rates)/sizeof(*win_std_rates);r++) {
                arg=win_std_rates[r];
                rc=ioctl(ossdev->fd, SNDCTL_DSP_SPEED, &arg);
                TRACE("DSP_SPEED: rc=%d returned %d for %dx%dx%d\n",
                      rc,arg,win_std_rates[r],win_std_oss_fmts[f],c+1);
                if (rc==0 && arg!=0 && NEAR_MATCH(arg,win_std_rates[r]))
                    ossdev->out_caps.dwFormats|=win_std_formats[f][c][r];
            }
        }
    }

    if (ioctl(ossdev->fd, SNDCTL_DSP_GETCAPS, &arg) == 0) {
        TRACE("OSS dsp out caps=%08X\n", arg);
        if (arg & DSP_CAP_TRIGGER)
            ossdev->bTriggerSupport = TRUE;
        if ((arg & DSP_CAP_REALTIME) && !(arg & DSP_CAP_BATCH)) {
            ossdev->out_caps.dwSupport |= WAVECAPS_SAMPLEACCURATE;
        }
        /* well, might as well use the DirectSound cap flag for something */
        if ((arg & DSP_CAP_TRIGGER) && (arg & DSP_CAP_MMAP) &&
            !(arg & DSP_CAP_BATCH)) {
            ossdev->out_caps.dwSupport |= WAVECAPS_DIRECTSOUND;
        } else {
            ossdev->ds_caps.dwFlags |= DSCAPS_EMULDRIVER;
        }
    }
    OSS_CloseDevice(ossdev);
    TRACE("out dwFormats = %08lX, dwSupport = %08lX\n",
          ossdev->out_caps.dwFormats, ossdev->out_caps.dwSupport);
    return TRUE;
}

/******************************************************************
 *              OSS_WaveInInit
 *
 *
 */
static BOOL OSS_WaveInInit(OSS_DEVICE* ossdev)
{
    int rc,arg;
    int f,c,r;
    TRACE("(%p) %s\n", ossdev, ossdev->dev_name);

    if (OSS_OpenDevice(ossdev, O_RDONLY, NULL, 0,-1,-1,-1) != 0)
        return FALSE;

    ioctl(ossdev->fd, SNDCTL_DSP_RESET, 0);

#ifdef SOUND_MIXER_INFO
    {
        int mixer;
        if ((mixer = open(ossdev->mixer_name, O_RDONLY|O_NDELAY)) >= 0) {
            mixer_info info;
            if (ioctl(mixer, SOUND_MIXER_INFO, &info) >= 0) {
                close(mixer);
                strncpy(ossdev->in_caps.szPname, info.name, sizeof(info.name));
                TRACE("%s\n", ossdev->ds_desc.szDesc);
            } else {
                ERR("%s: can't read info!\n", ossdev->mixer_name);
                OSS_CloseDevice(ossdev);
                close(mixer);
                return FALSE;
            }
        } else {
            ERR("%s: %s\n", ossdev->mixer_name, strerror(errno));
            OSS_CloseDevice(ossdev);
            return FALSE;
        }
    }
#endif /* SOUND_MIXER_INFO */

    /* See comment in OSS_WaveOutInit */
#ifdef EMULATE_SB16
    ossdev->in_caps.wMid = 0x0002;
    ossdev->in_caps.wPid = 0x0004;
    strcpy(ossdev->in_caps.szPname, "SB16 Wave In");
#else
    ossdev->in_caps.wMid = 0x00FF; /* Manufac ID */
    ossdev->in_caps.wPid = 0x0001; /* Product ID */
#endif
    ossdev->in_caps.dwFormats = 0x00000000;
    ossdev->in_caps.wChannels = 1;
    ossdev->in_caps.wReserved1 = 0;

    /* direct sound caps */
    ossdev->dsc_caps.dwSize = sizeof(ossdev->dsc_caps);
    ossdev->dsc_caps.dwFlags = 0;
    ossdev->dsc_caps.dwFormats = 0x00000000;
    ossdev->dsc_caps.dwChannels = 1;

    if (WINE_TRACE_ON(wave)) {
        /* Note that this only reports the formats supported by the hardware.
         * The driver may support other formats and do the conversions in
         * software which is why we don't use this value
         */
        int oss_mask;
        ioctl(ossdev->fd, SNDCTL_DSP_GETFMTS, &oss_mask);
        TRACE("OSS dsp out mask=%08x\n", oss_mask);
    }

    /* See the comment in OSS_WaveOutInit */
    for (f=0;f<2;f++) {
        arg=win_std_oss_fmts[f];
        rc=ioctl(ossdev->fd, SNDCTL_DSP_SAMPLESIZE, &arg);
        if (rc!=0 || arg!=win_std_oss_fmts[f]) {
            TRACE("DSP_SAMPLESIZE: rc=%d returned 0x%x for 0x%x\n",
                  rc,arg,win_std_oss_fmts[f]);
            continue;
        }

        for (c=0;c<2;c++) {
            arg=c;
            rc=ioctl(ossdev->fd, SNDCTL_DSP_STEREO, &arg);
            if (rc!=0 || arg!=c) {
                TRACE("DSP_STEREO: rc=%d returned %d for %d\n",rc,arg,c);
                continue;
            }
            if (c==1) {
                ossdev->in_caps.wChannels=2;
                ossdev->dsc_caps.dwChannels=2;
            }

            for (r=0;r<sizeof(win_std_rates)/sizeof(*win_std_rates);r++) {
                arg=win_std_rates[r];
                rc=ioctl(ossdev->fd, SNDCTL_DSP_SPEED, &arg);
                TRACE("DSP_SPEED: rc=%d returned %d for %dx%dx%d\n",rc,arg,win_std_rates[r],win_std_oss_fmts[f],c+1);
                if (rc==0 && NEAR_MATCH(arg,win_std_rates[r]))
                    ossdev->in_caps.dwFormats|=win_std_formats[f][c][r];
                    ossdev->dsc_caps.dwFormats|=win_std_formats[f][c][r];
            }
        }
    }

    if (ioctl(ossdev->fd, SNDCTL_DSP_GETCAPS, &arg) == 0) {
        TRACE("OSS dsp in caps=%08X\n", arg);
        if (arg & DSP_CAP_TRIGGER)
            ossdev->bTriggerSupport = TRUE;
        if ((arg & DSP_CAP_TRIGGER) && (arg & DSP_CAP_MMAP) &&
            !(arg & DSP_CAP_BATCH)) {
            /* FIXME: enable the next statement if you want to work on the driver */
#if 0
            ossdev->in_caps_support |= WAVECAPS_DIRECTSOUND;
#endif
        }
        if ((arg & DSP_CAP_REALTIME) && !(arg & DSP_CAP_BATCH))
            ossdev->in_caps_support |= WAVECAPS_SAMPLEACCURATE;
    }
    OSS_CloseDevice(ossdev);
    TRACE("in dwFormats = %08lX\n", ossdev->in_caps.dwFormats);
    return TRUE;
}

/******************************************************************
 *              OSS_WaveFullDuplexInit
 *
 *
 */
static void OSS_WaveFullDuplexInit(OSS_DEVICE* ossdev)
{
    int         caps;
    TRACE("(%p)\n",ossdev);

    if (OSS_OpenDevice(ossdev, O_RDWR, NULL, 0,-1,-1,-1) != 0) return;
    if (ioctl(ossdev->fd, SNDCTL_DSP_GETCAPS, &caps) == 0)
    {
        ossdev->full_duplex = (caps & DSP_CAP_DUPLEX);
    }
    OSS_CloseDevice(ossdev);
}

#define INIT_GUID(guid, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8)      \
        guid.Data1 = l; guid.Data2 = w1; guid.Data3 = w2;               \
        guid.Data4[0] = b1; guid.Data4[1] = b2; guid.Data4[2] = b3;     \
        guid.Data4[3] = b4; guid.Data4[4] = b5; guid.Data4[5] = b6;     \
        guid.Data4[6] = b7; guid.Data4[7] = b8;
/******************************************************************
 *              OSS_WaveInit
 *
 * Initialize internal structures from OSS information
 */
LONG OSS_WaveInit(void)
{
    int         i;
    TRACE("()\n");

    for (i = 0; i < MAX_WAVEDRV; ++i)
    {
        if (i == 0) {
            sprintf((char *)OSS_Devices[i].dev_name, "/dev/dsp");
            sprintf((char *)OSS_Devices[i].mixer_name, "/dev/mixer");
        } else {
            sprintf((char *)OSS_Devices[i].dev_name, "/dev/dsp%d", i);
            sprintf((char *)OSS_Devices[i].mixer_name, "/dev/mixer%d", i);
        }

        INIT_GUID(OSS_Devices[i].ds_guid,  0xbd6dd71a, 0x3deb, 0x11d1, 0xb1, 0x71, 0x00, 0xc0, 0x4f, 0xc2, 0x00, 0x00 + i);
        INIT_GUID(OSS_Devices[i].dsc_guid, 0xbd6dd71b, 0x3deb, 0x11d1, 0xb1, 0x71, 0x00, 0xc0, 0x4f, 0xc2, 0x00, 0x00 + i);
    }

    /* start with output devices */
    for (i = 0; i < MAX_WAVEDRV; ++i)
    {
        if (OSS_WaveOutInit(&OSS_Devices[i]))
        {
            WOutDev[numOutDev].state = WINE_WS_CLOSED;
            WOutDev[numOutDev].ossdev = &OSS_Devices[i];
            WOutDev[numOutDev].volume = 0xffffffff;
            numOutDev++;
        }
    }

    /* then do input devices */
    for (i = 0; i < MAX_WAVEDRV; ++i)
    {
        if (OSS_WaveInInit(&OSS_Devices[i]))
        {
            WInDev[numInDev].state = WINE_WS_CLOSED;
            WInDev[numInDev].ossdev = &OSS_Devices[i];
            numInDev++;
        }
    }

    /* finish with the full duplex bits */
    for (i = 0; i < MAX_WAVEDRV; i++)
        OSS_WaveFullDuplexInit(&OSS_Devices[i]);

    return 0;
}

/******************************************************************
 *              OSS_InitRingMessage
 *
 * Initialize the ring of messages for passing between driver's caller and playback/record
 * thread
 */
static int OSS_InitRingMessage(OSS_MSG_RING* omr)
{
    omr->msg_toget = 0;
    omr->msg_tosave = 0;
#ifdef USE_PIPE_SYNC
    if (pipe(omr->msg_pipe) < 0) {
        omr->msg_pipe[0] = -1;
        omr->msg_pipe[1] = -1;
        ERR("could not create pipe, error=%s\n", strerror(errno));
    }
#else
    omr->msg_event = CreateEventA(NULL, FALSE, FALSE, NULL);
#endif
    omr->ring_buffer_size = OSS_RING_BUFFER_INCREMENT;
    omr->messages = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,omr->ring_buffer_size * sizeof(OSS_MSG));
    InitializeCriticalSection(&omr->msg_crst);
    return 0;
}

/******************************************************************
 *              OSS_DestroyRingMessage
 *
 */
static int OSS_DestroyRingMessage(OSS_MSG_RING* omr)
{
#ifdef USE_PIPE_SYNC
    close(omr->msg_pipe[0]);
    close(omr->msg_pipe[1]);
#else
    CloseHandle(omr->msg_event);
#endif
    HeapFree(GetProcessHeap(),0,omr->messages);
    DeleteCriticalSection(&omr->msg_crst);
    return 0;
}

/******************************************************************
 *              OSS_AddRingMessage
 *
 * Inserts a new message into the ring (should be called from DriverProc derivated routines)
 */
static int OSS_AddRingMessage(OSS_MSG_RING* omr, enum win_wm_message msg, DWORD param, BOOL wait)
{
    HANDLE      hEvent = INVALID_HANDLE_VALUE;

    EnterCriticalSection(&omr->msg_crst);
    if ((omr->msg_toget == ((omr->msg_tosave + 1) % omr->ring_buffer_size)))
    {
        omr->ring_buffer_size += OSS_RING_BUFFER_INCREMENT;
        TRACE("omr->ring_buffer_size=%d\n",omr->ring_buffer_size);
        omr->messages = HeapReAlloc(GetProcessHeap(),0,omr->messages, omr->ring_buffer_size * sizeof(OSS_MSG));
    }
    if (wait)
    {
        hEvent = CreateEventA(NULL, FALSE, FALSE, NULL);
        if (hEvent == INVALID_HANDLE_VALUE)
        {
            ERR("can't create event !?\n");
            LeaveCriticalSection(&omr->msg_crst);
            return 0;
        }
        if (omr->msg_toget != omr->msg_tosave && omr->messages[omr->msg_toget].msg != WINE_WM_HEADER)
            FIXME("two fast messages in the queue!!!!\n");

        /* fast messages have to be added at the start of the queue */
        omr->msg_toget = (omr->msg_toget + omr->ring_buffer_size - 1) % omr->ring_buffer_size;

        omr->messages[omr->msg_toget].msg = msg;
        omr->messages[omr->msg_toget].param = param;
        omr->messages[omr->msg_toget].hEvent = hEvent;
    }
    else
    {
        omr->messages[omr->msg_tosave].msg = msg;
        omr->messages[omr->msg_tosave].param = param;
        omr->messages[omr->msg_tosave].hEvent = INVALID_HANDLE_VALUE;
        omr->msg_tosave = (omr->msg_tosave + 1) % omr->ring_buffer_size;
    }
    LeaveCriticalSection(&omr->msg_crst);
    /* signal a new message */
    SIGNAL_OMR(omr);
    if (wait)
    {
        /* wait for playback/record thread to have processed the message */
        WaitForSingleObject(hEvent, INFINITE);
        CloseHandle(hEvent);
    }
    return 1;
}

/******************************************************************
 *              OSS_RetrieveRingMessage
 *
 * Get a message from the ring. Should be called by the playback/record thread.
 */
static int OSS_RetrieveRingMessage(OSS_MSG_RING* omr,
                                   enum win_wm_message *msg, DWORD *param, HANDLE *hEvent)
{
    EnterCriticalSection(&omr->msg_crst);

    if (omr->msg_toget == omr->msg_tosave) /* buffer empty ? */
    {
        LeaveCriticalSection(&omr->msg_crst);
        return 0;
    }

    *msg = omr->messages[omr->msg_toget].msg;
    omr->messages[omr->msg_toget].msg = 0;
    *param = omr->messages[omr->msg_toget].param;
    *hEvent = omr->messages[omr->msg_toget].hEvent;
    omr->msg_toget = (omr->msg_toget + 1) % omr->ring_buffer_size;
    CLEAR_OMR(omr);
    LeaveCriticalSection(&omr->msg_crst);
    return 1;
}

/******************************************************************
 *              OSS_PeekRingMessage
 *
 * Peek at a message from the ring but do not remove it.
 * Should be called by the playback/record thread.
 */
static int OSS_PeekRingMessage(OSS_MSG_RING* omr,
                               enum win_wm_message *msg,
                               DWORD *param, HANDLE *hEvent)
{
    EnterCriticalSection(&omr->msg_crst);

    if (omr->msg_toget == omr->msg_tosave) /* buffer empty ? */
    {
        LeaveCriticalSection(&omr->msg_crst);
        return 0;
    }

    *msg = omr->messages[omr->msg_toget].msg;
    *param = omr->messages[omr->msg_toget].param;
    *hEvent = omr->messages[omr->msg_toget].hEvent;
    LeaveCriticalSection(&omr->msg_crst);
    return 1;
}

/*======================================================================*
 *                  Low level WAVE OUT implementation                   *
 *======================================================================*/

/**************************************************************************
 *                      wodNotifyClient                 [internal]
 */
static DWORD wodNotifyClient(WINE_WAVEOUT* wwo, WORD wMsg, DWORD dwParam1, DWORD dwParam2)
{
    TRACE("wMsg = 0x%04x dwParm1 = %04lX dwParam2 = %04lX\n", wMsg, dwParam1, dwParam2);

    switch (wMsg) {
    case WOM_OPEN:
    case WOM_CLOSE:
    case WOM_DONE:
        if (wwo->wFlags != DCB_NULL &&
            !DriverCallback(wwo->waveDesc.dwCallback, wwo->wFlags,
                            (HDRVR)wwo->waveDesc.hWave, wMsg,
                            wwo->waveDesc.dwInstance, dwParam1, dwParam2)) {
            WARN("can't notify client !\n");
            return MMSYSERR_ERROR;
        }
        break;
    default:
        FIXME("Unknown callback message %u\n", wMsg);
        return MMSYSERR_INVALPARAM;
    }
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodUpdatePlayedTotal    [internal]
 *
 */
static BOOL wodUpdatePlayedTotal(WINE_WAVEOUT* wwo, audio_buf_info* info)
{
    audio_buf_info dspspace;
    if (!info) info = &dspspace;

    if (ioctl(wwo->ossdev->fd, SNDCTL_DSP_GETOSPACE, info) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_GETOSPACE) failed (%s)\n", wwo->ossdev->dev_name, strerror(errno));
        return FALSE;
    }
    wwo->dwPlayedTotal = wwo->dwWrittenTotal - (wwo->dwBufferSize - info->bytes);
    return TRUE;
}

/**************************************************************************
 *                              wodPlayer_BeginWaveHdr          [internal]
 *
 * Makes the specified lpWaveHdr the currently playing wave header.
 * If the specified wave header is a begin loop and we're not already in
 * a loop, setup the loop.
 */
static void wodPlayer_BeginWaveHdr(WINE_WAVEOUT* wwo, LPWAVEHDR lpWaveHdr)
{
    wwo->lpPlayPtr = lpWaveHdr;

    if (!lpWaveHdr) return;

    if (lpWaveHdr->dwFlags & WHDR_BEGINLOOP) {
        if (wwo->lpLoopPtr) {
            WARN("Already in a loop. Discarding loop on this header (%p)\n", lpWaveHdr);
        } else {
            TRACE("Starting loop (%ldx) with %p\n", lpWaveHdr->dwLoops, lpWaveHdr);
            wwo->lpLoopPtr = lpWaveHdr;
            /* Windows does not touch WAVEHDR.dwLoops,
             * so we need to make an internal copy */
            wwo->dwLoops = lpWaveHdr->dwLoops;
        }
    }
    wwo->dwPartialOffset = 0;
}

/**************************************************************************
 *                              wodPlayer_PlayPtrNext           [internal]
 *
 * Advance the play pointer to the next waveheader, looping if required.
 */
static LPWAVEHDR wodPlayer_PlayPtrNext(WINE_WAVEOUT* wwo)
{
    LPWAVEHDR lpWaveHdr = wwo->lpPlayPtr;

    wwo->dwPartialOffset = 0;
    if ((lpWaveHdr->dwFlags & WHDR_ENDLOOP) && wwo->lpLoopPtr) {
        /* We're at the end of a loop, loop if required */
        if (--wwo->dwLoops > 0) {
            wwo->lpPlayPtr = wwo->lpLoopPtr;
        } else {
            /* Handle overlapping loops correctly */
            if (wwo->lpLoopPtr != lpWaveHdr && (lpWaveHdr->dwFlags & WHDR_BEGINLOOP)) {
                FIXME("Correctly handled case ? (ending loop buffer also starts a new loop)\n");
                /* shall we consider the END flag for the closing loop or for
                 * the opening one or for both ???
                 * code assumes for closing loop only
                 */
            } else {
                lpWaveHdr = lpWaveHdr->lpNext;
            }
            wwo->lpLoopPtr = NULL;
            wodPlayer_BeginWaveHdr(wwo, lpWaveHdr);
        }
    } else {
        /* We're not in a loop.  Advance to the next wave header */
        wodPlayer_BeginWaveHdr(wwo, lpWaveHdr = lpWaveHdr->lpNext);
    }

    return lpWaveHdr;
}

/**************************************************************************
 *                           wodPlayer_DSPWait                  [internal]
 * Returns the number of milliseconds to wait for the DSP buffer to write
 * one fragment.
 */
static DWORD wodPlayer_DSPWait(const WINE_WAVEOUT *wwo)
{
    /* time for one fragment to be played */
    return wwo->dwFragmentSize * 1000 / wwo->format.wf.nAvgBytesPerSec;
}

/**************************************************************************
 *                           wodPlayer_NotifyWait               [internal]
 * Returns the number of milliseconds to wait before attempting to notify
 * completion of the specified wavehdr.
 * This is based on the number of bytes remaining to be written in the
 * wave.
 */
static DWORD wodPlayer_NotifyWait(const WINE_WAVEOUT* wwo, LPWAVEHDR lpWaveHdr)
{
    DWORD dwMillis;

    if (lpWaveHdr->reserved < wwo->dwPlayedTotal) {
        dwMillis = 1;
    } else {
        dwMillis = (lpWaveHdr->reserved - wwo->dwPlayedTotal) * 1000 / wwo->format.wf.nAvgBytesPerSec;
        if (!dwMillis) dwMillis = 1;
    }

    return dwMillis;
}


/**************************************************************************
 *                           wodPlayer_WriteMaxFrags            [internal]
 * Writes the maximum number of bytes possible to the DSP and returns
 * TRUE iff the current playPtr has been fully played
 */
static BOOL wodPlayer_WriteMaxFrags(WINE_WAVEOUT* wwo, DWORD* bytes)
{
    DWORD       dwLength = wwo->lpPlayPtr->dwBufferLength - wwo->dwPartialOffset;
    DWORD       toWrite = min(dwLength, *bytes);
    int         written;
    BOOL        ret = FALSE;

    TRACE("Writing wavehdr %p.%lu[%lu]/%lu\n",
          wwo->lpPlayPtr, wwo->dwPartialOffset, wwo->lpPlayPtr->dwBufferLength, toWrite);

    if (toWrite > 0)
    {
        written = write(wwo->ossdev->fd, wwo->lpPlayPtr->lpData + wwo->dwPartialOffset, toWrite);
        if (written <= 0) return FALSE;
    }
    else
        written = 0;

    if (written >= dwLength) {
        /* If we wrote all current wavehdr, skip to the next one */
        wodPlayer_PlayPtrNext(wwo);
        ret = TRUE;
    } else {
        /* Remove the amount written */
        wwo->dwPartialOffset += written;
    }
    *bytes -= written;
    wwo->dwWrittenTotal += written;

    return ret;
}


/**************************************************************************
 *                              wodPlayer_NotifyCompletions     [internal]
 *
 * Notifies and remove from queue all wavehdrs which have been played to
 * the speaker (ie. they have cleared the OSS buffer).  If force is true,
 * we notify all wavehdrs and remove them all from the queue even if they
 * are unplayed or part of a loop.
 */
static DWORD wodPlayer_NotifyCompletions(WINE_WAVEOUT* wwo, BOOL force)
{
    LPWAVEHDR           lpWaveHdr;

    /* Start from lpQueuePtr and keep notifying until:
     * - we hit an unwritten wavehdr
     * - we hit the beginning of a running loop
     * - we hit a wavehdr which hasn't finished playing
     */
    while ((lpWaveHdr = wwo->lpQueuePtr) &&
           (force ||
            (lpWaveHdr != wwo->lpPlayPtr &&
             lpWaveHdr != wwo->lpLoopPtr &&
             lpWaveHdr->reserved <= wwo->dwPlayedTotal))) {

        wwo->lpQueuePtr = lpWaveHdr->lpNext;

        lpWaveHdr->dwFlags &= ~WHDR_INQUEUE;
        lpWaveHdr->dwFlags |= WHDR_DONE;

        wodNotifyClient(wwo, WOM_DONE, (DWORD)lpWaveHdr, 0);
    }
    return  (lpWaveHdr && lpWaveHdr != wwo->lpPlayPtr && lpWaveHdr != wwo->lpLoopPtr) ?
        wodPlayer_NotifyWait(wwo, lpWaveHdr) : INFINITE;
}

/**************************************************************************
 *                              wodPlayer_Reset                 [internal]
 *
 * wodPlayer helper. Resets current output stream.
 */
static  void    wodPlayer_Reset(WINE_WAVEOUT* wwo, BOOL reset)
{
    wodUpdatePlayedTotal(wwo, NULL);
    /* updates current notify list */
    wodPlayer_NotifyCompletions(wwo, FALSE);

    /* flush all possible output */
    if (OSS_ResetDevice(wwo->ossdev) != MMSYSERR_NOERROR)
    {
        wwo->hThread = 0;
        wwo->state = WINE_WS_STOPPED;
        ExitThread(-1);
    }

    if (reset) {
        enum win_wm_message     msg;
        DWORD                   param;
        HANDLE                  ev;

        /* remove any buffer */
        wodPlayer_NotifyCompletions(wwo, TRUE);

        wwo->lpPlayPtr = wwo->lpQueuePtr = wwo->lpLoopPtr = NULL;
        wwo->state = WINE_WS_STOPPED;
        wwo->dwPlayedTotal = wwo->dwWrittenTotal = 0;
        /* Clear partial wavehdr */
        wwo->dwPartialOffset = 0;

        /* remove any existing message in the ring */
        EnterCriticalSection(&wwo->msgRing.msg_crst);
        /* return all pending headers in queue */
        while (OSS_RetrieveRingMessage(&wwo->msgRing, &msg, &param, &ev))
        {
            if (msg != WINE_WM_HEADER)
            {
                FIXME("shouldn't have headers left\n");
                SetEvent(ev);
                continue;
            }
            ((LPWAVEHDR)param)->dwFlags &= ~WHDR_INQUEUE;
            ((LPWAVEHDR)param)->dwFlags |= WHDR_DONE;

            wodNotifyClient(wwo, WOM_DONE, param, 0);
        }
        RESET_OMR(&wwo->msgRing);
        LeaveCriticalSection(&wwo->msgRing.msg_crst);
    } else {
        if (wwo->lpLoopPtr) {
            /* complicated case, not handled yet (could imply modifying the loop counter */
            FIXME("Pausing while in loop isn't correctly handled yet, except strange results\n");
            wwo->lpPlayPtr = wwo->lpLoopPtr;
            wwo->dwPartialOffset = 0;
            wwo->dwWrittenTotal = wwo->dwPlayedTotal; /* this is wrong !!! */
        } else {
            LPWAVEHDR   ptr;
            DWORD       sz = wwo->dwPartialOffset;

            /* reset all the data as if we had written only up to lpPlayedTotal bytes */
            /* compute the max size playable from lpQueuePtr */
            for (ptr = wwo->lpQueuePtr; ptr != wwo->lpPlayPtr; ptr = ptr->lpNext) {
                sz += ptr->dwBufferLength;
            }
            /* because the reset lpPlayPtr will be lpQueuePtr */
            if (wwo->dwWrittenTotal > wwo->dwPlayedTotal + sz) ERR("grin\n");
            wwo->dwPartialOffset = sz - (wwo->dwWrittenTotal - wwo->dwPlayedTotal);
            wwo->dwWrittenTotal = wwo->dwPlayedTotal;
            wwo->lpPlayPtr = wwo->lpQueuePtr;
        }
        wwo->state = WINE_WS_PAUSED;
    }
}

/**************************************************************************
 *                    wodPlayer_ProcessMessages                 [internal]
 */
static void wodPlayer_ProcessMessages(WINE_WAVEOUT* wwo)
{
    LPWAVEHDR           lpWaveHdr;
    enum win_wm_message msg;
    DWORD               param;
    HANDLE              ev;

    while (OSS_RetrieveRingMessage(&wwo->msgRing, &msg, &param, &ev)) {
        TRACE("Received %s %lx\n", wodPlayerCmdString[msg - WM_USER - 1], param);
        switch (msg) {
        case WINE_WM_PAUSING:
            wodPlayer_Reset(wwo, FALSE);
            SetEvent(ev);
            break;
        case WINE_WM_RESTARTING:
            if (wwo->state == WINE_WS_PAUSED)
            {
                wwo->state = WINE_WS_PLAYING;
            }
            SetEvent(ev);
            break;
        case WINE_WM_HEADER:
            lpWaveHdr = (LPWAVEHDR)param;

            /* insert buffer at the end of queue */
            {
                LPWAVEHDR*      wh;
                for (wh = &(wwo->lpQueuePtr); *wh; wh = &((*wh)->lpNext));
                *wh = lpWaveHdr;
            }
            if (!wwo->lpPlayPtr)
                wodPlayer_BeginWaveHdr(wwo,lpWaveHdr);
            if (wwo->state == WINE_WS_STOPPED)
                wwo->state = WINE_WS_PLAYING;
            break;
        case WINE_WM_RESETTING:
            wodPlayer_Reset(wwo, TRUE);
            SetEvent(ev);
            break;
        case WINE_WM_UPDATE:
            wodUpdatePlayedTotal(wwo, NULL);
            SetEvent(ev);
            break;
        case WINE_WM_BREAKLOOP:
            if (wwo->state == WINE_WS_PLAYING && wwo->lpLoopPtr != NULL) {
                /* ensure exit at end of current loop */
                wwo->dwLoops = 1;
            }
            SetEvent(ev);
            break;
        case WINE_WM_CLOSING:
            /* sanity check: this should not happen since the device must have been reset before */
            if (wwo->lpQueuePtr || wwo->lpPlayPtr) ERR("out of sync\n");
            wwo->hThread = 0;
            wwo->state = WINE_WS_CLOSED;
            SetEvent(ev);
            ExitThread(0);
            /* shouldn't go here */
        default:
            FIXME("unknown message %d\n", msg);
            break;
        }
    }
}

/**************************************************************************
 *                           wodPlayer_FeedDSP                  [internal]
 * Feed as much sound data as we can into the DSP and return the number of
 * milliseconds before it will be necessary to feed the DSP again.
 */
static DWORD wodPlayer_FeedDSP(WINE_WAVEOUT* wwo)
{
    audio_buf_info dspspace;
    DWORD       availInQ;

    wodUpdatePlayedTotal(wwo, &dspspace);
    availInQ = dspspace.bytes;
    TRACE("fragments=%d/%d, fragsize=%d, bytes=%d\n",
          dspspace.fragments, dspspace.fragstotal, dspspace.fragsize, dspspace.bytes);

    /* input queue empty and output buffer with less than one fragment to play 
     * actually some cards do not play the fragment before the last if this one is partially feed
     * so we need to test for full the availability of 2 fragments
     */
    if (!wwo->lpPlayPtr && wwo->dwBufferSize < availInQ + 2 * wwo->dwFragmentSize && 
        !wwo->bNeedPost) {
        TRACE("Run out of wavehdr:s...\n");
        return INFINITE;
    }

    /* no more room... no need to try to feed */
    if (dspspace.fragments != 0) {
        /* Feed from partial wavehdr */
        if (wwo->lpPlayPtr && wwo->dwPartialOffset != 0) {
            wodPlayer_WriteMaxFrags(wwo, &availInQ);
        }

        /* Feed wavehdrs until we run out of wavehdrs or DSP space */
        if (wwo->dwPartialOffset == 0 && wwo->lpPlayPtr) {
            do {
                TRACE("Setting time to elapse for %p to %lu\n",
                      wwo->lpPlayPtr, wwo->dwWrittenTotal + wwo->lpPlayPtr->dwBufferLength);
                /* note the value that dwPlayedTotal will return when this wave finishes playing */
                wwo->lpPlayPtr->reserved = wwo->dwWrittenTotal + wwo->lpPlayPtr->dwBufferLength;
            } while (wodPlayer_WriteMaxFrags(wwo, &availInQ) && wwo->lpPlayPtr && availInQ > 0);
        }

        if (wwo->bNeedPost) {
            /* OSS doesn't start before it gets either 2 fragments or a SNDCTL_DSP_POST;
             * if it didn't get one, we give it the other */
            if (wwo->dwBufferSize < availInQ + 2 * wwo->dwFragmentSize)
                ioctl(wwo->ossdev->fd, SNDCTL_DSP_POST, 0);
            wwo->bNeedPost = FALSE;
        }
    }

    return wodPlayer_DSPWait(wwo);
}


/**************************************************************************
 *                              wodPlayer                       [internal]
 */
static  DWORD   CALLBACK        wodPlayer(LPVOID pmt)
{
    WORD          uDevID = (DWORD)pmt;
    WINE_WAVEOUT* wwo = (WINE_WAVEOUT*)&WOutDev[uDevID];
    DWORD         dwNextFeedTime = INFINITE;   /* Time before DSP needs feeding */
    DWORD         dwNextNotifyTime = INFINITE; /* Time before next wave completion */
    DWORD         dwSleepTime;

    wwo->state = WINE_WS_STOPPED;
    SetEvent(wwo->hStartUpEvent);

    for (;;) {
        /** Wait for the shortest time before an action is required.  If there
         *  are no pending actions, wait forever for a command.
         */
        dwSleepTime = min(dwNextFeedTime, dwNextNotifyTime);
        TRACE("waiting %lums (%lu,%lu)\n", dwSleepTime, dwNextFeedTime, dwNextNotifyTime);
        WAIT_OMR(&wwo->msgRing, dwSleepTime);
        wodPlayer_ProcessMessages(wwo);
        if (wwo->state == WINE_WS_PLAYING) {
            dwNextFeedTime = wodPlayer_FeedDSP(wwo);
            dwNextNotifyTime = wodPlayer_NotifyCompletions(wwo, FALSE);
            if (dwNextFeedTime == INFINITE) {
                /* FeedDSP ran out of data, but before flushing, */
                /* check that a notification didn't give us more */
                wodPlayer_ProcessMessages(wwo);
                if (!wwo->lpPlayPtr) {
                    TRACE("flushing\n");
                    ioctl(wwo->ossdev->fd, SNDCTL_DSP_SYNC, 0);
                    wwo->dwPlayedTotal = wwo->dwWrittenTotal;
                    dwNextNotifyTime = wodPlayer_NotifyCompletions(wwo, FALSE);
                } else {
                    TRACE("recovering\n");
                    dwNextFeedTime = wodPlayer_FeedDSP(wwo);
                }
            }
        } else {
            dwNextFeedTime = dwNextNotifyTime = INFINITE;
        }
    }
}

/**************************************************************************
 *                      wodGetDevCaps                           [internal]
 */
static DWORD wodGetDevCaps(WORD wDevID, LPWAVEOUTCAPSA lpCaps, DWORD dwSize)
{
    TRACE("(%u, %p, %lu);\n", wDevID, lpCaps, dwSize);

    if (lpCaps == NULL) return MMSYSERR_NOTENABLED;

    if (wDevID >= numOutDev) {
        TRACE("numOutDev reached !\n");
        return MMSYSERR_BADDEVICEID;
    }

    memcpy(lpCaps, &WOutDev[wDevID].ossdev->out_caps, min(dwSize, sizeof(*lpCaps)));
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodOpen                         [internal]
 */
static DWORD wodOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
{
    int                 audio_fragment;
    WINE_WAVEOUT*       wwo;
    audio_buf_info      info;
    DWORD               ret;

    TRACE("(%u, %p[cb=%08lx], %08lX);\n", wDevID, lpDesc, lpDesc->dwCallback, dwFlags);
    if (lpDesc == NULL) {
        WARN("Invalid Parameter !\n");
        return MMSYSERR_INVALPARAM;
    }
    if (wDevID >= numOutDev) {
        TRACE("MAX_WAVOUTDRV reached !\n");
        return MMSYSERR_BADDEVICEID;
    }

    /* only PCM format is supported so far... */
    if (lpDesc->lpFormat->wFormatTag != WAVE_FORMAT_PCM ||
        lpDesc->lpFormat->nChannels == 0 ||
        lpDesc->lpFormat->nSamplesPerSec == 0) {
        WARN("Bad format: tag=%04X nChannels=%d nSamplesPerSec=%ld !\n",
             lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
             lpDesc->lpFormat->nSamplesPerSec);
        return WAVERR_BADFORMAT;
    }

    if (dwFlags & WAVE_FORMAT_QUERY) {
        TRACE("Query format: tag=%04X nChannels=%d nSamplesPerSec=%ld !\n",
             lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
             lpDesc->lpFormat->nSamplesPerSec);
        return MMSYSERR_NOERROR;
    }

    wwo = &WOutDev[wDevID];

    if ((dwFlags & WAVE_DIRECTSOUND) && 
        !(wwo->ossdev->out_caps.dwSupport & WAVECAPS_DIRECTSOUND))
        /* not supported, ignore it */
        dwFlags &= ~WAVE_DIRECTSOUND;

    if (dwFlags & WAVE_DIRECTSOUND) {
        if (wwo->ossdev->out_caps.dwSupport & WAVECAPS_SAMPLEACCURATE)
            /* we have realtime DirectSound, fragments just waste our time,
             * but a large buffer is good, so choose 64KB (32 * 2^11) */
            audio_fragment = 0x0020000B;
        else
            /* to approximate realtime, we must use small fragments,
             * let's try to fragment the above 64KB (256 * 2^8) */
            audio_fragment = 0x01000008;
    } else {
        /* A wave device must have a worst case latency of 10 ms so calculate
         * the largest fragment size less than 10 ms long.
         */
        int     fsize = lpDesc->lpFormat->nAvgBytesPerSec / 100;        /* 10 ms chunk */
        int     shift = 0;
        while ((1 << shift) <= fsize)
            shift++;
        shift--;
        audio_fragment = 0x00100000 + shift;    /* 16 fragments of 2^shift */
    }

    TRACE("using %d %d byte fragments (%ld ms)\n", audio_fragment >> 16,
        1 << (audio_fragment & 0xffff), 
        ((1 << (audio_fragment & 0xffff)) * 1000) / lpDesc->lpFormat->nAvgBytesPerSec);

    if (wwo->state != WINE_WS_CLOSED) return MMSYSERR_ALLOCATED;
    /* we want to be able to mmap() the device, which means it must be opened readable,
     * otherwise mmap() will fail (at least under Linux) */
    ret = OSS_OpenDevice(wwo->ossdev,
                         (dwFlags & WAVE_DIRECTSOUND) ? O_RDWR : O_WRONLY,
                         &audio_fragment,
                         (dwFlags & WAVE_DIRECTSOUND) ? 0 : 1,
                         lpDesc->lpFormat->nSamplesPerSec,
                         (lpDesc->lpFormat->nChannels > 1) ? 1 : 0,
                         (lpDesc->lpFormat->wBitsPerSample == 16)
                             ? AFMT_S16_LE : AFMT_U8);
    if ((ret==MMSYSERR_NOERROR) && (dwFlags & WAVE_DIRECTSOUND)) {
        lpDesc->lpFormat->nSamplesPerSec=wwo->ossdev->sample_rate;
        lpDesc->lpFormat->nChannels=(wwo->ossdev->stereo ? 2 : 1);
        lpDesc->lpFormat->wBitsPerSample=(wwo->ossdev->format == AFMT_U8 ? 8 : 16);
        lpDesc->lpFormat->nBlockAlign=lpDesc->lpFormat->nChannels*lpDesc->lpFormat->wBitsPerSample/8;
        lpDesc->lpFormat->nAvgBytesPerSec=lpDesc->lpFormat->nSamplesPerSec*lpDesc->lpFormat->nBlockAlign;
        TRACE("OSS_OpenDevice returned this format: %ldx%dx%d\n",
              lpDesc->lpFormat->nSamplesPerSec,
              lpDesc->lpFormat->wBitsPerSample,
              lpDesc->lpFormat->nChannels);
    }
    if (ret != 0) return ret;
    wwo->state = WINE_WS_STOPPED;

    wwo->wFlags = HIWORD(dwFlags & CALLBACK_TYPEMASK);

    memcpy(&wwo->waveDesc, lpDesc,           sizeof(WAVEOPENDESC));
    memcpy(&wwo->format,   lpDesc->lpFormat, sizeof(PCMWAVEFORMAT));

    if (wwo->format.wBitsPerSample == 0) {
        WARN("Resetting zeroed wBitsPerSample\n");
        wwo->format.wBitsPerSample = 8 *
            (wwo->format.wf.nAvgBytesPerSec /
             wwo->format.wf.nSamplesPerSec) /
            wwo->format.wf.nChannels;
    }
    /* Read output space info for future reference */
    if (ioctl(wwo->ossdev->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_GETOSPACE) failed (%s)\n", wwo->ossdev->dev_name, strerror(errno));
        OSS_CloseDevice(wwo->ossdev);
        wwo->state = WINE_WS_CLOSED;
        return MMSYSERR_NOTENABLED;
    }

    /* Check that fragsize is correct per our settings above */
    if ((info.fragsize > 1024) && (LOWORD(audio_fragment) <= 10)) {
        /* we've tried to set 1K fragments or less, but it didn't work */
        ERR("fragment size set failed, size is now %d\n", info.fragsize);
        MESSAGE("Your Open Sound System driver did not let us configure small enough sound fragments.\n");
        MESSAGE("This may cause delays and other problems in audio playback with certain applications.\n");
    }

    /* Remember fragsize and total buffer size for future use */
    wwo->dwFragmentSize = info.fragsize;
    wwo->dwBufferSize = info.fragstotal * info.fragsize;
    wwo->dwPlayedTotal = 0;
    wwo->dwWrittenTotal = 0;
    wwo->bNeedPost = TRUE;

    OSS_InitRingMessage(&wwo->msgRing);

    wwo->hStartUpEvent = CreateEventA(NULL, FALSE, FALSE, NULL);
    wwo->hThread = CreateThread(NULL, 0, wodPlayer, (LPVOID)(DWORD)wDevID, 0, &(wwo->dwThreadID));
    WaitForSingleObject(wwo->hStartUpEvent, INFINITE);
    CloseHandle(wwo->hStartUpEvent);
    wwo->hStartUpEvent = INVALID_HANDLE_VALUE;

    TRACE("fd=%d fragmentSize=%ld\n",
          wwo->ossdev->fd, wwo->dwFragmentSize);
    if (wwo->dwFragmentSize % wwo->format.wf.nBlockAlign)
        ERR("Fragment doesn't contain an integral number of data blocks\n");

    TRACE("wBitsPerSample=%u, nAvgBytesPerSec=%lu, nSamplesPerSec=%lu, nChannels=%u nBlockAlign=%u!\n",
          wwo->format.wBitsPerSample, wwo->format.wf.nAvgBytesPerSec,
          wwo->format.wf.nSamplesPerSec, wwo->format.wf.nChannels,
          wwo->format.wf.nBlockAlign);

    return wodNotifyClient(wwo, WOM_OPEN, 0L, 0L);
}

/**************************************************************************
 *                              wodClose                        [internal]
 */
static DWORD wodClose(WORD wDevID)
{
    DWORD               ret = MMSYSERR_NOERROR;
    WINE_WAVEOUT*       wwo;

    TRACE("(%u);\n", wDevID);

    if (wDevID >= numOutDev || WOutDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("bad device ID !\n");
        return MMSYSERR_BADDEVICEID;
    }

    wwo = &WOutDev[wDevID];
    if (wwo->lpQueuePtr) {
        WARN("buffers still playing !\n");
        ret = WAVERR_STILLPLAYING;
    } else {
        if (wwo->hThread != INVALID_HANDLE_VALUE) {
            OSS_AddRingMessage(&wwo->msgRing, WINE_WM_CLOSING, 0, TRUE);
        }
        if (wwo->mapping) {
            munmap(wwo->mapping, wwo->maplen);
            wwo->mapping = NULL;
        }

        OSS_DestroyRingMessage(&wwo->msgRing);

        OSS_CloseDevice(wwo->ossdev);
        wwo->state = WINE_WS_CLOSED;
        wwo->dwFragmentSize = 0;
        ret = wodNotifyClient(wwo, WOM_CLOSE, 0L, 0L);
    }
    return ret;
}

/**************************************************************************
 *                              wodWrite                        [internal]
 *
 */
static DWORD wodWrite(WORD wDevID, LPWAVEHDR lpWaveHdr, DWORD dwSize)
{
    TRACE("(%u, %p, %08lX);\n", wDevID, lpWaveHdr, dwSize);

    /* first, do the sanity checks... */
    if (wDevID >= numOutDev || WOutDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("bad dev ID !\n");
        return MMSYSERR_BADDEVICEID;
    }

    if (lpWaveHdr->lpData == NULL || !(lpWaveHdr->dwFlags & WHDR_PREPARED))
        return WAVERR_UNPREPARED;

    if (lpWaveHdr->dwFlags & WHDR_INQUEUE)
        return WAVERR_STILLPLAYING;

    lpWaveHdr->dwFlags &= ~WHDR_DONE;
    lpWaveHdr->dwFlags |= WHDR_INQUEUE;
    lpWaveHdr->lpNext = 0;

    if ((lpWaveHdr->dwBufferLength & (WOutDev[wDevID].format.wf.nBlockAlign - 1)) != 0)
    {
        WARN("WaveHdr length isn't a multiple of the PCM block size: %ld %% %d\n",lpWaveHdr->dwBufferLength,WOutDev[wDevID].format.wf.nBlockAlign);
        lpWaveHdr->dwBufferLength &= ~(WOutDev[wDevID].format.wf.nBlockAlign - 1);
    }

    OSS_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_HEADER, (DWORD)lpWaveHdr, FALSE);

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodPrepare                      [internal]
 */
static DWORD wodPrepare(WORD wDevID, LPWAVEHDR lpWaveHdr, DWORD dwSize)
{
    TRACE("(%u, %p, %08lX);\n", wDevID, lpWaveHdr, dwSize);

    if (wDevID >= numOutDev) {
        WARN("bad device ID !\n");
        return MMSYSERR_BADDEVICEID;
    }

    if (lpWaveHdr->dwFlags & WHDR_INQUEUE)
        return WAVERR_STILLPLAYING;

    lpWaveHdr->dwFlags |= WHDR_PREPARED;
    lpWaveHdr->dwFlags &= ~WHDR_DONE;
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodUnprepare                    [internal]
 */
static DWORD wodUnprepare(WORD wDevID, LPWAVEHDR lpWaveHdr, DWORD dwSize)
{
    TRACE("(%u, %p, %08lX);\n", wDevID, lpWaveHdr, dwSize);

    if (wDevID >= numOutDev) {
        WARN("bad device ID !\n");
        return MMSYSERR_BADDEVICEID;
    }

    if (lpWaveHdr->dwFlags & WHDR_INQUEUE)
        return WAVERR_STILLPLAYING;

    lpWaveHdr->dwFlags &= ~WHDR_PREPARED;
    lpWaveHdr->dwFlags |= WHDR_DONE;

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                      wodPause                                [internal]
 */
static DWORD wodPause(WORD wDevID)
{
    TRACE("(%u);!\n", wDevID);

    if (wDevID >= numOutDev || WOutDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("bad device ID !\n");
        return MMSYSERR_BADDEVICEID;
    }

    OSS_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_PAUSING, 0, TRUE);

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                      wodRestart                              [internal]
 */
static DWORD wodRestart(WORD wDevID)
{
    TRACE("(%u);\n", wDevID);

    if (wDevID >= numOutDev || WOutDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("bad device ID !\n");
        return MMSYSERR_BADDEVICEID;
    }

    OSS_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_RESTARTING, 0, TRUE);

    /* FIXME: is NotifyClient with WOM_DONE right ? (Comet Busters 1.3.3 needs this notification) */
    /* FIXME: Myst crashes with this ... hmm -MM
       return wodNotifyClient(wwo, WOM_DONE, 0L, 0L);
    */

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                      wodReset                                [internal]
 */
static DWORD wodReset(WORD wDevID)
{
    TRACE("(%u);\n", wDevID);

    if (wDevID >= numOutDev || WOutDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("bad device ID !\n");
        return MMSYSERR_BADDEVICEID;
    }

    OSS_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_RESETTING, 0, TRUE);

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodGetPosition                  [internal]
 */
static DWORD wodGetPosition(WORD wDevID, LPMMTIME lpTime, DWORD uSize)
{
    int                 time;
    DWORD               val;
    WINE_WAVEOUT*       wwo;

    TRACE("(%u, %p, %lu);\n", wDevID, lpTime, uSize);

    if (wDevID >= numOutDev || WOutDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("bad device ID !\n");
        return MMSYSERR_BADDEVICEID;
    }

    if (lpTime == NULL) return MMSYSERR_INVALPARAM;

    wwo = &WOutDev[wDevID];
#ifdef EXACT_WODPOSITION
    OSS_AddRingMessage(&wwo->msgRing, WINE_WM_UPDATE, 0, TRUE);
#endif
    val = wwo->dwPlayedTotal;

    TRACE("wType=%04X wBitsPerSample=%u nSamplesPerSec=%lu nChannels=%u nAvgBytesPerSec=%lu\n",
          lpTime->wType, wwo->format.wBitsPerSample,
          wwo->format.wf.nSamplesPerSec, wwo->format.wf.nChannels,
          wwo->format.wf.nAvgBytesPerSec);
    TRACE("dwPlayedTotal=%lu\n", val);

    switch (lpTime->wType) {
    case TIME_BYTES:
        lpTime->u.cb = val;
        TRACE("TIME_BYTES=%lu\n", lpTime->u.cb);
        break;
    case TIME_SAMPLES:
        lpTime->u.sample = val * 8 / wwo->format.wBitsPerSample /wwo->format.wf.nChannels;
        TRACE("TIME_SAMPLES=%lu\n", lpTime->u.sample);
        break;
    case TIME_SMPTE:
        time = val / (wwo->format.wf.nAvgBytesPerSec / 1000);
        lpTime->u.smpte.hour = time / (60 * 60 * 1000);
        time -= lpTime->u.smpte.hour * (60 * 60 * 1000);
        lpTime->u.smpte.min = time / (60 * 1000);
        time -= lpTime->u.smpte.min * (60 * 1000);
        lpTime->u.smpte.sec = time / 1000;
        time -= lpTime->u.smpte.sec * 1000;
        lpTime->u.smpte.frame = time * 30 / 1000;
        lpTime->u.smpte.fps = 30;
        TRACE("TIME_SMPTE=%02u:%02u:%02u:%02u\n",
              lpTime->u.smpte.hour, lpTime->u.smpte.min,
              lpTime->u.smpte.sec, lpTime->u.smpte.frame);
        break;
    default:
        FIXME("Format %d not supported ! use TIME_MS !\n", lpTime->wType);
        lpTime->wType = TIME_MS;
    case TIME_MS:
        lpTime->u.ms = val / (wwo->format.wf.nAvgBytesPerSec / 1000);
        TRACE("TIME_MS=%lu\n", lpTime->u.ms);
        break;
    }
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodBreakLoop                    [internal]
 */
static DWORD wodBreakLoop(WORD wDevID)
{
    TRACE("(%u);\n", wDevID);

    if (wDevID >= numOutDev || WOutDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("bad device ID !\n");
        return MMSYSERR_BADDEVICEID;
    }
    OSS_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_BREAKLOOP, 0, TRUE);
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodGetVolume                    [internal]
 */
static DWORD wodGetVolume(WORD wDevID, LPDWORD lpdwVol)
{
    int         mixer;
    int         volume;
    DWORD       left, right;
    DWORD       last_left, last_right;

    TRACE("(%u, %p);\n", wDevID, lpdwVol);

    if (lpdwVol == NULL)
        return MMSYSERR_NOTENABLED;
    if (wDevID >= numOutDev) 
        return MMSYSERR_INVALPARAM;

    if ((mixer = open(WOutDev[wDevID].ossdev->mixer_name, O_RDONLY|O_NDELAY)) < 0) {
        WARN("mixer device not available !\n");
        return MMSYSERR_NOTENABLED;
    }
    if (ioctl(mixer, SOUND_MIXER_READ_PCM, &volume) == -1) {
        WARN("ioctl(%s, SOUND_MIXER_READ_PCM) failed (%s)n", WOutDev[wDevID].ossdev->mixer_name, strerror(errno));
        return MMSYSERR_NOTENABLED;
    }
    close(mixer);
    left = LOBYTE(volume);
    right = HIBYTE(volume);
    TRACE("left=%ld right=%ld !\n", left, right);
    last_left  = (LOWORD(WOutDev[wDevID].volume) * 100) / 0xFFFFl;
    last_right = (HIWORD(WOutDev[wDevID].volume) * 100) / 0xFFFFl;
    TRACE("last_left=%ld last_right=%ld !\n", last_left, last_right);
    if (last_left == left && last_right == right)
        *lpdwVol = WOutDev[wDevID].volume;
    else
        *lpdwVol = ((left * 0xFFFFl) / 100) + (((right * 0xFFFFl) / 100) << 16);
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodSetVolume                    [internal]
 */
static DWORD wodSetVolume(WORD wDevID, DWORD dwParam)
{
    int         mixer;
    int         volume;
    DWORD       left, right;

    TRACE("(%u, %08lX);\n", wDevID, dwParam);

    left  = (LOWORD(dwParam) * 100) / 0xFFFFl;
    right = (HIWORD(dwParam) * 100) / 0xFFFFl;
    volume = left + (right << 8);

    if (wDevID >= numOutDev) {
        WARN("invalid parameter: wDevID > %d\n", numOutDev);
        return MMSYSERR_INVALPARAM;
    }

    if ((mixer = open(WOutDev[wDevID].ossdev->mixer_name, O_WRONLY|O_NDELAY)) < 0) {
        WARN("mixer device not available !\n");
        return MMSYSERR_NOTENABLED;
    }
    if (ioctl(mixer, SOUND_MIXER_WRITE_PCM, &volume) == -1) {
        WARN("ioctl(%s, SOUND_MIXER_WRITE_PCM) failed (%s)\n", WOutDev[wDevID].ossdev->mixer_name, strerror(errno));
        return MMSYSERR_NOTENABLED;
    } else {
        TRACE("volume=%04x\n", (unsigned)volume);
    }
    close(mixer);

    /* save requested volume */
    WOutDev[wDevID].volume = dwParam;

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              wodMessage (WINEOSS.7)
 */
DWORD WINAPI OSS_wodMessage(UINT wDevID, UINT wMsg, DWORD dwUser,
                            DWORD dwParam1, DWORD dwParam2)
{
    TRACE("(%u, %04X, %08lX, %08lX, %08lX);\n",
          wDevID, wMsg, dwUser, dwParam1, dwParam2);

    switch (wMsg) {
    case DRVM_INIT:
    case DRVM_EXIT:
    case DRVM_ENABLE:
    case DRVM_DISABLE:
        /* FIXME: Pretend this is supported */
        return 0;
    case WODM_OPEN:             return wodOpen          (wDevID, (LPWAVEOPENDESC)dwParam1,      dwParam2);
    case WODM_CLOSE:            return wodClose         (wDevID);
    case WODM_WRITE:            return wodWrite         (wDevID, (LPWAVEHDR)dwParam1,           dwParam2);
    case WODM_PAUSE:            return wodPause         (wDevID);
    case WODM_GETPOS:           return wodGetPosition   (wDevID, (LPMMTIME)dwParam1,            dwParam2);
    case WODM_BREAKLOOP:        return wodBreakLoop     (wDevID);
    case WODM_PREPARE:          return wodPrepare       (wDevID, (LPWAVEHDR)dwParam1,           dwParam2);
    case WODM_UNPREPARE:        return wodUnprepare     (wDevID, (LPWAVEHDR)dwParam1,           dwParam2);
    case WODM_GETDEVCAPS:       return wodGetDevCaps    (wDevID, (LPWAVEOUTCAPSA)dwParam1,      dwParam2);
    case WODM_GETNUMDEVS:       return numOutDev;
    case WODM_GETPITCH:         return MMSYSERR_NOTSUPPORTED;
    case WODM_SETPITCH:         return MMSYSERR_NOTSUPPORTED;
    case WODM_GETPLAYBACKRATE:  return MMSYSERR_NOTSUPPORTED;
    case WODM_SETPLAYBACKRATE:  return MMSYSERR_NOTSUPPORTED;
    case WODM_GETVOLUME:        return wodGetVolume     (wDevID, (LPDWORD)dwParam1);
    case WODM_SETVOLUME:        return wodSetVolume     (wDevID, dwParam1);
    case WODM_RESTART:          return wodRestart       (wDevID);
    case WODM_RESET:            return wodReset         (wDevID);

    case DRV_QUERYDEVICEINTERFACESIZE: return wdDevInterfaceSize       (wDevID, (LPDWORD)dwParam1);
    case DRV_QUERYDEVICEINTERFACE:     return wdDevInterface           (wDevID, (PWCHAR)dwParam1, dwParam2);
    case DRV_QUERYDSOUNDIFACE:  return wodDsCreate      (wDevID, (PIDSDRIVER*)dwParam1);
    case DRV_QUERYDSOUNDDESC:   return wodDsDesc        (wDevID, (PDSDRIVERDESC)dwParam1);
    case DRV_QUERYDSOUNDGUID:   return wodDsGuid        (wDevID, (LPGUID)dwParam1);
    default:
        FIXME("unknown message %d!\n", wMsg);
    }
    return MMSYSERR_NOTSUPPORTED;
}

/*======================================================================*
 *                  Low level DSOUND implementation                     *
 *======================================================================*/

typedef struct IDsDriverImpl IDsDriverImpl;
typedef struct IDsDriverBufferImpl IDsDriverBufferImpl;

struct IDsDriverImpl
{
    /* IUnknown fields */
    ICOM_VFIELD(IDsDriver);
    DWORD               ref;
    /* IDsDriverImpl fields */
    UINT                wDevID;
    IDsDriverBufferImpl*primary;
};

struct IDsDriverBufferImpl
{
    /* IUnknown fields */
    ICOM_VFIELD(IDsDriverBuffer);
    DWORD               ref;
    /* IDsDriverBufferImpl fields */
    IDsDriverImpl*      drv;
    DWORD               buflen;
    WAVEFORMATEX        wfx;
};

static HRESULT DSDB_MapPrimary(IDsDriverBufferImpl *dsdb)
{
    WINE_WAVEOUT *wwo = &(WOutDev[dsdb->drv->wDevID]);
    TRACE("(%p)\n",dsdb);
    if (!wwo->mapping) {
        wwo->mapping = mmap(NULL, wwo->maplen, PROT_WRITE, MAP_SHARED,
                            wwo->ossdev->fd, 0);
        if (wwo->mapping == (LPBYTE)-1) {
            TRACE("(%p): Could not map sound device for direct access (%s)\n", dsdb, strerror(errno));
            return DSERR_GENERIC;
        }
        TRACE("(%p): sound device has been mapped for direct access at %p, size=%ld\n", dsdb, wwo->mapping, wwo->maplen);

        /* for some reason, es1371 and sblive! sometimes have junk in here.
         * clear it, or we get junk noise */
        /* some libc implementations are buggy: their memset reads from the buffer...
         * to work around it, we have to zero the block by hand. We don't do the expected:
         * memset(wwo->mapping,0, wwo->maplen);
         */
        {
            unsigned char*      p1 = wwo->mapping;
            unsigned            len = wwo->maplen;
            unsigned char       silence = (dsdb->wfx.wBitsPerSample == 8) ? 128 : 0;
            unsigned long       ulsilence = (dsdb->wfx.wBitsPerSample == 8) ? 0x80808080 : 0;

            if (len >= 16) /* so we can have at least a 4 long area to store... */
            {
                /* the mmap:ed value is (at least) dword aligned
                 * so, start filling the complete unsigned long:s
                 */
                int             b = len >> 2;
                unsigned long*  p4 = (unsigned long*)p1;

                while (b--) *p4++ = ulsilence;
                /* prepare for filling the rest */
                len &= 3;
                p1 = (unsigned char*)p4;
            }
            /* in all cases, fill the remaining bytes */
            while (len-- != 0) *p1++ = silence;
        }
    }
    return DS_OK;
}

static HRESULT DSDB_UnmapPrimary(IDsDriverBufferImpl *dsdb)
{
    WINE_WAVEOUT *wwo = &(WOutDev[dsdb->drv->wDevID]);
    TRACE("(%p)\n",dsdb);
    if (wwo->mapping) {
        if (munmap(wwo->mapping, wwo->maplen) < 0) {
            ERR("(%p): Could not unmap sound device (%s)\n", dsdb, strerror(errno));
            return DSERR_GENERIC;
        }
        wwo->mapping = NULL;
        TRACE("(%p): sound device unmapped\n", dsdb);
    }
    return DS_OK;
}

static HRESULT WINAPI IDsDriverBufferImpl_QueryInterface(PIDSDRIVERBUFFER iface, REFIID riid, LPVOID *ppobj)
{
    ICOM_THIS(IDsDriverBufferImpl,iface);
    TRACE("(%p,%s,%p)\n",iface,debugstr_guid(riid),*ppobj);

    if ( IsEqualGUID(riid, &IID_IUnknown) ||
         IsEqualGUID(riid, &IID_IDsDriverBuffer) ) {
        IDsDriverBuffer_AddRef(iface);
        *ppobj = (LPVOID)This;
        return DS_OK;
    }

    if ( IsEqualGUID( &IID_IDsDriverNotify, riid ) ) {
        FIXME("IDsDriverNotify not implemented\n");
        *ppobj = (LPVOID)0;
        return E_NOINTERFACE;
    }

    if ( IsEqualGUID( &IID_IDsDriverPropertySet, riid ) ) {
        FIXME("IDsDriverPropertySet not implemented\n");
        *ppobj = (LPVOID)0;
        return E_NOINTERFACE;
    }

    FIXME( "Unknown IID %s\n", debugstr_guid( riid ) );

    *ppobj = 0;

    return E_NOINTERFACE;
}

static ULONG WINAPI IDsDriverBufferImpl_AddRef(PIDSDRIVERBUFFER iface)
{
    ICOM_THIS(IDsDriverBufferImpl,iface);
    TRACE("(%p)\n",This);
    This->ref++;
    TRACE("ref=%ld\n",This->ref);
    return This->ref;
}

static ULONG WINAPI IDsDriverBufferImpl_Release(PIDSDRIVERBUFFER iface)
{
    ICOM_THIS(IDsDriverBufferImpl,iface);
    TRACE("(%p)\n",This);
    if (--This->ref) {
        TRACE("ref=%ld\n",This->ref);
        return This->ref;
    }
    if (This == This->drv->primary)
        This->drv->primary = NULL;
    DSDB_UnmapPrimary(This);
    HeapFree(GetProcessHeap(),0,This);
    TRACE("ref=0\n");
    return 0;
}

static HRESULT WINAPI IDsDriverBufferImpl_Lock(PIDSDRIVERBUFFER iface,
                                               LPVOID*ppvAudio1,LPDWORD pdwLen1,
                                               LPVOID*ppvAudio2,LPDWORD pdwLen2,
                                               DWORD dwWritePosition,DWORD dwWriteLen,
                                               DWORD dwFlags)
{
    /* ICOM_THIS(IDsDriverBufferImpl,iface); */
    /* since we (GetDriverDesc flags) have specified DSDDESC_DONTNEEDPRIMARYLOCK,
     * and that we don't support secondary buffers, this method will never be called */
    TRACE("(%p): stub\n",iface);
    return DSERR_UNSUPPORTED;
}

static HRESULT WINAPI IDsDriverBufferImpl_Unlock(PIDSDRIVERBUFFER iface,
                                                 LPVOID pvAudio1,DWORD dwLen1,
                                                 LPVOID pvAudio2,DWORD dwLen2)
{
    /* ICOM_THIS(IDsDriverBufferImpl,iface); */
    TRACE("(%p): stub\n",iface);
    return DSERR_UNSUPPORTED;
}

static HRESULT WINAPI IDsDriverBufferImpl_SetFormat(PIDSDRIVERBUFFER iface,
                                                    LPWAVEFORMATEX pwfx)
{
    /* ICOM_THIS(IDsDriverBufferImpl,iface); */

    TRACE("(%p,%p)\n",iface,pwfx);
    /* On our request (GetDriverDesc flags), DirectSound has by now used
     * waveOutClose/waveOutOpen to set the format...
     * unfortunately, this means our mmap() is now gone...
     * so we need to somehow signal to our DirectSound implementation
     * that it should completely recreate this HW buffer...
     * this unexpected error code should do the trick... */
    return DSERR_BUFFERLOST;
}

static HRESULT WINAPI IDsDriverBufferImpl_SetFrequency(PIDSDRIVERBUFFER iface, DWORD dwFreq)
{
    /* ICOM_THIS(IDsDriverBufferImpl,iface); */
    TRACE("(%p,%ld): stub\n",iface,dwFreq);
    return DSERR_UNSUPPORTED;
}

static HRESULT WINAPI IDsDriverBufferImpl_SetVolumePan(PIDSDRIVERBUFFER iface, PDSVOLUMEPAN pVolPan)
{
    DWORD vol;
    ICOM_THIS(IDsDriverBufferImpl,iface);
    TRACE("(%p,%p)\n",This,pVolPan);

    vol = pVolPan->dwTotalLeftAmpFactor | (pVolPan->dwTotalRightAmpFactor << 16);

    if (wodSetVolume(This->drv->wDevID, vol) != MMSYSERR_NOERROR) {
        WARN("wodSetVolume failed\n");
        return DSERR_INVALIDPARAM;
    }

    return DS_OK;
}

static HRESULT WINAPI IDsDriverBufferImpl_SetPosition(PIDSDRIVERBUFFER iface, DWORD dwNewPos)
{
    /* ICOM_THIS(IDsDriverImpl,iface); */
    TRACE("(%p,%ld): stub\n",iface,dwNewPos);
    return DSERR_UNSUPPORTED;
}

static HRESULT WINAPI IDsDriverBufferImpl_GetPosition(PIDSDRIVERBUFFER iface,
                                                      LPDWORD lpdwPlay, LPDWORD lpdwWrite)
{
    ICOM_THIS(IDsDriverBufferImpl,iface);
    count_info info;
    DWORD ptr;

    TRACE("(%p)\n",iface);
    if (WOutDev[This->drv->wDevID].state == WINE_WS_CLOSED) {
        ERR("device not open, but accessing?\n");
        return DSERR_UNINITIALIZED;
    }
    if (ioctl(WOutDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_GETOPTR) failed (%s)\n", WOutDev[This->drv->wDevID].ossdev->dev_name, strerror(errno));
        return DSERR_GENERIC;
    }
    ptr = info.ptr & ~3; /* align the pointer, just in case */
    if (lpdwPlay) *lpdwPlay = ptr;
    if (lpdwWrite) {
        /* add some safety margin (not strictly necessary, but...) */
        if (WOutDev[This->drv->wDevID].ossdev->out_caps.dwSupport & WAVECAPS_SAMPLEACCURATE)
            *lpdwWrite = ptr + 32;
        else
            *lpdwWrite = ptr + WOutDev[This->drv->wDevID].dwFragmentSize;
        while (*lpdwWrite > This->buflen)
            *lpdwWrite -= This->buflen;
    }
    TRACE("playpos=%ld, writepos=%ld\n", lpdwPlay?*lpdwPlay:0, lpdwWrite?*lpdwWrite:0);
    return DS_OK;
}

static HRESULT WINAPI IDsDriverBufferImpl_Play(PIDSDRIVERBUFFER iface, DWORD dwRes1, DWORD dwRes2, DWORD dwFlags)
{
    ICOM_THIS(IDsDriverBufferImpl,iface);
    int enable;
    TRACE("(%p,%lx,%lx,%lx)\n",iface,dwRes1,dwRes2,dwFlags);
    WOutDev[This->drv->wDevID].ossdev->bOutputEnabled = TRUE;
    enable = getEnables(WOutDev[This->drv->wDevID].ossdev);
    if (ioctl(WOutDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
        if (errno == EINVAL) {
            /* Don't give up yet. OSS trigger support is inconsistent. */
            if (WOutDev[This->drv->wDevID].ossdev->open_count == 1) {
                /* try the opposite input enable */
                if (WOutDev[This->drv->wDevID].ossdev->bInputEnabled == FALSE)
                    WOutDev[This->drv->wDevID].ossdev->bInputEnabled = TRUE;
                else
                    WOutDev[This->drv->wDevID].ossdev->bInputEnabled = FALSE;
                /* try it again */
                enable = getEnables(WOutDev[This->drv->wDevID].ossdev);
                if (ioctl(WOutDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) >= 0)
                    return DS_OK;
            }    
        }
        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n",WOutDev[This->drv->wDevID].ossdev->dev_name, strerror(errno));
        WOutDev[This->drv->wDevID].ossdev->bOutputEnabled = FALSE;
        return DSERR_GENERIC;
    }
    return DS_OK;
}

static HRESULT WINAPI IDsDriverBufferImpl_Stop(PIDSDRIVERBUFFER iface)
{
    ICOM_THIS(IDsDriverBufferImpl,iface);
    int enable;
    TRACE("(%p)\n",iface);
    /* no more playing */
    WOutDev[This->drv->wDevID].ossdev->bOutputEnabled = FALSE;
    enable = getEnables(WOutDev[This->drv->wDevID].ossdev);
    if (ioctl(WOutDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n", WOutDev[This->drv->wDevID].ossdev->dev_name, strerror(errno));
        return DSERR_GENERIC;
    }
#if 0
    /* the play position must be reset to the beginning of the buffer */
    if (ioctl(WOutDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_RESET, 0) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_RESET) failed (%s)\n", WOutDev[This->drv->wDevID].ossdev->dev_name, strerror(errno));
        return DSERR_GENERIC;
    }
#endif
    /* Most OSS drivers just can't stop the playback without closing the device...
     * so we need to somehow signal to our DirectSound implementation
     * that it should completely recreate this HW buffer...
     * this unexpected error code should do the trick... */
    /* FIXME: ...unless we are doing full duplex, then its not nice to close the device */
    if (WOutDev[This->drv->wDevID].ossdev->open_count == 1)
        return DSERR_BUFFERLOST;

    return DS_OK;
}

static ICOM_VTABLE(IDsDriverBuffer) dsdbvt =
{
    ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
    IDsDriverBufferImpl_QueryInterface,
    IDsDriverBufferImpl_AddRef,
    IDsDriverBufferImpl_Release,
    IDsDriverBufferImpl_Lock,
    IDsDriverBufferImpl_Unlock,
    IDsDriverBufferImpl_SetFormat,
    IDsDriverBufferImpl_SetFrequency,
    IDsDriverBufferImpl_SetVolumePan,
    IDsDriverBufferImpl_SetPosition,
    IDsDriverBufferImpl_GetPosition,
    IDsDriverBufferImpl_Play,
    IDsDriverBufferImpl_Stop
};

static HRESULT WINAPI IDsDriverImpl_QueryInterface(PIDSDRIVER iface, REFIID riid, LPVOID *ppobj)
{
    ICOM_THIS(IDsDriverImpl,iface);
    TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

    if ( IsEqualGUID(riid, &IID_IUnknown) ||
         IsEqualGUID(riid, &IID_IDsDriver) ) {
        IDsDriver_AddRef(iface);
        *ppobj = (LPVOID)This;
        return DS_OK;
    }

    FIXME( "Unknown IID %s\n", debugstr_guid( riid ) );

    *ppobj = 0;

    return E_NOINTERFACE;
}

static ULONG WINAPI IDsDriverImpl_AddRef(PIDSDRIVER iface)
{
    ICOM_THIS(IDsDriverImpl,iface);
    TRACE("(%p)\n",This);
    This->ref++;
    TRACE("ref=%ld\n",This->ref);
    return This->ref;
}

static ULONG WINAPI IDsDriverImpl_Release(PIDSDRIVER iface)
{
    ICOM_THIS(IDsDriverImpl,iface);
    TRACE("(%p)\n",This);
    if (--This->ref) {
        TRACE("ref=%ld\n",This->ref);
        return This->ref;
    }
    HeapFree(GetProcessHeap(),0,This);
    TRACE("ref=0\n");
    return 0;
}

static HRESULT WINAPI IDsDriverImpl_GetDriverDesc(PIDSDRIVER iface, PDSDRIVERDESC pDesc)
{
    ICOM_THIS(IDsDriverImpl,iface);
    TRACE("(%p,%p)\n",iface,pDesc);

    /* copy version from driver */
    memcpy(pDesc, &(WOutDev[This->wDevID].ossdev->ds_desc), sizeof(DSDRIVERDESC));

    pDesc->dwFlags |= DSDDESC_DOMMSYSTEMOPEN | DSDDESC_DOMMSYSTEMSETFORMAT |
        DSDDESC_USESYSTEMMEMORY | DSDDESC_DONTNEEDPRIMARYLOCK;
    pDesc->dnDevNode            = WOutDev[This->wDevID].waveDesc.dnDevNode;
    pDesc->wVxdId               = 0;
    pDesc->wReserved            = 0;
    pDesc->ulDeviceNum          = This->wDevID;
    pDesc->dwHeapType           = DSDHEAP_NOHEAP;
    pDesc->pvDirectDrawHeap     = NULL;
    pDesc->dwMemStartAddress    = 0;
    pDesc->dwMemEndAddress      = 0;
    pDesc->dwMemAllocExtra      = 0;
    pDesc->pvReserved1          = NULL;
    pDesc->pvReserved2          = NULL;
    return DS_OK;
}

static HRESULT WINAPI IDsDriverImpl_Open(PIDSDRIVER iface)
{
    ICOM_THIS(IDsDriverImpl,iface);
    int enable;
    TRACE("(%p)\n",iface);

    /* make sure the card doesn't start playing before we want it to */
    WOutDev[This->wDevID].ossdev->bOutputEnabled = FALSE;
    enable = getEnables(WOutDev[This->wDevID].ossdev);
    if (ioctl(WOutDev[This->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n",WOutDev[This->wDevID].ossdev->dev_name, strerror(errno));
        return DSERR_GENERIC;
    }
    return DS_OK;
}

static HRESULT WINAPI IDsDriverImpl_Close(PIDSDRIVER iface)
{
    ICOM_THIS(IDsDriverImpl,iface);
    TRACE("(%p)\n",iface);
    if (This->primary) {
        ERR("problem with DirectSound: primary not released\n");
        return DSERR_GENERIC;
    }
    return DS_OK;
}

static HRESULT WINAPI IDsDriverImpl_GetCaps(PIDSDRIVER iface, PDSDRIVERCAPS pCaps)
{
    ICOM_THIS(IDsDriverImpl,iface);
    TRACE("(%p,%p)\n",iface,pCaps);
    memcpy(pCaps, &(WOutDev[This->wDevID].ossdev->ds_caps), sizeof(DSDRIVERCAPS));
    return DS_OK;
}

static HRESULT WINAPI IDsDriverImpl_CreateSoundBuffer(PIDSDRIVER iface,
                                                      LPWAVEFORMATEX pwfx,
                                                      DWORD dwFlags, 
                                                      DWORD dwCardAddress,
                                                      LPDWORD pdwcbBufferSize,
                                                      LPBYTE *ppbBuffer,
                                                      LPVOID *ppvObj)
{
    ICOM_THIS(IDsDriverImpl,iface);
    IDsDriverBufferImpl** ippdsdb = (IDsDriverBufferImpl**)ppvObj;
    HRESULT err;
    audio_buf_info info;
    int enable = 0;
    TRACE("(%p,%p,%lx,%lx)\n",iface,pwfx,dwFlags,dwCardAddress);

    /* we only support primary buffers */
    if (!(dwFlags & DSBCAPS_PRIMARYBUFFER))
        return DSERR_UNSUPPORTED;
    if (This->primary)
        return DSERR_ALLOCATED;
    if (dwFlags & (DSBCAPS_CTRLFREQUENCY | DSBCAPS_CTRLPAN))
        return DSERR_CONTROLUNAVAIL;

    *ippdsdb = (IDsDriverBufferImpl*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(IDsDriverBufferImpl));
    if (*ippdsdb == NULL)
        return DSERR_OUTOFMEMORY;
    (*ippdsdb)->lpVtbl  = &dsdbvt;
    (*ippdsdb)->ref     = 1;
    (*ippdsdb)->drv     = This;
    (*ippdsdb)->wfx     = *pwfx;

    /* check how big the DMA buffer is now */
    if (ioctl(WOutDev[This->wDevID].ossdev->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_GETOSPACE) failed (%s)\n", WOutDev[This->wDevID].ossdev->dev_name, strerror(errno));
        HeapFree(GetProcessHeap(),0,*ippdsdb);
        *ippdsdb = NULL;
        return DSERR_GENERIC;
    }
    WOutDev[This->wDevID].maplen = (*ippdsdb)->buflen = info.fragstotal * info.fragsize;

    /* map the DMA buffer */
    err = DSDB_MapPrimary(*ippdsdb);
    if (err != DS_OK) {
        HeapFree(GetProcessHeap(),0,*ippdsdb);
        *ippdsdb = NULL;
        return err;
    }

    /* primary buffer is ready to go */
    *pdwcbBufferSize    = WOutDev[This->wDevID].maplen;
    *ppbBuffer          = WOutDev[This->wDevID].mapping;

    /* some drivers need some extra nudging after mapping */
    WOutDev[This->wDevID].ossdev->bOutputEnabled = FALSE;
    enable = getEnables(WOutDev[This->wDevID].ossdev);
    if (ioctl(WOutDev[This->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n", WOutDev[This->wDevID].ossdev->dev_name, strerror(errno));
        return DSERR_GENERIC;
    }

    This->primary = *ippdsdb;

    return DS_OK;
}

static HRESULT WINAPI IDsDriverImpl_DuplicateSoundBuffer(PIDSDRIVER iface,
                                                         PIDSDRIVERBUFFER pBuffer,
                                                         LPVOID *ppvObj)
{
    /* ICOM_THIS(IDsDriverImpl,iface); */
    TRACE("(%p,%p): stub\n",iface,pBuffer);
    return DSERR_INVALIDCALL;
}

static ICOM_VTABLE(IDsDriver) dsdvt =
{
    ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
    IDsDriverImpl_QueryInterface,
    IDsDriverImpl_AddRef,
    IDsDriverImpl_Release,
    IDsDriverImpl_GetDriverDesc,
    IDsDriverImpl_Open,
    IDsDriverImpl_Close,
    IDsDriverImpl_GetCaps,
    IDsDriverImpl_CreateSoundBuffer,
    IDsDriverImpl_DuplicateSoundBuffer
};

static DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv)
{
    IDsDriverImpl** idrv = (IDsDriverImpl**)drv;
    TRACE("(%d,%p)\n",wDevID,drv);

    /* the HAL isn't much better than the HEL if we can't do mmap() */
    if (!(WOutDev[wDevID].ossdev->out_caps.dwSupport & WAVECAPS_DIRECTSOUND)) {
        ERR("DirectSound flag not set\n");
        MESSAGE("This sound card's driver does not support direct access\n");
        MESSAGE("The (slower) DirectSound HEL mode will be used instead.\n");
        return MMSYSERR_NOTSUPPORTED;
    }

    *idrv = (IDsDriverImpl*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(IDsDriverImpl));
    if (!*idrv)
        return MMSYSERR_NOMEM;
    (*idrv)->lpVtbl     = &dsdvt;
    (*idrv)->ref        = 1;

    (*idrv)->wDevID     = wDevID;
    (*idrv)->primary    = NULL;
    return MMSYSERR_NOERROR;
}

static DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc)
{
    TRACE("(%d,%p)\n",wDevID,desc);
    memcpy(desc, &(WOutDev[wDevID].ossdev->ds_desc), sizeof(DSDRIVERDESC));
    return MMSYSERR_NOERROR;
}

static DWORD wodDsGuid(UINT wDevID, LPGUID pGuid)
{
    TRACE("(%d,%p)\n",wDevID,pGuid);
    memcpy(pGuid, &(WOutDev[wDevID].ossdev->ds_guid), sizeof(GUID));
    return MMSYSERR_NOERROR;
}

/*======================================================================*
 *                  Low level WAVE IN implementation                    *
 *======================================================================*/

/**************************************************************************
 *                      widNotifyClient                 [internal]
 */
static DWORD widNotifyClient(WINE_WAVEIN* wwi, WORD wMsg, DWORD dwParam1, DWORD dwParam2)
{
    TRACE("wMsg = 0x%04x dwParm1 = %04lX dwParam2 = %04lX\n", wMsg, dwParam1, dwParam2);

    switch (wMsg) {
    case WIM_OPEN:
    case WIM_CLOSE:
    case WIM_DATA:
        if (wwi->wFlags != DCB_NULL &&
            !DriverCallback(wwi->waveDesc.dwCallback, wwi->wFlags,
                            (HDRVR)wwi->waveDesc.hWave, wMsg,
                            wwi->waveDesc.dwInstance, dwParam1, dwParam2)) {
            WARN("can't notify client !\n");
            return MMSYSERR_ERROR;
        }
        break;
    default:
        FIXME("Unknown callback message %u\n", wMsg);
        return MMSYSERR_INVALPARAM;
    }
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                      widGetDevCaps                           [internal]
 */
static DWORD widGetDevCaps(WORD wDevID, LPWAVEINCAPSA lpCaps, DWORD dwSize)
{
    TRACE("(%u, %p, %lu);\n", wDevID, lpCaps, dwSize);

    if (lpCaps == NULL) return MMSYSERR_NOTENABLED;

    if (wDevID >= numInDev) {
        TRACE("numOutDev reached !\n");
        return MMSYSERR_BADDEVICEID;
    }

    memcpy(lpCaps, &WInDev[wDevID].ossdev->in_caps, min(dwSize, sizeof(*lpCaps)));
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              widRecorder                     [internal]
 */
static  DWORD   CALLBACK        widRecorder(LPVOID pmt)
{
    WORD                uDevID = (DWORD)pmt;
    WINE_WAVEIN*        wwi = (WINE_WAVEIN*)&WInDev[uDevID];
    WAVEHDR*            lpWaveHdr;
    DWORD               dwSleepTime;
    DWORD               bytesRead;
    LPVOID              buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, wwi->dwFragmentSize);
    char               *pOffset = buffer;
    audio_buf_info      info;
    int                 xs;
    enum win_wm_message msg;
    DWORD               param;
    HANDLE              ev;
    int                 enable;

    wwi->state = WINE_WS_STOPPED;
    wwi->dwTotalRecorded = 0;
    wwi->lpQueuePtr = NULL;

    SetEvent(wwi->hStartUpEvent);

    /* disable input so capture will begin when triggered */
    wwi->ossdev->bInputEnabled = FALSE;
    enable = getEnables(wwi->ossdev);
    if (ioctl(wwi->ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0)
        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n", wwi->ossdev->dev_name, strerror(errno));

    /* the soundblaster live needs a micro wake to get its recording started
     * (or GETISPACE will have 0 frags all the time)
     */
    read(wwi->ossdev->fd, &xs, 4);

    /* make sleep time to be # of ms to output a fragment */
    dwSleepTime = (wwi->dwFragmentSize * 1000) / wwi->format.wf.nAvgBytesPerSec;
    TRACE("sleeptime=%ld ms\n", dwSleepTime);

    for (;;) {
        /* wait for dwSleepTime or an event in thread's queue */
        /* FIXME: could improve wait time depending on queue state,
         * ie, number of queued fragments
         */

        if (wwi->lpQueuePtr != NULL && wwi->state == WINE_WS_PLAYING)
        {
            lpWaveHdr = wwi->lpQueuePtr;

            ioctl(wwi->ossdev->fd, SNDCTL_DSP_GETISPACE, &info);
            TRACE("info={frag=%d fsize=%d ftotal=%d bytes=%d}\n", info.fragments, info.fragsize, info.fragstotal, info.bytes);

            /* read all the fragments accumulated so far */
            while ((info.fragments > 0) && (wwi->lpQueuePtr))
            {
                info.fragments --;

                if (lpWaveHdr->dwBufferLength - lpWaveHdr->dwBytesRecorded >= wwi->dwFragmentSize)
                {
                    /* directly read fragment in wavehdr */
                    bytesRead = read(wwi->ossdev->fd,
                                     lpWaveHdr->lpData + lpWaveHdr->dwBytesRecorded,
                                     wwi->dwFragmentSize);

                    TRACE("bytesRead=%ld (direct)\n", bytesRead);
                    if (bytesRead != (DWORD) -1)
                    {
                        /* update number of bytes recorded in current buffer and by this device */
                        lpWaveHdr->dwBytesRecorded += bytesRead;
                        wwi->dwTotalRecorded       += bytesRead;

                        /* buffer is full. notify client */
                        if (lpWaveHdr->dwBytesRecorded == lpWaveHdr->dwBufferLength)
                        {
                            /* must copy the value of next waveHdr, because we have no idea of what
                             * will be done with the content of lpWaveHdr in callback
                             */
                            LPWAVEHDR   lpNext = lpWaveHdr->lpNext;

                            lpWaveHdr->dwFlags &= ~WHDR_INQUEUE;
                            lpWaveHdr->dwFlags |=  WHDR_DONE;

                            widNotifyClient(wwi, WIM_DATA, (DWORD)lpWaveHdr, 0);
                            lpWaveHdr = wwi->lpQueuePtr = lpNext;
                        }
                    }
                }
                else
                {
                    /* read the fragment in a local buffer */
                    bytesRead = read(wwi->ossdev->fd, buffer, wwi->dwFragmentSize);
                    pOffset = buffer;

                    TRACE("bytesRead=%ld (local)\n", bytesRead);

                    /* copy data in client buffers */
                    while (bytesRead != (DWORD) -1 && bytesRead > 0)
                    {
                        DWORD dwToCopy = min (bytesRead, lpWaveHdr->dwBufferLength - lpWaveHdr->dwBytesRecorded);

                        memcpy(lpWaveHdr->lpData + lpWaveHdr->dwBytesRecorded,
                               pOffset,
                               dwToCopy);

                        /* update number of bytes recorded in current buffer and by this device */
                        lpWaveHdr->dwBytesRecorded += dwToCopy;
                        wwi->dwTotalRecorded += dwToCopy;
                        bytesRead -= dwToCopy;
                        pOffset   += dwToCopy;

                        /* client buffer is full. notify client */
                        if (lpWaveHdr->dwBytesRecorded == lpWaveHdr->dwBufferLength)
                        {
                            /* must copy the value of next waveHdr, because we have no idea of what
                             * will be done with the content of lpWaveHdr in callback
                             */
                            LPWAVEHDR   lpNext = lpWaveHdr->lpNext;
                            TRACE("lpNext=%p\n", lpNext);

                            lpWaveHdr->dwFlags &= ~WHDR_INQUEUE;
                            lpWaveHdr->dwFlags |=  WHDR_DONE;

                            widNotifyClient(wwi, WIM_DATA, (DWORD)lpWaveHdr, 0);

                            wwi->lpQueuePtr = lpWaveHdr = lpNext;
                            if (!lpNext && bytesRead) {
                                /* before we give up, check for more header messages */
                                while (OSS_PeekRingMessage(&wwi->msgRing, &msg, &param, &ev))
                                {
                                    if (msg == WINE_WM_HEADER) {
                                        LPWAVEHDR hdr;
                                        OSS_RetrieveRingMessage(&wwi->msgRing, &msg, &param, &ev);
                                        hdr = ((LPWAVEHDR)param);
                                        TRACE("msg = %s, hdr = %p, ev = %p\n", wodPlayerCmdString[msg - WM_USER - 1], hdr, ev);
                                        hdr->lpNext = 0;
                                        if (lpWaveHdr == 0) {
                                            /* new head of queue */
                                            wwi->lpQueuePtr = lpWaveHdr = hdr;
                                        } else {
                                            /* insert buffer at the end of queue */
                                            LPWAVEHDR*  wh;
                                            for (wh = &(wwi->lpQueuePtr); *wh; wh = &((*wh)->lpNext));
                                            *wh = hdr;
                                        }
                                    } else
                                        break;
                                }

                                if (lpWaveHdr == 0) {
                                    /* no more buffer to copy data to, but we did read more.
                                     * what hasn't been copied will be dropped
                                     */
                                    WARN("buffer under run! %lu bytes dropped.\n", bytesRead);
                                    wwi->lpQueuePtr = NULL;
                                    break;
                                }
                            }
                        }
                    }
                }
            }
        }

        WAIT_OMR(&wwi->msgRing, dwSleepTime);

        while (OSS_RetrieveRingMessage(&wwi->msgRing, &msg, &param, &ev))
        {
            TRACE("msg=%s param=0x%lx\n", wodPlayerCmdString[msg - WM_USER - 1], param);
            switch (msg) {
            case WINE_WM_PAUSING:
                wwi->state = WINE_WS_PAUSED;
                /*FIXME("Device should stop recording\n");*/
                SetEvent(ev);
                break;
            case WINE_WM_STARTING:
                wwi->state = WINE_WS_PLAYING;

                if (wwi->ossdev->bTriggerSupport)
                {
                    /* start the recording */
                    wwi->ossdev->bInputEnabled = TRUE;
                    enable = getEnables(wwi->ossdev);
                    if (ioctl(wwi->ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
                        wwi->ossdev->bInputEnabled = FALSE;
                        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n", wwi->ossdev->dev_name, strerror(errno));
                    }
                }
                else
                {
                    unsigned char data[4];
                    /* read 4 bytes to start the recording */
                    read(wwi->ossdev->fd, data, 4);
                }

                SetEvent(ev);
                break;
            case WINE_WM_HEADER:
                lpWaveHdr = (LPWAVEHDR)param;
                lpWaveHdr->lpNext = 0;

                /* insert buffer at the end of queue */
                {
                    LPWAVEHDR*  wh;
                    for (wh = &(wwi->lpQueuePtr); *wh; wh = &((*wh)->lpNext));
                    *wh = lpWaveHdr;
                }
                break;
            case WINE_WM_STOPPING:
                wwi->state = WINE_WS_STOPPED;
                wwi->dwTotalRecorded = 0;
                if (wwi->state != WINE_WS_STOPPED)
                {
                    if (wwi->ossdev->bTriggerSupport)
                    {
                        /* stop the recording */
                        wwi->ossdev->bInputEnabled = FALSE;
                        enable = getEnables(wwi->ossdev);
                        if (ioctl(wwi->ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
                            wwi->ossdev->bInputEnabled = FALSE;
                            ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n", wwi->ossdev->dev_name, strerror(errno));
                        }
                    }
                    /* return current buffer to app */
                    lpWaveHdr = wwi->lpQueuePtr;
                    if (lpWaveHdr)
                    {
                        LPWAVEHDR       lpNext = lpWaveHdr->lpNext;
                        TRACE("stop %p %p\n", lpWaveHdr, lpWaveHdr->lpNext);
                        lpWaveHdr->dwFlags &= ~WHDR_INQUEUE;
                        lpWaveHdr->dwFlags |= WHDR_DONE;
                        widNotifyClient(wwi, WIM_DATA, (DWORD)lpWaveHdr, 0);
                        wwi->lpQueuePtr = lpNext;
                    }
                }
                SetEvent(ev);
                break;
            case WINE_WM_RESETTING:
                wwi->state = WINE_WS_STOPPED;
                wwi->dwTotalRecorded = 0;
                /* return all buffers to the app */
                for (lpWaveHdr = wwi->lpQueuePtr; lpWaveHdr; lpWaveHdr = lpWaveHdr->lpNext) {
                    TRACE("reset %p %p\n", lpWaveHdr, lpWaveHdr->lpNext);
                    lpWaveHdr->dwFlags &= ~WHDR_INQUEUE;
                    lpWaveHdr->dwFlags |= WHDR_DONE;

                    widNotifyClient(wwi, WIM_DATA, (DWORD)lpWaveHdr, 0);
                }
                wwi->lpQueuePtr = NULL;
                SetEvent(ev);
                break;
            case WINE_WM_CLOSING:
                wwi->hThread = 0;
                wwi->state = WINE_WS_CLOSED;
                SetEvent(ev);
                HeapFree(GetProcessHeap(), 0, buffer);
                ExitThread(0);
                /* shouldn't go here */
            default:
                FIXME("unknown message %d\n", msg);
                break;
            }
        }
    }
    ExitThread(0);
    /* just for not generating compilation warnings... should never be executed */
    return 0;
}


/**************************************************************************
 *                              widOpen                         [internal]
 */
static DWORD widOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
{
    WINE_WAVEIN*        wwi;
    int                 fragment_size;
    int                 audio_fragment;
    DWORD               ret;

    TRACE("(%u, %p, %08lX);\n", wDevID, lpDesc, dwFlags);
    if (lpDesc == NULL) {
        WARN("Invalid Parameter !\n");
        return MMSYSERR_INVALPARAM;
    }
    if (wDevID >= numInDev) return MMSYSERR_BADDEVICEID;

    /* only PCM format is supported so far... */
    if (lpDesc->lpFormat->wFormatTag != WAVE_FORMAT_PCM ||
        lpDesc->lpFormat->nChannels == 0 ||
        lpDesc->lpFormat->nSamplesPerSec == 0) {
        WARN("Bad format: tag=%04X nChannels=%d nSamplesPerSec=%ld !\n",
             lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
             lpDesc->lpFormat->nSamplesPerSec);
        return WAVERR_BADFORMAT;
    }

    if (dwFlags & WAVE_FORMAT_QUERY) {
        TRACE("Query format: tag=%04X nChannels=%d nSamplesPerSec=%ld !\n",
             lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
             lpDesc->lpFormat->nSamplesPerSec);
        return MMSYSERR_NOERROR;
    }

    wwi = &WInDev[wDevID];

    if (wwi->state != WINE_WS_CLOSED) return MMSYSERR_ALLOCATED;

    if ((dwFlags & WAVE_DIRECTSOUND) && 
        !(wwi->ossdev->in_caps_support & WAVECAPS_DIRECTSOUND))
        /* not supported, ignore it */
        dwFlags &= ~WAVE_DIRECTSOUND;

    if (dwFlags & WAVE_DIRECTSOUND) {
        TRACE("has DirectSoundCapture driver\n");
        if (wwi->ossdev->in_caps_support & WAVECAPS_SAMPLEACCURATE)
            /* we have realtime DirectSound, fragments just waste our time,
             * but a large buffer is good, so choose 64KB (32 * 2^11) */
            audio_fragment = 0x0020000B;
        else
            /* to approximate realtime, we must use small fragments,
             * let's try to fragment the above 64KB (256 * 2^8) */
            audio_fragment = 0x01000008;
    } else {
        TRACE("doesn't have DirectSoundCapture driver\n");
        if (wwi->ossdev->open_count > 0) {
            TRACE("Using output device audio_fragment\n");
            /* FIXME: This may not be optimal for capture but it allows us 
             * to do hardware playback without hardware capture. */
            audio_fragment = wwi->ossdev->audio_fragment;
        } else {
            /* A wave device must have a worst case latency of 10 ms so calculate
             * the largest fragment size less than 10 ms long.
             */
            int fsize = lpDesc->lpFormat->nAvgBytesPerSec / 100;        /* 10 ms chunk */
            int shift = 0;
            while ((1 << shift) <= fsize)
                shift++;
            shift--;
            audio_fragment = 0x00100000 + shift;        /* 16 fragments of 2^shift */
        }
    }

    TRACE("using %d %d byte fragments (%ld ms)\n", audio_fragment >> 16,
        1 << (audio_fragment & 0xffff), 
        ((1 << (audio_fragment & 0xffff)) * 1000) / lpDesc->lpFormat->nAvgBytesPerSec);

    ret = OSS_OpenDevice(wwi->ossdev, O_RDONLY, &audio_fragment,
                         1,
                         lpDesc->lpFormat->nSamplesPerSec,
                         (lpDesc->lpFormat->nChannels > 1) ? 1 : 0,
                         (lpDesc->lpFormat->wBitsPerSample == 16)
                         ? AFMT_S16_LE : AFMT_U8);
    if (ret != 0) return ret;
    wwi->state = WINE_WS_STOPPED;

    if (wwi->lpQueuePtr) {
        WARN("Should have an empty queue (%p)\n", wwi->lpQueuePtr);
        wwi->lpQueuePtr = NULL;
    }
    wwi->dwTotalRecorded = 0;
    wwi->wFlags = HIWORD(dwFlags & CALLBACK_TYPEMASK);

    memcpy(&wwi->waveDesc, lpDesc,           sizeof(WAVEOPENDESC));
    memcpy(&wwi->format,   lpDesc->lpFormat, sizeof(PCMWAVEFORMAT));

    if (wwi->format.wBitsPerSample == 0) {
        WARN("Resetting zeroed wBitsPerSample\n");
        wwi->format.wBitsPerSample = 8 *
            (wwi->format.wf.nAvgBytesPerSec /
             wwi->format.wf.nSamplesPerSec) /
            wwi->format.wf.nChannels;
    }

    ioctl(wwi->ossdev->fd, SNDCTL_DSP_GETBLKSIZE, &fragment_size);
    if (fragment_size == -1) {
        WARN("ioctl(%s, SNDCTL_DSP_GETBLKSIZE) failed (%s)\n",
            wwi->ossdev->dev_name, strerror(errno));
        OSS_CloseDevice(wwi->ossdev);
        wwi->state = WINE_WS_CLOSED;
        return MMSYSERR_NOTENABLED;
    }
    wwi->dwFragmentSize = fragment_size;

    TRACE("wBitsPerSample=%u, nAvgBytesPerSec=%lu, nSamplesPerSec=%lu, nChannels=%u nBlockAlign=%u!\n",
          wwi->format.wBitsPerSample, wwi->format.wf.nAvgBytesPerSec,
          wwi->format.wf.nSamplesPerSec, wwi->format.wf.nChannels,
          wwi->format.wf.nBlockAlign);

    OSS_InitRingMessage(&wwi->msgRing);

    wwi->hStartUpEvent = CreateEventA(NULL, FALSE, FALSE, NULL);
    wwi->hThread = CreateThread(NULL, 0, widRecorder, (LPVOID)(DWORD)wDevID, 0, &(wwi->dwThreadID));
    WaitForSingleObject(wwi->hStartUpEvent, INFINITE);
    CloseHandle(wwi->hStartUpEvent);
    wwi->hStartUpEvent = INVALID_HANDLE_VALUE;

    return widNotifyClient(wwi, WIM_OPEN, 0L, 0L);
}

/**************************************************************************
 *                              widClose                        [internal]
 */
static DWORD widClose(WORD wDevID)
{
    WINE_WAVEIN*        wwi;

    TRACE("(%u);\n", wDevID);
    if (wDevID >= numInDev || WInDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("can't close !\n");
        return MMSYSERR_INVALHANDLE;
    }

    wwi = &WInDev[wDevID];

    if (wwi->lpQueuePtr != NULL) {
        WARN("still buffers open !\n");
        return WAVERR_STILLPLAYING;
    }

    OSS_AddRingMessage(&wwi->msgRing, WINE_WM_CLOSING, 0, TRUE);
    OSS_CloseDevice(wwi->ossdev);
    wwi->state = WINE_WS_CLOSED;
    wwi->dwFragmentSize = 0;
    OSS_DestroyRingMessage(&wwi->msgRing);
    return widNotifyClient(wwi, WIM_CLOSE, 0L, 0L);
}

/**************************************************************************
 *                              widAddBuffer            [internal]
 */
static DWORD widAddBuffer(WORD wDevID, LPWAVEHDR lpWaveHdr, DWORD dwSize)
{
    TRACE("(%u, %p, %08lX);\n", wDevID, lpWaveHdr, dwSize);

    if (wDevID >= numInDev || WInDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("can't do it !\n");
        return MMSYSERR_INVALHANDLE;
    }
    if (!(lpWaveHdr->dwFlags & WHDR_PREPARED)) {
        TRACE("never been prepared !\n");
        return WAVERR_UNPREPARED;
    }
    if (lpWaveHdr->dwFlags & WHDR_INQUEUE) {
        TRACE("header already in use !\n");
        return WAVERR_STILLPLAYING;
    }

    lpWaveHdr->dwFlags |= WHDR_INQUEUE;
    lpWaveHdr->dwFlags &= ~WHDR_DONE;
    lpWaveHdr->dwBytesRecorded = 0;
    lpWaveHdr->lpNext = NULL;

    OSS_AddRingMessage(&WInDev[wDevID].msgRing, WINE_WM_HEADER, (DWORD)lpWaveHdr, FALSE);
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              widPrepare                      [internal]
 */
static DWORD widPrepare(WORD wDevID, LPWAVEHDR lpWaveHdr, DWORD dwSize)
{
    TRACE("(%u, %p, %08lX);\n", wDevID, lpWaveHdr, dwSize);

    if (wDevID >= numInDev) return MMSYSERR_INVALHANDLE;

    if (lpWaveHdr->dwFlags & WHDR_INQUEUE)
        return WAVERR_STILLPLAYING;

    lpWaveHdr->dwFlags |= WHDR_PREPARED;
    lpWaveHdr->dwFlags &= ~WHDR_DONE;
    lpWaveHdr->dwBytesRecorded = 0;
    TRACE("header prepared !\n");
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              widUnprepare                    [internal]
 */
static DWORD widUnprepare(WORD wDevID, LPWAVEHDR lpWaveHdr, DWORD dwSize)
{
    TRACE("(%u, %p, %08lX);\n", wDevID, lpWaveHdr, dwSize);
    if (wDevID >= numInDev) return MMSYSERR_INVALHANDLE;

    if (lpWaveHdr->dwFlags & WHDR_INQUEUE)
        return WAVERR_STILLPLAYING;

    lpWaveHdr->dwFlags &= ~WHDR_PREPARED;
    lpWaveHdr->dwFlags |= WHDR_DONE;

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                      widStart                                [internal]
 */
static DWORD widStart(WORD wDevID)
{
    TRACE("(%u);\n", wDevID);
    if (wDevID >= numInDev || WInDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("can't start recording !\n");
        return MMSYSERR_INVALHANDLE;
    }

    OSS_AddRingMessage(&WInDev[wDevID].msgRing, WINE_WM_STARTING, 0, TRUE);
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                      widStop                                 [internal]
 */
static DWORD widStop(WORD wDevID)
{
    TRACE("(%u);\n", wDevID);
    if (wDevID >= numInDev || WInDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("can't stop !\n");
        return MMSYSERR_INVALHANDLE;
    }

    OSS_AddRingMessage(&WInDev[wDevID].msgRing, WINE_WM_STOPPING, 0, TRUE);

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                      widReset                                [internal]
 */
static DWORD widReset(WORD wDevID)
{
    TRACE("(%u);\n", wDevID);
    if (wDevID >= numInDev || WInDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("can't reset !\n");
        return MMSYSERR_INVALHANDLE;
    }
    OSS_AddRingMessage(&WInDev[wDevID].msgRing, WINE_WM_RESETTING, 0, TRUE);
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              widGetPosition                  [internal]
 */
static DWORD widGetPosition(WORD wDevID, LPMMTIME lpTime, DWORD uSize)
{
    int                 time;
    WINE_WAVEIN*        wwi;

    TRACE("(%u, %p, %lu);\n", wDevID, lpTime, uSize);

    if (wDevID >= numInDev || WInDev[wDevID].state == WINE_WS_CLOSED) {
        WARN("can't get pos !\n");
        return MMSYSERR_INVALHANDLE;
    }
    if (lpTime == NULL) return MMSYSERR_INVALPARAM;

    wwi = &WInDev[wDevID];

    TRACE("wType=%04X !\n", lpTime->wType);
    TRACE("wBitsPerSample=%u\n", wwi->format.wBitsPerSample);
    TRACE("nSamplesPerSec=%lu\n", wwi->format.wf.nSamplesPerSec);
    TRACE("nChannels=%u\n", wwi->format.wf.nChannels);
    TRACE("nAvgBytesPerSec=%lu\n", wwi->format.wf.nAvgBytesPerSec);
    TRACE("dwTotalRecorded=%lu\n",wwi->dwTotalRecorded);
    switch (lpTime->wType) {
    case TIME_BYTES:
        lpTime->u.cb = wwi->dwTotalRecorded;
        TRACE("TIME_BYTES=%lu\n", lpTime->u.cb);
        break;
    case TIME_SAMPLES:
        lpTime->u.sample = wwi->dwTotalRecorded * 8 /
            wwi->format.wBitsPerSample / wwi->format.wf.nChannels;
        TRACE("TIME_SAMPLES=%lu\n", lpTime->u.sample);
        break;
    case TIME_SMPTE:
        time = wwi->dwTotalRecorded /
            (wwi->format.wf.nAvgBytesPerSec / 1000);
        lpTime->u.smpte.hour = time / (60 * 60 * 1000);
        time -= lpTime->u.smpte.hour * (60 * 60 * 1000);
        lpTime->u.smpte.min = time / (60 * 1000);
        time -= lpTime->u.smpte.min * (60 * 1000);
        lpTime->u.smpte.sec = time / 1000;
        time -= lpTime->u.smpte.sec * 1000;
        lpTime->u.smpte.frame = time * 30 / 1000;
        lpTime->u.smpte.fps = 30;
        TRACE("TIME_SMPTE=%02u:%02u:%02u:%02u\n",
              lpTime->u.smpte.hour, lpTime->u.smpte.min,
              lpTime->u.smpte.sec, lpTime->u.smpte.frame);
        break;
    default:
        FIXME("format not supported (%u) ! use TIME_MS !\n", lpTime->wType);
        lpTime->wType = TIME_MS;
    case TIME_MS:
        lpTime->u.ms = wwi->dwTotalRecorded /
            (wwi->format.wf.nAvgBytesPerSec / 1000);
        TRACE("TIME_MS=%lu\n", lpTime->u.ms);
        break;
    }
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *                              widMessage (WINEOSS.6)
 */
DWORD WINAPI OSS_widMessage(WORD wDevID, WORD wMsg, DWORD dwUser,
                            DWORD dwParam1, DWORD dwParam2)
{
    TRACE("(%u, %04X, %08lX, %08lX, %08lX);\n",
          wDevID, wMsg, dwUser, dwParam1, dwParam2);

    switch (wMsg) {
    case DRVM_INIT:
    case DRVM_EXIT:
    case DRVM_ENABLE:
    case DRVM_DISABLE:
        /* FIXME: Pretend this is supported */
        return 0;
    case WIDM_OPEN:             return widOpen       (wDevID, (LPWAVEOPENDESC)dwParam1, dwParam2);
    case WIDM_CLOSE:            return widClose      (wDevID);
    case WIDM_ADDBUFFER:        return widAddBuffer  (wDevID, (LPWAVEHDR)dwParam1, dwParam2);
    case WIDM_PREPARE:          return widPrepare    (wDevID, (LPWAVEHDR)dwParam1, dwParam2);
    case WIDM_UNPREPARE:        return widUnprepare  (wDevID, (LPWAVEHDR)dwParam1, dwParam2);
    case WIDM_GETDEVCAPS:       return widGetDevCaps (wDevID, (LPWAVEINCAPSA)dwParam1, dwParam2);
    case WIDM_GETNUMDEVS:       return numInDev;
    case WIDM_GETPOS:           return widGetPosition(wDevID, (LPMMTIME)dwParam1, dwParam2);
    case WIDM_RESET:            return widReset      (wDevID);
    case WIDM_START:            return widStart      (wDevID);
    case WIDM_STOP:             return widStop       (wDevID);
    case DRV_QUERYDEVICEINTERFACESIZE: return wdDevInterfaceSize       (wDevID, (LPDWORD)dwParam1);
    case DRV_QUERYDEVICEINTERFACE:     return wdDevInterface           (wDevID, (PWCHAR)dwParam1, dwParam2);
    case DRV_QUERYDSOUNDIFACE:  return widDsCreate   (wDevID, (PIDSCDRIVER*)dwParam1);
    case DRV_QUERYDSOUNDDESC:   return widDsDesc     (wDevID, (PDSDRIVERDESC)dwParam1);
    case DRV_QUERYDSOUNDGUID:   return widDsGuid     (wDevID, (LPGUID)dwParam1);
    default:
        FIXME("unknown message %u!\n", wMsg);
    }
    return MMSYSERR_NOTSUPPORTED;
}

/*======================================================================*
 *                  Low level DSOUND property set implementation        *
 *======================================================================*/

typedef struct IDsDriverPropertySetImpl IDsDriverPropertySetImpl;

struct IDsDriverPropertySetImpl
{
    /* IUnknown fields */
    ICOM_VFIELD(IDsDriverPropertySet);
    DWORD                            ref;
};

static HRESULT WINAPI IDsDriverPropertySetImpl_QueryInterface(
    PIDSDRIVERPROPERTYSET iface,
    REFIID riid,
    LPVOID *ppobj) 
{
    ICOM_THIS(IDsDriverPropertySetImpl,iface);
    TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

    if ( IsEqualGUID(riid, &IID_IUnknown) ||
         IsEqualGUID(riid, &IID_IDsDriverPropertySet) ) {
        IDsDriverPropertySet_AddRef(iface);
        *ppobj = (LPVOID)This;
        return DS_OK;
    }

    FIXME( "Unknown IID %s\n", debugstr_guid( riid ) );

    *ppobj = 0;

    return E_NOINTERFACE;
}

static ULONG WINAPI IDsDriverPropertySetImpl_AddRef(PIDSDRIVERPROPERTYSET iface) 
{
    ICOM_THIS(IDsDriverPropertySetImpl,iface);
    DWORD ref;
    TRACE("(%p) ref was %ld\n", This, This->ref);

    ref = InterlockedIncrement(&(This->ref));
    return ref;
}

static ULONG WINAPI IDsDriverPropertySetImpl_Release(PIDSDRIVERPROPERTYSET iface) 
{
    ICOM_THIS(IDsDriverPropertySetImpl,iface);
    DWORD ref;
    TRACE("(%p) ref was %ld\n", This, This->ref);

    ref = InterlockedDecrement(&(This->ref));
    return ref;
}

static HRESULT WINAPI IDsDriverPropertySetImpl_Get(
    PIDSDRIVERPROPERTYSET iface,
    PDSPROPERTY pDsProperty,
    LPVOID pPropertyParams,
    ULONG cbPropertyParams,
    LPVOID pPropertyData,
    ULONG cbPropertyData,
    PULONG pcbReturnedData )
{
    ICOM_THIS(IDsDriverPropertySetImpl,iface);
    FIXME("(%p,%p,%p,%lx,%p,%lx,%p)\n",This,pDsProperty,pPropertyParams,cbPropertyParams,pPropertyData,cbPropertyData,pcbReturnedData);
    return DSERR_UNSUPPORTED;
}

static HRESULT WINAPI IDsDriverPropertySetImpl_Set(
    PIDSDRIVERPROPERTYSET iface,
    PDSPROPERTY pDsProperty,
    LPVOID pPropertyParams,
    ULONG cbPropertyParams,
    LPVOID pPropertyData,
    ULONG cbPropertyData )
{
    ICOM_THIS(IDsDriverPropertySetImpl,iface);
    FIXME("(%p,%p,%p,%lx,%p,%lx)\n",This,pDsProperty,pPropertyParams,cbPropertyParams,pPropertyData,cbPropertyData);
    return DSERR_UNSUPPORTED;
}

static HRESULT WINAPI IDsDriverPropertySetImpl_QuerySupport(
    PIDSDRIVERPROPERTYSET iface,
    REFGUID PropertySetId,
    ULONG PropertyId,
    PULONG pSupport )
{
    ICOM_THIS(IDsDriverPropertySetImpl,iface);
    FIXME("(%p,%s,%lx,%p)\n",This,debugstr_guid(PropertySetId),PropertyId,pSupport);
    return DSERR_UNSUPPORTED;
}

ICOM_VTABLE(IDsDriverPropertySet) dsdpsvt =
{
    ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
    IDsDriverPropertySetImpl_QueryInterface,
    IDsDriverPropertySetImpl_AddRef,
    IDsDriverPropertySetImpl_Release,
    IDsDriverPropertySetImpl_Get,
    IDsDriverPropertySetImpl_Set,
    IDsDriverPropertySetImpl_QuerySupport,
};

/*======================================================================*
 *                  Low level DSOUND notify implementation              *
 *======================================================================*/

typedef struct IDsDriverNotifyImpl IDsDriverNotifyImpl;

struct IDsDriverNotifyImpl
{
    /* IUnknown fields */
    ICOM_VFIELD(IDsDriverNotify);
    DWORD                            ref;
    /* IDsDriverNotifyImpl fields */
    LPDSBPOSITIONNOTIFY              notifies;
    int                              nrofnotifies;
};

static HRESULT WINAPI IDsDriverNotifyImpl_QueryInterface(
    PIDSDRIVERNOTIFY iface,
    REFIID riid,
    LPVOID *ppobj) 
{
    ICOM_THIS(IDsDriverNotifyImpl,iface);
    TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

    if ( IsEqualGUID(riid, &IID_IUnknown) ||
         IsEqualGUID(riid, &IID_IDsDriverNotify) ) {
        IDsDriverNotify_AddRef(iface);
        *ppobj = This;
        return DS_OK;
    }

    FIXME( "Unknown IID %s\n", debugstr_guid( riid ) );

    *ppobj = 0;

    return E_NOINTERFACE;
}

static ULONG WINAPI IDsDriverNotifyImpl_AddRef(PIDSDRIVERNOTIFY iface) 
{
    ICOM_THIS(IDsDriverNotifyImpl,iface);
    DWORD ref;
    TRACE("(%p) ref was %ld\n", This, This->ref);

    ref = InterlockedIncrement(&(This->ref));
    return ref;
}

static ULONG WINAPI IDsDriverNotifyImpl_Release(PIDSDRIVERNOTIFY iface) 
{
    ICOM_THIS(IDsDriverNotifyImpl,iface);
    DWORD ref;
    TRACE("(%p) ref was %ld\n", This, This->ref);

    ref = InterlockedDecrement(&(This->ref));
    /* FIXME: A notification should be a part of a buffer rather than pointed
     * to from a buffer. Hence the -1 ref count */
    if (ref == -1) {
        if (This->notifies != NULL)
            HeapFree(GetProcessHeap(), 0, This->notifies);

        HeapFree(GetProcessHeap(),0,This);
        return 0;
    }

    return ref;
}

static HRESULT WINAPI IDsDriverNotifyImpl_SetNotificationPositions(
    PIDSDRIVERNOTIFY iface,
    DWORD howmuch,
    LPCDSBPOSITIONNOTIFY notify) 
{
    ICOM_THIS(IDsDriverNotifyImpl,iface);
    TRACE("(%p,0x%08lx,%p)\n",This,howmuch,notify);

    if (!notify) {
        WARN("invalid parameter\n");
        return DSERR_INVALIDPARAM;
    }

    if (TRACE_ON(wave)) {
        int i;
        for (i=0;i<howmuch;i++)
            TRACE("notify at %ld to 0x%08lx\n",
                notify[i].dwOffset,(DWORD)notify[i].hEventNotify);
    }

    /* Make an internal copy of the caller-supplied array.
     * Replace the existing copy if one is already present. */
    if (This->notifies) 
        This->notifies = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
        This->notifies, howmuch * sizeof(DSBPOSITIONNOTIFY));
    else 
        This->notifies = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
        howmuch * sizeof(DSBPOSITIONNOTIFY));

    memcpy(This->notifies, notify, howmuch * sizeof(DSBPOSITIONNOTIFY));
    This->nrofnotifies = howmuch;

    return S_OK;
}

ICOM_VTABLE(IDsDriverNotify) dsdnvt =
{
    ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
    IDsDriverNotifyImpl_QueryInterface,
    IDsDriverNotifyImpl_AddRef,
    IDsDriverNotifyImpl_Release,
    IDsDriverNotifyImpl_SetNotificationPositions,
};

/*======================================================================*
 *                  Low level DSOUND capture implementation             *
 *======================================================================*/

typedef struct IDsCaptureDriverImpl IDsCaptureDriverImpl;
typedef struct IDsCaptureDriverBufferImpl IDsCaptureDriverBufferImpl;

struct IDsCaptureDriverImpl
{
    /* IUnknown fields */
    ICOM_VFIELD(IDsCaptureDriver);
    DWORD                       ref;
    /* IDsCaptureDriverImpl fields */
    UINT                        wDevID;
    IDsCaptureDriverBufferImpl* capture_buffer;
};

struct IDsCaptureDriverBufferImpl
{
    /* IUnknown fields */
    ICOM_VFIELD(IDsCaptureDriverBuffer);
    DWORD                       ref;
    /* IDsCaptureDriverBufferImpl fields */
    IDsCaptureDriverImpl*       drv;
    DWORD                       buflen;

    /* IDsDriverNotifyImpl fields */
    IDsDriverNotifyImpl*        notify;
    int                         notify_index;

    /* IDsDriverPropertySetImpl fields */
    IDsDriverPropertySetImpl*   property_set;
};

static HRESULT DSDB_MapCapture(IDsCaptureDriverBufferImpl *dscdb)
{
    WINE_WAVEIN *wwi = &(WInDev[dscdb->drv->wDevID]);
    if (!wwi->mapping) {
        wwi->mapping = mmap(NULL, wwi->maplen, PROT_WRITE, MAP_SHARED,
                            wwi->ossdev->fd, 0);
        if (wwi->mapping == (LPBYTE)-1) {
            TRACE("(%p): Could not map sound device for direct access (%s)\n", dscdb, strerror(errno));
            return DSERR_GENERIC;
        }
        TRACE("(%p): sound device has been mapped for direct access at %p, size=%ld\n", dscdb, wwi->mapping, wwi->maplen);

        /* for some reason, es1371 and sblive! sometimes have junk in here.
         * clear it, or we get junk noise */
        /* some libc implementations are buggy: their memset reads from the buffer...
         * to work around it, we have to zero the block by hand. We don't do the expected:
         * memset(wwo->mapping,0, wwo->maplen);
         */
        {
            char*       p1 = wwi->mapping;
            unsigned    len = wwi->maplen;

            if (len >= 16) /* so we can have at least a 4 long area to store... */
            {
                /* the mmap:ed value is (at least) dword aligned
                 * so, start filling the complete unsigned long:s
                 */
                int             b = len >> 2;
                unsigned long*  p4 = (unsigned long*)p1;

                while (b--) *p4++ = 0;
                /* prepare for filling the rest */
                len &= 3;
                p1 = (unsigned char*)p4;
            }
            /* in all cases, fill the remaining bytes */
            while (len-- != 0) *p1++ = 0;
        }
    }
    return DS_OK;
}

static HRESULT DSDB_UnmapCapture(IDsCaptureDriverBufferImpl *dscdb)
{
    WINE_WAVEIN *wwi = &(WInDev[dscdb->drv->wDevID]);
    if (wwi->mapping) {
        if (munmap(wwi->mapping, wwi->maplen) < 0) {
            ERR("(%p): Could not unmap sound device (%s)\n", dscdb, strerror(errno));
            return DSERR_GENERIC;
        }
        wwi->mapping = NULL;
        TRACE("(%p): sound device unmapped\n", dscdb);
    }
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverBufferImpl_QueryInterface(PIDSCDRIVERBUFFER iface, REFIID riid, LPVOID *ppobj)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

    if ( IsEqualGUID(riid, &IID_IUnknown) ||
         IsEqualGUID(riid, &IID_IDsCaptureDriverBuffer) ) {
        IDsCaptureDriverBuffer_AddRef(iface);
        *ppobj = (LPVOID)This;
        return DS_OK;
    }

    if ( IsEqualGUID( &IID_IDsDriverNotify, riid ) ) {
        if (!This->notify) {
            This->notify = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This->notify));
            if (This->notify) {
                This->notify->ref = 0;  /* release when ref = -1 */
                This->notify->lpVtbl = &dsdnvt;
            }
        }
        if (This->notify) {
            IDsDriverNotify_AddRef((PIDSDRIVERNOTIFY)This->notify);
            *ppobj = (LPVOID)This->notify;
            return DS_OK;
        }
        *ppobj = 0;
        return E_FAIL;
    }

    if ( IsEqualGUID( &IID_IDsDriverPropertySet, riid ) ) {
        if (!This->property_set) {
            This->property_set = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This->property_set));
            if (This->property_set) {
                This->property_set->ref = 0;  /* release when ref = -1 */
                This->property_set->lpVtbl = &dsdpsvt;
            }
        }
        if (This->property_set) {
            IDsDriverPropertySet_AddRef((PIDSDRIVERPROPERTYSET)This->property_set);
            *ppobj = (LPVOID)This->property_set;
            return DS_OK;
        }
        *ppobj = 0;
        return E_FAIL;
    }

    FIXME("(%p,%s,%p) unsupported GUID\n", This, debugstr_guid(riid), ppobj);

    *ppobj = 0;

    return DSERR_UNSUPPORTED;
}

static ULONG WINAPI IDsCaptureDriverBufferImpl_AddRef(PIDSCDRIVERBUFFER iface)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    This->ref++;
    return This->ref;
}

static ULONG WINAPI IDsCaptureDriverBufferImpl_Release(PIDSCDRIVERBUFFER iface)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    if (--This->ref)
        return This->ref;
    DSDB_UnmapCapture(This);
    if (This->notify)
        IDsDriverNotify_Release((PIDSDRIVERNOTIFY)This->notify);
    if (This->property_set)
        IDsDriverPropertySet_Release((PIDSDRIVERPROPERTYSET)This->property_set);
    HeapFree(GetProcessHeap(),0,This);
    return 0;
}

static HRESULT WINAPI IDsCaptureDriverBufferImpl_Lock(PIDSCDRIVERBUFFER iface,
                                                      LPVOID*ppvAudio1,LPDWORD pdwLen1,
                                                      LPVOID*ppvAudio2,LPDWORD pdwLen2,
                                                      DWORD dwWritePosition,DWORD dwWriteLen,
                                                      DWORD dwFlags)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    FIXME("(%p,%p,%p,%p,%p,%ld,%ld,0x%08lx): stub!\n",This,ppvAudio1,pdwLen1,ppvAudio2,pdwLen2,
        dwWritePosition,dwWriteLen,dwFlags);
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverBufferImpl_Unlock(PIDSCDRIVERBUFFER iface,
                                                        LPVOID pvAudio1,DWORD dwLen1,
                                                        LPVOID pvAudio2,DWORD dwLen2)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    FIXME("(%p,%p,%ld,%p,%ld): stub!\n",This,pvAudio1,dwLen1,pvAudio2,dwLen2);
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetPosition(PIDSCDRIVERBUFFER iface,
                                                             LPDWORD lpdwCapture, 
                                                             LPDWORD lpdwRead)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    count_info info;
    DWORD ptr;
    TRACE("(%p,%p,%p)\n",This,lpdwCapture,lpdwRead);

    if (WInDev[This->drv->wDevID].state == WINE_WS_CLOSED) {
        ERR("device not open, but accessing?\n");
        return DSERR_UNINITIALIZED;
    }
    if (ioctl(WInDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_GETIPTR) failed (%s)\n", WInDev[This->drv->wDevID].ossdev->dev_name, strerror(errno));
        return DSERR_GENERIC;
    }
    ptr = info.ptr & ~3; /* align the pointer, just in case */
    if (lpdwCapture) *lpdwCapture = ptr;
    if (lpdwRead) {
        /* add some safety margin (not strictly necessary, but...) */
        if (WInDev[This->drv->wDevID].ossdev->in_caps_support & WAVECAPS_SAMPLEACCURATE)
            *lpdwRead = ptr + 32;
        else
            *lpdwRead = ptr + WInDev[This->drv->wDevID].dwFragmentSize;
        while (*lpdwRead > This->buflen)
            *lpdwRead -= This->buflen;
    }
    TRACE("capturepos=%ld, readpos=%ld\n", lpdwCapture?*lpdwCapture:0, lpdwRead?*lpdwRead:0);
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetStatus(PIDSCDRIVERBUFFER iface, LPDWORD lpdwStatus)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    FIXME("(%p,%p): stub!\n",This,lpdwStatus);
    return DSERR_UNSUPPORTED;
}

static HRESULT WINAPI IDsCaptureDriverBufferImpl_Start(PIDSCDRIVERBUFFER iface, DWORD dwFlags)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    int enable;
    TRACE("(%p,%lx)\n",This,dwFlags);
    WInDev[This->drv->wDevID].ossdev->bInputEnabled = TRUE;
    enable = getEnables(WInDev[This->drv->wDevID].ossdev);
    if (ioctl(WInDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
        if (errno == EINVAL) {
            /* Don't give up yet. OSS trigger support is inconsistent. */
            if (WInDev[This->drv->wDevID].ossdev->open_count == 1) {
                /* try the opposite output enable */
                if (WInDev[This->drv->wDevID].ossdev->bOutputEnabled == FALSE)
                    WInDev[This->drv->wDevID].ossdev->bOutputEnabled = TRUE;
                else
                    WInDev[This->drv->wDevID].ossdev->bOutputEnabled = FALSE;
                /* try it again */
                enable = getEnables(WInDev[This->drv->wDevID].ossdev);
                if (ioctl(WInDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) >= 0)
                    return DS_OK;
            }
        }
        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n", WInDev[This->drv->wDevID].ossdev->dev_name, strerror(errno));
        WInDev[This->drv->wDevID].ossdev->bInputEnabled = FALSE;
        return DSERR_GENERIC;
    }
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverBufferImpl_Stop(PIDSCDRIVERBUFFER iface)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    int enable;
    TRACE("(%p)\n",This);
    /* no more captureing */
    WInDev[This->drv->wDevID].ossdev->bInputEnabled = FALSE;
    enable = getEnables(WInDev[This->drv->wDevID].ossdev);
    if (ioctl(WInDev[This->drv->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n", WInDev[This->drv->wDevID].ossdev->dev_name,  strerror(errno));
        return DSERR_GENERIC;
    }

    /* Most OSS drivers just can't stop capturing without closing the device...
     * so we need to somehow signal to our DirectSound implementation
     * that it should completely recreate this HW buffer...
     * this unexpected error code should do the trick... */
    return DSERR_BUFFERLOST;
}

static HRESULT WINAPI IDsCaptureDriverBufferImpl_SetFormat(PIDSCDRIVERBUFFER iface, LPWAVEFORMATEX pwfx)
{
    ICOM_THIS(IDsCaptureDriverBufferImpl,iface);
    FIXME("(%p): stub!\n",This);
    return DSERR_UNSUPPORTED;
}

static ICOM_VTABLE(IDsCaptureDriverBuffer) dscdbvt =
{
    ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
    IDsCaptureDriverBufferImpl_QueryInterface,
    IDsCaptureDriverBufferImpl_AddRef,
    IDsCaptureDriverBufferImpl_Release,
    IDsCaptureDriverBufferImpl_Lock,
    IDsCaptureDriverBufferImpl_Unlock,
    IDsCaptureDriverBufferImpl_SetFormat,
    IDsCaptureDriverBufferImpl_GetPosition,
    IDsCaptureDriverBufferImpl_GetStatus,
    IDsCaptureDriverBufferImpl_Start,
    IDsCaptureDriverBufferImpl_Stop
};

static HRESULT WINAPI IDsCaptureDriverImpl_QueryInterface(PIDSCDRIVER iface, REFIID riid, LPVOID *ppobj)
{
    ICOM_THIS(IDsCaptureDriverImpl,iface);
    TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

    if ( IsEqualGUID(riid, &IID_IUnknown) ||
         IsEqualGUID(riid, &IID_IDsCaptureDriver) ) {
        IDsCaptureDriver_AddRef(iface);
        *ppobj = (LPVOID)This;
        return DS_OK;
    }

    FIXME( "Unknown IID %s\n", debugstr_guid( riid ) );

    *ppobj = 0;

    return E_NOINTERFACE;
}

static ULONG WINAPI IDsCaptureDriverImpl_AddRef(PIDSCDRIVER iface)
{
    ICOM_THIS(IDsCaptureDriverImpl,iface);
    TRACE("(%p)\n",This);
    This->ref++;
    TRACE("ref=%ld\n",This->ref);
    return This->ref;
}

static ULONG WINAPI IDsCaptureDriverImpl_Release(PIDSCDRIVER iface)
{
    ICOM_THIS(IDsCaptureDriverImpl,iface);
    TRACE("(%p)\n",This);
    if (--This->ref) {
        TRACE("ref=%ld\n",This->ref);
        return This->ref;
    }
    HeapFree(GetProcessHeap(),0,This);
    TRACE("ref=0\n");
    return 0;
}

static HRESULT WINAPI IDsCaptureDriverImpl_GetDriverDesc(PIDSCDRIVER iface, PDSDRIVERDESC pDesc)
{
    ICOM_THIS(IDsCaptureDriverImpl,iface);
    TRACE("(%p,%p)\n",This,pDesc);

    if (!pDesc) {
        TRACE("invalid parameter\n");
        return DSERR_INVALIDPARAM;
    }

    /* copy version from driver */
    memcpy(pDesc, &(WInDev[This->wDevID].ossdev->ds_desc), sizeof(DSDRIVERDESC));

    pDesc->dwFlags |= DSDDESC_DOMMSYSTEMOPEN | DSDDESC_DOMMSYSTEMSETFORMAT |
        DSDDESC_USESYSTEMMEMORY | DSDDESC_DONTNEEDPRIMARYLOCK | 
        DSDDESC_DONTNEEDSECONDARYLOCK;
    pDesc->dnDevNode            = WInDev[This->wDevID].waveDesc.dnDevNode;
    pDesc->wVxdId               = 0;
    pDesc->wReserved            = 0;
    pDesc->ulDeviceNum          = This->wDevID;
    pDesc->dwHeapType           = DSDHEAP_NOHEAP;
    pDesc->pvDirectDrawHeap     = NULL;
    pDesc->dwMemStartAddress    = 0;
    pDesc->dwMemEndAddress      = 0;
    pDesc->dwMemAllocExtra      = 0;
    pDesc->pvReserved1          = NULL;
    pDesc->pvReserved2          = NULL;
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverImpl_Open(PIDSCDRIVER iface)
{
    ICOM_THIS(IDsCaptureDriverImpl,iface);
    TRACE("(%p)\n",This);
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverImpl_Close(PIDSCDRIVER iface)
{
    ICOM_THIS(IDsCaptureDriverImpl,iface);
    TRACE("(%p)\n",This);
    if (This->capture_buffer) {
        ERR("problem with DirectSound: capture buffer not released\n");
        return DSERR_GENERIC;
    }
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverImpl_GetCaps(PIDSCDRIVER iface, PDSCDRIVERCAPS pCaps)
{
    ICOM_THIS(IDsCaptureDriverImpl,iface);
    TRACE("(%p,%p)\n",This,pCaps);
    memcpy(pCaps, &(WInDev[This->wDevID].ossdev->dsc_caps), sizeof(DSCDRIVERCAPS)); 
    return DS_OK;
}

static HRESULT WINAPI IDsCaptureDriverImpl_CreateCaptureBuffer(PIDSCDRIVER iface,
                                                               LPWAVEFORMATEX pwfx,
                                                               DWORD dwFlags, 
                                                               DWORD dwCardAddress,
                                                               LPDWORD pdwcbBufferSize,
                                                               LPBYTE *ppbBuffer,
                                                               LPVOID *ppvObj)
{
    ICOM_THIS(IDsCaptureDriverImpl,iface);
    IDsCaptureDriverBufferImpl** ippdscdb = (IDsCaptureDriverBufferImpl**)ppvObj;
    HRESULT err;
    audio_buf_info info;
    int enable;
    TRACE("(%p,%p,%lx,%lx,%p,%p,%p)\n",This,pwfx,dwFlags,dwCardAddress,pdwcbBufferSize,ppbBuffer,ppvObj);

    if (This->capture_buffer) {
        TRACE("already allocated\n");
        return DSERR_ALLOCATED;
    }

    *ippdscdb = (IDsCaptureDriverBufferImpl*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(IDsCaptureDriverBufferImpl));
    if (*ippdscdb == NULL) {
        TRACE("out of memory\n");
        return DSERR_OUTOFMEMORY;
    }

    (*ippdscdb)->lpVtbl = &dscdbvt;
    (*ippdscdb)->ref          = 1;
    (*ippdscdb)->drv          = This;
    (*ippdscdb)->notify       = 0;
    (*ippdscdb)->notify_index = 0;
    (*ippdscdb)->property_set = 0;

    if (WInDev[This->wDevID].state == WINE_WS_CLOSED) {
        WAVEOPENDESC desc;
        desc.hWave = 0;
        desc.lpFormat = pwfx; 
        desc.dwCallback = 0;
        desc.dwInstance = 0;
        desc.uMappedDeviceID = 0;
        desc.dnDevNode = 0;
        err = widOpen(This->wDevID, &desc, dwFlags | WAVE_DIRECTSOUND);
        if (err != MMSYSERR_NOERROR) {
            TRACE("widOpen failed\n");
            return err;
        }
    }

    /* check how big the DMA buffer is now */
    if (ioctl(WInDev[This->wDevID].ossdev->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_GETISPACE) failed (%s)\n", WInDev[This->wDevID].ossdev->dev_name, strerror(errno));
        HeapFree(GetProcessHeap(),0,*ippdscdb);
        *ippdscdb = NULL;
        return DSERR_GENERIC;
    }
    WInDev[This->wDevID].maplen = (*ippdscdb)->buflen = info.fragstotal * info.fragsize;

    /* map the DMA buffer */
    err = DSDB_MapCapture(*ippdscdb);
    if (err != DS_OK) {
        HeapFree(GetProcessHeap(),0,*ippdscdb);
        *ippdscdb = NULL;
        return err;
    }

    /* capture buffer is ready to go */
    *pdwcbBufferSize    = WInDev[This->wDevID].maplen;
    *ppbBuffer          = WInDev[This->wDevID].mapping;

    /* some drivers need some extra nudging after mapping */
    WInDev[This->wDevID].ossdev->bInputEnabled = FALSE;
    enable = getEnables(WInDev[This->wDevID].ossdev);
    if (ioctl(WInDev[This->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
        ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n", WInDev[This->wDevID].ossdev->dev_name, strerror(errno));
        return DSERR_GENERIC;
    }

    This->capture_buffer = *ippdscdb;

    return DS_OK;
}

static ICOM_VTABLE(IDsCaptureDriver) dscdvt =
{
    ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
    IDsCaptureDriverImpl_QueryInterface,
    IDsCaptureDriverImpl_AddRef,
    IDsCaptureDriverImpl_Release,
    IDsCaptureDriverImpl_GetDriverDesc,
    IDsCaptureDriverImpl_Open,
    IDsCaptureDriverImpl_Close,
    IDsCaptureDriverImpl_GetCaps,
    IDsCaptureDriverImpl_CreateCaptureBuffer
};

static DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv)
{
    IDsCaptureDriverImpl** idrv = (IDsCaptureDriverImpl**)drv;
    TRACE("(%d,%p)\n",wDevID,drv);

    /* the HAL isn't much better than the HEL if we can't do mmap() */
    if (!(WInDev[wDevID].ossdev->in_caps_support & WAVECAPS_DIRECTSOUND)) {
        ERR("DirectSoundCapture flag not set\n");
        MESSAGE("This sound card's driver does not support direct access\n");
        MESSAGE("The (slower) DirectSound HEL mode will be used instead.\n");
        return MMSYSERR_NOTSUPPORTED;
    }

    *idrv = (IDsCaptureDriverImpl*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(IDsCaptureDriverImpl));
    if (!*idrv)
        return MMSYSERR_NOMEM;
    (*idrv)->lpVtbl     = &dscdvt;
    (*idrv)->ref        = 1;

    (*idrv)->wDevID     = wDevID;
    (*idrv)->capture_buffer = NULL;
    return MMSYSERR_NOERROR;
}

static DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc)
{
    memcpy(desc, &(WInDev[wDevID].ossdev->ds_desc), sizeof(DSDRIVERDESC));
    return MMSYSERR_NOERROR;
}

static DWORD widDsGuid(UINT wDevID, LPGUID pGuid)
{
    TRACE("(%d,%p)\n",wDevID,pGuid);

    memcpy(pGuid, &(WInDev[wDevID].ossdev->dsc_guid), sizeof(GUID));

    return MMSYSERR_NOERROR;
}

#else /* !HAVE_OSS */

/**************************************************************************
 *                              wodMessage (WINEOSS.7)
 */
DWORD WINAPI OSS_wodMessage(WORD wDevID, WORD wMsg, DWORD dwUser,
                            DWORD dwParam1, DWORD dwParam2)
{
    FIXME("(%u, %04X, %08lX, %08lX, %08lX):stub\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
    return MMSYSERR_NOTENABLED;
}

/**************************************************************************
 *                              widMessage (WINEOSS.6)
 */
DWORD WINAPI OSS_widMessage(WORD wDevID, WORD wMsg, DWORD dwUser,
                            DWORD dwParam1, DWORD dwParam2)
{
    FIXME("(%u, %04X, %08lX, %08lX, %08lX):stub\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
    return MMSYSERR_NOTENABLED;
}

#endif /* HAVE_OSS */