primary.c

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/*              DirectSound
 *
 * Copyright 1998 Marcus Meissner
 * Copyright 1998 Rob Riggs
 * Copyright 2000-2002 TransGaming Technologies, Inc.
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 *
 * TODO:
 *      When PrimarySetFormat (via ReopenDevice or PrimaryOpen) fails,
 *       it leaves dsound in unusable (not really open) state.
 */

#include "dsound_private.h"

DWORD DSOUND_fraglen(DWORD nSamplesPerSec, DWORD nBlockAlign)
{
    /* Given a timer delay of 10ms, the fragment size is approximately:
     *     fraglen = (nSamplesPerSec * 10 / 1000) * nBlockAlign
     * ==> fraglen = (nSamplesPerSec / 100) * nBlockSize
     *
     * ALSA uses buffers that are powers of 2. Because of this, fraglen
     * is rounded up to the nearest power of 2:
     */

    if (nSamplesPerSec <= 12800)
        return 128 * nBlockAlign;

    if (nSamplesPerSec <= 25600)
        return 256 * nBlockAlign;

    if (nSamplesPerSec <= 51200)
        return 512 * nBlockAlign;

    return 1024 * nBlockAlign;
}

static void DSOUND_RecalcPrimary(DirectSoundDevice *device)
{
    TRACE("(%p)\n", device);

    device->fraglen = DSOUND_fraglen(device->pwfx->nSamplesPerSec, device->pwfx->nBlockAlign);
    device->helfrags = device->buflen / device->fraglen;
    TRACE("fraglen=%d helfrags=%d\n", device->fraglen, device->helfrags);

    if (device->hwbuf && device->drvdesc.dwFlags & DSDDESC_DONTNEEDWRITELEAD)
        device->writelead = 0;
    else
        /* calculate the 10ms write lead */
        device->writelead = (device->pwfx->nSamplesPerSec / 100) * device->pwfx->nBlockAlign;
}

HRESULT DSOUND_ReopenDevice(DirectSoundDevice *device, BOOL forcewave)
{
    HRESULT hres = DS_OK;
    TRACE("(%p, %d)\n", device, forcewave);

    if (device->driver)
    {
        IDsDriver_Close(device->driver);
        if (device->drvdesc.dwFlags & DSDDESC_DOMMSYSTEMOPEN)
            waveOutClose(device->hwo);
        IDsDriver_Release(device->driver);
        device->driver = NULL;
        device->buffer = NULL;
        device->hwo = 0;
    }
    else if (device->drvdesc.dwFlags & DSDDESC_DOMMSYSTEMOPEN)
        waveOutClose(device->hwo);

    /* DRV_QUERYDSOUNDIFACE is a "Wine extension" to get the DSound interface */
    if (ds_hw_accel != DS_HW_ACCEL_EMULATION && !forcewave)
        waveOutMessage((HWAVEOUT)(DWORD_PTR)device->drvdesc.dnDevNode, DRV_QUERYDSOUNDIFACE, (DWORD_PTR)&device->driver, 0);

    /* Get driver description */
    if (device->driver) {
        DWORD wod = device->drvdesc.dnDevNode;
        hres = IDsDriver_GetDriverDesc(device->driver,&(device->drvdesc));
        device->drvdesc.dnDevNode = wod;
        if (FAILED(hres)) {
            WARN("IDsDriver_GetDriverDesc failed: %08x\n", hres);
            IDsDriver_Release(device->driver);
            device->driver = NULL;
        }
        }

        /* if no DirectSound interface available, use WINMM API instead */
    if (!device->driver)
        device->drvdesc.dwFlags = DSDDESC_DOMMSYSTEMOPEN | DSDDESC_DOMMSYSTEMSETFORMAT;

    if (device->drvdesc.dwFlags & DSDDESC_DOMMSYSTEMOPEN)
    {
        DWORD flags = CALLBACK_FUNCTION | WAVE_MAPPED;

        if (device->driver)
            flags |= WAVE_DIRECTSOUND;

        hres = mmErr(waveOutOpen(&(device->hwo), device->drvdesc.dnDevNode, device->pwfx, (DWORD_PTR)DSOUND_callback, (DWORD_PTR)device, flags));
        if (FAILED(hres)) {
            WARN("waveOutOpen failed\n");
            if (device->driver)
            {
                IDsDriver_Release(device->driver);
                device->driver = NULL;
            }
            return hres;
        }
    }

    if (device->driver)
        hres = IDsDriver_Open(device->driver);

    return hres;
}

static HRESULT DSOUND_PrimaryOpen(DirectSoundDevice *device)
{
    DWORD buflen;
    HRESULT err = DS_OK;
    TRACE("(%p)\n", device);

    /* on original windows, the buffer it set to a fixed size, no matter what the settings are.
       on windows this size is always fixed (tested on win-xp) */
    if (!device->buflen)
        device->buflen = ds_hel_buflen;
    buflen = device->buflen;
    buflen -= buflen % device->pwfx->nBlockAlign;
    device->buflen = buflen;

    if (device->driver)
    {
        err = IDsDriver_CreateSoundBuffer(device->driver,device->pwfx,
                          DSBCAPS_PRIMARYBUFFER,0,
                          &(device->buflen),&(device->buffer),
                          (LPVOID*)&(device->hwbuf));

        if (err != DS_OK) {
            WARN("IDsDriver_CreateSoundBuffer failed (%08x), falling back to waveout\n", err);
            err = DSOUND_ReopenDevice(device, TRUE);
            if (FAILED(err))
            {
                WARN("Falling back to waveout failed too! Giving up\n");
                return err;
            }
        }
                if (device->hwbuf)
                    IDsDriverBuffer_SetVolumePan(device->hwbuf, &device->volpan);

                DSOUND_RecalcPrimary(device);
        device->prebuf = ds_snd_queue_max;
        if (device->helfrags < ds_snd_queue_min)
        {
            WARN("Too little sound buffer to be effective (%d/%d) falling back to waveout\n", device->buflen, ds_snd_queue_min * device->fraglen);
            device->buflen = buflen;
            IDsDriverBuffer_Release(device->hwbuf);
            device->hwbuf = NULL;
            err = DSOUND_ReopenDevice(device, TRUE);
            if (FAILED(err))
            {
                WARN("Falling back to waveout failed too! Giving up\n");
                return err;
            }
        }
        else if (device->helfrags < ds_snd_queue_max)
            device->prebuf = device->helfrags;
    }

    device->mix_buffer_len = DSOUND_bufpos_to_mixpos(device, device->buflen);
    device->mix_buffer = HeapAlloc(GetProcessHeap(), 0, device->mix_buffer_len);
    if (!device->mix_buffer)
    {
        if (device->hwbuf)
            IDsDriverBuffer_Release(device->hwbuf);
        device->hwbuf = NULL;
        return DSERR_OUTOFMEMORY;
    }

    if (device->state == STATE_PLAYING) device->state = STATE_STARTING;
    else if (device->state == STATE_STOPPING) device->state = STATE_STOPPED;

    /* are we using waveOut stuff? */
    if (!device->driver) {
        LPBYTE newbuf;
        LPWAVEHDR headers = NULL;
        DWORD overshot;
        unsigned int c;

        /* Start in pause mode, to allow buffers to get filled */
        waveOutPause(device->hwo);

        TRACE("desired buflen=%d, old buffer=%p\n", buflen, device->buffer);

        /* reallocate emulated primary buffer */
        if (device->buffer)
            newbuf = HeapReAlloc(GetProcessHeap(),0,device->buffer, buflen);
        else
            newbuf = HeapAlloc(GetProcessHeap(),0, buflen);

        if (!newbuf) {
            ERR("failed to allocate primary buffer\n");
            return DSERR_OUTOFMEMORY;
            /* but the old buffer might still exist and must be re-prepared */
        }

        DSOUND_RecalcPrimary(device);
        if (device->pwave)
            headers = HeapReAlloc(GetProcessHeap(),0,device->pwave, device->helfrags * sizeof(WAVEHDR));
        else
            headers = HeapAlloc(GetProcessHeap(),0,device->helfrags * sizeof(WAVEHDR));

        if (!headers) {
            ERR("failed to allocate wave headers\n");
            HeapFree(GetProcessHeap(), 0, newbuf);
            DSOUND_RecalcPrimary(device);
            return DSERR_OUTOFMEMORY;
        }

        device->buffer = newbuf;
        device->pwave = headers;

        /* prepare fragment headers */
        for (c=0; c<device->helfrags; c++) {
            device->pwave[c].lpData = (char*)device->buffer + c*device->fraglen;
            device->pwave[c].dwBufferLength = device->fraglen;
            device->pwave[c].dwUser = (DWORD_PTR)device;
            device->pwave[c].dwFlags = 0;
            device->pwave[c].dwLoops = 0;
            err = mmErr(waveOutPrepareHeader(device->hwo,&device->pwave[c],sizeof(WAVEHDR)));
            if (err != DS_OK) {
                while (c--)
                    waveOutUnprepareHeader(device->hwo,&device->pwave[c],sizeof(WAVEHDR));
                break;
            }
        }

        overshot = device->buflen % device->fraglen;
        /* sanity */
        if(overshot)
        {
            overshot -= overshot % device->pwfx->nBlockAlign;
            device->pwave[device->helfrags - 1].dwBufferLength += overshot;
        }

        TRACE("fraglen=%d, overshot=%d\n", device->fraglen, overshot);
    }
    device->mixfunction = mixfunctions[device->pwfx->wBitsPerSample/8 - 1];
    device->normfunction = normfunctions[device->pwfx->wBitsPerSample/8 - 1];
    FillMemory(device->buffer, device->buflen, (device->pwfx->wBitsPerSample == 8) ? 128 : 0);
    FillMemory(device->mix_buffer, device->mix_buffer_len, 0);
    device->pwplay = device->pwqueue = device->playpos = device->mixpos = 0;
    return err;
}


static void DSOUND_PrimaryClose(DirectSoundDevice *device)
{
    TRACE("(%p)\n", device);

    /* are we using waveOut stuff? */
    if (!device->hwbuf) {
        unsigned c;

        /* get out of CS when calling the wave system */
        LeaveCriticalSection(&(device->mixlock));
        /* **** */
        device->pwqueue = (DWORD)-1; /* resetting queues */
        waveOutReset(device->hwo);
        for (c=0; c<device->helfrags; c++)
            waveOutUnprepareHeader(device->hwo, &device->pwave[c], sizeof(WAVEHDR));
        /* **** */
        EnterCriticalSection(&(device->mixlock));

        /* clear the queue */
        device->pwqueue = 0;
    } else {
        ULONG ref = IDsDriverBuffer_Release(device->hwbuf);
        if (!ref)
            device->hwbuf = 0;
        else
            ERR("Still %d references on primary buffer, refcount leak?\n", ref);
    }
}

HRESULT DSOUND_PrimaryCreate(DirectSoundDevice *device)
{
    HRESULT err = DS_OK;
    TRACE("(%p)\n", device);

    device->buflen = ds_hel_buflen;
    err = DSOUND_PrimaryOpen(device);

    if (err != DS_OK) {
        WARN("DSOUND_PrimaryOpen failed\n");
        return err;
    }

    device->state = STATE_STOPPED;
    return DS_OK;
}

HRESULT DSOUND_PrimaryDestroy(DirectSoundDevice *device)
{
    TRACE("(%p)\n", device);

    /* **** */
    EnterCriticalSection(&(device->mixlock));

    DSOUND_PrimaryClose(device);
    if (device->driver) {
        if (device->hwbuf) {
            if (IDsDriverBuffer_Release(device->hwbuf) == 0)
                device->hwbuf = 0;
        }
    } else
                HeapFree(GetProcessHeap(),0,device->pwave);
        HeapFree(GetProcessHeap(),0,device->pwfx);
        device->pwfx=NULL;

    LeaveCriticalSection(&(device->mixlock));
    /* **** */

    return DS_OK;
}

HRESULT DSOUND_PrimaryPlay(DirectSoundDevice *device)
{
    HRESULT err = DS_OK;
    TRACE("(%p)\n", device);

    if (device->hwbuf) {
        err = IDsDriverBuffer_Play(device->hwbuf, 0, 0, DSBPLAY_LOOPING);
        if (err != DS_OK)
            WARN("IDsDriverBuffer_Play failed\n");
    } else {
        err = mmErr(waveOutRestart(device->hwo));
        if (err != DS_OK)
            WARN("waveOutRestart failed\n");
    }

    return err;
}

HRESULT DSOUND_PrimaryStop(DirectSoundDevice *device)
{
    HRESULT err = DS_OK;
    TRACE("(%p)\n", device);

    if (device->hwbuf) {
        err = IDsDriverBuffer_Stop(device->hwbuf);
        if (err == DSERR_BUFFERLOST) {
            DSOUND_PrimaryClose(device);
            err = DSOUND_ReopenDevice(device, FALSE);
            if (FAILED(err))
                ERR("DSOUND_ReopenDevice failed\n");
            else
            {
                err = DSOUND_PrimaryOpen(device);
                if (FAILED(err))
                    WARN("DSOUND_PrimaryOpen failed\n");
            }
        } else if (err != DS_OK) {
            WARN("IDsDriverBuffer_Stop failed\n");
        }
    } else {

        /* don't call the wave system with the lock set */
        LeaveCriticalSection(&(device->mixlock));
        /* **** */

        err = mmErr(waveOutPause(device->hwo));

        /* **** */
        EnterCriticalSection(&(device->mixlock));

        if (err != DS_OK)
            WARN("waveOutPause failed\n");
    }

    return err;
}

HRESULT DSOUND_PrimaryGetPosition(DirectSoundDevice *device, LPDWORD playpos, LPDWORD writepos)
{
    TRACE("(%p,%p,%p)\n", device, playpos, writepos);

    if (device->hwbuf) {
        HRESULT err=IDsDriverBuffer_GetPosition(device->hwbuf,playpos,writepos);
        if (err != S_OK) {
            WARN("IDsDriverBuffer_GetPosition failed\n");
            return err;
        }
    } else {
        TRACE("pwplay=%i, pwqueue=%i\n", device->pwplay, device->pwqueue);

        /* check if playpos was requested */
        if (playpos)
            /* use the cached play position */
            *playpos = device->pwplay * device->fraglen;

        /* check if writepos was requested */
        if (writepos)
            /* the writepos is the first non-queued position */
            *writepos = ((device->pwplay + device->pwqueue) % device->helfrags) * device->fraglen;
    }
    TRACE("playpos = %d, writepos = %d (%p, time=%d)\n", playpos?*playpos:-1, writepos?*writepos:-1, device, GetTickCount());
    return DS_OK;
}

static DWORD DSOUND_GetFormatSize(LPCWAVEFORMATEX wfex)
{
    if (wfex->wFormatTag == WAVE_FORMAT_PCM)
        return sizeof(WAVEFORMATEX);
    else
        return sizeof(WAVEFORMATEX) + wfex->cbSize;
}

LPWAVEFORMATEX DSOUND_CopyFormat(LPCWAVEFORMATEX wfex)
{
    DWORD size = DSOUND_GetFormatSize(wfex);
    LPWAVEFORMATEX pwfx = HeapAlloc(GetProcessHeap(),0,size);
    if (pwfx == NULL) {
        WARN("out of memory\n");
    } else if (wfex->wFormatTag != WAVE_FORMAT_PCM) {
        CopyMemory(pwfx, wfex, size);
    } else {
        CopyMemory(pwfx, wfex, sizeof(PCMWAVEFORMAT));
        pwfx->cbSize=0;
        if (pwfx->nBlockAlign != pwfx->nChannels * pwfx->wBitsPerSample/8) {
            WARN("Fixing bad nBlockAlign (%u)\n", pwfx->nBlockAlign);
            pwfx->nBlockAlign  = pwfx->nChannels * pwfx->wBitsPerSample/8;
        }
        if (pwfx->nAvgBytesPerSec != pwfx->nSamplesPerSec * pwfx->nBlockAlign) {
            WARN("Fixing bad nAvgBytesPerSec (%u)\n", pwfx->nAvgBytesPerSec);
            pwfx->nAvgBytesPerSec  = pwfx->nSamplesPerSec * pwfx->nBlockAlign;
        }
    }
    return pwfx;
}

HRESULT primarybuffer_SetFormat(DirectSoundDevice *device, LPCWAVEFORMATEX wfex)
{
    HRESULT err = DSERR_BUFFERLOST;
    int i;
    DWORD nSamplesPerSec, bpp, chans;
    LPWAVEFORMATEX oldpwfx;
        BOOL forced = device->priolevel == DSSCL_WRITEPRIMARY;

    TRACE("(%p,%p)\n", device, wfex);

    if (device->priolevel == DSSCL_NORMAL) {
        WARN("failed priority check!\n");
        return DSERR_PRIOLEVELNEEDED;
    }

    /* Let's be pedantic! */
    if (wfex == NULL) {
        WARN("invalid parameter: wfex==NULL!\n");
        return DSERR_INVALIDPARAM;
    }
    TRACE("(formattag=0x%04x,chans=%d,samplerate=%d,"
              "bytespersec=%d,blockalign=%d,bitspersamp=%d,cbSize=%d)\n",
          wfex->wFormatTag, wfex->nChannels, wfex->nSamplesPerSec,
          wfex->nAvgBytesPerSec, wfex->nBlockAlign,
          wfex->wBitsPerSample, wfex->cbSize);

    /* **** */
    RtlAcquireResourceExclusive(&(device->buffer_list_lock), TRUE);
    EnterCriticalSection(&(device->mixlock));

    nSamplesPerSec = device->pwfx->nSamplesPerSec;
    bpp = device->pwfx->wBitsPerSample;
    chans = device->pwfx->nChannels;

    oldpwfx = device->pwfx;
    device->pwfx = DSOUND_CopyFormat(wfex);
    if (device->pwfx == NULL) {
        device->pwfx = oldpwfx;
        oldpwfx = NULL;
        err = DSERR_OUTOFMEMORY;
        goto done;
    }

    if (!(device->drvdesc.dwFlags & DSDDESC_DOMMSYSTEMSETFORMAT) && device->hwbuf) {
        err = IDsDriverBuffer_SetFormat(device->hwbuf, device->pwfx);

        /* On bad format, try to re-create, big chance it will work then, only do this if we <HAVE> to */
        if (forced && (device->pwfx->nSamplesPerSec/100 != wfex->nSamplesPerSec/100 || err == DSERR_BADFORMAT))
        {
            DWORD cp_size = wfex->wFormatTag == WAVE_FORMAT_PCM ?
                sizeof(PCMWAVEFORMAT) : sizeof(WAVEFORMATEX) + wfex->cbSize;
            err = DSERR_BUFFERLOST;
            CopyMemory(device->pwfx, wfex, cp_size);
        }

        if (err != DSERR_BUFFERLOST && FAILED(err)) {
            DWORD size = DSOUND_GetFormatSize(oldpwfx);
            WARN("IDsDriverBuffer_SetFormat failed\n");
            if (!forced) {
                CopyMemory(device->pwfx, oldpwfx, size);
                err = DS_OK;
            }
            goto done;
        }

        if (err == S_FALSE)
        {
            /* ALSA specific: S_FALSE tells that recreation was successful,
             * but size and location may be changed, and buffer has to be restarted
             * I put it here, so if frequency doesn't match the error will be changed to DSERR_BUFFERLOST
             * and the entire re-initialization will occur anyway
             */
            IDsDriverBuffer_Lock(device->hwbuf, (LPVOID *)&device->buffer, &device->buflen, NULL, NULL, 0, 0, DSBLOCK_ENTIREBUFFER);
            IDsDriverBuffer_Unlock(device->hwbuf, device->buffer, 0, NULL, 0);

            if (device->state == STATE_PLAYING) device->state = STATE_STARTING;
            else if (device->state == STATE_STOPPING) device->state = STATE_STOPPED;
            device->pwplay = device->pwqueue = device->playpos = device->mixpos = 0;
            err = DS_OK;
        }
        DSOUND_RecalcPrimary(device);
    }

    if (err == DSERR_BUFFERLOST)
    {
        DSOUND_PrimaryClose(device);

        err = DSOUND_ReopenDevice(device, FALSE);
        if (FAILED(err))
        {
            WARN("DSOUND_ReopenDevice failed: %08x\n", err);
            goto done;
        }
        err = DSOUND_PrimaryOpen(device);
        if (err != DS_OK) {
            WARN("DSOUND_PrimaryOpen failed\n");
            goto done;
        }

        if (wfex->nSamplesPerSec/100 != device->pwfx->nSamplesPerSec/100 && forced && device->buffer)
        {
            DSOUND_PrimaryClose(device);
            device->pwfx->nSamplesPerSec = wfex->nSamplesPerSec;
            err = DSOUND_ReopenDevice(device, TRUE);
            if (FAILED(err))
                WARN("DSOUND_ReopenDevice(2) failed: %08x\n", err);
            else if (FAILED((err = DSOUND_PrimaryOpen(device))))
                WARN("DSOUND_PrimaryOpen(2) failed: %08x\n", err);
        }
    }

    device->mix_buffer_len = DSOUND_bufpos_to_mixpos(device, device->buflen);
    device->mix_buffer = HeapReAlloc(GetProcessHeap(), 0, device->mix_buffer, device->mix_buffer_len);
    FillMemory(device->mix_buffer, device->mix_buffer_len, 0);
    device->mixfunction = mixfunctions[device->pwfx->wBitsPerSample/8 - 1];
    device->normfunction = normfunctions[device->pwfx->wBitsPerSample/8 - 1];

    if (nSamplesPerSec != device->pwfx->nSamplesPerSec || bpp != device->pwfx->wBitsPerSample || chans != device->pwfx->nChannels) {
        IDirectSoundBufferImpl** dsb = device->buffers;
        for (i = 0; i < device->nrofbuffers; i++, dsb++) {
            /* **** */
            RtlAcquireResourceExclusive(&(*dsb)->lock, TRUE);

            (*dsb)->freqAdjust = ((DWORD64)(*dsb)->freq << DSOUND_FREQSHIFT) / device->pwfx->nSamplesPerSec;
            DSOUND_RecalcFormat((*dsb));
            DSOUND_MixToTemporary((*dsb), 0, (*dsb)->buflen, FALSE);
            (*dsb)->primary_mixpos = 0;

            RtlReleaseResource(&(*dsb)->lock);
            /* **** */
        }
    }

done:
    LeaveCriticalSection(&(device->mixlock));
    RtlReleaseResource(&(device->buffer_list_lock));
    /* **** */

    HeapFree(GetProcessHeap(), 0, oldpwfx);
    return err;
}

/*******************************************************************************
 *      PrimaryBuffer
 */
static inline IDirectSoundBufferImpl *impl_from_IDirectSoundBuffer(IDirectSoundBuffer *iface)
{
    /* IDirectSoundBuffer and IDirectSoundBuffer8 use the same iface. */
    return CONTAINING_RECORD(iface, IDirectSoundBufferImpl, IDirectSoundBuffer8_iface);
}

/* This sets this format for the <em>Primary Buffer Only</em> */
/* See file:///cdrom/sdk52/docs/worddoc/dsound.doc page 120 */
static HRESULT WINAPI PrimaryBufferImpl_SetFormat(
    LPDIRECTSOUNDBUFFER iface,
    LPCWAVEFORMATEX wfex)
{
    IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
    TRACE("(%p,%p)\n", iface, wfex);
    return primarybuffer_SetFormat(This->device, wfex);
}

static HRESULT WINAPI PrimaryBufferImpl_SetVolume(
    LPDIRECTSOUNDBUFFER iface,LONG vol
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    DWORD ampfactors;
        HRESULT hres = DS_OK;
    TRACE("(%p,%d)\n", iface, vol);

    if (!(This->dsbd.dwFlags & DSBCAPS_CTRLVOLUME)) {
        WARN("control unavailable\n");
        return DSERR_CONTROLUNAVAIL;
    }

    if ((vol > DSBVOLUME_MAX) || (vol < DSBVOLUME_MIN)) {
        WARN("invalid parameter: vol = %d\n", vol);
        return DSERR_INVALIDPARAM;
    }

    /* **** */
    EnterCriticalSection(&(device->mixlock));

        waveOutGetVolume(device->hwo, &ampfactors);
        device->volpan.dwTotalLeftAmpFactor=ampfactors & 0xffff;
        device->volpan.dwTotalRightAmpFactor=ampfactors >> 16;
        DSOUND_AmpFactorToVolPan(&device->volpan);
        if (vol != device->volpan.lVolume) {
            device->volpan.lVolume=vol;
            DSOUND_RecalcVolPan(&device->volpan);
            if (device->hwbuf) {
                hres = IDsDriverBuffer_SetVolumePan(device->hwbuf, &device->volpan);
                if (hres != DS_OK)
                    WARN("IDsDriverBuffer_SetVolumePan failed\n");
            } else {
                ampfactors = (device->volpan.dwTotalLeftAmpFactor & 0xffff) | (device->volpan.dwTotalRightAmpFactor << 16);
                waveOutSetVolume(device->hwo, ampfactors);
            }
        }

    LeaveCriticalSection(&(device->mixlock));
    /* **** */

    return hres;
}

static HRESULT WINAPI PrimaryBufferImpl_GetVolume(
    LPDIRECTSOUNDBUFFER iface,LPLONG vol
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    DWORD ampfactors;
    TRACE("(%p,%p)\n", iface, vol);

    if (!(This->dsbd.dwFlags & DSBCAPS_CTRLVOLUME)) {
        WARN("control unavailable\n");
        return DSERR_CONTROLUNAVAIL;
    }

    if (vol == NULL) {
        WARN("invalid parameter: vol = NULL\n");
        return DSERR_INVALIDPARAM;
    }

        if (!device->hwbuf)
        {
        waveOutGetVolume(device->hwo, &ampfactors);
        device->volpan.dwTotalLeftAmpFactor=ampfactors & 0xffff;
        device->volpan.dwTotalRightAmpFactor=ampfactors >> 16;
        DSOUND_AmpFactorToVolPan(&device->volpan);
        }
        *vol = device->volpan.lVolume;
    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_SetFrequency(
    LPDIRECTSOUNDBUFFER iface,DWORD freq
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
    TRACE("(%p,%d)\n",This,freq);

    /* You cannot set the frequency of the primary buffer */
    WARN("control unavailable\n");
    return DSERR_CONTROLUNAVAIL;
}

static HRESULT WINAPI PrimaryBufferImpl_Play(
    LPDIRECTSOUNDBUFFER iface,DWORD reserved1,DWORD reserved2,DWORD flags
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p,%08x,%08x,%08x)\n", iface, reserved1, reserved2, flags);

    if (!(flags & DSBPLAY_LOOPING)) {
        WARN("invalid parameter: flags = %08x\n", flags);
        return DSERR_INVALIDPARAM;
    }

    /* **** */
    EnterCriticalSection(&(device->mixlock));

    if (device->state == STATE_STOPPED)
        device->state = STATE_STARTING;
    else if (device->state == STATE_STOPPING)
        device->state = STATE_PLAYING;

    LeaveCriticalSection(&(device->mixlock));
    /* **** */

    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_Stop(LPDIRECTSOUNDBUFFER iface)
{
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p)\n", iface);

    /* **** */
    EnterCriticalSection(&(device->mixlock));

    if (device->state == STATE_PLAYING)
        device->state = STATE_STOPPING;
    else if (device->state == STATE_STARTING)
        device->state = STATE_STOPPED;

    LeaveCriticalSection(&(device->mixlock));
    /* **** */

    return DS_OK;
}

static ULONG WINAPI PrimaryBufferImpl_AddRef(LPDIRECTSOUNDBUFFER iface)
{
    IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
    ULONG ref = InterlockedIncrement(&(This->ref));
    TRACE("(%p) ref was %d\n", This, ref - 1);
    if(ref == 1)
        InterlockedIncrement(&This->numIfaces);
    return ref;
}

void primarybuffer_destroy(IDirectSoundBufferImpl *This)
{
    This->device->primary = NULL;
    HeapFree(GetProcessHeap(), 0, This);
    TRACE("(%p) released\n", This);
}

static ULONG WINAPI PrimaryBufferImpl_Release(LPDIRECTSOUNDBUFFER iface)
{
    IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
    DWORD ref = InterlockedDecrement(&(This->ref));
    TRACE("(%p) ref was %d\n", This, ref + 1);

    if (!ref && !InterlockedDecrement(&This->numIfaces))
        primarybuffer_destroy(This);
    return ref;
}

static HRESULT WINAPI PrimaryBufferImpl_GetCurrentPosition(
    LPDIRECTSOUNDBUFFER iface,LPDWORD playpos,LPDWORD writepos
) {
    HRESULT hres;
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p,%p,%p)\n", iface, playpos, writepos);

    /* **** */
    EnterCriticalSection(&(device->mixlock));

    hres = DSOUND_PrimaryGetPosition(device, playpos, writepos);
    if (hres != DS_OK) {
        WARN("DSOUND_PrimaryGetPosition failed\n");
        LeaveCriticalSection(&(device->mixlock));
        return hres;
    }
    if (writepos) {
        if (device->state != STATE_STOPPED)
            /* apply the documented 10ms lead to writepos */
            *writepos += device->writelead;
        while (*writepos >= device->buflen) *writepos -= device->buflen;
    }

    LeaveCriticalSection(&(device->mixlock));
    /* **** */

    TRACE("playpos = %d, writepos = %d (%p, time=%d)\n", playpos?*playpos:0, writepos?*writepos:0, device, GetTickCount());
    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_GetStatus(
    LPDIRECTSOUNDBUFFER iface,LPDWORD status
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p,%p)\n", iface, status);

    if (status == NULL) {
        WARN("invalid parameter: status == NULL\n");
        return DSERR_INVALIDPARAM;
    }

    *status = 0;
    if ((device->state == STATE_STARTING) ||
        (device->state == STATE_PLAYING))
        *status |= DSBSTATUS_PLAYING | DSBSTATUS_LOOPING;

    TRACE("status=%x\n", *status);
    return DS_OK;
}


static HRESULT WINAPI PrimaryBufferImpl_GetFormat(
    LPDIRECTSOUNDBUFFER iface,
    LPWAVEFORMATEX lpwf,
    DWORD wfsize,
    LPDWORD wfwritten)
{
    DWORD size;
    IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
    DirectSoundDevice *device = This->device;
    TRACE("(%p,%p,%d,%p)\n", iface, lpwf, wfsize, wfwritten);

    size = sizeof(WAVEFORMATEX) + device->pwfx->cbSize;

    if (lpwf) { /* NULL is valid */
        if (wfsize >= size) {
            CopyMemory(lpwf,device->pwfx,size);
            if (wfwritten)
                *wfwritten = size;
        } else {
            WARN("invalid parameter: wfsize too small\n");
            if (wfwritten)
                *wfwritten = 0;
            return DSERR_INVALIDPARAM;
        }
    } else {
        if (wfwritten)
            *wfwritten = sizeof(WAVEFORMATEX) + device->pwfx->cbSize;
        else {
            WARN("invalid parameter: wfwritten == NULL\n");
            return DSERR_INVALIDPARAM;
        }
    }

    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_Lock(
    LPDIRECTSOUNDBUFFER iface,DWORD writecursor,DWORD writebytes,LPVOID *lplpaudioptr1,LPDWORD audiobytes1,LPVOID *lplpaudioptr2,LPDWORD audiobytes2,DWORD flags
) {
    HRESULT hres;
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p,%d,%d,%p,%p,%p,%p,0x%08x) at %d\n",
        iface,
        writecursor,
        writebytes,
        lplpaudioptr1,
        audiobytes1,
        lplpaudioptr2,
        audiobytes2,
        flags,
        GetTickCount()
    );

        if (!audiobytes1)
            return DSERR_INVALIDPARAM;

    if (device->priolevel != DSSCL_WRITEPRIMARY) {
        WARN("failed priority check!\n");
        return DSERR_PRIOLEVELNEEDED;
    }

        /* when this flag is set, writecursor is meaningless and must be calculated */
    if (flags & DSBLOCK_FROMWRITECURSOR) {
        /* GetCurrentPosition does too much magic to duplicate here */
        hres = IDirectSoundBuffer_GetCurrentPosition(iface, NULL, &writecursor);
        if (hres != DS_OK) {
            WARN("IDirectSoundBuffer_GetCurrentPosition failed\n");
            return hres;
        }
    }

        /* when this flag is set, writebytes is meaningless and must be set */
    if (flags & DSBLOCK_ENTIREBUFFER)
        writebytes = device->buflen;

        if (writecursor >= device->buflen) {
                WARN("Invalid parameter, writecursor: %u >= buflen: %u\n",
             writecursor, device->buflen);
                return DSERR_INVALIDPARAM;
        }

        if (writebytes > device->buflen) {
                WARN("Invalid parameter, writebytes: %u > buflen: %u\n",
             writebytes, device->buflen);
                return DSERR_INVALIDPARAM;
        }

    if (!(device->drvdesc.dwFlags & DSDDESC_DONTNEEDPRIMARYLOCK) && device->hwbuf) {
        hres = IDsDriverBuffer_Lock(device->hwbuf,
                        lplpaudioptr1, audiobytes1,
                        lplpaudioptr2, audiobytes2,
                        writecursor, writebytes,
                        0);
        if (hres != DS_OK) {
            WARN("IDsDriverBuffer_Lock failed\n");
            return hres;
        }
    } else {
        if (writecursor+writebytes <= device->buflen) {
            *(LPBYTE*)lplpaudioptr1 = device->buffer+writecursor;
            *audiobytes1 = writebytes;
            if (lplpaudioptr2)
                *(LPBYTE*)lplpaudioptr2 = NULL;
            if (audiobytes2)
                *audiobytes2 = 0;
            TRACE("->%d.0\n",writebytes);
        } else {
            *(LPBYTE*)lplpaudioptr1 = device->buffer+writecursor;
            *audiobytes1 = device->buflen-writecursor;
            if (lplpaudioptr2)
                *(LPBYTE*)lplpaudioptr2 = device->buffer;
            if (audiobytes2)
                *audiobytes2 = writebytes-(device->buflen-writecursor);
            TRACE("->%d.%d\n",*audiobytes1,audiobytes2?*audiobytes2:0);
        }
    }
    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_SetCurrentPosition(
    LPDIRECTSOUNDBUFFER iface,DWORD newpos
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
    TRACE("(%p,%d)\n",This,newpos);

    /* You cannot set the position of the primary buffer */
    WARN("invalid call\n");
    return DSERR_INVALIDCALL;
}

static HRESULT WINAPI PrimaryBufferImpl_SetPan(
    LPDIRECTSOUNDBUFFER iface,LONG pan
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    DWORD ampfactors;
        HRESULT hres = DS_OK;
    TRACE("(%p,%d)\n", iface, pan);

    if (!(This->dsbd.dwFlags & DSBCAPS_CTRLPAN)) {
        WARN("control unavailable\n");
        return DSERR_CONTROLUNAVAIL;
    }

    if ((pan > DSBPAN_RIGHT) || (pan < DSBPAN_LEFT)) {
        WARN("invalid parameter: pan = %d\n", pan);
        return DSERR_INVALIDPARAM;
    }

    /* **** */
    EnterCriticalSection(&(device->mixlock));

        if (!device->hwbuf)
        {
            waveOutGetVolume(device->hwo, &ampfactors);
            device->volpan.dwTotalLeftAmpFactor=ampfactors & 0xffff;
            device->volpan.dwTotalRightAmpFactor=ampfactors >> 16;
            DSOUND_AmpFactorToVolPan(&device->volpan);
        }
        if (pan != device->volpan.lPan) {
            device->volpan.lPan=pan;
            DSOUND_RecalcVolPan(&device->volpan);
            if (device->hwbuf) {
                hres = IDsDriverBuffer_SetVolumePan(device->hwbuf, &device->volpan);
                if (hres != DS_OK)
                    WARN("IDsDriverBuffer_SetVolumePan failed\n");
            } else {
                ampfactors = (device->volpan.dwTotalLeftAmpFactor & 0xffff) | (device->volpan.dwTotalRightAmpFactor << 16);
                waveOutSetVolume(device->hwo, ampfactors);
            }
        }

    LeaveCriticalSection(&(device->mixlock));
    /* **** */

    return hres;
}

static HRESULT WINAPI PrimaryBufferImpl_GetPan(
    LPDIRECTSOUNDBUFFER iface,LPLONG pan
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    DWORD ampfactors;
    TRACE("(%p,%p)\n", iface, pan);

    if (!(This->dsbd.dwFlags & DSBCAPS_CTRLPAN)) {
        WARN("control unavailable\n");
        return DSERR_CONTROLUNAVAIL;
    }

    if (pan == NULL) {
        WARN("invalid parameter: pan == NULL\n");
        return DSERR_INVALIDPARAM;
    }

        if (!device->hwbuf)
        {
        waveOutGetVolume(device->hwo, &ampfactors);
        device->volpan.dwTotalLeftAmpFactor=ampfactors & 0xffff;
        device->volpan.dwTotalRightAmpFactor=ampfactors >> 16;
        DSOUND_AmpFactorToVolPan(&device->volpan);
        }
    *pan = device->volpan.lPan;
    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_Unlock(
    LPDIRECTSOUNDBUFFER iface,LPVOID p1,DWORD x1,LPVOID p2,DWORD x2
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p,%p,%d,%p,%d)\n", iface, p1, x1, p2, x2);

    if (device->priolevel != DSSCL_WRITEPRIMARY) {
        WARN("failed priority check!\n");
        return DSERR_PRIOLEVELNEEDED;
    }

    if (!(device->drvdesc.dwFlags & DSDDESC_DONTNEEDPRIMARYLOCK) && device->hwbuf) {
        HRESULT hres;

        if ((char *)p1 - (char *)device->buffer + x1 > device->buflen)
            hres = DSERR_INVALIDPARAM;
        else
            hres = IDsDriverBuffer_Unlock(device->hwbuf, p1, x1, p2, x2);

        if (hres != DS_OK) {
            WARN("IDsDriverBuffer_Unlock failed\n");
            return hres;
        }
    }

    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_Restore(
    LPDIRECTSOUNDBUFFER iface
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
    FIXME("(%p):stub\n",This);
    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_GetFrequency(
    LPDIRECTSOUNDBUFFER iface,LPDWORD freq
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p,%p)\n", iface, freq);

    if (freq == NULL) {
        WARN("invalid parameter: freq == NULL\n");
        return DSERR_INVALIDPARAM;
    }

    if (!(This->dsbd.dwFlags & DSBCAPS_CTRLFREQUENCY)) {
        WARN("control unavailable\n");
        return DSERR_CONTROLUNAVAIL;
    }

    *freq = device->pwfx->nSamplesPerSec;
    TRACE("-> %d\n", *freq);

    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_Initialize(
    LPDIRECTSOUNDBUFFER iface,LPDIRECTSOUND dsound,LPCDSBUFFERDESC dbsd
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
    WARN("(%p) already initialized\n", This);
    return DSERR_ALREADYINITIALIZED;
}

static HRESULT WINAPI PrimaryBufferImpl_GetCaps(
    LPDIRECTSOUNDBUFFER iface,LPDSBCAPS caps
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p,%p)\n", iface, caps);

    if (caps == NULL) {
        WARN("invalid parameter: caps == NULL\n");
        return DSERR_INVALIDPARAM;
    }

    if (caps->dwSize < sizeof(*caps)) {
        WARN("invalid parameter: caps->dwSize = %d\n", caps->dwSize);
        return DSERR_INVALIDPARAM;
    }

    caps->dwFlags = This->dsbd.dwFlags;
    caps->dwBufferBytes = device->buflen;

    /* Windows reports these as zero */
    caps->dwUnlockTransferRate = 0;
    caps->dwPlayCpuOverhead = 0;

    return DS_OK;
}

static HRESULT WINAPI PrimaryBufferImpl_QueryInterface(
    LPDIRECTSOUNDBUFFER iface,REFIID riid,LPVOID *ppobj
) {
        IDirectSoundBufferImpl *This = impl_from_IDirectSoundBuffer(iface);
        DirectSoundDevice *device = This->device;
    TRACE("(%p,%s,%p)\n", iface, debugstr_guid(riid), ppobj);

    if (ppobj == NULL) {
        WARN("invalid parameter\n");
        return E_INVALIDARG;
    }

    *ppobj = NULL;  /* assume failure */

    if ( IsEqualGUID(riid, &IID_IUnknown) ||
         IsEqualGUID(riid, &IID_IDirectSoundBuffer) ) {
        IDirectSoundBuffer_AddRef((LPDIRECTSOUNDBUFFER)This);
        *ppobj = This;
        return S_OK;
    }

    /* DirectSoundBuffer and DirectSoundBuffer8 are different and */
    /* a primary buffer can't have a DirectSoundBuffer8 interface */
    if ( IsEqualGUID( &IID_IDirectSoundBuffer8, riid ) ) {
        WARN("app requested DirectSoundBuffer8 on primary buffer\n");
        return E_NOINTERFACE;
    }

    if ( IsEqualGUID( &IID_IDirectSoundNotify, riid ) ) {
        ERR("app requested IDirectSoundNotify on primary buffer\n");
        /* FIXME: should we support this? */
        return E_NOINTERFACE;
    }

    if ( IsEqualGUID( &IID_IDirectSound3DBuffer, riid ) ) {
        ERR("app requested IDirectSound3DBuffer on primary buffer\n");
        return E_NOINTERFACE;
    }

        if ( IsEqualGUID( &IID_IDirectSound3DListener, riid ) ) {
        if (!device->listener)
            IDirectSound3DListenerImpl_Create(device, &device->listener);
        if (device->listener) {
            *ppobj = device->listener;
            IDirectSound3DListener_AddRef((LPDIRECTSOUND3DLISTENER)*ppobj);
            return S_OK;
        }

        WARN("IID_IDirectSound3DListener failed\n");
        return E_NOINTERFACE;
    }

    if ( IsEqualGUID( &IID_IKsPropertySet, riid ) ) {
        FIXME("app requested IKsPropertySet on primary buffer\n");
        return E_NOINTERFACE;
    }

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

static const IDirectSoundBufferVtbl dspbvt =
{
    PrimaryBufferImpl_QueryInterface,
    PrimaryBufferImpl_AddRef,
    PrimaryBufferImpl_Release,
    PrimaryBufferImpl_GetCaps,
    PrimaryBufferImpl_GetCurrentPosition,
    PrimaryBufferImpl_GetFormat,
    PrimaryBufferImpl_GetVolume,
    PrimaryBufferImpl_GetPan,
        PrimaryBufferImpl_GetFrequency,
    PrimaryBufferImpl_GetStatus,
    PrimaryBufferImpl_Initialize,
    PrimaryBufferImpl_Lock,
    PrimaryBufferImpl_Play,
    PrimaryBufferImpl_SetCurrentPosition,
    PrimaryBufferImpl_SetFormat,
    PrimaryBufferImpl_SetVolume,
    PrimaryBufferImpl_SetPan,
    PrimaryBufferImpl_SetFrequency,
    PrimaryBufferImpl_Stop,
    PrimaryBufferImpl_Unlock,
    PrimaryBufferImpl_Restore
};

HRESULT primarybuffer_create(DirectSoundDevice *device, IDirectSoundBufferImpl **ppdsb,
    const DSBUFFERDESC *dsbd)
{
    IDirectSoundBufferImpl *dsb;
    TRACE("%p,%p,%p)\n",device,ppdsb,dsbd);

    if (dsbd->lpwfxFormat) {
        WARN("invalid parameter: dsbd->lpwfxFormat != NULL\n");
        *ppdsb = NULL;
        return DSERR_INVALIDPARAM;
    }

    dsb = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(*dsb));

    if (dsb == NULL) {
        WARN("out of memory\n");
        *ppdsb = NULL;
        return DSERR_OUTOFMEMORY;
    }

        dsb->ref = 1;
        dsb->numIfaces = 1;
    dsb->device = device;
    dsb->IDirectSoundBuffer8_iface.lpVtbl = (IDirectSoundBuffer8Vtbl *)&dspbvt;
    dsb->dsbd = *dsbd;

    TRACE("Created primary buffer at %p\n", dsb);
    TRACE("(formattag=0x%04x,chans=%d,samplerate=%d,"
        "bytespersec=%d,blockalign=%d,bitspersamp=%d,cbSize=%d)\n",
        device->pwfx->wFormatTag, device->pwfx->nChannels,
                device->pwfx->nSamplesPerSec, device->pwfx->nAvgBytesPerSec,
                device->pwfx->nBlockAlign, device->pwfx->wBitsPerSample,
                device->pwfx->cbSize);

    *ppdsb = dsb;
    return S_OK;
}