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primary.c

/*                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
 */

#include <stdarg.h>

#define NONAMELESSSTRUCT
#define NONAMELESSUNION
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "mmsystem.h"
#include "winternl.h"
#include "mmddk.h"
#include "wine/debug.h"
#include "dsound.h"
#include "dsdriver.h"
#include "dsound_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(dsound);

/** Calculate how long a fragment length of about 10 ms should be in frames
 *
 * nSamplesPerSec: Frequency rate in samples per second
 * nBlockAlign: Size of a single blockalign
 *
 * Returns:
 * Size in bytes of a single fragment
 */
DWORD DSOUND_fraglen(DWORD nSamplesPerSec, DWORD nBlockAlign)
{
    DWORD fraglen = 256 * nBlockAlign;

    /* Compensate for only being roughly accurate */
    if (nSamplesPerSec <= 26000)
        fraglen /= 2;

    if (nSamplesPerSec <= 10000)
        fraglen /= 2;

    if (nSamplesPerSec >= 80000)
        fraglen *= 2;

    return fraglen;
}

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)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;

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

            hres = mmErr(waveOutOpen(&(device->hwo), device->drvdesc.dnDevNode, device->pwfx, (DWORD_PTR)DSOUND_callback, (DWORD)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)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;
}

HRESULT DSOUND_PrimarySetFormat(DirectSoundDevice *device, LPCWAVEFORMATEX wfex, BOOL forced)
{
      HRESULT err = DSERR_BUFFERLOST;
      int i, alloc_size, cp_size;
      DWORD nSamplesPerSec, bpp, chans;
      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));

        if (wfex->wFormatTag == WAVE_FORMAT_PCM) {
            alloc_size = sizeof(WAVEFORMATEX);
            cp_size = sizeof(PCMWAVEFORMAT);
        } else
            alloc_size = cp_size = sizeof(WAVEFORMATEX) + wfex->cbSize;

        device->pwfx = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,device->pwfx,alloc_size);

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

        CopyMemory(device->pwfx, wfex, cp_size);

      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))
            {
                  err = DSERR_BUFFERLOST;
                    CopyMemory(device->pwfx, wfex, cp_size);
            }

            if (err != DSERR_BUFFERLOST && FAILED(err)) {
                  WARN("IDsDriverBuffer_SetFormat failed\n");
                  if (!forced)
                        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));
      /* **** */

      return err;
}

/*******************************************************************************
 *          PrimaryBuffer
 */
/* 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)
{
    DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->device;
    TRACE("(%p,%p)\n", iface, wfex);
    return DSOUND_PrimarySetFormat(device, wfex, device->priolevel == DSSCL_WRITEPRIMARY);
}

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

      if (!(device->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
) {
      DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->device;
      DWORD ampfactors;
      TRACE("(%p,%p)\n", iface, vol);

      if (!(device->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
) {
      PrimaryBufferImpl *This = (PrimaryBufferImpl *)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
) {
      DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->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)
{
      DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->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)
{
    PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
    ULONG ref = InterlockedIncrement(&(This->ref));
    TRACE("(%p) ref was %d\n", This, ref - 1);
    return ref;
}

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

    if (!ref) {
        This->device->primary = NULL;
        HeapFree(GetProcessHeap(), 0, This);
        TRACE("(%p) released\n", This);
    }
    return ref;
}

static HRESULT WINAPI PrimaryBufferImpl_GetCurrentPosition(
      LPDIRECTSOUNDBUFFER iface,LPDWORD playpos,LPDWORD writepos
) {
      HRESULT     hres;
        DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->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
) {
        DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->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;
    DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->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;
        DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->device;
      TRACE("(%p,%d,%d,%p,%p,%p,%p,0x%08x) at %d\n",
            iface,
            writecursor,
            writebytes,
            lplpaudioptr1,
            audiobytes1,
            lplpaudioptr2,
            audiobytes2,
            flags,
            GetTickCount()
      );

      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
) {
      PrimaryBufferImpl *This = (PrimaryBufferImpl *)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
) {
        DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->device;
      DWORD ampfactors;
        HRESULT hres = DS_OK;
      TRACE("(%p,%d)\n", iface, pan);

      if (!(device->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
) {
        DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->device;
      DWORD ampfactors;
      TRACE("(%p,%p)\n", iface, pan);

      if (!(device->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
) {
        DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->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;
            
            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
) {
      PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
      FIXME("(%p):stub\n",This);
      return DS_OK;
}

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

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

      if (!(device->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
) {
      PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
      WARN("(%p) already initialized\n", This);
      return DSERR_ALREADYINITIALIZED;
}

static HRESULT WINAPI PrimaryBufferImpl_GetCaps(
      LPDIRECTSOUNDBUFFER iface,LPDSBCAPS caps
) {
        DirectSoundDevice *device = ((PrimaryBufferImpl *)iface)->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 = device->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
) {
        PrimaryBufferImpl *This = (PrimaryBufferImpl *)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 PrimaryBufferImpl_Create(
      DirectSoundDevice * device,
      PrimaryBufferImpl ** ppdsb,
      LPCDSBUFFERDESC dsbd)
{
      PrimaryBufferImpl *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 = 0;
      dsb->device = device;
      dsb->lpVtbl = &dspbvt;

      device->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;
}

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