buffer.c

来自「一个类似windows」· C语言 代码 · 共 1,512 行 · 第 1/3 页

	}

	TRACE("Created buffer at %p\n", dsb);

	dsb->ref = 0;
	dsb->dsb = 0;
	dsb->dsound = ds;
	dsb->lpVtbl = &dsbvt;
	dsb->iks = NULL;

	/* size depends on version */
	CopyMemory(&dsb->dsbd, dsbd, dsbd->dwSize);

	/* variable sized struct so calculate size based on format */
	if (wfex->wFormatTag == WAVE_FORMAT_PCM) {
		alloc_size = sizeof(WAVEFORMATEX);
		cp_size = sizeof(PCMWAVEFORMAT);
	} else 
		alloc_size = cp_size = sizeof(WAVEFORMATEX) + wfex->cbSize;

	dsb->pwfx = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,alloc_size);
	if (dsb->pwfx == NULL) {
		WARN("out of memory\n");
		HeapFree(GetProcessHeap(),0,dsb);
		*pdsb = NULL;
		return DSERR_OUTOFMEMORY;
	}

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

	if (dsbd->dwBufferBytes % dsbd->lpwfxFormat->nBlockAlign)
		dsb->buflen = dsbd->dwBufferBytes + 
			(dsbd->lpwfxFormat->nBlockAlign - 
			(dsbd->dwBufferBytes % dsbd->lpwfxFormat->nBlockAlign));
	else
		dsb->buflen = dsbd->dwBufferBytes;

	dsb->freq = dsbd->lpwfxFormat->nSamplesPerSec;
	dsb->notify = NULL;
	dsb->notifies = NULL;
	dsb->nrofnotifies = 0;
	dsb->hwnotify = 0;

	/* Check necessary hardware mixing capabilities */
	if (wfex->nChannels==2) capf |= DSCAPS_SECONDARYSTEREO;
	else capf |= DSCAPS_SECONDARYMONO;
	if (wfex->wBitsPerSample==16) capf |= DSCAPS_SECONDARY16BIT;
	else capf |= DSCAPS_SECONDARY8BIT;

	use_hw = (ds->device->drvcaps.dwFlags & capf) == capf;
	TRACE("use_hw = 0x%08x, capf = 0x%08lx, ds->drvcaps.dwFlags = 0x%08lx\n", use_hw, capf, ds->device->drvcaps.dwFlags);

	/* FIXME: check hardware sample rate mixing capabilities */
	/* FIXME: check app hints for software/hardware buffer (STATIC, LOCHARDWARE, etc) */
	/* FIXME: check whether any hardware buffers are left */
	/* FIXME: handle DSDHEAP_CREATEHEAP for hardware buffers */

	/* Allocate an empty buffer */
	dsb->buffer = HeapAlloc(GetProcessHeap(),0,sizeof(*(dsb->buffer)));
	if (dsb->buffer == NULL) {
		WARN("out of memory\n");
		HeapFree(GetProcessHeap(),0,dsb->pwfx);
		HeapFree(GetProcessHeap(),0,dsb);
		*pdsb = NULL;
		return DSERR_OUTOFMEMORY;
	}

	/* Allocate system memory for buffer if applicable */
	if ((ds->device->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY) || !use_hw) {
		dsb->buffer->memory = HeapAlloc(GetProcessHeap(),0,dsb->buflen);
		if (dsb->buffer->memory == NULL) {
			WARN("out of memory\n");
			HeapFree(GetProcessHeap(),0,dsb->pwfx);
			HeapFree(GetProcessHeap(),0,dsb->buffer);
			HeapFree(GetProcessHeap(),0,dsb);
			*pdsb = NULL;
			return DSERR_OUTOFMEMORY;
		}
		dsb->buffer->ref = 1;
		FillMemory(dsb->buffer->memory, dsb->buflen, dsbd->lpwfxFormat->wBitsPerSample == 8 ? 128 : 0);
	}

	/* Allocate the hardware buffer */
	if (use_hw) {
		err = IDsDriver_CreateSoundBuffer(ds->device->driver,wfex,dsbd->dwFlags,0,
						  &(dsb->buflen),&(dsb->buffer->memory),
						  (LPVOID*)&(dsb->hwbuf));
                /* fall back to software buffer on failure */
		if (err != DS_OK) {
			TRACE("IDsDriver_CreateSoundBuffer failed, falling back to software buffer\n");
			use_hw = 0;
			if (ds->device->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY) {
				dsb->buffer->memory = HeapAlloc(GetProcessHeap(),0,dsb->buflen);
				if (dsb->buffer->memory == NULL) {
					WARN("out of memory\n");
					HeapFree(GetProcessHeap(),0,dsb->buffer);
					HeapFree(GetProcessHeap(),0,dsb->pwfx);
					HeapFree(GetProcessHeap(),0,dsb);
					*pdsb = NULL;
					return DSERR_OUTOFMEMORY;
				}
				dsb->buffer->ref = 1;
				FillMemory(dsb->buffer->memory, dsb->buflen, dsbd->lpwfxFormat->wBitsPerSample == 8 ? 128 : 0);
			}
			err = DS_OK;
		}
	}

	/* calculate fragment size and write lead */
	DSOUND_RecalcFormat(dsb);

	/* It's not necessary to initialize values to zero since */
	/* we allocated this structure with HEAP_ZERO_MEMORY... */
	dsb->playpos = 0;
	dsb->buf_mixpos = 0;
	dsb->state = STATE_STOPPED;

	dsb->freqAdjust = (dsb->freq << DSOUND_FREQSHIFT) /
		ds->device->pwfx->nSamplesPerSec;
	dsb->nAvgBytesPerSec = dsb->freq *
		dsbd->lpwfxFormat->nBlockAlign;

	if (dsb->dsbd.dwFlags & DSBCAPS_CTRL3D) {
		dsb->ds3db_ds3db.dwSize = sizeof(DS3DBUFFER);
		dsb->ds3db_ds3db.vPosition.x = 0.0;
		dsb->ds3db_ds3db.vPosition.y = 0.0;
		dsb->ds3db_ds3db.vPosition.z = 0.0;
		dsb->ds3db_ds3db.vVelocity.x = 0.0;
		dsb->ds3db_ds3db.vVelocity.y = 0.0;
		dsb->ds3db_ds3db.vVelocity.z = 0.0;
		dsb->ds3db_ds3db.dwInsideConeAngle = DS3D_DEFAULTCONEANGLE;
		dsb->ds3db_ds3db.dwOutsideConeAngle = DS3D_DEFAULTCONEANGLE;
		dsb->ds3db_ds3db.vConeOrientation.x = 0.0;
		dsb->ds3db_ds3db.vConeOrientation.y = 0.0;
		dsb->ds3db_ds3db.vConeOrientation.z = 0.0;
		dsb->ds3db_ds3db.lConeOutsideVolume = DS3D_DEFAULTCONEOUTSIDEVOLUME;
		dsb->ds3db_ds3db.flMinDistance = DS3D_DEFAULTMINDISTANCE;
		dsb->ds3db_ds3db.flMaxDistance = DS3D_DEFAULTMAXDISTANCE;
		dsb->ds3db_ds3db.dwMode = DS3DMODE_NORMAL;

		dsb->ds3db_need_recalc = FALSE;
		DSOUND_Calc3DBuffer(dsb);
	} else
		DSOUND_RecalcVolPan(&(dsb->volpan));

	InitializeCriticalSection(&(dsb->lock));
        dsb->lock.DebugInfo->Spare[0] = (DWORD_PTR)"DSOUNDBUFFER_lock";

	/* register buffer if not primary */
	if (!(dsbd->dwFlags & DSBCAPS_PRIMARYBUFFER)) {
		err = DSOUND_AddBuffer(ds, dsb);
		if (err != DS_OK) {
			HeapFree(GetProcessHeap(),0,dsb->buffer->memory);
			HeapFree(GetProcessHeap(),0,dsb->buffer);
        		dsb->lock.DebugInfo->Spare[0] = 0;
			DeleteCriticalSection(&(dsb->lock));
			HeapFree(GetProcessHeap(),0,dsb->pwfx);
			HeapFree(GetProcessHeap(),0,dsb);
			dsb = NULL;
		}
	}

	*pdsb = dsb;
	return err;
}

HRESULT WINAPI IDirectSoundBufferImpl_Destroy(
    IDirectSoundBufferImpl *pdsb)
{
    TRACE("(%p)\n",pdsb);

    /* This keeps the *_Destroy functions from possibly deleting
     * this object until it is ready to be deleted */
    IDirectSoundBufferImpl_AddRef((LPDIRECTSOUNDBUFFER8)pdsb);

    if (pdsb->iks) {
        WARN("iks not NULL\n");
        IKsBufferPropertySetImpl_Destroy(pdsb->iks);
        pdsb->iks = NULL;
    }

    if (pdsb->ds3db) {
        WARN("ds3db not NULL\n");
        IDirectSound3DBufferImpl_Destroy(pdsb->ds3db);
        pdsb->ds3db = NULL;
    }

    if (pdsb->notify) {
        WARN("notify not NULL\n");
        IDirectSoundNotifyImpl_Destroy(pdsb->notify);
        pdsb->notify = NULL;
    }

    if (pdsb->dsb) {
        WARN("dsb not NULL\n");
        SecondaryBufferImpl_Destroy(pdsb->dsb);
        pdsb->dsb = NULL;
    }

    while (IDirectSoundBuffer8_Release((LPDIRECTSOUNDBUFFER8)pdsb) > 0);

    return S_OK;
}

/*******************************************************************************
 *		SecondaryBuffer
 */

static HRESULT WINAPI SecondaryBufferImpl_QueryInterface(
	LPDIRECTSOUNDBUFFER8 iface,REFIID riid,LPVOID *ppobj)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

	return IDirectSoundBufferImpl_QueryInterface((LPDIRECTSOUNDBUFFER8)This->dsb,riid,ppobj);
}

static ULONG WINAPI SecondaryBufferImpl_AddRef(LPDIRECTSOUNDBUFFER8 iface)
{
    IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
    ULONG ref = InterlockedIncrement(&(This->ref));
    TRACE("(%p) ref was %ld\n", This, ref - 1);
    return ref;
}

static ULONG WINAPI SecondaryBufferImpl_Release(LPDIRECTSOUNDBUFFER8 iface)
{
    IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
    ULONG ref = InterlockedDecrement(&(This->ref));
    TRACE("(%p) ref was %ld\n", This, ref + 1);

    if (!ref) {
        This->dsb->dsb = NULL;
        IDirectSoundBuffer_Release((LPDIRECTSOUNDBUFFER8)This->dsb);
        HeapFree(GetProcessHeap(), 0, This);
        TRACE("(%p) released\n", This);
    }
    return ref;
}

static HRESULT WINAPI SecondaryBufferImpl_GetCaps(
	LPDIRECTSOUNDBUFFER8 iface,LPDSBCAPS caps)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
  	TRACE("(%p)->(%p)\n",This,caps);

	return IDirectSoundBufferImpl_GetCaps((LPDIRECTSOUNDBUFFER8)This->dsb,caps);
}

static HRESULT WINAPI SecondaryBufferImpl_GetCurrentPosition(
	LPDIRECTSOUNDBUFFER8 iface,LPDWORD playpos,LPDWORD writepos)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%p,%p)\n",This,playpos,writepos);

	return IDirectSoundBufferImpl_GetCurrentPosition((LPDIRECTSOUNDBUFFER8)This->dsb,playpos,writepos);
}

static HRESULT WINAPI SecondaryBufferImpl_GetFormat(
	LPDIRECTSOUNDBUFFER8 iface,LPWAVEFORMATEX lpwf,DWORD wfsize,LPDWORD wfwritten)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%p,%ld,%p)\n",This,lpwf,wfsize,wfwritten);

	return IDirectSoundBufferImpl_GetFormat((LPDIRECTSOUNDBUFFER8)This->dsb,lpwf,wfsize,wfwritten);
}

static HRESULT WINAPI SecondaryBufferImpl_GetVolume(
	LPDIRECTSOUNDBUFFER8 iface,LPLONG vol)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%p)\n",This,vol);

	return IDirectSoundBufferImpl_GetVolume((LPDIRECTSOUNDBUFFER8)This->dsb,vol);
}

static HRESULT WINAPI SecondaryBufferImpl_GetPan(
	LPDIRECTSOUNDBUFFER8 iface,LPLONG pan)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%p)\n",This,pan);

	return IDirectSoundBufferImpl_GetPan((LPDIRECTSOUNDBUFFER8)This->dsb,pan);
}

static HRESULT WINAPI SecondaryBufferImpl_GetFrequency(
	LPDIRECTSOUNDBUFFER8 iface,LPDWORD freq)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%p)\n",This,freq);

	return IDirectSoundBufferImpl_GetFrequency((LPDIRECTSOUNDBUFFER8)This->dsb,freq);
}

static HRESULT WINAPI SecondaryBufferImpl_GetStatus(
	LPDIRECTSOUNDBUFFER8 iface,LPDWORD status)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%p)\n",This,status);

	return IDirectSoundBufferImpl_GetStatus((LPDIRECTSOUNDBUFFER8)This->dsb,status);
}

static HRESULT WINAPI SecondaryBufferImpl_Initialize(
	LPDIRECTSOUNDBUFFER8 iface,LPDIRECTSOUND dsound,LPCDSBUFFERDESC dbsd)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%p,%p)\n",This,dsound,dbsd);

	return IDirectSoundBufferImpl_Initialize((LPDIRECTSOUNDBUFFER8)This->dsb,dsound,dbsd);
}

static HRESULT WINAPI SecondaryBufferImpl_Lock(
    LPDIRECTSOUNDBUFFER8 iface,
    DWORD writecursor,
    DWORD writebytes,
    LPVOID lplpaudioptr1,
    LPDWORD audiobytes1,
    LPVOID lplpaudioptr2,
    LPDWORD audiobytes2,
    DWORD dwFlags)
{
    SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
    TRACE("(%p,%ld,%ld,%p,%p,%p,%p,0x%08lx)\n",
        This,writecursor,writebytes,lplpaudioptr1,audiobytes1,lplpaudioptr2,audiobytes2,dwFlags);

    return IDirectSoundBufferImpl_Lock((LPDIRECTSOUNDBUFFER8)This->dsb,
        writecursor,writebytes,lplpaudioptr1,audiobytes1,lplpaudioptr2,audiobytes2,dwFlags);
}

static HRESULT WINAPI SecondaryBufferImpl_Play(
	LPDIRECTSOUNDBUFFER8 iface,DWORD reserved1,DWORD reserved2,DWORD flags)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%08lx,%08lx,%08lx)\n",This,reserved1,reserved2,flags);

	return IDirectSoundBufferImpl_Play((LPDIRECTSOUNDBUFFER8)This->dsb,reserved1,reserved2,flags);
}

static HRESULT WINAPI SecondaryBufferImpl_SetCurrentPosition(
	LPDIRECTSOUNDBUFFER8 iface,DWORD newpos)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%ld)\n",This,newpos);

	return IDirectSoundBufferImpl_SetCurrentPosition((LPDIRECTSOUNDBUFFER8)This->dsb,newpos);
}

static HRESULT WINAPI SecondaryBufferImpl_SetFormat(
	LPDIRECTSOUNDBUFFER8 iface,LPCWAVEFORMATEX wfex)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%p)\n",This,wfex);

	return IDirectSoundBufferImpl_SetFormat((LPDIRECTSOUNDBUFFER8)This->dsb,wfex);
}

static HRESULT WINAPI SecondaryBufferImpl_SetVolume(
	LPDIRECTSOUNDBUFFER8 iface,LONG vol)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%ld)\n",This,vol);

	return IDirectSoundBufferImpl_SetVolume((LPDIRECTSOUNDBUFFER8)This->dsb,vol);
}

static HRESULT WINAPI SecondaryBufferImpl_SetPan(
	LPDIRECTSOUNDBUFFER8 iface,LONG pan)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%ld)\n",This,pan);

	return IDirectSoundBufferImpl_SetPan((LPDIRECTSOUNDBUFFER8)This->dsb,pan);
}

static HRESULT WINAPI SecondaryBufferImpl_SetFrequency(
	LPDIRECTSOUNDBUFFER8 iface,DWORD freq)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%ld)\n",This,freq);

	return IDirectSoundBufferImpl_SetFrequency((LPDIRECTSOUNDBUFFER8)This->dsb,freq);
}

static HRESULT WINAPI SecondaryBufferImpl_Stop(LPDIRECTSOUNDBUFFER8 iface)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p)\n",This);

	return IDirectSoundBufferImpl_Stop((LPDIRECTSOUNDBUFFER8)This->dsb);
}

static HRESULT WINAPI SecondaryBufferImpl_Unlock(
    LPDIRECTSOUNDBUFFER8 iface,
    LPVOID lpvAudioPtr1,
    DWORD dwAudioBytes1,
    LPVOID lpvAudioPtr2,
    DWORD dwAudioBytes2)
{
    SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
    TRACE("(%p,%p,%ld,%p,%ld)\n",
        This, lpvAudioPtr1, dwAudioBytes1, lpvAudioPtr2, dwAudioBytes2);

    return IDirectSoundBufferImpl_Unlock((LPDIRECTSOUNDBUFFER8)This->dsb,
        lpvAudioPtr1,dwAudioBytes1,lpvAudioPtr2,dwAudioBytes2);
}

static HRESULT WINAPI SecondaryBufferImpl_Restore(
	LPDIRECTSOUNDBUFFER8 iface)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p)\n",This);

	return IDirectSoundBufferImpl_Restore((LPDIRECTSOUNDBUFFER8)This->dsb);
}

static HRESULT WINAPI SecondaryBufferImpl_SetFX(
	LPDIRECTSOUNDBUFFER8 iface,DWORD dwEffectsCount,LPDSEFFECTDESC pDSFXDesc,LPDWORD pdwResultCodes)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%lu,%p,%p)\n",This,dwEffectsCount,pDSFXDesc,pdwResultCodes);

	return IDirectSoundBufferImpl_SetFX((LPDIRECTSOUNDBUFFER8)This->dsb,dwEffectsCount,pDSFXDesc,pdwResultCodes);
}

static HRESULT WINAPI SecondaryBufferImpl_AcquireResources(
	LPDIRECTSOUNDBUFFER8 iface,DWORD dwFlags,DWORD dwEffectsCount,LPDWORD pdwResultCodes)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%08lu,%lu,%p)\n",This,dwFlags,dwEffectsCount,pdwResultCodes);

	return IDirectSoundBufferImpl_AcquireResources((LPDIRECTSOUNDBUFFER8)This->dsb,dwFlags,dwEffectsCount,pdwResultCodes);
}

static HRESULT WINAPI SecondaryBufferImpl_GetObjectInPath(
	LPDIRECTSOUNDBUFFER8 iface,REFGUID rguidObject,DWORD dwIndex,REFGUID rguidInterface,LPVOID* ppObject)
{
	SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
	TRACE("(%p,%s,%lu,%s,%p)\n",This,debugstr_guid(rguidObject),dwIndex,debugstr_guid(rguidInterface),ppObject);

	return IDirectSoundBufferImpl_GetObjectInPath((LPDIRECTSOUNDBUFFER8)This->dsb,rguidObject,dwIndex,rguidInterface,ppObject);
}

static const IDirectSoundBuffer8Vtbl sbvt =
{
	SecondaryBufferImpl_QueryInterface,
	SecondaryBufferImpl_AddRef,
	SecondaryBufferImpl_Release,
	SecondaryBufferImpl_GetCaps,
	SecondaryBufferImpl_GetCurrentPosition,
	SecondaryBufferImpl_GetFormat,
	SecondaryBufferImpl_GetVolume,
	SecondaryBufferImpl_GetPan,
	SecondaryBufferImpl_GetFrequency,
	SecondaryBufferImpl_GetStatus,
	SecondaryBufferImpl_Initialize,
	SecondaryBufferImpl_Lock,
	SecondaryBufferImpl_Play,
	SecondaryBufferImpl_SetCurrentPosition,
	SecondaryBufferImpl_SetFormat,
	SecondaryBufferImpl_SetVolume,
	SecondaryBufferImpl_SetPan,
	SecondaryBufferImpl_SetFrequency,
	SecondaryBufferImpl_Stop,
	SecondaryBufferImpl_Unlock,
	SecondaryBufferImpl_Restore,
	SecondaryBufferImpl_SetFX,
	SecondaryBufferImpl_AcquireResources,
	SecondaryBufferImpl_GetObjectInPath
};

HRESULT WINAPI SecondaryBufferImpl_Create(
	IDirectSoundBufferImpl *dsb,
	SecondaryBufferImpl **psb)
{
	SecondaryBufferImpl *sb;
	TRACE("(%p,%p)\n",dsb,psb);

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

	if (sb == 0) {
		WARN("out of memory\n");
		*psb = NULL;
		return DSERR_OUTOFMEMORY;
	}
	sb->ref = 0;
	sb->dsb = dsb;
	sb->lpVtbl = &sbvt;

	IDirectSoundBuffer8_AddRef((LPDIRECTSOUNDBUFFER8)dsb);
	*psb = sb;
	return S_OK;
}

HRESULT WINAPI SecondaryBufferImpl_Destroy(
    SecondaryBufferImpl *pdsb)
{
    TRACE("(%p)\n",pdsb);

    while (SecondaryBufferImpl_Release((LPDIRECTSOUNDBUFFER8)pdsb) > 0);

    return S_OK;
}