DrvHostAudioDSound.cpp@ 98193

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1	/* $Id: DrvHostAudioDSound.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* Host audio driver - DirectSound (Windows).
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
33	#define INITGUID
34	#include <VBox/log.h>
35	#include <iprt/win/windows.h>
36	#include <dsound.h>
37	#include <mmdeviceapi.h>
38	#include <functiondiscoverykeys_devpkey.h>
39	#include <iprt/win/mmreg.h> /* WAVEFORMATEXTENSIBLE */
40
41	#include <iprt/alloc.h>
42	#include <iprt/system.h>
43	#include <iprt/uuid.h>
44	#include <iprt/utf16.h>
45
46	#include <VBox/vmm/pdmaudioinline.h>
47	#include <VBox/vmm/pdmaudiohostenuminline.h>
48
49	#include "VBoxDD.h"
50
51	#ifdef VBOX_WITH_AUDIO_MMNOTIFICATION_CLIENT
52	# include <new> /* For bad_alloc. */
53	# include "DrvHostAudioDSoundMMNotifClient.h"
54	#endif
55
56
57	/*********************************************************************************************************************************
58	* Defined Constants And Macros *
59	*********************************************************************************************************************************/
60	/*
61	* Optional release logging, which a user can turn on with the
62	* 'VBoxManage debugvm' command.
63	* Debug logging still uses the common Log* macros from VBox.
64	* Messages which always should go to the release log use LogRel.
65	*
66	* @deprecated Use LogRelMax, LogRel2 and LogRel3 directly.
67	*/
68	/** General code behavior. */
69	#define DSLOG(a) do { LogRel2(a); } while(0)
70	/** Something which produce a lot of logging during playback/recording. */
71	#define DSLOGF(a) do { LogRel3(a); } while(0)
72	/** Important messages like errors. Limited in the default release log to avoid log flood. */
73	#define DSLOGREL(a) \
74	do { \
75	static int8_t s_cLogged = 0; \
76	if (s_cLogged < 8) { \
77	++s_cLogged; \
78	LogRel(a); \
79	} else DSLOG(a); \
80	} while (0)
81
82	/** Maximum number of attempts to restore the sound buffer before giving up. */
83	#define DRV_DSOUND_RESTORE_ATTEMPTS_MAX 3
84	#if 0 /** @todo r=bird: What are these for? Nobody is using them... */
85	/** Default input latency (in ms). */
86	#define DRV_DSOUND_DEFAULT_LATENCY_MS_IN 50
87	/** Default output latency (in ms). */
88	#define DRV_DSOUND_DEFAULT_LATENCY_MS_OUT 50
89	#endif
90
91
92	/*********************************************************************************************************************************
93	* Structures and Typedefs *
94	*********************************************************************************************************************************/
95	/* Dynamically load dsound.dll. */
96	typedef HRESULT WINAPI FNDIRECTSOUNDENUMERATEW(LPDSENUMCALLBACKW pDSEnumCallback, PVOID pContext);
97	typedef FNDIRECTSOUNDENUMERATEW *PFNDIRECTSOUNDENUMERATEW;
98	typedef HRESULT WINAPI FNDIRECTSOUNDCAPTUREENUMERATEW(LPDSENUMCALLBACKW pDSEnumCallback, PVOID pContext);
99	typedef FNDIRECTSOUNDCAPTUREENUMERATEW *PFNDIRECTSOUNDCAPTUREENUMERATEW;
100	typedef HRESULT WINAPI FNDIRECTSOUNDCAPTURECREATE8(LPCGUID lpcGUID, LPDIRECTSOUNDCAPTURE8 *lplpDSC, LPUNKNOWN pUnkOuter);
101	typedef FNDIRECTSOUNDCAPTURECREATE8 *PFNDIRECTSOUNDCAPTURECREATE8;
102
103	#define VBOX_DSOUND_MAX_EVENTS 3
104
105	typedef enum DSOUNDEVENT
106	{
107	DSOUNDEVENT_NOTIFY = 0,
108	DSOUNDEVENT_INPUT,
109	DSOUNDEVENT_OUTPUT,
110	} DSOUNDEVENT;
111
112	typedef struct DSOUNDHOSTCFG
113	{
114	RTUUID uuidPlay;
115	LPCGUID pGuidPlay;
116	RTUUID uuidCapture;
117	LPCGUID pGuidCapture;
118	} DSOUNDHOSTCFG, *PDSOUNDHOSTCFG;
119
120	typedef struct DSOUNDSTREAM
121	{
122	/** Common part. */
123	PDMAUDIOBACKENDSTREAM Core;
124	/** Entry in DRVHOSTDSOUND::HeadStreams. */
125	RTLISTNODE ListEntry;
126	/** The stream's acquired configuration. */
127	PDMAUDIOSTREAMCFG Cfg;
128	/** Buffer alignment. */
129	uint8_t uAlign;
130	/** Whether this stream is in an enable state on the DirectSound side. */
131	bool fEnabled;
132	bool afPadding[2];
133	/** Size (in bytes) of the DirectSound buffer. */
134	DWORD cbBufSize;
135	union
136	{
137	struct
138	{
139	/** The actual DirectSound Buffer (DSB) used for the capturing.
140	* This is a secondary buffer and is used as a streaming buffer. */
141	LPDIRECTSOUNDCAPTUREBUFFER8 pDSCB;
142	/** Current read offset (in bytes) within the DSB. */
143	DWORD offReadPos;
144	/** Number of buffer overruns happened. Used for logging. */
145	uint8_t cOverruns;
146	} In;
147	struct
148	{
149	/** The actual DirectSound Buffer (DSB) used for playback.
150	* This is a secondary buffer and is used as a streaming buffer. */
151	LPDIRECTSOUNDBUFFER8 pDSB;
152	/** Current write offset (in bytes) within the DSB.
153	* @note This is needed as the current write position as kept by direct sound
154	* will move ahead if we're too late. */
155	DWORD offWritePos;
156	/** Offset of last play cursor within the DSB when checked for pending. */
157	DWORD offPlayCursorLastPending;
158	/** Offset of last play cursor within the DSB when last played. */
159	DWORD offPlayCursorLastPlayed;
160	/** Total amount (in bytes) written to our internal ring buffer. */
161	uint64_t cbWritten;
162	/** Total amount (in bytes) played (to the DirectSound buffer). */
163	uint64_t cbTransferred;
164	/** Flag indicating whether playback was just (re)started. */
165	bool fFirstTransfer;
166	/** Flag indicating whether this stream is in draining mode, e.g. no new
167	* data is being written to it but DirectSound still needs to be able to
168	* play its remaining (buffered) data. */
169	bool fDrain;
170	/** How much (in bytes) the last transfer from the internal buffer
171	* to the DirectSound buffer was. */
172	uint32_t cbLastTransferred;
173	/** The RTTimeMilliTS() deadline for the draining of this stream. */
174	uint64_t msDrainDeadline;
175	} Out;
176	};
177	/** Timestamp (in ms) of the last transfer from the internal buffer to/from the
178	* DirectSound buffer. */
179	uint64_t msLastTransfer;
180	/** The stream's critical section for synchronizing access. */
181	RTCRITSECT CritSect;
182	/** Used for formatting the current DSound status. */
183	char szStatus[127];
184	/** Fixed zero terminator. */
185	char const chStateZero;
186	} DSOUNDSTREAM, *PDSOUNDSTREAM;
187
188	/**
189	* DirectSound-specific device entry.
190	*/
191	typedef struct DSOUNDDEV
192	{
193	PDMAUDIOHOSTDEV Core;
194	/** The GUID if handy. */
195	GUID Guid;
196	/** The GUID as a string (empty if default). */
197	char szGuid[RTUUID_STR_LENGTH];
198	} DSOUNDDEV;
199	/** Pointer to a DirectSound device entry. */
200	typedef DSOUNDDEV *PDSOUNDDEV;
201
202	/**
203	* Structure for holding a device enumeration context.
204	*/
205	typedef struct DSOUNDENUMCBCTX
206	{
207	/** Enumeration flags. */
208	uint32_t fFlags;
209	/** Pointer to device list to populate. */
210	PPDMAUDIOHOSTENUM pDevEnm;
211	} DSOUNDENUMCBCTX, *PDSOUNDENUMCBCTX;
212
213	typedef struct DRVHOSTDSOUND
214	{
215	/** Pointer to the driver instance structure. */
216	PPDMDRVINS pDrvIns;
217	/** Our audio host audio interface. */
218	PDMIHOSTAUDIO IHostAudio;
219	/** Critical section to serialize access. */
220	RTCRITSECT CritSect;
221	/** DirectSound configuration options. */
222	DSOUNDHOSTCFG Cfg;
223	/** List of devices of last enumeration. */
224	PDMAUDIOHOSTENUM DeviceEnum;
225	/** Whether this backend supports any audio input.
226	* @todo r=bird: This is not actually used for anything. */
227	bool fEnabledIn;
228	/** Whether this backend supports any audio output.
229	* @todo r=bird: This is not actually used for anything. */
230	bool fEnabledOut;
231	/** The Direct Sound playback interface. */
232	LPDIRECTSOUND8 pDS;
233	/** The Direct Sound capturing interface. */
234	LPDIRECTSOUNDCAPTURE8 pDSC;
235	/** List of streams (DSOUNDSTREAM).
236	* Requires CritSect ownership. */
237	RTLISTANCHOR HeadStreams;
238
239	#ifdef VBOX_WITH_AUDIO_MMNOTIFICATION_CLIENT
240	DrvHostAudioDSoundMMNotifClient *m_pNotificationClient;
241	#endif
242	} DRVHOSTDSOUND, *PDRVHOSTDSOUND;
243
244
245	/*********************************************************************************************************************************
246	* Internal Functions *
247	*********************************************************************************************************************************/
248	static HRESULT directSoundPlayRestore(PDRVHOSTDSOUND pThis, LPDIRECTSOUNDBUFFER8 pDSB);
249	static int drvHostDSoundStreamStopPlayback(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, bool fReset);
250
251	static int dsoundDevicesEnumerate(PDRVHOSTDSOUND pThis, PDMAUDIOHOSTENUM pDevEnm, uint32_t fEnum);
252
253	static void dsoundUpdateStatusInternal(PDRVHOSTDSOUND pThis);
254
255
256	#if defined(LOG_ENABLED) \|\| defined(RTLOG_REL_ENABLED)
257	/**
258	* Gets the stream status as a string for logging purposes.
259	*
260	* @returns Status string (pStreamDS->szStatus).
261	* @param pStreamDS The stream to get the status for.
262	*/
263	static const char *drvHostDSoundStreamStatusString(PDSOUNDSTREAM pStreamDS)
264	{
265	/*
266	* Out internal stream status first.
267	*/
268	size_t off;
269	if (pStreamDS->fEnabled)
270	{
271	memcpy(pStreamDS->szStatus, RT_STR_TUPLE("ENABLED "));
272	off = sizeof("ENABLED ") - 1;
273	}
274	else
275	{
276	memcpy(pStreamDS->szStatus, RT_STR_TUPLE("DISABLED"));
277	off = sizeof("DISABLED") - 1;
278	}
279
280	/*
281	* Direction specific stuff, returning with a status DWORD and string mappings for it.
282	*/
283	typedef struct DRVHOSTDSOUNDSFLAGS2STR
284	{
285	const char *pszMnemonic;
286	uint32_t cchMnemonic;
287	uint32_t fFlag;
288	} DRVHOSTDSOUNDSFLAGS2STR;
289	static const DRVHOSTDSOUNDSFLAGS2STR s_aCaptureFlags[] =
290	{
291	{ RT_STR_TUPLE(" CAPTURING"), DSCBSTATUS_CAPTURING },
292	{ RT_STR_TUPLE(" LOOPING"), DSCBSTATUS_LOOPING },
293	};
294	static const DRVHOSTDSOUNDSFLAGS2STR s_aPlaybackFlags[] =
295	{
296	{ RT_STR_TUPLE(" PLAYING"), DSBSTATUS_PLAYING },
297	{ RT_STR_TUPLE(" BUFFERLOST"), DSBSTATUS_BUFFERLOST },
298	{ RT_STR_TUPLE(" LOOPING"), DSBSTATUS_LOOPING },
299	{ RT_STR_TUPLE(" LOCHARDWARE"), DSBSTATUS_LOCHARDWARE },
300	{ RT_STR_TUPLE(" LOCSOFTWARE"), DSBSTATUS_LOCSOFTWARE },
301	{ RT_STR_TUPLE(" TERMINATED"), DSBSTATUS_TERMINATED },
302	};
303	DRVHOSTDSOUNDSFLAGS2STR const *paMappings = NULL;
304	size_t cMappings = 0;
305	DWORD fStatus = 0;
306	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
307	{
308	if (pStreamDS->In.pDSCB)
309	{
310	HRESULT hrc = pStreamDS->In.pDSCB->GetStatus(&fStatus);
311	if (SUCCEEDED(hrc))
312	{
313	paMappings = s_aCaptureFlags;
314	cMappings = RT_ELEMENTS(s_aCaptureFlags);
315	}
316	else
317	RTStrPrintf(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "GetStatus->%Rhrc", hrc);
318	}
319	else
320	RTStrCopy(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "NO-DSCB");
321	}
322	else if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT)
323	{
324	if (pStreamDS->Out.fDrain)
325	{
326	memcpy(&pStreamDS->szStatus[off], RT_STR_TUPLE(" DRAINING"));
327	off += sizeof(" DRAINING") - 1;
328	}
329
330	if (pStreamDS->Out.fFirstTransfer)
331	{
332	memcpy(&pStreamDS->szStatus[off], RT_STR_TUPLE(" NOXFER"));
333	off += sizeof(" NOXFER") - 1;
334	}
335
336	if (pStreamDS->Out.pDSB)
337	{
338	HRESULT hrc = pStreamDS->Out.pDSB->GetStatus(&fStatus);
339	if (SUCCEEDED(hrc))
340	{
341	paMappings = s_aPlaybackFlags;
342	cMappings = RT_ELEMENTS(s_aPlaybackFlags);
343	}
344	else
345	RTStrPrintf(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "GetStatus->%Rhrc", hrc);
346	}
347	else
348	RTStrCopy(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "NO-DSB");
349	}
350	else
351	RTStrCopy(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "BAD-DIR");
352
353	/* Format flags. */
354	if (paMappings)
355	{
356	if (fStatus == 0)
357	RTStrCopy(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, " 0");
358	else
359	{
360	for (size_t i = 0; i < cMappings; i++)
361	if (fStatus & paMappings[i].fFlag)
362	{
363	memcpy(&pStreamDS->szStatus[off], paMappings[i].pszMnemonic, paMappings[i].cchMnemonic);
364	off += paMappings[i].cchMnemonic;
365
366	fStatus &= ~paMappings[i].fFlag;
367	if (!fStatus)
368	break;
369	}
370	if (fStatus != 0)
371	off += RTStrPrintf(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, " %#x", fStatus);
372	}
373	}
374
375	/*
376	* Finally, terminate the string. By postponing it this long, it won't be
377	* a big deal if two threads go thru here at the same time as long as the
378	* status is the same.
379	*/
380	Assert(off < sizeof(pStreamDS->szStatus));
381	pStreamDS->szStatus[off] = '\0';
382
383	return pStreamDS->szStatus;
384	}
385	#endif /* LOG_ENABLED \|\| RTLOG_REL_ENABLED */
386
387
388	static DWORD dsoundRingDistance(DWORD offEnd, DWORD offBegin, DWORD cSize)
389	{
390	AssertReturn(offEnd <= cSize, 0);
391	AssertReturn(offBegin <= cSize, 0);
392
393	return offEnd >= offBegin ? offEnd - offBegin : cSize - offBegin + offEnd;
394	}
395
396
397	static char *dsoundGUIDToUtf8StrA(LPCGUID pGUID)
398	{
399	if (pGUID)
400	{
401	LPOLESTR lpOLEStr;
402	HRESULT hr = StringFromCLSID(*pGUID, &lpOLEStr);
403	if (SUCCEEDED(hr))
404	{
405	char *pszGUID;
406	int rc = RTUtf16ToUtf8(lpOLEStr, &pszGUID);
407	CoTaskMemFree(lpOLEStr);
408
409	return RT_SUCCESS(rc) ? pszGUID : NULL;
410	}
411	}
412
413	return RTStrDup("{Default device}");
414	}
415
416
417	static HRESULT directSoundPlayRestore(PDRVHOSTDSOUND pThis, LPDIRECTSOUNDBUFFER8 pDSB)
418	{
419	RT_NOREF(pThis);
420	HRESULT hr = IDirectSoundBuffer8_Restore(pDSB);
421	if (FAILED(hr))
422	DSLOG(("DSound: Restoring playback buffer\n"));
423	else
424	DSLOGREL(("DSound: Restoring playback buffer failed with %Rhrc\n", hr));
425
426	return hr;
427	}
428
429
430	static HRESULT directSoundPlayUnlock(PDRVHOSTDSOUND pThis, LPDIRECTSOUNDBUFFER8 pDSB,
431	PVOID pv1, PVOID pv2,
432	DWORD cb1, DWORD cb2)
433	{
434	RT_NOREF(pThis);
435	HRESULT hr = IDirectSoundBuffer8_Unlock(pDSB, pv1, cb1, pv2, cb2);
436	if (FAILED(hr))
437	DSLOGREL(("DSound: Unlocking playback buffer failed with %Rhrc\n", hr));
438	return hr;
439	}
440
441
442	static HRESULT directSoundPlayLock(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS,
443	DWORD dwOffset, DWORD dwBytes,
444	PVOID ppv1, PVOID ppv2,
445	DWORD pcb1, DWORD pcb2,
446	DWORD dwFlags)
447	{
448	AssertReturn(dwBytes, VERR_INVALID_PARAMETER);
449
450	HRESULT hr = E_FAIL;
451	AssertCompile(DRV_DSOUND_RESTORE_ATTEMPTS_MAX > 0);
452	for (unsigned i = 0; i < DRV_DSOUND_RESTORE_ATTEMPTS_MAX; i++)
453	{
454	PVOID pv1, pv2;
455	DWORD cb1, cb2;
456	hr = IDirectSoundBuffer8_Lock(pStreamDS->Out.pDSB, dwOffset, dwBytes, &pv1, &cb1, &pv2, &cb2, dwFlags);
457	if (SUCCEEDED(hr))
458	{
459	if ( (!pv1 \|\| !(cb1 & pStreamDS->uAlign))
460	&& (!pv2 \|\| !(cb2 & pStreamDS->uAlign)))
461	{
462	if (ppv1)
463	*ppv1 = pv1;
464	if (ppv2)
465	*ppv2 = pv2;
466	if (pcb1)
467	*pcb1 = cb1;
468	if (pcb2)
469	*pcb2 = cb2;
470	return S_OK;
471	}
472	DSLOGREL(("DSound: Locking playback buffer returned misaligned buffer: cb1=%#RX32, cb2=%#RX32 (alignment: %#RX32)\n",
473	pcb1, pcb2, pStreamDS->uAlign));
474	directSoundPlayUnlock(pThis, pStreamDS->Out.pDSB, pv1, pv2, cb1, cb2);
475	return E_FAIL;
476	}
477
478	if (hr != DSERR_BUFFERLOST)
479	break;
480
481	LogFlowFunc(("Locking failed due to lost buffer, restoring ...\n"));
482	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
483	}
484
485	DSLOGREL(("DSound: Locking playback buffer failed with %Rhrc (dwOff=%ld, dwBytes=%ld)\n", hr, dwOffset, dwBytes));
486	return hr;
487	}
488
489
490	static HRESULT directSoundCaptureUnlock(LPDIRECTSOUNDCAPTUREBUFFER8 pDSCB,
491	PVOID pv1, PVOID pv2,
492	DWORD cb1, DWORD cb2)
493	{
494	HRESULT hr = IDirectSoundCaptureBuffer8_Unlock(pDSCB, pv1, cb1, pv2, cb2);
495	if (FAILED(hr))
496	DSLOGREL(("DSound: Unlocking capture buffer failed with %Rhrc\n", hr));
497	return hr;
498	}
499
500
501	static HRESULT directSoundCaptureLock(PDSOUNDSTREAM pStreamDS,
502	DWORD dwOffset, DWORD dwBytes,
503	PVOID ppv1, PVOID ppv2,
504	DWORD pcb1, DWORD pcb2,
505	DWORD dwFlags)
506	{
507	PVOID pv1 = NULL;
508	PVOID pv2 = NULL;
509	DWORD cb1 = 0;
510	DWORD cb2 = 0;
511
512	HRESULT hr = IDirectSoundCaptureBuffer8_Lock(pStreamDS->In.pDSCB, dwOffset, dwBytes,
513	&pv1, &cb1, &pv2, &cb2, dwFlags);
514	if (FAILED(hr))
515	{
516	DSLOGREL(("DSound: Locking capture buffer failed with %Rhrc\n", hr));
517	return hr;
518	}
519
520	if ( (pv1 && (cb1 & pStreamDS->uAlign))
521	\|\| (pv2 && (cb2 & pStreamDS->uAlign)))
522	{
523	DSLOGREL(("DSound: Locking capture buffer returned misaligned buffer: cb1=%RI32, cb2=%RI32 (alignment: %RU32)\n",
524	cb1, cb2, pStreamDS->uAlign));
525	directSoundCaptureUnlock(pStreamDS->In.pDSCB, pv1, pv2, cb1, cb2);
526	return E_FAIL;
527	}
528
529	*ppv1 = pv1;
530	*ppv2 = pv2;
531	*pcb1 = cb1;
532	*pcb2 = cb2;
533
534	return S_OK;
535	}
536
537
538	/*
539	* DirectSound playback
540	*/
541
542	/**
543	* Creates a DirectSound playback instance.
544	*
545	* @return HRESULT
546	* @param pGUID GUID of device to create the playback interface for. NULL
547	* for the default device.
548	* @param ppDS Where to return the interface to the created instance.
549	*/
550	static HRESULT drvHostDSoundCreateDSPlaybackInstance(LPCGUID pGUID, LPDIRECTSOUND8 *ppDS)
551	{
552	LogFlowFuncEnter();
553
554	LPDIRECTSOUND8 pDS = NULL;
555	HRESULT hrc = CoCreateInstance(CLSID_DirectSound8, NULL, CLSCTX_ALL, IID_IDirectSound8, (void **)&pDS);
556	if (SUCCEEDED(hrc))
557	{
558	hrc = IDirectSound8_Initialize(pDS, pGUID);
559	if (SUCCEEDED(hrc))
560	{
561	HWND hWnd = GetDesktopWindow();
562	hrc = IDirectSound8_SetCooperativeLevel(pDS, hWnd, DSSCL_PRIORITY);
563	if (SUCCEEDED(hrc))
564	{
565	*ppDS = pDS;
566	LogFlowFunc(("LEAVE S_OK\n"));
567	return S_OK;
568	}
569	LogRelMax(64, ("DSound: Setting cooperative level for (hWnd=%p) failed: %Rhrc\n", hWnd, hrc));
570	}
571	else if (hrc == DSERR_NODRIVER) /* Usually means that no playback devices are attached. */
572	LogRelMax(64, ("DSound: DirectSound playback is currently unavailable\n"));
573	else
574	LogRelMax(64, ("DSound: DirectSound playback initialization failed: %Rhrc\n", hrc));
575
576	IDirectSound8_Release(pDS);
577	}
578	else
579	LogRelMax(64, ("DSound: Creating playback instance failed: %Rhrc\n", hrc));
580
581	LogFlowFunc(("LEAVE %Rhrc\n", hrc));
582	return hrc;
583	}
584
585
586	#if 0 /* not used */
587	static HRESULT directSoundPlayGetStatus(PDRVHOSTDSOUND pThis, LPDIRECTSOUNDBUFFER8 pDSB, DWORD *pdwStatus)
588	{
589	AssertPtrReturn(pThis, E_POINTER);
590	AssertPtrReturn(pDSB, E_POINTER);
591
592	AssertPtrNull(pdwStatus);
593
594	DWORD dwStatus = 0;
595	HRESULT hr = E_FAIL;
596	for (unsigned i = 0; i < DRV_DSOUND_RESTORE_ATTEMPTS_MAX; i++)
597	{
598	hr = IDirectSoundBuffer8_GetStatus(pDSB, &dwStatus);
599	if ( hr == DSERR_BUFFERLOST
600	\|\| ( SUCCEEDED(hr)
601	&& (dwStatus & DSBSTATUS_BUFFERLOST)))
602	{
603	LogFlowFunc(("Getting status failed due to lost buffer, restoring ...\n"));
604	directSoundPlayRestore(pThis, pDSB);
605	}
606	else
607	break;
608	}
609
610	if (SUCCEEDED(hr))
611	{
612	if (pdwStatus)
613	*pdwStatus = dwStatus;
614	}
615	else
616	DSLOGREL(("DSound: Retrieving playback status failed with %Rhrc\n", hr));
617
618	return hr;
619	}
620	#endif
621
622
623	/*
624	* DirectSoundCapture
625	*/
626
627	#if 0 /* unused */
628	static LPCGUID dsoundCaptureSelectDevice(PDRVHOSTDSOUND pThis, PPDMAUDIOSTREAMCFG pCfg)
629	{
630	AssertPtrReturn(pThis, NULL);
631	AssertPtrReturn(pCfg, NULL);
632
633	int rc = VINF_SUCCESS;
634
635	LPCGUID pGUID = pThis->Cfg.pGuidCapture;
636	if (!pGUID)
637	{
638	PDSOUNDDEV pDev = NULL;
639	switch (pCfg->enmPath)
640	{
641	case PDMAUDIOPATH_IN_LINE:
642	/*
643	* At the moment we're only supporting line-in in the HDA emulation,
644	* and line-in + mic-in in the AC'97 emulation both are expected
645	* to use the host's mic-in as well.
646	*
647	* So the fall through here is intentional for now.
648	*/
649	case PDMAUDIOPATH_IN_MIC:
650	pDev = (PDSOUNDDEV)DrvAudioHlpDeviceEnumGetDefaultDevice(&pThis->DeviceEnum, PDMAUDIODIR_IN);
651	break;
652
653	default:
654	AssertFailedStmt(rc = VERR_NOT_SUPPORTED);
655	break;
656	}
657
658	if ( RT_SUCCESS(rc)
659	&& pDev)
660	{
661	DSLOG(("DSound: Guest source '%s' is using host recording device '%s'\n",
662	PDMAudioPathGetName(pCfg->enmPath), pDev->Core.szName));
663	pGUID = &pDev->Guid;
664	}
665	if (RT_FAILURE(rc))
666	{
667	LogRel(("DSound: Selecting recording device failed with %Rrc\n", rc));
668	return NULL;
669	}
670	}
671
672	/* This always has to be in the release log. */
673	char *pszGUID = dsoundGUIDToUtf8StrA(pGUID);
674	LogRel(("DSound: Guest source '%s' is using host recording device with GUID '%s'\n",
675	PDMAudioPathGetName(pCfg->enmPath), pszGUID ? pszGUID: "{?}"));
676	RTStrFree(pszGUID);
677
678	return pGUID;
679	}
680	#endif
681
682
683	/**
684	* Creates a DirectSound capture instance.
685	*
686	* @returns HRESULT
687	* @param pGUID GUID of device to create the capture interface for. NULL
688	* for default.
689	* @param ppDSC Where to return the interface to the created instance.
690	*/
691	static HRESULT drvHostDSoundCreateDSCaptureInstance(LPCGUID pGUID, LPDIRECTSOUNDCAPTURE8 *ppDSC)
692	{
693	LogFlowFuncEnter();
694
695	LPDIRECTSOUNDCAPTURE8 pDSC = NULL;
696	HRESULT hrc = CoCreateInstance(CLSID_DirectSoundCapture8, NULL, CLSCTX_ALL, IID_IDirectSoundCapture8, (void **)&pDSC);
697	if (SUCCEEDED(hrc))
698	{
699	hrc = IDirectSoundCapture_Initialize(pDSC, pGUID);
700	if (SUCCEEDED(hrc))
701	{
702	*ppDSC = pDSC;
703	LogFlowFunc(("LEAVE S_OK\n"));
704	return S_OK;
705	}
706	if (hrc == DSERR_NODRIVER) /* Usually means that no capture devices are attached. */
707	LogRelMax(64, ("DSound: Capture device currently is unavailable\n"));
708	else
709	LogRelMax(64, ("DSound: Initializing capturing device failed: %Rhrc\n", hrc));
710	IDirectSoundCapture_Release(pDSC);
711	}
712	else
713	LogRelMax(64, ("DSound: Creating capture instance failed: %Rhrc\n", hrc));
714
715	LogFlowFunc(("LEAVE %Rhrc\n", hrc));
716	return hrc;
717	}
718
719
720	/**
721	* Updates this host driver's internal status, according to the global, overall input/output
722	* state and all connected (native) audio streams.
723	*
724	* @todo r=bird: This is a 'ing waste of 'ing time! We're doing this everytime
725	* an 'ing stream is created and we doesn't 'ing use the information here
726	* for any darn thing! Given the reported slowness of enumeration and
727	* issues with the 'ing code the only appropriate response is:
728	* AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARG!!!!!!!
729	*
730	* @param pThis Host audio driver instance.
731	*/
732	static void dsoundUpdateStatusInternal(PDRVHOSTDSOUND pThis)
733	{
734	#if 0 /** @todo r=bird: This isn't doing ANYTHING useful. So, I've just disabled it. */
735	AssertPtrReturnVoid(pThis);
736	LogFlowFuncEnter();
737
738	PDMAudioHostEnumDelete(&pThis->DeviceEnum);
739	int rc = dsoundDevicesEnumerate(pThis, &pThis->DeviceEnum);
740	if (RT_SUCCESS(rc))
741	{
742	#if 0
743	if ( pThis->fEnabledOut != RT_BOOL(cbCtx.cDevOut)
744	\|\| pThis->fEnabledIn != RT_BOOL(cbCtx.cDevIn))
745	{
746	/** @todo Use a registered callback to the audio connector (e.g "OnConfigurationChanged") to
747	* let the connector know that something has changed within the host backend. */
748	}
749	#endif
750	pThis->fEnabledIn = PDMAudioHostEnumCountMatching(&pThis->DeviceEnum, PDMAUDIODIR_IN) != 0;
751	pThis->fEnabledOut = PDMAudioHostEnumCountMatching(&pThis->DeviceEnum, PDMAUDIODIR_OUT) != 0;
752	}
753
754	LogFlowFuncLeaveRC(rc);
755	#else
756	RT_NOREF(pThis);
757	#endif
758	}
759
760
761	/*********************************************************************************************************************************
762	* PDMIHOSTAUDIO *
763	*********************************************************************************************************************************/
764
765	/**
766	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig}
767	*/
768	static DECLCALLBACK(int) drvHostDSoundHA_GetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg)
769	{
770	RT_NOREF(pInterface);
771	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
772	AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER);
773
774
775	/*
776	* Fill in the config structure.
777	*/
778	RTStrCopy(pBackendCfg->szName, sizeof(pBackendCfg->szName), "DirectSound");
779	pBackendCfg->cbStream = sizeof(DSOUNDSTREAM);
780	pBackendCfg->fFlags = 0;
781	pBackendCfg->cMaxStreamsIn = UINT32_MAX;
782	pBackendCfg->cMaxStreamsOut = UINT32_MAX;
783
784	return VINF_SUCCESS;
785	}
786
787
788	/**
789	* Callback for the playback device enumeration.
790	*
791	* @return TRUE if continuing enumeration, FALSE if not.
792	* @param pGUID Pointer to GUID of enumerated device. Can be NULL.
793	* @param pwszDescription Pointer to (friendly) description of enumerated device.
794	* @param pwszModule Pointer to module name of enumerated device.
795	* @param lpContext Pointer to PDSOUNDENUMCBCTX context for storing the enumerated information.
796	*
797	* @note Carbon copy of drvHostDSoundEnumOldStyleCaptureCallback with OUT direction.
798	*/
799	static BOOL CALLBACK drvHostDSoundEnumOldStylePlaybackCallback(LPGUID pGUID, LPCWSTR pwszDescription,
800	LPCWSTR pwszModule, PVOID lpContext)
801	{
802	PDSOUNDENUMCBCTX pEnumCtx = (PDSOUNDENUMCBCTX)lpContext;
803	AssertPtrReturn(pEnumCtx, FALSE);
804
805	PPDMAUDIOHOSTENUM pDevEnm = pEnumCtx->pDevEnm;
806	AssertPtrReturn(pDevEnm, FALSE);
807
808	AssertPtrNullReturn(pGUID, FALSE); /* pGUID can be NULL for default device(s). */
809	AssertPtrReturn(pwszDescription, FALSE);
810	RT_NOREF(pwszModule); /* Do not care about pwszModule. */
811
812	int rc;
813	size_t const cbName = RTUtf16CalcUtf8Len(pwszDescription) + 1;
814	PDSOUNDDEV pDev = (PDSOUNDDEV)PDMAudioHostDevAlloc(sizeof(DSOUNDDEV), cbName, 0);
815	if (pDev)
816	{
817	pDev->Core.enmUsage = PDMAUDIODIR_OUT;
818	pDev->Core.enmType = PDMAUDIODEVICETYPE_BUILTIN;
819
820	if (pGUID == NULL)
821	pDev->Core.fFlags = PDMAUDIOHOSTDEV_F_DEFAULT_OUT;
822
823	rc = RTUtf16ToUtf8Ex(pwszDescription, RTSTR_MAX, &pDev->Core.pszName, cbName, NULL);
824	if (RT_SUCCESS(rc))
825	{
826	if (!pGUID)
827	pDev->Core.fFlags \|= PDMAUDIOHOSTDEV_F_DEFAULT_OUT;
828	else
829	{
830	memcpy(&pDev->Guid, pGUID, sizeof(pDev->Guid));
831	rc = RTUuidToStr((PCRTUUID)pGUID, pDev->szGuid, sizeof(pDev->szGuid));
832	AssertRC(rc);
833	}
834	pDev->Core.pszId = &pDev->szGuid[0];
835
836	PDMAudioHostEnumAppend(pDevEnm, &pDev->Core);
837
838	/* Note: Querying the actual device information will be done at some
839	* later point in time outside this enumeration callback to prevent
840	* DSound hangs. */
841	return TRUE;
842	}
843	PDMAudioHostDevFree(&pDev->Core);
844	}
845	else
846	rc = VERR_NO_MEMORY;
847
848	LogRel(("DSound: Error enumeration playback device '%ls': rc=%Rrc\n", pwszDescription, rc));
849	return FALSE; /* Abort enumeration. */
850	}
851
852
853	/**
854	* Callback for the capture device enumeration.
855	*
856	* @return TRUE if continuing enumeration, FALSE if not.
857	* @param pGUID Pointer to GUID of enumerated device. Can be NULL.
858	* @param pwszDescription Pointer to (friendly) description of enumerated device.
859	* @param pwszModule Pointer to module name of enumerated device.
860	* @param lpContext Pointer to PDSOUNDENUMCBCTX context for storing the enumerated information.
861	*
862	* @note Carbon copy of drvHostDSoundEnumOldStylePlaybackCallback with IN direction.
863	*/
864	static BOOL CALLBACK drvHostDSoundEnumOldStyleCaptureCallback(LPGUID pGUID, LPCWSTR pwszDescription,
865	LPCWSTR pwszModule, PVOID lpContext)
866	{
867	PDSOUNDENUMCBCTX pEnumCtx = (PDSOUNDENUMCBCTX )lpContext;
868	AssertPtrReturn(pEnumCtx, FALSE);
869
870	PPDMAUDIOHOSTENUM pDevEnm = pEnumCtx->pDevEnm;
871	AssertPtrReturn(pDevEnm, FALSE);
872
873	AssertPtrNullReturn(pGUID, FALSE); /* pGUID can be NULL for default device(s). */
874	AssertPtrReturn(pwszDescription, FALSE);
875	RT_NOREF(pwszModule); /* Do not care about pwszModule. */
876
877	int rc;
878	size_t const cbName = RTUtf16CalcUtf8Len(pwszDescription) + 1;
879	PDSOUNDDEV pDev = (PDSOUNDDEV)PDMAudioHostDevAlloc(sizeof(DSOUNDDEV), cbName, 0);
880	if (pDev)
881	{
882	pDev->Core.enmUsage = PDMAUDIODIR_IN;
883	pDev->Core.enmType = PDMAUDIODEVICETYPE_BUILTIN;
884
885	rc = RTUtf16ToUtf8Ex(pwszDescription, RTSTR_MAX, &pDev->Core.pszName, cbName, NULL);
886	if (RT_SUCCESS(rc))
887	{
888	if (!pGUID)
889	pDev->Core.fFlags \|= PDMAUDIOHOSTDEV_F_DEFAULT_IN;
890	else
891	{
892	memcpy(&pDev->Guid, pGUID, sizeof(pDev->Guid));
893	rc = RTUuidToStr((PCRTUUID)pGUID, pDev->szGuid, sizeof(pDev->szGuid));
894	AssertRC(rc);
895	}
896	pDev->Core.pszId = &pDev->szGuid[0];
897
898	PDMAudioHostEnumAppend(pDevEnm, &pDev->Core);
899
900	/* Note: Querying the actual device information will be done at some
901	* later point in time outside this enumeration callback to prevent
902	* DSound hangs. */
903	return TRUE;
904	}
905	PDMAudioHostDevFree(&pDev->Core);
906	}
907	else
908	rc = VERR_NO_MEMORY;
909
910	LogRel(("DSound: Error enumeration capture device '%ls', rc=%Rrc\n", pwszDescription, rc));
911	return FALSE; /* Abort enumeration. */
912	}
913
914
915	/**
916	* Queries information for a given (DirectSound) device.
917	*
918	* @returns VBox status code.
919	* @param pDev Audio device to query information for.
920	*/
921	static int drvHostDSoundEnumOldStyleQueryDeviceInfo(PDSOUNDDEV pDev)
922	{
923	AssertPtr(pDev);
924	int rc;
925
926	if (pDev->Core.enmUsage == PDMAUDIODIR_OUT)
927	{
928	LPDIRECTSOUND8 pDS;
929	HRESULT hr = drvHostDSoundCreateDSPlaybackInstance(&pDev->Guid, &pDS);
930	if (SUCCEEDED(hr))
931	{
932	DSCAPS DSCaps;
933	RT_ZERO(DSCaps);
934	DSCaps.dwSize = sizeof(DSCAPS);
935	hr = IDirectSound_GetCaps(pDS, &DSCaps);
936	if (SUCCEEDED(hr))
937	{
938	pDev->Core.cMaxOutputChannels = DSCaps.dwFlags & DSCAPS_PRIMARYSTEREO ? 2 : 1;
939
940	DWORD dwSpeakerCfg;
941	hr = IDirectSound_GetSpeakerConfig(pDS, &dwSpeakerCfg);
942	if (SUCCEEDED(hr))
943	{
944	unsigned uSpeakerCount = 0;
945	switch (DSSPEAKER_CONFIG(dwSpeakerCfg))
946	{
947	case DSSPEAKER_MONO: uSpeakerCount = 1; break;
948	case DSSPEAKER_HEADPHONE: uSpeakerCount = 2; break;
949	case DSSPEAKER_STEREO: uSpeakerCount = 2; break;
950	case DSSPEAKER_QUAD: uSpeakerCount = 4; break;
951	case DSSPEAKER_SURROUND: uSpeakerCount = 4; break;
952	case DSSPEAKER_5POINT1: uSpeakerCount = 6; break;
953	case DSSPEAKER_5POINT1_SURROUND: uSpeakerCount = 6; break;
954	case DSSPEAKER_7POINT1: uSpeakerCount = 8; break;
955	case DSSPEAKER_7POINT1_SURROUND: uSpeakerCount = 8; break;
956	default: break;
957	}
958
959	if (uSpeakerCount) /* Do we need to update the channel count? */
960	pDev->Core.cMaxOutputChannels = uSpeakerCount;
961
962	rc = VINF_SUCCESS;
963	}
964	else
965	{
966	LogRel(("DSound: Error retrieving playback device speaker config, hr=%Rhrc\n", hr));
967	rc = VERR_ACCESS_DENIED; /** @todo Fudge! */
968	}
969	}
970	else
971	{
972	LogRel(("DSound: Error retrieving playback device capabilities, hr=%Rhrc\n", hr));
973	rc = VERR_ACCESS_DENIED; /** @todo Fudge! */
974	}
975
976	IDirectSound8_Release(pDS);
977	}
978	else
979	rc = VERR_GENERAL_FAILURE;
980	}
981	else if (pDev->Core.enmUsage == PDMAUDIODIR_IN)
982	{
983	LPDIRECTSOUNDCAPTURE8 pDSC;
984	HRESULT hr = drvHostDSoundCreateDSCaptureInstance(&pDev->Guid, &pDSC);
985	if (SUCCEEDED(hr))
986	{
987	DSCCAPS DSCCaps;
988	RT_ZERO(DSCCaps);
989	DSCCaps.dwSize = sizeof(DSCCAPS);
990	hr = IDirectSoundCapture_GetCaps(pDSC, &DSCCaps);
991	if (SUCCEEDED(hr))
992	{
993	pDev->Core.cMaxInputChannels = DSCCaps.dwChannels;
994	rc = VINF_SUCCESS;
995	}
996	else
997	{
998	LogRel(("DSound: Error retrieving capture device capabilities, hr=%Rhrc\n", hr));
999	rc = VERR_ACCESS_DENIED; /** @todo Fudge! */
1000	}
1001
1002	IDirectSoundCapture_Release(pDSC);
1003	}
1004	else
1005	rc = VERR_GENERAL_FAILURE;
1006	}
1007	else
1008	AssertFailedStmt(rc = VERR_NOT_SUPPORTED);
1009
1010	return rc;
1011	}
1012
1013
1014	/**
1015	* Queries information for @a pDevice and adds an entry to the enumeration.
1016	*
1017	* @returns VBox status code.
1018	* @param pDevEnm The enumeration to add the device to.
1019	* @param pDevice The device.
1020	* @param enmType The type of device.
1021	* @param fDefault Whether it's the default device.
1022	*/
1023	static int drvHostDSoundEnumNewStyleAdd(PPDMAUDIOHOSTENUM pDevEnm, IMMDevice *pDevice, EDataFlow enmType, bool fDefault)
1024	{
1025	int rc = VINF_SUCCESS; /* ignore most errors */
1026
1027	/*
1028	* Gather the necessary properties.
1029	*/
1030	IPropertyStore *pProperties = NULL;
1031	HRESULT hrc = pDevice->OpenPropertyStore(STGM_READ, &pProperties);
1032	if (SUCCEEDED(hrc))
1033	{
1034	/* Get the friendly name. */
1035	PROPVARIANT VarName;
1036	PropVariantInit(&VarName);
1037	hrc = pProperties->GetValue(PKEY_Device_FriendlyName, &VarName);
1038	if (SUCCEEDED(hrc))
1039	{
1040	/* Get the DirectSound GUID. */
1041	PROPVARIANT VarGUID;
1042	PropVariantInit(&VarGUID);
1043	hrc = pProperties->GetValue(PKEY_AudioEndpoint_GUID, &VarGUID);
1044	if (SUCCEEDED(hrc))
1045	{
1046	/* Get the device format. */
1047	PROPVARIANT VarFormat;
1048	PropVariantInit(&VarFormat);
1049	hrc = pProperties->GetValue(PKEY_AudioEngine_DeviceFormat, &VarFormat);
1050	if (SUCCEEDED(hrc))
1051	{
1052	WAVEFORMATEX const * const pFormat = (WAVEFORMATEX const *)VarFormat.blob.pBlobData;
1053	AssertPtr(pFormat);
1054
1055	/*
1056	* Create a enumeration entry for it.
1057	*/
1058	size_t const cbName = RTUtf16CalcUtf8Len(VarName.pwszVal) + 1;
1059	PDSOUNDDEV pDev = (PDSOUNDDEV)PDMAudioHostDevAlloc(sizeof(DSOUNDDEV), cbName, 0);
1060	if (pDev)
1061	{
1062	pDev->Core.enmUsage = enmType == eRender ? PDMAUDIODIR_OUT : PDMAUDIODIR_IN;
1063	pDev->Core.enmType = PDMAUDIODEVICETYPE_BUILTIN;
1064	if (fDefault)
1065	pDev->Core.fFlags \|= enmType == eRender
1066	? PDMAUDIOHOSTDEV_F_DEFAULT_OUT : PDMAUDIOHOSTDEV_F_DEFAULT_IN;
1067	if (enmType == eRender)
1068	pDev->Core.cMaxOutputChannels = pFormat->nChannels;
1069	else
1070	pDev->Core.cMaxInputChannels = pFormat->nChannels;
1071
1072	//if (fDefault)
1073	rc = RTUuidFromUtf16((PRTUUID)&pDev->Guid, VarGUID.pwszVal);
1074	if (RT_SUCCESS(rc))
1075	{
1076	rc = RTUuidToStr((PCRTUUID)&pDev->Guid, pDev->szGuid, sizeof(pDev->szGuid));
1077	AssertRC(rc);
1078	pDev->Core.pszId = &pDev->szGuid[0];
1079
1080	rc = RTUtf16ToUtf8Ex(VarName.pwszVal, RTSTR_MAX, &pDev->Core.pszName, cbName, NULL);
1081	if (RT_SUCCESS(rc))
1082	PDMAudioHostEnumAppend(pDevEnm, &pDev->Core);
1083	else
1084	PDMAudioHostDevFree(&pDev->Core);
1085	}
1086	else
1087	{
1088	LogFunc(("RTUuidFromUtf16(%ls): %Rrc\n", VarGUID.pwszVal, rc));
1089	PDMAudioHostDevFree(&pDev->Core);
1090	}
1091	}
1092	else
1093	rc = VERR_NO_MEMORY;
1094	PropVariantClear(&VarFormat);
1095	}
1096	else
1097	LogFunc(("Failed to get PKEY_AudioEngine_DeviceFormat: %Rhrc\n", hrc));
1098	PropVariantClear(&VarGUID);
1099	}
1100	else
1101	LogFunc(("Failed to get PKEY_AudioEndpoint_GUID: %Rhrc\n", hrc));
1102	PropVariantClear(&VarName);
1103	}
1104	else
1105	LogFunc(("Failed to get PKEY_Device_FriendlyName: %Rhrc\n", hrc));
1106	pProperties->Release();
1107	}
1108	else
1109	LogFunc(("OpenPropertyStore failed: %Rhrc\n", hrc));
1110
1111	if (hrc == E_OUTOFMEMORY && RT_SUCCESS_NP(rc))
1112	rc = VERR_NO_MEMORY;
1113	return rc;
1114	}
1115
1116
1117	/**
1118	* Does a (Re-)enumeration of the host's playback + capturing devices.
1119	*
1120	* @return VBox status code.
1121	* @param pDevEnm Where to store the enumerated devices.
1122	*/
1123	static int drvHostDSoundEnumerateDevices(PPDMAUDIOHOSTENUM pDevEnm)
1124	{
1125	DSLOG(("DSound: Enumerating devices ...\n"));
1126
1127	/*
1128	* Use the Vista+ API.
1129	*/
1130	IMMDeviceEnumerator *pEnumerator;
1131	HRESULT hrc = CoCreateInstance(__uuidof(MMDeviceEnumerator), 0, CLSCTX_ALL,
1132	__uuidof(IMMDeviceEnumerator), (void **)&pEnumerator);
1133	if (SUCCEEDED(hrc))
1134	{
1135	int rc = VINF_SUCCESS;
1136	for (unsigned idxPass = 0; idxPass < 2 && RT_SUCCESS(rc); idxPass++)
1137	{
1138	EDataFlow const enmType = idxPass == 0 ? EDataFlow::eRender : EDataFlow::eCapture;
1139
1140	/* Get the default device first. */
1141	IMMDevice *pDefaultDevice = NULL;
1142	hrc = pEnumerator->GetDefaultAudioEndpoint(enmType, eMultimedia, &pDefaultDevice);
1143	if (SUCCEEDED(hrc))
1144	rc = drvHostDSoundEnumNewStyleAdd(pDevEnm, pDefaultDevice, enmType, true);
1145	else
1146	pDefaultDevice = NULL;
1147
1148	/* Enumerate the devices. */
1149	IMMDeviceCollection *pCollection = NULL;
1150	hrc = pEnumerator->EnumAudioEndpoints(enmType, DEVICE_STATE_ACTIVE /\| DEVICE_STATE_UNPLUGGED?/, &pCollection);
1151	if (SUCCEEDED(hrc) && pCollection != NULL)
1152	{
1153	UINT cDevices = 0;
1154	hrc = pCollection->GetCount(&cDevices);
1155	if (SUCCEEDED(hrc))
1156	{
1157	for (UINT idxDevice = 0; idxDevice < cDevices && RT_SUCCESS(rc); idxDevice++)
1158	{
1159	IMMDevice *pDevice = NULL;
1160	hrc = pCollection->Item(idxDevice, &pDevice);
1161	if (SUCCEEDED(hrc) && pDevice)
1162	{
1163	if (pDevice != pDefaultDevice)
1164	rc = drvHostDSoundEnumNewStyleAdd(pDevEnm, pDevice, enmType, false);
1165	pDevice->Release();
1166	}
1167	}
1168	}
1169	pCollection->Release();
1170	}
1171	else
1172	LogRelMax(10, ("EnumAudioEndpoints(%s) failed: %Rhrc\n", idxPass == 0 ? "output" : "input", hrc));
1173
1174	if (pDefaultDevice)
1175	pDefaultDevice->Release();
1176	}
1177	pEnumerator->Release();
1178	if (pDevEnm->cDevices > 0 \|\| RT_FAILURE(rc))
1179	{
1180	DSLOG(("DSound: Enumerating devices done - %u device (%Rrc)\n", pDevEnm->cDevices, rc));
1181	return rc;
1182	}
1183	}
1184
1185	/*
1186	* Fall back to dsound.
1187	*/
1188	/* Resolve symbols once. */
1189	static PFNDIRECTSOUNDENUMERATEW volatile s_pfnDirectSoundEnumerateW = NULL;
1190	static PFNDIRECTSOUNDCAPTUREENUMERATEW volatile s_pfnDirectSoundCaptureEnumerateW = NULL;
1191
1192	PFNDIRECTSOUNDENUMERATEW pfnDirectSoundEnumerateW = s_pfnDirectSoundEnumerateW;
1193	PFNDIRECTSOUNDCAPTUREENUMERATEW pfnDirectSoundCaptureEnumerateW = s_pfnDirectSoundCaptureEnumerateW;
1194	if (!pfnDirectSoundEnumerateW \|\| !pfnDirectSoundCaptureEnumerateW)
1195	{
1196	RTLDRMOD hModDSound = NIL_RTLDRMOD;
1197	int rc = RTLdrLoadSystem("dsound.dll", true /fNoUnload/, &hModDSound);
1198	if (RT_SUCCESS(rc))
1199	{
1200	rc = RTLdrGetSymbol(hModDSound, "DirectSoundEnumerateW", (void **)&pfnDirectSoundEnumerateW);
1201	if (RT_SUCCESS(rc))
1202	s_pfnDirectSoundEnumerateW = pfnDirectSoundEnumerateW;
1203	else
1204	LogRel(("DSound: Failed to get dsound.dll export DirectSoundEnumerateW: %Rrc\n", rc));
1205
1206	rc = RTLdrGetSymbol(hModDSound, "DirectSoundCaptureEnumerateW", (void **)&pfnDirectSoundCaptureEnumerateW);
1207	if (RT_SUCCESS(rc))
1208	s_pfnDirectSoundCaptureEnumerateW = pfnDirectSoundCaptureEnumerateW;
1209	else
1210	LogRel(("DSound: Failed to get dsound.dll export DirectSoundCaptureEnumerateW: %Rrc\n", rc));
1211	RTLdrClose(hModDSound);
1212	}
1213	else
1214	LogRel(("DSound: Unable to load dsound.dll for enumerating devices: %Rrc\n", rc));
1215	if (!pfnDirectSoundEnumerateW && !pfnDirectSoundCaptureEnumerateW)
1216	return rc;
1217	}
1218
1219	/* Common callback context for both playback and capture enumerations: */
1220	DSOUNDENUMCBCTX EnumCtx;
1221	EnumCtx.fFlags = 0;
1222	EnumCtx.pDevEnm = pDevEnm;
1223
1224	/* Enumerate playback devices. */
1225	if (pfnDirectSoundEnumerateW)
1226	{
1227	DSLOG(("DSound: Enumerating playback devices ...\n"));
1228	HRESULT hr = pfnDirectSoundEnumerateW(&drvHostDSoundEnumOldStylePlaybackCallback, &EnumCtx);
1229	if (FAILED(hr))
1230	LogRel(("DSound: Error enumerating host playback devices: %Rhrc\n", hr));
1231	}
1232
1233	/* Enumerate capture devices. */
1234	if (pfnDirectSoundCaptureEnumerateW)
1235	{
1236	DSLOG(("DSound: Enumerating capture devices ...\n"));
1237	HRESULT hr = pfnDirectSoundCaptureEnumerateW(&drvHostDSoundEnumOldStyleCaptureCallback, &EnumCtx);
1238	if (FAILED(hr))
1239	LogRel(("DSound: Error enumerating host capture devices: %Rhrc\n", hr));
1240	}
1241
1242	/*
1243	* Query Information for all enumerated devices.
1244	* Note! This is problematic to do from the enumeration callbacks.
1245	*/
1246	PDSOUNDDEV pDev;
1247	RTListForEach(&pDevEnm->LstDevices, pDev, DSOUNDDEV, Core.ListEntry)
1248	{
1249	drvHostDSoundEnumOldStyleQueryDeviceInfo(pDev); /* ignore rc */
1250	}
1251
1252	DSLOG(("DSound: Enumerating devices done\n"));
1253
1254	return VINF_SUCCESS;
1255	}
1256
1257
1258	/**
1259	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetDevices}
1260	*/
1261	static DECLCALLBACK(int) drvHostDSoundHA_GetDevices(PPDMIHOSTAUDIO pInterface, PPDMAUDIOHOSTENUM pDeviceEnum)
1262	{
1263	RT_NOREF(pInterface);
1264	AssertPtrReturn(pDeviceEnum, VERR_INVALID_POINTER);
1265
1266	PDMAudioHostEnumInit(pDeviceEnum);
1267	int rc = drvHostDSoundEnumerateDevices(pDeviceEnum);
1268	if (RT_FAILURE(rc))
1269	PDMAudioHostEnumDelete(pDeviceEnum);
1270
1271	LogFlowFunc(("Returning %Rrc\n", rc));
1272	return rc;
1273	}
1274
1275
1276	/**
1277	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus}
1278	*/
1279	static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvHostDSoundHA_GetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir)
1280	{
1281	RT_NOREF(pInterface, enmDir);
1282	return PDMAUDIOBACKENDSTS_RUNNING;
1283	}
1284
1285
1286	/**
1287	* Converts from PDM stream config to windows WAVEFORMATEXTENSIBLE struct.
1288	*
1289	* @param pCfg The PDM audio stream config to convert from.
1290	* @param pFmt The windows structure to initialize.
1291	*/
1292	static void dsoundWaveFmtFromCfg(PCPDMAUDIOSTREAMCFG pCfg, PWAVEFORMATEXTENSIBLE pFmt)
1293	{
1294	RT_ZERO(*pFmt);
1295	pFmt->Format.wFormatTag = WAVE_FORMAT_PCM;
1296	pFmt->Format.nChannels = PDMAudioPropsChannels(&pCfg->Props);
1297	pFmt->Format.wBitsPerSample = PDMAudioPropsSampleBits(&pCfg->Props);
1298	pFmt->Format.nSamplesPerSec = PDMAudioPropsHz(&pCfg->Props);
1299	pFmt->Format.nBlockAlign = PDMAudioPropsFrameSize(&pCfg->Props);
1300	pFmt->Format.nAvgBytesPerSec = PDMAudioPropsFramesToBytes(&pCfg->Props, PDMAudioPropsHz(&pCfg->Props));
1301	pFmt->Format.cbSize = 0; /* No extra data specified. */
1302
1303	/*
1304	* We need to use the extensible structure if there are more than two channels
1305	* or if the channels have non-standard assignments.
1306	*/
1307	if ( pFmt->Format.nChannels > 2
1308	\|\| ( pFmt->Format.nChannels == 1
1309	? pCfg->Props.aidChannels[0] != PDMAUDIOCHANNELID_MONO
1310	: pCfg->Props.aidChannels[0] != PDMAUDIOCHANNELID_FRONT_LEFT
1311	\|\| pCfg->Props.aidChannels[1] != PDMAUDIOCHANNELID_FRONT_RIGHT))
1312	{
1313	pFmt->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
1314	pFmt->Format.cbSize = sizeof(*pFmt) - sizeof(pFmt->Format);
1315	pFmt->Samples.wValidBitsPerSample = PDMAudioPropsSampleBits(&pCfg->Props);
1316	pFmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1317	pFmt->dwChannelMask = 0;
1318	unsigned const cSrcChannels = pFmt->Format.nChannels;
1319	for (unsigned i = 0; i < cSrcChannels; i++)
1320	if ( pCfg->Props.aidChannels[i] >= PDMAUDIOCHANNELID_FIRST_STANDARD
1321	&& pCfg->Props.aidChannels[i] < PDMAUDIOCHANNELID_END_STANDARD)
1322	pFmt->dwChannelMask \|= RT_BIT_32(pCfg->Props.aidChannels[i] - PDMAUDIOCHANNELID_FIRST_STANDARD);
1323	else
1324	pFmt->Format.nChannels -= 1;
1325	}
1326	}
1327
1328
1329	/**
1330	* Resets the state of a DirectSound stream, clearing the buffer content.
1331	*
1332	* @param pThis Host audio driver instance.
1333	* @param pStreamDS Stream to reset state for.
1334	*/
1335	static void drvHostDSoundStreamReset(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS)
1336	{
1337	RT_NOREF(pThis);
1338	LogFunc(("Resetting %s\n", pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN ? "capture" : "playback"));
1339
1340	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
1341	{
1342	/*
1343	* Input streams.
1344	*/
1345	LogFunc(("Resetting capture stream '%s'\n", pStreamDS->Cfg.szName));
1346
1347	/* Reset the state: */
1348	pStreamDS->msLastTransfer = 0;
1349	/** @todo r=bird: We set the read position to zero here, but shouldn't we query it
1350	* from the buffer instead given that there isn't any interface for repositioning
1351	* to the start of the buffer as with playback buffers? */
1352	pStreamDS->In.offReadPos = 0;
1353	pStreamDS->In.cOverruns = 0;
1354
1355	/* Clear the buffer content: */
1356	AssertPtr(pStreamDS->In.pDSCB);
1357	if (pStreamDS->In.pDSCB)
1358	{
1359	PVOID pv1 = NULL;
1360	DWORD cb1 = 0;
1361	PVOID pv2 = NULL;
1362	DWORD cb2 = 0;
1363	HRESULT hrc = IDirectSoundCaptureBuffer8_Lock(pStreamDS->In.pDSCB, 0, pStreamDS->cbBufSize,
1364	&pv1, &cb1, &pv2, &cb2, 0 /fFlags/);
1365	if (SUCCEEDED(hrc))
1366	{
1367	PDMAudioPropsClearBuffer(&pStreamDS->Cfg.Props, pv1, cb1, PDMAUDIOPCMPROPS_B2F(&pStreamDS->Cfg.Props, cb1));
1368	if (pv2 && cb2)
1369	PDMAudioPropsClearBuffer(&pStreamDS->Cfg.Props, pv2, cb2, PDMAUDIOPCMPROPS_B2F(&pStreamDS->Cfg.Props, cb2));
1370	hrc = IDirectSoundCaptureBuffer8_Unlock(pStreamDS->In.pDSCB, pv1, cb1, pv2, cb2);
1371	if (FAILED(hrc))
1372	LogRelMaxFunc(64, ("DSound: Unlocking capture buffer '%s' after reset failed: %Rhrc\n",
1373	pStreamDS->Cfg.szName, hrc));
1374	}
1375	else
1376	LogRelMaxFunc(64, ("DSound: Locking capture buffer '%s' for reset failed: %Rhrc\n",
1377	pStreamDS->Cfg.szName, hrc));
1378	}
1379	}
1380	else
1381	{
1382	/*
1383	* Output streams.
1384	*/
1385	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
1386	LogFunc(("Resetting playback stream '%s'\n", pStreamDS->Cfg.szName));
1387
1388	/* If draining was enagaged, make sure dsound has stopped playing: */
1389	if (pStreamDS->Out.fDrain && pStreamDS->Out.pDSB)
1390	pStreamDS->Out.pDSB->Stop();
1391
1392	/* Reset the internal state: */
1393	pStreamDS->msLastTransfer = 0;
1394	pStreamDS->Out.fFirstTransfer = true;
1395	pStreamDS->Out.fDrain = false;
1396	pStreamDS->Out.cbLastTransferred = 0;
1397	pStreamDS->Out.cbTransferred = 0;
1398	pStreamDS->Out.cbWritten = 0;
1399	pStreamDS->Out.offWritePos = 0;
1400	pStreamDS->Out.offPlayCursorLastPending = 0;
1401	pStreamDS->Out.offPlayCursorLastPlayed = 0;
1402
1403	/* Reset the buffer content and repositioning the buffer to the start of the buffer. */
1404	AssertPtr(pStreamDS->Out.pDSB);
1405	if (pStreamDS->Out.pDSB)
1406	{
1407	HRESULT hrc = IDirectSoundBuffer8_SetCurrentPosition(pStreamDS->Out.pDSB, 0);
1408	if (FAILED(hrc))
1409	LogRelMaxFunc(64, ("DSound: Failed to set buffer position for '%s': %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1410
1411	PVOID pv1 = NULL;
1412	DWORD cb1 = 0;
1413	PVOID pv2 = NULL;
1414	DWORD cb2 = 0;
1415	hrc = IDirectSoundBuffer8_Lock(pStreamDS->Out.pDSB, 0, pStreamDS->cbBufSize, &pv1, &cb1, &pv2, &cb2, 0 /fFlags/);
1416	if (hrc == DSERR_BUFFERLOST)
1417	{
1418	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
1419	hrc = IDirectSoundBuffer8_Lock(pStreamDS->Out.pDSB, 0, pStreamDS->cbBufSize, &pv1, &cb1, &pv2, &cb2, 0 /fFlags/);
1420	}
1421	if (SUCCEEDED(hrc))
1422	{
1423	PDMAudioPropsClearBuffer(&pStreamDS->Cfg.Props, pv1, cb1, PDMAUDIOPCMPROPS_B2F(&pStreamDS->Cfg.Props, cb1));
1424	if (pv2 && cb2)
1425	PDMAudioPropsClearBuffer(&pStreamDS->Cfg.Props, pv2, cb2, PDMAUDIOPCMPROPS_B2F(&pStreamDS->Cfg.Props, cb2));
1426
1427	hrc = IDirectSoundBuffer8_Unlock(pStreamDS->Out.pDSB, pv1, cb1, pv2, cb2);
1428	if (FAILED(hrc))
1429	LogRelMaxFunc(64, ("DSound: Unlocking playback buffer '%s' after reset failed: %Rhrc\n",
1430	pStreamDS->Cfg.szName, hrc));
1431	}
1432	else
1433	LogRelMaxFunc(64, ("DSound: Locking playback buffer '%s' for reset failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1434	}
1435	}
1436	}
1437
1438
1439	/**
1440	* Worker for drvHostDSoundHA_StreamCreate that creates caputre stream.
1441	*
1442	* @returns Windows COM status code.
1443	* @param pThis The DSound instance data.
1444	* @param pStreamDS The stream instance data.
1445	* @param pCfgReq The requested stream config (input).
1446	* @param pCfgAcq Where to return the actual stream config. This is a
1447	* copy of @a *pCfgReq when called.
1448	* @param pWaveFmtExt On input the requested stream format. Updated to the
1449	* actual stream format on successful return.
1450	*/
1451	static HRESULT drvHostDSoundStreamCreateCapture(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, PCPDMAUDIOSTREAMCFG pCfgReq,
1452	PPDMAUDIOSTREAMCFG pCfgAcq, WAVEFORMATEXTENSIBLE *pWaveFmtExt)
1453	{
1454	Assert(pStreamDS->In.pDSCB == NULL);
1455	HRESULT hrc;
1456
1457	/*
1458	* Create, initialize and set up a IDirectSoundCapture instance the first time
1459	* we go thru here.
1460	*/
1461	/** @todo bird: Or should we rather just throw this away after we've gotten the
1462	* capture buffer? Old code would just leak it... */
1463	if (pThis->pDSC == NULL)
1464	{
1465	hrc = drvHostDSoundCreateDSCaptureInstance(pThis->Cfg.pGuidCapture, &pThis->pDSC);
1466	if (FAILED(hrc))
1467	return hrc; /* The worker has complained to the release log already. */
1468	}
1469
1470	/*
1471	* Create the capture buffer.
1472	*/
1473	DSCBUFFERDESC BufferDesc =
1474	{
1475	/.dwSize = / sizeof(BufferDesc),
1476	/.dwFlags = / 0,
1477	/.dwBufferBytes =/ PDMAudioPropsFramesToBytes(&pCfgReq->Props, pCfgReq->Backend.cFramesBufferSize),
1478	/.dwReserved = / 0,
1479	/.lpwfxFormat = / &pWaveFmtExt->Format,
1480	/.dwFXCount = / 0,
1481	/.lpDSCFXDesc = / NULL
1482	};
1483
1484	LogRel2(("DSound: Requested capture buffer is %#x B / %u B / %RU64 ms\n", BufferDesc.dwBufferBytes, BufferDesc.dwBufferBytes,
1485	PDMAudioPropsBytesToMilli(&pCfgReq->Props, BufferDesc.dwBufferBytes)));
1486
1487	LPDIRECTSOUNDCAPTUREBUFFER pLegacyDSCB = NULL;
1488	hrc = IDirectSoundCapture_CreateCaptureBuffer(pThis->pDSC, &BufferDesc, &pLegacyDSCB, NULL);
1489	if (FAILED(hrc))
1490	{
1491	LogRelMax(64, ("DSound: Creating capture buffer for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1492	return hrc;
1493	}
1494
1495	/* Get the IDirectSoundCaptureBuffer8 version of the interface. */
1496	hrc = IDirectSoundCaptureBuffer_QueryInterface(pLegacyDSCB, IID_IDirectSoundCaptureBuffer8, (void **)&pStreamDS->In.pDSCB);
1497	IDirectSoundCaptureBuffer_Release(pLegacyDSCB);
1498	if (FAILED(hrc))
1499	{
1500	LogRelMax(64, ("DSound: Querying IID_IDirectSoundCaptureBuffer8 for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1501	return hrc;
1502	}
1503
1504	/*
1505	* Query the actual stream configuration.
1506	*/
1507	#if 0 /** @todo r=bird: WTF was this for? */
1508	DWORD offByteReadPos = 0;
1509	hrc = IDirectSoundCaptureBuffer8_GetCurrentPosition(pStreamDS->In.pDSCB, NULL, &offByteReadPos);
1510	if (FAILED(hrc))
1511	{
1512	offByteReadPos = 0;
1513	DSLOGREL(("DSound: Getting capture position failed with %Rhrc\n", hr));
1514	}
1515	#endif
1516	RT_ZERO(*pWaveFmtExt);
1517	hrc = IDirectSoundCaptureBuffer8_GetFormat(pStreamDS->In.pDSCB, &pWaveFmtExt->Format, sizeof(*pWaveFmtExt), NULL);
1518	if (SUCCEEDED(hrc))
1519	{
1520	/** @todo r=bird: We aren't converting/checking the pWaveFmtX content... */
1521
1522	DSCBCAPS BufferCaps = { /.dwSize = / sizeof(BufferCaps), 0, 0, 0 };
1523	hrc = IDirectSoundCaptureBuffer8_GetCaps(pStreamDS->In.pDSCB, &BufferCaps);
1524	if (SUCCEEDED(hrc))
1525	{
1526	LogRel2(("DSound: Acquired capture buffer capabilities for '%s':\n"
1527	"DSound: dwFlags = %#RX32\n"
1528	"DSound: dwBufferBytes = %#RX32 B / %RU32 B / %RU64 ms\n"
1529	"DSound: dwReserved = %#RX32\n",
1530	pCfgReq->szName, BufferCaps.dwFlags, BufferCaps.dwBufferBytes, BufferCaps.dwBufferBytes,
1531	PDMAudioPropsBytesToMilli(&pCfgReq->Props, BufferCaps.dwBufferBytes), BufferCaps.dwReserved ));
1532
1533	/* Update buffer related stuff: */
1534	pStreamDS->In.offReadPos = 0; /** @todo shouldn't we use offBytReadPos here to "read at the initial capture position"? */
1535	pStreamDS->cbBufSize = BufferCaps.dwBufferBytes;
1536	pCfgAcq->Backend.cFramesBufferSize = PDMAudioPropsBytesToFrames(&pCfgAcq->Props, BufferCaps.dwBufferBytes);
1537
1538	#if 0 /** @todo r=bird: uAlign isn't set anywhere, so this hasn't been checking anything for a while... */
1539	if (bc.dwBufferBytes & pStreamDS->uAlign)
1540	DSLOGREL(("DSound: Capture GetCaps returned misaligned buffer: size %RU32, alignment %RU32\n",
1541	bc.dwBufferBytes, pStreamDS->uAlign + 1));
1542	#endif
1543	LogFlow(("returns S_OK\n"));
1544	return S_OK;
1545	}
1546	LogRelMax(64, ("DSound: Getting capture buffer capabilities for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1547	}
1548	else
1549	LogRelMax(64, ("DSound: Getting capture format for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1550
1551	IDirectSoundCaptureBuffer8_Release(pStreamDS->In.pDSCB);
1552	pStreamDS->In.pDSCB = NULL;
1553	LogFlowFunc(("returns %Rhrc\n", hrc));
1554	return hrc;
1555	}
1556
1557
1558	/**
1559	* Worker for drvHostDSoundHA_StreamCreate that creates playback stream.
1560	*
1561	* @returns Windows COM status code.
1562	* @param pThis The DSound instance data.
1563	* @param pStreamDS The stream instance data.
1564	* @param pCfgReq The requested stream config (input).
1565	* @param pCfgAcq Where to return the actual stream config. This is a
1566	* copy of @a *pCfgReq when called.
1567	* @param pWaveFmtExt On input the requested stream format.
1568	* Updated to the actual stream format on successful
1569	* return.
1570	*/
1571	static HRESULT drvHostDSoundStreamCreatePlayback(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, PCPDMAUDIOSTREAMCFG pCfgReq,
1572	PPDMAUDIOSTREAMCFG pCfgAcq, WAVEFORMATEXTENSIBLE *pWaveFmtExt)
1573	{
1574	Assert(pStreamDS->Out.pDSB == NULL);
1575	HRESULT hrc;
1576
1577	/*
1578	* Create, initialize and set up a DirectSound8 instance the first time
1579	* we go thru here.
1580	*/
1581	/** @todo bird: Or should we rather just throw this away after we've gotten the
1582	* sound buffer? Old code would just leak it... */
1583	if (pThis->pDS == NULL)
1584	{
1585	hrc = drvHostDSoundCreateDSPlaybackInstance(pThis->Cfg.pGuidPlay, &pThis->pDS);
1586	if (FAILED(hrc))
1587	return hrc; /* The worker has complained to the release log already. */
1588	}
1589
1590	/*
1591	* As we reuse our (secondary) buffer for playing out data as it comes in,
1592	* we're using this buffer as a so-called streaming buffer.
1593	*
1594	* See https://msdn.microsoft.com/en-us/library/windows/desktop/ee419014(v=vs.85).aspx
1595	*
1596	* However, as we do not want to use memory on the sound device directly
1597	* (as most modern audio hardware on the host doesn't have this anyway),
1598	* we're not going to use DSBCAPS_STATIC for that.
1599	*
1600	* Instead we're specifying DSBCAPS_LOCSOFTWARE, as this fits the bill
1601	* of copying own buffer data to our secondary's Direct Sound buffer.
1602	*/
1603	DSBUFFERDESC BufferDesc =
1604	{
1605	/.dwSize = / sizeof(BufferDesc),
1606	/.dwFlags = / DSBCAPS_GLOBALFOCUS \| DSBCAPS_GETCURRENTPOSITION2 \| DSBCAPS_LOCSOFTWARE,
1607	/.dwBufferBytes = / PDMAudioPropsFramesToBytes(&pCfgReq->Props, pCfgReq->Backend.cFramesBufferSize),
1608	/.dwReserved = / 0,
1609	/.lpwfxFormat = / &pWaveFmtExt->Format,
1610	/.guid3DAlgorithm = {0, 0, 0, {0,0,0,0, 0,0,0,0}} /
1611	};
1612	LogRel2(("DSound: Requested playback buffer is %#x B / %u B / %RU64 ms\n", BufferDesc.dwBufferBytes, BufferDesc.dwBufferBytes,
1613	PDMAudioPropsBytesToMilli(&pCfgReq->Props, BufferDesc.dwBufferBytes)));
1614
1615	LPDIRECTSOUNDBUFFER pLegacyDSB = NULL;
1616	hrc = IDirectSound8_CreateSoundBuffer(pThis->pDS, &BufferDesc, &pLegacyDSB, NULL);
1617	if (FAILED(hrc))
1618	{
1619	LogRelMax(64, ("DSound: Creating playback sound buffer for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1620	return hrc;
1621	}
1622
1623	/* Get the IDirectSoundBuffer8 version of the interface. */
1624	hrc = IDirectSoundBuffer_QueryInterface(pLegacyDSB, IID_IDirectSoundBuffer8, (PVOID *)&pStreamDS->Out.pDSB);
1625	IDirectSoundBuffer_Release(pLegacyDSB);
1626	if (FAILED(hrc))
1627	{
1628	LogRelMax(64, ("DSound: Querying IID_IDirectSoundBuffer8 for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1629	return hrc;
1630	}
1631
1632	/*
1633	* Query the actual stream parameters, they may differ from what we requested.
1634	*/
1635	RT_ZERO(*pWaveFmtExt);
1636	hrc = IDirectSoundBuffer8_GetFormat(pStreamDS->Out.pDSB, &pWaveFmtExt->Format, sizeof(*pWaveFmtExt), NULL);
1637	if (SUCCEEDED(hrc))
1638	{
1639	/** @todo r=bird: We aren't converting/checking the pWaveFmtX content... */
1640
1641	DSBCAPS BufferCaps = { /.dwSize = / sizeof(BufferCaps), 0, 0, 0, 0 };
1642	hrc = IDirectSoundBuffer8_GetCaps(pStreamDS->Out.pDSB, &BufferCaps);
1643	if (SUCCEEDED(hrc))
1644	{
1645	LogRel2(("DSound: Acquired playback buffer capabilities for '%s':\n"
1646	"DSound: dwFlags = %#RX32\n"
1647	"DSound: dwBufferBytes = %#RX32 B / %RU32 B / %RU64 ms\n"
1648	"DSound: dwUnlockTransferRate = %RU32 KB/s\n"
1649	"DSound: dwPlayCpuOverhead = %RU32%%\n",
1650	pCfgReq->szName, BufferCaps.dwFlags, BufferCaps.dwBufferBytes, BufferCaps.dwBufferBytes,
1651	PDMAudioPropsBytesToMilli(&pCfgReq->Props, BufferCaps.dwBufferBytes),
1652	BufferCaps.dwUnlockTransferRate, BufferCaps.dwPlayCpuOverhead));
1653
1654	/* Update buffer related stuff: */
1655	pStreamDS->cbBufSize = BufferCaps.dwBufferBytes;
1656	pCfgAcq->Backend.cFramesBufferSize = PDMAudioPropsBytesToFrames(&pCfgAcq->Props, BufferCaps.dwBufferBytes);
1657	pCfgAcq->Backend.cFramesPeriod = pCfgAcq->Backend.cFramesBufferSize / 4; /* total fiction */
1658	pCfgAcq->Backend.cFramesPreBuffering = pCfgReq->Backend.cFramesPreBuffering * pCfgAcq->Backend.cFramesBufferSize
1659	/ RT_MAX(pCfgReq->Backend.cFramesBufferSize, 1);
1660
1661	#if 0 /** @todo r=bird: uAlign isn't set anywhere, so this hasn't been checking anything for a while... */
1662	if (bc.dwBufferBytes & pStreamDS->uAlign)
1663	DSLOGREL(("DSound: Playback capabilities returned misaligned buffer: size %RU32, alignment %RU32\n",
1664	bc.dwBufferBytes, pStreamDS->uAlign + 1));
1665	#endif
1666	LogFlow(("returns S_OK\n"));
1667	return S_OK;
1668	}
1669	LogRelMax(64, ("DSound: Getting playback buffer capabilities for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1670	}
1671	else
1672	LogRelMax(64, ("DSound: Getting playback format for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1673
1674	IDirectSoundBuffer8_Release(pStreamDS->Out.pDSB);
1675	pStreamDS->Out.pDSB = NULL;
1676	LogFlowFunc(("returns %Rhrc\n", hrc));
1677	return hrc;
1678	}
1679
1680
1681	/**
1682	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate}
1683	*/
1684	static DECLCALLBACK(int) drvHostDSoundHA_StreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
1685	PCPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
1686	{
1687	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1688	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1689	AssertPtrReturn(pStreamDS, VERR_INVALID_POINTER);
1690	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
1691	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
1692	AssertReturn(pCfgReq->enmDir == PDMAUDIODIR_IN \|\| pCfgReq->enmDir == PDMAUDIODIR_OUT, VERR_INVALID_PARAMETER);
1693	Assert(PDMAudioStrmCfgEquals(pCfgReq, pCfgAcq));
1694
1695	const char * const pszStreamType = pCfgReq->enmDir == PDMAUDIODIR_IN ? "capture" : "playback"; RT_NOREF(pszStreamType);
1696	LogFlowFunc(("enmPath=%s '%s'\n", PDMAudioPathGetName(pCfgReq->enmPath), pCfgReq->szName));
1697	RTListInit(&pStreamDS->ListEntry); /* paranoia */
1698
1699	/* For whatever reason: */
1700	dsoundUpdateStatusInternal(pThis);
1701
1702	/*
1703	* DSound has different COM interfaces for working with input and output
1704	* streams, so we'll quickly part ways here after some common format
1705	* specification setup and logging.
1706	*/
1707	#if defined(RTLOG_REL_ENABLED) \|\| defined(LOG_ENABLED)
1708	char szTmp[64];
1709	#endif
1710	LogRel2(("DSound: Opening %s stream '%s' (%s)\n", pCfgReq->szName, pszStreamType,
1711	PDMAudioPropsToString(&pCfgReq->Props, szTmp, sizeof(szTmp))));
1712
1713	WAVEFORMATEXTENSIBLE WaveFmtExt;
1714	dsoundWaveFmtFromCfg(pCfgReq, &WaveFmtExt);
1715	LogRel2(("DSound: Requested %s format for '%s':\n"
1716	"DSound: wFormatTag = %RU16\n"
1717	"DSound: nChannels = %RU16\n"
1718	"DSound: nSamplesPerSec = %RU32\n"
1719	"DSound: nAvgBytesPerSec = %RU32\n"
1720	"DSound: nBlockAlign = %RU16\n"
1721	"DSound: wBitsPerSample = %RU16\n"
1722	"DSound: cbSize = %RU16\n",
1723	pszStreamType, pCfgReq->szName, WaveFmtExt.Format.wFormatTag, WaveFmtExt.Format.nChannels,
1724	WaveFmtExt.Format.nSamplesPerSec, WaveFmtExt.Format.nAvgBytesPerSec, WaveFmtExt.Format.nBlockAlign,
1725	WaveFmtExt.Format.wBitsPerSample, WaveFmtExt.Format.cbSize));
1726	if (WaveFmtExt.Format.cbSize != 0)
1727	LogRel2(("DSound: dwChannelMask = %#RX32\n"
1728	"DSound: wValidBitsPerSample = %RU16\n",
1729	WaveFmtExt.dwChannelMask, WaveFmtExt.Samples.wValidBitsPerSample));
1730
1731	HRESULT hrc;
1732	if (pCfgReq->enmDir == PDMAUDIODIR_IN)
1733	hrc = drvHostDSoundStreamCreateCapture(pThis, pStreamDS, pCfgReq, pCfgAcq, &WaveFmtExt);
1734	else
1735	hrc = drvHostDSoundStreamCreatePlayback(pThis, pStreamDS, pCfgReq, pCfgAcq, &WaveFmtExt);
1736	int rc;
1737	if (SUCCEEDED(hrc))
1738	{
1739	LogRel2(("DSound: Acquired %s format for '%s':\n"
1740	"DSound: wFormatTag = %RU16\n"
1741	"DSound: nChannels = %RU16\n"
1742	"DSound: nSamplesPerSec = %RU32\n"
1743	"DSound: nAvgBytesPerSec = %RU32\n"
1744	"DSound: nBlockAlign = %RU16\n"
1745	"DSound: wBitsPerSample = %RU16\n"
1746	"DSound: cbSize = %RU16\n",
1747	pszStreamType, pCfgReq->szName, WaveFmtExt.Format.wFormatTag, WaveFmtExt.Format.nChannels,
1748	WaveFmtExt.Format.nSamplesPerSec, WaveFmtExt.Format.nAvgBytesPerSec, WaveFmtExt.Format.nBlockAlign,
1749	WaveFmtExt.Format.wBitsPerSample, WaveFmtExt.Format.cbSize));
1750	if (WaveFmtExt.Format.cbSize != 0)
1751	{
1752	LogRel2(("DSound: dwChannelMask = %#RX32\n"
1753	"DSound: wValidBitsPerSample = %RU16\n",
1754	WaveFmtExt.dwChannelMask, WaveFmtExt.Samples.wValidBitsPerSample));
1755
1756	/* Update the channel count and map here. */
1757	PDMAudioPropsSetChannels(&pCfgAcq->Props, WaveFmtExt.Format.nChannels);
1758	uint8_t idCh = 0;
1759	for (unsigned iBit = 0; iBit < 32 && idCh < WaveFmtExt.Format.nChannels; iBit++)
1760	if (WaveFmtExt.dwChannelMask & RT_BIT_32(iBit))
1761	{
1762	pCfgAcq->Props.aidChannels[idCh] = (unsigned)PDMAUDIOCHANNELID_FIRST_STANDARD + iBit;
1763	idCh++;
1764	}
1765	Assert(idCh == WaveFmtExt.Format.nChannels);
1766	}
1767
1768	/*
1769	* Copy the acquired config and reset the stream (clears the buffer).
1770	*/
1771	PDMAudioStrmCfgCopy(&pStreamDS->Cfg, pCfgAcq);
1772	drvHostDSoundStreamReset(pThis, pStreamDS);
1773
1774	RTCritSectEnter(&pThis->CritSect);
1775	RTListAppend(&pThis->HeadStreams, &pStreamDS->ListEntry);
1776	RTCritSectLeave(&pThis->CritSect);
1777
1778	rc = VINF_SUCCESS;
1779	}
1780	else
1781	rc = VERR_AUDIO_STREAM_COULD_NOT_CREATE;
1782
1783	LogFlowFunc(("returns %Rrc\n", rc));
1784	return rc;
1785	}
1786
1787
1788	/**
1789	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy}
1790	*/
1791	static DECLCALLBACK(int) drvHostDSoundHA_StreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
1792	bool fImmediate)
1793	{
1794	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1795	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1796	AssertPtrReturn(pStreamDS, VERR_INVALID_POINTER);
1797	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
1798	RT_NOREF(fImmediate);
1799
1800	RTCritSectEnter(&pThis->CritSect);
1801	RTListNodeRemove(&pStreamDS->ListEntry);
1802	RTCritSectLeave(&pThis->CritSect);
1803
1804	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
1805	{
1806	/*
1807	* Input.
1808	*/
1809	if (pStreamDS->In.pDSCB)
1810	{
1811	HRESULT hrc = IDirectSoundCaptureBuffer_Stop(pStreamDS->In.pDSCB);
1812	if (FAILED(hrc))
1813	LogFunc(("IDirectSoundCaptureBuffer_Stop failed: %Rhrc\n", hrc));
1814
1815	drvHostDSoundStreamReset(pThis, pStreamDS);
1816
1817	IDirectSoundCaptureBuffer8_Release(pStreamDS->In.pDSCB);
1818	pStreamDS->In.pDSCB = NULL;
1819	}
1820	}
1821	else
1822	{
1823	/*
1824	* Output.
1825	*/
1826	if (pStreamDS->Out.pDSB)
1827	{
1828	drvHostDSoundStreamStopPlayback(pThis, pStreamDS, true /fReset/);
1829
1830	IDirectSoundBuffer8_Release(pStreamDS->Out.pDSB);
1831	pStreamDS->Out.pDSB = NULL;
1832	}
1833	}
1834
1835	if (RTCritSectIsInitialized(&pStreamDS->CritSect))
1836	RTCritSectDelete(&pStreamDS->CritSect);
1837
1838	return VINF_SUCCESS;
1839	}
1840
1841
1842	/**
1843	* Worker for drvHostDSoundHA_StreamEnable and drvHostDSoundHA_StreamResume.
1844	*
1845	* This will try re-open the capture device if we're having trouble starting it.
1846	*
1847	* @returns VBox status code.
1848	* @param pThis The DSound host audio driver instance data.
1849	* @param pStreamDS The stream instance data.
1850	*/
1851	static int drvHostDSoundStreamCaptureStart(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS)
1852	{
1853	/*
1854	* Check the stream status first.
1855	*/
1856	int rc = VERR_AUDIO_STREAM_NOT_READY;
1857	if (pStreamDS->In.pDSCB)
1858	{
1859	DWORD fStatus = 0;
1860	HRESULT hrc = IDirectSoundCaptureBuffer8_GetStatus(pStreamDS->In.pDSCB, &fStatus);
1861	if (SUCCEEDED(hrc))
1862	{
1863	/*
1864	* Try start capturing if it's not already doing so.
1865	*/
1866	if (!(fStatus & DSCBSTATUS_CAPTURING))
1867	{
1868	LogRel2(("DSound: Starting capture on '%s' ... \n", pStreamDS->Cfg.szName));
1869	hrc = IDirectSoundCaptureBuffer8_Start(pStreamDS->In.pDSCB, DSCBSTART_LOOPING);
1870	if (SUCCEEDED(hrc))
1871	rc = VINF_SUCCESS;
1872	else
1873	{
1874	/*
1875	* Failed to start, try re-create the capture buffer.
1876	*/
1877	LogRelMax(64, ("DSound: Starting to capture on '%s' failed: %Rhrc - will try re-open it ...\n",
1878	pStreamDS->Cfg.szName, hrc));
1879
1880	IDirectSoundCaptureBuffer8_Release(pStreamDS->In.pDSCB);
1881	pStreamDS->In.pDSCB = NULL;
1882
1883	PDMAUDIOSTREAMCFG CfgReq = pStreamDS->Cfg;
1884	PDMAUDIOSTREAMCFG CfgAcq = pStreamDS->Cfg;
1885	WAVEFORMATEXTENSIBLE WaveFmtExt;
1886	dsoundWaveFmtFromCfg(&pStreamDS->Cfg, &WaveFmtExt);
1887	hrc = drvHostDSoundStreamCreateCapture(pThis, pStreamDS, &CfgReq, &CfgAcq, &WaveFmtExt);
1888	if (SUCCEEDED(hrc))
1889	{
1890	PDMAudioStrmCfgCopy(&pStreamDS->Cfg, &CfgAcq);
1891
1892	/*
1893	* Try starting capture again.
1894	*/
1895	LogRel2(("DSound: Starting capture on re-opened '%s' ... \n", pStreamDS->Cfg.szName));
1896	hrc = IDirectSoundCaptureBuffer8_Start(pStreamDS->In.pDSCB, DSCBSTART_LOOPING);
1897	if (SUCCEEDED(hrc))
1898	rc = VINF_SUCCESS;
1899	else
1900	LogRelMax(64, ("DSound: Starting to capture on re-opened '%s' failed: %Rhrc\n",
1901	pStreamDS->Cfg.szName, hrc));
1902	}
1903	else
1904	LogRelMax(64, ("DSound: Re-opening '%s' failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1905	}
1906	}
1907	else
1908	{
1909	LogRel2(("DSound: Already capturing (%#x)\n", fStatus));
1910	AssertFailed();
1911	}
1912	}
1913	else
1914	LogRelMax(64, ("DSound: Retrieving capture status for '%s' failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1915	}
1916	LogFlowFunc(("returns %Rrc\n", rc));
1917	return rc;
1918	}
1919
1920
1921	/**
1922	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamEnable}
1923	*/
1924	static DECLCALLBACK(int) drvHostDSoundHA_StreamEnable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1925	{
1926	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1927	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1928	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
1929
1930	/*
1931	* We always reset the buffer before enabling the stream (normally never necessary).
1932	*/
1933	drvHostDSoundStreamReset(pThis, pStreamDS);
1934	pStreamDS->fEnabled = true;
1935
1936	/*
1937	* Input streams will start capturing, while output streams will only start
1938	* playing once we get some audio data to play.
1939	*/
1940	int rc = VINF_SUCCESS;
1941	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
1942	rc = drvHostDSoundStreamCaptureStart(pThis, pStreamDS);
1943	else
1944	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
1945
1946	LogFlowFunc(("returns %Rrc\n", rc));
1947	return rc;
1948	}
1949
1950
1951	/**
1952	* Worker for drvHostDSoundHA_StreamDestroy, drvHostDSoundHA_StreamDisable and
1953	* drvHostDSoundHA_StreamPause.
1954	*
1955	* @returns VBox status code.
1956	* @param pThis The DSound host audio driver instance data.
1957	* @param pStreamDS The stream instance data.
1958	* @param fReset Whether to reset the buffer and state.
1959	*/
1960	static int drvHostDSoundStreamStopPlayback(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, bool fReset)
1961	{
1962	if (!pStreamDS->Out.pDSB)
1963	return VINF_SUCCESS;
1964
1965	LogRel2(("DSound: Stopping playback of '%s'...\n", pStreamDS->Cfg.szName));
1966	HRESULT hrc = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
1967	if (FAILED(hrc))
1968	{
1969	LogFunc(("IDirectSoundBuffer8_Stop -> %Rhrc; will attempt restoring the stream...\n", hrc));
1970	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
1971	hrc = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
1972	if (FAILED(hrc))
1973	LogRelMax(64, ("DSound: %s playback of '%s' failed: %Rhrc\n", fReset ? "Stopping" : "Pausing",
1974	pStreamDS->Cfg.szName, hrc));
1975	}
1976	LogRel2(("DSound: Stopped playback of '%s': %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1977
1978	if (fReset)
1979	drvHostDSoundStreamReset(pThis, pStreamDS);
1980	return SUCCEEDED(hrc) ? VINF_SUCCESS : VERR_AUDIO_STREAM_NOT_READY;
1981	}
1982
1983
1984	/**
1985	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDisable}
1986	*/
1987	static DECLCALLBACK(int) drvHostDSoundHA_StreamDisable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1988	{
1989	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1990	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1991	LogFlowFunc(("cMsLastTransfer=%RI64 ms, stream '%s' {%s} \n",
1992	pStreamDS->msLastTransfer ? RTTimeMilliTS() - pStreamDS->msLastTransfer : -1,
1993	pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
1994
1995	/*
1996	* Change the state.
1997	*/
1998	pStreamDS->fEnabled = false;
1999
2000	/*
2001	* Stop the stream and maybe reset the buffer.
2002	*/
2003	int rc = VINF_SUCCESS;
2004	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
2005	{
2006	if (pStreamDS->In.pDSCB)
2007	{
2008	HRESULT hrc = IDirectSoundCaptureBuffer_Stop(pStreamDS->In.pDSCB);
2009	if (SUCCEEDED(hrc))
2010	LogRel3(("DSound: Stopped capture on '%s'.\n", pStreamDS->Cfg.szName));
2011	else
2012	{
2013	LogRelMax(64, ("DSound: Stopping capture on '%s' failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2014	/* Don't report errors up to the caller, as it might just be a capture device change. */
2015	}
2016
2017	/* This isn't strictly speaking necessary since StreamEnable does it too... */
2018	drvHostDSoundStreamReset(pThis, pStreamDS);
2019	}
2020	}
2021	else
2022	{
2023	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
2024	if (pStreamDS->Out.pDSB)
2025	{
2026	rc = drvHostDSoundStreamStopPlayback(pThis, pStreamDS, true /fReset/);
2027	if (RT_SUCCESS(rc))
2028	LogRel3(("DSound: Stopped playback on '%s'.\n", pStreamDS->Cfg.szName));
2029	}
2030	}
2031
2032	LogFlowFunc(("returns %Rrc {%s}\n", rc, drvHostDSoundStreamStatusString(pStreamDS)));
2033	return rc;
2034	}
2035
2036
2037	/**
2038	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPause}
2039	*
2040	* @note Basically the same as drvHostDSoundHA_StreamDisable, just w/o the
2041	* buffer resetting and fEnabled change.
2042	*/
2043	static DECLCALLBACK(int) drvHostDSoundHA_StreamPause(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2044	{
2045	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2046	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2047	LogFlowFunc(("cMsLastTransfer=%RI64 ms, stream '%s' {%s} \n",
2048	pStreamDS->msLastTransfer ? RTTimeMilliTS() - pStreamDS->msLastTransfer : -1,
2049	pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
2050
2051	/*
2052	* Stop the stream and maybe reset the buffer.
2053	*/
2054	int rc = VINF_SUCCESS;
2055	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
2056	{
2057	if (pStreamDS->In.pDSCB)
2058	{
2059	HRESULT hrc = IDirectSoundCaptureBuffer_Stop(pStreamDS->In.pDSCB);
2060	if (SUCCEEDED(hrc))
2061	LogRel3(("DSound: Stopped capture on '%s'.\n", pStreamDS->Cfg.szName));
2062	else
2063	{
2064	LogRelMax(64, ("DSound: Stopping capture on '%s' failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2065	/* Don't report errors up to the caller, as it might just be a capture device change. */
2066	}
2067	}
2068	}
2069	else
2070	{
2071	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
2072	if (pStreamDS->Out.pDSB)
2073	{
2074	/* Don't stop draining buffers, we won't be resuming them right.
2075	They'll stop by themselves anyway. */
2076	if (pStreamDS->Out.fDrain)
2077	LogFunc(("Stream '%s' is draining\n", pStreamDS->Cfg.szName));
2078	else
2079	{
2080	rc = drvHostDSoundStreamStopPlayback(pThis, pStreamDS, false /fReset/);
2081	if (RT_SUCCESS(rc))
2082	LogRel3(("DSound: Stopped playback on '%s'.\n", pStreamDS->Cfg.szName));
2083	}
2084	}
2085	}
2086
2087	LogFlowFunc(("returns %Rrc {%s}\n", rc, drvHostDSoundStreamStatusString(pStreamDS)));
2088	return rc;
2089	}
2090
2091
2092	/**
2093	* Worker for drvHostDSoundHA_StreamResume and drvHostDSoundHA_StreamPlay that
2094	* starts playing the DirectSound Buffer.
2095	*
2096	* @returns VBox status code.
2097	* @param pThis Host audio driver instance.
2098	* @param pStreamDS Stream to start playing.
2099	*/
2100	static int directSoundPlayStart(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS)
2101	{
2102	if (!pStreamDS->Out.pDSB)
2103	return VERR_AUDIO_STREAM_NOT_READY;
2104
2105	LogRel2(("DSound: Starting playback of '%s' ...\n", pStreamDS->Cfg.szName));
2106	HRESULT hrc = IDirectSoundBuffer8_Play(pStreamDS->Out.pDSB, 0, 0, DSCBSTART_LOOPING);
2107	if (SUCCEEDED(hrc))
2108	return VINF_SUCCESS;
2109
2110	for (unsigned i = 0; hrc == DSERR_BUFFERLOST && i < DRV_DSOUND_RESTORE_ATTEMPTS_MAX; i++)
2111	{
2112	LogFunc(("Restarting playback failed due to lost buffer, restoring ...\n"));
2113	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
2114
2115	hrc = IDirectSoundBuffer8_Play(pStreamDS->Out.pDSB, 0, 0, DSCBSTART_LOOPING);
2116	if (SUCCEEDED(hrc))
2117	return VINF_SUCCESS;
2118	}
2119
2120	LogRelMax(64, ("DSound: Failed to start playback of '%s': %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2121	return VERR_AUDIO_STREAM_NOT_READY;
2122	}
2123
2124
2125	/**
2126	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamResume}
2127	*/
2128	static DECLCALLBACK(int) drvHostDSoundHA_StreamResume(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2129	{
2130	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2131	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2132	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2133
2134	/*
2135	* Input streams will start capturing, while output streams will only start
2136	* playing if we're past the pre-buffering state.
2137	*/
2138	int rc = VINF_SUCCESS;
2139	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
2140	rc = drvHostDSoundStreamCaptureStart(pThis, pStreamDS);
2141	else
2142	{
2143	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
2144	if (!pStreamDS->Out.fFirstTransfer)
2145	rc = directSoundPlayStart(pThis, pStreamDS);
2146	}
2147
2148	LogFlowFunc(("returns %Rrc {%s}\n", rc, drvHostDSoundStreamStatusString(pStreamDS)));
2149	return rc;
2150	}
2151
2152
2153	/**
2154	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDrain}
2155	*/
2156	static DECLCALLBACK(int) drvHostDSoundHA_StreamDrain(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2157	{
2158	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2159	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2160	AssertReturn(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT, VERR_INVALID_PARAMETER);
2161	LogFlowFunc(("cMsLastTransfer=%RI64 ms, stream '%s' {%s} \n",
2162	pStreamDS->msLastTransfer ? RTTimeMilliTS() - pStreamDS->msLastTransfer : -1,
2163	pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
2164
2165	/*
2166	* We've started the buffer in looping mode, try switch to non-looping...
2167	*/
2168	int rc = VINF_SUCCESS;
2169	if (pStreamDS->Out.pDSB && !pStreamDS->Out.fDrain)
2170	{
2171	LogRel2(("DSound: Switching playback stream '%s' to drain mode...\n", pStreamDS->Cfg.szName));
2172	HRESULT hrc = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
2173	if (SUCCEEDED(hrc))
2174	{
2175	hrc = IDirectSoundBuffer8_Play(pStreamDS->Out.pDSB, 0, 0, 0);
2176	if (SUCCEEDED(hrc))
2177	{
2178	uint64_t const msNow = RTTimeMilliTS();
2179	pStreamDS->Out.msDrainDeadline = PDMAudioPropsBytesToMilli(&pStreamDS->Cfg.Props, pStreamDS->cbBufSize) + msNow;
2180	pStreamDS->Out.fDrain = true;
2181	}
2182	else
2183	LogRelMax(64, ("DSound: Failed to restart '%s' in drain mode: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2184	}
2185	else
2186	{
2187	Log2Func(("drain: IDirectSoundBuffer8_Stop failed: %Rhrc\n", hrc));
2188	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
2189
2190	HRESULT hrc2 = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
2191	if (SUCCEEDED(hrc2))
2192	LogFunc(("Successfully stopped the stream after restoring it. (hrc=%Rhrc)\n", hrc));
2193	else
2194	{
2195	LogRelMax(64, ("DSound: Failed to stop playback stream '%s' for putting into drain mode: %Rhrc (initial), %Rhrc (after restore)\n",
2196	pStreamDS->Cfg.szName, hrc, hrc2));
2197	rc = VERR_AUDIO_STREAM_NOT_READY;
2198	}
2199	}
2200	}
2201	LogFlowFunc(("returns %Rrc {%s}\n", rc, drvHostDSoundStreamStatusString(pStreamDS)));
2202	return rc;
2203	}
2204
2205
2206	/**
2207	* Retrieves the number of free bytes available for writing to a DirectSound output stream.
2208	*
2209	* @return VBox status code. VERR_NOT_AVAILABLE if unable to determine or the
2210	* buffer was not recoverable.
2211	* @param pThis Host audio driver instance.
2212	* @param pStreamDS DirectSound output stream to retrieve number for.
2213	* @param pdwFree Where to return the free amount on success.
2214	* @param poffPlayCursor Where to return the play cursor offset.
2215	*/
2216	static int dsoundGetFreeOut(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, DWORD pdwFree, DWORD poffPlayCursor)
2217	{
2218	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
2219	AssertPtrReturn(pStreamDS, VERR_INVALID_POINTER);
2220	AssertPtrReturn(pdwFree, VERR_INVALID_POINTER);
2221	AssertPtr(poffPlayCursor);
2222
2223	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT); /* Paranoia. */
2224
2225	LPDIRECTSOUNDBUFFER8 pDSB = pStreamDS->Out.pDSB;
2226	AssertPtrReturn(pDSB, VERR_INVALID_POINTER);
2227
2228	HRESULT hr = S_OK;
2229
2230	/* Get the current play position which is used for calculating the free space in the buffer. */
2231	for (unsigned i = 0; i < DRV_DSOUND_RESTORE_ATTEMPTS_MAX; i++)
2232	{
2233	DWORD offPlayCursor = 0;
2234	DWORD offWriteCursor = 0;
2235	hr = IDirectSoundBuffer8_GetCurrentPosition(pDSB, &offPlayCursor, &offWriteCursor);
2236	if (SUCCEEDED(hr))
2237	{
2238	int32_t cbDiff = offWriteCursor - offPlayCursor;
2239	if (cbDiff < 0)
2240	cbDiff += pStreamDS->cbBufSize;
2241
2242	int32_t cbFree = offPlayCursor - pStreamDS->Out.offWritePos;
2243	if (cbFree < 0)
2244	cbFree += pStreamDS->cbBufSize;
2245
2246	if (cbFree > (int32_t)pStreamDS->cbBufSize - cbDiff)
2247	{
2248	/** @todo count/log these. */
2249	pStreamDS->Out.offWritePos = offWriteCursor;
2250	cbFree = pStreamDS->cbBufSize - cbDiff;
2251	}
2252
2253	/* When starting to use a DirectSound buffer, offPlayCursor and offWriteCursor
2254	* both point at position 0, so we won't be able to detect how many bytes
2255	* are writable that way.
2256	*
2257	* So use our per-stream written indicator to see if we just started a stream. */
2258	if (pStreamDS->Out.cbWritten == 0)
2259	cbFree = pStreamDS->cbBufSize;
2260
2261	LogRel4(("DSound: offPlayCursor=%RU32, offWriteCursor=%RU32, offWritePos=%RU32 -> cbFree=%RI32\n",
2262	offPlayCursor, offWriteCursor, pStreamDS->Out.offWritePos, cbFree));
2263
2264	*pdwFree = cbFree;
2265	*poffPlayCursor = offPlayCursor;
2266	return VINF_SUCCESS;
2267	}
2268
2269	if (hr != DSERR_BUFFERLOST) /** @todo MSDN doesn't state this error for GetCurrentPosition(). */
2270	break;
2271
2272	LogFunc(("Getting playing position failed due to lost buffer, restoring ...\n"));
2273
2274	directSoundPlayRestore(pThis, pDSB);
2275	}
2276
2277	if (hr != DSERR_BUFFERLOST) /* Avoid log flooding if the error is still there. */
2278	DSLOGREL(("DSound: Getting current playback position failed with %Rhrc\n", hr));
2279
2280	LogFunc(("Failed with %Rhrc\n", hr));
2281
2282	*poffPlayCursor = pStreamDS->cbBufSize;
2283	return VERR_NOT_AVAILABLE;
2284	}
2285
2286
2287	/**
2288	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetState}
2289	*/
2290	static DECLCALLBACK(PDMHOSTAUDIOSTREAMSTATE) drvHostDSoundHA_StreamGetState(PPDMIHOSTAUDIO pInterface,
2291	PPDMAUDIOBACKENDSTREAM pStream)
2292	{
2293	RT_NOREF(pInterface);
2294	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2295	AssertPtrReturn(pStreamDS, PDMHOSTAUDIOSTREAMSTATE_INVALID);
2296
2297	if ( pStreamDS->Cfg.enmDir != PDMAUDIODIR_OUT
2298	\|\| !pStreamDS->Out.fDrain)
2299	{
2300	LogFlowFunc(("returns OKAY for '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2301	return PDMHOSTAUDIOSTREAMSTATE_OKAY;
2302	}
2303	LogFlowFunc(("returns DRAINING for '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2304	return PDMHOSTAUDIOSTREAMSTATE_DRAINING;
2305	}
2306
2307	#if 0 /* This isn't working as the write cursor is more a function of time than what we do.
2308	Previously we only reported the pre-buffering status anyway, so no harm. */
2309	/**
2310	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetPending}
2311	*/
2312	static DECLCALLBACK(uint32_t) drvHostDSoundHA_StreamGetPending(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2313	{
2314	/PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio); / RT_NOREF(pInterface);
2315	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2316	AssertPtrReturn(pStreamDS, 0);
2317	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2318
2319	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT)
2320	{
2321	/* This is a similar calculation as for StreamGetReadable, only for an output buffer. */
2322	AssertPtr(pStreamDS->In.pDSCB);
2323	DWORD offPlayCursor = 0;
2324	DWORD offWriteCursor = 0;
2325	HRESULT hrc = IDirectSoundBuffer8_GetCurrentPosition(pStreamDS->Out.pDSB, &offPlayCursor, &offWriteCursor);
2326	if (SUCCEEDED(hrc))
2327	{
2328	uint32_t cbPending = dsoundRingDistance(offWriteCursor, offPlayCursor, pStreamDS->cbBufSize);
2329	Log3Func(("cbPending=%RU32\n", cbPending));
2330	return cbPending;
2331	}
2332	AssertMsgFailed(("hrc=%Rhrc\n", hrc));
2333	}
2334	/* else: For input streams we never have any pending data. */
2335
2336	return 0;
2337	}
2338	#endif
2339
2340	/**
2341	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable}
2342	*/
2343	static DECLCALLBACK(uint32_t) drvHostDSoundHA_StreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2344	{
2345	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2346	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2347	AssertPtrReturn(pStreamDS, 0);
2348	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2349
2350	DWORD cbFree = 0;
2351	DWORD offIgn = 0;
2352	int rc = dsoundGetFreeOut(pThis, pStreamDS, &cbFree, &offIgn);
2353	AssertRCReturn(rc, 0);
2354
2355	return cbFree;
2356	}
2357
2358
2359	/**
2360	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay}
2361	*/
2362	static DECLCALLBACK(int) drvHostDSoundHA_StreamPlay(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
2363	const void pvBuf, uint32_t cbBuf, uint32_t pcbWritten)
2364	{
2365	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2366	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2367	AssertPtrReturn(pStreamDS, 0);
2368	if (cbBuf)
2369	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
2370	AssertPtrReturn(pcbWritten, VERR_INVALID_POINTER);
2371
2372	if (pStreamDS->fEnabled)
2373	AssertReturn(pStreamDS->cbBufSize, VERR_INTERNAL_ERROR_2);
2374	else
2375	{
2376	Log2Func(("Skipping disabled stream {%s}\n", drvHostDSoundStreamStatusString(pStreamDS)));
2377	return VINF_SUCCESS;
2378	}
2379	Log4Func(("cbBuf=%#x stream '%s' {%s}\n", cbBuf, pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
2380
2381	/** @todo Any condition under which we should call dsoundUpdateStatusInternal(pThis) here?
2382	* The old code thought it did so in case of failure, only it couldn't ever fails, so it never did. */
2383
2384	/*
2385	* Transfer loop.
2386	*/
2387	uint32_t cbWritten = 0;
2388	while (cbBuf > 0)
2389	{
2390	/*
2391	* Figure out how much we can possibly write.
2392	*/
2393	DWORD offPlayCursor = 0;
2394	DWORD cbWritable = 0;
2395	int rc = dsoundGetFreeOut(pThis, pStreamDS, &cbWritable, &offPlayCursor);
2396	AssertRCReturn(rc, rc);
2397	if (cbWritable < pStreamDS->Cfg.Props.cbFrame)
2398	break;
2399
2400	uint32_t const cbToWrite = RT_MIN(cbWritable, cbBuf);
2401	Log3Func(("offPlay=%#x offWritePos=%#x -> cbWritable=%#x cbToWrite=%#x {%s}\n", offPlayCursor, pStreamDS->Out.offWritePos,
2402	cbWritable, cbToWrite, drvHostDSoundStreamStatusString(pStreamDS) ));
2403
2404	/*
2405	* Lock that amount of buffer.
2406	*/
2407	PVOID pv1 = NULL;
2408	DWORD cb1 = 0;
2409	PVOID pv2 = NULL;
2410	DWORD cb2 = 0;
2411	HRESULT hrc = directSoundPlayLock(pThis, pStreamDS, pStreamDS->Out.offWritePos, cbToWrite,
2412	&pv1, &pv2, &cb1, &cb2, 0 /dwFlags/);
2413	AssertMsgReturn(SUCCEEDED(hrc), ("%Rhrc\n", hrc), VERR_ACCESS_DENIED); /** @todo translate these status codes already! */
2414	//AssertMsg(cb1 + cb2 == cbToWrite, ("%#x + %#x vs %#x\n", cb1, cb2, cbToWrite));
2415
2416	/*
2417	* Copy over the data.
2418	*/
2419	memcpy(pv1, pvBuf, cb1);
2420	pvBuf = (uint8_t *)pvBuf + cb1;
2421	cbBuf -= cb1;
2422	cbWritten += cb1;
2423
2424	if (pv2)
2425	{
2426	memcpy(pv2, pvBuf, cb2);
2427	pvBuf = (uint8_t *)pvBuf + cb2;
2428	cbBuf -= cb2;
2429	cbWritten += cb2;
2430	}
2431
2432	/*
2433	* Unlock and update the write position.
2434	*/
2435	directSoundPlayUnlock(pThis, pStreamDS->Out.pDSB, pv1, pv2, cb1, cb2); /** @todo r=bird: pThis + pDSB parameters here for Unlock, but only pThis for Lock. Why? */
2436	pStreamDS->Out.offWritePos = (pStreamDS->Out.offWritePos + cb1 + cb2) % pStreamDS->cbBufSize;
2437
2438	/*
2439	* If this was the first chunk, kick off playing.
2440	*/
2441	if (!pStreamDS->Out.fFirstTransfer)
2442	{ /* likely */ }
2443	else
2444	{
2445	*pcbWritten = cbWritten;
2446	rc = directSoundPlayStart(pThis, pStreamDS);
2447	AssertRCReturn(rc, rc);
2448	pStreamDS->Out.fFirstTransfer = false;
2449	}
2450	}
2451
2452	/*
2453	* Done.
2454	*/
2455	*pcbWritten = cbWritten;
2456
2457	pStreamDS->Out.cbTransferred += cbWritten;
2458	if (cbWritten)
2459	{
2460	uint64_t const msPrev = pStreamDS->msLastTransfer; RT_NOREF(msPrev);
2461	pStreamDS->Out.cbLastTransferred = cbWritten;
2462	pStreamDS->msLastTransfer = RTTimeMilliTS();
2463	LogFlowFunc(("cbLastTransferred=%RU32, msLastTransfer=%RU64 msNow=%RU64 cMsDelta=%RU64 {%s}\n",
2464	cbWritten, msPrev, pStreamDS->msLastTransfer, msPrev ? pStreamDS->msLastTransfer - msPrev : 0,
2465	drvHostDSoundStreamStatusString(pStreamDS) ));
2466	}
2467	else if ( pStreamDS->Out.fDrain
2468	&& RTTimeMilliTS() >= pStreamDS->Out.msDrainDeadline)
2469	{
2470	LogRel2(("DSound: Stopping draining of '%s' {%s} ...\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2471	if (pStreamDS->Out.pDSB)
2472	{
2473	HRESULT hrc = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
2474	if (FAILED(hrc))
2475	LogRelMax(64, ("DSound: Failed to stop draining stream '%s': %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2476	}
2477	pStreamDS->Out.fDrain = false;
2478	pStreamDS->fEnabled = false;
2479	}
2480
2481	return VINF_SUCCESS;
2482	}
2483
2484
2485	/**
2486	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable}
2487	*/
2488	static DECLCALLBACK(uint32_t) drvHostDSoundHA_StreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2489	{
2490	/PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio); / RT_NOREF(pInterface);
2491	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2492	AssertPtrReturn(pStreamDS, 0);
2493	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN);
2494
2495	if (pStreamDS->fEnabled)
2496	{
2497	/* This is the same calculation as for StreamGetPending. */
2498	AssertPtr(pStreamDS->In.pDSCB);
2499	DWORD offCaptureCursor = 0;
2500	DWORD offReadCursor = 0;
2501	HRESULT hrc = IDirectSoundCaptureBuffer_GetCurrentPosition(pStreamDS->In.pDSCB, &offCaptureCursor, &offReadCursor);
2502	if (SUCCEEDED(hrc))
2503	{
2504	uint32_t cbPending = dsoundRingDistance(offCaptureCursor, offReadCursor, pStreamDS->cbBufSize);
2505	Log3Func(("cbPending=%RU32\n", cbPending));
2506	return cbPending;
2507	}
2508	AssertMsgFailed(("hrc=%Rhrc\n", hrc));
2509	}
2510
2511	return 0;
2512	}
2513
2514
2515	/**
2516	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
2517	*/
2518	static DECLCALLBACK(int) drvHostDSoundHA_StreamCapture(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
2519	void pvBuf, uint32_t cbBuf, uint32_t pcbRead)
2520	{
2521	/PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);/ RT_NOREF(pInterface);
2522	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2523	AssertPtrReturn(pStreamDS, 0);
2524	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
2525	AssertReturn(cbBuf, VERR_INVALID_PARAMETER);
2526	AssertPtrReturn(pcbRead, VERR_INVALID_POINTER);
2527
2528	#if 0 /** @todo r=bird: shouldn't we do the same check as for output streams? */
2529	if (pStreamDS->fEnabled)
2530	AssertReturn(pStreamDS->cbBufSize, VERR_INTERNAL_ERROR_2);
2531	else
2532	{
2533	Log2Func(("Stream disabled, skipping\n"));
2534	return VINF_SUCCESS;
2535	}
2536	#endif
2537	Log4Func(("cbBuf=%#x stream '%s' {%s}\n", cbBuf, pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
2538
2539	/*
2540	* Read loop.
2541	*/
2542	uint32_t cbRead = 0;
2543	while (cbBuf > 0)
2544	{
2545	/*
2546	* Figure out how much we can read.
2547	*/
2548	DWORD offCaptureCursor = 0;
2549	DWORD offReadCursor = 0;
2550	HRESULT hrc = IDirectSoundCaptureBuffer_GetCurrentPosition(pStreamDS->In.pDSCB, &offCaptureCursor, &offReadCursor);
2551	AssertMsgReturn(SUCCEEDED(hrc), ("%Rhrc\n", hrc), VERR_ACCESS_DENIED); /** @todo translate these status codes already! */
2552	//AssertMsg(offReadCursor == pStreamDS->In.offReadPos, ("%#x %#x\n", offReadCursor, pStreamDS->In.offReadPos));
2553
2554	uint32_t const cbReadable = dsoundRingDistance(offCaptureCursor, pStreamDS->In.offReadPos, pStreamDS->cbBufSize);
2555
2556	if (cbReadable >= pStreamDS->Cfg.Props.cbFrame)
2557	{ /* likely */ }
2558	else
2559	{
2560	if (cbRead > 0)
2561	{ /* likely */ }
2562	else if (pStreamDS->In.cOverruns < 32)
2563	{
2564	pStreamDS->In.cOverruns++;
2565	DSLOG(("DSound: Warning: Buffer full (size is %zu bytes), skipping to record data (overflow #%RU32)\n",
2566	pStreamDS->cbBufSize, pStreamDS->In.cOverruns));
2567	}
2568	break;
2569	}
2570
2571	uint32_t const cbToRead = RT_MIN(cbReadable, cbBuf);
2572	Log3Func(("offCapture=%#x offRead=%#x/%#x -> cbWritable=%#x cbToWrite=%#x {%s}\n", offCaptureCursor, offReadCursor,
2573	pStreamDS->In.offReadPos, cbReadable, cbToRead, drvHostDSoundStreamStatusString(pStreamDS)));
2574
2575	/*
2576	* Lock that amount of buffer.
2577	*/
2578	PVOID pv1 = NULL;
2579	DWORD cb1 = 0;
2580	PVOID pv2 = NULL;
2581	DWORD cb2 = 0;
2582	hrc = directSoundCaptureLock(pStreamDS, pStreamDS->In.offReadPos, cbToRead, &pv1, &pv2, &cb1, &cb2, 0 /dwFlags/);
2583	AssertMsgReturn(SUCCEEDED(hrc), ("%Rhrc\n", hrc), VERR_ACCESS_DENIED); /** @todo translate these status codes already! */
2584	AssertMsg(cb1 + cb2 == cbToRead, ("%#x + %#x vs %#x\n", cb1, cb2, cbToRead));
2585
2586	/*
2587	* Copy over the data.
2588	*/
2589	memcpy(pvBuf, pv1, cb1);
2590	pvBuf = (uint8_t *)pvBuf + cb1;
2591	cbBuf -= cb1;
2592	cbRead += cb1;
2593
2594	if (pv2)
2595	{
2596	memcpy(pvBuf, pv2, cb2);
2597	pvBuf = (uint8_t *)pvBuf + cb2;
2598	cbBuf -= cb2;
2599	cbRead += cb2;
2600	}
2601
2602	/*
2603	* Unlock and update the write position.
2604	*/
2605	directSoundCaptureUnlock(pStreamDS->In.pDSCB, pv1, pv2, cb1, cb2); /** @todo r=bird: pDSB parameter here for Unlock, but pStreamDS for Lock. Why? */
2606	pStreamDS->In.offReadPos = (pStreamDS->In.offReadPos + cb1 + cb2) % pStreamDS->cbBufSize;
2607	}
2608
2609	/*
2610	* Done.
2611	*/
2612	*pcbRead = cbRead;
2613	if (cbRead)
2614	{
2615	uint64_t const msPrev = pStreamDS->msLastTransfer; RT_NOREF(msPrev);
2616	pStreamDS->msLastTransfer = RTTimeMilliTS();
2617	LogFlowFunc(("cbRead=%RU32, msLastTransfer=%RU64 msNow=%RU64 cMsDelta=%RU64 {%s}\n",
2618	cbRead, msPrev, pStreamDS->msLastTransfer, msPrev ? pStreamDS->msLastTransfer - msPrev : 0,
2619	drvHostDSoundStreamStatusString(pStreamDS) ));
2620	}
2621
2622	return VINF_SUCCESS;
2623	}
2624
2625
2626	/*********************************************************************************************************************************
2627	* PDMDRVINS::IBase Interface *
2628	*********************************************************************************************************************************/
2629
2630	/**
2631	* @callback_method_impl{PDMIBASE,pfnQueryInterface}
2632	*/
2633	static DECLCALLBACK(void ) drvHostDSoundQueryInterface(PPDMIBASE pInterface, const char pszIID)
2634	{
2635	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
2636	PDRVHOSTDSOUND pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDSOUND);
2637
2638	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
2639	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio);
2640	return NULL;
2641	}
2642
2643
2644	/*********************************************************************************************************************************
2645	* PDMDRVREG Interface *
2646	*********************************************************************************************************************************/
2647
2648	/**
2649	* @callback_method_impl{FNPDMDRVDESTRUCT, pfnDestruct}
2650	*/
2651	static DECLCALLBACK(void) drvHostDSoundDestruct(PPDMDRVINS pDrvIns)
2652	{
2653	PDRVHOSTDSOUND pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDSOUND);
2654	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
2655
2656	LogFlowFuncEnter();
2657
2658	#ifdef VBOX_WITH_AUDIO_MMNOTIFICATION_CLIENT
2659	if (pThis->m_pNotificationClient)
2660	{
2661	pThis->m_pNotificationClient->Unregister();
2662	pThis->m_pNotificationClient->Release();
2663
2664	pThis->m_pNotificationClient = NULL;
2665	}
2666	#endif
2667
2668	PDMAudioHostEnumDelete(&pThis->DeviceEnum);
2669
2670	int rc2 = RTCritSectDelete(&pThis->CritSect);
2671	AssertRC(rc2);
2672
2673	LogFlowFuncLeave();
2674	}
2675
2676
2677	static LPCGUID dsoundConfigQueryGUID(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, const char pszName, RTUUID pUuid)
2678	{
2679	PCPDMDRVHLPR3 pHlp = pDrvIns->pHlpR3;
2680	LPCGUID pGuid = NULL;
2681
2682	char *pszGuid = NULL;
2683	int rc = pHlp->pfnCFGMQueryStringAlloc(pCfg, pszName, &pszGuid);
2684	if (RT_SUCCESS(rc))
2685	{
2686	rc = RTUuidFromStr(pUuid, pszGuid);
2687	if (RT_SUCCESS(rc))
2688	pGuid = (LPCGUID)&pUuid;
2689	else
2690	DSLOGREL(("DSound: Error parsing device GUID for device '%s': %Rrc\n", pszName, rc));
2691
2692	RTStrFree(pszGuid);
2693	}
2694
2695	return pGuid;
2696	}
2697
2698
2699	static void dsoundConfigInit(PDRVHOSTDSOUND pThis, PCFGMNODE pCfg)
2700	{
2701	pThis->Cfg.pGuidPlay = dsoundConfigQueryGUID(pThis->pDrvIns, pCfg, "DeviceGuidOut", &pThis->Cfg.uuidPlay);
2702	pThis->Cfg.pGuidCapture = dsoundConfigQueryGUID(pThis->pDrvIns, pCfg, "DeviceGuidIn", &pThis->Cfg.uuidCapture);
2703
2704	DSLOG(("DSound: Configuration: DeviceGuidOut {%RTuuid}, DeviceGuidIn {%RTuuid}\n",
2705	&pThis->Cfg.uuidPlay,
2706	&pThis->Cfg.uuidCapture));
2707	}
2708
2709
2710	/**
2711	* @callback_method_impl{FNPDMDRVCONSTRUCT,
2712	* Construct a DirectSound Audio driver instance.}
2713	*/
2714	static DECLCALLBACK(int) drvHostDSoundConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
2715	{
2716	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
2717	PDRVHOSTDSOUND pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDSOUND);
2718	RT_NOREF(fFlags);
2719	LogRel(("Audio: Initializing DirectSound audio driver\n"));
2720
2721	/*
2722	* Init basic data members and interfaces.
2723	*/
2724	RTListInit(&pThis->HeadStreams);
2725	pThis->pDrvIns = pDrvIns;
2726	/* IBase */
2727	pDrvIns->IBase.pfnQueryInterface = drvHostDSoundQueryInterface;
2728	/* IHostAudio */
2729	pThis->IHostAudio.pfnGetConfig = drvHostDSoundHA_GetConfig;
2730	pThis->IHostAudio.pfnGetDevices = drvHostDSoundHA_GetDevices;
2731	pThis->IHostAudio.pfnSetDevice = NULL;
2732	pThis->IHostAudio.pfnGetStatus = drvHostDSoundHA_GetStatus;
2733	pThis->IHostAudio.pfnDoOnWorkerThread = NULL;
2734	pThis->IHostAudio.pfnStreamConfigHint = NULL;
2735	pThis->IHostAudio.pfnStreamCreate = drvHostDSoundHA_StreamCreate;
2736	pThis->IHostAudio.pfnStreamInitAsync = NULL;
2737	pThis->IHostAudio.pfnStreamDestroy = drvHostDSoundHA_StreamDestroy;
2738	pThis->IHostAudio.pfnStreamNotifyDeviceChanged = NULL;
2739	pThis->IHostAudio.pfnStreamEnable = drvHostDSoundHA_StreamEnable;
2740	pThis->IHostAudio.pfnStreamDisable = drvHostDSoundHA_StreamDisable;
2741	pThis->IHostAudio.pfnStreamPause = drvHostDSoundHA_StreamPause;
2742	pThis->IHostAudio.pfnStreamResume = drvHostDSoundHA_StreamResume;
2743	pThis->IHostAudio.pfnStreamDrain = drvHostDSoundHA_StreamDrain;
2744	pThis->IHostAudio.pfnStreamGetState = drvHostDSoundHA_StreamGetState;
2745	pThis->IHostAudio.pfnStreamGetPending = NULL;
2746	pThis->IHostAudio.pfnStreamGetWritable = drvHostDSoundHA_StreamGetWritable;
2747	pThis->IHostAudio.pfnStreamPlay = drvHostDSoundHA_StreamPlay;
2748	pThis->IHostAudio.pfnStreamGetReadable = drvHostDSoundHA_StreamGetReadable;
2749	pThis->IHostAudio.pfnStreamCapture = drvHostDSoundHA_StreamCapture;
2750
2751	/*
2752	* Init the static parts.
2753	*/
2754	PDMAudioHostEnumInit(&pThis->DeviceEnum);
2755
2756	pThis->fEnabledIn = false;
2757	pThis->fEnabledOut = false;
2758
2759	/*
2760	* Verify that IDirectSound is available.
2761	*/
2762	LPDIRECTSOUND pDirectSound = NULL;
2763	HRESULT hrc = CoCreateInstance(CLSID_DirectSound, NULL, CLSCTX_ALL, IID_IDirectSound, (void **)&pDirectSound);
2764	if (SUCCEEDED(hrc))
2765	IDirectSound_Release(pDirectSound);
2766	else
2767	{
2768	LogRel(("DSound: DirectSound not available: %Rhrc\n", hrc));
2769	return VERR_AUDIO_BACKEND_INIT_FAILED;
2770	}
2771
2772	#ifdef VBOX_WITH_AUDIO_MMNOTIFICATION_CLIENT
2773	/*
2774	* Set up WASAPI device change notifications (Vista+).
2775	*/
2776	if (RTSystemGetNtVersion() >= RTSYSTEM_MAKE_NT_VERSION(6, 0, 0))
2777	{
2778	/* Get the notification interface (from DrvAudio). */
2779	# ifdef VBOX_WITH_AUDIO_CALLBACKS
2780	PPDMIHOSTAUDIOPORT pIHostAudioPort = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIHOSTAUDIOPORT);
2781	Assert(pIHostAudioPort);
2782	# else
2783	PPDMIHOSTAUDIOPORT pIHostAudioPort = NULL;
2784	# endif
2785	#ifdef RT_EXCEPTIONS_ENABLED
2786	try
2787	#endif
2788	{
2789	pThis->m_pNotificationClient = new DrvHostAudioDSoundMMNotifClient(pIHostAudioPort,
2790	pThis->Cfg.pGuidCapture == NULL,
2791	pThis->Cfg.pGuidPlay == NULL);
2792	}
2793	#ifdef RT_EXCEPTIONS_ENABLED
2794	catch (std::bad_alloc &)
2795	{
2796	return VERR_NO_MEMORY;
2797	}
2798	#else
2799	AssertReturn(pThis->m_pNotificationClient, VERR_NO_MEMORY);
2800	#endif
2801
2802	hrc = pThis->m_pNotificationClient->Initialize();
2803	if (SUCCEEDED(hrc))
2804	{
2805	hrc = pThis->m_pNotificationClient->Register();
2806	if (SUCCEEDED(hrc))
2807	LogRel2(("DSound: Notification client is enabled (ver %#RX64)\n", RTSystemGetNtVersion()));
2808	else
2809	{
2810	LogRel(("DSound: Notification client registration failed: %Rhrc\n", hrc));
2811	return VERR_AUDIO_BACKEND_INIT_FAILED;
2812	}
2813	}
2814	else
2815	{
2816	LogRel(("DSound: Notification client initialization failed: %Rhrc\n", hrc));
2817	return VERR_AUDIO_BACKEND_INIT_FAILED;
2818	}
2819	}
2820	else
2821	LogRel2(("DSound: Notification client is disabled (ver %#RX64)\n", RTSystemGetNtVersion()));
2822	#endif
2823
2824	/*
2825	* Initialize configuration values and critical section.
2826	*/
2827	dsoundConfigInit(pThis, pCfg);
2828	return RTCritSectInit(&pThis->CritSect);
2829	}
2830
2831
2832	/**
2833	* PDM driver registration.
2834	*/
2835	const PDMDRVREG g_DrvHostDSound =
2836	{
2837	/* u32Version */
2838	PDM_DRVREG_VERSION,
2839	/* szName */
2840	"DSoundAudio",
2841	/* szRCMod */
2842	"",
2843	/* szR0Mod */
2844	"",
2845	/* pszDescription */
2846	"DirectSound Audio host driver",
2847	/* fFlags */
2848	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
2849	/* fClass. */
2850	PDM_DRVREG_CLASS_AUDIO,
2851	/* cMaxInstances */
2852	~0U,
2853	/* cbInstance */
2854	sizeof(DRVHOSTDSOUND),
2855	/* pfnConstruct */
2856	drvHostDSoundConstruct,
2857	/* pfnDestruct */
2858	drvHostDSoundDestruct,
2859	/* pfnRelocate */
2860	NULL,
2861	/* pfnIOCtl */
2862	NULL,
2863	/* pfnPowerOn */
2864	NULL,
2865	/* pfnReset */
2866	NULL,
2867	/* pfnSuspend */
2868	NULL,
2869	/* pfnResume */
2870	NULL,
2871	/* pfnAttach */
2872	NULL,
2873	/* pfnDetach */
2874	NULL,
2875	/* pfnPowerOff */
2876	NULL,
2877	/* pfnSoftReset */
2878	NULL,
2879	/* u32EndVersion */
2880	PDM_DRVREG_VERSION
2881	};

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source: vbox/trunk/src/VBox/Devices/Audio/DrvHostAudioDSound.cpp@ 98193

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