DrvAudioVRDE.cpp@ 79361

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1	/* $Id: DrvAudioVRDE.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2	/** @file
3	* VRDE audio backend for Main.
4	*/
5
6	/*
7	* Copyright (C) 2013-2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
23	#include "LoggingNew.h"
24
25	#include <VBox/log.h>
26	#include "DrvAudioVRDE.h"
27	#include "ConsoleImpl.h"
28	#include "ConsoleVRDPServer.h"
29
30	#include "../../Devices/Audio/DrvAudio.h"
31
32	#include <iprt/mem.h>
33	#include <iprt/cdefs.h>
34	#include <iprt/circbuf.h>
35
36	#include <VBox/vmm/pdmaudioifs.h>
37	#include <VBox/vmm/pdmdrv.h>
38	#include <VBox/RemoteDesktop/VRDE.h>
39	#include <VBox/vmm/cfgm.h>
40	#include <VBox/err.h>
41
42
43	/*********************************************************************************************************************************
44	* Structures and Typedefs *
45	*********************************************************************************************************************************/
46	/**
47	* Audio VRDE driver instance data.
48	*/
49	typedef struct DRVAUDIOVRDE
50	{
51	/** Pointer to audio VRDE object. */
52	AudioVRDE *pAudioVRDE;
53	/** Pointer to the driver instance structure. */
54	PPDMDRVINS pDrvIns;
55	/** Pointer to host audio interface. */
56	PDMIHOSTAUDIO IHostAudio;
57	/** Pointer to the VRDP's console object. */
58	ConsoleVRDPServer *pConsoleVRDPServer;
59	/** Pointer to the DrvAudio port interface that is above us. */
60	PPDMIAUDIOCONNECTOR pDrvAudio;
61	/** Number of connected clients to this VRDE instance. */
62	uint32_t cClients;
63	} DRVAUDIOVRDE, *PDRVAUDIOVRDE;
64
65	typedef struct VRDESTREAM
66	{
67	/** The stream's acquired configuration. */
68	PPDMAUDIOSTREAMCFG pCfg;
69	union
70	{
71	struct
72	{
73	/** Circular buffer for holding the recorded audio frames from the host. */
74	PRTCIRCBUF pCircBuf;
75	} In;
76	};
77	} VRDESTREAM, *PVRDESTREAM;
78
79	/* Sanity. */
80	AssertCompileSize(PDMAUDIOFRAME, sizeof(int64_t) * 2 /* st_sample_t using by VRDP server */);
81
82	static int vrdeCreateStreamIn(PVRDESTREAM pStreamVRDE, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
83	{
84	RT_NOREF(pCfgReq);
85	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
86
87	pCfgAcq->Props.uHz = 22050; /* The VRDP server's internal frequency. */
88	pCfgAcq->Props.cChannels = 2;
89	pCfgAcq->Props.cBytes = 2; /* 16 bit. */
90	pCfgAcq->Props.fSigned = true;
91	pCfgAcq->Props.fSwapEndian = false;
92	pCfgAcq->Props.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pCfgAcq->Props.cBytes, pCfgAcq->Props.cChannels);
93
94	/* According to the VRDP docs, the VRDP server stores audio in 200ms chunks. */
95	const uint32_t cfVRDPServer = DrvAudioHlpMilliToFrames(200 /* ms */, &pCfgAcq->Props);
96
97	int rc = RTCircBufCreate(&pStreamVRDE->In.pCircBuf, DrvAudioHlpFramesToBytes(cfVRDPServer, &pCfgAcq->Props));
98	if (RT_SUCCESS(rc))
99	{
100	/*
101	* Because of historical reasons the VRDP server operates on st_sample_t structures internally,
102	* which is 2 * int64_t for left/right (stereo) channels.
103	*
104	* As the audio connector also uses this format, set the layout to "raw" and just let pass through
105	* the data without any layout modification needed.
106	*/
107	pCfgAcq->enmLayout = PDMAUDIOSTREAMLAYOUT_RAW;
108
109	pCfgAcq->Backend.cfPeriod = cfVRDPServer;
110	pCfgAcq->Backend.cfBufferSize = pCfgAcq->Backend.cfPeriod * 2; /* Use "double buffering". */
111	pCfgAcq->Backend.cfPreBuf = pCfgAcq->Backend.cfPeriod;
112	}
113
114	return rc;
115	}
116
117
118	static int vrdeCreateStreamOut(PVRDESTREAM pStreamVRDE, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
119	{
120	RT_NOREF(pStreamVRDE, pCfgReq);
121
122	if (pCfgAcq)
123	{
124	/*
125	* Because of historical reasons the VRDP server operates on st_sample_t structures internally,
126	* which is 2 * int64_t for left/right (stereo) channels.
127	*
128	* As the audio connector also uses this format, set the layout to "raw" and just let pass through
129	* the data without any layout modification needed.
130	*/
131	pCfgAcq->enmLayout = PDMAUDIOSTREAMLAYOUT_RAW;
132
133	pCfgAcq->Props.uHz = 22050; /* The VRDP server's internal frequency. */
134	pCfgAcq->Props.cChannels = 2;
135	pCfgAcq->Props.cBytes = 2; /* 16 bit. */
136	pCfgAcq->Props.fSigned = true;
137	pCfgAcq->Props.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pCfgAcq->Props.cBytes, pCfgAcq->Props.cChannels);
138
139	/* According to the VRDP docs, the VRDP server stores audio in 200ms chunks. */
140	pCfgAcq->Backend.cfPeriod = DrvAudioHlpMilliToFrames(20 /* ms */, &pCfgAcq->Props);
141	pCfgAcq->Backend.cfBufferSize = DrvAudioHlpMilliToFrames(100 /* ms */, &pCfgAcq->Props);
142	pCfgAcq->Backend.cfPreBuf = pCfgAcq->Backend.cfPeriod * 2;
143	}
144
145	return VINF_SUCCESS;
146	}
147
148
149	static int vrdeControlStreamOut(PDRVAUDIOVRDE pDrv, PVRDESTREAM pStreamVRDE, PDMAUDIOSTREAMCMD enmStreamCmd)
150	{
151	RT_NOREF(pDrv, pStreamVRDE, enmStreamCmd);
152
153	LogFlowFunc(("enmStreamCmd=%ld\n", enmStreamCmd));
154
155	return VINF_SUCCESS;
156	}
157
158
159	static int vrdeControlStreamIn(PDRVAUDIOVRDE pDrv, PVRDESTREAM pStreamVRDE, PDMAUDIOSTREAMCMD enmStreamCmd)
160	{
161	LogFlowFunc(("enmStreamCmd=%ld\n", enmStreamCmd));
162
163	if (!pDrv->pConsoleVRDPServer)
164	return VINF_SUCCESS;
165
166	int rc;
167
168	/* Initialize only if not already done. */
169	switch (enmStreamCmd)
170	{
171	case PDMAUDIOSTREAMCMD_ENABLE:
172	{
173	rc = pDrv->pConsoleVRDPServer->SendAudioInputBegin(NULL, pStreamVRDE,
174	DrvAudioHlpMilliToFrames(200 /* ms */, &pStreamVRDE->pCfg->Props),
175	pStreamVRDE->pCfg->Props.uHz, pStreamVRDE->pCfg->Props.cChannels,
176	pStreamVRDE->pCfg->Props.cBytes * 8 /* Bit */);
177	if (rc == VERR_NOT_SUPPORTED)
178	{
179	LogRel2(("Audio: No VRDE client connected, so no input recording available\n"));
180	rc = VINF_SUCCESS;
181	}
182
183	break;
184	}
185
186	case PDMAUDIOSTREAMCMD_DISABLE:
187	{
188	pDrv->pConsoleVRDPServer->SendAudioInputEnd(NULL /* pvUserCtx */);
189	rc = VINF_SUCCESS;
190
191	break;
192	}
193
194	case PDMAUDIOSTREAMCMD_PAUSE:
195	{
196	rc = VINF_SUCCESS;
197	break;
198	}
199
200	case PDMAUDIOSTREAMCMD_RESUME:
201	{
202	rc = VINF_SUCCESS;
203	break;
204	}
205
206	default:
207	{
208	rc = VERR_NOT_SUPPORTED;
209	break;
210	}
211	}
212
213	if (RT_FAILURE(rc))
214	LogFunc(("Failed with %Rrc\n", rc));
215
216	return rc;
217	}
218
219
220	/**
221	* @interface_method_impl{PDMIHOSTAUDIO,pfnInit}
222	*/
223	static DECLCALLBACK(int) drvAudioVRDEInit(PPDMIHOSTAUDIO pInterface)
224	{
225	RT_NOREF(pInterface);
226	LogFlowFuncEnter();
227
228	return VINF_SUCCESS;
229	}
230
231
232	/**
233	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
234	*/
235	static DECLCALLBACK(int) drvAudioVRDEStreamCapture(PPDMIHOSTAUDIO pInterface,
236	PPDMAUDIOBACKENDSTREAM pStream, void pvBuf, uint32_t cxBuf, uint32_t pcxRead)
237	{
238	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
239	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
240	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
241	AssertReturn(cxBuf, VERR_INVALID_PARAMETER);
242	/* pcxRead is optional. */
243
244	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
245
246	size_t cbData = 0;
247
248	if (RTCircBufUsed(pStreamVRDE->In.pCircBuf))
249	{
250	void *pvData;
251
252	RTCircBufAcquireReadBlock(pStreamVRDE->In.pCircBuf, cxBuf, &pvData, &cbData);
253
254	if (cbData)
255	memcpy(pvBuf, pvData, cbData);
256
257	RTCircBufReleaseReadBlock(pStreamVRDE->In.pCircBuf, cbData);
258	}
259
260	if (pcxRead)
261	*pcxRead = (uint32_t)cbData;
262
263	return VINF_SUCCESS;
264	}
265
266
267	/**
268	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay}
269	*/
270	static DECLCALLBACK(int) drvAudioVRDEStreamPlay(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
271	const void pvBuf, uint32_t cxBuf, uint32_t pcxWritten)
272	{
273	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
274	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
275	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
276	AssertReturn(cxBuf, VERR_INVALID_PARAMETER);
277	/* pcxWritten is optional. */
278
279	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
280	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
281
282	if (!pDrv->pConsoleVRDPServer)
283	return VERR_NOT_AVAILABLE;
284
285	/* Note: We get the number of frames in cxBuf
286	* (since we specified PDMAUDIOSTREAMLAYOUT_RAW as the audio data layout) on stream creation. */
287	uint32_t cfLive = cxBuf;
288
289	PPDMAUDIOPCMPROPS pProps = &pStreamVRDE->pCfg->Props;
290
291	VRDEAUDIOFORMAT format = VRDE_AUDIO_FMT_MAKE(pProps->uHz,
292	pProps->cChannels,
293	pProps->cBytes * 8 /* Bit */,
294	pProps->fSigned);
295
296	/* Use the internal counter to track if we (still) can write to the VRDP server
297	* or if we need to wait another round (time slot). */
298	uint32_t cfToWrite = cfLive;
299
300	Log3Func(("cfLive=%RU32, cfToWrite=%RU32\n", cfLive, cfToWrite));
301
302	/* Don't play more than available. */
303	if (cfToWrite > cfLive)
304	cfToWrite = cfLive;
305
306	int rc = VINF_SUCCESS;
307
308	PPDMAUDIOFRAME paSampleBuf = (PPDMAUDIOFRAME)pvBuf;
309	AssertPtr(paSampleBuf);
310
311	/*
312	* Call the VRDP server with the data.
313	*/
314	uint32_t cfWritten = 0;
315	while (cfToWrite)
316	{
317	uint32_t cfChunk = cfToWrite; /** @todo For now write all at once. */
318
319	if (!cfChunk) /* Nothing to send. Bail out. */
320	break;
321
322	/* Note: The VRDP server expects int64_t samples per channel, regardless of the actual
323	* sample bits (e.g 8 or 16 bits). */
324	pDrv->pConsoleVRDPServer->SendAudioSamples(paSampleBuf + cfWritten, cfChunk /* Frames */, format);
325
326	cfWritten += cfChunk;
327	Assert(cfWritten <= cfLive);
328
329	Assert(cfToWrite >= cfChunk);
330	cfToWrite -= cfChunk;
331	}
332
333	if (RT_SUCCESS(rc))
334	{
335	/* Return frames instead of bytes here
336	* (since we specified PDMAUDIOSTREAMLAYOUT_RAW as the audio data layout). */
337	if (pcxWritten)
338	*pcxWritten = cfWritten;
339	}
340
341	return rc;
342	}
343
344
345	static int vrdeDestroyStreamIn(PDRVAUDIOVRDE pDrv, PVRDESTREAM pStreamVRDE)
346	{
347	if (pDrv->pConsoleVRDPServer)
348	pDrv->pConsoleVRDPServer->SendAudioInputEnd(NULL);
349
350	if (pStreamVRDE->In.pCircBuf)
351	{
352	RTCircBufDestroy(pStreamVRDE->In.pCircBuf);
353	pStreamVRDE->In.pCircBuf = NULL;
354	}
355
356	return VINF_SUCCESS;
357	}
358
359
360	static int vrdeDestroyStreamOut(PDRVAUDIOVRDE pDrv, PVRDESTREAM pStreamVRDE)
361	{
362	RT_NOREF(pDrv, pStreamVRDE);
363
364	return VINF_SUCCESS;
365	}
366
367
368	/**
369	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig}
370	*/
371	static DECLCALLBACK(int) drvAudioVRDEGetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg)
372	{
373	RT_NOREF(pInterface);
374	AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER);
375
376	RTStrPrintf2(pBackendCfg->szName, sizeof(pBackendCfg->szName), "VRDE audio driver");
377
378	pBackendCfg->cbStreamOut = sizeof(VRDESTREAM);
379	pBackendCfg->cbStreamIn = sizeof(VRDESTREAM);
380	pBackendCfg->cMaxStreamsIn = UINT32_MAX;
381	pBackendCfg->cMaxStreamsOut = UINT32_MAX;
382
383	return VINF_SUCCESS;
384	}
385
386
387	/**
388	* @interface_method_impl{PDMIHOSTAUDIO,pfnShutdown}
389	*/
390	static DECLCALLBACK(void) drvAudioVRDEShutdown(PPDMIHOSTAUDIO pInterface)
391	{
392	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
393	AssertPtrReturnVoid(pDrv);
394
395	if (pDrv->pConsoleVRDPServer)
396	pDrv->pConsoleVRDPServer->SendAudioInputEnd(NULL);
397	}
398
399
400	/**
401	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus}
402	*/
403	static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvAudioVRDEGetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir)
404	{
405	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
406	AssertPtrReturn(pDrv, PDMAUDIOBACKENDSTS_ERROR);
407
408	RT_NOREF(enmDir);
409
410	return PDMAUDIOBACKENDSTS_RUNNING;
411	}
412
413
414	/**
415	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate}
416	*/
417	static DECLCALLBACK(int) drvAudioVRDEStreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
418	PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
419	{
420	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
421	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
422	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
423	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
424
425	RT_NOREF(pInterface);
426
427	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
428
429	int rc;
430	if (pCfgReq->enmDir == PDMAUDIODIR_IN)
431	rc = vrdeCreateStreamIn (pStreamVRDE, pCfgReq, pCfgAcq);
432	else
433	rc = vrdeCreateStreamOut(pStreamVRDE, pCfgReq, pCfgAcq);
434
435	if (RT_SUCCESS(rc))
436	{
437	pStreamVRDE->pCfg = DrvAudioHlpStreamCfgDup(pCfgAcq);
438	if (!pStreamVRDE->pCfg)
439	rc = VERR_NO_MEMORY;
440	}
441
442	return rc;
443	}
444
445
446	/**
447	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy}
448	*/
449	static DECLCALLBACK(int) drvAudioVRDEStreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
450	{
451	RT_NOREF(pInterface);
452	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
453
454	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
455	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
456
457	if (!pStreamVRDE->pCfg) /* Not (yet) configured? Skip. */
458	return VINF_SUCCESS;
459
460	int rc;
461	if (pStreamVRDE->pCfg->enmDir == PDMAUDIODIR_IN)
462	rc = vrdeDestroyStreamIn(pDrv, pStreamVRDE);
463	else
464	rc = vrdeDestroyStreamOut(pDrv, pStreamVRDE);
465
466	if (RT_SUCCESS(rc))
467	{
468	DrvAudioHlpStreamCfgFree(pStreamVRDE->pCfg);
469	pStreamVRDE->pCfg = NULL;
470	}
471
472	return rc;
473	}
474
475
476	/**
477	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamControl}
478	*/
479	static DECLCALLBACK(int) drvAudioVRDEStreamControl(PPDMIHOSTAUDIO pInterface,
480	PPDMAUDIOBACKENDSTREAM pStream, PDMAUDIOSTREAMCMD enmStreamCmd)
481	{
482	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
483	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
484
485	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
486	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
487
488	if (!pStreamVRDE->pCfg) /* Not (yet) configured? Skip. */
489	return VINF_SUCCESS;
490
491	int rc;
492	if (pStreamVRDE->pCfg->enmDir == PDMAUDIODIR_IN)
493	rc = vrdeControlStreamIn(pDrv, pStreamVRDE, enmStreamCmd);
494	else
495	rc = vrdeControlStreamOut(pDrv, pStreamVRDE, enmStreamCmd);
496
497	return rc;
498	}
499
500
501	/**
502	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable}
503	*/
504	static DECLCALLBACK(uint32_t) drvAudioVRDEStreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
505	{
506	RT_NOREF(pInterface);
507
508	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
509
510	if (pStreamVRDE->pCfg->enmDir == PDMAUDIODIR_IN)
511	{
512	/* Return frames instead of bytes here
513	* (since we specified PDMAUDIOSTREAMLAYOUT_RAW as the audio data layout). */
514	return (uint32_t)PDMAUDIOSTREAMCFG_B2F(pStreamVRDE->pCfg, RTCircBufUsed(pStreamVRDE->In.pCircBuf));
515	}
516
517	return 0;
518	}
519
520
521	/**
522	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable}
523	*/
524	static DECLCALLBACK(uint32_t) drvAudioVRDEStreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
525	{
526	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
527	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
528
529	PPDMAUDIOPCMPROPS pProps = &pStreamVRDE->pCfg->Props;
530
531	RT_NOREF(pDrv, pProps);
532
533	/* Return frames instead of bytes here
534	* (since we specified PDMAUDIOSTREAMLAYOUT_RAW as the audio data layout). */
535	if (pDrv->cClients)
536	return _16K; /** @todo Find some sane value here. We probably need a VRDE API VRDE to specify this. */
537
538	return 0;
539	}
540
541
542	/**
543	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetStatus}
544	*/
545	static DECLCALLBACK(PDMAUDIOSTREAMSTS) drvAudioVRDEStreamGetStatus(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
546	{
547	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
548	RT_NOREF(pStream);
549
550	PDMAUDIOSTREAMSTS streamSts = PDMAUDIOSTREAMSTS_FLAG_INITIALIZED;
551
552	if (pDrv->cClients) /* If any clients are connected, flag the stream as enabled. */
553	streamSts \|= PDMAUDIOSTREAMSTS_FLAG_ENABLED;
554
555	return streamSts;
556	}
557
558
559	/**
560	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamIterate}
561	*/
562	static DECLCALLBACK(int) drvAudioVRDEStreamIterate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
563	{
564	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
565	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
566
567	/* Nothing to do here for VRDE. */
568	return VINF_SUCCESS;
569	}
570
571
572	/**
573	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
574	*/
575	static DECLCALLBACK(void ) drvAudioVRDEQueryInterface(PPDMIBASE pInterface, const char pszIID)
576	{
577	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
578	PDRVAUDIOVRDE pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVRDE);
579
580	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
581	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio);
582	return NULL;
583	}
584
585
586	AudioVRDE::AudioVRDE(Console *pConsole)
587	: AudioDriver(pConsole)
588	, mpDrv(NULL)
589	{
590	}
591
592
593	AudioVRDE::~AudioVRDE(void)
594	{
595	if (mpDrv)
596	{
597	mpDrv->pAudioVRDE = NULL;
598	mpDrv = NULL;
599	}
600	}
601
602
603	/**
604	* @copydoc AudioDriver::configureDriver
605	*/
606	int AudioVRDE::configureDriver(PCFGMNODE pLunCfg)
607	{
608	int rc = CFGMR3InsertInteger(pLunCfg, "Object", (uintptr_t)this);
609	AssertRCReturn(rc, rc);
610	CFGMR3InsertInteger(pLunCfg, "ObjectVRDPServer", (uintptr_t)mpConsole->i_consoleVRDPServer());
611	AssertRCReturn(rc, rc);
612
613	return AudioDriver::configureDriver(pLunCfg);
614	}
615
616
617	void AudioVRDE::onVRDEClientConnect(uint32_t uClientID)
618	{
619	RT_NOREF(uClientID);
620
621	LogRel2(("Audio: VRDE client connected\n"));
622	if (mpDrv)
623	mpDrv->cClients++;
624	}
625
626
627	void AudioVRDE::onVRDEClientDisconnect(uint32_t uClientID)
628	{
629	RT_NOREF(uClientID);
630
631	LogRel2(("Audio: VRDE client disconnected\n"));
632	Assert(mpDrv->cClients);
633	if (mpDrv)
634	mpDrv->cClients--;
635	}
636
637
638	int AudioVRDE::onVRDEControl(bool fEnable, uint32_t uFlags)
639	{
640	RT_NOREF(fEnable, uFlags);
641	LogFlowThisFunc(("fEnable=%RTbool, uFlags=0x%x\n", fEnable, uFlags));
642
643	if (mpDrv == NULL)
644	return VERR_INVALID_STATE;
645
646	return VINF_SUCCESS; /* Never veto. */
647	}
648
649
650	/**
651	* Marks the beginning of sending captured audio data from a connected
652	* RDP client.
653	*
654	* @return IPRT status code.
655	* @param pvContext The context; in this case a pointer to a
656	* VRDESTREAMIN structure.
657	* @param pVRDEAudioBegin Pointer to a VRDEAUDIOINBEGIN structure.
658	*/
659	int AudioVRDE::onVRDEInputBegin(void *pvContext, PVRDEAUDIOINBEGIN pVRDEAudioBegin)
660	{
661	AssertPtrReturn(pvContext, VERR_INVALID_POINTER);
662	AssertPtrReturn(pVRDEAudioBegin, VERR_INVALID_POINTER);
663
664	PVRDESTREAM pVRDEStrmIn = (PVRDESTREAM)pvContext;
665	AssertPtrReturn(pVRDEStrmIn, VERR_INVALID_POINTER);
666
667	VRDEAUDIOFORMAT audioFmt = pVRDEAudioBegin->fmt;
668
669	int iSampleHz = VRDE_AUDIO_FMT_SAMPLE_FREQ(audioFmt); RT_NOREF(iSampleHz);
670	int cChannels = VRDE_AUDIO_FMT_CHANNELS(audioFmt); RT_NOREF(cChannels);
671	int cBits = VRDE_AUDIO_FMT_BITS_PER_SAMPLE(audioFmt); RT_NOREF(cBits);
672	bool fUnsigned = VRDE_AUDIO_FMT_SIGNED(audioFmt); RT_NOREF(fUnsigned);
673
674	LogFlowFunc(("cbSample=%RU32, iSampleHz=%d, cChannels=%d, cBits=%d, fUnsigned=%RTbool\n",
675	VRDE_AUDIO_FMT_BYTES_PER_SAMPLE(audioFmt), iSampleHz, cChannels, cBits, fUnsigned));
676
677	return VINF_SUCCESS;
678	}
679
680
681	int AudioVRDE::onVRDEInputData(void pvContext, const void pvData, uint32_t cbData)
682	{
683	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pvContext;
684	AssertPtrReturn(pStreamVRDE, VERR_INVALID_POINTER);
685
686	void *pvBuf;
687	size_t cbBuf;
688
689	RTCircBufAcquireWriteBlock(pStreamVRDE->In.pCircBuf, cbData, &pvBuf, &cbBuf);
690
691	if (cbBuf)
692	memcpy(pvBuf, pvData, cbBuf);
693
694	RTCircBufReleaseWriteBlock(pStreamVRDE->In.pCircBuf, cbBuf);
695
696	if (cbBuf < cbData)
697	LogRel(("VRDE: Capturing audio data lost %zu bytes\n", cbData - cbBuf)); /** @todo Use an error counter. */
698
699	return VINF_SUCCESS; /** @todo r=andy How to tell the caller if we were not able to handle all input data? */
700	}
701
702
703	int AudioVRDE::onVRDEInputEnd(void *pvContext)
704	{
705	RT_NOREF(pvContext);
706
707	return VINF_SUCCESS;
708	}
709
710
711	int AudioVRDE::onVRDEInputIntercept(bool fEnabled)
712	{
713	RT_NOREF(fEnabled);
714	return VINF_SUCCESS; /* Never veto. */
715	}
716
717
718	/**
719	* Construct a VRDE audio driver instance.
720	*
721	* @copydoc FNPDMDRVCONSTRUCT
722	*/
723	/* static */
724	DECLCALLBACK(int) AudioVRDE::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
725	{
726	RT_NOREF(fFlags);
727
728	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
729	PDRVAUDIOVRDE pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVRDE);
730
731	AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER);
732	AssertPtrReturn(pCfg, VERR_INVALID_POINTER);
733
734	LogRel(("Audio: Initializing VRDE driver\n"));
735	LogFlowFunc(("fFlags=0x%x\n", fFlags));
736
737	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
738	("Configuration error: Not possible to attach anything to this driver!\n"),
739	VERR_PDM_DRVINS_NO_ATTACH);
740
741	/*
742	* Init the static parts.
743	*/
744	pThis->pDrvIns = pDrvIns;
745	/* IBase */
746	pDrvIns->IBase.pfnQueryInterface = drvAudioVRDEQueryInterface;
747	/* IHostAudio */
748	PDMAUDIO_IHOSTAUDIO_CALLBACKS(drvAudioVRDE);
749
750	/*
751	* Get the ConsoleVRDPServer object pointer.
752	*/
753	void *pvUser;
754	int rc = CFGMR3QueryPtr(pCfg, "ObjectVRDPServer", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
755	AssertMsgRCReturn(rc, ("Confguration error: No/bad \"ObjectVRDPServer\" value, rc=%Rrc\n", rc), rc);
756
757	/* CFGM tree saves the pointer to ConsoleVRDPServer in the Object node of AudioVRDE. */
758	pThis->pConsoleVRDPServer = (ConsoleVRDPServer *)pvUser;
759	pThis->cClients = 0;
760
761	/*
762	* Get the AudioVRDE object pointer.
763	*/
764	pvUser = NULL;
765	rc = CFGMR3QueryPtr(pCfg, "Object", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
766	AssertMsgRCReturn(rc, ("Confguration error: No/bad \"Object\" value, rc=%Rrc\n", rc), rc);
767
768	pThis->pAudioVRDE = (AudioVRDE *)pvUser;
769	pThis->pAudioVRDE->mpDrv = pThis;
770
771	/*
772	* Get the interface for the above driver (DrvAudio) to make mixer/conversion calls.
773	* Described in CFGM tree.
774	*/
775	pThis->pDrvAudio = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIAUDIOCONNECTOR);
776	AssertMsgReturn(pThis->pDrvAudio, ("Configuration error: No upper interface specified!\n"), VERR_PDM_MISSING_INTERFACE_ABOVE);
777
778	return VINF_SUCCESS;
779	}
780
781
782	/**
783	* @interface_method_impl{PDMDRVREG,pfnDestruct}
784	*/
785	/* static */
786	DECLCALLBACK(void) AudioVRDE::drvDestruct(PPDMDRVINS pDrvIns)
787	{
788	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
789	PDRVAUDIOVRDE pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVRDE);
790	LogFlowFuncEnter();
791
792	/*
793	* If the AudioVRDE object is still alive, we must clear it's reference to
794	* us since we'll be invalid when we return from this method.
795	*/
796	if (pThis->pAudioVRDE)
797	{
798	pThis->pAudioVRDE->mpDrv = NULL;
799	pThis->pAudioVRDE = NULL;
800	}
801	}
802
803	/**
804	* @interface_method_impl{PDMDRVREG,pfnAttach}
805	*/
806	/* static */
807	DECLCALLBACK(int) AudioVRDE::drvAttach(PPDMDRVINS pDrvIns, uint32_t fFlags)
808	{
809	RT_NOREF(pDrvIns, fFlags);
810
811	LogFlowFuncEnter();
812
813	return VINF_SUCCESS;
814	}
815
816	/**
817	* @interface_method_impl{PDMDRVREG,pfnDetach}
818	*/
819	/* static */
820	DECLCALLBACK(void) AudioVRDE::drvDetach(PPDMDRVINS pDrvIns, uint32_t fFlags)
821	{
822	RT_NOREF(pDrvIns, fFlags);
823
824	LogFlowFuncEnter();
825	}
826
827
828	/**
829	* VRDE audio driver registration record.
830	*/
831	const PDMDRVREG AudioVRDE::DrvReg =
832	{
833	PDM_DRVREG_VERSION,
834	/* szName */
835	"AudioVRDE",
836	/* szRCMod */
837	"",
838	/* szR0Mod */
839	"",
840	/* pszDescription */
841	"Audio driver for VRDE backend",
842	/* fFlags */
843	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
844	/* fClass. */
845	PDM_DRVREG_CLASS_AUDIO,
846	/* cMaxInstances */
847	~0U,
848	/* cbInstance */
849	sizeof(DRVAUDIOVRDE),
850	/* pfnConstruct */
851	AudioVRDE::drvConstruct,
852	/* pfnDestruct */
853	AudioVRDE::drvDestruct,
854	/* pfnRelocate */
855	NULL,
856	/* pfnIOCtl */
857	NULL,
858	/* pfnPowerOn */
859	NULL,
860	/* pfnReset */
861	NULL,
862	/* pfnSuspend */
863	NULL,
864	/* pfnResume */
865	NULL,
866	/* pfnAttach */
867	AudioVRDE::drvAttach,
868	/* pfnDetach */
869	AudioVRDE::drvDetach,
870	/* pfnPowerOff */
871	NULL,
872	/* pfnSoftReset */
873	NULL,
874	/* u32EndVersion */
875	PDM_DRVREG_VERSION
876	};
877

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source: vbox/trunk/src/VBox/Main/src-client/DrvAudioVRDE.cpp@ 79361

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