UsbWebcamInterface.cpp@ 99844

Last change on this file since 99844 was 98103, checked in by vboxsync, 2 years ago
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1	/* $Id: UsbWebcamInterface.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* UsbWebcamInterface - Driver Interface for USB Webcam emulation.
4	*/
5
6	/*
7	* Copyright (C) 2011-2023 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	#define LOG_GROUP LOG_GROUP_USB_WEBCAM
30	#include "LoggingNew.h"
31
32	#include "UsbWebcamInterface.h"
33	#include "ConsoleImpl.h"
34	#include "ConsoleVRDPServer.h"
35	#include "EmulatedUSBImpl.h"
36
37	#include <VBox/vmm/pdmwebcaminfs.h>
38	#include <VBox/err.h>
39
40
41	typedef struct EMWEBCAMREMOTE
42	{
43	EmWebcam *pEmWebcam;
44
45	VRDEVIDEOINDEVICEHANDLE deviceHandle; /* The remote identifier. */
46
47	/* Received from the remote client. */
48	uint32_t u32Version; /* VRDE_VIDEOIN_NEGOTIATE_VERSION */
49	uint32_t fu32Capabilities; /* VRDE_VIDEOIN_NEGOTIATE_CAP_* */
50	VRDEVIDEOINDEVICEDESC *pDeviceDesc;
51	uint32_t cbDeviceDesc;
52
53	/* The device identifier for the PDM device.*/
54	uint64_t u64DeviceId;
55	} EMWEBCAMREMOTE;
56
57	typedef struct EMWEBCAMDRV
58	{
59	EMWEBCAMREMOTE *pRemote;
60	PPDMIWEBCAMDEV pIWebcamUp;
61	PDMIWEBCAMDRV IWebcamDrv;
62	} EMWEBCAMDRV, *PEMWEBCAMDRV;
63
64	typedef struct EMWEBCAMREQCTX
65	{
66	EMWEBCAMREMOTE *pRemote;
67	void *pvUser;
68	} EMWEBCAMREQCTX;
69
70
71	static DECLCALLBACK(void) drvEmWebcamReady(PPDMIWEBCAMDRV pInterface,
72	bool fReady)
73	{
74	NOREF(fReady);
75
76	PEMWEBCAMDRV pThis = RT_FROM_MEMBER(pInterface, EMWEBCAMDRV, IWebcamDrv);
77	EMWEBCAMREMOTE *pRemote = pThis->pRemote;
78
79	LogFlowFunc(("pRemote:%p\n", pThis->pRemote));
80
81	if (pThis->pIWebcamUp)
82	{
83	pThis->pIWebcamUp->pfnAttached(pThis->pIWebcamUp,
84	pRemote->u64DeviceId,
85	pRemote->pDeviceDesc,
86	pRemote->cbDeviceDesc,
87	pRemote->u32Version,
88	pRemote->fu32Capabilities);
89	}
90	}
91
92	static DECLCALLBACK(int) drvEmWebcamControl(PPDMIWEBCAMDRV pInterface,
93	void *pvUser,
94	uint64_t u64DeviceId,
95	const struct VRDEVIDEOINCTRLHDR *pCtrl,
96	uint32_t cbCtrl)
97	{
98	PEMWEBCAMDRV pThis = RT_FROM_MEMBER(pInterface, EMWEBCAMDRV, IWebcamDrv);
99	EMWEBCAMREMOTE *pRemote = pThis->pRemote;
100
101	LogFlowFunc(("pRemote:%p, u64DeviceId %lld\n", pRemote, u64DeviceId));
102
103	return pRemote->pEmWebcam->SendControl(pThis, pvUser, u64DeviceId, pCtrl, cbCtrl);
104	}
105
106
107	EmWebcam::EmWebcam(ConsoleVRDPServer *pServer)
108	:
109	mParent(pServer),
110	mpDrv(NULL),
111	mpRemote(NULL),
112	mu64DeviceIdSrc(0)
113	{
114	}
115
116	EmWebcam::~EmWebcam()
117	{
118	if (mpDrv)
119	{
120	mpDrv->pRemote = NULL;
121	mpDrv = NULL;
122	}
123	}
124
125	void EmWebcam::EmWebcamConstruct(EMWEBCAMDRV *pDrv)
126	{
127	AssertReturnVoid(mpDrv == NULL);
128
129	mpDrv = pDrv;
130	}
131
132	void EmWebcam::EmWebcamDestruct(EMWEBCAMDRV *pDrv)
133	{
134	AssertReturnVoid(pDrv == mpDrv);
135
136	if (mpRemote)
137	{
138	mParent->VideoInDeviceDetach(&mpRemote->deviceHandle);
139
140	RTMemFree(mpRemote->pDeviceDesc);
141	mpRemote->pDeviceDesc = NULL;
142	mpRemote->cbDeviceDesc = 0;
143
144	RTMemFree(mpRemote);
145	mpRemote = NULL;
146	}
147
148	mpDrv->pRemote = NULL;
149	mpDrv = NULL;
150	}
151
152	void EmWebcam::EmWebcamCbNotify(uint32_t u32Id, const void *pvData, uint32_t cbData)
153	{
154	int vrc = VINF_SUCCESS;
155
156	switch (u32Id)
157	{
158	case VRDE_VIDEOIN_NOTIFY_ID_ATTACH:
159	{
160	VRDEVIDEOINNOTIFYATTACH p = (VRDEVIDEOINNOTIFYATTACH )pvData;
161
162	/* Older versions did not report u32Version and fu32Capabilities. */
163	uint32_t u32Version = 1;
164	uint32_t fu32Capabilities = VRDE_VIDEOIN_NEGOTIATE_CAP_VOID;
165
166	if (cbData >= RT_UOFFSETOF(VRDEVIDEOINNOTIFYATTACH, u32Version) + sizeof(p->u32Version))
167	u32Version = p->u32Version;
168
169	if (cbData >= RT_UOFFSETOF(VRDEVIDEOINNOTIFYATTACH, fu32Capabilities) + sizeof(p->fu32Capabilities))
170	fu32Capabilities = p->fu32Capabilities;
171
172	LogFlowFunc(("ATTACH[%d,%d] version %d, caps 0x%08X\n",
173	p->deviceHandle.u32ClientId, p->deviceHandle.u32DeviceId,
174	u32Version, fu32Capabilities));
175
176	/* Currently only one device is allowed. */
177	if (mpRemote)
178	{
179	AssertFailed();
180	vrc = VERR_NOT_SUPPORTED;
181	break;
182	}
183
184	EMWEBCAMREMOTE pRemote = (EMWEBCAMREMOTE )RTMemAllocZ(sizeof(EMWEBCAMREMOTE));
185	if (pRemote == NULL)
186	{
187	vrc = VERR_NO_MEMORY;
188	break;
189	}
190
191	pRemote->pEmWebcam = this;
192	pRemote->deviceHandle = p->deviceHandle;
193	pRemote->u32Version = u32Version;
194	pRemote->fu32Capabilities = fu32Capabilities;
195	pRemote->pDeviceDesc = NULL;
196	pRemote->cbDeviceDesc = 0;
197	pRemote->u64DeviceId = ASMAtomicIncU64(&mu64DeviceIdSrc);
198
199	mpRemote = pRemote;
200
201	/* Tell the server that this webcam will be used. */
202	vrc = mParent->VideoInDeviceAttach(&mpRemote->deviceHandle, mpRemote);
203	if (RT_FAILURE(vrc))
204	{
205	RTMemFree(mpRemote);
206	mpRemote = NULL;
207	break;
208	}
209
210	/* Get the device description. */
211	vrc = mParent->VideoInGetDeviceDesc(NULL, &mpRemote->deviceHandle);
212
213	if (RT_FAILURE(vrc))
214	{
215	mParent->VideoInDeviceDetach(&mpRemote->deviceHandle);
216	RTMemFree(mpRemote);
217	mpRemote = NULL;
218	break;
219	}
220
221	LogFlowFunc(("sent DeviceDesc\n"));
222	} break;
223
224	case VRDE_VIDEOIN_NOTIFY_ID_DETACH:
225	{
226	VRDEVIDEOINNOTIFYDETACH p = (VRDEVIDEOINNOTIFYDETACH )pvData; NOREF(p);
227	Assert(cbData == sizeof(VRDEVIDEOINNOTIFYDETACH));
228
229	LogFlowFunc(("DETACH[%d,%d]\n", p->deviceHandle.u32ClientId, p->deviceHandle.u32DeviceId));
230
231	/** @todo */
232	if (mpRemote)
233	{
234	if (mpDrv && mpDrv->pIWebcamUp)
235	mpDrv->pIWebcamUp->pfnDetached(mpDrv->pIWebcamUp, mpRemote->u64DeviceId);
236	/* mpRemote is deallocated in EmWebcamDestruct */
237	}
238	} break;
239
240	default:
241	vrc = VERR_INVALID_PARAMETER;
242	AssertFailed();
243	break;
244	}
245
246	return;
247	}
248
249	void EmWebcam::EmWebcamCbDeviceDesc(int rcRequest, void pDeviceCtx, void pvUser,
250	const VRDEVIDEOINDEVICEDESC *pDeviceDesc, uint32_t cbDeviceDesc)
251	{
252	RT_NOREF(pvUser);
253	EMWEBCAMREMOTE pRemote = (EMWEBCAMREMOTE )pDeviceCtx;
254	Assert(pRemote == mpRemote);
255
256	LogFlowFunc(("mpDrv %p, rcRequest %Rrc %p %p %p %d\n",
257	mpDrv, rcRequest, pDeviceCtx, pvUser, pDeviceDesc, cbDeviceDesc));
258
259	if (RT_SUCCESS(rcRequest))
260	{
261	/* Save device description. */
262	Assert(pRemote->pDeviceDesc == NULL);
263	pRemote->pDeviceDesc = (VRDEVIDEOINDEVICEDESC *)RTMemDup(pDeviceDesc, cbDeviceDesc);
264	pRemote->cbDeviceDesc = cbDeviceDesc;
265
266	/* Try to attach the device. */
267	EmulatedUSB *pEUSB = mParent->getConsole()->i_getEmulatedUSB();
268	pEUSB->i_webcamAttachInternal("", "", "EmWebcam", pRemote);
269	}
270	else
271	{
272	mParent->VideoInDeviceDetach(&mpRemote->deviceHandle);
273	RTMemFree(mpRemote);
274	mpRemote = NULL;
275	}
276	}
277
278	void EmWebcam::EmWebcamCbControl(int rcRequest, void pDeviceCtx, void pvUser,
279	const VRDEVIDEOINCTRLHDR *pControl, uint32_t cbControl)
280	{
281	RT_NOREF(rcRequest);
282	EMWEBCAMREMOTE pRemote = (EMWEBCAMREMOTE )pDeviceCtx; NOREF(pRemote);
283	Assert(pRemote == mpRemote);
284
285	LogFlowFunc(("rcRequest %Rrc %p %p %p %d\n",
286	rcRequest, pDeviceCtx, pvUser, pControl, cbControl));
287
288	bool fResponse = (pvUser != NULL);
289
290	if (mpDrv && mpDrv->pIWebcamUp)
291	{
292	mpDrv->pIWebcamUp->pfnControl(mpDrv->pIWebcamUp,
293	fResponse,
294	pvUser,
295	mpRemote->u64DeviceId,
296	pControl,
297	cbControl);
298	}
299
300	RTMemFree(pvUser);
301	}
302
303	void EmWebcam::EmWebcamCbFrame(int rcRequest, void *pDeviceCtx,
304	const VRDEVIDEOINPAYLOADHDR *pFrame, uint32_t cbFrame)
305	{
306	RT_NOREF(rcRequest, pDeviceCtx);
307	LogFlowFunc(("rcRequest %Rrc %p %p %d\n",
308	rcRequest, pDeviceCtx, pFrame, cbFrame));
309
310	if (mpDrv && mpDrv->pIWebcamUp)
311	{
312	if ( cbFrame >= sizeof(VRDEVIDEOINPAYLOADHDR)
313	&& cbFrame >= pFrame->u8HeaderLength)
314	{
315	uint32_t cbImage = cbFrame - pFrame->u8HeaderLength;
316	const uint8_t pu8Image = cbImage > 0? (const uint8_t )pFrame + pFrame->u8HeaderLength: NULL;
317
318	mpDrv->pIWebcamUp->pfnFrame(mpDrv->pIWebcamUp,
319	mpRemote->u64DeviceId,
320	pFrame,
321	pFrame->u8HeaderLength,
322	pu8Image,
323	cbImage);
324	}
325	}
326	}
327
328	int EmWebcam::SendControl(EMWEBCAMDRV pDrv, void pvUser, uint64_t u64DeviceId,
329	const VRDEVIDEOINCTRLHDR *pControl, uint32_t cbControl)
330	{
331	AssertReturn(pDrv == mpDrv, VERR_NOT_SUPPORTED);
332
333	int vrc = VINF_SUCCESS;
334
335	EMWEBCAMREQCTX *pCtx = NULL;
336
337	/* Verify that there is a remote device. */
338	if ( !mpRemote
339	\|\| mpRemote->u64DeviceId != u64DeviceId)
340	{
341	vrc = VERR_NOT_SUPPORTED;
342	}
343
344	if (RT_SUCCESS(vrc))
345	{
346	pCtx = (EMWEBCAMREQCTX *)RTMemAlloc(sizeof(EMWEBCAMREQCTX));
347	if (!pCtx)
348	{
349	vrc = VERR_NO_MEMORY;
350	}
351	}
352
353	if (RT_SUCCESS(vrc))
354	{
355	pCtx->pRemote = mpRemote;
356	pCtx->pvUser = pvUser;
357
358	vrc = mParent->VideoInControl(pCtx, &mpRemote->deviceHandle, pControl, cbControl);
359
360	if (RT_FAILURE(vrc))
361	{
362	RTMemFree(pCtx);
363	}
364	}
365
366	return vrc;
367	}
368
369	/* static / DECLCALLBACK(void ) EmWebcam::drvQueryInterface(PPDMIBASE pInterface, const char *pszIID)
370	{
371	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
372	PEMWEBCAMDRV pThis = PDMINS_2_DATA(pDrvIns, PEMWEBCAMDRV);
373
374	LogFlowFunc(("pszIID:%s\n", pszIID));
375
376	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
377	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIWEBCAMDRV, &pThis->IWebcamDrv);
378	return NULL;
379	}
380
381	/* static */ DECLCALLBACK(void) EmWebcam::drvDestruct(PPDMDRVINS pDrvIns)
382	{
383	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
384	PEMWEBCAMDRV pThis = PDMINS_2_DATA(pDrvIns, PEMWEBCAMDRV);
385	EMWEBCAMREMOTE *pRemote = pThis->pRemote;
386
387	LogFlowFunc(("iInstance %d, pRemote %p, pIWebcamUp %p\n",
388	pDrvIns->iInstance, pRemote, pThis->pIWebcamUp));
389
390	if (pRemote && pRemote->pEmWebcam)
391	{
392	pRemote->pEmWebcam->EmWebcamDestruct(pThis);
393	}
394	}
395
396	/* static */ DECLCALLBACK(int) EmWebcam::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
397	{
398	RT_NOREF(fFlags);
399	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
400	LogFlowFunc(("iInstance:%d, pCfg:%p, fFlags:%x\n", pDrvIns->iInstance, pCfg, fFlags));
401
402	PEMWEBCAMDRV pThis = PDMINS_2_DATA(pDrvIns, PEMWEBCAMDRV);
403
404	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
405	("Configuration error: Not possible to attach anything to this driver!\n"),
406	VERR_PDM_DRVINS_NO_ATTACH);
407
408	/* Check early that there is a device. No need to init anything if there is no device. */
409	pThis->pIWebcamUp = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIWEBCAMDEV);
410	if (pThis->pIWebcamUp == NULL)
411	{
412	LogRel(("USBWEBCAM: Emulated webcam device does not exist.\n"));
413	return VERR_PDM_MISSING_INTERFACE;
414	}
415
416	char *pszId = NULL;
417	int vrc = pDrvIns->pHlpR3->pfnCFGMQueryStringAlloc(pCfg, "Id", &pszId);
418	if (RT_SUCCESS(vrc))
419	{
420	RTUUID UuidEmulatedUsbIf;
421	vrc = RTUuidFromStr(&UuidEmulatedUsbIf, EMULATEDUSBIF_OID); AssertRC(vrc);
422
423	PEMULATEDUSBIF pEmulatedUsbIf = (PEMULATEDUSBIF)PDMDrvHlpQueryGenericUserObject(pDrvIns, &UuidEmulatedUsbIf);
424	AssertPtrReturn(pEmulatedUsbIf, VERR_INVALID_PARAMETER);
425
426	vrc = pEmulatedUsbIf->pfnQueryEmulatedUsbDataById(pEmulatedUsbIf->pvUser, pszId,
427	NULL /ppvEmUsbCb/, NULL /ppvEmUsbCbData/, (void **)&pThis->pRemote);
428	pDrvIns->pHlpR3->pfnMMHeapFree(pDrvIns, pszId);
429	AssertRCReturn(vrc, vrc);
430	}
431	else
432	return vrc;
433
434	/* Everything ok. Initialize. */
435	pThis->pRemote->pEmWebcam->EmWebcamConstruct(pThis);
436
437	pDrvIns->IBase.pfnQueryInterface = drvQueryInterface;
438
439	pThis->IWebcamDrv.pfnReady = drvEmWebcamReady;
440	pThis->IWebcamDrv.pfnControl = drvEmWebcamControl;
441
442	return VINF_SUCCESS;
443	}
444
445	/* static */ const PDMDRVREG EmWebcam::DrvReg =
446	{
447	/* u32Version */
448	PDM_DRVREG_VERSION,
449	/* szName[32] */
450	"EmWebcam",
451	/* szRCMod[32] */
452	"",
453	/* szR0Mod[32] */
454	"",
455	/* pszDescription */
456	"Main Driver communicating with VRDE",
457	/* fFlags */
458	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
459	/* fClass */
460	PDM_DRVREG_CLASS_USB,
461	/* cMaxInstances */
462	1,
463	/* cbInstance */
464	sizeof(EMWEBCAMDRV),
465	/* pfnConstruct */
466	EmWebcam::drvConstruct,
467	/* pfnDestruct */
468	EmWebcam::drvDestruct,
469	/* pfnRelocate */
470	NULL,
471	/* pfnIOCtl */
472	NULL,
473	/* pfnPowerOn */
474	NULL,
475	/* pfnReset */
476	NULL,
477	/* pfnSuspend */
478	NULL,
479	/* pfnResume */
480	NULL,
481	/* pfnAttach */
482	NULL,
483	/* pfnDetach */
484	NULL,
485	/* pfnPowerOff */
486	NULL,
487	/* pfnSoftReset */
488	NULL,
489	/* u32VersionEnd */
490	PDM_DRVREG_VERSION
491	};
492	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/src-client/UsbWebcamInterface.cpp@ 99844

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