UsbWebcamInterface.cpp revision 010ad423d45c61ef874fa1602d46459a798b54d2
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync * UsbWebcamInterface - Driver Interface for USB Webcam emulation.
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync * Copyright (C) 2011-2013 Oracle Corporation
010ad423d45c61ef874fa1602d46459a798b54d2vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
010ad423d45c61ef874fa1602d46459a798b54d2vboxsync * available from http://www.virtualbox.org. This file is free software;
010ad423d45c61ef874fa1602d46459a798b54d2vboxsync * you can redistribute it and/or modify it under the terms of the GNU
010ad423d45c61ef874fa1602d46459a798b54d2vboxsync * General Public License (GPL) as published by the Free Software
010ad423d45c61ef874fa1602d46459a798b54d2vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
010ad423d45c61ef874fa1602d46459a798b54d2vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
010ad423d45c61ef874fa1602d46459a798b54d2vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* The remote identifier. */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* The device identifier for the PDM device.*/
d0eec04539061d14a7e51f492aea90fa5394615fvboxsyncstatic DECLCALLBACK(int) drvEmWebcamControl(PPDMIWEBCAMDOWN pInterface,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync PEMWEBCAMDRV pThis = RT_FROM_MEMBER(pInterface, EMWEBCAMDRV, IWebcamDown);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync return pThis->pEmWebcam->SendControl(pThis, pvUser, u64DeviceId, (const VRDEVIDEOINCTRLHDR *)pCtrl, cbCtrl);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync mParent->consoleVRDPServer()->VideoInDeviceDetach(&mpRemote->deviceHandle);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsyncvoid EmWebcam::EmWebcamCbNotify(uint32_t u32Id, const void *pvData, uint32_t cbData)
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync VRDEVIDEOINNOTIFYATTACH *p = (VRDEVIDEOINNOTIFYATTACH *)pvData;
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync LogFlowFunc(("ATTACH[%d,%d]\n", p->deviceHandle.u32ClientId, p->deviceHandle.u32DeviceId));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* Currently only one device is allowed. */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync EMWEBCAMREMOTE *pRemote = (EMWEBCAMREMOTE *)RTMemAllocZ(sizeof(EMWEBCAMREMOTE));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync pRemote->u64DeviceId = ASMAtomicIncU64(&mu64DeviceIdSrc);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* Tell the server that this webcam will be used. */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync rc = mParent->consoleVRDPServer()->VideoInDeviceAttach(&mpRemote->deviceHandle, mpRemote);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* Get the device description. */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync rc = mParent->consoleVRDPServer()->VideoInGetDeviceDesc(NULL, &mpRemote->deviceHandle);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync mParent->consoleVRDPServer()->VideoInDeviceDetach(&mpRemote->deviceHandle);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync VRDEVIDEOINNOTIFYDETACH *p = (VRDEVIDEOINNOTIFYDETACH *)pvData;
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync LogFlowFunc(("DETACH[%d,%d]\n", p->deviceHandle.u32ClientId, p->deviceHandle.u32DeviceId));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* @todo */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync mpDrv->pIWebcamUp->pfnWebcamUpDetached(mpDrv->pIWebcamUp,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* No need to tell the server by calling VideoInDeviceDetach because the server is telling. */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsyncvoid EmWebcam::EmWebcamCbDeviceDesc(int rcRequest, void *pDeviceCtx, void *pvUser,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync const VRDEVIDEOINDEVICEDESC *pDeviceDesc, uint32_t cbDeviceDesc)
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync EMWEBCAMREMOTE *pRemote = (EMWEBCAMREMOTE *)pDeviceCtx;
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync rcRequest, pDeviceCtx, pvUser, pDeviceDesc, cbDeviceDesc));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync mpDrv->pIWebcamUp->pfnWebcamUpAttached(mpDrv->pIWebcamUp,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync mParent->consoleVRDPServer()->VideoInDeviceDetach(&mpRemote->deviceHandle);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsyncvoid EmWebcam::EmWebcamCbControl(int rcRequest, void *pDeviceCtx, void *pvUser,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync const VRDEVIDEOINCTRLHDR *pControl, uint32_t cbControl)
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync EMWEBCAMREMOTE *pRemote = (EMWEBCAMREMOTE *)pDeviceCtx;
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync rcRequest, pDeviceCtx, pvUser, pControl, cbControl));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync mpDrv->pIWebcamUp->pfnWebcamUpControl(mpDrv->pIWebcamUp,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsyncvoid EmWebcam::EmWebcamCbFrame(int rcRequest, void *pDeviceCtx,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync const VRDEVIDEOINPAYLOADHDR *pFrame, uint32_t cbFrame)
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync mpDrv->pIWebcamUp->pfnWebcamUpFrame(mpDrv->pIWebcamUp,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsyncint EmWebcam::SendControl(EMWEBCAMDRV *pDrv, void *pvUser, uint64_t u64DeviceId,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync const VRDEVIDEOINCTRLHDR *pControl, uint32_t cbControl)
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* Verify that there is a remote device. */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync pCtx = (EMWEBCAMREQCTX *)RTMemAlloc(sizeof(EMWEBCAMREQCTX));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync rc = mParent->consoleVRDPServer()->VideoInControl(pCtx, &mpRemote->deviceHandle, pControl, cbControl);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync/* static */ DECLCALLBACK(void *) EmWebcam::drvQueryInterface(PPDMIBASE pInterface, const char *pszIID)
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync LogFlowFunc(("pInterface:%p, pszIID:%s\n", __FUNCTION__, pInterface, pszIID));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync PEMWEBCAMDRV pThis = PDMINS_2_DATA(pDrvIns, PEMWEBCAMDRV);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync PDMIBASE_RETURN_INTERFACE(pszIID, PDMIWEBCAMDOWN, &pThis->IWebcamDown);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync/* static */ DECLCALLBACK(int) EmWebcam::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync LogFlow(("%s: iInstance/#d, pCfg:%p, fFlags:%x\n", __FUNCTION__, pDrvIns->iInstance, pCfg, fFlags));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync PEMWEBCAMDRV pThis = PDMINS_2_DATA(pDrvIns, PEMWEBCAMDRV);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync ("Configuration error: Not possible to attach anything to this driver!\n"),
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync AssertMsgRCReturn(rc, ("Configuration error: No/bad \"Object\" value! rc=%Rrc\n", rc), rc);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync pDrvIns->IBase.pfnQueryInterface = drvQueryInterface;
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync pThis->IWebcamDown.pfnWebcamDownControl = drvEmWebcamControl;
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync pThis->pIWebcamUp = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIWEBCAMUP);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync AssertReturn(pThis->pIWebcamUp, VERR_PDM_MISSING_INTERFACE);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync/* static */ DECLCALLBACK(void) EmWebcam::drvDestruct(PPDMDRVINS pDrvIns)
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync LogFlow(("%s: iInstance/#d\n", __FUNCTION__, pDrvIns->iInstance));
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync PEMWEBCAMDRV pThis = PDMINS_2_DATA(pDrvIns, PEMWEBCAMDRV);
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* u32Version */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* szName[32] */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync "EmWebcam",
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* szRCMod[32] */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* szR0Mod[32] */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pszDescription */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync "Main Driver communicating with VRDE",
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* fFlags */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* fClass */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* cMaxInstances */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* cbInstance */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnConstruct */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnDestruct */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnRelocate */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnIOCtl */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnPowerOn */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnReset */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnSuspend */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnResume */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnAttach */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnDetach */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnPowerOff */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* pfnSoftReset */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync /* u32VersionEnd */
d0eec04539061d14a7e51f492aea90fa5394615fvboxsync/* vi: set tabstop=4 shiftwidth=4 expandtab: */