/********** Init-time **********/
NvSciSyncModule nvscisyncModule;
NvSciError nverr;
NvSciSyncAttrList nvscisyncattr_w;
NvSciSyncAttrList nvscisyncattr_s;
NvSciSyncAttrList nvscisyncattr_unreconciled_h[2];
NvSciSyncAttrList nvscisyncattr_reconciled;
NvSciSyncAttrList nvscisyncattr_conflict;
NvSciSyncFence eofnvscisyncfence = NV_SCI_SYNC_FENCE_INITIALIZER;
NvSciSyncObj nvscisyncEOF, nvscisyncpre;
nvmstatus = NvMedia2DCreate(&nvm2dhdl, &nvm2dattr);
nverr = NvSciSyncModuleOpen(&nvscisyncModule);
/* NvMedia 2D as signaler */
nverr = NvSciSyncAttrListCreate(nvscisyncModule, &nvscisyncattr_s);
nvmstatus = NvMedia2DFillNvSciSyncAttrList(nvm2dhdl,
nvscisyncattr_s,
NVMEDIA_SIGNALER);
nvscisyncattr_unreconciled_h[0] = nvscisyncattr_s;
nvscisyncattr_unreconciled_h[1] = get attr list from the appropriate waiter;
nverr = NvSciSyncAttrListReconcile(nvscisyncattr_unreconciled_h,
2,
&nvscisyncattr_reconciled,
&nvscisyncattr_conflict);
nverr = NvSciSyncObjAlloc(nvscisyncattr_reconciled, &nvscisyncEOF);
/* NvMedia 2D as waiter */
nverr = NvSciSyncAttrListCreate(&nvscisyncattr_w);
nvmstatus = NvMedia2DFillNvSciSyncAttrList(nvm2dhdl,
nvscisyncattr_w,
NVMEDIA_WAITER);
/*
* If the signaler is also in the same process as the NvMedia 2D waiter, then
* NvSciSyncAttrListReconcileAndObjAlloc or NvSciSyncAttrListReconcile and
* NvSciSyncObjAlloc API pair has/have to be used to allocate the "nvscisyncpre"
* NvSciSyncObject.
*
* If the signaler is in a different process/VM than the NvMedia 2D Waiter, then
* NvSciSyncAttrList export/import APIs and NvSciSyncObjIpc Export/Import APIs
* have to be used to allocate a NvSciSyncObject on signaler and waiter sides.
* The "nvscisyncpre" NvSciSyncObject is the imported NvSciSyncObject on the
* waiter side.
*
* All the NvSciSyncObjects (NvSciSyncObjects associated with PreFences,
* EOFFence) which will be used by NvMedia2D must be registered upfront.
*/
/* Registration of NvSciSync Objects */
nvmstatus = NvMedia2DRegisterNvSciSyncObj(nvm2dhdl,
NVMEDIA_EOFSYNCOBJ,
nvscisyncEOF);
/*
* Register all the NvSciSync objects which will be used to generate prefences
* for NvMedia2DCompose operation. "nvscisyncpre" is one such Pre NvSciSync
* object in this example.
*/
nvmstatus = NvMedia2DRegisterNvSciSyncObj(nvm2dhdl,
NVMEDIA_PRESYNCOBJ,
nvscisyncpre);
/********** Run-time **********/
nvmstatus = NvMedia2DSetNvSciSyncObjforEOF(nvm2dhdl, nvm2dparams, nvscisyncEOF);
/*
* Get an NvSciSyncFence from somewhere (maybe a eofnvscisyncfence of some other
* engine operation) which neeeds to be inserted as prefence for the
* NvMedia2DCompose operation. "prenvscisyncfence" is one such NvSciSyncFence in
* this example.
*/
nvmstatus = NvMedia2DInsertPreNvSciSyncFence(nvm2dhdl,
nvm2dparams,
prenvscisyncfence);
/*
* Set other parameters required for the NvMedia2DCompose operation to
* "nvm2dparams" before submitting the operation.
*/
nvmstatus = NvMedia2DCompose(nvm2dhdl, nvm2dparams, &nvm2dresult);
nvmstatus = NvMedia2DGetEOFNvSciSyncFence(nvm2dhdl,
nvm2dresult,
&eofnvscisyncfence);
/*
* "eofnvscisyncfence" may be used as prefence for some other engine operation
* or application can decide to wait on CPU until its expiry using
* NvSciSyncFenceWait API.
*/
/********** Deinit-time **********/
nvmstatus = NvMedia2DUnregisterNvSciSyncObj(nvm2dhdl, nvscisyncEOF);
nvmstatus = NvMedia2DUnregisterNvSciSyncObj(nvm2dhdl, nvscisyncpre);
NvSciSyncAttrListFree(nvscisyncattr_w);
NvSciSyncAttrListFree(nvscisyncattr_s);
NvSciSyncAttrListFree(nvscisyncattr_reconciled);
NvSciSyncObjFree(nvscisyncEOF);
NvSciSyncObjFree(nvscisyncpre);
NvSciSyncModuleClose(nvscisyncModule);
