Tom qab plaub xyoos ntawm txoj kev loj hlob, thawj qhov kev tso tawm ntawm libcamera project (0.0.1) tau tsim, muab cov software pawg rau kev ua haujlwm nrog cov koob yees duab video, koob yees duab thiab TV tuners hauv Linux, Android thiab ChromeOS, uas txuas ntxiv txhim kho V4L2 API. thiab thaum kawg yuav hloov nws. Txij li thaum lub tsev qiv ntawv API tseem hloov pauv thiab tseem tsis tau muaj kev ruaj ntseg tag nrho, qhov project tau tsim los txog tam sim no yam tsis muaj kev nthuav tawm ib tus neeg siv cov qauv kev txhim kho txuas ntxiv. Hauv kev teb rau qhov xav tau ntawm kev faib khoom kom taug qab API cov kev hloov pauv uas cuam tshuam rau kev sib raug zoo, thiab ua kom yooj yim rau kev xa cov tsev qiv ntawv hauv cov pob, qhov kev txiav txim siab tam sim no tau ua kom ncua sij hawm tsim tawm uas cuam tshuam txog kev hloov pauv ntawm ABI thiab API. Txoj haujlwm code yog sau hauv C ++ thiab muab faib raws li daim ntawv tso cai LGPLv2.1.
Qhov project yog tsim los ntawm cov neeg tsim khoom ntawm multimedia subsystems ntawm Linux ntsiav ua ke nrog qee lub koob yees duab tuam txhab lag luam txhawm rau ua kom qhov xwm txheej zoo nrog Linux kev txhawb nqa rau cov koob yees duab rau smartphones thiab cov cuab yeej embedded uas tau khi rau cov neeg tsav tsheb. API V4L2, twb muaj nyob rau hauv Linux kernel, yog nyob rau hauv ib lub sij hawm tsim los ua hauj lwm nrog ib txwm cais lub web koob yees duab thiab yog tsis zoo yoog raws li tsis ntev los no kev hloov ntawm MCU functionality mus rau lub xub pwg nyom ntawm CPU.
Tsis zoo li cov koob yees duab ib txwm siv, hauv cov duab ua haujlwm thawj zaug tau ua tiav ntawm cov txheej txheem tshwj xeeb tsim rau hauv lub koob yees duab (MCU), hauv cov khoom siv kos, kom txo tau tus nqi, cov haujlwm no tau ua tiav ntawm lub xub pwg ntawm lub ntsiab CPU thiab xav tau tus tsav tsheb nyuaj uas. suav nrog cov uas tsis yog qhib-qhov chaw muaj ntawv tso cai. Raws li ib feem ntawm libcamera project, qhib qhov software proponents thiab hardware manufacturers sim tsim ib tug kev sib haum xeeb daws teeb meem uas, ntawm ib sab, txaus siab rau cov kev xav tau ntawm qhib software developers, thiab ntawm qhov tod tes, tso cai rau kev tiv thaiv kev txawj ntse ntawm lub koob yees duab manufacturers.
Cov pawg muab los ntawm lub tsev qiv ntawv libcamera yog siv tag nrho hauv cov neeg siv qhov chaw. Txhawm rau kom muaj kev sib raug zoo nrog cov software ib puag ncig thiab cov ntawv thov, cov txheej txheem kev sib raug zoo tau muab rau V4L API, Gstreamer thiab Android Lub Koob Yees Duab HAL. Cov khoom ntiag tug tshwj xeeb rau txhua lub koob yees duab rau kev cuam tshuam nrog cov khoom siv yog tsim los ua cov qauv uas khiav hauv cov txheej txheem sib cais thiab cuam tshuam nrog lub tsev qiv ntawv ntawm IPC. Modules tsis muaj kev nkag ncaj qha mus rau lub cuab yeej thiab nkag mus rau cov khoom siv los ntawm qhov nruab nrab API, kev thov los ntawm kev kuaj xyuas, lim thiab txwv tsuas yog nkag mus rau cov haujlwm tsim nyog los tswj lub koob yees duab.
Lub tsev qiv ntawv tseem muab kev nkag mus rau algorithms rau kev ua thiab txhim kho cov duab thiab cov yeeb yaj duab zoo (kev hloov pauv dawb, txo suab nrov, kev ruaj ntseg video, autofocus, kev xaiv raug, thiab lwm yam), uas tuaj yeem txuas rau hauv daim ntawv qhib cov tsev qiv ntawv sab nraud lossis cov tswv. cais modules. API muab kev nkag mus rau cov yam ntxwv xws li kev txiav txim siab ua haujlwm ntawm cov koob yees duab sab nraud thiab built-in uas twb muaj lawm, siv cov cuab yeej siv, tuav lub koob yees duab kev sib txuas thiab kev cuam tshuam cov xwm txheej, tswj cov ntaub ntawv lub koob yees duab ntawm tus kheej theem, thiab synchronizing dluab nrog flash. Nws muaj peev xwm ua haujlwm sib cais nrog ntau lub koob yees duab hauv lub kaw lus thiab teeb tsa tib lub sijhawm ntawm ntau cov kwj video los ntawm ib lub koob yees duab (piv txwv li, ib qho tsis muaj kev daws teeb meem rau kev sib tham video, thiab lwm qhov nrog kev daws teeb meem siab rau kev sau cia rau disk).
Tau qhov twg los: opennet.ru