{"id":113933,"date":"2024-02-28T12:25:58","date_gmt":"2024-02-28T10:25:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kod-podderzhki-kodeka-vp9-v-v4l2-dlya-chipov-hantro-i-rockchip-perepisan-na-rust"},"modified":"2024-02-28T12:25:58","modified_gmt":"2024-02-28T10:25:58","slug":"kod-podderzhki-kodeka-vp9-v-v4l2-dlya-chipov-hantro-i-rockchip-perepisan-na-rust","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/kod-podderzhki-kodeka-vp9-v-v4l2-dlya-chipov-hantro-i-rockchip-perepisan-na-rust","title":{"rendered":"Podpora kodeku VP9 ve V4L2 pro \u010dipy Hantro a Rockchip byla p\u0159evedena do Rustu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Daniel Almeida, kter\u00fd se zab\u00fdv\u00e1 v\u00fdvojem video kodek\u016f ve spole\u010dnosti Collabora, p\u0159edstavila pro diskuzi v\u00fdvoj\u00e1\u0159\u016fm j\u00e1dro Linuxu novou implementaci vrstvy pro vyu\u017eit\u00ed hardwarov\u00fdch video dekod\u00e9r\u016f form\u00e1tu VP9 v subsyst\u00e9mu V4L2, kter\u00fd se pou\u017e\u00edv\u00e1 pro p\u0159\u00edstup k za\u0159\u00edzen\u00edm pro videoz\u00e1znam, jako jsou webkamery a TV tunery. K\u00f3d vrstvy byl kompletn\u011b p\u0159eps\u00e1n v jazyce Rust a je zam\u011b\u0159en na pr\u00e1ci s ovlada\u010di rkvdec a hantro, kter\u00e9 poskytuj\u00ed p\u0159\u00edstup k hardwarov\u00fdm prost\u0159edk\u016fm pro zrychlen\u00ed dek\u00f3dov\u00e1n\u00ed videa dostupn\u00fdm v \u010dipech Rockchip a Hantro. <\/p>\n

K\u00f3d s implementac\u00ed podpory VP9 pro v4l2 zab\u00edr\u00e1 p\u0159ibli\u017en\u011b 2000 \u0159\u00e1dk\u016f. Jako d\u016fvod pro vznik alternativn\u00ed implementace v jazyce Rust se uv\u00e1d\u00ed touha dos\u00e1hnout dodate\u010dn\u00e9 \u00farovn\u011b ochrany d\u00edky vyu\u017eit\u00ed prost\u0159edk\u016f, kter\u00e9 jazyk Rust poskytuje pro bezpe\u010dn\u00e9 manipulace s pam\u011bt\u00ed v k\u00f3du, kter\u00fd obsahuje implementaci dostate\u010dn\u011b slo\u017eit\u00fdch algoritm\u016f a pou\u017e\u00edv\u00e1 se pro zpracov\u00e1n\u00ed dat doru\u010dovan\u00fdch z u\u017eivatelsk\u00e9ho prostoru prost\u0159ednictv\u00edm rozhran\u00ed V4L2. I kdy\u017e implementace v Rustu m\u00e1 prozat\u00edm status v\u00fdvoje experiment\u00e1ln\u00edho prototypu, p\u0159i testov\u00e1n\u00ed paketem Fluster, kter\u00fd hodnot\u00ed shodu dekod\u00e9r\u016f s referen\u010dn\u00edmi specifikacemi, pro verze v C a Rust uk\u00e1zaly identick\u00e9 v\u00fdsledky.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u044d\u043d\u0438\u0435\u043b \u0410\u043b\u043c\u0435\u0439\u0434\u0430 (Daniel Almeida), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435\u043c \u0432\u0438\u0434\u0435\u043e\u043a\u043e\u0434\u0435\u043a\u043e\u0432 \u0432 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Collabora, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u0434\u043b\u044f \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438 \u044f\u0434\u0440\u0430 Linux \u043d\u043e\u0432\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u044b\u0445 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u043e\u0432 \u0432\u0438\u0434\u0435\u043e \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 VP9 \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 V4L2, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430\u043c \u0432\u0438\u0434\u0435\u043e\u0437\u0430\u0445\u0432\u0430\u0442\u0430, \u0442\u0430\u043a\u0438\u043c \u043a\u0430\u043a web-\u043a\u0430\u043c\u0435\u0440\u044b \u0438 TV-\u0442\u044e\u043d\u0435\u0440\u044b. \u041a\u043e\u0434 \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Rust \u0438 \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d \u043d\u0430 \u0440\u0430\u0431\u043e\u0442\u0443 \u0441 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430\u043c\u0438 rkvdec […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-113933","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Podpora kodeku VP9 ve V4L2 pro \u010dipy Hantro a Rockchip byla p\u0159evedena do Rustu | ProHoster","description":"Daniel Almeida, kter\u00fd se zab\u00fdv\u00e1 v\u00fdvojem video kodek\u016f ve spole\u010dnosti Collabora, p\u0159edstavila pro diskuzi v\u00fdvoj\u00e1\u0159\u016fm j\u00e1dro Linuxu novou implementaci vrstvy pro vyu\u017eit\u00ed hardwarov\u00fdch dekod\u00e9r\u016f.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/kod-podderzhki-kodeka-vp9-v-v4l2-dlya-chipov-hantro-i-rockchip-perepisan-na-rust","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041a\u043e\u0434 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u043a\u043e\u0434\u0435\u043a\u0430 VP9 \u0432 V4L2 \u0434\u043b\u044f \u0447\u0438\u043f\u043e\u0432 Hantro \u0438 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