Baseline 2024
Newly available
copyTo() 㯠VideoFrame ã¤ã³ã¿ã¼ãã§ã¤ã¹ã®ã¡ã½ããã§ããã® VideoFrame ã®å
容ã ArrayBuffer ã¸ã³ãã¼ãã¾ãã
copyTo(destination)
copyTo(destination, options)
destination
ã³ãã¼å
ã¨ãªã ArrayBuffer, TypedArray, DataView ã®ããããã§ãã
options çç¥å¯
以ä¸ã®ãã®ãå«ããªãã¸ã§ã¯ãã§ãã
rect çç¥å¯
VideoFrame ããã³ãã¼ããããã¯ã»ã«ã®é·æ¹å½¢ãæªæå®ã®å ´åã visibleRect ã使ç¨ãã¾ããããã¯ä»¥ä¸ã®ãã®ãå«ãè¾æ¸ãªãã¸ã§ã¯ãã®å½¢ãæ¡ãã¾ãã
x: X 座æ¨ã§ããy: Y 座æ¨ã§ããwidth: ãã¬ã¼ã ã®å¹
ã§ããheight: ãã¬ã¼ã ã®é«ãã§ããlayout çç¥å¯
VideoFrame å
ã®åãã¬ã¼ã³ã«ã¤ãã¦ã以ä¸ã®å¤ãæ ¼ç´ãããªã¹ãããã¬ã¼ã³ã¯éãªã£ã¦ã¯ããã¾ãããæªæå®ã®å ´åããã¬ã¼ã³ã¯å¯ã«è©°ãããã¾ãã
offset
æ´æ°ã§ãæå®ããããã¬ã¼ã³ãå§ã¾ããã¤ãåä½ã®ãªãã»ããã表ãã¾ãã
stride
æ´æ°ã§ããã¬ã¼ã³ã®åè¡ã使ç¨ãããã¤ãæ°ï¼ããã£ã³ã°ãå«ãï¼ã表ãã¾ãã ãã¬ã¼ã³ãéãªããã¨ã¯ããã¾ããã layout ãæå®ããªãå ´åããã¬ã¼ã³ã¯ãã£ããã¨è©°ãè¾¼ã¾ãã¾ãã
ã³ãã¼ãå®äºããã¨ãã«ãã³ãã¼ã®ã¬ã¤ã¢ã¦ãã«è§£æ±ºãã Promiseã
次ã®ä¾ã¯ videoFrame ã®å
容å
¨ä½ãã³ãã¼ãã¦ãã¾ãã
let buffer = new Uint8Array(videoFrame.allocationSize());
let layout = await videoFrame.copyTo(buffer);
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