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feat: support render to offscreen canvas

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三三 2024-06-18 12:20:46 +08:00 • committed by Simon Chan
parent b62419fa3e
commit 5ca67b8ada
4 changed files with 15 additions and 6 deletions
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15
libraries/scrcpy-decoder-webcodecs/src/video/decoder.ts
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@ -36,7 +36,7 @@ export class WebCodecsVideoDecoder implements ScrcpyVideoDecoder {
return this.#writable;
}
#canvas: HTMLCanvasElement;
#canvas: HTMLCanvasElement | OffscreenCanvas;
get renderer() {
return this.#canvas;
}
@ -68,11 +68,20 @@ export class WebCodecsVideoDecoder implements ScrcpyVideoDecoder {
* @param enableCapture
* Whether to allow capturing the canvas content using APIs like `readPixels` and `toDataURL`.
* Enable this option may reduce performance.
* @param canvas Optional render target cavas element or offscreen canvas
*/
constructor(codec: ScrcpyVideoCodecId, enableCapture: boolean) {
constructor(codec: ScrcpyVideoCodecId, enableCapture: boolean, canvas?: HTMLCanvasElement | OffscreenCanvas) {
this.#codec = codec;
this.#canvas = document.createElement("canvas");
if (canvas) {
this.#canvas = canvas
} else if (typeof document !== 'undefined') {
this.#canvas = document.createElement("canvas");
} else if (typeof OffscreenCanvas !== 'undefined') {
this.#canvas = new OffscreenCanvas(0, 0);
} else {
throw new Error('no canvas input found nor any canvas can be created');
}
try {
this.#renderer = new WebGLFrameRenderer(