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make rendering abstract (so that a webgl renderer will actually be possible)

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This commit is contained in:
Lily Tsuru 2024-09-09 06:19:20 -04:00
parent b44a55f10d
commit a6734667de
3 changed files with 167 additions and 156 deletions
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9
client/src/streamplayer/worker/canvas_2d_renderer.ts
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@ -1,10 +1,11 @@
// shared interface to allow gl later :)
export class Canvas2DRenderer {
private canvas: OffscreenCanvas;
import { CanvasRenderer } from "./canvas_renderer";
// renderer for the streamplayer that uses the canvas2d apis
export class Canvas2DRenderer extends CanvasRenderer {
private ctx: OffscreenCanvasRenderingContext2D;
constructor(c: OffscreenCanvas) {
this.canvas = c;
super(c);
this.ctx = this.canvas.getContext("2d")!;
}

10
client/src/streamplayer/worker/canvas_renderer.ts Normal file
View file

@ -0,0 +1,10 @@
// mixin thing
export abstract class CanvasRenderer {
protected canvas: OffscreenCanvas;
constructor(c: OffscreenCanvas) {
this.canvas = c;
}
abstract draw(frame: VideoFrame): void;
}

14
client/src/streamplayer/worker/player.ts
View file

@ -1,4 +1,3 @@
import { NALUStream, SPS, Slice } from "h264-interp-utils";
import {
PlayerInputMessage,
@ -6,11 +5,11 @@ import {
PlayerInitMessage,
PlayerVideoDataMessage,
} from "./stream_worker_messages";
import { Canvas2DRenderer } from "./canvas_2d_renderer";
import { CanvasRenderer } from "./canvas_renderer";
// player logic
export class VideoStreamPlayer {
private renderer: Canvas2DRenderer | null = null;
private renderer: CanvasRenderer | null = null;
private pendingFrame: VideoFrame | null = null;
private decoder: VideoDecoder | null = null;
private streamInitSPS: SPS | null = null;
@ -130,7 +129,9 @@ export class VideoStreamPlayer {
if (!supportedConfig.supported) {
await this.shutdownDecoder();
throw new Error("I give up, the browser doesn't like no preference either.");
throw new Error(
"I give up, the browser doesn't like no preference either."
);
}
configMessage.usingHwDecode = false;
@ -161,8 +162,7 @@ export class VideoStreamPlayer {
return this.renderer !== null;
}
setRenderer(r: Canvas2DRenderer) {
setRenderer(r: CanvasRenderer) {
this.renderer = r;
}
}
}