43 lines
1.9 KiB
JavaScript
43 lines
1.9 KiB
JavaScript
// example: https://github.com/rgov/js-theora-decoder/blob/main/index.html
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// https://github.com/brion/ogv.js/releases, yarn add has no simd
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// dev: copy decoder files from node/ogv/dist/* to project dir
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// dist: .... to dist
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/*
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OGVDemuxerOggW: 'ogv-demuxer-ogg-wasm.js',
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OGVDemuxerWebMW: 'ogv-demuxer-webm-wasm.js',
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OGVDecoderAudioOpusW: 'ogv-decoder-audio-opus-wasm.js',
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OGVDecoderAudioVorbisW: 'ogv-decoder-audio-vorbis-wasm.js',
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OGVDecoderVideoTheoraW: 'ogv-decoder-video-theora-wasm.js',
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OGVDecoderVideoVP8W: 'ogv-decoder-video-vp8-wasm.js',
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OGVDecoderVideoVP8MTW: 'ogv-decoder-video-vp8-mt-wasm.js',
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OGVDecoderVideoVP9W: 'ogv-decoder-video-vp9-wasm.js',
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OGVDecoderVideoVP9SIMDW: 'ogv-decoder-video-vp9-simd-wasm.js',
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OGVDecoderVideoVP9MTW: 'ogv-decoder-video-vp9-mt-wasm.js',
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OGVDecoderVideoVP9SIMDMTW: 'ogv-decoder-video-vp9-simd-mt-wasm.js',
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OGVDecoderVideoAV1W: 'ogv-decoder-video-av1-wasm.js',
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OGVDecoderVideoAV1SIMDW: 'ogv-decoder-video-av1-simd-wasm.js',
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OGVDecoderVideoAV1MTW: 'ogv-decoder-video-av1-mt-wasm.js',
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OGVDecoderVideoAV1SIMDMTW: 'ogv-decoder-video-av1-simd-mt-wasm.js',
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*/
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import { simd } from "wasm-feature-detect";
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export async function loadVp9(callback) {
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// Multithreading is used only if `options.threading` is true.
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// This requires browser support for the new `SharedArrayBuffer` and `Atomics` APIs,
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// currently available in Firefox and Chrome with experimental flags enabled.
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// 所有主流浏览器均默认于2018年1月5日禁用SharedArrayBuffer
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const isSIMD = await simd();
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console.log('isSIMD: ' + isSIMD);
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window.OGVLoader.loadClass(
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isSIMD ? "OGVDecoderVideoVP9SIMDW" : "OGVDecoderVideoVP9W",
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(videoCodecClass) => {
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window.videoCodecClass = videoCodecClass;
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videoCodecClass({ videoFormat: {} }).then((decoder) => {
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decoder.init(() => {
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callback(decoder);
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})
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})
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},
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{ worker: true, threading: true }
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);
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} |