/*!
 * artplayer-plugin-asr.js v2.0.1
 * Github: https://github.com/zhw2590582/ArtPlayer
 * (c) 2017-2026 Harvey Zhao
 * Released under the MIT License.
 */
function t(t={}){const{length:e=3,interval:n=100,sampleRate:r=16e3,autoHideTimeout:a=1e4,onAudioChunk:o=()=>null}=t;return t=>{let i=!1,l=null,s=null,u=null,c=null,p=[],d=null,m=!1,y=null,f=null,g=null;const w=t.layers.add({name:"asr",html:""});function h(){w.style.display="none"}function v(t){var n;"string"===typeof t&&(clearTimeout(y),y=setTimeout(h,a),w.style.display="",w.innerHTML=(n=t,n.split(/(?<=[\u3001\u3002\uff01\uff1f!?.])\s*/u).map(t=>t.trim()).filter(Boolean).slice(-e)).map(t=>`<div class="art-asr-line">${t}</div>`).join(""))}async function b(){if(!s&&t.video)try{return s=l.createMediaElementSource(t.video),s}catch(e){console.warn("[artplayerPluginAsr] Direct connection failed:",e)}try{if(f||(f=await async function(t){try{return t.captureStream?t.captureStream():t.mozCaptureStream?t.mozCaptureStream():(console.warn("[artplayerPluginAsr] captureStream not supported"),null)}catch(e){return console.warn("[artplayerPluginAsr] Error capturing stream:",e),null}}(t.video)),f)return g=l.createMediaStreamSource(f),g}catch(e){console.warn("[artplayerPluginAsr] MediaStream fallback failed:",e)}return null}async function x(){i&&(i=!1,clearInterval(d),d=null,u&&(u.disconnect(),u.port.onmessage=null,u=null),c&&(c.disconnect(),c=null),p=[])}async function A(){await x(),g&&(g.disconnect(),g=null),s&&(s.disconnect(),s=null),f&&(f.getTracks().forEach(t=>t.stop()),f=null),l&&(await l.close(),l=null),m=!1}return t.on("video:volumechange",()=>{c&&(c.gain.value=t.volume)}),t.on("play",async function(){if(!i)try{await async function(){return l||(l=new(window.AudioContext||window.webkitAudioContext)({sampleRate:r}),"suspended"===l.state&&await l.resume(),l)}();const t=await b();if(!t)throw new Error("Could not establish audio source");if(!m){const t=(()=>{const t=new Blob(["\n            class RecorderProcessor extends AudioWorkletProcessor {\n                process(inputs) {\n                    const input = inputs[0];\n                    if (input && input[0]) {\n                        this.port.postMessage(input[0]);\n                    }\n                    return true;\n                }\n            }\n            registerProcessor('recorder-processor', RecorderProcessor);\n        "],{type:"application/javascript"});return URL.createObjectURL(t)})();await l.audioWorklet.addModule(t),URL.revokeObjectURL(t),m=!0}c=l.createGain(),c.gain.value=1,u=new AudioWorkletNode(l,"recorder-processor"),u.port.onmessage=t=>{p.push(new Float32Array(t.data))},t.connect(u),t.connect(c),c.connect(l.destination);const e=r*(n/1e3);d=setInterval(async()=>{if(0===p.length)return;let t=new Float32Array(0);for(;t.length<e&&p.length;){const e=p.shift(),n=new Float32Array(t.length+e.length);n.set(t,0),n.set(e,t.length),t=n}if(t.length<e)return;const n=function(t){const e=t.length,n=new ArrayBuffer(2*e),r=new DataView(n);for(let a=0;a<e;a++){const e=Math.max(-1,Math.min(1,t[a]));r.setInt16(2*a,e<0?32768*e:32767*e,!0)}return n}(t.slice(0,e)),a=function(t,e){const n=t.byteLength,r=new ArrayBuffer(44+n),a=new DataView(r),o=(t,e)=>{for(let n=0;n<e.length;n++)a.setUint8(t+n,e.charCodeAt(n))};return o(0,"RIFF"),a.setUint32(4,36+n,!0),o(8,"WAVE"),o(12,"fmt "),a.setUint32(16,16,!0),a.setUint16(20,1,!0),a.setUint16(22,1,!0),a.setUint32(24,e,!0),a.setUint32(28,2*e,!0),a.setUint16(32,2,!0),a.setUint16(34,16,!0),o(36,"data"),a.setUint32(40,n,!0),new Uint8Array(r).set(new Uint8Array(t),44),r}(n,r);v(await o({pcm:n,wav:a}))},n),i=!0}catch(t){console.error("[artplayerPluginAsr] Initialization failed:",t),await x()}}),t.on("pause",x),t.on("destroy",A),{name:"artplayerPluginAsr",stop:A,hide:h,append:v}}}if("undefined"!==typeof document&&!document.getElementById("artplayer-plugin-asr")){const t=document.createElement("style");t.id="artplayer-plugin-asr",t.textContent=".art-video-player .art-layer-asr{pointer-events:none!important;position:absolute;z-index:150;inset:0;display:flex;flex-direction:column;justify-content:end;padding:0 2%;font-size:1rem;gap:var(--art-subtitle-gap);padding-bottom:var(--art-subtitle-bottom);transition:padding-bottom var(--art-transition-duration) ease;text-shadow:var(--art-subtitle-border) 1px 0 1px,var(--art-subtitle-border) 0 1px 1px,var(--art-subtitle-border) -1px 0 1px,var(--art-subtitle-border) 0 -1px 1px,var(--art-subtitle-border) 1px 1px 1px,var(--art-subtitle-border) -1px -1px 1px,var(--art-subtitle-border) 1px -1px 1px,var(--art-subtitle-border) -1px 1px 1px}.art-video-player.art-control-show .art-layer-asr{padding-bottom:calc(var(--art-control-height) + var(--art-subtitle-bottom))}",document.head.appendChild(t)}export{t as default};