diff --git a/app/static/js/app.jsx b/app/static/js/app.jsx index 62d6748..b3af8b1 100644 --- a/app/static/js/app.jsx +++ b/app/static/js/app.jsx @@ -9027,6 +9027,9 @@ const MediaExplorerPanel = ({ height }) => { const [audioBuffer, setAudioBuffer] = React.useState(null); const [midiNotes, setMidiNotes] = React.useState(null); const [midiTotal, setMidiTotal] = React.useState(4); + const [midiBars, setMidiBars] = React.useState(1); + const [midiTotalBeats, setMidiTotalBeats] = React.useState(16); + const [midiFileBpm, setMidiFileBpm] = React.useState(120); const [tempo, setTempo] = React.useState(function() { var saved = localStorage.getItem('studio_media_explorer_tempo'); return saved ? parseInt(saved) : 120; @@ -9038,6 +9041,9 @@ const MediaExplorerPanel = ({ height }) => { const audioBufferRef = React.useRef(null); const midiNotesRef = React.useRef(null); const midiTotalRef = React.useRef(4); + const midiBarsRef = React.useRef(1); + const midiTotalBeatsRef = React.useRef(16); + const midiFileBpmRef = React.useRef(120); const isPlayingRef = React.useRef(false); const isPausedRef = React.useRef(false); const folderRef = React.useRef('library'); @@ -9048,6 +9054,9 @@ const MediaExplorerPanel = ({ height }) => { audioBufferRef.current = audioBuffer; midiNotesRef.current = midiNotes; midiTotalRef.current = midiTotal; + midiBarsRef.current = midiBars; + midiTotalBeatsRef.current = midiTotalBeats; + midiFileBpmRef.current = midiFileBpm; isPlayingRef.current = isPlaying; isPausedRef.current = isPaused; folderRef.current = folder; @@ -9068,6 +9077,8 @@ const MediaExplorerPanel = ({ height }) => { const [synthLoading, setSynthLoading] = React.useState(false); const synthListRef = React.useRef(null); synthListRef.current = synthList; + const synthInstRef = React.useRef(null); + synthInstRef.current = synthInst; const [treeWidth, setTreeWidth] = React.useState(function() { var saved = localStorage.getItem('studio_media_explorer_tree_width'); return saved ? parseInt(saved) : 176; @@ -9094,6 +9105,7 @@ const MediaExplorerPanel = ({ height }) => { const canvasRef = React.useRef(null); const playStateRef = React.useRef(null); const rafRef = React.useRef(null); + const loopTimerRef = React.useRef(null); const selectTokenRef = React.useRef(0); React.useEffect(() => { @@ -9302,6 +9314,36 @@ const MediaExplorerPanel = ({ height }) => { const openMyComputer = async () => { setFolder('computer'); + // Restore last opened folder from session (click My Computer → show folder content directly) + try { + const raw = localStorage.getItem(SESSION_KEY); + if (raw) { + const snap = JSON.parse(raw); + if (snap && snap.computerPath && snap.computerFiles) { + setComputerPath(snap.computerPath); + setComputerFiles(snap.computerFiles); + setComputerMode(snap.computerMode || 'server'); + if (snap.computerTree) { + const tree = {}; + Object.keys(snap.computerTree).forEach(p => { tree[p] = { dirs: snap.computerTree[p].dirs || [], expanded: snap.computerTree[p].expanded }; }); + setComputerTree(tree); + } + if (snap.computerRoots && snap.computerRoots.length) setComputerRoots(snap.computerRoots); + if (snap.selected) setSelected(snap.selected); + // For client mode, re-attach real handles by walking from the stored root handle + if (snap.computerMode === 'client') { + const savedHandle = await loadClientRootHandle(); + if (savedHandle && savedHandle.kind === 'directory') { + setClientRoot(savedHandle); + setComputerRoots([{ name: savedHandle.name, path: 'root', is_dir: true, handle: savedHandle }]); + setComputerMode('client'); + browseComputerDir({ name: savedHandle.name, path: 'root', is_dir: true, handle: savedHandle }); + } + } + return; + } + } + } catch (e) {} if (window.showDirectoryPicker) { try { const handle = await window.showDirectoryPicker({ mode: 'read' }); @@ -9470,8 +9512,17 @@ const MediaExplorerPanel = ({ height }) => { const selectSynthInst = (inst) => { setSynthInst(inst); + synthInstRef.current = inst; setSynthOpen(false); localStorage.setItem('studio_media_explorer_synth', JSON.stringify(inst)); + // Realtime: re-schedule current MIDI preview with the newly selected instrument + const cur = selectedRef.current; + if (isPlayingRef.current && cur && isMidiFile(cur) && (cur.handle || cur.path || cur.file_id || cur.fileId)) { + selectTokenRef.current++; + const token = selectTokenRef.current; + try { if (window.SonicSF && typeof window.SonicSF.stopAll === 'function') window.SonicSF.stopAll(); } catch (e) {} + playMidiPreview(cur, token); + } }; const playMidiPreview = async (f, token) => { @@ -9484,31 +9535,54 @@ const MediaExplorerPanel = ({ height }) => { const midiResult = (typeof parseMidiFile === 'function' ? parseMidiFile : window.parseMidiFile)(buf); if (!midiResult || !midiResult.length) return; const ctx = getAudioContext(); - const bpmVal = tempoRef.current || parseInt(synthInst && synthInst.bpm) || 120; + const bpmVal = tempoRef.current || 120; const secondsPerBeat = 60.0 / bpmVal; const startWallTime = ctx.currentTime + 0.05; - const program = synthInst ? synthInst.program : undefined; - const sfId = synthInst ? synthInst.sfId : undefined; - const bank = synthInst ? synthInst.bank : 0; - if (synthInst && window.SonicSF.selectInstrument) { + const curInst = synthInstRef.current; + const program = curInst ? curInst.program : undefined; + const sfId = curInst ? curInst.sfId : undefined; + const bank = curInst ? curInst.bank : 0; + if (curInst && window.SonicSF.selectInstrument) { try { await window.SonicSF.selectInstrument(0, bank, program, sfId); } catch (e2) {} } // Re-check token after the async await — stale playMidiPreview (older file) // must not schedule notes over the newly selected file. if (selectTokenRef.current !== (token || selectTokenRef.current)) return; - const prog = (synthInst && synthInst.program !== undefined) ? synthInst.program : undefined; - const eng = synthInst ? { soundfont_id: sfId, soundfont_bank: bank, soundfont_program: prog !== undefined ? prog : 0 } : undefined; + const prog = (curInst && curInst.program !== undefined) ? curInst.program : undefined; + const eng = curInst ? { soundfont_id: sfId, soundfont_bank: bank, soundfont_program: prog !== undefined ? prog : 0 } : undefined; + const totalSec = midiResult[0].duration || 4; + const allNotes = []; midiResult.forEach(track => { (track.notes || []).forEach(note => { - const startSec = (note.start_beat || 0) * secondsPerBeat; - const durMs = Math.max(80, (note.duration_beats || 1) * secondsPerBeat * 1000); - window.SonicSF.playNote(note.pitch || 60, (note.velocity || 0.8), durMs, startWallTime + startSec, prog, null, 0, eng); + allNotes.push(Object.assign({}, note, { trackOffset: track.startTime || 0 })); }); }); + const schedulePass = (passStartTime) => { + allNotes.forEach(note => { + const startSec = (note.start_beat || 0) * secondsPerBeat + (note.trackOffset || 0); + const durMs = Math.max(80, (note.duration_beats || 1) * secondsPerBeat * 1000); + window.SonicSF.playNote(note.pitch || 60, (note.velocity || 0.8), durMs, passStartTime + startSec, prog, null, 0, eng); + }); + }; + schedulePass(startWallTime); + // Loop scheduling + if (loopTimerRef.current) { clearInterval(loopTimerRef.current); loopTimerRef.current = null; } + if (isLooping) { + loopTimerRef.current = setInterval(() => { + if (selectTokenRef.current !== (token || selectTokenRef.current)) { clearInterval(loopTimerRef.current); loopTimerRef.current = null; return; } + if (!isPlayingRef.current || isPausedRef.current) return; + const passStart = ctx.currentTime + 0.05; + schedulePass(passStart); + playStateRef.current = Object.assign({}, playStateRef.current, { startedAt: passStart, fakeStart: passStart }); + }, Math.max(200, totalSec * 1000)); + } // Keep a fake clock so canvas playhead animates; loop uses playStateRef - playStateRef.current = { source: null, ctx, startedAt: startWallTime, fakeStart: startWallTime, midiTotal: midiResult[0].duration || 4 }; - setMidiNotes(midiResult[0].notes || []); - setMidiTotal(midiResult[0].duration || 4); + playStateRef.current = { source: null, ctx, startedAt: startWallTime, fakeStart: startWallTime, midiTotal: totalSec }; + setMidiNotes(allNotes); + setMidiTotal(totalSec); + setMidiBars(midiResult[0].bars || 1); + setMidiTotalBeats(midiResult[0].totalBeats || 16); + setMidiFileBpm(midiResult[0].bpm || 120); setIsPlaying(true); setIsPaused(false); startCanvasClock(); @@ -9523,6 +9597,7 @@ const MediaExplorerPanel = ({ height }) => { } if (rafRef.current) cancelAnimationFrame(rafRef.current); rafRef.current = null; + if (loopTimerRef.current) { clearInterval(loopTimerRef.current); loopTimerRef.current = null; } if (window.SonicSF && typeof window.SonicSF.stopAll === 'function') { try { window.SonicSF.stopAll(); } catch (e) {} } @@ -9616,6 +9691,8 @@ const MediaExplorerPanel = ({ height }) => { const curAudioBuffer = audioBufferRef.current; const curMidiNotes = midiNotesRef.current; const curMidiTotal = midiTotalRef.current; + const curMidiBars = midiBarsRef.current; + const curMidiTotalBeats = midiTotalBeatsRef.current; const curTempo = tempoRef.current; const playing = isPlayingRef.current; if (!f) { @@ -9631,14 +9708,17 @@ const MediaExplorerPanel = ({ height }) => { // Content scrolls when wider than frame: playhead stays at frame center const bpmV = curTempo || 120; const pxPerBeat = 42; - const totalBeats = curMidiNotes && curMidiNotes.length ? Math.max(curMidiTotal * bpmV / 60, 4) : (f.lengthQn || 16); - const beats = totalBeats; + const totalBeats = (curMidiNotes && curMidiNotes.length && curMidiTotalBeats > 0) + ? curMidiTotalBeats + : Math.max(curMidiTotal * bpmV / 60, 4); + const beats = Math.max(totalBeats, 4); const contentW = Math.max(w, beats * pxPerBeat); const pxPerSec = pxPerBeat * bpmV / 60; let offset = 0; if (playing && contentW > w && dur > 0) { offset = Math.max(0, Math.min(contentW - w, t * pxPerSec - w / 2)); } + // bar lines (every 4 beats) + beat labels for (let b = 0; b <= beats; b += 4) { const x = b * pxPerBeat - offset; if (x < -10 || x > w + 10) continue; @@ -9702,9 +9782,11 @@ const MediaExplorerPanel = ({ height }) => { ctx.fillStyle = '#888'; ctx.font = '9px JetBrains Mono, monospace'; const rulerBpm = curTempo || 120; const rulerPxPerBeat = isMidiFile(f) ? 42 : (50 * 60 / rulerBpm); - const rulerContentW = Math.max(w, dur * rulerPxPerBeat * rulerBpm / 60); - const rulerTotalBeats = Math.max(4, Math.ceil(dur * rulerBpm / 60) || 16); - const rulerOffset = (playing && rulerContentW > w && dur > 0) ? Math.max(0, Math.min(rulerContentW - w, t * (rulerPxPerBeat * rulerBpm / 60) - w / 2)) : 0; + const isRealMidi = isMidiFile(f) && curMidiNotes && curMidiNotes.length && curMidiTotalBeats > 0; + const rulerTotalBeats = isRealMidi ? Math.max(curMidiTotalBeats, 4) : Math.max(4, Math.ceil(dur * rulerBpm / 60) || 16); + const rulerContentW = isRealMidi ? Math.max(w, rulerTotalBeats * rulerPxPerBeat) : Math.max(w, dur * rulerPxPerBeat * rulerBpm / 60); + const rulerPxPerSec = rulerPxPerBeat * rulerBpm / 60; + const rulerOffset = (playing && rulerContentW > w && dur > 0) ? Math.max(0, Math.min(rulerContentW - w, t * rulerPxPerSec - w / 2)) : 0; for (let b = 0; b <= rulerTotalBeats; b += 4) { const x = b * rulerPxPerBeat - rulerOffset; if (x < -20 || x > w + 20) continue; @@ -9755,6 +9837,16 @@ const MediaExplorerPanel = ({ height }) => { setIsLooping(prev => { const next = !prev; if (playStateRef.current && playStateRef.current.source) playStateRef.current.source.loop = next; + if (next && isMidiFile(selectedRef.current)) { + // Re-schedule loop for the currently previewing MIDI file + const cur = selectedRef.current; + if (cur && (cur.handle || cur.path || cur.file_id || cur.fileId)) { + selectTokenRef.current++; + const token = selectTokenRef.current; + try { if (window.SonicSF && typeof window.SonicSF.stopAll === 'function') window.SonicSF.stopAll(); } catch (e) {} + playMidiPreview(cur, token); + } + } return next; }); }; @@ -9972,9 +10064,20 @@ const MediaExplorerPanel = ({ height }) => { ) : (
Size: {selected.size_mb != null ? selected.size_mb.toFixed(2) + ' MB' : '-'}
-
Duration: {selDur.toFixed(2)}s
-
Sample Rate: 44100 Hz
-
Type: {selected.path ? (selIsMidi ? 'Local MIDI' : (selected.kind === 'other' ? 'Local File' : 'Local Audio')) : (selected.type || 'Audio')}
+ {selIsMidi ? ( + +
Bars: {midiBars || 1}
+
Beats: {Math.round(midiTotalBeats || 16)}
+
BPM: {midiFileBpm || 120}
+
Duration: {selDur.toFixed(2)}s
+ + ) : ( + +
Duration: {selDur.toFixed(2)}s
+
Sample Rate: 44100 Hz
+
Type: {selected.path ? (selected.kind === 'other' ? 'Local File' : 'Local Audio') : (selected.type || 'Audio')}
+ + )} ) ) :
No file selected
} @@ -9984,7 +10087,14 @@ const MediaExplorerPanel = ({ height }) => { {/* FOOTER STATUS BAR */}
-
{formatTime(currentTime)} / {formatTime(selDur)}
+ {selIsMidi && midiNotes && midiNotes.length ? ( +
+ Bar {Math.max(1, Math.floor(currentTime / (4 * 60 / (tempo || 120))) + 1)} / {midiBars || 1} + | {formatTime(currentTime)} / {formatTime(selDur)} +
+ ) : ( +
{formatTime(currentTime)} / {formatTime(selDur)}
+ )}
{selected ? (selected.name || selected.original_name) : 'No file selected'}
{selBpm} bpm x{rate.toFixed(2)}
@@ -16738,9 +16848,21 @@ const App = () => { midiNotes.push({ id: 'mn_' + t + '_' + p + '_' + pn.tick, pitch: p, start_beat: pn.tick / ticksPerBeat, duration_beats: dur / ticksPerBeat, velocity: Math.min(1, pn.vel / 127) }); }); if (midiNotes.length > 0) { - var lastEnd = 0; - midiNotes.forEach(function(n) { var e = (n.start_beat + n.duration_beats) * 60 / bpm; if (e > lastEnd) lastEnd = e; }); - result.push({ name: trackName, notes: midiNotes, duration: lastEnd || 4, startTime: 0, id: 'midi_' + t + '_' + Date.now() }); + var lastEnd = 0; var maxEndBeat = 0; + midiNotes.forEach(function(n) { + var e = (n.start_beat + n.duration_beats) * 60 / bpm; + if (e > lastEnd) lastEnd = e; + var eb = n.start_beat + n.duration_beats; + if (eb > maxEndBeat) maxEndBeat = eb; + }); + result.push({ + name: trackName, notes: midiNotes, duration: lastEnd || 4, startTime: 0, + id: 'midi_' + t + '_' + Date.now(), + totalBeats: maxEndBeat || 16, + bars: Math.max(1, Math.ceil((maxEndBeat || 16) / 4)), + bpm: bpm, + ticksPerBeat: ticksPerBeat + }); } pos = endPos; } diff --git a/app/static/js/app.precompiled.js b/app/static/js/app.precompiled.js index f3e3ec9..0b02de4 100644 --- a/app/static/js/app.precompiled.js +++ b/app/static/js/app.precompiled.js @@ -232,27 +232,33 @@ for(let i=0;i{window.removeEventListener('resize',resizeAll);if(animFrameRef.current)cancelAnimationFrame(animFrameRef.current);};},[isOpen]);React.useEffect(()=>{if(!isOpen){stopAudioDemo();knobsInitializedRef.current=false;}else{setTimeout(()=>{try{window.lucide.createIcons();}catch(e){}},100);}},[isOpen]);if(!isOpen)return null;const switchModule=name=>setOzState(prev=>({...prev,activeModule:name}));const bandKnob=(param,min,max,val,unit,label,freq,color,filterType)=>/*#__PURE__*/React.createElement("div",{className:"bg-slate-900/80 border border-slate-800 p-2 flex flex-col justify-between items-center rounded-lg"},/*#__PURE__*/React.createElement("div",{className:"flex items-center justify-between text-[10px] 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MediaExplorerPanel=({height})=>{const[userFiles,setUserFiles]=React.useState([]);const[folder,setFolder]=React.useState('library');const[selected,setSelected]=React.useState(null);const[filterText,setFilterText]=React.useState('');const[viewMode,setViewMode]=React.useState('details');const[isPlaying,setIsPlaying]=React.useState(false);const[isPaused,setIsPaused]=React.useState(false);const[isLooping,setIsLooping]=React.useState(false);const[autoPlay,setAutoPlay]=React.useState(true);const[pitch,setPitch]=React.useState(0.0);const[rate,setRate]=React.useState(1.0);const[volumeDb,setVolumeDb]=React.useState(0.0);const[currentTime,setCurrentTime]=React.useState(0);const[peaks,setPeaks]=React.useState(null);const[audioBuffer,setAudioBuffer]=React.useState(null);const[midiNotes,setMidiNotes]=React.useState(null);const[midiTotal,setMidiTotal]=React.useState(4);const[tempo,setTempo]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_tempo');return saved?parseInt(saved):120;}());// Refs mirror latest state so drawCanvas (also called from rAF clock with a +const MEDIA_LIBRARY_SAMPLES=[{name:"MIDI_Loop_01.mid",events:95,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_02_Bass.mid",events:48,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_03_Lead.mid",events:110,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_04.mid",events:76,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_05_Bass.mid",events:52,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_06.mid",events:88,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"}];const MediaExplorerPanel=({height})=>{const[userFiles,setUserFiles]=React.useState([]);const[folder,setFolder]=React.useState('library');const[selected,setSelected]=React.useState(null);const[filterText,setFilterText]=React.useState('');const[viewMode,setViewMode]=React.useState('details');const[isPlaying,setIsPlaying]=React.useState(false);const[isPaused,setIsPaused]=React.useState(false);const[isLooping,setIsLooping]=React.useState(false);const[autoPlay,setAutoPlay]=React.useState(true);const[pitch,setPitch]=React.useState(0.0);const[rate,setRate]=React.useState(1.0);const[volumeDb,setVolumeDb]=React.useState(0.0);const[currentTime,setCurrentTime]=React.useState(0);const[peaks,setPeaks]=React.useState(null);const[audioBuffer,setAudioBuffer]=React.useState(null);const[midiNotes,setMidiNotes]=React.useState(null);const[midiTotal,setMidiTotal]=React.useState(4);const[midiBars,setMidiBars]=React.useState(1);const[midiTotalBeats,setMidiTotalBeats]=React.useState(16);const[midiFileBpm,setMidiFileBpm]=React.useState(120);const[tempo,setTempo]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_tempo');return saved?parseInt(saved):120;}());// Refs mirror latest state so drawCanvas (also called from rAF clock with a // stale closure) always draws the currently selected file, not the old one. -const selectedRef=React.useRef(null);const peaksRef=React.useRef(null);const audioBufferRef=React.useRef(null);const midiNotesRef=React.useRef(null);const midiTotalRef=React.useRef(4);const isPlayingRef=React.useRef(false);const isPausedRef=React.useRef(false);const folderRef=React.useRef('library');const tempoRef=React.useRef(120);const currentTimeRef=React.useRef(0);selectedRef.current=selected;peaksRef.current=peaks;audioBufferRef.current=audioBuffer;midiNotesRef.current=midiNotes;midiTotalRef.current=midiTotal;isPlayingRef.current=isPlaying;isPausedRef.current=isPaused;folderRef.current=folder;tempoRef.current=tempo;currentTimeRef.current=currentTime;const[computerRoots,setComputerRoots]=React.useState(null);const[computerTree,setComputerTree]=React.useState({});const[computerPath,setComputerPath]=React.useState(null);const[computerFiles,setComputerFiles]=React.useState([]);const[computerMode,setComputerMode]=React.useState('server');const[clientRoot,setClientRoot]=React.useState(null);const[synthInst,setSynthInst]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_synth');return saved?JSON.parse(saved):null;}());const[synthOpen,setSynthOpen]=React.useState(false);const[synthList,setSynthList]=React.useState(null);const[synthLoading,setSynthLoading]=React.useState(false);const synthListRef=React.useRef(null);synthListRef.current=synthList;const[treeWidth,setTreeWidth]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_tree_width');return saved?parseInt(saved):176;}());const treeWidthRef=React.useRef(176);treeWidthRef.current=treeWidth;const startTreeResize=e=>{e.preventDefault();const startX=e.clientX;const startW=treeWidthRef.current;const onMove=ev=>{const newW=Math.max(110,Math.min(420,startW+(ev.clientX-startX)));treeWidthRef.current=newW;setTreeWidth(newW);};const onUp=()=>{document.removeEventListener('mousemove',onMove);document.removeEventListener('mouseup',onUp);localStorage.setItem('studio_media_explorer_tree_width',treeWidthRef.current.toString());};document.addEventListener('mousemove',onMove);document.addEventListener('mouseup',onUp);};const canvasRef=React.useRef(null);const playStateRef=React.useRef(null);const rafRef=React.useRef(null);const selectTokenRef=React.useRef(0);React.useEffect(()=>{if(window.SonicAPI&&window.SonicAPI.listMyFiles){window.SonicAPI.listMyFiles([]).then(data=>setUserFiles(data||[])).catch(()=>{});}return()=>{stopMediaPlayback();};// eslint-disable-next-line react-hooks/exhaustive-deps +const selectedRef=React.useRef(null);const peaksRef=React.useRef(null);const audioBufferRef=React.useRef(null);const midiNotesRef=React.useRef(null);const midiTotalRef=React.useRef(4);const midiBarsRef=React.useRef(1);const midiTotalBeatsRef=React.useRef(16);const midiFileBpmRef=React.useRef(120);const isPlayingRef=React.useRef(false);const isPausedRef=React.useRef(false);const folderRef=React.useRef('library');const tempoRef=React.useRef(120);const currentTimeRef=React.useRef(0);selectedRef.current=selected;peaksRef.current=peaks;audioBufferRef.current=audioBuffer;midiNotesRef.current=midiNotes;midiTotalRef.current=midiTotal;midiBarsRef.current=midiBars;midiTotalBeatsRef.current=midiTotalBeats;midiFileBpmRef.current=midiFileBpm;isPlayingRef.current=isPlaying;isPausedRef.current=isPaused;folderRef.current=folder;tempoRef.current=tempo;currentTimeRef.current=currentTime;const[computerRoots,setComputerRoots]=React.useState(null);const[computerTree,setComputerTree]=React.useState({});const[computerPath,setComputerPath]=React.useState(null);const[computerFiles,setComputerFiles]=React.useState([]);const[computerMode,setComputerMode]=React.useState('server');const[clientRoot,setClientRoot]=React.useState(null);const[synthInst,setSynthInst]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_synth');return saved?JSON.parse(saved):null;}());const[synthOpen,setSynthOpen]=React.useState(false);const[synthList,setSynthList]=React.useState(null);const[synthLoading,setSynthLoading]=React.useState(false);const synthListRef=React.useRef(null);synthListRef.current=synthList;const synthInstRef=React.useRef(null);synthInstRef.current=synthInst;const[treeWidth,setTreeWidth]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_tree_width');return saved?parseInt(saved):176;}());const treeWidthRef=React.useRef(176);treeWidthRef.current=treeWidth;const startTreeResize=e=>{e.preventDefault();const startX=e.clientX;const startW=treeWidthRef.current;const onMove=ev=>{const newW=Math.max(110,Math.min(420,startW+(ev.clientX-startX)));treeWidthRef.current=newW;setTreeWidth(newW);};const onUp=()=>{document.removeEventListener('mousemove',onMove);document.removeEventListener('mouseup',onUp);localStorage.setItem('studio_media_explorer_tree_width',treeWidthRef.current.toString());};document.addEventListener('mousemove',onMove);document.addEventListener('mouseup',onUp);};const canvasRef=React.useRef(null);const playStateRef=React.useRef(null);const rafRef=React.useRef(null);const loopTimerRef=React.useRef(null);const selectTokenRef=React.useRef(0);React.useEffect(()=>{if(window.SonicAPI&&window.SonicAPI.listMyFiles){window.SonicAPI.listMyFiles([]).then(data=>setUserFiles(data||[])).catch(()=>{});}return()=>{stopMediaPlayback();};// eslint-disable-next-line react-hooks/exhaustive-deps },[]);// ── Session persistence: keep loaded folder/files/tree across panel toggles & reloads ── const SESSION_KEY='studio_media_explorer_session_v1';const saveClientRootHandle=()=>{if(!clientRoot||!window.indexedDB)return;try{const req=indexedDB.open('sonicforge_media_explorer',1);req.onupgradeneeded=e=>{const db=e.target.result;if(!db.objectStoreNames.contains('root_handle'))db.createObjectStore('root_handle');};req.onsuccess=()=>{const db=req.result;const tx=db.transaction('root_handle','readwrite');tx.objectStore('root_handle').put(clientRoot,'client_root');};}catch(e){}};const loadClientRootHandle=()=>{return new Promise(resolve=>{if(!window.indexedDB){resolve(null);return;}try{const req=indexedDB.open('sonicforge_media_explorer',1);req.onupgradeneeded=e=>{const db=e.target.result;if(!db.objectStoreNames.contains('root_handle'))db.createObjectStore('root_handle');};req.onsuccess=()=>{const db=req.result;try{const tx=db.transaction('root_handle','readonly');const g=tx.objectStore('root_handle').get('client_root');g.onsuccess=()=>resolve(g.result||null);g.onerror=()=>resolve(null);}catch(e2){resolve(null);}};req.onerror=()=>resolve(null);}catch(e){resolve(null);}});};const saveSession=React.useCallback(()=>{try{const stripHandle=o=>{if(Array.isArray(o))return o.map(stripHandle);if(o&&typeof o==='object'){const out={};for(const k of Object.keys(o)){if(k==='handle')continue;out[k]=stripHandle(o[k]);}return out;}return o;};const treeSnapshot={};Object.keys(computerTree).forEach(path=>{const node=computerTree[path];treeSnapshot[path]={dirs:stripHandle(node?node.dirs:[]),expanded:!!(node&&node.expanded)};});const snap={folder,computerMode,computerPath,clientRootName:clientRoot?clientRoot.name:null,computerRoots:stripHandle(computerRoots||[]),computerTree:treeSnapshot,computerFiles:stripHandle(computerFiles||[]),selected:selected?stripHandle({name:selected.name,path:selected.path,kind:selected.kind,is_dir:selected.is_dir,size_mb:selected.size_mb}):null,savedAt:Date.now()};localStorage.setItem(SESSION_KEY,JSON.stringify(snap));}catch(e){}},[folder,computerMode,computerPath,clientRoot,computerRoots,computerTree,computerFiles,selected]);React.useEffect(()=>{saveSession();if(computerMode==='client'&&clientRoot&&clientRoot.kind==='directory')saveClientRootHandle();},[saveSession,computerMode,clientRoot]);const restoreSession=React.useCallback(()=>{try{const raw=localStorage.getItem(SESSION_KEY);if(!raw)return;const snap=JSON.parse(raw);if(snap.folder)setFolder(snap.folder);if(snap.computerMode)setComputerMode(snap.computerMode);if(snap.clientRootName)setClientRoot({name:snap.clientRootName});if(snap.computerRoots&&snap.computerRoots.length)setComputerRoots(snap.computerRoots);if(snap.computerPath)setComputerPath(snap.computerPath);if(snap.computerFiles)setComputerFiles(snap.computerFiles);if(snap.selected)setSelected(snap.selected);if(snap.computerTree){const tree={};Object.keys(snap.computerTree).forEach(path=>{tree[path]={dirs:snap.computerTree[path].dirs||[],expanded:snap.computerTree[path].expanded};});setComputerTree(tree);}}catch(e){}},[]);React.useEffect(()=>{(async()=>{await restoreSession();// Restore the FileSystemDirectoryHandle so client-mode browsing still works const savedHandle=await loadClientRootHandle();if(savedHandle&&savedHandle.kind==='directory'){setClientRoot(savedHandle);const restoredPath=(()=>{try{return JSON.parse(localStorage.getItem(SESSION_KEY)||'{}').computerPath;}catch(e){return null;}})();if(restoredPath){setComputerRoots([{name:savedHandle.name,path:'root',is_dir:true,handle:savedHandle}]);// Re-browse current dir to re-attach real handles (metadata-only tree from localStorage) const storedTree=(()=>{try{return JSON.parse(localStorage.getItem(SESSION_KEY)||'{}').computerTree;}catch(e){return null;}})();if(storedTree){const rebuilt={};Object.keys(storedTree).forEach(p=>{rebuilt[p]={dirs:storedTree[p].dirs||[],expanded:storedTree[p].expanded};});setComputerTree(rebuilt);}setComputerMode('client');// Rebuild handles for the current folder + ancestors by walking from root browseComputerDir({name:savedHandle.name,path:'root',is_dir:true,handle:savedHandle});}}})();// eslint-disable-next-line react-hooks/exhaustive-deps -},[]);const isMidiFile=f=>f&&(f.kind==='midi'||/\.(mid|midi)$/i.test(f.name||f.original_name||''));const fileDuration=f=>{if(!f)return 0;if(isMidiFile(f)){if(midiTotalRef.current&&midiNotesRef.current&&midiNotesRef.current.length)return midiTotalRef.current;return(f.lengthQn||16)*60/(f.bpm||tempoRef.current||120);}const sel=selectedRef.current;const matches=sel&&(f.path&&f.path===sel.path||!f.path&&(f.file_id||f.fileId)===(sel.file_id||sel.fileId));return f.duration||(audioBufferRef.current&&matches?audioBufferRef.current.duration:0)||0;};const folderFiles=React.useMemo(()=>{if(folder==='library')return MEDIA_LIBRARY_SAMPLES;if(folder==='computer'){const node=computerTree[computerPath]||{dirs:[]};return[...(node.dirs||[]),...computerFiles];}return userFiles.filter(f=>folder==='uploads'?(f.type||'Upload')==='Upload':(f.type||'Processed')==='Processed');},[folder,userFiles,computerFiles,computerTree,computerPath]);const visibleFiles=React.useMemo(()=>{const q=filterText.toLowerCase().trim();if(!q)return folderFiles;return folderFiles.filter(f=>(f.name||f.original_name||'').toLowerCase().includes(q));},[folderFiles,filterText]);const loadWaveform=async f=>{const token=selectTokenRef.current;if(f&&(f.handle||f.path)){try{const buf=await readLocalFileBuffer(f);if(selectTokenRef.current!==token)return;if(!buf){setPeaks(null);return;}const ctx=getAudioContext();const decoded=await ctx.decodeAudioData(buf);if(selectTokenRef.current!==token)return;setAudioBuffer(decoded);const data=decoded.getChannelData(0);const count=600;const step=Math.max(1,Math.floor(data.length/count));const pk=[];for(let i=0;im)m=v;}pk.push(m);}setPeaks(pk);}catch(e){if(selectTokenRef.current===token)setPeaks(null);}return;}const fid=f.file_id||f.fileId;if(!fid){setPeaks(null);return;}try{const resp=await fetch(`${API_BASE_URL}/api/v1/audio/waveform/${fid}?num_peaks=600`);const data=await resp.json();if(selectTokenRef.current!==token)return;setPeaks(data.peaks||[]);}catch(e){setPeaks(null);}};const openMyComputer=async()=>{setFolder('computer');if(window.showDirectoryPicker){try{const handle=await window.showDirectoryPicker({mode:'read'});setComputerMode('client');setClientRoot(handle);const rootEntry={name:handle.name,path:'root',is_dir:true,handle};setComputerRoots([rootEntry]);setComputerPath('root');setComputerFiles([]);setComputerTree({root:{handle,parent:null,dirs:[],expanded:true}});await browseComputerDir(rootEntry);return;}catch(e){if(e&&e.name==='AbortError')return;window.showToast&&window.showToast('Không thể mở thư mục: '+e.message,'error');return;}}// Fallback: server API (trình duyệt không hỗ trợ File System Access API) +},[]);const isMidiFile=f=>f&&(f.kind==='midi'||/\.(mid|midi)$/i.test(f.name||f.original_name||''));const fileDuration=f=>{if(!f)return 0;if(isMidiFile(f)){if(midiTotalRef.current&&midiNotesRef.current&&midiNotesRef.current.length)return midiTotalRef.current;return(f.lengthQn||16)*60/(f.bpm||tempoRef.current||120);}const sel=selectedRef.current;const matches=sel&&(f.path&&f.path===sel.path||!f.path&&(f.file_id||f.fileId)===(sel.file_id||sel.fileId));return f.duration||(audioBufferRef.current&&matches?audioBufferRef.current.duration:0)||0;};const folderFiles=React.useMemo(()=>{if(folder==='library')return MEDIA_LIBRARY_SAMPLES;if(folder==='computer'){const node=computerTree[computerPath]||{dirs:[]};return[...(node.dirs||[]),...computerFiles];}return userFiles.filter(f=>folder==='uploads'?(f.type||'Upload')==='Upload':(f.type||'Processed')==='Processed');},[folder,userFiles,computerFiles,computerTree,computerPath]);const visibleFiles=React.useMemo(()=>{const q=filterText.toLowerCase().trim();if(!q)return folderFiles;return folderFiles.filter(f=>(f.name||f.original_name||'').toLowerCase().includes(q));},[folderFiles,filterText]);const loadWaveform=async f=>{const token=selectTokenRef.current;if(f&&(f.handle||f.path)){try{const buf=await readLocalFileBuffer(f);if(selectTokenRef.current!==token)return;if(!buf){setPeaks(null);return;}const ctx=getAudioContext();const decoded=await ctx.decodeAudioData(buf);if(selectTokenRef.current!==token)return;setAudioBuffer(decoded);const data=decoded.getChannelData(0);const count=600;const step=Math.max(1,Math.floor(data.length/count));const pk=[];for(let i=0;im)m=v;}pk.push(m);}setPeaks(pk);}catch(e){if(selectTokenRef.current===token)setPeaks(null);}return;}const fid=f.file_id||f.fileId;if(!fid){setPeaks(null);return;}try{const resp=await fetch(`${API_BASE_URL}/api/v1/audio/waveform/${fid}?num_peaks=600`);const data=await resp.json();if(selectTokenRef.current!==token)return;setPeaks(data.peaks||[]);}catch(e){setPeaks(null);}};const openMyComputer=async()=>{setFolder('computer');// Restore last opened folder from session (click My Computer → show folder content directly) +try{const raw=localStorage.getItem(SESSION_KEY);if(raw){const snap=JSON.parse(raw);if(snap&&snap.computerPath&&snap.computerFiles){setComputerPath(snap.computerPath);setComputerFiles(snap.computerFiles);setComputerMode(snap.computerMode||'server');if(snap.computerTree){const tree={};Object.keys(snap.computerTree).forEach(p=>{tree[p]={dirs:snap.computerTree[p].dirs||[],expanded:snap.computerTree[p].expanded};});setComputerTree(tree);}if(snap.computerRoots&&snap.computerRoots.length)setComputerRoots(snap.computerRoots);if(snap.selected)setSelected(snap.selected);// For client mode, re-attach real handles by walking from the stored root handle +if(snap.computerMode==='client'){const savedHandle=await loadClientRootHandle();if(savedHandle&&savedHandle.kind==='directory'){setClientRoot(savedHandle);setComputerRoots([{name:savedHandle.name,path:'root',is_dir:true,handle:savedHandle}]);setComputerMode('client');browseComputerDir({name:savedHandle.name,path:'root',is_dir:true,handle:savedHandle});}}return;}}}catch(e){}if(window.showDirectoryPicker){try{const handle=await window.showDirectoryPicker({mode:'read'});setComputerMode('client');setClientRoot(handle);const rootEntry={name:handle.name,path:'root',is_dir:true,handle};setComputerRoots([rootEntry]);setComputerPath('root');setComputerFiles([]);setComputerTree({root:{handle,parent:null,dirs:[],expanded:true}});await browseComputerDir(rootEntry);return;}catch(e){if(e&&e.name==='AbortError')return;window.showToast&&window.showToast('Không thể mở thư mục: '+e.message,'error');return;}}// Fallback: server API (trình duyệt không hỗ trợ File System Access API) setComputerMode('server');if(computerRoots)return;setComputerRoots(null);try{const resp=await fetch(`${API_BASE_URL}/api/v1/media/computer`);if(!resp.ok)throw new Error('HTTP '+resp.status);const data=await resp.json();const roots=data.roots||[];setComputerRoots(roots.length?roots:[{path:'/',name:'Root (/)',is_dir:true}]);if(!roots.length)window.showToast&&window.showToast('Không tìm thấy ổ đĩa nào','warning');}catch(e){setComputerRoots([{path:'/',name:'Root (/)',is_dir:true}]);window.showToast&&window.showToast('Không thể truy cập My Computer: '+e.message,'error');}};const browseClientDir=async entry=>{const handle=entry&&entry.handle;if(!handle||!handle.entries)return;const dirs=[];const files=[];const parentPath=entry.path;try{for await(const[name,h]of handle.entries()){if(name.startsWith('.'))continue;if(h.kind==='directory'){dirs.push({name,path:parentPath+'/'+name,is_dir:true,handle:h});}else{const ext=(name.split('.').pop()||'').toLowerCase();const kind=ext==='mid'||ext==='midi'?'midi':['wav','mp3','ogg','flac','aiff','aif','m4a','aac','opus'].includes(ext)?'audio':'other';let size=0;try{const f=await h.getFile();size=f.size;}catch(e2){}files.push({name,path:parentPath+'/'+name,is_dir:false,size_mb:size?+(size/1048576).toFixed(2):0,ext:'.'+ext,kind,handle:h});}}dirs.sort((a,b)=>a.name.localeCompare(b.name));files.sort((a,b)=>a.name.localeCompare(b.name));setComputerPath(parentPath);setComputerFiles(files);setSelected(null);setCurrentTime(0);stopMediaPlayback();setComputerTree(prev=>({...prev,[parentPath]:{handle,parent:entry.parent||null,dirs,expanded:true}}));}catch(e){window.showToast&&window.showToast('Không thể đọc thư mục: '+e.message,'error');}};const browseComputerDir=async entry=>{if(!entry)return;if(computerMode==='client'||entry.handle){if(entry.handle&&entry.handle.entries){const parentInfo=computerTree[entry.path];await browseClientDir({...entry,parent:parentInfo?parentInfo.parent:null});return;}}const path=entry.path||entry;if(!path)return;try{const resp=await fetch(`${API_BASE_URL}/api/v1/media/browse?path=${encodeURIComponent(path)}`);if(!resp.ok)throw new Error('HTTP '+resp.status);const data=await resp.json();setComputerPath(data.path);setComputerFiles(data.files||[]);setSelected(null);setCurrentTime(0);stopMediaPlayback();setComputerTree(prev=>({...prev,[path]:{dirs:data.dirs||[],expanded:true}}));}catch(e){window.showToast&&window.showToast('Không thể mở thư mục: '+e.message,'error');}};const toggleComputerDir=async entry=>{if(!entry)return;const path=entry.path||entry;const node=computerTree[path];if(node&&node.expanded){setComputerTree(prev=>({...prev,[path]:{...prev[path],expanded:false}}));}else{await browseComputerDir(entry);}};const goComputerParent=()=>{if(!computerPath)return;if(computerMode==='client'||clientRoot){const node=computerTree[computerPath];const parentHandle=node&&node.parent;if(parentHandle){const parentEntry=computerRoots&&computerRoots[0]&&parentHandle===clientRoot?computerRoots[0]:{name:parentHandle.name,path:computerPath.split('/').slice(0,-1).join('/')||'root',is_dir:true,handle:parentHandle};browseComputerDir({...parentEntry,parent:parentHandle===clientRoot?null:computerTree[parentEntry.path]?computerTree[parentEntry.path].parent:null});}return;}const isUnix=computerPath.startsWith('/');const parts=computerPath.split(/[\\/]/).filter(Boolean);parts.pop();if(isUnix){browseComputerDir(parts.length?'/'+parts.join('/'):'/');}else{// Windows: quay về root ổ đĩa nếu đã lên tới đỉnh -browseComputerDir(parts.length?parts.join('\\'):computerPath.split(/[\\/]/)[0]+'\\');}};const readLocalFileBuffer=async f=>{if(f&&f.handle&&typeof f.handle.getFile==='function'){const file=await f.handle.getFile();return await file.arrayBuffer();}const url=filePreviewUrl(f);if(!url)return null;const resp=await fetch(url);return await resp.arrayBuffer();};const filePreviewUrl=f=>{if(f&&f.path&&!(f.handle&&f.handle.getFile))return`${API_BASE_URL}/api/v1/media/file?path=${encodeURIComponent(f.path)}`;const fid=f&&(f.file_id||f.fileId);return fid?`${API_BASE_URL}/api/v1/audio/download/${fid}`:null;};const toggleSynthDropdown=()=>{if(synthOpen){setSynthOpen(false);return;}setSynthOpen(true);if(synthListRef.current)return;setSynthLoading(true);(window.SonicAPI&&window.SonicAPI.listPlugins?window.SonicAPI.listPlugins():Promise.resolve({soundfonts:[]})).then(async data=>{const sfonts=data&&data.soundfonts||[];if(!sfonts.length){setSynthList([]);setSynthLoading(false);return;}const results=await Promise.all(sfonts.map(sf=>{const baseId=String(sf.id||'').replace('sf_','');return(window.SonicAPI.listSoundfontInstruments?window.SonicAPI.listSoundfontInstruments(baseId):Promise.resolve({presets:[]})).then(r=>({sf,presets:r&&r.presets||[]})).catch(()=>({sf,presets:[]}));}));setSynthList(results);setSynthLoading(false);}).catch(()=>{setSynthList([]);setSynthLoading(false);});};const selectSynthInst=inst=>{setSynthInst(inst);setSynthOpen(false);localStorage.setItem('studio_media_explorer_synth',JSON.stringify(inst));};const playMidiPreview=async(f,token)=>{// Play real MIDI file through selected synth instrument (SonicSF) -if(!f||!window.SonicSF)return;try{const buf=await readLocalFileBuffer(f);if(!buf)return;if(selectTokenRef.current!==(token||selectTokenRef.current))return;const midiResult=(typeof parseMidiFile==='function'?parseMidiFile:window.parseMidiFile)(buf);if(!midiResult||!midiResult.length)return;const ctx=getAudioContext();const bpmVal=tempoRef.current||parseInt(synthInst&&synthInst.bpm)||120;const secondsPerBeat=60.0/bpmVal;const startWallTime=ctx.currentTime+0.05;const program=synthInst?synthInst.program:undefined;const sfId=synthInst?synthInst.sfId:undefined;const bank=synthInst?synthInst.bank:0;if(synthInst&&window.SonicSF.selectInstrument){try{await window.SonicSF.selectInstrument(0,bank,program,sfId);}catch(e2){}}// Re-check token after the async await — stale playMidiPreview (older file) +browseComputerDir(parts.length?parts.join('\\'):computerPath.split(/[\\/]/)[0]+'\\');}};const readLocalFileBuffer=async f=>{if(f&&f.handle&&typeof f.handle.getFile==='function'){const file=await f.handle.getFile();return await file.arrayBuffer();}const url=filePreviewUrl(f);if(!url)return null;const resp=await fetch(url);return await resp.arrayBuffer();};const filePreviewUrl=f=>{if(f&&f.path&&!(f.handle&&f.handle.getFile))return`${API_BASE_URL}/api/v1/media/file?path=${encodeURIComponent(f.path)}`;const fid=f&&(f.file_id||f.fileId);return fid?`${API_BASE_URL}/api/v1/audio/download/${fid}`:null;};const toggleSynthDropdown=()=>{if(synthOpen){setSynthOpen(false);return;}setSynthOpen(true);if(synthListRef.current)return;setSynthLoading(true);(window.SonicAPI&&window.SonicAPI.listPlugins?window.SonicAPI.listPlugins():Promise.resolve({soundfonts:[]})).then(async data=>{const sfonts=data&&data.soundfonts||[];if(!sfonts.length){setSynthList([]);setSynthLoading(false);return;}const results=await Promise.all(sfonts.map(sf=>{const baseId=String(sf.id||'').replace('sf_','');return(window.SonicAPI.listSoundfontInstruments?window.SonicAPI.listSoundfontInstruments(baseId):Promise.resolve({presets:[]})).then(r=>({sf,presets:r&&r.presets||[]})).catch(()=>({sf,presets:[]}));}));setSynthList(results);setSynthLoading(false);}).catch(()=>{setSynthList([]);setSynthLoading(false);});};const selectSynthInst=inst=>{setSynthInst(inst);synthInstRef.current=inst;setSynthOpen(false);localStorage.setItem('studio_media_explorer_synth',JSON.stringify(inst));// Realtime: re-schedule current MIDI preview with the newly selected instrument +const cur=selectedRef.current;if(isPlayingRef.current&&cur&&isMidiFile(cur)&&(cur.handle||cur.path||cur.file_id||cur.fileId)){selectTokenRef.current++;const token=selectTokenRef.current;try{if(window.SonicSF&&typeof window.SonicSF.stopAll==='function')window.SonicSF.stopAll();}catch(e){}playMidiPreview(cur,token);}};const playMidiPreview=async(f,token)=>{// Play real MIDI file through selected synth instrument (SonicSF) +if(!f||!window.SonicSF)return;try{const buf=await readLocalFileBuffer(f);if(!buf)return;if(selectTokenRef.current!==(token||selectTokenRef.current))return;const midiResult=(typeof parseMidiFile==='function'?parseMidiFile:window.parseMidiFile)(buf);if(!midiResult||!midiResult.length)return;const ctx=getAudioContext();const bpmVal=tempoRef.current||120;const secondsPerBeat=60.0/bpmVal;const startWallTime=ctx.currentTime+0.05;const curInst=synthInstRef.current;const program=curInst?curInst.program:undefined;const sfId=curInst?curInst.sfId:undefined;const bank=curInst?curInst.bank:0;if(curInst&&window.SonicSF.selectInstrument){try{await window.SonicSF.selectInstrument(0,bank,program,sfId);}catch(e2){}}// Re-check token after the async await — stale playMidiPreview (older file) // must not schedule notes over the newly selected file. -if(selectTokenRef.current!==(token||selectTokenRef.current))return;const prog=synthInst&&synthInst.program!==undefined?synthInst.program:undefined;const eng=synthInst?{soundfont_id:sfId,soundfont_bank:bank,soundfont_program:prog!==undefined?prog:0}:undefined;midiResult.forEach(track=>{(track.notes||[]).forEach(note=>{const startSec=(note.start_beat||0)*secondsPerBeat;const durMs=Math.max(80,(note.duration_beats||1)*secondsPerBeat*1000);window.SonicSF.playNote(note.pitch||60,note.velocity||0.8,durMs,startWallTime+startSec,prog,null,0,eng);});});// Keep a fake clock so canvas playhead animates; loop uses playStateRef -playStateRef.current={source:null,ctx,startedAt:startWallTime,fakeStart:startWallTime,midiTotal:midiResult[0].duration||4};setMidiNotes(midiResult[0].notes||[]);setMidiTotal(midiResult[0].duration||4);setIsPlaying(true);setIsPaused(false);startCanvasClock();}catch(e){console.error('MIDI preview failed',e);}};const stopMediaPlayback=React.useCallback(()=>{if(playStateRef.current){try{if(playStateRef.current.source)playStateRef.current.source.stop();}catch(e){}try{if(playStateRef.current.source)playStateRef.current.source.disconnect();}catch(e){}playStateRef.current=null;}if(rafRef.current)cancelAnimationFrame(rafRef.current);rafRef.current=null;if(window.SonicSF&&typeof window.SonicSF.stopAll==='function'){try{window.SonicSF.stopAll();}catch(e){}}setIsPlaying(false);setIsPaused(false);},[]);const playSelected=async(f,token)=>{if(!f)return;stopMediaPlayback();if(isMidiFile(f)){if(f.handle||f.path||f.file_id||f.fileId){// Real MIDI file: play through selected synth instrument +if(selectTokenRef.current!==(token||selectTokenRef.current))return;const prog=curInst&&curInst.program!==undefined?curInst.program:undefined;const eng=curInst?{soundfont_id:sfId,soundfont_bank:bank,soundfont_program:prog!==undefined?prog:0}:undefined;const totalSec=midiResult[0].duration||4;const allNotes=[];midiResult.forEach(track=>{(track.notes||[]).forEach(note=>{allNotes.push(Object.assign({},note,{trackOffset:track.startTime||0}));});});const schedulePass=passStartTime=>{allNotes.forEach(note=>{const startSec=(note.start_beat||0)*secondsPerBeat+(note.trackOffset||0);const durMs=Math.max(80,(note.duration_beats||1)*secondsPerBeat*1000);window.SonicSF.playNote(note.pitch||60,note.velocity||0.8,durMs,passStartTime+startSec,prog,null,0,eng);});};schedulePass(startWallTime);// Loop scheduling +if(loopTimerRef.current){clearInterval(loopTimerRef.current);loopTimerRef.current=null;}if(isLooping){loopTimerRef.current=setInterval(()=>{if(selectTokenRef.current!==(token||selectTokenRef.current)){clearInterval(loopTimerRef.current);loopTimerRef.current=null;return;}if(!isPlayingRef.current||isPausedRef.current)return;const passStart=ctx.currentTime+0.05;schedulePass(passStart);playStateRef.current=Object.assign({},playStateRef.current,{startedAt:passStart,fakeStart:passStart});},Math.max(200,totalSec*1000));}// Keep a fake clock so canvas playhead animates; loop uses playStateRef +playStateRef.current={source:null,ctx,startedAt:startWallTime,fakeStart:startWallTime,midiTotal:totalSec};setMidiNotes(allNotes);setMidiTotal(totalSec);setMidiBars(midiResult[0].bars||1);setMidiTotalBeats(midiResult[0].totalBeats||16);setMidiFileBpm(midiResult[0].bpm||120);setIsPlaying(true);setIsPaused(false);startCanvasClock();}catch(e){console.error('MIDI preview failed',e);}};const stopMediaPlayback=React.useCallback(()=>{if(playStateRef.current){try{if(playStateRef.current.source)playStateRef.current.source.stop();}catch(e){}try{if(playStateRef.current.source)playStateRef.current.source.disconnect();}catch(e){}playStateRef.current=null;}if(rafRef.current)cancelAnimationFrame(rafRef.current);rafRef.current=null;if(loopTimerRef.current){clearInterval(loopTimerRef.current);loopTimerRef.current=null;}if(window.SonicSF&&typeof window.SonicSF.stopAll==='function'){try{window.SonicSF.stopAll();}catch(e){}}setIsPlaying(false);setIsPaused(false);},[]);const playSelected=async(f,token)=>{if(!f)return;stopMediaPlayback();if(isMidiFile(f)){if(f.handle||f.path||f.file_id||f.fileId){// Real MIDI file: play through selected synth instrument await playMidiPreview(f,token);return;}playStateRef.current={source:null,ctx:null,fakeStart:performance.now()/1000};setIsPlaying(true);setIsPaused(false);startCanvasClock();return;}const fid=f.file_id||f.fileId;const buf=await readLocalFileBuffer(f);if(selectTokenRef.current!==(token||selectTokenRef.current))return;if(!buf)return;try{const ctx=getAudioContext();const decoded=await ctx.decodeAudioData(buf);if(selectTokenRef.current!==(token||selectTokenRef.current))return;setAudioBuffer(decoded);const src=ctx.createBufferSource();src.buffer=decoded;src.loop=isLooping;src.playbackRate.value=rate;const gain=ctx.createGain();const linear=volumeDb<=-50?0:Math.pow(10,volumeDb/20);gain.gain.value=linear;src.connect(gain);gain.connect(ctx.destination);src.start();const startedAt=ctx.currentTime;playStateRef.current={source:src,ctx,startedAt};setIsPlaying(true);setIsPaused(false);startCanvasClock();}catch(e){console.error('Preview failed',e);}};const togglePause=()=>{const st=playStateRef.current;if(!st)return;if(isPaused){if(st.ctx)st.ctx.resume();setIsPaused(false);}else{if(st.ctx)st.ctx.suspend();setIsPaused(true);}};const startCanvasClock=()=>{if(rafRef.current)cancelAnimationFrame(rafRef.current);const tick=()=>{rafRef.current=requestAnimationFrame(tick);let t=currentTimeRef.current;const st=playStateRef.current;if(st&&!isPausedRef.current){t=st.ctx?st.ctx.currentTime-st.startedAt:performance.now()/1000-st.fakeStart;}setCurrentTime(t);currentTimeRef.current=t;drawCanvas(t);};tick();};const drawCanvas=t=>{const canvas=canvasRef.current;if(!canvas)return;const ctx=canvas.getContext('2d');const w=canvas.clientWidth,h=canvas.clientHeight;if(!w||!h)return;canvas.width=w*2;canvas.height=h*2;ctx.scale(2,2);ctx.clearRect(0,0,w,h);ctx.fillStyle='#181818';ctx.fillRect(0,0,w,h);// Read from refs so the rAF clock's stale closure still draws the latest file -const f=selectedRef.current;const curPeaks=peaksRef.current;const curAudioBuffer=audioBufferRef.current;const curMidiNotes=midiNotesRef.current;const curMidiTotal=midiTotalRef.current;const curTempo=tempoRef.current;const playing=isPlayingRef.current;if(!f){ctx.fillStyle='#555';ctx.font='12px JetBrains Mono, monospace';ctx.fillText('No file selected',10,h/2);return;}const dur=fileDuration(f);if(isMidiFile(f)){ctx.strokeStyle='#333';for(let y=0;yw&&dur>0){offset=Math.max(0,Math.min(contentW-w,t*pxPerSec-w/2));}for(let b=0;b<=beats;b+=4){const x=b*pxPerBeat-offset;if(x<-10||x>w+10)continue;ctx.beginPath();ctx.moveTo(x,0);ctx.lineTo(x,h-14);ctx.stroke();}ctx.fillStyle='#9ca3af';if(curMidiNotes&&curMidiNotes.length){// Real piano-roll: rows = pitches (48..84), columns = beats +const f=selectedRef.current;const curPeaks=peaksRef.current;const curAudioBuffer=audioBufferRef.current;const curMidiNotes=midiNotesRef.current;const curMidiTotal=midiTotalRef.current;const curMidiBars=midiBarsRef.current;const curMidiTotalBeats=midiTotalBeatsRef.current;const curTempo=tempoRef.current;const playing=isPlayingRef.current;if(!f){ctx.fillStyle='#555';ctx.font='12px JetBrains Mono, monospace';ctx.fillText('No file selected',10,h/2);return;}const dur=fileDuration(f);if(isMidiFile(f)){ctx.strokeStyle='#333';for(let y=0;y0?curMidiTotalBeats:Math.max(curMidiTotal*bpmV/60,4);const beats=Math.max(totalBeats,4);const contentW=Math.max(w,beats*pxPerBeat);const pxPerSec=pxPerBeat*bpmV/60;let offset=0;if(playing&&contentW>w&&dur>0){offset=Math.max(0,Math.min(contentW-w,t*pxPerSec-w/2));}// bar lines (every 4 beats) + beat labels +for(let b=0;b<=beats;b+=4){const x=b*pxPerBeat-offset;if(x<-10||x>w+10)continue;ctx.beginPath();ctx.moveTo(x,0);ctx.lineTo(x,h-14);ctx.stroke();}ctx.fillStyle='#9ca3af';if(curMidiNotes&&curMidiNotes.length){// Real piano-roll: rows = pitches (48..84), columns = beats const pitchMin=48,pitchMax=84;const pitchRange=Math.max(1,pitchMax-pitchMin);curMidiNotes.forEach(n=>{const x=n.start_beat*pxPerBeat-offset;if(x<-30||x>w+30)return;const nw=Math.max(3,(n.duration_beats||1)*pxPerBeat);const y=h-14-8-(Math.min(pitchMax,Math.max(pitchMin,n.pitch))-pitchMin)/pitchRange*(h-30);ctx.fillRect(x,y,nw,5);});}else{const events=f.events||76;for(let i=0;iw?Math.min(w/2,t*pxPerSec):Math.min(w,t*pxPerSec);if(playing&&dur>0){ctx.fillStyle='#ef4444';ctx.fillRect(midiPlayheadX-1,0,2,h-14);}}else{const pk=curPeaks&&curPeaks.length>0?curPeaks:null;if(pk){const pxPerSec=50;const contentW=Math.max(w,dur*pxPerSec);let offset=0;if(playing&&contentW>w&&dur>0){offset=Math.max(0,Math.min(contentW-w,t*pxPerSec-w/2));}const mid=h/2;ctx.fillStyle='#22c55e';for(let i=0;iw+3)continue;const ph=Math.max(2,pk[i]*(h/2-4));ctx.fillRect(x,mid-ph,Math.max(1,w/pk.length),ph*2);}const audioPlayheadX=contentW>w?Math.min(w/2,t*pxPerSec):Math.min(w,t*pxPerSec);if(playing&&dur>0){ctx.fillStyle='#ef4444';ctx.fillRect(audioPlayheadX-1,0,2,h-14);}}else{ctx.fillStyle='#666';ctx.font='11px monospace';ctx.fillText('Waveform unavailable',10,h/2);}}// ruler -ctx.fillStyle='#111';ctx.fillRect(0,h-14,w,14);ctx.fillStyle='#888';ctx.font='9px JetBrains Mono, monospace';const rulerBpm=curTempo||120;const rulerPxPerBeat=isMidiFile(f)?42:50*60/rulerBpm;const rulerContentW=Math.max(w,dur*rulerPxPerBeat*rulerBpm/60);const rulerTotalBeats=Math.max(4,Math.ceil(dur*rulerBpm/60)||16);const rulerOffset=playing&&rulerContentW>w&&dur>0?Math.max(0,Math.min(rulerContentW-w,t*(rulerPxPerBeat*rulerBpm/60)-w/2)):0;for(let b=0;b<=rulerTotalBeats;b+=4){const x=b*rulerPxPerBeat-rulerOffset;if(x<-20||x>w+20)continue;ctx.fillText(String(Math.floor(b/4)),x+2,h-3);}};React.useEffect(()=>{drawCanvas(currentTime);},[peaks,audioBuffer,midiNotes,selected,folder,isPlaying]);React.useEffect(()=>()=>{if(rafRef.current)cancelAnimationFrame(rafRef.current);},[]);const handleSelect=f=>{if(!f||f.is_dir)return;selectTokenRef.current++;const token=selectTokenRef.current;setSelected(f);setCurrentTime(0);setPeaks(null);setAudioBuffer(null);setMidiNotes(null);stopMediaPlayback();if(f.kind==='other')return;if(autoPlay){playSelected(f,token);}if(!isMidiFile(f)&&(f.path||f.file_id||f.fileId))loadWaveform(f);};const renderComputerNode=(entry,depth,isRoot)=>{const nodePath=entry.path;const node=computerTree[nodePath];const expanded=node&&node.expanded;const dirs=node?node.dirs:[];const pad=12+depth*12;return/*#__PURE__*/React.createElement(React.Fragment,{key:nodePath},/*#__PURE__*/React.createElement("div",{className:`flex items-center gap-1 px-1 py-0.5 cursor-pointer rounded-sm ${computerPath===nodePath?'bg-slate-300 text-slate-900':'hover:bg-slate-200 text-slate-800'}`,style:{paddingLeft:pad},onClick:()=>browseComputerDir(entry),onDoubleClick:e=>{e.stopPropagation();toggleComputerDir(entry);}},/*#__PURE__*/React.createElement("i",{className:`fa-solid ${expanded?'fa-minus':'fa-plus'} text-[9px] text-slate-500 w-3 text-center shrink-0`,onClick:e=>{e.stopPropagation();toggleComputerDir(entry);}}),/*#__PURE__*/React.createElement("i",{className:`fa-solid ${isRoot?'fa-hard-drive text-[#6ea8dc]':'fa-folder text-[#d9a752]'} shrink-0`}),/*#__PURE__*/React.createElement("span",{className:"truncate"},entry.name)),expanded&&dirs.map(d=>renderComputerNode(d,depth+1,false)));};const toggleLoop=()=>{setIsLooping(prev=>{const next=!prev;if(playStateRef.current&&playStateRef.current.source)playStateRef.current.source.loop=next;return next;});};const toggleRate=dir=>setRate(prev=>Math.max(0.25,Math.min(4.0,Math.round((prev+dir*0.1)*100)/100)));const 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02',buffer:null,startTime:0,volumeDb:0,pan:0,muted:false,solo:false,color:'#1d4ed8',markers:[],serverFileId:null,clips:[],sections:[],midiItems:[],isArmed:false,monitoringEnabled:true,inputSource:{deviceType:'NONE',deviceId:''}}]);const[appWarningModal,setAppWarningModal]=useState(null);const[bpm,setBpm]=useState(localStorage.getItem('studio_bpm')||'120');const prevBpmRef=useRef(bpm);const[draggedClip,setDraggedClip]=useState(null);const[hoveredTrackId,setHoveredTrackId]=useState(null);// Recalculate item/section/selection durations when BPM changes useEffect(()=>{const oldSpb=prevBpmRef.current?60.0/parseFloat(prevBpmRef.current)*4:null;const bpmVal=parseFloat(bpm)||120;const secondsPerBar=60.0/bpmVal*4;// Recalculate range loop selection to maintain bar count (tempo mode only) if(oldSpb&&selectionFollowsTempo&&selectionStart!==null&&selectionEnd!==null&&selectionEnd>selectionStart){const startBar=selectionStart/oldSpb;const endBar=selectionEnd/oldSpb;if(endBar-startBar>0.01){setSelectionStart(startBar*secondsPerBar);setSelectionEnd(endBar*secondsPerBar);}}prevBpmRef.current=bpm;// Force canvas redraw @@ -443,7 +449,7 @@ const handleHandleDragStart=(e,side)=>{e.preventDefault();e.stopPropagation();co const toggleTrackSoloEvaluate=trackId=>{const wasPlaying=isPlaying;const playingSubTab=subTabs.find(s=>s.isPlaying&&s.type==='PIANO_ROLL');stopAllPlayback();setTracks(prev=>prev.map(t=>t.id===trackId?{...t,solo:!t.solo,muted:false}:t));setTimeout(()=>{const soloCtx=getAudioContext();if(wasPlaying){startOffsetTimeRef.current=currentTime;startAudioTimeRef.current=soloCtx.currentTime;startBufferOffsetRef.current=currentTime;setIsPlaying(true);startTrackPlayback(currentTime);}if(playingSubTab){const prSt=subTabs.find(s=>s.id===playingSubTab.id);if(prSt){const prOffset=prSt.currentTime||0;startOffsetTimeRef.current=prOffset;startAudioTimeRef.current=soloCtx.currentTime;startBufferOffsetRef.current=prOffset*(prSt.speed||1.0);schedulePianoRollMidi(prSt,prOffset);startSubTabPlayback(prSt,prOffset);setSubTabs(prev=>prev.map(s=>s.id===prSt.id?Object.assign({},s,{isPlaying:true,currentTime:prOffset}):s));}}},60);setTimeout(()=>lucide.createIcons(),50);};const toggleTrackMute=trackId=>{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,muted:!t.muted}:t));setUndoStack(prev=>{const next=[...prev,{action_type:'MUTE',track_id:trackId,timestamp:Date.now(),before_state:beforeSnap,after_state:captureTrackSnapshot(trackId)}];if(next.length>MAX_UNDO)next.shift();return next;});setTimeout(()=>lucide.createIcons(),50);};const updateTrackProp=(trackId,props)=>{setTracks(prev=>prev.map(t=>t.id===trackId?{...t,...props}:t));setTimeout(()=>lucide.createIcons(),50);};const toggleTrackDrum=trackId=>{var mt=tracks||[];var tidx=mt.findIndex(function(tr){return tr.id===trackId;});if(tidx<0)tidx=0;setTracks(prev=>prev.map(t=>{if(t.id!==trackId)return t;const becomingPercussion=!t.is_percussion;let newBank=becomingPercussion?128:t._saved_sf_bank!==undefined?t._saved_sf_bank:0;let newProgram=becomingPercussion?0:t._saved_sf_program!==undefined?t._saved_sf_program:0;let newCh=becomingPercussion?9:t._saved_sf_channel!==undefined?t._saved_sf_channel:tidx%16;return{...t,is_percussion:becomingPercussion,soundfont_bank:newBank,instrumentProgram:newProgram,midiChannel:newCh,_saved_sf_bank:becomingPercussion?t.soundfont_bank:t._saved_sf_bank,_saved_sf_program:becomingPercussion?t.instrumentProgram:t._saved_sf_program,_saved_sf_channel:becomingPercussion?t.midiChannel:t._saved_sf_channel,synth_engine:t.synth_engine?{...t.synth_engine,soundfont_bank:newBank,soundfont_program:newProgram}:t.synth_engine};}));setTimeout(()=>lucide.createIcons(),50);};const updateTrackVolumeDb=(trackId,val)=>{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,volumeDb:val}:t));setUndoStack(prev=>{const next=[...prev,{action_type:'VOLUME_CHANGE',track_id:trackId,timestamp:Date.now(),before_state:beforeSnap,after_state:captureTrackSnapshot(trackId)}];if(next.length>MAX_UNDO)next.shift();return next;});// Real-time update during playback const nodes=activeTrackNodesRef.current[trackId];if(nodes){const volLinear=val<=-50?0:Math.pow(10,val/20);nodes.gainNode.gain.setValueAtTime(volLinear,getAudioContext().currentTime);}};const updateTrackPan=(trackId,val)=>{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,pan:val}:t));setUndoStack(prev=>{const next=[...prev,{action_type:'PAN_CHANGE',track_id:trackId,timestamp:Date.now(),before_state:beforeSnap,after_state:captureTrackSnapshot(trackId)}];if(next.length>MAX_UNDO)next.shift();return next;});// Real-time update during playback const nodes=activeTrackNodesRef.current[trackId];if(nodes){nodes.pannerNode.pan.setValueAtTime(val/100,getAudioContext().currentTime);}};const updateTrackName=(trackId,name)=>{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,name}:t));setUndoStack(prev=>{const next=[...prev,{action_type:'RENAME',track_id:trackId,timestamp:Date.now(),before_state:beforeSnap,after_state:captureTrackSnapshot(trackId)}];if(next.length>MAX_UNDO)next.shift();return next;});};const updateTrackColor=(trackId,color)=>{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,color}:t));setUndoStack(prev=>{const next=[...prev,{action_type:'RECOLOR',track_id:trackId,timestamp:Date.now(),before_state:beforeSnap,after_state:captureTrackSnapshot(trackId)}];if(next.length>MAX_UNDO)next.shift();return next;});};const updateClipName=(trackId,clipId,newName)=>{setTracks(prev=>prev.map(t=>{if(t.id!==trackId)return t;const clips=t.clips&&t.clips.length>0?t.clips:[];return{...t,clips:clips.map(c=>c.id===clipId?{...c,name:newName}:c)};}));};// ── MIDI .mid file parser ── -const parseMidiFile=arrayBuffer=>{const data=new Uint8Array(arrayBuffer);if(data.length<14)return null;var pos=0;var read32=function(){var v=data[pos]<<24|data[pos+1]<<16|data[pos+2]<<8|data[pos+3];pos+=4;return v;};var read16=function(){var v=data[pos]<<8|data[pos+1];pos+=2;return v;};var readVLQ=function(){var v=0,b;do{b=data[pos++];v=v<<7|b&0x7f;}while(b&0x80);return v;};var header=String.fromCharCode(data[0],data[1],data[2],data[3]);if(header!=='MThd')return null;pos=8;var fmt=read16();var numTracks=read16();var division=read16();var ticksPerBeat=division&0x8000?480:division||480;var bpm=120;var result=[];for(var t=0;tdata.length)break;var trkId=String.fromCharCode(data[pos],data[pos+1],data[pos+2],data[pos+3]);pos+=4;var trkLen=read32();var endPos=Math.min(pos+trkLen,data.length);if(trkId!=='MTrk'){pos=endPos;continue;}var absTicks=0;var runningStatus=0;var trackName='MIDI Track '+(t+1);var midiNotes=[];var pendingNotes={};var maxAbsTick=0;while(pos=0x80){if(status<0xf0){runningStatus=status;}pos++;}else{status=runningStatus;}var cmd=status>>4;if(cmd===0x9||cmd===0x8){var chan=status&0x0F;var pitch=data[pos++];var vel=pos0){pendingNotes[noteKey]={tick:absTicks,vel:vel};if(absTicks>maxAbsTick)maxAbsTick=absTicks;}else{var pn=pendingNotes[noteKey];if(pn){var durTicks=absTicks-pn.tick;if(durTicks<=0)durTicks=240;midiNotes.push({id:'mn_'+t+'_'+pitch+'_'+pn.tick,pitch:pitch,start_beat:pn.tick/ticksPerBeat,duration_beats:durTicks/ticksPerBeat,velocity:Math.min(1,pn.vel/127)});delete pendingNotes[noteKey];}}}else if(status>=0xc0&&status<0xe0){if(pos=0xe0&&status<0xf0){if(pos+2<=endPos)pos+=2;}else if(status>=0xa0&&status<0xc0){if(pos+2<=endPos)pos+=2;}else if(status>=0xf0&&status<0xf8){if(pos=endPos)break;var metaType=data[pos++];var metaLen=readVLQ();if(metaType===0x03){try{trackName=String.fromCharCode.apply(null,Array.from(data.subarray(pos,pos+metaLen)));}catch(e){}}else if(metaType===0x51&&pos+3<=endPos){bpm=Math.round(60000000/(data[pos]<<16|data[pos+1]<<8|data[pos+2]));}pos+=Math.min(metaLen,endPos-pos);}else{if(pos+2<=endPos)pos+=2;}}catch(e){pos=endPos;}}Object.keys(pendingNotes).forEach(function(k){var pn=pendingNotes[k];var parts=k.split('_');var p=parseInt(parts[1]);var dur=Math.max(240,maxAbsTick-pn.tick);midiNotes.push({id:'mn_'+t+'_'+p+'_'+pn.tick,pitch:p,start_beat:pn.tick/ticksPerBeat,duration_beats:dur/ticksPerBeat,velocity:Math.min(1,pn.vel/127)});});if(midiNotes.length>0){var lastEnd=0;midiNotes.forEach(function(n){var e=(n.start_beat+n.duration_beats)*60/bpm;if(e>lastEnd)lastEnd=e;});result.push({name:trackName,notes:midiNotes,duration:lastEnd||4,startTime:0,id:'midi_'+t+'_'+Date.now()});}pos=endPos;}return result.length>0?result:null;};window.parseMidiFile=parseMidiFile;// ── Load File on Track (with server upload) ── +const parseMidiFile=arrayBuffer=>{const data=new Uint8Array(arrayBuffer);if(data.length<14)return null;var pos=0;var read32=function(){var v=data[pos]<<24|data[pos+1]<<16|data[pos+2]<<8|data[pos+3];pos+=4;return v;};var read16=function(){var v=data[pos]<<8|data[pos+1];pos+=2;return v;};var readVLQ=function(){var v=0,b;do{b=data[pos++];v=v<<7|b&0x7f;}while(b&0x80);return v;};var header=String.fromCharCode(data[0],data[1],data[2],data[3]);if(header!=='MThd')return null;pos=8;var fmt=read16();var numTracks=read16();var division=read16();var ticksPerBeat=division&0x8000?480:division||480;var bpm=120;var result=[];for(var t=0;tdata.length)break;var trkId=String.fromCharCode(data[pos],data[pos+1],data[pos+2],data[pos+3]);pos+=4;var trkLen=read32();var endPos=Math.min(pos+trkLen,data.length);if(trkId!=='MTrk'){pos=endPos;continue;}var absTicks=0;var runningStatus=0;var trackName='MIDI Track '+(t+1);var midiNotes=[];var pendingNotes={};var maxAbsTick=0;while(pos=0x80){if(status<0xf0){runningStatus=status;}pos++;}else{status=runningStatus;}var cmd=status>>4;if(cmd===0x9||cmd===0x8){var chan=status&0x0F;var pitch=data[pos++];var vel=pos0){pendingNotes[noteKey]={tick:absTicks,vel:vel};if(absTicks>maxAbsTick)maxAbsTick=absTicks;}else{var pn=pendingNotes[noteKey];if(pn){var durTicks=absTicks-pn.tick;if(durTicks<=0)durTicks=240;midiNotes.push({id:'mn_'+t+'_'+pitch+'_'+pn.tick,pitch:pitch,start_beat:pn.tick/ticksPerBeat,duration_beats:durTicks/ticksPerBeat,velocity:Math.min(1,pn.vel/127)});delete pendingNotes[noteKey];}}}else if(status>=0xc0&&status<0xe0){if(pos=0xe0&&status<0xf0){if(pos+2<=endPos)pos+=2;}else if(status>=0xa0&&status<0xc0){if(pos+2<=endPos)pos+=2;}else if(status>=0xf0&&status<0xf8){if(pos=endPos)break;var metaType=data[pos++];var metaLen=readVLQ();if(metaType===0x03){try{trackName=String.fromCharCode.apply(null,Array.from(data.subarray(pos,pos+metaLen)));}catch(e){}}else if(metaType===0x51&&pos+3<=endPos){bpm=Math.round(60000000/(data[pos]<<16|data[pos+1]<<8|data[pos+2]));}pos+=Math.min(metaLen,endPos-pos);}else{if(pos+2<=endPos)pos+=2;}}catch(e){pos=endPos;}}Object.keys(pendingNotes).forEach(function(k){var pn=pendingNotes[k];var parts=k.split('_');var p=parseInt(parts[1]);var dur=Math.max(240,maxAbsTick-pn.tick);midiNotes.push({id:'mn_'+t+'_'+p+'_'+pn.tick,pitch:p,start_beat:pn.tick/ticksPerBeat,duration_beats:dur/ticksPerBeat,velocity:Math.min(1,pn.vel/127)});});if(midiNotes.length>0){var lastEnd=0;var maxEndBeat=0;midiNotes.forEach(function(n){var e=(n.start_beat+n.duration_beats)*60/bpm;if(e>lastEnd)lastEnd=e;var eb=n.start_beat+n.duration_beats;if(eb>maxEndBeat)maxEndBeat=eb;});result.push({name:trackName,notes:midiNotes,duration:lastEnd||4,startTime:0,id:'midi_'+t+'_'+Date.now(),totalBeats:maxEndBeat||16,bars:Math.max(1,Math.ceil((maxEndBeat||16)/4)),bpm:bpm,ticksPerBeat:ticksPerBeat});}pos=endPos;}return result.length>0?result:null;};window.parseMidiFile=parseMidiFile;// ── Load File on Track (with server upload) ── const loadFileOnTrack=async(trackId,file)=>{if(!file)return;var fileName=file.name||'';var isMidi=/\.mid$|\.midi$/i.test(fileName);showToast(`Đang nạp file ${fileName}...`,'info');try{if(isMidi){var arrayBuffer=await file.arrayBuffer();var midiResult=parseMidiFile(arrayBuffer);if(!midiResult||midiResult.length===0){showToast('Không tìm thấy nốt nhạc trong file MIDI.','error');return;}if(midiResult.length===1){updateActiveTracks(prev=>prev.map(function(t){if(t.id!==trackId)return t;return{...t,name:fileName,midiItems:[midiResult[0]]};}));showToast('Đã tải MIDI: '+fileName,'success');}else{var colors=['#0f766e','#1d4ed8','#701a75','#a21caf','#b45309','#ca8a04','#dc2626','#0891b2'];var firstDone=false;midiResult.forEach(function(midiItem,idx){if(!firstDone){updateActiveTracks(prev=>prev.map(function(t){if(t.id!==trackId)return t;return{...t,name:midiItem.name||fileName,midiItems:[midiItem]};}));firstDone=true;}else{var newId='midi_track_'+Date.now()+'_'+idx;updateActiveTracks(function(prev){var curLen=prev.length;return prev.concat([{id:newId,name:midiItem.name||'MIDI Track '+(idx+1),buffer:null,startTime:0,volumeDb:0,pan:0,muted:false,solo:false,color:colors[idx%colors.length],markers:[],serverFileId:null,clips:[],sections:[],midiItems:[midiItem],isArmed:false,monitoringEnabled:true,inputSource:{deviceType:'NONE',deviceId:''}}]);});}});showToast('Đã tải MIDI: '+midiResult.length+' tracks from '+fileName,'success');}return;}// Upload to server uploadToServer(file,trackId);// Decode locally for playback + analyze channels (stereo/mono) const{audioBuffer:decodedBuffer,channelInfo}=await window.SonicAudio.decodeAudioFile(file);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,name:fileName,buffer:decodedBuffer,channelInfo:channelInfo}:t));showToast(`Nạp file thành công: ${fileName} (${channelInfo.label})`,'success');}catch(err){showToast(isMidi?"Lỗi giải mã MIDI.":"Lỗi giải mã âm thanh. Định dạng file không tương thích.",'error');}};// ── Drop MIDI file → create new track(s) ── diff --git a/app/templates/index.html b/app/templates/index.html index 9709565..ae51870 100644 --- a/app/templates/index.html +++ b/app/templates/index.html @@ -8,6 +8,7 @@ + @@ -23,7 +24,7 @@ - +