diff --git a/app/static/js/app.jsx b/app/static/js/app.jsx index 4933c54..3fd9fa7 100644 --- a/app/static/js/app.jsx +++ b/app/static/js/app.jsx @@ -136,6 +136,51 @@ function setTrackNodeGain(node, gainLinear) { node.gainNode.gain.setTargetAtTime(gainLinear, t, 0.02); } +// MAIN SESSION end-time (seconds): endtime of the items ON the session's own +// tracks only — audio clips, MIDI items, and section-item bounds. Section-TAB +// content is deliberately IGNORED here: when played inside the main session the +// sub-track items are clamped to their section bounds, so a long SECTION-TAB +// must NOT stretch the main project. The SECTION-TAB duration is computed +// separately from ITS OWN tracks (see maxDuration useMemo). +function computeMainSessionEndTime(tracksList) { + let max = 0; + const midiEnd = m => { + if (m && typeof m.endTime === 'number') return m.endTime; + return (m && m.startTime || 0) + (m && typeof m.duration === 'number' ? m.duration : 4); + }; + (tracksList || []).forEach(t => { + const clips = t.clips && t.clips.length > 0 ? t.clips : t.buffer ? [{ + id: 'default', buffer: t.buffer, startTime: t.startTime || 0, speed: t.speed || 1.0 + }] : []; + clips.forEach(c => { + if (c.buffer) max = Math.max(max, (c.startTime || 0) + c.buffer.duration / (c.speed || 1.0)); + }); + (t.midiItems || []).forEach(m => { max = Math.max(max, midiEnd(m)); }); + (t.sections || []).forEach(s => { max = Math.max(max, (s.start || 0) + (s.duration || 0)); }); + }); + return max; +} + +// Signature of all item positions/speeds/durations on the given tracks (+ the +// content inside section tabs). Compared against the signature captured at +// schedule time: when they differ mid-playback the loop re-schedules so moved +// items play at their NEW position instead of the stale one. +function buildItemsSignature(tracksList, tabsList) { + const tSig = t => { + const clips = (t.clips || []).map(c => c.id + ':' + Math.round((c.startTime || 0) * 100) + ':' + Math.round((c.speed || 1) * 100)).join(','); + const midi = (t.midiItems || []).map(m => m.id + ':' + Math.round((m.startTime || 0) * 100)).join(','); + const secs = (t.sections || []).map(s => s.id + ':' + Math.round((s.start || 0) * 100) + ':' + Math.round((s.duration || 0) * 100)).join(','); + // Track-level default clip (track.buffer): vị trí lưu ở track.startTime — + // KHÔNG nằm trong t.clips, phải đưa vào signature nếu không kéo default + // clip sẽ không kích hoạt re-schedule (vẫn phát nội dung cũ). + const defClip = (t.buffer ? 'def:' + Math.round((t.startTime || 0) * 100) + ':' + Math.round((t.speed || 1) * 100) : ''); + return clips + '|' + midi + '|' + secs + '|' + defClip; + }; + let s = (tracksList || []).map(tSig).join(';'); + s += '##' + (tabsList || []).map(st => (st.tracks || []).map(tSig).join(';')).join('|'); + return s; +} + // Reusable time-domain buffers for the imager vectorscope/correlation meter // (leftAnalyser/rightAnalyser are fixed at fftSize 2048) — allocated once so // the 60fps render loop does not churn the GC. @@ -3799,7 +3844,9 @@ const SubTabWaveform = ({ stretchStartRef.current = { mouseX, originalDuration: bufDuration, - originalSpeed: speed + originalSpeed: speed, + finalSpeed: speed, + clipName: name || 'clip' }; canvas.style.cursor = 'ew-resize'; const handleMouseMove = moveEvent => { @@ -3808,13 +3855,33 @@ const SubTabWaveform = ({ const deltaX = currentX - stretchStartRef.current.mouseX; const newWClip = Math.max(10, wClipPx + deltaX); const newSpeed = stretchStartRef.current.originalDuration / (newWClip / zoom); - if (onSpeedChange) onSpeedChange(Math.max(0.05, Math.min(10, newSpeed))); + stretchStartRef.current.finalSpeed = Math.max(0.05, Math.min(10, newSpeed)); + if (onSpeedChange) onSpeedChange(stretchStartRef.current.finalSpeed); }; const handleMouseUp = () => { isStretchingRef.current = false; canvas.style.cursor = 'default'; document.removeEventListener('mousemove', handleMouseMove); document.removeEventListener('mouseup', handleMouseUp); + // UNDO/REDO cho alt-click-drag speed stretch: entry SET_CLIP_SPEED — + // undo về speed gốc, redo về speed cuối (onSpeedChange tự tính lại + // volumeNodes/panningNodes/fade/label theo ratio nên khớp 2 chiều). + const st = stretchStartRef.current; + if (st && typeof st.originalSpeed === 'number' && window.UndoRedoEngine) { + const finalSpeed = st.finalSpeed || st.originalSpeed; + if (Math.abs(finalSpeed - st.originalSpeed) > 0.001) { + window.UndoRedoEngine.execute({ + type: 'SET_CLIP_SPEED', + scope: 'section_tab', + label: `Speed ${Math.round(st.originalSpeed * 100)}% → ${Math.round(finalSpeed * 100)}% (${st.clipName})`, + before: st.originalSpeed, + after: finalSpeed, + undo: e => { if (onSpeedChange) onSpeedChange(e.before); }, + redo: e => { if (onSpeedChange) onSpeedChange(e.after); } + }); + } + } + stretchStartRef.current = null; }; document.addEventListener('mousemove', handleMouseMove); document.addEventListener('mouseup', handleMouseUp); @@ -9426,6 +9493,101 @@ const InteractiveEqPro = ({ track, params, onChange, getModule, applyTo, spectru ); }; +const ExportModal = ({ open, onClose, exportSettings, setExportSettings, isExporting, onExport, onBounce }) => { + if (!open) return null; + return ( +
+
e.stopPropagation()}> +
+ + EXPORT + + +
+
+
+
+ + +
+
+ + +
+
+ {exportSettings.format === 'wav' ? ( +
+
+ + +
+
+ + +
+
+ ) : ( +
+
+ + +
+
+
+ )} +
+
+ + +
+
+
+
+ + +
+
+
+
+ ); +}; + const FXRackModal = ({ track, onUpdateTrack, onClose }) => { const [activeType, setActiveType] = React.useState('eq'); const [addModuleOpen, setAddModuleOpen] = React.useState(false); @@ -13403,7 +13565,17 @@ const App = () => { const [localSelectionTrackId, setLocalSelectionTrackId] = useState(null); const [localSelectionStart, setLocalSelectionStart] = useState(null); const [localSelectionEnd, setLocalSelectionEnd] = useState(null); - const [zoom, setZoom] = useState(100); + const [zoom, setZoom] = useState(() => { + // Persist zoom qua reload (user yêu cầu giữ kích thước items sau refresh) + try { + const v = parseFloat(localStorage.getItem('sf_zoom')); + if (isFinite(v) && v > 0) return v; + } catch (e) { } + return 100; + }); + React.useEffect(() => { + try { localStorage.setItem('sf_zoom', String(zoom)); } catch (e) { } + }, [zoom]); const [isLoopingSelection, setIsLoopingSelection] = useState(false); const [beginBar, setBeginBar] = useState(0); const [endBar, setEndBar] = useState(0); @@ -17065,38 +17237,60 @@ const App = () => { leadInMarginRef.current = 0; const maxDuration = useMemo(() => { const secPerBar = (60.0 / (parseInt(bpm) || 120)) * 4; - const cur = activeTracks; - let max = 10; - cur.forEach(t => { - const clips = t.clips && t.clips.length > 0 ? t.clips : t.buffer ? [{ - id: 'default', - buffer: t.buffer, - startTime: t.startTime || 0, - name: t.name, - speed: t.speed || 1.0 - }] : []; - clips.forEach(c => { - if (c.buffer) { - const cStart = c.startTime || 0; - const cDur = c.buffer.duration / (c.speed || 1.0); - max = Math.max(max, cStart + cDur); - } - }); - (t.midiItems || []).forEach(m => { - max = Math.max(max, (m.startTime || 0) + (m.duration || 4)); - }); - (t.sections || []).forEach(s => { - max = Math.max(max, (s.start || 0) + (s.duration || 4)); - }); - }); + // MAIN SESSION: endtime của items trên track MAIN (mặc kệ SECTION-TAB dài bao nhiêu — + // sub-track items bị clamp trong section bounds khi play trong main session). + // SECTION-TAB: endtime của items trên track CỦA TAB (tính theo vị trí section trên main). + let max; + if (activeTab === 'main') { + max = computeMainSessionEndTime(activeTracks); + } else { + const tab = sessionTabs.find(st => st.id === activeTab); + const tabMax = tab ? computeMainSessionEndTime(tab.tracks || []) : 0; + let secStart = 0; + const secRef = tab ? tab.sectionId : null; + if (secRef) { + activeTracks.forEach(t => (t.sections || []).forEach(s => { + if (s.sectionId === secRef || s.id === secRef) secStart = s.start || 0; + })); + } + max = secStart + tabMax; + } if (recordingState === 'RECORDING' || recordingState === 'COUNT_IN') { max = Math.max(max, currentTime + 60); } max += secPerBar * 12 + scrollBufferExtra; return max; - }, [activeTracks, recordingState, currentTime, bpm, scrollBufferExtra]); + }, [activeTab, activeTracks, sessionTabs, recordingState, currentTime, bpm, scrollBufferExtra]); const maxDurationRef = useRef(maxDuration); maxDurationRef.current = maxDuration; + // ── Project REAL end-time (KHÔNG buffer) ── + // maxDuration ở trên cộng 12 bars + scrollBuffer cho vùng SCROLL/ZOOM; nếu + // dùng nó làm điểm dừng LOOP thì loop kéo dài quá duration thật. projectEnd + // = endtime của session (main: items trên track main; section-tab: secStart + + // items của tab) — dùng cho updatePlayhead dừng/loop lại đúng cuối bài. + const projectEnd = useMemo(() => { + let max; + if (activeTab === 'main') { + max = computeMainSessionEndTime(activeTracks); + } else { + const tab = sessionTabs.find(st => st.id === activeTab); + const tabMax = tab ? computeMainSessionEndTime(tab.tracks || []) : 0; + let secStart = 0; + const secRef = tab ? tab.sectionId : null; + if (secRef) { + activeTracks.forEach(t => (t.sections || []).forEach(s => { + if (s.sectionId === secRef || s.id === secRef) secStart = s.start || 0; + })); + } + max = secStart + tabMax; + } + if (recordingState === 'RECORDING' || recordingState === 'COUNT_IN') { + max = Math.max(max, currentTime + 60); + } + return Math.max(1, max); + }, [activeTab, activeTracks, sessionTabs, recordingState, currentTime]); + const projectEndRef = useRef(projectEnd); + projectEndRef.current = projectEnd; const minZoom = useMemo(() => { return viewportWidth / maxDuration; }, [viewportWidth, maxDuration]); @@ -17377,7 +17571,64 @@ const App = () => { } }; + // Realtime re-schedule tracking (loop play cập nhật khi items đổi vị trí) + const scheduledItemsSigRef = React.useRef(''); + const playheadFrameCountRef = React.useRef(0); + const pendingRescheduleRef = React.useRef(null); + const lastRescheduleTimeRef = React.useRef(0); + // Re-schedule NGAY (reset cooldown) sau khi THẢ chuột — check kế tiếp trong + // updatePlayhead (~100ms) re-schedule luôn. + const triggerRescheduleNow = () => { + try { + lastRescheduleTimeRef.current = 0; + } catch (e) { } + }; + const updatePlayhead = () => { + // Realtime re-schedule: khi đang play (loop play) mà items (vị trí/speed/ + // duration — kể cả nội dung section tab) thay đổi → dừng + schedule lại từ + // playhead hiện tại để item mới phát đúng vị trí mới (không phát nội dung + // cũ ở vị trí cũ). Kiểm tra ~10fps (mỗi 6 frame) để kéo item cập nhật gần + // như realtime mà không tốn CPU mỗi frame. + if (isPlaying && activeTabRef.current === 'main' && recordingStateRef.current !== 'RECORDING') { + playheadFrameCountRef.current++; + if (playheadFrameCountRef.current % 6 === 0) { + // ⚠️ Dùng REFS (không phải state closure) — rAF loop giữ updatePlayhead + // của render cũ nên activeTracks/sessionTabs trong closure là STALE → + // signature không bao giờ đổi khi kéo item → không re-schedule. + const sig = buildItemsSignature(activeTracksRef.current, sessionTabsRef.current); + if (sig !== scheduledItemsSigRef.current) { + // THROTTLE ~300ms: re-schedule định kỳ NGAY CẢ TRONG LÚC KÉO (clip + // kéo đi → âm thanh cũ dừng ≤300ms, clip mới phát khi playhead tới + // vị trí mới — realtime) mà không stop/start mỗi frame (giật). Sau + // khi thả chuột triggerRescheduleNow reset cooldown → re-schedule + // ở check kế tiếp (~100ms). + const nowT = performance.now(); + if (nowT - (lastRescheduleTimeRef.current || 0) > 300) { + lastRescheduleTimeRef.current = nowT; + scheduledItemsSigRef.current = sig; + const pt = currentTimeRef.current; + stopAllPlayback(); + setIsPlaying(true); + // Re-schedule theo ĐÚNG chế độ play hiện tại: loop local / solo chỉ + // phát track liên quan (không phát nhầm track khác); ngược lại play + // toàn session. Cả 2 hàm đều tính playOffset = pt − clip.startTime + // → clip vừa kéo tới đúng playhead phát TỪ ĐẦU clip (realtime). + const curTracks = activeTracksRef.current || activeTracks; + const soloed = curTracks.some(t => t.solo); + if (soloed) { + curTracks.filter(t => t.solo).forEach(t => startLocalTrackPlayback(t.id, pt)); + } else if (selectionMode === 'local' && localSelectionTrackId) { + startLocalTrackPlayback(localSelectionTrackId, pt); + } else { + startTrackPlayback(pt); + } + } + } else { + pendingRescheduleRef.current = null; + } + } + } if (recordingStateRef.current === 'RECORDING') { const audioCtx = getAudioContext(); const lookahead = 0.1; // 100ms @@ -17532,7 +17783,9 @@ const App = () => { return; } } - if (updatedTime >= maxDurationRef.current) { + // Hết bài: dừng/loop lại tại ENDTIME THẬT của session (projectEnd — không + // buffer 12 bars như maxDuration dùng cho scroll/zoom). + if (updatedTime >= projectEndRef.current) { if (recordingStateRef.current === 'RECORDING') { setCurrentTime(updatedTime); animationFrameIdRef.current = requestAnimationFrame(updatePlayhead); @@ -17949,6 +18202,10 @@ const App = () => { const startTrackPlayback = offsetTime => { const context = getAudioContext(); const allPlayTracks = activeTracksRef.current && activeTracksRef.current.length ? activeTracksRef.current : activeTracks; + // Capture items signature at schedule time — updatePlayhead so sánh với + // signature này để phát hiện items đổi vị trí giữa lúc play (re-schedule). + scheduledItemsSigRef.current = buildItemsSignature(allPlayTracks, sessionTabs); + console.log('[Play] offset=' + offsetTime + ' tracks=' + allPlayTracks.length + ' masterBus=' + !!masterBus + ' dest=' + (context.destination ? 'ok' : 'MISSING')); const hasSolo = allPlayTracks.some(t => t.solo); allPlayTracks.forEach(track => { const isPlayable = hasSolo ? track.solo : !track.muted; @@ -17956,6 +18213,7 @@ const App = () => { const gainNode = getOrCreateTrackNode(track, context); const pannerNode = activeTrackNodesRef.current[track.id].pannerNode; + console.log('[Play] track', track.id, track.name, 'node ok:', !!(gainNode && pannerNode), 'muted:', track.muted); const clips = track.clips && track.clips.length > 0 ? track.clips : track.buffer ? [{ id: 'default', buffer: track.buffer, @@ -19396,6 +19654,9 @@ const App = () => { pushAction('MOVE_CLIP', drag.trackId, drag.beforeSnap, afterSnap); setDraggedClip(null); showToast('Đã di chuyển clip.', 'success'); + // Realtime: clip vừa thả — re-schedule NGAY để phát theo vị trí mới + // (kéo clip về đúng playhead → phát ngay, không chờ debounce). + triggerRescheduleNow(); }; document.addEventListener('mousemove', handleMouseMove); document.addEventListener('mouseup', handleMouseUp); @@ -19789,6 +20050,8 @@ const App = () => { var afterSnap = captureAllTracksSnapshot(); pushAction('MOVE_ITEM', 'ALL_TRACKS', drag.beforeSnap || beforeSnap, afterSnap); } + // Realtime: items vừa thả — re-schedule NGAY theo vị trí mới. + triggerRescheduleNow(); if (drag.itemType === 'midiItem') { let finalTrackId = null; const curTrks = activeTracksRef.current || activeTracks; @@ -21010,15 +21273,9 @@ const App = () => { const audioCtx = getAudioContext(); try { const allTracks = (activeTracksRef.current && activeTracksRef.current.length) ? activeTracksRef.current : tracks; - let durationLimit = 1.0; - allTracks.forEach(t => { - const clips = t.clips && t.clips.length > 0 ? t.clips : t.buffer ? [{ startTime: t.startTime || 0, buffer: t.buffer, speed: t.speed || 1.0 }] : []; - clips.forEach(c => { if (c.buffer) durationLimit = Math.max(durationLimit, (c.startTime || 0) + c.buffer.duration / (c.speed || 1.0)); }); - (t.midiItems || []).forEach(m => { if (m.endTime) durationLimit = Math.max(durationLimit, m.endTime); else if (m.startTime) durationLimit = Math.max(durationLimit, m.startTime + (m.duration || 8)); }); - }); - (sessionTabs || []).forEach(s => (s.tracks || []).forEach(t => { - (t.midiItems || []).forEach(m => { if (m.endTime) durationLimit = Math.max(durationLimit, m.endTime); else if (m.startTime) durationLimit = Math.max(durationLimit, m.startTime + (m.duration || 8)); }); - })); + // MAIN SESSION end time (items trên track main — sections tính theo bounds, + // không kéo dài theo nội dung SECTION-TAB) — bounce không cắt sớm/cắt thiếu. + let durationLimit = Math.max(1.0, computeMainSessionEndTime(allTracks)); durationLimit += 1.2; // FX/mastering tail const captureRate = audioCtx.sampleRate || 44100; @@ -21244,17 +21501,9 @@ const App = () => { try { const targetRate = parseInt(exportSettings.sampleRate); const bitDepth = parseInt(exportSettings.bitDepth); - const durationLimit = Math.max(...activeTracks.map(t => { - const clips = t.clips && t.clips.length > 0 ? t.clips : t.buffer ? [{ - id: 'default', - buffer: t.buffer, - startTime: t.startTime || 0, - name: t.name, - speed: t.speed || 1.0 - }] : []; - if (clips.length === 0) return 0; - return Math.max(...clips.map(c => (c.startTime || 0) + c.buffer.duration / (c.speed || 1.0))); - })); + // MAIN SESSION end time (items trên track main — sections theo bounds) — + // offline render không cắt sớm; MIDI cache (preview) giữ max với cache. + let durationLimit = Math.max(0.1, computeMainSessionEndTime(activeTracks)); // Include preview-captured MIDI cache length (soundfont tracks have no clips) Object.keys(midiCacheRef.current).forEach(id => { const c = midiCacheRef.current[id]; @@ -24139,23 +24388,14 @@ const App = () => { const hasSel = (selectionMode === 'local' && selLeft !== null && selRight !== null && selRight > selLeft) || (selectionStart !== null && selectionEnd !== null); if (!hasSel) { - const bpmVal = parseInt(bpm) || 120; - const secPerBar = (60.0 / bpmVal) * 4; - let maxEnd = 0; - activeTracks.forEach(t => { - (t.clips || []).forEach(c => { - const end = (c.startTime || 0) + (c.duration || 0); - if (end > maxEnd) maxEnd = end; - }); - (t.items || []).forEach(it => { - const end = (it.start || 0) + (it.duration || 4); - if (end > maxEnd) maxEnd = end; - }); - }); + // Auto-derive loop region = ĐÚNG endtime của session (items trên + // track main: clips theo buffer.duration/speed, midiItems, section + // bounds) — KHÔNG cộng thêm bars buffer (loop không được dài hơn + // duration hiện có). + const maxEnd = computeMainSessionEndTime(activeTracks); if (maxEnd > 0) { - const loopEnd = maxEnd + secPerBar * 2; setSelectionStart(0); - setSelectionEnd(loopEnd); + setSelectionEnd(maxEnd); } } } @@ -26054,28 +26294,7 @@ const App = () => { })())), /*#__PURE__*/React.createElement("div", { className: "w-1 cursor-ew-resize hover:bg-cyan-500/50 active:bg-cyan-400 transition-colors shrink-0 z-10", onMouseDown: startColResize - }), renderDock('right', 'Right')), renderDock('bottom', 'Bottom'), (showExportPanel && /*#__PURE__*/React.createElement("div", { - className: "fixed inset-0 z-[300] bg-black/70 backdrop-blur-sm flex items-center justify-center p-6", - onClick: () => setShowExportPanel(false) - }, /*#__PURE__*/React.createElement("div", { - className: "w-full max-w-2xl bg-slate-900 border border-slate-700 rounded-2xl shadow-2xl overflow-hidden", - onClick: e => e.stopPropagation() - }, /*#__PURE__*/React.createElement("div", { - className: "h-9 bg-slate-800/80 border-b border-slate-700 flex items-center justify-between px-3 select-none" - }, /*#__PURE__*/React.createElement("span", { - className: "text-xs font-bold text-cyan-300 font-mono flex items-center gap-1.5" - }, /*#__PURE__*/React.createElement("i", { - "data-lucide": "download-cloud", - className: "w-3.5 h-3.5" - }), " EXPORT"), /*#__PURE__*/React.createElement("button", { - onClick: () => setShowExportPanel(false), - className: "text-zinc-400 hover:text-white" - }, /*#__PURE__*/React.createElement("i", { - "data-lucide": "x", - className: "w-4 h-4" - }))), /*#__PURE__*/React.createElement("div", { - className: "p-4 max-h-[72vh] overflow-y-auto" - }, renderPanelContent('export'))))), showMixer && /*#__PURE__*/React.createElement("div", { + }), renderDock('right', 'Right')), renderDock('bottom', 'Bottom'), showMixer && /*#__PURE__*/React.createElement("div", { className: "flex flex-col border-t border-zinc-700 bg-slate-900 shrink-0 select-none", style: { height: mixerHeight + 'px' } }, /*#__PURE__*/React.createElement("div", { @@ -26643,6 +26862,14 @@ const App = () => { track: tracks.find(t => t.id === fxRackTarget.trackId) || null, onUpdateTrack: updateTrackProp, onClose: () => setFxRackTarget(null) + }), /*#__PURE__*/React.createElement(ExportModal, { + open: showExportPanel, + onClose: () => setShowExportPanel(false), + exportSettings: exportSettings, + setExportSettings: setExportSettings, + isExporting: isExporting, + onExport: triggerWavExport, + onBounce: triggerBounceExport }), instrumentSelectorTrackId && /*#__PURE__*/React.createElement("div", { className: "fixed inset-0 z-50 flex items-center justify-center bg-black/60 backdrop-blur-sm", onClick: closeInstrumentSelector diff --git a/app/static/js/app.precompiled.js b/app/static/js/app.precompiled.js index 3419dc8..0a94a43 100644 --- a/app/static/js/app.precompiled.js +++ b/app/static/js/app.precompiled.js @@ -23,7 +23,20 @@ function setMasteringRoute(route,bypass){if(!route)return;const on=!!bypass;try{ // of the CURRENT context. Solo semantics: if ANY track is soloed, only soloed // tracks are audible; muted tracks are always silent. function computeTrackAudibleGain(trackList,track){if(!track)return 0;if(track.muted)return 0;const hasSolo=(trackList||[]).some(t=>t.solo);if(hasSolo&&!track.solo)return 0;const volDb=track.volumeDb??0;return volDb<=-50?0:Math.pow(10,volDb/20);}// Apply a gain to a track node's gain with a short crossfade (click-free). -function setTrackNodeGain(node,gainLinear){if(!node||!node.gainNode||!audioCtx)return;const t=audioCtx.currentTime;node.gainNode.gain.cancelScheduledValues(t);node.gainNode.gain.setTargetAtTime(gainLinear,t,0.02);}// Reusable time-domain buffers for the imager vectorscope/correlation meter +function setTrackNodeGain(node,gainLinear){if(!node||!node.gainNode||!audioCtx)return;const t=audioCtx.currentTime;node.gainNode.gain.cancelScheduledValues(t);node.gainNode.gain.setTargetAtTime(gainLinear,t,0.02);}// MAIN SESSION end-time (seconds): endtime of the items ON the session's own +// tracks only — audio clips, MIDI items, and section-item bounds. Section-TAB +// content is deliberately IGNORED here: when played inside the main session the +// sub-track items are clamped to their section bounds, so a long SECTION-TAB +// must NOT stretch the main project. The SECTION-TAB duration is computed +// separately from ITS OWN tracks (see maxDuration useMemo). +function computeMainSessionEndTime(tracksList){let max=0;const midiEnd=m=>{if(m&&typeof m.endTime==='number')return m.endTime;return(m&&m.startTime||0)+(m&&typeof m.duration==='number'?m.duration:4);};(tracksList||[]).forEach(t=>{const clips=t.clips&&t.clips.length>0?t.clips:t.buffer?[{id:'default',buffer:t.buffer,startTime:t.startTime||0,speed:t.speed||1.0}]:[];clips.forEach(c=>{if(c.buffer)max=Math.max(max,(c.startTime||0)+c.buffer.duration/(c.speed||1.0));});(t.midiItems||[]).forEach(m=>{max=Math.max(max,midiEnd(m));});(t.sections||[]).forEach(s=>{max=Math.max(max,(s.start||0)+(s.duration||0));});});return max;}// Signature of all item positions/speeds/durations on the given tracks (+ the +// content inside section tabs). Compared against the signature captured at +// schedule time: when they differ mid-playback the loop re-schedules so moved +// items play at their NEW position instead of the stale one. +function buildItemsSignature(tracksList,tabsList){const tSig=t=>{const clips=(t.clips||[]).map(c=>c.id+':'+Math.round((c.startTime||0)*100)+':'+Math.round((c.speed||1)*100)).join(',');const midi=(t.midiItems||[]).map(m=>m.id+':'+Math.round((m.startTime||0)*100)).join(',');const secs=(t.sections||[]).map(s=>s.id+':'+Math.round((s.start||0)*100)+':'+Math.round((s.duration||0)*100)).join(',');// Track-level default clip (track.buffer): vị trí lưu ở track.startTime — +// KHÔNG nằm trong t.clips, phải đưa vào signature nếu không kéo default +// clip sẽ không kích hoạt re-schedule (vẫn phát nội dung cũ). +const defClip=t.buffer?'def:'+Math.round((t.startTime||0)*100)+':'+Math.round((t.speed||1)*100):'';return clips+'|'+midi+'|'+secs+'|'+defClip;};let s=(tracksList||[]).map(tSig).join(';');s+='##'+(tabsList||[]).map(st=>(st.tracks||[]).map(tSig).join(';')).join('|');return s;}// Reusable time-domain buffers for the imager vectorscope/correlation meter // (leftAnalyser/rightAnalyser are fixed at fftSize 2048) — allocated once so // the 60fps render loop does not churn the GC. const _imagerBufL=new Float32Array(2048);const _imagerBufR=new Float32Array(2048);// Real-time stereo correlation (−1.0 … +1.0) from the master output L/R @@ -267,7 +280,10 @@ if(selectionStart!==null&&selectionEnd!==null&&selectionStart!==selectionEnd){co if(currentTime!==null&¤tTime>=0&¤tTime<=buffer.duration/speed){const playheadPx=currentTime*zoom;ctx.strokeStyle='#ef4444';ctx.lineWidth=2;ctx.beginPath();ctx.moveTo(playheadPx,0);ctx.lineTo(playheadPx,h);ctx.stroke();}// Update TCP slider values in real-time to match the curve at currentTime const volInput=document.getElementById(`tcp-vol-${subTabId}`);const volLabel=document.getElementById(`tcp-vol-label-${subTabId}`);if(volInput&&volLabel){const dbVal=getVolumeDbAtTime(currentTime||0);volInput.value=dbVal.toFixed(1);volLabel.textContent=`${dbVal.toFixed(1)}dB`;}const panInput=document.getElementById(`tcp-pan-${subTabId}`);const panLabel=document.getElementById(`tcp-pan-label-${subTabId}`);if(panInput&&panLabel){const panVal=getPanningValueAtTime(currentTime||0);panInput.value=panVal;panLabel.textContent=panVal>0?'R':panVal<0?'L':'C';const panLabelDetailed=document.getElementById(`tcp-pan-label-detailed-${subTabId}`);if(panLabelDetailed){panLabelDetailed.textContent=panVal>0?'R'+panVal:panVal<0?'L'+Math.abs(panVal):'C';}}},[buffer,currentTime,selectionStart,selectionEnd,zoom,timelineWidth,color,name,speed,volumeNodes,panningNodes,fadeInLen,fadeOutLen,graphMode,selectedNodeTime,subTabId]);const handleMouseDown=e=>{if(e.button===2)return;const canvas=canvasRef.current;const rect=canvas.getBoundingClientRect();const parent=canvas.parentElement;const scrollContainer=parent?parent.parentElement:null;const scrollLeft=scrollContainer?scrollContainer.scrollLeft:0;const bufDuration=buffer.duration;const wallDuration=bufDuration/(speed||1.0);const mouseX=e.clientX-rect.left+scrollLeft;const startTime=Math.max(0,Math.min(wallDuration,mouseX/zoom));// Shift + Click range selection in SubTab Waveform if(e.shiftKey){e.preventDefault();e.stopPropagation();const anchor=subTabAnchorRef.current!==null&&subTabAnchorRef.current!==undefined?subTabAnchorRef.current:selectionStart!==null&&selectionStart!==undefined?selectionStart:currentTime;const selS=Math.min(anchor,startTime);const selE=Math.max(anchor,startTime);onSelectRange(selS,selE);onPlayheadSet(startTime);return;}// Alt+Click near right edge → speed stretch -if(e.altKey&&onSpeedChange){const clipRightEdge=bufDuration/(speed||1.0)*zoom;const tolerance=8;if(Math.abs(mouseX-clipRightEdge)<=tolerance){isStretchingRef.current=true;stretchStartRef.current={mouseX,originalDuration:bufDuration,originalSpeed:speed};canvas.style.cursor='ew-resize';const handleMouseMove=moveEvent=>{const currentX=moveEvent.clientX-rect.left+scrollLeft;const wClipPx=stretchStartRef.current.originalDuration/stretchStartRef.current.originalSpeed*zoom;const deltaX=currentX-stretchStartRef.current.mouseX;const newWClip=Math.max(10,wClipPx+deltaX);const newSpeed=stretchStartRef.current.originalDuration/(newWClip/zoom);if(onSpeedChange)onSpeedChange(Math.max(0.05,Math.min(10,newSpeed)));};const handleMouseUp=()=>{isStretchingRef.current=false;canvas.style.cursor='default';document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return;}}// Mode toggle button click (bottom-right VOL/PAN) +if(e.altKey&&onSpeedChange){const clipRightEdge=bufDuration/(speed||1.0)*zoom;const tolerance=8;if(Math.abs(mouseX-clipRightEdge)<=tolerance){isStretchingRef.current=true;stretchStartRef.current={mouseX,originalDuration:bufDuration,originalSpeed:speed,finalSpeed:speed,clipName:name||'clip'};canvas.style.cursor='ew-resize';const handleMouseMove=moveEvent=>{const currentX=moveEvent.clientX-rect.left+scrollLeft;const wClipPx=stretchStartRef.current.originalDuration/stretchStartRef.current.originalSpeed*zoom;const deltaX=currentX-stretchStartRef.current.mouseX;const newWClip=Math.max(10,wClipPx+deltaX);const newSpeed=stretchStartRef.current.originalDuration/(newWClip/zoom);stretchStartRef.current.finalSpeed=Math.max(0.05,Math.min(10,newSpeed));if(onSpeedChange)onSpeedChange(stretchStartRef.current.finalSpeed);};const handleMouseUp=()=>{isStretchingRef.current=false;canvas.style.cursor='default';document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);// UNDO/REDO cho alt-click-drag speed stretch: entry SET_CLIP_SPEED — +// undo về speed gốc, redo về speed cuối (onSpeedChange tự tính lại +// volumeNodes/panningNodes/fade/label theo ratio nên khớp 2 chiều). +const st=stretchStartRef.current;if(st&&typeof st.originalSpeed==='number'&&window.UndoRedoEngine){const finalSpeed=st.finalSpeed||st.originalSpeed;if(Math.abs(finalSpeed-st.originalSpeed)>0.001){window.UndoRedoEngine.execute({type:'SET_CLIP_SPEED',scope:'section_tab',label:`Speed ${Math.round(st.originalSpeed*100)}% → ${Math.round(finalSpeed*100)}% (${st.clipName})`,before:st.originalSpeed,after:finalSpeed,undo:e=>{if(onSpeedChange)onSpeedChange(e.before);},redo:e=>{if(onSpeedChange)onSpeedChange(e.after);}});}}stretchStartRef.current=null;};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return;}}// Mode toggle button click (bottom-right VOL/PAN) const wClipPx=bufDuration/(speed||1.0)*zoom;const cTop=8;const cSize=16;const cHeight=rect.height-16;const modeBtnX=wClipPx-28-4;const modeBtnY=cTop+cHeight-14-2;if(mouseX>=modeBtnX&&mouseX<=modeBtnX+28&&e.clientY-rect.top>=modeBtnY&&e.clientY-rect.top<=modeBtnY+14){if(onModeToggle)onModeToggle();return;}// Fade endpoint handle drag (click on FI/FO handle circles) const HANDLE_R=5;const fiEndPx=fadeInLen*zoom;const foStartPx=wClipPx-fadeOutLen*zoom;const distToFiHandle=Math.abs(mouseX-fiEndPx)+Math.abs(e.clientY-rect.top-cTop);const distToFoHandle=Math.abs(mouseX-foStartPx)+Math.abs(e.clientY-rect.top-cTop);if(distToFiHandle<=HANDLE_R+6){const handleMouseMove=moveEvent=>{const x=moveEvent.clientX-rect.left+scrollLeft;const t=Math.max(0,Math.min(wallDuration,x/zoom));if(onUpdateFade)onUpdateFade({fadeInLen:t});};const handleMouseUp=()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return;}if(distToFoHandle<=HANDLE_R+6){const handleMouseMove=moveEvent=>{const x=moveEvent.clientX-rect.left+scrollLeft;const t=Math.max(0,Math.min(wallDuration,(wClipPx-x)/zoom));if(onUpdateFade)onUpdateFade({fadeOutLen:t});};const handleMouseUp=()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return;}// Tool-specific behavior if(activeTool==='grab'){setSelectedNodeTime(null);onPlayheadSet(startTime);const handleMouseMove=moveEvent=>{const currentX=moveEvent.clientX-rect.left+scrollLeft;const ct=Math.max(0,Math.min(wallDuration,currentX/zoom));onPlayheadSet(ct);};const handleMouseUp=()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return;}if(activeTool==='razor'){setSelectedNodeTime(null);onPlayheadSet(startTime);showToast(`Cut point at ${formatTime(startTime)}`,'info');return;}if(activeTool==='pen'){// Deduplicate by time: keep last occurrence per time key @@ -377,7 +393,7 @@ const specMods=(spectrumModules?spectrumModules():null)||(getModule?[getModule() const applyAll=applyTo||(fn=>{if(typeof window!=='undefined'&&window.__getTrackFxModule){const a=window.__getTrackFxModule(track.id,'eqpro');if(a)fn(a);}if(typeof window!=='undefined'&&window.__getTrackSfFxModule){const b=window.__getTrackSfFxModule(track.id,'eqpro');if(b)fn(b);}});const onDown=e=>{const cv=canvasRef.current,w=cv.clientWidth,h=cv.clientHeight;const{x,y}=toLocal(e);const s=st.current;let hit=false;for(let i=0;it+1);};const onMove=e=>{const s=st.current;if(s.dragId===null)return;const cv=canvasRef.current,w=cv.clientWidth,h=cv.clientHeight;const{x,y}=toLocal(e);const mx=Math.max(0,Math.min(w,x)),my=Math.max(0,Math.min(h,y));const b=s.bands[s.dragId];if(s.mode==='center'){const f=eqproClamp(parseFloat(eqproXToFreq(mx,w).toFixed(1)),EQPRO_F_MIN,EQPRO_F_MAX);// Filters without a Gain control (highpass/lowpass/notch/bandpass) stay on // the 0 dB axis — only frequency is draggable for them. const g=eqproBandHasGain(b.type)?eqproClamp(parseFloat(eqproYToGain(my,h).toFixed(1)),-EQPRO_MAX_DB,EQPRO_MAX_DB):0;b.freq=f;b.gain=g;applyAll(mm=>mm.setBand(s.dragId,{freq:f,gain:g}));}else if(s.mode==='wing'){const q=eqproWingToQ(Math.abs(mx-eqproFreqToX(b.freq,w)));b.q=q;applyAll(mm=>mm.setBand(s.dragId,{q}));}setTick(t=>t+1);};const onUp=e=>{const s=st.current;if(s.dragId!==null)commit();s.dragId=null;s.mode=null;try{canvasRef.current.releasePointerCapture(e.pointerId);}catch(err){}};const onWheel=e=>{e.preventDefault();const s=st.current;if(s.selected===null)return;const b=s.bands[s.selected];b.q=eqproClamp(parseFloat((b.q+(e.deltaY<0?0.2:-0.2)).toFixed(1)),0.1,18);applyAll(mm=>mm.setBand(s.selected,{q:b.q}));setTick(t=>t+1);};const onDblClick=e=>{const cv=canvasRef.current,w=cv.clientWidth,h=cv.clientHeight;const{x,y}=toLocal(e);const s=st.current;const hitIdx=s.bands.findIndex(b=>Math.hypot(x-eqproFreqToX(b.freq,w),y-eqproGainToY(b.gain,h))<=10);if(hitIdx!==-1){s.bands.splice(hitIdx,1);if(s.selected===hitIdx)s.selected=null;else if(s.selected!==null&&s.selected>hitIdx)s.selected--;}else{if(s.bands.length>=EQPRO_MAX_BANDS)return;s.bands.push({type:'peaking',freq:eqproClamp(parseFloat(eqproXToFreq(x,w).toFixed(1)),EQPRO_F_MIN,EQPRO_F_MAX),gain:eqproClamp(parseFloat(eqproYToGain(y,h).toFixed(1)),-EQPRO_MAX_DB,EQPRO_MAX_DB),q:1.2,active:true});s.selected=s.bands.length-1;}applyAll(mm=>mm.syncBands(s.bands));commit();setTick(t=>t+1);};const sel=st.current.selected!==null?st.current.bands[st.current.selected]:null;const selIdx=st.current.selected;const cvW=canvasRef.current?canvasRef.current.clientWidth:460;const cvH=240;const hudColor=selIdx!==null?EQPRO_BAND_COLORS[selIdx%EQPRO_BAND_COLORS.length]:EQPRO_BAND_COLORS[0];const hudXY=(()=>{if(st.current.hudPos){// Clamp so the HUD always stays inside the canvas area (buttons clickable). -return{hx:Math.max(0,Math.min((canvasRef.current?canvasRef.current.clientWidth:460)-268,st.current.hudPos.hx)),hy:Math.max(0,Math.min((canvasRef.current?canvasRef.current.clientHeight:240)-225,st.current.hudPos.hy))};}if(!sel)return null;const nx=eqproFreqToX(sel.freq,cvW),ny=eqproGainToY(sel.gain,cvH);let hx=nx-130,hy=ny-195;if(hx<8)hx=8;if(hx>cvW-268)hx=cvW-268;if(hy<8)hy=ny+24;return{hx,hy};})();return/*#__PURE__*/React.createElement("div",{className:"space-y-2"},/*#__PURE__*/React.createElement("div",{className:"flex items-center justify-between text-[11px] font-mono"},/*#__PURE__*/React.createElement("div",{className:"flex items-center gap-3"},/*#__PURE__*/React.createElement("span",{className:"text-slate-400"},"Bands: ",/*#__PURE__*/React.createElement("span",{className:"text-teal-300 font-bold"},st.current.bands.length),"/8"),/*#__PURE__*/React.createElement("label",{className:"flex items-center gap-1.5"},/*#__PURE__*/React.createElement("span",{className:"text-slate-400"},"Amount:"),/*#__PURE__*/React.createElement("input",{type:"range",min:0,max:200,value:st.current.amount,onChange:e=>{st.current.amount=parseInt(e.target.value);applyAll(mm=>mm.setAmount(st.current.amount));commit();setTick(t=>t+1);},className:"w-20 h-1 cursor-pointer",style:{accentColor:'#2dd4bf'}}),/*#__PURE__*/React.createElement("span",{className:"text-teal-300 font-bold w-10"},st.current.amount,"%"))),/*#__PURE__*/React.createElement("div",{className:"flex items-center gap-1"},/*#__PURE__*/React.createElement("button",{onClick:()=>{const s=st.current;s.bands=JSON.parse(JSON.stringify(EQPRO_DEFAULT_BANDS));s.selected=null;applyAll(mm=>mm.syncBands(s.bands));commit();setTick(t=>t+1);},className:"px-2 py-1 bg-slate-800 hover:bg-red-900/60 text-slate-300 border border-slate-700 rounded text-[10px]"},"Reset"),/*#__PURE__*/React.createElement("button",{onClick:()=>{const s=st.current;if(s.bands.length>=EQPRO_MAX_BANDS)return;s.bands.push({type:'peaking',freq:1000,gain:0,q:1.0,active:true});s.selected=s.bands.length-1;applyAll(mm=>mm.syncBands(s.bands));commit();setTick(t=>t+1);},className:"px-2 py-1 bg-teal-900/50 hover:bg-teal-800 text-teal-300 border border-teal-700 rounded text-[10px]"},"+ Band"))),/*#__PURE__*/React.createElement("div",{className:"relative"},/*#__PURE__*/React.createElement("canvas",{ref:canvasRef,className:"w-full h-60 block cursor-crosshair rounded-lg border border-slate-800 bg-slate-950",onPointerDown:onDown,onPointerMove:onMove,onPointerUp:onUp,onWheel:onWheel,onDoubleClick:onDblClick}),sel&&hudXY&&/*#__PURE__*/React.createElement("div",{className:"absolute z-10 w-64 rounded-xl p-3 text-[11px] font-mono space-y-2 pointer-events-auto cursor-move",style:{left:hudXY.hx,top:hudXY.hy,background:'rgba(15,23,42,0.94)',border:'1px solid rgba(45,212,191,0.3)',boxShadow:'0 10px 30px rgba(0,0,0,0.8)',backdropFilter:'blur(12px)'},onPointerDown:e=>{const s=st.current;s.dragHud=true;const r=e.currentTarget.getBoundingClientRect();s.hudOffsetX=e.clientX-r.left;s.hudOffsetY=e.clientY-r.top;e.currentTarget.setPointerCapture(e.pointerId);},onPointerMove:e=>{const s=st.current;if(!s.dragHud)return;const cv=canvasRef.current;const w=cv?cv.clientWidth:460;s.hudPos={hx:Math.max(0,Math.min(w-268,e.clientX-s.hudOffsetX-(cv?cv.getBoundingClientRect().left:0))),hy:Math.max(0,e.clientY-s.hudOffsetY-(cv?cv.getBoundingClientRect().top:0))};setTick(t=>t+1);},onPointerUp:e=>{st.current.dragHud=false;try{e.currentTarget.releasePointerCapture(e.pointerId);}catch(err){}}},/*#__PURE__*/React.createElement("div",{className:"flex items-center justify-between border-b border-slate-700/80 pb-1.5"},/*#__PURE__*/React.createElement("div",{className:"flex items-center gap-2"},/*#__PURE__*/React.createElement("span",{className:"w-4 h-4 rounded-full text-slate-950 font-bold flex items-center justify-center text-[10px]",style:{background:hudColor.badge}},selIdx+1),/*#__PURE__*/React.createElement("span",{className:"font-bold text-white uppercase tracking-wider"},"Band ",selIdx+1)),/*#__PURE__*/React.createElement("div",{className:"flex items-center gap-1"},/*#__PURE__*/React.createElement("button",{title:"Bypass band",onClick:()=>{const s=st.current;s.bands[s.selected].active=!s.bands[s.selected].active;applyAll(mm=>mm.setBand(s.selected,{active:s.bands[s.selected].active}));commit();setTick(t=>t+1);},className:`w-5 h-5 rounded flex items-center justify-center text-[10px] ${sel.active?'bg-slate-800 text-slate-400':'bg-amber-600 text-white'}`},/*#__PURE__*/React.createElement("i",{className:"fa-solid fa-power-off"})),/*#__PURE__*/React.createElement("button",{title:"Delete band",onClick:()=>{const s=st.current;s.bands.splice(s.selected,1);s.selected=null;applyAll(mm=>mm.syncBands(s.bands));commit();setTick(t=>t+1);},className:"w-5 h-5 rounded bg-slate-800 hover:bg-red-600 text-slate-400 hover:text-white flex items-center justify-center text-[10px]"},/*#__PURE__*/React.createElement("i",{className:"fa-solid fa-xmark"})))),/*#__PURE__*/React.createElement("div",null,/*#__PURE__*/React.createElement("label",{className:"block text-[9px] text-slate-400 uppercase tracking-widest mb-1"},"Filter Shape"),/*#__PURE__*/React.createElement("select",{value:sel.type,onChange:ev=>{const s=st.current;s.bands[s.selected].type=ev.target.value;applyAll(mm=>mm.setBand(s.selected,{type:ev.target.value}));commit();setTick(t=>t+1);},className:"w-full bg-slate-950 border border-slate-700 text-teal-300 rounded px-2 py-1 text-[11px] outline-none"},['peaking','highpass','lowpass','lowshelf','highshelf','notch','bandpass'].map(t=>/*#__PURE__*/React.createElement("option",{key:t,value:t},t==='peaking'?'Bell / Peaking':t==='highpass'?'Low Cut / High Pass':t==='lowpass'?'High Cut / Low Pass':t==='lowshelf'?'Low Shelf':t==='highshelf'?'High Shelf':t==='notch'?'Notch / Band Stop':'Band Pass')))),/*#__PURE__*/React.createElement("div",{className:"grid grid-cols-3 gap-2 text-center bg-slate-950/80 p-2 rounded-lg border border-slate-800"},/*#__PURE__*/React.createElement("div",null,/*#__PURE__*/React.createElement("div",{className:"text-[9px] text-slate-500"},"FREQ"),/*#__PURE__*/React.createElement("div",{className:"text-teal-300 font-bold text-[11px]"},sel.freq>=1000?(sel.freq/1000).toFixed(2)+' kHz':Math.round(sel.freq)+' Hz')),/*#__PURE__*/React.createElement("div",null,/*#__PURE__*/React.createElement("div",{className:"text-[9px] text-slate-500"},"GAIN"),/*#__PURE__*/React.createElement("div",{className:"text-amber-400 font-bold text-[11px]"},eqproBandHasGain(sel.type)?(sel.gain>0?'+':'')+sel.gain.toFixed(1)+' dB':'0.0 dB')),/*#__PURE__*/React.createElement("div",null,/*#__PURE__*/React.createElement("div",{className:"text-[9px] text-slate-500"},"Q"),/*#__PURE__*/React.createElement("div",{className:"text-purple-400 font-bold text-[11px]"},sel.q.toFixed(1)))),/*#__PURE__*/React.createElement("div",{className:"text-[9px] text-slate-500 text-center"},"Drag center: Freq & Gain · Wings/Wheel: Q · Dbl-click: add/delete"))));};const FXRackModal=({track,onUpdateTrack,onClose})=>{const[activeType,setActiveType]=React.useState('eq');const[addModuleOpen,setAddModuleOpen]=React.useState(false);const dragChainIndexRef=React.useRef(null);// Wave Observer scope state (unified_fx_rack_panel_update.md §III.3) +return{hx:Math.max(0,Math.min((canvasRef.current?canvasRef.current.clientWidth:460)-268,st.current.hudPos.hx)),hy:Math.max(0,Math.min((canvasRef.current?canvasRef.current.clientHeight:240)-225,st.current.hudPos.hy))};}if(!sel)return null;const nx=eqproFreqToX(sel.freq,cvW),ny=eqproGainToY(sel.gain,cvH);let hx=nx-130,hy=ny-195;if(hx<8)hx=8;if(hx>cvW-268)hx=cvW-268;if(hy<8)hy=ny+24;return{hx,hy};})();return/*#__PURE__*/React.createElement("div",{className:"space-y-2"},/*#__PURE__*/React.createElement("div",{className:"flex items-center justify-between text-[11px] font-mono"},/*#__PURE__*/React.createElement("div",{className:"flex items-center gap-3"},/*#__PURE__*/React.createElement("span",{className:"text-slate-400"},"Bands: ",/*#__PURE__*/React.createElement("span",{className:"text-teal-300 font-bold"},st.current.bands.length),"/8"),/*#__PURE__*/React.createElement("label",{className:"flex items-center gap-1.5"},/*#__PURE__*/React.createElement("span",{className:"text-slate-400"},"Amount:"),/*#__PURE__*/React.createElement("input",{type:"range",min:0,max:200,value:st.current.amount,onChange:e=>{st.current.amount=parseInt(e.target.value);applyAll(mm=>mm.setAmount(st.current.amount));commit();setTick(t=>t+1);},className:"w-20 h-1 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hover:bg-slate-800 border border-slate-800 rounded-xl text-left space-y-1 transition-colors"},/*#__PURE__*/React.createElement("div",{className:"font-bold flex items-center gap-1.5",style:{color:meta.color}},/*#__PURE__*/React.createElement("i",{"data-lucide":meta.icon,className:"w-3.5 h-3.5"})," ",meta.name),/*#__PURE__*/React.createElement("div",{className:"text-[10px] text-slate-400"},meta.sub));})))));};// ────────────────────────────────────────────── // MASTERING MODAL COMPONENT (from md/45_MASTERING_MODULE.md) // ────────────────────────────────────────────── const MasteringModal=({isOpen,onClose,masteringSettings,setMasteringSettings})=>{const ozState=masteringSettings;const setOzState=setMasteringSettings;const[isPlaying,setIsPlaying]=React.useState(false);const masterConnected=ozState.masterConnected;const setMasterConnected=val=>{setOzState(prev=>({...prev,masterConnected:typeof val==='function'?val(prev.masterConnected):val}));};const audioRef=React.useRef({source:null});const eqCanvasRef=React.useRef(null);const imagerCanvasRef=React.useRef(null);const inMeterCanvasRef=React.useRef(null);const outMeterCanvasRef=React.useRef(null);const animFrameRef=React.useRef(null);const lufsAccRef=React.useRef([]);const knobsInitializedRef=React.useRef(false);// Wave Observer Refs & States @@ -429,7 +445,7 @@ const dragChainIndexRef=React.useRef(null);const[addModuleOpen,setAddModuleOpen] const MODULE_META={eq:{name:'Dynamic EQ',sub:'4-Band Peak',icon:'activity',color:'#22d3ee'},eqpro:{name:'Parametric / Graphic EQ PRO',sub:'Pro-Q style · 8 bands · interactive',icon:'chart-area',color:'#2dd4bf'},imager:{name:'Imager',sub:'4-Band Width',icon:'radio',color:'#a855f7'},maximizer:{name:'Maximizer',sub:'IRC IV True Peak',icon:'gauge',color:'#34d399'},compressor:{name:'Bus Compressor',sub:'Glue & Punch',icon:'compress',color:'#fbbf24'},limiter:{name:'Brickwall Limiter',sub:'True-Peak 20:1',icon:'shield-half',color:'#f43f5e'},exciter:{name:'Harmonic Exciter',sub:'Saturation & Air',icon:'wand-2',color:'#c084fc'},rebalance:{name:'Master Rebalance',sub:'M/S Balance',icon:'sliders-horizontal',color:'#38bdf8'}};const chainFlag=type=>type==='eq'?'eqActive':type==='eqpro'?'eqproActive':type==='imager'?'imagerActive':type==='maximizer'?'maximizerActive':type==='compressor'?'compActive':type==='limiter'?'limActive':type==='exciter'?'excActive':'rebalActive';const chainActive=type=>!!ozState[chainFlag(type)];const toggleChainModule=modId=>{setOzState(prev=>{const chain=prev.chain.map(m=>{if(m.id!==modId)return m;const next=!m.active;return{...m,active:next};});const flags={};chain.forEach(m=>{flags[chainFlag(m.type)]=!!m.active;});return{...prev,chain,...flags};});};const removeChainModule=modId=>{setOzState(prev=>{let chain=prev.chain.filter(m=>m.id!==modId);if(chain.length===0)chain=DEFAULT_MASTER_CHAIN.map(m=>({...m}));// keep ≥1 const flags={};chain.forEach(m=>{flags[chainFlag(m.type)]=!!m.active;});const activeModule=prev.activeModule;return{...prev,chain,...flags,activeModule:chain.some(m=>m.type===activeModule)?activeModule:chain[chain.length-1].type};});};const reorderChain=(fromIdx,toIdx)=>{if(fromIdx===toIdx)return;setOzState(prev=>{const chain=[...prev.chain];const moved=chain.splice(fromIdx,1)[0];chain.splice(toIdx,0,moved);return{...prev,chain};});};const addModuleToChain=type=>{const meta=MODULE_META[type];const id='mod_'+type+'_'+Date.now();const entry={id,type,name:meta.name,active:true};if(type==='eqpro')entry.params={amount:100,bands:JSON.parse(JSON.stringify(EQPRO_DEFAULT_BANDS))};setOzState(prev=>({...prev,chain:[...(prev.chain||[]),entry],[chainFlag(type)]:true,activeModule:type}));setAddModuleOpen(false);};const updateChainEntryParams=(modId,patch)=>{setOzState(prev=>({...prev,chain:(prev.chain||[]).map(m=>m.id===modId?{...m,params:{...(m.params||{}),...patch}}:m)}));};// ── EQ Preset Library (mastering_expand.md §II.1) ── const EQ_PRESET_LIBRARY={flat:{name:'Flat / Reset',bands:[{id:1,type:'lowshelf',freq:100,gain:0.0,q:0.7},{id:2,type:'peaking',freq:800,gain:0.0,q:0.7},{id:3,type:'peaking',freq:3200,gain:0.0,q:1.2},{id:4,type:'highshelf',freq:10000,gain:0.0,q:0.7}]},vocal_clarity:{name:'Vocal Unmask & Clarity',bands:[{id:1,type:'lowshelf',freq:90,gain:-2.5,q:0.7},{id:2,type:'peaking',freq:500,gain:-1.8,q:1.0},{id:3,type:'peaking',freq:2800,gain:3.2,q:1.2},{id:4,type:'highshelf',freq:12000,gain:2.0,q:0.7}]},bass_punch:{name:'EDM Low-End Punch',bands:[{id:1,type:'lowshelf',freq:80,gain:4.0,q:0.8},{id:2,type:'peaking',freq:300,gain:-3.0,q:1.4},{id:3,type:'peaking',freq:4000,gain:1.5,q:1.0},{id:4,type:'highshelf',freq:10000,gain:1.0,q:0.7}]},warm_tape:{name:'Warm Vintage Analog',bands:[{id:1,type:'lowshelf',freq:120,gain:2.0,q:0.6},{id:2,type:'peaking',freq:1500,gain:1.0,q:0.5},{id:3,type:'peaking',freq:5000,gain:-2.0,q:1.0},{id:4,type:'highshelf',freq:8000,gain:-3.0,q:0.7}]}};const applyEQPreset=presetKey=>{const preset=EQ_PRESET_LIBRARY[presetKey];if(!preset)return;const bus=masterBus;if(bus&&bus.eqLowFilter){const now=audioCtx?audioCtx.currentTime:0;const filters=[bus.eqLowFilter,bus.eqMid1Filter,bus.eqMid2Filter,bus.eqHighFilter];preset.bands.forEach((bd,i)=>{const f=filters[i];if(!f)return;try{f.frequency.setTargetAtTime(bd.freq,now,0.02);f.gain.setTargetAtTime(bd.gain,now,0.02);f.Q.setTargetAtTime(bd.q,now,0.02);}catch(e){}});}// Sync UI knobs + canvas: [eqLowGain, eqMid1Gain, eqMid2Gain, eqHighGain] 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cursor-pointer",onMouseDown:handleCanvasMouseDown,onMouseMove:handleCanvasMouseMove,onMouseUp:handleCanvasMouseUp,onContextMenu:handleCanvasContextMenu}),/*#__PURE__*/React.createElement("div",{className:"absolute top-1.5 right-1.5 flex gap-1 z-10"},/*#__PURE__*/React.createElement("button",{className:"w-5 h-5 bg-[#2a2a2a] hover:bg-slate-700 border border-[#444] rounded flex items-center justify-center text-white text-xs font-bold select-none cursor-pointer",title:"Zoom In",onClick:()=>setZoom(prev=>Math.min(10.0,prev*1.25))},"+"),/*#__PURE__*/React.createElement("button",{className:"w-5 h-5 bg-[#2a2a2a] hover:bg-slate-700 border border-[#444] rounded flex items-center justify-center text-white text-xs font-bold select-none cursor-pointer",title:"Zoom Out",onClick:()=>setZoom(prev=>Math.max(0.2,prev/1.25))},"-"),/*#__PURE__*/React.createElement("button",{className:"w-5 h-5 bg-[#2a2a2a] hover:bg-slate-700 border border-[#444] rounded flex items-center justify-center text-white text-[9px] select-none cursor-pointer",title:"Reset Zoom",onClick:()=>setZoom(1.0)},"1x")),previewCtxMenu&&/*#__PURE__*/React.createElement("div",{className:"fixed bg-[#1e1e24] border border-[#3e3e4a] rounded shadow-md z-[9999] py-1 font-sans text-xs text-slate-300 w-32 cursor-pointer select-none",style:{top:previewCtxMenu.y,left:previewCtxMenu.x},onClick:e=>e.stopPropagation()},/*#__PURE__*/React.createElement("div",{className:"px-3 py-1.5 hover:bg-slate-700 hover:text-white flex items-center gap-2",onClick:()=>{handleCopySelection();setPreviewCtxMenu(null);}},/*#__PURE__*/React.createElement("i",{className:"fa-solid fa-copy"})," Copy"),/*#__PURE__*/React.createElement("div",{className:"px-3 py-1.5 hover:bg-slate-700 hover:text-white border-t border-[#3e3e4a] flex items-center gap-2",onClick:()=>setPreviewCtxMenu(null)},/*#__PURE__*/React.createElement("i",{className:"fa-solid fa-xmark"})," Cancel"))),/*#__PURE__*/React.createElement("div",{className:"w-48 bg-[#181818] border border-[#3a3a3a] p-1.5 font-mono text-[10px] text-slate-300 leading-tight overflow-y-auto shrink-0"},selected?selIsMidi&&!selected.path?/*#__PURE__*/React.createElement(React.Fragment,null,/*#__PURE__*/React.createElement("div",null,selected.events," MIDI events"),/*#__PURE__*/React.createElement("div",null,"Length: ",selected.lengthQn," quarter notes"),/*#__PURE__*/React.createElement("div",null,"Length: ",selected.time," (est)"),/*#__PURE__*/React.createElement("div",null,"Ticks per quarter note: ",selected.tpqn)):/*#__PURE__*/React.createElement(React.Fragment,null,/*#__PURE__*/React.createElement("div",null,"Size: ",selected.size_mb!=null?selected.size_mb.toFixed(2)+' MB':'-'),selIsMidi?/*#__PURE__*/React.createElement(React.Fragment,null,/*#__PURE__*/React.createElement("div",null,"Bars: ",midiBars||1),/*#__PURE__*/React.createElement("div",null,"Beats: ",Math.round(midiTotalBeats||16)),/*#__PURE__*/React.createElement("div",null,"BPM: ",midiFileBpm||120),/*#__PURE__*/React.createElement("div",null,"Duration: ",selDur.toFixed(2),"s")):/*#__PURE__*/React.createElement(React.Fragment,null,/*#__PURE__*/React.createElement("div",null,"Duration: ",selDur.toFixed(2),"s"),/*#__PURE__*/React.createElement("div",null,"Sample Rate: 44100 Hz"),/*#__PURE__*/React.createElement("div",null,"Type: ",selected.path?selected.kind==='other'?'Local File':'Local Audio':selected.type||'Audio'))):/*#__PURE__*/React.createElement("div",null,"No file selected"))),/*#__PURE__*/React.createElement("div",{className:"h-5 bg-[#c0c0c0] border-t border-white flex items-center justify-between text-[11px] font-mono px-1 shrink-0"},/*#__PURE__*/React.createElement("div",{className:"flex items-center gap-3"},selIsMidi&&midiNotes&&midiNotes.length?/*#__PURE__*/React.createElement("div",{className:"bg-white border border-[#808080] px-1.5 text-slate-900 font-bold"},"Bar ",Math.max(1,Math.floor(currentTime/(4*60/(tempo||120)))+1)," / ",midiBars||1,/*#__PURE__*/React.createElement("span",{className:"text-slate-500 ml-1"},"| ",formatTime(currentTime)," / ",formatTime(selDur))):/*#__PURE__*/React.createElement("div",{className:"bg-white border border-[#808080] px-1.5 text-slate-900 font-bold"},formatTime(currentTime)," / ",formatTime(selDur))),/*#__PURE__*/React.createElement("div",{className:"text-slate-800 font-bold truncate max-w-[40%]"},selected?selected.name||selected.original_name:'No file selected'),/*#__PURE__*/React.createElement("div",{className:"text-slate-700"},selBpm," bpm x",rate.toFixed(2)))));};const App=()=>{// ── State Definitions ── const[tracks,setTracks]=useState([{id:'1',name:'Track 01',buffer:null,startTime:0,volumeDb:0,pan:0,muted:false,solo:false,color:'#0f766e',markers:[],serverFileId:null,clips:[],sections:[],midiItems:[],isArmed:false,monitoringEnabled:true,inputSource:{deviceType:'NONE',deviceId:''}},{id:'2',name:'Track 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 @@ -510,7 +526,8 @@ const[snapValue,onSnapChangeue]=useState('1');// 'free', '1', '1/2', '1/4', '1/8 const snapTime=(time,snapValue,bpmVal)=>{if(snapValue==='free')return time;const beatDuration=60/parseFloat(bpmVal||120);let divisor=1;if(snapValue==='4')divisor=4;else if(snapValue==='1')divisor=1;else if(snapValue==='1/2')divisor=0.5;else if(snapValue==='1/4')divisor=0.25;else if(snapValue==='1/8')divisor=0.125;else if(snapValue==='1/16')divisor=0.0625;else if(snapValue==='1/32')divisor=0.03125;const gridSpacing=beatDuration*divisor;return Math.round(time/gridSpacing)*gridSpacing;};const snapValueRef=useRef(snapValue);snapValueRef.current=snapValue;const bpmRef=useRef(bpm);bpmRef.current=bpm;// BMP for Tempo Track - LOOP_EDITOR_2.md §6 const[selectedTrackId,setSelectedTrackId]=useState('1');const[selectedItemIds,setSelectedItemIds]=useState(new Set());const selectedItemIdsRef=useRef(new Set());selectedItemIdsRef.current=selectedItemIds;const[currentTime,setCurrentTime]=useState(0);const[isPlaying,setIsPlaying]=useState(false);const[selectionStart,setSelectionStart]=useState(null);const[selectionEnd,setSelectionEnd]=useState(null);const[selectionFollowsTempo,setSelectionFollowsTempo]=useState(true);const selectionRef=useRef({start:null,end:null});selectionRef.current={start:selectionStart,end:selectionEnd};const[selectionMode,setSelectionMode]=useState(null);// 'global' (from ruler) | 'local' (from track) const[sweepSelect,setSweepSelect]=useState(null);const isSweepingRef=useRef(false);const sweepStartRef=useRef(0);const sweepTrackIdRef=useRef(null);const sweepStartYRef=useRef(0);const sweepEndYRef=useRef(0);const sweepSelectRef=useRef(null);const pendingDragRef=useRef(null);// { trackId, itemType, itemId, clickOffset, startX, startY } -const handleSectionItemDragStartRef=useRef(null);const[localSelectionTrackId,setLocalSelectionTrackId]=useState(null);const[localSelectionStart,setLocalSelectionStart]=useState(null);const[localSelectionEnd,setLocalSelectionEnd]=useState(null);const[zoom,setZoom]=useState(100);const[isLoopingSelection,setIsLoopingSelection]=useState(false);const[beginBar,setBeginBar]=useState(0);const[endBar,setEndBar]=useState(0);const[numberBar,setNumberBar]=useState(1);const[subTabHeight,setSubTabHeight]=useState(96);const[isExporting,setIsExporting]=useState(false);const[projectName,setProjectName]=useState(()=>localStorage.getItem('sonic_project_name')||'');const[currentProjectId,setCurrentProjectId]=useState(()=>localStorage.getItem('sonic_project_id')||null);const[saveProjectModalOpen,setSaveProjectModalOpen]=useState(false);const[saveAsModalOpen,setSaveAsModalOpen]=useState(false);const[openProjectModalOpen,setOpenProjectModalOpen]=useState(false);const hasAnySolo=tracks.some(t=>t.solo);const[toastMessage,setToastMessage]=useState(null);const[audioDevices,setAudioDevices]=useState([]);const[midiDevices,setMidiDevices]=useState([]);const[selectedMidiInputId,setSelectedMidiInputId]=useState('');const selectedMidiInputIdRef=useRef('');const handleMidiInputSelect=id=>{setSelectedMidiInputId(id);selectedMidiInputIdRef.current=id;if(window.SonicRecorderManager){window.SonicRecorderManager.setSelectedMidiInputId(id);}};useEffect(()=>{if(navigator.mediaDevices&&navigator.mediaDevices.enumerateDevices){navigator.mediaDevices.enumerateDevices().then(devices=>{setAudioDevices(devices.filter(d=>d.kind==='audioinput'));}).catch(err=>console.log('Enumerate audio devices error:',err));}if(navigator.requestMIDIAccess){navigator.requestMIDIAccess().then(access=>{const inputs=[];function attachMidiHandler(input){input.onmidimessage=msg=>{// Filter by selected MIDI input device +const handleSectionItemDragStartRef=useRef(null);const[localSelectionTrackId,setLocalSelectionTrackId]=useState(null);const[localSelectionStart,setLocalSelectionStart]=useState(null);const[localSelectionEnd,setLocalSelectionEnd]=useState(null);const[zoom,setZoom]=useState(()=>{// Persist zoom qua reload (user yêu cầu giữ kích thước items sau refresh) +try{const v=parseFloat(localStorage.getItem('sf_zoom'));if(isFinite(v)&&v>0)return v;}catch(e){}return 100;});React.useEffect(()=>{try{localStorage.setItem('sf_zoom',String(zoom));}catch(e){}},[zoom]);const[isLoopingSelection,setIsLoopingSelection]=useState(false);const[beginBar,setBeginBar]=useState(0);const[endBar,setEndBar]=useState(0);const[numberBar,setNumberBar]=useState(1);const[subTabHeight,setSubTabHeight]=useState(96);const[isExporting,setIsExporting]=useState(false);const[projectName,setProjectName]=useState(()=>localStorage.getItem('sonic_project_name')||'');const[currentProjectId,setCurrentProjectId]=useState(()=>localStorage.getItem('sonic_project_id')||null);const[saveProjectModalOpen,setSaveProjectModalOpen]=useState(false);const[saveAsModalOpen,setSaveAsModalOpen]=useState(false);const[openProjectModalOpen,setOpenProjectModalOpen]=useState(false);const hasAnySolo=tracks.some(t=>t.solo);const[toastMessage,setToastMessage]=useState(null);const[audioDevices,setAudioDevices]=useState([]);const[midiDevices,setMidiDevices]=useState([]);const[selectedMidiInputId,setSelectedMidiInputId]=useState('');const selectedMidiInputIdRef=useRef('');const handleMidiInputSelect=id=>{setSelectedMidiInputId(id);selectedMidiInputIdRef.current=id;if(window.SonicRecorderManager){window.SonicRecorderManager.setSelectedMidiInputId(id);}};useEffect(()=>{if(navigator.mediaDevices&&navigator.mediaDevices.enumerateDevices){navigator.mediaDevices.enumerateDevices().then(devices=>{setAudioDevices(devices.filter(d=>d.kind==='audioinput'));}).catch(err=>console.log('Enumerate audio devices error:',err));}if(navigator.requestMIDIAccess){navigator.requestMIDIAccess().then(access=>{const inputs=[];function attachMidiHandler(input){input.onmidimessage=msg=>{// Filter by selected MIDI input device const selId=selectedMidiInputIdRef.current;if(selId&&selId!=='ALL'&&input.id!==selId)return;console.log(`[DevLog] [Raw MIDI] Received from "${input.name}" (ID: ${input.id}) - Data:`,Array.from(msg.data));if(msg.data.length<3)return;const cmd=msg.data[0]>>4;const pitch=msg.data[1];const rawVel=msg.data[2];// Scale low MIDI velocity naturally (min 1, max 127) const scaledVel=Math.min(127,Math.max(1,Math.round(rawVel)));if(cmd===0x9&&rawVel>0){lastMidiNoteRef.current={pitch,velocity:scaledVel,startTime:performance.now(),length:0};setLastMidiNote({pitch,velocity:scaledVel,length:0,time:Date.now()});activeMidiPitchesRef.current.add(pitch);setActiveMidiPitches(new Set(activeMidiPitchesRef.current));// Route MIDI input to ALL armed tracks on their dedicated channels // Do NOT use raw MIDI hardware channel (msg.data[0] & 0x0F) @@ -650,7 +667,15 @@ const ctx=getAudioContext();const clipBuffer=ctx.createBuffer(1,len,sr);clipBuff const newLen=data.length-len;const newBuffer=ctx.createBuffer(1,newLen,sr);const newData=newBuffer.getChannelData(0);let idx=0;for(let i=0;ip.map(tr=>tr.id===selectedTrackId?{...tr,buffer:newBuffer}:tr));const afterSnap=captureTrackSnapshot(selectedTrackId);pushAction('CUT',selectedTrackId,beforeSnap,afterSnap);showToast('Cut selection to clipboard.','info');return;}}// No selection: cut entire track (copy + delete) handleCopyTrack();handleDeleteTrack();};const handleDeleteTrack=()=>{const tid=selectedTrackId;const sessionTab=sessionTabs.find(s=>s.id===activeTab);if(sessionTab){const trackData=activeTracks.find(t=>t.id===tid);if(trackData)deleteTrackWithUndo(tid,JSON.parse(JSON.stringify(trackData)));updateActiveTracks(prev=>prev.filter(t=>t.id!==tid));setSelectedTrackId(activeTracks.filter(t=>t.id!==tid)[0]?.id||'1');}else{const curTracks=tracks;const track=curTracks.find(t=>t.id===tid);if(track&&track.sections&&track.sections.length>0){showToast('Không thể xoá track chứa Section item.','warning');return;}if(track)deleteTrackWithUndo(tid,JSON.parse(JSON.stringify(track)));setTracks(p=>p.filter(t=>t.id!==tid));setSelectedTrackId(curTracks.filter(t=>t.id!==tid)[0]?.id||'1');}showToast('Deleted track.','info');};handleDeleteTrackRef.current=handleDeleteTrack;// ── Server Health Check ── const[viewportWidth,setViewportWidth]=useState(1200);useEffect(()=>{if(!timelineWrapperNode)return;const observer=new ResizeObserver(entries=>{for(let entry of entries){setViewportWidth(entry.contentRect.width);}});observer.observe(timelineWrapperNode);return()=>observer.disconnect();},[timelineWrapperNode]);useEffect(()=>{fetch(API_BASE_URL).then(r=>{if(r.ok)setServerStatus('connected');else setServerStatus('error');}).catch(()=>setServerStatus('offline'));},[]);// ── Computed Values ── -const leadInMargin=0;const leadInMarginRef=useRef(0);leadInMarginRef.current=0;const maxDuration=useMemo(()=>{const secPerBar=60.0/(parseInt(bpm)||120)*4;const cur=activeTracks;let max=10;cur.forEach(t=>{const clips=t.clips&&t.clips.length>0?t.clips:t.buffer?[{id:'default',buffer:t.buffer,startTime:t.startTime||0,name:t.name,speed:t.speed||1.0}]:[];clips.forEach(c=>{if(c.buffer){const cStart=c.startTime||0;const cDur=c.buffer.duration/(c.speed||1.0);max=Math.max(max,cStart+cDur);}});(t.midiItems||[]).forEach(m=>{max=Math.max(max,(m.startTime||0)+(m.duration||4));});(t.sections||[]).forEach(s=>{max=Math.max(max,(s.start||0)+(s.duration||4));});});if(recordingState==='RECORDING'||recordingState==='COUNT_IN'){max=Math.max(max,currentTime+60);}max+=secPerBar*12+scrollBufferExtra;return max;},[activeTracks,recordingState,currentTime,bpm,scrollBufferExtra]);const maxDurationRef=useRef(maxDuration);maxDurationRef.current=maxDuration;const minZoom=useMemo(()=>{return viewportWidth/maxDuration;},[viewportWidth,maxDuration]);const timelineWidth=useMemo(()=>{return Math.max(zoom*(maxDuration+leadInMargin),viewportWidth);},[zoom,maxDuration,viewportWidth,leadInMargin]);useEffect(()=>{if(zoom(currentTime+leadInMargin)*zoom,[currentTime,zoom,leadInMargin]);const selLeft=useMemo(()=>{if(selectionMode==='local'&&localSelectionStart!==null&&localSelectionEnd!==null){return Math.max(0,Math.min(localSelectionStart,localSelectionEnd));}if(selectionStart===null||selectionEnd===null)return null;return Math.max(0,Math.min(selectionStart,selectionEnd));},[selectionStart,selectionEnd,selectionMode,localSelectionStart,localSelectionEnd]);const selRight=useMemo(()=>{if(selectionMode==='local'&&localSelectionStart!==null&&localSelectionEnd!==null){return Math.max(0,Math.max(localSelectionStart,localSelectionEnd));}if(selectionStart===null||selectionEnd===null)return null;return Math.max(0,Math.max(selectionStart,selectionEnd));},[selectionStart,selectionEnd,selectionMode,localSelectionStart,localSelectionEnd]);const dspSelectionStats=useMemo(()=>{const track=tracks.find(t=>t.id===selectedTrackId);if(!track)return null;const numChannels=track.buffer?track.buffer.numberOfChannels||1:0;if(selLeft===null||selRight===null||selRight<=selLeft||!track.buffer){return{trackName:track.name,channels:numChannels,timeRange:'Chưa chọn vùng',peakVolume:'N/A'};}const buffer=track.buffer;const sampleRate=buffer.sampleRate;const startSample=Math.max(0,Math.min(buffer.length-1,Math.floor(selLeft*sampleRate)));const endSample=Math.max(0,Math.min(buffer.length,Math.floor(selRight*sampleRate)));let maxVal=0;for(let c=0;cmaxVal)maxVal=val;}}let peakDb='N/A';if(maxVal>0){const db=20*Math.log10(maxVal);peakDb=db.toFixed(2)+' dB';}else{peakDb='-∞ dB';}return{trackName:track.name,channels:numChannels,timeRange:`${selLeft.toFixed(2)}s - ${selRight.toFixed(2)}s (${(selRight-selLeft).toFixed(2)}s)`,peakVolume:peakDb};},[tracks,selectedTrackId,selLeft,selRight]);// ── Toast helper ── +const leadInMargin=0;const leadInMarginRef=useRef(0);leadInMarginRef.current=0;const maxDuration=useMemo(()=>{const secPerBar=60.0/(parseInt(bpm)||120)*4;// MAIN SESSION: endtime của items trên track MAIN (mặc kệ SECTION-TAB dài bao nhiêu — +// sub-track items bị clamp trong section bounds khi play trong main session). +// SECTION-TAB: endtime của items trên track CỦA TAB (tính theo vị trí section trên main). +let max;if(activeTab==='main'){max=computeMainSessionEndTime(activeTracks);}else{const tab=sessionTabs.find(st=>st.id===activeTab);const tabMax=tab?computeMainSessionEndTime(tab.tracks||[]):0;let secStart=0;const secRef=tab?tab.sectionId:null;if(secRef){activeTracks.forEach(t=>(t.sections||[]).forEach(s=>{if(s.sectionId===secRef||s.id===secRef)secStart=s.start||0;}));}max=secStart+tabMax;}if(recordingState==='RECORDING'||recordingState==='COUNT_IN'){max=Math.max(max,currentTime+60);}max+=secPerBar*12+scrollBufferExtra;return max;},[activeTab,activeTracks,sessionTabs,recordingState,currentTime,bpm,scrollBufferExtra]);const maxDurationRef=useRef(maxDuration);maxDurationRef.current=maxDuration;// ── Project REAL end-time (KHÔNG buffer) ── +// maxDuration ở trên cộng 12 bars + scrollBuffer cho vùng SCROLL/ZOOM; nếu +// dùng nó làm điểm dừng LOOP thì loop kéo dài quá duration thật. projectEnd +// = endtime của session (main: items trên track main; section-tab: secStart + +// items của tab) — dùng cho updatePlayhead dừng/loop lại đúng cuối bài. +const projectEnd=useMemo(()=>{let max;if(activeTab==='main'){max=computeMainSessionEndTime(activeTracks);}else{const tab=sessionTabs.find(st=>st.id===activeTab);const tabMax=tab?computeMainSessionEndTime(tab.tracks||[]):0;let secStart=0;const secRef=tab?tab.sectionId:null;if(secRef){activeTracks.forEach(t=>(t.sections||[]).forEach(s=>{if(s.sectionId===secRef||s.id===secRef)secStart=s.start||0;}));}max=secStart+tabMax;}if(recordingState==='RECORDING'||recordingState==='COUNT_IN'){max=Math.max(max,currentTime+60);}return Math.max(1,max);},[activeTab,activeTracks,sessionTabs,recordingState,currentTime]);const projectEndRef=useRef(projectEnd);projectEndRef.current=projectEnd;const minZoom=useMemo(()=>{return viewportWidth/maxDuration;},[viewportWidth,maxDuration]);const timelineWidth=useMemo(()=>{return Math.max(zoom*(maxDuration+leadInMargin),viewportWidth);},[zoom,maxDuration,viewportWidth,leadInMargin]);useEffect(()=>{if(zoom(currentTime+leadInMargin)*zoom,[currentTime,zoom,leadInMargin]);const selLeft=useMemo(()=>{if(selectionMode==='local'&&localSelectionStart!==null&&localSelectionEnd!==null){return Math.max(0,Math.min(localSelectionStart,localSelectionEnd));}if(selectionStart===null||selectionEnd===null)return null;return Math.max(0,Math.min(selectionStart,selectionEnd));},[selectionStart,selectionEnd,selectionMode,localSelectionStart,localSelectionEnd]);const selRight=useMemo(()=>{if(selectionMode==='local'&&localSelectionStart!==null&&localSelectionEnd!==null){return Math.max(0,Math.max(localSelectionStart,localSelectionEnd));}if(selectionStart===null||selectionEnd===null)return null;return Math.max(0,Math.max(selectionStart,selectionEnd));},[selectionStart,selectionEnd,selectionMode,localSelectionStart,localSelectionEnd]);const dspSelectionStats=useMemo(()=>{const track=tracks.find(t=>t.id===selectedTrackId);if(!track)return null;const numChannels=track.buffer?track.buffer.numberOfChannels||1:0;if(selLeft===null||selRight===null||selRight<=selLeft||!track.buffer){return{trackName:track.name,channels:numChannels,timeRange:'Chưa chọn vùng',peakVolume:'N/A'};}const buffer=track.buffer;const sampleRate=buffer.sampleRate;const startSample=Math.max(0,Math.min(buffer.length-1,Math.floor(selLeft*sampleRate)));const endSample=Math.max(0,Math.min(buffer.length,Math.floor(selRight*sampleRate)));let maxVal=0;for(let c=0;cmaxVal)maxVal=val;}}let peakDb='N/A';if(maxVal>0){const db=20*Math.log10(maxVal);peakDb=db.toFixed(2)+' dB';}else{peakDb='-∞ dB';}return{trackName:track.name,channels:numChannels,timeRange:`${selLeft.toFixed(2)}s - ${selRight.toFixed(2)}s (${(selRight-selLeft).toFixed(2)}s)`,peakVolume:peakDb};},[tracks,selectedTrackId,selLeft,selRight]);// ── Toast helper ── const showToast=(text,type='info',actionText=null,onActionClick=null)=>{if(toastTimeoutRef.current)clearTimeout(toastTimeoutRef.current);setToastMessage({text,type,actionText,onActionClick});toastTimeoutRef.current=setTimeout(()=>setToastMessage(null),actionText?8000:3500);};window.showToast=showToast;// ── Server-side upload ── const uploadToServer=async(file,trackId)=>{const formData=new FormData();formData.append('file',file);try{const resp=await fetch(`${API_AUDIO}/upload`,{method:'POST',body:formData});if(!resp.ok)throw new Error(`Upload failed: ${resp.status}`);const data=await resp.json();serverFileIdMap[trackId]=data.file_id;return data;}catch(err){console.warn('Server upload failed, using client-side only:',err.message);return null;}};// ── Server-side waveform loading ── const loadServerWaveform=async fileId=>{try{const resp=await fetch(`${API_AUDIO}/waveform/${fileId}?num_peaks=800`);if(!resp.ok)return null;return await resp.json();}catch{return null;}};// ── Check Celery task result ── @@ -663,7 +688,27 @@ const volNodes=st.volumeNodes||[];if(volNodes.length>0){volumeGainNode.gain.canc const panNodes=st.panningNodes||[];if(panNodes.length>0){pannerNode.pan.cancelScheduledValues(context.currentTime);panNodes.forEach((n,i)=>{const t=context.currentTime+n.time/speed;const clamped=Math.max(-1,Math.min(1,n.pan));if(i===0)pannerNode.pan.setValueAtTime(clamped,t);else pannerNode.pan.linearRampToValueAtTime(clamped,t);});}// Schedule fade curves const duration=st.buffer.duration;const fIn=st.fadeInLen||0;const fOut=st.fadeOutLen||0;if(fIn>0){fadeGainNode.gain.setValueAtTime(0.0,context.currentTime);fadeGainNode.gain.linearRampToValueAtTime(1.0,context.currentTime+fIn/speed);}if(fOut>0){const fadeOutStart=(duration-fOut)/speed;fadeGainNode.gain.setValueAtTime(1.0,context.currentTime+Math.max(0,fadeOutStart));fadeGainNode.gain.linearRampToValueAtTime(0.0,context.currentTime+duration/speed);}source.connect(volumeGainNode);volumeGainNode.connect(pannerNode);pannerNode.connect(fadeGainNode);// Route through mastering chain unless this track has mastering bypass ON. const route=createMasteringRoute(context,{masteringBypass:!!trackAudioBypassMap[st.trackId]},masterBus);fadeGainNode.connect(route.routeGain);fadeGainNode.connect(route.dryGain);source.start(context.currentTime,offsetBuffer);activeSourcesRef.current=[source];activeTrackNodesRef.current[st.trackId]={gainNode:volumeGainNode,pannerNode,source};// Realtime mute/solo for the newly created playback chain. -if(window.__applyTrackMuteSolo)window.__applyTrackMuteSolo(st.trackId,null);startOffsetTimeRef.current=offsetWallTime;startBufferOffsetRef.current=offsetBuffer;startAudioTimeRef.current=context.currentTime;};const playMetronomeClick=(time,isDownbeat=false)=>{try{const ctx=getAudioContext();const osc=ctx.createOscillator();const gainNode=ctx.createGain();osc.connect(gainNode);gainNode.connect(masterBus?masterBus.input:ctx.destination);osc.frequency.setValueAtTime(isDownbeat?1000:800,time);gainNode.gain.setValueAtTime(0.08,time);gainNode.gain.exponentialRampToValueAtTime(0.001,time+0.08);osc.start(time);osc.stop(time+0.1);}catch(e){console.log('Metronome click play error:',e);}};const updatePlayhead=()=>{if(recordingStateRef.current==='RECORDING'){const audioCtx=getAudioContext();const lookahead=0.1;// 100ms +if(window.__applyTrackMuteSolo)window.__applyTrackMuteSolo(st.trackId,null);startOffsetTimeRef.current=offsetWallTime;startBufferOffsetRef.current=offsetBuffer;startAudioTimeRef.current=context.currentTime;};const playMetronomeClick=(time,isDownbeat=false)=>{try{const ctx=getAudioContext();const osc=ctx.createOscillator();const gainNode=ctx.createGain();osc.connect(gainNode);gainNode.connect(masterBus?masterBus.input:ctx.destination);osc.frequency.setValueAtTime(isDownbeat?1000:800,time);gainNode.gain.setValueAtTime(0.08,time);gainNode.gain.exponentialRampToValueAtTime(0.001,time+0.08);osc.start(time);osc.stop(time+0.1);}catch(e){console.log('Metronome click play error:',e);}};// Realtime re-schedule tracking (loop play cập nhật khi items đổi vị trí) +const scheduledItemsSigRef=React.useRef('');const playheadFrameCountRef=React.useRef(0);const pendingRescheduleRef=React.useRef(null);const lastRescheduleTimeRef=React.useRef(0);// Re-schedule NGAY (reset cooldown) sau khi THẢ chuột — check kế tiếp trong +// updatePlayhead (~100ms) re-schedule luôn. +const triggerRescheduleNow=()=>{try{lastRescheduleTimeRef.current=0;}catch(e){}};const updatePlayhead=()=>{// Realtime re-schedule: khi đang play (loop play) mà items (vị trí/speed/ +// duration — kể cả nội dung section tab) thay đổi → dừng + schedule lại từ +// playhead hiện tại để item mới phát đúng vị trí mới (không phát nội dung +// cũ ở vị trí cũ). Kiểm tra ~10fps (mỗi 6 frame) để kéo item cập nhật gần +// như realtime mà không tốn CPU mỗi frame. +if(isPlaying&&activeTabRef.current==='main'&&recordingStateRef.current!=='RECORDING'){playheadFrameCountRef.current++;if(playheadFrameCountRef.current%6===0){// ⚠️ Dùng REFS (không phải state closure) — rAF loop giữ updatePlayhead +// của render cũ nên activeTracks/sessionTabs trong closure là STALE → +// signature không bao giờ đổi khi kéo item → không re-schedule. +const sig=buildItemsSignature(activeTracksRef.current,sessionTabsRef.current);if(sig!==scheduledItemsSigRef.current){// THROTTLE ~300ms: re-schedule định kỳ NGAY CẢ TRONG LÚC KÉO (clip +// kéo đi → âm thanh cũ dừng ≤300ms, clip mới phát khi playhead tới +// vị trí mới — realtime) mà không stop/start mỗi frame (giật). Sau +// khi thả chuột triggerRescheduleNow reset cooldown → re-schedule +// ở check kế tiếp (~100ms). +const nowT=performance.now();if(nowT-(lastRescheduleTimeRef.current||0)>300){lastRescheduleTimeRef.current=nowT;scheduledItemsSigRef.current=sig;const pt=currentTimeRef.current;stopAllPlayback();setIsPlaying(true);// Re-schedule theo ĐÚNG chế độ play hiện tại: loop local / solo chỉ +// phát track liên quan (không phát nhầm track khác); ngược lại play +// toàn session. Cả 2 hàm đều tính playOffset = pt − clip.startTime +// → clip vừa kéo tới đúng playhead phát TỪ ĐẦU clip (realtime). +const curTracks=activeTracksRef.current||activeTracks;const soloed=curTracks.some(t=>t.solo);if(soloed){curTracks.filter(t=>t.solo).forEach(t=>startLocalTrackPlayback(t.id,pt));}else if(selectionMode==='local'&&localSelectionTrackId){startLocalTrackPlayback(localSelectionTrackId,pt);}else{startTrackPlayback(pt);}}}else{pendingRescheduleRef.current=null;}}}if(recordingStateRef.current==='RECORDING'){const audioCtx=getAudioContext();const lookahead=0.1;// 100ms const secondsPerBeat=60.0/(parseInt(bpmRef.current)||120);// Metronome Click Scheduler while(true){const beatNum=nextMetronomeBeatRef.current;const elapsedBeats=beatNum-recordingStartTimeRef.current/secondsPerBeat;const beatTime=startAudioTimeRef.current+elapsedBeats*secondsPerBeat;if(beatTime200){lastTempCompileTimeRef.current=now;// Audio preview @@ -672,7 +717,9 @@ let combinedNotes=[];const armedTracks=activeTracksRef.current.filter(t=>t.isArm if(st.selectionStart!==null&&st.selectionEnd!==null&&st.selectionStart!==st.selectionEnd&&st.isLooping){const start=Math.min(st.selectionStart,st.selectionEnd);const end=Math.max(st.selectionStart,st.selectionEnd);if(bufferPos>=end){stopAllPlayback();setSubTabs(prev=>prev.map(s=>s.id===activeTabRef.current?{...s,currentTime:start,isPlaying:true}:s));schedulePianoRollMidi(st,start);startSubTabPlayback(st,start);animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);return;}}const effectiveDuration=st.type==='PIANO_ROLL'?(()=>{const notes=st.notes||[];const bpmVal=parseInt(bpmRef?.current||bpm)||120;const beatSec=60.0/bpmVal;if(recordingStateRef.current==='RECORDING')return 600.0;// 10 min during recording let maxEnd=0;notes.forEach(n=>{const end=(n.start_beat||0)+(n.duration_beats||1);if(end>maxEnd)maxEnd=end;});return Math.max(maxEnd*beatSec,16*beatSec*4)+1.0;})():st.buffer.duration;if(bufferPos>=effectiveDuration){stopAllPlayback();if(st.isLooping){setSubTabs(prev=>prev.map(s=>s.id===activeTabRef.current?{...s,currentTime:0,isPlaying:true}:s));startSubTabPlayback(st,0);animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);}else{setSubTabs(prev=>prev.map(s=>s.id===activeTabRef.current?{...s,currentTime:0,isPlaying:false}:s));}return;}setSubTabs(prev=>prev.map(s=>s.id===activeTabRef.current?{...s,currentTime:wallTime}:s));animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);return;}if(!isPlaying)return;const context=getAudioContext();const elapsed=context.currentTime-startAudioTimeRef.current;const updatedTime=startOffsetTimeRef.current+elapsed;// Selection Loop - LOOP_MAKER.md + LOOP_EDITOR_2.md §4.2 // If selection cleared by user, play linearly (don't loop) -if(!selectionCleared&&isLoopingSelection&&selLeft!==null&&selRight!==null){if(selRight>selLeft&&updatedTime>=selRight){if(hasAnySolo||selectionMode==='local'){stopAllPlayback();startOffsetTimeRef.current=selLeft;startAudioTimeRef.current=context.currentTime;if(hasAnySolo){const soloed=tracks.filter(t=>t.solo);soloed.forEach(t=>startLocalTrackPlayback(t.id,selLeft));}else{startLocalTrackPlayback(localSelectionTrackId,selLeft);}setCurrentTime(selLeft);setIsPlaying(true);}else{stopAllPlayback();startOffsetTimeRef.current=selLeft;startAudioTimeRef.current=context.currentTime;startTrackPlayback(selLeft);setCurrentTime(selLeft);setIsPlaying(true);}animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);return;}}if(updatedTime>=maxDurationRef.current){if(recordingStateRef.current==='RECORDING'){setCurrentTime(updatedTime);animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);return;}if(isLoopingSelection){stopAllPlayback();startOffsetTimeRef.current=0;startAudioTimeRef.current=context.currentTime;startTrackPlayback(0);setCurrentTime(0);setIsPlaying(true);animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);return;}stopAllPlayback();setCurrentTime(0);return;}setCurrentTime(updatedTime);animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);};useEffect(()=>{if(isPlaying||subTabs.some(s=>s.isPlaying)){animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);}else{cancelAnimationFrame(animationFrameIdRef.current);}return()=>cancelAnimationFrame(animationFrameIdRef.current);},[isPlaying,subTabs,isLoopingSelection,selLeft,selRight,selectionMode,localSelectionTrackId,selectionCleared,activeTab]);// ── FX Nodes ── +if(!selectionCleared&&isLoopingSelection&&selLeft!==null&&selRight!==null){if(selRight>selLeft&&updatedTime>=selRight){if(hasAnySolo||selectionMode==='local'){stopAllPlayback();startOffsetTimeRef.current=selLeft;startAudioTimeRef.current=context.currentTime;if(hasAnySolo){const soloed=tracks.filter(t=>t.solo);soloed.forEach(t=>startLocalTrackPlayback(t.id,selLeft));}else{startLocalTrackPlayback(localSelectionTrackId,selLeft);}setCurrentTime(selLeft);setIsPlaying(true);}else{stopAllPlayback();startOffsetTimeRef.current=selLeft;startAudioTimeRef.current=context.currentTime;startTrackPlayback(selLeft);setCurrentTime(selLeft);setIsPlaying(true);}animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);return;}}// Hết bài: dừng/loop lại tại ENDTIME THẬT của session (projectEnd — không +// buffer 12 bars như maxDuration dùng cho scroll/zoom). +if(updatedTime>=projectEndRef.current){if(recordingStateRef.current==='RECORDING'){setCurrentTime(updatedTime);animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);return;}if(isLoopingSelection){stopAllPlayback();startOffsetTimeRef.current=0;startAudioTimeRef.current=context.currentTime;startTrackPlayback(0);setCurrentTime(0);setIsPlaying(true);animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);return;}stopAllPlayback();setCurrentTime(0);return;}setCurrentTime(updatedTime);animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);};useEffect(()=>{if(isPlaying||subTabs.some(s=>s.isPlaying)){animationFrameIdRef.current=requestAnimationFrame(updatePlayhead);}else{cancelAnimationFrame(animationFrameIdRef.current);}return()=>cancelAnimationFrame(animationFrameIdRef.current);},[isPlaying,subTabs,isLoopingSelection,selLeft,selRight,selectionMode,localSelectionTrackId,selectionCleared,activeTab]);// ── FX Nodes ── const createChorusNode=(context,inputNode,outputNode)=>{const dryGain=context.createGain();dryGain.gain.value=0.6;const wetGain=context.createGain();wetGain.gain.value=0.5;const delayNode=context.createDelay();delayNode.delayTime.value=0.02;const lfo=context.createOscillator();lfo.type='sine';lfo.frequency.value=1.5;const lfoGain=context.createGain();lfoGain.gain.value=0.002;lfo.connect(lfoGain);lfoGain.connect(delayNode.delayTime);lfo.start();inputNode.connect(dryGain);inputNode.connect(delayNode);delayNode.connect(wetGain);dryGain.connect(outputNode);wetGain.connect(outputNode);return{stop:()=>{try{lfo.stop();}catch(e){}}};};const createReverbNode=(context,inputNode,outputNode)=>{const dryGain=context.createGain();dryGain.gain.value=0.6;const wetGain=context.createGain();wetGain.gain.value=0.4;const convolver=context.createConvolver();const rate=context.sampleRate;const len=rate*2.0;const impulse=context.createBuffer(2,len,rate);const left=impulse.getChannelData(0);const right=impulse.getChannelData(1);for(let i=0;i{if(!track)return null;let node=activeTrackNodesRef.current[track.id];if(!node){const gainNode=context.createGain();const volDb=track.volumeDb??0;const volLinear=volDb<=-50?0:Math.pow(10,volDb/20);gainNode.gain.setValueAtTime(volLinear,context.currentTime);const pannerNode=context.createStereoPanner();pannerNode.pan.setValueAtTime((track.pan??0)/100,context.currentTime);// Ensure master bus is initialized for MAIN OUT routing if(!masterBus)initMasterBus(context);const analyserNode=context.createAnalyser();analyserNode.fftSize=2048;pannerNode.connect(analyserNode);// Wave Observer scope analysers (unified_fx_rack_panel_update.md §III.3): @@ -735,7 +782,9 @@ if(!node.scopeAnalyserL||!node.scopeAnalyserR)return null;return{L:node.scopeAna // node so interactive panels can drive its DSP params in realtime. window.__getTrackFxModule=(trackId,type)=>{const node=activeTrackNodesRef.current[trackId];if(!node)return null;const found=(node.fxMods||[]).find(m=>m&&m.type===type);return found||null;};// Same for the soundfont (MIDI) module instances — lets the EQ PRO panel drive // BOTH the audio-clip chain and the SF chain in realtime. -window.__getTrackSfFxModule=(trackId,type)=>{const node=activeTrackNodesRef.current[trackId];if(!node)return null;const found=(node.sfMods||[]).find(m=>m&&m.type===type);return found||null;};const getOrCreateSubTrackNode=(track,subTrack,context)=>{if(!track||!subTrack)return null;const subKey=track.id+'_sub_'+subTrack.id;let node=activeTrackNodesRef.current[subKey];if(!node){const gainNode=context.createGain();const volDb=subTrack.volumeDb??0;const volLinear=volDb<=-50?0:Math.pow(10,volDb/20);gainNode.gain.setValueAtTime(volLinear,context.currentTime);const parentNode=getOrCreateTrackNode(track,context);gainNode.connect(parentNode);node={gainNode,pannerNode:null};activeTrackNodesRef.current[subKey]=node;}return node.gainNode;};const playMidiPreviewNote=(pitch,velocity=0.8,durationMs=500)=>{if(!window.SonicSF)return;const context=getAudioContext();const tab=subTabs.find(s=>s.id===activeTabRef.current);const trackId=tab?tab.trackId:selectedTrackId;const track=activeTracks.find(t=>t.id===trackId);const destNode=getOrCreateTrackNode(track,context);const program=track?track.instrumentProgram:undefined;var prevCh=track?assignTrackMidiChannel(track,activeTracks):0;window.SonicSF.playNote(pitch,velocity,durationMs,context.currentTime,program,destNode,prevCh,track?track.synth_engine:undefined);};const startTrackPlayback=offsetTime=>{const context=getAudioContext();const allPlayTracks=activeTracksRef.current&&activeTracksRef.current.length?activeTracksRef.current:activeTracks;const hasSolo=allPlayTracks.some(t=>t.solo);allPlayTracks.forEach(track=>{const isPlayable=hasSolo?track.solo:!track.muted;if(!isPlayable)return;const gainNode=getOrCreateTrackNode(track,context);const pannerNode=activeTrackNodesRef.current[track.id].pannerNode;const clips=track.clips&&track.clips.length>0?track.clips:track.buffer?[{id:'default',buffer:track.buffer,startTime:track.startTime||0,name:track.name,speed:track.speed||1.0}]:[];clips.forEach(clip=>{if(!clip.buffer)return;const source=context.createBufferSource();source.buffer=clip.buffer;source.playbackRate.value=clip.speed||1.0;source.connect(gainNode);const clipStart=clip.startTime||0;const clipDuration=clip.buffer.duration/(clip.speed||1.0);const clipEnd=clipStart+clipDuration;if(offsetTime{const node=activeTrackNodesRef.current[trackId];if(!node)return null;const found=(node.sfMods||[]).find(m=>m&&m.type===type);return found||null;};const getOrCreateSubTrackNode=(track,subTrack,context)=>{if(!track||!subTrack)return null;const subKey=track.id+'_sub_'+subTrack.id;let node=activeTrackNodesRef.current[subKey];if(!node){const gainNode=context.createGain();const volDb=subTrack.volumeDb??0;const volLinear=volDb<=-50?0:Math.pow(10,volDb/20);gainNode.gain.setValueAtTime(volLinear,context.currentTime);const parentNode=getOrCreateTrackNode(track,context);gainNode.connect(parentNode);node={gainNode,pannerNode:null};activeTrackNodesRef.current[subKey]=node;}return node.gainNode;};const playMidiPreviewNote=(pitch,velocity=0.8,durationMs=500)=>{if(!window.SonicSF)return;const context=getAudioContext();const tab=subTabs.find(s=>s.id===activeTabRef.current);const trackId=tab?tab.trackId:selectedTrackId;const track=activeTracks.find(t=>t.id===trackId);const destNode=getOrCreateTrackNode(track,context);const program=track?track.instrumentProgram:undefined;var prevCh=track?assignTrackMidiChannel(track,activeTracks):0;window.SonicSF.playNote(pitch,velocity,durationMs,context.currentTime,program,destNode,prevCh,track?track.synth_engine:undefined);};const startTrackPlayback=offsetTime=>{const context=getAudioContext();const allPlayTracks=activeTracksRef.current&&activeTracksRef.current.length?activeTracksRef.current:activeTracks;// Capture items signature at schedule time — updatePlayhead so sánh với +// signature này để phát hiện items đổi vị trí giữa lúc play (re-schedule). +scheduledItemsSigRef.current=buildItemsSignature(allPlayTracks,sessionTabs);console.log('[Play] offset='+offsetTime+' tracks='+allPlayTracks.length+' masterBus='+!!masterBus+' dest='+(context.destination?'ok':'MISSING'));const hasSolo=allPlayTracks.some(t=>t.solo);allPlayTracks.forEach(track=>{const isPlayable=hasSolo?track.solo:!track.muted;if(!isPlayable)return;const gainNode=getOrCreateTrackNode(track,context);const pannerNode=activeTrackNodesRef.current[track.id].pannerNode;console.log('[Play] track',track.id,track.name,'node ok:',!!(gainNode&&pannerNode),'muted:',track.muted);const clips=track.clips&&track.clips.length>0?track.clips:track.buffer?[{id:'default',buffer:track.buffer,startTime:track.startTime||0,name:track.name,speed:track.speed||1.0}]:[];clips.forEach(clip=>{if(!clip.buffer)return;const source=context.createBufferSource();source.buffer=clip.buffer;source.playbackRate.value=clip.speed||1.0;source.connect(gainNode);const clipStart=clip.startTime||0;const clipDuration=clip.buffer.duration/(clip.speed||1.0);const clipEnd=clipStart+clipDuration;if(offsetTime0)&&window.SonicSF){// Preview cache: capture the soundfont (pre track-FX) for fast offline export ensureMidiCapture(track,activeTrackNodesRef.current[track.id]);var trkCh=assignTrackMidiChannel(track,allPlayTracks);// Ensure instrument is loaded in FluidSynth if(track.synth_engine&&track.synth_engine.type==='soundfont'&&track.synth_engine.soundfont_id){window.SonicSF.selectInstrument(trkCh,track.synth_engine.soundfont_bank||0,track.synth_engine.soundfont_program||0,track.synth_engine.soundfont_id);}const bpmVal=parseInt(bpm)||120;const secondsPerBeat=60.0/bpmVal;midiItems.forEach(item=>{const itemEndSec=item.startTime+(item.duration||4);const notes=item.notes||[];notes.forEach(note=>{// note start/duration is in beats (for MIDI items) @@ -776,7 +825,9 @@ setSelectionCleared(false);localSelectionAnchorRef.current=time;setSelectionMode useEffect(()=>{const handleMouseMove=e=>{if(!localDragInProgressRef.current)return;const wrapper=timelineWrapperRef.current;if(!wrapper)return;const rect=wrapper.getBoundingClientRect();const scrollLeft=wrapper.scrollLeft;const mouseX=e.clientX-rect.left+scrollLeft;const time=Math.max(0,Math.min(maxDuration,mouseX/zoom));const anchor=localSelectionAnchorRef.current??localDragStartTimeRef.current;const selS=Math.min(anchor,time);const selE=Math.max(anchor,time);setLocalSelectionStart(selS);setLocalSelectionEnd(selE);setSelectionStart(selS);setSelectionEnd(selE);};const handleMouseUp=()=>{if(localDragInProgressRef.current){localDragInProgressRef.current=false;localDragTrackRef.current=null;localDragStartTimeRef.current=0;pushSelectionUndo();}};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};},[zoom,maxDuration]);const draggedClipRef=useRef(null);draggedClipRef.current=draggedClip;const hoveredTrackIdRef=useRef(null);hoveredTrackIdRef.current=hoveredTrackId;const captureTrackSnapshotRef=useRef(null);captureTrackSnapshotRef.current=captureTrackSnapshot;const draggedSectionItemRef=useRef(null);draggedSectionItemRef.current=draggedSectionItem;const resizedSectionItemRef=useRef(null);resizedSectionItemRef.current=resizedSectionItem;const selectionUndoRef=useRef(null);const pushSelectionUndo=()=>{var cur=selectionRef.current;var before=selectionUndoRef.current;if(!before||before.start===cur.start&&before.end===cur.end&&before.mode===cur.mode)return;var entry={type:'SELECTION',scope:'global',label:'Selection',before:before,after:{start:cur.start,end:cur.end,mode:cur.mode},undo:e=>{setSelectionStart(e.before.start);setSelectionEnd(e.before.end);setSelectionMode(e.before.mode);showToast('Undo: Selection','info');},redo:e=>{setSelectionStart(e.after.start);setSelectionEnd(e.after.end);setSelectionMode(e.after.mode);showToast('Redo: Selection','info');}};if(window.UndoRedoEngine)window.UndoRedoEngine.execute(entry);selectionUndoRef.current=null;};const captureSelectionUndo=()=>{if(selectionUndoRef.current!==null)return;selectionUndoRef.current={start:selectionRef.current.start,end:selectionRef.current.end,mode:selectionMode};};let clipSeqCounter=0;const nextClipId=()=>`clip_${Date.now()}_${++clipSeqCounter}`;const handleClipDragStart=(trackId,clipId,clickOffset,isDuplicate=false)=>{const curTracks=activeTracksRef.current||activeTracks;const track=curTracks.find(t=>t.id===trackId);if(!track)return;const existingClips=track.clips&&track.clips.length>0?track.clips:track.buffer?[{id:'default_'+track.id,buffer:track.buffer,startTime:track.startTime||0,name:track.name}]:[];const clip=existingClips.find(c=>c.id===clipId||clipId==='default'&&c.id==='default_'+track.id);if(!clip)return;const beforeSnap=captureTrackSnapshot(trackId);if(isDuplicate){const cloneId=nextClipId();const clone={...clip,id:cloneId,startTime:clip.startTime||0,name:clip.name+' (Copy)'};updateActiveTracks(prev=>prev.map(t=>{if(t.id===trackId){const newClips=[...existingClips,clone];return{...t,clips:newClips,buffer:newClips[0].buffer,startTime:newClips[0].startTime,name:newClips[0].name};}return t;}));setDraggedClip({trackId,clipId:cloneId,clickOffset,buffer:clip.buffer,name:clip.name+' (Copy)',beforeSnap,isDuplicate:false});return;}if(!track.clips||track.clips.length===0){updateActiveTracks(prev=>prev.map(t=>{if(t.id===trackId){return{...t,clips:existingClips};}return t;}));}setDraggedClip({trackId,clipId:clip.id,clickOffset,buffer:clip.buffer,name:clip.name,beforeSnap,isDuplicate:false});};const handleClipDragStartRef=useRef(null);handleClipDragStartRef.current=handleClipDragStart;const stretchedClipRef=useRef(null);stretchedClipRef.current=stretchedClip;const handleClipStretchStart=(trackId,clipId,clickTime)=>{const curTracks=activeTracksRef.current||activeTracks;const track=curTracks.find(t=>t.id===trackId);if(!track)return;const clips=track.clips&&track.clips.length>0?track.clips:track.buffer?[{id:'default_'+track.id,buffer:track.buffer,startTime:track.startTime||0,name:track.name,speed:track.speed||1.0}]:[];const clip=clips.find(c=>c.id===clipId||clipId==='default'&&c.id==='default_'+trackId);if(!clip||!clip.buffer)return;const beforeSnap=captureTrackSnapshot(trackId);if(!track.clips||track.clips.length===0){updateActiveTracks(prev=>prev.map(t=>t.id===trackId?{...t,clips}:t));}setStretchedClip({trackId,clipId:clip.id==='default'?'default_'+trackId:clip.id,originalDuration:clip.buffer.duration,startTime:clip.startTime,originalSpeed:clip.speed||1.0,beforeSnap});};const handleSelectionEdgeDragStart=(e,trackId,side)=>{const startX=e.clientX;const initialLeft=Math.min(localSelectionStart,localSelectionEnd);const initialRight=Math.max(localSelectionStart,localSelectionEnd);const handleMouseMove=moveEvent=>{const deltaX=moveEvent.clientX-startX;const deltaSec=deltaX/zoom;if(side==='left'){const newLeft=Math.max(0,Math.min(initialRight-0.05,initialLeft+deltaSec));setLocalSelectionStart(newLeft);setLocalSelectionEnd(initialRight);}else{const newRight=Math.max(initialLeft+0.05,Math.min(maxDuration,initialRight+deltaSec));setLocalSelectionStart(initialLeft);setLocalSelectionEnd(newRight);}};const handleMouseUp=()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);};const handleTrackResizeMouseDown=(e,trackId)=>{e.preventDefault();e.stopPropagation();const startY=e.clientY;const track=tracks.find(t=>t.id===trackId);const startHeight=track?track.height||140:140;const handleMouseMove=moveEvent=>{const deltaY=moveEvent.clientY-startY;const newHeight=Math.max(110,Math.min(300,startHeight+deltaY));setTracks(prev=>prev.map(t=>t.id===trackId?{...t,height:newHeight}:t));};const handleMouseUp=()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);};const deleteTrack=trackId=>{const sessionTab=sessionTabs.find(s=>s.id===activeTab);const trackList=sessionTab?sessionTab.tracks:tracks;const track=trackList.find(t=>t.id===trackId);if(!track)return;const hasClips=track.clips&&track.clips.length>0||!!track.buffer;const hasMidi=track.midiItems&&track.midiItems.length>0;const hasSections=track.sections&&track.sections.length>0;const isTrackEmpty=!hasClips&&!hasMidi&&!hasSections;if(!isTrackEmpty){showToast('Không thể xoá track chứa dữ liệu. Vui lòng xoá hết các item trước khi xoá track.','warning');return;}if(sessionTab){updateActiveTracks(prev=>{const filtered=prev.filter(t=>t.id!==trackId);if(filtered.length>0)setSelectedTrackId(filtered[0].id);return filtered;});}else{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>{const filtered=prev.filter(t=>t.id!==trackId);if(filtered.length>0)setSelectedTrackId(filtered[0].id);return filtered;});}showToast('Đã xóa track.','info');};// Shared auto-scroll: when mouse near right edge, scroll container right const autoScrollTimeline=clientX=>{const wrapper=timelineWrapperRef.current;if(!wrapper)return;const wr=wrapper.getBoundingClientRect();const margin=200;if(clientX>wr.right-margin){const depth=(clientX-(wr.right-margin))/margin;const speed=Math.round(5+depth*depth*40);wrapper.scrollLeft+=speed;if(wrapper.scrollLeft>wrapper.scrollWidth-wrapper.clientWidth-100){const secPerBar=60.0/(parseInt(bpm)||120)*4;setScrollBufferExtra(prev=>prev+secPerBar*4);}}else if(clientX{const handleMouseMove=e=>{const drag=draggedClipRef.current;if(!drag)return;const wrapper=timelineWrapperRef.current;if(!wrapper)return;autoScrollTimeline(e.clientX);const rect=wrapper.getBoundingClientRect();const scrollLeft=wrapper.scrollLeft;const mouseX=e.clientX-rect.left+scrollLeft;const time=Math.max(0,mouseX/zoom-leadInMarginRef.current);const beatSec=60.0/(parseInt(bpmRef.current)||120);const rawStart=Math.max(0,time-drag.clickOffset);const secPerBar=beatSec*4;const marginBar=maxDurationRef.current-secPerBar;const clampedStart=Math.min(rawStart,marginBar);const newStart=snapTime(Math.max(0,clampedStart),snapValueRef.current,bpmRef.current);const itemPx=newStart*zoom;const keepMargin=80;if(itemPx>scrollLeft+rect.width-keepMargin){wrapper.scrollLeft=itemPx-rect.width+keepMargin;setCanvasRedrawCount(n=>n+1);}else if(itemPxn+1);}const targetTrackId=hoveredTrackIdRef.current||drag.trackId;updateActiveTracks(prev=>prev.map(t=>{// Clear the clip from its previous track if it moved to a new track if(t.id===drag.trackId&&drag.trackId!==targetTrackId){const updatedClips=(t.clips||[]).filter(c=>c.id!==drag.clipId);return{...t,clips:updatedClips,buffer:updatedClips.length>0?updatedClips[0].buffer:null,startTime:updatedClips.length>0?updatedClips[0].startTime:0,name:updatedClips.length>0?updatedClips[0].name:`Track ${t.id}`};}// Update/set clip on target track -if(t.id===targetTrackId){const existingClips=t.clips&&t.clips.length>0?t.clips:t.buffer?[{id:'default_'+t.id,buffer:t.buffer,startTime:t.startTime||0,name:t.name}]:[];const hasClip=existingClips.some(c=>c.id===drag.clipId);let updatedClips;if(hasClip){updatedClips=existingClips.map(c=>c.id===drag.clipId?{...c,startTime:newStart}:c);}else{updatedClips=[...existingClips,{id:drag.clipId,buffer:drag.buffer,startTime:newStart,name:drag.name}];}return{...t,clips:updatedClips,buffer:updatedClips[0].buffer,startTime:updatedClips[0].startTime,name:updatedClips[0].name};}return t;}));if(drag.trackId!==targetTrackId){setDraggedClip(prev=>({...prev,trackId:targetTrackId}));}};const handleMouseUp=()=>{const drag=draggedClipRef.current;if(!drag)return;const afterSnap=captureTrackSnapshotRef.current(drag.trackId);pushAction('MOVE_CLIP',drag.trackId,drag.beforeSnap,afterSnap);setDraggedClip(null);showToast('Đã di chuyển clip.','success');};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};},[zoom]);// Document-level mousemove/mouseup for clip stretching +if(t.id===targetTrackId){const existingClips=t.clips&&t.clips.length>0?t.clips:t.buffer?[{id:'default_'+t.id,buffer:t.buffer,startTime:t.startTime||0,name:t.name}]:[];const hasClip=existingClips.some(c=>c.id===drag.clipId);let updatedClips;if(hasClip){updatedClips=existingClips.map(c=>c.id===drag.clipId?{...c,startTime:newStart}:c);}else{updatedClips=[...existingClips,{id:drag.clipId,buffer:drag.buffer,startTime:newStart,name:drag.name}];}return{...t,clips:updatedClips,buffer:updatedClips[0].buffer,startTime:updatedClips[0].startTime,name:updatedClips[0].name};}return t;}));if(drag.trackId!==targetTrackId){setDraggedClip(prev=>({...prev,trackId:targetTrackId}));}};const handleMouseUp=()=>{const drag=draggedClipRef.current;if(!drag)return;const afterSnap=captureTrackSnapshotRef.current(drag.trackId);pushAction('MOVE_CLIP',drag.trackId,drag.beforeSnap,afterSnap);setDraggedClip(null);showToast('Đã di chuyển clip.','success');// Realtime: clip vừa thả — re-schedule NGAY để phát theo vị trí mới +// (kéo clip về đúng playhead → phát ngay, không chờ debounce). +triggerRescheduleNow();};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};},[zoom]);// Document-level mousemove/mouseup for clip stretching useEffect(()=>{const handleMouseMove=e=>{const stretch=stretchedClipRef.current;if(!stretch)return;autoScrollTimeline(e.clientX);const wrapper=timelineWrapperRef.current;if(!wrapper)return;const rect=wrapper.getBoundingClientRect();const scrollLeft=wrapper.scrollLeft;const mouseX=e.clientX-rect.left+scrollLeft;const time=mouseX/zoom;const secPerBar=60.0/(parseInt(bpmRef.current)||120)*4;const marginBar=maxDurationRef.current-secPerBar;const maxEnd=Math.min(time,marginBar);const newDuration=Math.max(0.1,maxEnd-stretch.startTime);const speedRatio=stretch.originalDuration/newDuration;updateActiveTracks(prev=>prev.map(t=>{if(t.id===stretch.trackId){const updatedClips=(t.clips||[]).map(c=>{if(c.id===stretch.clipId){return{...c,speed:speedRatio};}return c;});return{...t,clips:updatedClips,buffer:updatedClips[0]?.buffer,startTime:updatedClips[0]?.startTime||0,speed:updatedClips[0]?.speed||1.0};}return t;}));};const handleMouseUp=()=>{const stretch=stretchedClipRef.current;if(!stretch)return;const afterSnap=captureTrackSnapshotRef.current(stretch.trackId);pushAction('STRETCH_CLIP',stretch.trackId,stretch.beforeSnap,afterSnap);setStretchedClip(null);showToast('Đã giãn thời gian clip.','success');};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};},[zoom]);// ── Deselect single item ── const handleDeselectItem=itemId=>{captureSelectionUndo();setSelectedItemIds(prev=>{var next=new Set(prev);next.delete(itemId);return next;});};// ── Add item to selectedItemIds ── const handleSaveSectionTabRef=useRef(handleSaveSectionTab);handleSaveSectionTabRef.current=handleSaveSectionTab;const handleAddToSelection=itemId=>{captureSelectionUndo();setSelectedItemIds(prev=>{var next=new Set(prev);next.add(itemId);return next;});};const handleSetPendingDrag=(trackId,itemType,itemId,clickOffset,e,preToggleSnapshot)=>{// Compute selectedIds AFTER the toggle that just happened: @@ -797,7 +848,8 @@ var dragBaseTrackId=drag.multiIds&&drag.multiIds[drag.itemId]?drag.multiIds[drag var baseIdx=allTrks.findIndex(function(tr){return tr.id===dragBaseTrackId;});if(baseIdx<0)baseIdx=0;var trgIdx=allTrks.findIndex(function(tr){return tr.id===targetTrackId;});if(trgIdx<0)trgIdx=allTrks.length-1;if(trgIdx<0)trgIdx=0;var crossOffset=trgIdx-baseIdx;// Special path for multi-select drag: handle items from multiple tracks if(drag.multiIds){var dragOrigStart=drag.multiIds[drag.itemId]?drag.multiIds[drag.itemId].start:0;var delta=newStart-dragOrigStart;// Extend activeTracks if target track index exceeds track count var outTracks=[];Object.keys(drag.multiIds).forEach(function(mid){var inf=drag.multiIds[mid];var oIdx=allTrks.findIndex(function(tr){return tr.id===inf.trackId;});if(oIdx<0)oIdx=baseIdx;var needIdx=oIdx+crossOffset;if(needIdx>=allTrks.length){for(var ai=allTrks.length;ai<=needIdx;ai++){var exists=outTracks.some(function(ot){return ot.id===(ai+1).toString();});if(!exists){var colors=['#0f766e','#1d4ed8','#701a75','#a21caf','#b45309'];outTracks.push({id:(ai+1).toString(),name:'Track '+(ai+1),buffer:null,startTime:0,volumeDb:0,pan:0,muted:false,solo:false,color:colors[ai%colors.length],clips:[],midiItems:[],sections:[],markers:[],isArmed:false,height:140});}}}});updateActiveTracks(function(prev){var trkIds=prev.map(function(tr){return tr.id;});var merged=outTracks.length>0?prev.concat(outTracks.filter(function(ot){return!trkIds.includes(ot.id);})):prev;var allIds=merged.map(function(tr){return tr.id;});return merged.map(function(t){var resS=(t.sections||[]).slice();var resM=(t.midiItems||[]).slice();var resC=(t.clips||[]).slice();Object.keys(drag.multiIds).forEach(function(mid){var inf=drag.multiIds[mid];var newVal=inf.start+delta;var oIdx=allIds.indexOf(inf.trackId);if(oIdx<0)oIdx=baseIdx;var needIdx=Math.max(0,oIdx+crossOffset);var targetTid=needIdx{const drag=draggedSectionItemRef.current;if(!drag)return;var changed=false;var trackId=drag.trackId;var beforeSnap=drag.beforeSnap;var origs=drag.originalPositions||{};updateActiveTracks(function(prev){return prev.map(function(t){var allItemIds=Object.keys(origs);var updatedSections=(t.sections||[]).slice();var updatedMidi=(t.midiItems||[]).slice();var hasChange=false;for(var i=0;i0.001){hasChange=true;changed=true;}}}}if(!hasChange)return t;return{...t,sections:updatedSections,midiItems:updatedMidi};});});if(changed||drag.beforeSnap){var afterSnap=captureAllTracksSnapshot();pushAction('MOVE_ITEM','ALL_TRACKS',drag.beforeSnap||beforeSnap,afterSnap);}if(drag.itemType==='midiItem'){let finalTrackId=null;const curTrks=activeTracksRef.current||activeTracks;for(const t of curTrks){if((t.midiItems||[]).some(m=>m.id===drag.itemId)){finalTrackId=t.id;break;}}if(finalTrackId){const targetTrack=curTrks.find(t=>t.id===finalTrackId);if(targetTrack){setSubTabs(prev=>prev.map(st=>{if(st.target_id===drag.itemId){return{...st,trackId:finalTrackId,instrumentProgram:targetTrack.instrumentProgram!==undefined?targetTrack.instrumentProgram:st.instrumentProgram,instrumentName:targetTrack.instrumentName||st.instrumentName};}return st;}));}}}setDraggedSectionItem(null);showToast('Đã di chuyển '+(drag.itemType==='section'?'section':'MIDI item')+'.','success');};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};},[zoom,activeTab,sessionTabs]);// ── Pending drag: click selects; mousemove > 5px threshold starts the real drag ── +updateActiveTracks(function(prev){let movedItem=null;for(let track of prev){const sec=(track.sections||[]).find(function(it){return it.id===drag.itemId;});const mid=(track.midiItems||[]).find(function(it){return it.id===drag.itemId;});if(sec||mid){movedItem=sec||mid;break;}}return prev.map(function(tr){var its=drag.itemType==='section'?(tr.sections||[]).filter(function(it){return it.id!==drag.itemId;}):(tr.midiItems||[]).filter(function(it){return it.id!==drag.itemId;});if(tr.id===targetTrackId&&movedItem){its.push(drag.itemType==='section'?{...movedItem,start:newStart}:{...movedItem,startTime:newStart});}return drag.itemType==='section'?{...tr,sections:its}:{...tr,midiItems:its};});});}};const handleMouseUp=()=>{const drag=draggedSectionItemRef.current;if(!drag)return;var changed=false;var trackId=drag.trackId;var beforeSnap=drag.beforeSnap;var origs=drag.originalPositions||{};updateActiveTracks(function(prev){return prev.map(function(t){var allItemIds=Object.keys(origs);var updatedSections=(t.sections||[]).slice();var updatedMidi=(t.midiItems||[]).slice();var hasChange=false;for(var i=0;i0.001){hasChange=true;changed=true;}}}}if(!hasChange)return t;return{...t,sections:updatedSections,midiItems:updatedMidi};});});if(changed||drag.beforeSnap){var afterSnap=captureAllTracksSnapshot();pushAction('MOVE_ITEM','ALL_TRACKS',drag.beforeSnap||beforeSnap,afterSnap);}// Realtime: items vừa thả — re-schedule NGAY theo vị trí mới. +triggerRescheduleNow();if(drag.itemType==='midiItem'){let finalTrackId=null;const curTrks=activeTracksRef.current||activeTracks;for(const t of curTrks){if((t.midiItems||[]).some(m=>m.id===drag.itemId)){finalTrackId=t.id;break;}}if(finalTrackId){const targetTrack=curTrks.find(t=>t.id===finalTrackId);if(targetTrack){setSubTabs(prev=>prev.map(st=>{if(st.target_id===drag.itemId){return{...st,trackId:finalTrackId,instrumentProgram:targetTrack.instrumentProgram!==undefined?targetTrack.instrumentProgram:st.instrumentProgram,instrumentName:targetTrack.instrumentName||st.instrumentName};}return st;}));}}}setDraggedSectionItem(null);showToast('Đã di chuyển '+(drag.itemType==='section'?'section':'MIDI item')+'.','success');};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};},[zoom,activeTab,sessionTabs]);// ── Pending drag: click selects; mousemove > 5px threshold starts the real drag ── useEffect(()=>{const handleMouseMove=e=>{var pd=pendingDragRef.current;if(!pd)return;var dx=e.clientX-pd.startX;if(Math.abs(dx)>5){var pdSnap=pendingDragRef.current;pendingDragRef.current=null;if(pdSnap.itemType==='clip'&&!pdSnap.duplicate&&(!pdSnap.selectedIds||pdSnap.selectedIds.size<=1)){// Single clip move → clip drag machinery if(handleClipDragStartRef.current)handleClipDragStartRef.current(pdSnap.trackId,pdSnap.itemId,pdSnap.clickOffset,false);}else if(handleSectionItemDragStartRef.current){handleSectionItemDragStartRef.current(pdSnap.trackId,pdSnap.itemType,pdSnap.itemId,pdSnap.clickOffset,!!pdSnap.duplicate,pdSnap.selectedIds);}}};document.addEventListener('mousemove',handleMouseMove);var handleMouseUp=function(){pendingDragRef.current=null;};document.addEventListener('mouseup',handleMouseUp);return function(){document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);pendingDragRef.current=null;};},[]);// ── Document-level mousemove/mouseup for Section/MIDI item resize ── useEffect(()=>{const handleMouseMove=e=>{const resize=resizedSectionItemRef.current;if(!resize)return;const wrapper=timelineWrapperRef.current;if(!wrapper)return;autoScrollTimeline(e.clientX);const rect=wrapper.getBoundingClientRect();const scrollLeft=wrapper.scrollLeft;const mouseX=e.clientX-rect.left+scrollLeft;const time=Math.max(0,mouseX/zoom-leadInMarginRef.current);updateActiveTracks(prev=>prev.map(t=>{if(t.id!==resize.trackId)return t;const items=resize.itemType==='section'?[...(t.sections||[])]:[...(t.midiItems||[])];const idx=items.findIndex(it=>it.id===resize.itemId);if(idx===-1)return t;const item=items[idx];if(resize.side==='left'){const beatSec=60.0/(parseInt(bpm)||120);const newStart=Math.max(0,Math.min(time,resize.originalStart+resize.originalDuration-0.1));const end=resize.originalStart+resize.originalDuration;const newDuration=end-newStart;if(newDuration<0.1)return t;items[idx]=resize.itemType==='section'?{...item,start:newStart,duration:newDuration}:{...item,startTime:newStart,duration:newDuration};}else{const secondsPerBar=60.0/(parseInt(bpm)||120)*4;const marginBar=maxDurationRef.current-secondsPerBar;const clampedTime=Math.min(time,marginBar);const snappedDuration=snapValueRef.current!=='free'?snapTime(clampedTime-resize.originalStart,snapValueRef.current,bpm):clampedTime-resize.originalStart;const newDuration=Math.max(0.1,snappedDuration);items[idx]={...item,duration:newDuration};}return resize.itemType==='section'?{...t,sections:items}:{...t,midiItems:items};}));setCanvasRedrawCount(n=>n+1);const edgePx=(resize.side==='left'?Math.max(0,time):time)*zoom;const keepMargin=80;if(edgePx>scrollLeft+rect.width-keepMargin){wrapper.scrollLeft=edgePx-rect.width+keepMargin;setCanvasRedrawCount(n=>n+1);}else if(edgePxn+1);}};const handleMouseUp=()=>{const resize=resizedSectionItemRef.current;if(!resize)return;setResizedSectionItem(null);};document.addEventListener('mousemove',handleMouseMove);document.addEventListener('mouseup',handleMouseUp);return()=>{document.removeEventListener('mousemove',handleMouseMove);document.removeEventListener('mouseup',handleMouseUp);};},[zoom,activeTab,sessionTabs]);// ── Sweep Select mousemove/mouseup ── @@ -852,14 +904,18 @@ clientSideExport(exportTracks);}};// ── Realtime Bounce Export (đầy đủ // trong OfflineAudioContext. Vì vậy bounce REALTIME: chạy lại toàn bộ project // (audio + MIDI + sections qua FX racks + mastering chain, đúng như nghe) và // capture PCM từ master bus, sau đó encode WAV trung thực. -const triggerBounceExport=async()=>{if(!masterBus){showToast("Hãy phát thử một lần để khởi tạo audio engine trước.","warning");return;}if(isExporting)return;setIsExporting(true);const audioCtx=getAudioContext();try{const allTracks=activeTracksRef.current&&activeTracksRef.current.length?activeTracksRef.current:tracks;let durationLimit=1.0;allTracks.forEach(t=>{const clips=t.clips&&t.clips.length>0?t.clips:t.buffer?[{startTime:t.startTime||0,buffer:t.buffer,speed:t.speed||1.0}]:[];clips.forEach(c=>{if(c.buffer)durationLimit=Math.max(durationLimit,(c.startTime||0)+c.buffer.duration/(c.speed||1.0));});(t.midiItems||[]).forEach(m=>{if(m.endTime)durationLimit=Math.max(durationLimit,m.endTime);else if(m.startTime)durationLimit=Math.max(durationLimit,m.startTime+(m.duration||8));});});(sessionTabs||[]).forEach(s=>(s.tracks||[]).forEach(t=>{(t.midiItems||[]).forEach(m=>{if(m.endTime)durationLimit=Math.max(durationLimit,m.endTime);else if(m.startTime)durationLimit=Math.max(durationLimit,m.startTime+(m.duration||8));});}));durationLimit+=1.2;// FX/mastering tail +const triggerBounceExport=async()=>{if(!masterBus){showToast("Hãy phát thử một lần để khởi tạo audio engine trước.","warning");return;}if(isExporting)return;setIsExporting(true);const audioCtx=getAudioContext();try{const allTracks=activeTracksRef.current&&activeTracksRef.current.length?activeTracksRef.current:tracks;// MAIN SESSION end time (items trên track main — sections tính theo bounds, +// không kéo dài theo nội dung SECTION-TAB) — bounce không cắt sớm/cắt thiếu. +let durationLimit=Math.max(1.0,computeMainSessionEndTime(allTracks));durationLimit+=1.2;// FX/mastering tail const captureRate=audioCtx.sampleRate||44100;const bitDepth=parseInt(exportSettings.bitDepth)||16;const outChannels=exportSettings.channels==='mono'?1:2;showToast(`Bounce realtime ~${Math.round(durationLimit)}s — giữ nguyên âm thanh đang phát...`,"info");// Capture tap on the master bus output (post-FX + post-mastering) const chunks=[];const script=audioCtx.createScriptProcessor(4096,2,2);script.onaudioprocess=e=>{const L=e.inputBuffer.getChannelData(0);const R=e.inputBuffer.getChannelData(1);const n=L.length;const chunk=new Float32Array(n*2);for(let i=0;isetTimeout(res,Math.ceil(durationLimit*1000)+900));stopAllPlayback();try{if(window.SonicSF&&window.SonicSF.stopAllNotes)window.SonicSF.stopAllNotes();}catch(e){}try{script.disconnect();}catch(e){}try{masterBus.output.disconnect(script);}catch(e){}// Encode interleaved PCM chunks → WAV const totalFrames=chunks.reduce((a,c)=>a+c.length/2,0);const stereoBuf=new Float32Array(totalFrames*2);let off=0;chunks.forEach(c=>{stereoBuf.set(c,off);off+=c.length;});const frames=totalFrames;const bytesPerSample=bitDepth/8;const headerSize=44;const fileSizeBytes=headerSize+frames*bytesPerSample*outChannels;const view=new DataView(new ArrayBuffer(fileSizeBytes));const writeString=(o,s)=>{for(let i=0;i{const finalName=name||projectName||'Dự án mới';const localId=currentProjectId&¤tProjectId.startsWith('local_')?currentProjectId:'local_'+Date.now();const projectSchemaObj=serializeProjectToSchema(localId,finalName,bpm,tracks,subTabs,sessionTabs,masteringSettings);const dataStr=JSON.stringify(projectSchemaObj);localStorage.setItem('sonic_local_project_data',dataStr);localStorage.setItem('sonic_project_id',localId);localStorage.setItem('sonic_project_name',finalName);setCurrentProjectId(localId);setProjectName(finalName);window.SonicStorage.exportProjectToSFS(projectSchemaObj);showToast(`Đã lưu dự án local "${finalName}" thành công!`,"success");};const handleSaveCloudProject=async(name,existingProjectId)=>{const finalName=name||projectName||'Dự án mới';var useProjectId=existingProjectId||currentProjectId;const projectSchemaObj=serializeProjectToSchema(useProjectId||'project_'+Date.now(),finalName,bpm,tracks,subTabs,sessionTabs,masteringSettings);// Diagnostic: count source vs serialized items -var srcMidi=0,srcClip=0,srcSec=0;tracks.forEach(function(t){srcMidi+=(t.midiItems||[]).length;srcClip+=(t.clips||[]).length;srcSec+=(t.sections||[]).length;});var serItems=0;if(projectSchemaObj.main_session&&projectSchemaObj.main_session.tracks){projectSchemaObj.main_session.tracks.forEach(function(st){if(st.items)serItems+=st.items.length;});}Object.keys(projectSchemaObj.section_store||{}).forEach(function(sk){(projectSchemaObj.section_store[sk].tracks||[]).forEach(function(st){if(st.items)serItems+=st.items.length;});});const dataJson=JSON.stringify(projectSchemaObj);try{if(existingProjectId){await window.SonicAPI.updateCloudProject(existingProjectId,finalName,dataJson);setProjectName(finalName);setCurrentProjectId(existingProjectId);localStorage.setItem('sonic_project_name',finalName);localStorage.setItem('sonic_project_id',existingProjectId);showToast('Đã ghi đè Cloud "'+finalName+'" (src midi='+srcMidi+' clip='+srcClip+' sec='+srcSec+' | ser='+serItems+').','success');}else if(currentProjectId&&!currentProjectId.startsWith('local_')){await window.SonicAPI.updateCloudProject(currentProjectId,finalName,dataJson);setProjectName(finalName);localStorage.setItem('sonic_project_name',finalName);localStorage.setItem('sonic_project_id',currentProjectId);showToast('Đã lưu Cloud "'+finalName+'" (src midi='+srcMidi+' clip='+srcClip+' sec='+srcSec+' | ser='+serItems+' id='+currentProjectId+').',serItems===0?'warning':'success');}else{const res=await window.SonicAPI.saveCloudProject(finalName,dataJson);const newProjId=res.project_id;setProjectName(finalName);localStorage.setItem('sonic_project_name',finalName);if(newProjId){setCurrentProjectId(newProjId);localStorage.setItem('sonic_project_id',newProjId);}showToast('Đã lưu Cloud mới "'+finalName+'" (src midi='+srcMidi+' clip='+srcClip+' sec='+srcSec+' | ser='+serItems+').',serItems===0?'warning':'success');}}catch(err){showToast(err.message||"Lỗi lưu dự án lên Cloud","error");}};const handleSaveProject=async()=>{if(!currentProjectId){setSaveProjectModalOpen(true);return;}if(currentProjectId.startsWith('local_')){handleSaveLocalProject(projectName);}else{if(!currentUser){showToast('Cần đăng nhập để lưu Cloud. currentUser='+(currentUser?'OK':'NULL')+' token='+(localStorage.getItem('sonic_token')?'exists':'missing'),'warning');return;}handleSaveCloudProject(projectName);}};const handleSaveProjectRef=useRef(handleSaveProject);handleSaveProjectRef.current=handleSaveProject;const handleSaveAsCloud=async newName=>{const projectSchemaObj=serializeProjectToSchema('project_'+Date.now(),newName,bpm,tracks,subTabs,sessionTabs,masteringSettings);const dataJson=JSON.stringify(projectSchemaObj);try{const res=await window.SonicAPI.saveCloudProject(newName,dataJson);const newProjId=res.project_id;setProjectName(newName);localStorage.setItem('sonic_project_name',newName);if(newProjId){setCurrentProjectId(newProjId);localStorage.setItem('sonic_project_id',newProjId);}showToast(`Đã lưu dự án dưới tên mới "${newName}" lên server!`,"success");}catch(err){showToast(err.message||"Lỗi Save As lên server","error");}};const handleSaveCloud=handleSaveProject;const handleExportSFS=(customName=null)=>{const finalName=customName||projectName||'Dự án SonicForge';const projectSchemaObj=serializeProjectToSchema(currentProjectId||'proj_'+Date.now(),finalName,bpm,tracks,subTabs,sessionTabs,masteringSettings);window.SonicStorage.exportProjectToSFS(projectSchemaObj);showToast("Đã xuất dự án (.sfs) thành công!","success");};const handleImportSFS=()=>{const input=document.createElement('input');input.type='file';input.accept='.sfs,application/json';input.onchange=async e=>{if(!e.target.files[0])return;try{const proj=await window.SonicStorage.importProjectFromSFSFile(e.target.files[0]);let restored=[];let restoredBpm=bpm;let restoredSessionTabs=[];let restoredSubTabs=[];if(proj.main_session){const result=deserializeProjectFromSchema(proj);restored=result.tracks;restoredBpm=result.bpm;restoredSessionTabs=result.sessionTabs;restoredSubTabs=result.subTabs;if(result.masteringSettings)setMasteringSettings(result.masteringSettings);}else{restored=(proj.tracks||[]).map(t=>({...t,buffer:null,channelInfo:t.channelInfo||null,clips:t.clips||[],serverFileId:t.serverFileId||null}));}if(restored.length>0){setTracks(restored);loadAudioBuffersForTracks(restored);setBpm(restoredBpm.toString());setProjectName(proj.name||'Dự án mới');setCurrentProjectId(null);if(restoredSessionTabs.length>0)setSessionTabs(restoredSessionTabs);if(restoredSubTabs.length>0)setSubTabs(restoredSubTabs);localStorage.setItem('sonic_project_name',proj.name||'Dự án mới');localStorage.removeItem('sonic_project_id');showToast(`Đã nạp dự án "${proj.name||'Dự án mới'}" từ tệp .sfs thành công!`,"success");}}catch(err){showToast(err.message||"Lỗi mở tệp .sfs","error");}};input.click();};const clientSideExport=async activeTracks=>{setIsExporting(true);showToast("Đang trộn âm thanh đa kênh (Offline Mixdown)...","info");try{const targetRate=parseInt(exportSettings.sampleRate);const bitDepth=parseInt(exportSettings.bitDepth);const durationLimit=Math.max(...activeTracks.map(t=>{const clips=t.clips&&t.clips.length>0?t.clips:t.buffer?[{id:'default',buffer:t.buffer,startTime:t.startTime||0,name:t.name,speed:t.speed||1.0}]:[];if(clips.length===0)return 0;return Math.max(...clips.map(c=>(c.startTime||0)+c.buffer.duration/(c.speed||1.0)));}));// Include preview-captured MIDI cache length (soundfont tracks have no clips) +var srcMidi=0,srcClip=0,srcSec=0;tracks.forEach(function(t){srcMidi+=(t.midiItems||[]).length;srcClip+=(t.clips||[]).length;srcSec+=(t.sections||[]).length;});var serItems=0;if(projectSchemaObj.main_session&&projectSchemaObj.main_session.tracks){projectSchemaObj.main_session.tracks.forEach(function(st){if(st.items)serItems+=st.items.length;});}Object.keys(projectSchemaObj.section_store||{}).forEach(function(sk){(projectSchemaObj.section_store[sk].tracks||[]).forEach(function(st){if(st.items)serItems+=st.items.length;});});const dataJson=JSON.stringify(projectSchemaObj);try{if(existingProjectId){await window.SonicAPI.updateCloudProject(existingProjectId,finalName,dataJson);setProjectName(finalName);setCurrentProjectId(existingProjectId);localStorage.setItem('sonic_project_name',finalName);localStorage.setItem('sonic_project_id',existingProjectId);showToast('Đã ghi đè Cloud "'+finalName+'" (src midi='+srcMidi+' clip='+srcClip+' sec='+srcSec+' | ser='+serItems+').','success');}else if(currentProjectId&&!currentProjectId.startsWith('local_')){await window.SonicAPI.updateCloudProject(currentProjectId,finalName,dataJson);setProjectName(finalName);localStorage.setItem('sonic_project_name',finalName);localStorage.setItem('sonic_project_id',currentProjectId);showToast('Đã lưu Cloud "'+finalName+'" (src midi='+srcMidi+' clip='+srcClip+' sec='+srcSec+' | ser='+serItems+' id='+currentProjectId+').',serItems===0?'warning':'success');}else{const res=await window.SonicAPI.saveCloudProject(finalName,dataJson);const newProjId=res.project_id;setProjectName(finalName);localStorage.setItem('sonic_project_name',finalName);if(newProjId){setCurrentProjectId(newProjId);localStorage.setItem('sonic_project_id',newProjId);}showToast('Đã lưu Cloud mới "'+finalName+'" (src midi='+srcMidi+' clip='+srcClip+' sec='+srcSec+' | ser='+serItems+').',serItems===0?'warning':'success');}}catch(err){showToast(err.message||"Lỗi lưu dự án lên Cloud","error");}};const handleSaveProject=async()=>{if(!currentProjectId){setSaveProjectModalOpen(true);return;}if(currentProjectId.startsWith('local_')){handleSaveLocalProject(projectName);}else{if(!currentUser){showToast('Cần đăng nhập để lưu Cloud. currentUser='+(currentUser?'OK':'NULL')+' token='+(localStorage.getItem('sonic_token')?'exists':'missing'),'warning');return;}handleSaveCloudProject(projectName);}};const handleSaveProjectRef=useRef(handleSaveProject);handleSaveProjectRef.current=handleSaveProject;const handleSaveAsCloud=async newName=>{const projectSchemaObj=serializeProjectToSchema('project_'+Date.now(),newName,bpm,tracks,subTabs,sessionTabs,masteringSettings);const dataJson=JSON.stringify(projectSchemaObj);try{const res=await window.SonicAPI.saveCloudProject(newName,dataJson);const newProjId=res.project_id;setProjectName(newName);localStorage.setItem('sonic_project_name',newName);if(newProjId){setCurrentProjectId(newProjId);localStorage.setItem('sonic_project_id',newProjId);}showToast(`Đã lưu dự án dưới tên mới "${newName}" lên server!`,"success");}catch(err){showToast(err.message||"Lỗi Save As lên server","error");}};const handleSaveCloud=handleSaveProject;const handleExportSFS=(customName=null)=>{const finalName=customName||projectName||'Dự án SonicForge';const projectSchemaObj=serializeProjectToSchema(currentProjectId||'proj_'+Date.now(),finalName,bpm,tracks,subTabs,sessionTabs,masteringSettings);window.SonicStorage.exportProjectToSFS(projectSchemaObj);showToast("Đã xuất dự án (.sfs) thành công!","success");};const handleImportSFS=()=>{const input=document.createElement('input');input.type='file';input.accept='.sfs,application/json';input.onchange=async e=>{if(!e.target.files[0])return;try{const proj=await window.SonicStorage.importProjectFromSFSFile(e.target.files[0]);let restored=[];let restoredBpm=bpm;let restoredSessionTabs=[];let restoredSubTabs=[];if(proj.main_session){const result=deserializeProjectFromSchema(proj);restored=result.tracks;restoredBpm=result.bpm;restoredSessionTabs=result.sessionTabs;restoredSubTabs=result.subTabs;if(result.masteringSettings)setMasteringSettings(result.masteringSettings);}else{restored=(proj.tracks||[]).map(t=>({...t,buffer:null,channelInfo:t.channelInfo||null,clips:t.clips||[],serverFileId:t.serverFileId||null}));}if(restored.length>0){setTracks(restored);loadAudioBuffersForTracks(restored);setBpm(restoredBpm.toString());setProjectName(proj.name||'Dự án mới');setCurrentProjectId(null);if(restoredSessionTabs.length>0)setSessionTabs(restoredSessionTabs);if(restoredSubTabs.length>0)setSubTabs(restoredSubTabs);localStorage.setItem('sonic_project_name',proj.name||'Dự án mới');localStorage.removeItem('sonic_project_id');showToast(`Đã nạp dự án "${proj.name||'Dự án mới'}" từ tệp .sfs thành công!`,"success");}}catch(err){showToast(err.message||"Lỗi mở tệp .sfs","error");}};input.click();};const clientSideExport=async activeTracks=>{setIsExporting(true);showToast("Đang trộn âm thanh đa kênh (Offline Mixdown)...","info");try{const targetRate=parseInt(exportSettings.sampleRate);const bitDepth=parseInt(exportSettings.bitDepth);// MAIN SESSION end time (items trên track main — sections theo bounds) — +// offline render không cắt sớm; MIDI cache (preview) giữ max với cache. +let durationLimit=Math.max(0.1,computeMainSessionEndTime(activeTracks));// Include preview-captured MIDI cache length (soundfont tracks have no clips) Object.keys(midiCacheRef.current).forEach(id=>{const c=midiCacheRef.current[id];if(c&&c.duration>durationLimit)durationLimit=c.duration;});const outChannels=exportSettings.channels==='mono'?1:2;const offlineCtx=new OfflineAudioContext(outChannels,Math.ceil(targetRate*Math.max(0.1,durationLimit)),targetRate);// Build the FULL graph (per-track FX Rack chains + mastering chain — the // same DSP as playback), so the exported file matches what you hear. const savedMasterBus=masterBus;const offlineNodes={};try{window.currentMasteringSettings=masteringSettings||window.currentMasteringSettings;try{if(typeof stopAllPlayback==='function')stopAllPlayback();}catch(e){}masterBus=null;initMasterBus(offlineCtx);try{toggleMasteringOnMaster(!!(masteringSettings&&masteringSettings.masterConnected),!!(masteringSettings&&masteringSettings.isBypassed));}catch(e){console.warn('offline mastering toggle error:',e);}activeTracks.forEach(t=>{const node=buildOfflineTrackNode(t,offlineCtx,offlineNodes);if(!node)return;const clips=t.clips&&t.clips.length>0?t.clips:t.buffer?[{id:'default',buffer:t.buffer,startTime:t.startTime||0,name:t.name,speed:t.speed||1.0}]:[];clips.forEach(clip=>{if(!clip.buffer)return;const 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