Update server.js

server.js

@@ -29,87 +29,51 @@ const upload = multer({
   limits: { fileSize: 50 * 1024 * 1024 }
 });
 
-// 🎵 PROFESSIONAL AUDIO EFFECTS - PRODUCTION GRADE
+// 🚀 OPTIMIZED EFFECTS - Fast Processing
 const EFFECTS = {
   lofi: {
-    name: "LoFi Hip Hop (Professional)",
-    description: "Deep breathing bass, vinyl warmth, tape saturation",
-    command: `
-      -af "asetrate=44100*0.92,atempo=1.087,lowpass=f=4200:p=1,highpass=f=85:p=1,bass=g=6:f=95:w=0.4,treble=g=-4:f=8000:w=0.6,equalizer=f=250:t=h:width=180:g=-2.5,equalizer=f=1000:t=h:width=500:g=1.5,equalizer=f=3500:t=h:width=1500:g=-1.8,equalizer=f=8000:t=h:width=2500:g=-4,acompressor=threshold=-22dB:ratio=3.5:attack=8:release=140:makeup=3,afftdn=nf=-28:tn=1,acrusher=bits=13:mix=0.28:mode=log:aa=0.5,vibrato=f=0.22:d=0.45,aphaser=in_gain=0.55:out_gain=0.85:delay=2.8:decay=0.45:speed=0.48,aecho=0.55:0.68:48:0.28,aecho=0.45:0.58:95:0.18,extrastereo=m=1.5,volume=1.15,alimiter=level_in=1:level_out=0.95:limit=0.98:attack=6:release=50"
-      -ar 44100 -b:a 256k
-    `
+    name: "LoFi Hip Hop",
+    command: `-filter_complex "[0:a]asetrate=44100*0.92,atempo=1.087,lowpass=f=4200,highpass=f=85,bass=g=6:f=95,treble=g=-4:f=8000,equalizer=f=250:width=180:g=-2.5,equalizer=f=1000:width=500:g=1.5,acompressor=threshold=-22dB:ratio=3.5:attack=8:release=140,vibrato=f=0.22:d=0.45,aecho=0.55:0.68:48:0.28,extrastereo=m=1.5,volume=1.15[out]" -map "[out]" -ar 44100 -b:a 192k`
   },
   
   slowed_reverb: {
-    name: "Slowed + Reverb (TikTok Style)",
-    description: "Deep slow tempo, massive reverb, bass-heavy",
-    command: `
-      -af "atempo=0.82,asetrate=44100*0.93,lowpass=f=6000:p=1,highpass=f=70:p=1,bass=g=5:f=85:w=0.5,treble=g=-3:f=7000:w=0.7,equalizer=f=150:t=h:width=120:g=4,equalizer=f=3000:t=h:width=2000:g=-2,aecho=0.75:0.82:75:0.38,aecho=0.65:0.75:145:0.28,aecho=0.55:0.68:220:0.18,reverb=roomsize=0.92:damping=0.42:wetlevel=0.48:drylevel=0.52:width=1.0,chorus=0.6:0.85:52:0.38:0.22:2,acompressor=threshold=-18dB:ratio=2.8:attack=12:release=180:makeup=2,extrastereo=m=1.8,volume=1.25,alimiter=level_in=1:level_out=0.95:limit=0.98:attack=8:release=80"
-      -ar 44100 -b:a 256k
-    `
+    name: "Slowed + Reverb",
+    command: `-filter_complex "[0:a]atempo=0.82,asetrate=44100*0.93,lowpass=f=6000,highpass=f=70,bass=g=5:f=85,aecho=0.75:0.82:75:0.38,aecho=0.65:0.75:145:0.28,reverb=roomsize=0.92:wetlevel=0.48,chorus=0.6:0.85:52:0.38:0.22:2,acompressor=threshold=-18dB:ratio=2.8:attack=12:release=180,extrastereo=m=1.8,volume=1.25[out]" -map "[out]" -ar 44100 -b:a 192k`
   },
   
   nightcore: {
-    name: "Nightcore (High Energy)",
-    description: "Fast tempo, bright highs, energetic feel",
-    command: `
-      -af "atempo=1.28,asetrate=44100*1.12,highpass=f=120:p=1,treble=g=5:f=6000:w=0.6,equalizer=f=1200:t=h:width=600:g=2.5,equalizer=f=4000:t=h:width=2000:g=3.5,equalizer=f=8000:t=h:width=3000:g=4,bass=g=-2:f=100:w=0.4,aexciter=level_in=1:level_out=1:amount=1.8:drive=4:blend=0.6:freq=7500:ceil=16000,acompressor=threshold=-16dB:ratio=3.2:attack=4:release=35:makeup=3,crystalizer=i=1.5:c=1,extrastereo=m=1.7,volume=1.28,alimiter=level_in=1:level_out=0.96:limit=0.99:attack=4:release=40"
-      -ar 44100 -b:a 256k
-    `
+    name: "Nightcore",
+    command: `-filter_complex "[0:a]atempo=1.28,asetrate=44100*1.12,highpass=f=120,treble=g=5:f=6000,equalizer=f=4000:width=2000:g=3.5,equalizer=f=8000:width=3000:g=4,acompressor=threshold=-16dB:ratio=3.2:attack=4:release=35,crystalizer=i=1.5,extrastereo=m=1.7,volume=1.28[out]" -map "[out]" -ar 44100 -b:a 192k`
   },
   
   vaporwave: {
-    name: "Vaporwave (Retro Aesthetic)",
-    description: "Dreamy pitch, chorus layers, nostalgic vibe",
-    command: `
-      -af "asetrate=44100*0.87,atempo=1.15,lowpass=f=5500:p=1,highpass=f=90:p=1,equalizer=f=400:t=h:width=250:g=3.5,equalizer=f=2500:t=h:width=1500:g=-1.5,equalizer=f=6500:t=h:width=2000:g=-3,aphaser=in_gain=0.65:out_gain=0.82:delay=4.5:decay=0.55:speed=0.32,chorus=0.68:0.88:58:0.42:0.28:2,chorus=0.58:0.78:42:0.35:0.22:2,vibrato=f=0.18:d=0.5,reverb=roomsize=0.72:damping=0.38:wetlevel=0.38:drylevel=0.62:width=0.95,aecho=0.5:0.65:85:0.25,acompressor=threshold=-20dB:ratio=3:attack=10:release=100:makeup=2,extrastereo=m=1.6,volume=1.18,alimiter=level_in=1:level_out=0.94:limit=0.97:attack=7:release=60"
-      -ar 44100 -b:a 256k
-    `
+    name: "Vaporwave",
+    command: `-filter_complex "[0:a]asetrate=44100*0.87,atempo=1.15,lowpass=f=5500,highpass=f=90,equalizer=f=400:width=250:g=3.5,equalizer=f=2500:width=1500:g=-1.5,aphaser=in_gain=0.65:out_gain=0.82:delay=4.5:decay=0.55:speed=0.32,chorus=0.68:0.88:58:0.42:0.28:2,vibrato=f=0.18:d=0.5,reverb=roomsize=0.72:wetlevel=0.38,aecho=0.5:0.65:85:0.25,acompressor=threshold=-20dB:ratio=3:attack=10:release=100,extrastereo=m=1.6,volume=1.18[out]" -map "[out]" -ar 44100 -b:a 192k`
   },
   
   "8d_audio": {
-    name: "8D Audio (360° Immersive)",
-    description: "Circular panning, spatial depth, headphone optimized",
-    command: `
-      -af "apulsator=hz=0.085:mode=sine:width=0.92,extrastereo=m=2.8:c=0,aecho=0.72:0.85:65:0.38,aecho=0.62:0.75:125:0.28,haas=level_in=1:level_out=1:side_gain=0.95:middle_source=mid:middle_phase=1,bass=g=3:f=90:w=0.45,reverb=roomsize=0.65:damping=0.5:wetlevel=0.32:drylevel=0.68:width=1.0,acompressor=threshold=-18dB:ratio=2.5:attack=8:release=90:makeup=2,volume=1.12,alimiter=level_in=1:level_out=0.95:limit=0.98:attack=5:release=50"
-      -ar 44100 -b:a 256k
-    `
+    name: "8D Audio",
+    command: `-filter_complex "[0:a]apulsator=hz=0.085:mode=sine:width=0.92,extrastereo=m=2.8,aecho=0.72:0.85:65:0.38,haas,bass=g=3:f=90,reverb=roomsize=0.65:wetlevel=0.32,acompressor=threshold=-18dB:ratio=2.5:attack=8:release=90,volume=1.12[out]" -map "[out]" -ar 44100 -b:a 192k`
   },
   
   bass_boosted: {
-    name: "Bass Boosted (Sub Heavy)",
-    description: "Maximum sub-bass, club-style punch",
-    command: `
-      -af "bass=g=18:f=95:w=0.35,bass=g=12:f=65:w=0.25,equalizer=f=45:t=h:width=35:g=10,equalizer=f=100:t=h:width=80:g=9,equalizer=f=250:t=h:width=150:g=6,equalizer=f=800:t=h:width=400:g=-2,equalizer=f=4000:t=h:width=2000:g=-4,acompressor=threshold=-24dB:ratio=6:attack=4:release=45:makeup=5,asubboost=dry=0.7:wet=0.3:decay=0.7:feedback=0.6:cutoff=150:slope=1,extrastereo=m=1.4,volume=1.15,alimiter=level_in=1.1:level_out=0.96:limit=0.99:attack=3:release=30:asc=1"
-      -ar 44100 -b:a 256k
-    `
+    name: "Bass Boosted",
+    command: `-filter_complex "[0:a]bass=g=18:f=95,bass=g=12:f=65,equalizer=f=45:width=35:g=10,equalizer=f=100:width=80:g=9,equalizer=f=250:width=150:g=6,acompressor=threshold=-24dB:ratio=6:attack=4:release=45,extrastereo=m=1.4,volume=1.15[out]" -map "[out]" -ar 44100 -b:a 192k`
   },
   
   ambient: {
-    name: "Ambient Chill (Atmospheric)",
-    description: "Ethereal space, long reverb, dreamy texture",
-    command: `
-      -af "asetrate=44100*0.96,atempo=1.042,lowpass=f=7000:p=1,highpass=f=60:p=1,equalizer=f=2000:t=h:width=1500:g=-2.5,equalizer=f=6000:t=h:width=3000:g=-4.5,reverb=roomsize=0.95:damping=0.28:wetlevel=0.55:drylevel=0.45:width=1.0,chorus=0.65:0.88:48:0.42:0.25:3,aecho=0.6:0.75:150:0.32,aecho=0.5:0.65:280:0.22,aecho=0.4:0.55:420:0.15,aphaser=in_gain=0.45:out_gain=0.72:delay=3.8:decay=0.48:speed=0.38,acompressor=threshold=-20dB:ratio=2.2:attack=15:release=200:makeup=1.5,extrastereo=m=1.8,volume=1.08,alimiter=level_in=1:level_out=0.93:limit=0.96:attack=10:release=100"
-      -ar 44100 -b:a 256k
-    `
+    name: "Ambient Chill",
+    command: `-filter_complex "[0:a]asetrate=44100*0.96,atempo=1.042,lowpass=f=7000,highpass=f=60,equalizer=f=2000:width=1500:g=-2.5,reverb=roomsize=0.95:wetlevel=0.55,chorus=0.65:0.88:48:0.42:0.25:3,aecho=0.6:0.75:150:0.32,aphaser=in_gain=0.45:out_gain=0.72:delay=3.8:decay=0.48:speed=0.38,acompressor=threshold=-20dB:ratio=2.2:attack=15:release=200,extrastereo=m=1.8,volume=1.08[out]" -map "[out]" -ar 44100 -b:a 192k`
   },
   
   tiktok_lofi: {
-    name: "TikTok LoFi (Viral Style)",
-    description: "Perfect for TikTok - breathing bass, warm vintage",
-    command: `
-      -af "asetrate=44100*0.90,atempo=1.111,lowpass=f=4500:p=1,highpass=f=80:p=1,bass=g=7:f=90:w=0.45,equalizer=f=200:t=h:width=150:g=-2,equalizer=f=900:t=h:width=450:g=2,equalizer=f=3200:t=h:width=1800:g=-2.5,equalizer=f=7500:t=h:width=2500:g=-5,acompressor=threshold=-20dB:ratio=4:attack=6:release=120:makeup=4,acrusher=bits=12:mix=0.32:mode=log:aa=0.5,vibrato=f=0.25:d=0.5,aphaser=in_gain=0.6:out_gain=0.88:delay=2.5:decay=0.5:speed=0.45,aecho=0.6:0.72:45:0.3,extrastereo=m=1.65,volume=1.22,alimiter=level_in=1:level_out=0.96:limit=0.99:attack=5:release=45"
-      -ar 44100 -b:a 256k
-    `
+    name: "TikTok LoFi",
+    command: `-filter_complex "[0:a]asetrate=44100*0.90,atempo=1.111,lowpass=f=4500,highpass=f=80,bass=g=7:f=90,equalizer=f=900:width=450:g=2,equalizer=f=7500:width=2500:g=-5,acompressor=threshold=-20dB:ratio=4:attack=6:release=120,vibrato=f=0.25:d=0.5,aphaser=in_gain=0.6:out_gain=0.88:delay=2.5:decay=0.5:speed=0.45,aecho=0.6:0.72:45:0.3,extrastereo=m=1.65,volume=1.22[out]" -map "[out]" -ar 44100 -b:a 192k`
   },
   
   chill_lofi: {
-    name: "Chill LoFi (Study Beats)",
-    description: "Relaxing, smooth, perfect for studying",
-    command: `
-      -af "asetrate=44100*0.94,atempo=1.064,lowpass=f=4800:p=1,highpass=f=75:p=1,bass=g=5:f=88:w=0.48,treble=g=-3.5:f=7500:w=0.65,equalizer=f=280:t=h:width=200:g=-1.8,equalizer=f=1200:t=h:width=600:g=1.2,equalizer=f=4000:t=h:width=2000:g=-2.2,acompressor=threshold=-21dB:ratio=3:attack=10:release=150:makeup=2.5,acrusher=bits=13:mix=0.25:mode=log:aa=0.5,vibrato=f=0.2:d=0.42,aecho=0.5:0.65:55:0.25,reverb=roomsize=0.55:damping=0.45:wetlevel=0.28:drylevel=0.72:width=0.85,extrastereo=m=1.5,volume=1.12,alimiter=level_in=1:level_out=0.94:limit=0.97:attack=6:release=55"
-      -ar 44100 -b:a 256k
-    `
+    name: "Chill LoFi",
+    command: `-filter_complex "[0:a]asetrate=44100*0.94,atempo=1.064,lowpass=f=4800,highpass=f=75,bass=g=5:f=88,treble=g=-3.5:f=7500,equalizer=f=1200:width=600:g=1.2,acompressor=threshold=-21dB:ratio=3:attack=10:release=150,vibrato=f=0.2:d=0.42,aecho=0.5:0.65:55:0.25,reverb=roomsize=0.55:wetlevel=0.28,extrastereo=m=1.5,volume=1.12[out]" -map "[out]" -ar 44100 -b:a 192k`
   }
 };
 
@@ -117,22 +81,19 @@ const EFFECTS = {
 app.get('/', (req, res) => {
   res.json({
     status: 'online',
-    message: '🎵 LoFi Remix API - Professional Edition v2.0',
+    message: '🎵 LoFi Remix API v2.0 - Optimized',
     version: '2.0',
+    performance: 'Fast processing with filter_complex',
     total_effects: Object.keys(EFFECTS).length,
     available_effects: Object.keys(EFFECTS).map(key => ({
       id: key,
-      name: EFFECTS[key].name,
-      description: EFFECTS[key].description
+      name: EFFECTS[key].name
     })),
     endpoints: {
       health: 'GET /',
-      process: 'POST /process (with audio file + effect param)',
+      process: 'POST /process',
       download: 'GET /download/:filename',
       effects: 'GET /effects'
-    },
-    usage: {
-      example: 'POST /process with multipart/form-data: audio=<file>&effect=lofi'
     }
   });
 });
@@ -143,24 +104,21 @@ app.get('/effects', (req, res) => {
     total: Object.keys(EFFECTS).length,
     effects: Object.keys(EFFECTS).map(key => ({
       id: key,
-      name: EFFECTS[key].name,
-      description: EFFECTS[key].description
+      name: EFFECTS[key].name
     }))
   });
 });
 
-// 🎵 Process Audio with Selected Effect
+// 🎵 Process Audio
 app.post('/process', upload.single('audio'), async (req, res) => {
   try {
     if (!req.file) {
       return res.status(400).json({ 
         success: false,
-        error: 'No audio file uploaded',
-        hint: 'Send audio file as multipart/form-data with key "audio"'
+        error: 'No audio file uploaded'
       });
     }
 
-    // Get effect from request (default to lofi)
     const effectType = req.body.effect || 'lofi';
     
     if (!EFFECTS[effectType]) {
@@ -168,8 +126,7 @@ app.post('/process', upload.single('audio'), async (req, res) => {
       return res.status(400).json({ 
         success: false,
         error: `Unknown effect: ${effectType}`,
-        available_effects: Object.keys(EFFECTS),
-        hint: 'Use one of the available effect IDs'
+        available_effects: Object.keys(EFFECTS)
       });
     }
 
@@ -178,23 +135,22 @@ app.post('/process', upload.single('audio'), async (req, res) => {
     const outputPath = path.join(outputsDir, outputFilename);
 
     console.log(`🎵 Processing: ${EFFECTS[effectType].name}`);
-    console.log(`📁 Input: ${req.file.originalname}`);
 
-    // Build FFmpeg command with selected effect
-    const effectCommand = EFFECTS[effectType].command.replace(/\s+/g, ' ').trim();
-    const ffmpegCommand = `ffmpeg -i "${inputPath}" ${effectCommand} "${outputPath}"`;
+    const effectCommand = EFFECTS[effectType].command;
+    
+    // Optimized FFmpeg command with faster settings
+    const ffmpegCommand = `ffmpeg -i "${inputPath}" -threads 0 ${effectCommand} -y "${outputPath}"`;
 
-    console.log(`⚙️ Applying effect...`);
+    console.log(`⚙️ Starting FFmpeg...`);
 
-    // Execute FFmpeg
     const startTime = Date.now();
-    await execPromise(ffmpegCommand);
+    await execPromise(ffmpegCommand, {
+      maxBuffer: 50 * 1024 * 1024 // 50MB buffer
+    });
     const processingTime = ((Date.now() - startTime) / 1000).toFixed(2);
 
-    // Clean up input file
     fs.unlinkSync(inputPath);
 
-    // Get output file size
     const stats = fs.statSync(outputPath);
     const fileSizeKB = (stats.size / 1024).toFixed(2);
 
@@ -202,38 +158,35 @@ app.post('/process', upload.single('audio'), async (req, res) => {
 
     res.json({
       success: true,
-      message: `Audio processed successfully with ${EFFECTS[effectType].name}`,
+      message: `Processed with ${EFFECTS[effectType].name}`,
+      downloadUrl: `/download/${outputFilename}`,
+      filename: outputFilename,
       effect: {
         id: effectType,
-        name: EFFECTS[effectType].name,
-        description: EFFECTS[effectType].description
+        name: EFFECTS[effectType].name
       },
       output: {
-        filename: outputFilename,
-        size_kb: fileSizeKB,
-        download_url: `/download/${outputFilename}`
+        size_kb: fileSizeKB
       },
       processing_time_seconds: processingTime
     });
 
   } catch (error) {
-    console.error('❌ Processing error:', error);
+    console.error('❌ Error:', error);
     
-    // Clean up on error
     if (req.file && fs.existsSync(req.file.path)) {
       fs.unlinkSync(req.file.path);
     }
 
     res.status(500).json({
       success: false,
-      error: 'Failed to process audio',
-      details: error.message,
-      hint: 'Check if FFmpeg is installed and the audio file is valid'
+      error: 'Processing failed',
+      details: error.message
     });
   }
 });
 
-// 📥 Download Processed Audio
+// 📥 Download
 app.get('/download/:filename', (req, res) => {
   const filename = req.params.filename;
   const filePath = path.join(outputsDir, filename);
@@ -241,8 +194,7 @@ app.get('/download/:filename', (req, res) => {
   if (!fs.existsSync(filePath)) {
     return res.status(404).json({ 
       success: false,
-      error: 'File not found',
-      hint: 'File may have been auto-deleted after 10 seconds'
+      error: 'File not found'
     });
   }
 
@@ -250,11 +202,10 @@ app.get('/download/:filename', (req, res) => {
 
   res.download(filePath, filename, (err) => {
     if (!err) {
-      // Auto-delete after 10 seconds
       setTimeout(() => {
         if (fs.existsSync(filePath)) {
           fs.unlinkSync(filePath);
-          console.log(`🗑️ Cleaned up: ${filename}`);
+          console.log(`🗑️ Cleaned: ${filename}`);
         }
       }, 10000);
     }
@@ -263,11 +214,11 @@ app.get('/download/:filename', (req, res) => {
 
 // 🚀 Start Server
 app.listen(PORT, '0.0.0.0', () => {
-  console.log('═══════════════════════════════════════════════════════');
-  console.log('🚀 LoFi Remix API - Professional Edition v2.0');
-  console.log('═══════════════════════════════════════════════════════');
+  console.log('═══════════════════════════════════════');
+  console.log('🚀 LoFi Remix API v2.0 - OPTIMIZED');
+  console.log('═══════════════════════════════════════');
   console.log(`📍 Server: http://0.0.0.0:${PORT}`);
-  console.log(`🎵 Effects: ${Object.keys(EFFECTS).length} professional presets`);
-  console.log(`✅ Status: READY`);
-  console.log('═══════════════════════════════════════════════════════');
+  console.log(`⚡ Performance: Fast processing enabled`);
+  console.log(`🎵 Effects: ${Object.keys(EFFECTS).length}`);
+  console.log('═══════════════════════════════════════');
 });