Don't add extra samples to output when fade is enabled

README.md

@@ -6,3 +6,4 @@ Funscript To E-Stim Audio Converter (fork of edger477 version with mods)
 - Add metadata to generated mp3 to see the settings that were used
 - Ability to create multiple output files with stroke timing between minimum and maximum values
 - Ability to create an output file with customized stroke timing
+- Adjusted fade in/out so it won't add extra samples to the output, it will only fade the existing samples already present

funstim.js

@@ -57,7 +57,8 @@ onmessage = e => {
     let samplesPerMs = e.sampleRate / 1000;
     let normalSamples = length * samplesPerMs;
     let fadeSamples = e.fade * samplesPerMs;
-    let totalSamples = normalSamples + fadeSamples * 2;
+    //let totalSamples = normalSamples + fadeSamples * 2;
+    let totalSamples = normalSamples;						// fade won't "add" samples to output anymore.  Output length will match funscript end length
     let sample = 0;
     let actionIndex = 0;
 
@@ -110,10 +111,11 @@ onmessage = e => {
                 amp = 1;
             }
 
+            // fade at beginning and end of file (if selected).
             if (sample < fadeSamples) {
                 amp = Math.min(amp, sample / fadeSamples);
-            } else if (sample >= normalSamples) {
-                amp = Math.max(0, Math.min(amp, 1 - (sample - normalSamples) / fadeSamples));
+            } else if (sample >= (normalSamples - fadeSamples)) {
+                amp = Math.max(0, Math.min(amp, (normalSamples - sample) / fadeSamples));
             }
 
             let filterLength = (e.sampleRate * e.fade) / 1000;