revert app.py

app.py

@@ -15,36 +15,9 @@ import subprocess
 import traceback
 import time
 import shutil
-import numpy as np
 
 path = ""  # Update with your path
 
-# Cross-correlation function
-def cross_correlation(x, y):
-    """
-    Compute the cross-correlation of two signals.
-    """
-    n = len(x)
-    correlation = np.correlate(x - np.mean(x), y - np.mean(y), mode='valid') / (n * np.std(x) * np.std(y))
-    return correlation
-
-# Modified getTrigger function using cross-correlation
-def getTrigger(ad, a, ref_length=100, max=1024):
-    """
-    Find the trigger point in the audio signal using waveform correlation.
-    """
-    ref_signal = a[ad:ad + ref_length]  # Reference signal segment
-
-    max_corr = 0
-    best_idx = ad
-    for i in range(ad, ad+ref_length+max):
-        #print(f"{i}, \t{ad},\t {len(a) - ref_length}")
-        corr = cross_correlation(ref_signal, a[i:i + ref_length])
-        if corr > max_corr:
-            max_corr = corr
-            best_idx = i
-
-    return best_idx
 
 def getRenderCords(ta: list, idx: int, res: int = 1024, size: tuple = (1280, 720)) -> list:
     i = idx - res // 2
@@ -66,6 +39,11 @@ def center_to_top_left(coords, width=1280, height=720):
 def totopleft(coord, width=1280, height=720):
     return coord[0] + width / 2, height / 2 - coord[1]
 
+def getTrigger(ad: int, a: list, max: int = 1024) -> int:
+    i = ad
+    while not (a[i] < 128 and not a[i + 2] < 128 or i - ad > max):
+        i += 1
+    return i
 
 def extract_cover_image(mp3_file):
     audio = MP3(mp3_file, ID3=ID3)