Depending on python version and hardware the DEFAULT_BUFFER_SIZE which

we use to ingest/feed in fingerprinting can influence the generated
fingerprints.

This fixes the issue by only consuming the expected samples.

Author: semohr

acoustid.py

@@ -222,12 +222,21 @@ def fingerprint(samplerate, channels, pcmiter, maxlength=MAX_AUDIO_LENGTH):
         fper = chromaprint.Fingerprinter()
         fper.start(samplerate, channels)
 
-        position = 0  # Samples of audio fed to the fingerprinter.
-        for block in pcmiter:
-            fper.feed(block)
-            position += len(block) // 2  # 2 bytes/sample.
-            if position >= endposition:
+        position = 0
+        while position < endposition:
+            try:
+                block = next(pcmiter)
+            except StopIteration:
+                # No more data
                 break
+                
+            # Calculate remaining samples needed
+            remaining = endposition - position
+            # Feed only up to remaining samples
+            bytes_to_feed = min(len(block), remaining * 2)
+            fper.feed(block[:bytes_to_feed])
+            position += bytes_to_feed // 2
+        
 
         return fper.finish()
     except chromaprint.FingerprintError: