Fix wavetable script, include from header

- Fix an error in the wav_to_wavetable script where it accidentally
  acted as a wavefolder (use `signed=False` and subtract 511 from the
  resampled result to get that behavior back – the sounds were nice)
- Include the resulting wavetable from the header file, to avoid copy
  paste mistakes

scripts/wav_to_wavetable.py

@@ -59,13 +59,17 @@ path = args.input
 w = wave.open(path, "rb")
 channels = w.getnchannels()
 samplewidth = w.getsampwidth()
-print(f"Audio has {channels} channels and each sample is {samplewidth} bytes wide")
+print(
+    f"Audio has {channels} channels and each sample is {samplewidth} bytes wide ({samplewidth * 8} bit audio)"
+)
 
 resampled = []
 
 
-def resample(sample: int) -> int:
-    return min(1023, int(sample / 2**14)) - 511
+def resample(sample: int, bits=24) -> int:
+    limit = 2**10
+    steps = 2 ** (bits - 10)
+    return max(-limit, min(limit, int(sample / steps)))
 
 
 for n in range(w.getnframes()):
@@ -73,7 +77,9 @@ for n in range(w.getnframes()):
     if frame != b"":
         # Convert the frame into a list of integers, assuming little endian encoding
         frame_data = [
-            int.from_bytes(frame[i : i + samplewidth], "little")
+            int.from_bytes(
+                frame[i : i + samplewidth], byteorder=sys.byteorder, signed=True
+            )
             for i in range(0, len(frame), samplewidth)
         ]
         # If we have more than one channel the samples of each channel
@@ -83,7 +89,7 @@ for n in range(w.getnframes()):
             for sample in frame_data:
                 # print(sample)
                 # 24 bit - 14 bit = 10 bit
-                resampled.append(resample(sample))
+                resampled.append(resample(sample, samplewidth * 8))
         elif channels == 2:
             # Iterate in steps of 2 over the frames and deinterleave
             # them into the samples for left and right
@@ -96,7 +102,7 @@ for n in range(w.getnframes()):
                 f"{bcolors.FAIL}Error:{bcolors.ENDC} Sorry, we do not support wave files with {channels} channels.. yet",
                 file=sys.stderr,
             )
-            exit()
+            exit(1)
 
 print(f"Resampled {len(resampled)} samples")
 # shrink_to = 48000*2