misc python

alexandergriffing_spite.py

@@ -0,0 +1,47 @@
+from decimal import Decimal
+import itertools
+
+def sum_series(series):
+    x = Decimal(0)
+    i = 0
+    t = 0
+    l = 0
+    # ethical
+    for value in series:
+        last_x = x
+        x += value
+        if x == last_x:
+            l += 1
+        else:
+            t = i
+            l = 0
+        if l > (i // 2 + 2): return x
+        i += 1
+
+def power_series(x, coefs):
+    def f():
+        a = Decimal(1)
+        for coef in coefs:
+            yield a * coef
+            a *= x
+    return sum_series(f())
+
+def derivative(power_series):
+    next(power_series)
+    for value, i in zip(power_series, itertools.count(1)):
+        yield i * value
+
+def cos():
+    for i in itertools.count(0):
+        yield Decimal(-1)**i / Decimal(math.factorial(i * 2))
+        yield 0
+
+def newton(func, x0):
+    x = x0
+    while True:
+        fx, fprimex = power_series(x, func()), power_series(x, derivative(func()))
+        x = x - fx / fprimex
+        yield x
+
+for half_pi in newton(cos, 1):
+    print(half_pi * 2)

lesswrong_to_tiktok.py

@@ -0,0 +1,93 @@
+import wave, sys
+import nltk
+from balacoon_tts import TTS
+from collections import namedtuple
+import struct
+from PIL import Image, ImageDraw
+import cv2
+import numpy
+import subprocess
+
+WIDTH = 400
+
+AUDIO = "/tmp/x.wav"
+VIDEO = "/tmp/x.avi"
+BACKDROP = "/tmp/x.mkv"
+OUTPUT = "/tmp/x.mp4"
+
+def render_text(text: str):
+    render_params = {"font_size": 24}
+    im  = Image.new("RGBA", (WIDTH, WIDTH))
+    draw = ImageDraw.Draw(im)
+    loc = [0, 0]
+    toks = text.split()
+    toks.reverse()
+    text_commands = []
+    while toks:
+        chunk = []
+        while draw.textbbox(loc, " ".join(chunk), **render_params)[2] < WIDTH:
+            if not toks: break
+            chunk.append(toks.pop())
+        else: toks.append(chunk.pop())
+        bbox = draw.textbbox(loc, " ".join(chunk), **render_params)
+        text_commands.append((tuple(loc), " ".join(chunk)))
+        loc[1] = bbox[3]
+    draw.rectangle([0, 0, WIDTH, loc[1]], fill="white")
+    for loc, text in text_commands:
+        draw.text(loc, text, fill="black", **render_params)
+    return im
+
+Pause = namedtuple("Pause", ["length"])
+
+text = open("/home/osmarks/Downloads/seq1.txt").read()
+
+tts = TTS("/home/osmarks/Downloads/en_us_hifi_jets_cpu.addon")
+#supported_speakers = tts.get_speakers()
+speaker = "6670"
+
+def chunks(text: str) -> list[str | Pause]:
+    out = []
+    for line in text.splitlines():
+        if line:
+            for sent in nltk.sent_tokenize(line):
+                out.append(sent)
+                out.append(Pause(0.5))
+            out.append(Pause(1))
+    return out
+
+RATE = tts.get_sampling_rate()
+FPS = 30
+
+def wavblank(seconds):
+    return struct.pack(">h", 0) * round(seconds * RATE / 2)
+
+blank_frame = render_text("")
+
+fourcc = cv2.VideoWriter_fourcc(*"MJPG")
+video_writer = cv2.VideoWriter(VIDEO, fourcc, FPS, (WIDTH, WIDTH))
+total_dur = 0
+with wave.open(AUDIO, "w") as fp:
+    fp.setparams((1, 2, RATE, 0, "NONE", "NONE"))
+    for chunk in chunks(text):
+        if isinstance(chunk, str):
+            samples = tts.synthesize(chunk, speaker)
+            image = render_text(chunk)
+        elif isinstance(chunk, Pause):
+            samples = wavblank(chunk.length)
+            image = blank_frame
+        fp.writeframes(samples)
+        duration = len(samples) / RATE # what
+        total_dur += duration
+        frame = cv2.cvtColor(numpy.array(image), cv2.COLOR_RGBA2BGR)
+        for _ in range(round(duration * FPS)): video_writer.write(frame)
+        print(chunk, duration)
+video_writer.release()
+subprocess.run([
+    "ffmpeg",
+    "-i", BACKDROP, "-i", AUDIO, "-i", VIDEO,
+    "-filter_complex", "overlay=x=200:y=200,format=nv12,hwupload",
+    "-to", str(total_dur),
+    "-y",
+    "-vaapi_device", "/dev/dri/renderD128", "-c:v", "h264_vaapi",
+    OUTPUT
+]).check_returncode()

memeticize.py

@@ -1,6 +1,6 @@
 import os, sys, subprocess, datetime
 
-dt_threshold = datetime.datetime(2022, 11, 27).timestamp()
+dt_threshold = datetime.datetime(2023, 6, 16).timestamp()
 
 _, indir, outdir = sys.argv
 for x in os.listdir(indir):
@@ -19,4 +19,4 @@ for x in os.listdir(indir):
                         os.rename(inpath, newpath)
                         break
             else:
-                print("keeping")
+                print("keeping")

rotating_audio.py

@@ -0,0 +1,52 @@
+import pathlib
+import numpy as np
+import wave
+import math
+import tempfile
+import subprocess
+import contextlib
+
+cyc = 2
+nsamples = 48000 * 60
+path = pathlib.Path("~/Downloads/inputs").expanduser()
+
+inputs = []
+tempfiles = []
+with contextlib.ExitStack() as stack:
+    for file in path.glob("*"):
+        mgr = tempfile.NamedTemporaryFile("w")
+        stack.enter_context(mgr)
+        tempfiles.append(mgr)
+        subprocess.run(["ffmpeg", "-i", file, "-ar", "48000", "-ac", "1", "-filter:a", "dynaudnorm=p=1.0:s=5:g=15", "-y", "-f", "wav", mgr.name])
+
+    for t in tempfiles:
+        with wave.open(str(t.name), "r") as w:
+            assert w.getsampwidth() == 2 and w.getnchannels() == 1 and w.getframerate() == 48000
+            inputs.append(np.frombuffer(w.readframes(nsamples), np.dtype(np.int16).newbyteorder("<")).astype(float) / 32768)
+
+inputs = np.array(inputs) * (1/len(inputs)) # wrong but close enough
+offsets = np.broadcast_to(np.linspace(0, math.pi * 2, num=len(inputs) + 1)[:len(inputs)], (nsamples, len(inputs))).transpose()
+phase = np.broadcast_to(np.linspace(0, math.pi * 2 * cyc, num=nsamples), (len(inputs), nsamples)) + offsets
+empty = np.zeros_like(phase)
+x = np.cos(phase)
+y = np.sin(phase)
+
+def writeaudio(file, array):
+    wr = wave.open(file, "w")
+    wr.setnchannels(1)
+    wr.setsampwidth(2)
+    wr.setframerate(48000)
+    wr.writeframes((array * 32768).astype("<i2").tobytes())
+    wr.close()
+
+with tempfile.NamedTemporaryFile("wb") as left:
+    with tempfile.NamedTemporaryFile("wb") as front:
+        with tempfile.NamedTemporaryFile("wb") as right:
+            with tempfile.NamedTemporaryFile("wb") as back:
+                writeaudio(left, sum(np.where(-x > 0, -x, empty) * inputs))
+                writeaudio(right, sum(np.where(x > 0, x, empty) * inputs))
+                writeaudio(front, sum(np.where(y > 0, y, empty) * inputs))
+                writeaudio(back, sum(np.where(-y > 0, -y, empty) * inputs))
+                print(front.name)
+                # layout is technically front left + front right + back left + back right - ignore
+                subprocess.run(["ffmpeg", "-i", front.name, "-i", right.name, "-i", back.name, "-i", left.name, "-filter_complex", "[0:a][1:a]join=inputs=4:channel_layout=quad[a]", "-map", "[a]", "/tmp/out.opus"]).check_returncode()