Initial HyperDRM 0.6.0: webOS ambient light app and native service

make_calibration.py

@@ -0,0 +1,15 @@
+"""Spatial calibration: red increases left-to-right, green top-to-bottom."""
+from pathlib import Path
+import subprocess
+ROOT=Path(__file__).resolve().parent
+import imageio_ffmpeg
+w,h=1280,720
+pixels=bytearray()
+for y in range(h):
+    for x in range(w):
+        pixels.extend((round(x*255/(w-1)),round(y*255/(h-1)),32))
+ppm=ROOT/'calibration-gradient.ppm'
+ppm.write_bytes(f'P6\n{w} {h}\n255\n'.encode()+pixels)
+video=ROOT/'calibration-gradient.mp4'
+subprocess.run([imageio_ffmpeg.get_ffmpeg_exe(),'-y','-loop','1','-framerate','1','-i',str(ppm),'-t','300','-c:v','libx264','-pix_fmt','yuv420p','-r','10','-crf','12','-movflags','+faststart',str(video)],check=True,stdout=subprocess.DEVNULL,stderr=subprocess.PIPE)
+print(video)