Initial public source release

Split reusable rendering and format support into vectorail-core and vectorail-gc.

tools/pack_psp_jacket.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+import argparse
+import struct
+import subprocess
+from pathlib import Path
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description="Convert a GC menu DDS jacket to PSP RGBA4444")
+    parser.add_argument("input_dds")
+    parser.add_argument("output_orpj")
+    args = parser.parse_args()
+
+    command = [
+        "ffmpeg", "-hide_banner", "-loglevel", "error", "-i", args.input_dds,
+        "-vf", "crop=197:197:0:0,scale=128:128:flags=lanczos",
+        "-frames:v", "1", "-f", "rawvideo", "-pix_fmt", "rgba", "-",
+    ]
+    result = subprocess.run(command, stdout=subprocess.PIPE, check=False)
+    expected = 128 * 128 * 4
+    if result.returncode != 0 or len(result.stdout) != expected:
+        raise SystemExit(f"ffmpeg produced {len(result.stdout)} bytes, expected {expected}")
+
+    pixels = bytearray(128 * 128 * 2)
+    for index in range(128 * 128):
+        r, g, b, a = result.stdout[index * 4:index * 4 + 4]
+        value = (r >> 4) | ((g >> 4) << 4) | ((b >> 4) << 8) | ((a >> 4) << 12)
+        struct.pack_into("<H", pixels, index * 2, value)
+
+    output = Path(args.output_orpj)
+    output.parent.mkdir(parents=True, exist_ok=True)
+    header = struct.pack("<4sHHHHI", b"ORPJ", 1, 128, 128, 0, len(pixels))
+    output.write_bytes(header + pixels)
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())