208 lines
7.6 KiB
Python
208 lines
7.6 KiB
Python
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from __future__ import annotations
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import importlib.util
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import json
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import sys
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import tempfile
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import unittest
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from pathlib import Path
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from PIL import Image
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SCRIPT_DIR = Path(__file__).resolve().parents[1] / "scripts"
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sys.path.insert(0, str(SCRIPT_DIR))
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SPEC = importlib.util.spec_from_file_location(
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"compile_scroll_video",
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SCRIPT_DIR / "compile_scroll_video.py",
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)
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assert SPEC and SPEC.loader
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COMPILE = importlib.util.module_from_spec(SPEC)
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sys.modules[SPEC.name] = COMPILE
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SPEC.loader.exec_module(COMPILE)
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from chroma_key import analyze_frame, default_parameters, key_image
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class ChromaVideoCompileTests(unittest.TestCase):
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def test_compiler_requires_explicit_background_owner(self) -> None:
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with self.assertRaises(SystemExit):
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COMPILE.parser().parse_args(
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["source.mp4", "build", "--budget-report", "budget.json"]
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)
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def test_compiler_requires_frame_policy_and_timeline_output(self) -> None:
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with self.assertRaises(SystemExit):
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COMPILE.parser().parse_args(
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[
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"source.mp4",
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"build",
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"--background-owner",
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"video",
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"--budget-report",
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"budget.json",
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]
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)
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def test_timeline_keeps_hold_separate_from_exclusive_end(self) -> None:
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specs = COMPILE.parse_segment_specs(
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["first=0:2:3", "second=3:5:6"]
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)
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timeline = COMPILE.build_timeline(
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specs,
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[0, 1, 2, 4, 5, 6],
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7,
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24,
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{"type": "constant", "rate": 1.0},
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)
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first = timeline["segments"][0]
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self.assertEqual(timeline["initialState"], "state-0")
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self.assertEqual(
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[state["id"] for state in timeline["states"]],
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["state-0", "first", "second"],
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)
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self.assertEqual(first["from"], "state-0")
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self.assertEqual(first["to"], "first")
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self.assertEqual(first["frames"]["hold"], 2)
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self.assertEqual(first["frames"]["endExclusive"], 3)
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self.assertLess(first["hold"], first["endExclusive"])
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def test_representative_frames_include_both_ends(self) -> None:
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paths = [Path(f"frame_{index:05d}.png") for index in range(100)]
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sampled = COMPILE.representative_frames(paths)
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self.assertEqual(len(sampled), 48)
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self.assertEqual(sampled[0], paths[0])
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self.assertEqual(sampled[-1], paths[-1])
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def test_representative_indices_include_both_ends(self) -> None:
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sampled = COMPILE.representative_indices(323)
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self.assertEqual(len(sampled), 48)
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self.assertEqual(sampled[0], 0)
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self.assertEqual(sampled[-1], 322)
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def test_uniform_green_frames_pass_key_validation(self) -> None:
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with tempfile.TemporaryDirectory() as directory:
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paths: list[Path] = []
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for index in range(3):
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path = Path(directory) / f"frame_{index:05d}.png"
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image = Image.new("RGB", (32, 32), (0, 255, 0))
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image.paste((255, 0, 0), (8, 8, 24, 24))
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image.save(path)
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paths.append(path)
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result = COMPILE.validate_key_source(paths, (0, 255, 0))
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self.assertEqual(result["kind"], "green")
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self.assertEqual(result["borderSpreadP95Max"], 0)
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def test_non_chroma_background_is_rejected(self) -> None:
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with tempfile.TemporaryDirectory() as directory:
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path = Path(directory) / "frame.png"
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Image.new("RGB", (32, 32), (255, 255, 255)).save(path)
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with self.assertRaisesRegex(ValueError, "绿色或洋红色键背景"):
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COMPILE.validate_key_source([path], (255, 255, 255))
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def test_dark_green_region_and_green_edge_are_removed(self) -> None:
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with tempfile.TemporaryDirectory() as directory:
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source = Path(directory) / "source.png"
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output = Path(directory) / "output.png"
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image = Image.new("RGB", (64, 64), (0, 235, 10))
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image.paste((18, 82, 24), (8, 8, 56, 56))
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image.paste((220, 40, 30), (24, 24, 40, 40))
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image.save(source)
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parameters = default_parameters((0, 235, 10))
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key_image(source, output, parameters)
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with Image.open(output) as result:
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alpha = result.getchannel("A")
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self.assertLessEqual(alpha.getpixel((12, 12)), 2)
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self.assertGreaterEqual(alpha.getpixel((32, 32)), 250)
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metrics = analyze_frame(source, parameters)
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self.assertLessEqual(metrics["keyLikeAlphaP99"], 0.01)
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def test_magenta_key_mode_removes_magenta_background(self) -> None:
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with tempfile.TemporaryDirectory() as directory:
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source = Path(directory) / "source.png"
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output = Path(directory) / "output.png"
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image = Image.new("RGB", (32, 32), (240, 0, 235))
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image.paste((30, 180, 220), (8, 8, 24, 24))
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image.save(source)
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parameters = default_parameters((240, 0, 235))
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key_image(source, output, parameters)
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self.assertEqual(parameters.mode, "magenta")
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with Image.open(output) as result:
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alpha = result.getchannel("A")
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self.assertLessEqual(alpha.getpixel((2, 2)), 2)
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self.assertGreaterEqual(alpha.getpixel((16, 16)), 250)
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def test_source_anchor_maps_to_nearest_retained_frame(self) -> None:
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kept = [0, 1, 4, 9, 20, 48, 90, 248, 251]
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self.assertEqual(COMPILE.map_source_frame(248, kept), 7)
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self.assertEqual(COMPILE.map_source_frame(47, kept), 5)
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def test_anchor_parser_rejects_duplicates(self) -> None:
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with self.assertRaisesRegex(ValueError, "重复"):
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COMPILE.parse_anchors(["center=20", "center=21"])
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def test_runtime_shader_implements_manifest_contract(self) -> None:
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shader = (
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SCRIPT_DIR.parent / "assets" / "chroma-video-renderer.ts"
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).read_text(encoding="utf-8")
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for token in (
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'algorithm: "dominance-v2"',
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"uDominanceStart",
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"uDominanceEnd",
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"uSpillStart",
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"uSpillEnd",
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"keying.keyColor",
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):
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self.assertIn(token, shader)
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def test_video_compiler_rejects_atlas_budget_report(self) -> None:
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with tempfile.TemporaryDirectory() as directory:
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path = Path(directory) / "budget.json"
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path.write_text(
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json.dumps(
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{
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"passes": True,
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"delivery": {"selected": "alpha-atlas"},
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}
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),
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encoding="utf-8",
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)
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with self.assertRaisesRegex(ValueError, "没有选择 chroma-video"):
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COMPILE.load_budget_report(path)
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def test_baked_compiler_accepts_baked_budget_report(self) -> None:
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with tempfile.TemporaryDirectory() as directory:
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path = Path(directory) / "budget.json"
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path.write_text(
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json.dumps(
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{
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"passes": True,
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"delivery": {"selected": "baked-video"},
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}
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),
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encoding="utf-8",
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)
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report = COMPILE.load_budget_report(path, "baked-video")
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self.assertEqual(report["delivery"]["selected"], "baked-video")
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with self.assertRaisesRegex(ValueError, "没有选择 chroma-video"):
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COMPILE.load_budget_report(path)
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if __name__ == "__main__":
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unittest.main()
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