Add frame_store module (#1194)

* add frame_store module

* rename and change tests

* rename and update tests

tests/test_frame_store.py

@@ -0,0 +1,70 @@
+import pytest
+
+from facefusion import process_manager
+from facefusion.download import conditional_download
+from facefusion.frame_store import clear_frames, get_frame_store, reduce_frames, select_frame_set, set_frame
+from facefusion.vision import read_video_frame
+from .helper import get_test_example_file, get_test_examples_directory
+
+
+@pytest.fixture(scope = 'module', autouse = True)
+def before_all() -> None:
+	process_manager.start()
+	conditional_download(get_test_examples_directory(),
+	[
+		'https://github.com/facefusion/facefusion-assets/releases/download/examples-3.0.0/target-240p.mp4'
+	])
+
+
+@pytest.fixture(scope = 'function', autouse = True)
+def before_each() -> None:
+	clear_frames()
+
+
+def test_get_frame_store() -> None:
+	frame_store = get_frame_store('reader-1')
+
+	assert frame_store == {}
+	assert get_frame_store('reader-1') is frame_store
+
+
+def test_set_frame() -> None:
+	target_frame = read_video_frame(get_test_example_file('target-240p.mp4'), 0)
+
+	set_frame('reader-1', 5, target_frame)
+
+	assert get_frame_store('reader-1').get(5) is target_frame
+
+
+def test_select_frame_set() -> None:
+	first_frame = read_video_frame(get_test_example_file('target-240p.mp4'), 0)
+	fifth_frame = read_video_frame(get_test_example_file('target-240p.mp4'), 5)
+
+	set_frame('reader-1', 2, first_frame)
+	set_frame('reader-1', 5, fifth_frame)
+
+	assert sorted(select_frame_set('reader-1', 0, 4)) == [ 2 ]
+	assert select_frame_set('reader-1', 0, 4).get(2) is first_frame
+	assert sorted(select_frame_set('reader-1', 2, 6)) == [ 2, 5 ]
+	assert select_frame_set('reader-1', 2, 6).get(5) is fifth_frame
+	assert select_frame_set('reader-1', 8, 12) == {}
+
+
+def test_reduce_frames() -> None:
+	target_frame = read_video_frame(get_test_example_file('target-240p.mp4'), 0)
+
+	for frame_number in range(0, 10):
+		set_frame('reader-1', frame_number, target_frame)
+
+	reduce_frames('reader-1', 4, 6)
+
+	assert sorted(get_frame_store('reader-1')) == [ 4, 5, 6 ]
+
+
+def test_clear_frames() -> None:
+	target_frame = read_video_frame(get_test_example_file('target-240p.mp4'), 0)
+
+	set_frame('reader-1', 0, target_frame)
+	clear_frames()
+
+	assert get_frame_store('reader-1') == {}