mirror of
https://github.com/unshackle-dl/unshackle.git
synced 2026-11-12 12:05:07 +00:00
imSp4rky
97711e799c
DASH reads the AudioChannelConfiguration scheme (Dolby mask, CICP index incl. immersive layouts, channel count); HLS and ISM counts map 6/7/8 to 5.1/6.1/7.1.
61 lines
2.4 KiB
Python
61 lines
2.4 KiB
Python
"""Channel values that no float can hold.
|
|
|
|
An immersive layout names its height channels in a third figure, e.g. 5.1.4. A service
|
|
assigning that straight onto a track keeps it out of validation, but a remote download
|
|
sends the track as JSON and rebuilds it through Audio(), which parses the value.
|
|
"""
|
|
|
|
from __future__ import annotations
|
|
|
|
import pytest
|
|
|
|
from unshackle.core.tracks import Audio
|
|
|
|
|
|
@pytest.mark.parametrize("layout", ["5.1.4", "7.1.2", "9.1.6"])
|
|
def test_an_immersive_layout_survives_construction(layout: str) -> None:
|
|
assert Audio(id_="a1", url="https://example.test/a", language="en", channels=layout).channels == layout
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
("value", "expected"),
|
|
[("5.1", 5.1), ("2ch", 2.0), ("2", 2.0), ("2.0", 2.0), ("A000", 2.0), ("F801", 5.1), (6, 6.0)],
|
|
)
|
|
def test_existing_channel_forms_are_unchanged(value: object, expected: float) -> None:
|
|
assert Audio.parse_channels(value) == expected
|
|
|
|
|
|
@pytest.mark.parametrize(("value", "expected"), [("FA01", 7.1), ("f801", 5.1), ("F805", "5.1.2"), ("A000", 2.0)])
|
|
def test_a_dolby_channel_mask_counts_its_channels(value: str, expected: object) -> None:
|
|
assert Audio.parse_channels(value) == expected
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
("count", "expected"),
|
|
[("2", 2.0), ("6", 5.1), ("7", 6.1), ("8", 7.1), (6, 5.1), ("1", 1.0), (None, None), ("2ch", "2ch")],
|
|
)
|
|
def test_a_bare_channel_count_takes_its_usual_layout(count: object, expected: object) -> None:
|
|
"""HLS CHANNELS and Smooth Streaming Channels give a count, which names no LFE."""
|
|
assert Audio.channels_from_count(count) == expected
|
|
|
|
|
|
@pytest.mark.parametrize("value", ["stereo", "5.1.4.2", "", "..", "5.x.4"])
|
|
def test_a_value_that_is_no_layout_still_raises(value: str) -> None:
|
|
with pytest.raises(NotImplementedError):
|
|
Audio.parse_channels(value)
|
|
|
|
|
|
def test_an_immersive_layout_round_trips_as_a_dict() -> None:
|
|
"""A remote download rebuilds every track from the dict the server sent."""
|
|
track = Audio(id_="a1", url="https://example.test/a", language="en", channels="5.1.4", bitrate=448000)
|
|
assert Audio.from_dict(track.to_dict()).channels == "5.1.4"
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
("channels", "total"),
|
|
[("5.1.4", 10.0), ("7.1.2", 10.0), (5.1, 5.1), (6.0, 6.0), ("2.0", 2.0)],
|
|
)
|
|
def test_channel_total_compares_both_forms(channels: object, total: float) -> None:
|
|
"""--channels rounds the sub channel up, so both forms have to reach that arithmetic."""
|
|
assert Audio.channel_total(channels) == total
|