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Replace Python media layer with native shims

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glomatico
2026-07-08 13:04:43 -03:00
parent f58fd4b631
commit 89db73c347
3 changed files with 28 additions and 3296 deletions
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gamdl/downloader/__init__.py
+1 -1
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@@ -1,4 +1,4 @@
from .amdecrypt import decrypt_file_hex, decrypt_wrapper, write_decrypted_media
from .amdecrypt import decrypt_and_mux_hex, decrypt_and_mux_wrapper
from .base import AppleMusicBaseDownloader
from .downloader import AppleMusicDownloader
from .enums import *
gamdl/downloader/amdecrypt.py
+3 -3276
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File diff suppressed because it is too large Load Diff
tests/test_native_muxer.py
+24 -19
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@@ -1,14 +1,9 @@
import struct
from types import SimpleNamespace
import pytest
from gamdl.downloader.amdecrypt import (
SampleInfo,
SongInfo,
mux_decrypted_mp4_tracks,
write_decrypted_m4a,
write_decrypted_mp4_track,
)
from gamdl import _amdecrypt
def _top_box(data: bytes, box_type: bytes) -> bytes:
@@ -32,15 +27,17 @@ def _mdat_payload(path) -> bytes:
def test_native_m4a_writer_creates_flat_mp4(tmp_path):
output = tmp_path / "song.m4a"
payload = b"aaaabbbbcccc"
track = SongInfo(
track = SimpleNamespace(
samples=[
SampleInfo(data=b"", duration=1024, desc_index=0, size=4),
SampleInfo(data=b"", duration=1024, desc_index=0, size=8),
SimpleNamespace(duration=1024, desc_index=0, size=4, composition_time_offset=0, is_sync=True),
SimpleNamespace(duration=1024, desc_index=0, size=8, composition_time_offset=0, is_sync=True),
],
moov_data=b"",
ftyp_data=b"",
handler_type=b"soun",
)
write_decrypted_m4a(str(output), track, payload)
_amdecrypt.write_decrypted_m4a_native(str(output), track, payload)
data = output.read_bytes()
assert _top_box(data, b"ftyp")[8:12] == b"M4A "
@@ -55,18 +52,26 @@ def test_native_mp4_track_mux_preserves_payload_order(tmp_path):
video_payload = b"vvvvvvvv"
audio_payload = b"aaaa"
video = SongInfo(
samples=[SampleInfo(data=b"", duration=3000, desc_index=0, size=8)],
video = SimpleNamespace(
samples=[
SimpleNamespace(duration=3000, desc_index=0, size=8, composition_time_offset=0, is_sync=True)
],
moov_data=b"",
ftyp_data=b"",
handler_type=b"vide",
)
audio = SongInfo(
samples=[SampleInfo(data=b"", duration=1024, desc_index=0, size=4)],
audio = SimpleNamespace(
samples=[
SimpleNamespace(duration=1024, desc_index=0, size=4, composition_time_offset=0, is_sync=True)
],
moov_data=b"",
ftyp_data=b"",
handler_type=b"soun",
)
write_decrypted_mp4_track(str(video_path), video, video_payload)
write_decrypted_mp4_track(str(audio_path), audio, audio_payload)
mux_decrypted_mp4_tracks(str(video_path), str(audio_path), str(output))
_amdecrypt.write_decrypted_mp4_track_native(str(video_path), video, video_payload)
_amdecrypt.write_decrypted_mp4_track_native(str(audio_path), audio, audio_payload)
_amdecrypt.mux_decrypted_mp4_tracks_native(str(video_path), str(audio_path), str(output))
data = output.read_bytes()
assert _top_box(data, b"ftyp")[8:12] == b"mp42"
@@ -82,4 +87,4 @@ def test_native_mp4_track_mux_rejects_missing_mdat(tmp_path):
audio_path.write_bytes(struct.pack(">I4s", 8, b"moov"))
with pytest.raises(OSError, match="missing mdat"):
mux_decrypted_mp4_tracks(str(video_path), str(audio_path), str(output))
_amdecrypt.mux_decrypted_mp4_tracks_native(str(video_path), str(audio_path), str(output))