MySpotilol 0.7.0

Test release for a real crossfade.

Changed

• Crossfade now overlaps: the end of a song fades out while the next one already plays and fades in, as in Spotify's apps. The Web Player has only one player, so the app builds a reserve while a song plays: Spotify plays it 3–12 % faster, the app's audio path slows it back down (tempo and pitch unchanged), and the song's last seconds wait in the reserve until the next one starts.
• What is heard lags Spotify by up to the crossfade length; the position, the slider and the lyrics follow what is heard. Pause and play act at once.
• Skips and seeks change at once, without a crossfade. After a jump close to the end of a song, the reserve may not reach the full length.
• Crossfade uses the same audio path as the volume boost; if no sound comes through it on a phone, both stay off until the app restarts.

Diagnostics

• page xfade: … lines: build (speed and target per song), overlap (seconds crossfaded), flush (reserve dropped by a skip or seek), unsupported (why a song is not crossfaded).

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Commit 711f960 · package com.project.lol.fork.ui, installs next to Spotilol Lite.
Pre-release: Spotilol Lite does not offer it as an update. Checked automatically (tests, signed build); device testing is separate. Checksums in SHA256SUMS.txt.