Module mpv_backend

Structs§

NORMALIZE_REF_LUFS 🔒: Reference loudness the peak table is anchored at (Normal preset, −14 LUFS).
NORMALIZE_REF_PEAK 🔒: Reference peak (dynaudnorm p, linear amplitude) for the default VolumeLevel::Normal (−14 LUFS) target, leaving −1.2 dB of headroom.

MPV_HANDLE 🔒: The mpv handle of the backend this process created, for the video surface.

build_af_filter 🔒: Build the full MPV af (audio filter) value from the audio settings.
detect_audio_system 🔒: Detect which audio system is available on the system
eq_filter_entries 🔒: Peaking-EQ filter entries (unwrapped), one ffmpeg equalizer (two-pole peaking) per band with a non-zero gain, e.g. equalizer=f=31:width_type=o:width=1:g=5. Returns an empty vec when the EQ is disabled or every gain is ~0. Gains are assumed already normalised by AudioSettings::with_equalizer_normalised; bands beyond EQ_BANDS are ignored.
get_stream_url 🔒: Helper to get stream URL from MediaItem
normalize_filter_entry 🔒: The loudness-normalization filter entry (unwrapped), or None when normalization is disabled. Uses ffmpeg’s dynaudnorm, a gentle real-time dynamic normalizer that avoids the gain “pumping” loudnorm’s single-pass mode can produce on very dynamic material.
registered_handle: The registered handle, or null if no MPV backend was created (initialisation can fail, and the app falls back to a no-op backend rather than dying).