pub fn apply_params<P: Params>(params: &P, state: &DeserializedState)Expand description
Apply just the parameter values from a deserialized state - the
host-thread-safe subset of apply_state. Format wrappers call
this from their state-load callback (host main thread) before
pushing the full state onto the audio-thread handoff queue, so
host-thread reads of getParameter/equivalents see the restored
values immediately. Validators (auval, pluginval, the VST2 binary
smoke) read parameters synchronously after setChunk/equivalents
without first running a render block, and would otherwise see the
pre-restore values until the audio thread caught up.
The extra blob still has to round-trip through the audio thread
because crate::plugin::PluginRuntime::load_state takes &mut P, which
would alias process()’s &mut P if called from the host thread.
restore_values and snap_smoothers go through atomic interior
mutability and are safe to call concurrently with process().