Platform audio session management for OxiSound.

This crate provides safe wrappers around platform-specific audio session management APIs:

• iOS / macOS: AVAudioSession via objc2-avf-audio (enabled by the avf-audio feature)
• All other platforms: stub implementations that document platform support and return OxiSoundError::UnsupportedConfig where appropriate.

COOLJAPAN Policy

The avf-audio feature introduces Objective-C FFI via objc2, which requires unsafe call sites. This crate therefore does not carry #![forbid(unsafe_code)]. All unsafe blocks are narrowly scoped to objc2 API calls and do not expose unsafe to callers — every public function in this crate has a safe signature.

Default features are 100% Pure Rust (the avf-audio feature is opt-in).

Usage

use oxisound_session::{configure_session, SessionCategory};
configure_session(SessionCategory::Playback).expect("session configure failed");

let granted = oxisound_session::request_microphone_permission()
    .unwrap_or(false);
println!("microphone granted: {granted}");