//! List a sound bank's streams and their declared rates.
//!
//!     cargo run -p sylpheed-formats --example bank_streams -- <disc> BGM_102.slb …
use sylpheed_formats::media::{self, DirectorySource};
use sylpheed_formats::{hash::name_hash, slb};

fn main() {
    let mut a = std::env::args().skip(1);
    let disc = a.next().expect("usage: bank_streams <disc> NAME.slb…");
    let src = DirectorySource::new(std::path::PathBuf::from(&disc));
    for name in a {
        let h = name_hash(&name);
        match media::read_sound_bank(&src, h) {
            Ok(bytes) => {
                let riffs = slb::to_xma_riffs(&bytes);
                println!(
                    "{name}  (hash {h:08x}, {} B on disc)  header {:?}  -> {} stream(s)",
                    bytes.len(),
                    slb::bank_header_len(&bytes),
                    riffs.len()
                );
                for (i, r) in riffs.iter().enumerate() {
                    let rate = if r.len() >= 0x28 {
                        u32::from_le_bytes(r[0x20..0x24].try_into().unwrap())
                    } else {
                        0
                    };
                    let payload = r.len() - 60;
                    println!(
                        "   stream {i}: payload {payload} B ({} packets)  declared {rate} B/s  \
=> {:.3} s",
                        payload / 2048,
                        if rate > 0 {
                            payload as f64 / rate as f64
                        } else {
                            0.0
                        }
                    );
                }
            }
            Err(e) => println!("{name}: {e}"),
        }
    }
}