libxm 1.1.1

A binding of libxm for Rust. A small XM (FastTracker II Extended Module) player library. Designed for easy integration in demos and such, and provides timing functions for easy sync against specific instruments, samples or channels.
Documentation 
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#![allow(nonstandard_style)]

pub use std::ffi::{c_char, c_int, c_float};
pub type size_t = usize;

pub enum xm_context {}
pub type xm_context_t = xm_context;

extern "C" {
    // TODO:
    // xm_seek
    // xm_mute_channel
    // xm_mute_instrument
    // xm_get_sample_waveform
    // xm_is_channel_active
    // xm_get_instrument_of_channel
    // xm_get_frequency_of_channel
    // xm_get_volume_of_channel
    // xm_get_panning_of_channel

    pub fn xm_create_context_safe(context: *mut *mut xm_context_t, moddata: *const c_char, moddata_length: size_t, rate: u32) -> c_int;
    pub fn xm_free_context(context: *mut xm_context_t);
    pub fn xm_generate_samples(context: *mut xm_context_t, output: *mut c_float, numsamples: size_t);
    pub fn xm_set_max_loop_count(context: *mut xm_context_t, loopcnt: u8);
    pub fn xm_get_loop_count(context: *mut xm_context_t) -> u8;
    pub fn xm_get_module_name(context: *mut xm_context_t) -> *const c_char;
    pub fn xm_get_tracker_name(context: *mut xm_context_t) -> *const c_char;
    pub fn xm_get_number_of_channels(context: *mut xm_context_t) -> u16;
    pub fn xm_get_module_length(context: *mut xm_context_t) -> u16;
    pub fn xm_get_number_of_patterns(context: *mut xm_context_t) -> u16;

    pub fn xm_get_number_of_rows(context: *mut xm_context_t, pattern: u16) -> u16;
    pub fn xm_get_number_of_instruments(context: *mut xm_context_t) -> u16;
    pub fn xm_get_number_of_samples(context: *mut xm_context_t, instrument: u16) -> u16;

    pub fn xm_get_playing_speed(context: *mut xm_context_t, bpm: *mut u16, tempo: *mut u16);
    pub fn xm_get_position(context: *mut xm_context_t, pattern_index: *mut u8, pattern: *mut u8, row: *mut u8, samples: *mut u64);
    pub fn xm_get_latest_trigger_of_instrument(context: *mut xm_context_t, instrument: u16) -> u64;
    pub fn xm_get_latest_trigger_of_sample(context: *mut xm_context_t, instr: u16, sample: u16) -> u64;
    pub fn xm_get_latest_trigger_of_channel(context: *mut xm_context_t, channel: u16) -> u64;
}