324 lines
11 KiB
Rust
324 lines
11 KiB
Rust
use std::error::Error;
|
|
use std::ffi::CStr;
|
|
use std::path::Path;
|
|
use std::time::{Duration, Instant};
|
|
|
|
use crate::prelude::*;
|
|
use crate::components::ControlFlow;
|
|
|
|
use sdl2::audio::{AudioCallback, AudioFormat, AudioSpec, AudioSpecDesired, AudioDevice};
|
|
use sdl2::controller::{GameController, Button, Axis};
|
|
use sdl2::event::Event;
|
|
use sdl2::keyboard::Keycode;
|
|
use sdl2::rect::Rect;
|
|
use sdl2::render::WindowCanvas;
|
|
|
|
// TODO: split up between video/audio/input!
|
|
pub struct Sdl2Component {
|
|
preferred_pad: Option<u32>,
|
|
|
|
av_info: SystemAvInfo,
|
|
|
|
_sdl_context: sdl2::Sdl,
|
|
|
|
// video bits
|
|
canvas: WindowCanvas,
|
|
pixel_format: sdl2::pixels::PixelFormatEnum,
|
|
|
|
// audio bits
|
|
audio_buffer: Vec<i16>,
|
|
audio_spec: AudioSpec,
|
|
audio_device: AudioDevice<MySdlAudio>,
|
|
audio_sender: crossbeam_channel::Sender<Vec<i16>>,
|
|
|
|
// input bits
|
|
gamepad_subsys: sdl2::GameControllerSubsystem,
|
|
gamepads: Vec<GameController>,
|
|
|
|
// timing and events
|
|
frame_begin: Instant,
|
|
event_pump: sdl2::EventPump,
|
|
}
|
|
|
|
impl RetroComponent for Sdl2Component {
|
|
fn pre_run(&mut self, _retro: &mut LibretroWrapper) -> ControlFlow {
|
|
self.frame_begin = Instant::now();
|
|
|
|
for event in self.event_pump.poll_iter() {
|
|
match event {
|
|
Event::Quit { .. }
|
|
| Event::KeyDown {
|
|
keycode: Some(Keycode::Escape),
|
|
..
|
|
} => return ControlFlow::Break,
|
|
_ => {}
|
|
}
|
|
}
|
|
|
|
ControlFlow::Continue
|
|
}
|
|
|
|
fn post_run(&mut self, _retro: &mut LibretroWrapper) -> ControlFlow {
|
|
// The rest of the game loop goes here...
|
|
self.canvas.present();
|
|
|
|
// similar hack to the sample rate, make sure we don't divide by zero.
|
|
let mut spf = 1.0 / self.av_info.timing.fps;
|
|
if spf.is_nan() || spf.is_infinite() {
|
|
spf = 1.0 / 60.0;
|
|
}
|
|
Duration::from_secs_f64(spf)
|
|
.checked_sub(self.frame_begin.elapsed())
|
|
.map(std::thread::sleep);
|
|
|
|
|
|
ControlFlow::Continue
|
|
}
|
|
|
|
fn post_load_game(&mut self, retro: &mut LibretroWrapper, _rom: &Path) -> Result<(), Box<dyn Error>> {
|
|
if let Some(device) = self.preferred_pad {
|
|
for port in 0..self.gamepads.len() as u32 {
|
|
retro.set_controller_port_device(port, device);
|
|
}
|
|
}
|
|
self.audio_device.resume();
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl Sdl2Component {
|
|
pub fn new(retro: &LibretroWrapper) -> Self {
|
|
let sys_info = retro.get_system_info();
|
|
let title = format!(
|
|
"{} - ferretro",
|
|
unsafe { CStr::from_ptr(sys_info.library_name) }.to_string_lossy()
|
|
);
|
|
|
|
let mut av_info = retro.get_system_av_info();
|
|
let pixel_format = sdl2::pixels::PixelFormatEnum::ARGB1555;
|
|
|
|
// HACK: some cores don't report this 'til we get an environ call to set_system_av_info...
|
|
// which is too late for this constructor to pass along to SDL.
|
|
if av_info.timing.sample_rate == 0.0 {
|
|
av_info.timing.sample_rate = 32040.0;
|
|
}
|
|
|
|
let sdl_context = sdl2::init().unwrap();
|
|
|
|
let window = sdl_context
|
|
.video()
|
|
.unwrap()
|
|
.window(title.as_str(), av_info.geometry.base_width, av_info.geometry.base_height)
|
|
.opengl()
|
|
.build()
|
|
.unwrap();
|
|
|
|
let canvas = window.into_canvas().build().unwrap();
|
|
|
|
let (audio_sender, audio_receiver) = crossbeam_channel::bounded(2);
|
|
|
|
let audio = sdl_context.audio().unwrap();
|
|
let desired_spec = AudioSpecDesired {
|
|
freq: Some(av_info.timing.sample_rate.round() as i32),
|
|
channels: Some(2),
|
|
samples: None,
|
|
};
|
|
let mut audio_spec = None;
|
|
let audio_device = audio
|
|
.open_playback(None, &desired_spec, |spec| {
|
|
if spec.format != AudioFormat::S16LSB {
|
|
eprintln!("unsupported audio format {:?}", spec.format);
|
|
}
|
|
audio_spec = Some(spec.clone());
|
|
MySdlAudio {
|
|
audio_spec: spec,
|
|
audio_receiver,
|
|
}
|
|
})
|
|
.unwrap();
|
|
|
|
let gamepad_subsys = sdl_context.game_controller().unwrap();
|
|
let mut gamepads = Vec::new();
|
|
for i in 0..gamepad_subsys.num_joysticks().unwrap() {
|
|
gamepads.extend(gamepad_subsys.open(i).into_iter());
|
|
}
|
|
|
|
let event_pump = sdl_context.event_pump().unwrap();
|
|
|
|
Sdl2Component {
|
|
preferred_pad: None,
|
|
av_info,
|
|
_sdl_context: sdl_context,
|
|
canvas,
|
|
pixel_format,
|
|
audio_buffer: Default::default(),
|
|
audio_spec: audio_spec.unwrap(),
|
|
audio_device,
|
|
audio_sender,
|
|
gamepad_subsys,
|
|
gamepads,
|
|
frame_begin: Instant::now(),
|
|
event_pump,
|
|
}
|
|
}
|
|
|
|
fn send_audio_samples(&mut self) {
|
|
let stereo_samples = self.audio_spec.samples as usize * 2;
|
|
while self.audio_buffer.len() >= stereo_samples {
|
|
let remainder = self.audio_buffer.split_off(stereo_samples);
|
|
let msg = std::mem::replace(&mut self.audio_buffer, remainder);
|
|
let _ = self.audio_sender.try_send(msg);
|
|
}
|
|
}
|
|
}
|
|
|
|
impl RetroCallbacks for Sdl2Component {
|
|
fn video_refresh(&mut self, data: &[u8], width: u32, height: u32, pitch: u32) {
|
|
let rect = Rect::new(0, 0, width, height);
|
|
|
|
if let Ok(mut tex) =
|
|
self.canvas
|
|
.texture_creator()
|
|
.create_texture_static(self.pixel_format, width, height)
|
|
{
|
|
if tex.update(rect, data, pitch as usize).is_ok() {
|
|
self.canvas.clear();
|
|
self.canvas.copy(&tex, None, None).unwrap();
|
|
}
|
|
}
|
|
}
|
|
|
|
fn audio_sample(&mut self, left: i16, right: i16) {
|
|
self.audio_buffer.push(left);
|
|
self.audio_buffer.push(right);
|
|
self.send_audio_samples()
|
|
}
|
|
|
|
fn audio_sample_batch(&mut self, stereo_pcm: &[i16]) -> usize {
|
|
self.audio_buffer.extend(stereo_pcm);
|
|
self.send_audio_samples();
|
|
stereo_pcm.len()
|
|
}
|
|
|
|
fn input_poll(&mut self) {
|
|
self.gamepad_subsys.update();
|
|
}
|
|
|
|
fn input_state(&mut self, port: u32, device: InputDeviceId, index: InputIndex) -> i16 {
|
|
match self.gamepads.get(port as usize) {
|
|
Some(gamepad) => {
|
|
match device {
|
|
InputDeviceId::Joypad(button) => {
|
|
match button_map(&button) {
|
|
Some(x) => gamepad.button(x) as i16,
|
|
None => match button {
|
|
JoypadButton::L2 => gamepad.axis(Axis::TriggerLeft),
|
|
JoypadButton::R2 => gamepad.axis(Axis::TriggerRight),
|
|
_ => 0,
|
|
}
|
|
}
|
|
}
|
|
InputDeviceId::Analog(axis) => gamepad.axis(axis_map(index, axis)),
|
|
_ => 0,
|
|
}
|
|
}
|
|
None => 0,
|
|
}
|
|
}
|
|
|
|
fn set_pixel_format(&mut self, pix_fmt: PixelFormat) -> Option<bool> {
|
|
self.pixel_format = match pix_fmt {
|
|
PixelFormat::ARGB1555 => sdl2::pixels::PixelFormatEnum::RGB555,
|
|
PixelFormat::ARGB8888 => sdl2::pixels::PixelFormatEnum::ARGB8888,
|
|
PixelFormat::RGB565 => sdl2::pixels::PixelFormatEnum::RGB565,
|
|
};
|
|
Some(true)
|
|
}
|
|
|
|
fn get_variable(&mut self, key: &str) -> Option<String> {
|
|
match key {
|
|
"beetle_saturn_analog_stick_deadzone" => Some("15%".to_string()),
|
|
"parallel-n64-gfxplugin" => Some("angrylion".to_string()),
|
|
"parallel-n64-astick-deadzone" => Some("15%".to_string()),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
fn get_input_device_capabilities(&mut self) -> Option<u64> {
|
|
let bits = (1 << (DeviceType::Joypad as u32)) | (1 << (DeviceType::Analog as u32));
|
|
Some(bits as u64)
|
|
}
|
|
|
|
fn set_system_av_info(&mut self, av_info: &SystemAvInfo) -> Option<bool> {
|
|
self.set_geometry(&av_info.geometry);
|
|
self.av_info = av_info.clone();
|
|
Some(true)
|
|
}
|
|
|
|
fn set_controller_info(&mut self, controller_info: &Vec<ControllerDescription2>) -> Option<bool> {
|
|
for ci in controller_info {
|
|
// so we can have analog support in beetle/mednafen saturn
|
|
if ci.name.as_str() == "3D Control Pad" {
|
|
self.preferred_pad = Some(ci.device_id());
|
|
break;
|
|
}
|
|
}
|
|
Some(true)
|
|
}
|
|
|
|
fn set_geometry(&mut self, geom: &GameGeometry) -> Option<bool> {
|
|
let _ = self.canvas.window_mut().set_size(geom.base_width, geom.base_height);
|
|
let _ = self.canvas.set_logical_size(geom.base_width, geom.base_height);
|
|
self.av_info.geometry = geom.clone();
|
|
Some(true)
|
|
}
|
|
}
|
|
|
|
struct MySdlAudio {
|
|
audio_spec: AudioSpec,
|
|
audio_receiver: crossbeam_channel::Receiver<Vec<i16>>,
|
|
}
|
|
|
|
impl AudioCallback for MySdlAudio {
|
|
type Channel = i16;
|
|
|
|
fn callback(&mut self, out: &mut [Self::Channel]) {
|
|
if self.audio_spec.format == AudioFormat::S16LSB {
|
|
if let Ok(samples) = self.audio_receiver.recv_timeout(Duration::from_millis(500)) {
|
|
out.copy_from_slice(&samples[..out.len()]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn button_map(retro_button: &JoypadButton) -> Option<Button> {
|
|
match retro_button {
|
|
JoypadButton::B => Some(Button::A),
|
|
JoypadButton::Y => Some(Button::X),
|
|
JoypadButton::Select => Some(Button::Back),
|
|
JoypadButton::Start => Some(Button::Start),
|
|
JoypadButton::Up => Some(Button::DPadUp),
|
|
JoypadButton::Down => Some(Button::DPadDown),
|
|
JoypadButton::Left => Some(Button::DPadLeft),
|
|
JoypadButton::Right => Some(Button::DPadRight),
|
|
JoypadButton::A => Some(Button::B),
|
|
JoypadButton::X => Some(Button::Y),
|
|
JoypadButton::L => Some(Button::LeftShoulder),
|
|
JoypadButton::R => Some(Button::RightShoulder),
|
|
// SDL2 controller API doesn't have L2/R2 as buttons, they're considered axes
|
|
JoypadButton::L2 => None,
|
|
JoypadButton::R2 => None,
|
|
JoypadButton::L3 => Some(Button::LeftStick),
|
|
JoypadButton::R3 => Some(Button::RightStick),
|
|
}
|
|
}
|
|
|
|
fn axis_map(index: InputIndex, axis: AnalogAxis) -> Axis {
|
|
match (index, axis) {
|
|
(InputIndex::Left, AnalogAxis::X) => Axis::LeftX,
|
|
(InputIndex::Left, AnalogAxis::Y) => Axis::LeftY,
|
|
(InputIndex::Right, AnalogAxis::X) => Axis::RightX,
|
|
(InputIndex::Right, AnalogAxis::Y) => Axis::RightY,
|
|
}
|
|
}
|