stremio-shell-ng/src/stremio_app/stremio_player/stremio_player.rs
2021-07-20 10:15:24 +03:00

235 lines
11 KiB
Rust

use native_windows_gui::{self as nwg, PartialUi};
use serde::{Deserialize, Serialize};
use std::cell::RefCell;
use std::sync::mpsc;
use std::sync::{Arc, Mutex};
use std::thread;
#[derive(Default, Serialize, Deserialize, Debug, Clone)]
pub struct MpvEvent {
#[serde(skip_serializing_if = "Option::is_none")]
error: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
name: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
data: Option<serde_json::Value>,
#[serde(skip_serializing_if = "Option::is_none")]
reason: Option<String>,
}
impl MpvEvent {
fn value_from_format(data: mpv::Format, as_json: bool) -> serde_json::Value {
match data {
mpv::Format::Flag(d) => serde_json::Value::Bool(d),
mpv::Format::Int(d) => serde_json::Value::Number(
serde_json::Number::from_f64(d as f64).expect("MPV returned invalid number"),
),
mpv::Format::Double(d) => serde_json::Value::Number(
serde_json::Number::from_f64(d).expect("MPV returned invalid number"),
),
mpv::Format::OsdStr(s) => serde_json::Value::String(s.to_string()),
mpv::Format::Str(s) => {
if as_json {
serde_json::from_str(s).expect("MPV returned invalid JSON data")
} else {
serde_json::Value::String(s.to_string())
}
}
}
}
fn string_from_end_reason(data: mpv::EndFileReason) -> String {
match data {
mpv::EndFileReason::MPV_END_FILE_REASON_ERROR => "error".to_string(),
mpv::EndFileReason::MPV_END_FILE_REASON_QUIT => "quit".to_string(),
_ => "other".to_string(),
}
}
}
#[derive(Default)]
pub struct Player {
pub channel: RefCell<Option<(mpsc::Sender<String>, Arc<Mutex<mpsc::Receiver<String>>>)>>,
}
impl PartialUi for Player {
fn build_partial<W: Into<nwg::ControlHandle>>(
data: &mut Self,
parent: Option<W>,
) -> Result<(), nwg::NwgError> {
let (tx, rx) = mpsc::channel::<String>();
let (tx1, rx1) = mpsc::channel::<String>();
data.channel = RefCell::new(Some((tx, Arc::new(Mutex::new(rx1)))));
let hwnd = parent
.expect("No parent window")
.into()
.hwnd()
.expect("Cannot obtain window handle") as i64;
thread::spawn(move || {
let mut mpv_builder =
mpv::MpvHandlerBuilder::new().expect("Error while creating MPV builder");
mpv_builder
.set_option("wid", hwnd)
.expect("failed setting wid");
// mpv_builder.set_option("vo", "gpu").expect("unable to set vo");
// win, opengl: works but least performancy, 10-15% CPU
// winvk, vulkan: works as good as d3d11
// d3d11, d1d11: works great
// dxinterop, auto: works, slightly more cpu use than d3d11
// default (auto) seems to be d3d11 (vo/gpu/d3d11)
mpv_builder
.set_option("gpu-context", "angle")
.and_then(|_| mpv_builder.set_option("gpu-api", "auto"))
.expect("setting gpu options failed");
mpv_builder
.try_hardware_decoding()
.expect("failed setting hwdec");
mpv_builder
.set_option("terminal", "yes")
.expect("failed setting terminal");
mpv_builder
.set_option("msg-level", "all=v")
.expect("failed setting msg-level");
//mpv_builder.set_option("quiet", "yes").expect("failed setting msg-level");
let mut mpv = mpv_builder.build().expect("Cannot build MPV");
let message_queue: Arc<Mutex<Vec<String>>> = Arc::new(Mutex::new(vec![]));
let thread_messages = Arc::clone(&message_queue);
thread::spawn(move || loop {
if let Ok(msg) = rx.recv() {
let mut messages = thread_messages.lock().unwrap();
messages.push(msg);
}
});
'main: loop {
// wait up to X seconds for an event.
while let Some(event) = mpv.wait_event(0.03) {
// even if you don't do anything with the events, it is still necessary to empty
// the event loop
let json_responses = ["track-list", "video-params", "metadata"];
let resp_event = match event {
mpv::Event::PropertyChange {
name,
change,
reply_userdata: _,
} => Some((
"mpv-prop-change",
MpvEvent {
name: Some(name.to_string()),
data: Some(MpvEvent::value_from_format(
change,
json_responses.contains(&name),
)),
..Default::default()
},
)),
mpv::Event::EndFile(Ok(reason)) => Some((
"mpv-event-ended",
MpvEvent {
reason: Some(MpvEvent::string_from_end_reason(reason)),
..Default::default()
},
)),
mpv::Event::Shutdown => {
break 'main;
}
_ => None,
};
if let Some(resp) = resp_event {
tx1.send(
serde_json::to_string(&resp).expect("Cannot generate MPV event JSON"),
)
.ok();
}
} // event processing
let mut in_message = message_queue.lock().unwrap();
for msg in in_message.iter() {
let (command, data): (String, serde_json::Value) =
serde_json::from_str(msg).unwrap();
match command.as_str() {
"mpv-observe-prop" => {
if let Some(property) = data.as_str() {
match property {
"pause" | "paused-for-cache" | "seeking" | "eof-reached" => {
mpv.observe_property::<bool>(property, 0).ok();
}
"aid" | "vid" | "sid" => {
mpv.observe_property::<i64>(property, 0).ok();
}
"time-pos"
| "volume"
| "duration"
| "sub-scale"
| "cache-buffering-state"
| "sub-pos" => {
mpv.observe_property::<f64>(property, 0).ok();
}
"path" | "mpv-version" | "ffmpeg-version" | "track-list"
| "video-params" | "metadata" => {
mpv.observe_property::<&str>(property, 0).ok();
}
other => {
eprintln!(
"mpv-observe-prop: not implemented for `{}`",
other
);
}
};
}
}
"mpv-set-prop" => {
match serde_json::from_value::<Vec<serde_json::Value>>(data.clone()) {
Ok(prop_vector) => {
if let [prop, val] = &prop_vector[..] {
let prop = prop.as_str().expect("Property is not a string");
// If we change vo MPV panics
if prop != "vo" {
match val {
serde_json::Value::Bool(v) => {
mpv.set_property(prop, *v).ok();
}
serde_json::Value::Number(v) => {
mpv.set_property(prop, v.as_f64().unwrap())
.ok();
}
serde_json::Value::String(v) => {
mpv.set_property(prop, v.as_str()).ok();
}
_ => {}
};
};
}
}
Err(e) => {
eprintln!("mpv-set-prop Error: {:?} for data {}", e, data)
}
};
}
"mpv-command" => {
match serde_json::from_value::<Vec<String>>(data.clone()) {
Ok(data) => {
let data: Vec<_> = data.iter().map(|s| s.as_str()).collect();
mpv.command(&data).ok();
}
Err(e) => {
eprintln!("mpv-command Error: {:?} for data {}", e, data)
}
}
}
_ => {}
};
// let video_path = "http://distribution.bbb3d.renderfarming.net/video/mp4/bbb_sunflower_1080p_30fps_normal.mp4";
// mpv.command(&["loadfile", video_path]).ok();
// mpv.command(&["stop"]).ok();
// mpv.set_property("paused", true).ok();
}
*in_message = vec![];
}
});
Ok(())
}
}