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GNU AFFERO GENERAL PUBLIC LICENSE
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@ -87,15 +87,6 @@ dependencies = [
"winit",
]
[[package]]
name = "addr2line"
version = "0.21.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8a30b2e23b9e17a9f90641c7ab1549cd9b44f296d3ccbf309d2863cfe398a0cb"
dependencies = [
"gimli",
]
[[package]]
name = "adler"
version = "1.0.2"
@ -238,7 +229,7 @@ dependencies = [
"polling",
"rustix 0.37.23",
"slab",
"socket2 0.4.9",
"socket2",
"waker-fn",
]
@ -342,21 +333,6 @@ version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
[[package]]
name = "backtrace"
version = "0.3.69"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2089b7e3f35b9dd2d0ed921ead4f6d318c27680d4a5bd167b3ee120edb105837"
dependencies = [
"addr2line",
"cc",
"cfg-if",
"libc",
"miniz_oxide",
"object",
"rustc-demangle",
]
[[package]]
name = "bitflags"
version = "1.3.2"
@ -632,6 +608,40 @@ dependencies = [
"cfg-if",
]
[[package]]
name = "crossbeam-channel"
version = "0.5.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a33c2bf77f2df06183c3aa30d1e96c0695a313d4f9c453cc3762a6db39f99200"
dependencies = [
"cfg-if",
"crossbeam-utils",
]
[[package]]
name = "crossbeam-deque"
version = "0.8.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ce6fd6f855243022dcecf8702fef0c297d4338e226845fe067f6341ad9fa0cef"
dependencies = [
"cfg-if",
"crossbeam-epoch",
"crossbeam-utils",
]
[[package]]
name = "crossbeam-epoch"
version = "0.9.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ae211234986c545741a7dc064309f67ee1e5ad243d0e48335adc0484d960bcc7"
dependencies = [
"autocfg",
"cfg-if",
"crossbeam-utils",
"memoffset 0.9.0",
"scopeguard",
]
[[package]]
name = "crossbeam-utils"
version = "0.8.16"
@ -775,6 +785,12 @@ dependencies = [
"web-sys",
]
[[package]]
name = "either"
version = "1.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
[[package]]
name = "emath"
version = "0.22.0"
@ -895,10 +911,8 @@ version = "0.1.0"
dependencies = [
"eframe",
"linuxvideo",
"serde",
"serde_json",
"rayon",
"thiserror",
"tokio",
"zune-core",
"zune-jpeg",
]
@ -1023,12 +1037,6 @@ dependencies = [
"wasi",
]
[[package]]
name = "gimli"
version = "0.28.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6fb8d784f27acf97159b40fc4db5ecd8aa23b9ad5ef69cdd136d3bc80665f0c0"
[[package]]
name = "gl_generator"
version = "0.14.0"
@ -1200,12 +1208,6 @@ dependencies = [
"windows-sys 0.48.0",
]
[[package]]
name = "itoa"
version = "1.0.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
[[package]]
name = "jni"
version = "0.21.1"
@ -1363,6 +1365,15 @@ dependencies = [
"autocfg",
]
[[package]]
name = "memoffset"
version = "0.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5a634b1c61a95585bd15607c6ab0c4e5b226e695ff2800ba0cdccddf208c406c"
dependencies = [
"autocfg",
]
[[package]]
name = "minimal-lexical"
version = "0.2.1"
@ -1611,15 +1622,6 @@ dependencies = [
"objc",
]
[[package]]
name = "object"
version = "0.32.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9cf5f9dd3933bd50a9e1f149ec995f39ae2c496d31fd772c1fd45ebc27e902b0"
dependencies = [
"memchr",
]
[[package]]
name = "once_cell"
version = "1.18.0"
@ -1812,6 +1814,28 @@ version = "0.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f2ff9a1f06a88b01621b7ae906ef0211290d1c8a168a15542486a8f61c0833b9"
[[package]]
name = "rayon"
version = "1.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1d2df5196e37bcc87abebc0053e20787d73847bb33134a69841207dd0a47f03b"
dependencies = [
"either",
"rayon-core",
]
[[package]]
name = "rayon-core"
version = "1.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4b8f95bd6966f5c87776639160a66bd8ab9895d9d4ab01ddba9fc60661aebe8d"
dependencies = [
"crossbeam-channel",
"crossbeam-deque",
"crossbeam-utils",
"num_cpus",
]
[[package]]
name = "redox_syscall"
version = "0.3.5"
@ -1850,12 +1874,6 @@ version = "0.7.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
[[package]]
name = "rustc-demangle"
version = "0.1.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
[[package]]
name = "rustix"
version = "0.37.23"
@ -1883,12 +1901,6 @@ dependencies = [
"windows-sys 0.48.0",
]
[[package]]
name = "ryu"
version = "1.0.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
[[package]]
name = "same-file"
version = "1.0.6"
@ -1943,17 +1955,6 @@ dependencies = [
"syn 2.0.31",
]
[[package]]
name = "serde_json"
version = "1.0.107"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6b420ce6e3d8bd882e9b243c6eed35dbc9a6110c9769e74b584e0d68d1f20c65"
dependencies = [
"itoa",
"ryu",
"serde",
]
[[package]]
name = "serde_repr"
version = "0.1.16"
@ -2064,16 +2065,6 @@ dependencies = [
"winapi",
]
[[package]]
name = "socket2"
version = "0.5.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4031e820eb552adee9295814c0ced9e5cf38ddf1e8b7d566d6de8e2538ea989e"
dependencies = [
"libc",
"windows-sys 0.48.0",
]
[[package]]
name = "static_assertions"
version = "1.1.0"
@ -2187,36 +2178,6 @@ version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
[[package]]
name = "tokio"
version = "1.32.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "17ed6077ed6cd6c74735e21f37eb16dc3935f96878b1fe961074089cc80893f9"
dependencies = [
"backtrace",
"bytes",
"libc",
"mio",
"num_cpus",
"parking_lot",
"pin-project-lite",
"signal-hook-registry",
"socket2 0.5.4",
"tokio-macros",
"windows-sys 0.48.0",
]
[[package]]
name = "tokio-macros"
version = "2.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.31",
]
[[package]]
name = "toml_datetime"
version = "0.6.3"

4
Cargo.toml
View File

@ -8,10 +8,8 @@ edition = "2021"
[dependencies]
eframe = "0.22.0"
linuxvideo = { path = "deps/LinuxVideo" }
serde = { version = "1.0.188", features = ["derive"] }
serde_json = "1.0.107"
rayon = "1.7.0"
thiserror = "1.0.48"
tokio = { version = "1.32.0", features = ["full"] }
zune-core = { path = "deps/zune-image/zune-core" }
zune-jpeg = { path = "deps/zune-image/zune-jpeg", default-features = false, features = ["std"] }

12
README.md
View File

@ -1,12 +0,0 @@
An un-finished video calling app using Rust and egui.
555 because it's a [fictitious phone](https://en.wikipedia.org/wiki/Fictitious_telephone_number).
![The five_five_five GUI showing a live webcam view of a pocket calculator. The calculator is showing the number "555"](pictures/2023_09_27Sep.jpeg)
# Roadmap
- [x] Read, decode, display local webcam frames
- [ ] Build simulation of network protocol
- [ ] Send video over the network
- [ ] Audio

BIN
pictures/2023_09_27Sep.jpeg
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2
src/capture.rs
View File

@ -54,6 +54,8 @@ impl Capture
return Err (Error::OutputBufferTooSmall);
}
// std::thread::sleep (std::time::Duration::from_millis (500));
Ok (self.stream.dequeue (|view|
{
let bytesused = usize::try_from (view.bytesused ()).unwrap ();

182
src/controller.rs
View File

@ -1,182 +0,0 @@
/// No I/O, no blocking, no threads. One state machine that controls
/// everything.
use std::
{
time::Instant,
};
pub enum MsgFromController
{
RepaintGui (RgbaFrame),
StartJpegDecoder (JpegFrame),
StartNetworkSend (JpegFrame),
StartCapture,
}
#[derive (Clone)]
pub struct JpegFrame
{
pub data: Vec <u8>,
pub capture_time: Instant,
}
#[derive (Clone)]
pub struct RgbaFrame
{
pub data: Vec <u8>,
pub capture_time: Instant,
}
pub struct Controller
{
gui_has_new_frame: bool,
gui_needs_frame: bool,
jpeg_decoder_is_running: bool,
jpeg_decoder_has_new_frame: bool,
jpeg_decoder_needs_frame: bool,
network_send_is_running: bool,
network_send_has_new_frame: bool,
network_send_needs_frame: bool,
capture_is_running: bool,
rgba_frame: RgbaFrame,
jpeg_frame: JpegFrame,
}
impl Controller
{
pub fn new (now: Instant) -> Self
{
Self
{
gui_has_new_frame: false,
gui_needs_frame: false,
jpeg_decoder_has_new_frame: false,
jpeg_decoder_is_running: false,
jpeg_decoder_needs_frame: false,
network_send_has_new_frame: false,
network_send_is_running: false,
network_send_needs_frame: true,
capture_is_running: false,
rgba_frame: RgbaFrame
{
data: Default::default (),
capture_time: now,
},
jpeg_frame: JpegFrame
{
data: Default::default (),
capture_time: now,
},
}
}
pub fn handle_gui_needs_frame (&mut self)
{
// println! ("handle_gui_needs_frame");
self.gui_needs_frame = true;
}
pub fn handle_network_write_needs_frame (&mut self)
{
println! ("handle_network_write_needs_frame");
self.network_send_needs_frame = true;
}
pub fn handle_network_write_finished (&mut self)
{
println! ("handle_network_write_finished");
self.network_send_has_new_frame = false;
self.network_send_is_running = false;
}
pub fn handle_rgba_frame (&mut self, frame: RgbaFrame)
{
// println! ("handle_rgba_frame");
self.gui_has_new_frame = true;
self.jpeg_decoder_is_running = false;
self.jpeg_decoder_has_new_frame = false;
self.rgba_frame = frame;
}
pub fn handle_capture (&mut self, jpeg: JpegFrame)
{
// println! ("handle_capture");
self.capture_is_running = false;
self.jpeg_frame = jpeg;
self.jpeg_decoder_has_new_frame = true;
self.network_send_has_new_frame = true;
}
pub fn poll (&mut self) -> Option <MsgFromController>
{
let capture_for_jpeg_decoder = self.jpeg_decoder_needs_frame && ! self.jpeg_decoder_has_new_frame;
let capture_for_network_send = self.network_send_needs_frame && ! self.network_send_has_new_frame;
if self.gui_needs_frame && self.gui_has_new_frame
{
self.gui_has_new_frame = false;
self.gui_needs_frame = false;
// println! ("RepaintGui");
Some (MsgFromController::RepaintGui (self.rgba_frame.clone ()))
}
else if self.jpeg_decoder_has_new_frame && ! self.jpeg_decoder_is_running && self.jpeg_decoder_needs_frame
{
self.jpeg_decoder_is_running = true;
self.jpeg_decoder_needs_frame = false;
// println! ("StartJpegDecoder");
Some (MsgFromController::StartJpegDecoder (self.jpeg_frame.clone ()))
}
else if self.network_send_has_new_frame && ! self.network_send_is_running && self.network_send_needs_frame
{
self.network_send_is_running = true;
self.network_send_needs_frame = false;
Some (MsgFromController::StartNetworkSend (self.jpeg_frame.clone ()))
}
else if (capture_for_jpeg_decoder || capture_for_network_send) && ! self.capture_is_running
{
self.capture_is_running = true;
// println! ("StartCapture");
Some (MsgFromController::StartCapture)
}
else if self.gui_needs_frame && ! self.gui_has_new_frame
{
self.jpeg_decoder_needs_frame = true;
None
}
else
{
None
}
}
pub fn to_json (&self, start_time: Instant) -> serde_json::Value {
serde_json::json! ({
"gui_has_new_frame": self.gui_has_new_frame,
"gui_needs_frame": self.gui_needs_frame,
"jpeg_decoder_is_running": self.jpeg_decoder_is_running,
"jpeg_decoder_has_new_frame": self.jpeg_decoder_has_new_frame,
"jpeg_decoder_needs_frame": self.jpeg_decoder_needs_frame,
"network_send_is_running": self.network_send_is_running,
"network_send_has_new_frame": self.network_send_has_new_frame,
"network_send_needs_frame": self.network_send_needs_frame,
"capture_is_running": self.capture_is_running,
"rgba_frame_capture_time": (self.rgba_frame.capture_time - start_time).as_millis (),
"jpeg_frame_capture_time": (self.jpeg_frame.capture_time - start_time).as_millis (),
})
}
}

277
src/driver.rs
View File

@ -1,277 +0,0 @@
/// This is where all the I/O and task spawning and joining happens
use std::
{
time::{Duration, Instant},
};
use eframe::egui;
use tokio::{
fs,
io::{
AsyncWriteExt,
BufWriter,
Result,
},
sync::mpsc,
};
use crate::
{
capture::Capture,
controller::
{
Controller,
MsgFromController,
JpegFrame,
RgbaFrame,
},
};
pub enum MsgToDriver
{
GuiNeedsRgbaFrame,
GuiDebugCapture (bool),
DecodedJpegToRgba (RgbaFrame),
NetworkWriteFinished,
GotCapture ((Capture, JpegFrame)),
}
pub enum MsgToGui
{
NewRgbaFrame ((RgbaFrame, Instant)),
}
pub struct Driver
{
send: mpsc::Sender <MsgToDriver>,
recv: mpsc::Receiver <MsgToDriver>,
gui_ctx: egui::Context,
send_to_gui: mpsc::Sender <MsgToGui>,
capture: Option <Capture>,
ctl: Controller,
debug_logger: DebugLogger,
}
pub fn sleep_ms (ms: u64)
{
std::thread::sleep (std::time::Duration::from_millis (ms));
}
impl Driver
{
pub fn new (
send: mpsc::Sender <MsgToDriver>,
recv: mpsc::Receiver <MsgToDriver>,
gui_ctx: egui::Context,
send_to_gui: mpsc::Sender <MsgToGui>,
) -> Self
{
let now = Instant::now ();
Self {
send,
recv,
gui_ctx,
send_to_gui,
capture: Some (Capture::new ().unwrap ()),
ctl: Controller::new (now),
debug_logger: DebugLogger::new (now),
}
}
pub async fn run (&mut self)
{
loop
{
self.debug_logger.log_state (&self.ctl).await.unwrap ();
match self.recv.recv().await.unwrap ()
{
MsgToDriver::GuiNeedsRgbaFrame =>
{
self.ctl.handle_gui_needs_frame ();
},
MsgToDriver::GuiDebugCapture(x) => self.debug_logger.set_enabled (x).await.unwrap (),
MsgToDriver::DecodedJpegToRgba (frame) =>
{
self.ctl.handle_rgba_frame (frame);
},
MsgToDriver::NetworkWriteFinished =>
{
self.ctl.handle_network_write_finished ();
},
MsgToDriver::GotCapture ((capture, jpeg)) =>
{
self.ctl.handle_capture (jpeg);
self.capture = Some (capture);
},
}
while let Some (msg) = self.ctl.poll ()
{
match msg
{
MsgFromController::RepaintGui (rgba_frame) =>
{
self.send_to_gui.send (MsgToGui::NewRgbaFrame ((rgba_frame, Instant::now ()))).await.ok ();
self.gui_ctx.request_repaint();
},
MsgFromController::StartJpegDecoder (jpeg_frame) =>
{
let send = self.send.clone ();
tokio::task::spawn_blocking (move ||
{
// sleep_ms (500);
let mut decoder = zune_jpeg::JpegDecoder::new_with_options (&jpeg_frame.data, zune_core::options::DecoderOptions::new_fast().jpeg_set_out_colorspace(zune_core::colorspace::ColorSpace::RGBA));
decoder.decode_headers().unwrap ();
let mut rgba = vec![0u8;decoder.output_buffer_size().unwrap ()];
decoder.decode_into(&mut rgba).unwrap ();
let rgba = RgbaFrame
{
data: rgba,
capture_time: jpeg_frame.capture_time,
};
send.blocking_send (MsgToDriver::DecodedJpegToRgba (rgba)).ok ();
});
},
MsgFromController::StartNetworkSend (jpeg) =>
{
let send = self.send.clone ();
tokio::spawn (async move
{
sleep_ms (50);
send.send (MsgToDriver::NetworkWriteFinished).await.ok ();
});
},
MsgFromController::StartCapture =>
{
let mut capture = self.capture.take ().unwrap ();
let send = self.send.clone ();
tokio::task::spawn_blocking (move ||
{
let mut data = vec! [0u8; capture.size_image()];
let len = capture.wait_for_frame(&mut data).unwrap ();
data.resize (len, 0u8);
let frame = JpegFrame
{
data,
capture_time: Instant::now (),
};
// sleep_ms (500);
send.blocking_send (MsgToDriver::GotCapture ((capture, frame))).ok ();
});
}
}
}
}
}
}
struct DebugLogger {
inner: Option <DebugLoggerInner>,
start_time: Instant,
}
impl DebugLogger {
pub fn new (start_time: Instant) -> Self {
Self {
inner: None,
start_time,
}
}
pub async fn log_state (&mut self, ctl: &Controller) -> Result <()> {
if let Some (inner) = &mut self.inner {
inner.log_state(ctl).await?;
}
Ok (())
}
pub async fn set_enabled (&mut self, x: bool) -> Result <()> {
match (&mut self.inner, x) {
(None, true) => {
let f = fs::File::create ("untracked/debug.jsonl").await?;
let f = BufWriter::new (f);
self.inner = Some (DebugLoggerInner {
overhead: Default::default (),
log_ops: 0,
f,
start_time: self.start_time,
});
},
(Some (inner), false) => {
inner.log_overhead ().await?;
inner.f.flush ().await?;
self.inner = None;
},
_ => (),
}
Ok (())
}
}
struct DebugLoggerInner {
// Time spent inside the logger
overhead: Duration,
// Log operations performed
log_ops: u32,
// Log output file
f: BufWriter <fs::File>,
// An arbitrary start time to count milliseconds from
start_time: Instant,
}
impl DebugLoggerInner {
pub async fn log_overhead (&mut self) -> Result <()> {
self.log_map (|me| {
serde_json::json! ({
"overhead": {
"milliseconds": me.overhead.as_millis (),
"ops": me.log_ops,
},
})
}).await
}
pub async fn log_state (&mut self, ctl: &Controller) -> Result <()> {
self.log_map (|me| {
serde_json::json! ({
"state": ctl.to_json (me.start_time),
})
}).await
}
async fn log_map <F: FnOnce (&Self) -> serde_json::Value> (&mut self, f: F) -> Result <()> {
let start = Instant::now ();
let time = (start - self.start_time).as_millis ();
let j: serde_json::Value = f (&*self);
let line = serde_json::json! ([time, j]);
self.log_ops += 1;
self.f.write_all (format! ("{line}\n").as_bytes ()).await?;
let stop = Instant::now ();
self.overhead += stop - start;
Ok (())
}
}

66
src/hand_tracking.rs
View File

@ -1,66 +0,0 @@
use std::{
fs,
time::Instant,
};
pub fn main () {
let src_width = 1280usize;
let src_height = 720usize;
let src_stride = 3 * src_width;
let path = "untracked/input.jpg";
let jpeg_buf = fs::read (path).unwrap ();
let rgb = {
let start = Instant::now ();
let mut decoder = zune_jpeg::JpegDecoder::new_with_options (&jpeg_buf, zune_core::options::DecoderOptions::new_fast().jpeg_set_out_colorspace(zune_core::colorspace::ColorSpace::RGB));
decoder.decode_headers().unwrap ();
let info = decoder.info ().unwrap ();
assert_eq! (src_width, usize::try_from (info.width).unwrap ());
assert_eq! (src_height, usize::try_from (info.height).unwrap ());
let mut rgb = vec! [0u8; decoder.output_buffer_size ().unwrap ()];
assert_eq! (rgb.len (), src_stride * src_height);
decoder.decode_into (&mut rgb).unwrap ();
let stop = Instant::now ();
println! ("Decoded in {} ms", (stop - start).as_millis ());
rgb
};
let dst_width = src_width / 8;
let dst_height = src_height / 8;
let dst_stride = dst_width;
{
let start = Instant::now ();
let mut buf = vec! [0u8; dst_width * dst_height];
for y in 0..dst_height {
for x in 0..dst_width {
let dst_i = y * dst_stride + x;
let src_i = y * 8 * src_stride + x * 8 * 3;
let r = rgb [src_i + 0];
let g = rgb [src_i + 1];
let b = rgb [src_i + 2];
let x =
r
.saturating_sub (g)
.saturating_add (r)
.saturating_sub (b);
buf [dst_i] = x;
}
}
let stop = Instant::now ();
println! ("Shrank and filtered in {} ms", (stop - start).as_millis ());
fs::write ("untracked/skin_filter.data", &buf).unwrap ();
}
}

470
src/main.rs
View File

@ -1,4 +1,6 @@
use std::{
sync::mpsc,
thread,
time::{
Duration,
Instant,
@ -7,23 +9,7 @@ use std::{
use eframe::egui;
use tokio::sync::
{
mpsc,
watch,
};
mod capture;
mod controller;
mod driver;
mod hand_tracking;
use driver::
{
Driver,
MsgToDriver,
MsgToGui,
};
fn main() -> Result <(), Error>
{
@ -53,8 +39,6 @@ fn main() -> Result <(), Error>
println! ("{} ms", (stop - start).as_millis ());
},
Some ("hand-tracking") => hand_tracking::main (),
Some ("network") => main_network (),
Some (_) => eprintln! ("Unknown subcommand"),
}
@ -72,11 +56,11 @@ struct App {
camera_fps: u64,
latency: Duration,
send_to_ctl: mpsc::Sender <MsgToDriver>,
send_to_ctl: mpsc::SyncSender <MsgToController>,
recv_at_gui: mpsc::Receiver <MsgToGui>,
driver_thread: thread::JoinHandle <()>,
requesting_frames: bool,
debug_capture: bool,
next_stat_refresh: Instant,
}
@ -84,13 +68,21 @@ struct App {
impl App {
fn new (
cc: &eframe::CreationContext<'_>,
send_to_ctl: mpsc::Sender <MsgToDriver>,
recv_at_gui: mpsc::Receiver <MsgToGui>,
send_gui_handle: tokio::sync::oneshot::Sender <egui::Context>,
) -> Self
{
let (send_to_ctl, recv_at_ctl) = mpsc::sync_channel (8);
let (send_to_gui, recv_at_gui) = mpsc::sync_channel (8);
let gui_ctx = cc.egui_ctx.clone ();
send_gui_handle.send (gui_ctx).unwrap ();
let mut driver = Driver::new
(
send_to_ctl.clone (),
recv_at_ctl,
gui_ctx,
send_to_gui,
);
let driver_thread = thread::spawn (move || driver.run ());
let img = egui::ColorImage::new ([1280,720], egui::Color32::TEMPORARY_COLOR);
@ -105,8 +97,8 @@ impl App {
latency: Duration::from_millis(0),
send_to_ctl,
recv_at_gui,
driver_thread,
requesting_frames: true,
debug_capture: false,
next_stat_refresh: Instant::now (),
}
}
@ -122,20 +114,18 @@ impl eframe::App for App {
if self.requesting_frames
{
self.send_to_ctl.blocking_send (MsgToDriver::GuiNeedsRgbaFrame).unwrap ();
self.send_to_ctl.send (MsgToController::GuiNeedsRgbaFrame).unwrap ();
}
self.send_to_ctl.blocking_send(MsgToDriver::GuiDebugCapture (self.debug_capture)).unwrap ();
while let Ok (msg) = self.recv_at_gui.try_recv()
{
match msg
{
MsgToGui::NewRgbaFrame ((frame, _present_time)) =>
MsgToGui::NewRgbaFrame (frame) =>
{
texture.set (egui::ColorImage::from_rgba_premultiplied([1280,720], &frame.data), Default::default ());
self.latency = std::cmp::max (self.latency, Instant::now () - frame.capture_time);
self.latency = Instant::now () - frame.capture_time;
self.camera_frames += 1;
// println! (" Camera");
},
}
}
@ -149,11 +139,10 @@ impl eframe::App for App {
self.camera_fps = self.camera_frames;
self.gui_frames = 0;
self.camera_frames = 0;
self.latency = Duration::default ();
self.next_stat_refresh += Duration::from_secs(1);
}
ui.heading (format! ("{0} camera FPS, latency {1} ms", self.camera_fps, self.latency.as_millis ()));
ui.heading (format! ("{0}, {1}, {2}", self.camera_fps, self.gui_fps, self.latency.as_millis ()));
let available = ui.available_size() - egui::Vec2::new (0.0, 20.0);
let tex_size = egui::Vec2::new (texture.size()[0] as f32, texture.size()[1] as f32);
let scaled_width = available.y * tex_size.x / tex_size.y;
@ -170,190 +159,259 @@ impl eframe::App for App {
ui.image (texture, size);
self.gui_frames += 1;
// println! ("GUI");
ui.checkbox(&mut self.requesting_frames, "Run");
ui.checkbox(&mut self.debug_capture, "Debug capture");
});
}
}
enum MsgToController
{
GuiNeedsRgbaFrame,
GotCapture ((capture::Capture, JpegFrame)),
DecodedJpegToRgba (RgbaFrame),
}
enum MsgToGui
{
NewRgbaFrame (RgbaFrame),
}
enum MsgFromController
{
RepaintGui (RgbaFrame),
StartCapture,
StartJpegDecoder (JpegFrame),
}
#[derive (Clone)]
struct JpegFrame
{
data: Vec <u8>,
capture_time: Instant,
}
#[derive (Clone)]
struct RgbaFrame
{
data: Vec <u8>,
capture_time: Instant,
}
struct Controller
{
gui_has_new_frame: bool,
gui_needs_frame: bool,
capture_is_running: bool,
jpeg_decoder_is_running: bool,
jpeg_decoder_has_new_frame: bool,
jpeg_decoder_needs_frame: bool,
rgba_frame: RgbaFrame,
jpeg_frame: JpegFrame,
}
impl Controller
{
fn new (now: Instant) -> Self
{
Self
{
gui_has_new_frame: false,
gui_needs_frame: false,
capture_is_running: false,
jpeg_decoder_has_new_frame: false,
jpeg_decoder_is_running: false,
jpeg_decoder_needs_frame: false,
rgba_frame: RgbaFrame
{
data: Default::default (),
capture_time: now,
},
jpeg_frame: JpegFrame
{
data: Default::default (),
capture_time: now,
},
}
}
fn handle_rgba_frame (&mut self, frame: RgbaFrame)
{
// println! ("handle_rgba_frame");
self.gui_has_new_frame = true;
self.jpeg_decoder_is_running = false;
self.jpeg_decoder_has_new_frame = false;
self.rgba_frame = frame;
}
fn handle_capture (&mut self, jpeg: JpegFrame)
{
// println! ("handle_capture");
self.capture_is_running = false;
self.jpeg_frame = jpeg;
self.jpeg_decoder_has_new_frame = true;
}
fn handle_gui_needs_frame (&mut self)
{
// println! ("handle_gui_needs_frame");
self.gui_needs_frame = true;
}
fn poll (&mut self) -> Option <MsgFromController>
{
if self.gui_needs_frame && self.gui_has_new_frame
{
self.gui_has_new_frame = false;
self.gui_needs_frame = false;
println! ("RepaintGui");
Some (MsgFromController::RepaintGui (self.rgba_frame.clone ()))
}
else if self.jpeg_decoder_has_new_frame && ! self.jpeg_decoder_is_running && self.jpeg_decoder_needs_frame
{
self.jpeg_decoder_is_running = true;
self.jpeg_decoder_needs_frame = false;
println! ("StartJpegDecoder");
Some (MsgFromController::StartJpegDecoder (self.jpeg_frame.clone ()))
}
else if self.jpeg_decoder_needs_frame && ! self.jpeg_decoder_has_new_frame && ! self.capture_is_running
{
self.capture_is_running = true;
println! ("StartCapture");
Some (MsgFromController::StartCapture)
}
else if self.gui_needs_frame && ! self.gui_has_new_frame
{
self.jpeg_decoder_needs_frame = true;
None
}
else
{
None
}
}
}
struct Driver
{
send: mpsc::SyncSender <MsgToController>,
recv: mpsc::Receiver <MsgToController>,
gui_ctx: egui::Context,
send_to_gui: mpsc::SyncSender <MsgToGui>,
capture: Option <capture::Capture>,
ctl: Controller,
}
impl Driver
{
fn new (
send: mpsc::SyncSender <MsgToController>,
recv: mpsc::Receiver <MsgToController>,
gui_ctx: egui::Context,
send_to_gui: mpsc::SyncSender <MsgToGui>,
) -> Self
{
Self {
send,
recv,
gui_ctx,
send_to_gui,
capture: Some (capture::Capture::new ().unwrap ()),
ctl: Controller::new (Instant::now ()),
}
}
fn run (&mut self)
{
let pool = rayon::ThreadPoolBuilder::new().build().unwrap ();
loop
{
match self.recv.recv().unwrap ()
{
MsgToController::DecodedJpegToRgba (frame) =>
{
self.ctl.handle_rgba_frame (frame);
},
MsgToController::GotCapture ((capture, jpeg)) =>
{
self.ctl.handle_capture (jpeg);
self.capture = Some (capture);
},
MsgToController::GuiNeedsRgbaFrame =>
{
self.ctl.handle_gui_needs_frame ();
},
}
while let Some (msg) = self.ctl.poll ()
{
match msg
{
MsgFromController::RepaintGui (rgba_frame) =>
{
self.send_to_gui.send (MsgToGui::NewRgbaFrame (rgba_frame)).unwrap ();
self.gui_ctx.request_repaint();
},
MsgFromController::StartJpegDecoder (jpeg_frame) =>
{
let send = self.send.clone ();
pool.spawn (move ||
{
// std::thread::sleep (std::time::Duration::from_millis (500));
let mut decoder = zune_jpeg::JpegDecoder::new_with_options (&jpeg_frame.data, zune_core::options::DecoderOptions::new_fast().jpeg_set_out_colorspace(zune_core::colorspace::ColorSpace::RGBA));
decoder.decode_headers().unwrap ();
let mut rgba = vec![0u8;decoder.output_buffer_size().unwrap ()];
decoder.decode_into(&mut rgba).unwrap ();
let rgba = RgbaFrame
{
data: rgba,
capture_time: jpeg_frame.capture_time,
};
send.send (MsgToController::DecodedJpegToRgba (rgba)).unwrap ();
});
},
MsgFromController::StartCapture =>
{
let mut capture = self.capture.take ().unwrap ();
let send = self.send.clone ();
pool.spawn (move ||
{
let mut data = vec! [0u8; capture.size_image()];
capture.wait_for_frame(&mut data).unwrap ();
let frame = JpegFrame
{
data,
capture_time: Instant::now (),
};
send.send (MsgToController::GotCapture ((capture, frame))).unwrap ();
});
}
}
}
}
}
}
fn main_egui ()
{
let rt = tokio::runtime::Runtime::new ().unwrap ();
let (send_to_ctl, recv_at_ctl) = mpsc::channel (8);
let (send_to_gui, recv_at_gui) = mpsc::channel (8);
let (send_gui_handle, recv_gui_handle) = tokio::sync::oneshot::channel ();
let send_to_ctl_2 = send_to_ctl.clone ();
rt.spawn (async move {
let gui_ctx = recv_gui_handle.await.unwrap ();
let mut driver = Driver::new
(
send_to_ctl_2,
recv_at_ctl,
gui_ctx,
send_to_gui,
);
driver.run ().await
});
// GUIs are the most needy, picky, finicky piece of any program
// so they get spawned last, given the main thread, and babied.
//
// Not to mention that `run_native` is callback heck. I'm sure it's
// for a good reason, but still.
let native_options = eframe::NativeOptions::default();
eframe::run_native("Five Five Five", native_options, Box::new(|cc| Box::new(App::new(cc, send_to_ctl, recv_at_gui, send_gui_handle)))).unwrap ();
}
fn main_network ()
{
use tokio::io::
{
AsyncReadExt,
AsyncWriteExt,
};
enum MsgToController
{
AcceptedClient ((u64, mpsc::Sender <MsgToServer>)),
DisconnectedClient (u64),
GeneratedData (u64),
Request ((u64, u8)),
}
struct MsgToServer (Vec <u8>);
struct Client
{
sender: mpsc::Sender <MsgToServer>,
pause_time: Instant,
}
let rt = tokio::runtime::Runtime::new ().unwrap ();
rt.block_on (async
{
let (send_to_ctl, mut recv_at_ctl) = mpsc::channel (8);
let (send_to_gen, mut recv_at_gen) = watch::channel (Instant::now ());
// Control task
tokio::spawn (async move
{
let mut clients = std::collections::BTreeMap::default ();
while let Some (msg) = recv_at_ctl.recv ().await
{
match msg
{
MsgToController::AcceptedClient ((id, sender)) =>
{
let client = Client
{
sender,
pause_time: Instant::now (),
};
clients.insert (id, client);
},
MsgToController::DisconnectedClient(id) =>
{
clients.remove (&id);
},
MsgToController::GeneratedData (data) =>
{
let now = Instant::now ();
for (_id, client) in clients.iter_mut()
.filter(|(_id, client)| client.pause_time > now)
{
client.sender.send (MsgToServer (format! ("Data {data}\n").into_bytes())).await.unwrap ();
}
},
MsgToController::Request ((id, _req)) =>
{
let client = clients.get_mut (&id).unwrap ();
client.pause_time = Instant::now () + Duration::from_secs (2);
client.sender.send (MsgToServer (format! (":V {id}\n").into_bytes())).await.unwrap ();
send_to_gen.send (client.pause_time).unwrap ();
},
}
}
});
// Bogus data generator task
let send_to_ctl_2 = send_to_ctl.clone ();
tokio::spawn (async move
{
let mut i = 0;
while recv_at_gen.changed ().await.is_ok ()
{
let pause_time = *recv_at_gen.borrow_and_update ();
while Instant::now () < pause_time
{
println! ("Generating...");
tokio::time::sleep (Duration::from_millis(200)).await;
send_to_ctl_2.send (MsgToController::GeneratedData (i)).await.unwrap ();
i += 1;
}
};
});
let server = tokio::net::TcpListener::bind ("127.0.0.1:9001").await.unwrap ();
// Accept clients
tokio::spawn (async move
{
let mut client_id = 0u64;
while let Ok ((stream, _remote_addr)) = server.accept ().await
{
let (send_to_server, mut recv_at_server) = mpsc::channel (8);
send_to_ctl.send (MsgToController::AcceptedClient ((client_id, send_to_server))).await.unwrap ();
let (mut net_read, mut net_write) = stream.into_split ();
// Read from clients
let send_to_ctl_2 = send_to_ctl.clone ();
tokio::spawn (async move
{
loop
{
let mut buf = vec! [0u8, 0u8];
if let Err (_) = net_read.read_exact (&mut buf).await
{
break;
}
send_to_ctl_2.send (MsgToController::Request ((client_id, buf [0]))).await.unwrap ();
}
send_to_ctl_2.send (MsgToController::DisconnectedClient (client_id)).await.ok ();
});
// Write to clients
let send_to_ctl_2 = send_to_ctl.clone ();
tokio::spawn (async move
{
while let Some (msg) = recv_at_server.recv ().await
{
net_write.write_all (&msg.0).await.unwrap ();
}
send_to_ctl_2.send (MsgToController::DisconnectedClient (client_id)).await.ok ();
});
client_id += 1;
}
}).await.unwrap ();
});
eframe::run_native("Five Five Five", native_options, Box::new(|cc| Box::new(App::new(cc)))).unwrap ();
}
#[derive (Debug, thiserror::Error)]