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atem-connection-rs
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Add lowerlevel socket implementation

This commit is contained in:
Sam W 2025-06-21 15:58:19 +01:00
parent 5fb847aec6
commit 8be762b0ef
9 changed files with 671 additions and 25 deletions
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335
Cargo.lock generated
View File

@ -78,8 +78,10 @@ dependencies = [
name = "atem-connection-rs"
version = "0.1.0"
dependencies = [
"defmt",
"derive-getters",
"derive-new",
"embassy-net",
"enumflags2",
"itertools",
"log",
@ -138,6 +140,12 @@ version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "byteorder"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
[[package]]
name = "bytes"
version = "1.5.0"
@ -187,7 +195,7 @@ dependencies = [
"heck",
"proc-macro2",
"quote",
"syn 2.0.48",
"syn 2.0.104",
]
[[package]]
@ -229,6 +237,44 @@ version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
[[package]]
name = "critical-section"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
[[package]]
name = "defmt"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "548d977b6da32fa1d1fda2876453da1e7df63ad0304c8b3dae4dbe7b96f39b78"
dependencies = [
"bitflags",
"defmt-macros",
]
[[package]]
name = "defmt-macros"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3d4fc12a85bcf441cfe44344c4b72d58493178ce635338a3f3b78943aceb258e"
dependencies = [
"defmt-parser",
"proc-macro-error2",
"proc-macro2",
"quote",
"syn 2.0.104",
]
[[package]]
name = "defmt-parser"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "10d60334b3b2e7c9d91ef8150abfb6fa4c1c39ebbcf4a81c2e346aad939fee3e"
dependencies = [
"thiserror",
]
[[package]]
name = "derive-getters"
version = "0.2.0"
@ -248,7 +294,16 @@ checksum = "d150dea618e920167e5973d70ae6ece4385b7164e0d799fe7c122dd0a5d912ad"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.48",
"syn 2.0.104",
]
[[package]]
name = "document-features"
version = "0.2.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "95249b50c6c185bee49034bcb378a49dc2b5dff0be90ff6616d31d64febab05d"
dependencies = [
"litrs",
]
[[package]]
@ -257,6 +312,127 @@ version = "1.15.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
[[package]]
name = "embassy-net"
version = "0.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "940c4b9fe5c1375b09a0c6722c0100d6b2ed46a717a34f632f26e8d7327c4383"
dependencies = [
"document-features",
"embassy-net-driver",
"embassy-sync",
"embassy-time",
"embedded-io-async",
"embedded-nal-async",
"heapless",
"managed",
"smoltcp",
]
[[package]]
name = "embassy-net-driver"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "524eb3c489760508f71360112bca70f6e53173e6fe48fc5f0efd0f5ab217751d"
[[package]]
name = "embassy-sync"
version = "0.6.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8d2c8cdff05a7a51ba0087489ea44b0b1d97a296ca6b1d6d1a33ea7423d34049"
dependencies = [
"cfg-if",
"critical-section",
"embedded-io-async",
"futures-sink",
"futures-util",
"heapless",
]
[[package]]
name = "embassy-time"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f820157f198ada183ad62e0a66f554c610cdcd1a9f27d4b316358103ced7a1f8"
dependencies = [
"cfg-if",
"critical-section",
"document-features",
"embassy-time-driver",
"embedded-hal 0.2.7",
"embedded-hal 1.0.0",
"embedded-hal-async",
"futures-util",
]
[[package]]
name = "embassy-time-driver"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8d45f5d833b6d98bd2aab0c2de70b18bfaa10faf661a1578fd8e5dfb15eb7eba"
dependencies = [
"document-features",
]
[[package]]
name = "embedded-hal"
version = "0.2.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "35949884794ad573cf46071e41c9b60efb0cb311e3ca01f7af807af1debc66ff"
dependencies = [
"nb 0.1.3",
"void",
]
[[package]]
name = "embedded-hal"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "361a90feb7004eca4019fb28352a9465666b24f840f5c3cddf0ff13920590b89"
[[package]]
name = "embedded-hal-async"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0c4c685bbef7fe13c3c6dd4da26841ed3980ef33e841cddfa15ce8a8fb3f1884"
dependencies = [
"embedded-hal 1.0.0",
]
[[package]]
name = "embedded-io"
version = "0.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "edd0f118536f44f5ccd48bcb8b111bdc3de888b58c74639dfb034a357d0f206d"
[[package]]
name = "embedded-io-async"
version = "0.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3ff09972d4073aa8c299395be75161d582e7629cd663171d62af73c8d50dba3f"
dependencies = [
"embedded-io",
]
[[package]]
name = "embedded-nal"
version = "0.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c56a28be191a992f28f178ec338a0bf02f63d7803244add736d026a471e6ed77"
dependencies = [
"nb 1.1.0",
]
[[package]]
name = "embedded-nal-async"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "76959917cd2b86f40a98c28dd5624eddd1fa69d746241c8257eac428d83cb211"
dependencies = [
"embedded-io-async",
"embedded-nal",
]
[[package]]
name = "enumflags2"
version = "0.7.12"
@ -274,7 +450,7 @@ checksum = "67c78a4d8fdf9953a5c9d458f9efe940fd97a0cab0941c075a813ac594733827"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.48",
"syn 2.0.104",
]
[[package]]
@ -302,9 +478,9 @@ dependencies = [
[[package]]
name = "futures-core"
version = "0.3.30"
version = "0.3.31"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dfc6580bb841c5a68e9ef15c77ccc837b40a7504914d52e47b8b0e9bbda25a1d"
checksum = "05f29059c0c2090612e8d742178b0580d2dc940c837851ad723096f87af6663e"
[[package]]
name = "futures-sink"
@ -312,12 +488,49 @@ version = "0.3.30"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9fb8e00e87438d937621c1c6269e53f536c14d3fbd6a042bb24879e57d474fb5"
[[package]]
name = "futures-task"
version = "0.3.31"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f90f7dce0722e95104fcb095585910c0977252f286e354b5e3bd38902cd99988"
[[package]]
name = "futures-util"
version = "0.3.31"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9fa08315bb612088cc391249efdc3bc77536f16c91f6cf495e6fbe85b20a4a81"
dependencies = [
"futures-core",
"futures-task",
"pin-project-lite",
"pin-utils",
]
[[package]]
name = "gimli"
version = "0.25.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f0a01e0497841a3b2db4f8afa483cce65f7e96a3498bd6c541734792aeac8fe7"
[[package]]
name = "hash32"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "47d60b12902ba28e2730cd37e95b8c9223af2808df9e902d4df49588d1470606"
dependencies = [
"byteorder",
]
[[package]]
name = "heapless"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
dependencies = [
"hash32",
"stable_deref_trait",
]
[[package]]
name = "heck"
version = "0.4.1"
@ -372,6 +585,12 @@ version = "0.2.153"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
[[package]]
name = "litrs"
version = "0.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b4ce301924b7887e9d637144fdade93f9dfff9b60981d4ac161db09720d39aa5"
[[package]]
name = "lock_api"
version = "0.4.6"
@ -390,6 +609,12 @@ dependencies = [
"cfg-if",
]
[[package]]
name = "managed"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0ca88d725a0a943b096803bd34e73a4437208b6077654cc4ecb2947a5f91618d"
[[package]]
name = "memchr"
version = "2.4.0"
@ -417,6 +642,21 @@ dependencies = [
"windows-sys 0.48.0",
]
[[package]]
name = "nb"
version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "801d31da0513b6ec5214e9bf433a77966320625a37860f910be265be6e18d06f"
dependencies = [
"nb 1.1.0",
]
[[package]]
name = "nb"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8d5439c4ad607c3c23abf66de8c8bf57ba8adcd1f129e699851a6e43935d339d"
[[package]]
name = "num_cpus"
version = "1.16.0"
@ -478,10 +718,38 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"
[[package]]
name = "proc-macro2"
version = "1.0.78"
name = "pin-utils"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
[[package]]
name = "proc-macro-error-attr2"
version = "2.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "96de42df36bb9bba5542fe9f1a054b8cc87e172759a1868aa05c1f3acc89dfc5"
dependencies = [
"proc-macro2",
"quote",
]
[[package]]
name = "proc-macro-error2"
version = "2.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "11ec05c52be0a07b08061f7dd003e7d7092e0472bc731b4af7bb1ef876109802"
dependencies = [
"proc-macro-error-attr2",
"proc-macro2",
"quote",
"syn 2.0.104",
]
[[package]]
name = "proc-macro2"
version = "1.0.95"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "02b3e5e68a3a1a02aad3ec490a98007cbc13c37cbe84a3cd7b8e406d76e7f778"
dependencies = [
"unicode-ident",
]
@ -557,6 +825,19 @@ version = "1.13.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e6ecd384b10a64542d77071bd64bd7b231f4ed5940fba55e98c3de13824cf3d7"
[[package]]
name = "smoltcp"
version = "0.12.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dad095989c1533c1c266d9b1e8d70a1329dd3723c3edac6d03bbd67e7bf6f4bb"
dependencies = [
"bitflags",
"byteorder",
"cfg-if",
"heapless",
"managed",
]
[[package]]
name = "socket2"
version = "0.5.6"
@ -567,6 +848,12 @@ dependencies = [
"windows-sys 0.52.0",
]
[[package]]
name = "stable_deref_trait"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
[[package]]
name = "strsim"
version = "0.10.0"
@ -586,9 +873,9 @@ dependencies = [
[[package]]
name = "syn"
version = "2.0.48"
version = "2.0.104"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
checksum = "17b6f705963418cdb9927482fa304bc562ece2fdd4f616084c50b7023b435a40"
dependencies = [
"proc-macro2",
"quote",
@ -604,6 +891,26 @@ dependencies = [
"winapi-util",
]
[[package]]
name = "thiserror"
version = "2.0.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708"
dependencies = [
"thiserror-impl",
]
[[package]]
name = "thiserror-impl"
version = "2.0.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7f7cf42b4507d8ea322120659672cf1b9dbb93f8f2d4ecfd6e51350ff5b17a1d"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.104",
]
[[package]]
name = "thread_local"
version = "1.1.3"
@ -640,7 +947,7 @@ checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.48",
"syn 2.0.104",
]
[[package]]
@ -727,6 +1034,12 @@ version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
[[package]]
name = "void"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
[[package]]
name = "wasi"
version = "0.11.0+wasi-snapshot-preview1"

6
atem-connection-rs/Cargo.toml
View File

@ -11,8 +11,12 @@ log = "0.4.14"
tokio = { version = "1.13.0", features = ["full"], optional = true }
tokio-util = { version = "0.7.10", optional = true }
enumflags2 = { version = "0.7.12", default-features = false }
embassy-net = { version = "0.7.0", optional = true, features = ["proto-ipv4", "medium-ip", "udp"]}
defmt = {version = "1.0.0", optional = true}
[features]
default = ["std"]
default = ["std", "embassy-net", "defmt"]
std = ["dep:tokio", "dep:tokio-util", "itertools/use_std"]
embassy-net = ["dep:embassy-net"]
defmt = ["dep:defmt"]

15
atem-connection-rs/src/atem_lib/atem_packet.rs
View File

@ -43,16 +43,13 @@ impl<'a> TryFrom<&'a [u8]> for AtemPacket<&'a [u8]> {
}
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum AtemPacketParseError {
/// The packet was too short
TooShort {
got: usize,
},
/// The packet was shorter than any valid packet should be.
TooShort { got: usize },
/// The packet's stated and actual lengths were different
LengthDiffers {
expected: u16,
got: usize,
},
LengthDiffers { expected: u16, got: usize },
/// The packet had invalid (unknown) flags set
InvalidFlags,
}
@ -258,8 +255,8 @@ impl<T: AsRef<[u8]>> Display for AtemPacket<T> {
self.session_id(),
self.flags(),
self.ack_number(),
self.remote_sequence_number(),
self.local_sequence_number(),
self.remote_sequence_number(),
)
}
}

285
atem-connection-rs/src/atem_lib/atem_socket_two.rs Normal file
View File

@ -0,0 +1,285 @@
use core::net::{Ipv4Addr, SocketAddrV4};
use log::debug;
use super::atem_packet::{AtemPacket, AtemPacketParseError, PacketFlag};
pub const ATEM_PORT: u16 = 9910;
pub const SYN_PAYLOAD: [u8; 8] = [0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00];
#[derive(Debug, PartialEq, Eq)]
pub enum AtemSocketState {
Closed,
StateDump,
Established { session_id: u16 },
}
/// An abstraction over an async UDP socket
pub trait SocketBackend {
type SendError;
type RecvError;
async fn send_to(&mut self, data: &[u8], addr: SocketAddrV4) -> Result<(), Self::SendError>;
async fn recv(&mut self, data: &mut [u8]) -> Result<usize, Self::RecvError>;
}
#[cfg(feature = "std")]
pub mod tokio {
use core::net::Ipv4Addr;
use tokio::net::UdpSocket;
use super::{AtemSocket, SocketBackend};
#[derive(Debug)]
pub struct TokioBackend {
sock: UdpSocket,
}
impl TokioBackend {
pub async fn new(addr: Ipv4Addr) -> Result<AtemSocket<Self>, std::io::Error> {
let b = Self {
sock: UdpSocket::bind("0.0.0.0:0").await?,
};
Ok(AtemSocket::new_with_backend(addr, b))
}
}
impl SocketBackend for TokioBackend {
type SendError = std::io::Error;
type RecvError = std::io::Error;
async fn send_to(
&mut self,
data: &[u8],
addr: core::net::SocketAddrV4,
) -> Result<(), Self::SendError> {
self.sock.send_to(data, addr).await?;
Ok(())
}
async fn recv(&mut self, data: &mut [u8]) -> Result<usize, Self::RecvError> {
let (cnt, _) = self.sock.recv_from(data).await?;
Ok(cnt)
}
}
}
#[cfg(feature = "embassy-net")]
pub mod enet {
use core::net::{Ipv4Addr, SocketAddrV4};
use embassy_net::udp::{RecvError, SendError, UdpSocket};
use super::{AtemSocket, SocketBackend};
pub struct EnetBackend<'a> {
sock: UdpSocket<'a>,
}
impl core::fmt::Debug for EnetBackend<'_> {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
write!(f, "EnetBackend")
}
}
impl<'a> EnetBackend<'a> {
pub fn new(addr: Ipv4Addr, sock: UdpSocket<'a>) -> AtemSocket<Self> {
let b = Self { sock };
AtemSocket::new_with_backend(addr, b)
}
}
impl SocketBackend for EnetBackend<'_> {
type SendError = SendError;
type RecvError = RecvError;
async fn send_to(
&mut self,
data: &[u8],
addr: SocketAddrV4,
) -> Result<(), Self::SendError> {
self.sock.send_to(data, addr).await
}
async fn recv(&mut self, data: &mut [u8]) -> Result<usize, Self::RecvError> {
let (count, _) = self.sock.recv_from(data).await?;
Ok(count)
}
}
}
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum AtemError<I: SocketBackend> {
/// Tried to do something but the socket is closed
SocketClosed,
/// There was an error from the underlying socket while receiving
Recv(I::RecvError),
/// There was an error from the underlying socket while sending
Send(I::SendError),
/// We received an invalid ATEM protocol packet
BadPacket(AtemPacketParseError),
/// The switcher denied our connection attempt.
SwitcherDeniedConnect,
/// There was some nonspecific protocol error
ProtocolError,
}
impl<I> From<AtemPacketParseError> for AtemError<I>
where
I: SocketBackend,
{
fn from(value: AtemPacketParseError) -> Self {
Self::BadPacket(value)
}
}
pub struct AtemSocket<I: SocketBackend> {
inner: I,
addr: SocketAddrV4,
state: AtemSocketState,
local_seq_num: u16,
}
impl<I> AtemSocket<I>
where
I: SocketBackend,
{
fn new_with_backend(addr: Ipv4Addr, backend: I) -> Self {
Self {
inner: backend,
addr: SocketAddrV4::new(addr, ATEM_PORT),
state: AtemSocketState::Closed,
local_seq_num: 0,
}
}
/// Connect to the ATEM, performing the connection handshake.
pub async fn connect(&mut self) -> Result<(), AtemError<I>> {
// Reset state
self.state = AtemSocketState::Closed;
self.local_seq_num = 0;
let mut buf = [0u8; 20];
// FIXME: this should be random
let initial_sid = 0x53ab;
// Step 1: Send the "SYN" with a random session id and magic payload
let (mut p, _) = AtemPacket::init(
&mut buf,
PacketFlag::NewSessionId.into(),
initial_sid,
self.local_seq_num,
Some(&SYN_PAYLOAD),
)
.unwrap();
p.set_remote_seq_num(0x3a);
self.inner
.send_to(p.inner(), self.addr)
.await
.map_err(|e| AtemError::Send(e))?;
debug!("Connect step 1: sent SYN");
// Step 2: Wait for the response from the ATEM.
// this should also have the SYN flag set and have the same session id that we sent.
// The first byte of the payload should be 0x02 - if it's 0x04 we should restart
// the connection
self.inner
.recv(&mut buf)
.await
.map_err(|e| AtemError::Recv(e))?;
let ack = AtemPacket::new_checked(buf)?;
debug!("RX: {}", ack);
if ack.flags() != PacketFlag::NewSessionId {
return Err(AtemError::ProtocolError);
}
if ack.session_id() != initial_sid {
return Err(AtemError::ProtocolError);
}
match ack.body()[0] {
0x02 => {
// all good
debug!("Connect step 2: got reply");
}
0x04 => {
// Restart connection
return Err(AtemError::SwitcherDeniedConnect);
}
_ => {
return Err(AtemError::ProtocolError);
}
}
// Step 3: Send an ACK for the packet we just received.
self.ack(initial_sid, ack.local_sequence_number()).await?;
debug!("Connect step 3: sent ACK");
self.state = AtemSocketState::StateDump;
Ok(())
}
async fn ack(&mut self, sid: u16, ack_num: u16) -> Result<(), AtemError<I>> {
let mut buf = [0u8; 12];
let (mut p, _) = AtemPacket::init(
&mut buf,
PacketFlag::AckReply.into(),
sid,
// N.B: local seq num is set to 0 in ACKs
0,
None,
)
.unwrap();
p.set_ack_num(ack_num);
debug!("TX: {}", p);
self.inner
.send_to(p.inner(), self.addr)
.await
.map_err(|e| AtemError::Send(e))?;
Ok(())
}
/// Receive a packet from the ATEM. Automatically handles sending ACKs for received packets.
pub async fn recv<'a>(
&mut self,
buf: &'a mut [u8],
) -> Result<AtemPacket<&'a [u8]>, AtemError<I>> {
if self.state == AtemSocketState::Closed {
return Err(AtemError::SocketClosed);
}
let size = self.inner.recv(buf).await.map_err(|e| AtemError::Recv(e))?;
let p: AtemPacket<_> = buf[0..size].try_into()?;
debug!("RX: {}", p);
match self.state {
AtemSocketState::StateDump => {
// We've just connected and the state's being dumped to us.
if p.body().len() == 0 {
// State dump is done.
self.state = AtemSocketState::Established {
session_id: p.session_id(),
};
debug!("ATEM state dump done, session ID is {}", p.session_id());
self.ack(p.session_id(), p.local_sequence_number()).await?;
}
}
AtemSocketState::Established { session_id } => {
if p.flags().contains(PacketFlag::AckRequest) {
self.ack(session_id, p.local_sequence_number()).await?;
}
}
AtemSocketState::Closed => unreachable!(),
}
Ok(p)
}
/// Send a packet to the ATEM. The ATEM will respond with an ACK - it's up to the caller to handle packet retransmission
pub async fn send<T: AsRef<[u8]>>(&mut self, p: AtemPacket<T>) -> Result<(), AtemError<I>> {
self.inner
.send_to(p.inner().as_ref(), self.addr)
.await
.map_err(|e| AtemError::Send(e))
}
}

1
atem-connection-rs/src/atem_lib/mod.rs
View File

@ -2,3 +2,4 @@ pub mod atem_field;
pub mod atem_packet;
#[cfg(feature = "std")]
pub mod atem_socket;
pub mod atem_socket_two;

5
atem-connection-rs/src/commands/command_base.rs
View File

@ -1,7 +1,4 @@
use std::{
boxed::Box, collections::HashMap, fmt::Debug, string::String, sync::Arc,
vec::Vec,
};
use std::{boxed::Box, collections::HashMap, fmt::Debug, string::String, sync::Arc, vec::Vec};
use crate::{enums::ProtocolVersion, state::AtemState};

1
atem-test/Cargo.toml
View File

@ -2,6 +2,7 @@
name = "atem-test"
version = "0.1.0"
edition = "2024"
default-run = "main"
[dependencies]
atem-connection-rs = { path = "../atem-connection-rs" }

0
atem-test/src/main.rs → atem-test/src/bin/main.rs
View File

48
atem-test/src/bin/socket2.rs Normal file
View File

@ -0,0 +1,48 @@
use atem_connection_rs::atem_lib::{atem_field::PrgI, atem_socket_two::tokio::TokioBackend};
use clap::Parser;
use color_eyre::Report;
/// ATEM Rust Library Test App
#[derive(Parser, Debug)]
#[command(author, version, about, long_about = None)]
struct Args {
/// IP of the ATEM to connect to
#[arg(short, long)]
ip: String,
}
#[tokio::main]
async fn main() {
let args = Args::parse();
setup_logging().unwrap();
let mut s = TokioBackend::new(args.ip.parse().unwrap()).await.unwrap();
s.connect().await.expect("aa");
let mut buf = [0u8; 2048];
loop {
let p = s.recv(&mut buf).await.unwrap();
let prg: Vec<PrgI> = p.fields::<PrgI>().collect::<Result<_, _>>().unwrap();
if !prg.is_empty() {
println!("{:?}", prg);
}
}
}
fn setup_logging() -> Result<(), Report> {
if std::env::var("RUST_LIB_BACKTRACE").is_err() {
unsafe {
std::env::set_var("RUST_LIB_BACKTRACE", "1");
}
}
color_eyre::install()?;
if std::env::var("RUST_LOG").is_err() {
unsafe {
std::env::set_var("RUST_LOG", "debug");
}
}
env_logger::init();
Ok(())
}