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use std::{collections::HashMap, fs};
use anyhow::Context;
use log::error;
use serde::{Deserialize, Serialize};
use serde_json::json;
type Protection = u8;
#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct Service {
pub unique_id: String,
pub sid: u32,
pub ecc: u8,
pub label: String,
pub shortlabel: String,
pub input_port: u16,
pub bitrate: u32,
pub protection: Protection,
}
impl Service {
pub fn sid_hex(&self) -> String {
format!("{:04X}", self.sid)
}
pub fn ecc_hex(&self) -> String {
format!("{:02X}", self.ecc)
}
pub fn dump_to_service_json(&self) -> serde_json::Value {
json!({
"id": self.sid,
"ecc": self.ecc,
"label": self.label,
"shortlabel": self.shortlabel,
})
}
pub fn dump_to_subchannel_json(&self, id: u32) -> serde_json::Value {
json!({
"type": "dabplus",
"bitrate": self.bitrate,
"id": id,
"protection": self.protection,
"inputproto": "edi",
"inputuri": format!("tcp://127.0.0.1:{}", self.input_port),
"buffer-management": "prebuffering",
"buffer": 40,
"prebuffering": 20
})
}
}
#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct Config {
pub instance_name: String,
pub dabmux_config_location: String,
pub tist: bool,
pub tist_offset: i32,
// TODO tai_clock_bulletins
pub ensemble_id: u16,
pub ensemble_ecc: u8,
pub ensemble_label: String,
pub ensemble_shortlabel: String,
pub output_edi_port: u16,
pub services: Vec<Service>,
}
impl Config {
pub fn ensemble_id_hex(&self) -> String {
format!("{:04X}", self.ensemble_id)
}
pub fn ensemble_ecc_hex(&self) -> String {
format!("{:02X}", self.ensemble_ecc)
}
}
impl Default for Config {
fn default() -> Self {
Config {
instance_name: "CHANGEME".to_owned(),
dabmux_config_location: "/etc/odr-dabmux.json".to_owned(),
tist: true,
tist_offset: 0,
ensemble_id: 0x4FFF,
ensemble_ecc: 0xE1,
ensemble_label: "OpenDigitalRadio".to_owned(),
ensemble_shortlabel: "ODR".to_owned(),
output_edi_port: 8951,
services: vec![
Service {
unique_id: "nothing".to_owned(),
sid: 0x4DAA,
ecc: 0xE1,
label: "nothing".to_owned(),
shortlabel: "no".to_owned(),
input_port: 9001,
bitrate: 128,
protection: 2
}
],
}
}
}
const CONFIGFILE : &str = "odr-dabmux-gui-config.toml";
impl Config {
pub fn load() -> anyhow::Result<Self> {
if std::path::Path::new(CONFIGFILE).exists() {
let file_contents = fs::read_to_string(CONFIGFILE)?;
toml::from_str(&file_contents)
.or_else(|e| {
error!("Failed to read existing config file: {}", e);
Ok(Default::default())
})
}
else {
Ok(Default::default())
}
}
pub fn store(&self) -> anyhow::Result<()> {
fs::write(CONFIGFILE, toml::to_string_pretty(&self)?)
.context("writing config file")
}
pub fn write_dabmux_json(&self) -> anyhow::Result<()> {
let now = chrono::Utc::now().to_rfc3339();
let mut services = HashMap::new();
for s in &self.services {
let uid = format!("srv-{}", s.unique_id);
services.insert(uid, s.dump_to_service_json());
}
let mut subchannels = HashMap::new();
let mut id = 0;
for s in &self.services {
id += 1;
let uid = format!("sub-{}", s.unique_id);
subchannels.insert(uid, s.dump_to_subchannel_json(id));
}
let mut components = HashMap::new();
for s in &self.services {
components.insert(
format!("comp-{}", s.unique_id),
json!({
"service": format!("srv-{}", s.unique_id),
"subchannel": format!("sub-{}", s.unique_id),
"user-applications": {
"userapp": "slideshow"
}
}));
}
let new_conf = json!({
"_comment": format!("Generated at {} by odr-dabmux-gui", now),
"general": {
"dabmode": 1,
"nbframes": 0,
"syslog": false,
"tist": self.tist,
"tist_offset": self.tist_offset,
"managementport": 12720
},
"remotecontrol": {
"telnetport": 12721,
"zmqendpoint": "tcp://lo:12722"
},
"ensemble": {
"id": self.ensemble_id,
"ecc": self.ensemble_ecc,
"local-time-offset": "auto",
"reconfig-counter": "hash",
"label": self.ensemble_label,
"shortlabel": self.ensemble_shortlabel
},
"services": services,
"subchannels": subchannels,
"components": components,
"outputs": {
"throttle": "simul://",
"edi": {
"destinations": {
"example_tcp": {
"protocol": "tcp",
"listenport": self.output_edi_port
}
}
}
}
});
fs::write(&self.dabmux_config_location, serde_json::to_string_pretty(&new_conf)?)
.context("writing dabmux config file")
}
}
|
