mod.rs

#![allow(warnings)]

pub mod ffmpeg;

use crate::{
	iotro::intro,
	render::ffmpeg::Ffmpeg,
	time::{format_date, Time},
	Project, ProjectSourceMetadata, Resolution
};
use anyhow::{bail, Context};
use camino::{Utf8Path as Path, Utf8PathBuf as PathBuf};
use rational::Rational;
use std::{
	fs::{self, File},
	io::Write as _,
	process::{Command, Stdio}
};

const INTRO_LEN: Time = Time {
	seconds: 3,
	micros: 0
};
const OUTRO_LEN: Time = Time {
	seconds: 5,
	micros: 0
};
const TRANSITION: &str = "fadeblack";
const TRANSITION_LEN: Time = Time {
	seconds: 0,
	micros: 200_000
};

fn cmd() -> Command {
	let mut cmd = Command::new("busybox");
	cmd.arg("ash")
		.arg("-exuo")
		.arg("pipefail")
		.arg("-c")
		.arg("exec");
	cmd
}

fn ffprobe() -> Command {
	let mut cmd = cmd();
	cmd.arg("ffprobe")
		.arg("-v")
		.arg("error")
		.arg("-of")
		.arg("default=noprint_wrappers=1:nokey=1");
	cmd
}

fn read_output(cmd: &mut Command) -> anyhow::Result<String> {
	let out = cmd.stderr(Stdio::inherit()).output()?;
	if !out.status.success() {
		bail!(
			"Executed command failed with exit status {:?}",
			out.status.code()
		);
	}
	String::from_utf8(out.stdout).context("Command returned non-utf8 output")
}

fn ffprobe_video(query: &str, input: &Path) -> anyhow::Result<String> {
	read_output(
		ffprobe()
			.arg("-select_streams")
			.arg("v:0")
			.arg("-show_entries")