Gregory Ballantine
1671b95128
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89 lines
3.1 KiB
Rust
89 lines
3.1 KiB
Rust
use config::Config;
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use std::path::Path;
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use std::process;
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use std::{thread, time};
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use log::{debug, info};
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use crate::util::io;
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use super::repository::Repository;
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pub struct Transcoder {
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config: Config,
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repository: Repository,
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}
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impl Transcoder {
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pub fn new(config: Config, repository: Repository) -> Transcoder {
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return Transcoder{
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config: config,
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repository: repository,
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}
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}
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pub fn start(self) {
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info!("Starting transcoder...");
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loop {
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// search for files in ingest
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let ingest_files = self.repository.search_ingest();
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// check if we found any files to transcode
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if ingest_files.len() < 1 {
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info!("There were no files found in ingest to transcode; skipping run.");
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} else {
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for i in ingest_files {
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let ingest_path = Path::new(&self.repository.ingest_dir).join(&i);
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if io::is_file_locked(&ingest_path.to_str().unwrap()) {
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info!("{} is currently open in another program; skipping it for this run.", &i);
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continue;
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}
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// copy the file to the archive
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self.repository.archive_file(&i);
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// perform the video transcode
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self.transcode(&i);
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// remove the source file
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self.repository.cleanup_file(&i);
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}
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}
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// put the loop to sleep for X minutes
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let sleep_minutes = time::Duration::from_secs((self.config.get_int("transcoder.interval").unwrap() as u64 * 60).into());
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thread::sleep(sleep_minutes);
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}
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}
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fn transcode(&self, file: &str) {
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let ingest_file = Path::new(&self.repository.ingest_dir).join(file);
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let video_format = &self.config.get_string("transcoder.video_format").unwrap();
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let output_stem = Path::new(file).file_stem().unwrap();
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let output_bits = vec![output_stem.to_str().unwrap(), &video_format];
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let output_name = output_bits.join(".");
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let output_file = Path::new(&self.repository.output_dir).join(output_name);
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let video_codec = &self.config.get_string("transcoder.video_codec").unwrap();
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info!("Transcoding {} to {} with the {} encoder.", ingest_file.display(), output_file.display(), video_codec);
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let cmd_output = process::Command::new("/usr/bin/ffmpeg")
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.arg("-i") .arg(&*ingest_file.to_string_lossy())
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.arg("-y")
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.arg("-f") .arg(&video_format)
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.arg("-c:v") .arg(&video_codec)
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.arg("-s") .arg(&self.config.get_string("transcoder.video_resolution").unwrap())
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.arg("-r") .arg(format!("{}", self.config.get_string("transcoder.video_framerate").unwrap()))
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.arg("-vf") .arg(format!("format={}", &self.config.get_string("transcoder.video_color").unwrap()))
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.arg("-profile:v").arg(&self.config.get_string("transcoder.video_profile").unwrap())
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.arg("-c:a") .arg(&self.config.get_string("transcoder.audio_codec").unwrap())
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.arg(&*output_file.to_string_lossy())
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.output()
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.expect("Failed to execute command");
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assert!(cmd_output.status.success());
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let results_raw = &String::from_utf8_lossy(&cmd_output.stderr);
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debug!("{}", results_raw);
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}
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}
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