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-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html - -[dependencies] -whisper-rs = { path = "./gitea-whisper-rs", version = "0.8.0" } -wav = "1" -tokio = "1.27" -cpal = "0.15.2" -signal-hook = "0.3.17" -byteorder = "1.5.0" -chrono = "0.4.31" -clap = { version = "4.4.10", features = ["derive"] } diff --git a/src/main.rs b/src/main.rs deleted file mode 100644 index 81e8f37..0000000 --- a/src/main.rs +++ /dev/null @@ -1,374 +0,0 @@ -use whisper_rs::{WhisperContext, FullParams, SamplingStrategy, WhisperError}; -use cpal::traits::{HostTrait, DeviceTrait, StreamTrait}; -use signal_hook::{iterator::Signals, consts::signal::SIGINT}; -use std::time::{Duration, Instant}; -use chrono; -use clap::Parser; -use std::thread; -use std::fs::File; -use std::io::Write; - -#[derive(Parser, Debug)] -struct Flags { - #[arg(long, default_value = "./models/ggml-tiny.en.bin")] - model: String, - - #[arg(long, default_value = "8")] - threads: i32, - - #[arg(long, default_value = "5")] - stream_step: u64, - #[arg(long, default_value = "0.6")] - stream_retain: f32, - #[arg(long, default_value = "0.3")] - stream_head: f32, - #[arg(long, default_value = "0.3")] - stream_tail: f32, - - wav: Option, - - #[arg(long, default_value = "false")] - debug: bool, -} - -fn main() { - let flags = Flags::parse(); - - let w = new_whisper_service( - flags.model, - flags.threads, - flags.stream_head, - flags.stream_tail, - |result: Result| { - match result { - Ok(whispered) => { - eprintln!("{}: {:?}", chrono::Local::now(), whispered); - println!("{}", whispered.to_string()); - }, - Err(msg) => { eprintln!("Error whispering: {}", msg); }, - }; - }, - ).unwrap(); - let stream_retain = (flags.stream_retain * 16_000.0) as usize; - let stream_step = Duration::new(flags.stream_step, 0); - match flags.wav { - Some(wav) => { - let (header, data) = wav::read( - &mut std::fs::File::open(wav).expect("failed to open $WAV"), - ).expect("failed to decode $WAV"); - assert!(header.channel_count == 1); - assert!(header.sampling_rate == 16_000); - let data16 = data.as_sixteen().expect("wav is not 32bit floats"); - let audio_data = &whisper_rs::convert_integer_to_float_audio(&data16); - - w.transcribe(&audio_data); - }, - None => { - match &flags.debug { - true => { File::create("/tmp/page.rawf32audio").unwrap(); }, - false => {}, - }; - let mut buffer = vec![]; - let mut last = Instant::now(); - new_listener().listen(move |data: Vec| { - data.iter().for_each(|x| buffer.push(*x)); - if Instant::now() - last > stream_step { - w.transcribe_async(&buffer).unwrap(); - - match &flags.debug { - true => { - let mut f = File::options().append(true).open("/tmp/page.rawf32audio").unwrap(); - let mut wav_data = vec![]; - for i in buffer.iter() { - for j in i.to_le_bytes() { - wav_data.push(j); - } - } - f.write_all(wav_data.as_slice()).unwrap(); - }, - false => {}, - }; - - for i in 0..stream_retain { - buffer[i] = buffer[buffer.len() - stream_retain + i]; - } - buffer.truncate(stream_retain); - last = Instant::now(); - } - }); - }, - }; -} - -struct WhisperService { - jobs: std::sync::mpsc::SyncSender, -} - -fn new_whisper_service(model_path: String, threads: i32, stream_head: f32, stream_tail: f32, handler_fn: F) -> Result where F: FnMut(Result) + Send + 'static { - match new_whisper_engine(model_path, threads) { - Ok(engine) => { - let mut whisper = new_whisper_impl(engine, stream_head, stream_tail, handler_fn); - let (send, recv) = std::sync::mpsc::sync_channel(100); - thread::spawn(move || { whisper.transcribe_asyncs(recv); }); - Ok(WhisperService{jobs: send}) - }, - Err(msg) => Err(format!("failed to initialize engine: {}", msg)), - } -} - -impl WhisperService { - fn transcribe(&self, data: &Vec) { - let (send, recv) = std::sync::mpsc::sync_channel(0); - self._transcribe_async(data, Some(send)).unwrap(); - recv.recv().unwrap(); - } - - fn transcribe_async(&self, data: &Vec) -> Result<(), String> { - self._transcribe_async(data, None) - } - - fn _transcribe_async(&self, data: &Vec, ack: Option>) -> Result<(), String> { - match self.jobs.try_send(AWhisper{ - data: data.clone().to_vec(), - ack: ack, - }) { - Ok(_) => Ok(()), - Err(msg) => Err(format!("failed to enqueue transcription: {}", msg)), - } - } -} - -struct WhisperImpl { - engine: WhisperEngine, - stream_head: f32, - stream_tail: f32, - handler_fn: Option) + Send + 'static>> -} - -fn new_whisper_impl(engine: WhisperEngine, stream_head: f32, stream_tail: f32, handler_fn: F) -> WhisperImpl where F: FnMut(Result) + Send + 'static { - WhisperImpl { - engine: engine, - stream_head: stream_head, - stream_tail: stream_tail, - handler_fn: Some(Box::new(handler_fn)), - } -} - -impl WhisperImpl { - fn transcribe_asyncs(&mut self, recv: std::sync::mpsc::Receiver) { - loop { - match recv.recv() { - Ok(job) => { - let result = self.transcribe(&job).is_ok(); - match job.ack { - Some(ack) => { - ack.send(result).unwrap(); - }, - None => (), - }; - } - Err(_) => return, - }; - } - } - - fn transcribe(&mut self, a_whisper: &AWhisper) -> Result<(), ()> { - match self.engine.transcribe(&a_whisper.data) { - Ok(result) => { - self.on_success(&result); - Ok(()) - }, - Err(msg) => { - self.on_error(msg.to_string()); - Err(()) - }, - } - } - - fn on_success(&mut self, whispered: &Whispered) { - let result = whispered - .after(&(self.stream_head * 100.0)) - .before(&(self.stream_tail * 100.0)); - (self.handler_fn.as_mut().unwrap())(Ok(result)); - } - - fn on_error(&mut self, msg: String) { - (self.handler_fn.as_mut().unwrap())(Err(format!("failed to transcribe: {}", &msg))); - } -} - -struct WhisperEngine { - ctx: WhisperContext, - threads: i32, -} - -fn new_whisper_engine(model_path: String, threads: i32) -> Result { - match WhisperContext::new(&model_path) { - Ok(ctx) => Ok(WhisperEngine{ctx: ctx, threads: threads}), - Err(msg) => Err(format!("failed to load {}: {}", model_path, msg)), - } -} - -impl WhisperEngine { - fn transcribe(&self, data: &Vec) -> Result { - let mut params = FullParams::new(SamplingStrategy::Greedy { best_of: 0 }); - params.set_no_context(true); - params.set_n_threads(self.threads); - params.set_translate(false); - params.set_detect_language(false); - params.set_language(Some("en")); - params.set_print_special(false); - params.set_print_progress(false); - params.set_print_realtime(false); - params.set_print_timestamps(false); - - let mut state = self.ctx.create_state()?; - state.full(params, &data[..])?; - - let mut result = new_whispered(); - let num_segments = state.full_n_segments()?; - for i in 0..num_segments { - let data = state.full_get_segment_text(i)?; - let start = state.full_get_segment_t0(i)?; - let stop = state.full_get_segment_t1(i)?; - result.push(data, start, stop); - } - - Ok(result) - } -} - -struct AWhisper { - data: Vec, - ack: Option>, -} - -#[derive(Clone, Debug)] -struct Whispered { - data: Vec, -} - -#[derive(Clone, Debug)] -struct AWhispered { - data: String, - offset: i64, - length: i64, -} - -fn new_whispered() -> Whispered { - Whispered{data: vec![]} -} - -fn new_a_whispered(data: String, start: i64, stop: i64) -> AWhispered { - AWhispered{ - data: data, - offset: start.clone(), - length: stop - start, - } -} - -impl Whispered { - fn to_string(&self) -> String { - let mut result = "".to_string(); - for i in 0..self.data.len() { - result = format!("{} {}", result, &self.data[i].data); - } - result - } - - fn after(&self, t: &f32) -> Whispered { - let mut result = new_whispered(); - self.data - .iter() - .filter(|x| x.offset as f32 >= *t) - .for_each(|x| result.data.push(x.clone())); - result - } - - fn before(&self, t: &f32) -> Whispered { - let mut result = new_whispered(); - let end = match self.data.iter().map(|x| x.offset + x.length).max() { - Some(x) => x, - None => 1, - }; - let t = (end as f32) - *t; - self.data - .iter() - .filter(|x| ((x.offset) as f32) <= t) - .for_each(|x| result.data.push(x.clone())); - result - } - - fn push(&mut self, data: String, start: i64, stop: i64) { - let words: Vec<_> = data.split_whitespace().collect(); - let per_word = (stop - start) / (words.len() as i64); - for i in 0..words.len() { - let start = (i as i64) * per_word; - let stop = start.clone() + per_word; - self.data.push(new_a_whispered(words[i].to_string(), start, stop)); - } - } -} - -struct Listener { -} - -fn new_listener() -> Listener { - Listener{} -} - -impl Listener { - fn listen(self, mut cb: impl FnMut(Vec)) { - let (send, recv) = std::sync::mpsc::sync_channel(100); - thread::spawn(move || { self._listen(send); }); - loop { - match recv.recv() { - Ok(msg) => cb(msg), - Err(_) => return, - }; - } - } - - fn _listen(self, send: std::sync::mpsc::SyncSender>) { - let host = cpal::default_host(); - let device = host.default_input_device().unwrap(); - let cfg = device.supported_input_configs() - .unwrap() - .filter(|x| x.sample_format() == cpal::SampleFormat::F32) - .nth(0) - .unwrap() - .with_max_sample_rate(); - - let downsample_ratio = cfg.channels() as f32 * (cfg.sample_rate().0 as f32 / 16_000.0); - let stream = device.build_input_stream( - &cfg.clone().into(), - move |data: &[f32], _: &cpal::InputCallbackInfo| { - let mut downsampled_data = vec![]; - for i in 0..(data.len() as f32 / downsample_ratio) as usize { - let mut upsampled = i as f32 * downsample_ratio; - if upsampled > (data.len()-1) as f32 { - upsampled = (data.len()-1) as f32 - } - downsampled_data.push(data[upsampled as usize]); - } - match send.try_send(downsampled_data) { - Ok(_) => (), - Err(msg) => eprintln!("failed to ingest audio: {}", msg), - }; - }, - move |err| { - eprintln!("input error: {}", err) - }, - None, - ).unwrap(); - stream.play().unwrap(); - - eprintln!("listening on {}", device.name().unwrap()); - let mut signals = Signals::new(&[SIGINT]).unwrap(); - for sig in signals.forever() { - eprintln!("sig {}", sig); - break; - } - stream.pause().unwrap(); - } -}