Neur0toxine/atranscoder-rpc
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simplify the code (1)

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This commit is contained in:
Pavel 2024-05-25 23:17:54 +03:00
parent 96fd9de230
commit d1331462a6
2 changed files with 62 additions and 123 deletions
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52
src/server.rs
View File

@ -40,10 +40,7 @@ impl Server {
.layer(TraceLayer::new_for_http());
tracing::info!("listening on {addr}");
let listener = match TcpListener::bind(addr).await {
Ok(listen) => listen,
Err(err) => return Err(err),
};
let listener = TcpListener::bind(addr).await?;
axum::serve(listener, app).await
}
}
@ -53,26 +50,21 @@ async fn enqueue_file(
TypedMultipart(req): TypedMultipart<ConvertRequest>,
) -> (StatusCode, Json<ConvertResponse>) {
let task_id = Uuid::new_v4();
let input = Path::new(&server.work_dir).join(format!("{}.in.atranscoder", task_id.to_string()));
let output =
Path::new(&server.work_dir).join(format!("{}.out.atranscoder", task_id.to_string()));
let input = Path::new(&server.work_dir).join(format!("{}.in.atranscoder", task_id));
let output = Path::new(&server.work_dir).join(format!("{}.out.atranscoder", task_id));
let file = req.file;
match file.contents.persist(input.clone()) {
Ok(_) => {
let input_path = input.to_str();
let output_path = output.to_str();
if input_path.is_none() || output_path.is_none() {
return (
StatusCode::INTERNAL_SERVER_ERROR,
Json::from(ConvertResponse {
id: None,
error: Some(String::from("Input or output paths are not correct")),
}),
);
}
let input_path = match input.to_str() {
Some(path) => path,
None => return error_response("Invalid input path"),
};
let output_path = match output.to_str() {
Some(path) => path,
None => return error_response("Invalid output path"),
};
let task = Task::new(
task_id,
@ -84,8 +76,8 @@ async fn enqueue_file(
req.sample_rate,
req.channel_layout,
req.upload_url,
input_path.unwrap().to_string(),
output_path.unwrap().to_string(),
input_path.to_string(),
output_path.to_string(),
);
// Enqueue the task to the thread pool
@ -99,12 +91,16 @@ async fn enqueue_file(
}),
)
}
Err(_) => (
StatusCode::INTERNAL_SERVER_ERROR,
Json::from(ConvertResponse {
id: Some(task_id.to_string()),
error: Some(String::from("Cannot save the file")),
}),
),
Err(_) => error_response("Cannot save the file"),
}
}
fn error_response(msg: &str) -> (StatusCode, Json<ConvertResponse>) {
(
StatusCode::INTERNAL_SERVER_ERROR,
Json::from(ConvertResponse {
id: None,
error: Some(msg.to_string()),
}),
)
}

123
src/transcoder.rs
View File

@ -34,27 +34,18 @@ impl Transcoder {
let input = ictx
.streams()
.best(media::Type::Audio)
.expect("could not find best audio stream");
.ok_or("could not find best audio stream")?;
let context = codec::context::Context::from_parameters(input.parameters())?;
let mut decoder = match context.decoder().audio() {
Ok(val) => val,
Err(err) => {
return Err(
format!("couldn't find decoder for input file: {}", err.to_string()).into(),
)
}
};
let codec = match ffmpeg::encoder::find_by_name(&*params.codec) {
None => return Err(format!("couldn't find codec with name: {}", params.codec).into()),
Some(val) => match val.audio() {
Ok(val) => val,
Err(err) => return Err(err.into()),
},
};
let global = octx
.format()
.flags()
.contains(format::flag::Flags::GLOBAL_HEADER);
let mut decoder = context.decoder().audio().map_err(|err| {
format!("couldn't find decoder for input file: {}", err)
})?;
let codec = ffmpeg::encoder::find_by_name(&*params.codec)
.ok_or_else(|| format!("couldn't find codec with name: {}", params.codec))?
.audio()?;
let global = octx.format().flags().contains(format::flag::Flags::GLOBAL_HEADER);
decoder.set_parameters(input.parameters())?;
@ -74,46 +65,28 @@ impl Transcoder {
encoder.set_rate(sample_rate);
encoder.set_channel_layout(params.channel_layout);
#[cfg(not(feature = "ffmpeg_7_0"))]
{
encoder.set_channels(params.channel_layout.channels());
}
encoder.set_format(
codec
.formats()
.expect(
format!(
"failed to get supported formats for codec: {}",
codec.name()
)
.as_str(),
)
.ok_or_else(|| format!("failed to get supported formats for codec: {}", codec.name()))?
.next()
.unwrap(),
.ok_or("no supported formats found for codec")?,
);
if params.bit_rate > 0 {
encoder.set_bit_rate(params.bit_rate);
} else {
encoder.set_bit_rate(decoder.bit_rate());
}
if params.max_bit_rate > 0 {
encoder.set_max_bit_rate(params.bit_rate);
} else {
encoder.set_max_bit_rate(decoder.max_bit_rate());
}
encoder.set_bit_rate(if params.bit_rate > 0 { params.bit_rate } else { decoder.bit_rate() });
encoder.set_max_bit_rate(if params.max_bit_rate > 0 { params.max_bit_rate } else { decoder.max_bit_rate() });
encoder.set_time_base((1, sample_rate));
output.set_time_base((1, sample_rate));
let in_time_base = decoder.time_base();
let encoder = encoder.open_as(codec)?;
output.set_parameters(&encoder);
let filter = filter("anull", &decoder, &encoder)?;
let in_time_base = decoder.time_base();
let out_time_base = output.time_base();
let filter = filter_graph("anull", &decoder, &encoder)?;
Ok(Transcoder {
stream: input.index(),
@ -122,7 +95,7 @@ impl Transcoder {
decoder,
encoder,
in_time_base,
out_time_base,
out_time_base: output.time_base(),
})
}
@ -143,9 +116,8 @@ impl Transcoder {
encoded.set_stream(0);
encoded.rescale_ts(self.in_time_base, self.out_time_base);
match encoded.write_interleaved(octx) {
Err(err) => return Err(err.into()),
Ok(_) => (),
if let Err(err) = encoded.write_interleaved(octx) {
return Err(err.into());
}
}
Ok(())
@ -165,23 +137,14 @@ impl Transcoder {
) -> Result<(), Box<dyn Error>> {
let mut filtered = frame::Audio::empty();
loop {
let mut ctx: ffmpeg::filter::Context = match self.filter.get("out") {
None => return Err(Box::from("cannot get context from filter")),
Some(val) => val,
};
let mut ctx = self.filter.get("out").ok_or("cannot get context from filter")?;
if !ctx.sink().frame(&mut filtered).is_ok() {
return Err(Box::from("frame is suddenly invalid, stopping..."));
if ctx.sink().frame(&mut filtered).is_err() {
return Err("frame is suddenly invalid, stopping...".into());
}
match self.send_frame_to_encoder(&filtered) {
Err(err) => return Err(err.into()),
Ok(_) => (),
};
match self.receive_and_process_encoded_packets(octx) {
Err(err) => return Err(err.into()),
Ok(_) => (),
}
self.send_frame_to_encoder(&filtered)?;
self.receive_and_process_encoded_packets(octx)?;
}
}
@ -189,17 +152,11 @@ impl Transcoder {
&mut self,
packet: &ffmpeg::Packet,
) -> Result<(), Box<dyn Error>> {
match self.decoder.send_packet(packet) {
Err(err) => return Err(err.into()),
Ok(_) => Ok(()),
}
self.decoder.send_packet(packet).map_err(|err| err.into())
}
pub(crate) fn send_eof_to_decoder(&mut self) -> Result<(), Box<dyn Error>> {
match self.decoder.send_eof() {
Err(err) => return Err(err.into()),
Ok(_) => Ok(()),
}
self.decoder.send_eof().map_err(|err| err.into())
}
pub(crate) fn receive_and_process_decoded_frames(
@ -211,17 +168,13 @@ impl Transcoder {
let timestamp = decoded.timestamp();
decoded.set_pts(timestamp);
self.add_frame_to_filter(&decoded);
match self.get_and_process_filtered_frames(octx) {
Err(err) => return Err(err.into()),
Ok(_) => (),
}
self.get_and_process_filtered_frames(octx)?;
}
Ok(())
}
}
fn filter(
fn filter_graph(
spec: &str,
decoder: &codec::decoder::Audio,
encoder: &codec::encoder::Audio,
@ -239,13 +192,10 @@ fn filter(
filter.add(&filter::find("abuffer").unwrap(), "in", &args)?;
filter.add(&filter::find("abuffersink").unwrap(), "out", "")?;
{
let mut out = filter.get("out").unwrap();
out.set_sample_format(encoder.format());
out.set_channel_layout(encoder.channel_layout());
out.set_sample_rate(encoder.rate());
}
filter.output("in", 0)?.input("out", 0)?.parse(spec)?;
filter.validate()?;
@ -253,15 +203,8 @@ fn filter(
println!("{}", filter.dump());
if let Some(codec) = encoder.codec() {
if !codec
.capabilities()
.contains(codec::capabilities::Capabilities::VARIABLE_FRAME_SIZE)
{
filter
.get("out")
.unwrap()
.sink()
.set_frame_size(encoder.frame_size());
if !codec.capabilities().contains(codec::capabilities::Capabilities::VARIABLE_FRAME_SIZE) {
filter.get("out").unwrap().sink().set_frame_size(encoder.frame_size());
}
}