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gstreamer-backend: rustfmt.

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This commit is contained in:
Sean McNamara 2020-04-06 23:54:05 -04:00
parent 1e9a52bd6e
commit e7093cb0bc
2 changed files with 35 additions and 19 deletions
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50
playback/src/audio_backend/gstreamer.rs
View file

@ -1,14 +1,14 @@
use super::{Open, Sink};
use std::{io, thread};
use std::sync::mpsc::{sync_channel, SyncSender};
use gst::prelude::*;
use gst::*;
use std::sync::mpsc::{sync_channel, SyncSender};
use std::{io, thread};
use zerocopy::*;
#[allow(dead_code)]
pub struct GstreamerSink {
tx: SyncSender<Vec<u8>>,
pipeline: gst::Pipeline
pipeline: gst::Pipeline,
}
impl Open for GstreamerSink {
@ -16,25 +16,35 @@ impl Open for GstreamerSink {
gst::init().expect("Failed to init gstreamer!");
let pipeline_str_preamble = r#"appsrc caps="audio/x-raw,format=S16LE,layout=interleaved,channels=2,rate=44100" block=true max-bytes=4096 name=appsrc0 "#;
let pipeline_str_rest = r#" ! audioconvert ! autoaudiosink"#;
let pipeline_str : String = match device {
let pipeline_str: String = match device {
Some(x) => format!("{}{}", pipeline_str_preamble, x),
None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest)
None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest),
};
println!("Pipeline: {}", pipeline_str);
gst::init().unwrap();
let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error");
let pipeline = pipelinee.dynamic_cast::<gst::Pipeline>().expect("Couldn't cast pipeline element at runtime!");
let pipeline = pipelinee
.dynamic_cast::<gst::Pipeline>()
.expect("Couldn't cast pipeline element at runtime!");
let bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
let mainloop = glib::MainLoop::new(None, false);
let appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
let appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldn't cast AppSrc element at runtime!");
let appsrce: gst::Element = pipeline
.get_by_name("appsrc0")
.expect("Couldn't get appsrc from pipeline");
let appsrc: gst_app::AppSrc = appsrce
.dynamic_cast::<gst_app::AppSrc>()
.expect("Couldn't cast AppSrc element at runtime!");
let bufferpool = gst::BufferPool::new();
let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
let mut conf = bufferpool.get_config();
conf.set_params(Some(&appsrc_caps), 8192, 0, 0);
bufferpool.set_config(conf).expect("Couldn't configure the buffer pool");
bufferpool.set_active(true).expect("Couldn't activate buffer pool");
bufferpool
.set_config(conf)
.expect("Couldn't configure the buffer pool");
bufferpool
.set_active(true)
.expect("Couldn't activate buffer pool");
let (tx, rx) = sync_channel::<Vec<u8>>(128);
thread::spawn(move || {
@ -44,7 +54,9 @@ impl Open for GstreamerSink {
let mut okbuffer = buffer.unwrap();
let mutbuf = okbuffer.make_mut();
mutbuf.set_size(data.len());
mutbuf.copy_from_slice(0, data.as_bytes()).expect("Failed to copy from slice");
mutbuf
.copy_from_slice(0, data.as_bytes())
.expect("Failed to copy from slice");
let _eat = appsrc.push_buffer(okbuffer);
}
}
@ -67,18 +79,20 @@ impl Open for GstreamerSink {
}
_ => (),
};
glib::Continue(true)
})
.expect("Failed to add bus watch");
thread_mainloop.run();
});
pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
pipeline
.set_state(gst::State::Playing)
.expect("Unable to set the pipeline to the `Playing` state");
GstreamerSink {
tx: tx,
pipeline: pipeline
pipeline: pipeline,
}
}
}
@ -92,8 +106,10 @@ impl Sink for GstreamerSink {
}
fn write(&mut self, data: &[i16]) -> io::Result<()> {
// Copy expensively (in to_vec()) to avoid thread synchronization
let deighta : &[u8] = data.as_bytes();
self.tx.send(deighta.to_vec()).expect("tx send failed in write function");
let deighta: &[u8] = data.as_bytes();
self.tx
.send(deighta.to_vec())
.expect("tx send failed in write function");
Ok(())
}
}
}

4
playback/src/lib.rs
View file

@ -17,13 +17,13 @@ extern crate libpulse_sys;
#[cfg(feature = "jackaudio-backend")]
extern crate jack;
#[cfg(feature = "gstreamer-backend")]
extern crate glib;
#[cfg(feature = "gstreamer-backend")]
extern crate gstreamer as gst;
#[cfg(feature = "gstreamer-backend")]
extern crate gstreamer_app as gst_app;
#[cfg(feature = "gstreamer-backend")]
extern crate glib;
#[cfg(feature = "gstreamer-backend")]
extern crate zerocopy;
#[cfg(feature = "sdl-backend")]