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gstreamer-1.0 backend: Version updates and squelch warnings

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This commit is contained in:
Sean McNamara 2020-04-06 23:29:29 -04:00
parent c5c455236e
commit f192bd1079
2 changed files with 40 additions and 47 deletions
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14
playback/Cargo.toml
View file

@ -22,18 +22,18 @@ log = "0.4"
byteorder = "1.3" byteorder = "1.3"
shell-words = "0.1.0" shell-words = "0.1.0"
alsa = { version = "0.2.1", optional = true } alsa = { version = "0.2", optional = true }
portaudio-rs = { version = "0.3.0", optional = true } portaudio-rs = { version = "0.3", optional = true }
libpulse-sys = { version = "0.0.0", optional = true } libpulse-sys = { version = "0.0.0", optional = true }
jack = { version = "0.5.3", optional = true } jack = { version = "0.5", optional = true }
libc = { version = "0.2", optional = true } libc = { version = "0.2", optional = true }
rodio = { version = "0.9", optional = true, default-features = false } rodio = { version = "0.9", optional = true, default-features = false }
cpal = { version = "0.8", optional = true } cpal = { version = "0.8", optional = true }
sdl2 = { version = "0.32", optional = true } sdl2 = { version = "0.32", optional = true }
gstreamer = { version = "0.15.0", optional = true } gstreamer = { version = "0.15", optional = true }
gstreamer-app = { version = "0.15.0", optional = true } gstreamer-app = { version = "0.15", optional = true }
glib = { version = "0.9.0", optional = true } glib = { version = "0.9", optional = true }
zerocopy = { version = "0.2.8", optional = true } zerocopy = { version = "0.2", optional = true }
[features] [features]
alsa-backend = ["alsa"] alsa-backend = ["alsa"]

31
playback/src/audio_backend/gstreamer.rs
View file

@ -1,20 +1,17 @@
use super::{Open, Sink}; use super::{Open, Sink};
use std::{io, thread, time, process::exit}; use std::{io, thread};
use std::sync::mpsc::{sync_channel, SyncSender}; use std::sync::mpsc::{sync_channel, SyncSender};
use gst::prelude::*; use gst::prelude::*;
use gst::*; use gst::*;
use gst_app::*;
use glib::MainLoop;
use zerocopy::*; use zerocopy::*;
pub struct GstreamerSink { pub struct GstreamerSink {
tx: SyncSender<Vec<u8>>, tx: SyncSender<Vec<u8>>
pipeline: gst::Pipeline
} }
impl Open for GstreamerSink { impl Open for GstreamerSink {
fn open(device: Option<String>) -> GstreamerSink { fn open(device: Option<String>) -> GstreamerSink {
gst::init(); 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_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_rest = r#" ! audioconvert ! autoaudiosink"#;
let pipeline_str : String = match device { let pipeline_str : String = match device {
@ -26,10 +23,10 @@ impl Open for GstreamerSink {
gst::init().unwrap(); gst::init().unwrap();
let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error"); 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 mut bus = pipeline.get_bus().expect("Couldn't get bus from pipeline"); let bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
let mut mainloop = glib::MainLoop::new(None, false); let mainloop = glib::MainLoop::new(None, false);
let mut appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline"); let appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
let mut appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldn't cast AppSrc element at runtime!"); 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 bufferpool = gst::BufferPool::new();
let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed"); let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
let mut conf = bufferpool.get_config(); let mut conf = bufferpool.get_config();
@ -40,23 +37,21 @@ impl Open for GstreamerSink {
let (tx, rx) = sync_channel::<Vec<u8>>(128); let (tx, rx) = sync_channel::<Vec<u8>>(128);
thread::spawn(move || { thread::spawn(move || {
for data in rx { for data in rx {
let mut buffer = bufferpool.acquire_buffer(None); let buffer = bufferpool.acquire_buffer(None);
if(!buffer.is_err()) { if !buffer.is_err() {
let mut okbuffer = buffer.unwrap(); let mut okbuffer = buffer.unwrap();
let mutbuf = okbuffer.make_mut(); let mutbuf = okbuffer.make_mut();
mutbuf.set_size(data.len()); mutbuf.set_size(data.len());
mutbuf.copy_from_slice(0, data.as_bytes()); mutbuf.copy_from_slice(0, data.as_bytes()).expect("Failed to copy from slice");
let eat = appsrc.push_buffer(okbuffer); let _eat = appsrc.push_buffer(okbuffer);
} }
} }
}); });
thread::spawn(move || { thread::spawn(move || {
unsafe {
let thread_mainloop = mainloop; let thread_mainloop = mainloop;
let watch_mainloop = thread_mainloop.clone(); let watch_mainloop = thread_mainloop.clone();
bus.add_watch(move |_, msg| { bus.add_watch(move |_, msg| {
use gst::MessageView;
match msg.view() { match msg.view() {
MessageView::Eos(..) => watch_mainloop.quit(), MessageView::Eos(..) => watch_mainloop.quit(),
MessageView::Error(err) => { MessageView::Error(err) => {
@ -75,14 +70,12 @@ impl Open for GstreamerSink {
}) })
.expect("Failed to add bus watch"); .expect("Failed to add bus watch");
thread_mainloop.run(); 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 { GstreamerSink {
tx: tx, tx: tx
pipeline: pipeline
} }
} }
} }