♻️ refactor: extract AudioOutput
_
parent
3b45f4309f
commit
f7c38d88de
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@ -87,9 +87,9 @@ dependencies = [
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[[package]]
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name = "bitflags"
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version = "1.2.1"
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version = "1.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
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checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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[[package]]
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name = "bumpalo"
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@ -156,6 +156,15 @@ dependencies = [
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"libloading",
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]
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[[package]]
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name = "cmake"
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version = "0.1.46"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b7b858541263efe664aead4a5209a4ae5c5d2811167d4ed4ee0944503f8d2089"
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dependencies = [
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"cc",
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]
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[[package]]
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name = "combine"
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version = "4.6.2"
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@ -287,6 +296,26 @@ dependencies = [
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"vcpkg",
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]
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[[package]]
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name = "fltk"
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version = "1.2.15"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9480f6742b6ba50cbfb8e016c987f8d3e2faa79c0624e22f934d80c747c62e18"
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dependencies = [
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"bitflags",
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"fltk-sys",
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"paste",
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]
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[[package]]
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name = "fltk-sys"
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version = "1.2.14"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b6dc0e345a8288be36989fccd9796685b35dc63378c08fd7548100e1109a4ccb"
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dependencies = [
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"cmake",
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]
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[[package]]
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name = "fnv"
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version = "1.0.7"
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@ -431,15 +460,6 @@ version = "2.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
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[[package]]
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name = "memoffset"
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version = "0.6.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "59accc507f1338036a0477ef61afdae33cde60840f4dfe481319ce3ad116ddf9"
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dependencies = [
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"autocfg",
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]
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[[package]]
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name = "music_player"
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version = "0.1.0"
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@ -448,6 +468,7 @@ dependencies = [
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"byteorder",
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"cpal",
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"ffmpeg-next",
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"fltk",
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"tracing",
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"tracing-subscriber",
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]
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@ -526,15 +547,14 @@ checksum = "c44922cb3dbb1c70b5e5f443d63b64363a898564d739ba5198e3a9138442868d"
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[[package]]
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name = "nix"
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version = "0.20.2"
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version = "0.20.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f5e06129fb611568ef4e868c14b326274959aa70ff7776e9d55323531c374945"
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checksum = "fa9b4819da1bc61c0ea48b63b7bc8604064dd43013e7cc325df098d49cd7c18a"
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dependencies = [
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"bitflags",
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"cc",
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"cfg-if 1.0.0",
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"libc",
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"memoffset",
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]
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[[package]]
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@ -653,6 +673,12 @@ dependencies = [
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"winapi",
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]
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[[package]]
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name = "paste"
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version = "1.0.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0744126afe1a6dd7f394cb50a716dbe086cb06e255e53d8d0185d82828358fb5"
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[[package]]
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name = "peeking_take_while"
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version = "0.1.2"
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@ -10,5 +10,6 @@ anyhow = "1.0.45"
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byteorder = "1.4.3"
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cpal = "0.13.4"
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ffmpeg-next = "4.4.0"
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fltk = "1.2.15"
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tracing = "0.1.29"
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tracing-subscriber = { version = "0.3.1", features = ["env-filter"] }
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205
src/main.rs
205
src/main.rs
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@ -22,10 +22,27 @@ use anyhow::{
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use cpal::traits::{
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DeviceTrait,
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HostTrait,
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StreamTrait,
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};
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use fltk::{
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app,
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button::Button,
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enums::CallbackTrigger,
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frame::Frame,
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group::Flex,
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prelude::*,
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window::Window,
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};
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mod decoder;
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#[derive (Clone, Copy)]
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enum Message {
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Play,
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Pause,
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}
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fn main () -> Result <()> {
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let args: Vec <_> = std::env::args ().collect ();
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@ -33,6 +50,7 @@ fn main () -> Result <()> {
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None => bail! ("First argument must be a subcommand like `play`"),
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Some ("debug-dump") => cmd_debug_dump (&args [1..]),
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Some ("debug-pipe") => cmd_debug_pipe (&args [1..]),
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Some ("gui") => cmd_gui (&args [1..]),
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Some ("play") => cmd_play (&args [1..]),
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Some (_) => bail! ("Unrecognized subcommand"),
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}
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@ -84,6 +102,47 @@ pub struct SharedState {
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pub quit: bool,
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}
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fn cmd_gui (args: &[String]) -> Result <()> {
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let (fltk_tx, fltk_rx) = app::channel::<Message> ();
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let app = app::App::default ();
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let window_title = "Music Player".to_string ();
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let mut wind = Window::new (100, 100, 600, 600, None)
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.with_label (&window_title);
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wind.make_resizable (true);
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let mut row = Flex::default ().row ().size_of_parent ();
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let mut but_play = Button::default ().with_label ("▶️");
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but_play.set_trigger (CallbackTrigger::Release);
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but_play.emit (fltk_tx, Message::Play);
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row.set_size (&mut but_play, 30);
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let mut but_pause = Button::default ().with_label ("■");
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but_pause.set_trigger (CallbackTrigger::Release);
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but_pause.emit (fltk_tx, Message::Pause);
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row.set_size (&mut but_pause, 30);
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row.end ();
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wind.end ();
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wind.show ();
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while app.wait () {
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match fltk_rx.recv () {
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Some (Message::Play) => {
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tracing::info! ("play");
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},
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Some (Message::Pause) => {
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tracing::info! ("pause");
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},
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None => (),
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}
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}
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Ok (())
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}
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fn cmd_play (args: &[String]) -> Result <()> {
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tracing_subscriber::fmt::init ();
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@ -103,7 +162,13 @@ fn cmd_play (args: &[String]) -> Result <()> {
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let mut decoder = decoder::Decoder::new (&filename)?;
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'one_file: loop {
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// tracing::trace! ("decode thread parking");
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let frame = match decoder.next ()? {
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Some (x) => x,
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None => {
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tracing::debug! ("Decoder thread finished a file");
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break 'one_file;
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},
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};
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let mut decoder_state = cvar.wait_while (lock.lock ().unwrap (), |decoder_state| {
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decoder_state.pcm_buffers.samples_available () >= 12_000 &&
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@ -114,80 +179,17 @@ fn cmd_play (args: &[String]) -> Result <()> {
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break 'many_files;
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}
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//dbg! (resampler.delay ());
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let pcm_buffers = &mut decoder_state.pcm_buffers;
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while pcm_buffers.samples_available () < 12_000 {
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// tracing::trace! ("Decoder is trying to work...");
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match decoder.next ()? {
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Some (frame) => pcm_buffers.produce_bytes (frame.data ().into ()),
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None => {
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tracing::info! ("Finished decoding file");
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break 'one_file;
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}
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}
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}
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decoder_state.pcm_buffers.produce_bytes (frame.data ().into ());
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}
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}
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Ok::<_, anyhow::Error> (())
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});
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let host = cpal::default_host ();
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let device = host.default_output_device ().ok_or_else (|| anyhow! ("can't open cpal device"))?;
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let mut supported_configs_range = device.supported_output_configs ()?
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.filter (|c| c.channels () == 2 && c.sample_format () == cpal::SampleFormat::F32);
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let config = supported_configs_range.next ()
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.ok_or_else (|| anyhow! ("can't get stereo f32 audio output"))?
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.with_sample_rate (cpal::SampleRate (decoder::SAMPLE_RATE))
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.config ();
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let pcm_quit = Arc::new ((Mutex::new (false), Condvar::new ()));
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let pcm_quit2 = Arc::clone (&pcm_quit);
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let stream = device.build_output_stream (
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&config,
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move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
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let (lock, cvar) = &*pair;
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let time_start = Instant::now ();
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let mut decoder_state = match lock.lock () {
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Ok (x) => x,
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Err (_) => return,
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};
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let time_stop = Instant::now ();
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let dur = time_stop - time_start;
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if dur.as_micros () > 2 {
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dbg! (dur.as_micros ());
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}
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let pcm_buffers = &mut decoder_state.pcm_buffers;
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if ! pcm_buffers.consume_exact (data) {
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tracing::warn! ("PCM buffer underflow");
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for x in data {
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*x = 0.0;
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}
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let (lock, cvar) = &*pcm_quit;
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let mut pcm_quit = lock.lock ().unwrap ();
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*pcm_quit = true;
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cvar.notify_one ();
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}
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cvar.notify_one ();
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},
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move |_err| {
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// react to errors here.
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},
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);
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// sleep (std::time::Duration::from_secs (3 * 60 + 40));
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let audio_output = AudioOutput::new (pcm_quit, pair)?;
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tracing::debug! ("Joining decoder thread...");
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@ -204,7 +206,7 @@ fn cmd_play (args: &[String]) -> Result <()> {
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let (lock, cvar) = &*pcm_quit2;
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let _ = cvar.wait (lock.lock ().unwrap ()).unwrap ();
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drop (stream);
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drop (audio_output);
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sleep (Duration::from_secs (1));
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@ -212,6 +214,75 @@ fn cmd_play (args: &[String]) -> Result <()> {
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Ok (())
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}
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struct AudioOutput {
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host: cpal::Host,
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device: cpal::Device,
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stream: cpal::Stream,
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}
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impl AudioOutput {
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pub fn new (
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pcm_quit: Arc <(Mutex <bool>, Condvar)>,
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pair: Arc <(Mutex <SharedState>, Condvar)>,
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) -> Result <Self> {
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let host = cpal::default_host ();
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let device = host.default_output_device ().ok_or_else (|| anyhow! ("can't open cpal device"))?;
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let mut supported_configs_range = device.supported_output_configs ()?
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.filter (|c| c.channels () == 2 && c.sample_format () == cpal::SampleFormat::F32);
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let config = supported_configs_range.next ()
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.ok_or_else (|| anyhow! ("can't get stereo f32 audio output"))?
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.with_sample_rate (cpal::SampleRate (decoder::SAMPLE_RATE))
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.config ();
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let stream = device.build_output_stream (
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&config,
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move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
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let (lock, cvar) = &*pair;
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let time_start = Instant::now ();
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let mut decoder_state = match lock.lock () {
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Ok (x) => x,
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Err (_) => return,
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};
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let time_stop = Instant::now ();
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let dur = time_stop - time_start;
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if dur.as_micros () > 100 {
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tracing::warn! ("PCM thread waited {} us for a lock", dur.as_micros ());
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}
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let pcm_buffers = &mut decoder_state.pcm_buffers;
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if ! pcm_buffers.consume_exact (data) {
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tracing::warn! ("PCM buffer underflow");
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for x in data {
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*x = 0.0;
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}
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let (lock, cvar) = &*pcm_quit;
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let mut pcm_quit = lock.lock ().unwrap ();
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*pcm_quit = true;
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cvar.notify_one ();
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}
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cvar.notify_one ();
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},
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move |_err| {
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// react to errors here.
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},
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)?;
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Ok (Self {
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host,
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device,
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stream,
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})
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}
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}
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#[cfg (test)]
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mod test {
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use super::*;
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