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GUI is very much WIP but it does work

main
_ 2021-11-13 23:45:26 +00:00
parent f2484dda91
commit 10d3cd62c5
4 changed files with 383 additions and 85 deletions
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64
Cargo.lock generated
View File

@ -322,6 +322,17 @@ version = "1.0.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
[[package]]
name = "getrandom"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
dependencies = [
"cfg-if 1.0.0",
"libc",
"wasi",
]
[[package]]
name = "glob"
version = "0.3.0"
@ -469,6 +480,7 @@ dependencies = [
"cpal",
"ffmpeg-next",
"fltk",
"rand",
"tracing",
"tracing-subscriber",
]
@ -697,6 +709,12 @@ version = "0.3.22"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "12295df4f294471248581bc09bef3c38a5e46f1e36d6a37353621a0c6c357e1f"
[[package]]
name = "ppv-lite86"
version = "0.2.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed0cfbc8191465bed66e1718596ee0b0b35d5ee1f41c5df2189d0fe8bde535ba"
[[package]]
name = "proc-macro-crate"
version = "0.1.5"
@ -734,6 +752,46 @@ dependencies = [
"proc-macro2",
]
[[package]]
name = "rand"
version = "0.8.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
dependencies = [
"libc",
"rand_chacha",
"rand_core",
"rand_hc",
]
[[package]]
name = "rand_chacha"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
dependencies = [
"ppv-lite86",
"rand_core",
]
[[package]]
name = "rand_core"
version = "0.6.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
dependencies = [
"getrandom",
]
[[package]]
name = "rand_hc"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
dependencies = [
"rand_core",
]
[[package]]
name = "redox_syscall"
version = "0.2.10"
@ -966,6 +1024,12 @@ dependencies = [
"winapi-util",
]
[[package]]
name = "wasi"
version = "0.10.2+wasi-snapshot-preview1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
[[package]]
name = "wasm-bindgen"
version = "0.2.78"

1
Cargo.toml
View File

@ -11,5 +11,6 @@ byteorder = "1.4.3"
cpal = "0.13.4"
ffmpeg-next = "4.4.0"
fltk = "1.2.15"
rand = "0.8.4"
tracing = "0.1.29"
tracing-subscriber = { version = "0.3.1", features = ["env-filter"] }

6
src/decoder.rs
View File

@ -91,9 +91,9 @@ impl PcmBuffers {
}
pub struct Decoder {
pub input_ctx: DemuxContext,
pub decoder: DecodeContext,
pub resampler: ResamplingContext,
input_ctx: DemuxContext,
decoder: DecodeContext,
resampler: ResamplingContext,
best_stream_idx: usize,
dummy_frame: Option <FfAudioFrame>,

397
src/main.rs
View File

@ -5,6 +5,7 @@ use std::{
Arc,
Condvar,
Mutex,
mpsc,
},
thread::{
self,
@ -36,11 +37,7 @@ use fltk::{
mod decoder;
#[derive (Clone, Copy)]
enum Message {
Play,
Pause,
}
const BUFFER_SIZE: usize = 5_000;
fn main () -> Result <()> {
let args: Vec <_> = std::env::args ().collect ();
@ -98,12 +95,68 @@ fn cmd_debug_pipe (args: &[String]) -> Result <()> {
#[derive (Default)]
pub struct SharedState {
pub pcm_buffers: decoder::PcmBuffers,
pub quit: bool,
}
struct Gui {
intend_to_play: bool,
can_decode: bool,
audio_is_streaming: bool,
trying_to_stream: bool,
but_pause: Button,
but_play: Button,
}
fn set_active <W: WidgetExt> (w: &mut W, b: bool) {
if b {
w.activate ();
}
else {
w.deactivate ();
}
}
impl Gui {
pub fn sync (&mut self) {
set_active (
&mut self.but_pause,
self.intend_to_play,
);
set_active (
&mut self.but_play,
! self.intend_to_play &&
self.can_decode
);
}
}
#[derive (Clone, Copy, Debug)]
enum Message {
AudioStreamStatus (bool),
DecoderStatus (bool),
RawPlay,
RawPause,
RawSet,
RawSkip,
}
fn cmd_gui (args: &[String]) -> Result <()> {
use std::io::BufRead;
tracing_subscriber::fmt::init ();
let playlist = {
let mut files = Vec::with_capacity (2000);
let file = File::open ("/home/user/music/playlist.m3u")?;
let reader = std::io::BufReader::new (file);
for line in reader.lines () {
files.push (line?);
}
files
};
let filenames: Vec <_> = args.iter ()
.skip (1)
.map (|s| s.to_string ())
@ -117,49 +170,146 @@ fn cmd_gui (args: &[String]) -> Result <()> {
.with_label (&window_title);
wind.make_resizable (true);
let mut row = Flex::default ().row ().size_of_parent ();
let mut col = Flex::default ().column ().size_of_parent ();
let mut but_play = Button::default ().with_label ("▶️");
but_play.set_trigger (CallbackTrigger::Release);
but_play.emit (fltk_tx, Message::Play);
row.set_size (&mut but_play, 30);
{
let mut row = Flex::default ().row ();
let mut label = Frame::default ().with_label ("Audio output");
let mut but_audio_play = Button::default ().with_label ("Play");
let mut but_audio_pause = Button::default ().with_label ("Pause");
row.set_size (&mut label, 100);
row.set_size (&mut but_audio_play, 100);
row.set_size (&mut but_audio_pause, 100);
but_audio_play.set_trigger (CallbackTrigger::Release);
but_audio_pause.set_trigger (CallbackTrigger::Release);
but_audio_play.emit (fltk_tx, Message::RawPlay);
but_audio_pause.emit (fltk_tx, Message::RawPause);
row.end ();
col.add (&row);
col.set_size (&mut row, 30);
}
let mut but_pause = Button::default ().with_label ("■");
but_pause.set_trigger (CallbackTrigger::Release);
but_pause.emit (fltk_tx, Message::Pause);
row.set_size (&mut but_pause, 30);
{
let mut row = Flex::default ().row ();
let mut label = Frame::default ().with_label ("Decoder");
let mut but_set = Button::default ().with_label ("Set");
let mut but_skip = Button::default ().with_label ("Skip");
row.set_size (&mut label, 100);
row.set_size (&mut but_set, 100);
row.set_size (&mut but_skip, 100);
but_set.set_trigger (CallbackTrigger::Release);
but_skip.set_trigger (CallbackTrigger::Release);
but_set.emit (fltk_tx, Message::RawSet);
but_skip.emit (fltk_tx, Message::RawSkip);
row.end ();
col.add (&row);
col.set_size (&mut row, 30);
}
row.end ();
col.end ();
wind.end ();
wind.show ();
/*
let mut gui = Gui {
can_decode: false,
audio_is_streaming: false,
intend_to_play: false,
trying_to_stream: false,
but_pause,
but_play,
};
let shared_state = Arc::new ((Mutex::new (SharedState::default ()), Condvar::new ()));
let pcm_quit = Arc::new ((Mutex::new (false), Condvar::new ()));
gui.sync ();
*/
let mut shared_state = SharedState::default ();
let silence = vec! [0; 12_000 * 4 * 2];
shared_state.pcm_buffers.produce_bytes (silence);
let thread_decoder = DecoderThread::new (Arc::clone (&shared_state), filenames);
let mut audio_output = AudioOutput::new (Arc::clone (&pcm_quit), Arc::clone (&shared_state))?;
let shared_state = Arc::new ((Mutex::new (shared_state), Condvar::new ()));
let thread_decoder = DecoderThread::new (
Arc::clone (&shared_state),
fltk_tx.clone (),
);
let mut audio_output = AudioOutput::new (
Arc::clone (&shared_state),
thread_decoder.tx.clone (),
fltk_tx.clone (),
)?;
// Doesn't work.
// audio_output.pause ()?;
/*
for filename in filenames {
//gui.can_decode = true;
thread_decoder.tx.send (MessageToDecoder::QueueFile (filename))?;
}
*/
// let mut play_queue = vec! [];
let mut current_file = None;
while app.wait () {
match fltk_rx.recv () {
Some (Message::Play) => {
tracing::info! ("play");
let msg = match fltk_rx.recv () {
None => continue,
Some (x) => x,
};
match msg {
Message::AudioStreamStatus (x) => {
},
Message::DecoderStatus (x) => {
if ! x {
tracing::info! ("Decoder ran dry");
current_file = None;
}
},
Message::RawPlay => {
audio_output.play ()?;
},
Some (Message::Pause) => {
tracing::info! ("pause");
Message::RawPause => {
audio_output.pause ()?;
},
None => (),
Message::RawSet => {
use rand::Rng;
let idx = rand::thread_rng ().gen_range (0..playlist.len ());
let filename = &playlist [idx];
tracing::info! ("Set decoder to {}", filename);
thread_decoder.tx.send (MessageToDecoder::SetFile (Some (format! ("/home/user/music/{}", filename))))?;
current_file = Some (filename);
},
Message::RawSkip => {
thread_decoder.tx.send (MessageToDecoder::SetFile (None))?;
},
}
}
tracing::info! ("Received FLTK quit signal");
audio_output.pause ()?;
tracing::debug! ("Joining decoder thread...");
thread_decoder.tx.send (MessageToDecoder::Quit)?;
thread_decoder.join ()?;
tracing::debug! ("Joining PCM thread...");
let (lock, cvar) = &*pcm_quit;
let _ = cvar.wait (lock.lock ().unwrap ()).unwrap ();
drop (audio_output);
tracing::info! ("Exiting cleanly.");
@ -167,6 +317,8 @@ fn cmd_gui (args: &[String]) -> Result <()> {
}
fn cmd_play (args: &[String]) -> Result <()> {
unimplemented! ();
/*
tracing_subscriber::fmt::init ();
let filenames: Vec <_> = args.iter ()
@ -174,68 +326,140 @@ fn cmd_play (args: &[String]) -> Result <()> {
.map (|s| s.to_string ())
.collect ();
// let (decoder_tx, decoder_rx) = mpsc::sync_channel (1);
let (main_tx, main_rx) = mpsc::sync_channel (1);
let shared_state = Arc::new ((Mutex::new (SharedState::default ()), Condvar::new ()));
let pcm_quit = Arc::new ((Mutex::new (false), Condvar::new ()));
let thread_decoder = DecoderThread::new (Arc::clone (&shared_state), filenames);
let audio_output = AudioOutput::new (Arc::clone (&pcm_quit), Arc::clone (&shared_state))?;
let thread_decoder = DecoderThread::new (
Arc::clone (&shared_state),
main_tx.clone (),
);
let audio_output = AudioOutput::new (
Arc::clone (&pcm_quit),
Arc::clone (&shared_state),
thread_decoder.tx.clone (),
)?;
for filename in filenames {
thread_decoder.tx.send (MessageToDecoder::QueueFile (filename))?;
}
while let Ok (msg) = main_rx.recv () { match msg {
MessageToMain::DecoderEmpty => break,
}}
tracing::debug! ("Asking decoder to quit...");
thread_decoder.tx.send (MessageToDecoder::Quit)?;
tracing::debug! ("Joining decoder thread...");
thread_decoder.join ()?;
tracing::debug! ("Joining PCM thread...");
let (lock, cvar) = &*pcm_quit;
let _ = cvar.wait (lock.lock ().unwrap ()).unwrap ();
drop (audio_output);
tracing::info! ("Exiting cleanly.");
Ok (())
*/
}
struct DecoderThread {
join_handle: thread::JoinHandle <Result <()>>,
pub tx: mpsc::SyncSender <MessageToDecoder>,
}
enum MessageToDecoder {
NeedPcm,
SetFile (Option <String>),
Quit,
}
impl DecoderThread {
pub fn new (
shared_state: Arc <(Mutex <SharedState>, Condvar)>,
filenames: Vec <String>,
main_tx: fltk::app::Sender <Message>,
) -> Self
{
let (tx, rx) = mpsc::sync_channel (4);
let self_tx = tx.clone ();
let join_handle = thread::spawn (move|| {
let (lock, cvar) = &*shared_state;
let mut decoder: Option <decoder::Decoder> = None;
'many_files: for filename in &filenames {
let mut decoder = decoder::Decoder::new (&filename)?;
'one_file: loop {
let frame = match decoder.next ()? {
Some (x) => x,
None => {
tracing::debug! ("Decoder thread finished a file");
break 'one_file;
},
};
'thread: while let Ok (msg) = rx.recv () { match msg {
MessageToDecoder::NeedPcm => {
// tracing::trace! ("DecoderThread recv'd NeedPcm");
let mut bytes_produced = 0;
let mut status = false;
let mut decoder_state = cvar.wait_while (lock.lock ().unwrap (), |decoder_state| {
decoder_state.pcm_buffers.samples_available () >= 12_000 &&
! decoder_state.quit
}).unwrap ();
if decoder_state.quit {
break 'many_files;
'pipeline: while bytes_produced < BUFFER_SIZE * 4 * 2 {
// tracing::trace! ("Pumping multi-file decode pipeline");
let frame = if let Some (decoder) = decoder.as_mut () {
decoder.next ()?
}
else {
None
};
if let Some (frame) = frame {
// tracing::trace! ("Decoded bytes");
status = true;
let mut shared_state = shared_state.0.lock ().unwrap ();
bytes_produced += frame.data ().len ();
shared_state.pcm_buffers.produce_bytes (frame.data ().into ());
continue 'pipeline;
}
else if decoder.is_some () {
decoder = None;
main_tx.send (Message::DecoderStatus (false));
}
{
// tracing::trace! ("Decoder thread is producing silence");
let frame = vec! [0; 2_000 * 4 * 2];
{
let mut shared_state = shared_state.0.lock ().unwrap ();
bytes_produced += frame.len ();
shared_state.pcm_buffers.produce_bytes (frame);
// tracing::trace! ("PCM buffer: {}", shared_state.pcm_buffers.samples_available ());
}
status = false;
continue 'pipeline;
}
}
// tracing::trace! ("Left NeedPcm handler");
// main_tx.send (Message::DecoderStatus (status));
},
MessageToDecoder::SetFile (x) => {
if let Some (x) = x.as_ref () {
decoder = Some (decoder::Decoder::new (x)?);
}
else {
decoder = None;
}
// main_tx.send (Message::DecoderStatus (x.is_some ()));
let new_buffers = decoder::PcmBuffers::default ();
self_tx.send (MessageToDecoder::NeedPcm)?;
decoder_state.pcm_buffers.produce_bytes (frame.data ().into ());
}
}
let mut shared_state = shared_state.0.lock ().unwrap ();
shared_state.pcm_buffers = new_buffers;
},
MessageToDecoder::Quit => {
tracing::debug! ("DecoderThread recv'd Quit");
break 'thread;
},
}}
tracing::info! ("Decoder thread quit gracefully");
Ok::<_, anyhow::Error> (())
});
Self {
join_handle,
tx,
}
}
@ -252,8 +476,9 @@ struct AudioOutput {
impl AudioOutput {
pub fn new (
pcm_quit: Arc <(Mutex <bool>, Condvar)>,
shared_state: Arc <(Mutex <SharedState>, Condvar)>,
decoder_tx: mpsc::SyncSender <MessageToDecoder>,
main_tx: fltk::app::Sender <Message>,
) -> Result <Self>
{
let host = cpal::default_host ();
@ -270,39 +495,47 @@ impl AudioOutput {
let stream = device.build_output_stream (
&config,
move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
let (lock, cvar) = &*shared_state;
let (lock, _) = &*shared_state;
let time_start = Instant::now ();
let mut decoder_state = match lock.lock () {
Ok (x) => x,
Err (_) => return,
};
let time_stop = Instant::now ();
let dur = time_stop - time_start;
if dur.as_micros () > 100 {
tracing::warn! ("PCM thread waited {} us for a lock", dur.as_micros ());
}
let pcm_buffers = &mut decoder_state.pcm_buffers;
if ! pcm_buffers.consume_exact (data) {
tracing::warn! ("PCM buffer underflow");
for x in data {
*x = 0.0;
let need_pcm;
let status;
{
let mut decoder_state = match lock.lock () {
Ok (x) => x,
Err (_) => return,
};
let time_stop = Instant::now ();
let dur = time_stop - time_start;
if dur.as_micros () > 100 {
tracing::warn! ("PCM thread waited {} us for a lock", dur.as_micros ());
}
let (lock, cvar) = &*pcm_quit;
let pcm_buffers = &mut decoder_state.pcm_buffers;
let mut pcm_quit = lock.lock ().unwrap ();
*pcm_quit = true;
cvar.notify_one ();
if ! pcm_buffers.consume_exact (data) {
tracing::warn! ("PCM buffer underflow");
status = false;
for x in data {
*x = 0.0;
}
}
else {
status = true;
}
need_pcm = pcm_buffers.samples_available () < BUFFER_SIZE;
}
cvar.notify_one ();
if need_pcm {
decoder_tx.try_send (MessageToDecoder::NeedPcm).ok ();
// tracing::trace! ("AudioOutput sent NeedPcm");
}
// main_tx.send (Message::AudioStreamStatus (status));
},
move |_err| {
// react to errors here.
move |err| {
tracing::error! ("{:?}", err);
},
)?;