🚧 still trying to debug the popping. I've narrowed it down.

main
_ 2021-11-13 02:42:31 +00:00
parent 3f5be609ea
commit 9292f0767e
2 changed files with 90 additions and 49 deletions

View File

@ -86,6 +86,7 @@ pub struct Decoder {
best_stream_idx: usize,
pub decoder: DecodeContext,
pub resampler: ResamplingContext,
resampler_flushed: bool,
}
impl Decoder {
@ -109,38 +110,40 @@ impl Decoder {
best_stream_idx,
decoder,
resampler,
resampler_flushed: false,
})
}
pub fn fill_buffer (&mut self, pcm_buffers: &mut PcmBuffers) -> Result <bool> {
match self.resampler.delay () {
Some (x) => {
tracing::trace! ("flushing resampler ({} ms)", x.milliseconds);
if ! self.resampler_flushed && self.resampler.delay ().is_some () {
let mut frame_resampled = ffmpeg_next::util::frame::Audio::empty ();
frame_resampled.set_channel_layout (ChannelLayout::STEREO);
frame_resampled.set_format (Sample::F32 (sample::Type::Packed));
frame_resampled.set_rate (48000);
if self.resampler.flush (&mut frame_resampled).is_ok () {
let rc = self.resampler.flush (&mut frame_resampled)?;
if rc.is_none () {
self.resampler_flushed = true;
}
if ! frame_resampled.data (0).is_empty () {
tracing::trace! ("flushing resampler... {}", frame_resampled.data (0).len ());
pcm_buffers.produce_bytes (frame_resampled.data (0));
return Ok (true);
}
else {
tracing::error! ("resampler flushed out a zero-length frame?");
}
},
_ => {},
}
let mut frame_src = ffmpeg_next::util::frame::Audio::empty ();
if self.decoder.receive_frame (&mut frame_src).is_ok () {
//eprintln! ("decoder.receive_frame");
// tracing::trace! ("decoded frame");
let mut frame_resampled = ffmpeg_next::util::frame::Audio::empty ();
frame_resampled.set_channel_layout (ChannelLayout::STEREO);
frame_resampled.set_format (Sample::F32 (sample::Type::Packed));
frame_resampled.set_rate (48000);
self.resampler.run (&frame_src, &mut frame_resampled)?;
self.resampler_flushed = false;
pcm_buffers.produce_bytes (frame_resampled.data (0));
return Ok (true);
}
@ -149,12 +152,54 @@ impl Decoder {
while let Some ((stream, packet)) = self.input_ctx.packets ().next () {
if stream.index () == self.best_stream_idx {
//eprintln! ("decoder.send_packet");
// tracing::trace! ("demuxed packet");
self.decoder.send_packet (&packet)?;
return Ok (true);
}
}
if self.resampler_flushed {
return Ok (false);
}
let mut frame_resampled = ffmpeg_next::util::frame::Audio::empty ();
frame_resampled.set_channel_layout (ChannelLayout::STEREO);
frame_resampled.set_format (Sample::F32 (sample::Type::Packed));
frame_resampled.set_rate (48000);
let rc = self.resampler.flush (&mut frame_resampled)?;
if rc.is_none () {
self.resampler_flushed = true;
}
if ! frame_resampled.data (0).is_empty () {
tracing::trace! ("flushing resampler... {}", frame_resampled.data (0).len ());
pcm_buffers.produce_bytes (frame_resampled.data (0));
return Ok (true);
}
Ok (false)
}
}
#[cfg (test)]
mod test {
use super::*;
#[test]
fn pcm_buffer () {
let mut x = PcmBuffers::default ();
x.produce (vec! [0.0, 1.0, 2.0, 3.0]);
x.produce (vec! [4.0, 5.0, 6.0, 7.0]);
let mut data = vec! [0.0; 3];
assert! (x.consume_exact (&mut data));
assert_eq! (&data, &[0.0, 1.0, 2.0]);
assert! (x.consume_exact (&mut data));
assert_eq! (&data, &[3.0, 4.0, 5.0]);
}
}

View File

@ -1,4 +1,6 @@
use std::{
fs::File,
io::Write,
sync::{
Arc,
Condvar,
@ -8,7 +10,7 @@ use std::{
self,
sleep,
},
time::Duration,
time::{Duration, Instant},
};
use anyhow::{
@ -17,6 +19,11 @@ use anyhow::{
Result,
};
use byteorder::{
ByteOrder,
LittleEndian,
};
use cpal::traits::{
DeviceTrait,
HostTrait,
@ -45,14 +52,12 @@ fn cmd_debug (args: &[String]) -> Result <()> {
let mut decoder = decoder::Decoder::new (&filename)?;
let mut pcm_buffers = decoder::PcmBuffers::default ();
tracing::debug! ("Constructed decoder");
sleep (Duration::from_secs (3));
tracing::debug! ("Decoding...");
let mut f = File::create ("pcm-dump.data")?;
'decoding: loop {
while pcm_buffers.samples_available () < 48_000 {
while pcm_buffers.samples_available () < 12_000 {
if ! decoder.fill_buffer (&mut pcm_buffers)? {
tracing::info! ("Decoder finished");
break 'decoding;
@ -60,29 +65,16 @@ fn cmd_debug (args: &[String]) -> Result <()> {
}
while pcm_buffers.samples_available () > 0 {
let mut buf = vec! [0.0f32; pcm_buffers.samples_available ()];
pcm_buffers.consume_exact (&mut buf);
let mut src = vec! [0.0f32; pcm_buffers.samples_available ()];
// dbg! (src.len ());
pcm_buffers.consume_exact (&mut src);
let mut dest = vec! [0; src.len () * 4];
LittleEndian::write_f32_into (&src, &mut dest);
f.write_all (&dest)?;
}
}
sleep (Duration::from_secs (3));
tracing::debug! ("Dropping resampler...");
dbg! (decoder.resampler.delay ());
drop (decoder.resampler);
sleep (Duration::from_secs (3));
tracing::debug! ("Dropping decoder...");
drop (decoder.decoder);
sleep (Duration::from_secs (3));
tracing::debug! ("Dropping input_ctx...");
drop (decoder.input_ctx);
sleep (Duration::from_secs (3));
Ok (())
}
@ -108,7 +100,7 @@ fn cmd_play (args: &[String]) -> Result <()> {
// tracing::trace! ("decode thread parking");
let mut decoder_state = cvar.wait_while (lock.lock ().unwrap (), |decoder_state| {
decoder_state.pcm_buffers.samples_available () >= 48_000 &&
decoder_state.pcm_buffers.samples_available () >= 12_000 &&
! decoder_state.quit
}).unwrap ();
@ -120,7 +112,7 @@ fn cmd_play (args: &[String]) -> Result <()> {
let pcm_buffers = &mut decoder_state.pcm_buffers;
while pcm_buffers.samples_available () < 96_000 {
while pcm_buffers.samples_available () < 12_000 {
// tracing::trace! ("Decoder is trying to work...");
if ! decoder.fill_buffer (pcm_buffers)? {
tracing::info! ("Finished decoding file");
@ -152,10 +144,16 @@ fn cmd_play (args: &[String]) -> Result <()> {
move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
let (lock, cvar) = &*pair;
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 () > 1 {
dbg! (dur.as_micros ());
}
let pcm_buffers = &mut decoder_state.pcm_buffers;
@ -167,6 +165,7 @@ fn cmd_play (args: &[String]) -> Result <()> {
}
let (lock, cvar) = &*pcm_quit;
let mut pcm_quit = lock.lock ().unwrap ();
*pcm_quit = true;
cvar.notify_one ();
@ -251,9 +250,6 @@ mod test {
}
}
assert_eq! (packet_count, 5496);
assert_eq! (frame_count, 5496);
Ok (())
}
}