Deadlocks in get_picture() on specific files with multi-threaded decoding while ffmpeg/dav1dplay don't
#70
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diff --git a/tools/src/main.rs b/tools/src/main.rs
index ca17a41..148ba90 100644
--- a/tools/src/main.rs
+++ b/tools/src/main.rs
@@ -95,7 +95,10 @@ fn main() -> std::io::Result<()> {
let header = ivf::read_header(&mut r)?;
println!("{:?}", header);
- let mut dec = dav1d::Decoder::new().expect("failed to create decoder instance");
+ let mut settings = dav1d::Settings::default();
+ settings.set_n_threads(2);
+ let mut dec =
+ dav1d::Decoder::with_settings(&settings).expect("failed to create decoder instance");
while let Ok(packet) = ivf::read_packet(&mut r) {
println!("Packet {}", packet.pts);With 1 thread it doesn't deadlock, with 2 or more threads it deadlocks. |
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Actually VLC also deadlocks on this file in the same way. I'll report this to dav1d then. |
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You may keep the issue open. |
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File available from https://www.dropbox.com/s/s8o8paaeghcz3cy/dav1d-rs-get-picture-deadlock.ivf?dl=0. This is an AV1 version of https://www.youtube.com/watch?v=mkggXE5e2yk
I was quite certain that this is a bug in dav1d but... I can't reproduce it with dav1dplay (from the dav1d examples, using the placebo-gl renderer because the SDL one doesn't support this configuration) and also not with ffmpeg. But I can reproduce it with the dav1d GStreamer plugin, which uses dav1d-rs.
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