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vu-meter's Introduction

vu-meter

Audio VU meter for JACK with any number of channels.

This is heavily inspired by the cadence-jackmeter included in the Cadence tools. I rewrote it in Rust, with freely configurable amount of channels through commandline parameters. It uses XCB i.e. the X11 protocol for graphics. Thus if your desktop is using Wayland, you will also have to configure Xwayland for this program to work.

Usage

Jack VU-Meter inspired by cadence-jackmeter

Usage: vu-meter [OPTIONS]

Options:
  -c, --channels <CHANNELS>  Sets the number of input channels [default: 2]
  -C, --connect <CONNECT>    Automatically connect ports to vu-meter on startup. Format is `channel:port` where `channel` is the VU meter channel number starting from 1 and `port` is the output port to connect to. Can be given any number of times
  -h, --help                 Print help
  -V, --version              Print version

N.B. it does not automatically reconnect connections requested with -C/--connect if they later get disconnected for any reason. It also does not reconnect if JACK is shut down.

Screenshot

Compiling

cargo build --release
  • Run target/release/vu-meter or copy it to some directory in your path, for example ${HOME}/bin/

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vu-meter's Issues

thread 'main' panicked error

I just installed rust and compiled vu-meter on Debian 10 and I get the following error:

$ RUST_BACKTRACE=full cargo run
    Finished dev [unoptimized + debuginfo] target(s) in 0.23s
     Running `/home/james/src/vu-meter/target/debug/vu-meter`
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: ClosedParseErr', src/main.rs:37:61
stack backtrace:
   0:     0x55818871f7dd - std::backtrace_rs::backtrace::libunwind::trace::hee598835bc88d35b
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x55818871f7dd - std::backtrace_rs::backtrace::trace_unsynchronized::h9cdc730ba5cf5d72
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x55818871f7dd - std::sys_common::backtrace::_print_fmt::h75aeaf7ed30e43fa
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x55818871f7dd - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h606862f787600875
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x55818873e1cc - core::fmt::write::he803f0f418caf762
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/fmt/mod.rs:1190:17
   5:     0x55818871c138 - std::io::Write::write_fmt::h70bc45872f37e7bb
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/io/mod.rs:1657:15
   6:     0x558188721957 - std::sys_common::backtrace::_print::h64d038cf8ac3e13e
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x558188721957 - std::sys_common::backtrace::print::h359300b4a7fccf65
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x558188721957 - std::panicking::default_hook::{{closure}}::hf51be35e2f510149
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:295:22
   9:     0x558188721620 - std::panicking::default_hook::h03ca0f22e1d2d25e
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:314:9
  10:     0x5581887220a9 - std::panicking::rust_panic_with_hook::h3b7380e99b825b63
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:698:17
  11:     0x558188721d97 - std::panicking::begin_panic_handler::{{closure}}::h8e849d0710154ce0
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:588:13
  12:     0x55818871fca4 - std::sys_common::backtrace::__rust_end_short_backtrace::hedcdaddbd4c46cc5
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:138:18
  13:     0x558188721aa9 - rust_begin_unwind
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:584:5
  14:     0x5581885b5663 - core::panicking::panic_fmt::he1bbc7336d49a357
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/panicking.rs:143:14
  15:     0x5581885b56f3 - core::result::unwrap_failed::h719f957ed74f93fd
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/result.rs:1749:5
  16:     0x5581885c3514 - core::result::Result<T,E>::unwrap::hf8ba1569c13e9247
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/result.rs:1065:23
  17:     0x5581885b8ee4 - vu_meter::main::h427c9fa7ea46fea7
                               at /home/james/src/vu-meter/src/main.rs:37:30
  18:     0x5581885b6e1b - core::ops::function::FnOnce::call_once::hb05fe7eb252f5201
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/ops/function.rs:227:5
  19:     0x5581885cb50e - std::sys_common::backtrace::__rust_begin_short_backtrace::h7fc2bb36ccbf0ee6
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:122:18
  20:     0x5581885b6bc1 - std::rt::lang_start::{{closure}}::h868c54f779f5f639
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/rt.rs:145:18
  21:     0x55818871eec1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hb7014f43484a8b4e
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/ops/function.rs:259:13
  22:     0x55818871eec1 - std::panicking::try::do_call::h7bc9dc436daeb8c7
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:492:40
  23:     0x55818871eec1 - std::panicking::try::h653d68a27ff5f175
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:456:19
  24:     0x55818871eec1 - std::panic::catch_unwind::h9d739f9f59895e68
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panic.rs:137:14
  25:     0x55818871eec1 - std::rt::lang_start_internal::{{closure}}::hf006f2bc7ce22bbe
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/rt.rs:128:48
  26:     0x55818871eec1 - std::panicking::try::do_call::hfb39d6df61a2e69f
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:492:40
  27:     0x55818871eec1 - std::panicking::try::h13e2d225134958ac
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:456:19
  28:     0x55818871eec1 - std::panic::catch_unwind::h3bd49b5a5dfb1a50
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panic.rs:137:14
  29:     0x55818871eec1 - std::rt::lang_start_internal::h2ba92edce36c035e
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/rt.rs:128:20
  30:     0x5581885b6b90 - std::rt::lang_start::hb271902fc1890f38
                               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/rt.rs:144:17
  31:     0x5581885bbf0c - main
  32:     0x7f3a8068e09b - __libc_start_main
  33:     0x5581885b5e3a - _start
  34:                0x0 - <unknown>

Any ideas of a fix for this?

cargo 1.60.0 (d1fd9fe 2022-03-01)
jackdmp version 1.9.18 tmpdir /dev/shm protocol 8

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