* [ANN] dtas 0.20.0 - duct tape audio suite for *nix
@ 2022-02-03 5:15 4% Eric Wong
0 siblings, 0 replies; 2+ results
From: Eric Wong @ 2022-02-03 5:15 UTC (permalink / raw)
To: dtas-all, ruby-talk
Free Software command-line tools for audio playback, mastering, and
whatever else related to audio. dtas follows the worse-is-better
philosophy and acts as duct tape to combine existing command-line tools
for flexibility and ease-of-development. dtas is currently implemented
in Ruby, Perl5, and some embedded shell, but may use other languages in
the future.
Changes:
dtas 0.20.0 - ruby 3.1+ compatibility, splitfx improvements
This release catches up with Psych (YAML) changes in Ruby 3.1+
Ruby 2.3+ is now the minimum version, though keep in mind the
ruby-core team already dropped support for it long ago.
Most of the features are focused on audio engineering
capabilities of dtas-splitfx. dtas-splitfx gains the --filter
switch, along with per-track environment variables and comments.
These new features have made my workflow significantly better.
dtas-archive supports explicit comments, and omits the default
SoX comment. To better cope with temporary and modified files
during editing, dtas-player metadata now checks ctime before
reusing the cache, handy for frequently-modified files.
"dtas-tl prune" is now supported to cull temporary files from
the player tracklist.
There's a few dtas-console improvements, too.
28 changes since v0.19.0 (2021-09-05):
archive: support comments, default to none
splitfx: use Etc.nprocessors for jobs if unspecified
dtas-console: set X11 terminal title iff DISPLAY is set
dtas-console: add 'i' toggle to show comments (metadata)
splitfx: fix track_zpad with integer arg
doc: drop ordered map from examples
player: reduce syscalls when splicing to single target
dtas-console: support Wayland terminal titles, too
console: workaround safe warnings in outdated `curses' gem
require Ruby 2.3+
get rid of DTAS.dedupe_str wrapper
move dtas-graph into script/, support Perl for dtas.sh
use YAML.unsafe_load in Psych 4.x (Ruby 3.1+)
deduplicate and freeze pathnames + metadata
player: remove omap conversion
dtas: drop unnecessary "require 'yaml'" statements
dtas-tl prune: cull missing files from tracklist
dtas-tl: drop encoding hacks, use binary stdout+stderr
use IO#wait_readable consistently
get rid of DTAS::Nonblock wrapper for Ruby <= 2.0
unix_accepted: drop Ruby < 2.3 support code
do not check IO#closed? before calling IO#close
splitfx: support per-track environment variables
splitfx: add --filter option to limit match to comments
player: expire sox metadata cache on file st_ctime changes
readahead: do not call -@ on non-String
splitfx: disallow combining --trim and --filter
splitfx: document changes ahead of 0.20.0 release
* homepage: https://80x24.org/dtas/
* https://80x24.org/dtas/INSTALL
* https://80x24.org/dtas/dtas-player.txt
* https://80x24.org/dtas/NEWS.atom
* git clone https://80x24.org/dtas.git
* dtas-all@nongnu.org (plain-text only, no HTML mail, please)
* mail archives: https://80x24.org/dtas-all/
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* [PATCH] player: reduce syscalls when splicing to single target
@ 2022-01-11 18:20 7% Eric Wong
0 siblings, 0 replies; 2+ results
From: Eric Wong @ 2022-01-11 18:20 UTC (permalink / raw)
To: dtas-all
splice(2) alone does not give enough information as to whether
the source or destination is blocking. However, as far as audio
playback chain goes, the sink should ALWAYS be the limiting
factor as decoder sources need to be able to produce data at
least as fast as the audio is being played (otherwise there'll
be audible drops).
Thus, we bias the select(2) into waiting on a targets on if we
splice(2) less than the data we requested.
---
lib/dtas/buffer/fiddle_splice.rb | 3 ++-
lib/dtas/buffer/splice.rb | 3 ++-
test/test_buffer.rb | 2 +-
3 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/lib/dtas/buffer/fiddle_splice.rb b/lib/dtas/buffer/fiddle_splice.rb
index ad007eb..d9232cd 100644
--- a/lib/dtas/buffer/fiddle_splice.rb
+++ b/lib/dtas/buffer/fiddle_splice.rb
@@ -84,7 +84,8 @@ def broadcast_one(targets, limit = nil)
targets # our one and only target blocked on write
else
@bytes_xfer += s
- :wait_readable # we want to read more from @to_io soon
+ # s < limit means targets[0] is full
+ s < limit ? targets : :wait_readable
end
rescue Errno::EPIPE, IOError => e
__dst_error(targets[0], e)
diff --git a/lib/dtas/buffer/splice.rb b/lib/dtas/buffer/splice.rb
index e5d17ab..b9957ce 100644
--- a/lib/dtas/buffer/splice.rb
+++ b/lib/dtas/buffer/splice.rb
@@ -39,7 +39,8 @@ def broadcast_one(targets, limit = nil)
targets # our one and only target blocked on write
else
@bytes_xfer += s
- :wait_readable # we want to read more from @to_io soon
+ # s < limit means targets[0] is full
+ s < limit ? targets : :wait_readable
end
rescue Errno::EPIPE, IOError => e
__dst_error(targets[0], e)
diff --git a/test/test_buffer.rb b/test/test_buffer.rb
index 54ee584..b89a090 100644
--- a/test/test_buffer.rb
+++ b/test/test_buffer.rb
@@ -62,7 +62,7 @@ def test_broadcast_1
buf = new_buffer
r, w = IO.pipe
buf.wr.write "HIHI"
- assert_equal :wait_readable, buf.broadcast([w])
+ assert_equal [w], buf.broadcast([w])
assert_equal 4, buf.bytes_xfer
tmp = [w]
r.close
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2022-02-03 5:15 4% [ANN] dtas 0.20.0 - duct tape audio suite for *nix Eric Wong
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