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Bug fixes:
* Exported INFILE environment variable is always shell-escaped
This prevent screw-ups when users are using funky filenames.
* dtas-player: enqueued commands cannot use audio format bypass
(the audio format cannot be known ahead-of-time from raw commands)
* YAML omap (ordered map) is explicitly used for all env hashes for
user editing. Normal (unordered hashes) are still allowed if loading
existing files. This does not affect Ruby 1.9+ users, but allows
easier processing for users of other languages.
New features (all platforms):
* dtas-player now plays dtas-splitfx YAML files support cue sheet
emulation based on the track list. Under Linux[1], changes to
the YAML file are reflected in real-time as the file is edited
and saved in an $EDITOR. This feature is useful for dialing
in EQ, compressor, and limiter effects on tracks.
* dtas-player supports the "source restart" command for restarting
playback on modified files for systems without inotify support.
* dtas-splitfx now exports the INDIR and INBASE environment variables
which are intended to act like `$(@D)' and `$(@F)' in GNU make(1).
It should ease managing temporary files for some effects
(e.g. noiseprof + noisered in sox)
* dtas-console supports '!' and '@' hotkeys keys for moving within
files with embedded cue sheets.
* dtas-player supports the "trim" command to focus on a particular
portion of a track. It may be useful when combined with the existing
"tl repeat" command for dialing in audio editing parameters
(via a splitfx YAML file):
To continuously repeat a 5 second part of the current track starting
at 1 minute into the track:
dtas-ctl tl repeat 1 && dtas-ctl trim 1:00 5
Passing "off" as the parameter disables trim:
dtas-ctl trim off
* dtas-env(7) manpage added for common environment variables across
the suite
* dtas-sinkedit shows default parameters in addition to user-changed
parameters
New features (Linux-only)
* dtas-sourceedit and dtas-sinkedit support inotify[1] when editing
the YAML text file. This allows real-time updates on $EDITOR
file save as the user edits the parameters of the commands used
for decoding and playback.
* dtas-archive - paranoid archival script for copying and (re-reading)
files. This is useful when transferring files from removable devices
to computers without ECC memory (or any other bit errors in transport
before main memory is accessed). This requires Ruby 1.9.3 or later
(no 3rd-party RubyGems) on Linux for IO#advise support.
There are also many internal cleanups and more work-in-progress
for dtas-splitfx features.
[1] feature requires the sleepy_penguin RubyGem to be installed.
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New features need to be documented.
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We already convert xs arg to be an Array, so avoid bloating
our code with redundancy.
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We may expand them, so ensure they're properly escaped, first
for use in shell snippets.
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This allows us to avoid unnecessary Array conversions in
call sites
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This is mainly for consistency in behavior with dtas-sourceedit.
Using dtas-sourcedit is still more common and recommended as it
is less likely to introduce audible gaps and pauses.
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This archives audio files (typically .wav from a portable devices)
as FLAC and performs a best-effort verification the file was
transferred succesfully without bit errors by dropping kernel caches
and rechecking the result.
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For seeking, the name might be a little confusing,
but this is zero relative to the current queued source.
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This will aid in allowing us to create effects which affect
only a certain part of a track.
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This feature in the io_splice was probably a bad idea
and slated for removal at some point in the future.
Anyways, do not rely on it since it is undocumented.
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We need to generate a coherent command set for wrapping
portions together, this sets us up for that.
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Oops, introduced in the previous commit:
commit 37eae22446feb5a805d9cd59f6ad54362829189f
(player: support the "trim" parameter)
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This feature is intended to allow users to "zoom-in" on a
particular portion of a track to tweak parameters (either
with dtas-sourceedit(1) or via playback of splitfx YAML files).
This may be combined with looping the tracklist
(via "tl repeat").
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While the Ruby Hash class is ordered in 1.9+, the YAML
specifications do not specify hashes as ordered by default.
Thus we must explicitly declare ordering via !omap for
interopability with non-Ruby tools.
This makes the YAML output of dtas-sourcedit and dtas-sinkedit
slightly more verbose
Users of dtas-splitfx are also encouraged to declare !omap
when creating their YAML files for interoperability.
Ordering env is important because any implementation of
built-in variable expansion is dependent on it.
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@on_readable is always set, so there's no point in checking it
again when we need to call it.
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Users may hit Ctrl-Z to stop their editor during editing
and trigger SICHLD, do not waitpid2 indefinitely in that
case. This prevents missed "source ed" calls for inotify
users.
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TrimFX was too ambiguous with the common environment variable we
use throughout dtas. Since TFX is more limited in scope but
should be more frequently-typed by users (of -splitfx) we'll use
the shorter name here.
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Hopefully this makes the code less daunting to newcomers
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I'm done with dealing with proprietary bug trackers.
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The documentation part is managed by the new
Documentation/update-copyright script. For the future, the rest may
be managed by the update-copyright tool in gnulib
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This reverts commit 3471463325be6c990b3abd18b4d34f723440d19a.
While not strictly necessary, it makes the user syntax in splitfx
files much terser. Changes from the original version should make it
easier-to-read and the diagram should help a lot with understanding.
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Ensure we can apply the workaround to dtas-sourceedit and our
test cases while also simplifying the existing call sites a
little. This will also make for less code churn in 3-5
years down the line when we drop <= 2.1 support.
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This makes debugging, grepping, and following code confusing
at times and also unexpected breaks usage of the global "spawn"
method.
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These are the raw sample counts for the "trim" effect
and may be useful for arithmetic in the shell.
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This rounds out the documentation a bit and hopefully
introduces/encourages some commonality between the playback
and processing/production components of dtas.
Clarify some splitfx-related environment variables while
we're at it.
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dtas-sinkedit now shows default parameters in addition
to user-changed parameters, allowing easier editing.
Also, we need to be able to revert back to using the default
pipe_size on Linux by setting pipe_size to nil (as an empty
field in YAML).
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This allows changes in the source YAML file to be reflected
immediately in player after the user saves the file in their
favorite $EDITOR. Previously, a user would need to:
1) start dtas-sourceedit, spawning $EDITOR
2) edit the file
3) save changes
4) exit $EDITOR
5) repeat starting from 1) until happy with the results
Now, the workflow allows avoiding the context switch between their
$EDITOR and terminal to restart dtas-sourcedit:
1) start dtas-sourceedit, spawning $EDITOR
2) edit the file
3) save changes
4) repeat starting from 1) until happy with the results
5) exit $EDITOR
In my experience, this greatly speeds up tuning of the playback
change, giving all the repeatability and flexibility of editing text
files while having the immediacy of an interactive UI.
Keep in mind this can cause problems for those with auto-save
enabled in their $EDITOR buffer at inopportune times, so a
-N/--no-watch option is added.
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Attempting to perform operations on a file which which cannot
handle it should not cause dtas-console to die with a backtrace
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We already assigned fmt before entering the case statement,
so make the case statement smaller.
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This will likely become more available and faster than GNU nproc(1)
over time.
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We cannot specify an audio format for bypass mode,
so inherit the last one we used and hope it works.
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This was unnecessary since we already iterate through the overrides
hash and merge "manually" based on command-line arguments
(which allows us to represent nested hashes).
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If somebody is using dtas-player to help edit a file for
dtas-splitfx, it is likely they will want to use it when
generating the final files (regardless of "target" format).
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These are intended to act like `$(@D)' and `$(@F)' in GNU make(1)
and to ease managing temporary files for some effects
(e.g. noiseprof + noisered in sox) for splitfx users.
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We cannot afford to break the entire player because somebody
enqueued a non-existent file (or enqueued and later renamed it).
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This makes things easier for scheduling/expansion since we
won't have to deal with floating point numbers when we work
directly with with sample counts (like the rest of dtas).
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It's been a while, and I've lost my train of thought regarding
this system a bit :<
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While we're at it, document the splitfx manpage and
make the example suitable for tests.
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The "-l" and "-r" switches used by the sox ladspa effect
(for latency compensation and replicate, respectively)
are not available until sox v14.4.2, so avoid using it
since it can fail tests on common systems today.
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This reduces memory overhead by a few bytes by eliminating
constant lookups and unnecessary inclusions.
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While the splitfx source is intended for applying effects to
untracked audio files (e.g. transfers of vinyl records or
live concert recordings), it should be useful for applying
effects to an already-tracked recording.
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This should allow users to setup effects in a more standardized
fashion and avoid needing to specify a "command:" field in their
splitfx YAML files in the general case.
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Since splitfx YAML files are intended to be frequently edited and
modified by the user, we'll support automatically restarting the
source when the user saves changes via their favorite $EDITOR
This change is only for Linux users. However, sleepy_penguin
supports kqueue nowadays so a patch to support such functionality
would be appreciated.
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This becomes useful for systems without inotify when we're editing
YAML (or whatever) files frequently and want changes to be reflected
right away during playback. This is a weaker version of the plain
"restart" command, which restarts the entire playback chain.
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This allows splitfx users to test CUE breakpoints and run
file-specific effects without interrupting their normal flow.
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The '!' and '@' keys are used in mplayer to skip chapters,
so perhaps this is a good analogy.
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Process.spawn allows vfork() + execve() usage in Ruby 2.2.0 to
improve performance over normal fork() + execve().
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Merely converting the `before' source information to a hash is not
enough, as the `env' sub-hash is mosified in-place and shared with
the `after' hash. So use `inspect' to serialize and snapshot the
env and rely on a string comparison.
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The major new feature is '>' and '<' keys are now supported
in the dtas-console interface for dtas-player.
"dtas-tl cat" also received a minor speedup for big tracklists
via syscall reductions
shortlog of changes since 0.8.0:
process: update comment for bug workaround
process: update comment for bug workaround #2
compat_onenine: simplify pipe wrapper
tracklist: favor &:sym_to_proc style
dtas-console: '>' and '<' keys for tracklist next/prev
dtas-tl: halve write() syscalls when emitting tracklists
reduce syscalls in recvmsg invocations
doc: flesh out "tl" subcommand docs
The best is yet to come!
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The following subcommands are now documented:
* current
* current-id
* next
* prev
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