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[PATCH] splitfx: add "offset" option for all track times
From: |
Eric Wong |
Subject: |
[PATCH] splitfx: add "offset" option for all track times |
Date: |
Sun, 17 Nov 2019 22:47:20 +0000 |
This option is intended to make it easy to reuse track splits
from one audio recording of a given source (e.g. a live
performance or vinyl rip) for another audio recording of
the same source.
---
Documentation/dtas-splitfx.pod | 5 +++++
lib/dtas/splitfx.rb | 13 ++++++++++++-
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/Documentation/dtas-splitfx.pod b/Documentation/dtas-splitfx.pod
index b5dadfd..ff3d8cb 100644
--- a/Documentation/dtas-splitfx.pod
+++ b/Documentation/dtas-splitfx.pod
@@ -117,6 +117,11 @@ highest-numbered track. Default: true
=item command - used only by L<dtas-player(1)>
+=item offset - time offset to apply to each track
+
+This is useful for reusing track offsets between different recordings
+of the same source or live performance. May be a negative value.
+
=back
=head1 TRACKS
diff --git a/lib/dtas/splitfx.rb b/lib/dtas/splitfx.rb
index c0c7ac9..e310300 100644
--- a/lib/dtas/splitfx.rb
+++ b/lib/dtas/splitfx.rb
@@ -92,6 +92,7 @@ def initialize
@infmt = nil # wait until input is assigned
@cuebp = nil # for playback
@command = nil # top-level, for playback
+ @offset = 0
end
def _bool(hash, key)
@@ -145,6 +146,16 @@ def import(hash, overrides = {})
end
end
+ if offset = hash["offset"]
+ offset = offset.dup
+ sign = 1
+ if offset.sub!(/\A-/, '')
+ sign = -1
+ else
+ offset.sub!(/\A\+/, '') # drop "+"
+ end
+ @offset = @t2s.call(offset) * sign
+ end
load_input!(hash)
load_tracks!(hash)
@command = hash["command"] # nil by default
@@ -343,7 +354,7 @@ def t2s_cdda(time)
end
def t2s(time)
- @infmt.hhmmss_to_samples(time)
+ @infmt.hhmmss_to_samples(time) + @offset
end
def run(target, opts = {})
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