/usr/share/perl5/Audio/Nama/Help.pm is in nama 1.208-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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package Audio::Nama;
use Modern::Perl;
{
no warnings 'uninitialized';
sub helpline {
my $cmd = shift;
my $out = "Command: $cmd\n";
$out .= "Shortcuts: $text->{commands}->{$cmd}->{short}\n"
if $text->{commands}->{$cmd}->{short};
$out .= "Category: $text->{commands}->{$cmd}->{type}\n";
my $what = munge_help($text->{commands}->{$cmd}->{what});
$out .= "Description: $what\n";
$out .= "Usage: $cmd ";
if ( $text->{commands}->{$cmd}->{parameters}
&& $text->{commands}->{$cmd}->{parameters} ne 'none' ){
$out .= $text->{commands}->{$cmd}->{parameters}
}
$out .= "\n";
my $example = $text->{commands}->{$cmd}->{example};
$example = munge_help($example);
#$example =~ s/!n/\n/g;
if ($example){
$out .= "Example: ";
if ($example =~ /\n/s){
$example = "\n$example"; # add leading newline
$example =~ s(\n)(\n )g; # indent
}
$out .= $example;
$out .= "\n";
}
($/, ucfirst $out, $/);
}
sub munge_help {
my $text = shift;
$text =~ s/(^\s*)!(\s*#)/$1 $2/mg;
$text =~ s/(^\s*!)/#/mg;
$text
}
}
sub helptopic {
my $user_input = shift;
# we expect topic number or topic name
my ($index, $name);
if( $user_input =~ /(\D+)/ ){
$name = $1;
}
else {
$index = $user_input;
$name = $help->{arr_topic}->[$index];
}
#system("man","nama") if $index== 15;
format_help_topic($index, $name);
}
sub format_help_topic {
my ($index, $name) = @_;
my @output;
push @output, "\n-- ", ucfirst $name, " --\n\n";
push @output, $help->{topic}->{$name}, $/;
push @output, $help->{usage} if $index == 14;
@output
}
sub help {
my $name = shift;
$name =~ s/-/_/g; # help indices require underscores
chomp $name;
#print "seeking help for argument: $name\n";
$text->{iam}->{$name} and pager(<<IAM);
$name is an Ecasound command. See 'man ecasound-iam'.
IAM
my @output;
if ( $help->{topic}->{$name}){
@output = helptopic($name);
} elsif ($name =~ /^0/){
@output = map{ helptopic $_ } @{$help->{arr_topic}};
} elsif ( $name =~ /^(\d+)$/ and $1 < 20 ){
@output = helptopic($name)
} else {
my %helped = ();
my @help = ();
if ( $text->{commands}->{$name} ){
push @help, helpline($name);
$helped{$name}++
}
map
{
my $cmd = $_ ;
if ($cmd =~ /$name/ )
{
push @help, helpline($cmd) unless $helped{$cmd}
or $cmd =~ /-/; # skip hyphenated command forms
# which lack full help
$helped{$cmd}++ ;
}
no warnings 'uninitialized';
if ( ! $helped{$cmd} and
grep{ /$name/ } split " ", $text->{commands}->{$cmd}->{short})
{
push @help, helpline($cmd)
}
} keys %{$text->{commands}};
if ( @help ){ push @output,
qq("$name" matches the following commands:\n\n), @help;
}
}
if (@output){
map{ s/_/-/g } @output;
Audio::Nama::pager( @output );
} else { throw("$name: no help found.\n"); }
}
sub help_effect {
my ($input, $id, $no_match, @output);
$id = $input = shift;
push @output, "\n";
# e.g. help tap_reverb
# help 2142
# help var_chipmunk # preset
# convert digits to LADSPA label
if ($id !~ /\D/){ $id = $fx_cache->{ladspa_id_to_label}->{$id} or $no_match++ }
# convert ladspa_label to el:ladspa_label
# convert preset_name to pn:preset_name
if ($fx_cache->{full_label_to_index}->{$id}){} # we are ready
elsif ( $fx_cache->{partial_label_to_full}->{$id} ) { $id = $fx_cache->{partial_label_to_full}->{$id} }
else { $no_match++ }
# one-line help for Ecasound and chain operators, controllers and presets
if ($id !~ /^(lv2|el):/) {
push @output, grep{ /$id/ } @{$fx_cache->{user_help}};
}
# full help for LADSPA/LV2 plugins
elsif ( $id =~ /el:/ ) { @output = $fx_cache->{ladspa_help}->{$id} }
elsif ( $id =~ /elv2:/) { @output = $fx_cache->{lv2_help}->{$id} }
if( $no_match ){ throw("No effects were found matching: $input\n\n"); }
else { Audio::Nama::pager(@output) }
}
sub find_effect {
my @keys = @_;
#print "keys: @keys\n";
#my @output;
my @matches = grep{
my $_help = $_;
my $didnt_match;
map{ $_help =~ /\Q$_\E/i or $didnt_match++ } @keys;
! $didnt_match; # select if no cases of non-matching
} @{$fx_cache->{user_help}};
if ( @matches ){
Audio::Nama::pager( $text->{wrap}->paragraphs(@matches) , "\n" );
} else { throw(join " ", "No effects were found matching:",@keys,"\n\n") }
}
@{$help->{arr_topic}} = qw( all
project
track
chain_setup
transport
marks
effects
group
bus
mixdown
prompt
diagnostics
fades
edits
) ;
@{$help->{arr_topic}} = qw( all
project
track
chain_setup
transport
marks
effects
group
bus
mixdown
prompt
diagnostics
edits
fades
command_line_options
) ;
%{$help->{topic}} = (
help => <<HELP,
help <command> - show help for <command>
help <fragment> - show help for commands matching /<fragment>/
help <ladspa_id> - invoke analyseplugin for info on a LADSPA id
help <topic_number> - list commands under <topic_number>
help <topic_name> - list commands under <topic_name> (lower case)
HELP
project => <<PROJECT,
load_project, load - load an existing project
project_name, name - show the current project name
create_project, create - create a new project directory tree
list_projects, lp - list all Nama projects
get_state, get - retrieve named file or tag
save_state, keep, save - save state as file or tag
exit, quit - exit program, saving state
(Version control)
save - save, commit and tag with <tagname>
get - checkout tag <tagname>
or associated branch and load
branch, br - switch to designated branch and load
list_branches, lbr - list branches and tags (without arguments)
new_branch, nbr - create a new branch starting at the current
commit or a specified commit
tag - tag current commit with a name and optional
message
memoize - enable WAV directory cache
unmemoize - disable WAV directory cache
PROJECT
chain_setup => <<SETUP,
arm - generate and connect chain setup
show_setup, show - show status, all tracks
show_chain_setup, chains - show Ecasound Setup.ecs file
generate, gen - generate chainsetup for audio processing
(usually not necessary)
connect, con - connect chainsetup (usually not necessary)
disconnect, dcon - disconnect chainsetup (usually not necessary)
SETUP
track => <<TRACK,
Most of the Track related commands operate on the 'current
track'. To cut volume for a track called 'sax', you enter
'sax mute' or 'sax; mute'. The first part of the
command sets a new current track. You can also specify a
current track by number, i.e. '4 mute'.
add_track, add - create one or more new tracks
example: add sax; r 3
(record sax from input 3)
example: add piano; r synth
(record piano from JACK client "synth")
link_track, link - create a new, read-only track that uses audio
files from an existing track.
example: link_track new_piano piano
example: link_track intro Mixdown my_song_intro
import_audio, import - import a WAV file, resampling if necessary
remove_track - remove effects, parameters and GUI for current
track
show_tracks, show, tracks - show status of all tracks
and group settings
show_track, sh - show status of current track,
including effects, versions,
modifiers, "sax; sh"
show_bus_tracks, shb - show status of current bus,
mix track and member tracks
show_tracks_all showa sha - show all tracks, including hidden
stereo - set track width to 2 channels
mono - set track width to 1 channel
solo - mute all tracks but current track
all, nosolo - return to pre-solo status
- track inputs and outputs
source, src, r - set track source
- with no arguments returns current signal source
----------------------------------------------------------
for this input use this command
----------------------------------------------------------
* soundcard channel 3 source 3
* JACK client source fluidsynth
* JACK port source fluidsynth:left
* JACK port with spaces source "MPlayer [20120]:out_0"
* unconnected JACK port source manual (or 'man')
note: the port for mono track 'piano' would be ecasound:piano_in_1
* JACK ports list source drum.ports (ports list from drums.ports)
source ports (ports list from trackname.ports)
-----------------------------------------------------------
send, out, m, aux - create an auxiliary send
- same arguments as 'source'
- currently one send allowed per track
- version
set_version, version, ver, n - set current track version
list_version, lver, lv - list version numbers of current track
- rw_status
rec - set track to REC (live signal source)
mon - set track to PLAY (WAV file playback)
off - set track OFF (omit from setup)
write_defeat, wd - toggle track WAV recording off
write_enable, we - toggle track WAV recording on
- vol/pan
pan, p - get/set pan position
pan_back, pb - restore pan after pr/pl/pc
pan_center, pc - set pan center
pan_left, pl - pan track fully left
pan_right, pr - pan track fully right
unity - unity volume
vol, v - get/set track volume
sax vol + 20 (increase by 20)
sax vol - 20 (reduce by 20)
sax vol * 3 (multiply by 3)
sax vol / 2 (cut by half)
mute, c, cut - mute volume
unmute, nomute, uncut, C - restore muted volume
- chain object modifiers
mod, mods, modifiers - show or assign select/reverse/playat modifiers
for current track
nomod, nomods,
nomodifiers - remove all modifiers from current track
- signal processing
ecanormalize, normalize, norm
- run ecanormalize on current track version
ecafixdc, fixdc - run ecafixdc on current track version
autofix_tracks, autofix - fixdc and normalize selected versions of all PLAY
tracks
- cutting and time shifting
set_region, srg - specify a track region using times or mark names
add_region, arg - define a region creating an auxiliary track
remove_region, rrg - remove auxiliary track or region definition
shift_track, shift - set playback delay for track/region
unshift_track, unshift - eliminate playback delay for track/region
- track caching (intermediate mixdown)
cache_track, cache, ct - store effects-processed track signal as new version
uncache_track, uncache, unc - select uncached track version, replace effects
- hazardous or destructive commands for advanced users
set_track - directly set current track parameters
destroy_current_wav - unlink current track's selected WAV version.
TRACK
transport => <<TRANSPORT,
start, t, SPACE - Start processing. SPACE must be at beginning of
command line.
stop, s, SPACE - Stop processing. SPACE must be at beginning of
command line.
rewind, rw - Rewind some number of seconds, i.e. rw 15
forward, fw - Forward some number of seconds, i.e. fw 75
setpos, sp - Set the playback head position, i.e. setpos 49.2
getpos, gp - Get the current head position
to_start, beg - set playback head to start
to_end, end - set playback head to end
loop_enable, loop - loop playback between two points
example: loop 5.0 200.0 (positions in seconds)
example: loop start end (mark names)
example: loop 3 4 (mark numbers)
loop_disable, noloop, nl
- disable looping
preview - start engine with WAV recording disabled
(for mic check, etc.) Release with 'arm'.
doodle - start engine with all live inputs enabled.
Release with 'preview' or 'arm'.
ecasound_start, T - ecasound-only start (not usually needed)
ecasound_stop, S - ecasound-only stop (not usually needed)
TRANSPORT
marks => <<MARKS,
new_mark, mark, k - drop mark at current position, with optional name
list_marks, lmk, lm - list marks showing index, time, name
next_mark, nmk, nm - jump to next mark
previous_mark, pmk, pm - jump to previous mark
name_mark, nom - give a name to current mark
to_mark, tmk, tom - jump to a mark by name or index
remove_mark, rmk, rom - remove current mark
modify_mark, move_mark,
mmk, mm - change the time setting of current mark
MARKS
effects => <<EFFECTS,
- information commands
ladspa_register, lrg - list LADSPA effects
preset_register, prg - list Ecasound presets
ctrl_register, crg - list Ecasound controllers
find_effect, fe - list available effects matching arguments
example: find_effect reverb
help_effect, he - full information about an effect
example: help_effect 1209
(information about LADSPA plugin 1209)
example: help_effect valve
(information about LADSPA plugin valve)
- effect manipulation commands
add_effect, afx - add an effect to the current track
add_controller, acl - add an Ecasound controller
insert_effect, ifx - insert an effect before another effect
modify_effect, mfx - set, increment or decrement effect parameter
remove_effect, rfx - remove an effect or controller
append_effect, apfx - add effect to the end of current track effect list
bypass_effects, bypass, bye - suspend current track effects except vol/pan
restore_effects, restore, ref - restore track effects
- send/receive inserts
add_insert, ain - add an insert to current track
remove_insert, rin - remove an insert from current track
set_insert_wetness, wet - set/query insert wetness
example: wet 99 (99% wet, 1% dry)
- effect chains (presets, each consisting of multiple effects)
list_effect_chains, lec - list effect chains and their parameters
new_effect_chain, nec - define a new effect chain
overwrite_effect_chain, oec - as above, but overwite existing definition
add_effect_chain, aec - add an effect chain to the current track
delete_effect_chain, dec - delete an effect chain definition
- effect profiles (effect chains for a group of tracks)
new_effect_profile, nep - define a new effect profile
apply_effect_profile, aep - apply an effect profile
(current effects are bypassed)
overlay_effect_profile, oep - apply an effect profile,
adding to current effects
delete_effect_profile, dep - delete an effect profile definition
EFFECTS
group => <<GROUP,
group_rec, grec, R - group REC mode
group_mon, gmon, M - group PLAY mode
group_off, goff, Z - group OFF mode
group_version, gver, gv - select default group version
- used for switching among
several multitrack recordings
new_bunch, bunch, nb - name a bunch of tracks
e.g. bunch strings violins cello bass
e.g. bunch 3 4 6 7 (track indexes)
list_bunches, lb - list groups of tracks (bunches)
remove_bunches, rb - remove bunch definitions
for - execute commands on several tracks
by name, or by specifying a group or bunch
example: for strings; vol +10
example: for drumkit congas; mute
example: for 3 5; vol * 1.5
example: for Main; version 5;; show
(operates on all tracks in bus Main,
commands following ';;' execute only once)
example: for bus; version 5
(operates on tracks in current bus)
example: for rec; off
(operates on tracks in current bus set to 'rec')
example: for OFF; off
(operates on tracks in current bus w/status OFF)
GROUP
bus => <<BUS,
list_buses, lbs - list bus data
add_submix_raw, asr - create bus and slave tracks for
sending pre-fader track signals
add_submix_cooked, asc - as above, for post-fader signals
update_submix, usm - refresh send bus track list
remove_bus, - remove a bus
add_bus, abs - create a sub-bus feeding a regular user track
of the same name
example: add_bus Strings
add_tracks violin cello bass
for cello violin bass; move_to_bus Strings
BUS
mixdown => <<MIXDOWN,
mixdown, mxd - enable mixdown
mixoff, mxo - disable mixdown
mixplay, mxp - playback a recorded mix
automix - normalize track vol levels, then mixdown
master_on, mr - enter mastering mode
master_off, mro - leave mastering mode
MIXDOWN
prompt => <<PROMPT,
At the command prompt, you can enter several types
of commands:
Type Example
------------------------------------------------------------
Nama commands load somesong
Ecasound commands cs-is-valid
Shell expressions ! ls
Perl code eval 2*3 # prints '6'
PROMPT
diagnostics => <<DIAGNOSTICS,
dump_all, dumpall, dumpa - dump most internal state
dump_track, dumpt, dump - dump current track data
dump_group, dumpgroup, dumpg - dump group settings for user tracks
show_io, showio - show chain inputs and outputs
engine_status, egs - display ecasound audio processing engine
status
DIAGNOSTICS
edits => <<EDITS,
- general
list_edits, led - list edits
new_edit, ned - create new edit for current track and version
select_edit, sed - choose an edit to modify, becomes current edit
end_edit_mode, eem - track plays full length
disable_edits, ded - disable edits for current track
destroy_edit - remove all WAV files and data for current edit
- edit marks
set_edit_points, sep - mark play start, rec start and rec end
play_start_mark, psm - select and move to play start mark
rec_start_mark, rsm - select and move to rec start mark
red_end_mark, rem - select and move to rec end mark
set_play_start_mark, spsm - set mark to current position
set_rec_start_mark, srsm - set mark to current position
set_rec_end_mark, srem - set mark to current position
- preview edit segment
preview_edit_in pei - preview track with edit segment removed
preview_edit_out peo - preview edit segment to be removed
- record/play edit
record_edit red - record a WAV file for current edit
play_edit ped - play a completed edit
- select edit related tracks
edit_track, et - set edit track as current track
edit_track, et - set edit track as current track
host_track, ht - set host track alias as current track
host_track_alias, hta - set host track alias as current track
version_mix_track,vmt - set version mix track as current track
EDITS
fades => <<FADES,
add_fade, afd, fade - add fade (in or out) to current track
examples:
fade in song_start 0.2
(fades in at mark 'song_start' over 0.2 s)
fade out 0.5 song_start
(fades out over 0.5 s ending at 'song_start')
remove_fade, rfd - remove fade (by index)
list_fade lfd - list all fades
FADES
);
# print values %{$help->{topic}};
$help->{screen} = <<HELP;
Welcome to Nama help
The help command ('help', 'h') can take several arguments.
help <command> - show help for <command>
help <fragment> - show help for all commands matching /<fragment>/
help <topic_number> - list commands under topic <topic_number> below
help yml - browse the YAML command source
help is available for the following topics:
0 All
1 Project
2 Track
3 Chain setup
4 Transport
5 Marks
6 Effects
7 Group control
8 Buses
9 Mixdown
10 Command prompt
11 Diagnostics
12 Edits
13 Fades
14 Command line options
HELP
1;
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