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| 1 |  |  |  |  |  |  | # Audio::LADSPA perl modules for interfacing with LADSPA plugins | 
| 2 |  |  |  |  |  |  | # Copyright (C) 2003  Joost Diepenmaat. | 
| 3 |  |  |  |  |  |  | # | 
| 4 |  |  |  |  |  |  | # This program is free software; you can redistribute it and/or modify | 
| 5 |  |  |  |  |  |  | # it under the terms of the GNU General Public License as published by | 
| 6 |  |  |  |  |  |  | # the Free Software Foundation; either version 2 of the License, or | 
| 7 |  |  |  |  |  |  | # (at your option) any later version. | 
| 8 |  |  |  |  |  |  | # | 
| 9 |  |  |  |  |  |  | # This program is distributed in the hope that it will be useful, | 
| 10 |  |  |  |  |  |  | # but WITHOUT ANY WARRANTY; without even the implied warranty of | 
| 11 |  |  |  |  |  |  | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
| 12 |  |  |  |  |  |  | # GNU General Public License for more details. | 
| 13 |  |  |  |  |  |  | # | 
| 14 |  |  |  |  |  |  | # You should have received a copy of the GNU General Public License | 
| 15 |  |  |  |  |  |  | # along with this program; if not, write to the Free Software | 
| 16 |  |  |  |  |  |  | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA | 
| 17 |  |  |  |  |  |  | # | 
| 18 |  |  |  |  |  |  | # See the COPYING file for more information. | 
| 19 |  |  |  |  |  |  |  | 
| 20 |  |  |  |  |  |  |  | 
| 21 |  |  |  |  |  |  |  | 
| 22 |  |  |  |  |  |  | package Audio::LADSPA::Buffer; | 
| 23 | 13 |  |  | 13 |  | 49234 | use strict; | 
|  | 13 |  |  |  |  | 27 |  | 
|  | 13 |  |  |  |  | 502 |  | 
| 24 | 13 |  |  | 13 |  | 75 | use base qw(DynaLoader); | 
|  | 13 |  |  |  |  | 23 |  | 
|  | 13 |  |  |  |  | 1402 |  | 
| 25 |  |  |  |  |  |  | our $VERSION = "0.021"; | 
| 26 | 13 |  |  | 13 |  | 70 | use Carp qw(croak); | 
|  | 13 |  |  |  |  | 23 |  | 
|  | 13 |  |  |  |  | 6932 |  | 
| 27 |  |  |  |  |  |  |  | 
| 28 |  |  |  |  |  |  | sub get_words { | 
| 29 | 0 |  |  | 0 | 1 | 0 | my ($self,$amp) = @_; | 
| 30 |  |  |  |  |  |  |  | 
| 31 | 0 | 0 |  |  |  | 0 | if ($self->filled) { | 
| 32 | 0 | 0 |  |  |  | 0 | unless ($amp) { | 
| 33 | 0 |  |  |  |  | 0 | return pack("v*",unpack("f*",$self->get_raw())); | 
| 34 |  |  |  |  |  |  | } | 
| 35 |  |  |  |  |  |  | else { | 
| 36 | 0 |  |  |  |  | 0 | return pack("v*",map { $_ * $amp } unpack("f*",$self->get_raw())); | 
|  | 0 |  |  |  |  | 0 |  | 
| 37 |  |  |  |  |  |  | } | 
| 38 |  |  |  |  |  |  | } | 
| 39 | 0 |  |  |  |  | 0 | return undef; | 
| 40 |  |  |  |  |  |  | } | 
| 41 |  |  |  |  |  |  |  | 
| 42 |  |  |  |  |  |  | sub set_words { | 
| 43 | 0 |  |  | 0 | 1 | 0 | my ($self,$string,$amp) = @_; | 
| 44 | 0 | 0 |  |  |  | 0 | unless ($amp) { | 
| 45 | 0 |  |  |  |  | 0 | $self->set_raw(pack("f*",unpack("v*",$string))); | 
| 46 |  |  |  |  |  |  | } | 
| 47 |  |  |  |  |  |  | else { | 
| 48 | 0 |  |  |  |  | 0 | $self->set_raw(pack("f*",map { $_ * $amp } unpack("v*",$string))); | 
|  | 0 |  |  |  |  | 0 |  | 
| 49 |  |  |  |  |  |  | } | 
| 50 | 0 |  |  |  |  | 0 | return undef; | 
| 51 |  |  |  |  |  |  | } | 
| 52 |  |  |  |  |  |  |  | 
| 53 |  |  |  |  |  |  | sub set_list { | 
| 54 | 5 |  |  | 5 | 1 | 10099 | my $self = shift; | 
| 55 | 5 |  |  |  |  | 67 | $self->set_raw(pack("f*",@_)); | 
| 56 |  |  |  |  |  |  | } | 
| 57 |  |  |  |  |  |  |  | 
| 58 |  |  |  |  |  |  | sub get_list { | 
| 59 | 5 |  |  | 5 | 1 | 12257 | my ($self) = @_; | 
| 60 | 5 | 50 |  |  |  | 37 | if ($self->filled) { | 
| 61 | 5 |  |  |  |  | 54 | return unpack("f*",$self->get_raw); | 
| 62 |  |  |  |  |  |  | } | 
| 63 | 0 |  |  |  |  |  | return; | 
| 64 |  |  |  |  |  |  | } | 
| 65 |  |  |  |  |  |  |  | 
| 66 |  |  |  |  |  |  | sub set { | 
| 67 | 0 |  |  | 0 | 1 |  | my $self = shift; | 
| 68 | 0 | 0 |  |  |  |  | if (@_ > 1) { | 
| 69 | 0 |  |  |  |  |  | $self->set_list(@_); | 
| 70 | 0 |  |  |  |  |  | return; | 
| 71 |  |  |  |  |  |  | } | 
| 72 | 0 |  |  |  |  |  | $self->set_1($_[0]); | 
| 73 |  |  |  |  |  |  | } | 
| 74 |  |  |  |  |  |  |  | 
| 75 |  |  |  |  |  |  | sub get { | 
| 76 | 0 |  |  | 0 | 1 |  | my ($self) = @_; | 
| 77 | 0 | 0 |  |  |  |  | if (wantarray) { | 
| 78 | 0 |  |  |  |  |  | return $self->get_list(); | 
| 79 |  |  |  |  |  |  | } | 
| 80 |  |  |  |  |  |  | else { | 
| 81 | 0 |  |  |  |  |  | return $self->get_1(); | 
| 82 |  |  |  |  |  |  | } | 
| 83 |  |  |  |  |  |  | } | 
| 84 |  |  |  |  |  |  |  | 
| 85 |  |  |  |  |  |  | __PACKAGE__->bootstrap($VERSION); | 
| 86 |  |  |  |  |  |  |  | 
| 87 |  |  |  |  |  |  | use overload | 
| 88 | 13 |  |  |  |  | 3972 | fallback => 1, | 
| 89 |  |  |  |  |  |  | '*=' => \&is_mult, | 
| 90 |  |  |  |  |  |  | '/=' => \&is_div, | 
| 91 |  |  |  |  |  |  | '*' => \&mult, | 
| 92 | 13 |  |  | 13 |  | 3581 | '/' => \÷ | 
|  | 13 |  |  |  |  | 2407 |  | 
| 93 |  |  |  |  |  |  |  | 
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| 95 |  |  |  |  |  |  |  | 
| 96 |  |  |  |  |  |  |  | 
| 97 |  |  |  |  |  |  | 1; | 
| 98 |  |  |  |  |  |  |  | 
| 99 |  |  |  |  |  |  | __END__ |