# Tag: Alsa, Jack
# Type: Plugin, LV2
# Category: Audio, Tool

Name:    zconvo.lv2
Version: 0.7.1
Release: 1%{?dist}
Summary: Zero Config Convolver
License: GPL-2.0-or-later
URL:     https://github.com/x42/zconvo.lv2

Vendor:       Audinux
Distribution: Audinux

Source0: https://github.com/x42/zconvo.lv2/archive/refs/tags/v%{version}.tar.gz#/%{name}-%{version}.tar.gz

BuildRequires: gcc gcc-c++ make
BuildRequires: lv2-devel
BuildRequires: fftw-devel
BuildRequires: libsndfile-devel
BuildRequires: libsamplerate-devel

%description
zeroconvolv2 is a LV2 plugin to convolve audio signals.

The convolution kernel is able to process any number of samples,
up to the nominal block-size, including non-power-of-two blocksizes.

It is intended for use with Ardour 6, a LV2 host that provides
realtime-priority information to this plugin for efficient background
processing. Ardour also requires plugins to be able to handle an
arbitrary number of samples per cycle, up to the nominal block-size.

The plugin comes in two variants:
- zero configuration options: IRs are only available via presets.
- zero latency, user-loadable IRs with gain controls.

Note that LV2 allows preset-bundles (many presets can be in a single
bundle), and a plugin can also have many of those preset-bundles.
(idea: "church reverb preset collection", "theatre reverb collection", etc.)

Some presets are available from https://x42-plugins.com/x42/x42-zconvolver
These are all normalized to yield approx equal loudness, and tagged, so
that Ardour 6 can show a handy preset selector.

This plugin uses background processing and is suitable to process long
impulse-responses. Configurations up to true-stereo (4 channels) are supported.

The configurable convolver has the option to buffer the signal, introducing
one cycle of latency for increased reliability (and lower DSP load.
This is always enabled for the preset-variant.

For developers, the plugin also offers a framework for various IR sources
(file, memory, decoded virtual I/O). This can be used to extend the plugin
to process custom FIR, or to obfuscate/decrypt IRs on demand.

%prep
%autosetup -n %{name}-%{version}

%build

%set_build_flags
export OPTIMIZATIONS="$CFLAGS"
%make_build PREFIX=%{_prefix} LV2DIR=%{_libdir}/lv2 STRIP=true

%install 

%make_install PREFIX=%{_prefix} LV2DIR=%{_libdir}/lv2 STRIP=true

%files
%doc README.md
%license COPYING
%{_libdir}/lv2/*

%changelog
* Tue Sep 19 2023 Yann Collette <ycollette.nospam@free.fr> - 0.7.1-1
- update to 0.7.1-1

* Fri Sep 15 2023 Yann Collette <ycollette.nospam@free.fr> - 0.7.0-1
- update to 0.7.0-1

* Sun Jul 02 2023 Yann Collette <ycollette.nospam@free.fr> - 0.6.8-1
- update to 0.6.8-1

* Thu May 11 2023 Yann Collette <ycollette.nospam@free.fr> - 0.6.7-1
- update to 0.6.7-1

* Sun Nov 20 2022 Yann Collette <ycollette.nospam@free.fr> - 0.6.6-1
- update to 0.6.6-1

* Tue Nov 01 2022 Yann Collette <ycollette.nospam@free.fr> - 0.6.5-1
- Initial spec file