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-rw-r--r--plugins/eg-synth.lv2/manifest.ttl.in9
-rw-r--r--plugins/eg-synth.lv2/synth.c173
-rw-r--r--plugins/eg-synth.lv2/synth.ttl48
l---------plugins/eg-synth.lv2/waf1
-rw-r--r--plugins/eg-synth.lv2/wscript76
5 files changed, 307 insertions, 0 deletions
diff --git a/plugins/eg-synth.lv2/manifest.ttl.in b/plugins/eg-synth.lv2/manifest.ttl.in
new file mode 100644
index 0000000..24acd71
--- /dev/null
+++ b/plugins/eg-synth.lv2/manifest.ttl.in
@@ -0,0 +1,9 @@
+# See manifest.ttl.in in the eg-amp.lv2 example for an explanation of this file
+
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/plugins/eg-synth>
+ a lv2:Plugin ;
+ lv2:binary <synth@LIB_EXT@> ;
+ rdfs:seeAlso <synth.ttl> .
diff --git a/plugins/eg-synth.lv2/synth.c b/plugins/eg-synth.lv2/synth.c
new file mode 100644
index 0000000..c607daa
--- /dev/null
+++ b/plugins/eg-synth.lv2/synth.c
@@ -0,0 +1,173 @@
+/*
+ Copyright 2012 Harry van Haaren <harryhaaren@gmail.com>
+ Copyright 2012 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+ @file synth.c Implementation of the LV2 Sin Synth example plugin.
+
+ This is a simple LV2 synthesis plugin that demonstrates how to receive MIDI
+ events and render audio in response to them.
+*/
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+#define SYNTH_URI "http://lv2plug.in/plugins/eg-synth"
+
+/** Port indices. */
+typedef enum {
+ SYNTH_FREQ = 0,
+ SYNTH_OUTPUT,
+} PortIndex;
+
+/** Plugin instance. */
+typedef struct {
+ // Sample rate, necessary to generate sin wave in run()
+ double sample_rate;
+
+ // Current wave phase
+ float phase;
+
+ // Port buffers
+ float* freq;
+ float* input;
+ float* output;
+} Synth;
+
+/** Create a new plugin instance. */
+static LV2_Handle
+instantiate(const LV2_Descriptor* descriptor,
+ double rate,
+ const char* bundle_path,
+ const LV2_Feature* const* features)
+{
+ Synth* self = (Synth*)malloc(sizeof(Synth));
+
+ // Store the sample rate so it is available in run()
+ self->sample_rate = rate;
+
+ return (LV2_Handle)self;
+}
+
+/** Connect a port to a buffer (audio thread, must be RT safe). */
+static void
+connect_port(LV2_Handle instance,
+ uint32_t port,
+ void* data)
+{
+ Synth* self = (Synth*)instance;
+
+ switch ((PortIndex)port) {
+ case SYNTH_FREQ:
+ self->freq = (float*)data;
+ break;
+ case SYNTH_OUTPUT:
+ self->output = (float*)data;
+ break;
+ }
+}
+
+/** Initialise and prepare the plugin instance for running. */
+static void
+activate(LV2_Handle instance)
+{
+ Synth* self = (Synth*)instance;
+
+ // Initialize phase so we start at the beginning of the wave
+ self->phase = 0.0f;
+}
+
+/** Process a block of audio (audio thread, must be RT safe). */
+static void
+run(LV2_Handle instance, uint32_t n_samples)
+{
+ Synth* self = (Synth*)instance;
+
+ const float PI = 3.1415;
+ const float volume = 0.3;
+ const float freq = *(self->freq);
+ float* const output = self->output;
+
+ float samples_per_cycle = self->sample_rate / freq;
+
+ /* Calculate the phase offset per sample. Phase ranges from 0..1, so
+ phase_increment is a floating point number such that we get "freq"
+ number of cycles in "sample_rate" amount of samples. */
+ float phase_increment = (1.f / samples_per_cycle);
+
+ for (uint32_t pos = 0; pos < n_samples; pos++) {
+
+ /* Calculate the next sample. Phase ranges from 0..1, but sin()
+ expects its input in radians, so we multiply by 2 PI to convert it.
+ We also multiply by volume so it's not extremely loud. */
+ output[pos] = sin(self->phase * 2 * PI) * volume;
+
+ /* Increment the phase so we generate the next sample */
+ self->phase += phase_increment;
+ if (self->phase > 1.0f) {
+ self->phase = 0.0f;
+ }
+ }
+}
+
+/** Finish running (counterpart to activate()). */
+static void
+deactivate(LV2_Handle instance)
+{
+ /* Nothing to do here in this trivial mostly stateless plugin. */
+}
+
+/** Destroy a plugin instance (counterpart to instantiate()). */
+static void
+cleanup(LV2_Handle instance)
+{
+ free(instance);
+}
+
+/** Return extension data provided by the plugin. */
+const void*
+extension_data(const char* uri)
+{
+ return NULL; /* This plugin has no extension data. */
+}
+
+/** The LV2_Descriptor for this plugin. */
+static const LV2_Descriptor descriptor = {
+ SYNTH_URI,
+ instantiate,
+ connect_port,
+ activate,
+ run,
+ deactivate,
+ cleanup,
+ extension_data
+};
+
+/** Entry point, the host will call this function to access descriptors. */
+LV2_SYMBOL_EXPORT
+const LV2_Descriptor*
+lv2_descriptor(uint32_t index)
+{
+ switch (index) {
+ case 0:
+ return &descriptor;
+ default:
+ return NULL;
+ }
+}
diff --git a/plugins/eg-synth.lv2/synth.ttl b/plugins/eg-synth.lv2/synth.ttl
new file mode 100644
index 0000000..dd6afa4
--- /dev/null
+++ b/plugins/eg-synth.lv2/synth.ttl
@@ -0,0 +1,48 @@
+# LV2 Sinewave synth plugin
+# Copyright 2012 Harry van Haaren <harryhaaren@gmail.com>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/plugins/eg-synth>
+ a lv2:Plugin ,
+ lv2:InstrumentPlugin ;
+ doap:maintainer [
+ a foaf:Person ;
+ foaf:name "Harry van Haaren" ;
+ foaf:mbox <harryhaaren@gmail.com>
+ ] ;
+ doap:name "Example Synthesizer" ;
+ doap:license <http://opensource.org/licenses/isc> ;
+ lv2:optionalFeature lv2:hardRTCapable ;
+ lv2:port [
+ a lv2:InputPort ,
+ lv2:ControlPort ;
+ lv2:index 0 ;
+ lv2:symbol "frequency" ;
+ lv2:name "Frequency" ;
+ lv2:default 440.0 ;
+ lv2:minimum 40.0 ;
+ lv2:maximum 880.0
+ ] , [
+ a lv2:AudioPort ,
+ lv2:OutputPort ;
+ lv2:index 1 ;
+ lv2:symbol "out" ;
+ lv2:name "Out"
+ ] .
diff --git a/plugins/eg-synth.lv2/waf b/plugins/eg-synth.lv2/waf
new file mode 120000
index 0000000..59a1ac9
--- /dev/null
+++ b/plugins/eg-synth.lv2/waf
@@ -0,0 +1 @@
+../../waf \ No newline at end of file
diff --git a/plugins/eg-synth.lv2/wscript b/plugins/eg-synth.lv2/wscript
new file mode 100644
index 0000000..f1b8e2d
--- /dev/null
+++ b/plugins/eg-synth.lv2/wscript
@@ -0,0 +1,76 @@
+#!/usr/bin/env python
+from waflib.extras import autowaf as autowaf
+
+# Variables for 'waf dist'
+APPNAME = 'eg-synth.lv2'
+VERSION = '1.0.0'
+
+# Mandatory variables
+top = '.'
+out = 'build'
+
+def options(opt):
+ opt.load('compiler_c')
+ autowaf.set_options(opt)
+
+def configure(conf):
+ conf.load('compiler_c')
+ autowaf.configure(conf)
+ autowaf.display_header('Synth Configuration')
+
+ if conf.env['MSVC_COMPILER']:
+ conf.env.append_unique('CFLAGS', ['-TP', '-MD'])
+ else:
+ conf.env.append_unique('CFLAGS', '-std=c99')
+
+ if not autowaf.is_child():
+ autowaf.check_pkg(conf, 'lv2core', uselib_store='LV2CORE')
+
+ # Set env['pluginlib_PATTERN']
+ pat = conf.env['cshlib_PATTERN']
+ if pat.startswith('lib'):
+ pat = pat[3:]
+ conf.env['pluginlib_PATTERN'] = pat
+ conf.env['pluginlib_EXT'] = pat[pat.rfind('.'):]
+
+ autowaf.display_msg(conf, "LV2 bundle directory", conf.env['LV2DIR'])
+ print('')
+
+def build(bld):
+ bundle = APPNAME
+
+ # Build manifest.ttl by substitution (for portable lib extension)
+ bld(features = 'subst',
+ source = 'manifest.ttl.in',
+ target = '%s/%s' % (bundle, 'manifest.ttl'),
+ install_path = '${LV2DIR}/%s' % bundle,
+ LIB_EXT = bld.env['pluginlib_EXT'])
+
+ # Copy other data files to build bundle (build/eg-amp.lv2)
+ for i in [ 'synth.ttl' ]:
+ bld(features = 'subst',
+ source = i,
+ target = '%s/%s' % (bundle, i),
+ install_path = '${LV2DIR}/%s' % bundle,
+ LIB_EXT = bld.env['pluginlib_EXT'])
+
+ # Create a build environment that builds module-style library names
+ # e.g. eg-amp.so instead of libeg-amp.so
+ # Note for C++ you must set cxxshlib_PATTERN instead
+ penv = bld.env.derive()
+ penv['cshlib_PATTERN'] = bld.env['pluginlib_PATTERN']
+
+ includes = None
+ if autowaf.is_child:
+ includes = '../..'
+
+ # Build plugin library
+ obj = bld(features = 'c cshlib',
+ env = penv,
+ source = 'synth.c',
+ name = 'synth',
+ target = '%s/synth' % bundle,
+ install_path = '${LV2DIR}/%s' % bundle,
+ uselib = 'LV2CORE',
+ includes = includes)
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-19 13:47:37 +0000