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/*
* Copyright (c) 2016 Hanspeter Portner (dev@open-music-kontrollers.ch)
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the Artistic License 2.0 as published by
* The Perl Foundation.
*
* This source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Artistic License 2.0 for more details.
*
* You should have received a copy of the Artistic License 2.0
* along the source as a COPYING file. If not, obtain it from
* http://www.perlfoundation.org/artistic_license_2_0.
*/
#include <stdlib.h>
#include <canvas.h>
typedef struct _plughandle_t plughandle_t;
struct _plughandle_t {
const LV2_Atom_Sequence *control;
LV2_Atom_Sequence *notify;
};
static LV2_Handle
instantiate(const LV2_Descriptor* descriptor, double rate,
const char *bundle_path, const LV2_Feature *const *features)
{
plughandle_t *handle = calloc(1, sizeof(plughandle_t));
if(!handle)
return NULL;
return handle;
}
static void
connect_port(LV2_Handle instance, uint32_t port, void *data)
{
plughandle_t *handle = instance;
switch(port)
{
case 0:
handle->control = data;
break;
case 1:
handle->notify = data;
break;
default:
break;
}
}
static void
run(LV2_Handle instance, uint32_t nsamples)
{
plughandle_t *handle = instance;
const uint32_t sz = lv2_atom_total_size(&handle->control->atom);
memcpy(handle->notify, handle->control, sz);
}
static void
cleanup(LV2_Handle instance)
{
plughandle_t *handle = instance;
free(handle);
}
const LV2_Descriptor canvas_canvas = {
.URI = CANVAS_CANVAS_URI,
.instantiate = instantiate,
.connect_port = connect_port,
.activate = NULL,
.run = run,
.deactivate = NULL,
.cleanup = cleanup,
.extension_data = NULL
};
LV2_SYMBOL_EXPORT const LV2_Descriptor*
lv2_descriptor(uint32_t index)
{
switch(index)
{
case 0:
return &canvas_canvas;
default:
return NULL;
}
}
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