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authorDavid Robillard <d@drobilla.net>2012-08-19 19:24:44 +0000
committerDavid Robillard <d@drobilla.net>2012-08-19 19:24:44 +0000
commit6a651aca0de7262e805ff8edb12cdc4692009997 (patch)
treef14451d008ea578c162df85d2e2605a227bf4bf6 /src/slew_limiter_2743.c
parent5de48cab1d561e6b37502fe823922b94d1489eda (diff)
Move omins to plugins directory.
git-svn-id: http://svn.drobilla.net/lad/trunk/plugins/omins.lv2@4725 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/slew_limiter_2743.c')
-rw-r--r--src/slew_limiter_2743.c259
1 files changed, 0 insertions, 259 deletions
diff --git a/src/slew_limiter_2743.c b/src/slew_limiter_2743.c
deleted file mode 100644
index b612f1d..0000000
--- a/src/slew_limiter_2743.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/* slew_limiter - A LADSPA plugin that limits the rate of change of a
- * signal. Increases and decreases in the signal can be
- * limited separately.
- *
- * Copyright 2005 Lars Luthman
- * LADSPA skeleton code taken from dahdsr_fexp.c by Loki Davison
- *
- * This plugin is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This plugin 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 GNU General Public License for
- * details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
- */
-
-#define _XOPEN_SOURCE 500 /* strdup */
-#include <stdlib.h>
-#include <ladspa.h>
-#include <math.h>
-
-/* This defines the number of "variants", i.e. the number of separate plugins
- in this file */
-#define SLIM_VARIANT_COUNT 2
-
-/* These are the port numbers */
-#define SLIM_INPUT 0
-#define SLIM_MAXRISE 1
-#define SLIM_MAXFALL 2
-#define SLIM_OUTPUT 3
-
-/* This is an array pointer to the descriptors of the different variants */
-LADSPA_Descriptor** slim_descriptors = 0;
-
-/* This is the data for a single instance of the plugin */
-typedef struct
-{
- LADSPA_Data* input;
- LADSPA_Data* maxrise;
- LADSPA_Data* maxfall;
- LADSPA_Data* reset;
- LADSPA_Data* output;
- LADSPA_Data srate;
- LADSPA_Data last_output;
-}
-SLim;
-
-/* LADSPA hosts use this function to get the plugin descriptors */
-const LADSPA_Descriptor* ladspa_descriptor(unsigned long index)
-{
- if (index < SLIM_VARIANT_COUNT)
- return slim_descriptors[index];
- return 0;
-}
-
-/* Clean up after a plugin instance */
-void cleanupSLim (LADSPA_Handle instance)
-{
- free(instance);
-}
-
-/* This is called when the hosts connects a port to a buffer */
-void connectPortSLim(LADSPA_Handle instance,
- unsigned long port, LADSPA_Data* data)
-{
- SLim* plugin = (SLim *)instance;
-
- switch (port) {
- case SLIM_INPUT:
- plugin->input = data;
- break;
- case SLIM_MAXRISE:
- plugin->maxrise = data;
- break;
- case SLIM_MAXFALL:
- plugin->maxfall = data;
- break;
- case SLIM_OUTPUT:
- plugin->output = data;
- break;
- }
-}
-
-/* The host uses this function to create an instance of a plugin */
-LADSPA_Handle instantiateSLim(const LADSPA_Descriptor * descriptor,
- unsigned long sample_rate)
-{
- SLim* plugin = (SLim*)calloc(1, sizeof(SLim));
- plugin->srate = (LADSPA_Data)sample_rate;
- return (LADSPA_Handle)plugin;
-}
-
-/* This is called before the hosts starts to use the plugin instance */
-void activateSLim(LADSPA_Handle instance)
-{
- SLim* plugin = (SLim*)instance;
- plugin->last_output = 0;
-}
-
-/* The run function! */
-void runSLim(LADSPA_Handle instance, unsigned long sample_count, int variant)
-{
- SLim* plugin = (SLim*)instance;
-
- if (plugin->input && plugin->output) {
- unsigned long i;
- LADSPA_Data maxrise, maxfall;
- for (i = 0; i < sample_count; ++i) {
-
- if (plugin->maxrise && variant == 0)
- maxrise = plugin->maxrise[i];
- else if (plugin->maxrise && variant == 1)
- maxrise = plugin->maxrise[0];
- else
- maxrise = 0;
-
- if (plugin->maxfall && variant == 0)
- maxfall = plugin->maxfall[i];
- else if (plugin->maxfall && variant == 1)
- maxfall = plugin->maxfall[0];
- else
- maxfall = 0;
-
- LADSPA_Data maxinc = maxrise / plugin->srate;
- LADSPA_Data maxdec = maxfall / plugin->srate;
- LADSPA_Data increment = plugin->input[i] - plugin->last_output;
- if (increment > maxinc)
- increment = maxinc;
- else if (increment < -maxdec)
- increment = -maxdec;
-
- plugin->output[i] = plugin->last_output + increment;
- plugin->last_output = plugin->output[i];
- }
- }
-}
-
-void runSLim_audio(LADSPA_Handle instance, unsigned long sample_count)
-{
- runSLim(instance, sample_count, 0);
-}
-
-void runSLim_control(LADSPA_Handle instance, unsigned long sample_count)
-{
- runSLim(instance, sample_count, 1);
-}
-
-/* Called automagically by the dynamic linker - set up global stuff here */
-void _init(void)
-{
- static const unsigned long ids[] = { 2743, 2744 };
- static const char * labels[] = { "slew_limiter_ra", "slew_limiter_rc" };
- static const char * names[] = { "Slew limiter (RA)", "Slew limiter (RC)" };
-
- char** port_names;
- LADSPA_PortDescriptor* port_descriptors;
- LADSPA_PortRangeHint* port_range_hints;
- LADSPA_Descriptor* descriptor;
-
- LADSPA_PortDescriptor input_port_descriptors[] =
- { LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO,
- LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO };
- LADSPA_PortDescriptor maxrise_port_descriptors[] =
- { LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO,
- LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL };
- LADSPA_PortDescriptor maxfall_port_descriptors[] =
- { LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO,
- LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL };
- LADSPA_PortDescriptor output_port_descriptors[] =
- { LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO,
- LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO };
-
- void (*run_functions[]) (LADSPA_Handle, unsigned long) = { runSLim_audio,
- runSLim_control };
-
- slim_descriptors = (LADSPA_Descriptor**)calloc(SLIM_VARIANT_COUNT,
- sizeof(LADSPA_Descriptor));
-
- if (slim_descriptors) {
- int i;
- for (i = 0; i < SLIM_VARIANT_COUNT; ++i) {
- slim_descriptors[i] =
- (LADSPA_Descriptor*)malloc(sizeof(LADSPA_Descriptor));
- descriptor = slim_descriptors[i];
- if (descriptor) {
- descriptor->UniqueID = ids[i];
- descriptor->Label = labels[i];
- descriptor->Properties = LADSPA_PROPERTY_HARD_RT_CAPABLE;
- descriptor->Name = names[i];
- descriptor->Maker = "Lars Luthman <larsl@users.sourceforge.net>";
- descriptor->Copyright = "GPL";
- descriptor->PortCount = 4;
-
- port_descriptors =
- (LADSPA_PortDescriptor*)calloc(4, sizeof(LADSPA_PortDescriptor));
- descriptor->PortDescriptors =
- (const LADSPA_PortDescriptor*)port_descriptors;
- port_range_hints =
- (LADSPA_PortRangeHint*)calloc(4, sizeof(LADSPA_PortRangeHint));
- descriptor->PortRangeHints =
- (const LADSPA_PortRangeHint*)port_range_hints;
-
- port_names = (char**)calloc(9, sizeof (char*));
- descriptor->PortNames = (const char**)port_names;
-
- /* Parameters for Input */
- port_descriptors[SLIM_INPUT] = input_port_descriptors[i];
- port_names[SLIM_INPUT] = "Input";
-
- /* Parameters for Rise rate */
- port_descriptors[SLIM_MAXRISE] = maxrise_port_descriptors[i];
- port_names[SLIM_MAXRISE] = "Rise rate (1/s)";
-
- /* Parameters for Fall rate */
- port_descriptors[SLIM_MAXFALL] = maxfall_port_descriptors[i];
- port_names[SLIM_MAXFALL] = "Fall rate (1/s)";
-
- /* Parameters for Output*/
- port_descriptors[SLIM_OUTPUT] = output_port_descriptors[i];
- port_names[SLIM_OUTPUT] = "Output";
-
- descriptor->activate = activateSLim;
- descriptor->cleanup = cleanupSLim;
- descriptor->connect_port = connectPortSLim;
- descriptor->deactivate = NULL;
- descriptor->instantiate = instantiateSLim;
- descriptor->run = run_functions[i];
- descriptor->run_adding = NULL;
- descriptor->set_run_adding_gain = NULL;
- }
- }
- }
-}
-
-/* Called automagically by the dynamic linker - free global stuff here */
-void _fini(void)
-{
- LADSPA_Descriptor* descriptor;
- int i;
-
- if (slim_descriptors) {
- for (i = 0; i < SLIM_VARIANT_COUNT; i++) {
- descriptor = slim_descriptors[i];
- if (descriptor) {
- free((LADSPA_PortDescriptor*)descriptor->PortDescriptors);
- free((char**)descriptor->PortNames);
- free((LADSPA_PortRangeHint*)descriptor->PortRangeHints);
- free(descriptor);
- }
- }
- free(slim_descriptors);
- }
-}