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#include <stdlib.h>
#include <string.h>
#ifndef WIN32
#include "config.h"
#endif
#ifdef ENABLE_NLS
#include <libintl.h>
#endif
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#include <math.h>
#include "ladspa.h"
#ifdef WIN32
#define _WINDOWS_DLL_EXPORT_ __declspec(dllexport)
int bIsFirstTime = 1;
void _init(); // forward declaration
#else
#define _WINDOWS_DLL_EXPORT_
#endif
#define FOVERDRIVE_DRIVE 0
#define FOVERDRIVE_INPUT 1
#define FOVERDRIVE_OUTPUT 2
static LADSPA_Descriptor *foverdriveDescriptor = NULL;
typedef struct {
LADSPA_Data *drive;
LADSPA_Data *input;
LADSPA_Data *output;
LADSPA_Data run_adding_gain;
} Foverdrive;
_WINDOWS_DLL_EXPORT_
const LADSPA_Descriptor *ladspa_descriptor(unsigned long index) {
#ifdef WIN32
if (bIsFirstTime) {
_init();
bIsFirstTime = 0;
}
#endif
switch (index) {
case 0:
return foverdriveDescriptor;
default:
return NULL;
}
}
static void cleanupFoverdrive(LADSPA_Handle instance) {
free(instance);
}
static void connectPortFoverdrive(
LADSPA_Handle instance,
unsigned long port,
LADSPA_Data *data) {
Foverdrive *plugin;
plugin = (Foverdrive *)instance;
switch (port) {
case FOVERDRIVE_DRIVE:
plugin->drive = data;
break;
case FOVERDRIVE_INPUT:
plugin->input = data;
break;
case FOVERDRIVE_OUTPUT:
plugin->output = data;
break;
}
}
static LADSPA_Handle instantiateFoverdrive(
const LADSPA_Descriptor *descriptor,
unsigned long s_rate) {
Foverdrive *plugin_data = (Foverdrive *)malloc(sizeof(Foverdrive));
plugin_data->run_adding_gain = 1.0f;
return (LADSPA_Handle)plugin_data;
}
#undef buffer_write
#undef RUN_ADDING
#undef RUN_REPLACING
#define buffer_write(b, v) (b = v)
#define RUN_ADDING 0
#define RUN_REPLACING 1
static void runFoverdrive(LADSPA_Handle instance, unsigned long sample_count) {
Foverdrive *plugin_data = (Foverdrive *)instance;
/* Drive level (float value) */
const LADSPA_Data drive = *(plugin_data->drive);
/* Input (array of floats of length sample_count) */
const LADSPA_Data * const input = plugin_data->input;
/* Output (array of floats of length sample_count) */
LADSPA_Data * const output = plugin_data->output;
#line 16 "foverdrive_1196.xml"
unsigned long pos;
const float drivem1 = drive - 1.0f;
for (pos = 0; pos < sample_count; pos++) {
LADSPA_Data x = input[pos];
const float fx = fabs(x);
buffer_write(output[pos], x*(fx + drive)/(x*x + drivem1*fx + 1.0f));
}
}
#undef buffer_write
#undef RUN_ADDING
#undef RUN_REPLACING
#define buffer_write(b, v) (b += (v) * run_adding_gain)
#define RUN_ADDING 1
#define RUN_REPLACING 0
static void setRunAddingGainFoverdrive(LADSPA_Handle instance, LADSPA_Data gain) {
((Foverdrive *)instance)->run_adding_gain = gain;
}
static void runAddingFoverdrive(LADSPA_Handle instance, unsigned long sample_count) {
Foverdrive *plugin_data = (Foverdrive *)instance;
LADSPA_Data run_adding_gain = plugin_data->run_adding_gain;
/* Drive level (float value) */
const LADSPA_Data drive = *(plugin_data->drive);
/* Input (array of floats of length sample_count) */
const LADSPA_Data * const input = plugin_data->input;
/* Output (array of floats of length sample_count) */
LADSPA_Data * const output = plugin_data->output;
#line 16 "foverdrive_1196.xml"
unsigned long pos;
const float drivem1 = drive - 1.0f;
for (pos = 0; pos < sample_count; pos++) {
LADSPA_Data x = input[pos];
const float fx = fabs(x);
buffer_write(output[pos], x*(fx + drive)/(x*x + drivem1*fx + 1.0f));
}
}
void _init() {
char **port_names;
LADSPA_PortDescriptor *port_descriptors;
LADSPA_PortRangeHint *port_range_hints;
#ifdef ENABLE_NLS
#define D_(s) dgettext(PACKAGE, s)
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, PACKAGE_LOCALE_DIR);
#else
#define D_(s) (s)
#endif
foverdriveDescriptor =
(LADSPA_Descriptor *)malloc(sizeof(LADSPA_Descriptor));
if (foverdriveDescriptor) {
foverdriveDescriptor->UniqueID = 1196;
foverdriveDescriptor->Label = "foverdrive";
foverdriveDescriptor->Properties =
LADSPA_PROPERTY_HARD_RT_CAPABLE;
foverdriveDescriptor->Name =
D_("Fast overdrive");
foverdriveDescriptor->Maker =
"Steve Harris <steve@plugin.org.uk>";
foverdriveDescriptor->Copyright =
"GPL";
foverdriveDescriptor->PortCount = 3;
port_descriptors = (LADSPA_PortDescriptor *)calloc(3,
sizeof(LADSPA_PortDescriptor));
foverdriveDescriptor->PortDescriptors =
(const LADSPA_PortDescriptor *)port_descriptors;
port_range_hints = (LADSPA_PortRangeHint *)calloc(3,
sizeof(LADSPA_PortRangeHint));
foverdriveDescriptor->PortRangeHints =
(const LADSPA_PortRangeHint *)port_range_hints;
port_names = (char **)calloc(3, sizeof(char*));
foverdriveDescriptor->PortNames =
(const char **)port_names;
/* Parameters for Drive level */
port_descriptors[FOVERDRIVE_DRIVE] =
LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
port_names[FOVERDRIVE_DRIVE] =
D_("Drive level");
port_range_hints[FOVERDRIVE_DRIVE].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE | LADSPA_HINT_DEFAULT_MINIMUM;
port_range_hints[FOVERDRIVE_DRIVE].LowerBound = 1;
port_range_hints[FOVERDRIVE_DRIVE].UpperBound = 3;
/* Parameters for Input */
port_descriptors[FOVERDRIVE_INPUT] =
LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
port_names[FOVERDRIVE_INPUT] =
D_("Input");
port_range_hints[FOVERDRIVE_INPUT].HintDescriptor = 0;
/* Parameters for Output */
port_descriptors[FOVERDRIVE_OUTPUT] =
LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[FOVERDRIVE_OUTPUT] =
D_("Output");
port_range_hints[FOVERDRIVE_OUTPUT].HintDescriptor = 0;
foverdriveDescriptor->activate = NULL;
foverdriveDescriptor->cleanup = cleanupFoverdrive;
foverdriveDescriptor->connect_port = connectPortFoverdrive;
foverdriveDescriptor->deactivate = NULL;
foverdriveDescriptor->instantiate = instantiateFoverdrive;
foverdriveDescriptor->run = runFoverdrive;
foverdriveDescriptor->run_adding = runAddingFoverdrive;
foverdriveDescriptor->set_run_adding_gain = setRunAddingGainFoverdrive;
}
}
void _fini() {
if (foverdriveDescriptor) {
free((LADSPA_PortDescriptor *)foverdriveDescriptor->PortDescriptors);
free((char **)foverdriveDescriptor->PortNames);
free((LADSPA_PortRangeHint *)foverdriveDescriptor->PortRangeHints);
free(foverdriveDescriptor);
}
}
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