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sq_decoder_shadow_vector_debug.c
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sq_decoder_shadow_vector_debug.c
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#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "ladspa.h"
#define INPUT_LEFT_I 0
#define INPUT_RIGHT_I 1
#define INPUT_LEFT_J 2
#define INPUT_RIGHT_J 3
#define OUTPUT_LEFT_FRONT 4
#define OUTPUT_RIGHT_FRONT 5
#define OUTPUT_LEFT_BACK 6
#define OUTPUT_RIGHT_BACK 7
// #define PORTCOUNT 8
#define OUTPUT_DEBUG1 8
#define OUTPUT_DEBUG2 9
#define OUTPUT_DEBUG3 10
#define PORTCOUNT 11
static LADSPA_Descriptor* sqDecoderShadowVectorDescriptor = NULL;
typedef struct {
float* buffer;
unsigned long buffer_size;
unsigned long current_pos;
double sum;
} average_t;
float get_average(float sample, average_t* av_buf) {
av_buf->sum = av_buf->sum - av_buf->buffer[av_buf->current_pos];
av_buf->buffer[av_buf->current_pos] = sample;
av_buf->sum = av_buf->sum + sample;
av_buf->current_pos++;
if (av_buf->current_pos == av_buf->buffer_size) {
av_buf->current_pos = 0;
}
return (float) (av_buf->sum / (float) av_buf->buffer_size);
}
typedef struct {
LADSPA_Data* input_left_i;
LADSPA_Data* input_right_i;
LADSPA_Data* input_left_j;
LADSPA_Data* input_right_j;
LADSPA_Data* output_left_front;
LADSPA_Data* output_right_front;
LADSPA_Data* output_left_back;
LADSPA_Data* output_right_back;
LADSPA_Data* output_debug1;
LADSPA_Data* output_debug2;
LADSPA_Data* output_debug3;
average_t* aCF_average;
average_t* aCB_average;
average_t* aLB_average;
average_t* aRB_average;
average_t* aLF_average;
average_t* aRF_average;
} SqDecoderShadowVector;
const LADSPA_Descriptor* ladspa_descriptor(unsigned long index) {
switch (index) {
case 0:
return sqDecoderShadowVectorDescriptor;
default:
return NULL;
}
}
static void cleanupSqDecoderShadowVector(LADSPA_Handle instance) {
SqDecoderShadowVector* plugin_data = (SqDecoderShadowVector*) instance;
free(plugin_data->aCF_average->buffer);
free(plugin_data->aCF_average);
free(plugin_data->aCB_average->buffer);
free(plugin_data->aCB_average);
free(plugin_data->aLB_average->buffer);
free(plugin_data->aLB_average);
free(plugin_data->aRB_average->buffer);
free(plugin_data->aRB_average);
free(plugin_data->aLF_average->buffer);
free(plugin_data->aLF_average);
free(plugin_data->aRF_average->buffer);
free(plugin_data->aRF_average);
free(instance);
}
static void connectPortSqDecoderShadowVector(LADSPA_Handle instance, unsigned long port, LADSPA_Data *data) {
SqDecoderShadowVector* plugin;
plugin = (SqDecoderShadowVector *) instance;
switch (port) {
case INPUT_LEFT_I:
plugin->input_left_i = data;
break;
case INPUT_RIGHT_I:
plugin->input_right_i = data;
break;
case INPUT_LEFT_J:
plugin->input_left_j = data;
break;
case INPUT_RIGHT_J:
plugin->input_right_j = data;
break;
case OUTPUT_LEFT_FRONT:
plugin->output_left_front = data;
break;
case OUTPUT_RIGHT_FRONT:
plugin->output_right_front = data;
break;
case OUTPUT_LEFT_BACK:
plugin->output_left_back = data;
break;
case OUTPUT_RIGHT_BACK:
plugin->output_right_back = data;
break;
case OUTPUT_DEBUG1:
plugin->output_debug1 = data;
break;
case OUTPUT_DEBUG2:
plugin->output_debug2 = data;
break;
case OUTPUT_DEBUG3:
plugin->output_debug3 = data;
break;
}
}
static LADSPA_Handle instantiateSqDecoderShadowVector(const LADSPA_Descriptor *descriptor, unsigned long s_rate) {
SqDecoderShadowVector* plugin_data = (SqDecoderShadowVector*) calloc(1, sizeof (SqDecoderShadowVector));
plugin_data->aCF_average = malloc(sizeof (average_t));
unsigned long aCF_average_buffer_len = s_rate / 20; // 20 Hz
plugin_data->aCF_average->buffer = calloc(aCF_average_buffer_len, sizeof (float));
plugin_data->aCF_average->buffer_size = aCF_average_buffer_len;
plugin_data->aCF_average->current_pos = 0;
plugin_data->aCF_average->sum = 0;
plugin_data->aCB_average = malloc(sizeof (average_t));
unsigned long aCB_average_buffer_len = s_rate / 20; // 20 Hz
plugin_data->aCB_average->buffer = calloc(aCB_average_buffer_len, sizeof (float));
plugin_data->aCB_average->buffer_size = aCB_average_buffer_len;
plugin_data->aCB_average->current_pos = 0;
plugin_data->aCB_average->sum = 0;
plugin_data->aLB_average = malloc(sizeof (average_t));
unsigned long aLB_average_buffer_len = s_rate / 20; // 20 Hz
plugin_data->aLB_average->buffer = calloc(aLB_average_buffer_len, sizeof (float));
plugin_data->aLB_average->buffer_size = aLB_average_buffer_len;
plugin_data->aLB_average->current_pos = 0;
plugin_data->aLB_average->sum = 0;
plugin_data->aRB_average = malloc(sizeof (average_t));
unsigned long aRB_average_buffer_len = s_rate / 20; // 20 Hz
plugin_data->aRB_average->buffer = calloc(aRB_average_buffer_len, sizeof (float));
plugin_data->aRB_average->buffer_size = aRB_average_buffer_len;
plugin_data->aRB_average->current_pos = 0;
plugin_data->aRB_average->sum = 0;
plugin_data->aLF_average = malloc(sizeof (average_t));
unsigned long aLF_average_buffer_len = s_rate / 20; // 20 Hz
plugin_data->aLF_average->buffer = calloc(aLF_average_buffer_len, sizeof (float));
plugin_data->aLF_average->buffer_size = aLF_average_buffer_len;
plugin_data->aLF_average->current_pos = 0;
plugin_data->aLF_average->sum = 0;
plugin_data->aRF_average = malloc(sizeof (average_t));
unsigned long aRF_average_buffer_len = s_rate / 20; // 20 Hz
plugin_data->aRF_average->buffer = calloc(aRF_average_buffer_len, sizeof (float));
plugin_data->aRF_average->buffer_size = aRF_average_buffer_len;
plugin_data->aRF_average->current_pos = 0;
plugin_data->aRF_average->sum = 0;
return (LADSPA_Handle) plugin_data;
}
static void runSqDecoderShadowVector(LADSPA_Handle instance, unsigned long sample_count) {
SqDecoderShadowVector* plugin_data = (SqDecoderShadowVector*) instance;
float input_left_i, input_right_i, input_left_j, input_right_j;
float output_front_left, output_front_right, output_back_left, output_back_right;
float x, aCF, aCB, x_s, x_ss, y, aLB, aRB, z, aLF, aRF;
for (unsigned long c = 0; c < sample_count; c++) {
input_left_i = plugin_data->input_left_i[c];
input_right_i = plugin_data->input_right_i[c];
input_left_j = plugin_data->input_left_j[c];
input_right_j = plugin_data->input_right_j[c];
/* Actual algorithm */
aCF = 0.7 * (input_left_i + input_right_i);
aCF = get_average(fabsf(aCF), plugin_data->aCF_average);
aCB = 0.7 * (input_left_i - input_right_i);
aCB = get_average(fabsf(aCB), plugin_data->aCB_average);
x = (aCF - aCB) / (aCF + aCB);
//FIXME: shaper circuits?
if (x > 0) {
x_s = 0;
} else {
x_s = -x;
}
//FIXME: shaper circuits?
if (x < 0) {
x_ss = 0;
} else {
x_ss = -x;
}
aLB = fabsf(-0.7 * input_left_j + 0.7 * input_right_i);
aLB = get_average(aLB, plugin_data->aLB_average);
aRB = fabsf(-0.7 * input_right_j + 0.7 * input_left_i);
aRB = get_average(aRB, plugin_data->aRB_average);
if (aLB + aRB == 0) {
y = 0;
} else {
y = (aLB - aRB) / (aLB + aRB);
}
aLF = fabsf(input_left_i);
aLF = get_average(aLF, plugin_data->aLF_average);
aRF = fabsf(input_right_i);
aRF = get_average(aRF, plugin_data->aRF_average);
/*
if (aLF > aRF) {
z = 1 - (aRF / aLF);
} else if (aLF < aRF) {
z = -1 + (aLF / aRF);
} else {
z = 0;
}
// FIXME: z is wrong in CR case
// z = -0.414;
*/
z = (aLF - aRF) / (aLF + aRF);
output_front_left = 0.707 * (input_left_i + x_s * (0.5 * input_right_i - 0.5 * input_left_i) + (((1 + y) / 2) * (-1) * input_right_j) + ((1 - y) / 2) * input_right_j);
output_front_right = 0.707 * (input_right_i + x_s * (0.5 * input_left_i - 0.5 * input_right_i) + (((1 + y) / 2) * input_left_j) + ((1 - y) / 2) * (-1) * input_left_j);
output_back_left = -x_ss * (0.25 * input_left_i + 0.25 * input_right_i - 0.25 * input_left_j - 0.25 * input_right_j) - ((1 + z) / 2) * input_right_i + ((1 - z) / 2) * input_left_j;
output_back_right = -x_ss * (0.25 * input_left_j + 0.25 * input_right_j - 0.25 * input_left_i - 0.25 * input_right_i) - ((1 + z) / 2) * input_right_j + ((1 - z) / 2) * input_left_i;
/* End of actual algorith */
plugin_data->output_left_front[c] = output_front_left;
plugin_data->output_right_front[c] = output_front_right;
plugin_data->output_left_back[c] = output_back_left;
plugin_data->output_right_back[c] = output_back_right;
plugin_data->output_debug1[c] = x;
plugin_data->output_debug2[c] = y;
plugin_data->output_debug3[c] = z;
}
}
void __attribute__((constructor)) swh_init() {
char **port_names;
LADSPA_PortDescriptor *port_descriptors;
LADSPA_PortRangeHint *port_range_hints;
sqDecoderShadowVectorDescriptor = (LADSPA_Descriptor*) malloc(sizeof (LADSPA_Descriptor));
if (sqDecoderShadowVectorDescriptor) {
sqDecoderShadowVectorDescriptor->UniqueID = 3828;
sqDecoderShadowVectorDescriptor->Label = "sq_decoder_shadow_vector_debug";
sqDecoderShadowVectorDescriptor->Properties = LADSPA_PROPERTY_HARD_RT_CAPABLE;
sqDecoderShadowVectorDescriptor->Name = "SQ decoder with shadow vector directional enhancement";
sqDecoderShadowVectorDescriptor->Maker = "Markko Merzin <[email protected]>";
sqDecoderShadowVectorDescriptor->Copyright = "GPL";
sqDecoderShadowVectorDescriptor->PortCount = PORTCOUNT;
port_descriptors = (LADSPA_PortDescriptor *) calloc(PORTCOUNT, sizeof (LADSPA_PortDescriptor));
sqDecoderShadowVectorDescriptor->PortDescriptors = (const LADSPA_PortDescriptor *) port_descriptors;
port_range_hints = (LADSPA_PortRangeHint *) calloc(PORTCOUNT, sizeof (LADSPA_PortRangeHint));
sqDecoderShadowVectorDescriptor->PortRangeHints = (const LADSPA_PortRangeHint *) port_range_hints;
port_names = (char **) calloc(PORTCOUNT, sizeof (char*));
sqDecoderShadowVectorDescriptor->PortNames = (const char **) port_names;
port_descriptors[INPUT_LEFT_I] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
port_names[INPUT_LEFT_I] = "Left Input I";
port_range_hints[INPUT_LEFT_I].HintDescriptor = 0;
port_descriptors[INPUT_RIGHT_I] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
port_names[INPUT_RIGHT_I] = "Right Input I";
port_range_hints[INPUT_RIGHT_I].HintDescriptor = 0;
port_descriptors[INPUT_LEFT_J] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
port_names[INPUT_LEFT_J] = "Left Input J";
port_range_hints[INPUT_LEFT_J].HintDescriptor = 0;
port_descriptors[INPUT_RIGHT_J] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
port_names[INPUT_RIGHT_J] = "Right Input J";
port_range_hints[INPUT_RIGHT_J].HintDescriptor = 0;
port_descriptors[OUTPUT_LEFT_FRONT] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[OUTPUT_LEFT_FRONT] = "Left front output";
port_range_hints[OUTPUT_LEFT_FRONT].HintDescriptor = 0;
port_descriptors[OUTPUT_RIGHT_FRONT] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[OUTPUT_RIGHT_FRONT] = "Right front output";
port_range_hints[OUTPUT_RIGHT_FRONT].HintDescriptor = 0;
port_descriptors[OUTPUT_LEFT_BACK] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[OUTPUT_LEFT_BACK] = "Left back output";
port_range_hints[OUTPUT_LEFT_BACK].HintDescriptor = 0;
port_descriptors[OUTPUT_RIGHT_BACK] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[OUTPUT_RIGHT_BACK] = "Right back output";
port_range_hints[OUTPUT_RIGHT_BACK].HintDescriptor = 0;
port_descriptors[OUTPUT_DEBUG1] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[OUTPUT_DEBUG1] = "Debug1 output, whatever its used for currently";
port_range_hints[OUTPUT_DEBUG1].HintDescriptor = 0;
port_descriptors[OUTPUT_DEBUG2] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[OUTPUT_DEBUG2] = "Debug2 output, whatever its used for currently";
port_range_hints[OUTPUT_DEBUG2].HintDescriptor = 0;
port_descriptors[OUTPUT_DEBUG3] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[OUTPUT_DEBUG3] = "Debug3 output, whatever its used for currently";
port_range_hints[OUTPUT_DEBUG3].HintDescriptor = 0;
sqDecoderShadowVectorDescriptor->activate = NULL;
sqDecoderShadowVectorDescriptor->cleanup = cleanupSqDecoderShadowVector;
sqDecoderShadowVectorDescriptor->connect_port = connectPortSqDecoderShadowVector;
sqDecoderShadowVectorDescriptor->deactivate = NULL;
sqDecoderShadowVectorDescriptor->instantiate = instantiateSqDecoderShadowVector;
sqDecoderShadowVectorDescriptor->run = runSqDecoderShadowVector;
sqDecoderShadowVectorDescriptor->run_adding = NULL;
sqDecoderShadowVectorDescriptor->set_run_adding_gain = NULL;
}
}
void __attribute__((destructor)) swh_fini() {
if (sqDecoderShadowVectorDescriptor) {
free((LADSPA_PortDescriptor *) sqDecoderShadowVectorDescriptor->PortDescriptors);
free((char **) sqDecoderShadowVectorDescriptor->PortNames);
free((LADSPA_PortRangeHint *) sqDecoderShadowVectorDescriptor->PortRangeHints);
free(sqDecoderShadowVectorDescriptor);
}
sqDecoderShadowVectorDescriptor = NULL;
}