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Correcting all levels and move all remaining integer samples to sample_t

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The leves are based on the standards of each mobile network. They
are adjusted to the specified frequency deviation now.
This commit is contained in:
Andreas Eversberg
2017-01-29 07:25:12 +01:00
parent bd7ccc5fa0
commit 7e45f556ce
38 changed files with 484 additions and 397 deletions
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13
src/common/emphasis.c
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@@ -21,6 +21,7 @@
#include <stdint.h>
#include <string.h>
#include <math.h>
#include "sample.h"
#include "filter.h"
#include "emphasis.h"
#include "debug.h"
@@ -29,7 +30,7 @@
#define CUT_OFF_H 100.0 /* cut-off frequency for high-pass filter */
static void gen_sine(double *samples, int num, int samplerate, double freq)
static void gen_sine(sample_t *samples, int num, int samplerate, double freq)
{
int i;
@@ -37,7 +38,7 @@ static void gen_sine(double *samples, int num, int samplerate, double freq)
samples[i] = cos(2.0 * M_PI * freq / (double)samplerate * (double)i);
}
static double get_level(double *samples, int num)
static double get_level(sample_t *samples, int num)
{
int i;
double envelope = 0;
@@ -52,7 +53,7 @@ static double get_level(double *samples, int num)
int init_emphasis(emphasis_t *state, int samplerate, double cut_off)
{
double factor;
double test_samples[samplerate / 10];
sample_t test_samples[samplerate / 10];
memset(state, 0, sizeof(*state));
@@ -78,7 +79,7 @@ int init_emphasis(emphasis_t *state, int samplerate, double cut_off)
return 0;
}
void pre_emphasis(emphasis_t *state, double *samples, int num)
void pre_emphasis(emphasis_t *state, sample_t *samples, int num)
{
double x, y, x_last, factor, amp;
int i;
@@ -101,7 +102,7 @@ void pre_emphasis(emphasis_t *state, double *samples, int num)
state->p.x_last = x_last;
}
void de_emphasis(emphasis_t *state, double *samples, int num)
void de_emphasis(emphasis_t *state, sample_t *samples, int num)
{
double x, y, y_last, factor, amp;
int i;
@@ -125,7 +126,7 @@ void de_emphasis(emphasis_t *state, double *samples, int num)
}
/* high pass filter to remove DC and low frequencies */
void dc_filter(emphasis_t *state, double *samples, int num)
void dc_filter(emphasis_t *state, sample_t *samples, int num)
{
filter_process(&state->d.hp, samples, num);
}