blob: f6850a5dd9a97601a360b0b2460e2ccea89a3c1b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/* television modulator
*
* (C) 2017 by Andreas Eversberg <jolly@eversberg.eu>
* All Rights Reserved
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <math.h>
#include <stdint.h>
#include "../libsample/sample.h"
#include "tv_modulate.h"
#define WHITE_MODULATION 0.1
void tv_modulate(float *buff, int count, sample_t *bas, double amplitude)
{
int i, ss = 0;
for (i = 0; i < count; i++) {
buff[ss++] = ((1.0 - bas[i]) * (1.0 - WHITE_MODULATION) + WHITE_MODULATION) * amplitude;
buff[ss++] = 0;
}
}
|
