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/*
* Copyright 1994-2022 Olivier Girondel
*
* This file is part of lebiniou.
*
* lebiniou 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.
*
* lebiniou 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 lebiniou. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __SHAKER_H
#define __SHAKER_H
#include "parameters.h"
#define SOUND_DISTURB_K 127
static double volume_scale = 1;
json_t *
get_parameters(const uint8_t fetch_all)
{
json_t *params = json_object();
plugin_parameters_add_double(params, BPP_VOLUME_SCALE, volume_scale, 0.1, 10, 0.1, "Volume scale");
return params;
}
void
set_parameters(const Context_t *ctx, const json_t *in_parameters)
{
plugin_parameter_parse_double_range(in_parameters, BPP_VOLUME_SCALE, &volume_scale);
}
json_t *
parameters(const Context_t *ctx, const json_t *in_parameters, const uint8_t fetch_all)
{
if (NULL != in_parameters) {
set_parameters(ctx, in_parameters);
}
return get_parameters(fetch_all);
}
static inline void
check_width(short *value)
{
if (*value < 0) {
*value += WIDTH;
} else if (*value >= (short)WIDTH) {
*value -= WIDTH;
}
}
static inline void
check_height(short *value)
{
if (*value < 0) {
*value += HEIGHT;
} else if (*value >= (short)HEIGHT) {
*value -= HEIGHT;
}
}
static inline void
displace(const Buffer8_t *src, Buffer8_t *dst,
short i, short j, short dx, short dy)
{
if ((i < SOUND_DISTURB_K) || (i > MAXX - SOUND_DISTURB_K)) {
check_width(&dx);
}
if ((j < SOUND_DISTURB_K) || (j > MAXY - SOUND_DISTURB_K)) {
check_height(&dy);
}
set_pixel_nc(dst, i, j, get_pixel_nc(src, dx, dy));
}
#endif /* __SHAKER_H */
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