blob: 682b44419928022b80e67ea9e5a0501f2b1953c9 [file] [log] [blame]
/*
* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdlib.h>
#include "./vpx_config.h"
#include "./vpx_dsp_rtcd.h"
#include "vpx/vpx_integer.h"
#include "vpx_ports/mem.h"
void vpx_plane_add_noise_c(uint8_t *start, char *noise,
char blackclamp[16],
char whiteclamp[16],
char bothclamp[16],
unsigned int width, unsigned int height, int pitch) {
unsigned int i, j;
for (i = 0; i < height; i++) {
uint8_t *pos = start + i * pitch;
char *ref = (char *)(noise + (rand() & 0xff)); // NOLINT
for (j = 0; j < width; j++) {
int v = pos[j];
v = clamp(v - blackclamp[0], 0, 255);
v = clamp(v + bothclamp[0], 0, 255);
v = clamp(v - whiteclamp[0], 0, 255);
pos[j] = v + ref[j];
}
}
}