28 строки
1.1 KiB
C
28 строки
1.1 KiB
C
/*
|
|
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
|
|
*
|
|
* This source code is subject to the terms of the BSD 2 Clause License and
|
|
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
|
|
* was not distributed with this source code in the LICENSE file, you can
|
|
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
|
|
* Media Patent License 1.0 was not distributed with this source code in the
|
|
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
|
|
*/
|
|
#ifndef AV1_COMMON_CDEF_SIMD_H_
|
|
#define AV1_COMMON_CDEF_SIMD_H_
|
|
|
|
#include "aom_dsp/aom_simd.h"
|
|
|
|
// sign(a-b) * min(abs(a-b), max(0, threshold - (abs(a-b) >> adjdamp)))
|
|
SIMD_INLINE v128 constrain16(v128 a, v128 b, unsigned int threshold,
|
|
unsigned int adjdamp) {
|
|
v128 diff = v128_sub_16(a, b);
|
|
const v128 sign = v128_shr_n_s16(diff, 15);
|
|
diff = v128_abs_s16(diff);
|
|
const v128 s =
|
|
v128_ssub_u16(v128_dup_16(threshold), v128_shr_u16(diff, adjdamp));
|
|
return v128_xor(v128_add_16(sign, v128_min_s16(diff, s)), sign);
|
|
}
|
|
|
|
#endif // AV1_COMMON_CDEF_SIMD_H_
|