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/*
* 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.
*/
#include <assert.h>
#include "av1/common/enums.h"
void av1_fwht4x4_msa(const int16_t *input, int16_t *output,
int32_t src_stride) {
v8i16 in0, in1, in2, in3, in4;
LD_SH4(input, src_stride, in0, in1, in2, in3);
in0 += in1;
in3 -= in2;
in4 = (in0 - in3) >> 1;
SUB2(in4, in1, in4, in2, in1, in2);
in0 -= in2;
in3 += in1;
TRANSPOSE4x4_SH_SH(in0, in2, in3, in1, in0, in2, in3, in1);
in0 += in2;
in1 -= in3;
in4 = (in0 - in1) >> 1;
SUB2(in4, in2, in4, in3, in2, in3);
in0 -= in3;
in1 += in2;
SLLI_4V(in0, in1, in2, in3, 2);
TRANSPOSE4x4_SH_SH(in0, in3, in1, in2, in0, in3, in1, in2);
ST4x2_UB(in0, output, 4);
ST4x2_UB(in3, output + 4, 4);
ST4x2_UB(in1, output + 8, 4);
ST4x2_UB(in2, output + 12, 4);
}
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