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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 "aom_dsp/mips/inv_txfm_msa.h"
void aom_iwht4x4_16_add_msa(const int16_t *input, uint8_t *dst,
int32_t dst_stride) {
v8i16 in0, in1, in2, in3;
v4i32 in0_r, in1_r, in2_r, in3_r, in4_r;
/* load vector elements of 4x4 block */
LD4x4_SH(input, in0, in2, in3, in1);
TRANSPOSE4x4_SH_SH(in0, in2, in3, in1, in0, in2, in3, in1);
UNPCK_R_SH_SW(in0, in0_r);
UNPCK_R_SH_SW(in2, in2_r);
UNPCK_R_SH_SW(in3, in3_r);
UNPCK_R_SH_SW(in1, in1_r);
SRA_4V(in0_r, in1_r, in2_r, in3_r, UNIT_QUANT_SHIFT);
in0_r += in2_r;
in3_r -= in1_r;
in4_r = (in0_r - in3_r) >> 1;
in1_r = in4_r - in1_r;
in2_r = in4_r - in2_r;
in0_r -= in1_r;
in3_r += in2_r;
TRANSPOSE4x4_SW_SW(in0_r, in1_r, in2_r, in3_r, in0_r, in1_r, in2_r, in3_r);
in0_r += in1_r;
in2_r -= in3_r;
in4_r = (in0_r - in2_r) >> 1;
in3_r = in4_r - in3_r;
in1_r = in4_r - in1_r;
in0_r -= in3_r;
in2_r += in1_r;
PCKEV_H4_SH(in0_r, in0_r, in1_r, in1_r, in2_r, in2_r, in3_r, in3_r, in0, in1,
in2, in3);
ADDBLK_ST4x4_UB(in0, in3, in1, in2, dst, dst_stride);
}
void aom_iwht4x4_1_add_msa(const int16_t *input, uint8_t *dst,
int32_t dst_stride) {
int16_t a1, e1;
v8i16 in1, in0 = { 0 };
a1 = input[0] >> UNIT_QUANT_SHIFT;
e1 = a1 >> 1;
a1 -= e1;
in0 = __msa_insert_h(in0, 0, a1);
in0 = __msa_insert_h(in0, 1, e1);
in0 = __msa_insert_h(in0, 2, e1);
in0 = __msa_insert_h(in0, 3, e1);
in1 = in0 >> 1;
in0 -= in1;
ADDBLK_ST4x4_UB(in0, in1, in1, in1, dst, dst_stride);
}
void aom_idct4x4_16_add_msa(const int16_t *input, uint8_t *dst,
int32_t dst_stride) {
v8i16 in0, in1, in2, in3;
/* load vector elements of 4x4 block */
LD4x4_SH(input, in0, in1, in2, in3);
/* rows */
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
AOM_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
/* columns */
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
AOM_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
/* rounding (add 2^3, divide by 2^4) */
SRARI_H4_SH(in0, in1, in2, in3, 4);
ADDBLK_ST4x4_UB(in0, in1, in2, in3, dst, dst_stride);
}
void aom_idct4x4_1_add_msa(const int16_t *input, uint8_t *dst,
int32_t dst_stride) {
int16_t out;
v8i16 vec;
out = ROUND_POWER_OF_TWO((input[0] * cospi_16_64), DCT_CONST_BITS);
out = ROUND_POWER_OF_TWO((out * cospi_16_64), DCT_CONST_BITS);
out = ROUND_POWER_OF_TWO(out, 4);
vec = __msa_fill_h(out);
ADDBLK_ST4x4_UB(vec, vec, vec, vec, dst, dst_stride);
}
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