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/*
* Copyright (c) 2022 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 <stdint.h>
#include "./vp8_rtcd.h"
#include "vpx_util/loongson_intrinsics.h"
#define LSX_TRANSPOSE4x4_H(_in0, _in1, _in2, _in3, _out0, _out1, _out2, _out3) \
{ \
__m128i _s0, _s1, _s2, _s3, _t0, _t1, _t2, _t3; \
\
DUP2_ARG2(__lsx_vilvl_h, _in2, _in0, _in3, _in1, _s0, _s1); \
DUP2_ARG2(__lsx_vilvh_h, _in2, _in0, _in3, _in1, _s2, _s3); \
_t0 = __lsx_vilvl_h(_s1, _s0); \
_t1 = __lsx_vilvh_h(_s1, _s0); \
_t2 = __lsx_vilvl_h(_s3, _s2); \
_t3 = __lsx_vilvh_h(_s3, _s2); \
DUP2_ARG2(__lsx_vpickev_d, _t2, _t0, _t3, _t1, _out0, _out2); \
DUP2_ARG2(__lsx_vpickod_d, _t2, _t0, _t3, _t1, _out1, _out3); \
}
#define SET_DOTP_VALUES(coeff, val0, val1, val2, const1, const2) \
{ \
__m128i tmp0_m, tmp1_m, tmp2_m; \
\
tmp0_m = __lsx_vreplvei_h(coeff, val0); \
DUP2_ARG2(__lsx_vreplvei_h, coeff, val1, coeff, val2, tmp1_m, tmp2_m); \
DUP2_ARG2(__lsx_vpackev_h, tmp1_m, tmp0_m, tmp0_m, tmp2_m, const1, \
const2); \
}
#define RET_1_IF_NZERO_H(_in) \
({ \
__m128i tmp_m; \
__m128i one_m = __lsx_vldi(0x401); \
__m128i max_m = __lsx_vldi(0xFF); \
\
tmp_m = __lsx_vseqi_h(_in, 0); \
tmp_m = __lsx_vxor_v(tmp_m, max_m); \
tmp_m = __lsx_vand_v(tmp_m, one_m); \
\
tmp_m; \
})
void vp8_short_fdct4x4_lsx(int16_t *input, int16_t *output, int32_t pitch) {
__m128i in0, in1, in2, in3;
__m128i tmp0, tmp1, tmp2, tmp3, const0, const1;
__m128i coeff = { 0x38a4eb1814e808a9, 0x659061a82ee01d4c };
__m128i out0, out1, out2, out3;
__m128i zero = __lsx_vldi(0);
int32_t pitch2 = pitch << 1;
int32_t pitch3 = pitch2 + pitch;
in0 = __lsx_vld(input, 0);
DUP2_ARG2(__lsx_vldx, input, pitch, input, pitch2, in1, in2);
in3 = __lsx_vldx(input, pitch3);
LSX_TRANSPOSE4x4_H(in0, in1, in2, in3, in0, in1, in2, in3);
LSX_BUTTERFLY_4_H(in0, in1, in2, in3, tmp0, tmp1, in1, in3);
DUP4_ARG2(__lsx_vslli_h, tmp0, 3, tmp1, 3, in1, 3, in3, 3, tmp0, tmp1, in1,
in3);
in0 = __lsx_vadd_h(tmp0, tmp1);
in2 = __lsx_vsub_h(tmp0, tmp1);
SET_DOTP_VALUES(coeff, 0, 1, 2, const0, const1);
tmp0 = __lsx_vilvl_h(in3, in1);
in1 = __lsx_vreplvei_h(coeff, 3);
out0 = __lsx_vpackev_h(zero, in1);
coeff = __lsx_vilvl_h(zero, coeff);
out1 = __lsx_vreplvei_w(coeff, 0);
DUP2_ARG3(__lsx_vdp2add_w_h, out0, tmp0, const0, out1, tmp0, const1, out0,
out1);
DUP2_ARG3(__lsx_vsrani_h_w, out0, out0, 12, out1, out1, 12, in1, in3);
LSX_TRANSPOSE4x4_H(in0, in1, in2, in3, in0, in1, in2, in3);
LSX_BUTTERFLY_4_H(in0, in1, in2, in3, tmp0, tmp1, in1, in3);
tmp2 = __lsx_vadd_h(tmp0, tmp1);
tmp3 = __lsx_vsub_h(tmp0, tmp1);
DUP2_ARG2(__lsx_vaddi_hu, tmp2, 7, tmp3, 7, in0, in2);
DUP2_ARG2(__lsx_vsrai_h, in0, 4, in2, 4, in0, in2);
DUP2_ARG2(__lsx_vilvl_h, zero, in0, zero, in2, out0, out2);
tmp1 = RET_1_IF_NZERO_H(in3);
DUP2_ARG2(__lsx_vilvl_h, zero, tmp1, in3, in1, tmp1, tmp0);
DUP2_ARG2(__lsx_vreplvei_w, coeff, 2, coeff, 3, out3, out1);
out3 = __lsx_vadd_w(out3, out1);
out1 = __lsx_vreplvei_w(coeff, 1);
DUP2_ARG3(__lsx_vdp2add_w_h, out1, tmp0, const0, out3, tmp0, const1, out1,
out3);
DUP2_ARG2(__lsx_vsrai_w, out1, 16, out3, 16, out1, out3);
out1 = __lsx_vadd_w(out1, tmp1);
DUP2_ARG2(__lsx_vpickev_h, out1, out0, out3, out2, in0, in2);
__lsx_vst(in0, output, 0);
__lsx_vst(in2, output, 16);
}
void vp8_short_fdct8x4_lsx(int16_t *input, int16_t *output, int32_t pitch) {
__m128i in0, in1, in2, in3, temp0, temp1, tmp0, tmp1;
__m128i const0, const1, const2, vec0_w, vec1_w, vec2_w, vec3_w;
__m128i coeff = { 0x38a4eb1814e808a9, 0x659061a82ee01d4c };
__m128i zero = __lsx_vldi(0);
int32_t pitch2 = pitch << 1;
int32_t pitch3 = pitch2 + pitch;
in0 = __lsx_vld(input, 0);
DUP2_ARG2(__lsx_vldx, input, pitch, input, pitch2, in1, in2);
in3 = __lsx_vldx(input, pitch3);
LSX_TRANSPOSE4x4_H(in0, in1, in2, in3, in0, in1, in2, in3);
LSX_BUTTERFLY_4_H(in0, in1, in2, in3, temp0, temp1, in1, in3);
DUP4_ARG2(__lsx_vslli_h, temp0, 3, temp1, 3, in1, 3, in3, 3, temp0, temp1,
in1, in3);
in0 = __lsx_vadd_h(temp0, temp1);
in2 = __lsx_vsub_h(temp0, temp1);
SET_DOTP_VALUES(coeff, 0, 1, 2, const1, const2);
temp0 = __lsx_vreplvei_h(coeff, 3);
vec1_w = __lsx_vpackev_h(zero, temp0);
coeff = __lsx_vilvh_h(zero, coeff);
vec3_w = __lsx_vreplvei_w(coeff, 0);
tmp1 = __lsx_vilvl_h(in3, in1);
tmp0 = __lsx_vilvh_h(in3, in1);
vec0_w = vec1_w;
vec2_w = vec3_w;
DUP4_ARG3(__lsx_vdp2add_w_h, vec0_w, tmp1, const1, vec1_w, tmp0, const1,
vec2_w, tmp1, const2, vec3_w, tmp0, const2, vec0_w, vec1_w, vec2_w,
vec3_w);
DUP2_ARG3(__lsx_vsrani_h_w, vec1_w, vec0_w, 12, vec3_w, vec2_w, 12, in1, in3);
LSX_TRANSPOSE4x4_H(in0, in1, in2, in3, in0, in1, in2, in3);
LSX_BUTTERFLY_4_H(in0, in1, in2, in3, temp0, temp1, in1, in3);
in0 = __lsx_vadd_h(temp0, temp1);
in0 = __lsx_vaddi_hu(in0, 7);
in2 = __lsx_vsub_h(temp0, temp1);
in2 = __lsx_vaddi_hu(in2, 7);
in0 = __lsx_vsrai_h(in0, 4);
in2 = __lsx_vsrai_h(in2, 4);
DUP2_ARG2(__lsx_vreplvei_w, coeff, 2, coeff, 3, vec3_w, vec1_w);
vec3_w = __lsx_vadd_w(vec3_w, vec1_w);
vec1_w = __lsx_vreplvei_w(coeff, 1);
const0 = RET_1_IF_NZERO_H(in3);
tmp1 = __lsx_vilvl_h(in3, in1);
tmp0 = __lsx_vilvh_h(in3, in1);
vec0_w = vec1_w;
vec2_w = vec3_w;
DUP4_ARG3(__lsx_vdp2add_w_h, vec0_w, tmp1, const1, vec1_w, tmp0, const1,
vec2_w, tmp1, const2, vec3_w, tmp0, const2, vec0_w, vec1_w, vec2_w,
vec3_w);
DUP2_ARG3(__lsx_vsrani_h_w, vec1_w, vec0_w, 16, vec3_w, vec2_w, 16, in1, in3);
in1 = __lsx_vadd_h(in1, const0);
DUP2_ARG2(__lsx_vpickev_d, in1, in0, in3, in2, temp0, temp1);
__lsx_vst(temp0, output, 0);
__lsx_vst(temp1, output, 16);
DUP2_ARG2(__lsx_vpickod_d, in1, in0, in3, in2, in0, in2);
__lsx_vst(in0, output, 32);
__lsx_vst(in2, output, 48);
}
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