ref: f9eee0cfbe67bbe20cfa5b3c5627b1eec18eaed9
dir: /vp8/encoder/mips/msa/dct_msa.c/
/*
* 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 "./vp8_rtcd.h"
#include "vp8/common/mips/msa/vp8_macros_msa.h"
#define TRANSPOSE4x4_H(in0, in1, in2, in3, out0, out1, out2, out3) \
{ \
v8i16 s0_m, s1_m, tp0_m, tp1_m, tp2_m, tp3_m; \
\
ILVR_H2_SH(in2, in0, in3, in1, s0_m, s1_m); \
ILVRL_H2_SH(s1_m, s0_m, tp0_m, tp1_m); \
ILVL_H2_SH(in2, in0, in3, in1, s0_m, s1_m); \
ILVRL_H2_SH(s1_m, s0_m, tp2_m, tp3_m); \
PCKEV_D2_SH(tp2_m, tp0_m, tp3_m, tp1_m, out0, out2); \
PCKOD_D2_SH(tp2_m, tp0_m, tp3_m, tp1_m, out1, out3); \
}
#define SET_DOTP_VALUES(coeff, val0, val1, val2, const1, const2) \
{ \
v8i16 tmp0_m; \
\
SPLATI_H3_SH(coeff, val0, val1, val2, tmp0_m, const1, const2); \
ILVEV_H2_SH(tmp0_m, const1, const2, tmp0_m, const1, const2); \
}
#define RET_1_IF_NZERO_H(in0) \
({ \
v8i16 tmp0_m; \
v8i16 one_m = __msa_ldi_h(1); \
\
tmp0_m = __msa_ceqi_h(in0, 0); \
tmp0_m = tmp0_m ^ 255; \
tmp0_m = one_m & tmp0_m; \
\
tmp0_m; \
})
#define RET_1_IF_NZERO_W(in0) \
({ \
v4i32 tmp0_m; \
v4i32 one_m = __msa_ldi_w(1); \
\
tmp0_m = __msa_ceqi_w(in0, 0); \
tmp0_m = tmp0_m ^ 255; \
tmp0_m = one_m & tmp0_m; \
\
tmp0_m; \
})
#define RET_1_IF_NEG_W(in0) \
({ \
v4i32 tmp0_m; \
\
v4i32 one_m = __msa_ldi_w(1); \
tmp0_m = __msa_clti_s_w(in0, 0); \
tmp0_m = one_m & tmp0_m; \
\
tmp0_m; \
})
void vp8_short_fdct4x4_msa(int16_t *input, int16_t *output, int32_t pitch) {
v8i16 in0, in1, in2, in3;
v8i16 temp0, temp1;
v8i16 const0, const1;
v8i16 coeff = { 2217, 5352, -5352, 14500, 7500, 12000, 25000, 26000 };
v4i32 out0, out1, out2, out3;
v8i16 zero = { 0 };
LD_SH4(input, pitch / 2, in0, in1, in2, in3);
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
BUTTERFLY_4(in0, in1, in2, in3, temp0, temp1, in1, in3);
SLLI_4V(temp0, temp1, in1, in3, 3);
in0 = temp0 + temp1;
in2 = temp0 - temp1;
SET_DOTP_VALUES(coeff, 0, 1, 2, const0, const1);
temp0 = __msa_ilvr_h(in3, in1);
in1 = __msa_splati_h(coeff, 3);
out0 = (v4i32)__msa_ilvev_h(zero, in1);
coeff = __msa_ilvl_h(zero, coeff);
out1 = __msa_splati_w((v4i32)coeff, 0);
DPADD_SH2_SW(temp0, temp0, const0, const1, out0, out1);
out0 >>= 12;
out1 >>= 12;
PCKEV_H2_SH(out0, out0, out1, out1, in1, in3);
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
BUTTERFLY_4(in0, in1, in2, in3, temp0, temp1, in1, in3);
in0 = temp0 + temp1 + 7;
in2 = temp0 - temp1 + 7;
in0 >>= 4;
in2 >>= 4;
ILVR_H2_SW(zero, in0, zero, in2, out0, out2);
temp1 = RET_1_IF_NZERO_H(in3);
ILVR_H2_SH(zero, temp1, in3, in1, temp1, temp0);
SPLATI_W2_SW(coeff, 2, out3, out1);
out3 += out1;
out1 = __msa_splati_w((v4i32)coeff, 1);
DPADD_SH2_SW(temp0, temp0, const0, const1, out1, out3);
out1 >>= 16;
out3 >>= 16;
out1 += (v4i32)temp1;
PCKEV_H2_SH(out1, out0, out3, out2, in0, in2);
ST_SH2(in0, in2, output, 8);
}
void vp8_short_fdct8x4_msa(int16_t *input, int16_t *output, int32_t pitch) {
v8i16 in0, in1, in2, in3;
v8i16 temp0, temp1, tmp0, tmp1;
v8i16 const0, const1, const2;
v8i16 coeff = { 2217, 5352, -5352, 14500, 7500, 12000, 25000, 26000 };
v8i16 zero = { 0 };
v4i32 vec0_w, vec1_w, vec2_w, vec3_w;
LD_SH4(input, pitch / 2, in0, in1, in2, in3);
TRANSPOSE4x4_H(in0, in1, in2, in3, in0, in1, in2, in3);
BUTTERFLY_4(in0, in1, in2, in3, temp0, temp1, in1, in3);
SLLI_4V(temp0, temp1, in1, in3, 3);
in0 = temp0 + temp1;
in2 = temp0 - temp1;
SET_DOTP_VALUES(coeff, 0, 1, 2, const1, const2);
temp0 = __msa_splati_h(coeff, 3);
vec1_w = (v4i32)__msa_ilvev_h(zero, temp0);
coeff = __msa_ilvl_h(zero, coeff);
vec3_w = __msa_splati_w((v4i32)coeff, 0);
ILVRL_H2_SH(in3, in1, tmp1, tmp0);
vec0_w = vec1_w;
vec2_w = vec3_w;
DPADD_SH4_SW(tmp1, tmp0, tmp1, tmp0, const1, const1, const2, const2, vec0_w,
vec1_w, vec2_w, vec3_w);
SRA_4V(vec1_w, vec0_w, vec3_w, vec2_w, 12);
PCKEV_H2_SH(vec1_w, vec0_w, vec3_w, vec2_w, in1, in3);
TRANSPOSE4x4_H(in0, in1, in2, in3, in0, in1, in2, in3);
BUTTERFLY_4(in0, in1, in2, in3, temp0, temp1, in1, in3);
in0 = temp0 + temp1 + 7;
in2 = temp0 - temp1 + 7;
in0 >>= 4;
in2 >>= 4;
SPLATI_W2_SW(coeff, 2, vec3_w, vec1_w);
vec3_w += vec1_w;
vec1_w = __msa_splati_w((v4i32)coeff, 1);
const0 = RET_1_IF_NZERO_H(in3);
ILVRL_H2_SH(in3, in1, tmp1, tmp0);
vec0_w = vec1_w;
vec2_w = vec3_w;
DPADD_SH4_SW(tmp1, tmp0, tmp1, tmp0, const1, const1, const2, const2, vec0_w,
vec1_w, vec2_w, vec3_w);
SRA_4V(vec1_w, vec0_w, vec3_w, vec2_w, 16);
PCKEV_H2_SH(vec1_w, vec0_w, vec3_w, vec2_w, in1, in3);
in1 += const0;
PCKEV_D2_SH(in1, in0, in3, in2, temp0, temp1);
ST_SH2(temp0, temp1, output, 8);
PCKOD_D2_SH(in1, in0, in3, in2, in0, in2);
ST_SH2(in0, in2, output + 16, 8);
}
void vp8_short_walsh4x4_msa(int16_t *input, int16_t *output, int32_t pitch) {
v8i16 in0_h, in1_h, in2_h, in3_h;
v4i32 in0_w, in1_w, in2_w, in3_w, temp0, temp1, temp2, temp3;
LD_SH4(input, pitch / 2, in0_h, in1_h, in2_h, in3_h);
TRANSPOSE4x4_SH_SH(in0_h, in1_h, in2_h, in3_h, in0_h, in1_h, in2_h, in3_h);
UNPCK_R_SH_SW(in0_h, in0_w);
UNPCK_R_SH_SW(in1_h, in1_w);
UNPCK_R_SH_SW(in2_h, in2_w);
UNPCK_R_SH_SW(in3_h, in3_w);
BUTTERFLY_4(in0_w, in1_w, in3_w, in2_w, temp0, temp3, temp2, temp1);
SLLI_4V(temp0, temp1, temp2, temp3, 2);
BUTTERFLY_4(temp0, temp1, temp2, temp3, in0_w, in1_w, in2_w, in3_w);
temp0 = RET_1_IF_NZERO_W(temp0);
in0_w += temp0;
TRANSPOSE4x4_SW_SW(in0_w, in1_w, in2_w, in3_w, in0_w, in1_w, in2_w, in3_w);
BUTTERFLY_4(in0_w, in1_w, in3_w, in2_w, temp0, temp3, temp2, temp1);
BUTTERFLY_4(temp0, temp1, temp2, temp3, in0_w, in1_w, in2_w, in3_w);
in0_w += RET_1_IF_NEG_W(in0_w);
in1_w += RET_1_IF_NEG_W(in1_w);
in2_w += RET_1_IF_NEG_W(in2_w);
in3_w += RET_1_IF_NEG_W(in3_w);
ADD4(in0_w, 3, in1_w, 3, in2_w, 3, in3_w, 3, in0_w, in1_w, in2_w, in3_w);
SRA_4V(in0_w, in1_w, in2_w, in3_w, 3);
PCKEV_H2_SH(in1_w, in0_w, in3_w, in2_w, in0_h, in1_h);
ST_SH2(in0_h, in1_h, output, 8);
}