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      1 // Copyright 2016 Google Inc. All Rights Reserved.
      2 //
      3 // Use of this source code is governed by a BSD-style license
      4 // that can be found in the COPYING file in the root of the source
      5 // tree. An additional intellectual property rights grant can be found
      6 // in the file PATENTS. All contributing project authors may
      7 // be found in the AUTHORS file in the root of the source tree.
      8 // -----------------------------------------------------------------------------
      9 //
     10 // MSA version of encoder dsp functions.
     11 //
     12 // Author:  Prashant Patil   (prashant.patil (at) imgtec.com)
     13 
     14 #include "src/dsp/dsp.h"
     15 
     16 #if defined(WEBP_USE_MSA)
     17 
     18 #include <stdlib.h>
     19 #include "src/dsp/msa_macro.h"
     20 #include "src/enc/vp8i_enc.h"
     21 
     22 //------------------------------------------------------------------------------
     23 // Transforms
     24 
     25 #define IDCT_1D_W(in0, in1, in2, in3, out0, out1, out2, out3) do {  \
     26   v4i32 a1_m, b1_m, c1_m, d1_m;                                     \
     27   const v4i32 cospi8sqrt2minus1 = __msa_fill_w(20091);              \
     28   const v4i32 sinpi8sqrt2 = __msa_fill_w(35468);                    \
     29   v4i32 c_tmp1_m = in1 * sinpi8sqrt2;                               \
     30   v4i32 c_tmp2_m = in3 * cospi8sqrt2minus1;                         \
     31   v4i32 d_tmp1_m = in1 * cospi8sqrt2minus1;                         \
     32   v4i32 d_tmp2_m = in3 * sinpi8sqrt2;                               \
     33                                                                     \
     34   ADDSUB2(in0, in2, a1_m, b1_m);                                    \
     35   SRAI_W2_SW(c_tmp1_m, c_tmp2_m, 16);                               \
     36   c_tmp2_m = c_tmp2_m + in3;                                        \
     37   c1_m = c_tmp1_m - c_tmp2_m;                                       \
     38   SRAI_W2_SW(d_tmp1_m, d_tmp2_m, 16);                               \
     39   d_tmp1_m = d_tmp1_m + in1;                                        \
     40   d1_m = d_tmp1_m + d_tmp2_m;                                       \
     41   BUTTERFLY_4(a1_m, b1_m, c1_m, d1_m, out0, out1, out2, out3);      \
     42 } while (0)
     43 
     44 static WEBP_INLINE void ITransformOne(const uint8_t* ref, const int16_t* in,
     45                                       uint8_t* dst) {
     46   v8i16 input0, input1;
     47   v4i32 in0, in1, in2, in3, hz0, hz1, hz2, hz3, vt0, vt1, vt2, vt3;
     48   v4i32 res0, res1, res2, res3;
     49   v16i8 dest0, dest1, dest2, dest3;
     50   const v16i8 zero = { 0 };
     51 
     52   LD_SH2(in, 8, input0, input1);
     53   UNPCK_SH_SW(input0, in0, in1);
     54   UNPCK_SH_SW(input1, in2, in3);
     55   IDCT_1D_W(in0, in1, in2, in3, hz0, hz1, hz2, hz3);
     56   TRANSPOSE4x4_SW_SW(hz0, hz1, hz2, hz3, hz0, hz1, hz2, hz3);
     57   IDCT_1D_W(hz0, hz1, hz2, hz3, vt0, vt1, vt2, vt3);
     58   SRARI_W4_SW(vt0, vt1, vt2, vt3, 3);
     59   TRANSPOSE4x4_SW_SW(vt0, vt1, vt2, vt3, vt0, vt1, vt2, vt3);
     60   LD_SB4(ref, BPS, dest0, dest1, dest2, dest3);
     61   ILVR_B4_SW(zero, dest0, zero, dest1, zero, dest2, zero, dest3,
     62              res0, res1, res2, res3);
     63   ILVR_H4_SW(zero, res0, zero, res1, zero, res2, zero, res3,
     64              res0, res1, res2, res3);
     65   ADD4(res0, vt0, res1, vt1, res2, vt2, res3, vt3, res0, res1, res2, res3);
     66   CLIP_SW4_0_255(res0, res1, res2, res3);
     67   PCKEV_B2_SW(res0, res1, res2, res3, vt0, vt1);
     68   res0 = (v4i32)__msa_pckev_b((v16i8)vt0, (v16i8)vt1);
     69   ST4x4_UB(res0, res0, 3, 2, 1, 0, dst, BPS);
     70 }
     71 
     72 static void ITransform_MSA(const uint8_t* ref, const int16_t* in, uint8_t* dst,
     73                            int do_two) {
     74   ITransformOne(ref, in, dst);
     75   if (do_two) {
     76     ITransformOne(ref + 4, in + 16, dst + 4);
     77   }
     78 }
     79 
     80 static void FTransform_MSA(const uint8_t* src, const uint8_t* ref,
     81                            int16_t* out) {
     82   uint64_t out0, out1, out2, out3;
     83   uint32_t in0, in1, in2, in3;
     84   v4i32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5;
     85   v8i16 t0, t1, t2, t3;
     86   v16u8 srcl0, srcl1, src0 = { 0 }, src1 = { 0 };
     87   const v8i16 mask0 = { 0, 4, 8, 12, 1, 5, 9, 13 };
     88   const v8i16 mask1 = { 3, 7, 11, 15, 2, 6, 10, 14 };
     89   const v8i16 mask2 = { 4, 0, 5, 1, 6, 2, 7, 3 };
     90   const v8i16 mask3 = { 0, 4, 1, 5, 2, 6, 3, 7 };
     91   const v8i16 cnst0 = { 2217, -5352, 2217, -5352, 2217, -5352, 2217, -5352 };
     92   const v8i16 cnst1 = { 5352, 2217, 5352, 2217, 5352, 2217, 5352, 2217 };
     93 
     94   LW4(src, BPS, in0, in1, in2, in3);
     95   INSERT_W4_UB(in0, in1, in2, in3, src0);
     96   LW4(ref, BPS, in0, in1, in2, in3);
     97   INSERT_W4_UB(in0, in1, in2, in3, src1);
     98   ILVRL_B2_UB(src0, src1, srcl0, srcl1);
     99   HSUB_UB2_SH(srcl0, srcl1, t0, t1);
    100   VSHF_H2_SH(t0, t1, t0, t1, mask0, mask1, t2, t3);
    101   ADDSUB2(t2, t3, t0, t1);
    102   t0 = SRLI_H(t0, 3);
    103   VSHF_H2_SH(t0, t0, t1, t1, mask2, mask3, t3, t2);
    104   tmp0 = __msa_hadd_s_w(t3, t3);
    105   tmp2 = __msa_hsub_s_w(t3, t3);
    106   FILL_W2_SW(1812, 937, tmp1, tmp3);
    107   DPADD_SH2_SW(t2, t2, cnst0, cnst1, tmp3, tmp1);
    108   SRAI_W2_SW(tmp1, tmp3, 9);
    109   PCKEV_H2_SH(tmp1, tmp0, tmp3, tmp2, t0, t1);
    110   VSHF_H2_SH(t0, t1, t0, t1, mask0, mask1, t2, t3);
    111   ADDSUB2(t2, t3, t0, t1);
    112   VSHF_H2_SH(t0, t0, t1, t1, mask2, mask3, t3, t2);
    113   tmp0 = __msa_hadd_s_w(t3, t3);
    114   tmp2 = __msa_hsub_s_w(t3, t3);
    115   ADDVI_W2_SW(tmp0, 7, tmp2, 7, tmp0, tmp2);
    116   SRAI_W2_SW(tmp0, tmp2, 4);
    117   FILL_W2_SW(12000, 51000, tmp1, tmp3);
    118   DPADD_SH2_SW(t2, t2, cnst0, cnst1, tmp3, tmp1);
    119   SRAI_W2_SW(tmp1, tmp3, 16);
    120   UNPCK_R_SH_SW(t1, tmp4);
    121   tmp5 = __msa_ceqi_w(tmp4, 0);
    122   tmp4 = (v4i32)__msa_nor_v((v16u8)tmp5, (v16u8)tmp5);
    123   tmp5 = __msa_fill_w(1);
    124   tmp5 = (v4i32)__msa_and_v((v16u8)tmp5, (v16u8)tmp4);
    125   tmp1 += tmp5;
    126   PCKEV_H2_SH(tmp1, tmp0, tmp3, tmp2, t0, t1);
    127   out0 = __msa_copy_s_d((v2i64)t0, 0);
    128   out1 = __msa_copy_s_d((v2i64)t0, 1);
    129   out2 = __msa_copy_s_d((v2i64)t1, 0);
    130   out3 = __msa_copy_s_d((v2i64)t1, 1);
    131   SD4(out0, out1, out2, out3, out, 8);
    132 }
    133 
    134 static void FTransformWHT_MSA(const int16_t* in, int16_t* out) {
    135   v8i16 in0 = { 0 };
    136   v8i16 in1 = { 0 };
    137   v8i16 tmp0, tmp1, tmp2, tmp3;
    138   v8i16 out0, out1;
    139   const v8i16 mask0 = { 0, 1, 2, 3, 8, 9, 10, 11 };
    140   const v8i16 mask1 = { 4, 5, 6, 7, 12, 13, 14, 15 };
    141   const v8i16 mask2 = { 0, 4, 8, 12, 1, 5, 9, 13 };
    142   const v8i16 mask3 = { 3, 7, 11, 15, 2, 6, 10, 14 };
    143 
    144   in0 = __msa_insert_h(in0, 0, in[  0]);
    145   in0 = __msa_insert_h(in0, 1, in[ 64]);
    146   in0 = __msa_insert_h(in0, 2, in[128]);
    147   in0 = __msa_insert_h(in0, 3, in[192]);
    148   in0 = __msa_insert_h(in0, 4, in[ 16]);
    149   in0 = __msa_insert_h(in0, 5, in[ 80]);
    150   in0 = __msa_insert_h(in0, 6, in[144]);
    151   in0 = __msa_insert_h(in0, 7, in[208]);
    152   in1 = __msa_insert_h(in1, 0, in[ 48]);
    153   in1 = __msa_insert_h(in1, 1, in[112]);
    154   in1 = __msa_insert_h(in1, 2, in[176]);
    155   in1 = __msa_insert_h(in1, 3, in[240]);
    156   in1 = __msa_insert_h(in1, 4, in[ 32]);
    157   in1 = __msa_insert_h(in1, 5, in[ 96]);
    158   in1 = __msa_insert_h(in1, 6, in[160]);
    159   in1 = __msa_insert_h(in1, 7, in[224]);
    160   ADDSUB2(in0, in1, tmp0, tmp1);
    161   VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3);
    162   ADDSUB2(tmp2, tmp3, tmp0, tmp1);
    163   VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask2, mask3, in0, in1);
    164   ADDSUB2(in0, in1, tmp0, tmp1);
    165   VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3);
    166   ADDSUB2(tmp2, tmp3, out0, out1);
    167   SRAI_H2_SH(out0, out1, 1);
    168   ST_SH2(out0, out1, out, 8);
    169 }
    170 
    171 static int TTransform_MSA(const uint8_t* in, const uint16_t* w) {
    172   int sum;
    173   uint32_t in0_m, in1_m, in2_m, in3_m;
    174   v16i8 src0 = { 0 };
    175   v8i16 in0, in1, tmp0, tmp1, tmp2, tmp3;
    176   v4i32 dst0, dst1;
    177   const v16i8 zero = { 0 };
    178   const v8i16 mask0 = { 0, 1, 2, 3, 8, 9, 10, 11 };
    179   const v8i16 mask1 = { 4, 5, 6, 7, 12, 13, 14, 15 };
    180   const v8i16 mask2 = { 0, 4, 8, 12, 1, 5, 9, 13 };
    181   const v8i16 mask3 = { 3, 7, 11, 15, 2, 6, 10, 14 };
    182 
    183   LW4(in, BPS, in0_m, in1_m, in2_m, in3_m);
    184   INSERT_W4_SB(in0_m, in1_m, in2_m, in3_m, src0);
    185   ILVRL_B2_SH(zero, src0, tmp0, tmp1);
    186   VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask2, mask3, in0, in1);
    187   ADDSUB2(in0, in1, tmp0, tmp1);
    188   VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3);
    189   ADDSUB2(tmp2, tmp3, tmp0, tmp1);
    190   VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask2, mask3, in0, in1);
    191   ADDSUB2(in0, in1, tmp0, tmp1);
    192   VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3);
    193   ADDSUB2(tmp2, tmp3, tmp0, tmp1);
    194   tmp0 = __msa_add_a_h(tmp0, (v8i16)zero);
    195   tmp1 = __msa_add_a_h(tmp1, (v8i16)zero);
    196   LD_SH2(w, 8, tmp2, tmp3);
    197   DOTP_SH2_SW(tmp0, tmp1, tmp2, tmp3, dst0, dst1);
    198   dst0 = dst0 + dst1;
    199   sum = HADD_SW_S32(dst0);
    200   return sum;
    201 }
    202 
    203 static int Disto4x4_MSA(const uint8_t* const a, const uint8_t* const b,
    204                         const uint16_t* const w) {
    205   const int sum1 = TTransform_MSA(a, w);
    206   const int sum2 = TTransform_MSA(b, w);
    207   return abs(sum2 - sum1) >> 5;
    208 }
    209 
    210 static int Disto16x16_MSA(const uint8_t* const a, const uint8_t* const b,
    211                           const uint16_t* const w) {
    212   int D = 0;
    213   int x, y;
    214   for (y = 0; y < 16 * BPS; y += 4 * BPS) {
    215     for (x = 0; x < 16; x += 4) {
    216       D += Disto4x4_MSA(a + x + y, b + x + y, w);
    217     }
    218   }
    219   return D;
    220 }
    221 
    222 //------------------------------------------------------------------------------
    223 // Histogram
    224 
    225 static void CollectHistogram_MSA(const uint8_t* ref, const uint8_t* pred,
    226                                  int start_block, int end_block,
    227                                  VP8Histogram* const histo) {
    228   int j;
    229   int distribution[MAX_COEFF_THRESH + 1] = { 0 };
    230   for (j = start_block; j < end_block; ++j) {
    231     int16_t out[16];
    232     VP8FTransform(ref + VP8DspScan[j], pred + VP8DspScan[j], out);
    233     {
    234       int k;
    235       v8i16 coeff0, coeff1;
    236       const v8i16 zero = { 0 };
    237       const v8i16 max_coeff_thr = __msa_ldi_h(MAX_COEFF_THRESH);
    238       LD_SH2(&out[0], 8, coeff0, coeff1);
    239       coeff0 = __msa_add_a_h(coeff0, zero);
    240       coeff1 = __msa_add_a_h(coeff1, zero);
    241       SRAI_H2_SH(coeff0, coeff1, 3);
    242       coeff0 = __msa_min_s_h(coeff0, max_coeff_thr);
    243       coeff1 = __msa_min_s_h(coeff1, max_coeff_thr);
    244       ST_SH2(coeff0, coeff1, &out[0], 8);
    245       for (k = 0; k < 16; ++k) {
    246         ++distribution[out[k]];
    247       }
    248     }
    249   }
    250   VP8SetHistogramData(distribution, histo);
    251 }
    252 
    253 //------------------------------------------------------------------------------
    254 // Intra predictions
    255 
    256 // luma 4x4 prediction
    257 
    258 #define DST(x, y) dst[(x) + (y) * BPS]
    259 #define AVG3(a, b, c) (((a) + 2 * (b) + (c) + 2) >> 2)
    260 #define AVG2(a, b) (((a) + (b) + 1) >> 1)
    261 
    262 static WEBP_INLINE void VE4(uint8_t* dst, const uint8_t* top) {    // vertical
    263   const v16u8 A1 = { 0 };
    264   const uint64_t val_m = LD(top - 1);
    265   const v16u8 A = (v16u8)__msa_insert_d((v2i64)A1, 0, val_m);
    266   const v16u8 B = SLDI_UB(A, A, 1);
    267   const v16u8 C = SLDI_UB(A, A, 2);
    268   const v16u8 AC = __msa_ave_u_b(A, C);
    269   const v16u8 B2 = __msa_ave_u_b(B, B);
    270   const v16u8 R = __msa_aver_u_b(AC, B2);
    271   const uint32_t out = __msa_copy_s_w((v4i32)R, 0);
    272   SW4(out, out, out, out, dst, BPS);
    273 }
    274 
    275 static WEBP_INLINE void HE4(uint8_t* dst, const uint8_t* top) {    // horizontal
    276   const int X = top[-1];
    277   const int I = top[-2];
    278   const int J = top[-3];
    279   const int K = top[-4];
    280   const int L = top[-5];
    281   WebPUint32ToMem(dst + 0 * BPS, 0x01010101U * AVG3(X, I, J));
    282   WebPUint32ToMem(dst + 1 * BPS, 0x01010101U * AVG3(I, J, K));
    283   WebPUint32ToMem(dst + 2 * BPS, 0x01010101U * AVG3(J, K, L));
    284   WebPUint32ToMem(dst + 3 * BPS, 0x01010101U * AVG3(K, L, L));
    285 }
    286 
    287 static WEBP_INLINE void DC4(uint8_t* dst, const uint8_t* top) {
    288   uint32_t dc = 4;
    289   int i;
    290   for (i = 0; i < 4; ++i) dc += top[i] + top[-5 + i];
    291   dc >>= 3;
    292   dc = dc | (dc << 8) | (dc << 16) | (dc << 24);
    293   SW4(dc, dc, dc, dc, dst, BPS);
    294 }
    295 
    296 static WEBP_INLINE void RD4(uint8_t* dst, const uint8_t* top) {
    297   const v16u8 A2 = { 0 };
    298   const uint64_t val_m = LD(top - 5);
    299   const v16u8 A1 = (v16u8)__msa_insert_d((v2i64)A2, 0, val_m);
    300   const v16u8 A = (v16u8)__msa_insert_b((v16i8)A1, 8, top[3]);
    301   const v16u8 B = SLDI_UB(A, A, 1);
    302   const v16u8 C = SLDI_UB(A, A, 2);
    303   const v16u8 AC = __msa_ave_u_b(A, C);
    304   const v16u8 B2 = __msa_ave_u_b(B, B);
    305   const v16u8 R0 = __msa_aver_u_b(AC, B2);
    306   const v16u8 R1 = SLDI_UB(R0, R0, 1);
    307   const v16u8 R2 = SLDI_UB(R1, R1, 1);
    308   const v16u8 R3 = SLDI_UB(R2, R2, 1);
    309   const uint32_t val0 = __msa_copy_s_w((v4i32)R0, 0);
    310   const uint32_t val1 = __msa_copy_s_w((v4i32)R1, 0);
    311   const uint32_t val2 = __msa_copy_s_w((v4i32)R2, 0);
    312   const uint32_t val3 = __msa_copy_s_w((v4i32)R3, 0);
    313   SW4(val3, val2, val1, val0, dst, BPS);
    314 }
    315 
    316 static WEBP_INLINE void LD4(uint8_t* dst, const uint8_t* top) {
    317   const v16u8 A1 = { 0 };
    318   const uint64_t val_m = LD(top);
    319   const v16u8 A = (v16u8)__msa_insert_d((v2i64)A1, 0, val_m);
    320   const v16u8 B = SLDI_UB(A, A, 1);
    321   const v16u8 C1 = SLDI_UB(A, A, 2);
    322   const v16u8 C = (v16u8)__msa_insert_b((v16i8)C1, 6, top[7]);
    323   const v16u8 AC = __msa_ave_u_b(A, C);
    324   const v16u8 B2 = __msa_ave_u_b(B, B);
    325   const v16u8 R0 = __msa_aver_u_b(AC, B2);
    326   const v16u8 R1 = SLDI_UB(R0, R0, 1);
    327   const v16u8 R2 = SLDI_UB(R1, R1, 1);
    328   const v16u8 R3 = SLDI_UB(R2, R2, 1);
    329   const uint32_t val0 = __msa_copy_s_w((v4i32)R0, 0);
    330   const uint32_t val1 = __msa_copy_s_w((v4i32)R1, 0);
    331   const uint32_t val2 = __msa_copy_s_w((v4i32)R2, 0);
    332   const uint32_t val3 = __msa_copy_s_w((v4i32)R3, 0);
    333   SW4(val0, val1, val2, val3, dst, BPS);
    334 }
    335 
    336 static WEBP_INLINE void VR4(uint8_t* dst, const uint8_t* top) {
    337   const int X = top[-1];
    338   const int I = top[-2];
    339   const int J = top[-3];
    340   const int K = top[-4];
    341   const int A = top[0];
    342   const int B = top[1];
    343   const int C = top[2];
    344   const int D = top[3];
    345   DST(0, 0) = DST(1, 2) = AVG2(X, A);
    346   DST(1, 0) = DST(2, 2) = AVG2(A, B);
    347   DST(2, 0) = DST(3, 2) = AVG2(B, C);
    348   DST(3, 0)             = AVG2(C, D);
    349   DST(0, 3) =             AVG3(K, J, I);
    350   DST(0, 2) =             AVG3(J, I, X);
    351   DST(0, 1) = DST(1, 3) = AVG3(I, X, A);
    352   DST(1, 1) = DST(2, 3) = AVG3(X, A, B);
    353   DST(2, 1) = DST(3, 3) = AVG3(A, B, C);
    354   DST(3, 1) =             AVG3(B, C, D);
    355 }
    356 
    357 static WEBP_INLINE void VL4(uint8_t* dst, const uint8_t* top) {
    358   const int A = top[0];
    359   const int B = top[1];
    360   const int C = top[2];
    361   const int D = top[3];
    362   const int E = top[4];
    363   const int F = top[5];
    364   const int G = top[6];
    365   const int H = top[7];
    366   DST(0, 0) =             AVG2(A, B);
    367   DST(1, 0) = DST(0, 2) = AVG2(B, C);
    368   DST(2, 0) = DST(1, 2) = AVG2(C, D);
    369   DST(3, 0) = DST(2, 2) = AVG2(D, E);
    370   DST(0, 1) =             AVG3(A, B, C);
    371   DST(1, 1) = DST(0, 3) = AVG3(B, C, D);
    372   DST(2, 1) = DST(1, 3) = AVG3(C, D, E);
    373   DST(3, 1) = DST(2, 3) = AVG3(D, E, F);
    374               DST(3, 2) = AVG3(E, F, G);
    375               DST(3, 3) = AVG3(F, G, H);
    376 }
    377 
    378 static WEBP_INLINE void HU4(uint8_t* dst, const uint8_t* top) {
    379   const int I = top[-2];
    380   const int J = top[-3];
    381   const int K = top[-4];
    382   const int L = top[-5];
    383   DST(0, 0) =             AVG2(I, J);
    384   DST(2, 0) = DST(0, 1) = AVG2(J, K);
    385   DST(2, 1) = DST(0, 2) = AVG2(K, L);
    386   DST(1, 0) =             AVG3(I, J, K);
    387   DST(3, 0) = DST(1, 1) = AVG3(J, K, L);
    388   DST(3, 1) = DST(1, 2) = AVG3(K, L, L);
    389   DST(3, 2) = DST(2, 2) =
    390   DST(0, 3) = DST(1, 3) = DST(2, 3) = DST(3, 3) = L;
    391 }
    392 
    393 static WEBP_INLINE void HD4(uint8_t* dst, const uint8_t* top) {
    394   const int X = top[-1];
    395   const int I = top[-2];
    396   const int J = top[-3];
    397   const int K = top[-4];
    398   const int L = top[-5];
    399   const int A = top[0];
    400   const int B = top[1];
    401   const int C = top[2];
    402   DST(0, 0) = DST(2, 1) = AVG2(I, X);
    403   DST(0, 1) = DST(2, 2) = AVG2(J, I);
    404   DST(0, 2) = DST(2, 3) = AVG2(K, J);
    405   DST(0, 3)             = AVG2(L, K);
    406   DST(3, 0)             = AVG3(A, B, C);
    407   DST(2, 0)             = AVG3(X, A, B);
    408   DST(1, 0) = DST(3, 1) = AVG3(I, X, A);
    409   DST(1, 1) = DST(3, 2) = AVG3(J, I, X);
    410   DST(1, 2) = DST(3, 3) = AVG3(K, J, I);
    411   DST(1, 3)             = AVG3(L, K, J);
    412 }
    413 
    414 static WEBP_INLINE void TM4(uint8_t* dst, const uint8_t* top) {
    415   const v16i8 zero = { 0 };
    416   const v8i16 TL = (v8i16)__msa_fill_h(top[-1]);
    417   const v8i16 L0 = (v8i16)__msa_fill_h(top[-2]);
    418   const v8i16 L1 = (v8i16)__msa_fill_h(top[-3]);
    419   const v8i16 L2 = (v8i16)__msa_fill_h(top[-4]);
    420   const v8i16 L3 = (v8i16)__msa_fill_h(top[-5]);
    421   const v16u8 T1 = LD_UB(top);
    422   const v8i16 T  = (v8i16)__msa_ilvr_b(zero, (v16i8)T1);
    423   const v8i16 d = T - TL;
    424   v8i16 r0, r1, r2, r3;
    425   ADD4(d, L0, d, L1, d, L2, d, L3, r0, r1, r2, r3);
    426   CLIP_SH4_0_255(r0, r1, r2, r3);
    427   PCKEV_ST4x4_UB(r0, r1, r2, r3, dst, BPS);
    428 }
    429 
    430 #undef DST
    431 #undef AVG3
    432 #undef AVG2
    433 
    434 static void Intra4Preds_MSA(uint8_t* dst, const uint8_t* top) {
    435   DC4(I4DC4 + dst, top);
    436   TM4(I4TM4 + dst, top);
    437   VE4(I4VE4 + dst, top);
    438   HE4(I4HE4 + dst, top);
    439   RD4(I4RD4 + dst, top);
    440   VR4(I4VR4 + dst, top);
    441   LD4(I4LD4 + dst, top);
    442   VL4(I4VL4 + dst, top);
    443   HD4(I4HD4 + dst, top);
    444   HU4(I4HU4 + dst, top);
    445 }
    446 
    447 // luma 16x16 prediction
    448 
    449 #define STORE16x16(out, dst) do {                                        \
    450     ST_UB8(out, out, out, out, out, out, out, out, dst + 0 * BPS, BPS);  \
    451     ST_UB8(out, out, out, out, out, out, out, out, dst + 8 * BPS, BPS);  \
    452 } while (0)
    453 
    454 static WEBP_INLINE void VerticalPred16x16(uint8_t* dst, const uint8_t* top) {
    455   if (top != NULL) {
    456     const v16u8 out = LD_UB(top);
    457     STORE16x16(out, dst);
    458   } else {
    459     const v16u8 out = (v16u8)__msa_fill_b(0x7f);
    460     STORE16x16(out, dst);
    461   }
    462 }
    463 
    464 static WEBP_INLINE void HorizontalPred16x16(uint8_t* dst,
    465                                             const uint8_t* left) {
    466   if (left != NULL) {
    467     int j;
    468     for (j = 0; j < 16; j += 4) {
    469       const v16u8 L0 = (v16u8)__msa_fill_b(left[0]);
    470       const v16u8 L1 = (v16u8)__msa_fill_b(left[1]);
    471       const v16u8 L2 = (v16u8)__msa_fill_b(left[2]);
    472       const v16u8 L3 = (v16u8)__msa_fill_b(left[3]);
    473       ST_UB4(L0, L1, L2, L3, dst, BPS);
    474       dst += 4 * BPS;
    475       left += 4;
    476     }
    477   } else {
    478     const v16u8 out = (v16u8)__msa_fill_b(0x81);
    479     STORE16x16(out, dst);
    480   }
    481 }
    482 
    483 static WEBP_INLINE void TrueMotion16x16(uint8_t* dst, const uint8_t* left,
    484                                         const uint8_t* top) {
    485   if (left != NULL) {
    486     if (top != NULL) {
    487       int j;
    488       v8i16 d1, d2;
    489       const v16i8 zero = { 0 };
    490       const v8i16 TL = (v8i16)__msa_fill_h(left[-1]);
    491       const v16u8 T = LD_UB(top);
    492       ILVRL_B2_SH(zero, T, d1, d2);
    493       SUB2(d1, TL, d2, TL, d1, d2);
    494       for (j = 0; j < 16; j += 4) {
    495         v16i8 t0, t1, t2, t3;
    496         v8i16 r0, r1, r2, r3, r4, r5, r6, r7;
    497         const v8i16 L0 = (v8i16)__msa_fill_h(left[j + 0]);
    498         const v8i16 L1 = (v8i16)__msa_fill_h(left[j + 1]);
    499         const v8i16 L2 = (v8i16)__msa_fill_h(left[j + 2]);
    500         const v8i16 L3 = (v8i16)__msa_fill_h(left[j + 3]);
    501         ADD4(d1, L0, d1, L1, d1, L2, d1, L3, r0, r1, r2, r3);
    502         ADD4(d2, L0, d2, L1, d2, L2, d2, L3, r4, r5, r6, r7);
    503         CLIP_SH4_0_255(r0, r1, r2, r3);
    504         CLIP_SH4_0_255(r4, r5, r6, r7);
    505         PCKEV_B4_SB(r4, r0, r5, r1, r6, r2, r7, r3, t0, t1, t2, t3);
    506         ST_SB4(t0, t1, t2, t3, dst, BPS);
    507         dst += 4 * BPS;
    508       }
    509     } else {
    510       HorizontalPred16x16(dst, left);
    511     }
    512   } else {
    513     if (top != NULL) {
    514       VerticalPred16x16(dst, top);
    515     } else {
    516       const v16u8 out = (v16u8)__msa_fill_b(0x81);
    517       STORE16x16(out, dst);
    518     }
    519   }
    520 }
    521 
    522 static WEBP_INLINE void DCMode16x16(uint8_t* dst, const uint8_t* left,
    523                                     const uint8_t* top) {
    524   int DC;
    525   v16u8 out;
    526   if (top != NULL && left != NULL) {
    527     const v16u8 rtop = LD_UB(top);
    528     const v8u16 dctop = __msa_hadd_u_h(rtop, rtop);
    529     const v16u8 rleft = LD_UB(left);
    530     const v8u16 dcleft = __msa_hadd_u_h(rleft, rleft);
    531     const v8u16 dctemp = dctop + dcleft;
    532     DC = HADD_UH_U32(dctemp);
    533     DC = (DC + 16) >> 5;
    534   } else if (left != NULL) {   // left but no top
    535     const v16u8 rleft = LD_UB(left);
    536     const v8u16 dcleft = __msa_hadd_u_h(rleft, rleft);
    537     DC = HADD_UH_U32(dcleft);
    538     DC = (DC + DC + 16) >> 5;
    539   } else if (top != NULL) {   // top but no left
    540     const v16u8 rtop = LD_UB(top);
    541     const v8u16 dctop = __msa_hadd_u_h(rtop, rtop);
    542     DC = HADD_UH_U32(dctop);
    543     DC = (DC + DC + 16) >> 5;
    544   } else {   // no top, no left, nothing.
    545     DC = 0x80;
    546   }
    547   out = (v16u8)__msa_fill_b(DC);
    548   STORE16x16(out, dst);
    549 }
    550 
    551 static void Intra16Preds_MSA(uint8_t* dst,
    552                              const uint8_t* left, const uint8_t* top) {
    553   DCMode16x16(I16DC16 + dst, left, top);
    554   VerticalPred16x16(I16VE16 + dst, top);
    555   HorizontalPred16x16(I16HE16 + dst, left);
    556   TrueMotion16x16(I16TM16 + dst, left, top);
    557 }
    558 
    559 // Chroma 8x8 prediction
    560 
    561 #define CALC_DC8(in, out) do {                              \
    562   const v8u16 temp0 = __msa_hadd_u_h(in, in);               \
    563   const v4u32 temp1 = __msa_hadd_u_w(temp0, temp0);         \
    564   const v2i64 temp2 = (v2i64)__msa_hadd_u_d(temp1, temp1);  \
    565   const v2i64 temp3 = __msa_splati_d(temp2, 1);             \
    566   const v2i64 temp4 = temp3 + temp2;                        \
    567   const v16i8 temp5 = (v16i8)__msa_srari_d(temp4, 4);       \
    568   const v2i64 temp6 = (v2i64)__msa_splati_b(temp5, 0);      \
    569   out = __msa_copy_s_d(temp6, 0);                           \
    570 } while (0)
    571 
    572 #define STORE8x8(out, dst) do {                 \
    573   SD4(out, out, out, out, dst + 0 * BPS, BPS);  \
    574   SD4(out, out, out, out, dst + 4 * BPS, BPS);  \
    575 } while (0)
    576 
    577 static WEBP_INLINE void VerticalPred8x8(uint8_t* dst, const uint8_t* top) {
    578   if (top != NULL) {
    579     const uint64_t out = LD(top);
    580     STORE8x8(out, dst);
    581   } else {
    582     const uint64_t out = 0x7f7f7f7f7f7f7f7fULL;
    583     STORE8x8(out, dst);
    584   }
    585 }
    586 
    587 static WEBP_INLINE void HorizontalPred8x8(uint8_t* dst, const uint8_t* left) {
    588   if (left != NULL) {
    589     int j;
    590     for (j = 0; j < 8; j += 4) {
    591       const v16u8 L0 = (v16u8)__msa_fill_b(left[0]);
    592       const v16u8 L1 = (v16u8)__msa_fill_b(left[1]);
    593       const v16u8 L2 = (v16u8)__msa_fill_b(left[2]);
    594       const v16u8 L3 = (v16u8)__msa_fill_b(left[3]);
    595       const uint64_t out0 = __msa_copy_s_d((v2i64)L0, 0);
    596       const uint64_t out1 = __msa_copy_s_d((v2i64)L1, 0);
    597       const uint64_t out2 = __msa_copy_s_d((v2i64)L2, 0);
    598       const uint64_t out3 = __msa_copy_s_d((v2i64)L3, 0);
    599       SD4(out0, out1, out2, out3, dst, BPS);
    600       dst += 4 * BPS;
    601       left += 4;
    602     }
    603   } else {
    604     const uint64_t out = 0x8181818181818181ULL;
    605     STORE8x8(out, dst);
    606   }
    607 }
    608 
    609 static WEBP_INLINE void TrueMotion8x8(uint8_t* dst, const uint8_t* left,
    610                                       const uint8_t* top) {
    611   if (left != NULL) {
    612     if (top != NULL) {
    613       int j;
    614       const v8i16 TL = (v8i16)__msa_fill_h(left[-1]);
    615       const v16u8 T1 = LD_UB(top);
    616       const v16i8 zero = { 0 };
    617       const v8i16 T  = (v8i16)__msa_ilvr_b(zero, (v16i8)T1);
    618       const v8i16 d = T - TL;
    619       for (j = 0; j < 8; j += 4) {
    620         uint64_t out0, out1, out2, out3;
    621         v16i8 t0, t1;
    622         v8i16 r0 = (v8i16)__msa_fill_h(left[j + 0]);
    623         v8i16 r1 = (v8i16)__msa_fill_h(left[j + 1]);
    624         v8i16 r2 = (v8i16)__msa_fill_h(left[j + 2]);
    625         v8i16 r3 = (v8i16)__msa_fill_h(left[j + 3]);
    626         ADD4(d, r0, d, r1, d, r2, d, r3, r0, r1, r2, r3);
    627         CLIP_SH4_0_255(r0, r1, r2, r3);
    628         PCKEV_B2_SB(r1, r0, r3, r2, t0, t1);
    629         out0 = __msa_copy_s_d((v2i64)t0, 0);
    630         out1 = __msa_copy_s_d((v2i64)t0, 1);
    631         out2 = __msa_copy_s_d((v2i64)t1, 0);
    632         out3 = __msa_copy_s_d((v2i64)t1, 1);
    633         SD4(out0, out1, out2, out3, dst, BPS);
    634         dst += 4 * BPS;
    635       }
    636     } else {
    637       HorizontalPred8x8(dst, left);
    638     }
    639   } else {
    640     if (top != NULL) {
    641       VerticalPred8x8(dst, top);
    642     } else {
    643       const uint64_t out = 0x8181818181818181ULL;
    644       STORE8x8(out, dst);
    645     }
    646   }
    647 }
    648 
    649 static WEBP_INLINE void DCMode8x8(uint8_t* dst, const uint8_t* left,
    650                                   const uint8_t* top) {
    651   uint64_t out;
    652   v16u8 src = { 0 };
    653   if (top != NULL && left != NULL) {
    654     const uint64_t left_m = LD(left);
    655     const uint64_t top_m = LD(top);
    656     INSERT_D2_UB(left_m, top_m, src);
    657     CALC_DC8(src, out);
    658   } else if (left != NULL) {   // left but no top
    659     const uint64_t left_m = LD(left);
    660     INSERT_D2_UB(left_m, left_m, src);
    661     CALC_DC8(src, out);
    662   } else if (top != NULL) {   // top but no left
    663     const uint64_t top_m = LD(top);
    664     INSERT_D2_UB(top_m, top_m, src);
    665     CALC_DC8(src, out);
    666   } else {   // no top, no left, nothing.
    667     src = (v16u8)__msa_fill_b(0x80);
    668     out = __msa_copy_s_d((v2i64)src, 0);
    669   }
    670   STORE8x8(out, dst);
    671 }
    672 
    673 static void IntraChromaPreds_MSA(uint8_t* dst, const uint8_t* left,
    674                                  const uint8_t* top) {
    675   // U block
    676   DCMode8x8(C8DC8 + dst, left, top);
    677   VerticalPred8x8(C8VE8 + dst, top);
    678   HorizontalPred8x8(C8HE8 + dst, left);
    679   TrueMotion8x8(C8TM8 + dst, left, top);
    680   // V block
    681   dst += 8;
    682   if (top != NULL) top += 8;
    683   if (left != NULL) left += 16;
    684   DCMode8x8(C8DC8 + dst, left, top);
    685   VerticalPred8x8(C8VE8 + dst, top);
    686   HorizontalPred8x8(C8HE8 + dst, left);
    687   TrueMotion8x8(C8TM8 + dst, left, top);
    688 }
    689 
    690 //------------------------------------------------------------------------------
    691 // Metric
    692 
    693 #define PACK_DOTP_UB4_SW(in0, in1, in2, in3, out0, out1, out2, out3) do {  \
    694   v16u8 tmp0, tmp1;                                                        \
    695   v8i16 tmp2, tmp3;                                                        \
    696   ILVRL_B2_UB(in0, in1, tmp0, tmp1);                                       \
    697   HSUB_UB2_SH(tmp0, tmp1, tmp2, tmp3);                                     \
    698   DOTP_SH2_SW(tmp2, tmp3, tmp2, tmp3, out0, out1);                         \
    699   ILVRL_B2_UB(in2, in3, tmp0, tmp1);                                       \
    700   HSUB_UB2_SH(tmp0, tmp1, tmp2, tmp3);                                     \
    701   DOTP_SH2_SW(tmp2, tmp3, tmp2, tmp3, out2, out3);                         \
    702 } while (0)
    703 
    704 #define PACK_DPADD_UB4_SW(in0, in1, in2, in3, out0, out1, out2, out3) do {  \
    705   v16u8 tmp0, tmp1;                                                         \
    706   v8i16 tmp2, tmp3;                                                         \
    707   ILVRL_B2_UB(in0, in1, tmp0, tmp1);                                        \
    708   HSUB_UB2_SH(tmp0, tmp1, tmp2, tmp3);                                      \
    709   DPADD_SH2_SW(tmp2, tmp3, tmp2, tmp3, out0, out1);                         \
    710   ILVRL_B2_UB(in2, in3, tmp0, tmp1);                                        \
    711   HSUB_UB2_SH(tmp0, tmp1, tmp2, tmp3);                                      \
    712   DPADD_SH2_SW(tmp2, tmp3, tmp2, tmp3, out2, out3);                         \
    713 } while (0)
    714 
    715 static int SSE16x16_MSA(const uint8_t* a, const uint8_t* b) {
    716   uint32_t sum;
    717   v16u8 src0, src1, src2, src3, src4, src5, src6, src7;
    718   v16u8 ref0, ref1, ref2, ref3, ref4, ref5, ref6, ref7;
    719   v4i32 out0, out1, out2, out3;
    720 
    721   LD_UB8(a, BPS, src0, src1, src2, src3, src4, src5, src6, src7);
    722   LD_UB8(b, BPS, ref0, ref1, ref2, ref3, ref4, ref5, ref6, ref7);
    723   PACK_DOTP_UB4_SW(src0, ref0, src1, ref1, out0, out1, out2, out3);
    724   PACK_DPADD_UB4_SW(src2, ref2, src3, ref3, out0, out1, out2, out3);
    725   PACK_DPADD_UB4_SW(src4, ref4, src5, ref5, out0, out1, out2, out3);
    726   PACK_DPADD_UB4_SW(src6, ref6, src7, ref7, out0, out1, out2, out3);
    727   a += 8 * BPS;
    728   b += 8 * BPS;
    729   LD_UB8(a, BPS, src0, src1, src2, src3, src4, src5, src6, src7);
    730   LD_UB8(b, BPS, ref0, ref1, ref2, ref3, ref4, ref5, ref6, ref7);
    731   PACK_DPADD_UB4_SW(src0, ref0, src1, ref1, out0, out1, out2, out3);
    732   PACK_DPADD_UB4_SW(src2, ref2, src3, ref3, out0, out1, out2, out3);
    733   PACK_DPADD_UB4_SW(src4, ref4, src5, ref5, out0, out1, out2, out3);
    734   PACK_DPADD_UB4_SW(src6, ref6, src7, ref7, out0, out1, out2, out3);
    735   out0 += out1;
    736   out2 += out3;
    737   out0 += out2;
    738   sum = HADD_SW_S32(out0);
    739   return sum;
    740 }
    741 
    742 static int SSE16x8_MSA(const uint8_t* a, const uint8_t* b) {
    743   uint32_t sum;
    744   v16u8 src0, src1, src2, src3, src4, src5, src6, src7;
    745   v16u8 ref0, ref1, ref2, ref3, ref4, ref5, ref6, ref7;
    746   v4i32 out0, out1, out2, out3;
    747 
    748   LD_UB8(a, BPS, src0, src1, src2, src3, src4, src5, src6, src7);
    749   LD_UB8(b, BPS, ref0, ref1, ref2, ref3, ref4, ref5, ref6, ref7);
    750   PACK_DOTP_UB4_SW(src0, ref0, src1, ref1, out0, out1, out2, out3);
    751   PACK_DPADD_UB4_SW(src2, ref2, src3, ref3, out0, out1, out2, out3);
    752   PACK_DPADD_UB4_SW(src4, ref4, src5, ref5, out0, out1, out2, out3);
    753   PACK_DPADD_UB4_SW(src6, ref6, src7, ref7, out0, out1, out2, out3);
    754   out0 += out1;
    755   out2 += out3;
    756   out0 += out2;
    757   sum = HADD_SW_S32(out0);
    758   return sum;
    759 }
    760 
    761 static int SSE8x8_MSA(const uint8_t* a, const uint8_t* b) {
    762   uint32_t sum;
    763   v16u8 src0, src1, src2, src3, src4, src5, src6, src7;
    764   v16u8 ref0, ref1, ref2, ref3, ref4, ref5, ref6, ref7;
    765   v16u8 t0, t1, t2, t3;
    766   v4i32 out0, out1, out2, out3;
    767 
    768   LD_UB8(a, BPS, src0, src1, src2, src3, src4, src5, src6, src7);
    769   LD_UB8(b, BPS, ref0, ref1, ref2, ref3, ref4, ref5, ref6, ref7);
    770   ILVR_B4_UB(src0, src1, src2, src3, ref0, ref1, ref2, ref3, t0, t1, t2, t3);
    771   PACK_DOTP_UB4_SW(t0, t2, t1, t3, out0, out1, out2, out3);
    772   ILVR_B4_UB(src4, src5, src6, src7, ref4, ref5, ref6, ref7, t0, t1, t2, t3);
    773   PACK_DPADD_UB4_SW(t0, t2, t1, t3, out0, out1, out2, out3);
    774   out0 += out1;
    775   out2 += out3;
    776   out0 += out2;
    777   sum = HADD_SW_S32(out0);
    778   return sum;
    779 }
    780 
    781 static int SSE4x4_MSA(const uint8_t* a, const uint8_t* b) {
    782   uint32_t sum = 0;
    783   uint32_t src0, src1, src2, src3, ref0, ref1, ref2, ref3;
    784   v16u8 src = { 0 }, ref = { 0 }, tmp0, tmp1;
    785   v8i16 diff0, diff1;
    786   v4i32 out0, out1;
    787 
    788   LW4(a, BPS, src0, src1, src2, src3);
    789   LW4(b, BPS, ref0, ref1, ref2, ref3);
    790   INSERT_W4_UB(src0, src1, src2, src3, src);
    791   INSERT_W4_UB(ref0, ref1, ref2, ref3, ref);
    792   ILVRL_B2_UB(src, ref, tmp0, tmp1);
    793   HSUB_UB2_SH(tmp0, tmp1, diff0, diff1);
    794   DOTP_SH2_SW(diff0, diff1, diff0, diff1, out0, out1);
    795   out0 += out1;
    796   sum = HADD_SW_S32(out0);
    797   return sum;
    798 }
    799 
    800 //------------------------------------------------------------------------------
    801 // Quantization
    802 
    803 static int QuantizeBlock_MSA(int16_t in[16], int16_t out[16],
    804                              const VP8Matrix* const mtx) {
    805   int sum;
    806   v8i16 in0, in1, sh0, sh1, out0, out1;
    807   v8i16 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, sign0, sign1;
    808   v4i32 s0, s1, s2, s3, b0, b1, b2, b3, t0, t1, t2, t3;
    809   const v8i16 zero = { 0 };
    810   const v8i16 zigzag0 = { 0, 1, 4, 8, 5, 2, 3, 6 };
    811   const v8i16 zigzag1 = { 9, 12, 13, 10, 7, 11, 14, 15 };
    812   const v8i16 maxlevel = __msa_fill_h(MAX_LEVEL);
    813 
    814   LD_SH2(&in[0], 8, in0, in1);
    815   LD_SH2(&mtx->sharpen_[0], 8, sh0, sh1);
    816   tmp4 = __msa_add_a_h(in0, zero);
    817   tmp5 = __msa_add_a_h(in1, zero);
    818   ILVRL_H2_SH(sh0, tmp4, tmp0, tmp1);
    819   ILVRL_H2_SH(sh1, tmp5, tmp2, tmp3);
    820   HADD_SH4_SW(tmp0, tmp1, tmp2, tmp3, s0, s1, s2, s3);
    821   sign0 = (in0 < zero);
    822   sign1 = (in1 < zero);                           // sign
    823   LD_SH2(&mtx->iq_[0], 8, tmp0, tmp1);            // iq
    824   ILVRL_H2_SW(zero, tmp0, t0, t1);
    825   ILVRL_H2_SW(zero, tmp1, t2, t3);
    826   LD_SW4(&mtx->bias_[0], 4, b0, b1, b2, b3);      // bias
    827   MUL4(t0, s0, t1, s1, t2, s2, t3, s3, t0, t1, t2, t3);
    828   ADD4(b0, t0, b1, t1, b2, t2, b3, t3, b0, b1, b2, b3);
    829   SRAI_W4_SW(b0, b1, b2, b3, 17);
    830   PCKEV_H2_SH(b1, b0, b3, b2, tmp2, tmp3);
    831   tmp0 = (tmp2 > maxlevel);
    832   tmp1 = (tmp3 > maxlevel);
    833   tmp2 = (v8i16)__msa_bmnz_v((v16u8)tmp2, (v16u8)maxlevel, (v16u8)tmp0);
    834   tmp3 = (v8i16)__msa_bmnz_v((v16u8)tmp3, (v16u8)maxlevel, (v16u8)tmp1);
    835   SUB2(zero, tmp2, zero, tmp3, tmp0, tmp1);
    836   tmp2 = (v8i16)__msa_bmnz_v((v16u8)tmp2, (v16u8)tmp0, (v16u8)sign0);
    837   tmp3 = (v8i16)__msa_bmnz_v((v16u8)tmp3, (v16u8)tmp1, (v16u8)sign1);
    838   LD_SW4(&mtx->zthresh_[0], 4, t0, t1, t2, t3);   // zthresh
    839   t0 = (s0 > t0);
    840   t1 = (s1 > t1);
    841   t2 = (s2 > t2);
    842   t3 = (s3 > t3);
    843   PCKEV_H2_SH(t1, t0, t3, t2, tmp0, tmp1);
    844   tmp4 = (v8i16)__msa_bmnz_v((v16u8)zero, (v16u8)tmp2, (v16u8)tmp0);
    845   tmp5 = (v8i16)__msa_bmnz_v((v16u8)zero, (v16u8)tmp3, (v16u8)tmp1);
    846   LD_SH2(&mtx->q_[0], 8, tmp0, tmp1);
    847   MUL2(tmp4, tmp0, tmp5, tmp1, in0, in1);
    848   VSHF_H2_SH(tmp4, tmp5, tmp4, tmp5, zigzag0, zigzag1, out0, out1);
    849   ST_SH2(in0, in1, &in[0], 8);
    850   ST_SH2(out0, out1, &out[0], 8);
    851   out0 = __msa_add_a_h(out0, out1);
    852   sum = HADD_SH_S32(out0);
    853   return (sum > 0);
    854 }
    855 
    856 static int Quantize2Blocks_MSA(int16_t in[32], int16_t out[32],
    857                                const VP8Matrix* const mtx) {
    858   int nz;
    859   nz  = VP8EncQuantizeBlock(in + 0 * 16, out + 0 * 16, mtx) << 0;
    860   nz |= VP8EncQuantizeBlock(in + 1 * 16, out + 1 * 16, mtx) << 1;
    861   return nz;
    862 }
    863 
    864 //------------------------------------------------------------------------------
    865 // Entry point
    866 
    867 extern void VP8EncDspInitMSA(void);
    868 
    869 WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspInitMSA(void) {
    870   VP8ITransform = ITransform_MSA;
    871   VP8FTransform = FTransform_MSA;
    872   VP8FTransformWHT = FTransformWHT_MSA;
    873 
    874   VP8TDisto4x4 = Disto4x4_MSA;
    875   VP8TDisto16x16 = Disto16x16_MSA;
    876   VP8CollectHistogram = CollectHistogram_MSA;
    877 
    878   VP8EncPredLuma4 = Intra4Preds_MSA;
    879   VP8EncPredLuma16 = Intra16Preds_MSA;
    880   VP8EncPredChroma8 = IntraChromaPreds_MSA;
    881 
    882   VP8SSE16x16 = SSE16x16_MSA;
    883   VP8SSE16x8 = SSE16x8_MSA;
    884   VP8SSE8x8 = SSE8x8_MSA;
    885   VP8SSE4x4 = SSE4x4_MSA;
    886 
    887   VP8EncQuantizeBlock = QuantizeBlock_MSA;
    888   VP8EncQuantize2Blocks = Quantize2Blocks_MSA;
    889   VP8EncQuantizeBlockWHT = QuantizeBlock_MSA;
    890 }
    891 
    892 #else  // !WEBP_USE_MSA
    893 
    894 WEBP_DSP_INIT_STUB(VP8EncDspInitMSA)
    895 
    896 #endif  // WEBP_USE_MSA
    897