Add MSA optimized ARGB Multiply/Add/Subtract row functions

source/row_msa.cc

 /*
  *  Copyright 2016 The LibYuv 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.
  */
 
@@ skipping 939 matching lines @@
     dst0 = (v16u8)__msa_pckev_b((v16i8)vec1, (v16i8)vec0);
     dst1 = (v16u8)__msa_pckev_b((v16i8)vec7, (v16i8)vec6);
     ST_UB(dst0, dst_u);
     ST_UB(dst1, dst_v);
     src_argb += 64;
     dst_u += 16;
     dst_v += 16;
   }
 }
 
+void ARGBMultiplyRow_MSA(const uint8* src_argb0,
+                         const uint8* src_argb1,
+                         uint8* dst_argb,
+                         int width) {
+  int x;
+  v16u8 src0, src1, dst0;
+  v8u16 vec0, vec1, vec2, vec3;
+  v4u32 reg0, reg1, reg2, reg3;
+  v8i16 zero = {0};
+
+  for (x = 0; x < width; x += 4) {
+    src0 = (v16u8)__msa_ld_b((v16i8*)src_argb0, 0);
+    src1 = (v16u8)__msa_ld_b((v16i8*)src_argb1, 0);
+    vec0 = (v8u16)__msa_ilvr_b((v16i8)src0, (v16i8)src0);
+    vec1 = (v8u16)__msa_ilvl_b((v16i8)src0, (v16i8)src0);
+    vec2 = (v8u16)__msa_ilvr_b((v16i8)zero, (v16i8)src1);
+    vec3 = (v8u16)__msa_ilvl_b((v16i8)zero, (v16i8)src1);
+    reg0 = (v4u32)__msa_ilvr_h(zero, (v8i16)vec0);
+    reg1 = (v4u32)__msa_ilvl_h(zero, (v8i16)vec0);
+    reg2 = (v4u32)__msa_ilvr_h(zero, (v8i16)vec1);
+    reg3 = (v4u32)__msa_ilvl_h(zero, (v8i16)vec1);
+    reg0 *= (v4u32)__msa_ilvr_h(zero, (v8i16)vec2);
+    reg1 *= (v4u32)__msa_ilvl_h(zero, (v8i16)vec2);
+    reg2 *= (v4u32)__msa_ilvr_h(zero, (v8i16)vec3);
+    reg3 *= (v4u32)__msa_ilvl_h(zero, (v8i16)vec3);
+    reg0 = (v4u32)__msa_srai_w((v4i32)reg0, 16);
+    reg1 = (v4u32)__msa_srai_w((v4i32)reg1, 16);
+    reg2 = (v4u32)__msa_srai_w((v4i32)reg2, 16);
+    reg3 = (v4u32)__msa_srai_w((v4i32)reg3, 16);
+    vec0 = (v8u16)__msa_pckev_h((v8i16)reg1, (v8i16)reg0);
+    vec1 = (v8u16)__msa_pckev_h((v8i16)reg3, (v8i16)reg2);
+    dst0 = (v16u8)__msa_pckev_b((v16i8)vec1, (v16i8)vec0);
+    ST_UB(dst0, dst_argb);
+    src_argb0 += 16;
+    src_argb1 += 16;
+    dst_argb += 16;
+  }
+}
+
+void ARGBAddRow_MSA(const uint8* src_argb0,
+                    const uint8* src_argb1,
+                    uint8* dst_argb,
+                    int width) {
+  int x;
+  v16u8 src0, src1, src2, src3, dst0, dst1;
+
+  for (x = 0; x < width; x += 8) {
+    src0 = (v16u8)__msa_ld_b((v16i8*)src_argb0, 0);
+    src1 = (v16u8)__msa_ld_b((v16i8*)src_argb0, 16);
+    src2 = (v16u8)__msa_ld_b((v16i8*)src_argb1, 0);
+    src3 = (v16u8)__msa_ld_b((v16i8*)src_argb1, 16);
+    dst0 = __msa_adds_u_b(src0, src2);
+    dst1 = __msa_adds_u_b(src1, src3);
+    ST_UB2(dst0, dst1, dst_argb, 16);
+    src_argb0 += 32;
+    src_argb1 += 32;
+    dst_argb += 32;
+  }
+}
+
+void ARGBSubtractRow_MSA(const uint8* src_argb0,
+                         const uint8* src_argb1,
+                         uint8* dst_argb,
+                         int width) {
+  int x;
+  v16u8 src0, src1, src2, src3, dst0, dst1;
+
+  for (x = 0; x < width; x += 8) {
+    src0 = (v16u8)__msa_ld_b((v16i8*)src_argb0, 0);
+    src1 = (v16u8)__msa_ld_b((v16i8*)src_argb0, 16);
+    src2 = (v16u8)__msa_ld_b((v16i8*)src_argb1, 0);
+    src3 = (v16u8)__msa_ld_b((v16i8*)src_argb1, 16);
+    dst0 = __msa_subs_u_b(src0, src2);
+    dst1 = __msa_subs_u_b(src1, src3);
+    ST_UB2(dst0, dst1, dst_argb, 16);
+    src_argb0 += 32;
+    src_argb1 += 32;
+    dst_argb += 32;
+  }
+}
+
 void ARGB4444ToARGBRow_MSA(const uint8* src_argb4444,
                            uint8* dst_argb,
                            int width) {
   int x;
   v16u8 src0, src1;
   v8u16 vec0, vec1, vec2, vec3;
   v16u8 dst0, dst1, dst2, dst3;
 
   for (x = 0; x < width; x += 16) {
     src0 = (v16u8)__msa_ld_b((v16u8*)src_argb4444, 0);
@@ skipping 15 matching lines @@
     dst_argb += 64;
   }
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
 #endif  // !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)