Add MSA optimized YUY2ToI422, YUY2ToI420, UYVYToI422, UYVYToI420 functions

include/libyuv/macros_msa.h

Index: include/libyuv/macros_msa.h
diff --git a/include/libyuv/macros_msa.h b/include/libyuv/macros_msa.h
index 8a81e8213afba38737e1d8def52ac7c47b25139f..016200f97340d400799ac44a462711b12fb6018e 100644
--- a/include/libyuv/macros_msa.h
+++ b/include/libyuv/macros_msa.h
@@ -40,6 +40,13 @@
 }
 #define LD_UB4(...) LD_B4(v16u8, __VA_ARGS__)
 
+#define LD_B8(RTYPE, psrc, stride,                                    \
+              out0, out1, out2, out3, out4, out5, out6, out7) {       \
+  LD_B4(RTYPE, (psrc), stride, out0, out1, out2, out3);               \
+  LD_B4(RTYPE, (psrc) + 4 * stride, stride, out4, out5, out6, out7);  \
+}
+#define LD_UB8(...) LD_B8(v16u8, __VA_ARGS__)
+
 /* Description : Store two vectors with stride each having 16 'byte' sized
                  elements
    Arguments   : Inputs - in0, in1, pdst, stride
@@ -84,6 +91,62 @@
 }
 #define ILVRL_B2_UB(...) ILVRL_B2(v16u8, __VA_ARGS__)
 
+/* Description : Pack even byte elements of vector pairs
+   Arguments   : Inputs  - in0, in1, in2, in3
+                 Outputs - out0, out1
+                 Return Type - as per RTYPE
+   Details     : Even byte elements of 'in0' are copied to the left half of
+                 'out0' & even byte elements of 'in1' are copied to the right
+                 half of 'out0'.
+*/
+#define PCKEV_B2(RTYPE, in0, in1, in2, in3, out0, out1) {  \
+  out0 = (RTYPE) __msa_pckev_b((v16i8) in0, (v16i8) in1);  \
+  out1 = (RTYPE) __msa_pckev_b((v16i8) in2, (v16i8) in3);  \
+}
+#define PCKEV_B2_UB(...) PCKEV_B2(v16u8, __VA_ARGS__)
+
+#define PCKEV_B4(RTYPE, in0, in1, in2, in3, in4, in5, in6, in7,  \
+                 out0, out1, out2, out3) {                       \
+  PCKEV_B2(RTYPE, in0, in1, in2, in3, out0, out1);               \
+  PCKEV_B2(RTYPE, in4, in5, in6, in7, out2, out3);               \
+}
+#define PCKEV_B4_UB(...) PCKEV_B4(v16u8, __VA_ARGS__)
+
+/* Description : Pack odd byte elements of vector pairs
+   Arguments   : Inputs  - in0, in1, in2, in3
+                 Outputs - out0, out1
+                 Return Type - as per RTYPE
+   Details     : Odd byte elements of 'in0' are copied to the left half of
+                 'out0' & odd byte elements of 'in1' are copied to the right
+                 half of 'out0'.
+*/
+#define PCKOD_B2(RTYPE, in0, in1, in2, in3, out0, out1) {  \
+  out0 = (RTYPE) __msa_pckod_b((v16i8) in0, (v16i8) in1);  \
+  out1 = (RTYPE) __msa_pckod_b((v16i8) in2, (v16i8) in3);  \
+}
+#define PCKOD_B2_UB(...) PCKOD_B2(v16u8, __VA_ARGS__)
+
+#define PCKOD_B4(RTYPE, in0, in1, in2, in3, in4, in5, in6, in7,  \
+                 out0, out1, out2, out3) {                       \
+  PCKOD_B2(RTYPE, in0, in1, in2, in3, out0, out1);               \
+  PCKOD_B2(RTYPE, in4, in5, in6, in7, out2, out3);               \
+}
+#define PCKOD_B4_UB(...) PCKOD_B4(v16u8, __VA_ARGS__)
+
+/* Description : average with rounding (in0 + in1 + 1) / 2.
+   Arguments   : Inputs  - in0, in1, in2, in3,
+                 Outputs - out0, out1
+                 Return Type - as per RTYPE
+   Details     : Each unsigned byte element from 'in0' vector is added with
+                 each unsigned byte element from 'in1' vector. Then the average
+                 with rounding is calculated and written to 'out0'
+*/
+#define AVER_UB2(RTYPE, in0, in1, in2, in3, out0, out1) {   \
+  out0 = (RTYPE) __msa_aver_u_b((v16u8) in0, (v16u8) in1);  \
+  out1 = (RTYPE) __msa_aver_u_b((v16u8) in2, (v16u8) in3);  \
+}
+#define AVER_UB2_UB(...) AVER_UB2(v16u8, __VA_ARGS__)
+
 #endif  /* !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa) */
 
 #endif  // INCLUDE_LIBYUV_MACROS_MSA_H_