white spaces and comments for msa

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.
  */
 
 #include "libyuv/row.h"
 
 // This module is for GCC MSA
 #if !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)
 #include "libyuv/macros_msa.h"
 
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 
+// Convert 8 pixels of YUV 420 to RGB.
 #define I422TORGB(in0, in1, in2, ub, vr, ug, vg,               \
                   bb, bg, br, yg, out0, out1, out2) {          \
   v8i16 vec0_m;                                                \
   v4i32 reg0_m, reg1_m, reg2_m, reg3_m, reg4_m;                \
   v4i32 reg5_m, reg6_m, reg7_m, reg8_m, reg9_m;                \
   v4i32 max_val_m = __msa_ldi_w(255);                          \
   v8i16 zero_m = { 0 };                                        \
                                                                \
   in1 = (v16u8) __msa_ilvr_b((v16i8) in1, (v16i8) in1);        \
   in2 = (v16u8) __msa_ilvr_b((v16i8) in2, (v16i8) in2);        \
@@ skipping 521 matching lines @@
     dst_argb += 64;
   }
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
 #endif  // !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)