Fix typos and minor stylistic cleanup

Change-Id: I32e43474e8651ef2eb181d24860a8f118cfea7bf

3 files changed, 35 insertions, 37 deletions

diff --git a/vp9/encoder/vp9_encodeframe.c b/vp9/encoder/vp9_encodeframe.c
index 92153dd5f..51bd4477d 100644
--- a/vp9/encoder/vp9_encodeframe.c
+++ b/vp9/encoder/vp9_encodeframe.c
@@ -574,6 +574,7 @@ static void pick_sb_modes(VP9_COMP *cpi, int mi_row, int mi_col,
   MACROBLOCK *const x = &cpi->mb;
   MACROBLOCKD *const xd = &x->e_mbd;
 
+  // Use the lower precision, but faster, 32x32 fdct for mode selection.
   x->use_lp32x32fdct = 1;
 
   if (bsize < BLOCK_8X8) {
@@ -1757,8 +1758,6 @@ static void rd_pick_partition(VP9_COMP *cpi, TOKENEXTRA **tp, int mi_row,
     }
   }
 
-  // Use 4 subblocks' motion estimation results to speed up current
-  // partition's checking.
   x->fast_ms = 0;
   x->pred_mv.as_int = 0;
   x->subblock_ref = 0;
@@ -2178,7 +2177,7 @@ static void encode_frame_internal(VP9_COMP *cpi) {
     build_activity_map(cpi);
   }
 
-  // re-initencode frame context.
+  // Re-initialize encode frame context.
   init_encode_frame_mb_context(cpi);
 
   vp9_zero(cpi->rd_comp_pred_diff);
@@ -2414,7 +2413,7 @@ void vp9_encode_frame(VP9_COMP *cpi) {
   // decoder such that we allow compound where one of the 3 buffers has a
   // different sign bias and that buffer is then the fixed ref. However, this
   // requires further work in the rd loop. For now the only supported encoder
-  // side behaviour is where the ALT ref buffer has opposite sign bias to
+  // side behavior is where the ALT ref buffer has opposite sign bias to
   // the other two.
   if ((cm->ref_frame_sign_bias[ALTREF_FRAME]
        == cm->ref_frame_sign_bias[GOLDEN_FRAME])
@@ -2481,13 +2480,12 @@ void vp9_encode_frame(VP9_COMP *cpi) {
       filter_type = SWITCHABLE;
     }
 
-    /* transform size (4x4, 8x8, 16x16 or select-per-mb) selection */
-
     cpi->mb.e_mbd.lossless = 0;
     if (cpi->oxcf.lossless) {
       cpi->mb.e_mbd.lossless = 1;
     }
 
+    /* transform size selection (4x4, 8x8, 16x16 or select-per-mb) */
     select_tx_mode(cpi);
     cpi->common.comp_pred_mode = pred_type;
     cpi->common.mcomp_filter_type = filter_type;
diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index ae09309b4..c2feabaf9 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -1217,6 +1217,7 @@ static int64_t rd_pick_intra_sby_mode(VP9_COMP *cpi, MACROBLOCK *x,
   MB_PREDICTION_MODE mode;
   MB_PREDICTION_MODE mode_selected = DC_PRED;
   MACROBLOCKD *const xd = &x->e_mbd;
+  MODE_INFO *const mic = xd->mode_info_context;
   int this_rate, this_rate_tokenonly, s;
   int64_t this_distortion, this_rd;
   TX_SIZE best_tx = TX_4X4;
@@ -1230,7 +1231,6 @@ static int64_t rd_pick_intra_sby_mode(VP9_COMP *cpi, MACROBLOCK *x,
   /* Y Search for intra prediction mode */
   for (mode = DC_PRED; mode <= TM_PRED; mode++) {
     int64_t local_tx_cache[TX_MODES];
-    MODE_INFO *const mic = xd->mode_info_context;
     const int mis = xd->mode_info_stride;
 
     if (cpi->common.frame_type == KEY_FRAME) {
@@ -1240,7 +1240,7 @@ static int64_t rd_pick_intra_sby_mode(VP9_COMP *cpi, MACROBLOCK *x,
 
       bmode_costs = x->y_mode_costs[A][L];
     }
-    x->e_mbd.mode_info_context->mbmi.mode = mode;
+    mic->mbmi.mode = mode;
 
     super_block_yrd(cpi, x, &this_rate_tokenonly, &this_distortion, &s, NULL,
                     bsize, local_tx_cache, best_rd);
@@ -1254,7 +1254,7 @@ static int64_t rd_pick_intra_sby_mode(VP9_COMP *cpi, MACROBLOCK *x,
     if (this_rd < best_rd) {
       mode_selected   = mode;
       best_rd         = this_rd;
-      best_tx         = x->e_mbd.mode_info_context->mbmi.txfm_size;
+      best_tx         = mic->mbmi.txfm_size;
       *rate           = this_rate;
       *rate_tokenonly = this_rate_tokenonly;
       *distortion     = this_distortion;
@@ -1272,8 +1272,8 @@ static int64_t rd_pick_intra_sby_mode(VP9_COMP *cpi, MACROBLOCK *x,
     }
   }
 
-  x->e_mbd.mode_info_context->mbmi.mode = mode_selected;
-  x->e_mbd.mode_info_context->mbmi.txfm_size = best_tx;
+  mic->mbmi.mode = mode_selected;
+  mic->mbmi.txfm_size = best_tx;
 
   return best_rd;
 }
@@ -1437,7 +1437,7 @@ static int labels2mode(MACROBLOCK *x, int i,
                        int *mvjcost, int *mvcost[2], VP9_COMP *cpi) {
   MACROBLOCKD *const xd = &x->e_mbd;
   MODE_INFO *const mic = xd->mode_info_context;
-  MB_MODE_INFO * mbmi = &mic->mbmi;
+  MB_MODE_INFO *mbmi = &mic->mbmi;
   int cost = 0, thismvcost = 0;
   int idx, idy;
   const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[mbmi->sb_type];
diff --git a/vp9/encoder/vp9_variance_c.c b/vp9/encoder/vp9_variance_c.c
index 23e776791..325925cbd 100644
--- a/vp9/encoder/vp9_variance_c.c
+++ b/vp9/encoder/vp9_variance_c.c
@@ -46,7 +46,7 @@ unsigned int vp9_sub_pixel_variance64x32_c(const uint8_t *src_ptr,
                                            const uint8_t *dst_ptr,
                                            int dst_pixels_per_line,
                                            unsigned int *sse) {
-  uint16_t fdata3[65 * 64];  // Temp data bufffer used in filtering
+  uint16_t fdata3[65 * 64];  // Temp data buffer used in filtering
   uint8_t temp2[68 * 64];
   const int16_t *hfilter, *vfilter;
 
@@ -68,7 +68,7 @@ unsigned int vp9_sub_pixel_avg_variance64x32_c(const uint8_t *src_ptr,
                                                int dst_pixels_per_line,
                                                unsigned int *sse,
                                                const uint8_t *second_pred) {
-  uint16_t fdata3[65 * 64];  // Temp data bufffer used in filtering
+  uint16_t fdata3[65 * 64];  // Temp data buffer used in filtering
   uint8_t temp2[68 * 64];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 64 * 64);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -103,7 +103,7 @@ unsigned int vp9_sub_pixel_variance32x64_c(const uint8_t *src_ptr,
                                            const uint8_t *dst_ptr,
                                            int dst_pixels_per_line,
                                            unsigned int *sse) {
-  uint16_t fdata3[65 * 64];  // Temp data bufffer used in filtering
+  uint16_t fdata3[65 * 64];  // Temp data buffer used in filtering
   uint8_t temp2[68 * 64];
   const int16_t *hfilter, *vfilter;
 
@@ -125,7 +125,7 @@ unsigned int vp9_sub_pixel_avg_variance32x64_c(const uint8_t *src_ptr,
                                                int dst_pixels_per_line,
                                                unsigned int *sse,
                                                const uint8_t *second_pred) {
-  uint16_t fdata3[65 * 64];  // Temp data bufffer used in filtering
+  uint16_t fdata3[65 * 64];  // Temp data buffer used in filtering
   uint8_t temp2[68 * 64];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 32 * 64);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -160,7 +160,7 @@ unsigned int vp9_sub_pixel_variance32x16_c(const uint8_t *src_ptr,
                                            const uint8_t *dst_ptr,
                                            int dst_pixels_per_line,
                                            unsigned int *sse) {
-  uint16_t fdata3[33 * 32];  // Temp data bufffer used in filtering
+  uint16_t fdata3[33 * 32];  // Temp data buffer used in filtering
   uint8_t temp2[36 * 32];
   const int16_t *hfilter, *vfilter;
 
@@ -182,7 +182,7 @@ unsigned int vp9_sub_pixel_avg_variance32x16_c(const uint8_t *src_ptr,
                                                int dst_pixels_per_line,
                                                unsigned int *sse,
                                                const uint8_t *second_pred) {
-  uint16_t fdata3[33 * 32];  // Temp data bufffer used in filtering
+  uint16_t fdata3[33 * 32];  // Temp data buffer used in filtering
   uint8_t temp2[36 * 32];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 32 * 16);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -217,7 +217,7 @@ unsigned int vp9_sub_pixel_variance16x32_c(const uint8_t *src_ptr,
                                            const uint8_t *dst_ptr,
                                            int dst_pixels_per_line,
                                            unsigned int *sse) {
-  uint16_t fdata3[33 * 32];  // Temp data bufffer used in filtering
+  uint16_t fdata3[33 * 32];  // Temp data buffer used in filtering
   uint8_t temp2[36 * 32];
   const int16_t *hfilter, *vfilter;
 
@@ -239,7 +239,7 @@ unsigned int vp9_sub_pixel_avg_variance16x32_c(const uint8_t *src_ptr,
                                                int dst_pixels_per_line,
                                                unsigned int *sse,
                                                const uint8_t *second_pred) {
-  uint16_t fdata3[33 * 32];  // Temp data bufffer used in filtering
+  uint16_t fdata3[33 * 32];  // Temp data buffer used in filtering
   uint8_t temp2[36 * 32];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 16 * 32);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -440,7 +440,7 @@ unsigned int vp9_sub_pixel_variance4x4_c(const uint8_t *src_ptr,
                                          unsigned int *sse) {
   uint8_t temp2[20 * 16];
   const int16_t *hfilter, *vfilter;
-  uint16_t fdata3[5 * 4];  // Temp data bufffer used in filtering
+  uint16_t fdata3[5 * 4];  // Temp data buffer used in filtering
 
   hfilter = VP9_BILINEAR_FILTERS_2TAP(xoffset);
   vfilter = VP9_BILINEAR_FILTERS_2TAP(yoffset);
@@ -466,7 +466,7 @@ unsigned int vp9_sub_pixel_avg_variance4x4_c(const uint8_t *src_ptr,
   uint8_t temp2[20 * 16];
   const int16_t *hfilter, *vfilter;
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 4 * 4);  // compound pred buffer
-  uint16_t fdata3[5 * 4];  // Temp data bufffer used in filtering
+  uint16_t fdata3[5 * 4];  // Temp data buffer used in filtering
 
   hfilter = VP9_BILINEAR_FILTERS_2TAP(xoffset);
   vfilter = VP9_BILINEAR_FILTERS_2TAP(yoffset);
@@ -488,7 +488,7 @@ unsigned int vp9_sub_pixel_variance8x8_c(const uint8_t *src_ptr,
                                          const uint8_t *dst_ptr,
                                          int dst_pixels_per_line,
                                          unsigned int *sse) {
-  uint16_t fdata3[9 * 8];  // Temp data bufffer used in filtering
+  uint16_t fdata3[9 * 8];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   const int16_t *hfilter, *vfilter;
 
@@ -510,7 +510,7 @@ unsigned int vp9_sub_pixel_avg_variance8x8_c(const uint8_t *src_ptr,
                                              int dst_pixels_per_line,
                                              unsigned int *sse,
                                              const uint8_t *second_pred) {
-  uint16_t fdata3[9 * 8];  // Temp data bufffer used in filtering
+  uint16_t fdata3[9 * 8];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 8 * 8);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -532,7 +532,7 @@ unsigned int vp9_sub_pixel_variance16x16_c(const uint8_t *src_ptr,
                                            const uint8_t *dst_ptr,
                                            int dst_pixels_per_line,
                                            unsigned int *sse) {
-  uint16_t fdata3[17 * 16];  // Temp data bufffer used in filtering
+  uint16_t fdata3[17 * 16];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   const int16_t *hfilter, *vfilter;
 
@@ -577,7 +577,7 @@ unsigned int vp9_sub_pixel_variance64x64_c(const uint8_t *src_ptr,
                                            const uint8_t *dst_ptr,
                                            int dst_pixels_per_line,
                                            unsigned int *sse) {
-  uint16_t fdata3[65 * 64];  // Temp data bufffer used in filtering
+  uint16_t fdata3[65 * 64];  // Temp data buffer used in filtering
   uint8_t temp2[68 * 64];
   const int16_t *hfilter, *vfilter;
 
@@ -599,7 +599,7 @@ unsigned int vp9_sub_pixel_avg_variance64x64_c(const uint8_t *src_ptr,
                                                int dst_pixels_per_line,
                                                unsigned int *sse,
                                                const uint8_t *second_pred) {
-  uint16_t fdata3[65 * 64];  // Temp data bufffer used in filtering
+  uint16_t fdata3[65 * 64];  // Temp data buffer used in filtering
   uint8_t temp2[68 * 64];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 64 * 64);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -621,7 +621,7 @@ unsigned int vp9_sub_pixel_variance32x32_c(const uint8_t *src_ptr,
                                            const uint8_t *dst_ptr,
                                            int dst_pixels_per_line,
                                            unsigned int *sse) {
-  uint16_t fdata3[33 * 32];  // Temp data bufffer used in filtering
+  uint16_t fdata3[33 * 32];  // Temp data buffer used in filtering
   uint8_t temp2[36 * 32];
   const int16_t *hfilter, *vfilter;
 
@@ -643,7 +643,7 @@ unsigned int vp9_sub_pixel_avg_variance32x32_c(const uint8_t *src_ptr,
                                                int dst_pixels_per_line,
                                                unsigned int *sse,
                                                const uint8_t *second_pred) {
-  uint16_t fdata3[33 * 32];  // Temp data bufffer used in filtering
+  uint16_t fdata3[33 * 32];  // Temp data buffer used in filtering
   uint8_t temp2[36 * 32];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 32 * 32);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -785,7 +785,7 @@ unsigned int vp9_sub_pixel_variance16x8_c(const uint8_t *src_ptr,
                                           const uint8_t *dst_ptr,
                                           int dst_pixels_per_line,
                                           unsigned int *sse) {
-  uint16_t fdata3[16 * 9];  // Temp data bufffer used in filtering
+  uint16_t fdata3[16 * 9];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   const int16_t *hfilter, *vfilter;
 
@@ -807,7 +807,7 @@ unsigned int vp9_sub_pixel_avg_variance16x8_c(const uint8_t *src_ptr,
                                               int dst_pixels_per_line,
                                               unsigned int *sse,
                                               const uint8_t *second_pred) {
-  uint16_t fdata3[16 * 9];  // Temp data bufffer used in filtering
+  uint16_t fdata3[16 * 9];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 16 * 8);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -829,7 +829,7 @@ unsigned int vp9_sub_pixel_variance8x16_c(const uint8_t *src_ptr,
                                           const uint8_t *dst_ptr,
                                           int dst_pixels_per_line,
                                           unsigned int *sse) {
-  uint16_t fdata3[9 * 16];  // Temp data bufffer used in filtering
+  uint16_t fdata3[9 * 16];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   const int16_t *hfilter, *vfilter;
 
@@ -851,7 +851,7 @@ unsigned int vp9_sub_pixel_avg_variance8x16_c(const uint8_t *src_ptr,
                                               int dst_pixels_per_line,
                                               unsigned int *sse,
                                               const uint8_t *second_pred) {
-  uint16_t fdata3[9 * 16];  // Temp data bufffer used in filtering
+  uint16_t fdata3[9 * 16];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 8 * 16);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -873,7 +873,7 @@ unsigned int vp9_sub_pixel_variance8x4_c(const uint8_t *src_ptr,
                                          const uint8_t *dst_ptr,
                                          int dst_pixels_per_line,
                                          unsigned int *sse) {
-  uint16_t fdata3[8 * 5];  // Temp data bufffer used in filtering
+  uint16_t fdata3[8 * 5];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   const int16_t *hfilter, *vfilter;
 
@@ -895,7 +895,7 @@ unsigned int vp9_sub_pixel_avg_variance8x4_c(const uint8_t *src_ptr,
                                              int dst_pixels_per_line,
                                              unsigned int *sse,
                                              const uint8_t *second_pred) {
-  uint16_t fdata3[8 * 5];  // Temp data bufffer used in filtering
+  uint16_t fdata3[8 * 5];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 8 * 4);  // compound pred buffer
   const int16_t *hfilter, *vfilter;
@@ -917,7 +917,7 @@ unsigned int vp9_sub_pixel_variance4x8_c(const uint8_t *src_ptr,
                                          const uint8_t *dst_ptr,
                                          int dst_pixels_per_line,
                                          unsigned int *sse) {
-  uint16_t fdata3[5 * 8];  // Temp data bufffer used in filtering
+  uint16_t fdata3[5 * 8];  // Temp data buffer used in filtering
   // FIXME(jingning,rbultje): this temp2 buffer probably doesn't need to be
   // of this big? same issue appears in all other block size settings.
   uint8_t temp2[20 * 16];
@@ -941,7 +941,7 @@ unsigned int vp9_sub_pixel_avg_variance4x8_c(const uint8_t *src_ptr,
                                              int dst_pixels_per_line,
                                              unsigned int *sse,
                                              const uint8_t *second_pred) {
-  uint16_t fdata3[5 * 8];  // Temp data bufffer used in filtering
+  uint16_t fdata3[5 * 8];  // Temp data buffer used in filtering
   uint8_t temp2[20 * 16];
   DECLARE_ALIGNED_ARRAY(16, uint8_t, temp3, 4 * 8);  // compound pred buffer
   const int16_t *hfilter, *vfilter;