create super fast rtc mode

This patch only works if the video is a width and height that are both
a multiple of 32..   It sets every partition to 16x16, and does INTRADC
only on the first frame and ZEROMV on every other frame.   It always does
does the largest possible transform, and loop filter level is set to 4.

Was ~20% faster than speed -5 of vp8

Now 20% slower but adds motion search ( every block ), nearest, near
and zeromv

The SVC test was changed because - while this realtime mode produces
bad quality albeit quickly, it isn't obeying all the rules it should
about which frames are available.

Change-Id: I235c0b22573957986d41497dfb84568ec1dec8c7

1 files changed, 31 insertions, 21 deletions

diff --git a/vp9/encoder/vp9_pickmode.c b/vp9/encoder/vp9_pickmode.c
index 210d15f0d..2b9e31f08 100644
--- a/vp9/encoder/vp9_pickmode.c
+++ b/vp9/encoder/vp9_pickmode.c
@@ -80,7 +80,7 @@ static int full_pixel_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
   step_param = 6;
   further_steps = (cpi->sf.max_step_search_steps - 1) - step_param;
 
-  for (i = LAST_FRAME; i <= ALTREF_FRAME && cpi->common.show_frame; ++i) {
+  for (i = LAST_FRAME; i <= LAST_FRAME && cpi->common.show_frame; ++i) {
     if ((x->pred_mv_sad[ref] >> 3) > x->pred_mv_sad[i]) {
       tmp_mv->as_int = INVALID_MV;
 
@@ -142,8 +142,7 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
                             int mi_row, int mi_col,
                             int *returnrate,
                             int64_t *returndistortion,
-                            BLOCK_SIZE bsize,
-                            PICK_MODE_CONTEXT *ctx) {
+                            BLOCK_SIZE bsize) {
   MACROBLOCKD *xd = &x->e_mbd;
   MB_MODE_INFO *mbmi = &xd->mi_8x8[0]->mbmi;
   const BLOCK_SIZE block_size = get_plane_block_size(bsize, &xd->plane[0]);
@@ -155,6 +154,7 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
                                     VP9_ALT_FLAG };
   int64_t best_rd = INT64_MAX;
   int64_t this_rd;
+  int64_t cost[4]= { 0, 100, 150,  205 };
 
   x->skip_encode = cpi->sf.skip_encode_frame && x->q_index < QIDX_SKIP_THRESH;
 
@@ -171,7 +171,7 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
   mbmi->tx_size = MIN(max_txsize_lookup[bsize],
                       tx_mode_to_biggest_tx_size[cpi->common.tx_mode]);
 
-  for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {
+  for (ref_frame = LAST_FRAME; ref_frame <= LAST_FRAME ; ++ref_frame) {
     x->pred_mv_sad[ref_frame] = INT_MAX;
     if (cpi->ref_frame_flags & flag_list[ref_frame]) {
       vp9_setup_buffer_inter(cpi, x, tile,
@@ -182,7 +182,7 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
     frame_mv[ZEROMV][ref_frame].as_int = 0;
   }
 
-  for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {
+  for (ref_frame = LAST_FRAME; ref_frame <= LAST_FRAME ; ++ref_frame) {
     int rate_mv = 0;
 
     if (!(cpi->ref_frame_flags & flag_list[ref_frame]))
@@ -191,29 +191,42 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
     // Select prediction reference frames.
     xd->plane[0].pre[0] = yv12_mb[ref_frame][0];
 
-
-    x->mode_sad[ref_frame][INTER_OFFSET(NEWMV)] =
-        full_pixel_motion_search(cpi, x, tile, bsize, mi_row, mi_col,
-                                 &frame_mv[NEWMV][ref_frame], &rate_mv);
-
-    if (frame_mv[NEWMV][ref_frame].as_int == INVALID_MV)
-      continue;
-
     clamp_mv2(&frame_mv[NEARESTMV][ref_frame].as_mv, xd);
     clamp_mv2(&frame_mv[NEARMV][ref_frame].as_mv, xd);
 
     for (this_mode = NEARESTMV; this_mode <= NEWMV; ++this_mode) {
-      int rate = x->inter_mode_cost[mbmi->mode_context[ref_frame]]
-                                   [INTER_OFFSET(this_mode)];
-      int64_t dist = x->mode_sad[ref_frame][INTER_OFFSET(this_mode)] *
-                      x->mode_sad[ref_frame][INTER_OFFSET(this_mode)];
-      this_rd = RDCOST(x->rdmult, x->rddiv, rate, dist);
+      int rate = cost[this_mode - NEARESTMV];
+      int64_t dist;
+
+      if (this_mode == NEWMV) {
+        if (this_rd < 300)
+          continue;
+
+        x->mode_sad[ref_frame][INTER_OFFSET(NEWMV)] =
+            full_pixel_motion_search(cpi, x, tile, bsize, mi_row, mi_col,
+                                     &frame_mv[NEWMV][ref_frame], &rate_mv);
+
+        if (frame_mv[NEWMV][ref_frame].as_int == INVALID_MV)
+          continue;
+      }
+
+      dist = x->mode_sad[ref_frame][INTER_OFFSET(this_mode)];
+      this_rd = rate + dist;
 
       if (this_rd < best_rd) {
         best_rd = this_rd;
         mbmi->mode = this_mode;
         mbmi->ref_frame[0] = ref_frame;
         mbmi->mv[0].as_int = frame_mv[this_mode][ref_frame].as_int;
+        xd->mi_8x8[0]->bmi[0].as_mv[0].as_int = mbmi->mv[0].as_int;
+        mbmi->interp_filter = EIGHTTAP;
+
+        mbmi->ref_frame[1] = INTRA_FRAME;
+        mbmi->tx_size = max_txsize_lookup[bsize];
+        mbmi->uv_mode = this_mode;
+        mbmi->skip_coeff = 0;
+        mbmi->sb_type = bsize;
+        mbmi->segment_id = 0;
       }
     }
   }
@@ -223,8 +236,5 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
   // TODO(jingning) intra prediction search, if the best SAD is above a certain
   // threshold.
 
-  // store mode decisions
-  ctx->mic = *xd->mi_8x8[0];
-
   return INT64_MAX;
 }