libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_bitstream.c

 /*
  *  Copyright (c) 2010 The WebM 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 502 matching lines @@
 static void update_coef_probs_common(vp9_writer* const bc, VP9_COMP *cpi,
                                      TX_SIZE tx_size,
                                      vp9_coeff_stats *frame_branch_ct,
                                      vp9_coeff_probs_model *new_coef_probs) {
   vp9_coeff_probs_model *old_coef_probs = cpi->common.fc.coef_probs[tx_size];
   const vp9_prob upd = DIFF_UPDATE_PROB;
   const int entropy_nodes_update = UNCONSTRAINED_NODES;
   int i, j, k, l, t;
   switch (cpi->sf.use_fast_coef_updates) {
     case TWO_LOOP: {
-      /* dry run to see if there is any udpate at all needed */
+      /* dry run to see if there is any update at all needed */
       int savings = 0;
       int update[2] = {0, 0};
       for (i = 0; i < PLANE_TYPES; ++i) {
         for (j = 0; j < REF_TYPES; ++j) {
           for (k = 0; k < COEF_BANDS; ++k) {
             for (l = 0; l < BAND_COEFF_CONTEXTS(k); ++l) {
               for (t = 0; t < entropy_nodes_update; ++t) {
                 vp9_prob newp = new_coef_probs[i][j][k][l][t];
                 const vp9_prob oldp = old_coef_probs[i][j][k][l][t];
                 int s;
@@ skipping 198 matching lines @@
 }
 
 static void encode_quantization(VP9_COMMON *cm,
                                 struct vp9_write_bit_buffer *wb) {
   vp9_wb_write_literal(wb, cm->base_qindex, QINDEX_BITS);
   write_delta_q(wb, cm->y_dc_delta_q);
   write_delta_q(wb, cm->uv_dc_delta_q);
   write_delta_q(wb, cm->uv_ac_delta_q);
 }
 
-
 static void encode_segmentation(VP9_COMP *cpi,
                                 struct vp9_write_bit_buffer *wb) {
   int i, j;
 
   struct segmentation *seg = &cpi->common.seg;
 
   vp9_wb_write_bit(wb, seg->enabled);
   if (!seg->enabled)
     return;
 
@@ skipping 42 matching lines @@
             vp9_wb_write_bit(wb, data < 0);
           } else {
             encode_unsigned_max(wb, data, data_max);
           }
         }
       }
     }
   }
 }
 
-
 static void encode_txfm_probs(VP9_COMMON *cm, vp9_writer *w) {
   // Mode
   vp9_write_literal(w, MIN(cm->tx_mode, ALLOW_32X32), 2);
   if (cm->tx_mode >= ALLOW_32X32)
     vp9_write_bit(w, cm->tx_mode == TX_MODE_SELECT);
 
   // Probabilities
   if (cm->tx_mode == TX_MODE_SELECT) {
     int i, j;
     unsigned int ct_8x8p[TX_SIZES - 3][2];
@@ skipping 67 matching lines @@
   if (cm->log2_tile_cols < max_log2_tile_cols)
     vp9_wb_write_bit(wb, 0);
 
   // rows
   vp9_wb_write_bit(wb, cm->log2_tile_rows != 0);
   if (cm->log2_tile_rows != 0)
     vp9_wb_write_bit(wb, cm->log2_tile_rows != 1);
 }
 
 static int get_refresh_mask(VP9_COMP *cpi) {
-    if (!cpi->multi_arf_allowed && cpi->refresh_golden_frame &&
-        cpi->rc.is_src_frame_alt_ref && !cpi->use_svc) {
-      // Preserve the previously existing golden frame and update the frame in
-      // the alt ref slot instead. This is highly specific to the use of
-      // alt-ref as a forward reference, and this needs to be generalized as
-      // other uses are implemented (like RTC/temporal scaling)
-      //
-      // gld_fb_idx and alt_fb_idx need to be swapped for future frames, but
-      // that happens in vp9_encoder.c:update_reference_frames() so that it can
-      // be done outside of the recode loop.
-      return (cpi->refresh_last_frame << cpi->lst_fb_idx) |
-             (cpi->refresh_golden_frame << cpi->alt_fb_idx);
-    } else {
-      int arf_idx = cpi->alt_fb_idx;
-      if ((cpi->pass == 2) && cpi->multi_arf_allowed) {
-        const GF_GROUP *const gf_group = &cpi->twopass.gf_group;
-        arf_idx = gf_group->arf_update_idx[gf_group->index];
-      }
-      return (cpi->refresh_last_frame << cpi->lst_fb_idx) |
-             (cpi->refresh_golden_frame << cpi->gld_fb_idx) |
-             (cpi->refresh_alt_ref_frame << arf_idx);
+  if (!cpi->multi_arf_allowed && cpi->refresh_golden_frame &&
+      cpi->rc.is_src_frame_alt_ref && !cpi->use_svc) {
+    // Preserve the previously existing golden frame and update the frame in
+    // the alt ref slot instead. This is highly specific to the use of
+    // alt-ref as a forward reference, and this needs to be generalized as
+    // other uses are implemented (like RTC/temporal scaling)
+    //
+    // gld_fb_idx and alt_fb_idx need to be swapped for future frames, but
+    // that happens in vp9_encoder.c:update_reference_frames() so that it can
+    // be done outside of the recode loop.
+    return (cpi->refresh_last_frame << cpi->lst_fb_idx) |
+           (cpi->refresh_golden_frame << cpi->alt_fb_idx);
+  } else {
+    int arf_idx = cpi->alt_fb_idx;
+    if ((cpi->pass == 2) && cpi->multi_arf_allowed) {
+      const GF_GROUP *const gf_group = &cpi->twopass.gf_group;
+      arf_idx = gf_group->arf_update_idx[gf_group->index];
     }
+    return (cpi->refresh_last_frame << cpi->lst_fb_idx) |
+           (cpi->refresh_golden_frame << cpi->gld_fb_idx) |
+           (cpi->refresh_alt_ref_frame << arf_idx);
+  }
 }
 
 static size_t encode_tiles(VP9_COMP *cpi, uint8_t *data_ptr) {
   VP9_COMMON *const cm = &cpi->common;
   vp9_writer residual_bc;
 
   int tile_row, tile_col;
   TOKENEXTRA *tok[4][1 << 6], *tok_end;
   size_t total_size = 0;
   const int tile_cols = 1 << cm->log2_tile_cols;
@@ skipping 136 matching lines @@
     if (cm->profile > PROFILE_1) {
       assert(cm->bit_depth > BITS_8);
       vp9_wb_write_bit(wb, cm->bit_depth - BITS_10);
     }
     vp9_wb_write_literal(wb, cs, 3);
     if (cs != SRGB) {
       vp9_wb_write_bit(wb, 0);  // 0: [16, 235] (i.e. xvYCC), 1: [0, 255]
       if (cm->profile == PROFILE_1 || cm->profile == PROFILE_3) {
         vp9_wb_write_bit(wb, cm->subsampling_x);
         vp9_wb_write_bit(wb, cm->subsampling_y);
-        vp9_wb_write_bit(wb, 0);  // has extra plane
+        vp9_wb_write_bit(wb, 0);  // unused
       }
     } else {
       assert(cm->profile == PROFILE_1 || cm->profile == PROFILE_3);
-      vp9_wb_write_bit(wb, 0);  // has extra plane
+      vp9_wb_write_bit(wb, 0);  // unused
     }
 
     write_frame_size(cm, wb);
   } else {
     if (!cm->show_frame)
       vp9_wb_write_bit(wb, cm->intra_only);
 
     if (!cm->error_resilient_mode)
       vp9_wb_write_literal(wb, cm->reset_frame_context, 2);
 
@@ skipping 130 matching lines @@
 
   first_part_size = write_compressed_header(cpi, data);
   data += first_part_size;
   // TODO(jbb): Figure out what to do if first_part_size > 16 bits.
   vp9_wb_write_literal(&saved_wb, (int)first_part_size, 16);
 
   data += encode_tiles(cpi, data);
 
   *size = data - dest;
 }
-