libvpx: Pull from upstream

source/libvpx/vp9/decoder/vp9_detokenize.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.
  */
 
 #include "vpx_mem/vpx_mem.h"
 #include "vpx_ports/mem.h"
 
 #include "vp9/common/vp9_blockd.h"
 #include "vp9/common/vp9_common.h"
+#include "vp9/common/vp9_entropy.h"
 
 #include "vp9/decoder/vp9_detokenize.h"
 
 #define EOB_CONTEXT_NODE            0
 #define ZERO_CONTEXT_NODE           1
 #define ONE_CONTEXT_NODE            2
 #define LOW_VAL_CONTEXT_NODE        0
 #define TWO_CONTEXT_NODE            1
 #define THREE_CONTEXT_NODE          2
 #define HIGH_LOW_CONTEXT_NODE       3
 #define CAT_ONE_CONTEXT_NODE        4
 #define CAT_THREEFOUR_CONTEXT_NODE  5
 #define CAT_THREE_CONTEXT_NODE      6
 #define CAT_FIVE_CONTEXT_NODE       7
 
 #define INCREMENT_COUNT(token)                              \
   do {                                                      \
      if (!cm->frame_parallel_decoding_mode)                 \
-       ++coef_counts[band][ctx][token];                     \
+       ++coef_counts[band][ctx][token];                      \
   } while (0)
 
-#define WRITE_COEF_CONTINUE(val, token)                  \
-  {                                                      \
-    v = (val * dqv) >> dq_shift;                         \
-    dqcoeff[scan[c]] = vp9_read_bit(r) ? -v : v;         \
-    token_cache[scan[c]] = vp9_pt_energy_class[token];   \
-    ++c;                                                 \
-    ctx = get_coef_context(nb, token_cache, c);          \
-    dqv = dq[1];                                         \
-    continue;                                            \
-  }
+static INLINE int read_coeff(const vp9_prob *probs, int n, vp9_reader *r) {
+  int i, val = 0;
+  for (i = 0; i < n; ++i)
+    val = (val << 1) | vp9_read(r, probs[i]);
+  return val;
+}
 
-#define ADJUST_COEF(prob, bits_count)                   \
-  do {                                                  \
-    val += (vp9_read(r, prob) << bits_count);           \
-  } while (0)
+static const vp9_tree_index coeff_subtree_high[TREE_SIZE(ENTROPY_TOKENS)] = {
+  2, 6,                                         /* 0 = LOW_VAL */
+  -TWO_TOKEN, 4,                                /* 1 = TWO */
+  -THREE_TOKEN, -FOUR_TOKEN,                    /* 2 = THREE */
+  8, 10,                                        /* 3 = HIGH_LOW */
+  -CATEGORY1_TOKEN, -CATEGORY2_TOKEN,           /* 4 = CAT_ONE */
+  12, 14,                                       /* 5 = CAT_THREEFOUR */
+  -CATEGORY3_TOKEN, -CATEGORY4_TOKEN,           /* 6 = CAT_THREE */
+  -CATEGORY5_TOKEN, -CATEGORY6_TOKEN            /* 7 = CAT_FIVE */
+};
 
 static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, PLANE_TYPE type,
-                       int16_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
-                       int ctx, const int16_t *scan, const int16_t *nb,
-                       vp9_reader *r) {
+                        tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
+                        int ctx, const int16_t *scan, const int16_t *nb,
+                        vp9_reader *r) {
   const int max_eob = 16 << (tx_size << 1);
   const FRAME_CONTEXT *const fc = &cm->fc;
   FRAME_COUNTS *const counts = &cm->counts;
-  const int ref = is_inter_block(&xd->mi[0]->mbmi);
+  const int ref = is_inter_block(&xd->mi[0].src_mi->mbmi);
   int band, c = 0;
   const vp9_prob (*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
       fc->coef_probs[tx_size][type][ref];
   const vp9_prob *prob;
   unsigned int (*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1] =
       counts->coef[tx_size][type][ref];
   unsigned int (*eob_branch_count)[COEFF_CONTEXTS] =
       counts->eob_branch[tx_size][type][ref];
   uint8_t token_cache[32 * 32];
   const uint8_t *band_translate = get_band_translate(tx_size);
   const int dq_shift = (tx_size == TX_32X32);
-  int v;
+  int v, token;
   int16_t dqv = dq[0];
+  const uint8_t *cat1_prob;
+  const uint8_t *cat2_prob;
+  const uint8_t *cat3_prob;
+  const uint8_t *cat4_prob;
+  const uint8_t *cat5_prob;
+  const uint8_t *cat6_prob;
+
+#if CONFIG_VP9_HIGHBITDEPTH
+  if (cm->use_highbitdepth) {
+    if (cm->bit_depth == VPX_BITS_10) {
+      cat1_prob = vp9_cat1_prob_high10;
+      cat2_prob = vp9_cat2_prob_high10;
+      cat3_prob = vp9_cat3_prob_high10;
+      cat4_prob = vp9_cat4_prob_high10;
+      cat5_prob = vp9_cat5_prob_high10;
+      cat6_prob = vp9_cat6_prob_high10;
+    } else {
+      cat1_prob = vp9_cat1_prob_high12;
+      cat2_prob = vp9_cat2_prob_high12;
+      cat3_prob = vp9_cat3_prob_high12;
+      cat4_prob = vp9_cat4_prob_high12;
+      cat5_prob = vp9_cat5_prob_high12;
+      cat6_prob = vp9_cat6_prob_high12;
+    }
+  } else {
+    cat1_prob = vp9_cat1_prob;
+    cat2_prob = vp9_cat2_prob;
+    cat3_prob = vp9_cat3_prob;
+    cat4_prob = vp9_cat4_prob;
+    cat5_prob = vp9_cat5_prob;
+    cat6_prob = vp9_cat6_prob;
+  }
+#else
+  cat1_prob = vp9_cat1_prob;
+  cat2_prob = vp9_cat2_prob;
+  cat3_prob = vp9_cat3_prob;
+  cat4_prob = vp9_cat4_prob;
+  cat5_prob = vp9_cat5_prob;
+  cat6_prob = vp9_cat6_prob;
+#endif
 
   while (c < max_eob) {
-    int val;
+    int val = -1;
     band = *band_translate++;
     prob = coef_probs[band][ctx];
     if (!cm->frame_parallel_decoding_mode)
       ++eob_branch_count[band][ctx];
     if (!vp9_read(r, prob[EOB_CONTEXT_NODE])) {
       INCREMENT_COUNT(EOB_MODEL_TOKEN);
       break;
     }
 
     while (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) {
       INCREMENT_COUNT(ZERO_TOKEN);
       dqv = dq[1];
       token_cache[scan[c]] = 0;
       ++c;
       if (c >= max_eob)
         return c;  // zero tokens at the end (no eob token)
       ctx = get_coef_context(nb, token_cache, c);
       band = *band_translate++;
       prob = coef_probs[band][ctx];
     }
 
-    // ONE_CONTEXT_NODE_0_
     if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) {
       INCREMENT_COUNT(ONE_TOKEN);
-      WRITE_COEF_CONTINUE(1, ONE_TOKEN);
+      token = ONE_TOKEN;
+      val = 1;
+    } else {
+      INCREMENT_COUNT(TWO_TOKEN);
+      token = vp9_read_tree(r, coeff_subtree_high,
+                            vp9_pareto8_full[prob[PIVOT_NODE] - 1]);
+      switch (token) {
+        case TWO_TOKEN:
+        case THREE_TOKEN:
+        case FOUR_TOKEN:
+          val = token;
+          break;
+        case CATEGORY1_TOKEN:
+          val = CAT1_MIN_VAL + read_coeff(cat1_prob, 1, r);
+          break;
+        case CATEGORY2_TOKEN:
+          val = CAT2_MIN_VAL + read_coeff(cat2_prob, 2, r);
+          break;
+        case CATEGORY3_TOKEN:
+          val = CAT3_MIN_VAL + read_coeff(cat3_prob, 3, r);
+          break;
+        case CATEGORY4_TOKEN:
+          val = CAT4_MIN_VAL + read_coeff(cat4_prob, 4, r);
+          break;
+        case CATEGORY5_TOKEN:
+          val = CAT5_MIN_VAL + read_coeff(cat5_prob, 5, r);
+          break;
+        case CATEGORY6_TOKEN:
+#if CONFIG_VP9_HIGHBITDEPTH
+          switch (cm->bit_depth) {
+            case VPX_BITS_8:
+              val = CAT6_MIN_VAL + read_coeff(cat6_prob, 14, r);
+              break;
+            case VPX_BITS_10:
+              val = CAT6_MIN_VAL + read_coeff(cat6_prob, 16, r);
+              break;
+            case VPX_BITS_12:
+              val = CAT6_MIN_VAL + read_coeff(cat6_prob, 18, r);
+              break;
+            default:
+              assert(0);
+              return -1;
+          }
+#else
+          val = CAT6_MIN_VAL + read_coeff(cat6_prob, 14, r);
+#endif
+          break;
+      }
     }
-
-    INCREMENT_COUNT(TWO_TOKEN);
-
-    prob = vp9_pareto8_full[prob[PIVOT_NODE] - 1];
-
-    if (!vp9_read(r, prob[LOW_VAL_CONTEXT_NODE])) {
-      if (!vp9_read(r, prob[TWO_CONTEXT_NODE])) {
-        WRITE_COEF_CONTINUE(2, TWO_TOKEN);
-      }
-      if (!vp9_read(r, prob[THREE_CONTEXT_NODE])) {
-        WRITE_COEF_CONTINUE(3, THREE_TOKEN);
-      }
-      WRITE_COEF_CONTINUE(4, FOUR_TOKEN);
-    }
-
-    if (!vp9_read(r, prob[HIGH_LOW_CONTEXT_NODE])) {
-      if (!vp9_read(r, prob[CAT_ONE_CONTEXT_NODE])) {
-        val = CAT1_MIN_VAL;
-        ADJUST_COEF(vp9_cat1_prob[0], 0);
-        WRITE_COEF_CONTINUE(val, CATEGORY1_TOKEN);
-      }
-      val = CAT2_MIN_VAL;
-      ADJUST_COEF(vp9_cat2_prob[0], 1);
-      ADJUST_COEF(vp9_cat2_prob[1], 0);
-      WRITE_COEF_CONTINUE(val, CATEGORY2_TOKEN);
-    }
-
-    if (!vp9_read(r, prob[CAT_THREEFOUR_CONTEXT_NODE])) {
-      if (!vp9_read(r, prob[CAT_THREE_CONTEXT_NODE])) {
-        val = CAT3_MIN_VAL;
-        ADJUST_COEF(vp9_cat3_prob[0], 2);
-        ADJUST_COEF(vp9_cat3_prob[1], 1);
-        ADJUST_COEF(vp9_cat3_prob[2], 0);
-        WRITE_COEF_CONTINUE(val, CATEGORY3_TOKEN);
-      }
-      val = CAT4_MIN_VAL;
-      ADJUST_COEF(vp9_cat4_prob[0], 3);
-      ADJUST_COEF(vp9_cat4_prob[1], 2);
-      ADJUST_COEF(vp9_cat4_prob[2], 1);
-      ADJUST_COEF(vp9_cat4_prob[3], 0);
-      WRITE_COEF_CONTINUE(val, CATEGORY4_TOKEN);
-    }
-
-    if (!vp9_read(r, prob[CAT_FIVE_CONTEXT_NODE])) {
-      val = CAT5_MIN_VAL;
-      ADJUST_COEF(vp9_cat5_prob[0], 4);
-      ADJUST_COEF(vp9_cat5_prob[1], 3);
-      ADJUST_COEF(vp9_cat5_prob[2], 2);
-      ADJUST_COEF(vp9_cat5_prob[3], 1);
-      ADJUST_COEF(vp9_cat5_prob[4], 0);
-      WRITE_COEF_CONTINUE(val, CATEGORY5_TOKEN);
-    }
-    val = 0;
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[0]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[1]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[2]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[3]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[4]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[5]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[6]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[7]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[8]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[9]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[10]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[11]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[12]);
-    val = (val << 1) | vp9_read(r, vp9_cat6_prob[13]);
-    val += CAT6_MIN_VAL;
-
-    WRITE_COEF_CONTINUE(val, CATEGORY6_TOKEN);
+    v = (val * dqv) >> dq_shift;
+    dqcoeff[scan[c]] = vp9_read_bit(r) ? -v : v;
+    token_cache[scan[c]] = vp9_pt_energy_class[token];
+    ++c;
+    ctx = get_coef_context(nb, token_cache, c);
+    dqv = dq[1];
   }
 
   return c;
 }
 
 int vp9_decode_block_tokens(VP9_COMMON *cm, MACROBLOCKD *xd,
                             int plane, int block, BLOCK_SIZE plane_bsize,
                             int x, int y, TX_SIZE tx_size, vp9_reader *r) {
   struct macroblockd_plane *const pd = &xd->plane[plane];
   const int ctx = get_entropy_context(tx_size, pd->above_context + x,
                                                pd->left_context + y);
   const scan_order *so = get_scan(xd, tx_size, pd->plane_type, block);
   const int eob = decode_coefs(cm, xd, pd->plane_type,
                                BLOCK_OFFSET(pd->dqcoeff, block), tx_size,
                                pd->dequant, ctx, so->scan, so->neighbors, r);
   vp9_set_contexts(xd, pd, plane_bsize, tx_size, eob > 0, x, y);
   return eob;
 }