Port folder renaming changes from AOM

Manually cherry-picked commits:
ceef058 libvpx->libaom part2
3d26d91 libvpx -> libaom
cfea7dd vp10/ -> av1/
3a8eff7 Fix a build issue for a test
bf4202e Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc
diff --git a/av1/common/entropymv.c b/av1/common/entropymv.c
new file mode 100644
index 0000000..f3dba3f
--- /dev/null
+++ b/av1/common/entropymv.c
@@ -0,0 +1,282 @@
+/*
+ *  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 "av1/common/onyxc_int.h"
+#include "av1/common/entropymv.h"
+
+// Integer pel reference mv threshold for use of high-precision 1/8 mv
+#define COMPANDED_MVREF_THRESH 8
+
+const vpx_tree_index vp10_mv_joint_tree[TREE_SIZE(MV_JOINTS)] = {
+  -MV_JOINT_ZERO, 2, -MV_JOINT_HNZVZ, 4, -MV_JOINT_HZVNZ, -MV_JOINT_HNZVNZ
+};
+
+/* clang-format off */
+const vpx_tree_index vp10_mv_class_tree[TREE_SIZE(MV_CLASSES)] = {
+  -MV_CLASS_0, 2,
+  -MV_CLASS_1, 4,
+  6, 8,
+  -MV_CLASS_2, -MV_CLASS_3,
+  10, 12,
+  -MV_CLASS_4, -MV_CLASS_5,
+  -MV_CLASS_6, 14,
+  16, 18,
+  -MV_CLASS_7, -MV_CLASS_8,
+  -MV_CLASS_9, -MV_CLASS_10,
+};
+/* clang-format on */
+
+const vpx_tree_index vp10_mv_class0_tree[TREE_SIZE(CLASS0_SIZE)] = {
+  -0, -1,
+};
+
+const vpx_tree_index vp10_mv_fp_tree[TREE_SIZE(MV_FP_SIZE)] = { -0, 2,  -1,
+                                                                4,  -2, -3 };
+
+static const nmv_context default_nmv_context = {
+#if CONFIG_REF_MV
+  { 1, 64, 96 },
+  128,
+#else
+  { 32, 64, 96 },
+#endif
+  { {
+        // Vertical component
+        128,                                                   // sign
+        { 224, 144, 192, 168, 192, 176, 192, 198, 198, 245 },  // class
+        { 216 },                                               // class0
+        { 136, 140, 148, 160, 176, 192, 224, 234, 234, 240 },  // bits
+        { { 128, 128, 64 }, { 96, 112, 64 } },                 // class0_fp
+        { 64, 96, 64 },                                        // fp
+        160,                                                   // class0_hp bit
+        128,                                                   // hp
+    },
+    {
+        // Horizontal component
+        128,                                                   // sign
+        { 216, 128, 176, 160, 176, 176, 192, 198, 198, 208 },  // class
+        { 208 },                                               // class0
+        { 136, 140, 148, 160, 176, 192, 224, 234, 234, 240 },  // bits
+        { { 128, 128, 64 }, { 96, 112, 64 } },                 // class0_fp
+        { 64, 96, 64 },                                        // fp
+        160,                                                   // class0_hp bit
+        128,                                                   // hp
+    } },
+};
+
+static const uint8_t log_in_base_2[] = {
+  0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+  4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+  9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10
+};
+
+#if CONFIG_GLOBAL_MOTION
+const vpx_tree_index
+    vp10_global_motion_types_tree[TREE_SIZE(GLOBAL_MOTION_TYPES)] = {
+      -GLOBAL_ZERO, 2, -GLOBAL_TRANSLATION, 4, -GLOBAL_ROTZOOM, -GLOBAL_AFFINE
+    };
+
+static const vpx_prob default_global_motion_types_prob[GLOBAL_MOTION_TYPES -
+                                                       1] = { 224, 128, 128 };
+#endif  // CONFIG_GLOBAL_MOTION
+
+static INLINE int mv_class_base(MV_CLASS_TYPE c) {
+  return c ? CLASS0_SIZE << (c + 2) : 0;
+}
+
+MV_CLASS_TYPE vp10_get_mv_class(int z, int *offset) {
+  const MV_CLASS_TYPE c = (z >= CLASS0_SIZE * 4096)
+                              ? MV_CLASS_10
+                              : (MV_CLASS_TYPE)log_in_base_2[z >> 3];
+  if (offset) *offset = z - mv_class_base(c);
+  return c;
+}
+
+// TODO(jingning): This idle function is intentionally left as is for
+// experimental purpose.
+int vp10_use_mv_hp(const MV *ref) {
+  (void)ref;
+  return 1;
+}
+
+static void inc_mv_component(int v, nmv_component_counts *comp_counts, int incr,
+                             int usehp) {
+  int s, z, c, o, d, e, f;
+  assert(v != 0); /* should not be zero */
+  s = v < 0;
+  comp_counts->sign[s] += incr;
+  z = (s ? -v : v) - 1; /* magnitude - 1 */
+
+  c = vp10_get_mv_class(z, &o);
+  comp_counts->classes[c] += incr;
+
+  d = (o >> 3);     /* int mv data */
+  f = (o >> 1) & 3; /* fractional pel mv data */
+  e = (o & 1);      /* high precision mv data */
+
+  if (c == MV_CLASS_0) {
+    comp_counts->class0[d] += incr;
+    comp_counts->class0_fp[d][f] += incr;
+    if (usehp) comp_counts->class0_hp[e] += incr;
+  } else {
+    int i;
+    int b = c + CLASS0_BITS - 1;  // number of bits
+    for (i = 0; i < b; ++i) comp_counts->bits[i][((d >> i) & 1)] += incr;
+    comp_counts->fp[f] += incr;
+    if (usehp) comp_counts->hp[e] += incr;
+  }
+}
+
+void vp10_inc_mv(const MV *mv, nmv_context_counts *counts, const int usehp) {
+  if (counts != NULL) {
+    const MV_JOINT_TYPE j = vp10_get_mv_joint(mv);
+
+#if CONFIG_REF_MV
+    ++counts->zero_rmv[j == MV_JOINT_ZERO];
+    if (j == MV_JOINT_ZERO) return;
+#endif
+    ++counts->joints[j];
+
+    if (mv_joint_vertical(j))
+      inc_mv_component(mv->row, &counts->comps[0], 1, usehp);
+
+    if (mv_joint_horizontal(j))
+      inc_mv_component(mv->col, &counts->comps[1], 1, usehp);
+  }
+}
+
+void vp10_adapt_mv_probs(VP10_COMMON *cm, int allow_hp) {
+  int i, j;
+#if CONFIG_REF_MV
+  int idx;
+  for (idx = 0; idx < NMV_CONTEXTS; ++idx) {
+    nmv_context *fc = &cm->fc->nmvc[idx];
+    const nmv_context *pre_fc =
+        &cm->frame_contexts[cm->frame_context_idx].nmvc[idx];
+    const nmv_context_counts *counts = &cm->counts.mv[idx];
+
+    vpx_tree_merge_probs(vp10_mv_joint_tree, pre_fc->joints, counts->joints,
+                         fc->joints);
+#if CONFIG_REF_MV
+    fc->zero_rmv = vp10_mode_mv_merge_probs(pre_fc->zero_rmv, counts->zero_rmv);
+#endif
+
+    for (i = 0; i < 2; ++i) {
+      nmv_component *comp = &fc->comps[i];
+      const nmv_component *pre_comp = &pre_fc->comps[i];
+      const nmv_component_counts *c = &counts->comps[i];
+
+      comp->sign = vp10_mode_mv_merge_probs(pre_comp->sign, c->sign);
+      vpx_tree_merge_probs(vp10_mv_class_tree, pre_comp->classes, c->classes,
+                           comp->classes);
+      vpx_tree_merge_probs(vp10_mv_class0_tree, pre_comp->class0, c->class0,
+                           comp->class0);
+
+      for (j = 0; j < MV_OFFSET_BITS; ++j)
+        comp->bits[j] = vp10_mode_mv_merge_probs(pre_comp->bits[j], c->bits[j]);
+
+      for (j = 0; j < CLASS0_SIZE; ++j)
+        vpx_tree_merge_probs(vp10_mv_fp_tree, pre_comp->class0_fp[j],
+                             c->class0_fp[j], comp->class0_fp[j]);
+
+      vpx_tree_merge_probs(vp10_mv_fp_tree, pre_comp->fp, c->fp, comp->fp);
+
+      if (allow_hp) {
+        comp->class0_hp =
+            vp10_mode_mv_merge_probs(pre_comp->class0_hp, c->class0_hp);
+        comp->hp = vp10_mode_mv_merge_probs(pre_comp->hp, c->hp);
+      }
+    }
+  }
+#else
+  nmv_context *fc = &cm->fc->nmvc;
+  const nmv_context *pre_fc = &cm->frame_contexts[cm->frame_context_idx].nmvc;
+  const nmv_context_counts *counts = &cm->counts.mv;
+
+  vpx_tree_merge_probs(vp10_mv_joint_tree, pre_fc->joints, counts->joints,
+                       fc->joints);
+
+  for (i = 0; i < 2; ++i) {
+    nmv_component *comp = &fc->comps[i];
+    const nmv_component *pre_comp = &pre_fc->comps[i];
+    const nmv_component_counts *c = &counts->comps[i];
+
+    comp->sign = vp10_mode_mv_merge_probs(pre_comp->sign, c->sign);
+    vpx_tree_merge_probs(vp10_mv_class_tree, pre_comp->classes, c->classes,
+                         comp->classes);
+    vpx_tree_merge_probs(vp10_mv_class0_tree, pre_comp->class0, c->class0,
+                         comp->class0);
+
+    for (j = 0; j < MV_OFFSET_BITS; ++j)
+      comp->bits[j] = vp10_mode_mv_merge_probs(pre_comp->bits[j], c->bits[j]);
+
+    for (j = 0; j < CLASS0_SIZE; ++j)
+      vpx_tree_merge_probs(vp10_mv_fp_tree, pre_comp->class0_fp[j],
+                           c->class0_fp[j], comp->class0_fp[j]);
+
+    vpx_tree_merge_probs(vp10_mv_fp_tree, pre_comp->fp, c->fp, comp->fp);
+
+    if (allow_hp) {
+      comp->class0_hp =
+          vp10_mode_mv_merge_probs(pre_comp->class0_hp, c->class0_hp);
+      comp->hp = vp10_mode_mv_merge_probs(pre_comp->hp, c->hp);
+    }
+  }
+#endif
+}
+
+void vp10_init_mv_probs(VP10_COMMON *cm) {
+#if CONFIG_REF_MV
+  int i;
+  for (i = 0; i < NMV_CONTEXTS; ++i) cm->fc->nmvc[i] = default_nmv_context;
+#else
+  cm->fc->nmvc = default_nmv_context;
+#endif
+#if CONFIG_GLOBAL_MOTION
+  vp10_copy(cm->fc->global_motion_types_prob, default_global_motion_types_prob);
+#endif  // CONFIG_GLOBAL_MOTION
+}