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-rw-r--r--media/libvpx/vp9/common/vp9_entropymv.c222
1 files changed, 222 insertions, 0 deletions
diff --git a/media/libvpx/vp9/common/vp9_entropymv.c b/media/libvpx/vp9/common/vp9_entropymv.c
new file mode 100644
index 000000000..2477e6ef3
--- /dev/null
+++ b/media/libvpx/vp9/common/vp9_entropymv.c
@@ -0,0 +1,222 @@
+/*
+ * 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 "vp9/common/vp9_onyxc_int.h"
+#include "vp9/common/vp9_entropymv.h"
+
+// Integer pel reference mv threshold for use of high-precision 1/8 mv
+#define COMPANDED_MVREF_THRESH 8
+
+const vp9_tree_index vp9_mv_joint_tree[TREE_SIZE(MV_JOINTS)] = {
+ -MV_JOINT_ZERO, 2,
+ -MV_JOINT_HNZVZ, 4,
+ -MV_JOINT_HZVNZ, -MV_JOINT_HNZVNZ
+};
+
+const vp9_tree_index vp9_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,
+};
+
+const vp9_tree_index vp9_mv_class0_tree[TREE_SIZE(CLASS0_SIZE)] = {
+ -0, -1,
+};
+
+const vp9_tree_index vp9_mv_fp_tree[TREE_SIZE(MV_FP_SIZE)] = {
+ -0, 2,
+ -1, 4,
+ -2, -3
+};
+
+static const nmv_context default_nmv_context = {
+ {32, 64, 96},
+ {
+ { // 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
+};
+
+static INLINE int mv_class_base(MV_CLASS_TYPE c) {
+ return c ? CLASS0_SIZE << (c + 2) : 0;
+}
+
+MV_CLASS_TYPE vp9_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;
+}
+
+int vp9_use_mv_hp(const MV *ref) {
+ return (abs(ref->row) >> 3) < COMPANDED_MVREF_THRESH &&
+ (abs(ref->col) >> 3) < COMPANDED_MVREF_THRESH;
+}
+
+int vp9_get_mv_mag(MV_CLASS_TYPE c, int offset) {
+ return mv_class_base(c) + offset;
+}
+
+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 = vp9_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;
+ comp_counts->class0_hp[e] += usehp * 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;
+ comp_counts->hp[e] += usehp * incr;
+ }
+}
+
+void vp9_inc_mv(const MV *mv, nmv_context_counts *counts) {
+ if (counts != NULL) {
+ const MV_JOINT_TYPE j = vp9_get_mv_joint(mv);
+ ++counts->joints[j];
+
+ if (mv_joint_vertical(j)) {
+ inc_mv_component(mv->row, &counts->comps[0], 1, 1);
+ }
+
+ if (mv_joint_horizontal(j)) {
+ inc_mv_component(mv->col, &counts->comps[1], 1, 1);
+ }
+ }
+}
+
+void vp9_adapt_mv_probs(VP9_COMMON *cm, int allow_hp) {
+ int i, j;
+
+ 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;
+
+ vp9_tree_merge_probs(vp9_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 = mode_mv_merge_probs(pre_comp->sign, c->sign);
+ vp9_tree_merge_probs(vp9_mv_class_tree, pre_comp->classes, c->classes,
+ comp->classes);
+ vp9_tree_merge_probs(vp9_mv_class0_tree, pre_comp->class0, c->class0,
+ comp->class0);
+
+ for (j = 0; j < MV_OFFSET_BITS; ++j)
+ comp->bits[j] = mode_mv_merge_probs(pre_comp->bits[j], c->bits[j]);
+
+ for (j = 0; j < CLASS0_SIZE; ++j)
+ vp9_tree_merge_probs(vp9_mv_fp_tree, pre_comp->class0_fp[j],
+ c->class0_fp[j], comp->class0_fp[j]);
+
+ vp9_tree_merge_probs(vp9_mv_fp_tree, pre_comp->fp, c->fp, comp->fp);
+
+ if (allow_hp) {
+ comp->class0_hp = mode_mv_merge_probs(pre_comp->class0_hp, c->class0_hp);
+ comp->hp = mode_mv_merge_probs(pre_comp->hp, c->hp);
+ }
+ }
+}
+
+void vp9_init_mv_probs(VP9_COMMON *cm) {
+ cm->fc->nmvc = default_nmv_context;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 06:09:50 +0000