2bbde25003
This commit tries to do UV intra mode coding adaptive to Y intra mode. Entropy context is defined as conditional PDF of uv intra mode given the Y mode. All constants are normalized with 256 to be fit in 8 bits. This provides further coding efficiency beyond the quantizer adaptive y intra mode coding. Consistent gains were observed on all clips and all bit rates for HD all key encoding tests. To test, configure with --enable-experimental --enable-uvintra Change-Id: I2d78d73f143127f063e19bd0bac3b68c418d756a
379 lines
9.3 KiB
C
379 lines
9.3 KiB
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 "entropymode.h"
|
|
#include "entropy.h"
|
|
#include "vpx_mem/vpx_mem.h"
|
|
#if CONFIG_I8X8
|
|
|
|
#if CONFIG_QIMODE
|
|
const unsigned int kf_y_mode_cts[8][VP8_YMODES] =
|
|
{
|
|
{17, 6, 5, 2, 22, 203},
|
|
{27, 13, 13, 6, 27, 170},
|
|
{35, 17, 18, 9, 26, 152},
|
|
{45, 22, 24, 12, 27, 126},
|
|
{58, 26, 29, 13, 26, 104},
|
|
{73, 33, 36, 17, 20, 78},
|
|
{88, 38, 39, 19, 16, 57},
|
|
{99, 42, 43, 21, 12, 39},
|
|
};
|
|
#else
|
|
static const unsigned int kf_y_mode_cts[VP8_YMODES] = { 49, 22, 23, 11, 23, 128};
|
|
#endif
|
|
static const unsigned int y_mode_cts [VP8_YMODES] = { 8080, 1908, 1582, 1007, 0, 5874};
|
|
#else
|
|
static const unsigned int kf_y_mode_cts[VP8_YMODES] = { 1607, 915, 812, 811, 5455};
|
|
static const unsigned int y_mode_cts [VP8_YMODES] = { 8080, 1908, 1582, 1007, 5874};
|
|
#endif
|
|
|
|
#if CONFIG_UVINTRA
|
|
static const unsigned int uv_mode_cts [VP8_UV_MODES] ={ 162, 41, 41, 12};
|
|
/*
|
|
static const unsigned int uv_mode_cts [VP8_YMODES] [VP8_UV_MODES] ={
|
|
{ 180, 35, 35, 6},
|
|
{ 152, 76, 20, 8},
|
|
{ 152, 20, 76, 8},
|
|
{ 172, 36, 36, 12},
|
|
{ 162, 41, 41, 12},
|
|
{ 162, 41, 41, 12},
|
|
};
|
|
*/
|
|
#else
|
|
static const unsigned int uv_mode_cts [VP8_UV_MODES] = { 59483, 13605, 16492, 4230};
|
|
#endif
|
|
|
|
|
|
#if CONFIG_I8X8
|
|
static const unsigned int i8x8_mode_cts [VP8_UV_MODES] = {93, 69, 81, 13};
|
|
#endif
|
|
|
|
|
|
#if CONFIG_UVINTRA
|
|
static const unsigned int kf_uv_mode_cts [VP8_YMODES] [VP8_UV_MODES] ={
|
|
{ 180, 34, 34, 8},
|
|
{ 132, 74, 40, 10},
|
|
{ 132, 40, 74, 10},
|
|
{ 152, 46, 40, 18},
|
|
{ 142, 51, 45, 18},
|
|
{ 142, 51, 45, 18},
|
|
};
|
|
#else
|
|
static const unsigned int kf_uv_mode_cts[VP8_UV_MODES] = { 5319, 1904, 1703, 674};
|
|
#endif
|
|
|
|
static const unsigned int bmode_cts[VP8_BINTRAMODES] =
|
|
{
|
|
43891, 17694, 10036, 3920, 3363, 2546, 5119, 3221, 2471, 1723
|
|
};
|
|
|
|
typedef enum
|
|
{
|
|
SUBMVREF_NORMAL,
|
|
SUBMVREF_LEFT_ZED,
|
|
SUBMVREF_ABOVE_ZED,
|
|
SUBMVREF_LEFT_ABOVE_SAME,
|
|
SUBMVREF_LEFT_ABOVE_ZED
|
|
} sumvfref_t;
|
|
|
|
int vp8_mv_cont(const int_mv *l, const int_mv *a)
|
|
{
|
|
int lez = (l->as_int == 0);
|
|
int aez = (a->as_int == 0);
|
|
int lea = (l->as_int == a->as_int);
|
|
|
|
if (lea && lez)
|
|
return SUBMVREF_LEFT_ABOVE_ZED;
|
|
|
|
if (lea)
|
|
return SUBMVREF_LEFT_ABOVE_SAME;
|
|
|
|
if (aez)
|
|
return SUBMVREF_ABOVE_ZED;
|
|
|
|
if (lez)
|
|
return SUBMVREF_LEFT_ZED;
|
|
|
|
return SUBMVREF_NORMAL;
|
|
}
|
|
|
|
static const vp8_prob sub_mv_ref_prob [VP8_SUBMVREFS-1] = { 180, 162, 25};
|
|
|
|
const vp8_prob vp8_sub_mv_ref_prob2 [SUBMVREF_COUNT][VP8_SUBMVREFS-1] =
|
|
{
|
|
{ 147, 136, 18 },
|
|
{ 106, 145, 1 },
|
|
{ 179, 121, 1 },
|
|
{ 223, 1 , 34 },
|
|
{ 208, 1 , 1 }
|
|
};
|
|
|
|
|
|
|
|
vp8_mbsplit vp8_mbsplits [VP8_NUMMBSPLITS] =
|
|
{
|
|
{
|
|
0, 0, 0, 0,
|
|
0, 0, 0, 0,
|
|
1, 1, 1, 1,
|
|
1, 1, 1, 1,
|
|
},
|
|
{
|
|
0, 0, 1, 1,
|
|
0, 0, 1, 1,
|
|
0, 0, 1, 1,
|
|
0, 0, 1, 1,
|
|
},
|
|
{
|
|
0, 0, 1, 1,
|
|
0, 0, 1, 1,
|
|
2, 2, 3, 3,
|
|
2, 2, 3, 3,
|
|
},
|
|
{
|
|
0, 1, 2, 3,
|
|
4, 5, 6, 7,
|
|
8, 9, 10, 11,
|
|
12, 13, 14, 15,
|
|
},
|
|
};
|
|
|
|
const int vp8_mbsplit_count [VP8_NUMMBSPLITS] = { 2, 2, 4, 16};
|
|
|
|
const vp8_prob vp8_mbsplit_probs [VP8_NUMMBSPLITS-1] = { 110, 111, 150};
|
|
|
|
|
|
/* Array indices are identical to previously-existing INTRAMODECONTEXTNODES. */
|
|
|
|
const vp8_tree_index vp8_bmode_tree[18] = /* INTRAMODECONTEXTNODE value */
|
|
{
|
|
-B_DC_PRED, 2, /* 0 = DC_NODE */
|
|
-B_TM_PRED, 4, /* 1 = TM_NODE */
|
|
-B_VE_PRED, 6, /* 2 = VE_NODE */
|
|
8, 12, /* 3 = COM_NODE */
|
|
-B_HE_PRED, 10, /* 4 = HE_NODE */
|
|
-B_RD_PRED, -B_VR_PRED, /* 5 = RD_NODE */
|
|
-B_LD_PRED, 14, /* 6 = LD_NODE */
|
|
-B_VL_PRED, 16, /* 7 = VL_NODE */
|
|
-B_HD_PRED, -B_HU_PRED /* 8 = HD_NODE */
|
|
};
|
|
|
|
/* Again, these trees use the same probability indices as their
|
|
explicitly-programmed predecessors. */
|
|
const vp8_tree_index vp8_ymode_tree[8] =
|
|
{
|
|
-DC_PRED, 2,
|
|
4, 6,
|
|
-V_PRED, -H_PRED,
|
|
-TM_PRED, -B_PRED
|
|
};
|
|
|
|
#if CONFIG_I8X8
|
|
const vp8_tree_index vp8_kf_ymode_tree[10] =
|
|
{
|
|
-B_PRED, 2,
|
|
4, 6,
|
|
-DC_PRED, -V_PRED,
|
|
-H_PRED, 8,
|
|
-TM_PRED, -I8X8_PRED
|
|
};
|
|
|
|
const vp8_tree_index vp8_i8x8_mode_tree[6] =
|
|
{
|
|
-DC_PRED, 2,
|
|
-V_PRED, 4,
|
|
-H_PRED, -TM_PRED
|
|
};
|
|
#else
|
|
|
|
const vp8_tree_index vp8_kf_ymode_tree[8] =
|
|
{
|
|
-B_PRED, 2,
|
|
4, 6,
|
|
-DC_PRED, -V_PRED,
|
|
-H_PRED, -TM_PRED
|
|
};
|
|
#endif
|
|
const vp8_tree_index vp8_uv_mode_tree[6] =
|
|
{
|
|
-DC_PRED, 2,
|
|
-V_PRED, 4,
|
|
-H_PRED, -TM_PRED
|
|
};
|
|
|
|
const vp8_tree_index vp8_mbsplit_tree[6] =
|
|
{
|
|
-3, 2,
|
|
-2, 4,
|
|
-0, -1
|
|
};
|
|
|
|
const vp8_tree_index vp8_mv_ref_tree[8] =
|
|
{
|
|
-ZEROMV, 2,
|
|
-NEARESTMV, 4,
|
|
-NEARMV, 6,
|
|
-NEWMV, -SPLITMV
|
|
};
|
|
|
|
const vp8_tree_index vp8_sub_mv_ref_tree[6] =
|
|
{
|
|
-LEFT4X4, 2,
|
|
-ABOVE4X4, 4,
|
|
-ZERO4X4, -NEW4X4
|
|
};
|
|
|
|
|
|
struct vp8_token_struct vp8_bmode_encodings [VP8_BINTRAMODES];
|
|
struct vp8_token_struct vp8_ymode_encodings [VP8_YMODES];
|
|
struct vp8_token_struct vp8_kf_ymode_encodings [VP8_YMODES];
|
|
struct vp8_token_struct vp8_uv_mode_encodings [VP8_UV_MODES];
|
|
#if CONFIG_I8X8
|
|
struct vp8_token_struct vp8_i8x8_mode_encodings [VP8_UV_MODES];
|
|
#endif
|
|
struct vp8_token_struct vp8_mbsplit_encodings [VP8_NUMMBSPLITS];
|
|
|
|
struct vp8_token_struct vp8_mv_ref_encoding_array [VP8_MVREFS];
|
|
struct vp8_token_struct vp8_sub_mv_ref_encoding_array [VP8_SUBMVREFS];
|
|
|
|
|
|
const vp8_tree_index vp8_small_mvtree [14] =
|
|
{
|
|
2, 8,
|
|
4, 6,
|
|
-0, -1,
|
|
-2, -3,
|
|
10, 12,
|
|
-4, -5,
|
|
-6, -7
|
|
};
|
|
|
|
struct vp8_token_struct vp8_small_mvencodings [8];
|
|
|
|
void vp8_init_mbmode_probs(VP8_COMMON *x)
|
|
{
|
|
unsigned int bct [VP8_YMODES] [2]; /* num Ymodes > num UV modes */
|
|
|
|
vp8_tree_probs_from_distribution(
|
|
VP8_YMODES, vp8_ymode_encodings, vp8_ymode_tree,
|
|
x->fc.ymode_prob, bct, y_mode_cts,
|
|
256, 1
|
|
);
|
|
#if CONFIG_QIMODE
|
|
{
|
|
int i;
|
|
for (i=0;i<8;i++)
|
|
vp8_tree_probs_from_distribution(
|
|
VP8_YMODES, vp8_kf_ymode_encodings, vp8_kf_ymode_tree,
|
|
x->kf_ymode_prob[i], bct, kf_y_mode_cts[i],
|
|
256, 1
|
|
);
|
|
}
|
|
#else
|
|
vp8_tree_probs_from_distribution(
|
|
VP8_YMODES, vp8_kf_ymode_encodings, vp8_kf_ymode_tree,
|
|
x->kf_ymode_prob, bct, kf_y_mode_cts,
|
|
256, 1
|
|
);
|
|
#endif
|
|
vp8_tree_probs_from_distribution(
|
|
VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree,
|
|
x->fc.uv_mode_prob, bct, uv_mode_cts,
|
|
256, 1
|
|
);
|
|
#if CONFIG_UVINTRA
|
|
{
|
|
int i;
|
|
for (i=0;i<VP8_YMODES;i++)
|
|
vp8_tree_probs_from_distribution(
|
|
VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree,
|
|
x->kf_uv_mode_prob[i], bct, kf_uv_mode_cts[i],
|
|
256, 1);
|
|
}
|
|
#else
|
|
vp8_tree_probs_from_distribution(
|
|
VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree,
|
|
x->kf_uv_mode_prob, bct, kf_uv_mode_cts,
|
|
256, 1
|
|
);
|
|
#endif
|
|
#if CONFIG_I8X8
|
|
vp8_tree_probs_from_distribution(
|
|
VP8_UV_MODES, vp8_i8x8_mode_encodings, vp8_i8x8_mode_tree,
|
|
x->i8x8_mode_prob, bct, i8x8_mode_cts,
|
|
256, 1
|
|
);
|
|
#endif
|
|
vpx_memcpy(x->fc.sub_mv_ref_prob, sub_mv_ref_prob, sizeof(sub_mv_ref_prob));
|
|
|
|
}
|
|
|
|
|
|
static void intra_bmode_probs_from_distribution(
|
|
vp8_prob p [VP8_BINTRAMODES-1],
|
|
unsigned int branch_ct [VP8_BINTRAMODES-1] [2],
|
|
const unsigned int events [VP8_BINTRAMODES]
|
|
)
|
|
{
|
|
vp8_tree_probs_from_distribution(
|
|
VP8_BINTRAMODES, vp8_bmode_encodings, vp8_bmode_tree,
|
|
p, branch_ct, events,
|
|
256, 1
|
|
);
|
|
}
|
|
|
|
void vp8_default_bmode_probs(vp8_prob p [VP8_BINTRAMODES-1])
|
|
{
|
|
unsigned int branch_ct [VP8_BINTRAMODES-1] [2];
|
|
intra_bmode_probs_from_distribution(p, branch_ct, bmode_cts);
|
|
}
|
|
|
|
void vp8_kf_default_bmode_probs(vp8_prob p [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES-1])
|
|
{
|
|
unsigned int branch_ct [VP8_BINTRAMODES-1] [2];
|
|
|
|
int i = 0;
|
|
|
|
do
|
|
{
|
|
int j = 0;
|
|
|
|
do
|
|
{
|
|
intra_bmode_probs_from_distribution(
|
|
p[i][j], branch_ct, vp8_kf_default_bmode_counts[i][j]);
|
|
|
|
}
|
|
while (++j < VP8_BINTRAMODES);
|
|
}
|
|
while (++i < VP8_BINTRAMODES);
|
|
}
|
|
|
|
|
|
void vp8_entropy_mode_init()
|
|
{
|
|
vp8_tokens_from_tree(vp8_bmode_encodings, vp8_bmode_tree);
|
|
vp8_tokens_from_tree(vp8_ymode_encodings, vp8_ymode_tree);
|
|
vp8_tokens_from_tree(vp8_kf_ymode_encodings, vp8_kf_ymode_tree);
|
|
vp8_tokens_from_tree(vp8_uv_mode_encodings, vp8_uv_mode_tree);
|
|
#if CONFIG_I8X8
|
|
vp8_tokens_from_tree(vp8_i8x8_mode_encodings, vp8_i8x8_mode_tree);
|
|
#endif
|
|
vp8_tokens_from_tree(vp8_mbsplit_encodings, vp8_mbsplit_tree);
|
|
|
|
vp8_tokens_from_tree_offset(vp8_mv_ref_encoding_array,
|
|
vp8_mv_ref_tree, NEARESTMV);
|
|
vp8_tokens_from_tree_offset(vp8_sub_mv_ref_encoding_array,
|
|
vp8_sub_mv_ref_tree, LEFT4X4);
|
|
|
|
vp8_tokens_from_tree(vp8_small_mvencodings, vp8_small_mvtree);
|
|
}
|