189 lines
5.4 KiB
C
189 lines
5.4 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 "entropy.h"
|
|
#include "blockd.h"
|
|
#include "onyxc_int.h"
|
|
#include "vpx_mem/vpx_mem.h"
|
|
|
|
#include "coefupdateprobs.h"
|
|
|
|
DECLARE_ALIGNED(16, const unsigned char, vp8_norm[256]) =
|
|
{
|
|
0, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
|
|
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
|
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
|
};
|
|
|
|
DECLARE_ALIGNED(16, const unsigned char, vp8_coef_bands[16]) =
|
|
{ 0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7};
|
|
|
|
DECLARE_ALIGNED(16, const unsigned char,
|
|
vp8_prev_token_class[MAX_ENTROPY_TOKENS]) =
|
|
{ 0, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0};
|
|
|
|
DECLARE_ALIGNED(16, const int, vp8_default_zig_zag1d[16]) =
|
|
{
|
|
0, 1, 4, 8,
|
|
5, 2, 3, 6,
|
|
9, 12, 13, 10,
|
|
7, 11, 14, 15,
|
|
};
|
|
|
|
DECLARE_ALIGNED(16, const short, vp8_default_inv_zig_zag[16]) =
|
|
{
|
|
1, 2, 6, 7,
|
|
3, 5, 8, 13,
|
|
4, 9, 12, 14,
|
|
10, 11, 15, 16
|
|
};
|
|
|
|
/* vp8_default_zig_zag_mask generated with:
|
|
|
|
void vp8_init_scan_order_mask()
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
vp8_default_zig_zag_mask[vp8_default_zig_zag1d[i]] = 1 << i;
|
|
}
|
|
|
|
}
|
|
*/
|
|
DECLARE_ALIGNED(16, const short, vp8_default_zig_zag_mask[16]) =
|
|
{
|
|
1, 2, 32, 64,
|
|
4, 16, 128, 4096,
|
|
8, 256, 2048, 8192,
|
|
512, 1024, 16384, -32768
|
|
};
|
|
|
|
const int vp8_mb_feature_data_bits[MB_LVL_MAX] = {7, 6};
|
|
|
|
/* Array indices are identical to previously-existing CONTEXT_NODE indices */
|
|
|
|
const vp8_tree_index vp8_coef_tree[ 22] = /* corresponding _CONTEXT_NODEs */
|
|
{
|
|
-DCT_EOB_TOKEN, 2, /* 0 = EOB */
|
|
-ZERO_TOKEN, 4, /* 1 = ZERO */
|
|
-ONE_TOKEN, 6, /* 2 = ONE */
|
|
8, 12, /* 3 = LOW_VAL */
|
|
-TWO_TOKEN, 10, /* 4 = TWO */
|
|
-THREE_TOKEN, -FOUR_TOKEN, /* 5 = THREE */
|
|
14, 16, /* 6 = HIGH_LOW */
|
|
-DCT_VAL_CATEGORY1, -DCT_VAL_CATEGORY2, /* 7 = CAT_ONE */
|
|
18, 20, /* 8 = CAT_THREEFOUR */
|
|
-DCT_VAL_CATEGORY3, -DCT_VAL_CATEGORY4, /* 9 = CAT_THREE */
|
|
-DCT_VAL_CATEGORY5, -DCT_VAL_CATEGORY6 /* 10 = CAT_FIVE */
|
|
};
|
|
|
|
/* vp8_coef_encodings generated with:
|
|
vp8_tokens_from_tree(vp8_coef_encodings, vp8_coef_tree);
|
|
*/
|
|
vp8_token vp8_coef_encodings[MAX_ENTROPY_TOKENS] =
|
|
{
|
|
{2, 2},
|
|
{6, 3},
|
|
{28, 5},
|
|
{58, 6},
|
|
{59, 6},
|
|
{60, 6},
|
|
{61, 6},
|
|
{124, 7},
|
|
{125, 7},
|
|
{126, 7},
|
|
{127, 7},
|
|
{0, 1}
|
|
};
|
|
|
|
/* Trees for extra bits. Probabilities are constant and
|
|
do not depend on previously encoded bits */
|
|
|
|
static const vp8_prob Pcat1[] = { 159};
|
|
static const vp8_prob Pcat2[] = { 165, 145};
|
|
static const vp8_prob Pcat3[] = { 173, 148, 140};
|
|
static const vp8_prob Pcat4[] = { 176, 155, 140, 135};
|
|
static const vp8_prob Pcat5[] = { 180, 157, 141, 134, 130};
|
|
static const vp8_prob Pcat6[] =
|
|
{ 254, 254, 243, 230, 196, 177, 153, 140, 133, 130, 129};
|
|
|
|
|
|
/* tree index tables generated with:
|
|
|
|
void init_bit_tree(vp8_tree_index *p, int n)
|
|
{
|
|
int i = 0;
|
|
|
|
while (++i < n)
|
|
{
|
|
p[0] = p[1] = i << 1;
|
|
p += 2;
|
|
}
|
|
|
|
p[0] = p[1] = 0;
|
|
}
|
|
|
|
void init_bit_trees()
|
|
{
|
|
init_bit_tree(cat1, 1);
|
|
init_bit_tree(cat2, 2);
|
|
init_bit_tree(cat3, 3);
|
|
init_bit_tree(cat4, 4);
|
|
init_bit_tree(cat5, 5);
|
|
init_bit_tree(cat6, 11);
|
|
}
|
|
*/
|
|
|
|
static const vp8_tree_index cat1[2] = { 0, 0 };
|
|
static const vp8_tree_index cat2[4] = { 2, 2, 0, 0 };
|
|
static const vp8_tree_index cat3[6] = { 2, 2, 4, 4, 0, 0 };
|
|
static const vp8_tree_index cat4[8] = { 2, 2, 4, 4, 6, 6, 0, 0 };
|
|
static const vp8_tree_index cat5[10] = { 2, 2, 4, 4, 6, 6, 8, 8, 0, 0 };
|
|
static const vp8_tree_index cat6[22] = { 2, 2, 4, 4, 6, 6, 8, 8, 10, 10, 12, 12,
|
|
14, 14, 16, 16, 18, 18, 20, 20, 0, 0 };
|
|
|
|
const vp8_extra_bit_struct vp8_extra_bits[12] =
|
|
{
|
|
{ 0, 0, 0, 0},
|
|
{ 0, 0, 0, 1},
|
|
{ 0, 0, 0, 2},
|
|
{ 0, 0, 0, 3},
|
|
{ 0, 0, 0, 4},
|
|
{ cat1, Pcat1, 1, 5},
|
|
{ cat2, Pcat2, 2, 7},
|
|
{ cat3, Pcat3, 3, 11},
|
|
{ cat4, Pcat4, 4, 19},
|
|
{ cat5, Pcat5, 5, 35},
|
|
{ cat6, Pcat6, 11, 67},
|
|
{ 0, 0, 0, 0}
|
|
};
|
|
|
|
#include "default_coef_probs.h"
|
|
|
|
void vp8_default_coef_probs(VP8_COMMON *pc)
|
|
{
|
|
memcpy(pc->fc.coef_probs, default_coef_probs, sizeof(default_coef_probs));
|
|
}
|
|
|