-
Paul Wilkins authored
This commit merges those parts of the CONFIG_NEW_MVREF that specifically relate to choosing a better set of candidate MV references into the NEWBESTREFMV experiment. CONFIG_NEW_MVREF will then be used for changes relating to the explicit coding of a cost optimized MV reference in the bitstream as part of MV coding. Change-Id: Ied982c0ad72093eab29e38b8cd74d5c3d7458b10
778ec421
/* * 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 "vp8/common/header.h"#include "encodemv.h"#include "vp8/common/entropymode.h"#include "vp8/common/findnearmv.h"#include "mcomp.h"#include "vp8/common/systemdependent.h"#include <assert.h>#include <stdio.h>#include <limits.h>#include "vp8/common/pragmas.h"#include "vpx/vpx_encoder.h"#include "vpx_mem/vpx_mem.h"#include "bitstream.h"#include "segmentation.h"#include "vp8/common/seg_common.h"#include "vp8/common/pred_common.h"#include "vp8/common/entropy.h"#include "vp8/encoder/encodemv.h"#if CONFIG_NEWBESTREFMV#include "vp8/common/mvref_common.h"#endif#if defined(SECTIONBITS_OUTPUT)unsigned __int64 Sectionbits[500];#endif//int final_packing = 0;#ifdef ENTROPY_STATSint intra_mode_stats [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES];unsigned int tree_update_hist [BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES][2];unsigned int tree_update_hist_8x8 [BLOCK_TYPES_8X8] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES] [2];#if CONFIG_TX16X16 || CONFIG_HYBRIDTRANSFORM16X16unsigned int tree_update_hist_16x16 [BLOCK_TYPES_16X16] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES] [2];#endifextern unsigned int active_section;#endif#ifdef MODE_STATSint count_mb_seg[4] = { 0, 0, 0, 0 };#endif#define vp8_cost_upd ((int)(vp8_cost_one(upd) - vp8_cost_zero(upd)) >> 8)#define vp8_cost_upd256 ((int)(vp8_cost_one(upd) - vp8_cost_zero(upd)))#define SEARCH_NEWPstatic int update_bits[255];7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
static void compute_update_table() {
int i;
for (i = 0; i < 255; i++)
update_bits[i] = vp8_count_term_subexp(i, SUBEXP_PARAM, 255);
}
static int split_index(int i, int n, int modulus) {
int max1 = (n - 1 - modulus / 2) / modulus + 1;
if (i % modulus == modulus / 2) i = i / modulus;
else i = max1 + i - (i + modulus - modulus / 2) / modulus;
return i;
}
static int remap_prob(int v, int m) {
const int n = 256;
const int modulus = MODULUS_PARAM;
int i;
if ((m << 1) <= n)
i = recenter_nonneg(v, m) - 1;
else
i = recenter_nonneg(n - 1 - v, n - 1 - m) - 1;
i = split_index(i, n - 1, modulus);
return i;
}
static void write_prob_diff_update(vp8_writer *const w,
vp8_prob newp, vp8_prob oldp) {
int delp = remap_prob(newp, oldp);
vp8_encode_term_subexp(w, delp, SUBEXP_PARAM, 255);
}
static int prob_diff_update_cost(vp8_prob newp, vp8_prob oldp) {
int delp = remap_prob(newp, oldp);
return update_bits[delp] * 256;
}
#if CONFIG_NEW_MVREF
// Estimate the cost of each coding the vector using each reference candidate
unsigned int pick_best_mv_ref( MACROBLOCK *x,
int_mv target_mv,
int_mv * mv_ref_list,
int_mv * best_ref ) {
int i;
int best_index = 0;
int cost, cost2;
int index_cost[MAX_MV_REFS];
MACROBLOCKD *xd = &x->e_mbd;
/*unsigned int distance, distance2;
distance = mv_distance(&target_mv, &mv_ref_list[0]);
for (i = 1; i < MAX_MV_REFS; ++i ) {
distance2 =
mv_distance(&target_mv, &mv_ref_list[i]);
if (distance2 < distance) {
distance = distance2;
best_index = i;
}
}*/
// For now estimate the cost of selecting a given ref index
// as index * 1 bits (but here 1 bit is scaled to 256)
for (i = 0; i < MAX_MV_REFS; ++i ) {
index_cost[i] = i << 8;
}
index_cost[0] = vp8_cost_zero(205);
141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210
index_cost[1] = vp8_cost_zero(40);
index_cost[2] = vp8_cost_zero(8);
index_cost[3] = vp8_cost_zero(2);
cost = index_cost[0] +
vp8_mv_bit_cost(&target_mv,
&mv_ref_list[0],
XMVCOST, 96,
xd->allow_high_precision_mv);
//for (i = 1; i < MAX_MV_REFS; ++i ) {
for (i = 1; i < 4; ++i ) {
cost2 = index_cost[i] +
vp8_mv_bit_cost(&target_mv,
&mv_ref_list[i],
XMVCOST, 96,
xd->allow_high_precision_mv);
if (cost2 < cost) {
cost = cost2;
best_index = i;
}
}
(*best_ref).as_int = mv_ref_list[best_index].as_int;
return best_index;
}
#endif
static void update_mode(
vp8_writer *const w,
int n,
vp8_token tok [/* n */],
vp8_tree tree,
vp8_prob Pnew [/* n-1 */],
vp8_prob Pcur [/* n-1 */],
unsigned int bct [/* n-1 */] [2],
const unsigned int num_events[/* n */]
) {
unsigned int new_b = 0, old_b = 0;
int i = 0;
vp8_tree_probs_from_distribution(
n--, tok, tree,
Pnew, bct, num_events,
256, 1
);
do {
new_b += vp8_cost_branch(bct[i], Pnew[i]);
old_b += vp8_cost_branch(bct[i], Pcur[i]);
} while (++i < n);
if (new_b + (n << 8) < old_b) {
int i = 0;
vp8_write_bit(w, 1);
do {
const vp8_prob p = Pnew[i];
vp8_write_literal(w, Pcur[i] = p ? p : 1, 8);
} while (++i < n);
} else
vp8_write_bit(w, 0);
}
static void update_mbintra_mode_probs(VP8_COMP *cpi) {
211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280
VP8_COMMON *const cm = & cpi->common;
vp8_writer *const w = & cpi->bc;
{
vp8_prob Pnew [VP8_YMODES - 1];
unsigned int bct [VP8_YMODES - 1] [2];
update_mode(
w, VP8_YMODES, vp8_ymode_encodings, vp8_ymode_tree,
Pnew, cm->fc.ymode_prob, bct, (unsigned int *)cpi->ymode_count
);
}
}
void update_skip_probs(VP8_COMP *cpi) {
VP8_COMMON *const pc = & cpi->common;
int prob_skip_false[3] = {0, 0, 0};
int k;
for (k = 0; k < MBSKIP_CONTEXTS; ++k) {
if ((cpi->skip_false_count[k] + cpi->skip_true_count[k])) {
prob_skip_false[k] =
cpi->skip_false_count[k] * 256 /
(cpi->skip_false_count[k] + cpi->skip_true_count[k]);
if (prob_skip_false[k] <= 1)
prob_skip_false[k] = 1;
if (prob_skip_false[k] > 255)
prob_skip_false[k] = 255;
} else
prob_skip_false[k] = 128;
pc->mbskip_pred_probs[k] = prob_skip_false[k];
}
}
#if CONFIG_SWITCHABLE_INTERP
void update_switchable_interp_probs(VP8_COMP *cpi) {
VP8_COMMON *const pc = & cpi->common;
vp8_writer *const w = & cpi->bc;
unsigned int branch_ct[32][2];
int i, j;
for (j = 0; j <= VP8_SWITCHABLE_FILTERS; ++j) {
//for (j = 0; j <= 0; ++j) {
/*
if (!cpi->dummy_packing)
#if VP8_SWITCHABLE_FILTERS == 3
printf("HELLO %d %d %d\n", cpi->switchable_interp_count[j][0],
cpi->switchable_interp_count[j][1], cpi->switchable_interp_count[j][2]);
#else
printf("HELLO %d %d\n", cpi->switchable_interp_count[j][0],
cpi->switchable_interp_count[j][1]);
#endif
*/
vp8_tree_probs_from_distribution(
VP8_SWITCHABLE_FILTERS,
vp8_switchable_interp_encodings, vp8_switchable_interp_tree,
pc->fc.switchable_interp_prob[j], branch_ct, cpi->switchable_interp_count[j],
256, 1
);
for (i = 0; i < VP8_SWITCHABLE_FILTERS - 1; ++i) {
if (pc->fc.switchable_interp_prob[j][i] < 1)
pc->fc.switchable_interp_prob[j][i] = 1;
vp8_write_literal(w, pc->fc.switchable_interp_prob[j][i], 8);
/*
if (!cpi->dummy_packing)
#if VP8_SWITCHABLE_FILTERS == 3
printf("Probs %d %d [%d]\n",
281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350
pc->fc.switchable_interp_prob[j][0],
pc->fc.switchable_interp_prob[j][1], pc->frame_type);
#else
printf("Probs %d [%d]\n", pc->fc.switchable_interp_prob[j][0],
pc->frame_type);
#endif
*/
}
}
/*
if (!cpi->dummy_packing)
#if VP8_SWITCHABLE_FILTERS == 3
printf("Probs %d %d [%d]\n",
pc->fc.switchable_interp_prob[0], pc->fc.switchable_interp_prob[1], pc->frame_type);
#else
printf("Probs %d [%d]\n", pc->fc.switchable_interp_prob[0], pc->frame_type);
#endif
*/
}
#endif
// This function updates the reference frame prediction stats
static void update_refpred_stats(VP8_COMP *cpi) {
VP8_COMMON *const cm = & cpi->common;
int i;
int tot_count;
vp8_prob new_pred_probs[PREDICTION_PROBS];
int old_cost, new_cost;
// Set the prediction probability structures to defaults
if (cm->frame_type == KEY_FRAME) {
// Set the prediction probabilities to defaults
cm->ref_pred_probs[0] = 120;
cm->ref_pred_probs[1] = 80;
cm->ref_pred_probs[2] = 40;
vpx_memset(cpi->ref_pred_probs_update, 0,
sizeof(cpi->ref_pred_probs_update));
} else {
// From the prediction counts set the probabilities for each context
for (i = 0; i < PREDICTION_PROBS; i++) {
tot_count = cpi->ref_pred_count[i][0] + cpi->ref_pred_count[i][1];
if (tot_count) {
new_pred_probs[i] =
(cpi->ref_pred_count[i][0] * 255 + (tot_count >> 1)) / tot_count;
// Clamp to minimum allowed value
new_pred_probs[i] += !new_pred_probs[i];
} else
new_pred_probs[i] = 128;
// Decide whether or not to update the reference frame probs.
// Returned costs are in 1/256 bit units.
old_cost =
(cpi->ref_pred_count[i][0] * vp8_cost_zero(cm->ref_pred_probs[i])) +
(cpi->ref_pred_count[i][1] * vp8_cost_one(cm->ref_pred_probs[i]));
new_cost =
(cpi->ref_pred_count[i][0] * vp8_cost_zero(new_pred_probs[i])) +
(cpi->ref_pred_count[i][1] * vp8_cost_one(new_pred_probs[i]));
// Cost saving must be >= 8 bits (2048 in these units)
if ((old_cost - new_cost) >= 2048) {
cpi->ref_pred_probs_update[i] = 1;
cm->ref_pred_probs[i] = new_pred_probs[i];
} else
cpi->ref_pred_probs_update[i] = 0;
}
}
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}
static void write_ymode(vp8_writer *bc, int m, const vp8_prob *p) {
vp8_write_token(bc, vp8_ymode_tree, p, vp8_ymode_encodings + m);
}
static void kfwrite_ymode(vp8_writer *bc, int m, const vp8_prob *p) {
vp8_write_token(bc, vp8_kf_ymode_tree, p, vp8_kf_ymode_encodings + m);
}
#if CONFIG_SUPERBLOCKS
static void sb_kfwrite_ymode(vp8_writer *bc, int m, const vp8_prob *p) {
vp8_write_token(bc, vp8_uv_mode_tree, p, vp8_sb_kf_ymode_encodings + m);
}
#endif
static void write_i8x8_mode(vp8_writer *bc, int m, const vp8_prob *p) {
vp8_write_token(bc, vp8_i8x8_mode_tree, p, vp8_i8x8_mode_encodings + m);
}
static void write_uv_mode(vp8_writer *bc, int m, const vp8_prob *p) {
vp8_write_token(bc, vp8_uv_mode_tree, p, vp8_uv_mode_encodings + m);
}
static void write_bmode(vp8_writer *bc, int m, const vp8_prob *p) {
vp8_write_token(bc, vp8_bmode_tree, p, vp8_bmode_encodings + m);
}
static void write_split(vp8_writer *bc, int x, const vp8_prob *p) {
vp8_write_token(
bc, vp8_mbsplit_tree, p, vp8_mbsplit_encodings + x
);
}
static int prob_update_savings(const unsigned int *ct,
const vp8_prob oldp, const vp8_prob newp,
const vp8_prob upd) {
const int old_b = vp8_cost_branch256(ct, oldp);
const int new_b = vp8_cost_branch256(ct, newp);
const int update_b = 2048 + vp8_cost_upd256;
return (old_b - new_b - update_b);
}
static int prob_diff_update_savings(const unsigned int *ct,
const vp8_prob oldp, const vp8_prob newp,
const vp8_prob upd) {
const int old_b = vp8_cost_branch256(ct, oldp);
const int new_b = vp8_cost_branch256(ct, newp);
const int update_b = (newp == oldp ? 0 :
prob_diff_update_cost(newp, oldp) + vp8_cost_upd256);
return (old_b - new_b - update_b);
}
static int prob_diff_update_savings_search(const unsigned int *ct,
const vp8_prob oldp, vp8_prob *bestp,
const vp8_prob upd) {
const int old_b = vp8_cost_branch256(ct, oldp);
int new_b, update_b, savings, bestsavings, step;
vp8_prob newp, bestnewp;
bestsavings = 0;
bestnewp = oldp;
step = (*bestp > oldp ? -1 : 1);
for (newp = *bestp; newp != oldp; newp += step) {
new_b = vp8_cost_branch256(ct, newp);
update_b = prob_diff_update_cost(newp, oldp) + vp8_cost_upd256;
savings = old_b - new_b - update_b;
if (savings > bestsavings) {
421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490
bestsavings = savings;
bestnewp = newp;
}
}
*bestp = bestnewp;
return bestsavings;
}
static void pack_tokens_c(vp8_writer *w, const TOKENEXTRA *p, int xcount) {
const TOKENEXTRA *const stop = p + xcount;
unsigned int split;
unsigned int shift;
int count = w->count;
unsigned int range = w->range;
unsigned int lowvalue = w->lowvalue;
while (p < stop) {
const int t = p->Token;
vp8_token *const a = vp8_coef_encodings + t;
const vp8_extra_bit_struct *const b = vp8_extra_bits + t;
int i = 0;
const unsigned char *pp = p->context_tree;
int v = a->value;
int n = a->Len;
/* skip one or two nodes */
if (p->skip_eob_node) {
n -= p->skip_eob_node;
i = 2 * p->skip_eob_node;
}
do {
const int bb = (v >> --n) & 1;
split = 1 + (((range - 1) * pp[i >> 1]) >> 8);
i = vp8_coef_tree[i + bb];
if (bb) {
lowvalue += split;
range = range - split;
} else {
range = split;
}
shift = vp8_norm[range];
range <<= shift;
count += shift;
if (count >= 0) {
int offset = shift - count;
if ((lowvalue << (offset - 1)) & 0x80000000) {
int x = w->pos - 1;
while (x >= 0 && w->buffer[x] == 0xff) {
w->buffer[x] = (unsigned char)0;
x--;
}
w->buffer[x] += 1;
}
w->buffer[w->pos++] = (lowvalue >> (24 - offset));
lowvalue <<= offset;
shift = count;
lowvalue &= 0xffffff;
count -= 8;
}
lowvalue <<= shift;
} while (n);
491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560
if (b->base_val) {
const int e = p->Extra, L = b->Len;
if (L) {
const unsigned char *pp = b->prob;
int v = e >> 1;
int n = L; /* number of bits in v, assumed nonzero */
int i = 0;
do {
const int bb = (v >> --n) & 1;
split = 1 + (((range - 1) * pp[i >> 1]) >> 8);
i = b->tree[i + bb];
if (bb) {
lowvalue += split;
range = range - split;
} else {
range = split;
}
shift = vp8_norm[range];
range <<= shift;
count += shift;
if (count >= 0) {
int offset = shift - count;
if ((lowvalue << (offset - 1)) & 0x80000000) {
int x = w->pos - 1;
while (x >= 0 && w->buffer[x] == 0xff) {
w->buffer[x] = (unsigned char)0;
x--;
}
w->buffer[x] += 1;
}
w->buffer[w->pos++] = (lowvalue >> (24 - offset));
lowvalue <<= offset;
shift = count;
lowvalue &= 0xffffff;
count -= 8;
}
lowvalue <<= shift;
} while (n);
}
{
split = (range + 1) >> 1;
if (e & 1) {
lowvalue += split;
range = range - split;
} else {
range = split;
}
range <<= 1;
if ((lowvalue & 0x80000000)) {
int x = w->pos - 1;
while (x >= 0 && w->buffer[x] == 0xff) {
561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630
w->buffer[x] = (unsigned char)0;
x--;
}
w->buffer[x] += 1;
}
lowvalue <<= 1;
if (!++count) {
count = -8;
w->buffer[w->pos++] = (lowvalue >> 24);
lowvalue &= 0xffffff;
}
}
}
++p;
}
w->count = count;
w->lowvalue = lowvalue;
w->range = range;
}
static void write_partition_size(unsigned char *cx_data, int size) {
signed char csize;
csize = size & 0xff;
*cx_data = csize;
csize = (size >> 8) & 0xff;
*(cx_data + 1) = csize;
csize = (size >> 16) & 0xff;
*(cx_data + 2) = csize;
}
static void write_mv_ref
(
vp8_writer *w, MB_PREDICTION_MODE m, const vp8_prob *p
) {
#if CONFIG_DEBUG
assert(NEARESTMV <= m && m <= SPLITMV);
#endif
vp8_write_token(w, vp8_mv_ref_tree, p,
vp8_mv_ref_encoding_array - NEARESTMV + m);
}
#if CONFIG_SUPERBLOCKS
static void write_sb_mv_ref(vp8_writer *w, MB_PREDICTION_MODE m, const vp8_prob *p) {
#if CONFIG_DEBUG
assert(NEARESTMV <= m && m < SPLITMV);
#endif
vp8_write_token(w, vp8_sb_mv_ref_tree, p,
vp8_sb_mv_ref_encoding_array - NEARESTMV + m);
}
#endif
static void write_sub_mv_ref
(
vp8_writer *w, B_PREDICTION_MODE m, const vp8_prob *p
) {
#if CONFIG_DEBUG
assert(LEFT4X4 <= m && m <= NEW4X4);
#endif
vp8_write_token(w, vp8_sub_mv_ref_tree, p,
vp8_sub_mv_ref_encoding_array - LEFT4X4 + m);
631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700
}
#if CONFIG_NEWMVENTROPY
static void write_nmv (vp8_writer *w, const MV *mv, const int_mv *ref,
const nmv_context *nmvc, int usehp) {
MV e;
e.row = mv->row - ref->as_mv.row;
e.col = mv->col - ref->as_mv.col;
vp8_encode_nmv(w, &e, &ref->as_mv, nmvc);
vp8_encode_nmv_fp(w, &e, &ref->as_mv, nmvc, usehp);
}
#else
static void write_mv
(
vp8_writer *w, const MV *mv, const int_mv *ref, const MV_CONTEXT *mvc
) {
MV e;
e.row = mv->row - ref->as_mv.row;
e.col = mv->col - ref->as_mv.col;
vp8_encode_motion_vector(w, &e, mvc);
}
static void write_mv_hp
(
vp8_writer *w, const MV *mv, const int_mv *ref, const MV_CONTEXT_HP *mvc
) {
MV e;
e.row = mv->row - ref->as_mv.row;
e.col = mv->col - ref->as_mv.col;
vp8_encode_motion_vector_hp(w, &e, mvc);
}
#endif /* CONFIG_NEWMVENTROPY */
// This function writes the current macro block's segnment id to the bitstream
// It should only be called if a segment map update is indicated.
static void write_mb_segid(vp8_writer *w,
const MB_MODE_INFO *mi, const MACROBLOCKD *xd) {
// Encode the MB segment id.
if (xd->segmentation_enabled && xd->update_mb_segmentation_map) {
switch (mi->segment_id) {
case 0:
vp8_write(w, 0, xd->mb_segment_tree_probs[0]);
vp8_write(w, 0, xd->mb_segment_tree_probs[1]);
break;
case 1:
vp8_write(w, 0, xd->mb_segment_tree_probs[0]);
vp8_write(w, 1, xd->mb_segment_tree_probs[1]);
break;
case 2:
vp8_write(w, 1, xd->mb_segment_tree_probs[0]);
vp8_write(w, 0, xd->mb_segment_tree_probs[2]);
break;
case 3:
vp8_write(w, 1, xd->mb_segment_tree_probs[0]);
vp8_write(w, 1, xd->mb_segment_tree_probs[2]);
break;
// TRAP.. This should not happen
default:
vp8_write(w, 0, xd->mb_segment_tree_probs[0]);
vp8_write(w, 0, xd->mb_segment_tree_probs[1]);
break;
}
}
}
701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770
// This function encodes the reference frame
static void encode_ref_frame(vp8_writer *const w,
VP8_COMMON *const cm,
MACROBLOCKD *xd,
int segment_id,
MV_REFERENCE_FRAME rf) {
int seg_ref_active;
int seg_ref_count = 0;
seg_ref_active = segfeature_active(xd,
segment_id,
SEG_LVL_REF_FRAME);
if (seg_ref_active) {
seg_ref_count = check_segref(xd, segment_id, INTRA_FRAME) +
check_segref(xd, segment_id, LAST_FRAME) +
check_segref(xd, segment_id, GOLDEN_FRAME) +
check_segref(xd, segment_id, ALTREF_FRAME);
}
// If segment level coding of this signal is disabled...
// or the segment allows multiple reference frame options
if (!seg_ref_active || (seg_ref_count > 1)) {
// Values used in prediction model coding
unsigned char prediction_flag;
vp8_prob pred_prob;
MV_REFERENCE_FRAME pred_rf;
// Get the context probability the prediction flag
pred_prob = get_pred_prob(cm, xd, PRED_REF);
// Get the predicted value.
pred_rf = get_pred_ref(cm, xd);
// Did the chosen reference frame match its predicted value.
prediction_flag =
(xd->mode_info_context->mbmi.ref_frame == pred_rf);
set_pred_flag(xd, PRED_REF, prediction_flag);
vp8_write(w, prediction_flag, pred_prob);
// If not predicted correctly then code value explicitly
if (!prediction_flag) {
vp8_prob mod_refprobs[PREDICTION_PROBS];
vpx_memcpy(mod_refprobs,
cm->mod_refprobs[pred_rf], sizeof(mod_refprobs));
// If segment coding enabled blank out options that cant occur by
// setting the branch probability to 0.
if (seg_ref_active) {
mod_refprobs[INTRA_FRAME] *=
check_segref(xd, segment_id, INTRA_FRAME);
mod_refprobs[LAST_FRAME] *=
check_segref(xd, segment_id, LAST_FRAME);
mod_refprobs[GOLDEN_FRAME] *=
(check_segref(xd, segment_id, GOLDEN_FRAME) *
check_segref(xd, segment_id, ALTREF_FRAME));
}
if (mod_refprobs[0]) {
vp8_write(w, (rf != INTRA_FRAME), mod_refprobs[0]);
}
// Inter coded
if (rf != INTRA_FRAME) {
if (mod_refprobs[1]) {
vp8_write(w, (rf != LAST_FRAME), mod_refprobs[1]);
}
771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840
if (rf != LAST_FRAME) {
if (mod_refprobs[2]) {
vp8_write(w, (rf != GOLDEN_FRAME), mod_refprobs[2]);
}
}
}
}
}
// if using the prediction mdoel we have nothing further to do because
// the reference frame is fully coded by the segment
}
// Update the probabilities used to encode reference frame data
static void update_ref_probs(VP8_COMP *const cpi) {
VP8_COMMON *const cm = & cpi->common;
const int *const rfct = cpi->count_mb_ref_frame_usage;
const int rf_intra = rfct[INTRA_FRAME];
const int rf_inter = rfct[LAST_FRAME] +
rfct[GOLDEN_FRAME] + rfct[ALTREF_FRAME];
cm->prob_intra_coded = (rf_intra + rf_inter)
? rf_intra * 255 / (rf_intra + rf_inter) : 1;
if (!cm->prob_intra_coded)
cm->prob_intra_coded = 1;
cm->prob_last_coded = rf_inter ? (rfct[LAST_FRAME] * 255) / rf_inter : 128;
if (!cm->prob_last_coded)
cm->prob_last_coded = 1;
cm->prob_gf_coded = (rfct[GOLDEN_FRAME] + rfct[ALTREF_FRAME])
? (rfct[GOLDEN_FRAME] * 255) /
(rfct[GOLDEN_FRAME] + rfct[ALTREF_FRAME]) : 128;
if (!cm->prob_gf_coded)
cm->prob_gf_coded = 1;
// Compute a modified set of probabilities to use when prediction of the
// reference frame fails
compute_mod_refprobs(cm);
}
static void pack_inter_mode_mvs(VP8_COMP *const cpi) {
int i;
VP8_COMMON *const pc = & cpi->common;
vp8_writer *const w = & cpi->bc;
#if CONFIG_NEWMVENTROPY
const nmv_context *nmvc = &pc->fc.nmvc;
#else
const MV_CONTEXT *mvc = pc->fc.mvc;
const MV_CONTEXT_HP *mvc_hp = pc->fc.mvc_hp;
#endif
MACROBLOCK *x = &cpi->mb;
MACROBLOCKD *xd = &cpi->mb.e_mbd;
MODE_INFO *m;
MODE_INFO *prev_m;
const int mis = pc->mode_info_stride;
int mb_row, mb_col;
int row, col;
// Values used in prediction model coding
vp8_prob pred_prob;
unsigned char prediction_flag;
int row_delta[4] = { 0, +1, 0, -1};
int col_delta[4] = { +1, -1, +1, +1};
841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910
//final_packing = !cpi->dummy_packing;
cpi->mb.partition_info = cpi->mb.pi;
// Update the probabilities used to encode reference frame data
update_ref_probs(cpi);
#ifdef ENTROPY_STATS
active_section = 1;
#endif
if (pc->mb_no_coeff_skip) {
int k;
update_skip_probs(cpi);
for (k = 0; k < MBSKIP_CONTEXTS; ++k)
vp8_write_literal(w, pc->mbskip_pred_probs[k], 8);
}
#if CONFIG_PRED_FILTER
// Write the prediction filter mode used for this frame
vp8_write_literal(w, pc->pred_filter_mode, 2);
// Write prediction filter on/off probability if signaling at MB level
if (pc->pred_filter_mode == 2)
vp8_write_literal(w, pc->prob_pred_filter_off, 8);
// printf("pred_filter_mode:%d prob_pred_filter_off:%d\n",
// pc->pred_filter_mode, pc->prob_pred_filter_off);
#endif
#if CONFIG_SWITCHABLE_INTERP
if (pc->mcomp_filter_type == SWITCHABLE)
update_switchable_interp_probs(cpi);
#endif
vp8_write_literal(w, pc->prob_intra_coded, 8);
vp8_write_literal(w, pc->prob_last_coded, 8);
vp8_write_literal(w, pc->prob_gf_coded, 8);
if (cpi->common.comp_pred_mode == HYBRID_PREDICTION) {
vp8_write(w, 1, 128);
vp8_write(w, 1, 128);
for (i = 0; i < COMP_PRED_CONTEXTS; i++) {
if (cpi->single_pred_count[i] + cpi->comp_pred_count[i]) {
pc->prob_comppred[i] = cpi->single_pred_count[i] * 255 /
(cpi->single_pred_count[i] + cpi->comp_pred_count[i]);
if (pc->prob_comppred[i] < 1)
pc->prob_comppred[i] = 1;
} else {
pc->prob_comppred[i] = 128;
}
vp8_write_literal(w, pc->prob_comppred[i], 8);
}
} else if (cpi->common.comp_pred_mode == SINGLE_PREDICTION_ONLY) {
vp8_write(w, 0, 128);
} else { /* compound prediction only */
vp8_write(w, 1, 128);
vp8_write(w, 0, 128);
}
update_mbintra_mode_probs(cpi);
#if CONFIG_NEWMVENTROPY
vp8_write_nmvprobs(cpi, xd->allow_high_precision_mv);
#else
if (xd->allow_high_precision_mv)
vp8_write_mvprobs_hp(cpi);
else
vp8_write_mvprobs(cpi);
911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980
#endif
mb_row = 0;
for (row = 0; row < pc->mb_rows; row += 2) {
m = pc->mi + row * mis;
prev_m = pc->prev_mi + row * mis;
mb_col = 0;
for (col = 0; col < pc->mb_cols; col += 2) {
int i;
// Process the 4 MBs in the order:
// top-left, top-right, bottom-left, bottom-right
#if CONFIG_SUPERBLOCKS
vp8_write(w, m->mbmi.encoded_as_sb, pc->sb_coded);
#endif
for (i = 0; i < 4; i++) {
MB_MODE_INFO *mi;
MV_REFERENCE_FRAME rf;
MB_PREDICTION_MODE mode;
int segment_id;
int dy = row_delta[i];
int dx = col_delta[i];
int offset_extended = dy * mis + dx;
if ((mb_row >= pc->mb_rows) || (mb_col >= pc->mb_cols)) {
// MB lies outside frame, move on
mb_row += dy;
mb_col += dx;
m += offset_extended;
prev_m += offset_extended;
cpi->mb.partition_info += offset_extended;
continue;
}
mi = & m->mbmi;
rf = mi->ref_frame;
mode = mi->mode;
segment_id = mi->segment_id;
// Distance of Mb to the various image edges.
// These specified to 8th pel as they are always compared to MV
// values that are in 1/8th pel units
xd->mb_to_left_edge = -((mb_col * 16) << 3);
xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3;
xd->mb_to_top_edge = -((mb_row * 16)) << 3;
xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3;
// Make sure the MacroBlockD mode info pointer is set correctly
xd->mode_info_context = m;
xd->prev_mode_info_context = prev_m;
#ifdef ENTROPY_STATS
active_section = 9;
#endif
if (cpi->mb.e_mbd.update_mb_segmentation_map) {
// Is temporal coding of the segment map enabled
if (pc->temporal_update) {
prediction_flag = get_pred_flag(xd, PRED_SEG_ID);
pred_prob = get_pred_prob(pc, xd, PRED_SEG_ID);
// Code the segment id prediction flag for this mb
vp8_write(w, prediction_flag, pred_prob);
// If the mb segment id wasn't predicted code explicitly
if (!prediction_flag)
write_mb_segid(w, mi, &cpi->mb.e_mbd);
} else {
981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050
// Normal unpredicted coding
write_mb_segid(w, mi, &cpi->mb.e_mbd);
}
}
if (pc->mb_no_coeff_skip &&
(!segfeature_active(xd, segment_id, SEG_LVL_EOB) ||
(get_segdata(xd, segment_id, SEG_LVL_EOB) != 0))) {
int skip_coeff = mi->mb_skip_coeff;
#if CONFIG_SUPERBLOCKS
if (mi->encoded_as_sb) {
skip_coeff &= m[1].mbmi.mb_skip_coeff;
skip_coeff &= m[mis].mbmi.mb_skip_coeff;
skip_coeff &= m[mis + 1].mbmi.mb_skip_coeff;
}
#endif
vp8_encode_bool(w, skip_coeff,
get_pred_prob(pc, xd, PRED_MBSKIP));
}
// Encode the reference frame.
encode_ref_frame(w, pc, xd, segment_id, rf);
if (rf == INTRA_FRAME) {
#ifdef ENTROPY_STATS
active_section = 6;
#endif
// TODO(rbultje) write using SB tree structure
if (!segfeature_active(xd, segment_id, SEG_LVL_MODE)) {
write_ymode(w, mode, pc->fc.ymode_prob);
}
if (mode == B_PRED) {
int j = 0;
#if CONFIG_COMP_INTRA_PRED
int uses_second =
m->bmi[0].as_mode.second !=
(B_PREDICTION_MODE)(B_DC_PRED - 1);
vp8_write(w, uses_second, 128);
#endif
do {
#if CONFIG_COMP_INTRA_PRED
B_PREDICTION_MODE mode2 = m->bmi[j].as_mode.second;
#endif
write_bmode(w, m->bmi[j].as_mode.first,
pc->fc.bmode_prob);
#if CONFIG_COMP_INTRA_PRED
if (uses_second) {
write_bmode(w, mode2, pc->fc.bmode_prob);
}
#endif
} while (++j < 16);
}
if (mode == I8X8_PRED) {
write_i8x8_mode(w, m->bmi[0].as_mode.first,
pc->fc.i8x8_mode_prob);
write_i8x8_mode(w, m->bmi[2].as_mode.first,
pc->fc.i8x8_mode_prob);
write_i8x8_mode(w, m->bmi[8].as_mode.first,
pc->fc.i8x8_mode_prob);
write_i8x8_mode(w, m->bmi[10].as_mode.first,
pc->fc.i8x8_mode_prob);
} else {
write_uv_mode(w, mi->uv_mode,
pc->fc.uv_mode_prob[mode]);
}
} else {
int_mv best_mv, best_second_mv;
1051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120
int ct[4];
vp8_prob mv_ref_p [VP8_MVREFS - 1];
{
int_mv n1, n2;
vp8_find_near_mvs(xd, m, prev_m, &n1, &n2, &best_mv, ct,
rf, cpi->common.ref_frame_sign_bias);
#if CONFIG_NEWBESTREFMV
best_mv.as_int = mi->ref_mv.as_int;
#endif
vp8_mv_ref_probs(&cpi->common, mv_ref_p, ct);
#ifdef ENTROPY_STATS
accum_mv_refs(mode, ct);
#endif
}
#ifdef ENTROPY_STATS
active_section = 3;
#endif
// Is the segment coding of mode enabled
if (!segfeature_active(xd, segment_id, SEG_LVL_MODE)) {
#if CONFIG_SUPERBLOCKS
if (mi->encoded_as_sb) {
write_sb_mv_ref(w, mode, mv_ref_p);
} else
#endif
{
write_mv_ref(w, mode, mv_ref_p);
}
vp8_accum_mv_refs(&cpi->common, mode, ct);
}
#if CONFIG_PRED_FILTER
// Is the prediction filter enabled
if (mode >= NEARESTMV && mode < SPLITMV) {
if (cpi->common.pred_filter_mode == 2)
vp8_write(w, mi->pred_filter_enabled,
pc->prob_pred_filter_off);
else
assert(mi->pred_filter_enabled ==
cpi->common.pred_filter_mode);
}
#endif
#if CONFIG_SWITCHABLE_INTERP
if (mode >= NEARESTMV && mode <= SPLITMV)
{
if (cpi->common.mcomp_filter_type == SWITCHABLE) {
vp8_write_token(w, vp8_switchable_interp_tree,
get_pred_probs(&cpi->common, xd, PRED_SWITCHABLE_INTERP),
vp8_switchable_interp_encodings +
vp8_switchable_interp_map[mi->interp_filter]);
//if (!cpi->dummy_packing) printf("Reading: %d\n", mi->interp_filter);
} else {
assert (mi->interp_filter ==
cpi->common.mcomp_filter_type);
}
}
#endif
if (mi->second_ref_frame &&
(mode == NEWMV || mode == SPLITMV)) {
int_mv n1, n2;
vp8_find_near_mvs(xd, m,
prev_m,
&n1, &n2, &best_second_mv, ct,
mi->second_ref_frame,
1121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190
cpi->common.ref_frame_sign_bias);
#if CONFIG_NEWBESTREFMV
best_second_mv.as_int = mi->second_ref_mv.as_int;
#endif
}
// does the feature use compound prediction or not
// (if not specified at the frame/segment level)
if (cpi->common.comp_pred_mode == HYBRID_PREDICTION) {
vp8_write(w, mi->second_ref_frame != INTRA_FRAME,
get_pred_prob(pc, xd, PRED_COMP));
}
{
switch (mode) { /* new, split require MVs */
case NEWMV:
#ifdef ENTROPY_STATS
active_section = 5;
#endif
#if 0 //CONFIG_NEW_MVREF
{
unsigned int best_index;
/*find_mv_refs(xd, m, prev_m,
m->mbmi.ref_frame,
mi->ref_mvs[rf],
cpi->common.ref_frame_sign_bias );*/
best_index = pick_best_mv_ref(x, mi->mv[0],
mi->ref_mvs[rf], &best_mv);
cpi->best_ref_index_counts[best_index]++;
}
#endif
#if CONFIG_NEWMVENTROPY
write_nmv(w, &mi->mv[0].as_mv, &best_mv,
(const nmv_context*) nmvc,
xd->allow_high_precision_mv);
#else
if (xd->allow_high_precision_mv) {
write_mv_hp(w, &mi->mv[0].as_mv, &best_mv, mvc_hp);
} else {
write_mv(w, &mi->mv[0].as_mv, &best_mv, mvc);
}
#endif
if (mi->second_ref_frame) {
#if 0 //CONFIG_NEW_MVREF
unsigned int best_index;
/*find_mv_refs(xd, m, prev_m,
m->mbmi.second_ref_frame,
mi->ref_mvs[mi->second_ref_frame],
cpi->common.ref_frame_sign_bias );*/
best_index =
pick_best_mv_ref(x, mi->mv[1],
mi->ref_mvs[mi->second_ref_frame],
&best_second_mv);
cpi->best_ref_index_counts[best_index]++;
#endif
#if CONFIG_NEWMVENTROPY
write_nmv(w, &mi->mv[1].as_mv, &best_second_mv,
(const nmv_context*) nmvc,
xd->allow_high_precision_mv);
#else
if (xd->allow_high_precision_mv) {
write_mv_hp(w, &mi->mv[1].as_mv, &best_second_mv, mvc_hp);
} else {
write_mv(w, &mi->mv[1].as_mv, &best_second_mv, mvc);
1191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260
}
#endif
}
break;
case SPLITMV: {
int j = 0;
#ifdef MODE_STATS
++count_mb_seg [mi->partitioning];
#endif
write_split(w, mi->partitioning, cpi->common.fc.mbsplit_prob);
cpi->mbsplit_count[mi->partitioning]++;
do {
B_PREDICTION_MODE blockmode;
int_mv blockmv;
const int *const L =
vp8_mbsplits [mi->partitioning];
int k = -1; /* first block in subset j */
int mv_contz;
int_mv leftmv, abovemv;
blockmode = cpi->mb.partition_info->bmi[j].mode;
blockmv = cpi->mb.partition_info->bmi[j].mv;
#if CONFIG_DEBUG
while (j != L[++k])
if (k >= 16)
assert(0);
#else
while (j != L[++k]);
#endif
leftmv.as_int = left_block_mv(m, k);
abovemv.as_int = above_block_mv(m, k, mis);
mv_contz = vp8_mv_cont(&leftmv, &abovemv);
write_sub_mv_ref(w, blockmode,
cpi->common.fc.sub_mv_ref_prob [mv_contz]);
cpi->sub_mv_ref_count[mv_contz][blockmode - LEFT4X4]++;
if (blockmode == NEW4X4) {
#ifdef ENTROPY_STATS
active_section = 11;
#endif
#if CONFIG_NEWMVENTROPY
write_nmv(w, &blockmv.as_mv, &best_mv,
(const nmv_context*) nmvc,
xd->allow_high_precision_mv);
#else
if (xd->allow_high_precision_mv) {
write_mv_hp(w, &blockmv.as_mv, &best_mv,
(const MV_CONTEXT_HP *) mvc_hp);
} else {
write_mv(w, &blockmv.as_mv, &best_mv,
(const MV_CONTEXT *) mvc);
}
#endif
if (mi->second_ref_frame) {
#if CONFIG_NEWMVENTROPY
write_nmv(w,
&cpi->mb.partition_info->bmi[j].second_mv.as_mv,
&best_second_mv,
(const nmv_context*) nmvc,
xd->allow_high_precision_mv);
#else
if (xd->allow_high_precision_mv) {
write_mv_hp(w, &cpi->mb.partition_info->bmi[j].second_mv.as_mv,
&best_second_mv, (const MV_CONTEXT_HP *) mvc_hp);
} else {
write_mv(w, &cpi->mb.partition_info->bmi[j].second_mv.as_mv,
1261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330
&best_second_mv, (const MV_CONTEXT *) mvc);
}
#endif
}
}
} while (++j < cpi->mb.partition_info->count);
}
break;
default:
break;
}
}
}
#if CONFIG_SUPERBLOCKS
if (m->mbmi.encoded_as_sb) {
assert(!i);
mb_col += 2;
m += 2;
cpi->mb.partition_info += 2;
prev_m += 2;
break;
}
#endif
// Next MB
mb_row += dy;
mb_col += dx;
m += offset_extended;
prev_m += offset_extended;
cpi->mb.partition_info += offset_extended;
#if CONFIG_DEBUG
assert((prev_m - cpi->common.prev_mip) == (m - cpi->common.mip));
assert((prev_m - cpi->common.prev_mi) == (m - cpi->common.mi));
#endif
}
}
// Next SB
mb_row += 2;
m += mis + (1 - (pc->mb_cols & 0x1));
prev_m += mis + (1 - (pc->mb_cols & 0x1));
cpi->mb.partition_info += mis + (1 - (pc->mb_cols & 0x1));
}
}
static void write_kfmodes(VP8_COMP *cpi) {
vp8_writer *const bc = & cpi->bc;
VP8_COMMON *const c = & cpi->common;
const int mis = c->mode_info_stride;
MACROBLOCKD *xd = &cpi->mb.e_mbd;
MODE_INFO *m;
int i;
int row, col;
int mb_row, mb_col;
int prob_skip_false[3] = {0, 0, 0};
int row_delta[4] = { 0, +1, 0, -1};
int col_delta[4] = { +1, -1, +1, +1};
// printf("write_kfmodes\n");
if (c->mb_no_coeff_skip) {
// Divide by 0 check. 0 case possible with segment features
int k;
for (k = 0; k < MBSKIP_CONTEXTS; ++k) {
if ((cpi->skip_false_count[k] + cpi->skip_true_count[k])) {
prob_skip_false[k] = cpi->skip_false_count[k] * 256 /
(cpi->skip_false_count[k] + cpi->skip_true_count[k]);
if (prob_skip_false[k] <= 1)
prob_skip_false[k] = 1;
1331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400
if (prob_skip_false[k] > 255)
prob_skip_false[k] = 255;
} else
prob_skip_false[k] = 255;
c->mbskip_pred_probs[k] = prob_skip_false[k];
vp8_write_literal(bc, prob_skip_false[k], 8);
}
}
if (!c->kf_ymode_probs_update) {
vp8_write_literal(bc, c->kf_ymode_probs_index, 3);
}
mb_row = 0;
for (row = 0; row < c->mb_rows; row += 2) {
m = c->mi + row * mis;
mb_col = 0;
for (col = 0; col < c->mb_cols; col += 2) {
#if CONFIG_SUPERBLOCKS
vp8_write(bc, m->mbmi.encoded_as_sb, c->sb_coded);
#endif
// Process the 4 MBs in the order:
// top-left, top-right, bottom-left, bottom-right
for (i = 0; i < 4; i++) {
int ym;
int segment_id;
int dy = row_delta[i];
int dx = col_delta[i];
int offset_extended = dy * mis + dx;
if ((mb_row >= c->mb_rows) || (mb_col >= c->mb_cols)) {
// MB lies outside frame, move on
mb_row += dy;
mb_col += dx;
m += offset_extended;
continue;
}
// Make sure the MacroBlockD mode info pointer is set correctly
xd->mode_info_context = m;
ym = m->mbmi.mode;
segment_id = m->mbmi.segment_id;
if (cpi->mb.e_mbd.update_mb_segmentation_map) {
write_mb_segid(bc, &m->mbmi, &cpi->mb.e_mbd);
}
if (c->mb_no_coeff_skip &&
(!segfeature_active(xd, segment_id, SEG_LVL_EOB) ||
(get_segdata(xd, segment_id, SEG_LVL_EOB) != 0))) {
int skip_coeff = m->mbmi.mb_skip_coeff;
#if CONFIG_SUPERBLOCKS
if (m->mbmi.encoded_as_sb) {
skip_coeff &= m[1].mbmi.mb_skip_coeff;
skip_coeff &= m[mis].mbmi.mb_skip_coeff;
skip_coeff &= m[mis + 1].mbmi.mb_skip_coeff;
}
#endif
vp8_encode_bool(bc, skip_coeff,
get_pred_prob(c, xd, PRED_MBSKIP));
}
#if CONFIG_SUPERBLOCKS
if (m->mbmi.encoded_as_sb) {
sb_kfwrite_ymode(bc, ym,
c->sb_kf_ymode_prob[c->kf_ymode_probs_index]);
} else
1401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470
#endif
{
kfwrite_ymode(bc, ym,
c->kf_ymode_prob[c->kf_ymode_probs_index]);
}
if (ym == B_PRED) {
const int mis = c->mode_info_stride;
int i = 0;
#if CONFIG_COMP_INTRA_PRED
int uses_second =
m->bmi[0].as_mode.second !=
(B_PREDICTION_MODE)(B_DC_PRED - 1);
vp8_write(bc, uses_second, 128);
#endif
do {
const B_PREDICTION_MODE A = above_block_mode(m, i, mis);
const B_PREDICTION_MODE L = left_block_mode(m, i);
const int bm = m->bmi[i].as_mode.first;
#if CONFIG_COMP_INTRA_PRED
const int bm2 = m->bmi[i].as_mode.second;
#endif
#ifdef ENTROPY_STATS
++intra_mode_stats [A] [L] [bm];
#endif
write_bmode(bc, bm, c->kf_bmode_prob [A] [L]);
// printf(" mode: %d\n", bm);
#if CONFIG_COMP_INTRA_PRED
if (uses_second) {
write_bmode(bc, bm2, c->kf_bmode_prob [A] [L]);
}
#endif
} while (++i < 16);
}
if (ym == I8X8_PRED) {
write_i8x8_mode(bc, m->bmi[0].as_mode.first,
c->fc.i8x8_mode_prob);
// printf(" mode: %d\n", m->bmi[0].as_mode.first); fflush(stdout);
write_i8x8_mode(bc, m->bmi[2].as_mode.first,
c->fc.i8x8_mode_prob);
// printf(" mode: %d\n", m->bmi[2].as_mode.first); fflush(stdout);
write_i8x8_mode(bc, m->bmi[8].as_mode.first,
c->fc.i8x8_mode_prob);
// printf(" mode: %d\n", m->bmi[8].as_mode.first); fflush(stdout);
write_i8x8_mode(bc, m->bmi[10].as_mode.first,
c->fc.i8x8_mode_prob);
// printf(" mode: %d\n", m->bmi[10].as_mode.first); fflush(stdout);
} else
write_uv_mode(bc, m->mbmi.uv_mode, c->kf_uv_mode_prob[ym]);
#if CONFIG_SUPERBLOCKS
if (m->mbmi.encoded_as_sb) {
assert(!i);
mb_col += 2;
m += 2;
break;
}
#endif
// Next MB
mb_row += dy;
mb_col += dx;
m += offset_extended;
}
}
mb_row += 2;
}
}
1471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540
/* This function is used for debugging probability trees. */
static void print_prob_tree(vp8_prob
coef_probs[BLOCK_TYPES][COEF_BANDS][PREV_COEF_CONTEXTS][ENTROPY_NODES]) {
/* print coef probability tree */
int i, j, k, l;
FILE *f = fopen("enc_tree_probs.txt", "a");
fprintf(f, "{\n");
for (i = 0; i < BLOCK_TYPES; i++) {
fprintf(f, " {\n");
for (j = 0; j < COEF_BANDS; j++) {
fprintf(f, " {\n");
for (k = 0; k < PREV_COEF_CONTEXTS; k++) {
fprintf(f, " {");
for (l = 0; l < ENTROPY_NODES; l++) {
fprintf(f, "%3u, ",
(unsigned int)(coef_probs [i][j][k][l]));
}
fprintf(f, " }\n");
}
fprintf(f, " }\n");
}
fprintf(f, " }\n");
}
fprintf(f, "}\n");
fclose(f);
}
void build_coeff_contexts(VP8_COMP *cpi) {
int i = 0, j, k;
#ifdef ENTROPY_STATS
int t = 0;
#endif
for (i = 0; i < BLOCK_TYPES; ++i) {
for (j = 0; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
vp8_tree_probs_from_distribution(
MAX_ENTROPY_TOKENS, vp8_coef_encodings, vp8_coef_tree,
cpi->frame_coef_probs [i][j][k],
cpi->frame_branch_ct [i][j][k],
cpi->coef_counts [i][j][k],
256, 1
);
#ifdef ENTROPY_STATS
if (!cpi->dummy_packing)
for (t = 0; t < MAX_ENTROPY_TOKENS; ++t)
context_counters[i][j][k][t] += cpi->coef_counts[i][j][k][t];
#endif
}
}
}
if (cpi->common.txfm_mode == ALLOW_8X8) {
for (i = 0; i < BLOCK_TYPES_8X8; ++i) {
for (j = 0; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
/* at every context */
/* calc probs and branch cts for this frame only */
// vp8_prob new_p [ENTROPY_NODES];
// unsigned int branch_ct [ENTROPY_NODES] [2];
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
vp8_tree_probs_from_distribution(
MAX_ENTROPY_TOKENS, vp8_coef_encodings, vp8_coef_tree,
cpi->frame_coef_probs_8x8 [i][j][k],
cpi->frame_branch_ct_8x8 [i][j][k],
1541154215431544154515461547154815491550155115521553155415551556155715581559156015611562156315641565156615671568156915701571157215731574157515761577157815791580158115821583158415851586158715881589159015911592159315941595159615971598159916001601160216031604160516061607160816091610
cpi->coef_counts_8x8 [i][j][k],
256, 1
);
#ifdef ENTROPY_STATS
if (!cpi->dummy_packing)
for (t = 0; t < MAX_ENTROPY_TOKENS; ++t)
context_counters_8x8[i][j][k][t] += cpi->coef_counts_8x8[i][j][k][t];
#endif
}
}
}
}
#if CONFIG_TX16X16 || CONFIG_HYBRIDTRANSFORM16X16
//16x16
for (i = 0; i < BLOCK_TYPES_16X16; ++i) {
for (j = 0; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
vp8_tree_probs_from_distribution(
MAX_ENTROPY_TOKENS, vp8_coef_encodings, vp8_coef_tree,
cpi->frame_coef_probs_16x16[i][j][k],
cpi->frame_branch_ct_16x16[i][j][k],
cpi->coef_counts_16x16[i][j][k], 256, 1);
#ifdef ENTROPY_STATS
if (!cpi->dummy_packing)
for (t = 0; t < MAX_ENTROPY_TOKENS; ++t)
context_counters_16x16[i][j][k][t] += cpi->coef_counts_16x16[i][j][k][t];
#endif
}
}
}
#endif
}
static void update_coef_probs2(VP8_COMP *cpi) {
const vp8_prob grpupd = 192;
int i, j, k, t;
vp8_writer *const w = & cpi->bc;
int update[2];
int savings;
vp8_clear_system_state(); // __asm emms;
// Build the cofficient contexts based on counts collected in encode loop
build_coeff_contexts(cpi);
for (t = 0; t < ENTROPY_NODES; ++t) {
/* dry run to see if there is any udpate at all needed */
savings = 0;
update[0] = update[1] = 0;
for (i = 0; i < BLOCK_TYPES; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
vp8_prob newp = cpi->frame_coef_probs [i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs [i][j][k] + t;
const vp8_prob upd = COEF_UPDATE_PROB;
int s;
int u = 0;
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(
cpi->frame_branch_ct [i][j][k][t], *Pold, &newp, upd);
if (s > 0 && newp != *Pold) u = 1;
if (u)
savings += s - (int)(vp8_cost_zero(upd));
else
savings -= (int)(vp8_cost_zero(upd));
1611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662166316641665166616671668166916701671167216731674167516761677167816791680
#else
s = prob_update_savings(
cpi->frame_branch_ct [i][j][k][t], *Pold, newp, upd);
if (s > 0) u = 1;
if (u)
savings += s;
#endif
// printf(" %d %d %d: %d\n", i, j, k, u);
update[u]++;
}
}
}
if (update[1] == 0 || savings < 0) {
vp8_write(w, 0, grpupd);
continue;
}
vp8_write(w, 1, grpupd);
for (i = 0; i < BLOCK_TYPES; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
vp8_prob newp = cpi->frame_coef_probs [i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs [i][j][k] + t;
const vp8_prob upd = COEF_UPDATE_PROB;
int s;
int u = 0;
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(
cpi->frame_branch_ct [i][j][k][t], *Pold, &newp, upd);
if (s > 0 && newp != *Pold) u = 1;
#else
s = prob_update_savings(
cpi->frame_branch_ct [i][j][k][t], *Pold, newp, upd);
if (s > 0) u = 1;
#endif
// printf(" %d %d %d: %d (%d)\n", i, j, k, u, upd);
vp8_write(w, u, upd);
#ifdef ENTROPY_STATS
++ tree_update_hist [i][j][k][t] [u];
#endif
if (u) {
/* send/use new probability */
write_prob_diff_update(w, newp, *Pold);
*Pold = newp;
}
}
}
}
}
if (cpi->common.txfm_mode != ALLOW_8X8) return;
for (t = 0; t < ENTROPY_NODES; ++t) {
/* dry run to see if there is any udpate at all needed */
savings = 0;
update[0] = update[1] = 0;
for (i = 0; i < BLOCK_TYPES_8X8; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
vp8_prob newp = cpi->frame_coef_probs_8x8 [i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs_8x8 [i][j][k] + t;
const vp8_prob upd = COEF_UPDATE_PROB_8X8;
int s;
int u = 0;
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(
cpi->frame_branch_ct_8x8 [i][j][k][t],
1681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750
*Pold, &newp, upd);
if (s > 0 && newp != *Pold)
u = 1;
if (u)
savings += s - (int)(vp8_cost_zero(upd));
else
savings -= (int)(vp8_cost_zero(upd));
#else
s = prob_update_savings(
cpi->frame_branch_ct_8x8 [i][j][k][t],
*Pold, newp, upd);
if (s > 0)
u = 1;
if (u)
savings += s;
#endif
update[u]++;
}
}
}
if (update[1] == 0 || savings < 0) {
vp8_write(w, 0, grpupd);
continue;
}
vp8_write(w, 1, grpupd);
for (i = 0; i < BLOCK_TYPES_8X8; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
vp8_prob newp = cpi->frame_coef_probs_8x8 [i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs_8x8 [i][j][k] + t;
const vp8_prob upd = COEF_UPDATE_PROB_8X8;
int s;
int u = 0;
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(
cpi->frame_branch_ct_8x8 [i][j][k][t],
*Pold, &newp, upd);
if (s > 0 && newp != *Pold)
u = 1;
#else
s = prob_update_savings(
cpi->frame_branch_ct_8x8 [i][j][k][t],
*Pold, newp, upd);
if (s > 0)
u = 1;
#endif
vp8_write(w, u, upd);
#ifdef ENTROPY_STATS
if (!cpi->dummy_packing)
++ tree_update_hist_8x8 [i][j][k][t] [u];
#endif
if (u) {
/* send/use new probability */
write_prob_diff_update(w, newp, *Pold);
*Pold = newp;
}
}
}
}
}
}
static void update_coef_probs(VP8_COMP *cpi) {
int i, j, k, t;
vp8_writer *const w = & cpi->bc;
int update[2] = {0, 0};
int savings;
1751175217531754175517561757175817591760176117621763176417651766176717681769177017711772177317741775177617771778177917801781178217831784178517861787178817891790179117921793179417951796179717981799180018011802180318041805180618071808180918101811181218131814181518161817181818191820
vp8_clear_system_state(); // __asm emms;
// Build the cofficient contexts based on counts collected in encode loop
build_coeff_contexts(cpi);
// vp8_prob bestupd = find_coef_update_prob(cpi);
/* dry run to see if there is any udpate at all needed */
savings = 0;
for (i = 0; i < BLOCK_TYPES; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
int prev_coef_savings[ENTROPY_NODES] = {0};
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
for (t = 0; t < ENTROPY_NODES; ++t) {
vp8_prob newp = cpi->frame_coef_probs [i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs [i][j][k] + t;
const vp8_prob upd = COEF_UPDATE_PROB;
int s = prev_coef_savings[t];
int u = 0;
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(
cpi->frame_branch_ct [i][j][k][t],
*Pold, &newp, upd);
if (s > 0 && newp != *Pold)
u = 1;
if (u)
savings += s - (int)(vp8_cost_zero(upd));
else
savings -= (int)(vp8_cost_zero(upd));
#else
s = prob_update_savings(
cpi->frame_branch_ct [i][j][k][t],
*Pold, newp, upd);
if (s > 0)
u = 1;
if (u)
savings += s;
#endif
update[u]++;
}
}
}
}
// printf("Update %d %d, savings %d\n", update[0], update[1], savings);
/* Is coef updated at all */
if (update[1] == 0 || savings < 0)
vp8_write_bit(w, 0);
else {
vp8_write_bit(w, 1);
for (i = 0; i < BLOCK_TYPES; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
int prev_coef_savings[ENTROPY_NODES] = {0};
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
// calc probs and branch cts for this frame only
for (t = 0; t < ENTROPY_NODES; ++t) {
vp8_prob newp = cpi->frame_coef_probs [i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs [i][j][k] + t;
const vp8_prob upd = COEF_UPDATE_PROB;
int s = prev_coef_savings[t];
int u = 0;
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(
cpi->frame_branch_ct [i][j][k][t],
1821182218231824182518261827182818291830183118321833183418351836183718381839184018411842184318441845184618471848184918501851185218531854185518561857185818591860186118621863186418651866186718681869187018711872187318741875187618771878187918801881188218831884188518861887188818891890
*Pold, &newp, upd);
if (s > 0 && newp != *Pold)
u = 1;
#else
s = prob_update_savings(
cpi->frame_branch_ct [i][j][k][t],
*Pold, newp, upd);
if (s > 0)
u = 1;
#endif
vp8_write(w, u, upd);
#ifdef ENTROPY_STATS
if (!cpi->dummy_packing)
++ tree_update_hist [i][j][k][t] [u];
#endif
if (u) {
/* send/use new probability */
write_prob_diff_update(w, newp, *Pold);
*Pold = newp;
}
}
}
}
}
}
/* do not do this if not even allowed */
if (cpi->common.txfm_mode == ALLOW_8X8) {
/* dry run to see if update is necessary */
update[0] = update[1] = 0;
savings = 0;
for (i = 0; i < BLOCK_TYPES_8X8; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
// calc probs and branch cts for this frame only
for (t = 0; t < ENTROPY_NODES; ++t) {
const unsigned int *ct = cpi->frame_branch_ct_8x8 [i][j][k][t];
vp8_prob newp = cpi->frame_coef_probs_8x8 [i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs_8x8 [i][j][k] + t;
const vp8_prob oldp = *Pold;
int s, u;
const vp8_prob upd = COEF_UPDATE_PROB_8X8;
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(ct, oldp, &newp, upd);
u = s > 0 && newp != oldp ? 1 : 0;
if (u)
savings += s - (int)(vp8_cost_zero(upd));
else
savings -= (int)(vp8_cost_zero(upd));
#else
s = prob_update_savings(ct, oldp, newp, upd);
u = s > 0 ? 1 : 0;
if (u)
savings += s;
#endif
update[u]++;
}
}
}
}
if (update[1] == 0 || savings < 0)
vp8_write_bit(w, 0);
else {
vp8_write_bit(w, 1);
for (i = 0; i < BLOCK_TYPES_8X8; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
1891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945194619471948194919501951195219531954195519561957195819591960
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
for (t = 0; t < ENTROPY_NODES; ++t) {
const unsigned int *ct = cpi->frame_branch_ct_8x8 [i][j][k][t];
vp8_prob newp = cpi->frame_coef_probs_8x8 [i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs_8x8 [i][j][k] + t;
const vp8_prob oldp = *Pold;
const vp8_prob upd = COEF_UPDATE_PROB_8X8;
int s, u;
if (k >= 3 && ((i == 0 && j == 1) ||
(i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(ct, oldp, &newp, upd);
u = s > 0 && newp != oldp ? 1 : 0;
#else
s = prob_update_savings(ct, oldp, newp, upd);
u = s > 0 ? 1 : 0;
#endif
vp8_write(w, u, upd);
#ifdef ENTROPY_STATS
if (!cpi->dummy_packing)
++ tree_update_hist_8x8 [i][j][k][t] [u];
#endif
if (u) {
/* send/use new probability */
write_prob_diff_update(w, newp, oldp);
*Pold = newp;
}
}
}
}
}
}
}
#if CONFIG_TX16X16 || CONFIG_HYBRIDTRANSFORM16X16
// 16x16
/* dry run to see if update is necessary */
update[0] = update[1] = 0;
savings = 0;
for (i = 0; i < BLOCK_TYPES_16X16; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
// calc probs and branch cts for this frame only
for (t = 0; t < ENTROPY_NODES; ++t) {
const unsigned int *ct = cpi->frame_branch_ct_16x16[i][j][k][t];
vp8_prob newp = cpi->frame_coef_probs_16x16[i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs_16x16[i][j][k] + t;
const vp8_prob oldp = *Pold;
int s, u;
const vp8_prob upd = COEF_UPDATE_PROB_16X16;
if (k >= 3 && ((i == 0 && j == 1) || (i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(ct, oldp, &newp, upd);
u = s > 0 && newp != oldp ? 1 : 0;
if (u)
savings += s - (int)(vp8_cost_zero(upd));
else
savings -= (int)(vp8_cost_zero(upd));
#else
s = prob_update_savings(ct, oldp, newp, upd);
u = s > 0 ? 1 : 0;
if (u)
savings += s;
#endif
update[u]++;
}
}
}
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}
if (update[1] == 0 || savings < 0)
vp8_write_bit(w, 0);
else {
vp8_write_bit(w, 1);
for (i = 0; i < BLOCK_TYPES_16X16; ++i) {
for (j = !i; j < COEF_BANDS; ++j) {
for (k = 0; k < PREV_COEF_CONTEXTS; ++k) {
for (t = 0; t < ENTROPY_NODES; ++t) {
const unsigned int *ct = cpi->frame_branch_ct_16x16[i][j][k][t];
vp8_prob newp = cpi->frame_coef_probs_16x16[i][j][k][t];
vp8_prob *Pold = cpi->common.fc.coef_probs_16x16[i][j][k] + t;
const vp8_prob oldp = *Pold;
const vp8_prob upd = COEF_UPDATE_PROB_16X16;
int s, u;
if (k >= 3 && ((i == 0 && j == 1) ||
(i > 0 && j == 0)))
continue;
#if defined(SEARCH_NEWP)
s = prob_diff_update_savings_search(ct, oldp, &newp, upd);
u = s > 0 && newp != oldp ? 1 : 0;
#else
s = prob_update_savings(ct, oldp, newp, upd);
u = s > 0 ? 1 : 0;
#endif
vp8_write(w, u, upd);
#ifdef ENTROPY_STATS
if (!cpi->dummy_packing)
++tree_update_hist_16x16[i][j][k][t][u];
#endif
if (u) {
/* send/use new probability */
write_prob_diff_update(w, newp, oldp);
*Pold = newp;
}
}
}
}
}
}
#endif
}
#ifdef PACKET_TESTING
FILE *vpxlogc = 0;
#endif
static void put_delta_q(vp8_writer *bc, int delta_q) {
if (delta_q != 0) {
vp8_write_bit(bc, 1);
vp8_write_literal(bc, abs(delta_q), 4);
if (delta_q < 0)
vp8_write_bit(bc, 1);
else
vp8_write_bit(bc, 0);
} else
vp8_write_bit(bc, 0);
}
static void decide_kf_ymode_entropy(VP8_COMP *cpi) {
int mode_cost[MB_MODE_COUNT];
int cost;
int bestcost = INT_MAX;
int bestindex = 0;
int i, j;
for (i = 0; i < 8; i++) {
2031203220332034203520362037203820392040204120422043204420452046204720482049205020512052205320542055205620572058205920602061206220632064206520662067206820692070207120722073207420752076207720782079208020812082208320842085208620872088208920902091209220932094209520962097209820992100
vp8_cost_tokens(mode_cost, cpi->common.kf_ymode_prob[i], vp8_kf_ymode_tree);
cost = 0;
for (j = 0; j < VP8_YMODES; j++) {
cost += mode_cost[j] * cpi->ymode_count[j];
}
#if CONFIG_SUPERBLOCKS
vp8_cost_tokens(mode_cost, cpi->common.sb_kf_ymode_prob[i],
vp8_sb_ymode_tree);
for (j = 0; j < VP8_I32X32_MODES; j++) {
cost += mode_cost[j] * cpi->sb_ymode_count[j];
}
#endif
if (cost < bestcost) {
bestindex = i;
bestcost = cost;
}
}
cpi->common.kf_ymode_probs_index = bestindex;
}
static void segment_reference_frames(VP8_COMP *cpi) {
VP8_COMMON *oci = &cpi->common;
MODE_INFO *mi = oci->mi;
int ref[MAX_MB_SEGMENTS] = {0};
int i, j;
int mb_index = 0;
MACROBLOCKD *const xd = & cpi->mb.e_mbd;
for (i = 0; i < oci->mb_rows; i++) {
for (j = 0; j < oci->mb_cols; j++, mb_index++) {
ref[mi[mb_index].mbmi.segment_id] |= (1 << mi[mb_index].mbmi.ref_frame);
}
mb_index++;
}
for (i = 0; i < MAX_MB_SEGMENTS; i++) {
enable_segfeature(xd, i, SEG_LVL_REF_FRAME);
set_segdata(xd, i, SEG_LVL_REF_FRAME, ref[i]);
}
}
void vp8_pack_bitstream(VP8_COMP *cpi, unsigned char *dest, unsigned long *size) {
int i, j;
VP8_HEADER oh;
VP8_COMMON *const pc = & cpi->common;
vp8_writer *const bc = & cpi->bc;
MACROBLOCKD *const xd = & cpi->mb.e_mbd;
int extra_bytes_packed = 0;
unsigned char *cx_data = dest;
oh.show_frame = (int) pc->show_frame;
oh.type = (int)pc->frame_type;
oh.version = pc->version;
oh.first_partition_length_in_bytes = 0;
cx_data += 3;
#if defined(SECTIONBITS_OUTPUT)
Sectionbits[active_section = 1] += sizeof(VP8_HEADER) * 8 * 256;
#endif
compute_update_table();
// vp8_kf_default_bmode_probs() is called in vp8_setup_key_frame() once for each
// K frame before encode frame. pc->kf_bmode_prob doesn't get changed anywhere
// else. No need to call it again here. --yw
// vp8_kf_default_bmode_probs( pc->kf_bmode_prob);
// every keyframe send startcode, width, height, scale factor, clamp and color type
if (oh.type == KEY_FRAME) {
2101210221032104210521062107210821092110211121122113211421152116211721182119212021212122212321242125212621272128212921302131213221332134213521362137213821392140214121422143214421452146214721482149215021512152215321542155215621572158215921602161216221632164216521662167216821692170
int v;
// Start / synch code
cx_data[0] = 0x9D;
cx_data[1] = 0x01;
cx_data[2] = 0x2a;
v = (pc->horiz_scale << 14) | pc->Width;
cx_data[3] = v;
cx_data[4] = v >> 8;
v = (pc->vert_scale << 14) | pc->Height;
cx_data[5] = v;
cx_data[6] = v >> 8;
extra_bytes_packed = 7;
cx_data += extra_bytes_packed;
vp8_start_encode(bc, cx_data);
// signal clr type
vp8_write_bit(bc, pc->clr_type);
vp8_write_bit(bc, pc->clamp_type);
} else
vp8_start_encode(bc, cx_data);
// Signal whether or not Segmentation is enabled
vp8_write_bit(bc, (xd->segmentation_enabled) ? 1 : 0);
// Indicate which features are enabled
if (xd->segmentation_enabled) {
// Indicate whether or not the segmentation map is being updated.
vp8_write_bit(bc, (xd->update_mb_segmentation_map) ? 1 : 0);
// If it is, then indicate the method that will be used.
if (xd->update_mb_segmentation_map) {
// Select the coding strategy (temporal or spatial)
choose_segmap_coding_method(cpi);
// Write out the chosen coding method.
vp8_write_bit(bc, (pc->temporal_update) ? 1 : 0);
}
vp8_write_bit(bc, (xd->update_mb_segmentation_data) ? 1 : 0);
// segment_reference_frames(cpi);
if (xd->update_mb_segmentation_data) {
signed char Data;
vp8_write_bit(bc, (xd->mb_segment_abs_delta) ? 1 : 0);
// For each segments id...
for (i = 0; i < MAX_MB_SEGMENTS; i++) {
// For each segmentation codable feature...
for (j = 0; j < SEG_LVL_MAX; j++) {
Data = get_segdata(xd, i, j);
#if CONFIG_FEATUREUPDATES
// check if there's an update
if (segfeature_changed(xd, i, j)) {
vp8_write_bit(bc, 1);
if (segfeature_active(xd, i, j)) {
// this bit is to say we are still
// active/ if we were inactive
// this is unnecessary
2171217221732174217521762177217821792180218121822183218421852186218721882189219021912192219321942195219621972198219922002201220222032204220522062207220822092210221122122213221422152216221722182219222022212222222322242225222622272228222922302231223222332234223522362237223822392240
if (old_segfeature_active(xd, i, j)) {
vp8_write_bit(bc, 1);
}
// Is the segment data signed..
if (is_segfeature_signed(j)) {
// Encode the relevant feature data
if (Data < 0) {
Data = - Data;
vp8_write_literal(bc, Data,
seg_feature_data_bits(j));
vp8_write_bit(bc, 1);
} else {
vp8_write_literal(bc, Data,
seg_feature_data_bits(j));
vp8_write_bit(bc, 0);
}
}
// Unsigned data element so no sign bit needed
else
vp8_write_literal(bc, Data,
seg_feature_data_bits(j));
}
// feature is inactive now
else if (old_segfeature_active(xd, i, j)) {
vp8_write_bit(bc, 0);
}
} else {
vp8_write_bit(bc, 0);
}
#else
// If the feature is enabled...
if (segfeature_active(xd, i, j)) {
vp8_write_bit(bc, 1);
// Is the segment data signed..
if (is_segfeature_signed(j)) {
// Encode the relevant feature data
if (Data < 0) {
Data = - Data;
vp8_write_literal(bc, Data,
seg_feature_data_bits(j));
vp8_write_bit(bc, 1);
} else {
vp8_write_literal(bc, Data,
seg_feature_data_bits(j));
vp8_write_bit(bc, 0);
}
}
// Unsigned data element so no sign bit needed
else
vp8_write_literal(bc, Data,
seg_feature_data_bits(j));
} else
vp8_write_bit(bc, 0);
#endif
}
}
}
#if CONFIG_FEATUREUPDATES
// save the segment info for updates next frame
save_segment_info(xd);
#endif
if (xd->update_mb_segmentation_map) {
// Send the tree probabilities used to decode unpredicted
// macro-block segments
for (i = 0; i < MB_FEATURE_TREE_PROBS; i++) {
int Data = xd->mb_segment_tree_probs[i];
2241224222432244224522462247224822492250225122522253225422552256225722582259226022612262226322642265226622672268226922702271227222732274227522762277227822792280228122822283228422852286228722882289229022912292229322942295229622972298229923002301230223032304230523062307230823092310
if (Data != 255) {
vp8_write_bit(bc, 1);
vp8_write_literal(bc, Data, 8);
} else
vp8_write_bit(bc, 0);
}
// If predictive coding of segment map is enabled send the
// prediction probabilities.
if (pc->temporal_update) {
for (i = 0; i < PREDICTION_PROBS; i++) {
int Data = pc->segment_pred_probs[i];
if (Data != 255) {
vp8_write_bit(bc, 1);
vp8_write_literal(bc, Data, 8);
} else
vp8_write_bit(bc, 0);
}
}
}
}
// Encode the common prediction model status flag probability updates for
// the reference frame
update_refpred_stats(cpi);
if (pc->frame_type != KEY_FRAME) {
for (i = 0; i < PREDICTION_PROBS; i++) {
if (cpi->ref_pred_probs_update[i]) {
vp8_write_bit(bc, 1);
vp8_write_literal(bc, pc->ref_pred_probs[i], 8);
} else
vp8_write_bit(bc, 0);
}
}
#if CONFIG_SUPERBLOCKS
{
/* sb mode probability */
int sb_coded = 256 - (cpi->sb_count << 8) / (((pc->mb_rows + 1) >> 1) * ((pc->mb_cols + 1) >> 1));
if (sb_coded <= 0)
sb_coded = 1;
else if (sb_coded >= 256)
sb_coded = 255;
pc->sb_coded = sb_coded;
vp8_write_literal(bc, pc->sb_coded, 8);
}
#endif
vp8_write_bit(bc, pc->txfm_mode);
// Encode the loop filter level and type
vp8_write_bit(bc, pc->filter_type);
vp8_write_literal(bc, pc->filter_level, 6);
vp8_write_literal(bc, pc->sharpness_level, 3);
// Write out loop filter deltas applied at the MB level based on mode or ref frame (if they are enabled).
vp8_write_bit(bc, (xd->mode_ref_lf_delta_enabled) ? 1 : 0);
if (xd->mode_ref_lf_delta_enabled) {
// Do the deltas need to be updated
int send_update = xd->mode_ref_lf_delta_update;
vp8_write_bit(bc, send_update);
if (send_update) {
int Data;
// Send update
for (i = 0; i < MAX_REF_LF_DELTAS; i++) {
2311231223132314231523162317231823192320232123222323232423252326232723282329233023312332233323342335233623372338233923402341234223432344234523462347234823492350235123522353235423552356235723582359236023612362236323642365236623672368236923702371237223732374237523762377237823792380
Data = xd->ref_lf_deltas[i];
// Frame level data
if (xd->ref_lf_deltas[i] != xd->last_ref_lf_deltas[i]) {
xd->last_ref_lf_deltas[i] = xd->ref_lf_deltas[i];
vp8_write_bit(bc, 1);
if (Data > 0) {
vp8_write_literal(bc, (Data & 0x3F), 6);
vp8_write_bit(bc, 0); // sign
} else {
Data = -Data;
vp8_write_literal(bc, (Data & 0x3F), 6);
vp8_write_bit(bc, 1); // sign
}
} else
vp8_write_bit(bc, 0);
}
// Send update
for (i = 0; i < MAX_MODE_LF_DELTAS; i++) {
Data = xd->mode_lf_deltas[i];
if (xd->mode_lf_deltas[i] != xd->last_mode_lf_deltas[i]) {
xd->last_mode_lf_deltas[i] = xd->mode_lf_deltas[i];
vp8_write_bit(bc, 1);
if (Data > 0) {
vp8_write_literal(bc, (Data & 0x3F), 6);
vp8_write_bit(bc, 0); // sign
} else {
Data = -Data;
vp8_write_literal(bc, (Data & 0x3F), 6);
vp8_write_bit(bc, 1); // sign
}
} else
vp8_write_bit(bc, 0);
}
}
}
// signal here is multi token partition is enabled
// vp8_write_literal(bc, pc->multi_token_partition, 2);
vp8_write_literal(bc, 0, 2);
// Frame Q baseline quantizer index
vp8_write_literal(bc, pc->base_qindex, QINDEX_BITS);
// Transmit Dc, Second order and Uv quantizer delta information
put_delta_q(bc, pc->y1dc_delta_q);
put_delta_q(bc, pc->y2dc_delta_q);
put_delta_q(bc, pc->y2ac_delta_q);
put_delta_q(bc, pc->uvdc_delta_q);
put_delta_q(bc, pc->uvac_delta_q);
// When there is a key frame all reference buffers are updated using the new key frame
if (pc->frame_type != KEY_FRAME) {
// Should the GF or ARF be updated using the transmitted frame or buffer
vp8_write_bit(bc, pc->refresh_golden_frame);
vp8_write_bit(bc, pc->refresh_alt_ref_frame);
// For inter frames the current default behavior is that when
// cm->refresh_golden_frame is set we copy the old GF over to
// the ARF buffer. This is purely an encoder decision at present.
if (pc->refresh_golden_frame)
pc->copy_buffer_to_arf = 2;
// If not being updated from current frame should either GF or ARF be updated from another buffer
if (!pc->refresh_golden_frame)
vp8_write_literal(bc, pc->copy_buffer_to_gf, 2);
2381238223832384238523862387238823892390239123922393239423952396239723982399240024012402240324042405240624072408240924102411241224132414241524162417241824192420242124222423242424252426242724282429243024312432243324342435243624372438243924402441244224432444244524462447244824492450
if (!pc->refresh_alt_ref_frame)
vp8_write_literal(bc, pc->copy_buffer_to_arf, 2);
// Indicate reference frame sign bias for Golden and ARF frames (always 0 for last frame buffer)
vp8_write_bit(bc, pc->ref_frame_sign_bias[GOLDEN_FRAME]);
vp8_write_bit(bc, pc->ref_frame_sign_bias[ALTREF_FRAME]);
// Signal whether to allow high MV precision
vp8_write_bit(bc, (xd->allow_high_precision_mv) ? 1 : 0);
#if CONFIG_SWITCHABLE_INTERP
if (pc->mcomp_filter_type == SWITCHABLE) {
/* Check to see if only one of the filters is actually used */
int count[VP8_SWITCHABLE_FILTERS];
int i, j, c = 0;
for (i = 0; i < VP8_SWITCHABLE_FILTERS; ++i) {
count[i] = 0;
for (j = 0; j <= VP8_SWITCHABLE_FILTERS; ++j) {
count[i] += cpi->switchable_interp_count[j][i];
}
c += (count[i] > 0);
}
if (c == 1) {
/* Only one filter is used. So set the filter at frame level */
for (i = 0; i < VP8_SWITCHABLE_FILTERS; ++i) {
if (count[i]) {
pc->mcomp_filter_type = vp8_switchable_interp[i];
break;
}
}
}
}
// Signal the type of subpel filter to use
vp8_write_bit(bc, (pc->mcomp_filter_type == SWITCHABLE));
if (pc->mcomp_filter_type != SWITCHABLE)
#endif /* CONFIG_SWITCHABLE_INTERP */
vp8_write_literal(bc, (pc->mcomp_filter_type), 2);
}
vp8_write_bit(bc, pc->refresh_entropy_probs);
if (pc->frame_type != KEY_FRAME)
vp8_write_bit(bc, pc->refresh_last_frame);
#ifdef ENTROPY_STATS
if (pc->frame_type == INTER_FRAME)
active_section = 0;
else
active_section = 7;
#endif
vp8_clear_system_state(); // __asm emms;
vp8_copy(cpi->common.fc.pre_coef_probs, cpi->common.fc.coef_probs);
vp8_copy(cpi->common.fc.pre_coef_probs_8x8, cpi->common.fc.coef_probs_8x8);
#if CONFIG_TX16X16 || CONFIG_HYBRIDTRANSFORM16X16
vp8_copy(cpi->common.fc.pre_coef_probs_16x16, cpi->common.fc.coef_probs_16x16);
#endif
vp8_copy(cpi->common.fc.pre_ymode_prob, cpi->common.fc.ymode_prob);
vp8_copy(cpi->common.fc.pre_uv_mode_prob, cpi->common.fc.uv_mode_prob);
vp8_copy(cpi->common.fc.pre_bmode_prob, cpi->common.fc.bmode_prob);
vp8_copy(cpi->common.fc.pre_sub_mv_ref_prob, cpi->common.fc.sub_mv_ref_prob);
vp8_copy(cpi->common.fc.pre_mbsplit_prob, cpi->common.fc.mbsplit_prob);
vp8_copy(cpi->common.fc.pre_i8x8_mode_prob, cpi->common.fc.i8x8_mode_prob);
#if CONFIG_NEWMVENTROPY
cpi->common.fc.pre_nmvc = cpi->common.fc.nmvc;
#else
vp8_copy(cpi->common.fc.pre_mvc, cpi->common.fc.mvc);
vp8_copy(cpi->common.fc.pre_mvc_hp, cpi->common.fc.mvc_hp);
#endif
2451245224532454245524562457245824592460246124622463246424652466246724682469247024712472247324742475247624772478247924802481248224832484248524862487248824892490249124922493249424952496249724982499250025012502250325042505250625072508250925102511251225132514251525162517251825192520
vp8_zero(cpi->sub_mv_ref_count);
vp8_zero(cpi->mbsplit_count);
vp8_zero(cpi->common.fc.mv_ref_ct)
vp8_zero(cpi->common.fc.mv_ref_ct_a)
#if COEFUPDATETYPE == 2
update_coef_probs2(cpi);
#else
update_coef_probs(cpi);
#endif
#ifdef ENTROPY_STATS
active_section = 2;
#endif
// Write out the mb_no_coeff_skip flag
vp8_write_bit(bc, pc->mb_no_coeff_skip);
if (pc->frame_type == KEY_FRAME) {
decide_kf_ymode_entropy(cpi);
write_kfmodes(cpi);
#ifdef ENTROPY_STATS
active_section = 8;
#endif
} else {
pack_inter_mode_mvs(cpi);
vp8_update_mode_context(&cpi->common);
#ifdef ENTROPY_STATS
active_section = 1;
#endif
}
vp8_stop_encode(bc);
oh.first_partition_length_in_bytes = cpi->bc.pos;
/* update frame tag */
{
int v = (oh.first_partition_length_in_bytes << 5) |
(oh.show_frame << 4) |
(oh.version << 1) |
oh.type;
dest[0] = v;
dest[1] = v >> 8;
dest[2] = v >> 16;
}
*size = VP8_HEADER_SIZE + extra_bytes_packed + cpi->bc.pos;
vp8_start_encode(&cpi->bc2, cx_data + bc->pos);
pack_tokens(&cpi->bc2, cpi->tok, cpi->tok_count);
vp8_stop_encode(&cpi->bc2);
*size += cpi->bc2.pos;
}
#ifdef ENTROPY_STATS
void print_tree_update_probs() {
int i, j, k, l;
FILE *f = fopen("coefupdprob.h", "w");
int Sum;
fprintf(f, "\n/* Update probabilities for token entropy tree. */\n\n");
fprintf(f, "const vp8_prob\n"
"vp8_coef_update_probs[BLOCK_TYPES]\n"
2521252225232524252525262527252825292530253125322533253425352536253725382539254025412542254325442545254625472548254925502551255225532554255525562557255825592560256125622563256425652566256725682569257025712572257325742575257625772578257925802581258225832584258525862587258825892590
" [COEF_BANDS]\n"
" [PREV_COEF_CONTEXTS]\n"
" [ENTROPY_NODES] = {\n");
for (i = 0; i < BLOCK_TYPES; i++) {
fprintf(f, " { \n");
for (j = 0; j < COEF_BANDS; j++) {
fprintf(f, " {\n");
for (k = 0; k < PREV_COEF_CONTEXTS; k++) {
fprintf(f, " {");
for (l = 0; l < ENTROPY_NODES; l++) {
Sum = tree_update_hist[i][j][k][l][0] + tree_update_hist[i][j][k][l][1];
if (Sum > 0) {
if (((tree_update_hist[i][j][k][l][0] * 255) / Sum) > 0)
fprintf(f, "%3ld, ", (tree_update_hist[i][j][k][l][0] * 255) / Sum);
else
fprintf(f, "%3ld, ", 1);
} else
fprintf(f, "%3ld, ", 128);
}
fprintf(f, "},\n");
}
fprintf(f, " },\n");
}
fprintf(f, " },\n");
}
fprintf(f, "};\n");
fprintf(f, "const vp8_prob\n"
"vp8_coef_update_probs_8x8[BLOCK_TYPES_8X8]\n"
" [COEF_BANDS]\n"
" [PREV_COEF_CONTEXTS]\n"
" [ENTROPY_NODES] = {\n");
for (i = 0; i < BLOCK_TYPES_8X8; i++) {
fprintf(f, " { \n");
for (j = 0; j < COEF_BANDS; j++) {
fprintf(f, " {\n");
for (k = 0; k < PREV_COEF_CONTEXTS; k++) {
fprintf(f, " {");
for (l = 0; l < MAX_ENTROPY_TOKENS - 1; l++) {
Sum = tree_update_hist_8x8[i][j][k][l][0] + tree_update_hist_8x8[i][j][k][l][1];
if (Sum > 0) {
if (((tree_update_hist_8x8[i][j][k][l][0] * 255) / Sum) > 0)
fprintf(f, "%3ld, ", (tree_update_hist_8x8[i][j][k][l][0] * 255) / Sum);
else
fprintf(f, "%3ld, ", 1);
} else
fprintf(f, "%3ld, ", 128);
}
fprintf(f, "},\n");
}
fprintf(f, " },\n");
}
fprintf(f, " },\n");
}
#if CONFIG_TX16X16 || CONFIG_HYBRIDTRANSFORM16X16
fprintf(f, "const vp8_prob\n"
"vp8_coef_update_probs_16x16[BLOCK_TYPES_16X16]\n"
" [COEF_BANDS]\n"
" [PREV_COEF_CONTEXTS]\n"
" [ENTROPY_NODES] = {\n");
for (i = 0; i < BLOCK_TYPES_16X16; i++) {
fprintf(f, " { \n");
for (j = 0; j < COEF_BANDS; j++) {
fprintf(f, " {\n");
for (k = 0; k < PREV_COEF_CONTEXTS; k++) {
fprintf(f, " {");
for (l = 0; l < MAX_ENTROPY_TOKENS - 1; l++) {
Sum = tree_update_hist_16x16[i][j][k][l][0] + tree_update_hist_16x16[i][j][k][l][1];
if (Sum > 0) {
25912592259325942595259625972598259926002601260226032604260526062607260826092610261126122613261426152616
if (((tree_update_hist_16x16[i][j][k][l][0] * 255) / Sum) > 0)
fprintf(f, "%3ld, ", (tree_update_hist_16x16[i][j][k][l][0] * 255) / Sum);
else
fprintf(f, "%3ld, ", 1);
} else
fprintf(f, "%3ld, ", 128);
}
fprintf(f, "},\n");
}
fprintf(f, " },\n");
}
fprintf(f, " },\n");
}
#endif
fclose(f);
f = fopen("treeupdate.bin", "wb");
fwrite(tree_update_hist, sizeof(tree_update_hist), 1, f);
fwrite(tree_update_hist_8x8, sizeof(tree_update_hist_8x8), 1, f);
#if CONFIG_TX16X16 || CONFIG_HYBRIDTRANSFORM16X16
fwrite(tree_update_hist_16x16, sizeof(tree_update_hist_16x16), 1, f);
#endif
fclose(f);
}
#endif