1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libvpx/vp9/encoder/vp9_bitstream.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,1523 @@
1.4 +/*
1.5 + * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license
1.8 + * that can be found in the LICENSE file in the root of the source
1.9 + * tree. An additional intellectual property rights grant can be found
1.10 + * in the file PATENTS. All contributing project authors may
1.11 + * be found in the AUTHORS file in the root of the source tree.
1.12 + */
1.13 +
1.14 +#include <assert.h>
1.15 +#include <stdio.h>
1.16 +#include <limits.h>
1.17 +
1.18 +#include "vpx/vpx_encoder.h"
1.19 +#include "vpx_mem/vpx_mem.h"
1.20 +
1.21 +#include "vp9/common/vp9_entropymode.h"
1.22 +#include "vp9/common/vp9_entropymv.h"
1.23 +#include "vp9/common/vp9_findnearmv.h"
1.24 +#include "vp9/common/vp9_tile_common.h"
1.25 +#include "vp9/common/vp9_seg_common.h"
1.26 +#include "vp9/common/vp9_pred_common.h"
1.27 +#include "vp9/common/vp9_entropy.h"
1.28 +#include "vp9/common/vp9_mvref_common.h"
1.29 +#include "vp9/common/vp9_treecoder.h"
1.30 +#include "vp9/common/vp9_systemdependent.h"
1.31 +#include "vp9/common/vp9_pragmas.h"
1.32 +
1.33 +#include "vp9/encoder/vp9_mcomp.h"
1.34 +#include "vp9/encoder/vp9_encodemv.h"
1.35 +#include "vp9/encoder/vp9_bitstream.h"
1.36 +#include "vp9/encoder/vp9_segmentation.h"
1.37 +#include "vp9/encoder/vp9_subexp.h"
1.38 +#include "vp9/encoder/vp9_write_bit_buffer.h"
1.39 +
1.40 +
1.41 +#if defined(SECTIONBITS_OUTPUT)
1.42 +unsigned __int64 Sectionbits[500];
1.43 +#endif
1.44 +
1.45 +#ifdef ENTROPY_STATS
1.46 +int intra_mode_stats[INTRA_MODES]
1.47 + [INTRA_MODES]
1.48 + [INTRA_MODES];
1.49 +vp9_coeff_stats tree_update_hist[TX_SIZES][BLOCK_TYPES];
1.50 +
1.51 +extern unsigned int active_section;
1.52 +#endif
1.53 +
1.54 +
1.55 +#ifdef MODE_STATS
1.56 +int64_t tx_count_32x32p_stats[TX_SIZE_CONTEXTS][TX_SIZES];
1.57 +int64_t tx_count_16x16p_stats[TX_SIZE_CONTEXTS][TX_SIZES - 1];
1.58 +int64_t tx_count_8x8p_stats[TX_SIZE_CONTEXTS][TX_SIZES - 2];
1.59 +int64_t switchable_interp_stats[SWITCHABLE_FILTER_CONTEXTS][SWITCHABLE_FILTERS];
1.60 +
1.61 +void init_tx_count_stats() {
1.62 + vp9_zero(tx_count_32x32p_stats);
1.63 + vp9_zero(tx_count_16x16p_stats);
1.64 + vp9_zero(tx_count_8x8p_stats);
1.65 +}
1.66 +
1.67 +void init_switchable_interp_stats() {
1.68 + vp9_zero(switchable_interp_stats);
1.69 +}
1.70 +
1.71 +static void update_tx_count_stats(VP9_COMMON *cm) {
1.72 + int i, j;
1.73 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.74 + for (j = 0; j < TX_SIZES; j++) {
1.75 + tx_count_32x32p_stats[i][j] += cm->fc.tx_count_32x32p[i][j];
1.76 + }
1.77 + }
1.78 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.79 + for (j = 0; j < TX_SIZES - 1; j++) {
1.80 + tx_count_16x16p_stats[i][j] += cm->fc.tx_count_16x16p[i][j];
1.81 + }
1.82 + }
1.83 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.84 + for (j = 0; j < TX_SIZES - 2; j++) {
1.85 + tx_count_8x8p_stats[i][j] += cm->fc.tx_count_8x8p[i][j];
1.86 + }
1.87 + }
1.88 +}
1.89 +
1.90 +static void update_switchable_interp_stats(VP9_COMMON *cm) {
1.91 + int i, j;
1.92 + for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i)
1.93 + for (j = 0; j < SWITCHABLE_FILTERS; ++j)
1.94 + switchable_interp_stats[i][j] += cm->fc.switchable_interp_count[i][j];
1.95 +}
1.96 +
1.97 +void write_tx_count_stats() {
1.98 + int i, j;
1.99 + FILE *fp = fopen("tx_count.bin", "wb");
1.100 + fwrite(tx_count_32x32p_stats, sizeof(tx_count_32x32p_stats), 1, fp);
1.101 + fwrite(tx_count_16x16p_stats, sizeof(tx_count_16x16p_stats), 1, fp);
1.102 + fwrite(tx_count_8x8p_stats, sizeof(tx_count_8x8p_stats), 1, fp);
1.103 + fclose(fp);
1.104 +
1.105 + printf(
1.106 + "vp9_default_tx_count_32x32p[TX_SIZE_CONTEXTS][TX_SIZES] = {\n");
1.107 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.108 + printf(" { ");
1.109 + for (j = 0; j < TX_SIZES; j++) {
1.110 + printf("%"PRId64", ", tx_count_32x32p_stats[i][j]);
1.111 + }
1.112 + printf("},\n");
1.113 + }
1.114 + printf("};\n");
1.115 + printf(
1.116 + "vp9_default_tx_count_16x16p[TX_SIZE_CONTEXTS][TX_SIZES-1] = {\n");
1.117 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.118 + printf(" { ");
1.119 + for (j = 0; j < TX_SIZES - 1; j++) {
1.120 + printf("%"PRId64", ", tx_count_16x16p_stats[i][j]);
1.121 + }
1.122 + printf("},\n");
1.123 + }
1.124 + printf("};\n");
1.125 + printf(
1.126 + "vp9_default_tx_count_8x8p[TX_SIZE_CONTEXTS][TX_SIZES-2] = {\n");
1.127 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.128 + printf(" { ");
1.129 + for (j = 0; j < TX_SIZES - 2; j++) {
1.130 + printf("%"PRId64", ", tx_count_8x8p_stats[i][j]);
1.131 + }
1.132 + printf("},\n");
1.133 + }
1.134 + printf("};\n");
1.135 +}
1.136 +
1.137 +void write_switchable_interp_stats() {
1.138 + int i, j;
1.139 + FILE *fp = fopen("switchable_interp.bin", "wb");
1.140 + fwrite(switchable_interp_stats, sizeof(switchable_interp_stats), 1, fp);
1.141 + fclose(fp);
1.142 +
1.143 + printf(
1.144 + "vp9_default_switchable_filter_count[SWITCHABLE_FILTER_CONTEXTS]"
1.145 + "[SWITCHABLE_FILTERS] = {\n");
1.146 + for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++) {
1.147 + printf(" { ");
1.148 + for (j = 0; j < SWITCHABLE_FILTERS; j++) {
1.149 + printf("%"PRId64", ", switchable_interp_stats[i][j]);
1.150 + }
1.151 + printf("},\n");
1.152 + }
1.153 + printf("};\n");
1.154 +}
1.155 +#endif
1.156 +
1.157 +static INLINE void write_be32(uint8_t *p, int value) {
1.158 + p[0] = value >> 24;
1.159 + p[1] = value >> 16;
1.160 + p[2] = value >> 8;
1.161 + p[3] = value;
1.162 +}
1.163 +
1.164 +void vp9_encode_unsigned_max(struct vp9_write_bit_buffer *wb,
1.165 + int data, int max) {
1.166 + vp9_wb_write_literal(wb, data, get_unsigned_bits(max));
1.167 +}
1.168 +
1.169 +static void update_mode(vp9_writer *w, int n, vp9_tree tree,
1.170 + vp9_prob Pcur[/* n-1 */],
1.171 + unsigned int bct[/* n-1 */][2],
1.172 + const unsigned int num_events[/* n */]) {
1.173 + int i = 0;
1.174 +
1.175 + vp9_tree_probs_from_distribution(tree, bct, num_events);
1.176 + for (i = 0; i < n - 1; ++i)
1.177 + vp9_cond_prob_diff_update(w, &Pcur[i], bct[i]);
1.178 +}
1.179 +
1.180 +static void update_mbintra_mode_probs(VP9_COMP* const cpi,
1.181 + vp9_writer* const bc) {
1.182 + VP9_COMMON *const cm = &cpi->common;
1.183 + int j;
1.184 + unsigned int bct[INTRA_MODES - 1][2];
1.185 +
1.186 + for (j = 0; j < BLOCK_SIZE_GROUPS; j++)
1.187 + update_mode(bc, INTRA_MODES, vp9_intra_mode_tree,
1.188 + cm->fc.y_mode_prob[j], bct,
1.189 + (unsigned int *)cpi->y_mode_count[j]);
1.190 +}
1.191 +
1.192 +static void write_selected_tx_size(const VP9_COMP *cpi, MODE_INFO *m,
1.193 + TX_SIZE tx_size, BLOCK_SIZE bsize,
1.194 + vp9_writer *w) {
1.195 + const TX_SIZE max_tx_size = max_txsize_lookup[bsize];
1.196 + const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
1.197 + const vp9_prob *const tx_probs = get_tx_probs2(max_tx_size, xd,
1.198 + &cpi->common.fc.tx_probs);
1.199 + vp9_write(w, tx_size != TX_4X4, tx_probs[0]);
1.200 + if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) {
1.201 + vp9_write(w, tx_size != TX_8X8, tx_probs[1]);
1.202 + if (tx_size != TX_8X8 && max_tx_size >= TX_32X32)
1.203 + vp9_write(w, tx_size != TX_16X16, tx_probs[2]);
1.204 + }
1.205 +}
1.206 +
1.207 +static int write_skip_coeff(const VP9_COMP *cpi, int segment_id, MODE_INFO *m,
1.208 + vp9_writer *w) {
1.209 + const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
1.210 + if (vp9_segfeature_active(&cpi->common.seg, segment_id, SEG_LVL_SKIP)) {
1.211 + return 1;
1.212 + } else {
1.213 + const int skip_coeff = m->mbmi.skip_coeff;
1.214 + vp9_write(w, skip_coeff, vp9_get_pred_prob_mbskip(&cpi->common, xd));
1.215 + return skip_coeff;
1.216 + }
1.217 +}
1.218 +
1.219 +void vp9_update_skip_probs(VP9_COMP *cpi, vp9_writer *w) {
1.220 + VP9_COMMON *cm = &cpi->common;
1.221 + int k;
1.222 +
1.223 + for (k = 0; k < MBSKIP_CONTEXTS; ++k)
1.224 + vp9_cond_prob_diff_update(w, &cm->fc.mbskip_probs[k], cm->counts.mbskip[k]);
1.225 +}
1.226 +
1.227 +static void write_intra_mode(vp9_writer *bc, int m, const vp9_prob *p) {
1.228 + write_token(bc, vp9_intra_mode_tree, p, vp9_intra_mode_encodings + m);
1.229 +}
1.230 +
1.231 +static void update_switchable_interp_probs(VP9_COMP *cpi, vp9_writer *w) {
1.232 + VP9_COMMON *const cm = &cpi->common;
1.233 + unsigned int branch_ct[SWITCHABLE_FILTERS - 1][2];
1.234 + int i, j;
1.235 + for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j) {
1.236 + vp9_tree_probs_from_distribution(vp9_switchable_interp_tree, branch_ct,
1.237 + cm->counts.switchable_interp[j]);
1.238 +
1.239 + for (i = 0; i < SWITCHABLE_FILTERS - 1; ++i)
1.240 + vp9_cond_prob_diff_update(w, &cm->fc.switchable_interp_prob[j][i],
1.241 + branch_ct[i]);
1.242 + }
1.243 +
1.244 +#ifdef MODE_STATS
1.245 + if (!cpi->dummy_packing)
1.246 + update_switchable_interp_stats(cm);
1.247 +#endif
1.248 +}
1.249 +
1.250 +static void update_inter_mode_probs(VP9_COMMON *cm, vp9_writer *w) {
1.251 + int i, j;
1.252 +
1.253 + for (i = 0; i < INTER_MODE_CONTEXTS; ++i) {
1.254 + unsigned int branch_ct[INTER_MODES - 1][2];
1.255 + vp9_tree_probs_from_distribution(vp9_inter_mode_tree, branch_ct,
1.256 + cm->counts.inter_mode[i]);
1.257 +
1.258 + for (j = 0; j < INTER_MODES - 1; ++j)
1.259 + vp9_cond_prob_diff_update(w, &cm->fc.inter_mode_probs[i][j],
1.260 + branch_ct[j]);
1.261 + }
1.262 +}
1.263 +
1.264 +static void pack_mb_tokens(vp9_writer* const w,
1.265 + TOKENEXTRA **tp,
1.266 + const TOKENEXTRA *const stop) {
1.267 + TOKENEXTRA *p = *tp;
1.268 +
1.269 + while (p < stop && p->token != EOSB_TOKEN) {
1.270 + const int t = p->token;
1.271 + const struct vp9_token *const a = &vp9_coef_encodings[t];
1.272 + const vp9_extra_bit *const b = &vp9_extra_bits[t];
1.273 + int i = 0;
1.274 + const vp9_prob *pp;
1.275 + int v = a->value;
1.276 + int n = a->len;
1.277 + vp9_prob probs[ENTROPY_NODES];
1.278 +
1.279 + if (t >= TWO_TOKEN) {
1.280 + vp9_model_to_full_probs(p->context_tree, probs);
1.281 + pp = probs;
1.282 + } else {
1.283 + pp = p->context_tree;
1.284 + }
1.285 + assert(pp != 0);
1.286 +
1.287 + /* skip one or two nodes */
1.288 + if (p->skip_eob_node) {
1.289 + n -= p->skip_eob_node;
1.290 + i = 2 * p->skip_eob_node;
1.291 + }
1.292 +
1.293 + do {
1.294 + const int bb = (v >> --n) & 1;
1.295 + vp9_write(w, bb, pp[i >> 1]);
1.296 + i = vp9_coef_tree[i + bb];
1.297 + } while (n);
1.298 +
1.299 + if (b->base_val) {
1.300 + const int e = p->extra, l = b->len;
1.301 +
1.302 + if (l) {
1.303 + const unsigned char *pb = b->prob;
1.304 + int v = e >> 1;
1.305 + int n = l; /* number of bits in v, assumed nonzero */
1.306 + int i = 0;
1.307 +
1.308 + do {
1.309 + const int bb = (v >> --n) & 1;
1.310 + vp9_write(w, bb, pb[i >> 1]);
1.311 + i = b->tree[i + bb];
1.312 + } while (n);
1.313 + }
1.314 +
1.315 + vp9_write_bit(w, e & 1);
1.316 + }
1.317 + ++p;
1.318 + }
1.319 +
1.320 + *tp = p + (p->token == EOSB_TOKEN);
1.321 +}
1.322 +
1.323 +static void write_sb_mv_ref(vp9_writer *w, MB_PREDICTION_MODE mode,
1.324 + const vp9_prob *p) {
1.325 + assert(is_inter_mode(mode));
1.326 + write_token(w, vp9_inter_mode_tree, p,
1.327 + &vp9_inter_mode_encodings[INTER_OFFSET(mode)]);
1.328 +}
1.329 +
1.330 +
1.331 +static void write_segment_id(vp9_writer *w, const struct segmentation *seg,
1.332 + int segment_id) {
1.333 + if (seg->enabled && seg->update_map)
1.334 + treed_write(w, vp9_segment_tree, seg->tree_probs, segment_id, 3);
1.335 +}
1.336 +
1.337 +// This function encodes the reference frame
1.338 +static void encode_ref_frame(VP9_COMP *cpi, vp9_writer *bc) {
1.339 + VP9_COMMON *const cm = &cpi->common;
1.340 + MACROBLOCK *const x = &cpi->mb;
1.341 + MACROBLOCKD *const xd = &x->e_mbd;
1.342 + MB_MODE_INFO *mi = &xd->mi_8x8[0]->mbmi;
1.343 + const int segment_id = mi->segment_id;
1.344 + int seg_ref_active = vp9_segfeature_active(&cm->seg, segment_id,
1.345 + SEG_LVL_REF_FRAME);
1.346 + // If segment level coding of this signal is disabled...
1.347 + // or the segment allows multiple reference frame options
1.348 + if (!seg_ref_active) {
1.349 + // does the feature use compound prediction or not
1.350 + // (if not specified at the frame/segment level)
1.351 + if (cm->comp_pred_mode == HYBRID_PREDICTION) {
1.352 + vp9_write(bc, mi->ref_frame[1] > INTRA_FRAME,
1.353 + vp9_get_pred_prob_comp_inter_inter(cm, xd));
1.354 + } else {
1.355 + assert((mi->ref_frame[1] <= INTRA_FRAME) ==
1.356 + (cm->comp_pred_mode == SINGLE_PREDICTION_ONLY));
1.357 + }
1.358 +
1.359 + if (mi->ref_frame[1] > INTRA_FRAME) {
1.360 + vp9_write(bc, mi->ref_frame[0] == GOLDEN_FRAME,
1.361 + vp9_get_pred_prob_comp_ref_p(cm, xd));
1.362 + } else {
1.363 + vp9_write(bc, mi->ref_frame[0] != LAST_FRAME,
1.364 + vp9_get_pred_prob_single_ref_p1(cm, xd));
1.365 + if (mi->ref_frame[0] != LAST_FRAME)
1.366 + vp9_write(bc, mi->ref_frame[0] != GOLDEN_FRAME,
1.367 + vp9_get_pred_prob_single_ref_p2(cm, xd));
1.368 + }
1.369 + } else {
1.370 + assert(mi->ref_frame[1] <= INTRA_FRAME);
1.371 + assert(vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) ==
1.372 + mi->ref_frame[0]);
1.373 + }
1.374 +
1.375 + // If using the prediction model we have nothing further to do because
1.376 + // the reference frame is fully coded by the segment.
1.377 +}
1.378 +
1.379 +static void pack_inter_mode_mvs(VP9_COMP *cpi, MODE_INFO *m, vp9_writer *bc) {
1.380 + VP9_COMMON *const cm = &cpi->common;
1.381 + const nmv_context *nmvc = &cm->fc.nmvc;
1.382 + MACROBLOCK *const x = &cpi->mb;
1.383 + MACROBLOCKD *const xd = &x->e_mbd;
1.384 + struct segmentation *seg = &cm->seg;
1.385 + MB_MODE_INFO *const mi = &m->mbmi;
1.386 + const MV_REFERENCE_FRAME rf = mi->ref_frame[0];
1.387 + const MB_PREDICTION_MODE mode = mi->mode;
1.388 + const int segment_id = mi->segment_id;
1.389 + int skip_coeff;
1.390 + const BLOCK_SIZE bsize = mi->sb_type;
1.391 + const int allow_hp = cm->allow_high_precision_mv;
1.392 +
1.393 +#ifdef ENTROPY_STATS
1.394 + active_section = 9;
1.395 +#endif
1.396 +
1.397 + if (seg->update_map) {
1.398 + if (seg->temporal_update) {
1.399 + const int pred_flag = mi->seg_id_predicted;
1.400 + vp9_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd);
1.401 + vp9_write(bc, pred_flag, pred_prob);
1.402 + if (!pred_flag)
1.403 + write_segment_id(bc, seg, segment_id);
1.404 + } else {
1.405 + write_segment_id(bc, seg, segment_id);
1.406 + }
1.407 + }
1.408 +
1.409 + skip_coeff = write_skip_coeff(cpi, segment_id, m, bc);
1.410 +
1.411 + if (!vp9_segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME))
1.412 + vp9_write(bc, rf != INTRA_FRAME,
1.413 + vp9_get_pred_prob_intra_inter(cm, xd));
1.414 +
1.415 + if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT &&
1.416 + !(rf != INTRA_FRAME &&
1.417 + (skip_coeff || vp9_segfeature_active(seg, segment_id, SEG_LVL_SKIP)))) {
1.418 + write_selected_tx_size(cpi, m, mi->tx_size, bsize, bc);
1.419 + }
1.420 +
1.421 + if (rf == INTRA_FRAME) {
1.422 +#ifdef ENTROPY_STATS
1.423 + active_section = 6;
1.424 +#endif
1.425 +
1.426 + if (bsize >= BLOCK_8X8) {
1.427 + write_intra_mode(bc, mode, cm->fc.y_mode_prob[size_group_lookup[bsize]]);
1.428 + } else {
1.429 + int idx, idy;
1.430 + const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
1.431 + const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
1.432 + for (idy = 0; idy < 2; idy += num_4x4_blocks_high) {
1.433 + for (idx = 0; idx < 2; idx += num_4x4_blocks_wide) {
1.434 + const MB_PREDICTION_MODE bm = m->bmi[idy * 2 + idx].as_mode;
1.435 + write_intra_mode(bc, bm, cm->fc.y_mode_prob[0]);
1.436 + }
1.437 + }
1.438 + }
1.439 + write_intra_mode(bc, mi->uv_mode, cm->fc.uv_mode_prob[mode]);
1.440 + } else {
1.441 + vp9_prob *mv_ref_p;
1.442 + encode_ref_frame(cpi, bc);
1.443 + mv_ref_p = cpi->common.fc.inter_mode_probs[mi->mode_context[rf]];
1.444 +
1.445 +#ifdef ENTROPY_STATS
1.446 + active_section = 3;
1.447 +#endif
1.448 +
1.449 + // If segment skip is not enabled code the mode.
1.450 + if (!vp9_segfeature_active(seg, segment_id, SEG_LVL_SKIP)) {
1.451 + if (bsize >= BLOCK_8X8) {
1.452 + write_sb_mv_ref(bc, mode, mv_ref_p);
1.453 + ++cm->counts.inter_mode[mi->mode_context[rf]]
1.454 + [INTER_OFFSET(mode)];
1.455 + }
1.456 + }
1.457 +
1.458 + if (cm->mcomp_filter_type == SWITCHABLE) {
1.459 + const int ctx = vp9_get_pred_context_switchable_interp(xd);
1.460 + write_token(bc, vp9_switchable_interp_tree,
1.461 + cm->fc.switchable_interp_prob[ctx],
1.462 + &vp9_switchable_interp_encodings[mi->interp_filter]);
1.463 + } else {
1.464 + assert(mi->interp_filter == cm->mcomp_filter_type);
1.465 + }
1.466 +
1.467 + if (bsize < BLOCK_8X8) {
1.468 + const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
1.469 + const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
1.470 + int idx, idy;
1.471 + for (idy = 0; idy < 2; idy += num_4x4_blocks_high) {
1.472 + for (idx = 0; idx < 2; idx += num_4x4_blocks_wide) {
1.473 + const int j = idy * 2 + idx;
1.474 + const MB_PREDICTION_MODE blockmode = m->bmi[j].as_mode;
1.475 + write_sb_mv_ref(bc, blockmode, mv_ref_p);
1.476 + ++cm->counts.inter_mode[mi->mode_context[rf]]
1.477 + [INTER_OFFSET(blockmode)];
1.478 +
1.479 + if (blockmode == NEWMV) {
1.480 +#ifdef ENTROPY_STATS
1.481 + active_section = 11;
1.482 +#endif
1.483 + vp9_encode_mv(cpi, bc, &m->bmi[j].as_mv[0].as_mv,
1.484 + &mi->best_mv[0].as_mv, nmvc, allow_hp);
1.485 +
1.486 + if (has_second_ref(mi))
1.487 + vp9_encode_mv(cpi, bc, &m->bmi[j].as_mv[1].as_mv,
1.488 + &mi->best_mv[1].as_mv, nmvc, allow_hp);
1.489 + }
1.490 + }
1.491 + }
1.492 + } else if (mode == NEWMV) {
1.493 +#ifdef ENTROPY_STATS
1.494 + active_section = 5;
1.495 +#endif
1.496 + vp9_encode_mv(cpi, bc, &mi->mv[0].as_mv,
1.497 + &mi->best_mv[0].as_mv, nmvc, allow_hp);
1.498 +
1.499 + if (has_second_ref(mi))
1.500 + vp9_encode_mv(cpi, bc, &mi->mv[1].as_mv,
1.501 + &mi->best_mv[1].as_mv, nmvc, allow_hp);
1.502 + }
1.503 + }
1.504 +}
1.505 +
1.506 +static void write_mb_modes_kf(const VP9_COMP *cpi, MODE_INFO **mi_8x8,
1.507 + vp9_writer *bc) {
1.508 + const VP9_COMMON *const cm = &cpi->common;
1.509 + const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
1.510 + const struct segmentation *const seg = &cm->seg;
1.511 + MODE_INFO *m = mi_8x8[0];
1.512 + const int ym = m->mbmi.mode;
1.513 + const int segment_id = m->mbmi.segment_id;
1.514 + MODE_INFO *above_mi = mi_8x8[-xd->mode_info_stride];
1.515 + MODE_INFO *left_mi = xd->left_available ? mi_8x8[-1] : NULL;
1.516 +
1.517 + if (seg->update_map)
1.518 + write_segment_id(bc, seg, m->mbmi.segment_id);
1.519 +
1.520 + write_skip_coeff(cpi, segment_id, m, bc);
1.521 +
1.522 + if (m->mbmi.sb_type >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT)
1.523 + write_selected_tx_size(cpi, m, m->mbmi.tx_size, m->mbmi.sb_type, bc);
1.524 +
1.525 + if (m->mbmi.sb_type >= BLOCK_8X8) {
1.526 + const MB_PREDICTION_MODE A = above_block_mode(m, above_mi, 0);
1.527 + const MB_PREDICTION_MODE L = left_block_mode(m, left_mi, 0);
1.528 + write_intra_mode(bc, ym, vp9_kf_y_mode_prob[A][L]);
1.529 + } else {
1.530 + int idx, idy;
1.531 + const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[m->mbmi.sb_type];
1.532 + const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[m->mbmi.sb_type];
1.533 + for (idy = 0; idy < 2; idy += num_4x4_blocks_high) {
1.534 + for (idx = 0; idx < 2; idx += num_4x4_blocks_wide) {
1.535 + int i = idy * 2 + idx;
1.536 + const MB_PREDICTION_MODE A = above_block_mode(m, above_mi, i);
1.537 + const MB_PREDICTION_MODE L = left_block_mode(m, left_mi, i);
1.538 + const int bm = m->bmi[i].as_mode;
1.539 +#ifdef ENTROPY_STATS
1.540 + ++intra_mode_stats[A][L][bm];
1.541 +#endif
1.542 + write_intra_mode(bc, bm, vp9_kf_y_mode_prob[A][L]);
1.543 + }
1.544 + }
1.545 + }
1.546 +
1.547 + write_intra_mode(bc, m->mbmi.uv_mode, vp9_kf_uv_mode_prob[ym]);
1.548 +}
1.549 +
1.550 +static void write_modes_b(VP9_COMP *cpi, const TileInfo *const tile,
1.551 + vp9_writer *w, TOKENEXTRA **tok, TOKENEXTRA *tok_end,
1.552 + int mi_row, int mi_col) {
1.553 + VP9_COMMON *const cm = &cpi->common;
1.554 + MACROBLOCKD *const xd = &cpi->mb.e_mbd;
1.555 + MODE_INFO *m;
1.556 +
1.557 + xd->mi_8x8 = cm->mi_grid_visible + (mi_row * cm->mode_info_stride + mi_col);
1.558 + m = xd->mi_8x8[0];
1.559 +
1.560 + set_mi_row_col(xd, tile,
1.561 + mi_row, num_8x8_blocks_high_lookup[m->mbmi.sb_type],
1.562 + mi_col, num_8x8_blocks_wide_lookup[m->mbmi.sb_type],
1.563 + cm->mi_rows, cm->mi_cols);
1.564 + if (frame_is_intra_only(cm)) {
1.565 + write_mb_modes_kf(cpi, xd->mi_8x8, w);
1.566 +#ifdef ENTROPY_STATS
1.567 + active_section = 8;
1.568 +#endif
1.569 + } else {
1.570 + pack_inter_mode_mvs(cpi, m, w);
1.571 +#ifdef ENTROPY_STATS
1.572 + active_section = 1;
1.573 +#endif
1.574 + }
1.575 +
1.576 + assert(*tok < tok_end);
1.577 + pack_mb_tokens(w, tok, tok_end);
1.578 +}
1.579 +
1.580 +static void write_partition(VP9_COMP *cpi, int hbs, int mi_row, int mi_col,
1.581 + PARTITION_TYPE p, BLOCK_SIZE bsize, vp9_writer *w) {
1.582 + VP9_COMMON *const cm = &cpi->common;
1.583 + const int ctx = partition_plane_context(cpi->above_seg_context,
1.584 + cpi->left_seg_context,
1.585 + mi_row, mi_col, bsize);
1.586 + const vp9_prob *const probs = get_partition_probs(cm, ctx);
1.587 + const int has_rows = (mi_row + hbs) < cm->mi_rows;
1.588 + const int has_cols = (mi_col + hbs) < cm->mi_cols;
1.589 +
1.590 + if (has_rows && has_cols) {
1.591 + write_token(w, vp9_partition_tree, probs, &vp9_partition_encodings[p]);
1.592 + } else if (!has_rows && has_cols) {
1.593 + assert(p == PARTITION_SPLIT || p == PARTITION_HORZ);
1.594 + vp9_write(w, p == PARTITION_SPLIT, probs[1]);
1.595 + } else if (has_rows && !has_cols) {
1.596 + assert(p == PARTITION_SPLIT || p == PARTITION_VERT);
1.597 + vp9_write(w, p == PARTITION_SPLIT, probs[2]);
1.598 + } else {
1.599 + assert(p == PARTITION_SPLIT);
1.600 + }
1.601 +}
1.602 +
1.603 +static void write_modes_sb(VP9_COMP *cpi, const TileInfo *const tile,
1.604 + vp9_writer *w, TOKENEXTRA **tok, TOKENEXTRA *tok_end,
1.605 + int mi_row, int mi_col, BLOCK_SIZE bsize) {
1.606 + VP9_COMMON *const cm = &cpi->common;
1.607 + const int bsl = b_width_log2(bsize);
1.608 + const int bs = (1 << bsl) / 4;
1.609 + PARTITION_TYPE partition;
1.610 + BLOCK_SIZE subsize;
1.611 + MODE_INFO *m = cm->mi_grid_visible[mi_row * cm->mode_info_stride + mi_col];
1.612 +
1.613 + if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
1.614 + return;
1.615 +
1.616 + partition = partition_lookup[bsl][m->mbmi.sb_type];
1.617 + write_partition(cpi, bs, mi_row, mi_col, partition, bsize, w);
1.618 + subsize = get_subsize(bsize, partition);
1.619 + if (subsize < BLOCK_8X8) {
1.620 + write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col);
1.621 + } else {
1.622 + switch (partition) {
1.623 + case PARTITION_NONE:
1.624 + write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col);
1.625 + break;
1.626 + case PARTITION_HORZ:
1.627 + write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col);
1.628 + if (mi_row + bs < cm->mi_rows)
1.629 + write_modes_b(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col);
1.630 + break;
1.631 + case PARTITION_VERT:
1.632 + write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col);
1.633 + if (mi_col + bs < cm->mi_cols)
1.634 + write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col + bs);
1.635 + break;
1.636 + case PARTITION_SPLIT:
1.637 + write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col, subsize);
1.638 + write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col + bs,
1.639 + subsize);
1.640 + write_modes_sb(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col,
1.641 + subsize);
1.642 + write_modes_sb(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col + bs,
1.643 + subsize);
1.644 + break;
1.645 + default:
1.646 + assert(0);
1.647 + }
1.648 + }
1.649 +
1.650 + // update partition context
1.651 + if (bsize >= BLOCK_8X8 &&
1.652 + (bsize == BLOCK_8X8 || partition != PARTITION_SPLIT))
1.653 + update_partition_context(cpi->above_seg_context, cpi->left_seg_context,
1.654 + mi_row, mi_col, subsize, bsize);
1.655 +}
1.656 +
1.657 +static void write_modes(VP9_COMP *cpi, const TileInfo *const tile,
1.658 + vp9_writer *w, TOKENEXTRA **tok, TOKENEXTRA *tok_end) {
1.659 + int mi_row, mi_col;
1.660 +
1.661 + for (mi_row = tile->mi_row_start; mi_row < tile->mi_row_end;
1.662 + mi_row += MI_BLOCK_SIZE) {
1.663 + vp9_zero(cpi->left_seg_context);
1.664 + for (mi_col = tile->mi_col_start; mi_col < tile->mi_col_end;
1.665 + mi_col += MI_BLOCK_SIZE)
1.666 + write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col, BLOCK_64X64);
1.667 + }
1.668 +}
1.669 +
1.670 +static void build_tree_distribution(VP9_COMP *cpi, TX_SIZE tx_size) {
1.671 + vp9_coeff_probs_model *coef_probs = cpi->frame_coef_probs[tx_size];
1.672 + vp9_coeff_count *coef_counts = cpi->coef_counts[tx_size];
1.673 + unsigned int (*eob_branch_ct)[REF_TYPES][COEF_BANDS][PREV_COEF_CONTEXTS] =
1.674 + cpi->common.counts.eob_branch[tx_size];
1.675 + vp9_coeff_stats *coef_branch_ct = cpi->frame_branch_ct[tx_size];
1.676 + int i, j, k, l, m;
1.677 +
1.678 + for (i = 0; i < BLOCK_TYPES; ++i) {
1.679 + for (j = 0; j < REF_TYPES; ++j) {
1.680 + for (k = 0; k < COEF_BANDS; ++k) {
1.681 + for (l = 0; l < PREV_COEF_CONTEXTS; ++l) {
1.682 + if (l >= 3 && k == 0)
1.683 + continue;
1.684 + vp9_tree_probs_from_distribution(vp9_coef_tree,
1.685 + coef_branch_ct[i][j][k][l],
1.686 + coef_counts[i][j][k][l]);
1.687 + coef_branch_ct[i][j][k][l][0][1] = eob_branch_ct[i][j][k][l] -
1.688 + coef_branch_ct[i][j][k][l][0][0];
1.689 + for (m = 0; m < UNCONSTRAINED_NODES; ++m)
1.690 + coef_probs[i][j][k][l][m] = get_binary_prob(
1.691 + coef_branch_ct[i][j][k][l][m][0],
1.692 + coef_branch_ct[i][j][k][l][m][1]);
1.693 +#ifdef ENTROPY_STATS
1.694 + if (!cpi->dummy_packing) {
1.695 + int t;
1.696 + for (t = 0; t < MAX_ENTROPY_TOKENS; ++t)
1.697 + context_counters[tx_size][i][j][k][l][t] +=
1.698 + coef_counts[i][j][k][l][t];
1.699 + context_counters[tx_size][i][j][k][l][MAX_ENTROPY_TOKENS] +=
1.700 + eob_branch_ct[i][j][k][l];
1.701 + }
1.702 +#endif
1.703 + }
1.704 + }
1.705 + }
1.706 + }
1.707 +}
1.708 +
1.709 +static void build_coeff_contexts(VP9_COMP *cpi) {
1.710 + TX_SIZE t;
1.711 + for (t = TX_4X4; t <= TX_32X32; t++)
1.712 + build_tree_distribution(cpi, t);
1.713 +}
1.714 +
1.715 +static void update_coef_probs_common(vp9_writer* const bc, VP9_COMP *cpi,
1.716 + TX_SIZE tx_size) {
1.717 + vp9_coeff_probs_model *new_frame_coef_probs = cpi->frame_coef_probs[tx_size];
1.718 + vp9_coeff_probs_model *old_frame_coef_probs =
1.719 + cpi->common.fc.coef_probs[tx_size];
1.720 + vp9_coeff_stats *frame_branch_ct = cpi->frame_branch_ct[tx_size];
1.721 + const vp9_prob upd = DIFF_UPDATE_PROB;
1.722 + const int entropy_nodes_update = UNCONSTRAINED_NODES;
1.723 + int i, j, k, l, t;
1.724 + switch (cpi->sf.use_fast_coef_updates) {
1.725 + case 0: {
1.726 + /* dry run to see if there is any udpate at all needed */
1.727 + int savings = 0;
1.728 + int update[2] = {0, 0};
1.729 + for (i = 0; i < BLOCK_TYPES; ++i) {
1.730 + for (j = 0; j < REF_TYPES; ++j) {
1.731 + for (k = 0; k < COEF_BANDS; ++k) {
1.732 + for (l = 0; l < PREV_COEF_CONTEXTS; ++l) {
1.733 + for (t = 0; t < entropy_nodes_update; ++t) {
1.734 + vp9_prob newp = new_frame_coef_probs[i][j][k][l][t];
1.735 + const vp9_prob oldp = old_frame_coef_probs[i][j][k][l][t];
1.736 + int s;
1.737 + int u = 0;
1.738 +
1.739 + if (l >= 3 && k == 0)
1.740 + continue;
1.741 + if (t == PIVOT_NODE)
1.742 + s = vp9_prob_diff_update_savings_search_model(
1.743 + frame_branch_ct[i][j][k][l][0],
1.744 + old_frame_coef_probs[i][j][k][l], &newp, upd, i, j);
1.745 + else
1.746 + s = vp9_prob_diff_update_savings_search(
1.747 + frame_branch_ct[i][j][k][l][t], oldp, &newp, upd);
1.748 + if (s > 0 && newp != oldp)
1.749 + u = 1;
1.750 + if (u)
1.751 + savings += s - (int)(vp9_cost_zero(upd));
1.752 + else
1.753 + savings -= (int)(vp9_cost_zero(upd));
1.754 + update[u]++;
1.755 + }
1.756 + }
1.757 + }
1.758 + }
1.759 + }
1.760 +
1.761 + // printf("Update %d %d, savings %d\n", update[0], update[1], savings);
1.762 + /* Is coef updated at all */
1.763 + if (update[1] == 0 || savings < 0) {
1.764 + vp9_write_bit(bc, 0);
1.765 + return;
1.766 + }
1.767 + vp9_write_bit(bc, 1);
1.768 + for (i = 0; i < BLOCK_TYPES; ++i) {
1.769 + for (j = 0; j < REF_TYPES; ++j) {
1.770 + for (k = 0; k < COEF_BANDS; ++k) {
1.771 + for (l = 0; l < PREV_COEF_CONTEXTS; ++l) {
1.772 + // calc probs and branch cts for this frame only
1.773 + for (t = 0; t < entropy_nodes_update; ++t) {
1.774 + vp9_prob newp = new_frame_coef_probs[i][j][k][l][t];
1.775 + vp9_prob *oldp = old_frame_coef_probs[i][j][k][l] + t;
1.776 + const vp9_prob upd = DIFF_UPDATE_PROB;
1.777 + int s;
1.778 + int u = 0;
1.779 + if (l >= 3 && k == 0)
1.780 + continue;
1.781 + if (t == PIVOT_NODE)
1.782 + s = vp9_prob_diff_update_savings_search_model(
1.783 + frame_branch_ct[i][j][k][l][0],
1.784 + old_frame_coef_probs[i][j][k][l], &newp, upd, i, j);
1.785 + else
1.786 + s = vp9_prob_diff_update_savings_search(
1.787 + frame_branch_ct[i][j][k][l][t],
1.788 + *oldp, &newp, upd);
1.789 + if (s > 0 && newp != *oldp)
1.790 + u = 1;
1.791 + vp9_write(bc, u, upd);
1.792 +#ifdef ENTROPY_STATS
1.793 + if (!cpi->dummy_packing)
1.794 + ++tree_update_hist[tx_size][i][j][k][l][t][u];
1.795 +#endif
1.796 + if (u) {
1.797 + /* send/use new probability */
1.798 + vp9_write_prob_diff_update(bc, newp, *oldp);
1.799 + *oldp = newp;
1.800 + }
1.801 + }
1.802 + }
1.803 + }
1.804 + }
1.805 + }
1.806 + return;
1.807 + }
1.808 +
1.809 + case 1:
1.810 + case 2: {
1.811 + const int prev_coef_contexts_to_update =
1.812 + (cpi->sf.use_fast_coef_updates == 2 ?
1.813 + PREV_COEF_CONTEXTS >> 1 : PREV_COEF_CONTEXTS);
1.814 + const int coef_band_to_update =
1.815 + (cpi->sf.use_fast_coef_updates == 2 ?
1.816 + COEF_BANDS >> 1 : COEF_BANDS);
1.817 + int updates = 0;
1.818 + int noupdates_before_first = 0;
1.819 + for (i = 0; i < BLOCK_TYPES; ++i) {
1.820 + for (j = 0; j < REF_TYPES; ++j) {
1.821 + for (k = 0; k < COEF_BANDS; ++k) {
1.822 + for (l = 0; l < PREV_COEF_CONTEXTS; ++l) {
1.823 + // calc probs and branch cts for this frame only
1.824 + for (t = 0; t < entropy_nodes_update; ++t) {
1.825 + vp9_prob newp = new_frame_coef_probs[i][j][k][l][t];
1.826 + vp9_prob *oldp = old_frame_coef_probs[i][j][k][l] + t;
1.827 + int s;
1.828 + int u = 0;
1.829 + if (l >= 3 && k == 0)
1.830 + continue;
1.831 + if (l >= prev_coef_contexts_to_update ||
1.832 + k >= coef_band_to_update) {
1.833 + u = 0;
1.834 + } else {
1.835 + if (t == PIVOT_NODE)
1.836 + s = vp9_prob_diff_update_savings_search_model(
1.837 + frame_branch_ct[i][j][k][l][0],
1.838 + old_frame_coef_probs[i][j][k][l], &newp, upd, i, j);
1.839 + else
1.840 + s = vp9_prob_diff_update_savings_search(
1.841 + frame_branch_ct[i][j][k][l][t],
1.842 + *oldp, &newp, upd);
1.843 + if (s > 0 && newp != *oldp)
1.844 + u = 1;
1.845 + }
1.846 + updates += u;
1.847 + if (u == 0 && updates == 0) {
1.848 + noupdates_before_first++;
1.849 +#ifdef ENTROPY_STATS
1.850 + if (!cpi->dummy_packing)
1.851 + ++tree_update_hist[tx_size][i][j][k][l][t][u];
1.852 +#endif
1.853 + continue;
1.854 + }
1.855 + if (u == 1 && updates == 1) {
1.856 + int v;
1.857 + // first update
1.858 + vp9_write_bit(bc, 1);
1.859 + for (v = 0; v < noupdates_before_first; ++v)
1.860 + vp9_write(bc, 0, upd);
1.861 + }
1.862 + vp9_write(bc, u, upd);
1.863 +#ifdef ENTROPY_STATS
1.864 + if (!cpi->dummy_packing)
1.865 + ++tree_update_hist[tx_size][i][j][k][l][t][u];
1.866 +#endif
1.867 + if (u) {
1.868 + /* send/use new probability */
1.869 + vp9_write_prob_diff_update(bc, newp, *oldp);
1.870 + *oldp = newp;
1.871 + }
1.872 + }
1.873 + }
1.874 + }
1.875 + }
1.876 + }
1.877 + if (updates == 0) {
1.878 + vp9_write_bit(bc, 0); // no updates
1.879 + }
1.880 + return;
1.881 + }
1.882 +
1.883 + default:
1.884 + assert(0);
1.885 + }
1.886 +}
1.887 +
1.888 +static void update_coef_probs(VP9_COMP* const cpi, vp9_writer* const bc) {
1.889 + const TX_MODE tx_mode = cpi->common.tx_mode;
1.890 +
1.891 + vp9_clear_system_state();
1.892 +
1.893 + // Build the cofficient contexts based on counts collected in encode loop
1.894 + build_coeff_contexts(cpi);
1.895 +
1.896 + update_coef_probs_common(bc, cpi, TX_4X4);
1.897 +
1.898 + // do not do this if not even allowed
1.899 + if (tx_mode > ONLY_4X4)
1.900 + update_coef_probs_common(bc, cpi, TX_8X8);
1.901 +
1.902 + if (tx_mode > ALLOW_8X8)
1.903 + update_coef_probs_common(bc, cpi, TX_16X16);
1.904 +
1.905 + if (tx_mode > ALLOW_16X16)
1.906 + update_coef_probs_common(bc, cpi, TX_32X32);
1.907 +}
1.908 +
1.909 +static void encode_loopfilter(struct loopfilter *lf,
1.910 + struct vp9_write_bit_buffer *wb) {
1.911 + int i;
1.912 +
1.913 + // Encode the loop filter level and type
1.914 + vp9_wb_write_literal(wb, lf->filter_level, 6);
1.915 + vp9_wb_write_literal(wb, lf->sharpness_level, 3);
1.916 +
1.917 + // Write out loop filter deltas applied at the MB level based on mode or
1.918 + // ref frame (if they are enabled).
1.919 + vp9_wb_write_bit(wb, lf->mode_ref_delta_enabled);
1.920 +
1.921 + if (lf->mode_ref_delta_enabled) {
1.922 + // Do the deltas need to be updated
1.923 + vp9_wb_write_bit(wb, lf->mode_ref_delta_update);
1.924 + if (lf->mode_ref_delta_update) {
1.925 + // Send update
1.926 + for (i = 0; i < MAX_REF_LF_DELTAS; i++) {
1.927 + const int delta = lf->ref_deltas[i];
1.928 +
1.929 + // Frame level data
1.930 + if (delta != lf->last_ref_deltas[i]) {
1.931 + lf->last_ref_deltas[i] = delta;
1.932 + vp9_wb_write_bit(wb, 1);
1.933 +
1.934 + assert(delta != 0);
1.935 + vp9_wb_write_literal(wb, abs(delta) & 0x3F, 6);
1.936 + vp9_wb_write_bit(wb, delta < 0);
1.937 + } else {
1.938 + vp9_wb_write_bit(wb, 0);
1.939 + }
1.940 + }
1.941 +
1.942 + // Send update
1.943 + for (i = 0; i < MAX_MODE_LF_DELTAS; i++) {
1.944 + const int delta = lf->mode_deltas[i];
1.945 + if (delta != lf->last_mode_deltas[i]) {
1.946 + lf->last_mode_deltas[i] = delta;
1.947 + vp9_wb_write_bit(wb, 1);
1.948 +
1.949 + assert(delta != 0);
1.950 + vp9_wb_write_literal(wb, abs(delta) & 0x3F, 6);
1.951 + vp9_wb_write_bit(wb, delta < 0);
1.952 + } else {
1.953 + vp9_wb_write_bit(wb, 0);
1.954 + }
1.955 + }
1.956 + }
1.957 + }
1.958 +}
1.959 +
1.960 +static void write_delta_q(struct vp9_write_bit_buffer *wb, int delta_q) {
1.961 + if (delta_q != 0) {
1.962 + vp9_wb_write_bit(wb, 1);
1.963 + vp9_wb_write_literal(wb, abs(delta_q), 4);
1.964 + vp9_wb_write_bit(wb, delta_q < 0);
1.965 + } else {
1.966 + vp9_wb_write_bit(wb, 0);
1.967 + }
1.968 +}
1.969 +
1.970 +static void encode_quantization(VP9_COMMON *cm,
1.971 + struct vp9_write_bit_buffer *wb) {
1.972 + vp9_wb_write_literal(wb, cm->base_qindex, QINDEX_BITS);
1.973 + write_delta_q(wb, cm->y_dc_delta_q);
1.974 + write_delta_q(wb, cm->uv_dc_delta_q);
1.975 + write_delta_q(wb, cm->uv_ac_delta_q);
1.976 +}
1.977 +
1.978 +
1.979 +static void encode_segmentation(VP9_COMP *cpi,
1.980 + struct vp9_write_bit_buffer *wb) {
1.981 + int i, j;
1.982 +
1.983 + struct segmentation *seg = &cpi->common.seg;
1.984 +
1.985 + vp9_wb_write_bit(wb, seg->enabled);
1.986 + if (!seg->enabled)
1.987 + return;
1.988 +
1.989 + // Segmentation map
1.990 + vp9_wb_write_bit(wb, seg->update_map);
1.991 + if (seg->update_map) {
1.992 + // Select the coding strategy (temporal or spatial)
1.993 + vp9_choose_segmap_coding_method(cpi);
1.994 + // Write out probabilities used to decode unpredicted macro-block segments
1.995 + for (i = 0; i < SEG_TREE_PROBS; i++) {
1.996 + const int prob = seg->tree_probs[i];
1.997 + const int update = prob != MAX_PROB;
1.998 + vp9_wb_write_bit(wb, update);
1.999 + if (update)
1.1000 + vp9_wb_write_literal(wb, prob, 8);
1.1001 + }
1.1002 +
1.1003 + // Write out the chosen coding method.
1.1004 + vp9_wb_write_bit(wb, seg->temporal_update);
1.1005 + if (seg->temporal_update) {
1.1006 + for (i = 0; i < PREDICTION_PROBS; i++) {
1.1007 + const int prob = seg->pred_probs[i];
1.1008 + const int update = prob != MAX_PROB;
1.1009 + vp9_wb_write_bit(wb, update);
1.1010 + if (update)
1.1011 + vp9_wb_write_literal(wb, prob, 8);
1.1012 + }
1.1013 + }
1.1014 + }
1.1015 +
1.1016 + // Segmentation data
1.1017 + vp9_wb_write_bit(wb, seg->update_data);
1.1018 + if (seg->update_data) {
1.1019 + vp9_wb_write_bit(wb, seg->abs_delta);
1.1020 +
1.1021 + for (i = 0; i < MAX_SEGMENTS; i++) {
1.1022 + for (j = 0; j < SEG_LVL_MAX; j++) {
1.1023 + const int active = vp9_segfeature_active(seg, i, j);
1.1024 + vp9_wb_write_bit(wb, active);
1.1025 + if (active) {
1.1026 + const int data = vp9_get_segdata(seg, i, j);
1.1027 + const int data_max = vp9_seg_feature_data_max(j);
1.1028 +
1.1029 + if (vp9_is_segfeature_signed(j)) {
1.1030 + vp9_encode_unsigned_max(wb, abs(data), data_max);
1.1031 + vp9_wb_write_bit(wb, data < 0);
1.1032 + } else {
1.1033 + vp9_encode_unsigned_max(wb, data, data_max);
1.1034 + }
1.1035 + }
1.1036 + }
1.1037 + }
1.1038 + }
1.1039 +}
1.1040 +
1.1041 +
1.1042 +static void encode_txfm_probs(VP9_COMP *cpi, vp9_writer *w) {
1.1043 + VP9_COMMON *const cm = &cpi->common;
1.1044 +
1.1045 + // Mode
1.1046 + vp9_write_literal(w, MIN(cm->tx_mode, ALLOW_32X32), 2);
1.1047 + if (cm->tx_mode >= ALLOW_32X32)
1.1048 + vp9_write_bit(w, cm->tx_mode == TX_MODE_SELECT);
1.1049 +
1.1050 + // Probabilities
1.1051 + if (cm->tx_mode == TX_MODE_SELECT) {
1.1052 + int i, j;
1.1053 + unsigned int ct_8x8p[TX_SIZES - 3][2];
1.1054 + unsigned int ct_16x16p[TX_SIZES - 2][2];
1.1055 + unsigned int ct_32x32p[TX_SIZES - 1][2];
1.1056 +
1.1057 +
1.1058 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.1059 + tx_counts_to_branch_counts_8x8(cm->counts.tx.p8x8[i], ct_8x8p);
1.1060 + for (j = 0; j < TX_SIZES - 3; j++)
1.1061 + vp9_cond_prob_diff_update(w, &cm->fc.tx_probs.p8x8[i][j], ct_8x8p[j]);
1.1062 + }
1.1063 +
1.1064 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.1065 + tx_counts_to_branch_counts_16x16(cm->counts.tx.p16x16[i], ct_16x16p);
1.1066 + for (j = 0; j < TX_SIZES - 2; j++)
1.1067 + vp9_cond_prob_diff_update(w, &cm->fc.tx_probs.p16x16[i][j],
1.1068 + ct_16x16p[j]);
1.1069 + }
1.1070 +
1.1071 + for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
1.1072 + tx_counts_to_branch_counts_32x32(cm->counts.tx.p32x32[i], ct_32x32p);
1.1073 + for (j = 0; j < TX_SIZES - 1; j++)
1.1074 + vp9_cond_prob_diff_update(w, &cm->fc.tx_probs.p32x32[i][j],
1.1075 + ct_32x32p[j]);
1.1076 + }
1.1077 +#ifdef MODE_STATS
1.1078 + if (!cpi->dummy_packing)
1.1079 + update_tx_count_stats(cm);
1.1080 +#endif
1.1081 + }
1.1082 +}
1.1083 +
1.1084 +static void write_interp_filter_type(INTERPOLATION_TYPE type,
1.1085 + struct vp9_write_bit_buffer *wb) {
1.1086 + const int type_to_literal[] = { 1, 0, 2, 3 };
1.1087 +
1.1088 + vp9_wb_write_bit(wb, type == SWITCHABLE);
1.1089 + if (type != SWITCHABLE)
1.1090 + vp9_wb_write_literal(wb, type_to_literal[type], 2);
1.1091 +}
1.1092 +
1.1093 +static void fix_mcomp_filter_type(VP9_COMP *cpi) {
1.1094 + VP9_COMMON *const cm = &cpi->common;
1.1095 +
1.1096 + if (cm->mcomp_filter_type == SWITCHABLE) {
1.1097 + // Check to see if only one of the filters is actually used
1.1098 + int count[SWITCHABLE_FILTERS];
1.1099 + int i, j, c = 0;
1.1100 + for (i = 0; i < SWITCHABLE_FILTERS; ++i) {
1.1101 + count[i] = 0;
1.1102 + for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j)
1.1103 + count[i] += cm->counts.switchable_interp[j][i];
1.1104 + c += (count[i] > 0);
1.1105 + }
1.1106 + if (c == 1) {
1.1107 + // Only one filter is used. So set the filter at frame level
1.1108 + for (i = 0; i < SWITCHABLE_FILTERS; ++i) {
1.1109 + if (count[i]) {
1.1110 + cm->mcomp_filter_type = i;
1.1111 + break;
1.1112 + }
1.1113 + }
1.1114 + }
1.1115 + }
1.1116 +}
1.1117 +
1.1118 +static void write_tile_info(VP9_COMMON *cm, struct vp9_write_bit_buffer *wb) {
1.1119 + int min_log2_tile_cols, max_log2_tile_cols, ones;
1.1120 + vp9_get_tile_n_bits(cm->mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);
1.1121 +
1.1122 + // columns
1.1123 + ones = cm->log2_tile_cols - min_log2_tile_cols;
1.1124 + while (ones--)
1.1125 + vp9_wb_write_bit(wb, 1);
1.1126 +
1.1127 + if (cm->log2_tile_cols < max_log2_tile_cols)
1.1128 + vp9_wb_write_bit(wb, 0);
1.1129 +
1.1130 + // rows
1.1131 + vp9_wb_write_bit(wb, cm->log2_tile_rows != 0);
1.1132 + if (cm->log2_tile_rows != 0)
1.1133 + vp9_wb_write_bit(wb, cm->log2_tile_rows != 1);
1.1134 +}
1.1135 +
1.1136 +static int get_refresh_mask(VP9_COMP *cpi) {
1.1137 + // Should the GF or ARF be updated using the transmitted frame or buffer
1.1138 +#if CONFIG_MULTIPLE_ARF
1.1139 + if (!cpi->multi_arf_enabled && cpi->refresh_golden_frame &&
1.1140 + !cpi->refresh_alt_ref_frame) {
1.1141 +#else
1.1142 + if (cpi->refresh_golden_frame && !cpi->refresh_alt_ref_frame &&
1.1143 + !cpi->use_svc) {
1.1144 +#endif
1.1145 + // Preserve the previously existing golden frame and update the frame in
1.1146 + // the alt ref slot instead. This is highly specific to the use of
1.1147 + // alt-ref as a forward reference, and this needs to be generalized as
1.1148 + // other uses are implemented (like RTC/temporal scaling)
1.1149 + //
1.1150 + // gld_fb_idx and alt_fb_idx need to be swapped for future frames, but
1.1151 + // that happens in vp9_onyx_if.c:update_reference_frames() so that it can
1.1152 + // be done outside of the recode loop.
1.1153 + return (cpi->refresh_last_frame << cpi->lst_fb_idx) |
1.1154 + (cpi->refresh_golden_frame << cpi->alt_fb_idx);
1.1155 + } else {
1.1156 + int arf_idx = cpi->alt_fb_idx;
1.1157 +#if CONFIG_MULTIPLE_ARF
1.1158 + // Determine which ARF buffer to use to encode this ARF frame.
1.1159 + if (cpi->multi_arf_enabled) {
1.1160 + int sn = cpi->sequence_number;
1.1161 + arf_idx = (cpi->frame_coding_order[sn] < 0) ?
1.1162 + cpi->arf_buffer_idx[sn + 1] :
1.1163 + cpi->arf_buffer_idx[sn];
1.1164 + }
1.1165 +#endif
1.1166 + return (cpi->refresh_last_frame << cpi->lst_fb_idx) |
1.1167 + (cpi->refresh_golden_frame << cpi->gld_fb_idx) |
1.1168 + (cpi->refresh_alt_ref_frame << arf_idx);
1.1169 + }
1.1170 +}
1.1171 +
1.1172 +static size_t encode_tiles(VP9_COMP *cpi, uint8_t *data_ptr) {
1.1173 + VP9_COMMON *const cm = &cpi->common;
1.1174 + vp9_writer residual_bc;
1.1175 +
1.1176 + int tile_row, tile_col;
1.1177 + TOKENEXTRA *tok[4][1 << 6], *tok_end;
1.1178 + size_t total_size = 0;
1.1179 + const int tile_cols = 1 << cm->log2_tile_cols;
1.1180 + const int tile_rows = 1 << cm->log2_tile_rows;
1.1181 +
1.1182 + vpx_memset(cpi->above_seg_context, 0, sizeof(*cpi->above_seg_context) *
1.1183 + mi_cols_aligned_to_sb(cm->mi_cols));
1.1184 +
1.1185 + tok[0][0] = cpi->tok;
1.1186 + for (tile_row = 0; tile_row < tile_rows; tile_row++) {
1.1187 + if (tile_row)
1.1188 + tok[tile_row][0] = tok[tile_row - 1][tile_cols - 1] +
1.1189 + cpi->tok_count[tile_row - 1][tile_cols - 1];
1.1190 +
1.1191 + for (tile_col = 1; tile_col < tile_cols; tile_col++)
1.1192 + tok[tile_row][tile_col] = tok[tile_row][tile_col - 1] +
1.1193 + cpi->tok_count[tile_row][tile_col - 1];
1.1194 + }
1.1195 +
1.1196 + for (tile_row = 0; tile_row < tile_rows; tile_row++) {
1.1197 + for (tile_col = 0; tile_col < tile_cols; tile_col++) {
1.1198 + TileInfo tile;
1.1199 +
1.1200 + vp9_tile_init(&tile, cm, tile_row, tile_col);
1.1201 + tok_end = tok[tile_row][tile_col] + cpi->tok_count[tile_row][tile_col];
1.1202 +
1.1203 + if (tile_col < tile_cols - 1 || tile_row < tile_rows - 1)
1.1204 + vp9_start_encode(&residual_bc, data_ptr + total_size + 4);
1.1205 + else
1.1206 + vp9_start_encode(&residual_bc, data_ptr + total_size);
1.1207 +
1.1208 + write_modes(cpi, &tile, &residual_bc, &tok[tile_row][tile_col], tok_end);
1.1209 + assert(tok[tile_row][tile_col] == tok_end);
1.1210 + vp9_stop_encode(&residual_bc);
1.1211 + if (tile_col < tile_cols - 1 || tile_row < tile_rows - 1) {
1.1212 + // size of this tile
1.1213 + write_be32(data_ptr + total_size, residual_bc.pos);
1.1214 + total_size += 4;
1.1215 + }
1.1216 +
1.1217 + total_size += residual_bc.pos;
1.1218 + }
1.1219 + }
1.1220 +
1.1221 + return total_size;
1.1222 +}
1.1223 +
1.1224 +static void write_display_size(VP9_COMP *cpi, struct vp9_write_bit_buffer *wb) {
1.1225 + VP9_COMMON *const cm = &cpi->common;
1.1226 +
1.1227 + const int scaling_active = cm->width != cm->display_width ||
1.1228 + cm->height != cm->display_height;
1.1229 + vp9_wb_write_bit(wb, scaling_active);
1.1230 + if (scaling_active) {
1.1231 + vp9_wb_write_literal(wb, cm->display_width - 1, 16);
1.1232 + vp9_wb_write_literal(wb, cm->display_height - 1, 16);
1.1233 + }
1.1234 +}
1.1235 +
1.1236 +static void write_frame_size(VP9_COMP *cpi,
1.1237 + struct vp9_write_bit_buffer *wb) {
1.1238 + VP9_COMMON *const cm = &cpi->common;
1.1239 + vp9_wb_write_literal(wb, cm->width - 1, 16);
1.1240 + vp9_wb_write_literal(wb, cm->height - 1, 16);
1.1241 +
1.1242 + write_display_size(cpi, wb);
1.1243 +}
1.1244 +
1.1245 +static void write_frame_size_with_refs(VP9_COMP *cpi,
1.1246 + struct vp9_write_bit_buffer *wb) {
1.1247 + VP9_COMMON *const cm = &cpi->common;
1.1248 + int refs[ALLOWED_REFS_PER_FRAME] = {cpi->lst_fb_idx, cpi->gld_fb_idx,
1.1249 + cpi->alt_fb_idx};
1.1250 + int i, found = 0;
1.1251 +
1.1252 + for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
1.1253 + YV12_BUFFER_CONFIG *cfg = &cm->yv12_fb[cm->ref_frame_map[refs[i]]];
1.1254 + found = cm->width == cfg->y_crop_width &&
1.1255 + cm->height == cfg->y_crop_height;
1.1256 +
1.1257 + // TODO(ivan): This prevents a bug while more than 3 buffers are used. Do it
1.1258 + // in a better way.
1.1259 + if (cpi->use_svc) {
1.1260 + found = 0;
1.1261 + }
1.1262 + vp9_wb_write_bit(wb, found);
1.1263 + if (found) {
1.1264 + break;
1.1265 + }
1.1266 + }
1.1267 +
1.1268 + if (!found) {
1.1269 + vp9_wb_write_literal(wb, cm->width - 1, 16);
1.1270 + vp9_wb_write_literal(wb, cm->height - 1, 16);
1.1271 + }
1.1272 +
1.1273 + write_display_size(cpi, wb);
1.1274 +}
1.1275 +
1.1276 +static void write_sync_code(struct vp9_write_bit_buffer *wb) {
1.1277 + vp9_wb_write_literal(wb, VP9_SYNC_CODE_0, 8);
1.1278 + vp9_wb_write_literal(wb, VP9_SYNC_CODE_1, 8);
1.1279 + vp9_wb_write_literal(wb, VP9_SYNC_CODE_2, 8);
1.1280 +}
1.1281 +
1.1282 +static void write_uncompressed_header(VP9_COMP *cpi,
1.1283 + struct vp9_write_bit_buffer *wb) {
1.1284 + VP9_COMMON *const cm = &cpi->common;
1.1285 +
1.1286 + vp9_wb_write_literal(wb, VP9_FRAME_MARKER, 2);
1.1287 +
1.1288 + // bitstream version.
1.1289 + // 00 - profile 0. 4:2:0 only
1.1290 + // 10 - profile 1. adds 4:4:4, 4:2:2, alpha
1.1291 + vp9_wb_write_bit(wb, cm->version);
1.1292 + vp9_wb_write_bit(wb, 0);
1.1293 +
1.1294 + vp9_wb_write_bit(wb, 0);
1.1295 + vp9_wb_write_bit(wb, cm->frame_type);
1.1296 + vp9_wb_write_bit(wb, cm->show_frame);
1.1297 + vp9_wb_write_bit(wb, cm->error_resilient_mode);
1.1298 +
1.1299 + if (cm->frame_type == KEY_FRAME) {
1.1300 + const COLOR_SPACE cs = UNKNOWN;
1.1301 + write_sync_code(wb);
1.1302 + vp9_wb_write_literal(wb, cs, 3);
1.1303 + if (cs != SRGB) {
1.1304 + vp9_wb_write_bit(wb, 0); // 0: [16, 235] (i.e. xvYCC), 1: [0, 255]
1.1305 + if (cm->version == 1) {
1.1306 + vp9_wb_write_bit(wb, cm->subsampling_x);
1.1307 + vp9_wb_write_bit(wb, cm->subsampling_y);
1.1308 + vp9_wb_write_bit(wb, 0); // has extra plane
1.1309 + }
1.1310 + } else {
1.1311 + assert(cm->version == 1);
1.1312 + vp9_wb_write_bit(wb, 0); // has extra plane
1.1313 + }
1.1314 +
1.1315 + write_frame_size(cpi, wb);
1.1316 + } else {
1.1317 + const int refs[ALLOWED_REFS_PER_FRAME] = {cpi->lst_fb_idx, cpi->gld_fb_idx,
1.1318 + cpi->alt_fb_idx};
1.1319 + if (!cm->show_frame)
1.1320 + vp9_wb_write_bit(wb, cm->intra_only);
1.1321 +
1.1322 + if (!cm->error_resilient_mode)
1.1323 + vp9_wb_write_literal(wb, cm->reset_frame_context, 2);
1.1324 +
1.1325 + if (cm->intra_only) {
1.1326 + write_sync_code(wb);
1.1327 +
1.1328 + vp9_wb_write_literal(wb, get_refresh_mask(cpi), NUM_REF_FRAMES);
1.1329 + write_frame_size(cpi, wb);
1.1330 + } else {
1.1331 + int i;
1.1332 + vp9_wb_write_literal(wb, get_refresh_mask(cpi), NUM_REF_FRAMES);
1.1333 + for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
1.1334 + vp9_wb_write_literal(wb, refs[i], NUM_REF_FRAMES_LOG2);
1.1335 + vp9_wb_write_bit(wb, cm->ref_frame_sign_bias[LAST_FRAME + i]);
1.1336 + }
1.1337 +
1.1338 + write_frame_size_with_refs(cpi, wb);
1.1339 +
1.1340 + vp9_wb_write_bit(wb, cm->allow_high_precision_mv);
1.1341 +
1.1342 + fix_mcomp_filter_type(cpi);
1.1343 + write_interp_filter_type(cm->mcomp_filter_type, wb);
1.1344 + }
1.1345 + }
1.1346 +
1.1347 + if (!cm->error_resilient_mode) {
1.1348 + vp9_wb_write_bit(wb, cm->refresh_frame_context);
1.1349 + vp9_wb_write_bit(wb, cm->frame_parallel_decoding_mode);
1.1350 + }
1.1351 +
1.1352 + vp9_wb_write_literal(wb, cm->frame_context_idx, NUM_FRAME_CONTEXTS_LOG2);
1.1353 +
1.1354 + encode_loopfilter(&cm->lf, wb);
1.1355 + encode_quantization(cm, wb);
1.1356 + encode_segmentation(cpi, wb);
1.1357 +
1.1358 + write_tile_info(cm, wb);
1.1359 +}
1.1360 +
1.1361 +static size_t write_compressed_header(VP9_COMP *cpi, uint8_t *data) {
1.1362 + VP9_COMMON *const cm = &cpi->common;
1.1363 + MACROBLOCKD *const xd = &cpi->mb.e_mbd;
1.1364 + FRAME_CONTEXT *const fc = &cm->fc;
1.1365 + vp9_writer header_bc;
1.1366 +
1.1367 + vp9_start_encode(&header_bc, data);
1.1368 +
1.1369 + if (xd->lossless)
1.1370 + cm->tx_mode = ONLY_4X4;
1.1371 + else
1.1372 + encode_txfm_probs(cpi, &header_bc);
1.1373 +
1.1374 + update_coef_probs(cpi, &header_bc);
1.1375 +
1.1376 +#ifdef ENTROPY_STATS
1.1377 + active_section = 2;
1.1378 +#endif
1.1379 +
1.1380 + vp9_update_skip_probs(cpi, &header_bc);
1.1381 +
1.1382 + if (!frame_is_intra_only(cm)) {
1.1383 + int i;
1.1384 +#ifdef ENTROPY_STATS
1.1385 + active_section = 1;
1.1386 +#endif
1.1387 +
1.1388 + update_inter_mode_probs(cm, &header_bc);
1.1389 + vp9_zero(cm->counts.inter_mode);
1.1390 +
1.1391 + if (cm->mcomp_filter_type == SWITCHABLE)
1.1392 + update_switchable_interp_probs(cpi, &header_bc);
1.1393 +
1.1394 + for (i = 0; i < INTRA_INTER_CONTEXTS; i++)
1.1395 + vp9_cond_prob_diff_update(&header_bc, &fc->intra_inter_prob[i],
1.1396 + cpi->intra_inter_count[i]);
1.1397 +
1.1398 + if (cm->allow_comp_inter_inter) {
1.1399 + const int comp_pred_mode = cpi->common.comp_pred_mode;
1.1400 + const int use_compound_pred = comp_pred_mode != SINGLE_PREDICTION_ONLY;
1.1401 + const int use_hybrid_pred = comp_pred_mode == HYBRID_PREDICTION;
1.1402 +
1.1403 + vp9_write_bit(&header_bc, use_compound_pred);
1.1404 + if (use_compound_pred) {
1.1405 + vp9_write_bit(&header_bc, use_hybrid_pred);
1.1406 + if (use_hybrid_pred)
1.1407 + for (i = 0; i < COMP_INTER_CONTEXTS; i++)
1.1408 + vp9_cond_prob_diff_update(&header_bc, &fc->comp_inter_prob[i],
1.1409 + cpi->comp_inter_count[i]);
1.1410 + }
1.1411 + }
1.1412 +
1.1413 + if (cm->comp_pred_mode != COMP_PREDICTION_ONLY) {
1.1414 + for (i = 0; i < REF_CONTEXTS; i++) {
1.1415 + vp9_cond_prob_diff_update(&header_bc, &fc->single_ref_prob[i][0],
1.1416 + cpi->single_ref_count[i][0]);
1.1417 + vp9_cond_prob_diff_update(&header_bc, &fc->single_ref_prob[i][1],
1.1418 + cpi->single_ref_count[i][1]);
1.1419 + }
1.1420 + }
1.1421 +
1.1422 + if (cm->comp_pred_mode != SINGLE_PREDICTION_ONLY)
1.1423 + for (i = 0; i < REF_CONTEXTS; i++)
1.1424 + vp9_cond_prob_diff_update(&header_bc, &fc->comp_ref_prob[i],
1.1425 + cpi->comp_ref_count[i]);
1.1426 +
1.1427 + update_mbintra_mode_probs(cpi, &header_bc);
1.1428 +
1.1429 + for (i = 0; i < PARTITION_CONTEXTS; ++i) {
1.1430 + unsigned int bct[PARTITION_TYPES - 1][2];
1.1431 + update_mode(&header_bc, PARTITION_TYPES, vp9_partition_tree,
1.1432 + fc->partition_prob[i], bct,
1.1433 + (unsigned int *)cpi->partition_count[i]);
1.1434 + }
1.1435 +
1.1436 + vp9_write_nmv_probs(cpi, cm->allow_high_precision_mv, &header_bc);
1.1437 + }
1.1438 +
1.1439 + vp9_stop_encode(&header_bc);
1.1440 + assert(header_bc.pos <= 0xffff);
1.1441 +
1.1442 + return header_bc.pos;
1.1443 +}
1.1444 +
1.1445 +void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, unsigned long *size) {
1.1446 + uint8_t *data = dest;
1.1447 + size_t first_part_size;
1.1448 + struct vp9_write_bit_buffer wb = {data, 0};
1.1449 + struct vp9_write_bit_buffer saved_wb;
1.1450 +
1.1451 + write_uncompressed_header(cpi, &wb);
1.1452 + saved_wb = wb;
1.1453 + vp9_wb_write_literal(&wb, 0, 16); // don't know in advance first part. size
1.1454 +
1.1455 + data += vp9_rb_bytes_written(&wb);
1.1456 +
1.1457 + vp9_compute_update_table();
1.1458 +
1.1459 +#ifdef ENTROPY_STATS
1.1460 + if (cm->frame_type == INTER_FRAME)
1.1461 + active_section = 0;
1.1462 + else
1.1463 + active_section = 7;
1.1464 +#endif
1.1465 +
1.1466 + vp9_clear_system_state(); // __asm emms;
1.1467 +
1.1468 + first_part_size = write_compressed_header(cpi, data);
1.1469 + data += first_part_size;
1.1470 + vp9_wb_write_literal(&saved_wb, first_part_size, 16);
1.1471 +
1.1472 + data += encode_tiles(cpi, data);
1.1473 +
1.1474 + *size = data - dest;
1.1475 +}
1.1476 +
1.1477 +#ifdef ENTROPY_STATS
1.1478 +static void print_tree_update_for_type(FILE *f,
1.1479 + vp9_coeff_stats *tree_update_hist,
1.1480 + int block_types, const char *header) {
1.1481 + int i, j, k, l, m;
1.1482 +
1.1483 + fprintf(f, "const vp9_coeff_prob %s = {\n", header);
1.1484 + for (i = 0; i < block_types; i++) {
1.1485 + fprintf(f, " { \n");
1.1486 + for (j = 0; j < REF_TYPES; j++) {
1.1487 + fprintf(f, " { \n");
1.1488 + for (k = 0; k < COEF_BANDS; k++) {
1.1489 + fprintf(f, " {\n");
1.1490 + for (l = 0; l < PREV_COEF_CONTEXTS; l++) {
1.1491 + fprintf(f, " {");
1.1492 + for (m = 0; m < ENTROPY_NODES; m++) {
1.1493 + fprintf(f, "%3d, ",
1.1494 + get_binary_prob(tree_update_hist[i][j][k][l][m][0],
1.1495 + tree_update_hist[i][j][k][l][m][1]));
1.1496 + }
1.1497 + fprintf(f, "},\n");
1.1498 + }
1.1499 + fprintf(f, "},\n");
1.1500 + }
1.1501 + fprintf(f, " },\n");
1.1502 + }
1.1503 + fprintf(f, " },\n");
1.1504 + }
1.1505 + fprintf(f, "};\n");
1.1506 +}
1.1507 +
1.1508 +void print_tree_update_probs() {
1.1509 + FILE *f = fopen("coefupdprob.h", "w");
1.1510 + fprintf(f, "\n/* Update probabilities for token entropy tree. */\n\n");
1.1511 +
1.1512 + print_tree_update_for_type(f, tree_update_hist[TX_4X4], BLOCK_TYPES,
1.1513 + "vp9_coef_update_probs_4x4[BLOCK_TYPES]");
1.1514 + print_tree_update_for_type(f, tree_update_hist[TX_8X8], BLOCK_TYPES,
1.1515 + "vp9_coef_update_probs_8x8[BLOCK_TYPES]");
1.1516 + print_tree_update_for_type(f, tree_update_hist[TX_16X16], BLOCK_TYPES,
1.1517 + "vp9_coef_update_probs_16x16[BLOCK_TYPES]");
1.1518 + print_tree_update_for_type(f, tree_update_hist[TX_32X32], BLOCK_TYPES,
1.1519 + "vp9_coef_update_probs_32x32[BLOCK_TYPES]");
1.1520 +
1.1521 + fclose(f);
1.1522 + f = fopen("treeupdate.bin", "wb");
1.1523 + fwrite(tree_update_hist, sizeof(tree_update_hist), 1, f);
1.1524 + fclose(f);
1.1525 +}
1.1526 +#endif
