/* * 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 #include #include #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_STATS int intra_mode_stats [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES]; unsigned int tree_update_hist [BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES][2]; #if CONFIG_HYBRIDTRANSFORM unsigned int hybrid_tree_update_hist [BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES][2]; #endif unsigned int tree_update_hist_8x8 [BLOCK_TYPES_8X8] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES] [2]; #if CONFIG_HYBRIDTRANSFORM8X8 unsigned int hybrid_tree_update_hist_8x8 [BLOCK_TYPES_8X8] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES] [2]; #endif unsigned int tree_update_hist_16x16 [BLOCK_TYPES_16X16] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES] [2]; #if CONFIG_HYBRIDTRANSFORM16X16 unsigned int hybrid_tree_update_hist_16x16 [BLOCK_TYPES_16X16] [COEF_BANDS] [PREV_COEF_CONTEXTS] [ENTROPY_NODES] [2]; #endif extern unsigned int active_section; #endif #ifdef MODE_STATS int 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_NEWP static int update_bits[255]; 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); 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) { 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 ); } } static __inline int get_prob(int num, int den) { int p; if (den <= 0) return 128; p = (num * 255 + (den >> 1)) / den; if (p > 255) return 255; else if (p < 1) return 1; return p; } 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", 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; } } } 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) { bestsavings = savings; bestnewp = newp; } } *bestp = bestnewp; return bestsavings; } static void pack_mb_tokens(vp8_writer *w, TOKENEXTRA **tp, const TOKENEXTRA *const stop) { unsigned int split; unsigned int shift; int count = w->count; unsigned int range = w->range; unsigned int lowvalue = w->lowvalue; TOKENEXTRA *p = *tp; 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; if (t == EOSB_TOKEN) { ++p; break; } /* 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); 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) { 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; *tp = p; } 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); } #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; } } } // 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]); } 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->bc2; #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; TOKENEXTRA *tok = cpi->tok; TOKENEXTRA *tok_end = tok + cpi->tok_count; 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}; //final_packing = !cpi->dummy_packing; cpi->mb.partition_info = cpi->mb.pi; 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 { // 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; 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, 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); } #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, &best_second_mv, (const MV_CONTEXT *) mvc); } #endif } } } while (++j < cpi->mb.partition_info->count); } break; default: break; } } } #if CONFIG_TX_SELECT if (((rf == INTRA_FRAME && mode <= I8X8_PRED) || (rf != INTRA_FRAME && mode != SPLITMV)) && pc->txfm_mode == TX_MODE_SELECT && !((pc->mb_no_coeff_skip && mi->mb_skip_coeff) || (segfeature_active(xd, segment_id, SEG_LVL_EOB) && get_segdata(xd, segment_id, SEG_LVL_EOB) == 0))) { TX_SIZE sz = mi->txfm_size; // FIXME(rbultje) code ternary symbol once all experiments are merged vp8_write(w, sz != TX_4X4, pc->prob_tx[0]); if (sz != TX_4X4 && mode != I8X8_PRED) vp8_write(w, sz != TX_8X8, pc->prob_tx[1]); } #endif #ifdef ENTROPY_STATS active_section = 1; #endif assert(tok < tok_end); pack_mb_tokens(w, &tok, tok_end); #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_mb_modes_kf(const VP8_COMMON *c, const MACROBLOCKD *xd, const MODE_INFO *m, int mode_info_stride, vp8_writer *const bc) { const int mis = mode_info_stride; int ym; int segment_id; ym = m->mbmi.mode; segment_id = m->mbmi.segment_id; if (xd->update_mb_segmentation_map) { write_mb_segid(bc, &m->mbmi, xd); } 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 #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_TX_SELECT if (ym <= I8X8_PRED && c->txfm_mode == TX_MODE_SELECT && !((c->mb_no_coeff_skip && m->mbmi.mb_skip_coeff) || (segfeature_active(xd, segment_id, SEG_LVL_EOB) && get_segdata(xd, segment_id, SEG_LVL_EOB) == 0))) { TX_SIZE sz = m->mbmi.txfm_size; // FIXME(rbultje) code ternary symbol once all experiments are merged vp8_write(bc, sz != TX_4X4, c->prob_tx[0]); if (sz != TX_4X4 && ym <= TM_PRED) vp8_write(bc, sz != TX_8X8, c->prob_tx[1]); } #endif } static void write_kfmodes(VP8_COMP *cpi) { vp8_writer *const bc = &cpi->bc2; 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 row_delta[4] = { 0, +1, 0, -1}; int col_delta[4] = { +1, -1, +1, +1}; TOKENEXTRA *tok = cpi->tok; TOKENEXTRA *tok_end = tok + cpi->tok_count; 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 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; write_mb_modes_kf(c, xd, m, mis, bc); #ifdef ENTROPY_STATS active_section = 8; #endif assert(tok < tok_end); pack_mb_tokens(bc, &tok, tok_end); #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; } } /* 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 CONFIG_HYBRIDTRANSFORM 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_hybrid_coef_probs [i][j][k], cpi->frame_hybrid_branch_ct [i][j][k], cpi->hybrid_coef_counts [i][j][k], 256, 1 ); #ifdef ENTROPY_STATS if (!cpi->dummy_packing) for (t = 0; t < MAX_ENTROPY_TOKENS; ++t) hybrid_context_counters[i][j][k][t] += cpi->hybrid_coef_counts[i][j][k][t]; #endif } } } #endif if (cpi->common.txfm_mode != ONLY_4X4) { 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], 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_HYBRIDTRANSFORM8X8 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_hybrid_coef_probs_8x8 [i][j][k], cpi->frame_hybrid_branch_ct_8x8 [i][j][k], cpi->hybrid_coef_counts_8x8 [i][j][k], 256, 1 ); #ifdef ENTROPY_STATS if (!cpi->dummy_packing) for (t = 0; t < MAX_ENTROPY_TOKENS; ++t) hybrid_context_counters_8x8[i][j][k][t] += cpi->hybrid_coef_counts_8x8[i][j][k][t]; #endif } } } #endif } if (cpi->common.txfm_mode > ALLOW_8X8) { 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 } } } } #if CONFIG_HYBRIDTRANSFORM16X16 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_hybrid_coef_probs_16x16[i][j][k], cpi->frame_hybrid_branch_ct_16x16[i][j][k], cpi->hybrid_coef_counts_16x16[i][j][k], 256, 1); #ifdef ENTROPY_STATS if (!cpi->dummy_packing) for (t = 0; t < MAX_ENTROPY_TOKENS; ++t) hybrid_context_counters_16x16[i][j][k][t] += cpi->hybrid_coef_counts_16x16[i][j][k][t]; #endif } } } #endif } #if 0 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)); #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 != ONLY_4X4) 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], *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; } } } } } } #endif 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; 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], *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; } } } } } } #if CONFIG_HYBRIDTRANSFORM savings = 0; update[0] = update[1] = 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_hybrid_coef_probs [i][j][k][t]; vp8_prob *Pold = cpi->common.fc.hybrid_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_hybrid_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_hybrid_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_hybrid_coef_probs [i][j][k][t]; vp8_prob *Pold = cpi->common.fc.hybrid_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_hybrid_branch_ct [i][j][k][t], *Pold, &newp, upd); if (s > 0 && newp != *Pold) u = 1; #else s = prob_update_savings( cpi->frame_hybrid_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) ++ hybrid_tree_update_hist [i][j][k][t] [u]; #endif if (u) { /* send/use new probability */ write_prob_diff_update(w, newp, *Pold); *Pold = newp; } } } } } } #endif /* do not do this if not even allowed */ if (cpi->common.txfm_mode != ONLY_4X4) { /* 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) { 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_HYBRIDTRANSFORM8X8 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_hybrid_branch_ct_8x8 [i][j][k][t]; vp8_prob newp = cpi->frame_hybrid_coef_probs_8x8 [i][j][k][t]; vp8_prob *Pold = cpi->common.fc.hybrid_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) { for (k = 0; k < PREV_COEF_CONTEXTS; ++k) { for (t = 0; t < ENTROPY_NODES; ++t) { const unsigned int *ct = cpi->frame_hybrid_branch_ct_8x8 [i][j][k][t]; vp8_prob newp = cpi->frame_hybrid_coef_probs_8x8 [i][j][k][t]; vp8_prob *Pold = cpi->common.fc.hybrid_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) ++ hybrid_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; } } } } } } #endif } 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_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]++; } } } } 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; } } } } } } #if CONFIG_HYBRIDTRANSFORM16X16 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_hybrid_branch_ct_16x16[i][j][k][t]; vp8_prob newp = cpi->frame_hybrid_coef_probs_16x16[i][j][k][t]; vp8_prob *Pold = cpi->common.fc.hybrid_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]++; } } } } 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_hybrid_branch_ct_16x16[i][j][k][t]; vp8_prob newp = cpi->frame_hybrid_coef_probs_16x16[i][j][k][t]; vp8_prob *Pold = cpi->common.fc.hybrid_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) ++hybrid_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++) { 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) { 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); // 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]; if (data != 255) { vp8_write_bit(bc, 1); vp8_write_literal(bc, data, 8); } else { vp8_write_bit(bc, 0); } } // Write out the chosen coding method. vp8_write_bit(bc, (pc->temporal_update) ? 1 : 0); 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); } } } } 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 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 } // 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 #if CONFIG_TX_SELECT { if (pc->txfm_mode == TX_MODE_SELECT) { pc->prob_tx[0] = get_prob(cpi->txfm_count[0] + cpi->txfm_count_8x8p[0], cpi->txfm_count[0] + cpi->txfm_count[1] + cpi->txfm_count[2] + cpi->txfm_count_8x8p[0] + cpi->txfm_count_8x8p[1]); pc->prob_tx[1] = get_prob(cpi->txfm_count[1], cpi->txfm_count[1] + cpi->txfm_count[2]); } else { pc->prob_tx[0] = 128; pc->prob_tx[1] = 128; } vp8_write_literal(bc, pc->txfm_mode, 2); if (pc->txfm_mode == TX_MODE_SELECT) { vp8_write_literal(bc, pc->prob_tx[0], 8); vp8_write_literal(bc, pc->prob_tx[1], 8); } } #else vp8_write_bit(bc, !!pc->txfm_mode); #endif // 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++) { 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); 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); #if CONFIG_HYBRIDTRANSFORM vp8_copy(cpi->common.fc.pre_hybrid_coef_probs, cpi->common.fc.hybrid_coef_probs); #endif vp8_copy(cpi->common.fc.pre_coef_probs_8x8, cpi->common.fc.coef_probs_8x8); #if CONFIG_HYBRIDTRANSFORM8X8 vp8_copy(cpi->common.fc.pre_hybrid_coef_probs_8x8, cpi->common.fc.hybrid_coef_probs_8x8); #endif vp8_copy(cpi->common.fc.pre_coef_probs_16x16, cpi->common.fc.coef_probs_16x16); #if CONFIG_HYBRIDTRANSFORM16X16 vp8_copy(cpi->common.fc.pre_hybrid_coef_probs_16x16, cpi->common.fc.hybrid_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 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) update_coef_probs(cpi); #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->mb_no_coeff_skip) { int k; update_skip_probs(cpi); for (k = 0; k < MBSKIP_CONTEXTS; ++k) vp8_write_literal(bc, pc->mbskip_pred_probs[k], 8); } if (pc->frame_type == KEY_FRAME) { if (!pc->kf_ymode_probs_update) { vp8_write_literal(bc, pc->kf_ymode_probs_index, 3); } } else { // Update the probabilities used to encode reference frame data update_ref_probs(cpi); #ifdef ENTROPY_STATS active_section = 1; #endif #if CONFIG_PRED_FILTER // Write the prediction filter mode used for this frame vp8_write_literal(bc, 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(bc, pc->prob_pred_filter_off, 8); #endif #if CONFIG_SWITCHABLE_INTERP if (pc->mcomp_filter_type == SWITCHABLE) update_switchable_interp_probs(cpi); #endif vp8_write_literal(bc, pc->prob_intra_coded, 8); vp8_write_literal(bc, pc->prob_last_coded, 8); vp8_write_literal(bc, pc->prob_gf_coded, 8); { const int comp_pred_mode = cpi->common.comp_pred_mode; const int use_compound_pred = (comp_pred_mode != SINGLE_PREDICTION_ONLY); const int use_hybrid_pred = (comp_pred_mode == HYBRID_PREDICTION); vp8_write(bc, use_compound_pred, 128); if (use_compound_pred) { vp8_write(bc, use_hybrid_pred, 128); if (use_hybrid_pred) { 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(bc, pc->prob_comppred[i], 8); } } } } 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); } #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); if (pc->frame_type == KEY_FRAME) { decide_kf_ymode_entropy(cpi); write_kfmodes(cpi); } else { pack_inter_mode_mvs(cpi); vp8_update_mode_context(&cpi->common); } 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" " [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"); } 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) { 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"); } 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); fwrite(tree_update_hist_16x16, sizeof(tree_update_hist_16x16), 1, f); fclose(f); } #endif