1474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org/* 2474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * 4474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * Use of this source code is governed by a BSD-style license 5474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * that can be found in the LICENSE file in the root of the source 6474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * tree. An additional intellectual property rights grant can be found 7474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * in the file PATENTS. All contributing project authors may 8474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * be found in the AUTHORS file in the root of the source tree. 9474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org */ 10474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 11474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 12474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "vp8/common/common.h" 13474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "encodemv.h" 14474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "vp8/common/entropymode.h" 15474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "vp8/common/systemdependent.h" 16474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 17474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include <math.h> 18474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 191cedac70da0675180660d8d3478648400afde47djohannkoenig@chromium.org#ifdef VP8_ENTROPY_STATS 20474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgextern unsigned int active_section; 21474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 22474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 23474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic void encode_mvcomponent( 24474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_writer *const w, 25474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const int v, 26474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const struct mv_context *mvc 27474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org) 28474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 29474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob *p = mvc->prob; 30474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const int x = v < 0 ? -v : v; 31474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 32ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org if (x < mvnum_short) /* Small */ 33474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 34474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write(w, 0, p [mvpis_short]); 35474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_treed_write(w, vp8_small_mvtree, p + MVPshort, x, 3); 36474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 37474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (!x) 38ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org return; /* no sign bit */ 39474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 40ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org else /* Large */ 41474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 42474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int i = 0; 43474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 44474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write(w, 1, p [mvpis_short]); 45474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 46474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 47474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write(w, (x >> i) & 1, p [MVPbits + i]); 48474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 49474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++i < 3); 50474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 51474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org i = mvlong_width - 1; /* Skip bit 3, which is sometimes implicit */ 52474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 53474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 54474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write(w, (x >> i) & 1, p [MVPbits + i]); 55474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 56474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (--i > 3); 57474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 58474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (x & 0xFFF0) 59474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write(w, (x >> 3) & 1, p [MVPbits + 3]); 60474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 61474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 62474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write(w, v < 0, p [MVPsign]); 63474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 64474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#if 0 65474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic int max_mv_r = 0; 66474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic int max_mv_c = 0; 67474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 68474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_encode_motion_vector(vp8_writer *w, const MV *mv, const MV_CONTEXT *mvc) 69474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 70474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 71474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#if 0 72474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 73474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (abs(mv->row >> 1) > max_mv_r) 74474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 75474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org FILE *f = fopen("maxmv.stt", "a"); 76474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org max_mv_r = abs(mv->row >> 1); 77474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fprintf(f, "New Mv Row Max %6d\n", (mv->row >> 1)); 78474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 79474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((abs(mv->row) / 2) != max_mv_r) 80474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fprintf(f, "MV Row conversion error %6d\n", abs(mv->row) / 2); 81474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 82474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fclose(f); 83474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 84474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 85474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (abs(mv->col >> 1) > max_mv_c) 86474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 87474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org FILE *f = fopen("maxmv.stt", "a"); 88474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fprintf(f, "New Mv Col Max %6d\n", (mv->col >> 1)); 89474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org max_mv_c = abs(mv->col >> 1); 90474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fclose(f); 91474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 92474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 93474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 94474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 95474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org encode_mvcomponent(w, mv->row >> 1, &mvc[0]); 96474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org encode_mvcomponent(w, mv->col >> 1, &mvc[1]); 97474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 98474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 99474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 100474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic unsigned int cost_mvcomponent(const int v, const struct mv_context *mvc) 101474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 102474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob *p = mvc->prob; 103ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org const int x = v; 104474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int cost; 105474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 106474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (x < mvnum_short) 107474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 108474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cost = vp8_cost_zero(p [mvpis_short]) 109474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org + vp8_treed_cost(vp8_small_mvtree, p + MVPshort, x, 3); 110474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 111474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (!x) 112474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org return cost; 113474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 114474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 115474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 116474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int i = 0; 117474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cost = vp8_cost_one(p [mvpis_short]); 118474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 119474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 120474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cost += vp8_cost_bit(p [MVPbits + i], (x >> i) & 1); 121474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 122474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++i < 3); 123474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 124474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org i = mvlong_width - 1; /* Skip bit 3, which is sometimes implicit */ 125474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 126474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 127474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cost += vp8_cost_bit(p [MVPbits + i], (x >> i) & 1); 128474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 129474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (--i > 3); 130474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 131474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (x & 0xFFF0) 132474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cost += vp8_cost_bit(p [MVPbits + 3], (x >> 3) & 1); 133474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 134474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 135ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org return cost; /* + vp8_cost_bit( p [MVPsign], v < 0); */ 136474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 137474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 138474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_build_component_cost_table(int *mvcost[2], const MV_CONTEXT *mvc, int mvc_flag[2]) 139474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 140ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org int i = 1; 141474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int cost0 = 0; 142474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int cost1 = 0; 143474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 144474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_clear_system_state(); 145474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 146474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org i = 1; 147474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 148474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (mvc_flag[0]) 149474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 150474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org mvcost [0] [0] = cost_mvcomponent(0, &mvc[0]); 151474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 152474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 153474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 154474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cost0 = cost_mvcomponent(i, &mvc[0]); 155474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 156474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org mvcost [0] [i] = cost0 + vp8_cost_zero(mvc[0].prob[MVPsign]); 157474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org mvcost [0] [-i] = cost0 + vp8_cost_one(mvc[0].prob[MVPsign]); 158474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 159474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++i <= mv_max); 160474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 161474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 162474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org i = 1; 163474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 164474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (mvc_flag[1]) 165474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 166474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org mvcost [1] [0] = cost_mvcomponent(0, &mvc[1]); 167474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 168474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 169474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 170474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cost1 = cost_mvcomponent(i, &mvc[1]); 171474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 172474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org mvcost [1] [i] = cost1 + vp8_cost_zero(mvc[1].prob[MVPsign]); 173474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org mvcost [1] [-i] = cost1 + vp8_cost_one(mvc[1].prob[MVPsign]); 174474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 175474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++i <= mv_max); 176474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 177474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 178474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 179474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 180ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org/* Motion vector probability table update depends on benefit. 181ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * Small correction allows for the fact that an update to an MV probability 182ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * may have benefit in subsequent frames as well as the current one. 183ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 184474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#define MV_PROB_UPDATE_CORRECTION -1 185474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 186474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1875c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.orgstatic void calc_prob(vp8_prob *p, const unsigned int ct[2]) 188474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 189474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const unsigned int tot = ct[0] + ct[1]; 190474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 191474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (tot) 192474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 193474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob x = ((ct[0] * 255) / tot) & -2; 194474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *p = x ? x : 1; 195474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 196474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 197474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 198474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic void update( 199474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_writer *const w, 200474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const unsigned int ct[2], 201474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_prob *const cur_p, 202474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob new_p, 203474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob update_p, 204474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int *updated 205474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org) 206474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 207474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const int cur_b = vp8_cost_branch(ct, *cur_p); 208474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const int new_b = vp8_cost_branch(ct, new_p); 209474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const int cost = 7 + MV_PROB_UPDATE_CORRECTION + ((vp8_cost_one(update_p) - vp8_cost_zero(update_p) + 128) >> 8); 210474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 211474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cur_b - new_b > cost) 212474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 213474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *cur_p = new_p; 214474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write(w, 1, update_p); 215474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write_literal(w, new_p >> 1, 7); 216474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *updated = 1; 217474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 218474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 219474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 220474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_write(w, 0, update_p); 221474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 222474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 223474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic void write_component_probs( 224474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_writer *const w, 225474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org struct mv_context *cur_mvc, 226474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const struct mv_context *default_mvc_, 227474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const struct mv_context *update_mvc, 228474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const unsigned int events [MVvals], 229474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int rc, 230474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int *updated 231474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org) 232474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 233474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_prob *Pcur = cur_mvc->prob; 234474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob *default_mvc = default_mvc_->prob; 235474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob *Pupdate = update_mvc->prob; 236474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int is_short_ct[2], sign_ct[2]; 237474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 238474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int bit_ct [mvlong_width] [2]; 239474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 240474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int short_ct [mvnum_short]; 241474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int short_bct [mvnum_short-1] [2]; 242474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 243474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_prob Pnew [MVPcount]; 244474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 245474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (void) rc; 246474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy_array(Pnew, default_mvc, MVPcount); 247474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 248474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_zero(is_short_ct) 249474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_zero(sign_ct) 250474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_zero(bit_ct) 251474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_zero(short_ct) 252474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_zero(short_bct) 253474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 254474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 255ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* j=0 */ 256474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 257474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const int c = events [mv_max]; 258474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 259ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org is_short_ct [0] += c; /* Short vector */ 260ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org short_ct [0] += c; /* Magnitude distribution */ 261474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 262474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 263ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* j: 1 ~ mv_max (1023) */ 264474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 265474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int j = 1; 266474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 267474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 268474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 269ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org const int c1 = events [mv_max + j]; /* positive */ 270ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org const int c2 = events [mv_max - j]; /* negative */ 271474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const int c = c1 + c2; 272474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int a = j; 273474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 274474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org sign_ct [0] += c1; 275474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org sign_ct [1] += c2; 276474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 277474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (a < mvnum_short) 278474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 279ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org is_short_ct [0] += c; /* Short vector */ 280ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org short_ct [a] += c; /* Magnitude distribution */ 281474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 282474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 283474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 284474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int k = mvlong_width - 1; 285ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org is_short_ct [1] += c; /* Long vector */ 286474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 287474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* bit 3 not always encoded. */ 288474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 289474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org bit_ct [k] [(a >> k) & 1] += c; 290474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 291474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (--k >= 0); 292474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 293474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 294474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++j <= mv_max); 295474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 296474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 297474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org calc_prob(Pnew + mvpis_short, is_short_ct); 298474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 299474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org calc_prob(Pnew + MVPsign, sign_ct); 300474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 301474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 302474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_prob p [mvnum_short - 1]; /* actually only need branch ct */ 303474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int j = 0; 304474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 305474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_tree_probs_from_distribution( 306474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 8, vp8_small_mvencodings, vp8_small_mvtree, 307474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org p, short_bct, short_ct, 308474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 256, 1 309474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ); 310474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 311474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 312474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org calc_prob(Pnew + MVPshort + j, short_bct[j]); 313474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 314474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++j < mvnum_short - 1); 315474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 316474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 317474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 318474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int j = 0; 319474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 320474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 321474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org calc_prob(Pnew + MVPbits + j, bit_ct[j]); 322474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 323474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++j < mvlong_width); 324474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 325474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 326474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org update(w, is_short_ct, Pcur + mvpis_short, Pnew[mvpis_short], *Pupdate++, updated); 327474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 328474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org update(w, sign_ct, Pcur + MVPsign, Pnew[MVPsign], *Pupdate++, updated); 329474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 330474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 331474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob *const new_p = Pnew + MVPshort; 332474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_prob *const cur_p = Pcur + MVPshort; 333474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 334474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int j = 0; 335474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 336474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 337474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 338474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org update(w, short_bct[j], cur_p + j, new_p[j], *Pupdate++, updated); 339474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 340474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++j < mvnum_short - 1); 341474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 342474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 343474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 344474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org const vp8_prob *const new_p = Pnew + MVPbits; 345474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_prob *const cur_p = Pcur + MVPbits; 346474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 347474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int j = 0; 348474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 349474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 350474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 351474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org update(w, bit_ct[j], cur_p + j, new_p[j], *Pupdate++, updated); 352474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 353474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++j < mvlong_width); 354474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 355474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 356474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 357474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_write_mvprobs(VP8_COMP *cpi) 358474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 359167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org vp8_writer *const w = cpi->bc; 360474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org MV_CONTEXT *mvc = cpi->common.fc.mvc; 361474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int flags[2] = {0, 0}; 3621cedac70da0675180660d8d3478648400afde47djohannkoenig@chromium.org#ifdef VP8_ENTROPY_STATS 363474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org active_section = 4; 364474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 365474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org write_component_probs( 366d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org w, &mvc[0], &vp8_default_mv_context[0], &vp8_mv_update_probs[0], 367d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->mb.MVcount[0], 0, &flags[0] 368474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ); 369474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org write_component_probs( 370d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org w, &mvc[1], &vp8_default_mv_context[1], &vp8_mv_update_probs[1], 371d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->mb.MVcount[1], 1, &flags[1] 372474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ); 373474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 374474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (flags[0] || flags[1]) 375474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_build_component_cost_table(cpi->mb.mvcost, (const MV_CONTEXT *) cpi->common.fc.mvc, flags); 376474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 3771cedac70da0675180660d8d3478648400afde47djohannkoenig@chromium.org#ifdef VP8_ENTROPY_STATS 378474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org active_section = 5; 379474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 380474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 381