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 <stdlib.h> 13474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include <stdio.h> 14474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include <string.h> 15474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include <limits.h> 16474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include <assert.h> 17474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 18474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "math.h" 19474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "vp8/common/common.h" 20474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "ratectrl.h" 21474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "vp8/common/entropymode.h" 22474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "vpx_mem/vpx_mem.h" 23474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "vp8/common/systemdependent.h" 24474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#include "encodemv.h" 25474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 26474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 27474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#define MIN_BPB_FACTOR 0.01 28474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#define MAX_BPB_FACTOR 50 29474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 30474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgextern const MB_PREDICTION_MODE vp8_mode_order[MAX_MODES]; 31474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 32474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 33474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 34474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#ifdef MODE_STATS 35474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgextern int y_modes[5]; 36474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgextern int uv_modes[4]; 37474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgextern int b_modes[10]; 38474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 39474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgextern int inter_y_modes[10]; 40474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgextern int inter_uv_modes[4]; 41474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgextern int inter_b_modes[10]; 42474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 43474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 44ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org/* Bits Per MB at different Q (Multiplied by 512) */ 45474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#define BPER_MB_NORMBITS 9 46474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 47ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org/* Work in progress recalibration of baseline rate tables based on 48ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * the assumption that bits per mb is inversely proportional to the 49ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * quantizer value. 50ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 51474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgconst int vp8_bits_per_mb[2][QINDEX_RANGE] = 52474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 53ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Intra case 450000/Qintra */ 54474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 55474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1125000,900000, 750000, 642857, 562500, 500000, 450000, 450000, 56474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 409090, 375000, 346153, 321428, 300000, 281250, 264705, 264705, 57474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 250000, 236842, 225000, 225000, 214285, 214285, 204545, 204545, 58474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 195652, 195652, 187500, 180000, 180000, 173076, 166666, 160714, 59474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 155172, 150000, 145161, 140625, 136363, 132352, 128571, 125000, 60474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 121621, 121621, 118421, 115384, 112500, 109756, 107142, 104651, 61474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 102272, 100000, 97826, 97826, 95744, 93750, 91836, 90000, 62474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 88235, 86538, 84905, 83333, 81818, 80357, 78947, 77586, 63474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 76271, 75000, 73770, 72580, 71428, 70312, 69230, 68181, 64474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 67164, 66176, 65217, 64285, 63380, 62500, 61643, 60810, 65474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 60000, 59210, 59210, 58441, 57692, 56962, 56250, 55555, 66474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 54878, 54216, 53571, 52941, 52325, 51724, 51136, 50561, 67474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 49450, 48387, 47368, 46875, 45918, 45000, 44554, 44117, 68474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 43269, 42452, 41666, 40909, 40178, 39473, 38793, 38135, 69474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 36885, 36290, 35714, 35156, 34615, 34090, 33582, 33088, 70474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 32608, 32142, 31468, 31034, 30405, 29801, 29220, 28662, 71474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org }, 72ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Inter case 285000/Qinter */ 73474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 74474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 712500, 570000, 475000, 407142, 356250, 316666, 285000, 259090, 75474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 237500, 219230, 203571, 190000, 178125, 167647, 158333, 150000, 76474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 142500, 135714, 129545, 123913, 118750, 114000, 109615, 105555, 77474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 101785, 98275, 95000, 91935, 89062, 86363, 83823, 81428, 78474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 79166, 77027, 75000, 73076, 71250, 69512, 67857, 66279, 79474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 64772, 63333, 61956, 60638, 59375, 58163, 57000, 55882, 80474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 54807, 53773, 52777, 51818, 50892, 50000, 49137, 47500, 81474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 45967, 44531, 43181, 41911, 40714, 39583, 38513, 37500, 82474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 36538, 35625, 34756, 33928, 33139, 32386, 31666, 30978, 83474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 30319, 29687, 29081, 28500, 27941, 27403, 26886, 26388, 84474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 25909, 25446, 25000, 24568, 23949, 23360, 22800, 22265, 85474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 21755, 21268, 20802, 20357, 19930, 19520, 19127, 18750, 86474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 18387, 18037, 17701, 17378, 17065, 16764, 16473, 16101, 87474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 15745, 15405, 15079, 14766, 14467, 14179, 13902, 13636, 88474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 13380, 13133, 12895, 12666, 12445, 12179, 11924, 11632, 89474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 11445, 11220, 11003, 10795, 10594, 10401, 10215, 10035, 90474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 91474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org}; 92474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 93474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic const int kf_boost_qadjustment[QINDEX_RANGE] = 94474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 95474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 128, 129, 130, 131, 132, 133, 134, 135, 96474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 136, 137, 138, 139, 140, 141, 142, 143, 97474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 144, 145, 146, 147, 148, 149, 150, 151, 98474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 152, 153, 154, 155, 156, 157, 158, 159, 99474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 160, 161, 162, 163, 164, 165, 166, 167, 100474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 168, 169, 170, 171, 172, 173, 174, 175, 101474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 176, 177, 178, 179, 180, 181, 182, 183, 102474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 184, 185, 186, 187, 188, 189, 190, 191, 103474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 192, 193, 194, 195, 196, 197, 198, 199, 104474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 200, 200, 201, 201, 202, 203, 203, 203, 105474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 204, 204, 205, 205, 206, 206, 207, 207, 106474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 208, 208, 209, 209, 210, 210, 211, 211, 107474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 212, 212, 213, 213, 214, 214, 215, 215, 108474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 216, 216, 217, 217, 218, 218, 219, 219, 109474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 220, 220, 220, 220, 220, 220, 220, 220, 110474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 220, 220, 220, 220, 220, 220, 220, 220, 111474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org}; 112474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 113ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org/* #define GFQ_ADJUSTMENT (Q+100) */ 114474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#define GFQ_ADJUSTMENT vp8_gf_boost_qadjustment[Q] 115474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgconst int vp8_gf_boost_qadjustment[QINDEX_RANGE] = 116474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 117474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 80, 82, 84, 86, 88, 90, 92, 94, 118474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 96, 97, 98, 99, 100, 101, 102, 103, 119474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 104, 105, 106, 107, 108, 109, 110, 111, 120474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 112, 113, 114, 115, 116, 117, 118, 119, 121474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 120, 121, 122, 123, 124, 125, 126, 127, 122474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 128, 129, 130, 131, 132, 133, 134, 135, 123474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 136, 137, 138, 139, 140, 141, 142, 143, 124474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 144, 145, 146, 147, 148, 149, 150, 151, 125474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 152, 153, 154, 155, 156, 157, 158, 159, 126474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 160, 161, 162, 163, 164, 165, 166, 167, 127474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 168, 169, 170, 171, 172, 173, 174, 175, 128474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 176, 177, 178, 179, 180, 181, 182, 183, 129474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 184, 184, 185, 185, 186, 186, 187, 187, 130474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 188, 188, 189, 189, 190, 190, 191, 191, 131474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 192, 192, 193, 193, 194, 194, 194, 194, 132474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 195, 195, 196, 196, 197, 197, 198, 198 133474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org}; 134474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 135474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org/* 136474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgconst int vp8_gf_boost_qadjustment[QINDEX_RANGE] = 137474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 138474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 100,101,102,103,104,105,105,106, 139474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 106,107,107,108,109,109,110,111, 140474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 112,113,114,115,116,117,118,119, 141474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 120,121,122,123,124,125,126,127, 142474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 128,129,130,131,132,133,134,135, 143474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 136,137,138,139,140,141,142,143, 144474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 144,145,146,147,148,149,150,151, 145474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 152,153,154,155,156,157,158,159, 146474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 160,161,162,163,164,165,166,167, 147474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 168,169,170,170,171,171,172,172, 148474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 173,173,173,174,174,174,175,175, 149474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 175,176,176,176,177,177,177,177, 150474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 178,178,179,179,180,180,181,181, 151474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 182,182,183,183,184,184,185,185, 152474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 186,186,187,187,188,188,189,189, 153474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 190,190,191,191,192,192,193,193, 154474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org}; 155474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org*/ 156474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 157474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic const int kf_gf_boost_qlimits[QINDEX_RANGE] = 158474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 159474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 150, 155, 160, 165, 170, 175, 180, 185, 160474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 190, 195, 200, 205, 210, 215, 220, 225, 161474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 230, 235, 240, 245, 250, 255, 260, 265, 162474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 270, 275, 280, 285, 290, 295, 300, 305, 163474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 310, 320, 330, 340, 350, 360, 370, 380, 164474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 390, 400, 410, 420, 430, 440, 450, 460, 165474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 470, 480, 490, 500, 510, 520, 530, 540, 166474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 550, 560, 570, 580, 590, 600, 600, 600, 167474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 600, 600, 600, 600, 600, 600, 600, 600, 168474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 600, 600, 600, 600, 600, 600, 600, 600, 169474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 600, 600, 600, 600, 600, 600, 600, 600, 170474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 600, 600, 600, 600, 600, 600, 600, 600, 171474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 600, 600, 600, 600, 600, 600, 600, 600, 172474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 600, 600, 600, 600, 600, 600, 600, 600, 173474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 600, 600, 600, 600, 600, 600, 600, 600, 174474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 600, 600, 600, 600, 600, 600, 600, 600, 175474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org}; 176474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 177474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic const int gf_adjust_table[101] = 178474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 179474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 100, 180474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 115, 130, 145, 160, 175, 190, 200, 210, 220, 230, 181474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 240, 260, 270, 280, 290, 300, 310, 320, 330, 340, 182474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 350, 360, 370, 380, 390, 400, 400, 400, 400, 400, 183474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 184474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 185474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 186474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 187474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 188474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 189474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 190474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org}; 191474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 192474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic const int gf_intra_usage_adjustment[20] = 193474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 194474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 125, 120, 115, 110, 105, 100, 95, 85, 80, 75, 195474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 70, 65, 60, 55, 50, 50, 50, 50, 50, 50, 196474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org}; 197474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 198474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic const int gf_interval_table[101] = 199474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 200474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 7, 201474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 202474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 203474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 204474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 205474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 206474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 207474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 208474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 209474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 210474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 211474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org}; 212474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 213474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic const unsigned int prior_key_frame_weight[KEY_FRAME_CONTEXT] = { 1, 2, 3, 4, 5 }; 214474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 215474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 216474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_save_coding_context(VP8_COMP *cpi) 217474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 218474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org CODING_CONTEXT *const cc = & cpi->coding_context; 219474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 220ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Stores a snapshot of key state variables which can subsequently be 221ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * restored with a call to vp8_restore_coding_context. These functions are 222ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * intended for use in a re-code loop in vp8_compress_frame where the 223ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * quantizer value is adjusted between loop iterations. 224ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 225474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 226474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cc->frames_since_key = cpi->frames_since_key; 227474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cc->filter_level = cpi->common.filter_level; 228474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cc->frames_till_gf_update_due = cpi->frames_till_gf_update_due; 22947265f8fe3a36a426773454ad90d20c9aa616c24johannkoenig@chromium.org cc->frames_since_golden = cpi->frames_since_golden; 230474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 231474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->mvc, cpi->common.fc.mvc); 232ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org vp8_copy(cc->mvcosts, cpi->rd_costs.mvcosts); 233474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 234474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->ymode_prob, cpi->common.fc.ymode_prob); 235474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->uv_mode_prob, cpi->common.fc.uv_mode_prob); 236474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 237d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org vp8_copy(cc->ymode_count, cpi->mb.ymode_count); 238d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org vp8_copy(cc->uv_mode_count, cpi->mb.uv_mode_count); 239474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 240474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 241ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Stats */ 242474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#ifdef MODE_STATS 243474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->y_modes, y_modes); 244474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->uv_modes, uv_modes); 245474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->b_modes, b_modes); 246474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->inter_y_modes, inter_y_modes); 247474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->inter_uv_modes, inter_uv_modes); 248474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cc->inter_b_modes, inter_b_modes); 249474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 250474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 251474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cc->this_frame_percent_intra = cpi->this_frame_percent_intra; 252474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 253474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 254474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 255474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_restore_coding_context(VP8_COMP *cpi) 256474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 257474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org CODING_CONTEXT *const cc = & cpi->coding_context; 258474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 259ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Restore key state variables to the snapshot state stored in the 260ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * previous call to vp8_save_coding_context. 261ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 262474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 263474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_since_key = cc->frames_since_key; 264474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->common.filter_level = cc->filter_level; 265474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due = cc->frames_till_gf_update_due; 26647265f8fe3a36a426773454ad90d20c9aa616c24johannkoenig@chromium.org cpi->frames_since_golden = cc->frames_since_golden; 267474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 268474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cpi->common.fc.mvc, cc->mvc); 269474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 270ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org vp8_copy(cpi->rd_costs.mvcosts, cc->mvcosts); 271474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 272474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cpi->common.fc.ymode_prob, cc->ymode_prob); 273474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(cpi->common.fc.uv_mode_prob, cc->uv_mode_prob); 274474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 275d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org vp8_copy(cpi->mb.ymode_count, cc->ymode_count); 276d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org vp8_copy(cpi->mb.uv_mode_count, cc->uv_mode_count); 277474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 278ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Stats */ 279474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#ifdef MODE_STATS 280474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(y_modes, cc->y_modes); 281474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(uv_modes, cc->uv_modes); 282474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(b_modes, cc->b_modes); 283474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(inter_y_modes, cc->inter_y_modes); 284474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(inter_uv_modes, cc->inter_uv_modes); 285474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_copy(inter_b_modes, cc->inter_b_modes); 286474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 287474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 288474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 289474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_percent_intra = cc->this_frame_percent_intra; 290474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 291474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 292474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 293474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_setup_key_frame(VP8_COMP *cpi) 294474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 295ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Setup for Key frame: */ 296474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 297474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_default_coef_probs(& cpi->common); 298167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org 299474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vpx_memcpy(cpi->common.fc.mvc, vp8_default_mv_context, sizeof(vp8_default_mv_context)); 300474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 301474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int flag[2] = {1, 1}; 302474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_build_component_cost_table(cpi->mb.mvcost, (const MV_CONTEXT *) cpi->common.fc.mvc, flag); 303474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 304474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 305ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Make sure we initialize separate contexts for altref,gold, and normal. 306ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * TODO shouldn't need 3 different copies of structure to do this! 307ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 308167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org vpx_memcpy(&cpi->lfc_a, &cpi->common.fc, sizeof(cpi->common.fc)); 309167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org vpx_memcpy(&cpi->lfc_g, &cpi->common.fc, sizeof(cpi->common.fc)); 310167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org vpx_memcpy(&cpi->lfc_n, &cpi->common.fc, sizeof(cpi->common.fc)); 311167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org 312474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->common.filter_level = cpi->common.base_qindex * 3 / 8 ; 313474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 314ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Provisional interval before next GF */ 315474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->auto_gold) 316474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due = cpi->baseline_gf_interval; 317474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 318ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org cpi->frames_till_gf_update_due = DEFAULT_GF_INTERVAL; 319474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 320167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->common.refresh_golden_frame = 1; 321167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->common.refresh_alt_ref_frame = 1; 322474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 323474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 324474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 325474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic int estimate_bits_at_q(int frame_kind, int Q, int MBs, 326474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double correction_factor) 327474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 328474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Bpm = (int)(.5 + correction_factor * vp8_bits_per_mb[frame_kind][Q]); 329474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 330474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* Attempt to retain reasonable accuracy without overflow. The cutoff is 331474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * chosen such that the maximum product of Bpm and MBs fits 31 bits. The 332474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * largest Bpm takes 20 bits. 333474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org */ 334474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (MBs > (1 << 11)) 335474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org return (Bpm >> BPER_MB_NORMBITS) * MBs; 336474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 337474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org return (Bpm * MBs) >> BPER_MB_NORMBITS; 338474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 339474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 340474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 341474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic void calc_iframe_target_size(VP8_COMP *cpi) 342474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 343ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* boost defaults to half second */ 344474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int kf_boost; 345ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org uint64_t target; 346474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 347ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Clear down mmx registers to allow floating point in what follows */ 348ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org vp8_clear_system_state(); 349474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 350474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.fixed_q >= 0) 351474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 352474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Q = cpi->oxcf.key_q; 353474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 354474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org target = estimate_bits_at_q(INTRA_FRAME, Q, cpi->common.MBs, 355474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->key_frame_rate_correction_factor); 356474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 357474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (cpi->pass == 2) 358474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 359ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* New Two pass RC */ 360474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org target = cpi->per_frame_bandwidth; 361474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 362ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* First Frame is a special case */ 363474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (cpi->common.current_video_frame == 0) 364474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 365474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* 1 Pass there is no information on which to base size so use 366474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * bandwidth per second * fraction of the initial buffer 367474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * level 368474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org */ 369474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org target = cpi->oxcf.starting_buffer_level / 2; 370474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 371474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if(target > cpi->oxcf.target_bandwidth * 3 / 2) 372474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org target = cpi->oxcf.target_bandwidth * 3 / 2; 373474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 374474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 375474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 376ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* if this keyframe was forced, use a more recent Q estimate */ 377474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Q = (cpi->common.frame_flags & FRAMEFLAGS_KEY) 378474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ? cpi->avg_frame_qindex : cpi->ni_av_qi; 379474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 380ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org int initial_boost = 32; /* |3.0 * per_frame_bandwidth| */ 381ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Boost depends somewhat on frame rate: only used for 1 layer case. */ 3825c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org if (cpi->oxcf.number_of_layers == 1) { 38347265f8fe3a36a426773454ad90d20c9aa616c24johannkoenig@chromium.org kf_boost = MAX(initial_boost, (int)(2 * cpi->output_framerate - 16)); 3845c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org } 3855c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org else { 386ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Initial factor: set target size to: |3.0 * per_frame_bandwidth|. */ 3875c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org kf_boost = initial_boost; 3885c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org } 389474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 390ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* adjustment up based on q: this factor ranges from ~1.2 to 2.2. */ 391474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org kf_boost = kf_boost * kf_boost_qadjustment[Q] / 100; 392474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 393ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* frame separation adjustment ( down) */ 39447265f8fe3a36a426773454ad90d20c9aa616c24johannkoenig@chromium.org if (cpi->frames_since_key < cpi->output_framerate / 2) 395474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org kf_boost = (int)(kf_boost 39647265f8fe3a36a426773454ad90d20c9aa616c24johannkoenig@chromium.org * cpi->frames_since_key / (cpi->output_framerate / 2)); 397474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 398ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Minimal target size is |2* per_frame_bandwidth|. */ 399474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (kf_boost < 16) 400474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org kf_boost = 16; 401474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 402474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org target = ((16 + kf_boost) * cpi->per_frame_bandwidth) >> 4; 403474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 404474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 405474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 406474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.rc_max_intra_bitrate_pct) 407474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 408474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int max_rate = cpi->per_frame_bandwidth 409474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * cpi->oxcf.rc_max_intra_bitrate_pct / 100; 410474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 411474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (target > max_rate) 412474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org target = max_rate; 413474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 414474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 415ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org cpi->this_frame_target = (int)target; 416474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 417ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* TODO: if we separate rate targeting from Q targetting, move this. 418ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * Reset the active worst quality to the baseline value for key frames. 419ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 420474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->pass != 2) 421474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->worst_quality; 422474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 423474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#if 0 424474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 425474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org FILE *f; 426474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 427474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org f = fopen("kf_boost.stt", "a"); 428474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fprintf(f, " %8u %10d %10d %10d\n", 429474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->common.current_video_frame, cpi->gfu_boost, cpi->baseline_gf_interval, cpi->source_alt_ref_pending); 430474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 431474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fclose(f); 432474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 433474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 434474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 435474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 436474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 437ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org/* Do the best we can to define the parameters for the next GF based on what 438ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * information we have available. 439ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 440474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic void calc_gf_params(VP8_COMP *cpi) 441474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 442474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Q = (cpi->oxcf.fixed_q < 0) ? cpi->last_q[INTER_FRAME] : cpi->oxcf.fixed_q; 443474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Boost = 0; 444474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 445ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org int gf_frame_useage = 0; /* Golden frame useage since last GF */ 446474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int tot_mbs = cpi->recent_ref_frame_usage[INTRA_FRAME] + 447474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->recent_ref_frame_usage[LAST_FRAME] + 448474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->recent_ref_frame_usage[GOLDEN_FRAME] + 449474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->recent_ref_frame_usage[ALTREF_FRAME]; 450474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 451474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int pct_gf_active = (100 * cpi->gf_active_count) / (cpi->common.mb_rows * cpi->common.mb_cols); 452474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 453474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (tot_mbs) 454474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org gf_frame_useage = (cpi->recent_ref_frame_usage[GOLDEN_FRAME] + cpi->recent_ref_frame_usage[ALTREF_FRAME]) * 100 / tot_mbs; 455474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 456474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (pct_gf_active > gf_frame_useage) 457474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org gf_frame_useage = pct_gf_active; 458474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 459ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Not two pass */ 460474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->pass != 2) 461474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 462ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Single Pass lagged mode: TBD */ 463167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if (0) 464474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 465474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 466474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 467ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Single Pass compression: Has to use current and historical data */ 468474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 469474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 470474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#if 0 471ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Experimental code */ 472474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int index = cpi->one_pass_frame_index; 473474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int frames_to_scan = (cpi->max_gf_interval <= MAX_LAG_BUFFERS) ? cpi->max_gf_interval : MAX_LAG_BUFFERS; 474474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 475ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* ************** Experimental code - incomplete */ 476474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* 477474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double decay_val = 1.0; 478474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double IIAccumulator = 0.0; 479474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double last_iiaccumulator = 0.0; 480474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double IIRatio; 481474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 482474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->one_pass_frame_index = cpi->common.current_video_frame%MAX_LAG_BUFFERS; 483474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 484474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org for ( i = 0; i < (frames_to_scan - 1); i++ ) 485474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 486474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ( index < 0 ) 487474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org index = MAX_LAG_BUFFERS; 488474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org index --; 489474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 490474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ( cpi->one_pass_frame_stats[index].frame_coded_error > 0.0 ) 491474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 492474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org IIRatio = cpi->one_pass_frame_stats[index].frame_intra_error / cpi->one_pass_frame_stats[index].frame_coded_error; 493474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 494474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ( IIRatio > 30.0 ) 495474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org IIRatio = 30.0; 496474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 497474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 498474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org IIRatio = 30.0; 499474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 500474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org IIAccumulator += IIRatio * decay_val; 501474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 502474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org decay_val = decay_val * cpi->one_pass_frame_stats[index].frame_pcnt_inter; 503474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 504474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ( (i > MIN_GF_INTERVAL) && 505474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ((IIAccumulator - last_iiaccumulator) < 2.0) ) 506474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 507474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org break; 508474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 509474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org last_iiaccumulator = IIAccumulator; 510474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 511474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 512474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Boost = IIAccumulator*100.0/16.0; 513474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->baseline_gf_interval = i; 514474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 515474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org */ 516474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#else 517474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 518474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /*************************************************************/ 519ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* OLD code */ 520474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 521ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Adjust boost based upon ambient Q */ 522474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Boost = GFQ_ADJUSTMENT; 523474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 524ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Adjust based upon most recently measure intra useage */ 525474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Boost = Boost * gf_intra_usage_adjustment[(cpi->this_frame_percent_intra < 15) ? cpi->this_frame_percent_intra : 14] / 100; 526474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 527ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Adjust gf boost based upon GF usage since last GF */ 528474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Boost = Boost * gf_adjust_table[gf_frame_useage] / 100; 529474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 530474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 531474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 532ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* golden frame boost without recode loop often goes awry. be 533ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * safe by keeping numbers down. 534ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 535474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (!cpi->sf.recode_loop) 536474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 537474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->compressor_speed == 2) 538474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Boost = Boost / 2; 539474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 540474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 541ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Apply an upper limit based on Q for 1 pass encodes */ 542474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (Boost > kf_gf_boost_qlimits[Q] && (cpi->pass == 0)) 543474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Boost = kf_gf_boost_qlimits[Q]; 544474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 545ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Apply lower limits to boost. */ 546474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (Boost < 110) 547474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Boost = 110; 548474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 549ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Note the boost used */ 550474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->last_boost = Boost; 551474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 552474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 553474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 554ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Estimate next interval 555ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * This is updated once the real frame size/boost is known. 556ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 557474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.fixed_q == -1) 558474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 559ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org if (cpi->pass == 2) /* 2 Pass */ 560474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 561474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due = cpi->baseline_gf_interval; 562474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 563ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org else /* 1 Pass */ 564474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 565474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due = cpi->baseline_gf_interval; 566474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 567474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->last_boost > 750) 568474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due++; 569474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 570474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->last_boost > 1000) 571474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due++; 572474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 573474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->last_boost > 1250) 574474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due++; 575474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 576474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->last_boost >= 1500) 577474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due ++; 578474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 579474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (gf_interval_table[gf_frame_useage] > cpi->frames_till_gf_update_due) 580474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due = gf_interval_table[gf_frame_useage]; 581474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 582474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->frames_till_gf_update_due > cpi->max_gf_interval) 583474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due = cpi->max_gf_interval; 584474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 585474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 586474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 587474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_till_gf_update_due = cpi->baseline_gf_interval; 588474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 589ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* ARF on or off */ 590474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->pass != 2) 591474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 592ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* For now Alt ref is not allowed except in 2 pass modes. */ 593167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->source_alt_ref_pending = 0; 594474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 595474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /*if ( cpi->oxcf.fixed_q == -1) 596474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 597474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ( cpi->oxcf.play_alternate && (cpi->last_boost > (100 + (AF_THRESH*cpi->frames_till_gf_update_due)) ) ) 598167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->source_alt_ref_pending = 1; 599474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 600167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->source_alt_ref_pending = 0; 601474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org }*/ 602474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 603474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 604474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 605474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 606474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic void calc_pframe_target_size(VP8_COMP *cpi) 607474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 608474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int min_frame_target; 609167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org int old_per_frame_bandwidth = cpi->per_frame_bandwidth; 610167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org 611167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if ( cpi->current_layer > 0) 612167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->per_frame_bandwidth = 613167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->layer_context[cpi->current_layer].avg_frame_size_for_layer; 614474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 615474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org min_frame_target = 0; 616474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 617474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->pass == 2) 618474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 619474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org min_frame_target = cpi->min_frame_bandwidth; 620474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 621474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (min_frame_target < (cpi->av_per_frame_bandwidth >> 5)) 622474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org min_frame_target = cpi->av_per_frame_bandwidth >> 5; 623474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 624474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (min_frame_target < cpi->per_frame_bandwidth / 4) 625474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org min_frame_target = cpi->per_frame_bandwidth / 4; 626474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 627474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 628ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Special alt reference frame case */ 629167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if((cpi->common.refresh_alt_ref_frame) && (cpi->oxcf.number_of_layers == 1)) 630474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 631474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->pass == 2) 632474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 633ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Per frame bit target for the alt ref frame */ 634ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org cpi->per_frame_bandwidth = cpi->twopass.gf_bits; 635474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = cpi->per_frame_bandwidth; 636474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 637474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 638474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* One Pass ??? TBD */ 639474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 640474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 641ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Normal frames (gf,and inter) */ 642474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 643474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 644ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* 2 pass */ 645474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->pass == 2) 646474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 647474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = cpi->per_frame_bandwidth; 648474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 649ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* 1 pass */ 650474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 651474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 6521929f88e772d51271e69324816701e01c9e7c579johannkoenig@chromium.org int Adjustment; 653ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Make rate adjustment to recover bits spent in key frame 654ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * Test to see if the key frame inter data rate correction 655ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * should still be in force 656ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 657474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->kf_overspend_bits > 0) 658474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 659474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Adjustment = (cpi->kf_bitrate_adjustment <= cpi->kf_overspend_bits) ? cpi->kf_bitrate_adjustment : cpi->kf_overspend_bits; 660474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 661474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (Adjustment > (cpi->per_frame_bandwidth - min_frame_target)) 662474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Adjustment = (cpi->per_frame_bandwidth - min_frame_target); 663474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 664474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->kf_overspend_bits -= Adjustment; 665474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 666ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Calculate an inter frame bandwidth target for the next 667ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * few frames designed to recover any extra bits spent on 668ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * the key frame. 669ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 670474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = cpi->per_frame_bandwidth - Adjustment; 671474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 672474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->this_frame_target < min_frame_target) 673474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = min_frame_target; 674474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 675474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 676474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = cpi->per_frame_bandwidth; 677474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 678ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* If appropriate make an adjustment to recover bits spent on a 679ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * recent GF 680ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 681474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((cpi->gf_overspend_bits > 0) && (cpi->this_frame_target > min_frame_target)) 682474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 6831929f88e772d51271e69324816701e01c9e7c579johannkoenig@chromium.org Adjustment = (cpi->non_gf_bitrate_adjustment <= cpi->gf_overspend_bits) ? cpi->non_gf_bitrate_adjustment : cpi->gf_overspend_bits; 684474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 685474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (Adjustment > (cpi->this_frame_target - min_frame_target)) 686474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Adjustment = (cpi->this_frame_target - min_frame_target); 687474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 688474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->gf_overspend_bits -= Adjustment; 689474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target -= Adjustment; 690474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 691474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 692ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Apply small + and - boosts for non gf frames */ 693474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((cpi->last_boost > 150) && (cpi->frames_till_gf_update_due > 0) && 694474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->current_gf_interval >= (MIN_GF_INTERVAL << 1))) 695474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 696ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* % Adjustment limited to the range 1% to 10% */ 697474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Adjustment = (cpi->last_boost - 100) >> 5; 698474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 699474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (Adjustment < 1) 700474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Adjustment = 1; 701474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (Adjustment > 10) 702474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Adjustment = 10; 703474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 704ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Convert to bits */ 705474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Adjustment = (cpi->this_frame_target * Adjustment) / 100; 706474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 707474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (Adjustment > (cpi->this_frame_target - min_frame_target)) 708474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Adjustment = (cpi->this_frame_target - min_frame_target); 709474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 71047265f8fe3a36a426773454ad90d20c9aa616c24johannkoenig@chromium.org if (cpi->frames_since_golden == (cpi->current_gf_interval >> 1)) 711474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target += ((cpi->current_gf_interval - 1) * Adjustment); 712474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 713474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target -= Adjustment; 714474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 715474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 716474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 717474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 718ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Sanity check that the total sum of adjustments is not above the 719ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * maximum allowed That is that having allowed for KF and GF penalties 720ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * we have not pushed the current interframe target to low. If the 721ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * adjustment we apply here is not capable of recovering all the extra 722ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * bits we have spent in the KF or GF then the remainder will have to 723ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * be recovered over a longer time span via other buffer / rate control 724ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * mechanisms. 725ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 726474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->this_frame_target < min_frame_target) 727474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = min_frame_target; 728474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 729474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (!cpi->common.refresh_alt_ref_frame) 730ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Note the baseline target data rate for this inter frame. */ 731474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->inter_frame_target = cpi->this_frame_target; 732474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 733ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* One Pass specific code */ 734474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->pass == 0) 735474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 736ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Adapt target frame size with respect to any buffering constraints: */ 737474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->buffered_mode) 738474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 739ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org int one_percent_bits = (int) 740ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org (1 + cpi->oxcf.optimal_buffer_level / 100); 741474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 742474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((cpi->buffer_level < cpi->oxcf.optimal_buffer_level) || 743474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->bits_off_target < cpi->oxcf.optimal_buffer_level)) 744474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 745474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int percent_low = 0; 746474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 747ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Decide whether or not we need to adjust the frame data 748ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * rate target. 749ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * 750ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * If we are are below the optimal buffer fullness level 751ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * and adherence to buffering constraints is important to 752ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * the end usage then adjust the per frame target. 753ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 754474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) && 755474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->buffer_level < cpi->oxcf.optimal_buffer_level)) 756474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 757ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org percent_low = (int) 758ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org ((cpi->oxcf.optimal_buffer_level - cpi->buffer_level) / 759ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org one_percent_bits); 760474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 761ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Are we overshooting the long term clip data rate... */ 762474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (cpi->bits_off_target < 0) 763474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 764ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Adjust per frame data target downwards to compensate. */ 765474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org percent_low = (int)(100 * -cpi->bits_off_target / 766474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->total_byte_count * 8)); 767474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 768474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 769474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (percent_low > cpi->oxcf.under_shoot_pct) 770474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org percent_low = cpi->oxcf.under_shoot_pct; 771474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (percent_low < 0) 772474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org percent_low = 0; 773474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 774ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* lower the target bandwidth for this frame. */ 775167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->this_frame_target -= 776167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org (cpi->this_frame_target * percent_low) / 200; 777474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 778ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Are we using allowing control of active_worst_allowed_q 779ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * according to buffer level. 780ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 781167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if (cpi->auto_worst_q && cpi->ni_frames > 150) 782474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 783ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org int64_t critical_buffer_level; 784ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org 785ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* For streaming applications the most important factor is 786ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * cpi->buffer_level as this takes into account the 787ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * specified short term buffering constraints. However, 788ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * hitting the long term clip data rate target is also 789ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * important. 790ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 791474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) 792474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 793ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Take the smaller of cpi->buffer_level and 794ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * cpi->bits_off_target 795ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 796474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org critical_buffer_level = 797474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->buffer_level < cpi->bits_off_target) 798474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ? cpi->buffer_level : cpi->bits_off_target; 799474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 800ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* For local file playback short term buffering constraints 801ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * are less of an issue 802ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 803474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 804474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 805ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Consider only how we are doing for the clip as a 806ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * whole 807ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 808474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org critical_buffer_level = cpi->bits_off_target; 809474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 810474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 811ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Set the active worst quality based upon the selected 812ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * buffer fullness number. 813ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 814474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (critical_buffer_level < cpi->oxcf.optimal_buffer_level) 815474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 816474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ( critical_buffer_level > 817474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->oxcf.optimal_buffer_level >> 2) ) 818474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 819474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int64_t qadjustment_range = 820474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->worst_quality - cpi->ni_av_qi; 821474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int64_t above_base = 822474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (critical_buffer_level - 823474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->oxcf.optimal_buffer_level >> 2)); 824474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 825ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Step active worst quality down from 826ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * cpi->ni_av_qi when (critical_buffer_level == 827ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * cpi->optimal_buffer_level) to 828ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * cpi->worst_quality when 829ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * (critical_buffer_level == 830ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * cpi->optimal_buffer_level >> 2) 831ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 832474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = 833474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->worst_quality - 834ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org (int)((qadjustment_range * above_base) / 835474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->oxcf.optimal_buffer_level*3>>2)); 836474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 837474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 838474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 839474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->worst_quality; 840474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 841474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 842474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 843474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 844474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->ni_av_qi; 845474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 846474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 847474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 848474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 849474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->worst_quality; 850474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 851474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 852474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 853474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 854474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int percent_high = 0; 855474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 856474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) 857474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org && (cpi->buffer_level > cpi->oxcf.optimal_buffer_level)) 858474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 859ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org percent_high = (int)((cpi->buffer_level 860474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org - cpi->oxcf.optimal_buffer_level) 861ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org / one_percent_bits); 862474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 863474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (cpi->bits_off_target > cpi->oxcf.optimal_buffer_level) 864474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 865474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org percent_high = (int)((100 * cpi->bits_off_target) 866474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org / (cpi->total_byte_count * 8)); 867474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 868474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 869474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (percent_high > cpi->oxcf.over_shoot_pct) 870474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org percent_high = cpi->oxcf.over_shoot_pct; 871474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (percent_high < 0) 872474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org percent_high = 0; 873474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 874474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target += (cpi->this_frame_target * 875167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org percent_high) / 200; 876474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 877ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Are we allowing control of active_worst_allowed_q according 878ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * to buffer level. 879ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 880167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if (cpi->auto_worst_q && cpi->ni_frames > 150) 881474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 882ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* When using the relaxed buffer model stick to the 883ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * user specified value 884ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 885474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->ni_av_qi; 886474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 887474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 888474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 889474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->worst_quality; 890474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 891474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 892474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 893ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Set active_best_quality to prevent quality rising too high */ 894474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_best_quality = cpi->best_quality; 895474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 896ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Worst quality obviously must not be better than best quality */ 897474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->active_worst_quality <= cpi->active_best_quality) 898474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->active_best_quality + 1; 899474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 900167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if(cpi->active_worst_quality > 127) 901167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->active_worst_quality = 127; 902474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 903ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Unbuffered mode (eg. video conferencing) */ 904474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 905474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 906ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Set the active worst quality */ 907474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->worst_quality; 908474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 909474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 910ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Special trap for constrained quality mode 911ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * "active_worst_quality" may never drop below cq level 912ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * for any frame type. 913ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 914474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ( cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY && 915474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality < cpi->cq_target_quality) 916474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 917474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->active_worst_quality = cpi->cq_target_quality; 918474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 919474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 920474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 921ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Test to see if we have to drop a frame 922ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * The auto-drop frame code is only used in buffered mode. 923ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * In unbufferd mode (eg vide conferencing) the descision to 924ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * code or drop a frame is made outside the codec in response to real 925ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * world comms or buffer considerations. 926ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 927ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org if (cpi->drop_frames_allowed && 928474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) && 929ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org ((cpi->common.frame_type != KEY_FRAME))) 930474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 931ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Check for a buffer underun-crisis in which case we have to drop 932ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * a frame 933ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 934474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((cpi->buffer_level < 0)) 935474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 936474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#if 0 937474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org FILE *f = fopen("dec.stt", "a"); 938474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fprintf(f, "%10d %10d %10d %10d ***** BUFFER EMPTY\n", 939474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (int) cpi->common.current_video_frame, 940474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->decimation_factor, cpi->common.horiz_scale, 941474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->buffer_level * 100) / cpi->oxcf.optimal_buffer_level); 942474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fclose(f); 943474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 944167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->drop_frame = 1; 945474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 946ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Update the buffer level variable. */ 947474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->bits_off_target += cpi->av_per_frame_bandwidth; 948167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if (cpi->bits_off_target > cpi->oxcf.maximum_buffer_size) 949ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org cpi->bits_off_target = (int)cpi->oxcf.maximum_buffer_size; 950474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->buffer_level = cpi->bits_off_target; 951d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org 952d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org if (cpi->oxcf.number_of_layers > 1) { 953d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org unsigned int i; 954d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org 955d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org // Propagate bits saved by dropping the frame to higher layers. 956d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org for (i = cpi->current_layer + 1; i < cpi->oxcf.number_of_layers; 957d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org i++) { 958d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org LAYER_CONTEXT *lc = &cpi->layer_context[i]; 959d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org lc->bits_off_target += (int)(lc->target_bandwidth / 960d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org lc->framerate); 961d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org if (lc->bits_off_target > lc->maximum_buffer_size) 962d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org lc->bits_off_target = lc->maximum_buffer_size; 963d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org lc->buffer_level = lc->bits_off_target; 964d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org } 965d851b91d14ef0bd71acdce7b90c9a8f1af1181adjohannkoenig@chromium.org } 966474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 967474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 968474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 969ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Adjust target frame size for Golden Frames: */ 970474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.error_resilient_mode == 0 && 971474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->frames_till_gf_update_due == 0) && !cpi->drop_frame) 972474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 973474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Q = (cpi->oxcf.fixed_q < 0) ? cpi->last_q[INTER_FRAME] : cpi->oxcf.fixed_q; 974474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 975ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org int gf_frame_useage = 0; /* Golden frame useage since last GF */ 976474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int tot_mbs = cpi->recent_ref_frame_usage[INTRA_FRAME] + 977474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->recent_ref_frame_usage[LAST_FRAME] + 978474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->recent_ref_frame_usage[GOLDEN_FRAME] + 979474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->recent_ref_frame_usage[ALTREF_FRAME]; 980474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 981474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int pct_gf_active = (100 * cpi->gf_active_count) / (cpi->common.mb_rows * cpi->common.mb_cols); 982474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 983474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (tot_mbs) 984474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org gf_frame_useage = (cpi->recent_ref_frame_usage[GOLDEN_FRAME] + cpi->recent_ref_frame_usage[ALTREF_FRAME]) * 100 / tot_mbs; 985474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 986474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (pct_gf_active > gf_frame_useage) 987474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org gf_frame_useage = pct_gf_active; 988474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 989ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Is a fixed manual GF frequency being used */ 990474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->auto_gold) 991474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 992ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* For one pass throw a GF if recent frame intra useage is 993ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * low or the GF useage is high 994ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 995474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((cpi->pass == 0) && (cpi->this_frame_percent_intra < 15 || gf_frame_useage >= 5)) 996167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->common.refresh_golden_frame = 1; 997474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 998ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Two pass GF descision */ 999474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (cpi->pass == 2) 1000167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->common.refresh_golden_frame = 1; 1001474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1002474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1003474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#if 0 1004474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1005ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Debug stats */ 1006474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (0) 1007474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1008474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org FILE *f; 1009474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1010474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org f = fopen("gf_useaget.stt", "a"); 1011474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fprintf(f, " %8ld %10ld %10ld %10ld %10ld\n", 1012474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->common.current_video_frame, cpi->gfu_boost, GFQ_ADJUSTMENT, cpi->gfu_boost, gf_frame_useage); 1013474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fclose(f); 1014474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1015474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1016474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 1017474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1018167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if (cpi->common.refresh_golden_frame == 1) 1019474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1020474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#if 0 1021474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1022ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org if (0) 1023474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1024474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org FILE *f; 1025474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1026474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org f = fopen("GFexit.stt", "a"); 1027474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fprintf(f, "%8ld GF coded\n", cpi->common.current_video_frame); 1028474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org fclose(f); 1029474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1030474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1031474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org#endif 1032474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1033474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->auto_adjust_gold_quantizer) 1034474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1035474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org calc_gf_params(cpi); 1036474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1037474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1038ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* If we are using alternate ref instead of gf then do not apply the 1039ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * boost It will instead be applied to the altref update Jims 1040ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * modified boost 1041ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1042474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (!cpi->source_alt_ref_active) 1043474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1044474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.fixed_q < 0) 1045474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1046474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->pass == 2) 1047474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1048ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* The spend on the GF is defined in the two pass 1049ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * code for two pass encodes 1050ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1051ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org cpi->this_frame_target = cpi->per_frame_bandwidth; 1052474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1053474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1054474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1055474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Boost = cpi->last_boost; 1056474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int frames_in_section = cpi->frames_till_gf_update_due + 1; 1057474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int allocation_chunks = (frames_in_section * 100) + (Boost - 100); 1058474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int bits_in_section = cpi->inter_frame_target * frames_in_section; 1059474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1060ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Normalize Altboost and allocations chunck down to 1061ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * prevent overflow 1062ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1063474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (Boost > 1000) 1064474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1065474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Boost /= 2; 1066474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org allocation_chunks /= 2; 1067474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1068474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1069ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Avoid loss of precision but avoid overflow */ 1070474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((bits_in_section >> 7) > allocation_chunks) 1071474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = Boost * (bits_in_section / allocation_chunks); 1072474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1073474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = (Boost * bits_in_section) / allocation_chunks; 1074474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1075474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1076474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1077474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = 1078474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (estimate_bits_at_q(1, Q, cpi->common.MBs, 1.0) 1079474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * cpi->last_boost) / 100; 1080474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1081474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1082ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* If there is an active ARF at this location use the minimum 1083ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * bits on this frame even if it is a contructed arf. 1084ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * The active maximum quantizer insures that an appropriate 1085ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * number of bits will be spent if needed for contstructed ARFs. 1086ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1087474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1088474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1089474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->this_frame_target = 0; 1090474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1091474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1092474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->current_gf_interval = cpi->frames_till_gf_update_due; 1093474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1094474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1095474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1096167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org 1097167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->per_frame_bandwidth = old_per_frame_bandwidth; 1098474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 1099474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1100474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1101474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_update_rate_correction_factors(VP8_COMP *cpi, int damp_var) 1102474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 1103474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Q = cpi->common.base_qindex; 1104474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int correction_factor = 100; 1105474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double rate_correction_factor; 1106474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double adjustment_limit; 1107474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1108474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int projected_size_based_on_q = 0; 1109474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1110ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Clear down mmx registers to allow floating point in what follows */ 1111ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org vp8_clear_system_state(); 1112474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1113474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->common.frame_type == KEY_FRAME) 1114474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1115474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org rate_correction_factor = cpi->key_frame_rate_correction_factor; 1116474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1117474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1118474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1119d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org if (cpi->oxcf.number_of_layers == 1 && 1120d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org (cpi->common.refresh_alt_ref_frame || 1121d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->common.refresh_golden_frame)) 1122474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org rate_correction_factor = cpi->gf_rate_correction_factor; 1123474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1124474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org rate_correction_factor = cpi->rate_correction_factor; 1125474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1126474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1127ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Work out how big we would have expected the frame to be at this Q 1128ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * given the current correction factor. Stay in double to avoid int 1129ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * overflow when values are large 1130ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1131474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org projected_size_based_on_q = (int)(((.5 + rate_correction_factor * vp8_bits_per_mb[cpi->common.frame_type][Q]) * cpi->common.MBs) / (1 << BPER_MB_NORMBITS)); 1132474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1133ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Make some allowance for cpi->zbin_over_quant */ 1134d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org if (cpi->mb.zbin_over_quant > 0) 1135474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1136d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org int Z = cpi->mb.zbin_over_quant; 1137474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double Factor = 0.99; 1138ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org double factor_adjustment = 0.01 / 256.0; 1139474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1140474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (Z > 0) 1141474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1142474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Z --; 1143474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org projected_size_based_on_q = 1144474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (int)(Factor * projected_size_based_on_q); 1145474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Factor += factor_adjustment; 1146474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1147474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (Factor >= 0.999) 1148474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Factor = 0.999; 1149474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1150474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1151474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1152ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Work out a size correction factor. */ 1153474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (projected_size_based_on_q > 0) 1154474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org correction_factor = (100 * cpi->projected_frame_size) / projected_size_based_on_q; 1155474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1156ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* More heavily damped adjustment used if we have been oscillating 1157ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * either side of target 1158ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1159474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org switch (damp_var) 1160474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1161474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org case 0: 1162474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org adjustment_limit = 0.75; 1163474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org break; 1164474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org case 1: 1165474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org adjustment_limit = 0.375; 1166474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org break; 1167474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org case 2: 1168474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org default: 1169474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org adjustment_limit = 0.25; 1170474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org break; 1171474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1172474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1173474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (correction_factor > 102) 1174474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1175ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* We are not already at the worst allowable quality */ 1176474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org correction_factor = (int)(100.5 + ((correction_factor - 100) * adjustment_limit)); 1177474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org rate_correction_factor = ((rate_correction_factor * correction_factor) / 100); 1178474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1179ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Keep rate_correction_factor within limits */ 1180474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (rate_correction_factor > MAX_BPB_FACTOR) 1181474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org rate_correction_factor = MAX_BPB_FACTOR; 1182474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1183474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (correction_factor < 99) 1184474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1185ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* We are not already at the best allowable quality */ 1186474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org correction_factor = (int)(100.5 - ((100 - correction_factor) * adjustment_limit)); 1187474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org rate_correction_factor = ((rate_correction_factor * correction_factor) / 100); 1188474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1189ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Keep rate_correction_factor within limits */ 1190474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (rate_correction_factor < MIN_BPB_FACTOR) 1191474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org rate_correction_factor = MIN_BPB_FACTOR; 1192474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1193474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1194474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->common.frame_type == KEY_FRAME) 1195474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->key_frame_rate_correction_factor = rate_correction_factor; 1196474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1197474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1198d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org if (cpi->oxcf.number_of_layers == 1 && 1199d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org (cpi->common.refresh_alt_ref_frame || 1200d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->common.refresh_golden_frame)) 1201474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->gf_rate_correction_factor = rate_correction_factor; 1202474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1203474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->rate_correction_factor = rate_correction_factor; 1204474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1205474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 1206474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1207474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1208474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgint vp8_regulate_q(VP8_COMP *cpi, int target_bits_per_frame) 1209474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 1210474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int Q = cpi->active_worst_quality; 1211474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1212ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Reset Zbin OQ value */ 1213d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->mb.zbin_over_quant = 0; 1214474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1215474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.fixed_q >= 0) 1216474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1217474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Q = cpi->oxcf.fixed_q; 1218474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1219474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->common.frame_type == KEY_FRAME) 1220474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1221474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Q = cpi->oxcf.key_q; 1222474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1223d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org else if (cpi->oxcf.number_of_layers == 1 && 1224d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->common.refresh_alt_ref_frame) 1225474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1226474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Q = cpi->oxcf.alt_q; 1227474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1228d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org else if (cpi->oxcf.number_of_layers == 1 && 1229d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->common.refresh_golden_frame) 1230474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1231474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Q = cpi->oxcf.gold_q; 1232474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1233474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1234474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1235474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1236474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int i; 1237474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int last_error = INT_MAX; 1238474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int target_bits_per_mb; 1239474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int bits_per_mb_at_this_q; 1240474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double correction_factor; 1241474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1242ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Select the appropriate correction factor based upon type of frame. */ 1243474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->common.frame_type == KEY_FRAME) 1244474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org correction_factor = cpi->key_frame_rate_correction_factor; 1245474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1246474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1247d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org if (cpi->oxcf.number_of_layers == 1 && 1248d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org (cpi->common.refresh_alt_ref_frame || 1249d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->common.refresh_golden_frame)) 1250474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org correction_factor = cpi->gf_rate_correction_factor; 1251474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1252474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org correction_factor = cpi->rate_correction_factor; 1253474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1254474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1255ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Calculate required scaling factor based on target frame size and 1256ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * size of frame produced using previous Q 1257ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1258474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (target_bits_per_frame >= (INT_MAX >> BPER_MB_NORMBITS)) 1259ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Case where we would overflow int */ 1260ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org target_bits_per_mb = (target_bits_per_frame / cpi->common.MBs) << BPER_MB_NORMBITS; 1261474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1262474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org target_bits_per_mb = (target_bits_per_frame << BPER_MB_NORMBITS) / cpi->common.MBs; 1263474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1264474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org i = cpi->active_best_quality; 1265474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1266474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org do 1267474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1268474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org bits_per_mb_at_this_q = (int)(.5 + correction_factor * vp8_bits_per_mb[cpi->common.frame_type][i]); 1269474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1270474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (bits_per_mb_at_this_q <= target_bits_per_mb) 1271474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1272474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((target_bits_per_mb - bits_per_mb_at_this_q) <= last_error) 1273474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Q = i; 1274474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1275474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Q = i - 1; 1276474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1277474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org break; 1278474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1279474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1280474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org last_error = bits_per_mb_at_this_q - target_bits_per_mb; 1281474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1282474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org while (++i <= cpi->active_worst_quality); 1283474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1284474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1285ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* If we are at MAXQ then enable Q over-run which seeks to claw 1286ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * back additional bits through things like the RD multiplier 1287ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * and zero bin size. 1288ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1289474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (Q >= MAXQ) 1290474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1291474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int zbin_oqmax; 1292474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1293474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double Factor = 0.99; 1294ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org double factor_adjustment = 0.01 / 256.0; 1295474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1296474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->common.frame_type == KEY_FRAME) 1297ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org zbin_oqmax = 0; 1298d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org else if (cpi->oxcf.number_of_layers == 1 && 1299d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org (cpi->common.refresh_alt_ref_frame || 1300d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org (cpi->common.refresh_golden_frame && 1301d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org !cpi->source_alt_ref_active))) 1302474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org zbin_oqmax = 16; 1303474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1304474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org zbin_oqmax = ZBIN_OQ_MAX; 1305474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1306474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /*{ 1307474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double Factor = (double)target_bits_per_mb/(double)bits_per_mb_at_this_q; 1308474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org double Oq; 1309474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1310474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Factor = Factor/1.2683; 1311474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1312474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Oq = pow( Factor, (1.0/-0.165) ); 1313474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1314474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ( Oq > zbin_oqmax ) 1315474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Oq = zbin_oqmax; 1316474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1317474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->zbin_over_quant = (int)Oq; 1318474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org }*/ 1319474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1320ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Each incrment in the zbin is assumed to have a fixed effect 1321ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * on bitrate. This is not of course true. The effect will be 1322ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * highly clip dependent and may well have sudden steps. The 1323ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * idea here is to acheive higher effective quantizers than the 1324ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * normal maximum by expanding the zero bin and hence 1325ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * decreasing the number of low magnitude non zero coefficients. 1326ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1327d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org while (cpi->mb.zbin_over_quant < zbin_oqmax) 1328474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1329d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->mb.zbin_over_quant ++; 1330474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1331d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org if (cpi->mb.zbin_over_quant > zbin_oqmax) 1332d348b8d765c019ee7250075d663a83db00c65c08tomfinegan@chromium.org cpi->mb.zbin_over_quant = zbin_oqmax; 1333474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1334ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Adjust bits_per_mb_at_this_q estimate */ 1335474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org bits_per_mb_at_this_q = (int)(Factor * bits_per_mb_at_this_q); 1336474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Factor += factor_adjustment; 1337474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1338474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (Factor >= 0.999) 1339474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org Factor = 0.999; 1340474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1341ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Break out if we get down to the target rate */ 1342ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org if (bits_per_mb_at_this_q <= target_bits_per_mb) 1343474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org break; 1344474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1345474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1346474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1347474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1348474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1349474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org return Q; 1350474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 1351474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1352474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1353474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgstatic int estimate_keyframe_frequency(VP8_COMP *cpi) 1354474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 1355474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int i; 1356474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1357ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Average key frame frequency */ 1358474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int av_key_frame_frequency = 0; 1359474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1360474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* First key frame at start of sequence is a special case. We have no 1361474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * frequency data. 1362474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org */ 1363474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->key_frame_count == 1) 1364474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1365474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* Assume a default of 1 kf every 2 seconds, or the max kf interval, 1366474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * whichever is smaller. 1367474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org */ 1368474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int key_freq = cpi->oxcf.key_freq>0 ? cpi->oxcf.key_freq : 1; 136947265f8fe3a36a426773454ad90d20c9aa616c24johannkoenig@chromium.org av_key_frame_frequency = 1 + (int)cpi->output_framerate * 2; 1370474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1371474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.auto_key && av_key_frame_frequency > key_freq) 1372fa43a22c16ae2b81f2532c907fb9eb2c1cd2a373fgalligan@chromium.org av_key_frame_frequency = key_freq; 1373474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1374474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->prior_key_frame_distance[KEY_FRAME_CONTEXT - 1] 1375474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org = av_key_frame_frequency; 1376474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1377474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1378474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1379474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org unsigned int total_weight = 0; 1380474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int last_kf_interval = 1381474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org (cpi->frames_since_key > 0) ? cpi->frames_since_key : 1; 1382474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1383474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* reset keyframe context and calculate weighted average of last 1384474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * KEY_FRAME_CONTEXT keyframes 1385474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org */ 1386474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org for (i = 0; i < KEY_FRAME_CONTEXT; i++) 1387474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1388474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (i < KEY_FRAME_CONTEXT - 1) 1389474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->prior_key_frame_distance[i] 1390474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org = cpi->prior_key_frame_distance[i+1]; 1391474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1392474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->prior_key_frame_distance[i] = last_kf_interval; 1393474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1394474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org av_key_frame_frequency += prior_key_frame_weight[i] 1395474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * cpi->prior_key_frame_distance[i]; 1396474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org total_weight += prior_key_frame_weight[i]; 1397474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1398474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1399474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org av_key_frame_frequency /= total_weight; 1400474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1401474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1402fa43a22c16ae2b81f2532c907fb9eb2c1cd2a373fgalligan@chromium.org // TODO (marpan): Given the checks above, |av_key_frame_frequency| 1403fa43a22c16ae2b81f2532c907fb9eb2c1cd2a373fgalligan@chromium.org // should always be above 0. But for now we keep the sanity check in. 1404fa43a22c16ae2b81f2532c907fb9eb2c1cd2a373fgalligan@chromium.org if (av_key_frame_frequency == 0) 1405fa43a22c16ae2b81f2532c907fb9eb2c1cd2a373fgalligan@chromium.org av_key_frame_frequency = 1; 1406474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org return av_key_frame_frequency; 1407474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 1408474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1409474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1410474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_adjust_key_frame_context(VP8_COMP *cpi) 1411474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 1412ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Clear down mmx registers to allow floating point in what follows */ 1413474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vp8_clear_system_state(); 1414474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1415ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Do we have any key frame overspend to recover? */ 1416ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Two-pass overspend handled elsewhere. */ 1417474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if ((cpi->pass != 2) 1418474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org && (cpi->projected_frame_size > cpi->per_frame_bandwidth)) 1419474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1420474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org int overspend; 1421474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1422474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* Update the count of key frame overspend to be recovered in 1423474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * subsequent frames. A portion of the KF overspend is treated as gf 1424474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * overspend (and hence recovered more quickly) as the kf is also a 1425474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * gf. Otherwise the few frames following each kf tend to get more 1426474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org * bits allocated than those following other gfs. 1427474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org */ 1428474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org overspend = (cpi->projected_frame_size - cpi->per_frame_bandwidth); 1429167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org 1430167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if (cpi->oxcf.number_of_layers > 1) 1431167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->kf_overspend_bits += overspend; 1432167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org else 1433167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org { 1434167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->kf_overspend_bits += overspend * 7 / 8; 1435167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->gf_overspend_bits += overspend * 1 / 8; 1436167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org } 1437474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1438474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org /* Work out how much to try and recover per frame. */ 1439474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->kf_bitrate_adjustment = cpi->kf_overspend_bits 1440474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org / estimate_keyframe_frequency(cpi); 1441474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1442474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1443474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->frames_since_key = 0; 1444474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cpi->key_frame_count++; 1445474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 1446474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1447474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1448474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgvoid vp8_compute_frame_size_bounds(VP8_COMP *cpi, int *frame_under_shoot_limit, int *frame_over_shoot_limit) 1449474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 1450ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Set-up bounds on acceptable frame size: */ 1451474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.fixed_q >= 0) 1452474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1453ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Fixed Q scenario: frame size never outranges target 1454ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * (there is no target!) 1455ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1456474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_under_shoot_limit = 0; 1457474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_over_shoot_limit = INT_MAX; 1458474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1459474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1460474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1461474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->common.frame_type == KEY_FRAME) 1462474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1463474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_over_shoot_limit = cpi->this_frame_target * 9 / 8; 1464474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_under_shoot_limit = cpi->this_frame_target * 7 / 8; 1465474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1466474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1467474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1468167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org if (cpi->oxcf.number_of_layers > 1 || 1469167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->common.refresh_alt_ref_frame || 1470167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->common.refresh_golden_frame) 1471474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1472474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_over_shoot_limit = cpi->this_frame_target * 9 / 8; 1473474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_under_shoot_limit = cpi->this_frame_target * 7 / 8; 1474474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1475474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1476474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1477ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* For CBR take buffer fullness into account */ 1478474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) 1479474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1480474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->buffer_level >= ((cpi->oxcf.optimal_buffer_level + cpi->oxcf.maximum_buffer_size) >> 1)) 1481474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1482ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Buffer is too full so relax overshoot and tighten 1483ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * undershoot 1484ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1485474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_over_shoot_limit = cpi->this_frame_target * 12 / 8; 1486474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_under_shoot_limit = cpi->this_frame_target * 6 / 8; 1487474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1488474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else if (cpi->buffer_level <= (cpi->oxcf.optimal_buffer_level >> 1)) 1489474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1490ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Buffer is too low so relax undershoot and tighten 1491ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * overshoot 1492ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1493474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_over_shoot_limit = cpi->this_frame_target * 10 / 8; 1494474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_under_shoot_limit = cpi->this_frame_target * 4 / 8; 1495474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1496474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1497474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1498474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_over_shoot_limit = cpi->this_frame_target * 11 / 8; 1499474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_under_shoot_limit = cpi->this_frame_target * 5 / 8; 1500474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1501474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1502ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* VBR and CQ mode */ 1503ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Note that tighter restrictions here can help quality 1504ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * but hurt encode speed 1505ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 1506474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1507474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1508ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Stron overshoot limit for constrained quality */ 1509474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) 1510474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1511474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_over_shoot_limit = cpi->this_frame_target * 11 / 8; 1512474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_under_shoot_limit = cpi->this_frame_target * 2 / 8; 1513474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1514474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1515474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1516474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_over_shoot_limit = cpi->this_frame_target * 11 / 8; 1517474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org *frame_under_shoot_limit = cpi->this_frame_target * 5 / 8; 1518474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1519474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1520474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1521474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 15225c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org 1523ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* For very small rate targets where the fractional adjustment 1524ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * (eg * 7/8) may be tiny make sure there is at least a minimum 1525ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org * range. 1526ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org */ 15275c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org *frame_over_shoot_limit += 200; 15285c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org *frame_under_shoot_limit -= 200; 15295c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org if ( *frame_under_shoot_limit < 0 ) 15305c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org *frame_under_shoot_limit = 0; 15315c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org 1532474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1533474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 1534474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1535474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1536ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org/* return of 0 means drop frame */ 1537474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgint vp8_pick_frame_size(VP8_COMP *cpi) 1538474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org{ 1539474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org VP8_COMMON *cm = &cpi->common; 1540474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1541474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cm->frame_type == KEY_FRAME) 1542474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org calc_iframe_target_size(cpi); 1543474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org else 1544474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1545474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org calc_pframe_target_size(cpi); 1546474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1547ed759d81a39febed3a8a395386639d54307504aagrunell@chromium.org /* Check if we're dropping the frame: */ 1548474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org if (cpi->drop_frame) 1549474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org { 1550167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org cpi->drop_frame = 0; 1551474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org return 0; 1552474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1553474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org } 1554474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org return 1; 1555474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org} 1556