190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber/* 2f71323e297a928af368937089d3ed71239786f86Andreas Huber * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber * 4f71323e297a928af368937089d3ed71239786f86Andreas Huber * Use of this source code is governed by a BSD-style license 5f71323e297a928af368937089d3ed71239786f86Andreas Huber * that can be found in the LICENSE file in the root of the source 6f71323e297a928af368937089d3ed71239786f86Andreas Huber * tree. An additional intellectual property rights grant can be found 7f71323e297a928af368937089d3ed71239786f86Andreas Huber * in the file PATENTS. All contributing project authors may 8f71323e297a928af368937089d3ed71239786f86Andreas Huber * be found in the AUTHORS file in the root of the source tree. 990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber */ 1090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 1190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 1290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include <stdlib.h> 1390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include <stdio.h> 1490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include <string.h> 1590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include <limits.h> 1690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include <assert.h> 1790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 1890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include "math.h" 1979f15823c34ae1e423108295e416213200bb280fAndreas Huber#include "vp8/common/common.h" 2090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include "ratectrl.h" 2179f15823c34ae1e423108295e416213200bb280fAndreas Huber#include "vp8/common/entropymode.h" 2290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include "vpx_mem/vpx_mem.h" 2379f15823c34ae1e423108295e416213200bb280fAndreas Huber#include "vp8/common/systemdependent.h" 2490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#include "encodemv.h" 2590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#define MIN_BPB_FACTOR 0.01 2890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#define MAX_BPB_FACTOR 50 2990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberextern const MB_PREDICTION_MODE vp8_mode_order[MAX_MODES]; 3190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#ifdef MODE_STATS 3590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberextern int y_modes[5]; 3690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberextern int uv_modes[4]; 3790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberextern int b_modes[10]; 3890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberextern int inter_y_modes[10]; 4090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberextern int inter_uv_modes[4]; 4190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberextern int inter_b_modes[10]; 4290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#endif 4390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 441b362b15af34006e6a11974088a46d42b903418eJohann/* Bits Per MB at different Q (Multiplied by 512) */ 4590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#define BPER_MB_NORMBITS 9 4690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 471b362b15af34006e6a11974088a46d42b903418eJohann/* Work in progress recalibration of baseline rate tables based on 481b362b15af34006e6a11974088a46d42b903418eJohann * the assumption that bits per mb is inversely proportional to the 491b362b15af34006e6a11974088a46d42b903418eJohann * quantizer value. 501b362b15af34006e6a11974088a46d42b903418eJohann */ 5190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberconst int vp8_bits_per_mb[2][QINDEX_RANGE] = 5290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 531b362b15af34006e6a11974088a46d42b903418eJohann /* Intra case 450000/Qintra */ 5490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 5579f15823c34ae1e423108295e416213200bb280fAndreas Huber 1125000,900000, 750000, 642857, 562500, 500000, 450000, 450000, 5679f15823c34ae1e423108295e416213200bb280fAndreas Huber 409090, 375000, 346153, 321428, 300000, 281250, 264705, 264705, 5779f15823c34ae1e423108295e416213200bb280fAndreas Huber 250000, 236842, 225000, 225000, 214285, 214285, 204545, 204545, 5879f15823c34ae1e423108295e416213200bb280fAndreas Huber 195652, 195652, 187500, 180000, 180000, 173076, 166666, 160714, 5979f15823c34ae1e423108295e416213200bb280fAndreas Huber 155172, 150000, 145161, 140625, 136363, 132352, 128571, 125000, 6079f15823c34ae1e423108295e416213200bb280fAndreas Huber 121621, 121621, 118421, 115384, 112500, 109756, 107142, 104651, 6179f15823c34ae1e423108295e416213200bb280fAndreas Huber 102272, 100000, 97826, 97826, 95744, 93750, 91836, 90000, 6279f15823c34ae1e423108295e416213200bb280fAndreas Huber 88235, 86538, 84905, 83333, 81818, 80357, 78947, 77586, 6379f15823c34ae1e423108295e416213200bb280fAndreas Huber 76271, 75000, 73770, 72580, 71428, 70312, 69230, 68181, 6479f15823c34ae1e423108295e416213200bb280fAndreas Huber 67164, 66176, 65217, 64285, 63380, 62500, 61643, 60810, 6579f15823c34ae1e423108295e416213200bb280fAndreas Huber 60000, 59210, 59210, 58441, 57692, 56962, 56250, 55555, 6679f15823c34ae1e423108295e416213200bb280fAndreas Huber 54878, 54216, 53571, 52941, 52325, 51724, 51136, 50561, 6779f15823c34ae1e423108295e416213200bb280fAndreas Huber 49450, 48387, 47368, 46875, 45918, 45000, 44554, 44117, 6879f15823c34ae1e423108295e416213200bb280fAndreas Huber 43269, 42452, 41666, 40909, 40178, 39473, 38793, 38135, 6979f15823c34ae1e423108295e416213200bb280fAndreas Huber 36885, 36290, 35714, 35156, 34615, 34090, 33582, 33088, 7079f15823c34ae1e423108295e416213200bb280fAndreas Huber 32608, 32142, 31468, 31034, 30405, 29801, 29220, 28662, 7190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber }, 721b362b15af34006e6a11974088a46d42b903418eJohann /* Inter case 285000/Qinter */ 7390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 7479f15823c34ae1e423108295e416213200bb280fAndreas Huber 712500, 570000, 475000, 407142, 356250, 316666, 285000, 259090, 7579f15823c34ae1e423108295e416213200bb280fAndreas Huber 237500, 219230, 203571, 190000, 178125, 167647, 158333, 150000, 7679f15823c34ae1e423108295e416213200bb280fAndreas Huber 142500, 135714, 129545, 123913, 118750, 114000, 109615, 105555, 7779f15823c34ae1e423108295e416213200bb280fAndreas Huber 101785, 98275, 95000, 91935, 89062, 86363, 83823, 81428, 7879f15823c34ae1e423108295e416213200bb280fAndreas Huber 79166, 77027, 75000, 73076, 71250, 69512, 67857, 66279, 7979f15823c34ae1e423108295e416213200bb280fAndreas Huber 64772, 63333, 61956, 60638, 59375, 58163, 57000, 55882, 8079f15823c34ae1e423108295e416213200bb280fAndreas Huber 54807, 53773, 52777, 51818, 50892, 50000, 49137, 47500, 8179f15823c34ae1e423108295e416213200bb280fAndreas Huber 45967, 44531, 43181, 41911, 40714, 39583, 38513, 37500, 8279f15823c34ae1e423108295e416213200bb280fAndreas Huber 36538, 35625, 34756, 33928, 33139, 32386, 31666, 30978, 8379f15823c34ae1e423108295e416213200bb280fAndreas Huber 30319, 29687, 29081, 28500, 27941, 27403, 26886, 26388, 8479f15823c34ae1e423108295e416213200bb280fAndreas Huber 25909, 25446, 25000, 24568, 23949, 23360, 22800, 22265, 8579f15823c34ae1e423108295e416213200bb280fAndreas Huber 21755, 21268, 20802, 20357, 19930, 19520, 19127, 18750, 8679f15823c34ae1e423108295e416213200bb280fAndreas Huber 18387, 18037, 17701, 17378, 17065, 16764, 16473, 16101, 8779f15823c34ae1e423108295e416213200bb280fAndreas Huber 15745, 15405, 15079, 14766, 14467, 14179, 13902, 13636, 8879f15823c34ae1e423108295e416213200bb280fAndreas Huber 13380, 13133, 12895, 12666, 12445, 12179, 11924, 11632, 8979f15823c34ae1e423108295e416213200bb280fAndreas Huber 11445, 11220, 11003, 10795, 10594, 10401, 10215, 10035, 9090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 9190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 9290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9379f15823c34ae1e423108295e416213200bb280fAndreas Huberstatic const int kf_boost_qadjustment[QINDEX_RANGE] = 9490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 9590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 128, 129, 130, 131, 132, 133, 134, 135, 9690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 136, 137, 138, 139, 140, 141, 142, 143, 9790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 144, 145, 146, 147, 148, 149, 150, 151, 9890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 152, 153, 154, 155, 156, 157, 158, 159, 9990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 160, 161, 162, 163, 164, 165, 166, 167, 10090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 168, 169, 170, 171, 172, 173, 174, 175, 10190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 176, 177, 178, 179, 180, 181, 182, 183, 10290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 184, 185, 186, 187, 188, 189, 190, 191, 10390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 192, 193, 194, 195, 196, 197, 198, 199, 10490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 200, 200, 201, 201, 202, 203, 203, 203, 10590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 204, 204, 205, 205, 206, 206, 207, 207, 10690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 208, 208, 209, 209, 210, 210, 211, 211, 10790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 212, 212, 213, 213, 214, 214, 215, 215, 10890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 216, 216, 217, 217, 218, 218, 219, 219, 10990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 220, 220, 220, 220, 220, 220, 220, 220, 11090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 220, 220, 220, 220, 220, 220, 220, 220, 11190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 11290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 1131b362b15af34006e6a11974088a46d42b903418eJohann/* #define GFQ_ADJUSTMENT (Q+100) */ 11490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#define GFQ_ADJUSTMENT vp8_gf_boost_qadjustment[Q] 11590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberconst int vp8_gf_boost_qadjustment[QINDEX_RANGE] = 11690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 11790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 80, 82, 84, 86, 88, 90, 92, 94, 11890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 96, 97, 98, 99, 100, 101, 102, 103, 11990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 104, 105, 106, 107, 108, 109, 110, 111, 12090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 112, 113, 114, 115, 116, 117, 118, 119, 12190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 120, 121, 122, 123, 124, 125, 126, 127, 12290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 128, 129, 130, 131, 132, 133, 134, 135, 12390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 136, 137, 138, 139, 140, 141, 142, 143, 12490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 144, 145, 146, 147, 148, 149, 150, 151, 12590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 152, 153, 154, 155, 156, 157, 158, 159, 12690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 160, 161, 162, 163, 164, 165, 166, 167, 12790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 168, 169, 170, 171, 172, 173, 174, 175, 12890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 176, 177, 178, 179, 180, 181, 182, 183, 12990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 184, 184, 185, 185, 186, 186, 187, 187, 13090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 188, 188, 189, 189, 190, 190, 191, 191, 13190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 192, 192, 193, 193, 194, 194, 194, 194, 13290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 195, 195, 196, 196, 197, 197, 198, 198 13390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 13490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber/* 13690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberconst int vp8_gf_boost_qadjustment[QINDEX_RANGE] = 13790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 13890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 100,101,102,103,104,105,105,106, 13990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 106,107,107,108,109,109,110,111, 14090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 112,113,114,115,116,117,118,119, 14190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 120,121,122,123,124,125,126,127, 14290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 128,129,130,131,132,133,134,135, 14390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 136,137,138,139,140,141,142,143, 14490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 144,145,146,147,148,149,150,151, 14590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 152,153,154,155,156,157,158,159, 14690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 160,161,162,163,164,165,166,167, 14790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 168,169,170,170,171,171,172,172, 14890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 173,173,173,174,174,174,175,175, 14990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 175,176,176,176,177,177,177,177, 15090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 178,178,179,179,180,180,181,181, 15190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 182,182,183,183,184,184,185,185, 15290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 186,186,187,187,188,188,189,189, 15390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 190,190,191,191,192,192,193,193, 15490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 15590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber*/ 15690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 15779f15823c34ae1e423108295e416213200bb280fAndreas Huberstatic const int kf_gf_boost_qlimits[QINDEX_RANGE] = 15890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 15990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 150, 155, 160, 165, 170, 175, 180, 185, 16090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 190, 195, 200, 205, 210, 215, 220, 225, 16190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 230, 235, 240, 245, 250, 255, 260, 265, 16290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 270, 275, 280, 285, 290, 295, 300, 305, 16390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 310, 320, 330, 340, 350, 360, 370, 380, 16490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 390, 400, 410, 420, 430, 440, 450, 460, 16590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 470, 480, 490, 500, 510, 520, 530, 540, 16690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 550, 560, 570, 580, 590, 600, 600, 600, 16790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 600, 600, 600, 600, 600, 600, 600, 600, 16890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 600, 600, 600, 600, 600, 600, 600, 600, 16990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 600, 600, 600, 600, 600, 600, 600, 600, 17090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 600, 600, 600, 600, 600, 600, 600, 600, 17190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 600, 600, 600, 600, 600, 600, 600, 600, 17290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 600, 600, 600, 600, 600, 600, 600, 600, 17390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 600, 600, 600, 600, 600, 600, 600, 600, 17490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 600, 600, 600, 600, 600, 600, 600, 600, 17590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 17690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 1771b362b15af34006e6a11974088a46d42b903418eJohann/* % adjustment to target kf size based on seperation from previous frame */ 17879f15823c34ae1e423108295e416213200bb280fAndreas Huberstatic const int kf_boost_seperation_adjustment[16] = 17990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 18090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 30, 40, 50, 55, 60, 65, 70, 75, 18190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 80, 85, 90, 95, 100, 100, 100, 100, 18290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 18390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 18490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 18579f15823c34ae1e423108295e416213200bb280fAndreas Huberstatic const int gf_adjust_table[101] = 18690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 18790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 100, 18890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 115, 130, 145, 160, 175, 190, 200, 210, 220, 230, 18990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 240, 260, 270, 280, 290, 300, 310, 320, 330, 340, 19090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 350, 360, 370, 380, 390, 400, 400, 400, 400, 400, 19190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 19290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 19390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 19490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 19590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 19690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 19790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 19890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 19990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 20079f15823c34ae1e423108295e416213200bb280fAndreas Huberstatic const int gf_intra_usage_adjustment[20] = 20190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 20290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 125, 120, 115, 110, 105, 100, 95, 85, 80, 75, 20390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 70, 65, 60, 55, 50, 50, 50, 50, 50, 50, 20490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 20590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 20679f15823c34ae1e423108295e416213200bb280fAndreas Huberstatic const int gf_interval_table[101] = 20790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 20890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7, 20990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 21090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 21190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 21290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 21390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 21490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 21590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 21690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 21790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 21890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 21990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber}; 22090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 22190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberstatic const unsigned int prior_key_frame_weight[KEY_FRAME_CONTEXT] = { 1, 2, 3, 4, 5 }; 22290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 22390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 22490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubervoid vp8_save_coding_context(VP8_COMP *cpi) 22590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 22690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber CODING_CONTEXT *const cc = & cpi->coding_context; 22790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2281b362b15af34006e6a11974088a46d42b903418eJohann /* Stores a snapshot of key state variables which can subsequently be 2291b362b15af34006e6a11974088a46d42b903418eJohann * restored with a call to vp8_restore_coding_context. These functions are 2301b362b15af34006e6a11974088a46d42b903418eJohann * intended for use in a re-code loop in vp8_compress_frame where the 2311b362b15af34006e6a11974088a46d42b903418eJohann * quantizer value is adjusted between loop iterations. 2321b362b15af34006e6a11974088a46d42b903418eJohann */ 23390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 23490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cc->frames_since_key = cpi->frames_since_key; 23590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cc->filter_level = cpi->common.filter_level; 23690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cc->frames_till_gf_update_due = cpi->frames_till_gf_update_due; 23790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cc->frames_since_golden = cpi->common.frames_since_golden; 23890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 23990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->mvc, cpi->common.fc.mvc); 2401b362b15af34006e6a11974088a46d42b903418eJohann vp8_copy(cc->mvcosts, cpi->rd_costs.mvcosts); 24190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 24290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->ymode_prob, cpi->common.fc.ymode_prob); 24390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->uv_mode_prob, cpi->common.fc.uv_mode_prob); 24490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2451b362b15af34006e6a11974088a46d42b903418eJohann vp8_copy(cc->ymode_count, cpi->mb.ymode_count); 2461b362b15af34006e6a11974088a46d42b903418eJohann vp8_copy(cc->uv_mode_count, cpi->mb.uv_mode_count); 24790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 24890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2491b362b15af34006e6a11974088a46d42b903418eJohann /* Stats */ 25090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#ifdef MODE_STATS 25190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->y_modes, y_modes); 25290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->uv_modes, uv_modes); 25390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->b_modes, b_modes); 25490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->inter_y_modes, inter_y_modes); 25590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->inter_uv_modes, inter_uv_modes); 25690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cc->inter_b_modes, inter_b_modes); 25790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#endif 25890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 25990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cc->this_frame_percent_intra = cpi->this_frame_percent_intra; 26090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 26190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 26290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 26390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubervoid vp8_restore_coding_context(VP8_COMP *cpi) 26490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 26590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber CODING_CONTEXT *const cc = & cpi->coding_context; 26690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2671b362b15af34006e6a11974088a46d42b903418eJohann /* Restore key state variables to the snapshot state stored in the 2681b362b15af34006e6a11974088a46d42b903418eJohann * previous call to vp8_save_coding_context. 2691b362b15af34006e6a11974088a46d42b903418eJohann */ 27090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 27190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_since_key = cc->frames_since_key; 27290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->common.filter_level = cc->filter_level; 27390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due = cc->frames_till_gf_update_due; 27490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->common.frames_since_golden = cc->frames_since_golden; 27590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 27690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cpi->common.fc.mvc, cc->mvc); 27790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2781b362b15af34006e6a11974088a46d42b903418eJohann vp8_copy(cpi->rd_costs.mvcosts, cc->mvcosts); 27990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 28090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cpi->common.fc.ymode_prob, cc->ymode_prob); 28190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(cpi->common.fc.uv_mode_prob, cc->uv_mode_prob); 28290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2831b362b15af34006e6a11974088a46d42b903418eJohann vp8_copy(cpi->mb.ymode_count, cc->ymode_count); 2841b362b15af34006e6a11974088a46d42b903418eJohann vp8_copy(cpi->mb.uv_mode_count, cc->uv_mode_count); 28590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2861b362b15af34006e6a11974088a46d42b903418eJohann /* Stats */ 28790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#ifdef MODE_STATS 28890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(y_modes, cc->y_modes); 28990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(uv_modes, cc->uv_modes); 29090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(b_modes, cc->b_modes); 29190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(inter_y_modes, cc->inter_y_modes); 29290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(inter_uv_modes, cc->inter_uv_modes); 29390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_copy(inter_b_modes, cc->inter_b_modes); 29490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#endif 29590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 29690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 29790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_percent_intra = cc->this_frame_percent_intra; 29890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 29990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 30090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 30190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubervoid vp8_setup_key_frame(VP8_COMP *cpi) 30290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 3031b362b15af34006e6a11974088a46d42b903418eJohann /* Setup for Key frame: */ 30490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 30590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vp8_default_coef_probs(& cpi->common); 30690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 30790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber vpx_memcpy(cpi->common.fc.mvc, vp8_default_mv_context, sizeof(vp8_default_mv_context)); 30890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 30990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int flag[2] = {1, 1}; 3101b362b15af34006e6a11974088a46d42b903418eJohann vp8_build_component_cost_table(cpi->mb.mvcost, (const MV_CONTEXT *) cpi->common.fc.mvc, flag); 31190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 31290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3131b362b15af34006e6a11974088a46d42b903418eJohann /* Make sure we initialize separate contexts for altref,gold, and normal. 3141b362b15af34006e6a11974088a46d42b903418eJohann * TODO shouldn't need 3 different copies of structure to do this! 3151b362b15af34006e6a11974088a46d42b903418eJohann */ 3161b362b15af34006e6a11974088a46d42b903418eJohann vpx_memcpy(&cpi->lfc_a, &cpi->common.fc, sizeof(cpi->common.fc)); 3171b362b15af34006e6a11974088a46d42b903418eJohann vpx_memcpy(&cpi->lfc_g, &cpi->common.fc, sizeof(cpi->common.fc)); 3181b362b15af34006e6a11974088a46d42b903418eJohann vpx_memcpy(&cpi->lfc_n, &cpi->common.fc, sizeof(cpi->common.fc)); 31990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 32090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->common.filter_level = cpi->common.base_qindex * 3 / 8 ; 32190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3221b362b15af34006e6a11974088a46d42b903418eJohann /* Provisional interval before next GF */ 32390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->auto_gold) 32490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due = cpi->baseline_gf_interval; 32590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 3261b362b15af34006e6a11974088a46d42b903418eJohann cpi->frames_till_gf_update_due = DEFAULT_GF_INTERVAL; 3271b362b15af34006e6a11974088a46d42b903418eJohann 3281b362b15af34006e6a11974088a46d42b903418eJohann cpi->common.refresh_golden_frame = 1; 3291b362b15af34006e6a11974088a46d42b903418eJohann cpi->common.refresh_alt_ref_frame = 1; 3301b362b15af34006e6a11974088a46d42b903418eJohann} 3311b362b15af34006e6a11974088a46d42b903418eJohann 33290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3331b362b15af34006e6a11974088a46d42b903418eJohannstatic int estimate_bits_at_q(int frame_kind, int Q, int MBs, 3341b362b15af34006e6a11974088a46d42b903418eJohann double correction_factor) 3351b362b15af34006e6a11974088a46d42b903418eJohann{ 3361b362b15af34006e6a11974088a46d42b903418eJohann int Bpm = (int)(.5 + correction_factor * vp8_bits_per_mb[frame_kind][Q]); 3371b362b15af34006e6a11974088a46d42b903418eJohann 3381b362b15af34006e6a11974088a46d42b903418eJohann /* Attempt to retain reasonable accuracy without overflow. The cutoff is 3391b362b15af34006e6a11974088a46d42b903418eJohann * chosen such that the maximum product of Bpm and MBs fits 31 bits. The 3401b362b15af34006e6a11974088a46d42b903418eJohann * largest Bpm takes 20 bits. 3411b362b15af34006e6a11974088a46d42b903418eJohann */ 3421b362b15af34006e6a11974088a46d42b903418eJohann if (MBs > (1 << 11)) 3431b362b15af34006e6a11974088a46d42b903418eJohann return (Bpm >> BPER_MB_NORMBITS) * MBs; 3441b362b15af34006e6a11974088a46d42b903418eJohann else 3451b362b15af34006e6a11974088a46d42b903418eJohann return (Bpm * MBs) >> BPER_MB_NORMBITS; 34690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 34790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3481b362b15af34006e6a11974088a46d42b903418eJohann 3491b362b15af34006e6a11974088a46d42b903418eJohannstatic void calc_iframe_target_size(VP8_COMP *cpi) 35090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 3511b362b15af34006e6a11974088a46d42b903418eJohann /* boost defaults to half second */ 35290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int kf_boost; 3531b362b15af34006e6a11974088a46d42b903418eJohann uint64_t target; 35490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3551b362b15af34006e6a11974088a46d42b903418eJohann /* Clear down mmx registers to allow floating point in what follows */ 3561b362b15af34006e6a11974088a46d42b903418eJohann vp8_clear_system_state(); 35790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 35890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->oxcf.fixed_q >= 0) 35990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 3601b362b15af34006e6a11974088a46d42b903418eJohann int Q = cpi->oxcf.key_q; 36190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3621b362b15af34006e6a11974088a46d42b903418eJohann target = estimate_bits_at_q(INTRA_FRAME, Q, cpi->common.MBs, 3631b362b15af34006e6a11974088a46d42b903418eJohann cpi->key_frame_rate_correction_factor); 3641b362b15af34006e6a11974088a46d42b903418eJohann } 3651b362b15af34006e6a11974088a46d42b903418eJohann else if (cpi->pass == 2) 3661b362b15af34006e6a11974088a46d42b903418eJohann { 3671b362b15af34006e6a11974088a46d42b903418eJohann /* New Two pass RC */ 3681b362b15af34006e6a11974088a46d42b903418eJohann target = cpi->per_frame_bandwidth; 3691b362b15af34006e6a11974088a46d42b903418eJohann } 3701b362b15af34006e6a11974088a46d42b903418eJohann /* First Frame is a special case */ 3711b362b15af34006e6a11974088a46d42b903418eJohann else if (cpi->common.current_video_frame == 0) 37290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 3731b362b15af34006e6a11974088a46d42b903418eJohann /* 1 Pass there is no information on which to base size so use 3741b362b15af34006e6a11974088a46d42b903418eJohann * bandwidth per second * fraction of the initial buffer 3751b362b15af34006e6a11974088a46d42b903418eJohann * level 3761b362b15af34006e6a11974088a46d42b903418eJohann */ 3771b362b15af34006e6a11974088a46d42b903418eJohann target = cpi->oxcf.starting_buffer_level / 2; 3781b362b15af34006e6a11974088a46d42b903418eJohann 3791b362b15af34006e6a11974088a46d42b903418eJohann if(target > cpi->oxcf.target_bandwidth * 3 / 2) 3801b362b15af34006e6a11974088a46d42b903418eJohann target = cpi->oxcf.target_bandwidth * 3 / 2; 38190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 38290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 38390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 3841b362b15af34006e6a11974088a46d42b903418eJohann /* if this keyframe was forced, use a more recent Q estimate */ 3851b362b15af34006e6a11974088a46d42b903418eJohann int Q = (cpi->common.frame_flags & FRAMEFLAGS_KEY) 3861b362b15af34006e6a11974088a46d42b903418eJohann ? cpi->avg_frame_qindex : cpi->ni_av_qi; 3871b362b15af34006e6a11974088a46d42b903418eJohann 3881b362b15af34006e6a11974088a46d42b903418eJohann int initial_boost = 32; /* |3.0 * per_frame_bandwidth| */ 3891b362b15af34006e6a11974088a46d42b903418eJohann /* Boost depends somewhat on frame rate: only used for 1 layer case. */ 3901b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->oxcf.number_of_layers == 1) { 3911b362b15af34006e6a11974088a46d42b903418eJohann kf_boost = MAX(initial_boost, (int)(2 * cpi->output_frame_rate - 16)); 3921b362b15af34006e6a11974088a46d42b903418eJohann } 3931b362b15af34006e6a11974088a46d42b903418eJohann else { 3941b362b15af34006e6a11974088a46d42b903418eJohann /* Initial factor: set target size to: |3.0 * per_frame_bandwidth|. */ 3951b362b15af34006e6a11974088a46d42b903418eJohann kf_boost = initial_boost; 3961b362b15af34006e6a11974088a46d42b903418eJohann } 39790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3981b362b15af34006e6a11974088a46d42b903418eJohann /* adjustment up based on q: this factor ranges from ~1.2 to 2.2. */ 3991b362b15af34006e6a11974088a46d42b903418eJohann kf_boost = kf_boost * kf_boost_qadjustment[Q] / 100; 40090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4011b362b15af34006e6a11974088a46d42b903418eJohann /* frame separation adjustment ( down) */ 40290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->frames_since_key < cpi->output_frame_rate / 2) 4031b362b15af34006e6a11974088a46d42b903418eJohann kf_boost = (int)(kf_boost 4041b362b15af34006e6a11974088a46d42b903418eJohann * cpi->frames_since_key / (cpi->output_frame_rate / 2)); 40590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4061b362b15af34006e6a11974088a46d42b903418eJohann /* Minimal target size is |2* per_frame_bandwidth|. */ 40790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (kf_boost < 16) 40890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber kf_boost = 16; 40990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4101b362b15af34006e6a11974088a46d42b903418eJohann target = ((16 + kf_boost) * cpi->per_frame_bandwidth) >> 4; 41190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 41290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 41390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4141b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->oxcf.rc_max_intra_bitrate_pct) 41590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 4161b362b15af34006e6a11974088a46d42b903418eJohann unsigned int max_rate = cpi->per_frame_bandwidth 4171b362b15af34006e6a11974088a46d42b903418eJohann * cpi->oxcf.rc_max_intra_bitrate_pct / 100; 41890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4191b362b15af34006e6a11974088a46d42b903418eJohann if (target > max_rate) 4201b362b15af34006e6a11974088a46d42b903418eJohann target = max_rate; 42190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 42290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4231b362b15af34006e6a11974088a46d42b903418eJohann cpi->this_frame_target = (int)target; 4241b362b15af34006e6a11974088a46d42b903418eJohann 4251b362b15af34006e6a11974088a46d42b903418eJohann /* TODO: if we separate rate targeting from Q targetting, move this. 4261b362b15af34006e6a11974088a46d42b903418eJohann * Reset the active worst quality to the baseline value for key frames. 4271b362b15af34006e6a11974088a46d42b903418eJohann */ 4281b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->pass != 2) 4291b362b15af34006e6a11974088a46d42b903418eJohann cpi->active_worst_quality = cpi->worst_quality; 4301b362b15af34006e6a11974088a46d42b903418eJohann 4311b362b15af34006e6a11974088a46d42b903418eJohann#if 0 43290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 43390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber FILE *f; 43490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 43590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber f = fopen("kf_boost.stt", "a"); 43690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber fprintf(f, " %8u %10d %10d %10d\n", 43790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->common.current_video_frame, cpi->gfu_boost, cpi->baseline_gf_interval, cpi->source_alt_ref_pending); 43890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 43990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber fclose(f); 44090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 4411b362b15af34006e6a11974088a46d42b903418eJohann#endif 44290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 44390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4441b362b15af34006e6a11974088a46d42b903418eJohann 4451b362b15af34006e6a11974088a46d42b903418eJohann/* Do the best we can to define the parameters for the next GF based on what 4461b362b15af34006e6a11974088a46d42b903418eJohann * information we have available. 4471b362b15af34006e6a11974088a46d42b903418eJohann */ 44890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberstatic void calc_gf_params(VP8_COMP *cpi) 44990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 45090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Q = (cpi->oxcf.fixed_q < 0) ? cpi->last_q[INTER_FRAME] : cpi->oxcf.fixed_q; 45190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Boost = 0; 45290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4531b362b15af34006e6a11974088a46d42b903418eJohann int gf_frame_useage = 0; /* Golden frame useage since last GF */ 45490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int tot_mbs = cpi->recent_ref_frame_usage[INTRA_FRAME] + 45590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->recent_ref_frame_usage[LAST_FRAME] + 45690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->recent_ref_frame_usage[GOLDEN_FRAME] + 45790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->recent_ref_frame_usage[ALTREF_FRAME]; 45890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 459f71323e297a928af368937089d3ed71239786f86Andreas Huber int pct_gf_active = (100 * cpi->gf_active_count) / (cpi->common.mb_rows * cpi->common.mb_cols); 46090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 46190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (tot_mbs) 46290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber gf_frame_useage = (cpi->recent_ref_frame_usage[GOLDEN_FRAME] + cpi->recent_ref_frame_usage[ALTREF_FRAME]) * 100 / tot_mbs; 46390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 46490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (pct_gf_active > gf_frame_useage) 46590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber gf_frame_useage = pct_gf_active; 46690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4671b362b15af34006e6a11974088a46d42b903418eJohann /* Not two pass */ 46890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->pass != 2) 46990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 4701b362b15af34006e6a11974088a46d42b903418eJohann /* Single Pass lagged mode: TBD */ 4711b362b15af34006e6a11974088a46d42b903418eJohann if (0) 47290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 47390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 47490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4751b362b15af34006e6a11974088a46d42b903418eJohann /* Single Pass compression: Has to use current and historical data */ 47690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 47790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 47890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#if 0 4791b362b15af34006e6a11974088a46d42b903418eJohann /* Experimental code */ 48090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int index = cpi->one_pass_frame_index; 48190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int frames_to_scan = (cpi->max_gf_interval <= MAX_LAG_BUFFERS) ? cpi->max_gf_interval : MAX_LAG_BUFFERS; 48290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4831b362b15af34006e6a11974088a46d42b903418eJohann /* ************** Experimental code - incomplete */ 48490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber /* 48590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double decay_val = 1.0; 48690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double IIAccumulator = 0.0; 48790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double last_iiaccumulator = 0.0; 48890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double IIRatio; 48990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 49090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->one_pass_frame_index = cpi->common.current_video_frame%MAX_LAG_BUFFERS; 49190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 49290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber for ( i = 0; i < (frames_to_scan - 1); i++ ) 49390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 49490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ( index < 0 ) 49590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber index = MAX_LAG_BUFFERS; 49690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber index --; 49790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 49890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ( cpi->one_pass_frame_stats[index].frame_coded_error > 0.0 ) 49990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 50090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber IIRatio = cpi->one_pass_frame_stats[index].frame_intra_error / cpi->one_pass_frame_stats[index].frame_coded_error; 50190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 50290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ( IIRatio > 30.0 ) 50390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber IIRatio = 30.0; 50490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 50590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 50690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber IIRatio = 30.0; 50790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 50890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber IIAccumulator += IIRatio * decay_val; 50990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 51090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber decay_val = decay_val * cpi->one_pass_frame_stats[index].frame_pcnt_inter; 51190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 51290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ( (i > MIN_GF_INTERVAL) && 51390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber ((IIAccumulator - last_iiaccumulator) < 2.0) ) 51490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 51590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber break; 51690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 51790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber last_iiaccumulator = IIAccumulator; 51890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 51990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 52090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Boost = IIAccumulator*100.0/16.0; 52190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->baseline_gf_interval = i; 52290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 52390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber */ 52490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#else 52590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 52690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber /*************************************************************/ 5271b362b15af34006e6a11974088a46d42b903418eJohann /* OLD code */ 52890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5291b362b15af34006e6a11974088a46d42b903418eJohann /* Adjust boost based upon ambient Q */ 53090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Boost = GFQ_ADJUSTMENT; 53190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5321b362b15af34006e6a11974088a46d42b903418eJohann /* Adjust based upon most recently measure intra useage */ 53379f15823c34ae1e423108295e416213200bb280fAndreas Huber Boost = Boost * gf_intra_usage_adjustment[(cpi->this_frame_percent_intra < 15) ? cpi->this_frame_percent_intra : 14] / 100; 53490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5351b362b15af34006e6a11974088a46d42b903418eJohann /* Adjust gf boost based upon GF usage since last GF */ 53679f15823c34ae1e423108295e416213200bb280fAndreas Huber Boost = Boost * gf_adjust_table[gf_frame_useage] / 100; 53790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#endif 53890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 53990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5401b362b15af34006e6a11974088a46d42b903418eJohann /* golden frame boost without recode loop often goes awry. be 5411b362b15af34006e6a11974088a46d42b903418eJohann * safe by keeping numbers down. 5421b362b15af34006e6a11974088a46d42b903418eJohann */ 54390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (!cpi->sf.recode_loop) 54490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 54590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->compressor_speed == 2) 54690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Boost = Boost / 2; 54790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 54890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5491b362b15af34006e6a11974088a46d42b903418eJohann /* Apply an upper limit based on Q for 1 pass encodes */ 55079f15823c34ae1e423108295e416213200bb280fAndreas Huber if (Boost > kf_gf_boost_qlimits[Q] && (cpi->pass == 0)) 55179f15823c34ae1e423108295e416213200bb280fAndreas Huber Boost = kf_gf_boost_qlimits[Q]; 55290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5531b362b15af34006e6a11974088a46d42b903418eJohann /* Apply lower limits to boost. */ 55490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (Boost < 110) 55590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Boost = 110; 55690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5571b362b15af34006e6a11974088a46d42b903418eJohann /* Note the boost used */ 55890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->last_boost = Boost; 55990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 56090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 56190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5621b362b15af34006e6a11974088a46d42b903418eJohann /* Estimate next interval 5631b362b15af34006e6a11974088a46d42b903418eJohann * This is updated once the real frame size/boost is known. 5641b362b15af34006e6a11974088a46d42b903418eJohann */ 56590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->oxcf.fixed_q == -1) 56690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 5671b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->pass == 2) /* 2 Pass */ 56890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 56990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due = cpi->baseline_gf_interval; 57090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 5711b362b15af34006e6a11974088a46d42b903418eJohann else /* 1 Pass */ 57290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 57390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due = cpi->baseline_gf_interval; 57490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 57590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->last_boost > 750) 57690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due++; 57790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 57890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->last_boost > 1000) 57990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due++; 58090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 58190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->last_boost > 1250) 58290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due++; 58390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 58490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->last_boost >= 1500) 58590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due ++; 58690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 58779f15823c34ae1e423108295e416213200bb280fAndreas Huber if (gf_interval_table[gf_frame_useage] > cpi->frames_till_gf_update_due) 58879f15823c34ae1e423108295e416213200bb280fAndreas Huber cpi->frames_till_gf_update_due = gf_interval_table[gf_frame_useage]; 58990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 59090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->frames_till_gf_update_due > cpi->max_gf_interval) 59190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due = cpi->max_gf_interval; 59290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 59390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 59490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 59590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_till_gf_update_due = cpi->baseline_gf_interval; 59690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5971b362b15af34006e6a11974088a46d42b903418eJohann /* ARF on or off */ 59890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->pass != 2) 59990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 6001b362b15af34006e6a11974088a46d42b903418eJohann /* For now Alt ref is not allowed except in 2 pass modes. */ 6011b362b15af34006e6a11974088a46d42b903418eJohann cpi->source_alt_ref_pending = 0; 60290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 60390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber /*if ( cpi->oxcf.fixed_q == -1) 60490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 60590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ( cpi->oxcf.play_alternate && (cpi->last_boost > (100 + (AF_THRESH*cpi->frames_till_gf_update_due)) ) ) 6061b362b15af34006e6a11974088a46d42b903418eJohann cpi->source_alt_ref_pending = 1; 60790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 6081b362b15af34006e6a11974088a46d42b903418eJohann cpi->source_alt_ref_pending = 0; 60990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber }*/ 61090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 61190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 61290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 61390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 6141b362b15af34006e6a11974088a46d42b903418eJohannstatic void calc_pframe_target_size(VP8_COMP *cpi) 61590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 61690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int min_frame_target; 61790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Adjustment; 6181b362b15af34006e6a11974088a46d42b903418eJohann int old_per_frame_bandwidth = cpi->per_frame_bandwidth; 6191b362b15af34006e6a11974088a46d42b903418eJohann 6201b362b15af34006e6a11974088a46d42b903418eJohann if ( cpi->current_layer > 0) 6211b362b15af34006e6a11974088a46d42b903418eJohann cpi->per_frame_bandwidth = 6221b362b15af34006e6a11974088a46d42b903418eJohann cpi->layer_context[cpi->current_layer].avg_frame_size_for_layer; 62390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 62490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber min_frame_target = 0; 62590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 62690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->pass == 2) 62790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 62890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber min_frame_target = cpi->min_frame_bandwidth; 62990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 63090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (min_frame_target < (cpi->av_per_frame_bandwidth >> 5)) 63190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber min_frame_target = cpi->av_per_frame_bandwidth >> 5; 63290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 63390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (min_frame_target < cpi->per_frame_bandwidth / 4) 63490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber min_frame_target = cpi->per_frame_bandwidth / 4; 63590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 63690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 6371b362b15af34006e6a11974088a46d42b903418eJohann /* Special alt reference frame case */ 6381b362b15af34006e6a11974088a46d42b903418eJohann if((cpi->common.refresh_alt_ref_frame) && (cpi->oxcf.number_of_layers == 1)) 63990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 64090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->pass == 2) 64190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 6421b362b15af34006e6a11974088a46d42b903418eJohann /* Per frame bit target for the alt ref frame */ 6431b362b15af34006e6a11974088a46d42b903418eJohann cpi->per_frame_bandwidth = cpi->twopass.gf_bits; 64490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target = cpi->per_frame_bandwidth; 64590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 64690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 64790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber /* One Pass ??? TBD */ 64890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 64990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 6501b362b15af34006e6a11974088a46d42b903418eJohann /* Normal frames (gf,and inter) */ 65190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 65290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 6531b362b15af34006e6a11974088a46d42b903418eJohann /* 2 pass */ 65490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->pass == 2) 65590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 65690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target = cpi->per_frame_bandwidth; 65790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 6581b362b15af34006e6a11974088a46d42b903418eJohann /* 1 pass */ 65990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 66090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 6611b362b15af34006e6a11974088a46d42b903418eJohann /* Make rate adjustment to recover bits spent in key frame 6621b362b15af34006e6a11974088a46d42b903418eJohann * Test to see if the key frame inter data rate correction 6631b362b15af34006e6a11974088a46d42b903418eJohann * should still be in force 6641b362b15af34006e6a11974088a46d42b903418eJohann */ 66590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->kf_overspend_bits > 0) 66690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 66790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Adjustment = (cpi->kf_bitrate_adjustment <= cpi->kf_overspend_bits) ? cpi->kf_bitrate_adjustment : cpi->kf_overspend_bits; 66890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 66990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (Adjustment > (cpi->per_frame_bandwidth - min_frame_target)) 67090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Adjustment = (cpi->per_frame_bandwidth - min_frame_target); 67190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 67290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->kf_overspend_bits -= Adjustment; 67390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 6741b362b15af34006e6a11974088a46d42b903418eJohann /* Calculate an inter frame bandwidth target for the next 6751b362b15af34006e6a11974088a46d42b903418eJohann * few frames designed to recover any extra bits spent on 6761b362b15af34006e6a11974088a46d42b903418eJohann * the key frame. 6771b362b15af34006e6a11974088a46d42b903418eJohann */ 67890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target = cpi->per_frame_bandwidth - Adjustment; 67990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 68090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->this_frame_target < min_frame_target) 68190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target = min_frame_target; 68290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 68390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 68490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target = cpi->per_frame_bandwidth; 68590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 6861b362b15af34006e6a11974088a46d42b903418eJohann /* If appropriate make an adjustment to recover bits spent on a 6871b362b15af34006e6a11974088a46d42b903418eJohann * recent GF 6881b362b15af34006e6a11974088a46d42b903418eJohann */ 68990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ((cpi->gf_overspend_bits > 0) && (cpi->this_frame_target > min_frame_target)) 69090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 69190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Adjustment = (cpi->non_gf_bitrate_adjustment <= cpi->gf_overspend_bits) ? cpi->non_gf_bitrate_adjustment : cpi->gf_overspend_bits; 69290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 69390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (Adjustment > (cpi->this_frame_target - min_frame_target)) 69490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Adjustment = (cpi->this_frame_target - min_frame_target); 69590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 69690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->gf_overspend_bits -= Adjustment; 69790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target -= Adjustment; 69890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 69990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7001b362b15af34006e6a11974088a46d42b903418eJohann /* Apply small + and - boosts for non gf frames */ 70190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ((cpi->last_boost > 150) && (cpi->frames_till_gf_update_due > 0) && 70290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber (cpi->current_gf_interval >= (MIN_GF_INTERVAL << 1))) 70390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 7041b362b15af34006e6a11974088a46d42b903418eJohann /* % Adjustment limited to the range 1% to 10% */ 70590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Adjustment = (cpi->last_boost - 100) >> 5; 70690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 70790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (Adjustment < 1) 70890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Adjustment = 1; 70990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (Adjustment > 10) 71090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Adjustment = 10; 71190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7121b362b15af34006e6a11974088a46d42b903418eJohann /* Convert to bits */ 71390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Adjustment = (cpi->this_frame_target * Adjustment) / 100; 71490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 71590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (Adjustment > (cpi->this_frame_target - min_frame_target)) 71690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Adjustment = (cpi->this_frame_target - min_frame_target); 71790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 71890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.frames_since_golden == (cpi->current_gf_interval >> 1)) 71990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target += ((cpi->current_gf_interval - 1) * Adjustment); 72090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 72190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target -= Adjustment; 72290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 72390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 72490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 72590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7261b362b15af34006e6a11974088a46d42b903418eJohann /* Sanity check that the total sum of adjustments is not above the 7271b362b15af34006e6a11974088a46d42b903418eJohann * maximum allowed That is that having allowed for KF and GF penalties 7281b362b15af34006e6a11974088a46d42b903418eJohann * we have not pushed the current interframe target to low. If the 7291b362b15af34006e6a11974088a46d42b903418eJohann * adjustment we apply here is not capable of recovering all the extra 7301b362b15af34006e6a11974088a46d42b903418eJohann * bits we have spent in the KF or GF then the remainder will have to 7311b362b15af34006e6a11974088a46d42b903418eJohann * be recovered over a longer time span via other buffer / rate control 7321b362b15af34006e6a11974088a46d42b903418eJohann * mechanisms. 7331b362b15af34006e6a11974088a46d42b903418eJohann */ 73490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->this_frame_target < min_frame_target) 73590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target = min_frame_target; 73690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 73790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (!cpi->common.refresh_alt_ref_frame) 7381b362b15af34006e6a11974088a46d42b903418eJohann /* Note the baseline target data rate for this inter frame. */ 73990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->inter_frame_target = cpi->this_frame_target; 74090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7411b362b15af34006e6a11974088a46d42b903418eJohann /* One Pass specific code */ 74290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->pass == 0) 74390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 7441b362b15af34006e6a11974088a46d42b903418eJohann /* Adapt target frame size with respect to any buffering constraints: */ 74590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->buffered_mode) 74690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 7471b362b15af34006e6a11974088a46d42b903418eJohann int one_percent_bits = (int) 7481b362b15af34006e6a11974088a46d42b903418eJohann (1 + cpi->oxcf.optimal_buffer_level / 100); 74990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 75079f15823c34ae1e423108295e416213200bb280fAndreas Huber if ((cpi->buffer_level < cpi->oxcf.optimal_buffer_level) || 75179f15823c34ae1e423108295e416213200bb280fAndreas Huber (cpi->bits_off_target < cpi->oxcf.optimal_buffer_level)) 75290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 75390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int percent_low = 0; 75490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7551b362b15af34006e6a11974088a46d42b903418eJohann /* Decide whether or not we need to adjust the frame data 7561b362b15af34006e6a11974088a46d42b903418eJohann * rate target. 7571b362b15af34006e6a11974088a46d42b903418eJohann * 7581b362b15af34006e6a11974088a46d42b903418eJohann * If we are are below the optimal buffer fullness level 7591b362b15af34006e6a11974088a46d42b903418eJohann * and adherence to buffering constraints is important to 7601b362b15af34006e6a11974088a46d42b903418eJohann * the end usage then adjust the per frame target. 7611b362b15af34006e6a11974088a46d42b903418eJohann */ 76279f15823c34ae1e423108295e416213200bb280fAndreas Huber if ((cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) && 76379f15823c34ae1e423108295e416213200bb280fAndreas Huber (cpi->buffer_level < cpi->oxcf.optimal_buffer_level)) 76490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 7651b362b15af34006e6a11974088a46d42b903418eJohann percent_low = (int) 7661b362b15af34006e6a11974088a46d42b903418eJohann ((cpi->oxcf.optimal_buffer_level - cpi->buffer_level) / 7671b362b15af34006e6a11974088a46d42b903418eJohann one_percent_bits); 76890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 7691b362b15af34006e6a11974088a46d42b903418eJohann /* Are we overshooting the long term clip data rate... */ 77090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (cpi->bits_off_target < 0) 77190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 7721b362b15af34006e6a11974088a46d42b903418eJohann /* Adjust per frame data target downwards to compensate. */ 77379f15823c34ae1e423108295e416213200bb280fAndreas Huber percent_low = (int)(100 * -cpi->bits_off_target / 77479f15823c34ae1e423108295e416213200bb280fAndreas Huber (cpi->total_byte_count * 8)); 77590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 77690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7771b362b15af34006e6a11974088a46d42b903418eJohann if (percent_low > cpi->oxcf.under_shoot_pct) 7781b362b15af34006e6a11974088a46d42b903418eJohann percent_low = cpi->oxcf.under_shoot_pct; 7791b362b15af34006e6a11974088a46d42b903418eJohann else if (percent_low < 0) 7801b362b15af34006e6a11974088a46d42b903418eJohann percent_low = 0; 78190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7821b362b15af34006e6a11974088a46d42b903418eJohann /* lower the target bandwidth for this frame. */ 7831b362b15af34006e6a11974088a46d42b903418eJohann cpi->this_frame_target -= 7841b362b15af34006e6a11974088a46d42b903418eJohann (cpi->this_frame_target * percent_low) / 200; 78590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7861b362b15af34006e6a11974088a46d42b903418eJohann /* Are we using allowing control of active_worst_allowed_q 7871b362b15af34006e6a11974088a46d42b903418eJohann * according to buffer level. 7881b362b15af34006e6a11974088a46d42b903418eJohann */ 7891b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->auto_worst_q && cpi->ni_frames > 150) 7901b362b15af34006e6a11974088a46d42b903418eJohann { 7911b362b15af34006e6a11974088a46d42b903418eJohann int64_t critical_buffer_level; 7921b362b15af34006e6a11974088a46d42b903418eJohann 7931b362b15af34006e6a11974088a46d42b903418eJohann /* For streaming applications the most important factor is 7941b362b15af34006e6a11974088a46d42b903418eJohann * cpi->buffer_level as this takes into account the 7951b362b15af34006e6a11974088a46d42b903418eJohann * specified short term buffering constraints. However, 7961b362b15af34006e6a11974088a46d42b903418eJohann * hitting the long term clip data rate target is also 7971b362b15af34006e6a11974088a46d42b903418eJohann * important. 7981b362b15af34006e6a11974088a46d42b903418eJohann */ 79990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) 80090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 8011b362b15af34006e6a11974088a46d42b903418eJohann /* Take the smaller of cpi->buffer_level and 8021b362b15af34006e6a11974088a46d42b903418eJohann * cpi->bits_off_target 8031b362b15af34006e6a11974088a46d42b903418eJohann */ 80479f15823c34ae1e423108295e416213200bb280fAndreas Huber critical_buffer_level = 80579f15823c34ae1e423108295e416213200bb280fAndreas Huber (cpi->buffer_level < cpi->bits_off_target) 80679f15823c34ae1e423108295e416213200bb280fAndreas Huber ? cpi->buffer_level : cpi->bits_off_target; 80790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 8081b362b15af34006e6a11974088a46d42b903418eJohann /* For local file playback short term buffering constraints 8091b362b15af34006e6a11974088a46d42b903418eJohann * are less of an issue 8101b362b15af34006e6a11974088a46d42b903418eJohann */ 81190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 81290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 8131b362b15af34006e6a11974088a46d42b903418eJohann /* Consider only how we are doing for the clip as a 8141b362b15af34006e6a11974088a46d42b903418eJohann * whole 8151b362b15af34006e6a11974088a46d42b903418eJohann */ 81690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber critical_buffer_level = cpi->bits_off_target; 81790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 81890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 8191b362b15af34006e6a11974088a46d42b903418eJohann /* Set the active worst quality based upon the selected 8201b362b15af34006e6a11974088a46d42b903418eJohann * buffer fullness number. 8211b362b15af34006e6a11974088a46d42b903418eJohann */ 82290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (critical_buffer_level < cpi->oxcf.optimal_buffer_level) 82390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 82479f15823c34ae1e423108295e416213200bb280fAndreas Huber if ( critical_buffer_level > 82579f15823c34ae1e423108295e416213200bb280fAndreas Huber (cpi->oxcf.optimal_buffer_level >> 2) ) 82690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 8271b362b15af34006e6a11974088a46d42b903418eJohann int64_t qadjustment_range = 82879f15823c34ae1e423108295e416213200bb280fAndreas Huber cpi->worst_quality - cpi->ni_av_qi; 8291b362b15af34006e6a11974088a46d42b903418eJohann int64_t above_base = 83079f15823c34ae1e423108295e416213200bb280fAndreas Huber (critical_buffer_level - 83179f15823c34ae1e423108295e416213200bb280fAndreas Huber (cpi->oxcf.optimal_buffer_level >> 2)); 83279f15823c34ae1e423108295e416213200bb280fAndreas Huber 8331b362b15af34006e6a11974088a46d42b903418eJohann /* Step active worst quality down from 8341b362b15af34006e6a11974088a46d42b903418eJohann * cpi->ni_av_qi when (critical_buffer_level == 8351b362b15af34006e6a11974088a46d42b903418eJohann * cpi->optimal_buffer_level) to 8361b362b15af34006e6a11974088a46d42b903418eJohann * cpi->worst_quality when 8371b362b15af34006e6a11974088a46d42b903418eJohann * (critical_buffer_level == 8381b362b15af34006e6a11974088a46d42b903418eJohann * cpi->optimal_buffer_level >> 2) 8391b362b15af34006e6a11974088a46d42b903418eJohann */ 84079f15823c34ae1e423108295e416213200bb280fAndreas Huber cpi->active_worst_quality = 84179f15823c34ae1e423108295e416213200bb280fAndreas Huber cpi->worst_quality - 8421b362b15af34006e6a11974088a46d42b903418eJohann (int)((qadjustment_range * above_base) / 84379f15823c34ae1e423108295e416213200bb280fAndreas Huber (cpi->oxcf.optimal_buffer_level*3>>2)); 84490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 84590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 84690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 84790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->active_worst_quality = cpi->worst_quality; 84890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 84990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 85090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 85190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 85290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->active_worst_quality = cpi->ni_av_qi; 85390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 85490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 85590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 85690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 85790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->active_worst_quality = cpi->worst_quality; 85890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 85990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 86090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 86190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 8621b362b15af34006e6a11974088a46d42b903418eJohann int percent_high = 0; 86390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 8641b362b15af34006e6a11974088a46d42b903418eJohann if ((cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) 8651b362b15af34006e6a11974088a46d42b903418eJohann && (cpi->buffer_level > cpi->oxcf.optimal_buffer_level)) 86690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 8671b362b15af34006e6a11974088a46d42b903418eJohann percent_high = (int)((cpi->buffer_level 8681b362b15af34006e6a11974088a46d42b903418eJohann - cpi->oxcf.optimal_buffer_level) 8691b362b15af34006e6a11974088a46d42b903418eJohann / one_percent_bits); 8701b362b15af34006e6a11974088a46d42b903418eJohann } 8711b362b15af34006e6a11974088a46d42b903418eJohann else if (cpi->bits_off_target > cpi->oxcf.optimal_buffer_level) 8721b362b15af34006e6a11974088a46d42b903418eJohann { 8731b362b15af34006e6a11974088a46d42b903418eJohann percent_high = (int)((100 * cpi->bits_off_target) 8741b362b15af34006e6a11974088a46d42b903418eJohann / (cpi->total_byte_count * 8)); 8751b362b15af34006e6a11974088a46d42b903418eJohann } 87690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 8771b362b15af34006e6a11974088a46d42b903418eJohann if (percent_high > cpi->oxcf.over_shoot_pct) 8781b362b15af34006e6a11974088a46d42b903418eJohann percent_high = cpi->oxcf.over_shoot_pct; 8791b362b15af34006e6a11974088a46d42b903418eJohann else if (percent_high < 0) 8801b362b15af34006e6a11974088a46d42b903418eJohann percent_high = 0; 88190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 8821b362b15af34006e6a11974088a46d42b903418eJohann cpi->this_frame_target += (cpi->this_frame_target * 8831b362b15af34006e6a11974088a46d42b903418eJohann percent_high) / 200; 88490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 8851b362b15af34006e6a11974088a46d42b903418eJohann /* Are we allowing control of active_worst_allowed_q according 8861b362b15af34006e6a11974088a46d42b903418eJohann * to buffer level. 8871b362b15af34006e6a11974088a46d42b903418eJohann */ 8881b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->auto_worst_q && cpi->ni_frames > 150) 88990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 8901b362b15af34006e6a11974088a46d42b903418eJohann /* When using the relaxed buffer model stick to the 8911b362b15af34006e6a11974088a46d42b903418eJohann * user specified value 8921b362b15af34006e6a11974088a46d42b903418eJohann */ 89390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->active_worst_quality = cpi->ni_av_qi; 89490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 89590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 89690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 89790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->active_worst_quality = cpi->worst_quality; 89890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 89990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 90090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9011b362b15af34006e6a11974088a46d42b903418eJohann /* Set active_best_quality to prevent quality rising too high */ 90290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->active_best_quality = cpi->best_quality; 90390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9041b362b15af34006e6a11974088a46d42b903418eJohann /* Worst quality obviously must not be better than best quality */ 90590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->active_worst_quality <= cpi->active_best_quality) 90690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->active_worst_quality = cpi->active_best_quality + 1; 90790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9081b362b15af34006e6a11974088a46d42b903418eJohann if(cpi->active_worst_quality > 127) 9091b362b15af34006e6a11974088a46d42b903418eJohann cpi->active_worst_quality = 127; 91090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 9111b362b15af34006e6a11974088a46d42b903418eJohann /* Unbuffered mode (eg. video conferencing) */ 91290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 91390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 9141b362b15af34006e6a11974088a46d42b903418eJohann /* Set the active worst quality */ 91590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->active_worst_quality = cpi->worst_quality; 91690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 91779f15823c34ae1e423108295e416213200bb280fAndreas Huber 9181b362b15af34006e6a11974088a46d42b903418eJohann /* Special trap for constrained quality mode 9191b362b15af34006e6a11974088a46d42b903418eJohann * "active_worst_quality" may never drop below cq level 9201b362b15af34006e6a11974088a46d42b903418eJohann * for any frame type. 9211b362b15af34006e6a11974088a46d42b903418eJohann */ 92279f15823c34ae1e423108295e416213200bb280fAndreas Huber if ( cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY && 92379f15823c34ae1e423108295e416213200bb280fAndreas Huber cpi->active_worst_quality < cpi->cq_target_quality) 92479f15823c34ae1e423108295e416213200bb280fAndreas Huber { 92579f15823c34ae1e423108295e416213200bb280fAndreas Huber cpi->active_worst_quality = cpi->cq_target_quality; 92679f15823c34ae1e423108295e416213200bb280fAndreas Huber } 92790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 92890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9291b362b15af34006e6a11974088a46d42b903418eJohann /* Test to see if we have to drop a frame 9301b362b15af34006e6a11974088a46d42b903418eJohann * The auto-drop frame code is only used in buffered mode. 9311b362b15af34006e6a11974088a46d42b903418eJohann * In unbufferd mode (eg vide conferencing) the descision to 9321b362b15af34006e6a11974088a46d42b903418eJohann * code or drop a frame is made outside the codec in response to real 9331b362b15af34006e6a11974088a46d42b903418eJohann * world comms or buffer considerations. 9341b362b15af34006e6a11974088a46d42b903418eJohann */ 9351b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->drop_frames_allowed && 93690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) && 9371b362b15af34006e6a11974088a46d42b903418eJohann ((cpi->common.frame_type != KEY_FRAME))) 93890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 9391b362b15af34006e6a11974088a46d42b903418eJohann /* Check for a buffer underun-crisis in which case we have to drop 9401b362b15af34006e6a11974088a46d42b903418eJohann * a frame 9411b362b15af34006e6a11974088a46d42b903418eJohann */ 94290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ((cpi->buffer_level < 0)) 94390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 94490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#if 0 94590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber FILE *f = fopen("dec.stt", "a"); 94690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber fprintf(f, "%10d %10d %10d %10d ***** BUFFER EMPTY\n", 94790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber (int) cpi->common.current_video_frame, 94890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->decimation_factor, cpi->common.horiz_scale, 94990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber (cpi->buffer_level * 100) / cpi->oxcf.optimal_buffer_level); 95090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber fclose(f); 95190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#endif 9521b362b15af34006e6a11974088a46d42b903418eJohann cpi->drop_frame = 1; 95390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9541b362b15af34006e6a11974088a46d42b903418eJohann /* Update the buffer level variable. */ 95590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->bits_off_target += cpi->av_per_frame_bandwidth; 9561b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->bits_off_target > cpi->oxcf.maximum_buffer_size) 9571b362b15af34006e6a11974088a46d42b903418eJohann cpi->bits_off_target = (int)cpi->oxcf.maximum_buffer_size; 95890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->buffer_level = cpi->bits_off_target; 95990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 96090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 96190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9621b362b15af34006e6a11974088a46d42b903418eJohann /* Adjust target frame size for Golden Frames: */ 96390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->oxcf.error_resilient_mode == 0 && 96490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber (cpi->frames_till_gf_update_due == 0) && !cpi->drop_frame) 96590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 96690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Q = (cpi->oxcf.fixed_q < 0) ? cpi->last_q[INTER_FRAME] : cpi->oxcf.fixed_q; 96790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9681b362b15af34006e6a11974088a46d42b903418eJohann int gf_frame_useage = 0; /* Golden frame useage since last GF */ 96990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int tot_mbs = cpi->recent_ref_frame_usage[INTRA_FRAME] + 97090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->recent_ref_frame_usage[LAST_FRAME] + 97190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->recent_ref_frame_usage[GOLDEN_FRAME] + 97290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->recent_ref_frame_usage[ALTREF_FRAME]; 97390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 974f71323e297a928af368937089d3ed71239786f86Andreas Huber int pct_gf_active = (100 * cpi->gf_active_count) / (cpi->common.mb_rows * cpi->common.mb_cols); 97590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 97690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (tot_mbs) 97790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber gf_frame_useage = (cpi->recent_ref_frame_usage[GOLDEN_FRAME] + cpi->recent_ref_frame_usage[ALTREF_FRAME]) * 100 / tot_mbs; 97890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 97990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (pct_gf_active > gf_frame_useage) 98090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber gf_frame_useage = pct_gf_active; 98190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9821b362b15af34006e6a11974088a46d42b903418eJohann /* Is a fixed manual GF frequency being used */ 98379f15823c34ae1e423108295e416213200bb280fAndreas Huber if (cpi->auto_gold) 98490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 9851b362b15af34006e6a11974088a46d42b903418eJohann /* For one pass throw a GF if recent frame intra useage is 9861b362b15af34006e6a11974088a46d42b903418eJohann * low or the GF useage is high 9871b362b15af34006e6a11974088a46d42b903418eJohann */ 98890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ((cpi->pass == 0) && (cpi->this_frame_percent_intra < 15 || gf_frame_useage >= 5)) 9891b362b15af34006e6a11974088a46d42b903418eJohann cpi->common.refresh_golden_frame = 1; 99090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9911b362b15af34006e6a11974088a46d42b903418eJohann /* Two pass GF descision */ 99290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (cpi->pass == 2) 9931b362b15af34006e6a11974088a46d42b903418eJohann cpi->common.refresh_golden_frame = 1; 99490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 99590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 99690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#if 0 99790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9981b362b15af34006e6a11974088a46d42b903418eJohann /* Debug stats */ 99990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (0) 100090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 100190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber FILE *f; 100290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 100390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber f = fopen("gf_useaget.stt", "a"); 100490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber fprintf(f, " %8ld %10ld %10ld %10ld %10ld\n", 100590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->common.current_video_frame, cpi->gfu_boost, GFQ_ADJUSTMENT, cpi->gfu_boost, gf_frame_useage); 100690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber fclose(f); 100790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 100890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 100990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#endif 101090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10111b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->common.refresh_golden_frame == 1) 101290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 101390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#if 0 101490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10151b362b15af34006e6a11974088a46d42b903418eJohann if (0) 101690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 101790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber FILE *f; 101890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 101990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber f = fopen("GFexit.stt", "a"); 102090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber fprintf(f, "%8ld GF coded\n", cpi->common.current_video_frame); 102190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber fclose(f); 102290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 102390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 102490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#endif 102590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 102690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->auto_adjust_gold_quantizer) 102790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 102890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber calc_gf_params(cpi); 102990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 103090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10311b362b15af34006e6a11974088a46d42b903418eJohann /* If we are using alternate ref instead of gf then do not apply the 10321b362b15af34006e6a11974088a46d42b903418eJohann * boost It will instead be applied to the altref update Jims 10331b362b15af34006e6a11974088a46d42b903418eJohann * modified boost 10341b362b15af34006e6a11974088a46d42b903418eJohann */ 103590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (!cpi->source_alt_ref_active) 103690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 103790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->oxcf.fixed_q < 0) 103890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 103990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->pass == 2) 104090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 10411b362b15af34006e6a11974088a46d42b903418eJohann /* The spend on the GF is defined in the two pass 10421b362b15af34006e6a11974088a46d42b903418eJohann * code for two pass encodes 10431b362b15af34006e6a11974088a46d42b903418eJohann */ 10441b362b15af34006e6a11974088a46d42b903418eJohann cpi->this_frame_target = cpi->per_frame_bandwidth; 104590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 104690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 104790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 104890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Boost = cpi->last_boost; 104990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int frames_in_section = cpi->frames_till_gf_update_due + 1; 105090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int allocation_chunks = (frames_in_section * 100) + (Boost - 100); 105190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int bits_in_section = cpi->inter_frame_target * frames_in_section; 105290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10531b362b15af34006e6a11974088a46d42b903418eJohann /* Normalize Altboost and allocations chunck down to 10541b362b15af34006e6a11974088a46d42b903418eJohann * prevent overflow 10551b362b15af34006e6a11974088a46d42b903418eJohann */ 105690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber while (Boost > 1000) 105790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 105890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Boost /= 2; 105990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber allocation_chunks /= 2; 106090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 106190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10621b362b15af34006e6a11974088a46d42b903418eJohann /* Avoid loss of precision but avoid overflow */ 106390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ((bits_in_section >> 7) > allocation_chunks) 106490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target = Boost * (bits_in_section / allocation_chunks); 106590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 106690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->this_frame_target = (Boost * bits_in_section) / allocation_chunks; 106790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 106890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 106990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 10701b362b15af34006e6a11974088a46d42b903418eJohann cpi->this_frame_target = 10711b362b15af34006e6a11974088a46d42b903418eJohann (estimate_bits_at_q(1, Q, cpi->common.MBs, 1.0) 10721b362b15af34006e6a11974088a46d42b903418eJohann * cpi->last_boost) / 100; 107390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 107490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 10751b362b15af34006e6a11974088a46d42b903418eJohann /* If there is an active ARF at this location use the minimum 10761b362b15af34006e6a11974088a46d42b903418eJohann * bits on this frame even if it is a contructed arf. 10771b362b15af34006e6a11974088a46d42b903418eJohann * The active maximum quantizer insures that an appropriate 10781b362b15af34006e6a11974088a46d42b903418eJohann * number of bits will be spent if needed for contstructed ARFs. 10791b362b15af34006e6a11974088a46d42b903418eJohann */ 108090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 108190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 1082f71323e297a928af368937089d3ed71239786f86Andreas Huber cpi->this_frame_target = 0; 108390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 108490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 108590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->current_gf_interval = cpi->frames_till_gf_update_due; 108690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 108790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 108890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 10891b362b15af34006e6a11974088a46d42b903418eJohann 10901b362b15af34006e6a11974088a46d42b903418eJohann cpi->per_frame_bandwidth = old_per_frame_bandwidth; 109190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 109290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 109390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 109490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubervoid vp8_update_rate_correction_factors(VP8_COMP *cpi, int damp_var) 109590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 109690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Q = cpi->common.base_qindex; 109790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int correction_factor = 100; 109890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double rate_correction_factor; 109990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double adjustment_limit; 110090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 110190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int projected_size_based_on_q = 0; 110290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11031b362b15af34006e6a11974088a46d42b903418eJohann /* Clear down mmx registers to allow floating point in what follows */ 11041b362b15af34006e6a11974088a46d42b903418eJohann vp8_clear_system_state(); 110590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 110690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.frame_type == KEY_FRAME) 110790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 110890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber rate_correction_factor = cpi->key_frame_rate_correction_factor; 110990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 111090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 111190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 111290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.refresh_alt_ref_frame || cpi->common.refresh_golden_frame) 111390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber rate_correction_factor = cpi->gf_rate_correction_factor; 111490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 111590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber rate_correction_factor = cpi->rate_correction_factor; 111690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 111790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11181b362b15af34006e6a11974088a46d42b903418eJohann /* Work out how big we would have expected the frame to be at this Q 11191b362b15af34006e6a11974088a46d42b903418eJohann * given the current correction factor. Stay in double to avoid int 11201b362b15af34006e6a11974088a46d42b903418eJohann * overflow when values are large 11211b362b15af34006e6a11974088a46d42b903418eJohann */ 112290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 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)); 112390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11241b362b15af34006e6a11974088a46d42b903418eJohann /* Make some allowance for cpi->zbin_over_quant */ 112590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->zbin_over_quant > 0) 112690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 112790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Z = cpi->zbin_over_quant; 112890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double Factor = 0.99; 11291b362b15af34006e6a11974088a46d42b903418eJohann double factor_adjustment = 0.01 / 256.0; 113090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 113190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber while (Z > 0) 113290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 113390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Z --; 1134f71323e297a928af368937089d3ed71239786f86Andreas Huber projected_size_based_on_q = 1135f71323e297a928af368937089d3ed71239786f86Andreas Huber (int)(Factor * projected_size_based_on_q); 113690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Factor += factor_adjustment; 113790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 113890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (Factor >= 0.999) 113990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Factor = 0.999; 114090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 114190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 114290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11431b362b15af34006e6a11974088a46d42b903418eJohann /* Work out a size correction factor. */ 114490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (projected_size_based_on_q > 0) 114590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber correction_factor = (100 * cpi->projected_frame_size) / projected_size_based_on_q; 114690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11471b362b15af34006e6a11974088a46d42b903418eJohann /* More heavily damped adjustment used if we have been oscillating 11481b362b15af34006e6a11974088a46d42b903418eJohann * either side of target 11491b362b15af34006e6a11974088a46d42b903418eJohann */ 115090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber switch (damp_var) 115190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 115290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber case 0: 115390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber adjustment_limit = 0.75; 115490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber break; 115590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber case 1: 115690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber adjustment_limit = 0.375; 115790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber break; 115890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber case 2: 115990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber default: 116090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber adjustment_limit = 0.25; 116190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber break; 116290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 116390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 116490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (correction_factor > 102) 116590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 11661b362b15af34006e6a11974088a46d42b903418eJohann /* We are not already at the worst allowable quality */ 116790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber correction_factor = (int)(100.5 + ((correction_factor - 100) * adjustment_limit)); 116890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber rate_correction_factor = ((rate_correction_factor * correction_factor) / 100); 116990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11701b362b15af34006e6a11974088a46d42b903418eJohann /* Keep rate_correction_factor within limits */ 117190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (rate_correction_factor > MAX_BPB_FACTOR) 117290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber rate_correction_factor = MAX_BPB_FACTOR; 117390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 117490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (correction_factor < 99) 117590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 11761b362b15af34006e6a11974088a46d42b903418eJohann /* We are not already at the best allowable quality */ 117790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber correction_factor = (int)(100.5 - ((100 - correction_factor) * adjustment_limit)); 117890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber rate_correction_factor = ((rate_correction_factor * correction_factor) / 100); 117990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11801b362b15af34006e6a11974088a46d42b903418eJohann /* Keep rate_correction_factor within limits */ 118190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (rate_correction_factor < MIN_BPB_FACTOR) 118290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber rate_correction_factor = MIN_BPB_FACTOR; 118390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 118490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 118590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.frame_type == KEY_FRAME) 118690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->key_frame_rate_correction_factor = rate_correction_factor; 118790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 118890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 118990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.refresh_alt_ref_frame || cpi->common.refresh_golden_frame) 119090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->gf_rate_correction_factor = rate_correction_factor; 119190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 119290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->rate_correction_factor = rate_correction_factor; 119390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 119490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 119590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 119690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 119790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberint vp8_regulate_q(VP8_COMP *cpi, int target_bits_per_frame) 119890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 119990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int Q = cpi->active_worst_quality; 120090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 12011b362b15af34006e6a11974088a46d42b903418eJohann /* Reset Zbin OQ value */ 120290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->zbin_over_quant = 0; 120390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 120490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->oxcf.fixed_q >= 0) 120590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 120690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Q = cpi->oxcf.fixed_q; 120790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 120890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.frame_type == KEY_FRAME) 120990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 121090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Q = cpi->oxcf.key_q; 121190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 121290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (cpi->common.refresh_alt_ref_frame) 121390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 121490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Q = cpi->oxcf.alt_q; 121590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 121690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (cpi->common.refresh_golden_frame) 121790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 121890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Q = cpi->oxcf.gold_q; 121990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 122090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 122190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 122290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 122390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 122490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int i; 122590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int last_error = INT_MAX; 122690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int target_bits_per_mb; 122790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int bits_per_mb_at_this_q; 122890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double correction_factor; 122990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 12301b362b15af34006e6a11974088a46d42b903418eJohann /* Select the appropriate correction factor based upon type of frame. */ 123190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.frame_type == KEY_FRAME) 123290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber correction_factor = cpi->key_frame_rate_correction_factor; 123390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 123490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 123590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.refresh_alt_ref_frame || cpi->common.refresh_golden_frame) 123690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber correction_factor = cpi->gf_rate_correction_factor; 123790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 123890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber correction_factor = cpi->rate_correction_factor; 123990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 124090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 12411b362b15af34006e6a11974088a46d42b903418eJohann /* Calculate required scaling factor based on target frame size and 12421b362b15af34006e6a11974088a46d42b903418eJohann * size of frame produced using previous Q 12431b362b15af34006e6a11974088a46d42b903418eJohann */ 124490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (target_bits_per_frame >= (INT_MAX >> BPER_MB_NORMBITS)) 12451b362b15af34006e6a11974088a46d42b903418eJohann /* Case where we would overflow int */ 12461b362b15af34006e6a11974088a46d42b903418eJohann target_bits_per_mb = (target_bits_per_frame / cpi->common.MBs) << BPER_MB_NORMBITS; 124790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 124890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber target_bits_per_mb = (target_bits_per_frame << BPER_MB_NORMBITS) / cpi->common.MBs; 124990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 125090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber i = cpi->active_best_quality; 125190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 125290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber do 125390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 125490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber bits_per_mb_at_this_q = (int)(.5 + correction_factor * vp8_bits_per_mb[cpi->common.frame_type][i]); 125590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 125690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (bits_per_mb_at_this_q <= target_bits_per_mb) 125790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 125890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ((target_bits_per_mb - bits_per_mb_at_this_q) <= last_error) 125990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Q = i; 126090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 126190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Q = i - 1; 126290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 126390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber break; 126490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 126590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 126690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber last_error = bits_per_mb_at_this_q - target_bits_per_mb; 126790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 126890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber while (++i <= cpi->active_worst_quality); 126990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 127090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 12711b362b15af34006e6a11974088a46d42b903418eJohann /* If we are at MAXQ then enable Q over-run which seeks to claw 12721b362b15af34006e6a11974088a46d42b903418eJohann * back additional bits through things like the RD multiplier 12731b362b15af34006e6a11974088a46d42b903418eJohann * and zero bin size. 12741b362b15af34006e6a11974088a46d42b903418eJohann */ 127590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (Q >= MAXQ) 127690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 127790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int zbin_oqmax; 127890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 127990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double Factor = 0.99; 12801b362b15af34006e6a11974088a46d42b903418eJohann double factor_adjustment = 0.01 / 256.0; 128190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 128290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.frame_type == KEY_FRAME) 12831b362b15af34006e6a11974088a46d42b903418eJohann zbin_oqmax = 0; 128490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (cpi->common.refresh_alt_ref_frame || (cpi->common.refresh_golden_frame && !cpi->source_alt_ref_active)) 128590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber zbin_oqmax = 16; 128690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 128790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber zbin_oqmax = ZBIN_OQ_MAX; 128890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 128990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber /*{ 129090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double Factor = (double)target_bits_per_mb/(double)bits_per_mb_at_this_q; 129190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber double Oq; 129290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 129390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Factor = Factor/1.2683; 129490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 129590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Oq = pow( Factor, (1.0/-0.165) ); 129690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 129790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if ( Oq > zbin_oqmax ) 129890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Oq = zbin_oqmax; 129990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 130090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->zbin_over_quant = (int)Oq; 130190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber }*/ 130290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13031b362b15af34006e6a11974088a46d42b903418eJohann /* Each incrment in the zbin is assumed to have a fixed effect 13041b362b15af34006e6a11974088a46d42b903418eJohann * on bitrate. This is not of course true. The effect will be 13051b362b15af34006e6a11974088a46d42b903418eJohann * highly clip dependent and may well have sudden steps. The 13061b362b15af34006e6a11974088a46d42b903418eJohann * idea here is to acheive higher effective quantizers than the 13071b362b15af34006e6a11974088a46d42b903418eJohann * normal maximum by expanding the zero bin and hence 13081b362b15af34006e6a11974088a46d42b903418eJohann * decreasing the number of low magnitude non zero coefficients. 13091b362b15af34006e6a11974088a46d42b903418eJohann */ 131090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber while (cpi->zbin_over_quant < zbin_oqmax) 131190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 131290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->zbin_over_quant ++; 131390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 131490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->zbin_over_quant > zbin_oqmax) 131590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->zbin_over_quant = zbin_oqmax; 131690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13171b362b15af34006e6a11974088a46d42b903418eJohann /* Adjust bits_per_mb_at_this_q estimate */ 1318f71323e297a928af368937089d3ed71239786f86Andreas Huber bits_per_mb_at_this_q = (int)(Factor * bits_per_mb_at_this_q); 131990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Factor += factor_adjustment; 132090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 132190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (Factor >= 0.999) 132290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber Factor = 0.999; 132390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13241b362b15af34006e6a11974088a46d42b903418eJohann /* Break out if we get down to the target rate */ 13251b362b15af34006e6a11974088a46d42b903418eJohann if (bits_per_mb_at_this_q <= target_bits_per_mb) 132690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber break; 132790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 132890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 132990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 133090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 133190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 133290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber return Q; 133390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 133490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 133590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13361b362b15af34006e6a11974088a46d42b903418eJohannstatic int estimate_keyframe_frequency(VP8_COMP *cpi) 133790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 133890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber int i; 133990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13401b362b15af34006e6a11974088a46d42b903418eJohann /* Average key frame frequency */ 13411b362b15af34006e6a11974088a46d42b903418eJohann int av_key_frame_frequency = 0; 134290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13431b362b15af34006e6a11974088a46d42b903418eJohann /* First key frame at start of sequence is a special case. We have no 13441b362b15af34006e6a11974088a46d42b903418eJohann * frequency data. 13451b362b15af34006e6a11974088a46d42b903418eJohann */ 134690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->key_frame_count == 1) 134790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 13481b362b15af34006e6a11974088a46d42b903418eJohann /* Assume a default of 1 kf every 2 seconds, or the max kf interval, 13491b362b15af34006e6a11974088a46d42b903418eJohann * whichever is smaller. 13501b362b15af34006e6a11974088a46d42b903418eJohann */ 13511b362b15af34006e6a11974088a46d42b903418eJohann int key_freq = cpi->oxcf.key_freq>0 ? cpi->oxcf.key_freq : 1; 13521b362b15af34006e6a11974088a46d42b903418eJohann av_key_frame_frequency = (int)cpi->output_frame_rate * 2; 13531b362b15af34006e6a11974088a46d42b903418eJohann 13541b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->oxcf.auto_key && av_key_frame_frequency > key_freq) 13551b362b15af34006e6a11974088a46d42b903418eJohann av_key_frame_frequency = cpi->oxcf.key_freq; 13561b362b15af34006e6a11974088a46d42b903418eJohann 13571b362b15af34006e6a11974088a46d42b903418eJohann cpi->prior_key_frame_distance[KEY_FRAME_CONTEXT - 1] 13581b362b15af34006e6a11974088a46d42b903418eJohann = av_key_frame_frequency; 135990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 136090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 136190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 13621b362b15af34006e6a11974088a46d42b903418eJohann unsigned int total_weight = 0; 1363f71323e297a928af368937089d3ed71239786f86Andreas Huber int last_kf_interval = 1364f71323e297a928af368937089d3ed71239786f86Andreas Huber (cpi->frames_since_key > 0) ? cpi->frames_since_key : 1; 1365f71323e297a928af368937089d3ed71239786f86Andreas Huber 13661b362b15af34006e6a11974088a46d42b903418eJohann /* reset keyframe context and calculate weighted average of last 13671b362b15af34006e6a11974088a46d42b903418eJohann * KEY_FRAME_CONTEXT keyframes 13681b362b15af34006e6a11974088a46d42b903418eJohann */ 136990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber for (i = 0; i < KEY_FRAME_CONTEXT; i++) 137090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 137190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (i < KEY_FRAME_CONTEXT - 1) 13721b362b15af34006e6a11974088a46d42b903418eJohann cpi->prior_key_frame_distance[i] 13731b362b15af34006e6a11974088a46d42b903418eJohann = cpi->prior_key_frame_distance[i+1]; 137490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 1375f71323e297a928af368937089d3ed71239786f86Andreas Huber cpi->prior_key_frame_distance[i] = last_kf_interval; 137690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13771b362b15af34006e6a11974088a46d42b903418eJohann av_key_frame_frequency += prior_key_frame_weight[i] 13781b362b15af34006e6a11974088a46d42b903418eJohann * cpi->prior_key_frame_distance[i]; 13791b362b15af34006e6a11974088a46d42b903418eJohann total_weight += prior_key_frame_weight[i]; 138090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 138190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 138290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber av_key_frame_frequency /= total_weight; 138390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 138490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 13851b362b15af34006e6a11974088a46d42b903418eJohann return av_key_frame_frequency; 13861b362b15af34006e6a11974088a46d42b903418eJohann} 13871b362b15af34006e6a11974088a46d42b903418eJohann 138890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13891b362b15af34006e6a11974088a46d42b903418eJohannvoid vp8_adjust_key_frame_context(VP8_COMP *cpi) 13901b362b15af34006e6a11974088a46d42b903418eJohann{ 13911b362b15af34006e6a11974088a46d42b903418eJohann /* Clear down mmx registers to allow floating point in what follows */ 13921b362b15af34006e6a11974088a46d42b903418eJohann vp8_clear_system_state(); 13931b362b15af34006e6a11974088a46d42b903418eJohann 13941b362b15af34006e6a11974088a46d42b903418eJohann /* Do we have any key frame overspend to recover? */ 13951b362b15af34006e6a11974088a46d42b903418eJohann /* Two-pass overspend handled elsewhere. */ 13961b362b15af34006e6a11974088a46d42b903418eJohann if ((cpi->pass != 2) 13971b362b15af34006e6a11974088a46d42b903418eJohann && (cpi->projected_frame_size > cpi->per_frame_bandwidth)) 139890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 13991b362b15af34006e6a11974088a46d42b903418eJohann int overspend; 14001b362b15af34006e6a11974088a46d42b903418eJohann 14011b362b15af34006e6a11974088a46d42b903418eJohann /* Update the count of key frame overspend to be recovered in 14021b362b15af34006e6a11974088a46d42b903418eJohann * subsequent frames. A portion of the KF overspend is treated as gf 14031b362b15af34006e6a11974088a46d42b903418eJohann * overspend (and hence recovered more quickly) as the kf is also a 14041b362b15af34006e6a11974088a46d42b903418eJohann * gf. Otherwise the few frames following each kf tend to get more 14051b362b15af34006e6a11974088a46d42b903418eJohann * bits allocated than those following other gfs. 14061b362b15af34006e6a11974088a46d42b903418eJohann */ 14071b362b15af34006e6a11974088a46d42b903418eJohann overspend = (cpi->projected_frame_size - cpi->per_frame_bandwidth); 14081b362b15af34006e6a11974088a46d42b903418eJohann 14091b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->oxcf.number_of_layers > 1) 14101b362b15af34006e6a11974088a46d42b903418eJohann cpi->kf_overspend_bits += overspend; 14111b362b15af34006e6a11974088a46d42b903418eJohann else 141290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 14131b362b15af34006e6a11974088a46d42b903418eJohann cpi->kf_overspend_bits += overspend * 7 / 8; 14141b362b15af34006e6a11974088a46d42b903418eJohann cpi->gf_overspend_bits += overspend * 1 / 8; 141590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 14161b362b15af34006e6a11974088a46d42b903418eJohann 14171b362b15af34006e6a11974088a46d42b903418eJohann /* Work out how much to try and recover per frame. */ 14181b362b15af34006e6a11974088a46d42b903418eJohann cpi->kf_bitrate_adjustment = cpi->kf_overspend_bits 14191b362b15af34006e6a11974088a46d42b903418eJohann / estimate_keyframe_frequency(cpi); 142090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 142190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 142290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->frames_since_key = 0; 142390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber cpi->key_frame_count++; 142490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 142590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 14261b362b15af34006e6a11974088a46d42b903418eJohann 142790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubervoid vp8_compute_frame_size_bounds(VP8_COMP *cpi, int *frame_under_shoot_limit, int *frame_over_shoot_limit) 142890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 14291b362b15af34006e6a11974088a46d42b903418eJohann /* Set-up bounds on acceptable frame size: */ 143090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->oxcf.fixed_q >= 0) 143190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 14321b362b15af34006e6a11974088a46d42b903418eJohann /* Fixed Q scenario: frame size never outranges target 14331b362b15af34006e6a11974088a46d42b903418eJohann * (there is no target!) 14341b362b15af34006e6a11974088a46d42b903418eJohann */ 143590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_under_shoot_limit = 0; 143690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_over_shoot_limit = INT_MAX; 143790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 143890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 143990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 144090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->common.frame_type == KEY_FRAME) 144190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 144290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_over_shoot_limit = cpi->this_frame_target * 9 / 8; 144390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_under_shoot_limit = cpi->this_frame_target * 7 / 8; 144490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 144590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 144690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 14471b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->oxcf.number_of_layers > 1 || 14481b362b15af34006e6a11974088a46d42b903418eJohann cpi->common.refresh_alt_ref_frame || 14491b362b15af34006e6a11974088a46d42b903418eJohann cpi->common.refresh_golden_frame) 145090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 145190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_over_shoot_limit = cpi->this_frame_target * 9 / 8; 145290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_under_shoot_limit = cpi->this_frame_target * 7 / 8; 145390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 145490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 145590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 14561b362b15af34006e6a11974088a46d42b903418eJohann /* For CBR take buffer fullness into account */ 145790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) 145890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 145990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (cpi->buffer_level >= ((cpi->oxcf.optimal_buffer_level + cpi->oxcf.maximum_buffer_size) >> 1)) 146090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 14611b362b15af34006e6a11974088a46d42b903418eJohann /* Buffer is too full so relax overshoot and tighten 14621b362b15af34006e6a11974088a46d42b903418eJohann * undershoot 14631b362b15af34006e6a11974088a46d42b903418eJohann */ 146490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_over_shoot_limit = cpi->this_frame_target * 12 / 8; 146590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_under_shoot_limit = cpi->this_frame_target * 6 / 8; 146690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 146790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else if (cpi->buffer_level <= (cpi->oxcf.optimal_buffer_level >> 1)) 146890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 14691b362b15af34006e6a11974088a46d42b903418eJohann /* Buffer is too low so relax undershoot and tighten 14701b362b15af34006e6a11974088a46d42b903418eJohann * overshoot 14711b362b15af34006e6a11974088a46d42b903418eJohann */ 147290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_over_shoot_limit = cpi->this_frame_target * 10 / 8; 147390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_under_shoot_limit = cpi->this_frame_target * 4 / 8; 147490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 147590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 147690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 147790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_over_shoot_limit = cpi->this_frame_target * 11 / 8; 147890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber *frame_under_shoot_limit = cpi->this_frame_target * 5 / 8; 147990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 148090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 14811b362b15af34006e6a11974088a46d42b903418eJohann /* VBR and CQ mode */ 14821b362b15af34006e6a11974088a46d42b903418eJohann /* Note that tighter restrictions here can help quality 14831b362b15af34006e6a11974088a46d42b903418eJohann * but hurt encode speed 14841b362b15af34006e6a11974088a46d42b903418eJohann */ 148590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber else 148690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 14871b362b15af34006e6a11974088a46d42b903418eJohann /* Stron overshoot limit for constrained quality */ 148879f15823c34ae1e423108295e416213200bb280fAndreas Huber if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) 148979f15823c34ae1e423108295e416213200bb280fAndreas Huber { 149079f15823c34ae1e423108295e416213200bb280fAndreas Huber *frame_over_shoot_limit = cpi->this_frame_target * 11 / 8; 149179f15823c34ae1e423108295e416213200bb280fAndreas Huber *frame_under_shoot_limit = cpi->this_frame_target * 2 / 8; 149279f15823c34ae1e423108295e416213200bb280fAndreas Huber } 149379f15823c34ae1e423108295e416213200bb280fAndreas Huber else 149479f15823c34ae1e423108295e416213200bb280fAndreas Huber { 149579f15823c34ae1e423108295e416213200bb280fAndreas Huber *frame_over_shoot_limit = cpi->this_frame_target * 11 / 8; 149679f15823c34ae1e423108295e416213200bb280fAndreas Huber *frame_under_shoot_limit = cpi->this_frame_target * 5 / 8; 149779f15823c34ae1e423108295e416213200bb280fAndreas Huber } 149890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 149990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 150090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 15011b362b15af34006e6a11974088a46d42b903418eJohann 15021b362b15af34006e6a11974088a46d42b903418eJohann /* For very small rate targets where the fractional adjustment 15031b362b15af34006e6a11974088a46d42b903418eJohann * (eg * 7/8) may be tiny make sure there is at least a minimum 15041b362b15af34006e6a11974088a46d42b903418eJohann * range. 15051b362b15af34006e6a11974088a46d42b903418eJohann */ 15061b362b15af34006e6a11974088a46d42b903418eJohann *frame_over_shoot_limit += 200; 15071b362b15af34006e6a11974088a46d42b903418eJohann *frame_under_shoot_limit -= 200; 15081b362b15af34006e6a11974088a46d42b903418eJohann if ( *frame_under_shoot_limit < 0 ) 15091b362b15af34006e6a11974088a46d42b903418eJohann *frame_under_shoot_limit = 0; 15101b362b15af34006e6a11974088a46d42b903418eJohann 15111b362b15af34006e6a11974088a46d42b903418eJohann } 15121b362b15af34006e6a11974088a46d42b903418eJohann} 15131b362b15af34006e6a11974088a46d42b903418eJohann 15141b362b15af34006e6a11974088a46d42b903418eJohann 15151b362b15af34006e6a11974088a46d42b903418eJohann/* return of 0 means drop frame */ 15161b362b15af34006e6a11974088a46d42b903418eJohannint vp8_pick_frame_size(VP8_COMP *cpi) 15171b362b15af34006e6a11974088a46d42b903418eJohann{ 15181b362b15af34006e6a11974088a46d42b903418eJohann VP8_COMMON *cm = &cpi->common; 15191b362b15af34006e6a11974088a46d42b903418eJohann 15201b362b15af34006e6a11974088a46d42b903418eJohann if (cm->frame_type == KEY_FRAME) 15211b362b15af34006e6a11974088a46d42b903418eJohann calc_iframe_target_size(cpi); 15221b362b15af34006e6a11974088a46d42b903418eJohann else 15231b362b15af34006e6a11974088a46d42b903418eJohann { 15241b362b15af34006e6a11974088a46d42b903418eJohann calc_pframe_target_size(cpi); 15251b362b15af34006e6a11974088a46d42b903418eJohann 15261b362b15af34006e6a11974088a46d42b903418eJohann /* Check if we're dropping the frame: */ 15271b362b15af34006e6a11974088a46d42b903418eJohann if (cpi->drop_frame) 15281b362b15af34006e6a11974088a46d42b903418eJohann { 15291b362b15af34006e6a11974088a46d42b903418eJohann cpi->drop_frame = 0; 15301b362b15af34006e6a11974088a46d42b903418eJohann return 0; 15311b362b15af34006e6a11974088a46d42b903418eJohann } 153290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 15331b362b15af34006e6a11974088a46d42b903418eJohann return 1; 153490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 1535