/* *  Copyright (c) 2010 The WebM project authors. All Rights Reserved. * *  Use of this source code is governed by a BSD-style license *  that can be found in the LICENSE file in the root of the source *  tree. An additional intellectual property rights grant can be found *  in the file PATENTS.  All contributing project authors may *  be found in the AUTHORS file in the root of the source tree. */  #include <stdlib.h>#include <stdio.h>#include <string.h>#include <limits.h>#include <assert.h> #include "math.h"#include "vp8/common/common.h"#include "ratectrl.h"#include "vp8/common/entropymode.h"#include "vpx_mem/vpx_mem.h"#include "vp8/common/systemdependent.h"#include "encodemv.h"  #define MIN_BPB_FACTOR          0.01#define MAX_BPB_FACTOR          50 extern const MB_PREDICTION_MODE vp8_mode_order[MAX_MODES];extern const MV_REFERENCE_FRAME vp8_ref_frame_order[MAX_MODES];   #ifdef MODE_STATSextern int y_modes[5];extern int uv_modes[4];extern int b_modes[10]; extern int inter_y_modes[10];extern int inter_uv_modes[4];extern int inter_b_modes[10];#endif // Bits Per MB at different Q (Multiplied by 512)#define BPER_MB_NORMBITS    9 // Work in progress recalibration of baseline rate tables based on// the assumption that bits per mb is inversely proportional to the// quantizer value.const int vp8_bits_per_mb[2][QINDEX_RANGE] ={    // Intra case 450000/Qintra    {        1125000,900000, 750000, 642857, 562500, 500000, 450000, 450000,        409090, 375000, 346153, 321428, 300000, 281250, 264705, 264705,        250000, 236842, 225000, 225000, 214285, 214285, 204545, 204545,        195652, 195652, 187500, 180000, 180000, 173076, 166666, 160714,        155172, 150000, 145161, 140625, 136363, 132352, 128571, 125000,        121621, 121621, 118421, 115384, 112500, 109756, 107142, 104651,        102272, 100000, 97826,  97826,  95744,  93750,  91836,  90000,        88235,  86538,  84905,  83333,  81818,  80357,  78947,  77586,        76271,  75000,  73770,  72580,  71428,  70312,  69230,  68181,        67164,  66176,  65217,  64285,  63380,  62500,  61643,  60810,        60000,  59210,  59210,  58441,  57692,  56962,  56250,  55555,        54878,  54216,  53571,  52941,  52325,  51724,  51136,  50561,        49450,  48387,  47368,  46875,  45918,  45000,  44554,  44117,        43269,  42452,  41666,  40909,  40178,  39473,  38793,  38135,        36885,  36290,  35714,  35156,  34615,  34090,  33582,  33088,        32608,  32142,  31468,  31034,  30405,  29801,  29220,  28662,    },    // Inter case 285000/Qinter    {        712500, 570000, 475000, 407142, 356250, 316666, 285000, 259090,        237500, 219230, 203571, 190000, 178125, 167647, 158333, 150000,        142500, 135714, 129545, 123913, 118750, 114000, 109615, 105555,        101785, 98275,  95000,  91935,  89062,  86363,  83823,  81428,        79166,  77027,  75000,  73076,  71250,  69512,  67857,  66279,        64772,  63333,  61956,  60638,  59375,  58163,  57000,  55882,        54807,  53773,  52777,  51818,  50892,  50000,  49137,  47500,        45967,  44531,  43181,  41911,  40714,  39583,  38513,  37500,        36538,  35625,  34756,  33928,  33139,  32386,  31666,  30978,        30319,  29687,  29081,  28500,  27941,  27403,  26886,  26388,        25909,  25446,  25000,  24568,  23949,  23360,  22800,  22265,        21755,  21268,  20802,  20357,  19930,  19520,  19127,  18750,        18387,  18037,  17701,  17378,  17065,  16764,  16473,  16101,        15745,  15405,  15079,  14766,  14467,  14179,  13902,  13636,        13380,  13133,  12895,  12666,  12445,  12179,  11924,  11632,        11445,  11220,  11003,  10795,  10594,  10401,  10215,  10035,    }}; static const int kf_boost_qadjustment[QINDEX_RANGE] ={    128, 129, 130, 131, 132, 133, 134, 135,    136, 137, 138, 139, 140, 141, 142, 143,    144, 145, 146, 147, 148, 149, 150, 151,    152, 153, 154, 155, 156, 157, 158, 159,    160, 161, 162, 163, 164, 165, 166, 167,    168, 169, 170, 171, 172, 173, 174, 175,    176, 177, 178, 179, 180, 181, 182, 183,    184, 185, 186, 187, 188, 189, 190, 191,    192, 193, 194, 195, 196, 197, 198, 199,    200, 200, 201, 201, 202, 203, 203, 203,    204, 204, 205, 205, 206, 206, 207, 207,    208, 208, 209, 209, 210, 210, 211, 211,    212, 212, 213, 213, 214, 214, 215, 215,    216, 216, 217, 217, 218, 218, 219, 219,    220, 220, 220, 220, 220, 220, 220, 220,    220, 220, 220, 220, 220, 220, 220, 220,}; //#define GFQ_ADJUSTMENT (Q+100)#define GFQ_ADJUSTMENT vp8_gf_boost_qadjustment[Q]const int vp8_gf_boost_qadjustment[QINDEX_RANGE] ={    80, 82, 84, 86, 88, 90, 92, 94,    96, 97, 98, 99, 100, 101, 102, 103,    104, 105, 106, 107, 108, 109, 110, 111,    112, 113, 114, 115, 116, 117, 118, 119,    120, 121, 122, 123, 124, 125, 126, 127,    128, 129, 130, 131, 132, 133, 134, 135,    136, 137, 138, 139, 140, 141, 142, 143,    144, 145, 146, 147, 148, 149, 150, 151,    152, 153, 154, 155, 156, 157, 158, 159,    160, 161, 162, 163, 164, 165, 166, 167,    168, 169, 170, 171, 172, 173, 174, 175,    176, 177, 178, 179, 180, 181, 182, 183,    184, 184, 185, 185, 186, 186, 187, 187,    188, 188, 189, 189, 190, 190, 191, 191,    192, 192, 193, 193, 194, 194, 194, 194,    195, 195, 196, 196, 197, 197, 198, 198}; /*const int vp8_gf_boost_qadjustment[QINDEX_RANGE] ={    100,101,102,103,104,105,105,106,    106,107,107,108,109,109,110,111,    112,113,114,115,116,117,118,119,    120,121,122,123,124,125,126,127,    128,129,130,131,132,133,134,135,    136,137,138,139,140,141,142,143,    144,145,146,147,148,149,150,151,    152,153,154,155,156,157,158,159,    160,161,162,163,164,165,166,167,    168,169,170,170,171,171,172,172,    173,173,173,174,174,174,175,175,    175,176,176,176,177,177,177,177,    178,178,179,179,180,180,181,181,    182,182,183,183,184,184,185,185,    186,186,187,187,188,188,189,189,    190,190,191,191,192,192,193,193,};*/ static const int kf_gf_boost_qlimits[QINDEX_RANGE] ={    150, 155, 160, 165, 170, 175, 180, 185,    190, 195, 200, 205, 210, 215, 220, 225,    230, 235, 240, 245, 250, 255, 260, 265,    270, 275, 280, 285, 290, 295, 300, 305,    310, 320, 330, 340, 350, 360, 370, 380,    390, 400, 410, 420, 430, 440, 450, 460,    470, 480, 490, 500, 510, 520, 530, 540,    550, 560, 570, 580, 590, 600, 600, 600,    600, 600, 600, 600, 600, 600, 600, 600,    600, 600, 600, 600, 600, 600, 600, 600,    600, 600, 600, 600, 600, 600, 600, 600,    600, 600, 600, 600, 600, 600, 600, 600,    600, 600, 600, 600, 600, 600, 600, 600,    600, 600, 600, 600, 600, 600, 600, 600,    600, 600, 600, 600, 600, 600, 600, 600,    600, 600, 600, 600, 600, 600, 600, 600,}; // % adjustment to target kf size based on seperation from previous framestatic const int kf_boost_seperation_adjustment[16] ={    30,   40,   50,   55,   60,   65,   70,   75,    80,   85,   90,   95,  100,  100,  100,  100,};  static const int gf_adjust_table[101] ={    100,    115, 130, 145, 160, 175, 190, 200, 210, 220, 230,    240, 260, 270, 280, 290, 300, 310, 320, 330, 340,    350, 360, 370, 380, 390, 400, 400, 400, 400, 400,    400, 400, 400, 400, 400, 400, 400, 400, 400, 400,    400, 400, 400, 400, 400, 400, 400, 400, 400, 400,    400, 400, 400, 400, 400, 400, 400, 400, 400, 400,    400, 400, 400, 400, 400, 400, 400, 400, 400, 400,    400, 400, 400, 400, 400, 400, 400, 400, 400, 400,    400, 400, 400, 400, 400, 400, 400, 400, 400, 400,    400, 400, 400, 400, 400, 400, 400, 400, 400, 400,}; static const int gf_intra_usage_adjustment[20] ={    125, 120, 115, 110, 105, 100,  95,  85,  80,  75,    70,  65,  60,  55,  50,  50,  50,  50,  50,  50,}; static const int gf_interval_table[101] ={    7,    7, 7, 7, 7, 7, 7, 7, 7, 7, 7,    7, 7, 7, 7, 7, 7, 7, 7, 7, 7,    7, 7, 7, 7, 7, 7, 7, 7, 7, 7,    8, 8, 8, 8, 8, 8, 8, 8, 8, 8,    8, 8, 8, 8, 8, 8, 8, 8, 8, 8,    9, 9, 9, 9, 9, 9, 9, 9, 9, 9,    9, 9, 9, 9, 9, 9, 9, 9, 9, 9,    10, 10, 10, 10, 10, 10, 10, 10, 10, 10,    10, 10, 10, 10, 10, 10, 10, 10, 10, 10,    11, 11, 11, 11, 11, 11, 11, 11, 11, 11,}; static const unsigned int prior_key_frame_weight[KEY_FRAME_CONTEXT] = { 1, 2, 3, 4, 5 };  void vp8_save_coding_context(VP8_COMP *cpi){    CODING_CONTEXT *const cc = & cpi->coding_context;     // Stores a snapshot of key state variables which can subsequently be    // restored with a call to vp8_restore_coding_context. These functions are    // intended for use in a re-code loop in vp8_compress_frame where the    // quantizer value is adjusted between loop iterations.     cc->frames_since_key          = cpi->frames_since_key;    cc->filter_level             = cpi->common.filter_level;    cc->frames_till_gf_update_due   = cpi->frames_till_gf_update_due;    cc->frames_since_golden       = cpi->common.frames_since_golden;     vp8_copy(cc->mvc,      cpi->common.fc.mvc);    vp8_copy(cc->mvcosts,  cpi->mb.mvcosts);     vp8_copy(cc->kf_ymode_prob,   cpi->common.kf_ymode_prob);    vp8_copy(cc->ymode_prob,   cpi->common.fc.ymode_prob);    vp8_copy(cc->kf_uv_mode_prob,  cpi->common.kf_uv_mode_prob);    vp8_copy(cc->uv_mode_prob,  cpi->common.fc.uv_mode_prob);     vp8_copy(cc->ymode_count, cpi->ymode_count);    vp8_copy(cc->uv_mode_count, cpi->uv_mode_count);      // Stats#ifdef MODE_STATS    vp8_copy(cc->y_modes,       y_modes);    vp8_copy(cc->uv_modes,      uv_modes);    vp8_copy(cc->b_modes,       b_modes);    vp8_copy(cc->inter_y_modes,  inter_y_modes);    vp8_copy(cc->inter_uv_modes, inter_uv_modes);    vp8_copy(cc->inter_b_modes,  inter_b_modes);#endif     cc->this_frame_percent_intra = cpi->this_frame_percent_intra;}  void vp8_restore_coding_context(VP8_COMP *cpi){    CODING_CONTEXT *const cc = & cpi->coding_context;     // Restore key state variables to the snapshot state stored in the    // previous call to vp8_save_coding_context.     cpi->frames_since_key         =   cc->frames_since_key;    cpi->common.filter_level     =   cc->filter_level;    cpi->frames_till_gf_update_due  =   cc->frames_till_gf_update_due;    cpi->common.frames_since_golden       =   cc->frames_since_golden;     vp8_copy(cpi->common.fc.mvc, cc->mvc);     vp8_copy(cpi->mb.mvcosts, cc->mvcosts);     vp8_copy(cpi->common.kf_ymode_prob,   cc->kf_ymode_prob);    vp8_copy(cpi->common.fc.ymode_prob,   cc->ymode_prob);    vp8_copy(cpi->common.kf_uv_mode_prob,  cc->kf_uv_mode_prob);    vp8_copy(cpi->common.fc.uv_mode_prob,  cc->uv_mode_prob);     vp8_copy(cpi->ymode_count, cc->ymode_count);    vp8_copy(cpi->uv_mode_count, cc->uv_mode_count);     // Stats#ifdef MODE_STATS    vp8_copy(y_modes, cc->y_modes);    vp8_copy(uv_modes, cc->uv_modes);    vp8_copy(b_modes, cc->b_modes);    vp8_copy(inter_y_modes, cc->inter_y_modes);    vp8_copy(inter_uv_modes, cc->inter_uv_modes);    vp8_copy(inter_b_modes, cc->inter_b_modes);#endif      cpi->this_frame_percent_intra = cc->this_frame_percent_intra;}  void vp8_setup_key_frame(VP8_COMP *cpi){    // Setup for Key frame:     vp8_default_coef_probs(& cpi->common);    vp8_kf_default_bmode_probs(cpi->common.kf_bmode_prob);     vpx_memcpy(cpi->common.fc.mvc, vp8_default_mv_context, sizeof(vp8_default_mv_context));    {        int flag[2] = {1, 1};        vp8_build_component_cost_table(cpi->mb.mvcost, (const MV_CONTEXT *) cpi->common.fc.mvc, flag);    }     vpx_memset(cpi->common.fc.pre_mvc, 0, sizeof(cpi->common.fc.pre_mvc));  //initialize pre_mvc to all zero.     //cpi->common.filter_level = 0;      // Reset every key frame.    cpi->common.filter_level = cpi->common.base_qindex * 3 / 8 ;     // Provisional interval before next GF    if (cpi->auto_gold)        //cpi->frames_till_gf_update_due = DEFAULT_GF_INTERVAL;        cpi->frames_till_gf_update_due = cpi->baseline_gf_interval;    else        cpi->frames_till_gf_update_due = cpi->goldfreq;     cpi->common.refresh_golden_frame = TRUE;    cpi->common.refresh_alt_ref_frame = TRUE;}  static int estimate_bits_at_q(int frame_kind, int Q, int MBs,                              double correction_factor){    int Bpm = (int)(.5 + correction_factor * vp8_bits_per_mb[frame_kind][Q]);     /* Attempt to retain reasonable accuracy without overflow. The cutoff is     * chosen such that the maximum product of Bpm and MBs fits 31 bits. The     * largest Bpm takes 20 bits.     */    if (MBs > (1 << 11))        return (Bpm >> BPER_MB_NORMBITS) * MBs;    else        return (Bpm * MBs) >> BPER_MB_NORMBITS;}  static void calc_iframe_target_size(VP8_COMP *cpi){    // boost defaults to half second    int kf_boost;    int target;     // Clear down mmx registers to allow floating point in what follows    vp8_clear_system_state();  //__asm emms;     if (cpi->oxcf.fixed_q >= 0)    {        int Q = cpi->oxcf.key_q;         target = estimate_bits_at_q(INTRA_FRAME, Q, cpi->common.MBs,                                    cpi->key_frame_rate_correction_factor);    }    else if (cpi->pass == 2)    {        // New Two pass RC        target = cpi->per_frame_bandwidth;    }    // First Frame is a special case    else if (cpi->common.current_video_frame == 0)    {        /* 1 Pass there is no information on which to base size so use         * bandwidth per second * fraction of the initial buffer         * level         */        target = cpi->oxcf.starting_buffer_level / 2;         if(target > cpi->oxcf.target_bandwidth * 3 / 2)            target = cpi->oxcf.target_bandwidth * 3 / 2;    }    else    {        // if this keyframe was forced, use a more recent Q estimate        int Q = (cpi->common.frame_flags & FRAMEFLAGS_KEY)                ? cpi->avg_frame_qindex : cpi->ni_av_qi;         // Boost depends somewhat on frame rate        kf_boost = (int)(2 * cpi->output_frame_rate - 16);         // adjustment up based on q        kf_boost = kf_boost * kf_boost_qadjustment[Q] / 100;         // frame separation adjustment ( down)        if (cpi->frames_since_key  < cpi->output_frame_rate / 2)            kf_boost = (int)(kf_boost                       * cpi->frames_since_key / (cpi->output_frame_rate / 2));         if (kf_boost < 16)            kf_boost = 16;         target = ((16 + kf_boost) * cpi->per_frame_bandwidth) >> 4;    }      if (cpi->oxcf.rc_max_intra_bitrate_pct)    {        unsigned int max_rate = cpi->per_frame_bandwidth                                * cpi->oxcf.rc_max_intra_bitrate_pct / 100;         if (target > max_rate)            target = max_rate;    }     cpi->this_frame_target = target;     // TODO: if we separate rate targeting from Q targetting, move this.    // Reset the active worst quality to the baseline value for key frames.    if (cpi->pass != 2)        cpi->active_worst_quality = cpi->worst_quality; #if 0    {        FILE *f;         f = fopen("kf_boost.stt", "a");        //fprintf(f, " %8d %10d %10d %10d %10d %10d %10d\n",        //  cpi->common.current_video_frame,  cpi->target_bandwidth, cpi->frames_to_key, kf_boost_qadjustment[cpi->ni_av_qi], cpi->kf_boost, (cpi->this_frame_target *100 / cpi->per_frame_bandwidth), cpi->this_frame_target );         fprintf(f, " %8u %10d %10d %10d\n",                cpi->common.current_video_frame,  cpi->gfu_boost, cpi->baseline_gf_interval, cpi->source_alt_ref_pending);         fclose(f);    }#endif}  //  Do the best we can to define the parameteres for the next GF based on what information we have available.static void calc_gf_params(VP8_COMP *cpi){    int Q = (cpi->oxcf.fixed_q < 0) ? cpi->last_q[INTER_FRAME] : cpi->oxcf.fixed_q;    int Boost = 0;     int gf_frame_useage = 0;      // Golden frame useage since last GF    int tot_mbs = cpi->recent_ref_frame_usage[INTRA_FRAME]  +                  cpi->recent_ref_frame_usage[LAST_FRAME]   +                  cpi->recent_ref_frame_usage[GOLDEN_FRAME] +                  cpi->recent_ref_frame_usage[ALTREF_FRAME];     int pct_gf_active = (100 * cpi->gf_active_count) / (cpi->common.mb_rows * cpi->common.mb_cols);     // Reset the last boost indicator    //cpi->last_boost = 100;     if (tot_mbs)        gf_frame_useage = (cpi->recent_ref_frame_usage[GOLDEN_FRAME] + cpi->recent_ref_frame_usage[ALTREF_FRAME]) * 100 / tot_mbs;     if (pct_gf_active > gf_frame_useage)        gf_frame_useage = pct_gf_active;     // Not two pass    if (cpi->pass != 2)    {        // Single Pass lagged mode: TBD        if (FALSE)        {        }         // Single Pass compression: Has to use current and historical data        else        {#if 0            // Experimental code            int index = cpi->one_pass_frame_index;            int frames_to_scan = (cpi->max_gf_interval <= MAX_LAG_BUFFERS) ? cpi->max_gf_interval : MAX_LAG_BUFFERS;             /*            // *************** Experimental code - incomplete            double decay_val = 1.0;            double IIAccumulator = 0.0;            double last_iiaccumulator = 0.0;            double IIRatio;             cpi->one_pass_frame_index = cpi->common.current_video_frame%MAX_LAG_BUFFERS;             for ( i = 0; i < (frames_to_scan - 1); i++ )            {                if ( index < 0 )                    index = MAX_LAG_BUFFERS;                index --;                 if ( cpi->one_pass_frame_stats[index].frame_coded_error > 0.0 )                {                    IIRatio = cpi->one_pass_frame_stats[index].frame_intra_error / cpi->one_pass_frame_stats[index].frame_coded_error;                     if ( IIRatio > 30.0 )                        IIRatio = 30.0;                }                else

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