onyx_if.c 178 KB
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/*
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 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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 *
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 *  Use of this source code is governed by a BSD-style license
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 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
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 *  in the file PATENTS.  All contributing project authors may
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 *  be found in the AUTHORS file in the root of the source tree.
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 */


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#include "vpx_config.h"
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#include "./vpx_scale_rtcd.h"
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#include "vp8/common/onyxc_int.h"
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#include "vp8/common/blockd.h"
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#include "onyx_int.h"
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#include "vp8/common/systemdependent.h"
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#include "quantize.h"
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#include "vp8/common/alloccommon.h"
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#include "mcomp.h"
#include "firstpass.h"
#include "psnr.h"
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#include "vpx_scale/vpx_scale.h"
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#include "vp8/common/extend.h"
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#include "ratectrl.h"
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#include "vp8/common/quant_common.h"
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#include "segmentation.h"
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#if CONFIG_POSTPROC
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#include "vp8/common/postproc.h"
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#endif
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#include "vpx_mem/vpx_mem.h"
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#include "vp8/common/swapyv12buffer.h"
#include "vp8/common/threading.h"
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#include "vpx_ports/vpx_timer.h"
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#if ARCH_ARM
#include "vpx_ports/arm.h"
#endif
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#if CONFIG_MULTI_RES_ENCODING
#include "mr_dissim.h"
#endif
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#include "encodeframe.h"
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#include <math.h>
#include <stdio.h>
#include <limits.h>

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#if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
extern int vp8_update_coef_context(VP8_COMP *cpi);
extern void vp8_update_coef_probs(VP8_COMP *cpi);
#endif

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extern void vp8cx_pick_filter_level_fast(YV12_BUFFER_CONFIG *sd, VP8_COMP *cpi);
extern void vp8cx_set_alt_lf_level(VP8_COMP *cpi, int filt_val);
extern void vp8cx_pick_filter_level(YV12_BUFFER_CONFIG *sd, VP8_COMP *cpi);

extern void vp8_deblock_frame(YV12_BUFFER_CONFIG *source, YV12_BUFFER_CONFIG *post, int filt_lvl, int low_var_thresh, int flag);
extern void print_parms(VP8_CONFIG *ocf, char *filenam);
extern unsigned int vp8_get_processor_freq();
extern void print_tree_update_probs();
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extern int vp8cx_create_encoder_threads(VP8_COMP *cpi);
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extern void vp8cx_remove_encoder_threads(VP8_COMP *cpi);

int vp8_estimate_entropy_savings(VP8_COMP *cpi);
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int vp8_calc_ss_err(YV12_BUFFER_CONFIG *source, YV12_BUFFER_CONFIG *dest);
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extern void vp8_temporal_filter_prepare_c(VP8_COMP *cpi, int distance);
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static void set_default_lf_deltas(VP8_COMP *cpi);
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extern const int vp8_gf_interval_table[101];

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#if CONFIG_INTERNAL_STATS
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#include "math.h"

extern double vp8_calc_ssim
(
    YV12_BUFFER_CONFIG *source,
    YV12_BUFFER_CONFIG *dest,
    int lumamask,
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    double *weight
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);

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extern double vp8_calc_ssimg
(
    YV12_BUFFER_CONFIG *source,
    YV12_BUFFER_CONFIG *dest,
    double *ssim_y,
    double *ssim_u,
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    double *ssim_v
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);


#endif


#ifdef OUTPUT_YUV_SRC
FILE *yuv_file;
#endif

#if 0
FILE *framepsnr;
FILE *kf_list;
FILE *keyfile;
#endif

#if 0
extern int skip_true_count;
extern int skip_false_count;
#endif


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#ifdef VP8_ENTROPY_STATS
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extern int intra_mode_stats[10][10][10];
#endif

#ifdef SPEEDSTATS
unsigned int frames_at_speed[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned int tot_pm = 0;
unsigned int cnt_pm = 0;
unsigned int tot_ef = 0;
unsigned int cnt_ef = 0;
#endif

#ifdef MODE_STATS
extern unsigned __int64 Sectionbits[50];
extern 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 unsigned int inter_b_modes[15];
#endif

extern const int vp8_bits_per_mb[2][QINDEX_RANGE];

extern const int qrounding_factors[129];
extern const int qzbin_factors[129];
extern void vp8cx_init_quantizer(VP8_COMP *cpi);
extern const int vp8cx_base_skip_false_prob[128];

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/* Tables relating active max Q to active min Q */
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static const unsigned char kf_low_motion_minq[QINDEX_RANGE] =
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{
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    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,
    3,3,3,3,3,3,4,4,4,5,5,5,5,5,6,6,
    6,6,7,7,8,8,8,8,9,9,10,10,10,10,11,11,
    11,11,12,12,13,13,13,13,14,14,15,15,15,15,16,16,
    16,16,17,17,18,18,18,18,19,20,20,21,21,22,23,23
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};
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static const unsigned char kf_high_motion_minq[QINDEX_RANGE] =
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{
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    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    1,1,1,1,1,1,1,1,2,2,2,2,3,3,3,3,
    3,3,3,3,4,4,4,4,5,5,5,5,5,5,6,6,
    6,6,7,7,8,8,8,8,9,9,10,10,10,10,11,11,
    11,11,12,12,13,13,13,13,14,14,15,15,15,15,16,16,
    16,16,17,17,18,18,18,18,19,19,20,20,20,20,21,21,
    21,21,22,22,23,23,24,25,25,26,26,27,28,28,29,30
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};
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static const unsigned char gf_low_motion_minq[QINDEX_RANGE] =
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{
    0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,
    3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,
    7,7,7,7,8,8,8,8,9,9,9,9,10,10,10,10,
    11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,
    19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,
    27,27,28,28,29,29,30,30,31,31,32,32,33,33,34,34,
    35,35,36,36,37,37,38,38,39,39,40,40,41,41,42,42,
    43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58
};
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static const unsigned char gf_mid_motion_minq[QINDEX_RANGE] =
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{
    0,0,0,0,1,1,1,1,1,1,2,2,3,3,3,4,
    4,4,5,5,5,6,6,6,7,7,7,8,8,8,9,9,
    9,10,10,10,10,11,11,11,12,12,12,12,13,13,13,14,
    14,14,15,15,16,16,17,17,18,18,19,19,20,20,21,21,
    22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,
    30,30,31,31,32,32,33,33,34,34,35,35,36,36,37,37,
    38,39,39,40,40,41,41,42,42,43,43,44,45,46,47,48,
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    49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64
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};
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static const unsigned char gf_high_motion_minq[QINDEX_RANGE] =
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{
    0,0,0,0,1,1,1,1,1,2,2,2,3,3,3,4,
    4,4,5,5,5,6,6,6,7,7,7,8,8,8,9,9,
    9,10,10,10,11,11,12,12,13,13,14,14,15,15,16,16,
    17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,
    25,25,26,26,27,27,28,28,29,29,30,30,31,31,32,32,
    33,33,34,34,35,35,36,36,37,37,38,38,39,39,40,40,
    41,41,42,42,43,44,45,46,47,48,49,50,51,52,53,54,
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    55,56,57,58,59,60,62,64,66,68,70,72,74,76,78,80
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};
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static const unsigned char inter_minq[QINDEX_RANGE] =
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{
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    0,0,1,1,2,3,3,4,4,5,6,6,7,8,8,9,
    9,10,11,11,12,13,13,14,15,15,16,17,17,18,19,20,
    20,21,22,22,23,24,24,25,26,27,27,28,29,30,30,31,
    32,33,33,34,35,36,36,37,38,39,39,40,41,42,42,43,
    44,45,46,46,47,48,49,50,50,51,52,53,54,55,55,56,
    57,58,59,60,60,61,62,63,64,65,66,67,67,68,69,70,
    71,72,73,74,75,75,76,77,78,79,80,81,82,83,84,85,
    86,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100
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};
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#ifdef PACKET_TESTING
extern FILE *vpxlogc;
#endif

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static void save_layer_context(VP8_COMP *cpi)
{
    LAYER_CONTEXT *lc = &cpi->layer_context[cpi->current_layer];

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    /* Save layer dependent coding state */
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    lc->target_bandwidth                 = cpi->target_bandwidth;
    lc->starting_buffer_level            = cpi->oxcf.starting_buffer_level;
    lc->optimal_buffer_level             = cpi->oxcf.optimal_buffer_level;
    lc->maximum_buffer_size              = cpi->oxcf.maximum_buffer_size;
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    lc->starting_buffer_level_in_ms      = cpi->oxcf.starting_buffer_level_in_ms;
    lc->optimal_buffer_level_in_ms       = cpi->oxcf.optimal_buffer_level_in_ms;
    lc->maximum_buffer_size_in_ms        = cpi->oxcf.maximum_buffer_size_in_ms;
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    lc->buffer_level                     = cpi->buffer_level;
    lc->bits_off_target                  = cpi->bits_off_target;
    lc->total_actual_bits                = cpi->total_actual_bits;
    lc->worst_quality                    = cpi->worst_quality;
    lc->active_worst_quality             = cpi->active_worst_quality;
    lc->best_quality                     = cpi->best_quality;
    lc->active_best_quality              = cpi->active_best_quality;
    lc->ni_av_qi                         = cpi->ni_av_qi;
    lc->ni_tot_qi                        = cpi->ni_tot_qi;
    lc->ni_frames                        = cpi->ni_frames;
    lc->avg_frame_qindex                 = cpi->avg_frame_qindex;
    lc->rate_correction_factor           = cpi->rate_correction_factor;
    lc->key_frame_rate_correction_factor = cpi->key_frame_rate_correction_factor;
    lc->gf_rate_correction_factor        = cpi->gf_rate_correction_factor;
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    lc->zbin_over_quant                  = cpi->mb.zbin_over_quant;
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    lc->inter_frame_target               = cpi->inter_frame_target;
    lc->total_byte_count                 = cpi->total_byte_count;
    lc->filter_level                     = cpi->common.filter_level;

    lc->last_frame_percent_intra         = cpi->last_frame_percent_intra;

    memcpy (lc->count_mb_ref_frame_usage,
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            cpi->mb.count_mb_ref_frame_usage,
            sizeof(cpi->mb.count_mb_ref_frame_usage));
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}

static void restore_layer_context(VP8_COMP *cpi, const int layer)
{
    LAYER_CONTEXT *lc = &cpi->layer_context[layer];

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    /* Restore layer dependent coding state */
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    cpi->current_layer                    = layer;
    cpi->target_bandwidth                 = lc->target_bandwidth;
    cpi->oxcf.target_bandwidth            = lc->target_bandwidth;
    cpi->oxcf.starting_buffer_level       = lc->starting_buffer_level;
    cpi->oxcf.optimal_buffer_level        = lc->optimal_buffer_level;
    cpi->oxcf.maximum_buffer_size         = lc->maximum_buffer_size;
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    cpi->oxcf.starting_buffer_level_in_ms = lc->starting_buffer_level_in_ms;
    cpi->oxcf.optimal_buffer_level_in_ms  = lc->optimal_buffer_level_in_ms;
    cpi->oxcf.maximum_buffer_size_in_ms   = lc->maximum_buffer_size_in_ms;
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    cpi->buffer_level                     = lc->buffer_level;
    cpi->bits_off_target                  = lc->bits_off_target;
    cpi->total_actual_bits                = lc->total_actual_bits;
    cpi->active_worst_quality             = lc->active_worst_quality;
    cpi->active_best_quality              = lc->active_best_quality;
    cpi->ni_av_qi                         = lc->ni_av_qi;
    cpi->ni_tot_qi                        = lc->ni_tot_qi;
    cpi->ni_frames                        = lc->ni_frames;
    cpi->avg_frame_qindex                 = lc->avg_frame_qindex;
    cpi->rate_correction_factor           = lc->rate_correction_factor;
    cpi->key_frame_rate_correction_factor = lc->key_frame_rate_correction_factor;
    cpi->gf_rate_correction_factor        = lc->gf_rate_correction_factor;
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    cpi->mb.zbin_over_quant                  = lc->zbin_over_quant;
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    cpi->inter_frame_target               = lc->inter_frame_target;
    cpi->total_byte_count                 = lc->total_byte_count;
    cpi->common.filter_level              = lc->filter_level;

    cpi->last_frame_percent_intra         = lc->last_frame_percent_intra;

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    memcpy (cpi->mb.count_mb_ref_frame_usage,
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            lc->count_mb_ref_frame_usage,
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            sizeof(cpi->mb.count_mb_ref_frame_usage));
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}

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static int rescale(int val, int num, int denom)
{
    int64_t llnum = num;
    int64_t llden = denom;
    int64_t llval = val;

    return (int)(llval * llnum / llden);
}

static void init_temporal_layer_context(VP8_COMP *cpi,
                                        VP8_CONFIG *oxcf,
                                        const int layer,
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                                        double prev_layer_framerate)
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{
    LAYER_CONTEXT *lc = &cpi->layer_context[layer];

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    lc->framerate = cpi->output_framerate / cpi->oxcf.rate_decimator[layer];
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    lc->target_bandwidth = cpi->oxcf.target_bitrate[layer] * 1000;

    lc->starting_buffer_level_in_ms = oxcf->starting_buffer_level;
    lc->optimal_buffer_level_in_ms  = oxcf->optimal_buffer_level;
    lc->maximum_buffer_size_in_ms   = oxcf->maximum_buffer_size;

    lc->starting_buffer_level =
        rescale((int)(oxcf->starting_buffer_level),
                lc->target_bandwidth, 1000);

    if (oxcf->optimal_buffer_level == 0)
      lc->optimal_buffer_level = lc->target_bandwidth / 8;
    else
      lc->optimal_buffer_level =
          rescale((int)(oxcf->optimal_buffer_level),
                  lc->target_bandwidth, 1000);

    if (oxcf->maximum_buffer_size == 0)
      lc->maximum_buffer_size = lc->target_bandwidth / 8;
    else
      lc->maximum_buffer_size =
          rescale((int)(oxcf->maximum_buffer_size),
                  lc->target_bandwidth, 1000);

    /* Work out the average size of a frame within this layer */
    if (layer > 0)
      lc->avg_frame_size_for_layer =
          (int)((cpi->oxcf.target_bitrate[layer] -
                cpi->oxcf.target_bitrate[layer-1]) * 1000 /
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                (lc->framerate - prev_layer_framerate));
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     lc->active_worst_quality         = cpi->oxcf.worst_allowed_q;
     lc->active_best_quality          = cpi->oxcf.best_allowed_q;
     lc->avg_frame_qindex             = cpi->oxcf.worst_allowed_q;

     lc->buffer_level                 = lc->starting_buffer_level;
     lc->bits_off_target              = lc->starting_buffer_level;

     lc->total_actual_bits                 = 0;
     lc->ni_av_qi                          = 0;
     lc->ni_tot_qi                         = 0;
     lc->ni_frames                         = 0;
     lc->rate_correction_factor            = 1.0;
     lc->key_frame_rate_correction_factor  = 1.0;
     lc->gf_rate_correction_factor         = 1.0;
     lc->inter_frame_target                = 0;
}

// Upon a run-time change in temporal layers, reset the layer context parameters
// for any "new" layers. For "existing" layers, let them inherit the parameters
// from the previous layer state (at the same layer #). In future we may want
// to better map the previous layer state(s) to the "new" ones.
static void reset_temporal_layer_change(VP8_COMP *cpi,
                                        VP8_CONFIG *oxcf,
                                        const int prev_num_layers)
{
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    int i;
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    double prev_layer_framerate = 0;
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    const int curr_num_layers = cpi->oxcf.number_of_layers;
    // If the previous state was 1 layer, get current layer context from cpi.
    // We need this to set the layer context for the new layers below.
    if (prev_num_layers == 1)
    {
        cpi->current_layer = 0;
        save_layer_context(cpi);
    }
    for (i = 0; i < curr_num_layers; i++)
    {
        LAYER_CONTEXT *lc = &cpi->layer_context[i];
        if (i >= prev_num_layers)
        {
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           init_temporal_layer_context(cpi, oxcf, i, prev_layer_framerate);
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        }
        // The initial buffer levels are set based on their starting levels.
        // We could set the buffer levels based on the previous state (normalized
        // properly by the layer bandwidths) but we would need to keep track of
        // the previous set of layer bandwidths (i.e., target_bitrate[i])
        // before the layer change. For now, reset to the starting levels.
        lc->buffer_level = cpi->oxcf.starting_buffer_level_in_ms *
                           cpi->oxcf.target_bitrate[i];
        lc->bits_off_target = lc->buffer_level;
        // TDOD(marpan): Should we set the rate_correction_factor and
        // active_worst/best_quality to values derived from the previous layer
        // state (to smooth-out quality dips/rate fluctuation at transition)?

        // We need to treat the 1 layer case separately: oxcf.target_bitrate[i]
        // is not set for 1 layer, and the restore_layer_context/save_context()
        // are not called in the encoding loop, so we need to call it here to
        // pass the layer context state to |cpi|.
        if (curr_num_layers == 1)
        {
            lc->target_bandwidth = cpi->oxcf.target_bandwidth;
            lc->buffer_level = cpi->oxcf.starting_buffer_level_in_ms *
                               lc->target_bandwidth  / 1000;
            lc->bits_off_target = lc->buffer_level;
            restore_layer_context(cpi, 0);
        }
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        prev_layer_framerate = cpi->output_framerate /
                               cpi->oxcf.rate_decimator[i];
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    }
}

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static void setup_features(VP8_COMP *cpi)
{
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    // If segmentation enabled set the update flags
    if ( cpi->mb.e_mbd.segmentation_enabled )
    {
        cpi->mb.e_mbd.update_mb_segmentation_map = 1;
        cpi->mb.e_mbd.update_mb_segmentation_data = 1;
    }
    else
    {
        cpi->mb.e_mbd.update_mb_segmentation_map = 0;
        cpi->mb.e_mbd.update_mb_segmentation_data = 0;
    }
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    cpi->mb.e_mbd.mode_ref_lf_delta_enabled = 0;
    cpi->mb.e_mbd.mode_ref_lf_delta_update = 0;
    vpx_memset(cpi->mb.e_mbd.ref_lf_deltas, 0, sizeof(cpi->mb.e_mbd.ref_lf_deltas));
    vpx_memset(cpi->mb.e_mbd.mode_lf_deltas, 0, sizeof(cpi->mb.e_mbd.mode_lf_deltas));
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    vpx_memset(cpi->mb.e_mbd.last_ref_lf_deltas, 0, sizeof(cpi->mb.e_mbd.ref_lf_deltas));
    vpx_memset(cpi->mb.e_mbd.last_mode_lf_deltas, 0, sizeof(cpi->mb.e_mbd.mode_lf_deltas));
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    set_default_lf_deltas(cpi);
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}


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static void dealloc_raw_frame_buffers(VP8_COMP *cpi);


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static void dealloc_compressor_data(VP8_COMP *cpi)
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{
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    vpx_free(cpi->tplist);
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    cpi->tplist = NULL;

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    /* Delete last frame MV storage buffers */
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    vpx_free(cpi->lfmv);
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    cpi->lfmv = 0;

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    vpx_free(cpi->lf_ref_frame_sign_bias);
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    cpi->lf_ref_frame_sign_bias = 0;

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    vpx_free(cpi->lf_ref_frame);
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    cpi->lf_ref_frame = 0;
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    /* Delete sementation map */
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    vpx_free(cpi->segmentation_map);
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    cpi->segmentation_map = 0;

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    vpx_free(cpi->active_map);
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    cpi->active_map = 0;

    vp8_de_alloc_frame_buffers(&cpi->common);

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    vp8_yv12_de_alloc_frame_buffer(&cpi->pick_lf_lvl_frame);
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    vp8_yv12_de_alloc_frame_buffer(&cpi->scaled_source);
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    dealloc_raw_frame_buffers(cpi);
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    vpx_free(cpi->tok);
    cpi->tok = 0;

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    /* Structure used to monitor GF usage */
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    vpx_free(cpi->gf_active_flags);
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    cpi->gf_active_flags = 0;

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    /* Activity mask based per mb zbin adjustments */
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    vpx_free(cpi->mb_activity_map);
    cpi->mb_activity_map = 0;

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    vpx_free(cpi->mb.pip);
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    cpi->mb.pip = 0;
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#if CONFIG_MULTITHREAD
    vpx_free(cpi->mt_current_mb_col);
    cpi->mt_current_mb_col = NULL;
#endif
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}

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static void enable_segmentation(VP8_COMP *cpi)
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{
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    /* Set the appropriate feature bit */
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    cpi->mb.e_mbd.segmentation_enabled = 1;
    cpi->mb.e_mbd.update_mb_segmentation_map = 1;
    cpi->mb.e_mbd.update_mb_segmentation_data = 1;
}
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static void disable_segmentation(VP8_COMP *cpi)
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{
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    /* Clear the appropriate feature bit */
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    cpi->mb.e_mbd.segmentation_enabled = 0;
}

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/* Valid values for a segment are 0 to 3
 * Segmentation map is arrange as [Rows][Columns]
 */
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static void set_segmentation_map(VP8_COMP *cpi, unsigned char *segmentation_map)
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{
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    /* Copy in the new segmentation map */
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    vpx_memcpy(cpi->segmentation_map, segmentation_map, (cpi->common.mb_rows * cpi->common.mb_cols));

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    /* Signal that the map should be updated. */
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    cpi->mb.e_mbd.update_mb_segmentation_map = 1;
    cpi->mb.e_mbd.update_mb_segmentation_data = 1;
}

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/* The values given for each segment can be either deltas (from the default
 * value chosen for the frame) or absolute values.
 *
 * Valid range for abs values is:
 *    (0-127 for MB_LVL_ALT_Q), (0-63 for SEGMENT_ALT_LF)
 * Valid range for delta values are:
 *    (+/-127 for MB_LVL_ALT_Q), (+/-63 for SEGMENT_ALT_LF)
 *
 * abs_delta = SEGMENT_DELTADATA (deltas)
 * abs_delta = SEGMENT_ABSDATA (use the absolute values given).
 *
 */
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static void set_segment_data(VP8_COMP *cpi, signed char *feature_data, unsigned char abs_delta)
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{
    cpi->mb.e_mbd.mb_segement_abs_delta = abs_delta;
    vpx_memcpy(cpi->segment_feature_data, feature_data, sizeof(cpi->segment_feature_data));
}


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static void segmentation_test_function(VP8_COMP *cpi)
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{
    unsigned char *seg_map;
    signed char feature_data[MB_LVL_MAX][MAX_MB_SEGMENTS];

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    // Create a temporary map for segmentation data.
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    CHECK_MEM_ERROR(seg_map, vpx_calloc(cpi->common.mb_rows * cpi->common.mb_cols, 1));

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    // Set the segmentation Map
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    set_segmentation_map(cpi, seg_map);
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    // Activate segmentation.
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    enable_segmentation(cpi);
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    // Set up the quant segment data
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    feature_data[MB_LVL_ALT_Q][0] = 0;
    feature_data[MB_LVL_ALT_Q][1] = 4;
    feature_data[MB_LVL_ALT_Q][2] = 0;
    feature_data[MB_LVL_ALT_Q][3] = 0;
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    // Set up the loop segment data
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    feature_data[MB_LVL_ALT_LF][0] = 0;
    feature_data[MB_LVL_ALT_LF][1] = 0;
    feature_data[MB_LVL_ALT_LF][2] = 0;
    feature_data[MB_LVL_ALT_LF][3] = 0;

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    // Initialise the feature data structure
    // SEGMENT_DELTADATA    0, SEGMENT_ABSDATA      1
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    set_segment_data(cpi, &feature_data[0][0], SEGMENT_DELTADATA);
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    // Delete sementation map
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    vpx_free(seg_map);
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    seg_map = 0;
}

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/* A simple function to cyclically refresh the background at a lower Q */
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static void cyclic_background_refresh(VP8_COMP *cpi, int Q, int lf_adjustment)
{
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    unsigned char *seg_map = cpi->segmentation_map;
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    signed char feature_data[MB_LVL_MAX][MAX_MB_SEGMENTS];
    int i;
    int block_count = cpi->cyclic_refresh_mode_max_mbs_perframe;
    int mbs_in_frame = cpi->common.mb_rows * cpi->common.mb_cols;

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    cpi->cyclic_refresh_q = Q / 2;
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    // Set every macroblock to be eligible for update.
    // For key frame this will reset seg map to 0.
    vpx_memset(cpi->segmentation_map, 0, mbs_in_frame);

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    if (cpi->common.frame_type != KEY_FRAME)
    {
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        /* Cycle through the macro_block rows */
        /* MB loop to set local segmentation map */
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        i = cpi->cyclic_refresh_mode_index;
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        assert(i < mbs_in_frame);
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        do
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        {
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          /* If the MB is as a candidate for clean up then mark it for
           * possible boost/refresh (segment 1) The segment id may get
           * reset to 0 later if the MB gets coded anything other than
           * last frame 0,0 as only (last frame 0,0) MBs are eligable for
           * refresh : that is to say Mbs likely to be background blocks.
           */
          if (cpi->cyclic_refresh_map[i] == 0)
          {
              seg_map[i] = 1;
              block_count --;
          }
          else if (cpi->cyclic_refresh_map[i] < 0)
              cpi->cyclic_refresh_map[i]++;

          i++;
          if (i == mbs_in_frame)
              i = 0;
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        }
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        while(block_count && i != cpi->cyclic_refresh_mode_index);
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        cpi->cyclic_refresh_mode_index = i;
    }

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    /* Activate segmentation. */
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    cpi->mb.e_mbd.update_mb_segmentation_map = 1;
    cpi->mb.e_mbd.update_mb_segmentation_data = 1;
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    enable_segmentation(cpi);
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    /* Set up the quant segment data */
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    feature_data[MB_LVL_ALT_Q][0] = 0;
    feature_data[MB_LVL_ALT_Q][1] = (cpi->cyclic_refresh_q - Q);
    feature_data[MB_LVL_ALT_Q][2] = 0;
    feature_data[MB_LVL_ALT_Q][3] = 0;

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    /* Set up the loop segment data */
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    feature_data[MB_LVL_ALT_LF][0] = 0;
    feature_data[MB_LVL_ALT_LF][1] = lf_adjustment;
    feature_data[MB_LVL_ALT_LF][2] = 0;
    feature_data[MB_LVL_ALT_LF][3] = 0;

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    /* Initialise the feature data structure */
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    set_segment_data(cpi, &feature_data[0][0], SEGMENT_DELTADATA);
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}

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static void set_default_lf_deltas(VP8_COMP *cpi)
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{
    cpi->mb.e_mbd.mode_ref_lf_delta_enabled = 1;
    cpi->mb.e_mbd.mode_ref_lf_delta_update = 1;

    vpx_memset(cpi->mb.e_mbd.ref_lf_deltas, 0, sizeof(cpi->mb.e_mbd.ref_lf_deltas));
    vpx_memset(cpi->mb.e_mbd.mode_lf_deltas, 0, sizeof(cpi->mb.e_mbd.mode_lf_deltas));

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    /* Test of ref frame deltas */
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    cpi->mb.e_mbd.ref_lf_deltas[INTRA_FRAME] = 2;
    cpi->mb.e_mbd.ref_lf_deltas[LAST_FRAME] = 0;
    cpi->mb.e_mbd.ref_lf_deltas[GOLDEN_FRAME] = -2;
    cpi->mb.e_mbd.ref_lf_deltas[ALTREF_FRAME] = -2;

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    cpi->mb.e_mbd.mode_lf_deltas[0] = 4;               /* BPRED */
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    if(cpi->oxcf.Mode == MODE_REALTIME)
      cpi->mb.e_mbd.mode_lf_deltas[1] = -12;              /* Zero */
    else
      cpi->mb.e_mbd.mode_lf_deltas[1] = -2;              /* Zero */

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    cpi->mb.e_mbd.mode_lf_deltas[2] = 2;               /* New mv */
    cpi->mb.e_mbd.mode_lf_deltas[3] = 4;               /* Split mv */
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}

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/* Convenience macros for mapping speed and mode into a continuous
 * range
 */
#define GOOD(x) (x+1)
#define RT(x) (x+7)

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static int speed_map(int speed, const int *map)
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{
    int res;

    do
    {
        res = *map++;
    } while(speed >= *map++);
    return res;
}

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static const int thresh_mult_map_znn[] = {
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    /* map common to zero, nearest, and near */
    0, GOOD(2), 1500, GOOD(3), 2000, RT(0), 1000, RT(2), 2000, INT_MAX
};

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static const int thresh_mult_map_vhpred[] = {
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    1000, GOOD(2), 1500, GOOD(3), 2000, RT(0), 1000, RT(1), 2000,
    RT(7), INT_MAX, INT_MAX
};

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static const int thresh_mult_map_bpred[] = {
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    2000, GOOD(0), 2500, GOOD(2), 5000, GOOD(3), 7500, RT(0), 2500, RT(1), 5000,
    RT(6), INT_MAX, INT_MAX
};

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static const int thresh_mult_map_tm[] = {
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    1000, GOOD(2), 1500, GOOD(3), 2000, RT(0), 0, RT(1), 1000, RT(2), 2000,
    RT(7), INT_MAX, INT_MAX
};

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static const int thresh_mult_map_new1[] = {
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    1000, GOOD(2), 2000, RT(0), 2000, INT_MAX
};

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static const int thresh_mult_map_new2[] = {
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    1000, GOOD(2), 2000, GOOD(3), 2500, GOOD(5), 4000, RT(0), 2000, RT(2), 2500,
    RT(5), 4000, INT_MAX
};

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static const int thresh_mult_map_split1[] = {
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    2500, GOOD(0), 1700, GOOD(2), 10000, GOOD(3), 25000, GOOD(4), INT_MAX,
    RT(0), 5000, RT(1), 10000, RT(2), 25000, RT(3), INT_MAX, INT_MAX
};

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static const int thresh_mult_map_split2[] = {
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    5000, GOOD(0), 4500, GOOD(2), 20000, GOOD(3), 50000, GOOD(4), INT_MAX,
    RT(0), 10000, RT(1), 20000, RT(2), 50000, RT(3), INT_MAX, INT_MAX
};

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static const int mode_check_freq_map_zn2[] = {
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    /* {zero,nearest}{2,3} */
    0, RT(10), 1<<1, RT(11), 1<<2, RT(12), 1<<3, INT_MAX
};

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static const int mode_check_freq_map_vhbpred[] = {
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    0, GOOD(5), 2, RT(0), 0, RT(3), 2, RT(5), 4, INT_MAX
};

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static const int mode_check_freq_map_near2[] = {
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    0, GOOD(5), 2, RT(0), 0, RT(3), 2, RT(10), 1<<2, RT(11), 1<<3, RT(12), 1<<4,
    INT_MAX
};

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static const int mode_check_freq_map_new1[] = {
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    0, RT(10), 1<<1, RT(11), 1<<2, RT(12), 1<<3, INT_MAX
};

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static const int mode_check_freq_map_new2[] = {
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    0, GOOD(5), 4, RT(0), 0, RT(3), 4, RT(10), 1<<3, RT(11), 1<<4, RT(12), 1<<5,
    INT_MAX
};

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static const int mode_check_freq_map_split1[] = {
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    0, GOOD(2), 2, GOOD(3), 7, RT(1), 2, RT(2), 7, INT_MAX
};

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static const int mode_check_freq_map_split2[] = {
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    0, GOOD(1), 2, GOOD(2), 4, GOOD(3), 15, RT(1), 4, RT(2), 15, INT_MAX
};

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void vp8_set_speed_features(VP8_COMP *cpi)
{
    SPEED_FEATURES *sf = &cpi->sf;
    int Mode = cpi->compressor_speed;
    int Speed = cpi->Speed;
    int i;
    VP8_COMMON *cm = &cpi->common;
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    int last_improved_quant = sf->improved_quant;
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    int ref_frames;
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    /* Initialise default mode frequency sampling variables */
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    for (i = 0; i < MAX_MODES; i ++)
    {
        cpi->mode_check_freq[i] = 0;
    }

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    cpi->mb.mbs_tested_so_far = 0;
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    /* best quality defaults */
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    sf->RD = 1;
    sf->search_method = NSTEP;
    sf->improved_quant = 1;
    sf->improved_dct = 1;
    sf->auto_filter = 1;
    sf->recode_loop = 1;
    sf->quarter_pixel_search = 1;
    sf->half_pixel_search = 1;
    sf->iterative_sub_pixel = 1;
    sf->optimize_coefficients = 1;
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    sf->use_fastquant_for_pick = 0;
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    sf->no_skip_block4x4_search = 1;
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    sf->first_step = 0;
    sf->max_step_search_steps = MAX_MVSEARCH_STEPS;
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    sf->improved_mv_pred = 1;
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    /* default thresholds to 0 */
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    for (i = 0; i < MAX_MODES; i++)
        sf->thresh_mult[i] = 0;

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    /* Count enabled references */
    ref_frames = 1;
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    if (cpi->ref_frame_flags & VP8_LAST_FRAME)
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        ref_frames++;
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    if (cpi->ref_frame_flags & VP8_GOLD_FRAME)
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        ref_frames++;
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    if (cpi->ref_frame_flags & VP8_ALTR_FRAME)
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        ref_frames++;

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    /* Convert speed to continuous range, with clamping */
    if (Mode == 0)
        Speed = 0;
    else if (Mode == 2)
        Speed = RT(Speed);
    else
    {
        if (Speed > 5)
            Speed = 5;
        Speed = GOOD(Speed);
    }

    sf->thresh_mult[THR_ZERO1] =
    sf->thresh_mult[THR_NEAREST1] =
    sf->thresh_mult[THR_NEAR1] =
    sf->thresh_mult[THR_DC] = 0; /* always */

    sf->thresh_mult[THR_ZERO2] =
    sf->thresh_mult[THR_ZERO3] =
    sf->thresh_mult[THR_NEAREST2] =
    sf->thresh_mult[THR_NEAREST3] =
    sf->thresh_mult[THR_NEAR2]  =
    sf->thresh_mult[THR_NEAR3]  = speed_map(Speed, thresh_mult_map_znn);

    sf->thresh_mult[THR_V_PRED] =
    sf->thresh_mult[THR_H_PRED] = speed_map(Speed, thresh_mult_map_vhpred);
    sf->thresh_mult[THR_B_PRED] = speed_map(Speed, thresh_mult_map_bpred);
    sf->thresh_mult[THR_TM]     = speed_map(Speed, thresh_mult_map_tm);
    sf->thresh_mult[THR_NEW1]   = speed_map(Speed, thresh_mult_map_new1);
    sf->thresh_mult[THR_NEW2]   =
    sf->thresh_mult[THR_NEW3]   = speed_map(Speed, thresh_mult_map_new2);
    sf->thresh_mult[THR_SPLIT1] = speed_map(Speed, thresh_mult_map_split1);
    sf->thresh_mult[THR_SPLIT2] =
    sf->thresh_mult[THR_SPLIT3] = speed_map(Speed, thresh_mult_map_split2);

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    cpi->mode_check_freq[THR_ZERO1] =
    cpi->mode_check_freq[THR_NEAREST1] =
    cpi->mode_check_freq[THR_NEAR1] =
    cpi->mode_check_freq[THR_TM]     =
    cpi->mode_check_freq[THR_DC] = 0; /* always */

    cpi->mode_check_freq[THR_ZERO2] =
    cpi->mode_check_freq[THR_ZERO3] =
    cpi->mode_check_freq[THR_NEAREST2] =
    cpi->mode_check_freq[THR_NEAREST3] = speed_map(Speed,
                                                   mode_check_freq_map_zn2);

    cpi->mode_check_freq[THR_NEAR2]  =
    cpi->mode_check_freq[THR_NEAR3]  = speed_map(Speed,
                                                 mode_check_freq_map_near2);

    cpi->mode_check_freq[THR_V_PRED] =
    cpi->mode_check_freq[THR_H_PRED] =
    cpi->mode_check_freq[THR_B_PRED] = speed_map(Speed,
                                                 mode_check_freq_map_vhbpred);
    cpi->mode_check_freq[THR_NEW1]   = speed_map(Speed,
                                                 mode_check_freq_map_new1);
    cpi->mode_check_freq[THR_NEW2]   =
    cpi->mode_check_freq[THR_NEW3]   = speed_map(Speed,
                                                 mode_check_freq_map_new2);
    cpi->mode_check_freq[THR_SPLIT1] = speed_map(Speed,
                                                 mode_check_freq_map_split1);
    cpi->mode_check_freq[THR_SPLIT2] =
    cpi->mode_check_freq[THR_SPLIT3] = speed_map(Speed,
                                                 mode_check_freq_map_split2);
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    Speed = cpi->Speed;
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    switch (Mode)
    {
#if !(CONFIG_REALTIME_ONLY)
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    case 0: /* best quality mode */
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        sf->first_step = 0;
        sf->max_step_search_steps = MAX_MVSEARCH_STEPS;
        break;
    case 1:
    case 3:
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        if (Speed > 0)
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        {
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            /* Disable coefficient optimization above speed 0 */
            sf->optimize_coefficients = 0;
            sf->use_fastquant_for_pick = 1;
            sf->no_skip_block4x4_search = 0;
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            sf->first_step = 1;
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        }

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        if (Speed > 2)
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        {
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            sf->improved_quant = 0;
            sf->improved_dct = 0;

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            /* Only do recode loop on key frames, golden frames and
             * alt ref frames
             */
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            sf->recode_loop = 2;

        }

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        if (Speed > 3)
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        {
            sf->auto_filter = 1;
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            sf->recode_loop = 0; /* recode loop off */
            sf->RD = 0;         /* Turn rd off */
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        }

        if (Speed > 4)
        {
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            sf->auto_filter = 0;  /* Faster selection of loop filter */
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        }

        break;
#endif
    case 2:
        sf->optimize_coefficients = 0;
        sf->recode_loop = 0;
        sf->auto_filter = 1;
        sf->iterative_sub_pixel = 1;
        sf->search_method = NSTEP;

        if (Speed > 0)
        {
            sf->improved_quant = 0;
            sf->improved_dct = 0;
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            sf->use_fastquant_for_pick = 1;
            sf->no_skip_block4x4_search = 0;
            sf->first_step = 1;
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        }

        if (Speed > 2)
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            sf->auto_filter = 0;  /* Faster selection of loop filter */
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        if (Speed > 3)
        {
            sf->RD = 0;
            sf->auto_filter = 1;
        }

        if (Speed > 4)
        {
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            sf->auto_filter = 0;  /* Faster selection of loop filter */
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            sf->search_method = HEX;
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            sf->iterative_sub_pixel = 0;
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        }

        if (Speed > 6)
        {
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            unsigned int sum = 0;
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            unsigned int total_mbs = cm->MBs;
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            int thresh;
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            unsigned int total_skip;
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            int min = 2000;

            if (cpi->oxcf.encode_breakout > 2000)
                min = cpi->oxcf.encode_breakout;

            min >>= 7;

            for (i = 0; i < min; i++)
            {
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                sum += cpi->mb.error_bins[i];
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            }

            total_skip = sum;
            sum = 0;

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            /* i starts from 2 to make sure thresh started from 2048 */
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            for (; i < 1024; i++)
            {
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                sum += cpi->mb.error_bins[i];
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                if (10 * sum >= (unsigned int)(cpi->Speed - 6)*(total_mbs - total_skip))
                    break;
            }

            i--;
            thresh = (i << 7);

            if (thresh < 2000)
                thresh = 2000;

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            if (ref_frames > 1)
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            {
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                sf->thresh_mult[THR_NEW1 ] = thresh;
                sf->thresh_mult[THR_NEAREST1  ] = thresh >> 1;
                sf->thresh_mult[THR_NEAR1     ] = thresh >> 1;
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            }

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            if (ref_frames > 2)
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            {
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                sf->thresh_mult[THR_NEW2] = thresh << 1;
                sf->thresh_mult[THR_NEAREST2 ] = thresh;
                sf->thresh_mult[THR_NEAR2    ] = thresh;
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            }

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            if (ref_frames > 3)
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            {
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                sf->thresh_mult[THR_NEW3] = thresh << 1;
                sf->thresh_mult[THR_NEAREST3 ] = thresh;
                sf->thresh_mult[THR_NEAR3    ] = thresh;
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            }

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            sf->improved_mv_pred = 0;
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        }

        if (Speed > 8)
            sf->quarter_pixel_search = 0;

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        if(cm->version == 0)
        {
            cm->filter_type = NORMAL_LOOPFILTER;
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            if (Speed >= 14)
                cm->filter_type = SIMPLE_LOOPFILTER;
        }
        else
        {
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            cm->filter_type = SIMPLE_LOOPFILTER;
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        }
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        /* This has a big hit on quality. Last resort */
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        if (Speed >= 15)
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            sf->half_pixel_search = 0;
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        vpx_memset(cpi->mb.error_bins, 0, sizeof(cpi->mb.error_bins));
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    }; /* switch */

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    /* Slow quant, dct and trellis not worthwhile for first pass
     * so make sure they are always turned off.
     */
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    if ( cpi->pass == 1 )
    {
        sf->improved_quant = 0;
        sf->optimize_coefficients = 0;
        sf->improved_dct = 0;
    }

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    if (cpi->sf.search_method == NSTEP)
    {
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        vp8_init3smotion_compensation(&cpi->mb, cm->yv12_fb[cm->lst_fb_idx].y_stride);
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    }
    else if (cpi->sf.search_method == DIAMOND)
    {
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        vp8_init_dsmotion_compensation(&cpi->mb, cm->yv12_fb[cm->lst_fb_idx].y_stride);
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    }

    if (cpi->sf.improved_dct)
    {
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        cpi->mb.short_fdct8x4 = vp8_short_fdct8x4;
        cpi->mb.short_fdct4x4 = vp8_short_fdct4x4;
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    }
    else
    {
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        /* No fast FDCT defined for any platform at this time. */
        cpi->mb.short_fdct8x4 = vp8_short_fdct8x4;
        cpi->mb.short_fdct4x4 = vp8_short_fdct4x4;
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    }

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    cpi->mb.short_walsh4x4 = vp8_short_walsh4x4;
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    if (cpi->sf.improved_quant)
    {
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        cpi->mb.quantize_b      = vp8_regular_quantize_b;
        cpi->mb.quantize_b_pair = vp8_regular_quantize_b_pair;
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    }
    else
    {
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        cpi->mb.quantize_b      = vp8_fast_quantize_b;
        cpi->mb.quantize_b_pair = vp8_fast_quantize_b_pair;
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    }
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    if (cpi->sf.improved_quant != last_improved_quant)
        vp8cx_init_quantizer(cpi);
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    if (cpi->sf.iterative_sub_pixel == 1)
    {
        cpi->find_fractional_mv_step = vp8_find_best_sub_pixel_step_iteratively;
    }
    else if (cpi->sf.quarter_pixel_search)
    {
        cpi->find_fractional_mv_step = vp8_find_best_sub_pixel_step;
    }
    else if (cpi->sf.half_pixel_search)
    {
        cpi->find_fractional_mv_step = vp8_find_best_half_pixel_step;
    }
    else
    {
        cpi->find_fractional_mv_step = vp8_skip_fractional_mv_step;
    }

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    if (cpi->sf.optimize_coefficients == 1 && cpi->pass!=1)
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        cpi->mb.optimize = 1;
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    else
        cpi->mb.optimize = 0;

    if (cpi->common.full_pixel)
        cpi->find_fractional_mv_step = vp8_skip_fractional_mv_step;

#ifdef SPEEDSTATS
    frames_at_speed[cpi->Speed]++;
#endif
}
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#undef GOOD
#undef RT

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static void alloc_raw_frame_buffers(VP8_COMP *cpi)
{
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#if VP8_TEMPORAL_ALT_REF
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    int width = (cpi->oxcf.Width + 15) & ~15;
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    int height = (cpi->oxcf.Height + 15) & ~15;
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#endif
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    cpi->lookahead = vp8_lookahead_init(cpi->oxcf.Width, cpi->oxcf.Height,
                                        cpi->oxcf.lag_in_frames);
    if(!cpi->lookahead)
        vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                           "Failed to allocate lag buffers");
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#if VP8_TEMPORAL_ALT_REF

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    if (vp8_yv12_alloc_frame_buffer(&cpi->alt_ref_buffer,
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                                    width, height, VP8BORDERINPIXELS))
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        vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                           "Failed to allocate altref buffer");

#endif
}
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static void dealloc_raw_frame_buffers(VP8_COMP *cpi)
{
#if VP8_TEMPORAL_ALT_REF
    vp8_yv12_de_alloc_frame_buffer(&cpi->alt_ref_buffer);
#endif
    vp8_lookahead_destroy(cpi->lookahead);
}


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static int vp8_alloc_partition_data(VP8_COMP *cpi)
{
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        vpx_free(cpi->mb.pip);

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    cpi->mb.pip = vpx_calloc((cpi->common.mb_cols + 1) *
                                (cpi->common.mb_rows + 1),
                                sizeof(PARTITION_INFO));
    if(!cpi->mb.pip)
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        return 1;
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