vp9_encoder.c 200 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 <math.h>
#include <stdio.h>
#include <limits.h>

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#include "./vp9_rtcd.h"
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#include "./vpx_config.h"
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#include "./vpx_dsp_rtcd.h"
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#include "./vpx_scale_rtcd.h"
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#include "vpx_dsp/psnr.h"
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#include "vpx_dsp/vpx_dsp_common.h"
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#include "vpx_dsp/vpx_filter.h"
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#if CONFIG_INTERNAL_STATS
#include "vpx_dsp/ssim.h"
#endif
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#include "vpx_ports/mem.h"
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#include "vpx_ports/system_state.h"
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#include "vpx_ports/vpx_timer.h"
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#include "vp9/common/vp9_alloccommon.h"
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#include "vp9/common/vp9_filter.h"
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#include "vp9/common/vp9_idct.h"
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#if CONFIG_VP9_POSTPROC
#include "vp9/common/vp9_postproc.h"
#endif
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#include "vp9/common/vp9_reconinter.h"
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#include "vp9/common/vp9_reconintra.h"
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#include "vp9/common/vp9_tile_common.h"
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#include "vp9/encoder/vp9_alt_ref_aq.h"
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#include "vp9/encoder/vp9_aq_360.h"
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#include "vp9/encoder/vp9_aq_complexity.h"
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#include "vp9/encoder/vp9_aq_cyclicrefresh.h"
#include "vp9/encoder/vp9_aq_variance.h"
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#include "vp9/encoder/vp9_bitstream.h"
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#include "vp9/encoder/vp9_context_tree.h"
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#include "vp9/encoder/vp9_encodeframe.h"
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#include "vp9/encoder/vp9_encodemv.h"
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#include "vp9/encoder/vp9_encoder.h"
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#include "vp9/encoder/vp9_extend.h"
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#include "vp9/encoder/vp9_ethread.h"
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#include "vp9/encoder/vp9_firstpass.h"
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#include "vp9/encoder/vp9_mbgraph.h"
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#include "vp9/encoder/vp9_multi_thread.h"
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#include "vp9/encoder/vp9_noise_estimate.h"
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#include "vp9/encoder/vp9_picklpf.h"
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#include "vp9/encoder/vp9_ratectrl.h"
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#include "vp9/encoder/vp9_rd.h"
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#include "vp9/encoder/vp9_resize.h"
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#include "vp9/encoder/vp9_segmentation.h"
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#include "vp9/encoder/vp9_skin_detection.h"
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#include "vp9/encoder/vp9_speed_features.h"
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#include "vp9/encoder/vp9_svc_layercontext.h"
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#include "vp9/encoder/vp9_temporal_filter.h"
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#define AM_SEGMENT_ID_INACTIVE 7
#define AM_SEGMENT_ID_ACTIVE 0
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#define ALTREF_HIGH_PRECISION_MV 1     // Whether to use high precision mv
                                       //  for altref computation.
#define HIGH_PRECISION_MV_QTHRESH 200  // Q threshold for high precision
                                       // mv. Choose a very high value for
                                       // now so that HIGH_PRECISION is always
                                       // chosen.
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#define FRAME_SIZE_FACTOR 128  // empirical params for context model threshold
#define FRAME_RATE_FACTOR 8

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#ifdef OUTPUT_YUV_DENOISED
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FILE *yuv_denoised_file = NULL;
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#endif
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#ifdef OUTPUT_YUV_SKINMAP
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static FILE *yuv_skinmap_file = NULL;
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#endif
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#ifdef OUTPUT_YUV_REC
FILE *yuv_rec_file;
#endif
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#if 0
FILE *framepsnr;
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FILE *kf_list;
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FILE *keyfile;
#endif

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#ifdef ENABLE_KF_DENOISE
// Test condition for spatial denoise of source.
static int is_spatial_denoise_enabled(VP9_COMP *cpi) {
  VP9_COMMON *const cm = &cpi->common;
  const VP9EncoderConfig *const oxcf = &cpi->oxcf;

  return (oxcf->pass != 1) && !is_lossless_requested(&cpi->oxcf) &&
         frame_is_intra_only(cm);
}
#endif

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// compute adaptive threshold for skip recoding
static int compute_context_model_thresh(const VP9_COMP *const cpi) {
  const VP9_COMMON *const cm = &cpi->common;
  const VP9EncoderConfig *const oxcf = &cpi->oxcf;
  const int frame_size = (cm->width * cm->height) >> 10;
  const int bitrate = (int)(oxcf->target_bandwidth >> 10);
  const int qindex_factor = cm->base_qindex + (MAXQ >> 1);

  // This equation makes the threshold adaptive to frame size.
  // Coding gain obtained by recoding comes from alternate frames of large
  // content change. We skip recoding if the difference of previous and current
  // frame context probability model is less than a certain threshold.
  // The first component is the most critical part to guarantee adaptivity.
  // Other parameters are estimated based on normal setting of hd resolution
  // parameters. e.g frame_size = 1920x1080, bitrate = 8000, qindex_factor < 50
  const int thresh =
      ((FRAME_SIZE_FACTOR * frame_size - FRAME_RATE_FACTOR * bitrate) *
       qindex_factor) >>
      9;

  return thresh;
}

// compute the total cost difference between current
// and previous frame context prob model.
static int compute_context_model_diff(const VP9_COMMON *const cm) {
  const FRAME_CONTEXT *const pre_fc =
      &cm->frame_contexts[cm->frame_context_idx];
  const FRAME_CONTEXT *const cur_fc = cm->fc;
  const FRAME_COUNTS *counts = &cm->counts;
  vpx_prob pre_last_prob, cur_last_prob;
  int diff = 0;
  int i, j, k, l, m, n;

  // y_mode_prob
  for (i = 0; i < BLOCK_SIZE_GROUPS; ++i) {
    for (j = 0; j < INTRA_MODES - 1; ++j) {
      diff += (int)counts->y_mode[i][j] *
              (pre_fc->y_mode_prob[i][j] - cur_fc->y_mode_prob[i][j]);
    }
    pre_last_prob = MAX_PROB - pre_fc->y_mode_prob[i][INTRA_MODES - 2];
    cur_last_prob = MAX_PROB - cur_fc->y_mode_prob[i][INTRA_MODES - 2];

    diff += (int)counts->y_mode[i][INTRA_MODES - 1] *
            (pre_last_prob - cur_last_prob);
  }

  // uv_mode_prob
  for (i = 0; i < INTRA_MODES; ++i) {
    for (j = 0; j < INTRA_MODES - 1; ++j) {
      diff += (int)counts->uv_mode[i][j] *
              (pre_fc->uv_mode_prob[i][j] - cur_fc->uv_mode_prob[i][j]);
    }
    pre_last_prob = MAX_PROB - pre_fc->uv_mode_prob[i][INTRA_MODES - 2];
    cur_last_prob = MAX_PROB - cur_fc->uv_mode_prob[i][INTRA_MODES - 2];

    diff += (int)counts->uv_mode[i][INTRA_MODES - 1] *
            (pre_last_prob - cur_last_prob);
  }

  // partition_prob
  for (i = 0; i < PARTITION_CONTEXTS; ++i) {
    for (j = 0; j < PARTITION_TYPES - 1; ++j) {
      diff += (int)counts->partition[i][j] *
              (pre_fc->partition_prob[i][j] - cur_fc->partition_prob[i][j]);
    }
    pre_last_prob = MAX_PROB - pre_fc->partition_prob[i][PARTITION_TYPES - 2];
    cur_last_prob = MAX_PROB - cur_fc->partition_prob[i][PARTITION_TYPES - 2];

    diff += (int)counts->partition[i][PARTITION_TYPES - 1] *
            (pre_last_prob - cur_last_prob);
  }

  // coef_probs
  for (i = 0; i < TX_SIZES; ++i) {
    for (j = 0; j < PLANE_TYPES; ++j) {
      for (k = 0; k < REF_TYPES; ++k) {
        for (l = 0; l < COEF_BANDS; ++l) {
          for (m = 0; m < BAND_COEFF_CONTEXTS(l); ++m) {
            for (n = 0; n < UNCONSTRAINED_NODES; ++n) {
              diff += (int)counts->coef[i][j][k][l][m][n] *
                      (pre_fc->coef_probs[i][j][k][l][m][n] -
                       cur_fc->coef_probs[i][j][k][l][m][n]);
            }

            pre_last_prob =
                MAX_PROB -
                pre_fc->coef_probs[i][j][k][l][m][UNCONSTRAINED_NODES - 1];
            cur_last_prob =
                MAX_PROB -
                cur_fc->coef_probs[i][j][k][l][m][UNCONSTRAINED_NODES - 1];

            diff += (int)counts->coef[i][j][k][l][m][UNCONSTRAINED_NODES] *
                    (pre_last_prob - cur_last_prob);
          }
        }
      }
    }
  }

  // switchable_interp_prob
  for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i) {
    for (j = 0; j < SWITCHABLE_FILTERS - 1; ++j) {
      diff += (int)counts->switchable_interp[i][j] *
              (pre_fc->switchable_interp_prob[i][j] -
               cur_fc->switchable_interp_prob[i][j]);
    }
    pre_last_prob =
        MAX_PROB - pre_fc->switchable_interp_prob[i][SWITCHABLE_FILTERS - 2];
    cur_last_prob =
        MAX_PROB - cur_fc->switchable_interp_prob[i][SWITCHABLE_FILTERS - 2];

    diff += (int)counts->switchable_interp[i][SWITCHABLE_FILTERS - 1] *
            (pre_last_prob - cur_last_prob);
  }

  // inter_mode_probs
  for (i = 0; i < INTER_MODE_CONTEXTS; ++i) {
    for (j = 0; j < INTER_MODES - 1; ++j) {
      diff += (int)counts->inter_mode[i][j] *
              (pre_fc->inter_mode_probs[i][j] - cur_fc->inter_mode_probs[i][j]);
    }
    pre_last_prob = MAX_PROB - pre_fc->inter_mode_probs[i][INTER_MODES - 2];
    cur_last_prob = MAX_PROB - cur_fc->inter_mode_probs[i][INTER_MODES - 2];

    diff += (int)counts->inter_mode[i][INTER_MODES - 1] *
            (pre_last_prob - cur_last_prob);
  }

  // intra_inter_prob
  for (i = 0; i < INTRA_INTER_CONTEXTS; ++i) {
    diff += (int)counts->intra_inter[i][0] *
            (pre_fc->intra_inter_prob[i] - cur_fc->intra_inter_prob[i]);

    pre_last_prob = MAX_PROB - pre_fc->intra_inter_prob[i];
    cur_last_prob = MAX_PROB - cur_fc->intra_inter_prob[i];

    diff += (int)counts->intra_inter[i][1] * (pre_last_prob - cur_last_prob);
  }

  // comp_inter_prob
  for (i = 0; i < COMP_INTER_CONTEXTS; ++i) {
    diff += (int)counts->comp_inter[i][0] *
            (pre_fc->comp_inter_prob[i] - cur_fc->comp_inter_prob[i]);

    pre_last_prob = MAX_PROB - pre_fc->comp_inter_prob[i];
    cur_last_prob = MAX_PROB - cur_fc->comp_inter_prob[i];

    diff += (int)counts->comp_inter[i][1] * (pre_last_prob - cur_last_prob);
  }

  // single_ref_prob
  for (i = 0; i < REF_CONTEXTS; ++i) {
    for (j = 0; j < 2; ++j) {
      diff += (int)counts->single_ref[i][j][0] *
              (pre_fc->single_ref_prob[i][j] - cur_fc->single_ref_prob[i][j]);

      pre_last_prob = MAX_PROB - pre_fc->single_ref_prob[i][j];
      cur_last_prob = MAX_PROB - cur_fc->single_ref_prob[i][j];

      diff +=
          (int)counts->single_ref[i][j][1] * (pre_last_prob - cur_last_prob);
    }
  }

  // comp_ref_prob
  for (i = 0; i < REF_CONTEXTS; ++i) {
    diff += (int)counts->comp_ref[i][0] *
            (pre_fc->comp_ref_prob[i] - cur_fc->comp_ref_prob[i]);

    pre_last_prob = MAX_PROB - pre_fc->comp_ref_prob[i];
    cur_last_prob = MAX_PROB - cur_fc->comp_ref_prob[i];

    diff += (int)counts->comp_ref[i][1] * (pre_last_prob - cur_last_prob);
  }

  // tx_probs
  for (i = 0; i < TX_SIZE_CONTEXTS; ++i) {
    // p32x32
    for (j = 0; j < TX_SIZES - 1; ++j) {
      diff += (int)counts->tx.p32x32[i][j] *
              (pre_fc->tx_probs.p32x32[i][j] - cur_fc->tx_probs.p32x32[i][j]);
    }
    pre_last_prob = MAX_PROB - pre_fc->tx_probs.p32x32[i][TX_SIZES - 2];
    cur_last_prob = MAX_PROB - cur_fc->tx_probs.p32x32[i][TX_SIZES - 2];

    diff += (int)counts->tx.p32x32[i][TX_SIZES - 1] *
            (pre_last_prob - cur_last_prob);

    // p16x16
    for (j = 0; j < TX_SIZES - 2; ++j) {
      diff += (int)counts->tx.p16x16[i][j] *
              (pre_fc->tx_probs.p16x16[i][j] - cur_fc->tx_probs.p16x16[i][j]);
    }
    pre_last_prob = MAX_PROB - pre_fc->tx_probs.p16x16[i][TX_SIZES - 3];
    cur_last_prob = MAX_PROB - cur_fc->tx_probs.p16x16[i][TX_SIZES - 3];

    diff += (int)counts->tx.p16x16[i][TX_SIZES - 2] *
            (pre_last_prob - cur_last_prob);

    // p8x8
    for (j = 0; j < TX_SIZES - 3; ++j) {
      diff += (int)counts->tx.p8x8[i][j] *
              (pre_fc->tx_probs.p8x8[i][j] - cur_fc->tx_probs.p8x8[i][j]);
    }
    pre_last_prob = MAX_PROB - pre_fc->tx_probs.p8x8[i][TX_SIZES - 4];
    cur_last_prob = MAX_PROB - cur_fc->tx_probs.p8x8[i][TX_SIZES - 4];

    diff +=
        (int)counts->tx.p8x8[i][TX_SIZES - 3] * (pre_last_prob - cur_last_prob);
  }

  // skip_probs
  for (i = 0; i < SKIP_CONTEXTS; ++i) {
    diff += (int)counts->skip[i][0] *
            (pre_fc->skip_probs[i] - cur_fc->skip_probs[i]);

    pre_last_prob = MAX_PROB - pre_fc->skip_probs[i];
    cur_last_prob = MAX_PROB - cur_fc->skip_probs[i];

    diff += (int)counts->skip[i][1] * (pre_last_prob - cur_last_prob);
  }

  // mv
  for (i = 0; i < MV_JOINTS - 1; ++i) {
    diff += (int)counts->mv.joints[i] *
            (pre_fc->nmvc.joints[i] - cur_fc->nmvc.joints[i]);
  }
  pre_last_prob = MAX_PROB - pre_fc->nmvc.joints[MV_JOINTS - 2];
  cur_last_prob = MAX_PROB - cur_fc->nmvc.joints[MV_JOINTS - 2];

  diff +=
      (int)counts->mv.joints[MV_JOINTS - 1] * (pre_last_prob - cur_last_prob);

  for (i = 0; i < 2; ++i) {
    const nmv_component_counts *nmv_count = &counts->mv.comps[i];
    const nmv_component *pre_nmv_prob = &pre_fc->nmvc.comps[i];
    const nmv_component *cur_nmv_prob = &cur_fc->nmvc.comps[i];

    // sign
    diff += (int)nmv_count->sign[0] * (pre_nmv_prob->sign - cur_nmv_prob->sign);

    pre_last_prob = MAX_PROB - pre_nmv_prob->sign;
    cur_last_prob = MAX_PROB - cur_nmv_prob->sign;

    diff += (int)nmv_count->sign[1] * (pre_last_prob - cur_last_prob);

    // classes
    for (j = 0; j < MV_CLASSES - 1; ++j) {
      diff += (int)nmv_count->classes[j] *
              (pre_nmv_prob->classes[j] - cur_nmv_prob->classes[j]);
    }
    pre_last_prob = MAX_PROB - pre_nmv_prob->classes[MV_CLASSES - 2];
    cur_last_prob = MAX_PROB - cur_nmv_prob->classes[MV_CLASSES - 2];

    diff += (int)nmv_count->classes[MV_CLASSES - 1] *
            (pre_last_prob - cur_last_prob);

    // class0
    for (j = 0; j < CLASS0_SIZE - 1; ++j) {
      diff += (int)nmv_count->class0[j] *
              (pre_nmv_prob->class0[j] - cur_nmv_prob->class0[j]);
    }
    pre_last_prob = MAX_PROB - pre_nmv_prob->class0[CLASS0_SIZE - 2];
    cur_last_prob = MAX_PROB - cur_nmv_prob->class0[CLASS0_SIZE - 2];

    diff += (int)nmv_count->class0[CLASS0_SIZE - 1] *
            (pre_last_prob - cur_last_prob);

    // bits
    for (j = 0; j < MV_OFFSET_BITS; ++j) {
      diff += (int)nmv_count->bits[j][0] *
              (pre_nmv_prob->bits[j] - cur_nmv_prob->bits[j]);

      pre_last_prob = MAX_PROB - pre_nmv_prob->bits[j];
      cur_last_prob = MAX_PROB - cur_nmv_prob->bits[j];

      diff += (int)nmv_count->bits[j][1] * (pre_last_prob - cur_last_prob);
    }

    // class0_fp
    for (j = 0; j < CLASS0_SIZE; ++j) {
      for (k = 0; k < MV_FP_SIZE - 1; ++k) {
        diff += (int)nmv_count->class0_fp[j][k] *
                (pre_nmv_prob->class0_fp[j][k] - cur_nmv_prob->class0_fp[j][k]);
      }
      pre_last_prob = MAX_PROB - pre_nmv_prob->class0_fp[j][MV_FP_SIZE - 2];
      cur_last_prob = MAX_PROB - cur_nmv_prob->class0_fp[j][MV_FP_SIZE - 2];

      diff += (int)nmv_count->class0_fp[j][MV_FP_SIZE - 1] *
              (pre_last_prob - cur_last_prob);
    }

    // fp
    for (j = 0; j < MV_FP_SIZE - 1; ++j) {
      diff +=
          (int)nmv_count->fp[j] * (pre_nmv_prob->fp[j] - cur_nmv_prob->fp[j]);
    }
    pre_last_prob = MAX_PROB - pre_nmv_prob->fp[MV_FP_SIZE - 2];
    cur_last_prob = MAX_PROB - cur_nmv_prob->fp[MV_FP_SIZE - 2];

    diff +=
        (int)nmv_count->fp[MV_FP_SIZE - 1] * (pre_last_prob - cur_last_prob);

    // class0_hp
    diff += (int)nmv_count->class0_hp[0] *
            (pre_nmv_prob->class0_hp - cur_nmv_prob->class0_hp);

    pre_last_prob = MAX_PROB - pre_nmv_prob->class0_hp;
    cur_last_prob = MAX_PROB - cur_nmv_prob->class0_hp;

    diff += (int)nmv_count->class0_hp[1] * (pre_last_prob - cur_last_prob);

    // hp
    diff += (int)nmv_count->hp[0] * (pre_nmv_prob->hp - cur_nmv_prob->hp);

    pre_last_prob = MAX_PROB - pre_nmv_prob->hp;
    cur_last_prob = MAX_PROB - cur_nmv_prob->hp;

    diff += (int)nmv_count->hp[1] * (pre_last_prob - cur_last_prob);
  }

  return -diff;
}

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// Test for whether to calculate metrics for the frame.
static int is_psnr_calc_enabled(VP9_COMP *cpi) {
  VP9_COMMON *const cm = &cpi->common;
  const VP9EncoderConfig *const oxcf = &cpi->oxcf;

  return cpi->b_calculate_psnr && (oxcf->pass != 1) && cm->show_frame;
}

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/* clang-format off */
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const Vp9LevelSpec vp9_level_defs[VP9_LEVELS] = {
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  { LEVEL_1,   829440,      36864,    200,    400,    2, 1,  4,  8 },
  { LEVEL_1_1, 2764800,     73728,    800,    1000,   2, 1,  4,  8 },
  { LEVEL_2,   4608000,     122880,   1800,   1500,   2, 1,  4,  8 },
  { LEVEL_2_1, 9216000,     245760,   3600,   2800,   2, 2,  4,  8 },
  { LEVEL_3,   20736000,    552960,   7200,   6000,   2, 4,  4,  8 },
  { LEVEL_3_1, 36864000,    983040,   12000,  10000,  2, 4,  4,  8 },
  { LEVEL_4,   83558400,    2228224,  18000,  16000,  4, 4,  4,  8 },
  { LEVEL_4_1, 160432128,   2228224,  30000,  18000,  4, 4,  5,  6 },
  { LEVEL_5,   311951360,   8912896,  60000,  36000,  6, 8,  6,  4 },
  { LEVEL_5_1, 588251136,   8912896,  120000, 46000,  8, 8,  10, 4 },
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  // TODO(huisu): update max_cpb_size for level 5_2 ~ 6_2 when
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  // they are finalized (currently tentative).
  { LEVEL_5_2, 1176502272,  8912896,  180000, 90000,  8, 8,  10, 4 },
  { LEVEL_6,   1176502272,  35651584, 180000, 90000,  8, 16, 10, 4 },
  { LEVEL_6_1, 2353004544u, 35651584, 240000, 180000, 8, 16, 10, 4 },
  { LEVEL_6_2, 4706009088u, 35651584, 480000, 360000, 8, 16, 10, 4 },
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};
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/* clang-format on */
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static const char *level_fail_messages[TARGET_LEVEL_FAIL_IDS] =
    { "The average bit-rate is too high.",
      "The picture size is too large.",
      "The luma sample rate is too large.",
      "The CPB size is too large.",
      "The compression ratio is too small",
      "Too many column tiles are used.",
      "The alt-ref distance is too small.",
      "Too many reference buffers are used." };

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static INLINE void Scale2Ratio(VPX_SCALING mode, int *hr, int *hs) {
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  switch (mode) {
    case NORMAL:
      *hr = 1;
      *hs = 1;
      break;
    case FOURFIVE:
      *hr = 4;
      *hs = 5;
      break;
    case THREEFIVE:
      *hr = 3;
      *hs = 5;
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      break;
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    case ONETWO:
      *hr = 1;
      *hs = 2;
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      break;
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    default:
      *hr = 1;
      *hs = 1;
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      assert(0);
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      break;
  }
}

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// Mark all inactive blocks as active. Other segmentation features may be set
// so memset cannot be used, instead only inactive blocks should be reset.
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static void suppress_active_map(VP9_COMP *cpi) {
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  unsigned char *const seg_map = cpi->segmentation_map;
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  if (cpi->active_map.enabled || cpi->active_map.update) {
    const int rows = cpi->common.mi_rows;
    const int cols = cpi->common.mi_cols;
    int i;

    for (i = 0; i < rows * cols; ++i)
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      if (seg_map[i] == AM_SEGMENT_ID_INACTIVE)
        seg_map[i] = AM_SEGMENT_ID_ACTIVE;
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  }
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}

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static void apply_active_map(VP9_COMP *cpi) {
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  struct segmentation *const seg = &cpi->common.seg;
  unsigned char *const seg_map = cpi->segmentation_map;
  const unsigned char *const active_map = cpi->active_map.map;
  int i;

  assert(AM_SEGMENT_ID_ACTIVE == CR_SEGMENT_ID_BASE);

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  if (frame_is_intra_only(&cpi->common)) {
    cpi->active_map.enabled = 0;
    cpi->active_map.update = 1;
  }

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  if (cpi->active_map.update) {
    if (cpi->active_map.enabled) {
      for (i = 0; i < cpi->common.mi_rows * cpi->common.mi_cols; ++i)
        if (seg_map[i] == AM_SEGMENT_ID_ACTIVE) seg_map[i] = active_map[i];
      vp9_enable_segmentation(seg);
      vp9_enable_segfeature(seg, AM_SEGMENT_ID_INACTIVE, SEG_LVL_SKIP);
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      vp9_enable_segfeature(seg, AM_SEGMENT_ID_INACTIVE, SEG_LVL_ALT_LF);
      // Setting the data to -MAX_LOOP_FILTER will result in the computed loop
      // filter level being zero regardless of the value of seg->abs_delta.
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      vp9_set_segdata(seg, AM_SEGMENT_ID_INACTIVE, SEG_LVL_ALT_LF,
                      -MAX_LOOP_FILTER);
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    } else {
      vp9_disable_segfeature(seg, AM_SEGMENT_ID_INACTIVE, SEG_LVL_SKIP);
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      vp9_disable_segfeature(seg, AM_SEGMENT_ID_INACTIVE, SEG_LVL_ALT_LF);
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      if (seg->enabled) {
        seg->update_data = 1;
        seg->update_map = 1;
      }
    }
    cpi->active_map.update = 0;
  }
}

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static void init_level_info(Vp9LevelInfo *level_info) {
  Vp9LevelStats *const level_stats = &level_info->level_stats;
  Vp9LevelSpec *const level_spec = &level_info->level_spec;

  memset(level_stats, 0, sizeof(*level_stats));
  memset(level_spec, 0, sizeof(*level_spec));
  level_spec->level = LEVEL_UNKNOWN;
  level_spec->min_altref_distance = INT_MAX;
}

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VP9_LEVEL vp9_get_level(const Vp9LevelSpec *const level_spec) {
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  int i;
  const Vp9LevelSpec *this_level;

  vpx_clear_system_state();

  for (i = 0; i < VP9_LEVELS; ++i) {
    this_level = &vp9_level_defs[i];
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    if ((double)level_spec->max_luma_sample_rate >
            (double)this_level->max_luma_sample_rate *
                (1 + SAMPLE_RATE_GRACE_P) ||
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        level_spec->max_luma_picture_size > this_level->max_luma_picture_size ||
        level_spec->average_bitrate > this_level->average_bitrate ||
        level_spec->max_cpb_size > this_level->max_cpb_size ||
        level_spec->compression_ratio < this_level->compression_ratio ||
        level_spec->max_col_tiles > this_level->max_col_tiles ||
        level_spec->min_altref_distance < this_level->min_altref_distance ||
        level_spec->max_ref_frame_buffers > this_level->max_ref_frame_buffers)
      continue;
    break;
  }
  return (i == VP9_LEVELS) ? LEVEL_UNKNOWN : vp9_level_defs[i].level;
}

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int vp9_set_active_map(VP9_COMP *cpi, unsigned char *new_map_16x16, int rows,
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                       int cols) {
  if (rows == cpi->common.mb_rows && cols == cpi->common.mb_cols) {
    unsigned char *const active_map_8x8 = cpi->active_map.map;
    const int mi_rows = cpi->common.mi_rows;
    const int mi_cols = cpi->common.mi_cols;
    cpi->active_map.update = 1;
    if (new_map_16x16) {
      int r, c;
      for (r = 0; r < mi_rows; ++r) {
        for (c = 0; c < mi_cols; ++c) {
          active_map_8x8[r * mi_cols + c] =
              new_map_16x16[(r >> 1) * cols + (c >> 1)]
                  ? AM_SEGMENT_ID_ACTIVE
                  : AM_SEGMENT_ID_INACTIVE;
        }
      }
      cpi->active_map.enabled = 1;
    } else {
      cpi->active_map.enabled = 0;
    }
    return 0;
  } else {
    return -1;
  }
}

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int vp9_get_active_map(VP9_COMP *cpi, unsigned char *new_map_16x16, int rows,
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                       int cols) {
  if (rows == cpi->common.mb_rows && cols == cpi->common.mb_cols &&
      new_map_16x16) {
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    unsigned char *const seg_map_8x8 = cpi->segmentation_map;
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    const int mi_rows = cpi->common.mi_rows;
    const int mi_cols = cpi->common.mi_cols;
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    memset(new_map_16x16, !cpi->active_map.enabled, rows * cols);
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    if (cpi->active_map.enabled) {
      int r, c;
      for (r = 0; r < mi_rows; ++r) {
        for (c = 0; c < mi_cols; ++c) {
          // Cyclic refresh segments are considered active despite not having
          // AM_SEGMENT_ID_ACTIVE
          new_map_16x16[(r >> 1) * cols + (c >> 1)] |=
              seg_map_8x8[r * mi_cols + c] != AM_SEGMENT_ID_INACTIVE;
        }
      }
    }
    return 0;
  } else {
    return -1;
  }
}

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void vp9_set_high_precision_mv(VP9_COMP *cpi, int allow_high_precision_mv) {
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  MACROBLOCK *const mb = &cpi->td.mb;
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  cpi->common.allow_high_precision_mv = allow_high_precision_mv;
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  if (cpi->common.allow_high_precision_mv) {
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    mb->mvcost = mb->nmvcost_hp;
    mb->mvsadcost = mb->nmvsadcost_hp;
  } else {
    mb->mvcost = mb->nmvcost;
    mb->mvsadcost = mb->nmvsadcost;
  }
}
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static void setup_frame(VP9_COMP *cpi) {
  VP9_COMMON *const cm = &cpi->common;
  // Set up entropy context depending on frame type. The decoder mandates
  // the use of the default context, index 0, for keyframes and inter
  // frames where the error_resilient_mode or intra_only flag is set. For
  // other inter-frames the encoder currently uses only two contexts;
  // context 1 for ALTREF frames and context 0 for the others.
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  if (frame_is_intra_only(cm) || cm->error_resilient_mode) {
    vp9_setup_past_independence(cm);
  } else {
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    if (!cpi->use_svc) cm->frame_context_idx = cpi->refresh_alt_ref_frame;
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  }

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  if (cm->frame_type == KEY_FRAME) {
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    if (!is_two_pass_svc(cpi)) cpi->refresh_golden_frame = 1;
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    cpi->refresh_alt_ref_frame = 1;
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    vp9_zero(cpi->interp_filter_selected);
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  } else {
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    *cm->fc = cm->frame_contexts[cm->frame_context_idx];
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    vp9_zero(cpi->interp_filter_selected[0]);
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  }
}

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static void vp9_enc_setup_mi(VP9_COMMON *cm) {
  int i;
  cm->mi = cm->mip + cm->mi_stride + 1;
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  memset(cm->mip, 0, cm->mi_stride * (cm->mi_rows + 1) * sizeof(*cm->mip));
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  cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
  // Clear top border row
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  memset(cm->prev_mip, 0, sizeof(*cm->prev_mip) * cm->mi_stride);
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  // Clear left border column
  for (i = 1; i < cm->mi_rows + 1; ++i)
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    memset(&cm->prev_mip[i * cm->mi_stride], 0, sizeof(*cm->prev_mip));
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  cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1;
  cm->prev_mi_grid_visible = cm->prev_mi_grid_base + cm->mi_stride + 1;

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  memset(cm->mi_grid_base, 0,
         cm->mi_stride * (cm->mi_rows + 1) * sizeof(*cm->mi_grid_base));
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}

static int vp9_enc_alloc_mi(VP9_COMMON *cm, int mi_size) {
  cm->mip = vpx_calloc(mi_size, sizeof(*cm->mip));
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  if (!cm->mip) return 1;
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  cm->prev_mip = vpx_calloc(mi_size, sizeof(*cm->prev_mip));
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  if (!cm->prev_mip) return 1;
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  cm->mi_alloc_size = mi_size;
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  cm->mi_grid_base = (MODE_INFO **)vpx_calloc(mi_size, sizeof(MODE_INFO *));
  if (!cm->mi_grid_base) return 1;
  cm->prev_mi_grid_base =
      (MODE_INFO **)vpx_calloc(mi_size, sizeof(MODE_INFO *));
  if (!cm->prev_mi_grid_base) return 1;
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  return 0;
}

static void vp9_enc_free_mi(VP9_COMMON *cm) {
  vpx_free(cm->mip);
  cm->mip = NULL;
  vpx_free(cm->prev_mip);
  cm->prev_mip = NULL;
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  vpx_free(cm->mi_grid_base);
  cm->mi_grid_base = NULL;
  vpx_free(cm->prev_mi_grid_base);
  cm->prev_mi_grid_base = NULL;
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}

static void vp9_swap_mi_and_prev_mi(VP9_COMMON *cm) {
  // Current mip will be the prev_mip for the next frame.
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  MODE_INFO **temp_base = cm->prev_mi_grid_base;
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  MODE_INFO *temp = cm->prev_mip;
  cm->prev_mip = cm->mip;
  cm->mip = temp;

  // Update the upper left visible macroblock ptrs.
  cm->mi = cm->mip + cm->mi_stride + 1;
  cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
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  cm->prev_mi_grid_base = cm->mi_grid_base;
  cm->mi_grid_base = temp_base;
  cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1;
  cm->prev_mi_grid_visible = cm->prev_mi_grid_base + cm->mi_stride + 1;
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}

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void vp9_initialize_enc(void) {
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  static volatile int init_done = 0;
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  if (!init_done) {
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    vp9_rtcd();
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    vpx_dsp_rtcd();
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    vpx_scale_rtcd();
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    vp9_init_intra_predictors();
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    vp9_init_me_luts();
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    vp9_rc_init_minq_luts();
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    vp9_entropy_mv_init();
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#if !CONFIG_REALTIME_ONLY
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    vp9_temporal_filter_init();
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#endif
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    init_done = 1;
  }
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}

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static void dealloc_compressor_data(VP9_COMP *cpi) {
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  VP9_COMMON *const cm = &cpi->common;
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  int i;
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  vpx_free(cpi->mbmi_ext_base);
  cpi->mbmi_ext_base = NULL;

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  vpx_free(cpi->tile_data);
  cpi->tile_data = NULL;
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  vpx_free(cpi->segmentation_map);
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  cpi->segmentation_map = NULL;
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  vpx_free(cpi->coding_context.last_frame_seg_map_copy);
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  cpi->coding_context.last_frame_seg_map_copy = NULL;
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  vpx_free(cpi->nmvcosts[0]);
  vpx_free(cpi->nmvcosts[1]);
  cpi->nmvcosts[0] = NULL;
  cpi->nmvcosts[1] = NULL;

  vpx_free(cpi->nmvcosts_hp[0]);
  vpx_free(cpi->nmvcosts_hp[1]);
  cpi->nmvcosts_hp[0] = NULL;
  cpi->nmvcosts_hp[1] = NULL;

  vpx_free(cpi->nmvsadcosts[0]);
  vpx_free(cpi->nmvsadcosts[1]);
  cpi->nmvsadcosts[0] = NULL;
  cpi->nmvsadcosts[1] = NULL;

  vpx_free(cpi->nmvsadcosts_hp[0]);
  vpx_free(cpi->nmvsadcosts_hp[1]);
  cpi->nmvsadcosts_hp[0] = NULL;
  cpi->nmvsadcosts_hp[1] = NULL;

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  vpx_free(cpi->skin_map);
  cpi->skin_map = NULL;

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  vpx_free(cpi->prev_partition);
  cpi->prev_partition = NULL;

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  vpx_free(cpi->svc.prev_partition_svc);
  cpi->svc.prev_partition_svc = NULL;

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  vpx_free(cpi->prev_segment_id);
  cpi->prev_segment_id = NULL;

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  vpx_free(cpi->prev_variance_low);
  cpi->prev_variance_low = NULL;

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  vpx_free(cpi->copied_frame_cnt);
  cpi->copied_frame_cnt = NULL;

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  vpx_free(cpi->content_state_sb_fd);
  cpi->content_state_sb_fd = NULL;

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  vpx_free(cpi->count_arf_frame_usage);
  cpi->count_arf_frame_usage = NULL;
  vpx_free(cpi->count_lastgolden_frame_usage);
  cpi->count_lastgolden_frame_usage = NULL;

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  vp9_cyclic_refresh_free(cpi->cyclic_refresh);
  cpi->cyclic_refresh = NULL;

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  vpx_free(cpi->active_map.map);
  cpi->active_map.map = NULL;

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  vpx_free(cpi->consec_zero_mv);
  cpi->consec_zero_mv = NULL;

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  vp9_free_ref_frame_buffers(cm->buffer_pool);
#if CONFIG_VP9_POSTPROC
  vp9_free_postproc_buffers(cm);
#endif
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  vp9_free_context_buffers(cm);
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  vpx_free_frame_buffer(&cpi->last_frame_uf);
  vpx_free_frame_buffer(&cpi->scaled_source);
  vpx_free_frame_buffer(&cpi->scaled_last_source);
  vpx_free_frame_buffer(&cpi->alt_ref_buffer);
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#ifdef ENABLE_KF_DENOISE
  vpx_free_frame_buffer(&cpi->raw_unscaled_source);
  vpx_free_frame_buffer(&cpi->raw_scaled_source);
#endif

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  vp9_lookahead_destroy(cpi->lookahead);
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  vpx_free(cpi->tile_tok[0][0]);
  cpi->tile_tok[0][0] = 0;
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  vpx_free(cpi->tplist[0][0]);
  cpi->tplist[0][0] = NULL;

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  vp9_free_pc_tree(&cpi->td);
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  for (i = 0; i < cpi->svc.number_spatial_layers; ++i) {
    LAYER_CONTEXT *const lc = &cpi->svc.layer_context[i];
    vpx_free(lc->rc_twopass_stats_in.buf);
    lc->rc_twopass_stats_in.buf = NULL;
    lc->rc_twopass_stats_in.sz = 0;
  }
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  if (cpi->source_diff_var != NULL) {
    vpx_free(cpi->source_diff_var);
    cpi->source_diff_var = NULL;
  }
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  for (i = 0; i < MAX_LAG_BUFFERS; ++i) {
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    vpx_free_frame_buffer(&cpi->svc.scaled_frames[i]);
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  }
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  memset(&cpi->svc.scaled_frames[0], 0,
         MAX_LAG_BUFFERS * sizeof(cpi->svc.scaled_frames[0]));
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  vpx_free_frame_buffer(&cpi->svc.scaled_temp);
  memset(&cpi->svc.scaled_temp, 0, sizeof(cpi->svc.scaled_temp));

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  vpx_free_frame_buffer(&cpi->svc.empty_frame.img);
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  memset(&cpi->svc.empty_frame, 0, sizeof(cpi->svc.empty_frame));
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  vp9_free_svc_cyclic_refresh(cpi);
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}

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static void save_coding_context(VP9_COMP *cpi) {
  CODING_CONTEXT *const cc = &cpi->coding_context;
  VP9_COMMON *cm = &cpi->common;

  // Stores a snapshot of key state variables which can subsequently be
  // restored with a call to vp9_restore_coding_context. These functions are
  // intended for use in a re-code loop in vp9_compress_frame where the
  // quantizer value is adjusted between loop iterations.
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  vp9_copy(cc->nmvjointcost, cpi->td.mb.nmvjointcost);
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  memcpy(cc->nmvcosts[0], cpi->nmvcosts[0],
         MV_VALS * sizeof(*cpi->nmvcosts[0]));
  memcpy(cc->nmvcosts[1], cpi->nmvcosts[1],
         MV_VALS * sizeof(*cpi->nmvcosts[1]));
  memcpy(cc->nmvcosts_hp[0], cpi->nmvcosts_hp[0],
         MV_VALS * sizeof(*cpi->nmvcosts_hp[0]));
  memcpy(cc->nmvcosts_hp[1], cpi->nmvcosts_hp[1],
         MV_VALS * sizeof(*cpi->nmvcosts_hp[1]));
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  vp9_copy(cc->segment_pred_probs, cm->seg.pred_probs);

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  memcpy(cpi->coding_context.last_frame_seg_map_copy, cm->last_frame_seg_map,
         (cm->mi_rows * cm->mi_cols));
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  vp9_copy(cc->last_ref_lf_deltas, cm->lf.last_ref_deltas);
  vp9_copy(cc->last_mode_lf_deltas, cm->lf.last_mode_deltas);

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  cc->fc = *cm->fc;
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}

static void restore_coding_context(VP9_COMP *cpi) {
  CODING_CONTEXT *const cc = &cpi->coding_context;
  VP9_COMMON *cm = &cpi->common;

  // Restore key state variables to the snapshot state stored in the
  // previous call to vp9_save_coding_context.
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  vp9_copy(cpi->td.mb.nmvjointcost, cc->nmvjointcost);
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  memcpy(cpi->nmvcosts[0], cc->nmvcosts[0], MV_VALS * sizeof(*cc->nmvcosts[0]));
  memcpy(cpi->nmvcosts[1], cc->nmvcosts[1], MV_VALS * sizeof(*cc->nmvcosts[1]));
  memcpy(cpi->nmvcosts_hp[0], cc->nmvcosts_hp[0],
         MV_VALS * sizeof(*cc->nmvcosts_hp[0]));
  memcpy(cpi->nmvcosts_hp[1], cc->nmvcosts_hp[1],
         MV_VALS * sizeof(*cc->nmvcosts_hp[1]));
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  vp9_copy(cm->seg.pred_probs, cc->segment_pred_probs);

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  memcpy(cm->last_frame_seg_map, cpi->coding_context.last_frame_seg_map_copy,
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         (cm->mi_rows * cm->mi_cols));
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  vp9_copy(cm->lf.last_ref_deltas, cc->last_ref_lf_deltas);
  vp9_copy(cm->lf.last_mode_deltas, cc->last_mode_lf_deltas);

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  *cm->fc = cc->fc;
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}

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#if !CONFIG_REALTIME_ONLY
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static void configure_static_seg_features(VP9_COMP *cpi) {
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  VP9_COMMON *const cm = &cpi->common;
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  const RATE_CONTROL *const rc = &cpi->rc;
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  struct segmentation *const seg = &cm->seg;
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  int high_q = (int)(rc->avg_q > 48.0);
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  int qi_delta;
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  // Disable and clear down for KF
  if (cm->frame_type == KEY_FRAME) {
    // Clear down the global segmentation map
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    memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols);
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    seg->update_map = 0;
    seg->update_data = 0;
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    cpi->static_mb_pct = 0;
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    // Disable segmentation
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    vp9_disable_segmentation(seg);
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    // Clear down the segment features.
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    vp9_clearall_segfeatures(seg);
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  } else if (cpi->refresh_alt_ref_frame) {
    // If this is an alt ref frame
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    // Clear down the global segmentation map
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    memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols);
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    seg->update_map = 0;
    seg->update_data = 0;
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    cpi->static_mb_pct = 0;
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955

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    // Disable segmentation and individual segment features by default
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    vp9_disable_segmentation(seg);
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    vp9_clearall_segfeatures(seg);
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    // Scan frames from current to arf frame.
    // This function re-enables segmentation if appropriate.
962
    vp9_update_mbgraph_stats(cpi);
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    // If segmentation was enabled set those features needed for the
    // arf itself.
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    if (seg->enabled) {
      seg->update_map = 1;
      seg->update_data = 1;
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      qi_delta =
          vp9_compute_qdelta(rc, rc->avg_q, rc->avg_q * 0.875, cm->bit_depth);
972
      vp9_set_segdata(seg, 1, SEG_LVL_ALT_Q, qi_delta - 2);
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      vp9_set_segdata(seg, 1, SEG_LVL_ALT_LF, -2);
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      vp9_enable_segfeature(seg, 1, SEG_LVL_ALT_Q);
      vp9_enable_segfeature(seg, 1, SEG_LVL_ALT_LF);
977

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      // Where relevant assume segment data is delta data
979
      seg->abs_delta = SEGMENT_DELTADATA;
980
    }
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  } else if (seg->enabled) {
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    // All other frames if segmentation has been enabled

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    // First normal frame in a valid gf or alt ref group
985
    if (rc->frames_since_golden == 0) {
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      // Set up segment features for normal frames in an arf group
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      if (rc->source_alt_ref_active) {
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        seg->update_map = 0;
        seg->update_data = 1;
        seg->abs_delta = SEGMENT_DELTADATA;
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        qi_delta =
            vp9_compute_qdelta(rc, rc->avg_q, rc->avg_q * 1.125, cm->bit_depth);
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        vp9_set_segdata(seg, 1, SEG_LVL_ALT_Q, qi_delta + 2);
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        vp9_enable_segfeature(seg, 1, SEG_LVL_ALT_Q);
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        vp9_set_segdata(seg, 1, SEG_LVL_ALT_LF, -2);
        vp9_enable_segfeature(seg, 1, SEG_LVL_ALT_LF);
999

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        // Segment coding disabled for compred testing
        if (high_q || (cpi->static_mb_pct == 100)) {
1002 1003 1004
          vp9_set_segdata(seg, 1, SEG_LVL_REF_FRAME, ALTREF_FRAME);
          vp9_enable_segfeature(seg, 1, SEG_LVL_REF_FRAME);
          vp9_enable_segfeature(seg, 1, SEG_LVL_SKIP);
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        }
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      } else {
        // Disable segmentation and clear down features if alt ref
        // is not active for this group

1010
        vp9_disable_segmentation(seg);
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        memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols);
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        seg->update_map = 0;
        seg->update_data = 0;
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        vp9_clearall_segfeatures(seg);
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      }
1019
    } else if (rc->is_src_frame_alt_ref) {
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      // Special case where we are coding over the top of a previous
      // alt ref frame.
      // Segment coding disabled for compred testing
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      // Enable ref frame features for segment 0 as well
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      vp9_enable_segfeature(seg, 0, SEG_LVL_REF_FRAME);
      vp9_enable_segfeature(seg, 1, SEG_LVL_REF_FRAME);
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      // All mbs should use ALTREF_FRAME
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      vp9_clear_segdata(seg, 0, SEG_LVL_REF_FRAME);
      vp9_set_segdata(seg, 0, SEG_LVL_REF_FRAME, ALTREF_FRAME);
      vp9_clear_segdata(seg, 1, SEG_LVL_REF_FRAME);
      vp9_set_segdata(seg, 1, SEG_LVL_REF_FRAME, ALTREF_FRAME);
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      // Skip all MBs if high Q (0,0 mv and skip coeffs)
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      if (high_q) {
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        vp9_enable_segfeature(seg, 0, SEG_LVL_SKIP);
        vp9_enable_segfeature(seg, 1, SEG_LVL_SKIP);
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      }
1039
      // Enable data update
1040
      seg->update_data = 1;
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    } else {
      // All other frames.

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      // No updates.. leave things as they are.
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      seg->update_map = 0;
      seg->update_data = 0;
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    }
  }
1049
}
1050
#endif  // !CONFIG_REALTIME_ONLY
1051

1052
static void update_reference_segmentation_map(VP9_COMP *cpi) {
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  VP9_COMMON *const cm = &cpi->common;
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  MODE_INFO **mi_8x8_ptr = cm->mi_grid_visible;
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  uint8_t *cache_ptr = cm->last_frame_seg_map;
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  int row, col;

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  for (row = 0; row < cm->mi_rows; row++) {
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    MODE_INFO **mi_8x8 = mi_8x8_ptr;
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    uint8_t *cache = cache_ptr;
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    for (col = 0; col < cm->mi_cols; col++, mi_8x8++, cache++)
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      cache[0] = mi_8x8[0]->segment_id;
1063
    mi_8x8_ptr += cm->mi_stride;
1064
    cache_ptr += cm->mi_cols;
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  }
}

1068
static void alloc_raw_frame_buffers(VP9_COMP *cpi) {
1069
  VP9_COMMON *cm = &cpi->common;
1070
  const VP9EncoderConfig *oxcf = &cpi->oxcf;
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  if (!cpi->lookahead)
    cpi->lookahead = vp9_lookahead_init(oxcf->width, oxcf->height,
                                        cm->subsampling_x, cm->subsampling_y,
1075
#if CONFIG_VP9_HIGHBITDEPTH
1076
                                        cm->use_highbitdepth,
1077
#endif
1078
                                        oxcf->lag_in_frames);
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  if (!cpi->lookahead)
1080
    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
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                       "Failed to allocate lag buffers");
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1082

1083
  // TODO(agrange) Check if ARF is enabled and skip allocation if not.
1084
  if (vpx_realloc_frame_buffer(&cpi->alt_ref_buffer, oxcf->width, oxcf->height,
1085
                               cm->subsampling_x, cm->subsampling_y,
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#if CONFIG_VP9_HIGHBITDEPTH
                               cm->use_highbitdepth,
#endif
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                               VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment,
                               NULL, NULL, NULL))
1091
    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
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                       "Failed to allocate altref buffer");
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1093
}
1094

1095
static void alloc_util_frame_buffers(VP9_COMP *cpi) {
1096
  VP9_COMMON *const cm = &cpi->common;
1097
  if (vpx_realloc_frame_buffer(&cpi->last_frame_uf, cm->width, cm->height,
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                               cm->subsampling_x, cm->subsampling_y,
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#if CONFIG_VP9_HIGHBITDEPTH
                               cm->use_highbitdepth,
#endif
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                               VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment,
                               NULL, NULL, NULL))
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    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
1105
                       "Failed to allocate last frame buffer");
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1107
  if (vpx_realloc_frame_buffer(&cpi->scaled_source, cm->width, cm->height,
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                               cm->subsampling_x, cm->subsampling_y,
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#if CONFIG_VP9_HIGHBITDEPTH
                               cm->use_highbitdepth,
#endif
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                               VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment,
                               NULL, NULL, NULL))
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    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
1115
                       "Failed to allocate scaled source buffer");
1116

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  // For 1 pass cbr: allocate scaled_frame that may be used as an intermediate
  // buffer for a 2 stage down-sampling: two stages of 1:2 down-sampling for a
  // target of 1/4x1/4.
  if (is_one_pass_cbr_svc(cpi) && !cpi->svc.scaled_temp_is_alloc) {
    cpi->svc.scaled_temp_is_alloc = 1;
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    if (vpx_realloc_frame_buffer(
            &cpi->svc.scaled_temp, cm->width >> 1, cm->height >> 1,
            cm->subsampling_x, cm->subsampling_y,
1125
#if CONFIG_VP9_HIGHBITDEPTH
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            cm->use_highbitdepth,
1127
#endif
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            VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment, NULL, NULL, NULL))
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      vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                         "Failed to allocate scaled_frame for svc ");
  }

1133
  if (vpx_realloc_frame_buffer(&cpi->scaled_last_source, cm->width, cm->height,
1134
                               cm->subsampling_x, cm->subsampling_y,
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#if CONFIG_VP9_HIGHBITDEPTH
                               cm->use_highbitdepth,
#endif
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                               VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment,
                               NULL, NULL, NULL))
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    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
1141
                       "Failed to allocate scaled last source buffer");
1142
#ifdef ENABLE_KF_DENOISE
1143
  if (vpx_realloc_frame_buffer(&cpi->raw_unscaled_source, cm->width, cm->height,
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                               cm->subsampling_x, cm->subsampling_y,
#if CONFIG_VP9_HIGHBITDEPTH
                               cm->use_highbitdepth,
#endif
                               VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment,
                               NULL, NULL, NULL))
    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
                       "Failed to allocate unscaled raw source frame buffer");

1153
  if (vpx_realloc_frame_buffer(&cpi->raw_scaled_source, cm->width, cm->height,
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                               cm->subsampling_x, cm->subsampling_y,
#if CONFIG_VP9_HIGHBITDEPTH
                               cm->use_highbitdepth,
#endif
                               VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment,
                               NULL, NULL, NULL))
    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
                       "Failed to allocate scaled raw source frame buffer");
#endif
1163
}
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static int alloc_context_buffers_ext(VP9_COMP *cpi) {
  VP9_COMMON *cm = &cpi->common;
  int mi_size = cm->mi_cols * cm->mi_rows;

  cpi->mbmi_ext_base = vpx_calloc(mi_size, sizeof(*cpi->mbmi_ext_base));
1170
  if (!cpi->mbmi_ext_base) return 1;
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  return 0;
}

1175
static void alloc_compressor_data(VP9_COMP *cpi) {
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  VP9_COMMON *cm = &cpi->common;
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  int sb_rows;
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  vp9_alloc_context_buffers(cm, cm->width, cm->height);

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  alloc_context_buffers_ext(cpi);

1183
  vpx_free(cpi->tile_tok[0][0]);
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  {
    unsigned int tokens = get_token_alloc(cm->mb_rows, cm->mb_cols);
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    CHECK_MEM_ERROR(cm, cpi->tile_tok[0][0],
1188
                    vpx_calloc(tokens, sizeof(*cpi->tile_tok[0][0])));
1189
  }
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  sb_rows = mi_cols_aligned_to_sb(cm->mi_rows) >> MI_BLOCK_SIZE_LOG2;
  vpx_free(cpi->tplist[0][0]);
  CHECK_MEM_ERROR(
      cm, cpi->tplist[0][0],
      vpx_calloc(sb_rows * 4 * (1 << 6), sizeof(*cpi->tplist[0][0])));

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  vp9_setup_pc_tree(&cpi->common, &cpi->td);
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}

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void vp9_new_framerate(VP9_COMP *cpi, double framerate) {
  cpi->framerate = framerate < 0.1 ? 30 : framerate;
  vp9_rc_update_framerate(cpi);
}

static void set_tile_limits(VP9_COMP *cpi) {
  VP9_COMMON *const cm = &cpi->common;

  int min_log2_tile_cols, max_log2_tile_cols;
  vp9_get_tile_n_bits(cm->mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);

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  if (is_two_pass_svc(cpi) && (cpi->svc.encode_empty_frame_state == ENCODING ||
                               cpi->svc.number_spatial_layers > 1)) {
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    cm->log2_tile_cols = 0;
    cm->log2_tile_rows = 0;
  } else {
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    cm->log2_tile_cols =
        clamp(cpi->oxcf.tile_columns, min_log2_tile_cols, max_log2_tile_cols);
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    cm->log2_tile_rows = cpi->oxcf.tile_rows;
  }
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  if (cpi->oxcf.target_level == LEVEL_AUTO) {
    const uint32_t pic_size = cpi->common.width * cpi->common.height;
    const int level_tile_cols = log_tile_cols_from_picsize_level(pic_size);
    if (cm->log2_tile_cols > level_tile_cols) {
      cm->log2_tile_cols = VPXMAX(level_tile_cols, min_log2_tile_cols);
    }
  }
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}

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static void update_frame_size(VP9_COMP *cpi) {
  VP9_COMMON *const cm = &cpi->common;
1232
  MACROBLOCKD *const xd = &cpi->td.mb.e_mbd;
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  vp9_set_mb_mi(cm, cm->width, cm->height);
  vp9_init_context_buffers(cm);
1236
  vp9_init_macroblockd(cm, xd, NULL);
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  cpi->td.mb.mbmi_ext_base = cpi->mbmi_ext_base;
  memset(cpi->mbmi_ext_base, 0,
         cm->mi_rows * cm->mi_cols * sizeof(*cpi->mbmi_ext_base));
1240

1241 1242
  set_tile_limits(cpi);

1243
  if (is_two_pass_svc(cpi)) {
1244
    if (vpx_realloc_frame_buffer(&cpi->alt_ref_buffer, cm->width, cm->height,
1245
                                 cm->subsampling_x, cm->subsampling_y,
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#if CONFIG_VP9_HIGHBITDEPTH
                                 cm->use_highbitdepth,
#endif
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                                 VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment,
                                 NULL, NULL, NULL))
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      vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
                         "Failed to reallocate alt_ref_buffer");
  }
1254 1255
}

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static void init_buffer_indices(VP9_COMP *cpi) {
  cpi->lst_fb_idx = 0;
  cpi->gld_fb_idx = 1;
  cpi->alt_fb_idx = 2;
}

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static void init_level_constraint(LevelConstraint *lc) {
  lc->level_index = -1;
  lc->max_cpb_size = INT_MAX;
  lc->max_frame_size = INT_MAX;
  lc->rc_config_updated = 0;
  lc->fail_flag = 0;
}

static void set_level_constraint(LevelConstraint *ls, int8_t level_index) {
  vpx_clear_system_state();
  ls->level_index = level_index;
  if (level_index >= 0) {
    ls->max_cpb_size = vp9_level_defs[level_index].max_cpb_size * (double)1000;
  }
}

1278
static void init_config(struct VP9_COMP *cpi, VP9EncoderConfig *oxcf) {
1279
  VP9_COMMON *const cm = &cpi->common;
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1280

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1281
  cpi->oxcf = *oxcf;
1282
  cpi->framerate = oxcf->init_framerate;
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  cm->profile = oxcf->profile;
  cm->bit_depth = oxcf->bit_depth;
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#if CONFIG_VP9_HIGHBITDEPTH
  cm->use_highbitdepth = oxcf->use_highbitdepth;
#endif
1288
  cm->color_space = oxcf->color_space;
1289
  cm->color_range = oxcf->color_range;
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1291
  cpi->target_level = oxcf->target_level;
1292
  cpi->keep_level_stats = oxcf->target_level != LEVEL_MAX;
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  set_level_constraint(&cpi->level_constraint,
                       get_level_index(cpi->target_level));
1295

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  cm->width = oxcf->width;
  cm->height = oxcf->height;
1298
  alloc_compressor_data(cpi);
1299

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  cpi->svc.temporal_layering_mode = oxcf->temporal_layering_mode;

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