vp9_encoder.c 157 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_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_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_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 OUTPUT_YUV_REC
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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
FILE *yuv_skinmap_file = NULL;
#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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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;
    break;
    case ONETWO:
      *hr = 1;
      *hs = 2;
    break;
    default:
      *hr = 1;
      *hs = 1;
       assert(0);
      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;
  int i;
  if (cpi->active_map.enabled || cpi->active_map.update)
    for (i = 0; i < cpi->common.mi_rows * cpi->common.mi_cols; ++i)
      if (seg_map[i] == AM_SEGMENT_ID_INACTIVE)
        seg_map[i] = AM_SEGMENT_ID_ACTIVE;
}

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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.
      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;
  }
}

int vp9_set_active_map(VP9_COMP* cpi,
                       unsigned char* new_map_16x16,
                       int rows,
                       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,
                       int cols) {
  if (rows == cpi->common.mb_rows && cols == cpi->common.mb_cols &&
      new_map_16x16) {
    unsigned char* const seg_map_8x8 = cpi->segmentation_map;
    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 {
    if (!cpi->use_svc)
      cm->frame_context_idx = cpi->refresh_alt_ref_frame;
  }

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  if (cm->frame_type == KEY_FRAME) {
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    if (!is_two_pass_svc(cpi))
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      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));
  if (!cm->mip)
    return 1;
  cm->prev_mip = vpx_calloc(mi_size, sizeof(*cm->prev_mip));
  if (!cm->prev_mip)
    return 1;
  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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    vp9_temporal_filter_init();
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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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  // Delete sementation map
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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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  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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  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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  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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  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.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,
         (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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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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    // 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.
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    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);
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      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);
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      // Where relevant assume segment data is delta data
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      seg->abs_delta = SEGMENT_DELTADATA;
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    }
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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
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    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);
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        // Segment coding disabled for compred testing
        if (high_q || (cpi->static_mb_pct == 100)) {
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          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

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        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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      }
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    } 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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      }
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      // Enable data update
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      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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    }
  }
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}

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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;
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    mi_8x8_ptr += cm->mi_stride;
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    cache_ptr += cm->mi_cols;
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  }
}

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static void alloc_raw_frame_buffers(VP9_COMP *cpi) {
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  VP9_COMMON *cm = &cpi->common;
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  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,
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#if CONFIG_VP9_HIGHBITDEPTH
                                      cm->use_highbitdepth,
#endif
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                                      oxcf->lag_in_frames);
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  if (!cpi->lookahead)
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    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
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                       "Failed to allocate lag buffers");
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  // TODO(agrange) Check if ARF is enabled and skip allocation if not.
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  if (vpx_realloc_frame_buffer(&cpi->alt_ref_buffer,
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                               oxcf->width, oxcf->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,
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                       "Failed to allocate altref buffer");
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}
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static void alloc_util_frame_buffers(VP9_COMP *cpi) {
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  VP9_COMMON *const cm = &cpi->common;
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  if (vpx_realloc_frame_buffer(&cpi->last_frame_uf,
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                               cm->width, cm->height,
                               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,
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                       "Failed to allocate last frame buffer");
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  if (vpx_realloc_frame_buffer(&cpi->scaled_source,
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                               cm->width, cm->height,
                               cm->subsampling_x, cm->subsampling_y,
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                               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,
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                       "Failed to allocate scaled source buffer");
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                               cm->width, cm->height,
                               cm->subsampling_x, cm->subsampling_y,
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                               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,
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                       "Failed to allocate scaled last source buffer");
}
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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));
  if (!cpi->mbmi_ext_base)
    return 1;

  return 0;
}

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

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  alloc_context_buffers_ext(cpi);

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  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],
        vpx_calloc(tokens, sizeof(*cpi->tile_tok[0][0])));
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  }
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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 {
    cm->log2_tile_cols = clamp(cpi->oxcf.tile_columns,
                               min_log2_tile_cols, max_log2_tile_cols);
    cm->log2_tile_rows = cpi->oxcf.tile_rows;
  }
}

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

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  if (is_two_pass_svc(cpi)) {
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    if (vpx_realloc_frame_buffer(&cpi->alt_ref_buffer,
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                                 cm->width, cm->height,
                                 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");
  }
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}

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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_config(struct VP9_COMP *cpi, VP9EncoderConfig *oxcf) {
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  VP9_COMMON *const cm = &cpi->common;
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  cpi->oxcf = *oxcf;
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  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
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  cm->color_space = oxcf->color_space;
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  cm->color_range = oxcf->color_range;
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  cm->width = oxcf->width;
  cm->height = oxcf->height;
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  alloc_compressor_data(cpi);
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  cpi->svc.temporal_layering_mode = oxcf->temporal_layering_mode;

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  // Single thread case: use counts in common.
  cpi->td.counts = &cm->counts;

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  // Spatial scalability.
  cpi->svc.number_spatial_layers = oxcf->ss_number_layers;
  // Temporal scalability.
  cpi->svc.number_temporal_layers = oxcf->ts_number_layers;

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  if ((cpi->svc.number_temporal_layers > 1 && cpi->oxcf.rc_mode == VPX_CBR) ||
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      ((cpi->svc.number_temporal_layers > 1 ||
        cpi->svc.number_spatial_layers > 1) &&
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       cpi->oxcf.pass != 1)) {
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    vp9_init_layer_context(cpi);
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  }

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  // change includes all joint functionality
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  vp9_change_config(cpi, oxcf);
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  cpi->static_mb_pct = 0;
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  cpi->ref_frame_flags = 0;
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  init_buffer_indices(cpi);
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  vp9_noise_estimate_init(&cpi->noise_estimate, cm->width, cm->height);
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}

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static void set_rc_buffer_sizes(RATE_CONTROL *rc,
                                const VP9EncoderConfig *oxcf) {
  const int64_t bandwidth = oxcf->target_bandwidth;
  const int64_t starting = oxcf->starting_buffer_level_ms;
  const int64_t optimal = oxcf->optimal_buffer_level_ms;
  const int64_t maximum = oxcf->maximum_buffer_size_ms;

  rc->starting_buffer_level = starting * bandwidth / 1000;
  rc->optimal_buffer_level = (optimal == 0) ? bandwidth / 8
                                            : optimal * bandwidth / 1000;
  rc->maximum_buffer_size = (maximum == 0) ? bandwidth / 8
                                           : maximum * bandwidth / 1000;
}

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#if CONFIG_VP9_HIGHBITDEPTH
#define HIGHBD_BFP(BT, SDF, SDAF, VF, SVF, SVAF, SDX3F, SDX8F, SDX4DF) \
    cpi->fn_ptr[BT].sdf = SDF; \
    cpi->fn_ptr[BT].sdaf = SDAF; \
    cpi->fn_ptr[BT].vf = VF; \
    cpi->fn_ptr[BT].svf = SVF; \
    cpi->fn_ptr[BT].svaf = SVAF; \
    cpi->fn_ptr[BT].sdx3f = SDX3F; \
    cpi->fn_ptr[BT].sdx8f = SDX8F; \
    cpi->fn_ptr[BT].sdx4df = SDX4DF;

#define MAKE_BFP_SAD_WRAPPER(fnname) \
static unsigned int fnname##_bits8(const uint8_t *src_ptr, \
                                   int source_stride, \
                                   const uint8_t *ref_ptr, \
                                   int ref_stride) {  \
  return fnname(src_ptr, source_stride, ref_ptr, ref_stride); \
} \
static unsigned int fnname##_bits10(const uint8_t *src_ptr, \
                                    int source_stride, \
                                    const uint8_t *ref_ptr, \
                                    int ref_stride) {  \
  return fnname(src_ptr, source_stride, ref_ptr, ref_stride) >> 2; \
} \
static unsigned int fnname##_bits12(const uint8_t *src_ptr, \
                                    int source_stride, \
                                    const uint8_t *ref_ptr, \
                                    int ref_stride) {  \
  return fnname(src_ptr, source_stride, ref_ptr, ref_stride) >> 4; \
}

#define MAKE_BFP_SADAVG_WRAPPER(fnname) static unsigned int \
fnname##_bits8(const uint8_t *src_ptr, \
               int source_stride, \
               const uint8_t *ref_ptr, \
               int ref_stride, \
               const uint8_t *second_pred) {  \
  return fnname(src_ptr, source_stride, ref_ptr, ref_stride, second_pred); \
} \
static unsigned int fnname##_bits10(const uint8_t *src_ptr, \
                                    int source_stride, \
                                    const uint8_t *ref_ptr, \
                                    int ref_stride, \
                                    const uint8_t *second_pred) {  \
  return fnname(src_ptr, source_stride, ref_ptr, ref_stride, \
                second_pred) >> 2; \
} \
static unsigned int fnname##_bits12(const uint8_t *src_ptr, \
                                    int source_stride, \
                                    const uint8_t *ref_ptr, \
                                    int ref_stride, \
                                    const uint8_t *second_pred) {  \
  return fnname(src_ptr, source_stride, ref_ptr, ref_stride, \
                second_pred) >> 4; \
}

#define MAKE_BFP_SAD3_WRAPPER(fnname) \
static void fnname##_bits8(const uint8_t *src_ptr, \
                           int source_stride, \
                           const uint8_t *ref_ptr, \
                           int  ref_stride, \
                           unsigned int *sad_array) {  \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
} \
static void fnname##_bits10(const uint8_t *src_ptr, \
                            int source_stride, \
                            const uint8_t *ref_ptr, \
                            int  ref_stride, \
                            unsigned int *sad_array) {  \
  int i; \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
  for (i = 0; i < 3; i++) \
    sad_array[i] >>= 2; \
} \
static void fnname##_bits12(const uint8_t *src_ptr, \
                            int source_stride, \
                            const uint8_t *ref_ptr, \
                            int  ref_stride, \
                            unsigned int *sad_array) {  \
  int i; \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
  for (i = 0; i < 3; i++) \
    sad_array[i] >>= 4; \
}

#define MAKE_BFP_SAD8_WRAPPER(fnname) \
static void fnname##_bits8(const uint8_t *src_ptr, \
                           int source_stride, \
                           const uint8_t *ref_ptr, \
                           int  ref_stride, \
                           unsigned int *sad_array) {  \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
} \
static void fnname##_bits10(const uint8_t *src_ptr, \
                            int source_stride, \
                            const uint8_t *ref_ptr, \
                            int  ref_stride, \
                            unsigned int *sad_array) {  \
  int i; \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
  for (i = 0; i < 8; i++) \
    sad_array[i] >>= 2; \
} \
static void fnname##_bits12(const uint8_t *src_ptr, \
                            int source_stride, \
                            const uint8_t *ref_ptr, \
                            int  ref_stride, \
                            unsigned int *sad_array) {  \
  int i; \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
  for (i = 0; i < 8; i++) \
    sad_array[i] >>= 4; \
}
#define MAKE_BFP_SAD4D_WRAPPER(fnname) \
static void fnname##_bits8(const uint8_t *src_ptr, \
                           int source_stride, \
                           const uint8_t* const ref_ptr[], \
                           int  ref_stride, \
                           unsigned int *sad_array) {  \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
} \
static void fnname##_bits10(const uint8_t *src_ptr, \
                            int source_stride, \
                            const uint8_t* const ref_ptr[], \
                            int  ref_stride, \
                            unsigned int *sad_array) {  \
  int i; \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
  for (i = 0; i < 4; i++) \
  sad_array[i] >>= 2; \
} \
static void fnname##_bits12(const uint8_t *src_ptr, \
                            int source_stride, \
                            const uint8_t* const ref_ptr[], \
                            int  ref_stride, \
                            unsigned int *sad_array) {  \
  int i; \
  fnname(src_ptr, source_stride, ref_ptr, ref_stride, sad_array); \
  for (i = 0; i < 4; i++) \
  sad_array[i] >>= 4; \
}

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MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad32x16)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad32x16_avg)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad32x16x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad16x32)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad16x32_avg)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad16x32x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad64x32)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad64x32_avg)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad64x32x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad32x64)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad32x64_avg)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad32x64x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad32x32)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad32x32_avg)
MAKE_BFP_SAD3_WRAPPER(vpx_highbd_sad32x32x3)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad32x32x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad32x32x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad64x64)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad64x64_avg)
MAKE_BFP_SAD3_WRAPPER(vpx_highbd_sad64x64x3)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad64x64x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad64x64x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad16x16)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad16x16_avg)
MAKE_BFP_SAD3_WRAPPER(vpx_highbd_sad16x16x3)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad16x16x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad16x16x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad16x8)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad16x8_avg)
MAKE_BFP_SAD3_WRAPPER(vpx_highbd_sad16x8x3)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad16x8x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad16x8x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad8x16)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad8x16_avg)
MAKE_BFP_SAD3_WRAPPER(vpx_highbd_sad8x16x3)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad8x16x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad8x16x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad8x8)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad8x8_avg)
MAKE_BFP_SAD3_WRAPPER(vpx_highbd_sad8x8x3)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad8x8x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad8x8x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad8x4)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad8x4_avg)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad8x4x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad8x4x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad4x8)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad4x8_avg)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad4x8x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad4x8x4d)
MAKE_BFP_SAD_WRAPPER(vpx_highbd_sad4x4)
MAKE_BFP_SADAVG_WRAPPER(vpx_highbd_sad4x4_avg)
MAKE_BFP_SAD3_WRAPPER(vpx_highbd_sad4x4x3)
MAKE_BFP_SAD8_WRAPPER(vpx_highbd_sad4x4x8)
MAKE_BFP_SAD4D_WRAPPER(vpx_highbd_sad4x4x4d)
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static void  highbd_set_var_fns(VP9_COMP *const cpi) {
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  VP9_COMMON *const cm = &cpi->common;
  if (cm->use_highbitdepth) {
    switch (cm->bit_depth) {
      case VPX_BITS_8:
        HIGHBD_BFP(BLOCK_32X16,
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                   vpx_highbd_sad32x16_bits8,
                   vpx_highbd_sad32x16_avg_bits8,
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                   vpx_highbd_8_variance32x16,
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                   vpx_highbd_8_sub_pixel_variance32x16,
                   vpx_highbd_8_sub_pixel_avg_variance32x16,
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                   NULL,
                   NULL,
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                   vpx_highbd_sad32x16x4d_bits8)
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        HIGHBD_BFP(BLOCK_16X32,
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                   vpx_highbd_sad16x32_bits8,
                   vpx_highbd_sad16x32_avg_bits8,
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                   vpx_highbd_8_variance16x32,
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                   vpx_highbd_8_sub_pixel_variance16x32,
                   vpx_highbd_8_sub_pixel_avg_variance16x32,
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                   NULL,
                   NULL,
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                   vpx_highbd_sad16x32x4d_bits8)
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        HIGHBD_BFP(BLOCK_64X32,
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                   vpx_highbd_sad64x32_bits8,
                   vpx_highbd_sad64x32_avg_bits8,
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                   vpx_highbd_8_variance64x32,
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                   vpx_highbd_8_sub_pixel_variance64x32,
                   vpx_highbd_8_sub_pixel_avg_variance64x32,
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                   NULL,
                   NULL,
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                   vpx_highbd_sad64x32x4d_bits8)
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        HIGHBD_BFP(BLOCK_32X64,
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                   vpx_highbd_sad32x64_bits8,
                   vpx_highbd_sad32x64_avg_bits8,
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                   vpx_highbd_8_variance32x64,
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                   vpx_highbd_8_sub_pixel_variance32x64,
                   vpx_highbd_8_sub_pixel_avg_variance32x64,
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                   NULL,
                   NULL,
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                   vpx_highbd_sad32x64x4d_bits8)
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        HIGHBD_BFP(BLOCK_32X32,
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                   vpx_highbd_sad32x32_bits8,
                   vpx_highbd_sad32x32_avg_bits8,
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                   vpx_highbd_8_variance32x32,
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                   vpx_highbd_8_sub_pixel_variance32x32,
                   vpx_highbd_8_sub_pixel_avg_variance32x32,
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                   vpx_highbd_sad32x32x3_bits8,
                   vpx_highbd_sad32x32x8_bits8,
                   vpx_highbd_sad32x32x4d_bits8)
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        HIGHBD_BFP(BLOCK_64X64,
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                   vpx_highbd_sad64x64_bits8,
                   vpx_highbd_sad64x64_avg_bits8,
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                   vpx_highbd_8_variance64x64,
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                   vpx_highbd_8_sub_pixel_variance64x64,
                   vpx_highbd_8_sub_pixel_avg_variance64x64,
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                   vpx_highbd_sad64x64x3_bits8,
                   vpx_highbd_sad64x64x8_bits8,
                   vpx_highbd_sad64x64x4d_bits8)
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        HIGHBD_BFP(BLOCK_16X16,
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                   vpx_highbd_sad16x16_bits8,
                   vpx_highbd_sad16x16_avg_bits8,