vp9/encoder/vp9_rdopt.h

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

#ifndef VP9_ENCODER_VP9_RDOPT_H_
#define VP9_ENCODER_VP9_RDOPT_H_

#include <limits.h>

#include "vp9/encoder/vp9_encoder.h"

#ifdef __cplusplus
extern "C" {
#endif

#define RDDIV_BITS          7

#define RDCOST(RM, DM, R, D) \
  (((128 + ((int64_t)R) * (RM)) >> 8) + (D << DM))
#define QIDX_SKIP_THRESH     115

#define MV_COST_WEIGHT      108
#define MV_COST_WEIGHT_SUB  120

#define INVALID_MV 0x80008000

struct TileInfo;

int vp9_compute_rd_mult(const VP9_COMP *cpi, int qindex);

void vp9_initialize_rd_consts(VP9_COMP *cpi);

void vp9_initialize_me_consts(VP9_COMP *cpi, int qindex);

void vp9_model_rd_from_var_lapndz(unsigned int var, unsigned int n,
                                  unsigned int qstep, int *rate,
                                  int64_t *dist);

int vp9_get_switchable_rate(const VP9_COMP *cpi);

void vp9_setup_buffer_inter(VP9_COMP *cpi, MACROBLOCK *x,
                            const TileInfo *const tile,
                            MV_REFERENCE_FRAME ref_frame,
                            BLOCK_SIZE block_size,
                            int mi_row, int mi_col,
                            int_mv frame_nearest_mv[MAX_REF_FRAMES],
                            int_mv frame_near_mv[MAX_REF_FRAMES],
                            struct buf_2d yv12_mb[4][MAX_MB_PLANE]);

const YV12_BUFFER_CONFIG *vp9_get_scaled_ref_frame(const VP9_COMP *cpi,
                                                   int ref_frame);

void vp9_rd_pick_intra_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
                               int *r, int64_t *d, BLOCK_SIZE bsize,
                               PICK_MODE_CONTEXT *ctx, int64_t best_rd);

int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
                                  const struct TileInfo *const tile,
                                  int mi_row, int mi_col,
                                  int *returnrate,
                                  int64_t *returndistortion,
                                  BLOCK_SIZE bsize,
                                  PICK_MODE_CONTEXT *ctx,
                                  int64_t best_rd_so_far);

int64_t vp9_rd_pick_inter_mode_sub8x8(VP9_COMP *cpi, MACROBLOCK *x,
                                      const struct TileInfo *const tile,
                                      int mi_row, int mi_col,
                                      int *returnrate,
                                      int64_t *returndistortion,
                                      BLOCK_SIZE bsize,
                                      PICK_MODE_CONTEXT *ctx,
                                      int64_t best_rd_so_far);

void vp9_init_me_luts();

void vp9_get_entropy_contexts(BLOCK_SIZE bsize, TX_SIZE tx_size,
                              const struct macroblockd_plane *pd,
                              ENTROPY_CONTEXT t_above[16],
                              ENTROPY_CONTEXT t_left[16]);

void vp9_set_rd_speed_thresholds(VP9_COMP *cpi);

void vp9_set_rd_speed_thresholds_sub8x8(VP9_COMP *cpi);

static INLINE int rd_less_than_thresh(int64_t best_rd, int thresh,
                                      int thresh_fact) {
    return best_rd < ((int64_t)thresh * thresh_fact >> 5) || thresh == INT_MAX;
}

static INLINE int full_pixel_search(VP9_COMP *cpi, MACROBLOCK *x,
                                    BLOCK_SIZE bsize, MV *mvp_full,
                                    int step_param, int error_per_bit,
                                    const MV *ref_mv, MV *tmp_mv,
                                    int var_max, int rd) {
  const SPEED_FEATURES *const sf = &cpi->sf;
  const SEARCH_METHODS method = sf->search_method;
  vp9_variance_fn_ptr_t *fn_ptr = &cpi->fn_ptr[bsize];
  int var = 0;

  switch (method) {
    case FAST_DIAMOND:
      var = vp9_fast_dia_search(x, mvp_full, step_param, error_per_bit, 0,
                                fn_ptr, 1, ref_mv, tmp_mv);
      break;
    case FAST_HEX:
      var = vp9_fast_hex_search(x, mvp_full, step_param, error_per_bit, 0,
                                fn_ptr, 1, ref_mv, tmp_mv);
      break;
    case HEX:
      var = vp9_hex_search(x, mvp_full, step_param, error_per_bit, 1,
                           fn_ptr, 1, ref_mv, tmp_mv);
      break;
    case SQUARE:
      var = vp9_square_search(x, mvp_full, step_param, error_per_bit, 1,
                              fn_ptr, 1, ref_mv, tmp_mv);
      break;
    case BIGDIA:
      var = vp9_bigdia_search(x, mvp_full, step_param, error_per_bit, 1,
                              fn_ptr, 1, ref_mv, tmp_mv);
      break;
    case NSTEP:
      var = vp9_full_pixel_diamond(cpi, x, mvp_full, step_param, error_per_bit,
                                   (sf->max_step_search_steps - 1) - step_param,
                                   1, fn_ptr, ref_mv, tmp_mv);
      break;
    default:
      assert(!"Invalid search method.");
  }

  if (method != NSTEP && rd && var < var_max)
    var = vp9_get_mvpred_var(x, tmp_mv, ref_mv, fn_ptr, 1);

  return var;
}

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // VP9_ENCODER_VP9_RDOPT_H_