encodetxb.h

/*
 * Copyright (c) 2017, Alliance for Open Media. All rights reserved.
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */
 
#ifndef AOM_AV1_ENCODER_ENCODETXB_H_
#define AOM_AV1_ENCODER_ENCODETXB_H_
 
#include "config/aom_config.h"
 
#include "av1/common/av1_common_int.h"
#include "av1/common/blockd.h"
#include "av1/common/txb_common.h"
#include "av1/encoder/block.h"
#include "av1/encoder/encoder.h"
#include "aom_dsp/bitwriter.h"
#ifdef __cplusplus
extern "C" {
#endif
 
#define TXB_SKIP_CTX_MASK 15
#define DC_SIGN_CTX_SHIFT 4
#define DC_SIGN_CTX_MASK 3
 
int av1_get_eob_pos_token(const int eob, int *const extra);
 
void av1_alloc_txb_buf(AV1_COMP *cpi);
void av1_free_txb_buf(AV1_COMP *cpi);
 
void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCK *const x,
                          aom_writer *w, int blk_row, int blk_col, int plane,
                          int block, TX_SIZE tx_size);
 
void av1_write_intra_coeffs_mb(const AV1_COMMON *const cm, MACROBLOCK *x,
                               aom_writer *w, BLOCK_SIZE bsize);
 
uint8_t av1_get_txb_entropy_context(const tran_low_t *qcoeff,
                                    const SCAN_ORDER *scan_order, int eob);
 
void av1_update_intra_mb_txb_context(const AV1_COMP *cpi, ThreadData *td,
                                     RUN_TYPE dry_run, BLOCK_SIZE bsize,
                                     uint8_t allow_update_cdf);
 
void av1_update_and_record_txb_context(int plane, int block, int blk_row,
                                       int blk_col, BLOCK_SIZE plane_bsize,
                                       TX_SIZE tx_size, void *arg);
 
void av1_record_txb_context(int plane, int block, int blk_row, int blk_col,
                            BLOCK_SIZE plane_bsize, TX_SIZE tx_size, void *arg);
 
CB_COEFF_BUFFER *av1_get_cb_coeff_buffer(const struct AV1_COMP *cpi, int mi_row,
                                         int mi_col);
 
static inline int av1_cost_skip_txb(const CoeffCosts *coeff_costs,
                                    const TXB_CTX *const txb_ctx, int plane,
                                    TX_SIZE tx_size) {
  const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size);
  const PLANE_TYPE plane_type = get_plane_type(plane);
  const LV_MAP_COEFF_COST *const coeff_costs_ =
      &coeff_costs->coeff_costs[txs_ctx][plane_type];
  return coeff_costs_->txb_skip_cost[txb_ctx->txb_skip_ctx][1];
}
 
// These numbers are empirically obtained.
static const int plane_rd_mult[REF_TYPES][PLANE_TYPES] = {
  { 17, 13 },
  { 16, 10 },
};
#ifdef __cplusplus
}
#endif
 
#endif  // AOM_AV1_ENCODER_ENCODETXB_H_