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61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
#ifndef CONTEXT_H_
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#define CONTEXT_H_
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/*****************************************************************************
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* This file is part of Kvazaar HEVC encoder.
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*
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* Copyright (C) 2013-2015 Tampere University of Technology and others (see
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* COPYING file).
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*
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* Kvazaar is free software: you can redistribute it and/or modify it under
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* the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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*
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* Kvazaar is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with Kvazaar. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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/**
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* \ingroup CABAC
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* \file
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* Context derivation for CABAC.
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*/
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#include "cabac.h"
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#include "encoderstate.h"
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#include "global.h" // IWYU pragma: keep
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// Functions
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void kvz_ctx_init(cabac_ctx_t* ctx, int32_t qp, int32_t init_value, uint8_t rate);
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void kvz_init_contexts(encoder_state_t *state, int8_t QP, int8_t slice);
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void kvz_context_copy(encoder_state_t * target_state, const encoder_state_t * source_state);
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int32_t kvz_context_calc_pattern_sig_ctx( const uint32_t *sig_coeff_group_flag, uint32_t pos_x, uint32_t pos_y, int32_t width);
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uint32_t kvz_context_get_sig_coeff_group( uint32_t *sig_coeff_group_flag,uint32_t pos_x, uint32_t pos_y,int32_t width);
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int32_t kvz_context_get_sig_ctx_inc(int32_t pattern_sig_ctx,uint32_t scan_idx,int32_t pos_x,
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int32_t pos_y,int32_t block_type, int8_t texture_type);
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uint32_t kvz_context_get_sig_ctx_idx_abs(const coeff_t* coeff, int32_t pos_x, int32_t pos_y,
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uint32_t height, uint32_t width, int8_t type,
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int32_t* temp_diag, int32_t* temp_sum);
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uint32_t kvz_abs_sum(const coeff_t* coeff, int32_t pos_x, int32_t pos_y,
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uint32_t height, uint32_t width, uint32_t baselevel);
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uint32_t kvz_go_rice_par_abs(const coeff_t* coeff, int32_t pos_x, int32_t pos_y,
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uint32_t height, uint32_t width, uint32_t baselevel);
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#define CNU 35
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#define DWS 8
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#endif
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