mirror of
https://github.com/cemu-project/Cemu.git
synced 2024-11-22 09:09:18 +01:00
134 lines
5.2 KiB
C
134 lines
5.2 KiB
C
/******************************************************************************
|
||
*
|
||
* Copyright (C) 2015 The Android Open Source Project
|
||
*
|
||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
* you may not use this file except in compliance with the License.
|
||
* You may obtain a copy of the License at:
|
||
*
|
||
* http://www.apache.org/licenses/LICENSE-2.0
|
||
*
|
||
* Unless required by applicable law or agreed to in writing, software
|
||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
* See the License for the specific language governing permissions and
|
||
* limitations under the License.
|
||
*
|
||
*****************************************************************************
|
||
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
|
||
*/
|
||
|
||
/**
|
||
******************************************************************************
|
||
* @file ih264_cavlc_tables.h
|
||
*
|
||
* @brief
|
||
* This file contains enumerations, macros and extern declarations of H264
|
||
* cavlc tables
|
||
*
|
||
* @author
|
||
* Ittiam
|
||
*
|
||
* @remarks
|
||
* none
|
||
******************************************************************************
|
||
*/
|
||
|
||
#ifndef IH264_CAVLC_TABLES_H_
|
||
#define IH264_CAVLC_TABLES_H_
|
||
|
||
/*****************************************************************************/
|
||
/* Constant Macros */
|
||
/*****************************************************************************/
|
||
/**
|
||
******************************************************************************
|
||
* @brief maximum zeros left
|
||
******************************************************************************
|
||
*/
|
||
#define MAX_ZERO_LEFT 6
|
||
|
||
/*****************************************************************************/
|
||
/* Extern global declarations */
|
||
/*****************************************************************************/
|
||
|
||
/**
|
||
******************************************************************************
|
||
* @brief Assignment of cbp to a codenum for intra and inter prediction modes
|
||
* chroma format idc != 0
|
||
* input : cbp, intra - 0/inter - 1
|
||
* output : codenum
|
||
* @remarks Table 9-4 <20> Assignment of codeNum to values of coded_block_pattern
|
||
* for macroblock prediction modes in H264 spec
|
||
******************************************************************************
|
||
*/
|
||
extern const UWORD8 gu1_cbp_map_tables[48][2];
|
||
|
||
/**
|
||
******************************************************************************
|
||
* @brief total non-zero coefficients and numbers of trailing ones of a residual
|
||
* block are mapped to coefftoken using the tables given below.
|
||
* input : VLC-Num | Trailing ones | Total coeffs
|
||
* output : coeff_token (code word, size of the code word)
|
||
* @remarks Table-9-5 coeff_token mapping to TotalCoeff( coeff_token )
|
||
* and TrailingOnes( coeff_token ) in H264 spec
|
||
******************************************************************************
|
||
*/
|
||
extern const UWORD8 gu1_code_coeff_token_table[3][4][16];
|
||
extern const UWORD8 gu1_size_coeff_token_table[3][4][16];
|
||
extern const UWORD8 gu1_code_coeff_token_table_chroma[4][4];
|
||
extern const UWORD8 gu1_size_coeff_token_table_chroma[4][4];
|
||
|
||
/**
|
||
******************************************************************************
|
||
* @brief Thresholds for determining whether to increment Level table number.
|
||
* input : suffix_length
|
||
* output : threshold
|
||
******************************************************************************
|
||
*/
|
||
extern const UWORD8 gu1_threshold_vlc_level[6];
|
||
|
||
/**
|
||
******************************************************************************
|
||
* @brief table for encoding total number of zeros
|
||
* input : coeff_token, total zeros
|
||
* output : code word, size of the code word
|
||
* @remarks Table-9-7, 9-8 total_zeros tables for 4x4 blocks with
|
||
* TotalCoeff( coeff_token ) in H264 spec
|
||
******************************************************************************
|
||
*/
|
||
extern const UWORD8 gu1_size_zero_table[135];
|
||
extern const UWORD8 gu1_code_zero_table[135];
|
||
extern const UWORD8 gu1_size_zero_table_chroma[9];
|
||
extern const UWORD8 gu1_code_zero_table_chroma[9];
|
||
|
||
/**
|
||
******************************************************************************
|
||
* @brief index to access zero table (for speed)
|
||
* input : TotalCoeff( coeff_token )
|
||
* output : index to access zero table
|
||
******************************************************************************
|
||
*/
|
||
extern const UWORD8 gu1_index_zero_table[15];
|
||
|
||
/**
|
||
******************************************************************************
|
||
* @brief table for encoding runs of zeros before
|
||
* input : zeros left, runs of zeros before
|
||
* output : code word, size of the code word
|
||
* @remarks Table-9-10 table for run_before in H264 spec
|
||
******************************************************************************
|
||
*/
|
||
extern const UWORD8 gu1_size_run_table[42];
|
||
extern const UWORD8 gu1_code_run_table[42];
|
||
|
||
/**
|
||
******************************************************************************
|
||
* @brief index to access run table (look up)
|
||
* input : zeros left
|
||
* output : index to access run table
|
||
******************************************************************************
|
||
*/
|
||
extern const UWORD8 gu1_index_run_table[7];
|
||
|
||
#endif /* IH264_CAVLC_TABLES_H_ */
|