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190 lines
6.1 KiB
190 lines
6.1 KiB
/****************************************************************************** |
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* |
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* Copyright (C) 2015 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at: |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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***************************************************************************** |
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
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*/ |
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/** |
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****************************************************************************** |
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* @file ih264_cabac_tables.h |
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* |
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* @brief |
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* This file contains enumerations, macros and extern declarations of H264 |
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* cabac tables |
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* |
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* @author |
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* Ittiam |
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* |
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* @remarks |
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* none |
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****************************************************************************** |
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*/ |
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#ifndef IH264_CABAC_TABLES_H_ |
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#define IH264_CABAC_TABLES_H_ |
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/*****************************************************************************/ |
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/* Constant Macros */ |
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/*****************************************************************************/ |
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/** |
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****************************************************************************** |
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* @brief maximum range of cabac_init_idc (0-2) + 1 for ISLICE |
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****************************************************************************** |
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*/ |
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#define NUM_CAB_INIT_IDC_PLUS_ONE 4 |
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/** |
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****************************************************************************** |
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* @brief max range of qps in H264 (0-51) |
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****************************************************************************** |
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*/ |
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#define QP_RANGE 52 |
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/** |
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****************************************************************************** |
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* @brief max range of cabac contexts in H264 (0-459) |
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****************************************************************************** |
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*/ |
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#define NUM_CABAC_CTXTS 460 |
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/** Macros for Cabac checks */ |
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/** MbType */ |
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/** |x|x|I_PCM|SKIP| |
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|S|Inter/Intra|P/B|NON-BD16x16/BD16x16,I16x16/I4x4| */ |
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#define CAB_INTRA 0x00 /* 0000 00xx */ |
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#define CAB_INTER 0x04 /* 0000 01xx */ |
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#define CAB_I4x4 0x00 /* 0000 00x0 */ |
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#define CAB_I16x16 0x01 /* 0000 00x1 */ |
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#define CAB_BD16x16 0x04 /* 0000 0100 */ |
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#define CAB_NON_BD16x16 0x05 /* 0000 0101 */ |
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#define CAB_P 0x07 /* 0000 0111 */ |
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#define CAB_SI4x4 0x08 /* 0000 10x0 */ |
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#define CAB_SI16x16 0x09 /* 0000 10x1 */ |
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#define CAB_SKIP_MASK 0x10 /* 0001 0000 */ |
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#define CAB_SKIP 0x10 /* 0001 0000 */ |
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#define CAB_P_SKIP 0x16 /* 0001 x11x */ |
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#define CAB_B_SKIP 0x14 /* 0001 x100 */ |
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#define CAB_BD16x16_MASK 0x07 /* 0000 0111 */ |
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#define CAB_INTRA_MASK 0x04 /* 0000 0100 */ |
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#define CAB_I_PCM 0x20 /* 001x xxxx */ |
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/** |
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****************************************************************************** |
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* @enum ctxBlockCat |
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****************************************************************************** |
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*/ |
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typedef enum |
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{ |
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LUMA_DC_CTXCAT = 0, |
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LUMA_AC_CTXCAT = 1, |
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LUMA_4X4_CTXCAT = 2, |
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CHROMA_DC_CTXCAT = 3, |
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CHROMA_AC_CTXCAT = 4, |
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LUMA_8X8_CTXCAT = 5, |
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NUM_CTX_CAT = 6 |
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} CTX_BLOCK_CAT; |
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/** |
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****************************************************************************** |
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* @enum ctxIdxOffset |
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****************************************************************************** |
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*/ |
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typedef enum |
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{ |
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MB_TYPE_SI_SLICE = 0, |
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MB_TYPE_I_SLICE = 3, |
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MB_SKIP_FLAG_P_SLICE = 11, |
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MB_TYPE_P_SLICE = 14, |
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SUB_MB_TYPE_P_SLICE = 21, |
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MB_SKIP_FLAG_B_SLICE = 24, |
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MB_TYPE_B_SLICE = 27, |
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SUB_MB_TYPE_B_SLICE = 36, |
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MVD_X = 40, |
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MVD_Y = 47, |
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REF_IDX = 54, |
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MB_QP_DELTA = 60, |
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INTRA_CHROMA_PRED_MODE = 64, |
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PREV_INTRA4X4_PRED_MODE_FLAG = 68, |
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REM_INTRA4X4_PRED_MODE = 69, |
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MB_FIELD_DECODING_FLAG = 70, |
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CBP_LUMA = 73, |
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CBP_CHROMA = 77, |
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CBF = 85, |
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SIGNIFICANT_COEFF_FLAG_FRAME = 105, |
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SIGNIFICANT_COEFF_FLAG_FLD = 277, |
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LAST_SIGNIFICANT_COEFF_FLAG_FRAME = 166, |
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LAST_SIGNIFICANT_COEFF_FLAG_FLD = 338, |
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COEFF_ABS_LEVEL_MINUS1 = 227, |
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/* High profile related Syntax element CABAC offsets */ |
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TRANSFORM_SIZE_8X8_FLAG = 399, |
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SIGNIFICANT_COEFF_FLAG_8X8_FRAME = 402, |
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LAST_SIGNIFICANT_COEFF_FLAG_8X8_FRAME = 417, |
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COEFF_ABS_LEVEL_MINUS1_8X8 = 426, |
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SIGNIFICANT_COEFF_FLAG_8X8_FIELD = 436, |
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LAST_SIGNIFICANT_COEFF_FLAG_8X8_FIELD = 451 |
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} cabac_table_num_t; |
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/** |
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****************************************************************************** |
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* @enum ctxIdxOffset |
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****************************************************************************** |
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*/ |
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typedef enum |
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{ |
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SIG_COEFF_CTXT_CAT_0_OFFSET = 0, |
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SIG_COEFF_CTXT_CAT_1_OFFSET = 15, |
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SIG_COEFF_CTXT_CAT_2_OFFSET = 29, |
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SIG_COEFF_CTXT_CAT_3_OFFSET = 44, |
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SIG_COEFF_CTXT_CAT_4_OFFSET = 47, |
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SIG_COEFF_CTXT_CAT_5_OFFSET = 0, |
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COEFF_ABS_LEVEL_CAT_0_OFFSET = 0, |
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COEFF_ABS_LEVEL_CAT_1_OFFSET = 10, |
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COEFF_ABS_LEVEL_CAT_2_OFFSET = 20, |
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COEFF_ABS_LEVEL_CAT_3_OFFSET = 30, |
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COEFF_ABS_LEVEL_CAT_4_OFFSET = 39, |
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COEFF_ABS_LEVEL_CAT_5_OFFSET = 0 |
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} cabac_blk_cat_offset_t; |
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/*****************************************************************************/ |
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/* Extern global declarations */ |
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/*****************************************************************************/ |
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/* CABAC Table declaration*/ |
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extern const UWORD32 gau4_ih264_cabac_table[128][4]; |
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/*****************************************************************************/ |
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/* Cabac tables for context initialization depending upon type of Slice, */ |
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/* cabac init Idc value and Qp. */ |
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/*****************************************************************************/ |
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extern const UWORD8 gau1_ih264_cabac_ctxt_init_table[NUM_CAB_INIT_IDC_PLUS_ONE][QP_RANGE][NUM_CABAC_CTXTS]; |
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#endif /* IH264_CABAC_TABLES_H_ */
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