/***************************************************************************** * Copyright (C) 2013-2020 MulticoreWare, Inc * * Authors: Steve Borho * Min Chen * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. * * This program is also available under a commercial proprietary license. * For more information, contact us at license @ x265.com. *****************************************************************************/ #ifndef X265_CONTEXTS_H #define X265_CONTEXTS_H #include "common.h" #define NUM_SPLIT_FLAG_CTX 3 // number of context models for split flag #define NUM_SKIP_FLAG_CTX 3 // number of context models for skip flag #define NUM_MERGE_FLAG_EXT_CTX 1 // number of context models for merge flag of merge extended #define NUM_MERGE_IDX_EXT_CTX 1 // number of context models for merge index of merge extended #define NUM_PART_SIZE_CTX 4 // number of context models for partition size #define NUM_PRED_MODE_CTX 1 // number of context models for prediction mode #define NUM_ADI_CTX 1 // number of context models for intra prediction #define NUM_CHROMA_PRED_CTX 2 // number of context models for intra prediction (chroma) #define NUM_INTER_DIR_CTX 5 // number of context models for inter prediction direction #define NUM_MV_RES_CTX 2 // number of context models for motion vector difference #define NUM_REF_NO_CTX 2 // number of context models for reference index #define NUM_TRANS_SUBDIV_FLAG_CTX 3 // number of context models for transform subdivision flags #define NUM_QT_CBF_CTX 7 // number of context models for QT CBF #define NUM_QT_ROOT_CBF_CTX 1 // number of context models for QT ROOT CBF #define NUM_DELTA_QP_CTX 3 // number of context models for dQP #define NUM_SIG_CG_FLAG_CTX 2 // number of context models for MULTI_LEVEL_SIGNIFICANCE #define NUM_SIG_FLAG_CTX 42 // number of context models for sig flag #define NUM_SIG_FLAG_CTX_LUMA 27 // number of context models for luma sig flag #define NUM_SIG_FLAG_CTX_CHROMA 15 // number of context models for chroma sig flag #define NUM_CTX_LAST_FLAG_XY 18 // number of context models for last coefficient position #define NUM_CTX_LAST_FLAG_XY_LUMA 15 // number of context models for last coefficient position of luma #define NUM_CTX_LAST_FLAG_XY_CHROMA 3 // number of context models for last coefficient position of chroma #define NUM_ONE_FLAG_CTX 24 // number of context models for greater than 1 flag #define NUM_ONE_FLAG_CTX_LUMA 16 // number of context models for greater than 1 flag of luma #define NUM_ONE_FLAG_CTX_CHROMA 8 // number of context models for greater than 1 flag of chroma #define NUM_ABS_FLAG_CTX 6 // number of context models for greater than 2 flag #define NUM_ABS_FLAG_CTX_LUMA 4 // number of context models for greater than 2 flag of luma #define NUM_ABS_FLAG_CTX_CHROMA 2 // number of context models for greater than 2 flag of chroma #define NUM_MVP_IDX_CTX 1 // number of context models for MVP index #define NUM_SAO_MERGE_FLAG_CTX 1 // number of context models for SAO merge flags #define NUM_SAO_TYPE_IDX_CTX 1 // number of context models for SAO type index #define NUM_TRANSFORMSKIP_FLAG_CTX 1 // number of context models for transform skipping #define NUM_TQUANT_BYPASS_FLAG_CTX 1 #define CNU 154 // dummy initialization value for unused context models 'Context model Not Used' // Offset for context #define OFF_SPLIT_FLAG_CTX (0) #define OFF_SKIP_FLAG_CTX (OFF_SPLIT_FLAG_CTX + NUM_SPLIT_FLAG_CTX) #define OFF_MERGE_FLAG_EXT_CTX (OFF_SKIP_FLAG_CTX + NUM_SKIP_FLAG_CTX) #define OFF_MERGE_IDX_EXT_CTX (OFF_MERGE_FLAG_EXT_CTX + NUM_MERGE_FLAG_EXT_CTX) #define OFF_PART_SIZE_CTX (OFF_MERGE_IDX_EXT_CTX + NUM_MERGE_IDX_EXT_CTX) #define OFF_PRED_MODE_CTX (OFF_PART_SIZE_CTX + NUM_PART_SIZE_CTX) #define OFF_ADI_CTX (OFF_PRED_MODE_CTX + NUM_PRED_MODE_CTX) #define OFF_CHROMA_PRED_CTX (OFF_ADI_CTX + NUM_ADI_CTX) #define OFF_DELTA_QP_CTX (OFF_CHROMA_PRED_CTX + NUM_CHROMA_PRED_CTX) #define OFF_INTER_DIR_CTX (OFF_DELTA_QP_CTX + NUM_DELTA_QP_CTX) #define OFF_REF_NO_CTX (OFF_INTER_DIR_CTX + NUM_INTER_DIR_CTX) #define OFF_MV_RES_CTX (OFF_REF_NO_CTX + NUM_REF_NO_CTX) #define OFF_QT_CBF_CTX (OFF_MV_RES_CTX + NUM_MV_RES_CTX) #define OFF_TRANS_SUBDIV_FLAG_CTX (OFF_QT_CBF_CTX + NUM_QT_CBF_CTX) #define OFF_QT_ROOT_CBF_CTX (OFF_TRANS_SUBDIV_FLAG_CTX + NUM_TRANS_SUBDIV_FLAG_CTX) #define OFF_SIG_CG_FLAG_CTX (OFF_QT_ROOT_CBF_CTX + NUM_QT_ROOT_CBF_CTX) #define OFF_SIG_FLAG_CTX (OFF_SIG_CG_FLAG_CTX + 2 * NUM_SIG_CG_FLAG_CTX) #define OFF_CTX_LAST_FLAG_X (OFF_SIG_FLAG_CTX + NUM_SIG_FLAG_CTX) #define OFF_CTX_LAST_FLAG_Y (OFF_CTX_LAST_FLAG_X + NUM_CTX_LAST_FLAG_XY) #define OFF_ONE_FLAG_CTX (OFF_CTX_LAST_FLAG_Y + NUM_CTX_LAST_FLAG_XY) #define OFF_ABS_FLAG_CTX (OFF_ONE_FLAG_CTX + NUM_ONE_FLAG_CTX) #define OFF_MVP_IDX_CTX (OFF_ABS_FLAG_CTX + NUM_ABS_FLAG_CTX) #define OFF_SAO_MERGE_FLAG_CTX (OFF_MVP_IDX_CTX + NUM_MVP_IDX_CTX) #define OFF_SAO_TYPE_IDX_CTX (OFF_SAO_MERGE_FLAG_CTX + NUM_SAO_MERGE_FLAG_CTX) #define OFF_TRANSFORMSKIP_FLAG_CTX (OFF_SAO_TYPE_IDX_CTX + NUM_SAO_TYPE_IDX_CTX) #define OFF_TQUANT_BYPASS_FLAG_CTX (OFF_TRANSFORMSKIP_FLAG_CTX + 2 * NUM_TRANSFORMSKIP_FLAG_CTX) #define MAX_OFF_CTX_MOD (OFF_TQUANT_BYPASS_FLAG_CTX + NUM_TQUANT_BYPASS_FLAG_CTX) extern "C" const uint32_t PFX(entropyStateBits)[128]; namespace X265_NS { // private namespace extern const uint32_t g_entropyBits[128]; extern const uint8_t g_nextState[128][2]; #define sbacGetMps(S) ((S) & 1) #define sbacGetState(S) ((S) >> 1) #define sbacNext(S, V) (g_nextState[(S)][(V)]) #define sbacGetEntropyBits(S, V) (g_entropyBits[(S) ^ (V)]) #define sbacGetEntropyBitsTrm(V) (g_entropyBits[126 ^ (V)]) static const uint32_t ctxCbf[3][5] = { { 1, 0, 0, 0, 0 }, { 2, 3, 4, 5, 6 }, { 2, 3, 4, 5, 6 } }; } #endif // ifndef X265_CONTEXTS_H