| /****************************************************************************** |
| * |
| * Copyright (C) 2018 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 |
| * ihevc_rdoq_macros.h |
| * |
| * @brief |
| * Macros used for RDOQ algorthm |
| * |
| * @author |
| * Ittiam |
| * |
| * @remarks |
| * None |
| * |
| ******************************************************************************* |
| */ |
| #ifndef IHEVC_RDOQ_MACROS_H_ |
| #define IHEVC_RDOQ_MACROS_H_ |
| |
| /*****************************************************************************/ |
| /* Constant Macros */ |
| /*****************************************************************************/ |
| /*Used for calculating the distortion in the transform domain*/ |
| #define CALC_SSD_IN_TRANS_DOMAIN(a, b, i4_round_val, i4_shift_val) \ |
| (SHR_NEG(((((a) - (b)) * ((a) - (b))) + i4_round_val), i4_shift_val)) |
| #define CALC_CUMMUL_SSD_IN_TRANS_DOMAIN(a, b, i4_round_val, i4_shift_val) \ |
| (SHR_NEG((((a) - (b)) + i4_round_val), i4_shift_val)) |
| |
| #define MAX_INT 0x7FFFFFFF |
| |
| #define COMPUTE_RATE_COST_CLIP30_RDOQ(r, l, qshift) \ |
| ((WORD32)CLIP30((((ULWORD64)r) * ((ULWORD64)l)) >> (qshift))) |
| |
| /*This macro is required to test the RDOQ changes*/ |
| /*1 implies cabac context validation using the test-bench*/ |
| /*Also prints some debug information*/ |
| #define TEST_BENCH_RDOQ 0 |
| |
| /*Macro to enable and disable coefficient RDOQ. When 1, coefficient RDOQ is enabled*/ |
| #define COEFF_RDOQ 0 |
| |
| /*Macro to optimize the copying of cabac states across various temp/scratch cabac contexts |
| Should always be 0 when COEFF_RDOQ is 1*/ |
| #define OPT_MEMCPY 1 |
| |
| /** Macro which accounts subtracts 4096 bits from the total bits generated per TU in the RDOPT stage |
| if SBH is on*/ |
| #define ACCOUNT_SIGN_BITS 0 |
| |
| /*Macro defining the maximum number of context elements in the cabac state*/ |
| //#define MAX_NUM_CONTEXT_ELEMENTS 5 |
| |
| /*****************************************************************************/ |
| /* Enum */ |
| /*****************************************************************************/ |
| /*Enum to indicate which context element in the cabac state is currently being altered*/ |
| typedef enum |
| { |
| LASTXY, |
| SUB_BLK_CODED_FLAG, |
| SIG_COEFF, |
| GRTR_THAN_1, |
| GRTR_THAN_2, |
| MAX_NUM_CONTEXT_ELEMENTS |
| } BACKUP_CTXT_ELEMENTS; |
| |
| /*****************************************************************************/ |
| /* Structures */ |
| /*****************************************************************************/ |
| |
| /*Structure defined to optimize copying of cabac states across various temporary/scratch cabac states*/ |
| typedef struct |
| { |
| // clang-format off |
| /** |
| ai4_ctxt_to_backup[x] tells us if xth element has been altered. where |
| x context element Meaning |
| 0 IHEVC_CAB_COEFFX_PREFIX lastx last y has been coded |
| 1 IHEVC_CAB_CODED_SUBLK_IDX sub-blk coded or not flag has been coded |
| 2 IHEVC_CAB_COEFF_FLAG sigcoeff has been coded |
| 3 IHEVC_CAB_COEFABS_GRTR1_FLAG greater than 1 bin has been coded |
| 4 IHEVC_CAB_COEFABS_GRTR2_FLAG greater than 2 bin has been coded |
| */ |
| // clang-format on |
| UWORD8 au1_ctxt_to_backup[MAX_NUM_CONTEXT_ELEMENTS]; |
| |
| /** Number of bits generated */ |
| WORD32 i4_num_bits; |
| } backup_ctxt_t; |
| |
| /** |
| ****************************************************************************** |
| * @brief Structure to store the position of the coefficient to be changed |
| through SBH |
| ****************************************************************************** |
| */ |
| typedef struct |
| { |
| UWORD8 x; |
| UWORD8 y; |
| UWORD8 is_valid_pos; |
| WORD16 i2_old_coeff; |
| } s_sbh_coeff_pos_t; |
| |
| /** |
| ****************************************************************************** |
| * @brief RDOQ SBH context for cabac bit estimation etc |
| ****************************************************************************** |
| */ |
| |
| typedef struct |
| { |
| /** TU size */ |
| WORD32 i4_trans_size; |
| |
| /** Log 2 TU size */ |
| WORD32 i4_log2_trans_size; |
| |
| /** |
| * Boolean value representing if the current TU is luma or not. |
| * 1 => Luma |
| */ |
| WORD32 i4_is_luma; |
| |
| /** |
| * Calculate rounding and shifting values required for normalizing original |
| * and inverse quantized transform coefficients (for calculation of SSD in |
| * transform domain) |
| */ |
| WORD32 i4_round_val_ssd_in_td; |
| WORD32 i4_shift_val_ssd_in_td; |
| |
| /** Matrix used in inverse quantization */ |
| WORD32 quant_scale_mat_offset; |
| |
| /** Index of the csb within the TU*/ |
| WORD32 i4_trans_idx; |
| |
| /** value of lambda used in the D+Rlambda metric*/ |
| LWORD64 i8_cl_ssd_lambda_qf; |
| |
| /** Used while inverse quantizing*/ |
| WORD16 i2_qp_rem; |
| WORD32 i4_qp_div; |
| |
| /** Scan index of the csbs within the TU */ |
| WORD32 i4_scan_idx; |
| |
| /** Pointer to the csbf buf. This buffer will contain 1 if the csb is coded |
| * and 0 if it is not*/ |
| UWORD8 *pu1_csbf_buf; |
| |
| /** Boolean value which is 1 if any of the csbs in the current TU are |
| * coded*/ |
| UWORD8 i1_tu_is_coded; |
| |
| /** |
| * Pointer to an array of pointer to store the scaling matrices for |
| * all transform sizes and qp % 6 (pre computed) |
| */ |
| WORD16 *pi2_dequant_coeff; |
| |
| /** Pointer to the quantized coeffs*/ |
| WORD16 *pi2_quant_coeffs; |
| |
| /** Pointer to the inverse quantized values*/ |
| WORD16 *pi2_iquant_coeffs; |
| |
| /** Pointer ot the transformed values(before quantization) */ |
| WORD16 *pi2_trans_values; |
| |
| /** Stride of the inverse quant data*/ |
| WORD32 i4_iq_data_strd; |
| |
| /** Stride of the quant data*/ |
| WORD32 i4_q_data_strd; |
| |
| /** Intermediate array to store transform output for RDOQ*/ |
| WORD16 ai2_trans_values[MAX_TRANS_SIZE]; |
| |
| /** Pointer to zero rows and zero cols*/ |
| WORD32 *pi4_zero_row; |
| WORD32 *pi4_zero_col; |
| |
| /** Array containing information about the position of the coefficient |
| * to be altered during SBH |
| */ |
| s_sbh_coeff_pos_t s_best_pos[(MAX_TU_SIZE * MAX_TU_SIZE / 4 / 4) + 1]; |
| |
| /** SSD cost for this particular TU*/ |
| LWORD64 i8_ssd_cost; |
| |
| WORD32 i4_perform_all_cand_rdoq; |
| WORD32 i4_perform_best_cand_rdoq; |
| WORD32 i4_perform_all_cand_sbh; |
| WORD32 i4_perform_best_cand_sbh; |
| |
| WORD32 i4_bit_depth; |
| |
| WORD32 *pi4_subBlock2csbfId_map; |
| |
| } rdoq_sbh_ctxt_t; |
| |
| /*****************************************************************************/ |
| /* Extern Function Declarations */ |
| /*****************************************************************************/ |
| |
| void ihevce_sign_data_hiding(rdoq_sbh_ctxt_t *ps_rdoq_sbh_params); |
| |
| #endif /* IHEVC_RDOQ_MACROS_H_ */ |
