| /****************************************************************************** |
| * |
| * 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 ihevce_cabac_cu_pu.c |
| * |
| * @brief |
| * This file contains function definitions for cabac entropy coding of CU |
| * and PU structures in HEVC syntax |
| * |
| * @author |
| * ittiam |
| * |
| * @List of Functions |
| * ihevce_cabac_encode_intra_pu() |
| * ihevce_cabac_encode_skip_flag() |
| * ihevce_cabac_encode_part_mode() |
| * ihevce_cabac_encode_merge_idx() |
| * ihevce_cabac_encode_inter_pred_idc() |
| * ihevce_cabac_encode_refidx() |
| * ihevce_cabac_encode_mvd() |
| * ihevce_cabac_encode_inter_pu() |
| * ihevce_cabac_encode_coding_unit() |
| * ihevce_cabac_encode_sao() |
| * ihevce_encode_coding_quadtree() |
| * ihevce_encode_slice_data() |
| * |
| ****************************************************************************** |
| */ |
| |
| /*****************************************************************************/ |
| /* File Includes */ |
| /*****************************************************************************/ |
| /* System include files */ |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| #include <stdarg.h> |
| #include <math.h> |
| |
| /* User include files */ |
| #include "ihevc_typedefs.h" |
| #include "itt_video_api.h" |
| #include "ihevce_api.h" |
| |
| #include "rc_cntrl_param.h" |
| #include "rc_frame_info_collector.h" |
| #include "rc_look_ahead_params.h" |
| |
| #include "ihevc_defs.h" |
| #include "ihevc_structs.h" |
| #include "ihevc_platform_macros.h" |
| #include "ihevc_deblk.h" |
| #include "ihevc_itrans_recon.h" |
| #include "ihevc_chroma_itrans_recon.h" |
| #include "ihevc_chroma_intra_pred.h" |
| #include "ihevc_intra_pred.h" |
| #include "ihevc_inter_pred.h" |
| #include "ihevc_mem_fns.h" |
| #include "ihevc_padding.h" |
| #include "ihevc_weighted_pred.h" |
| #include "ihevc_sao.h" |
| #include "ihevc_resi_trans.h" |
| #include "ihevc_quant_iquant_ssd.h" |
| #include "ihevc_cabac_tables.h" |
| |
| #include "ihevce_defs.h" |
| #include "ihevce_lap_enc_structs.h" |
| #include "ihevce_multi_thrd_structs.h" |
| #include "ihevce_me_common_defs.h" |
| #include "ihevce_had_satd.h" |
| #include "ihevce_error_codes.h" |
| #include "ihevce_bitstream.h" |
| #include "ihevce_cabac.h" |
| #include "ihevce_rdoq_macros.h" |
| #include "ihevce_function_selector.h" |
| #include "ihevce_enc_structs.h" |
| #include "ihevce_entropy_structs.h" |
| #include "ihevce_cmn_utils_instr_set_router.h" |
| #include "ihevce_enc_loop_structs.h" |
| #include "ihevce_trace.h" |
| |
| #define TEST_CABAC_BITESTIMATE 0 |
| |
| // clang-format off |
| /** |
| ****************************************************************************** |
| * @brief LUT for binarization of inter partmode bins for cu size > mincu size |
| * as per Table9-34 of spec |
| * |
| * @input : amp_enable flag and part_mode |
| * |
| * @output : packed bins and count of bins as per following bit packed format |
| * Bins : (bits3-bit0) first bin starts from bit3 |
| * Bins Count: (bits7-bit4) |
| * 0xFF in the following table is invalid entry |
| * |
| * @remarks See Table 9-34 of HEVC spec for Binarization of part_mode |
| ******************************************************************************* |
| */ |
| #define INVALID 0xFF |
| const UWORD8 gu1_hevce_inter_part_mode_bins[2][8] = { |
| |
| /* cusize > minCUsize, no amp */ |
| { 0x18, 0x24, 0x20, INVALID, INVALID, INVALID, INVALID, INVALID, }, |
| |
| /* cusize > minCUsize, amp enable, minCUsize > 8 (irrelevant) */ |
| { 0x18, 0x36, 0x32, INVALID, 0x44, 0x45, 0x40, 0x41, }, |
| |
| }; |
| |
| /** |
| ****************************************************************************** |
| * @brief LUT for binarization of inter partmode bins for cu size = mincu size |
| * as per Table9-34 of spec |
| * |
| * @input : mincusize==8 flag and part_mode |
| * |
| * @output : packed bins and count of bins as per following bit packed format |
| * Bins : (bits3-bit0) first bin starts from bit3 |
| * Bins Count: (bits7-bit4) |
| * 0xFF in the following table is invalid entry |
| * |
| * @remarks See Table 9-34 of HEVC spec for Binarization of part_mode |
| ******************************************************************************* |
| */ |
| const UWORD8 gu1_hevce_inter_part_mode_bins_mincu[2][4] = { |
| |
| /* cusize == minCUsize, minCUsize > 8 */ |
| { 0x18, 0x24, 0x32, 0x30, }, |
| |
| /* cusize == minCUsize, minCUsize = 8 */ |
| { 0x18, 0x24, 0x20, INVALID }, |
| |
| }; |
| // clang-format on |
| |
| /*****************************************************************************/ |
| /* Function Definitions */ |
| /*****************************************************************************/ |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of luma and chroma intra pred modes |
| * |
| * @par Description |
| * Encodes prev_intra_ped_mode, mpm_idx and rem_intra_pred_mode for each |
| * luma partition and chrom intra pred of cu as per section:7.3.9.1 |
| * |
| * Binzarization, context model as per Table 9-32 for luma |
| * Binzarization, context model as per Table 9-35, section 9.3.2.8 for chroma |
| * |
| * @param[inout] ps_entropy_ctxt |
| * pointer to entropy context (handle) |
| * |
| * @param[in] part_mode |
| * indicates whether the mode is 2Nx2N or NxN luma parition |
| * |
| * @param[in] ps_enc_cu |
| * pointer to the intra cu whose luma and chroma pred modes are encoded |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_intra_pu( |
| entropy_context_t *ps_entropy_ctxt, WORD32 part_mode, cu_enc_loop_out_t *ps_enc_cu) |
| { |
| WORD32 error = IHEVCE_SUCCESS; |
| cab_ctxt_t *ps_cabac = &ps_entropy_ctxt->s_cabac_ctxt; |
| intra_prev_rem_flags_t *ps_prev_mpm_rem_flags = &ps_enc_cu->as_prev_rem[0]; |
| WORD32 i, num_parts; |
| |
| /* intra can only be 2Nx2N partition or a NxN partition */ |
| num_parts = (PART_NxN == part_mode) ? 4 : 1; |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| WORD32 cu_size = ps_enc_cu->b4_cu_size << 3; |
| |
| /*PIC_INFO : INTRA CU in frame*/ |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_intra_cu++; |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_pu += num_parts; |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_intra_pu += num_parts; |
| /*PIC_INFO : Total CU in frame based on cu size */ |
| |
| if(PART_2Nx2N == part_mode) |
| { |
| // clang-format off |
| if(cu_size == 64) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_2nx2n_intra_pu[3]++; |
| else |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_2nx2n_intra_pu[cu_size >> 4]++; |
| // clang-format on |
| } |
| else if(PART_NxN == part_mode) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_nxn_intra_pu++; |
| } |
| } |
| /* encode prev intra pred mode flags : context model based */ |
| for(i = 0; i < num_parts; i++) |
| { |
| WORD32 prev_intra_pred_flag = ps_prev_mpm_rem_flags[i].b1_prev_intra_luma_pred_flag; |
| error |= |
| ihevce_cabac_encode_bin(ps_cabac, prev_intra_pred_flag, IHEVC_CAB_INTRA_LUMA_PRED_FLAG); |
| AEV_TRACE("prev_intra_pred_luma_flag", prev_intra_pred_flag, ps_cabac->u4_range); |
| } |
| |
| /* encode mpm_idx or rem_intra_pred_mode bypass bins */ |
| for(i = 0; i < num_parts; i++) |
| { |
| if(ps_prev_mpm_rem_flags[i].b1_prev_intra_luma_pred_flag) |
| { |
| WORD32 mpm_idx = ps_prev_mpm_rem_flags[i].b2_mpm_idx; |
| |
| /* tunary bins for cmax = 2 */ |
| WORD32 num_bins = mpm_idx ? 2 : 1; |
| UWORD32 bins = mpm_idx ? ((1 << 1) | (mpm_idx - 1)) : 0; |
| |
| ASSERT(mpm_idx < 3); |
| |
| error |= ihevce_cabac_encode_bypass_bins(ps_cabac, bins, num_bins); |
| AEV_TRACE("mpm_idx", mpm_idx, ps_cabac->u4_range); |
| } |
| else |
| { |
| WORD32 rem_intra_pred_mode = ps_prev_mpm_rem_flags[i].b5_rem_intra_pred_mode; |
| error |= ihevce_cabac_encode_bypass_bins(ps_cabac, rem_intra_pred_mode, 5); |
| AEV_TRACE("rem_intra_luma_pred_mode", rem_intra_pred_mode, ps_cabac->u4_range); |
| } |
| } |
| |
| /************************************************************************/ |
| /* encode the chroma intra prediction mode as per Table 9-35 */ |
| /* First bin is context model based prefix : 0 if chroma_mode==4 else 1 */ |
| /* If chroma pred mode is not 4, suffix bins are coded as bypass bins */ |
| /************************************************************************/ |
| { |
| WORD32 chroma_pred_mode = ps_enc_cu->b3_chroma_intra_pred_mode; |
| WORD32 prefix_bin = (chroma_pred_mode == 4) ? 0 : 1; |
| |
| /* encode prefix bin */ |
| error |= ihevce_cabac_encode_bin(ps_cabac, prefix_bin, IHEVC_CAB_CHROMA_PRED_MODE); |
| |
| /* encode suffix bins */ |
| if(prefix_bin) |
| { |
| error |= ihevce_cabac_encode_bypass_bins(ps_cabac, chroma_pred_mode, 2); |
| } |
| AEV_TRACE("intra_chroma_pred_mode", chroma_pred_mode, ps_cabac->u4_range); |
| } |
| |
| return (error); |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of skip flag (Coding Unit syntax) |
| * |
| * @par Description |
| * context increment for skip flag is derived based on left and top skip flag |
| * as per section 9.3.3.1.1, Table 9-38 |
| * |
| * @param[inout] ps_entropy_ctxt |
| * pointer to entropy context (handle) |
| * |
| * @param[in] ps_enc_cu |
| * pointer to inter cu whose skip flag is to be coded |
| * |
| * @param[in] top_avail |
| * top availabilty flag for current cu (boolean) |
| * |
| * @param[in] left_avail |
| * left availabilty flag for current cu (boolean) |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_skip_flag( |
| entropy_context_t *ps_entropy_ctxt, |
| cu_enc_loop_out_t *ps_enc_cu, |
| WORD32 top_avail, |
| WORD32 left_avail) |
| |
| { |
| WORD32 error = IHEVCE_SUCCESS; |
| WORD32 skip_flag = ps_enc_cu->b1_skip_flag; |
| cab_ctxt_t *ps_cabac = &ps_entropy_ctxt->s_cabac_ctxt; |
| |
| /* CU top left co-ordinates w.r.t ctb */ |
| WORD32 cu_x0 = ps_enc_cu->b3_cu_pos_x << 3; |
| WORD32 cu_y0 = ps_enc_cu->b3_cu_pos_y << 3; |
| |
| /* CU size in pels */ |
| WORD32 cu_size = ps_enc_cu->b4_cu_size << 3; |
| |
| /* CU x co-ordinate w.r.t frame start */ |
| WORD32 ctb_x0_frm = (ps_entropy_ctxt->i4_ctb_x << ps_entropy_ctxt->i1_log2_ctb_size); |
| |
| WORD32 cu_x0_frm = cu_x0 + ctb_x0_frm; |
| |
| /* bit postion from where top skip flag is extracted; 1bit per 8 pel */ |
| WORD32 x_pos = ((cu_x0_frm >> 3) & 0x7); |
| |
| /* bit postion from where left skip flag is extracted; 1bit per 8 pel */ |
| WORD32 y_pos = ((cu_y0 >> 3) & 0x7); |
| |
| /* top and left skip flags computed based on nbr availability */ |
| UWORD8 *pu1_top_skip_flags = ps_entropy_ctxt->pu1_skip_cu_top + (cu_x0_frm >> 6); |
| UWORD32 u4_skip_left_flags = ps_entropy_ctxt->u4_skip_cu_left; |
| |
| /* context incerements based on top and left neigbours */ |
| UWORD32 ctxt_inc = 0; |
| |
| if(top_avail) |
| { |
| WORD32 val; |
| EXTRACT_BIT(val, pu1_top_skip_flags[0], x_pos); |
| ctxt_inc += val; |
| } |
| |
| if(left_avail) |
| { |
| WORD32 val; |
| EXTRACT_BIT(val, u4_skip_left_flags, y_pos); |
| ctxt_inc += val; |
| } |
| |
| if(CABAC_MODE_COMPUTE_BITS == ps_cabac->e_cabac_op_mode) |
| { |
| //ASSERT(ctxt_inc == ps_entropy_ctxt->i4_num_nbr_skip_cus); |
| ctxt_inc = ps_entropy_ctxt->i4_num_nbr_skip_cus; |
| ASSERT(ctxt_inc < 3); |
| ASSERT((WORD32)ctxt_inc <= (top_avail + left_avail)); |
| } |
| |
| /* encode the skip flag */ |
| error |= ihevce_cabac_encode_bin(ps_cabac, skip_flag, (IHEVC_CAB_SKIP_FLAG + ctxt_inc)); |
| |
| AEV_TRACE("cu_skip_flag", skip_flag, ps_cabac->u4_range); |
| |
| if(CABAC_MODE_ENCODE_BITS == ps_cabac->e_cabac_op_mode) |
| { |
| /* update top and left skip flags only in encode mode */ |
| if(skip_flag) |
| { |
| SET_BITS(pu1_top_skip_flags[0], x_pos, (cu_size >> 3)); |
| SET_BITS(u4_skip_left_flags, y_pos, (cu_size >> 3)); |
| } |
| else |
| { |
| CLEAR_BITS(pu1_top_skip_flags[0], x_pos, (cu_size >> 3)); |
| CLEAR_BITS(u4_skip_left_flags, y_pos, (cu_size >> 3)); |
| } |
| |
| ps_entropy_ctxt->u4_skip_cu_left = u4_skip_left_flags; |
| } |
| |
| return (error); |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of partition mode (Coding Unit syntax) |
| * |
| * @par Description |
| * Binarization process and context modelling of partition mode is done as per |
| * section 9.3.2.6 (Table 9-34) and se |
| * |
| * @param[inout] ps_cabac |
| * pointer to cabac encoding context (handle) |
| * |
| * @param[in] intra |
| * boolean indicating if current cu is intra cu |
| * |
| * @param[in] is_mincu |
| * boolean indicating if current cu size is equal to mincu |
| * |
| * @param[in] amp_enabled |
| * flag to indicate if AMP(Assymetric motion partition) is enabled at sps level |
| * |
| * @param[in] cu_eq_8 |
| * boolean indicating if current cu size is equal to 8 |
| * |
| * @param[in] part_mode |
| * partition mode of current CU |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_part_mode( |
| cab_ctxt_t *ps_cabac, |
| WORD32 intra, |
| WORD32 is_mincu, |
| WORD32 amp_enabled, |
| WORD32 cu_eq_8, |
| WORD32 part_mode) |
| { |
| /* Binarization depends on intra/inter, is_mincu, amp flag, cbsize == 8 */ |
| WORD32 bins; |
| WORD32 bin_count, i; |
| WORD32 error = IHEVCE_SUCCESS; |
| |
| (void)is_mincu; |
| (void)amp_enabled; |
| (void)cu_eq_8; |
| if(intra) |
| { |
| /* sanity checks for intra part mode */ |
| ASSERT(is_mincu); |
| ASSERT((part_mode == SIZE_NxN) || (part_mode == SIZE_2Nx2N)); |
| |
| bins = (part_mode == SIZE_2Nx2N) ? 1 : 0; |
| error |= ihevce_cabac_encode_bin(ps_cabac, bins, IHEVC_CAB_PART_MODE); |
| } |
| else |
| { |
| /* sanity checks for inter part mode....Too many but good to have */ |
| ASSERT((amp_enabled == 0) || (amp_enabled == 1)); |
| ASSERT((is_mincu == 0) || (is_mincu == 1)); |
| ASSERT((cu_eq_8 == 0) || (cu_eq_8 == 1)); |
| ASSERT((part_mode <= SIZE_nRx2N) && (part_mode >= SIZE_2Nx2N)); |
| if(!amp_enabled) |
| ASSERT(part_mode <= SIZE_NxN); |
| if(!is_mincu) |
| ASSERT(part_mode != SIZE_NxN); |
| if(is_mincu) |
| ASSERT(part_mode <= SIZE_NxN); |
| if(cu_eq_8) |
| ASSERT(part_mode < SIZE_NxN); |
| if(cu_eq_8) |
| ASSERT(is_mincu); |
| |
| /* look up table for bins and number of bins for inter pred mode */ |
| if(!is_mincu) |
| { |
| bins = gu1_hevce_inter_part_mode_bins[amp_enabled][part_mode]; |
| } |
| else |
| { |
| bins = gu1_hevce_inter_part_mode_bins_mincu[cu_eq_8][part_mode]; |
| } |
| |
| bin_count = (bins >> 4) & 0xF; |
| |
| /* Encode the context model based bins, max of 3 */ |
| for(i = 0; i < MIN(bin_count, 3); i++) |
| { |
| //TODO: HM-8.0-dev uses 0 context increment for bin2 (i===2) when amp is enabled |
| WORD32 ctxt_inc = IHEVC_CAB_PART_MODE + i; |
| WORD32 bin = (bins >> (3 - i)) & 0x1; |
| error |= ihevce_cabac_encode_bin(ps_cabac, bin, ctxt_inc); |
| } |
| |
| /* Encode the last bin as bypass bin for amp partitions */ |
| if(bin_count == 4) |
| { |
| error |= ihevce_cabac_encode_bypass_bin(ps_cabac, (bins & 0x1)); |
| } |
| } |
| AEV_TRACE("part_mode", part_mode, ps_cabac->u4_range); |
| return (error); |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of merge_idx of inter prediction unit as per sec |
| * as per sec 9.3.2 Table9-32. (tunary binarization) |
| * |
| * @par Description |
| * trunacted unary binarization is done based on max merge candidates |
| * First bin is context modelled bin and the rest are coded as bypass |
| * |
| * @param[inout] ps_cabac |
| * pointer to cabac encoding context (handle) |
| * |
| * @param[in] merge_idx |
| * merge idx of the pu to be encoded; |
| * |
| * @param[in] max_merge_cand |
| * maximum merge candidates signalled in the slice header* |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_merge_idx(cab_ctxt_t *ps_cabac, WORD32 merge_idx, WORD32 max_merge_cand) |
| { |
| WORD32 ret = IHEVCE_SUCCESS; |
| WORD32 ctxt_inc = IHEVC_CAB_MERGE_IDX_EXT; |
| |
| /* sanity checks */ |
| ASSERT((merge_idx >= 0) && (merge_idx < max_merge_cand)); |
| |
| /* encode the merge idx only if required */ |
| if(max_merge_cand > 1) |
| { |
| /* encode the context modelled first bin */ |
| ret |= ihevce_cabac_encode_bin(ps_cabac, (merge_idx > 0), ctxt_inc); |
| |
| /* encode the remaining bins as bypass tunary */ |
| if((max_merge_cand > 2) && (merge_idx > 0)) |
| { |
| ret |= |
| ihevce_cabac_encode_tunary_bypass(ps_cabac, (merge_idx - 1), (max_merge_cand - 2)); |
| } |
| |
| AEV_TRACE("merge_idx", merge_idx, ps_cabac->u4_range); |
| } |
| |
| return (ret); |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of inter_pred_idc for prediction unit of B slice as |
| * per sec 9.3.2.9 Table9-36 |
| * |
| * @par Description |
| * Max of two context modelled bins coded for pu size > 8x4 or 4x8 |
| * one context modelled bin coded for pu size = 8x4 or 4x8; bipred not allowed |
| * for 8x4 or 4x8. |
| * |
| * @param[inout] ps_cabac |
| * pointer to cabac encoding context (handle) |
| * |
| * @param[in] inter_pred_idc |
| * inter pred mode to be encoded; shall be PRED_L0 or PRED_L1 or PRED_BI |
| * |
| * @param[in] cu_depth |
| * depth of the cu to which current pu belongs (required for context increment) |
| * |
| * @param[in] pu_w_plus_pu_h |
| * required to check if pu_w_plus_pu_h is 12 (8x4PU or 4x8PU) |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_inter_pred_idc( |
| cab_ctxt_t *ps_cabac, WORD32 inter_pred_idc, WORD32 cu_depth, WORD32 pu_w_plus_pu_h) |
| { |
| WORD32 ret = IHEVCE_SUCCESS; |
| WORD32 ctxt_inc; |
| |
| ASSERT(inter_pred_idc <= PRED_BI); |
| |
| /* check if PU is 8x4/4x8 */ |
| if(pu_w_plus_pu_h == 12) |
| { |
| /* case of 8x4 or 4x8 where bi_pred is not allowed */ |
| ASSERT((inter_pred_idc == PRED_L0) || (inter_pred_idc == PRED_L1)); |
| |
| ctxt_inc = IHEVC_CAB_INTER_PRED_IDC + 4; |
| ret |= ihevce_cabac_encode_bin(ps_cabac, inter_pred_idc, ctxt_inc); |
| } |
| else |
| { |
| /* larger PUs can be encoded as bi_pred/l0/l1 inter_pred_idc */ |
| WORD32 is_bipred = (inter_pred_idc == PRED_BI); |
| |
| ctxt_inc = IHEVC_CAB_INTER_PRED_IDC + cu_depth; |
| ret |= ihevce_cabac_encode_bin(ps_cabac, is_bipred, ctxt_inc); |
| |
| if(!is_bipred) |
| { |
| ctxt_inc = IHEVC_CAB_INTER_PRED_IDC + 4; |
| ret |= ihevce_cabac_encode_bin(ps_cabac, inter_pred_idc, ctxt_inc); |
| } |
| } |
| |
| AEV_TRACE("inter_pred_idc", inter_pred_idc, ps_cabac->u4_range); |
| |
| return (ret); |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of refidx for prediction unit; Binarization done as |
| * tunary code as per sec 9.3.2 Table9-32 |
| * |
| * @par Description |
| * First two bins are context modelled while the rest are coded as bypass |
| * |
| * @param[inout] ps_cabac |
| * pointer to cabac encoding context (handle) |
| * |
| * @param[in] ref_idx |
| * ref idx of partition unit |
| * |
| * @param[in] active_refs |
| * max number of active references signalled in slice header |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_refidx(cab_ctxt_t *ps_cabac, WORD32 ref_idx, WORD32 active_refs) |
| { |
| /************************************************************/ |
| /* encode ref_idx as tunary binarization Table 9-32 */ |
| /* First 2 bin use context model and rest coded as bypass */ |
| /************************************************************/ |
| WORD32 ret = IHEVCE_SUCCESS; |
| WORD32 ctxt_inc = IHEVC_CAB_INTER_REF_IDX; |
| |
| /* sanity checks */ |
| ASSERT((ref_idx >= 0) && (ref_idx < active_refs)); |
| |
| /* encode the ref idx only if required */ |
| if(active_refs > 1) |
| { |
| /* encode the context modelled first bin */ |
| ret |= ihevce_cabac_encode_bin(ps_cabac, (ref_idx > 0), ctxt_inc); |
| |
| if((active_refs > 2) && (ref_idx > 0)) |
| { |
| /* encode the context modelled second bin */ |
| ctxt_inc++; |
| ret |= ihevce_cabac_encode_bin(ps_cabac, (ref_idx > 1), ctxt_inc); |
| } |
| |
| if((active_refs > 3) && (ref_idx > 1)) |
| { |
| /* encode remaining bypass bins */ |
| ret |= ihevce_cabac_encode_tunary_bypass(ps_cabac, (ref_idx - 2), (active_refs - 3)); |
| } |
| |
| AEV_TRACE("ref_idx", ref_idx, ps_cabac->u4_range); |
| } |
| |
| return (ret); |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of mvd for inter pu as per section 7.3.10.2 |
| * |
| * @par Description |
| * syntax coded as per section 7.3.10.2 for mvdx and mvdy |
| * context modeling of abs_mvd_greater0 abs_mvd_greater1 done as per Table 9-32 |
| * binazrization of abs_mvd_minus2 is done as done as EG1 code section 9.3.2.4 |
| * |
| * @param[inout] ps_cabac |
| * pointer to cabac encoding context (handle) |
| * |
| * @param[in] ps_mvd |
| * pointer to mvd struct containing mvdx and mvdy |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_mvd(cab_ctxt_t *ps_cabac, mv_t *ps_mvd) |
| { |
| WORD32 ret = IHEVCE_SUCCESS; |
| WORD32 mvd_x = ps_mvd->i2_mvx; |
| WORD32 mvd_y = ps_mvd->i2_mvy; |
| |
| WORD32 abs_mvd_x = ABS(mvd_x); |
| WORD32 abs_mvd_y = ABS(mvd_y); |
| |
| WORD32 abs_mvd_x_gt0 = abs_mvd_x > 0; |
| WORD32 abs_mvd_y_gt0 = abs_mvd_y > 0; |
| |
| WORD32 abs_mvd_x_gt1 = abs_mvd_x > 1; |
| WORD32 abs_mvd_y_gt1 = abs_mvd_y > 1; |
| |
| WORD32 ctxt_inc = IHEVC_CAB_MVD_GRT0; |
| |
| /* encode absmvd_x > 0 */ |
| ret |= ihevce_cabac_encode_bin(ps_cabac, abs_mvd_x_gt0, ctxt_inc); |
| AEV_TRACE("abs_mvd_greater0_flag[0]", abs_mvd_x_gt0, ps_cabac->u4_range); |
| |
| /* encode absmvd_y > 0 */ |
| ret |= ihevce_cabac_encode_bin(ps_cabac, abs_mvd_y_gt0, ctxt_inc); |
| AEV_TRACE("abs_mvd_greater0_flag[1]", abs_mvd_y_gt0, ps_cabac->u4_range); |
| |
| ctxt_inc = IHEVC_CAB_MVD_GRT1; |
| |
| /* encode abs_mvd_x > 1 iff (abs_mvd_x > 0) */ |
| if(abs_mvd_x_gt0) |
| { |
| ret |= ihevce_cabac_encode_bin(ps_cabac, abs_mvd_x_gt1, ctxt_inc); |
| AEV_TRACE("abs_mvd_greater1_flag[0]", abs_mvd_x_gt1, ps_cabac->u4_range); |
| } |
| |
| /* encode abs_mvd_y > 1 iff (abs_mvd_y > 0) */ |
| if(abs_mvd_y_gt0) |
| { |
| ret |= ihevce_cabac_encode_bin(ps_cabac, abs_mvd_y_gt1, ctxt_inc); |
| AEV_TRACE("abs_mvd_greater1_flag[1]", abs_mvd_y_gt1, ps_cabac->u4_range); |
| } |
| |
| /* encode abs_mvd_x - 2 iff (abs_mvd_x > 1) */ |
| if(abs_mvd_x_gt1) |
| { |
| ret |= ihevce_cabac_encode_egk(ps_cabac, (abs_mvd_x - 2), 1); |
| AEV_TRACE("abs_mvd_minus2[0]", (abs_mvd_x - 2), ps_cabac->u4_range); |
| } |
| |
| /* encode mvd_x sign iff (abs_mvd_x > 0) */ |
| if(abs_mvd_x_gt0) |
| { |
| ret |= ihevce_cabac_encode_bypass_bin(ps_cabac, (mvd_x < 0)); |
| AEV_TRACE("mvd_sign_flag[0]", (mvd_x < 0), ps_cabac->u4_range); |
| } |
| |
| /* encode abs_mvd_y - 2 iff (abs_mvd_y > 1) */ |
| if(abs_mvd_y_gt1) |
| { |
| ret |= ihevce_cabac_encode_egk(ps_cabac, (abs_mvd_y - 2), 1); |
| AEV_TRACE("abs_mvd_minus2[1]", (abs_mvd_y - 2), ps_cabac->u4_range); |
| } |
| |
| /* encode mvd_y sign iff (abs_mvd_y > 0) */ |
| if(abs_mvd_y_gt0) |
| { |
| ret |= ihevce_cabac_encode_bypass_bin(ps_cabac, (mvd_y < 0)); |
| AEV_TRACE("mvd_sign_flag[1]", (mvd_y < 0), ps_cabac->u4_range); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of all syntax elements of inter PUs in a CU |
| * |
| * @par Description |
| * syntax coded as per section 7.3.10.1 for inter prediction unit |
| * |
| * @param[inout] ps_entropy_ctxt |
| * pointer to entropy context (handle) |
| * |
| * @param[in] ps_enc_cu |
| * pointer to current cu whose inter prediction units are to be encoded |
| * |
| * @param[in] cu_depth |
| * depth of the the current cu in coding tree |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_inter_pu( |
| entropy_context_t *ps_entropy_ctxt, cu_enc_loop_out_t *ps_enc_cu, WORD32 cu_depth) |
| { |
| WORD32 ret = IHEVCE_SUCCESS; |
| |
| slice_header_t *ps_slice_hdr = ps_entropy_ctxt->ps_slice_hdr; |
| cab_ctxt_t *ps_cabac = &ps_entropy_ctxt->s_cabac_ctxt; |
| pu_t *ps_pu = ps_enc_cu->ps_pu; |
| |
| WORD32 merge_idx = ps_pu->b3_merge_idx; |
| WORD32 max_merge_cand = ps_slice_hdr->i1_max_num_merge_cand; |
| WORD32 ctxt_inc; |
| |
| if(ps_enc_cu->b1_skip_flag) |
| { |
| WORD32 cu_size = ps_enc_cu->b4_cu_size << 3; |
| /*PIC_INFO : SKIP CU in frame*/ |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_skip_cu++; |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_pu++; |
| if(cu_size == 64) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_2nx2n_inter_pu[3]++; |
| else |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_2nx2n_inter_pu[cu_size >> 4]++; |
| } |
| /* encode the merge idx for skip cu and return */ |
| ret |= ihevce_cabac_encode_merge_idx(ps_cabac, merge_idx, max_merge_cand); |
| } |
| else |
| { |
| /* MODE_INTER */ |
| WORD32 part_mode = ps_enc_cu->b3_part_mode; |
| WORD32 num_parts, i; |
| |
| num_parts = (part_mode == SIZE_2Nx2N) ? 1 : ((part_mode == SIZE_NxN) ? 4 : 2); |
| |
| /*PIC_INFO : INTER CU in frame*/ |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| WORD32 cu_size = ps_enc_cu->b4_cu_size << 3; |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_inter_cu++; |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_pu += num_parts; |
| |
| // clang-format off |
| if(PART_2Nx2N == part_mode) |
| { |
| if(cu_size == 64) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_2nx2n_inter_pu[3]++; |
| else |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_2nx2n_inter_pu[cu_size >> 4]++; |
| } |
| else if((PART_2NxN == part_mode) || (PART_Nx2N == part_mode)) |
| { |
| if(cu_size == 64) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_smp_inter_pu[3]++; |
| else |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_smp_inter_pu[cu_size >> 4]++; |
| } |
| else if((PART_2NxnU == part_mode) || (PART_2NxnD == part_mode) || |
| (PART_nLx2N == part_mode) || (PART_nRx2N == part_mode)) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_amp_inter_pu[cu_size >> 5]++; |
| } |
| else |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_nxn_inter_pu[cu_size >> 5]++; |
| } |
| // clang-format on |
| } |
| |
| /* encode each pu partition */ |
| for(i = 0; i < num_parts; i++) |
| { |
| /* encode the merge flag context modelled bin */ |
| WORD32 merge_flag; |
| UWORD32 u4_bits_estimated_merge_flag = 0; |
| ps_pu = ps_enc_cu->ps_pu + i; |
| |
| /* encode the merge flag context modelled bin */ |
| merge_flag = ps_pu->b1_merge_flag; |
| u4_bits_estimated_merge_flag = ps_cabac->u4_bits_estimated_q12; |
| ctxt_inc = IHEVC_CAB_MERGE_FLAG_EXT; |
| ret |= ihevce_cabac_encode_bin(ps_cabac, merge_flag, ctxt_inc); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| // clang-format off |
| /*PIC INFO : Populate merge flag */ |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_merge_flag = |
| (ps_cabac->u4_bits_estimated_q12 - |
| u4_bits_estimated_merge_flag); |
| // clang-format on |
| } |
| AEV_TRACE("merge_flag", merge_flag, ps_cabac->u4_range); |
| |
| if(merge_flag) |
| { |
| merge_idx = ps_pu->b3_merge_idx; |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_merge_pu++; |
| /* encode the merge idx for the pu */ |
| ret |= ihevce_cabac_encode_merge_idx(ps_cabac, merge_idx, max_merge_cand); |
| } |
| else |
| { |
| /* encode the inter_pred_idc, ref_idx and mvd */ |
| WORD32 inter_pred_idc = ps_pu->b2_pred_mode; |
| WORD32 ref_l0_active = ps_slice_hdr->i1_num_ref_idx_l0_active; |
| WORD32 ref_l1_active = ps_slice_hdr->i1_num_ref_idx_l1_active; |
| |
| /*PIC_INFO : L0 L1 BI ro r1.. in frame*/ |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_non_skipped_inter_pu++; |
| // clang-format off |
| if(inter_pred_idc == PRED_L0) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_L0_mode++; |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_L0_ref_idx[ps_pu->mv.i1_l0_ref_idx]++; |
| } |
| else if(inter_pred_idc == PRED_L1) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_L1_mode++; |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_L1_ref_idx[ps_pu->mv.i1_l1_ref_idx]++; |
| } |
| else if(inter_pred_idc == PRED_BI) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_BI_mode++; |
| if(inter_pred_idc != PRED_L1) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_L0_ref_idx[ps_pu->mv.i1_l0_ref_idx]++; |
| if(inter_pred_idc != PRED_L0) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_L1_ref_idx[ps_pu->mv.i1_l1_ref_idx]++; |
| } |
| // clang-format on |
| } |
| if(ps_slice_hdr->i1_slice_type == BSLICE) |
| { |
| /* Encode inter_pred_idc as per sec 9.3.2.9 Table9-36 */ |
| WORD32 pu_w_plus_pu_h; |
| WORD32 inter_pred_idc = ps_pu->b2_pred_mode; |
| |
| /* required to check if w+h==12 case */ |
| pu_w_plus_pu_h = ((ps_pu->b4_wd + 1) << 2) + ((ps_pu->b4_ht + 1) << 2); |
| |
| ret |= ihevce_cabac_encode_inter_pred_idc( |
| ps_cabac, inter_pred_idc, cu_depth, pu_w_plus_pu_h); |
| } |
| else |
| { |
| ASSERT(inter_pred_idc == 0); |
| } |
| |
| /* Decode ref idx and mvd for L0 (PRED_L0 or PRED_BI) */ |
| if(inter_pred_idc != PRED_L1) |
| { |
| UWORD32 u4_bits_estimated_prev_mvd_ref_id; |
| /* encode L0 ref_idx */ |
| WORD32 ref_idx_l0 = ps_pu->mv.i1_l0_ref_idx; |
| |
| /*PIC INFO : Populate Ref Indx L0 Bits*/ |
| u4_bits_estimated_prev_mvd_ref_id = ps_cabac->u4_bits_estimated_q12; |
| ret |= ihevce_cabac_encode_refidx(ps_cabac, ref_idx_l0, ref_l0_active); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| // clang-format off |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_ref_id += |
| (ps_cabac->u4_bits_estimated_q12 - |
| u4_bits_estimated_prev_mvd_ref_id); |
| // clang-format on |
| } |
| /* Encode the mvd for L0 */ |
| /*PIC INFO : Populate MVD Bits*/ |
| u4_bits_estimated_prev_mvd_ref_id = ps_cabac->u4_bits_estimated_q12; |
| |
| ret |= ihevce_cabac_encode_mvd(ps_cabac, &ps_pu->mv.s_l0_mv); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { // clang-format off |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_mvd += |
| (ps_cabac->u4_bits_estimated_q12 - |
| u4_bits_estimated_prev_mvd_ref_id); |
| // clang-format on |
| } |
| |
| /* Encode the mvp_l0_flag */ |
| ctxt_inc = IHEVC_CAB_MVP_L0L1; |
| ret |= ihevce_cabac_encode_bin(ps_cabac, ps_pu->b1_l0_mvp_idx, ctxt_inc); |
| |
| AEV_TRACE("mvp_l0/l1_flag", ps_pu->b1_l0_mvp_idx, ps_cabac->u4_range); |
| } |
| |
| /* Encode ref idx and MVD for L1 (PRED_L1 or PRED_BI) */ |
| if(inter_pred_idc != PRED_L0) |
| { |
| /* encode L1 ref_idx */ |
| WORD32 ref_idx_l1 = ps_pu->mv.i1_l1_ref_idx; |
| |
| UWORD32 u4_bits_estimated_prev_mvd_ref_id; |
| /*PIC INFO : Populate Ref Indx L1 Bits*/ |
| u4_bits_estimated_prev_mvd_ref_id = ps_cabac->u4_bits_estimated_q12; |
| |
| ret |= ihevce_cabac_encode_refidx(ps_cabac, ref_idx_l1, ref_l1_active); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { // clang-format off |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_ref_id += |
| (ps_cabac->u4_bits_estimated_q12 - |
| u4_bits_estimated_prev_mvd_ref_id); |
| } // clang-format on |
| |
| /* Check for zero mvd in case of bi_pred */ |
| if(ps_slice_hdr->i1_mvd_l1_zero_flag && inter_pred_idc == PRED_BI) |
| { |
| ASSERT(ps_pu->mv.s_l1_mv.i2_mvx == 0); |
| ASSERT(ps_pu->mv.s_l1_mv.i2_mvy == 0); |
| } |
| else |
| { |
| /* Encode the mvd for L1 */ |
| /*PIC INFO : Populate MVD Bits*/ |
| u4_bits_estimated_prev_mvd_ref_id = ps_cabac->u4_bits_estimated_q12; |
| |
| /* Encode the mvd for L1 */ |
| ret |= ihevce_cabac_encode_mvd(ps_cabac, &ps_pu->mv.s_l1_mv); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_mvd += |
| (ps_cabac->u4_bits_estimated_q12 - |
| u4_bits_estimated_prev_mvd_ref_id); |
| } |
| } |
| |
| /* Encode the mvp_l1_flag */ |
| ctxt_inc = IHEVC_CAB_MVP_L0L1; |
| ret |= ihevce_cabac_encode_bin(ps_cabac, ps_pu->b1_l1_mvp_idx, ctxt_inc); |
| |
| AEV_TRACE("mvp_l0/l1_flag", ps_pu->b1_l1_mvp_idx, ps_cabac->u4_range); |
| } |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of coding unit (Coding Unit syntax) |
| * |
| * @par Description |
| * Entropy encode of coding unit (Coding Unit syntax) as per section:7.3.9.1 |
| * General Coding unit syntax |
| * |
| * @param[inout] ps_entropy_ctxt |
| * pointer to entropy context (handle) |
| * |
| * @param[in] ps_enc_cu |
| * pointer to current cu whose entropy encode is done |
| * |
| * @param[in] cu_depth |
| * depth of the the current cu in coding tree |
| * |
| * @param[in] top_avail |
| * top availabilty flag for current cu (boolean) |
| * |
| * @param[in] left_avail |
| * left availabilty flag for current cu (boolean) |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_coding_unit( |
| entropy_context_t *ps_entropy_ctxt, |
| cu_enc_loop_out_t *ps_enc_cu, |
| WORD32 cu_depth, |
| WORD32 top_avail, |
| WORD32 left_avail) |
| { |
| WORD32 ret = IHEVCE_SUCCESS; |
| sps_t *ps_sps = ps_entropy_ctxt->ps_sps; |
| pps_t *ps_pps = ps_entropy_ctxt->ps_pps; |
| slice_header_t *ps_slice_hdr = ps_entropy_ctxt->ps_slice_hdr; |
| |
| WORD32 skip_flag = 0; |
| WORD32 no_res_flag = 0; |
| |
| /* CU top left co-ordinates w.r.t ctb */ |
| WORD32 cu_x0 = ps_enc_cu->b3_cu_pos_x << 3; |
| WORD32 cu_y0 = ps_enc_cu->b3_cu_pos_y << 3; |
| |
| /* CU size in pels */ |
| WORD32 cu_size = ps_enc_cu->b4_cu_size << 3; |
| WORD32 log2_cb_size; |
| |
| cab_ctxt_t *ps_cabac = &ps_entropy_ctxt->s_cabac_ctxt; |
| |
| UWORD32 u4_header_bits_temp = ps_cabac->u4_bits_estimated_q12; |
| |
| (void)cu_depth; |
| (void)top_avail; |
| (void)left_avail; |
| /* Sanity checks */ |
| ASSERT((cu_x0 + cu_size) <= (1 << ps_entropy_ctxt->i1_log2_ctb_size)); |
| ASSERT((cu_y0 + cu_size) <= (1 << ps_entropy_ctxt->i1_log2_ctb_size)); |
| |
| /* code tq bypass flag */ |
| ASSERT(ps_pps->i1_transquant_bypass_enable_flag == 0); |
| |
| /* log2_cb_size based on cu size */ |
| GETRANGE(log2_cb_size, cu_size); |
| log2_cb_size -= 1; |
| |
| if(ps_pps->i1_transquant_bypass_enable_flag) |
| { |
| ihevce_cabac_encode_bin( |
| ps_cabac, ps_enc_cu->b1_tq_bypass_flag, IHEVC_CAB_CU_TQ_BYPASS_FLAG); |
| |
| AEV_TRACE("cu_transquant_bypass_flag", ps_enc_cu->b1_tq_bypass_flag, ps_cabac->u4_range); |
| } |
| /* code the skip flag for inter slices */ |
| if(ps_slice_hdr->i1_slice_type != ISLICE) |
| { |
| skip_flag = ps_enc_cu->b1_skip_flag; |
| |
| ret |= ihevce_cabac_encode_skip_flag(ps_entropy_ctxt, ps_enc_cu, top_avail, left_avail); |
| } |
| /*PIC_INFO : Total CU in frame based on cu size */ |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| // clang-format off |
| if(cu_size == 64) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_cu_based_on_size[3]++; |
| else |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_cu_based_on_size[cu_size >> 4]++; |
| // clang-format on |
| } |
| if(skip_flag) |
| { |
| /* encode merge idx for the skip cu */ |
| ret |= ihevce_cabac_encode_inter_pu(ps_entropy_ctxt, ps_enc_cu, cu_depth); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| /*PIC INFO: Populated non-coded TUs in CU*/ |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_non_coded_tu += |
| ps_enc_cu->u2_num_tus_in_cu; |
| // clang-format off |
| if(cu_size == 64) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_tu_based_on_size[3] += |
| ps_enc_cu->u2_num_tus_in_cu; |
| else if(cu_size == 32) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_tu_based_on_size[3] += |
| ps_enc_cu->u2_num_tus_in_cu; |
| else |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_tu_based_on_size[cu_size >> 3] += |
| ps_enc_cu->u2_num_tus_in_cu; |
| // clang-format on |
| |
| /*PIC INFO: Populate cu header bits*/ |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_cu_hdr_bits += |
| (ps_cabac->u4_bits_estimated_q12 - u4_header_bits_temp); |
| } |
| } |
| else |
| { |
| WORD32 pred_mode = PRED_MODE_INTRA; |
| WORD32 part_mode = ps_enc_cu->b3_part_mode; |
| WORD32 pcm_flag = ps_enc_cu->b1_pcm_flag; |
| WORD32 is_mincu; |
| WORD32 is_intra; |
| |
| is_mincu = (cu_size == (1 << ps_sps->i1_log2_min_coding_block_size)); |
| /* encode pred mode flag for inter slice */ |
| if(ps_slice_hdr->i1_slice_type != ISLICE) |
| { |
| pred_mode = ps_enc_cu->b1_pred_mode_flag; |
| |
| ret |= ihevce_cabac_encode_bin(ps_cabac, pred_mode, IHEVC_CAB_PRED_MODE); |
| |
| AEV_TRACE("pred_mode_flag", pred_mode, ps_cabac->u4_range); |
| } |
| is_intra = (PRED_MODE_INTRA == pred_mode); |
| |
| /* encode partition mode for inter pred or smallest intra pred cu */ |
| if((!is_intra) || is_mincu) |
| { |
| WORD32 amp_enabled = ps_sps->i1_amp_enabled_flag; |
| WORD32 cusize_8 = (cu_size == 8); |
| |
| ret |= ihevce_cabac_encode_part_mode( |
| ps_cabac, is_intra, is_mincu, amp_enabled, cusize_8, part_mode); |
| } |
| else |
| { |
| ASSERT(part_mode == SIZE_2Nx2N); |
| } |
| |
| /* encode intra / inter pu modes of the current CU */ |
| if(is_intra) |
| { |
| /* NOTE: I_PCM not supported in encoder */ |
| ASSERT(0 == pcm_flag); |
| ASSERT(0 == ps_sps->i1_pcm_enabled_flag); |
| |
| ret |= ihevce_cabac_encode_intra_pu(ps_entropy_ctxt, part_mode, ps_enc_cu); |
| } |
| else |
| { |
| ret |= ihevce_cabac_encode_inter_pu(ps_entropy_ctxt, ps_enc_cu, cu_depth); |
| } |
| /* encode no residue syntax flag and transform tree conditionally */ |
| if(!pcm_flag) |
| { |
| pu_t *ps_pu = &ps_enc_cu->ps_pu[0]; |
| WORD32 merge_cu; |
| /* Encode residue syntax flag for inter cus not merged as 2Nx2N */ |
| if(!is_intra) |
| merge_cu = (part_mode == PART_2Nx2N) && ps_pu->b1_merge_flag; |
| |
| if(!is_intra && !merge_cu) |
| { |
| no_res_flag = ps_enc_cu->b1_no_residual_syntax_flag; |
| |
| #if 1 /* HACK FOR COMPLIANCE WITH HM REFERENCE DECODER */ |
| /*********************************************************/ |
| /* currently the HM decoder expects qtroot cbf instead of */ |
| /* no_residue_flag which has opposite meaning */ |
| /* This will be fixed once the software / spec is fixed */ |
| /*********************************************************/ |
| ret |= ihevce_cabac_encode_bin(ps_cabac, !no_res_flag, IHEVC_CAB_NORES_IDX); |
| |
| AEV_TRACE("no_residual_syntax_flag (HACKY)", !no_res_flag, ps_cabac->u4_range); |
| #else |
| ret |= ihevce_cabac_encode_bin(ps_cabac, no_res_flag, IHEVC_CAB_NORES_IDX); |
| |
| AEV_TRACE("no_residual_syntax_flag", no_res_flag, ps_cabac->u4_range); |
| #endif |
| } |
| /*initialize header bits*/ |
| ps_cabac->u4_header_bits_estimated_q12 = ps_cabac->u4_bits_estimated_q12; |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { // clang-format off |
| /*PIC INFO: Populate cu header bits*/ |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_cu_hdr_bits += |
| (ps_cabac->u4_bits_estimated_q12 - u4_header_bits_temp); |
| } // clang-format on |
| |
| ps_cabac->u4_true_tu_split_flag_q12 = 0; |
| /* encode transform tree if no_residue_flag is 0 */ |
| if(!no_res_flag) |
| { |
| ps_entropy_ctxt->i4_tu_idx = 0; |
| |
| ret |= ihevce_encode_transform_tree( |
| ps_entropy_ctxt, cu_x0, cu_y0, log2_cb_size, 0, 0, ps_enc_cu); |
| } |
| else |
| { |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| /*PIC INFO: Populated non-coded TUs in CU*/ |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_non_coded_tu += |
| ps_enc_cu->u2_num_tus_in_cu; |
| // clang-format off |
| if(cu_size == 64) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_tu_based_on_size[3] += |
| ps_enc_cu->u2_num_tus_in_cu; |
| else if(cu_size == 32) |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_tu_based_on_size[3] += |
| ps_enc_cu->u2_num_tus_in_cu; |
| else |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_tu_based_on_size[cu_size >> 3] += |
| ps_enc_cu->u2_num_tus_in_cu; |
| // clang-format on |
| } |
| } |
| ps_cabac->u4_cbf_bits_q12 = ps_cabac->u4_bits_estimated_q12 - |
| ps_cabac->u4_header_bits_estimated_q12 - |
| ps_cabac->u4_true_tu_split_flag_q12; |
| } |
| } |
| |
| /*duplicate the qp values for 8x8 CU array to maintain neighbour qp*/ |
| if(CABAC_MODE_ENCODE_BITS == ps_entropy_ctxt->s_cabac_ctxt.e_cabac_op_mode) |
| { |
| WORD32 i, j; |
| WORD32 cur_cu_offset, cur_qp, qp_left, qp_top; |
| WORD32 is_last_blk_in_qg; |
| /* CU x co-ordinate w.r.t frame start */ |
| WORD32 ctb_x0_frm = (ps_entropy_ctxt->i4_ctb_x << ps_entropy_ctxt->i1_log2_ctb_size); |
| |
| WORD32 cu_x0_frm = cu_x0 + ctb_x0_frm; |
| |
| /* CU y co-ordinate w.r.t frame start */ |
| WORD32 ctb_y0_frm = (ps_entropy_ctxt->i4_ctb_y << ps_entropy_ctxt->i1_log2_ctb_size); |
| |
| WORD32 cu_y0_frm = cu_y0 + ctb_y0_frm; |
| |
| WORD32 pic_width = ps_sps->i2_pic_width_in_luma_samples; |
| WORD32 pic_height = ps_sps->i2_pic_height_in_luma_samples; |
| |
| /* Added code for handling the QP neighbour population depending |
| on the diff_cu_qp_delta_depth: Lokesh */ |
| /* is_last_blk_in_qg variables is to find if the coding block is the last CU in the Quantization group |
| 3 - i1_diff_cu_qp_delta_depth is done as the cu_pos_x and cu_pos_y are in terms of 8x8 positions in the CTB: Lokesh*/ |
| WORD32 log2_min_cu_qp_delta_size = |
| ps_entropy_ctxt->i1_log2_ctb_size - ps_entropy_ctxt->ps_pps->i1_diff_cu_qp_delta_depth; |
| UWORD32 min_cu_qp_delta_size = 1 << log2_min_cu_qp_delta_size; |
| |
| WORD32 block_addr_align = 15 << (log2_min_cu_qp_delta_size - 3); |
| |
| ps_entropy_ctxt->i4_qg_pos_x = ps_enc_cu->b3_cu_pos_x & block_addr_align; |
| ps_entropy_ctxt->i4_qg_pos_y = ps_enc_cu->b3_cu_pos_y & block_addr_align; |
| |
| /* Condition for detecting last cu in a qp group. */ |
| /* Case 1: Current cu position + size exceed or meets the next qp group start location */ |
| /* Case 2: Current cu position + size hits the incomplete ctb boundary in atleast one */ |
| /* direction and the qp grp limit in other direction */ |
| |
| /* case 1 */ |
| is_last_blk_in_qg = |
| ((cu_x0 + cu_size) >= |
| ((ps_entropy_ctxt->i4_qg_pos_x << 3) + (WORD32)min_cu_qp_delta_size) && |
| (cu_y0 + cu_size) >= |
| ((ps_entropy_ctxt->i4_qg_pos_y << 3) + (WORD32)min_cu_qp_delta_size)); |
| |
| /* case 2 : x direction incomplete ctb */ |
| if((cu_x0_frm + cu_size) >= pic_width) |
| { |
| is_last_blk_in_qg |= |
| ((cu_y0 + cu_size) >= |
| ((ps_entropy_ctxt->i4_qg_pos_y << 3) + (WORD32)min_cu_qp_delta_size)); |
| } |
| |
| /* case 2 : y direction incomplete ctb */ |
| if((cu_y0_frm + cu_size) >= pic_height) |
| { |
| is_last_blk_in_qg |= |
| ((cu_x0 + cu_size) >= |
| ((ps_entropy_ctxt->i4_qg_pos_x << 3) + (WORD32)min_cu_qp_delta_size)); |
| } |
| |
| cur_cu_offset = ps_enc_cu->b3_cu_pos_x + (ps_enc_cu->b3_cu_pos_y * 8); |
| |
| if((ps_entropy_ctxt->i4_is_cu_cbf_zero || no_res_flag || skip_flag) && |
| ((ps_entropy_ctxt->i1_encode_qp_delta))) |
| { |
| { // clang-format off |
| /*it should remember average of qp_top and qp_left*/ |
| if(ps_entropy_ctxt->i4_qg_pos_x > 0) |
| { |
| qp_left = |
| ps_entropy_ctxt->ai4_8x8_cu_qp[(ps_entropy_ctxt->i4_qg_pos_x - 1) + |
| (ps_entropy_ctxt->i4_qg_pos_y * 8)]; |
| } |
| if(ps_entropy_ctxt->i4_qg_pos_y > 0) |
| { |
| qp_top = |
| ps_entropy_ctxt->ai4_8x8_cu_qp[ps_entropy_ctxt->i4_qg_pos_x + |
| (ps_entropy_ctxt->i4_qg_pos_y - 1) * |
| 8]; |
| } // clang-format on |
| if(ps_entropy_ctxt->i4_qg_pos_x == 0) |
| { |
| /*previous coded Qp*/ |
| qp_left = ps_entropy_ctxt->i1_cur_qp; |
| } |
| if(ps_entropy_ctxt->i4_qg_pos_y == 0) |
| { |
| /*previous coded Qp*/ |
| qp_top = ps_entropy_ctxt->i1_cur_qp; |
| } |
| cur_qp = (qp_top + qp_left + 1) >> 1; |
| /*In case of skip or zero cbf CU the previous qp used has to be updated*/ |
| if(is_last_blk_in_qg) |
| ps_entropy_ctxt->i1_cur_qp = cur_qp; |
| } |
| } |
| else |
| { |
| cur_qp = (WORD32)ps_enc_cu->ps_enc_tu->s_tu.b7_qp; |
| } |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| WORD32 temp = 0; |
| /*PIC_INFO: Accumalate average qp, min qp and max qp*/ |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_qp += cur_qp; |
| if(cu_size == 64) |
| temp = 6; |
| else if(cu_size == 32) |
| temp = 4; |
| else if(cu_size == 16) |
| temp = 2; |
| else if(cu_size == 8) |
| temp = 0; |
| |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_qp_min_cu += (cur_qp * (1 << temp)); |
| if(cur_qp < ps_entropy_ctxt->ps_pic_level_info->i4_min_qp) |
| ps_entropy_ctxt->ps_pic_level_info->i4_min_qp = cur_qp; |
| if(cur_qp > ps_entropy_ctxt->ps_pic_level_info->i4_max_qp) |
| ps_entropy_ctxt->ps_pic_level_info->i4_max_qp = cur_qp; |
| } |
| |
| for(i = 0; i < (WORD32)ps_enc_cu->b4_cu_size; i++) |
| { |
| for(j = 0; j < (WORD32)ps_enc_cu->b4_cu_size; j++) |
| { |
| ps_entropy_ctxt->ai4_8x8_cu_qp[cur_cu_offset + (i * 8) + j] = cur_qp; |
| } |
| } |
| ps_entropy_ctxt->i4_is_cu_cbf_zero = 1; |
| } |
| |
| return ret; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Entropy encoding of SAO related syntax elements as per sec 7.3.8.3 |
| * |
| * @par Description |
| * Encoding of sao related syntax elements at ctb level. |
| * |
| * @param[inout] ps_entropy_ctxt |
| * pointer to entropy context (handle) |
| * |
| * @param[in] ps_ctb_enc_loop_out |
| * pointer to ctb level output structure from enc loop |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_cabac_encode_sao( |
| entropy_context_t *ps_entropy_ctxt, ctb_enc_loop_out_t *ps_ctb_enc_loop_out) |
| { |
| WORD32 error = IHEVCE_SUCCESS; |
| sao_enc_t *ps_sao; |
| nbr_avail_flags_t *ps_ctb_nbr_avail_flags; |
| slice_header_t *ps_slice_hdr = ps_entropy_ctxt->ps_slice_hdr; |
| cab_ctxt_t *ps_cabac = &ps_entropy_ctxt->s_cabac_ctxt; |
| |
| UWORD8 u1_left_avail, u1_top_avail; |
| |
| ps_ctb_nbr_avail_flags = &ps_ctb_enc_loop_out->s_ctb_nbr_avail_flags; |
| |
| ps_sao = &ps_ctb_enc_loop_out->s_sao; |
| |
| ASSERT(ps_sao->b1_sao_merge_left_flag < 2); |
| |
| u1_left_avail = ps_ctb_nbr_avail_flags->u1_left_avail; |
| u1_top_avail = ps_ctb_nbr_avail_flags->u1_top_avail; |
| |
| if(u1_left_avail == 1) |
| { |
| /*Encode the sao_merge_left_flag as FL as per table 9-32*/ |
| error |= |
| ihevce_cabac_encode_bin(ps_cabac, ps_sao->b1_sao_merge_left_flag, IHEVC_CAB_SAO_MERGE); |
| |
| AEV_TRACE("sao_merge_flag", ps_sao->b1_sao_merge_left_flag, ps_cabac->u4_range); |
| } |
| |
| if((u1_top_avail == 1) && (!ps_sao->b1_sao_merge_left_flag)) |
| { |
| /*Encode the sao_merge_up_flag as FL as per table 9-32*/ |
| error |= |
| ihevce_cabac_encode_bin(ps_cabac, ps_sao->b1_sao_merge_up_flag, IHEVC_CAB_SAO_MERGE); |
| |
| AEV_TRACE("sao_merge_flag", ps_sao->b1_sao_merge_up_flag, ps_cabac->u4_range); |
| } |
| |
| if((!ps_sao->b1_sao_merge_left_flag) && (!ps_sao->b1_sao_merge_up_flag)) |
| { |
| WORD32 c_idx; |
| WORD32 sao_type_idx = ps_sao->b3_y_type_idx; |
| |
| /*Run a loop for y,cb and cr to encode the type idx for luma and chroma*/ |
| for(c_idx = 0; c_idx < 3; c_idx++) |
| { |
| if((ps_slice_hdr->i1_slice_sao_luma_flag && c_idx == 0) || |
| (ps_slice_hdr->i1_slice_sao_chroma_flag && c_idx > 0)) |
| { |
| WORD32 ctxt_bin; |
| |
| /**************************************************************************/ |
| /* encode the sao_type_idx as per Table 9-33 */ |
| /* First bin is context model based prefix : 1 if sao_type_idx > 0 else 0 */ |
| /* Second bin is coded as bypass bin if sao_type_ide > 0 */ |
| /**************************************************************************/ |
| |
| if(c_idx < 2) |
| { |
| WORD32 sao_type_idx_temp; |
| |
| ASSERT(ps_sao->b3_cb_type_idx == ps_sao->b3_cr_type_idx); |
| |
| sao_type_idx = c_idx ? ps_sao->b3_cb_type_idx : ps_sao->b3_y_type_idx; |
| |
| ctxt_bin = sao_type_idx ? 1 : 0; |
| |
| if(sao_type_idx > 1) |
| { |
| sao_type_idx_temp = 2; |
| } |
| else |
| { |
| sao_type_idx_temp = sao_type_idx; |
| } |
| |
| ASSERT(sao_type_idx_temp < 3); |
| |
| /*Encode the first bin as context bin as per table 9-37*/ |
| error |= ihevce_cabac_encode_bin(ps_cabac, ctxt_bin, IHEVC_CAB_SAO_TYPE); |
| |
| if(sao_type_idx_temp) |
| { |
| /*Binarisation for sao_type_idx is TR(truncated rice) process as per |
| * table 9-32 with cMax=2 and cRiceParam=0 |
| */ |
| |
| /* Encode the second bin as bypass bin as per below table*/ |
| /* |
| |Symbol | Prefix |Prefix length |Prefix bins| |
| | 0 | 0 | 1 | 0 | |
| | 1 | 1 | 2 | 10 | |
| | 2 | 2 | 2 | 11 | |
| |
| Since cRiceParam=0, there is no suffix code |
| */ |
| |
| error |= ihevce_cabac_encode_bypass_bin(ps_cabac, sao_type_idx_temp - 1); |
| } |
| AEV_TRACE("sao_type_idx", sao_type_idx_temp, ps_cabac->u4_range); |
| } |
| |
| if(sao_type_idx != 0) |
| { |
| WORD32 i; |
| UWORD8 u1_bit_depth = ps_entropy_ctxt->ps_sps->i1_bit_depth_luma_minus8 + 8; |
| WORD8 *sao_offset; |
| WORD32 sao_band_position; |
| WORD32 c_max = (1 << (MIN(u1_bit_depth, 10) - 5)) - |
| 1; //( 1 << (MIN(BIT_DEPTH, 10) - 5)) - 1; |
| |
| if(c_idx == 0) |
| { |
| //sao_offset[0] = ps_sao->b4_y_offset_1; |
| //sao_offset[1] = ps_sao->b4_y_offset_2; |
| //sao_offset[2] = ps_sao->b4_y_offset_3; |
| //sao_offset[3] = ps_sao->b4_y_offset_4; |
| sao_offset = &ps_sao->u1_y_offset[1]; |
| sao_band_position = ps_sao->b5_y_band_pos; |
| } |
| else if(c_idx == 1) |
| { |
| //sao_offset[0] = ps_sao->b4_cb_offset_1; |
| //sao_offset[1] = ps_sao->b4_cb_offset_2; |
| //sao_offset[2] = ps_sao->b4_cb_offset_3; |
| //sao_offset[3] = ps_sao->b4_cb_offset_4; |
| sao_offset = &ps_sao->u1_cb_offset[1]; |
| sao_band_position = ps_sao->b5_cb_band_pos; |
| } |
| else |
| { |
| //sao_offset[0] = ps_sao->b4_cr_offset_1; |
| //sao_offset[1] = ps_sao->b4_cr_offset_2; |
| //sao_offset[2] = ps_sao->b4_cr_offset_3; |
| //sao_offset[3] = ps_sao->b4_cr_offset_4; |
| sao_offset = &ps_sao->u1_cr_offset[1]; |
| sao_band_position = ps_sao->b5_cr_band_pos; |
| } |
| |
| for(i = 0; i < 4; i++) |
| { |
| /*Encode the sao offset value as tunary bypass*/ |
| error |= |
| ihevce_cabac_encode_tunary_bypass(ps_cabac, abs(sao_offset[i]), c_max); |
| |
| AEV_TRACE("sao_offset_abs", abs(sao_offset[i]), ps_cabac->u4_range); |
| } |
| |
| /*Band offset case*/ |
| if(sao_type_idx == 1) |
| { |
| for(i = 0; i < 4; i++) |
| { |
| if(sao_offset[i] != 0) |
| { |
| /*Encode the sao offset sign as FL as per table 9-32*/ |
| error |= ihevce_cabac_encode_bypass_bin( |
| ps_cabac, |
| (abs(sao_offset[i]) + sao_offset[i] == 0)); //, |
| //IHEVC_CAB_SAO_MERGE |
| //); |
| |
| AEV_TRACE( |
| "sao_offset_sign", |
| (abs(sao_offset[i]) + sao_offset[i] == 0), |
| ps_cabac->u4_range); |
| } |
| } |
| |
| /*Encode the sao band position as FL as per table 9-32*/ |
| error |= ihevce_cabac_encode_bypass_bins(ps_cabac, sao_band_position, 5); |
| AEV_TRACE("sao_band_position", sao_band_position, ps_cabac->u4_range); |
| } |
| else |
| { |
| /*Encode the sao edge offset class for luma and chroma as FL as per table 9-32*/ |
| if(c_idx == 0) |
| { |
| error |= ihevce_cabac_encode_bypass_bins( |
| ps_cabac, (ps_sao->b3_y_type_idx - 2), 2); |
| AEV_TRACE( |
| "sao_eo_class", (ps_sao->b3_y_type_idx - 2), ps_cabac->u4_range); |
| } |
| |
| if(c_idx == 1) |
| { |
| ASSERT(ps_sao->b3_cb_type_idx == ps_sao->b3_cr_type_idx); |
| error |= ihevce_cabac_encode_bypass_bins( |
| ps_cabac, (ps_sao->b3_cb_type_idx - 2), 2); |
| AEV_TRACE( |
| "sao_eo_class", (ps_sao->b3_cb_type_idx - 2), ps_cabac->u4_range); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| return (error); |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Encodes a coding quad tree (QuadTree syntax) as per section 7.3.8 |
| * |
| * @par Description |
| * Entropy encode of coding quad tree based on cu split flags of ctb as per |
| * section:7.3.8 |
| * |
| * @param[inout] ps_entropy_ctxt |
| * pointer to entropy context (handle) |
| * |
| * @param[in] x0_frm |
| * x co-ordinate of current cu node of coding tree |
| * |
| * @param[in] y0_frm |
| * y co-ordinate of current cu node of coding tree |
| * |
| * @param[in] log2_cb_size |
| * current cu node block size |
| * |
| * @param[in] ct_depth |
| * depth of current cu node w.r.t ctb |
| * |
| * @param[in] ps_ctb |
| * pointer to current ctb structure |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_encode_coding_quadtree( |
| entropy_context_t *ps_entropy_ctxt, |
| WORD32 x0_frm, |
| WORD32 y0_frm, |
| WORD32 log2_cb_size, |
| WORD32 ct_depth, |
| ctb_enc_loop_out_t *ps_ctb, |
| ihevce_tile_params_t *ps_tile_params) |
| { |
| WORD32 ret = IHEVCE_SUCCESS; |
| sps_t *ps_sps = ps_entropy_ctxt->ps_sps; |
| pps_t *ps_pps = ps_entropy_ctxt->ps_pps; |
| WORD32 split_cu_flag; |
| WORD32 cu_idx = ps_entropy_ctxt->i4_cu_idx; |
| cu_enc_loop_out_t *ps_enc_cu = ps_ctb->ps_enc_cu + cu_idx; |
| |
| /* CU size in pels */ |
| WORD32 cu_size = ps_enc_cu->b4_cu_size << 3; |
| |
| WORD32 pic_width = ps_tile_params->i4_curr_tile_width; |
| WORD32 pic_height = ps_tile_params->i4_curr_tile_height; |
| |
| WORD32 log2_min_cb_size = ps_sps->i1_log2_min_coding_block_size; |
| WORD32 ctb_size = (1 << (log2_cb_size + ct_depth)); |
| cab_ctxt_t *ps_cabac = &ps_entropy_ctxt->s_cabac_ctxt; |
| |
| /* top row cu depth stored for frm_width (1byte per mincusize=8) */ |
| UWORD8 *pu1_cu_depth_top = ps_entropy_ctxt->pu1_cu_depth_top; |
| |
| /* left cu depth stored for one ctb column (1byte per mincusize=8) */ |
| UWORD8 *pu1_cu_depth_left = &ps_entropy_ctxt->au1_cu_depth_left[0]; |
| |
| /* calculation of top and left nbr availability */ |
| WORD32 top_avail; |
| WORD32 left_avail; |
| |
| /* top and left cu within ctb or outside ctb boundary */ |
| left_avail = (x0_frm & (ctb_size - 1)) ? 1 : ps_ctb->s_ctb_nbr_avail_flags.u1_left_avail; |
| top_avail = (y0_frm & (ctb_size - 1)) ? 1 : ps_ctb->s_ctb_nbr_avail_flags.u1_top_avail; |
| |
| /* Sanity checks */ |
| ASSERT(ct_depth <= 3); |
| ASSERT((cu_idx >= 0) && (cu_idx < ps_ctb->u1_num_cus_in_ctb)); |
| ASSERT(cu_size >= (1 << log2_min_cb_size)); |
| ASSERT(((ps_enc_cu->b3_cu_pos_x << 3) + cu_size) <= (UWORD32)ctb_size); |
| ASSERT(((ps_enc_cu->b3_cu_pos_y << 3) + cu_size) <= (UWORD32)ctb_size); |
| |
| /* Encode cu split flags based on following conditions; See section 7.3.8*/ |
| if(((x0_frm + (1 << log2_cb_size)) <= pic_width) && |
| ((y0_frm + (1 << log2_cb_size)) <= pic_height) && (log2_cb_size > log2_min_cb_size) && |
| (ps_entropy_ctxt->i1_ctb_num_pcm_blks == 0)) |
| { |
| /* encode the split cu flag */ |
| WORD32 ctxt_inc = IHEVC_CAB_SPLIT_CU_FLAG; |
| UWORD32 u4_bits_estimated_prev; |
| /* Context increment for skip flag as per Table 9-38 */ |
| if(top_avail) |
| { |
| ctxt_inc += (pu1_cu_depth_top[x0_frm >> 3] > ct_depth); |
| } |
| |
| if(left_avail) |
| { |
| ctxt_inc += (pu1_cu_depth_left[(y0_frm >> 3) & 0x7] > ct_depth); |
| } |
| |
| /* split if actual cu size is smaller than target cu size */ |
| split_cu_flag = cu_size < (1 << log2_cb_size); |
| u4_bits_estimated_prev = ps_cabac->u4_bits_estimated_q12; |
| ret |= ihevce_cabac_encode_bin(ps_cabac, split_cu_flag, ctxt_inc); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { // clang-format off |
| /*PIC INFO : populate cu split flag*/ |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_split_cu_flag += |
| (ps_cabac->u4_bits_estimated_q12 - u4_bits_estimated_prev); |
| } // clang-format on |
| |
| AEV_TRACE("split_cu_flag", split_cu_flag, ps_cabac->u4_range); |
| if(split_cu_flag == 0) |
| { |
| AEV_TRACE("split_cu_flag : X0", (x0_frm >> 6) << 6, ps_cabac->u4_range); |
| AEV_TRACE("split_cu_flag : Y0", (y0_frm >> 6) << 6, ps_cabac->u4_range); |
| } |
| } |
| else |
| { |
| /*********************************************************************/ |
| /* split cu is implicitly derived as 1 in frame/slice boundary case */ |
| /* else split cu is implicitly derived as 0 if mincu size is reached */ |
| /*********************************************************************/ |
| if(log2_cb_size > ps_sps->i1_log2_min_coding_block_size) |
| split_cu_flag = 1; |
| else |
| split_cu_flag = 0; |
| } |
| |
| /************************************************************************/ |
| /* Reset qp delata coded flag appropriately so as to signal qp rightly */ |
| /* during transform coding */ |
| /************************************************************************/ |
| if((ps_pps->i1_cu_qp_delta_enabled_flag) && (ct_depth <= (ps_pps->i1_diff_cu_qp_delta_depth))) |
| |
| { |
| ps_entropy_ctxt->i1_encode_qp_delta = 1; |
| } |
| /*else |
| { |
| ps_entropy_ctxt->i1_encode_qp_delta = 0; |
| }*/ |
| |
| if(split_cu_flag) |
| { |
| /* recurse quad tree till a leaf node is reached */ |
| WORD32 x1_frm = x0_frm + ((1 << log2_cb_size) >> 1); |
| WORD32 y1_frm = y0_frm + ((1 << log2_cb_size) >> 1); |
| |
| /* node0 of quad tree */ |
| ret |= ihevce_encode_coding_quadtree( |
| ps_entropy_ctxt, x0_frm, y0_frm, log2_cb_size - 1, ct_depth + 1, ps_ctb, ps_tile_params); |
| |
| if(x1_frm < pic_width) |
| { /* node1 of quad tree */ |
| ret |= ihevce_encode_coding_quadtree( |
| ps_entropy_ctxt, |
| x1_frm, |
| y0_frm, |
| log2_cb_size - 1, |
| ct_depth + 1, |
| ps_ctb, |
| ps_tile_params); |
| } |
| |
| if(y1_frm < pic_height) |
| { |
| /* node2 of quad tree */ |
| ret |= ihevce_encode_coding_quadtree( |
| ps_entropy_ctxt, |
| x0_frm, |
| y1_frm, |
| log2_cb_size - 1, |
| ct_depth + 1, |
| ps_ctb, |
| ps_tile_params); |
| } |
| |
| if((x1_frm < pic_width) && (y1_frm < pic_height)) |
| { |
| /* node3 of quad tree */ |
| ret |= ihevce_encode_coding_quadtree( |
| ps_entropy_ctxt, |
| x1_frm, |
| y1_frm, |
| log2_cb_size - 1, |
| ct_depth + 1, |
| ps_ctb, |
| ps_tile_params); |
| } |
| } |
| else |
| { |
| /* leaf node is reached! Encode the CU */ |
| WORD32 i; |
| |
| /* sanity checks */ |
| ASSERT(ps_entropy_ctxt->i1_ctb_num_pcm_blks == 0); |
| |
| if(ps_entropy_ctxt->i1_ctb_num_pcm_blks == 0) |
| { |
| UWORD32 u4_bits_eztimated = ps_entropy_ctxt->s_cabac_ctxt.u4_bits_estimated_q12; |
| /* Encode a non-PCM CU */ |
| /*PCM INFO: populate total TUs*/ |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_tu += ps_enc_cu->u2_num_tus_in_cu; |
| } |
| |
| ret |= ihevce_cabac_encode_coding_unit( |
| ps_entropy_ctxt, ps_enc_cu, ct_depth, top_avail, left_avail); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| // clang-format off |
| if(PRED_MODE_INTRA == ps_enc_cu->b1_pred_mode_flag) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_intra += |
| (ps_entropy_ctxt->s_cabac_ctxt.u4_bits_estimated_q12 - |
| u4_bits_eztimated); |
| } |
| else |
| { |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_inter += |
| (ps_entropy_ctxt->s_cabac_ctxt.u4_bits_estimated_q12 - |
| u4_bits_eztimated); |
| } |
| // clang-format on |
| } |
| } |
| else |
| { //TODO: //PCM not supported in this encoder |
| } |
| |
| /* update cu_idx, left and top arrays for cudepth after encoding cu */ |
| ps_entropy_ctxt->i4_cu_idx++; |
| for(i = 0; i < (cu_size >> 3); i++) |
| { |
| pu1_cu_depth_top[(x0_frm >> 3) + i] = ct_depth; |
| pu1_cu_depth_left[((y0_frm >> 3) & 0x7) + i] = ct_depth; |
| } |
| } |
| |
| return ret; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Encodes slice data (General Slice syntax) as per section 7.3.6.1 |
| * |
| * @par Description |
| * Entropy encode of all ctbs in a slice as per section 7.3.6.1 |
| * |
| * @param[inout] ps_entropy_ctxt |
| * pointer to entropy context (handle) |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ihevce_encode_slice_data( |
| entropy_context_t *ps_entropy_ctxt, |
| ihevce_tile_params_t *ps_tile_params, |
| WORD32 *pi4_end_of_slice_flag) |
| { |
| WORD32 ret = IHEVCE_SUCCESS; |
| WORD32 end_of_slice_seg_flag = 0; |
| sps_t *ps_sps = ps_entropy_ctxt->ps_sps; |
| pps_t *ps_pps = ps_entropy_ctxt->ps_pps; |
| slice_header_t *ps_slice_hdr = ps_entropy_ctxt->ps_slice_hdr; |
| |
| cab_ctxt_t *ps_cabac = &ps_entropy_ctxt->s_cabac_ctxt; |
| |
| /* State of previous CTB before it's terminate bin is encoded */ |
| cab_ctxt_t s_cabac_prev_ctb; |
| |
| /* State after current CTB's encoding is complete but before |
| the termintate bin encoding */ |
| cab_ctxt_t s_cabac_after_ctb; |
| |
| /* Storing the last 4 bytes before adding terminate bin |
| as these 4 bytes might get corrupted while encoding terminate bin */ |
| UWORD32 u4_prev_ctb_temp, u4_cur_ctb_temp; |
| WORD8 i1_last_cu_qp = 0; |
| bitstrm_t *ps_bit_strm = &ps_entropy_ctxt->s_bit_strm; |
| |
| WORD32 log2_ctb_size, ctb_size; |
| //WORD32 pic_width = ps_sps->i2_pic_width_in_luma_samples; |
| //WORD32 pic_height = ps_sps->i2_pic_height_in_luma_samples; |
| WORD32 pic_width = ps_tile_params->i4_curr_tile_width; |
| WORD32 pic_height = ps_tile_params->i4_curr_tile_height; |
| WORD32 num_ctb_in_row; |
| |
| WORD32 i4_curr_ctb_x, i4_curr_ctb_y; |
| UWORD32 u4_slice_seg_hdr_size = (UWORD32)ps_entropy_ctxt->i4_slice_seg_len; |
| UWORD32 u4_slice_start_offset = ps_bit_strm->u4_strm_buf_offset - u4_slice_seg_hdr_size; |
| |
| WORD32 ctb_slice_address = ps_slice_hdr->i2_slice_address; |
| WORD32 slice_qp = ps_slice_hdr->i1_slice_qp_delta + ps_pps->i1_pic_init_qp; |
| WORD32 cabac_init_idc; |
| WORD32 x0_frm, y0_frm; |
| ctb_enc_loop_out_t *ps_first_ctb; // Points to first CTB of ctb-row |
| ctb_enc_loop_out_t *ps_ctb; |
| WORD32 ctb_ctr = 0; //count ctb encoded in a ctb-row |
| |
| ihevce_sys_api_t *ps_sys_api = (ihevce_sys_api_t *)ps_entropy_ctxt->pv_sys_api; |
| |
| /* Structure to backup pic info in case we need to revert back to pervious |
| CTB when i4_slice_segment_mode is 2 */ |
| s_pic_level_acc_info_t s_pic_level_info_backup; // info before |
| |
| /* Initialize the CTB size from sps parameters */ |
| log2_ctb_size = |
| ps_sps->i1_log2_min_coding_block_size + ps_sps->i1_log2_diff_max_min_coding_block_size; |
| |
| ctb_size = (1 << log2_ctb_size); |
| |
| /* sanity checks */ |
| ASSERT((log2_ctb_size >= 3) && (log2_ctb_size <= 6)); |
| |
| ps_entropy_ctxt->i1_log2_ctb_size = (WORD8)log2_ctb_size; |
| |
| /* Initiallise before starting slice. For single slice case both |
| x and y will be set to zero */ |
| ps_entropy_ctxt->i4_ctb_x = ps_entropy_ctxt->i4_next_slice_seg_x; |
| ps_entropy_ctxt->i4_ctb_y = ps_entropy_ctxt->i4_next_slice_seg_y; |
| num_ctb_in_row = (ps_sps->i2_pic_width_in_luma_samples + ctb_size - 1) >> log2_ctb_size; |
| |
| /* initialize the cabac init idc based on slice type */ |
| if(ps_slice_hdr->i1_slice_type == ISLICE) |
| { |
| cabac_init_idc = 0; |
| } |
| else if(ps_slice_hdr->i1_slice_type == PSLICE) |
| { |
| cabac_init_idc = ps_slice_hdr->i1_cabac_init_flag ? 2 : 1; |
| } |
| else |
| { |
| cabac_init_idc = ps_slice_hdr->i1_cabac_init_flag ? 1 : 2; |
| } |
| ps_cabac->i1_entropy_coding_sync_enabled_flag = ps_pps->i1_entropy_coding_sync_enabled_flag; |
| |
| /* Dependent slices should be ON only when slice segment mode is enabled */ |
| if(ps_slice_hdr->i1_dependent_slice_flag == 1) |
| { |
| ASSERT( |
| (ps_entropy_ctxt->i4_slice_segment_mode == 1) || |
| (ps_entropy_ctxt->i4_slice_segment_mode == 2)); |
| } |
| |
| /* initialize the cabac engine. For dependent slice segments |
| cabac context models will not be reset */ |
| if(ps_slice_hdr->i1_dependent_slice_flag == 1) |
| { |
| ret = ihevce_cabac_reset(ps_cabac, ps_bit_strm, CABAC_MODE_ENCODE_BITS); |
| } |
| else |
| { |
| ret = ihevce_cabac_init( |
| ps_cabac, |
| ps_bit_strm, |
| CLIP3(slice_qp, 0, IHEVC_MAX_QP), |
| cabac_init_idc, |
| CABAC_MODE_ENCODE_BITS); |
| |
| /* initialize qp to slice start qp */ |
| ps_entropy_ctxt->i1_cur_qp = slice_qp; |
| } |
| |
| /* initialize slice x and y offset in pels w.r.t top left conrner */ |
| x0_frm = ps_entropy_ctxt->i4_ctb_x << log2_ctb_size; |
| y0_frm = ps_entropy_ctxt->i4_ctb_y << log2_ctb_size; |
| |
| /* Pointing ctb structure to the correct CTB in frame based on |
| slice address */ |
| ps_first_ctb = ps_entropy_ctxt->ps_frm_ctb + ctb_slice_address; |
| ps_ctb = ps_first_ctb - 1; |
| |
| //ps_entropy_ctxt->i4_ctb_slice_x = 0; |
| //ps_entropy_ctxt->i4_ctb_slice_y = 0; |
| |
| /* Setting to NULL to detect if first CTB of slice itself |
| exceeds the i4_slice_segment_max_length. Will be used only if |
| i4_slice_segment_mode is non-zero */ |
| s_cabac_prev_ctb.pu1_strm_buffer = NULL; |
| |
| do |
| { |
| UWORD8 au1_cu_depth_top[8] = { 0 }, au1_cu_depth_left[8] = { 0 }; |
| UWORD8 u1_skip_cu_top = 0; |
| UWORD32 u4_skip_cu_left = 0; |
| |
| /* By default assume that slice-segment is going to end after |
| current CTB */ |
| end_of_slice_seg_flag = 1; |
| |
| i4_curr_ctb_x = ps_entropy_ctxt->i4_ctb_x; |
| i4_curr_ctb_y = ps_entropy_ctxt->i4_ctb_y; |
| |
| if(1 == ps_tile_params->i4_tiles_enabled_flag) |
| { |
| ps_ctb = ps_first_ctb + ctb_ctr; |
| } |
| else |
| { |
| ps_ctb++; |
| } |
| |
| /* Store some parameters. Will be used if current CTB's encoding |
| has to be reverted in the event of overflow beyond i4_slice_segment_max_length */ |
| if(2 == ps_entropy_ctxt->i4_slice_segment_mode) |
| { |
| /* Store CU depths flag */ |
| memcpy(au1_cu_depth_top, &ps_entropy_ctxt->pu1_cu_depth_top[i4_curr_ctb_x * 8], 8); |
| memcpy(au1_cu_depth_left, ps_entropy_ctxt->au1_cu_depth_left, 8); |
| |
| /* Store CU skip flags */ |
| u1_skip_cu_top = *(ps_entropy_ctxt->pu1_skip_cu_top + i4_curr_ctb_x); |
| u4_skip_cu_left = ps_entropy_ctxt->u4_skip_cu_left; |
| |
| /* Backup current state of pic info */ |
| s_pic_level_info_backup = *(ps_entropy_ctxt->ps_pic_level_info); |
| } |
| |
| /* Section:7.3.7 Coding tree unit syntax */ |
| /* coding_tree_unit() inlined here */ |
| ps_entropy_ctxt->i1_ctb_num_pcm_blks = 0; |
| |
| /* Simple Neigbour avail calculation */ |
| ps_ctb->s_ctb_nbr_avail_flags.u1_left_avail = (x0_frm > 0); |
| ps_ctb->s_ctb_nbr_avail_flags.u1_top_avail = (y0_frm > 0); |
| |
| ps_entropy_ctxt->i4_cu_idx = 0; |
| |
| /* Encode SAO syntax as per section 7.3.8.3 */ |
| if(ps_sps->i1_sample_adaptive_offset_enabled_flag) |
| { |
| if((ps_slice_hdr->i1_slice_sao_luma_flag) || (ps_slice_hdr->i1_slice_sao_chroma_flag)) |
| { |
| /*PIC INFO: SAO encode biys*/ |
| UWORD32 u4_bits_estimated_prev = |
| ps_entropy_ctxt->s_cabac_ctxt.u4_bits_estimated_q12; |
| |
| ret |= ihevce_cabac_encode_sao(ps_entropy_ctxt, ps_ctb); |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| ps_entropy_ctxt->ps_pic_level_info->u8_bits_estimated_sao += |
| (ps_entropy_ctxt->s_cabac_ctxt.u4_bits_estimated_q12 - |
| u4_bits_estimated_prev); |
| } |
| } |
| } |
| |
| ps_entropy_ctxt->s_cabac_ctxt.u4_bits_estimated_q12 = 0; |
| |
| if(ps_cabac->e_cabac_op_mode == CABAC_MODE_ENCODE_BITS) |
| { |
| /*PIC_INFO: Update total no.of CUS*/ |
| ps_entropy_ctxt->ps_pic_level_info->i8_total_cu += ps_ctb->u1_num_cus_in_ctb; |
| } |
| /* call recursive coding tree structure to encode all cus in ctb */ |
| ret |= ihevce_encode_coding_quadtree( |
| ps_entropy_ctxt, x0_frm, y0_frm, log2_ctb_size, 0, ps_ctb, ps_tile_params); |
| |
| /* post ctb encode increments */ |
| ctb_ctr++; |
| x0_frm += ctb_size; |
| ps_entropy_ctxt->i4_ctb_x++; |
| //ps_entropy_ctxt->i4_ctb_slice_x++; |
| |
| if(ps_pps->i1_entropy_coding_sync_enabled_flag && ps_entropy_ctxt->i4_ctb_x == 2) |
| { |
| /*backup cabac context at end of second CTB(top right neighbour for start of bottom row)*/ |
| ihevce_cabac_ctxt_backup(ps_cabac); |
| } |
| |
| /* end of row check using x0_frm offset */ |
| if(x0_frm >= pic_width) |
| { |
| ctb_ctr = 0; |
| ps_first_ctb += num_ctb_in_row; |
| x0_frm = 0; |
| y0_frm += ctb_size; |
| |
| ps_entropy_ctxt->i4_ctb_x = 0; |
| ps_entropy_ctxt->i4_ctb_y++; |
| //ps_entropy_ctxt->i4_ctb_slice_y++; |
| } |
| |
| /* Detect end of slice. Which would mean end-of-slice-segment too */ |
| *pi4_end_of_slice_flag = (y0_frm >= pic_height); |
| |
| if(0 == ps_entropy_ctxt->i4_slice_segment_mode) |
| { |
| /* If slice ends then so does slice segment */ |
| end_of_slice_seg_flag = *pi4_end_of_slice_flag; |
| |
| /* encode terminate bin */ |
| ret |= ihevce_cabac_encode_terminate(ps_cabac, end_of_slice_seg_flag, 0); |
| } |
| else if(1 == ps_entropy_ctxt->i4_slice_segment_mode) |
| { |
| ps_entropy_ctxt->i4_slice_seg_len++; |
| if((ps_entropy_ctxt->i4_slice_seg_len) >= ps_entropy_ctxt->i4_slice_segment_max_length) |
| { |
| /* Store the address of CTB from where next slice segment will start */ |
| ps_entropy_ctxt->i4_next_slice_seg_x = ps_entropy_ctxt->i4_ctb_x; |
| ps_entropy_ctxt->i4_next_slice_seg_y = ps_entropy_ctxt->i4_ctb_y; |
| } |
| else |
| { |
| /* If slice ends then so does slice segment */ |
| end_of_slice_seg_flag = *pi4_end_of_slice_flag; |
| } |
| |
| /* encode terminate bin */ |
| ret |= ihevce_cabac_encode_terminate(ps_cabac, end_of_slice_seg_flag, 0); |
| } |
| else if(2 == ps_entropy_ctxt->i4_slice_segment_mode) |
| { |
| //WORD32 i4_slice_seg_len_prev = i4_slice_seg_len; |
| |
| /* Store some parameters. Will be used to revert back to this state if |
| i4_slice_segment_max_length is not exceeded after encoding end-of-slice */ |
| s_cabac_after_ctb = *ps_cabac; |
| u4_cur_ctb_temp = |
| *((UWORD32 *)(ps_cabac->pu1_strm_buffer + ps_cabac->u4_strm_buf_offset - 4)); |
| |
| /* encode terminate bin. For dependent slices, always simulate |
| end-of-slice to check if i4_slice_segment_max_length is surpassed */ |
| ret |= ihevce_cabac_encode_terminate(ps_cabac, 1, 0); |
| |
| //i4_slice_seg_len_prev = i4_slice_seg_len; |
| ps_entropy_ctxt->i4_slice_seg_len = |
| (WORD32)(ps_cabac->u4_strm_buf_offset - u4_slice_start_offset); |
| |
| //ps_entropy_ctxt->i4_slice_seg_len = i4_slice_seg_len; //No need to update it. |
| |
| if(ps_entropy_ctxt->i4_slice_seg_len > ps_entropy_ctxt->i4_slice_segment_max_length) |
| { |
| if(s_cabac_prev_ctb.pu1_strm_buffer == NULL) |
| { |
| /* Bytes in a single CTB has exceeded the i4_slice_segment_max_length |
| set by the user. Close the slice-segment and print a warning */ |
| |
| /* Store the address of CTB from where next slice segment will start */ |
| ps_entropy_ctxt->i4_next_slice_seg_x = ps_entropy_ctxt->i4_ctb_x; |
| ps_entropy_ctxt->i4_next_slice_seg_y = ps_entropy_ctxt->i4_ctb_y; |
| |
| ps_sys_api->ihevce_printf( |
| ps_sys_api->pv_cb_handle, |
| "IHEVCE_WARNING: CTB(%2d, %2d) encoded using %d bytes; " |
| "this exceeds max slice segment size %d as requested " |
| "by the user\n", |
| i4_curr_ctb_x, |
| i4_curr_ctb_y, |
| ps_entropy_ctxt->i4_slice_seg_len, |
| ps_entropy_ctxt->i4_slice_segment_max_length); |
| } |
| else /* Revert back to previous CTB's state and close current slice */ |
| { |
| *ps_cabac = s_cabac_prev_ctb; |
| *((UWORD32 *)(ps_cabac->pu1_strm_buffer + ps_cabac->u4_strm_buf_offset - 4)) = |
| u4_prev_ctb_temp; |
| |
| memcpy( |
| &ps_entropy_ctxt->pu1_cu_depth_top[i4_curr_ctb_x * 8], au1_cu_depth_top, 8); |
| memcpy(ps_entropy_ctxt->au1_cu_depth_left, au1_cu_depth_left, 8); |
| |
| *(ps_entropy_ctxt->pu1_skip_cu_top + i4_curr_ctb_x) = u1_skip_cu_top; |
| ps_entropy_ctxt->u4_skip_cu_left = u4_skip_cu_left; |
| |
| ps_entropy_ctxt->i1_cur_qp = i1_last_cu_qp; |
| |
| /* Restore pic info */ |
| *(ps_entropy_ctxt->ps_pic_level_info) = s_pic_level_info_backup; |
| |
| /* encode terminate bin with end-of-slice */ |
| ret |= ihevce_cabac_encode_terminate(ps_cabac, 1, 0); |
| |
| /* Store the address of CTB from where next slice segment will start */ |
| ps_entropy_ctxt->i4_next_slice_seg_x = i4_curr_ctb_x; |
| ps_entropy_ctxt->i4_next_slice_seg_y = i4_curr_ctb_y; |
| |
| /* As we are reverted back to the previous CTB, force end of slice to zero */ |
| *pi4_end_of_slice_flag = 0; |
| } |
| } |
| else if(0 == *pi4_end_of_slice_flag) |
| { |
| /* As this is not the end of slice, therefore revert back |
| the end-of-slice encoding and then add terminate bit */ |
| |
| /* Signal that this is not slice segment end */ |
| end_of_slice_seg_flag = 0; |
| |
| *ps_cabac = s_cabac_after_ctb; |
| *((UWORD32 *)(ps_cabac->pu1_strm_buffer + ps_cabac->u4_strm_buf_offset - 4)) = |
| u4_cur_ctb_temp; |
| |
| /* encode terminate bin */ |
| ret |= ihevce_cabac_encode_terminate(ps_cabac, 0, 0); |
| } |
| |
| /* Update variables storing previous CTB's state in order to be |
| able to revert to previous CTB's state */ |
| s_cabac_prev_ctb = s_cabac_after_ctb; |
| u4_prev_ctb_temp = u4_cur_ctb_temp; |
| |
| i1_last_cu_qp = ps_entropy_ctxt->i1_cur_qp; |
| } |
| else //No other slice segment mode supported |
| { |
| ASSERT(0); |
| } |
| |
| AEV_TRACE("end_of_slice_flag", end_of_slice_seg_flag, ps_cabac->u4_range); |
| |
| if((0 == ps_entropy_ctxt->i4_ctb_x) && (!end_of_slice_seg_flag) && |
| (ps_pps->i1_entropy_coding_sync_enabled_flag)) |
| { |
| /* initialize qp to slice start qp */ |
| ps_entropy_ctxt->i1_cur_qp = slice_qp; |
| |
| /* flush and align to byte bounary for entropy sync every row */ |
| ret |= ihevce_cabac_encode_terminate(ps_cabac, 1, 1); |
| |
| /*This will be entered only during row end, tap bits generated in that row to cal entry point offset*/ |
| /*add error check to make sure row count doesnt exceed the size of array allocated*/ |
| ASSERT(ps_entropy_ctxt->i4_ctb_y < MAX_NUM_CTB_ROWS_FRM); |
| ps_slice_hdr->pu4_entry_point_offset[ps_entropy_ctxt->i4_ctb_y] = |
| ps_cabac->u4_strm_buf_offset; |
| |
| /*init the cabac context with top right neighbour*/ |
| ret |= ihevce_cabac_ctxt_row_init(ps_cabac); |
| } |
| |
| } while(!end_of_slice_seg_flag); |
| |
| if(end_of_slice_seg_flag && ps_pps->i1_entropy_coding_sync_enabled_flag) |
| { |
| ps_slice_hdr->pu4_entry_point_offset[ps_entropy_ctxt->i4_ctb_y] = |
| ps_cabac->u4_strm_buf_offset; |
| } |
| |
| return ret; |
| } |