| /****************************************************************************** |
| * |
| * Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore |
| * |
| * 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. |
| * |
| ******************************************************************************/ |
| /** |
| ******************************************************************************* |
| * @file |
| * ihevcd_iquant_itrans_recon_ctb.c |
| * |
| * @brief |
| * Contains functions for inverse quantization, inverse transform and recon |
| * |
| * @author |
| * Ittiam |
| * |
| * @par List of Functions: |
| * - ihevcd_iquant_itrans_recon_ctb() |
| * |
| * @remarks |
| * None |
| * |
| ******************************************************************************* |
| */ |
| /*****************************************************************************/ |
| /* File Includes */ |
| /*****************************************************************************/ |
| #include <stdio.h> |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "ihevc_typedefs.h" |
| #include "iv.h" |
| #include "ivd.h" |
| #include "ihevcd_cxa.h" |
| |
| #include "ihevc_defs.h" |
| #include "ihevc_debug.h" |
| #include "ihevc_structs.h" |
| #include "ihevc_cabac_tables.h" |
| #include "ihevc_macros.h" |
| #include "ihevc_platform_macros.h" |
| |
| #include "ihevcd_defs.h" |
| #include "ihevcd_function_selector.h" |
| #include "ihevcd_structs.h" |
| #include "ihevcd_error.h" |
| #include "ihevcd_bitstream.h" |
| #include "ihevc_common_tables.h" |
| |
| /* Intra pred includes */ |
| #include "ihevc_intra_pred.h" |
| |
| /* Inverse transform common module includes */ |
| #include "ihevc_trans_tables.h" |
| #include "ihevc_trans_macros.h" |
| #include "ihevc_itrans_recon.h" |
| #include "ihevc_recon.h" |
| #include "ihevc_chroma_itrans_recon.h" |
| #include "ihevc_chroma_recon.h" |
| |
| /* Decoder includes */ |
| #include "ihevcd_common_tables.h" |
| #include "ihevcd_iquant_itrans_recon_ctb.h" |
| #include "ihevcd_debug.h" |
| #include "ihevcd_profile.h" |
| #include "ihevcd_statistics.h" |
| #include "ihevcd_itrans_recon_dc.h" |
| |
| static const UWORD32 gau4_ihevcd_4_bit_reverse[] = { 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 }; |
| |
| |
| /* Globals */ |
| static const WORD32 g_i4_ip_funcs[MAX_NUM_IP_MODES] = |
| { IP_FUNC_MODE_0, /* Mode 0 */ |
| IP_FUNC_MODE_1, /* Mode 1 */ |
| IP_FUNC_MODE_2, /* Mode 2 */ |
| IP_FUNC_MODE_3TO9, /* Mode 3 */ |
| IP_FUNC_MODE_3TO9, /* Mode 4 */ |
| IP_FUNC_MODE_3TO9, /* Mode 5 */ |
| IP_FUNC_MODE_3TO9, /* Mode 6 */ |
| IP_FUNC_MODE_3TO9, /* Mode 7 */ |
| IP_FUNC_MODE_3TO9, /* Mode 8 */ |
| IP_FUNC_MODE_3TO9, /* Mode 9 */ |
| IP_FUNC_MODE_10, /* Mode 10 */ |
| IP_FUNC_MODE_11TO17, /* Mode 11 */ |
| IP_FUNC_MODE_11TO17, /* Mode 12 */ |
| IP_FUNC_MODE_11TO17, /* Mode 13 */ |
| IP_FUNC_MODE_11TO17, /* Mode 14 */ |
| IP_FUNC_MODE_11TO17, /* Mode 15 */ |
| IP_FUNC_MODE_11TO17, /* Mode 16 */ |
| IP_FUNC_MODE_11TO17, /* Mode 17 */ |
| IP_FUNC_MODE_18_34, /* Mode 18 */ |
| IP_FUNC_MODE_19TO25, /* Mode 19 */ |
| IP_FUNC_MODE_19TO25, /* Mode 20 */ |
| IP_FUNC_MODE_19TO25, /* Mode 21 */ |
| IP_FUNC_MODE_19TO25, /* Mode 22 */ |
| IP_FUNC_MODE_19TO25, /* Mode 23 */ |
| IP_FUNC_MODE_19TO25, /* Mode 24 */ |
| IP_FUNC_MODE_19TO25, /* Mode 25 */ |
| IP_FUNC_MODE_26, /* Mode 26 */ |
| IP_FUNC_MODE_27TO33, /* Mode 27 */ |
| IP_FUNC_MODE_27TO33, /* Mode 26 */ |
| IP_FUNC_MODE_27TO33, /* Mode 29 */ |
| IP_FUNC_MODE_27TO33, /* Mode 30 */ |
| IP_FUNC_MODE_27TO33, /* Mode 31 */ |
| IP_FUNC_MODE_27TO33, /* Mode 32 */ |
| IP_FUNC_MODE_27TO33, /* Mode 33 */ |
| IP_FUNC_MODE_18_34, /* Mode 34 */ |
| }; |
| |
| |
| const WORD16 *g_ai2_ihevc_trans_tables[] = |
| { &g_ai2_ihevc_trans_dst_4[0][0], |
| &g_ai2_ihevc_trans_4[0][0], |
| &g_ai2_ihevc_trans_8[0][0], |
| &g_ai2_ihevc_trans_16[0][0], |
| &g_ai2_ihevc_trans_32[0][0] |
| }; |
| |
| |
| /*****************************************************************************/ |
| /* Function Prototypes */ |
| /*****************************************************************************/ |
| /* Returns number of ai2_level read from ps_sblk_coeff */ |
| UWORD8* ihevcd_unpack_coeffs(WORD16 *pi2_tu_coeff, |
| WORD32 log2_trans_size, |
| UWORD8 *pu1_tu_coeff_data, |
| WORD16 *pi2_dequant_matrix, |
| WORD32 qp_rem, |
| WORD32 qp_div, |
| TRANSFORM_TYPE e_trans_type, |
| WORD32 trans_quant_bypass, |
| UWORD32 *pu4_zero_cols, |
| UWORD32 *pu4_zero_rows, |
| UWORD32 *pu4_coeff_type, |
| WORD16 *pi2_coeff_value) |
| { |
| /* Generating coeffs from coeff-map */ |
| WORD32 i; |
| WORD16 *pi2_sblk_ptr; |
| WORD32 subblk_pos_x, subblk_pos_y; |
| WORD32 sblk_scan_idx, coeff_raster_idx; |
| WORD32 sblk_non_zero_coeff_idx; |
| tu_sblk_coeff_data_t *ps_tu_sblk_coeff_data; |
| UWORD8 u1_num_coded_sblks, u1_scan_type; |
| UWORD8 *pu1_new_tu_coeff_data; |
| WORD32 trans_size; |
| WORD32 xs, ys; |
| WORD32 trans_skip; |
| WORD16 iquant_out; |
| WORD32 shift_iq; |
| { |
| WORD32 bit_depth; |
| |
| bit_depth = 8 + 0; |
| shift_iq = bit_depth + log2_trans_size - 5; |
| } |
| trans_size = (1 << log2_trans_size); |
| |
| /* First byte points to number of coded blocks */ |
| u1_num_coded_sblks = *pu1_tu_coeff_data++; |
| |
| /* Next byte points to scan type */ |
| u1_scan_type = *pu1_tu_coeff_data++; |
| /* 0th bit has trans_skip */ |
| trans_skip = u1_scan_type & 1; |
| u1_scan_type >>= 1; |
| |
| pi2_sblk_ptr = pi2_tu_coeff; |
| |
| /* Initially all columns are assumed to be zero */ |
| *pu4_zero_cols = 0xFFFFFFFF; |
| /* Initially all rows are assumed to be zero */ |
| *pu4_zero_rows = 0xFFFFFFFF; |
| |
| ps_tu_sblk_coeff_data = (tu_sblk_coeff_data_t *)(pu1_tu_coeff_data); |
| |
| if(trans_skip) |
| memset(pi2_tu_coeff, 0, trans_size * trans_size * sizeof(WORD16)); |
| |
| STATS_INIT_SBLK_AND_COEFF_POS(); |
| |
| /* DC only case */ |
| if((e_trans_type != DST_4x4) && (1 == u1_num_coded_sblks) |
| && (0 == ps_tu_sblk_coeff_data->u2_subblk_pos) |
| && (1 == ps_tu_sblk_coeff_data->u2_sig_coeff_map)) |
| { |
| *pu4_coeff_type = 1; |
| |
| if(!trans_quant_bypass) |
| { |
| if(4 == trans_size) |
| { |
| IQUANT_4x4(iquant_out, |
| ps_tu_sblk_coeff_data->ai2_level[0], |
| pi2_dequant_matrix[0] |
| * g_ihevc_iquant_scales[qp_rem], |
| shift_iq, qp_div); |
| } |
| else |
| { |
| IQUANT(iquant_out, ps_tu_sblk_coeff_data->ai2_level[0], |
| pi2_dequant_matrix[0] * g_ihevc_iquant_scales[qp_rem], |
| shift_iq, qp_div); |
| } |
| if(trans_skip) |
| iquant_out = (iquant_out + 16) >> 5; |
| } |
| else |
| { |
| /* setting the column to zero */ |
| for(i = 0; i < trans_size; i++) |
| *(pi2_tu_coeff + i * trans_size) = 0; |
| |
| iquant_out = ps_tu_sblk_coeff_data->ai2_level[0]; |
| } |
| *pi2_coeff_value = iquant_out; |
| *pi2_tu_coeff = iquant_out; |
| *pu4_zero_cols &= ~0x1; |
| *pu4_zero_rows &= ~0x1; |
| ps_tu_sblk_coeff_data = |
| (void *)&ps_tu_sblk_coeff_data->ai2_level[1]; |
| |
| STATS_UPDATE_COEFF_COUNT(); |
| STATS_LAST_SBLK_POS_UPDATE(e_trans_type, (trans_skip || trans_quant_bypass), 0, 0); |
| STATS_UPDATE_SBLK_AND_COEFF_HISTOGRAM(e_trans_type, (trans_quant_bypass || trans_skip)); |
| return ((UWORD8 *)ps_tu_sblk_coeff_data); |
| } |
| else |
| { |
| *pu4_coeff_type = 0; |
| /* In case of trans skip, memset has already happened */ |
| if(!trans_skip) |
| memset(pi2_tu_coeff, 0, trans_size * trans_size * sizeof(WORD16)); |
| } |
| |
| for(i = 0; i < u1_num_coded_sblks; i++) |
| { |
| UWORD32 u4_sig_coeff_map; |
| subblk_pos_x = ps_tu_sblk_coeff_data->u2_subblk_pos & 0x00FF; |
| subblk_pos_y = (ps_tu_sblk_coeff_data->u2_subblk_pos & 0xFF00) >> 8; |
| |
| STATS_LAST_SBLK_POS_UPDATE(e_trans_type, (trans_skip || trans_quant_bypass), subblk_pos_x, subblk_pos_y); |
| |
| subblk_pos_x = subblk_pos_x * MIN_TU_SIZE; |
| subblk_pos_y = subblk_pos_y * MIN_TU_SIZE; |
| |
| pi2_sblk_ptr = pi2_tu_coeff + subblk_pos_y * trans_size |
| + subblk_pos_x; |
| |
| //*pu4_zero_cols &= ~(0xF << subblk_pos_x); |
| |
| sblk_non_zero_coeff_idx = 0; |
| u4_sig_coeff_map = ps_tu_sblk_coeff_data->u2_sig_coeff_map; |
| //for(sblk_scan_idx = (31 - CLZ(u4_sig_coeff_map)); sblk_scan_idx >= 0; sblk_scan_idx--) |
| sblk_scan_idx = 31; |
| do |
| { |
| WORD32 clz = CLZ(u4_sig_coeff_map); |
| |
| sblk_scan_idx -= clz; |
| /* when clz is 31, u4_sig_coeff_map << (clz+1) might result in unknown behaviour in some cases */ |
| /* Hence either use SHL which takes care of handling these issues based on platform or shift in two stages */ |
| u4_sig_coeff_map = u4_sig_coeff_map << clz; |
| /* Copying coeffs and storing in reverse order */ |
| { |
| STATS_UPDATE_COEFF_COUNT(); |
| coeff_raster_idx = |
| gau1_ihevc_invscan4x4[u1_scan_type][sblk_scan_idx]; |
| |
| xs = coeff_raster_idx & 0x3; |
| ys = coeff_raster_idx >> 2; |
| |
| if(!trans_quant_bypass) |
| { |
| if(4 == trans_size) |
| { |
| IQUANT_4x4(iquant_out, |
| ps_tu_sblk_coeff_data->ai2_level[sblk_non_zero_coeff_idx], |
| pi2_dequant_matrix[(subblk_pos_x + xs) |
| + (subblk_pos_y + ys) |
| * trans_size] |
| * g_ihevc_iquant_scales[qp_rem], |
| shift_iq, qp_div); |
| sblk_non_zero_coeff_idx++; |
| } |
| else |
| { |
| IQUANT(iquant_out, |
| ps_tu_sblk_coeff_data->ai2_level[sblk_non_zero_coeff_idx], |
| pi2_dequant_matrix[(subblk_pos_x + xs) |
| + (subblk_pos_y + ys) |
| * trans_size] |
| * g_ihevc_iquant_scales[qp_rem], |
| shift_iq, qp_div); |
| sblk_non_zero_coeff_idx++; |
| } |
| |
| if(trans_skip) |
| iquant_out = (iquant_out + 16) >> 5; |
| } |
| else |
| { |
| iquant_out = ps_tu_sblk_coeff_data->ai2_level[sblk_non_zero_coeff_idx++]; |
| } |
| *pu4_zero_cols &= ~(0x1 << (subblk_pos_x + xs)); |
| *pu4_zero_rows &= ~(0x1 << (subblk_pos_y + ys)); |
| *(pi2_sblk_ptr + xs + ys * trans_size) = iquant_out; |
| } |
| sblk_scan_idx--; |
| u4_sig_coeff_map <<= 1; |
| |
| }while(u4_sig_coeff_map); |
| /* Updating the sblk pointer */ |
| ps_tu_sblk_coeff_data = |
| (void *)&ps_tu_sblk_coeff_data->ai2_level[sblk_non_zero_coeff_idx]; |
| } |
| |
| STATS_UPDATE_SBLK_AND_COEFF_HISTOGRAM(e_trans_type, (trans_quant_bypass || trans_skip)); |
| |
| pu1_new_tu_coeff_data = (UWORD8 *)ps_tu_sblk_coeff_data; |
| |
| return pu1_new_tu_coeff_data; |
| } |
| |
| WORD32 ihevcd_get_intra_nbr_flag(process_ctxt_t *ps_proc, |
| tu_t *ps_tu, |
| UWORD32 *pu4_intra_nbr_avail, |
| WORD16 i2_pic_width_in_luma_samples, |
| UWORD8 i1_constrained_intra_pred_flag, |
| WORD32 trans_size, |
| WORD32 ctb_size) |
| { |
| sps_t *ps_sps; |
| UWORD8 u1_bot_lt_avail, u1_left_avail, u1_top_avail, u1_top_rt_avail, |
| u1_top_lt_avail; |
| WORD32 x_cur, y_cur, x_nbr, y_nbr; |
| UWORD8 *pu1_nbr_intra_flag; |
| UWORD8 *pu1_pic_intra_flag; |
| UWORD8 top_right, top, top_left, left, bot_left; |
| WORD32 intra_pos; |
| WORD32 num_8_blks, num_8_blks_in_bits; |
| WORD32 numbytes_row = (i2_pic_width_in_luma_samples + 63) / 64; |
| WORD32 cur_x, cur_y; |
| WORD32 i; |
| WORD32 nbr_flags; |
| |
| ps_sps = ps_proc->ps_sps; |
| cur_x = ps_tu->b4_pos_x; |
| cur_y = ps_tu->b4_pos_y; |
| |
| u1_bot_lt_avail = (pu4_intra_nbr_avail[1 + cur_y + trans_size / MIN_TU_SIZE] |
| >> (31 - (1 + cur_x - 1))) & 1; |
| u1_left_avail = (pu4_intra_nbr_avail[1 + cur_y] >> (31 - (1 + cur_x - 1))) |
| & 1; |
| u1_top_avail = (pu4_intra_nbr_avail[1 + cur_y - 1] >> (31 - (1 + cur_x))) |
| & 1; |
| u1_top_rt_avail = (pu4_intra_nbr_avail[1 + cur_y - 1] |
| >> (31 - (1 + cur_x + trans_size / MIN_TU_SIZE))) & 1; |
| u1_top_lt_avail = (pu4_intra_nbr_avail[1 + cur_y - 1] |
| >> (31 - (1 + cur_x - 1))) & 1; |
| |
| x_cur = ps_proc->i4_ctb_x * ctb_size + cur_x * MIN_TU_SIZE; |
| y_cur = ps_proc->i4_ctb_y * ctb_size + cur_y * MIN_TU_SIZE; |
| |
| pu1_pic_intra_flag = ps_proc->pu1_pic_intra_flag; |
| |
| /* WORD32 nbr_flags as below MSB --> LSB */ |
| /* Top-Left | Top-Right | Top | Left | Bottom-Left |
| * 1 4 4 4 4 |
| */ |
| bot_left = 0; |
| left = 0; |
| top_right = 0; |
| top = 0; |
| top_left = 0; |
| |
| num_8_blks = trans_size > 4 ? trans_size / 8 : 1; |
| num_8_blks_in_bits = ((1 << num_8_blks) - 1); |
| |
| if(i1_constrained_intra_pred_flag) |
| { |
| /* TODO: constrained intra pred not tested */ |
| if(u1_bot_lt_avail) |
| { |
| x_nbr = x_cur - 1; |
| y_nbr = y_cur + trans_size; |
| |
| pu1_nbr_intra_flag = pu1_pic_intra_flag + y_nbr / 8 * numbytes_row |
| + x_nbr / 64; |
| intra_pos = ((x_nbr / 8) % 8); |
| for(i = 0; i < num_8_blks; i++) |
| { |
| bot_left |= ((*(pu1_nbr_intra_flag + i * numbytes_row) |
| >> intra_pos) & 1) << i; |
| } |
| bot_left &= num_8_blks_in_bits; |
| } |
| if(u1_left_avail) |
| { |
| x_nbr = x_cur - 1; |
| y_nbr = y_cur; |
| |
| pu1_nbr_intra_flag = pu1_pic_intra_flag + y_nbr / 8 * numbytes_row |
| + x_nbr / 64; |
| intra_pos = ((x_nbr / 8) % 8); |
| |
| for(i = 0; i < num_8_blks; i++) |
| { |
| left |= ((*(pu1_nbr_intra_flag + i * numbytes_row) >> intra_pos) |
| & 1) << i; |
| } |
| left &= num_8_blks_in_bits; |
| } |
| if(u1_top_avail) |
| { |
| x_nbr = x_cur; |
| y_nbr = y_cur - 1; |
| |
| pu1_nbr_intra_flag = pu1_pic_intra_flag + y_nbr / 8 * numbytes_row |
| + x_nbr / 64; |
| intra_pos = ((x_nbr / 8) % 8); |
| |
| top = (*pu1_nbr_intra_flag >> intra_pos); |
| top &= num_8_blks_in_bits; |
| /* |
| for(i=0;i<num_8_blks;i++) |
| { |
| top |= ( (*pu1_nbr_intra_flag >> (intra_pos+i)) & 1) << i; |
| } |
| */ |
| } |
| if(u1_top_rt_avail) |
| { |
| x_nbr = x_cur + trans_size; |
| y_nbr = y_cur - 1; |
| |
| pu1_nbr_intra_flag = pu1_pic_intra_flag + y_nbr / 8 * numbytes_row |
| + x_nbr / 64; |
| intra_pos = ((x_nbr / 8) % 8); |
| |
| top_right = (*pu1_nbr_intra_flag >> intra_pos); |
| top_right &= num_8_blks_in_bits; |
| /* |
| for(i=0;i<num_8_blks;i++) |
| { |
| top_right |= ( (*pu1_nbr_intra_flag >> (intra_pos+i)) & 1) << i; |
| } |
| */ |
| } |
| if(u1_top_lt_avail) |
| { |
| x_nbr = x_cur - 1; |
| y_nbr = y_cur - 1; |
| |
| pu1_nbr_intra_flag = pu1_pic_intra_flag + y_nbr / 8 * numbytes_row |
| + x_nbr / 64; |
| intra_pos = ((x_nbr / 8) % 8); |
| |
| top_left = (*pu1_nbr_intra_flag >> intra_pos) & 1; |
| } |
| } |
| else |
| { |
| if(u1_top_avail) |
| top = 0xF; |
| if(u1_top_rt_avail) |
| top_right = 0xF; |
| if(u1_bot_lt_avail) |
| bot_left = 0xF; |
| if(u1_left_avail) |
| left = 0xF; |
| if(u1_top_lt_avail) |
| top_left = 0x1; |
| } |
| |
| /* Handling incomplete CTBs */ |
| { |
| WORD32 pu_size_limit = MIN(trans_size, 8); |
| WORD32 cols_remaining = ps_sps->i2_pic_width_in_luma_samples |
| - (ps_proc->i4_ctb_x << ps_sps->i1_log2_ctb_size) |
| - (ps_tu->b4_pos_x * MIN_TU_SIZE) |
| - (1 << (ps_tu->b3_size + 2)); |
| /* ctb_size_top gives number of valid pixels remaining in the current row */ |
| WORD32 ctb_size_top = MIN(ctb_size, cols_remaining); |
| WORD32 ctb_size_top_bits = (1 << (ctb_size_top / pu_size_limit)) - 1; |
| |
| WORD32 rows_remaining = ps_sps->i2_pic_height_in_luma_samples |
| - (ps_proc->i4_ctb_y << ps_sps->i1_log2_ctb_size) |
| - (ps_tu->b4_pos_y * MIN_TU_SIZE) |
| - (1 << (ps_tu->b3_size + 2)); |
| /* ctb_size_bot gives number of valid pixels remaining in the current column */ |
| WORD32 ctb_size_bot = MIN(ctb_size, rows_remaining); |
| WORD32 ctb_size_bot_bits = (1 << (ctb_size_bot / pu_size_limit)) - 1; |
| |
| top_right &= ctb_size_top_bits; |
| bot_left &= ctb_size_bot_bits; |
| } |
| |
| /* Top-Left | Top-Right | Top | Left | Bottom-Left |
| * 1 4 4 4 4 |
| */ |
| |
| /* |
| nbr_flags = (top_left << 16) | (gau4_ihevcd_4_bit_reverse[top_right] << 12) | (gau4_ihevcd_4_bit_reverse[top] << 8) | (gau4_ihevcd_4_bit_reverse[left] << 4) |
| | gau4_ihevcd_4_bit_reverse[bot_left]; |
| */ |
| nbr_flags = (top_left << 16) | (top_right << 12) | (top << 8) | (gau4_ihevcd_4_bit_reverse[left] << 4) |
| | gau4_ihevcd_4_bit_reverse[bot_left]; |
| |
| |
| return nbr_flags; |
| |
| } |
| |
| WORD32 ihevcd_iquant_itrans_recon_ctb(process_ctxt_t *ps_proc) |
| { |
| WORD16 *pi2_scaling_mat; |
| UWORD8 *pu1_y_dst_ctb; |
| UWORD8 *pu1_uv_dst_ctb; |
| WORD32 ctb_size; |
| codec_t *ps_codec; |
| slice_header_t *ps_slice_hdr; |
| tu_t *ps_tu; |
| WORD16 *pi2_ctb_coeff; |
| WORD32 tu_cnt; |
| WORD16 *pi2_tu_coeff; |
| WORD16 *pi2_tmp; |
| WORD32 pic_strd; |
| WORD32 luma_nbr_flags; |
| WORD32 chroma_nbr_flags = 0; |
| UWORD8 u1_luma_pred_mode_first_tu = 0; |
| /* Pointers for generating 2d coeffs from coeff-map */ |
| UWORD8 *pu1_tu_coeff_data; |
| /* nbr avail map for CTB */ |
| /* 1st bit points to neighbor (left/top_left/bot_left) */ |
| /* 1Tb starts at 2nd bit from msb of 2nd value in array, followed by number of min_tu's in that ctb */ |
| UWORD32 au4_intra_nbr_avail[MAX_CTB_SIZE / MIN_TU_SIZE |
| + 2 /* Top nbr + bot nbr */]; UWORD32 |
| top_avail_bits; |
| sps_t *ps_sps; |
| pps_t *ps_pps; |
| WORD32 intra_flag; |
| UWORD8 *pu1_pic_intra_flag; |
| /*************************************************************************/ |
| /* Contanis scaling matrix offset in the following order in a 1D buffer */ |
| /* Intra 4 x 4 Y, 4 x 4 U, 4 x 4 V */ |
| /* Inter 4 x 4 Y, 4 x 4 U, 4 x 4 V */ |
| /* Intra 8 x 8 Y, 8 x 8 U, 8 x 8 V */ |
| /* Inter 8 x 8 Y, 8 x 8 U, 8 x 8 V */ |
| /* Intra 16x16 Y, 16x16 U, 16x16 V */ |
| /* Inter 16x16 Y, 16x16 U, 16x16 V */ |
| /* Intra 32x32 Y */ |
| /* Inter 32x32 Y */ |
| /*************************************************************************/ |
| /* Only first 20 entries are used. Array is extended to avoid out of bound |
| reads. Skip CUs (64x64) read this table, but don't really use the value */ |
| static const WORD32 scaling_mat_offset[] = |
| { 0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, |
| 1248, 1504, 1760, 2016, 3040, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| |
| PROFILE_DISABLE_IQ_IT_RECON_INTRA_PRED(); |
| |
| ps_sps = ps_proc->ps_sps; |
| ps_pps = ps_proc->ps_pps; |
| ps_slice_hdr = ps_proc->ps_slice_hdr; |
| ps_codec = ps_proc->ps_codec; |
| |
| pu1_y_dst_ctb = ps_proc->pu1_cur_ctb_luma; |
| pu1_uv_dst_ctb = ps_proc->pu1_cur_ctb_chroma; |
| |
| pi2_ctb_coeff = ps_proc->pi2_invscan_out; |
| |
| ctb_size = (1 << ps_sps->i1_log2_ctb_size); |
| pu1_tu_coeff_data = (UWORD8 *)ps_proc->pv_tu_coeff_data; |
| |
| pic_strd = ps_codec->i4_strd; |
| |
| pi2_tmp = ps_proc->pi2_itrans_intrmd_buf; |
| |
| pi2_tu_coeff = pi2_ctb_coeff; |
| |
| ps_tu = ps_proc->ps_tu; |
| |
| if((1 == ps_sps->i1_scaling_list_enable_flag) && (1 == ps_pps->i1_pps_scaling_list_data_present_flag)) |
| { |
| pi2_scaling_mat = ps_pps->pi2_scaling_mat; |
| } |
| else |
| { |
| pi2_scaling_mat = ps_sps->pi2_scaling_mat; |
| } |
| |
| { |
| /* Updating the initial availability map */ |
| WORD32 i; |
| UWORD8 u1_left_ctb_avail, u1_top_lt_ctb_avail, u1_top_rt_ctb_avail, |
| u1_top_ctb_avail; |
| |
| u1_left_ctb_avail = ps_proc->u1_left_ctb_avail; |
| u1_top_lt_ctb_avail = ps_proc->u1_top_lt_ctb_avail; |
| u1_top_ctb_avail = ps_proc->u1_top_ctb_avail; |
| u1_top_rt_ctb_avail = ps_proc->u1_top_rt_ctb_avail; |
| |
| /* Initializing the availability array */ |
| memset(au4_intra_nbr_avail, 0, |
| (MAX_CTB_SIZE / MIN_TU_SIZE + 2) * sizeof(UWORD32)); |
| /* Initializing the availability array with CTB level availability flags */ |
| { |
| WORD32 rows_remaining = ps_sps->i2_pic_height_in_luma_samples - (ps_proc->i4_ctb_y << ps_sps->i1_log2_ctb_size); |
| WORD32 ctb_size_left = MIN(ctb_size, rows_remaining); |
| for(i = 0; i < ctb_size_left / MIN_TU_SIZE; i++) |
| { |
| au4_intra_nbr_avail[i + 1] = ((UWORD32)u1_left_ctb_avail << 31); |
| } |
| } |
| au4_intra_nbr_avail[0] |= (((UWORD32)u1_top_rt_ctb_avail << 31) |
| >> (1 + ctb_size / MIN_TU_SIZE)); /* 1+ctb_size/4 position bit pos from msb */ |
| |
| au4_intra_nbr_avail[0] |= ((UWORD32)u1_top_lt_ctb_avail << 31); |
| |
| { |
| WORD32 cols_remaining = ps_sps->i2_pic_width_in_luma_samples - (ps_proc->i4_ctb_x << ps_sps->i1_log2_ctb_size); |
| WORD32 ctb_size_top = MIN(ctb_size, cols_remaining); |
| WORD32 shift = (31 - (ctb_size / MIN_TU_SIZE)); |
| |
| /* ctb_size_top gives number of valid pixels remaining in the current row */ |
| /* Since we need pattern of 1's starting from the MSB, an additional shift */ |
| /* is needed */ |
| shift += ((ctb_size - ctb_size_top) / MIN_TU_SIZE); |
| |
| top_avail_bits = ((1 << (ctb_size_top / MIN_TU_SIZE)) - 1) |
| << shift; |
| } |
| au4_intra_nbr_avail[0] |= ( |
| (u1_top_ctb_avail == 1) ? top_avail_bits : 0x0); |
| /* Starting from msb 2nd bit to (1+ctb_size/4) bit, set 1 if top avail,or 0 */ |
| |
| } |
| |
| /* Applying Inverse transform on all the TU's in CTB */ |
| for(tu_cnt = 0; tu_cnt < ps_proc->i4_ctb_tu_cnt; tu_cnt++, ps_tu++) |
| { |
| WORD32 transform_skip_flag = 0; |
| WORD32 transform_skip_flag_v = 0; |
| WORD32 num_comp, c_idx, func_idx; |
| WORD32 src_strd, pred_strd, dst_strd; |
| WORD32 qp_div = 0, qp_rem = 0; |
| WORD32 qp_div_v = 0, qp_rem_v = 0; |
| UWORD32 zero_cols = 0, zero_cols_v = 0; |
| UWORD32 zero_rows = 0, zero_rows_v = 0; |
| UWORD32 coeff_type = 0, coeff_type_v = 0; |
| WORD16 i2_coeff_value, i2_coeff_value_v; |
| WORD32 trans_size = 0; |
| TRANSFORM_TYPE e_trans_type; |
| WORD32 log2_y_trans_size_minus_2, log2_uv_trans_size_minus_2; |
| WORD32 log2_trans_size; |
| WORD32 chroma_qp_idx; |
| WORD16 *pi2_src = NULL, *pi2_src_v = NULL; |
| UWORD8 *pu1_pred = NULL, *pu1_pred_v = NULL; |
| UWORD8 *pu1_dst = NULL, *pu1_dst_v = NULL; |
| WORD16 *pi2_dequant_matrix = NULL, *pi2_dequant_matrix_v = NULL; |
| WORD32 tu_x, tu_y; |
| WORD32 tu_y_offset, tu_uv_offset; |
| WORD8 i1_chroma_pic_qp_offset, i1_chroma_slice_qp_offset; |
| UWORD8 u1_cbf = 0, u1_cbf_v = 0, u1_luma_pred_mode, u1_chroma_pred_mode; |
| WORD32 luma_nbr_flags_4x4[4]; |
| WORD32 offset; |
| WORD32 pcm_flag; |
| WORD32 chroma_yuv420sp_vu = (ps_codec->e_ref_chroma_fmt == IV_YUV_420SP_VU); |
| /* If 420SP_VU is chroma format, pred and dst pointer */ |
| /* will be added +1 to point to U */ |
| WORD32 chroma_yuv420sp_vu_u_offset = 1 * chroma_yuv420sp_vu; |
| /* If 420SP_VU is chroma format, pred and dst pointer */ |
| /* will be added U offset of +1 and subtracted 2 */ |
| /* to point to V */ |
| WORD32 chroma_yuv420sp_vu_v_offset = -2 * chroma_yuv420sp_vu; |
| |
| tu_x = ps_tu->b4_pos_x * 4; /* Converting minTU unit to pixel unit */ |
| tu_y = ps_tu->b4_pos_y * 4; /* Converting minTU unit to pixel unit */ |
| { |
| WORD32 tu_abs_x = (ps_proc->i4_ctb_x << ps_sps->i1_log2_ctb_size) + (tu_x); |
| WORD32 tu_abs_y = (ps_proc->i4_ctb_y << ps_sps->i1_log2_ctb_size) + (tu_y); |
| |
| WORD32 numbytes_row = (ps_sps->i2_pic_width_in_luma_samples + 63) / 64; |
| |
| pu1_pic_intra_flag = ps_proc->pu1_pic_intra_flag; |
| pu1_pic_intra_flag += (tu_abs_y >> 3) * numbytes_row; |
| pu1_pic_intra_flag += (tu_abs_x >> 6); |
| |
| intra_flag = *pu1_pic_intra_flag; |
| intra_flag &= (1 << ((tu_abs_x >> 3) % 8)); |
| } |
| |
| u1_luma_pred_mode = ps_tu->b6_luma_intra_mode; |
| u1_chroma_pred_mode = ps_tu->b3_chroma_intra_mode_idx; |
| |
| if(u1_chroma_pred_mode != 7) |
| num_comp = 2; /* Y and UV */ |
| else |
| num_comp = 1; /* Y */ |
| |
| |
| pcm_flag = 0; |
| |
| if((intra_flag) && (u1_luma_pred_mode == INTRA_PRED_NONE)) |
| { |
| UWORD8 *pu1_buf; |
| UWORD8 *pu1_y_dst = pu1_y_dst_ctb; |
| UWORD8 *pu1_uv_dst = pu1_uv_dst_ctb; |
| WORD32 i, j; |
| tu_sblk_coeff_data_t *ps_tu_sblk_coeff_data; |
| WORD32 cb_size = 1 << (ps_tu->b3_size + 2); |
| |
| /* trans_size is used to update availability after reconstruction */ |
| trans_size = cb_size; |
| |
| pcm_flag = 1; |
| |
| tu_y_offset = tu_x + tu_y * pic_strd; |
| pu1_y_dst += tu_x + tu_y * pic_strd; |
| pu1_uv_dst += tu_x + (tu_y >> 1) * pic_strd; |
| |
| /* First byte points to number of coded blocks */ |
| pu1_tu_coeff_data++; |
| |
| /* Next byte points to scan type */ |
| pu1_tu_coeff_data++; |
| |
| ps_tu_sblk_coeff_data = (tu_sblk_coeff_data_t *)pu1_tu_coeff_data; |
| |
| pu1_buf = (UWORD8 *)&ps_tu_sblk_coeff_data->ai2_level[0]; |
| { |
| |
| for(i = 0; i < cb_size; i++) |
| { |
| //pu1_y_dst[i * pic_strd + j] = *pu1_buf++; |
| memcpy(&pu1_y_dst[i * pic_strd], pu1_buf, cb_size); |
| pu1_buf += cb_size; |
| } |
| |
| pu1_uv_dst = pu1_uv_dst + chroma_yuv420sp_vu_u_offset; |
| |
| /* U */ |
| for(i = 0; i < cb_size / 2; i++) |
| { |
| for(j = 0; j < cb_size / 2; j++) |
| { |
| pu1_uv_dst[i * pic_strd + 2 * j] = *pu1_buf++; |
| } |
| } |
| |
| pu1_uv_dst = pu1_uv_dst + 1 + chroma_yuv420sp_vu_v_offset; |
| |
| /* V */ |
| for(i = 0; i < cb_size / 2; i++) |
| { |
| for(j = 0; j < cb_size / 2; j++) |
| { |
| pu1_uv_dst[i * pic_strd + 2 * j] = *pu1_buf++; |
| } |
| } |
| } |
| |
| pu1_tu_coeff_data = pu1_buf; |
| |
| } |
| |
| |
| |
| |
| |
| for(c_idx = 0; c_idx < num_comp; c_idx++) |
| { |
| if(0 == pcm_flag) |
| { |
| /* Initializing variables */ |
| pred_strd = pic_strd; |
| dst_strd = pic_strd; |
| |
| if(c_idx == 0) /* Y */ |
| { |
| log2_y_trans_size_minus_2 = ps_tu->b3_size; |
| trans_size = 1 << (log2_y_trans_size_minus_2 + 2); |
| log2_trans_size = log2_y_trans_size_minus_2 + 2; |
| |
| tu_y_offset = tu_x + tu_y * pic_strd; |
| |
| pi2_src = pi2_tu_coeff; |
| pu1_pred = pu1_y_dst_ctb + tu_y_offset; |
| pu1_dst = pu1_y_dst_ctb + tu_y_offset; |
| |
| /* Calculating scaling matrix offset */ |
| offset = log2_y_trans_size_minus_2 * 6 |
| + (!intra_flag) |
| * ((log2_y_trans_size_minus_2 |
| == 3) ? 1 : 3) |
| + c_idx; |
| pi2_dequant_matrix = pi2_scaling_mat |
| + scaling_mat_offset[offset]; |
| |
| src_strd = trans_size; |
| |
| /* 4x4 transform Luma in INTRA mode is DST */ |
| if(log2_y_trans_size_minus_2 == 0 && intra_flag) |
| { |
| func_idx = log2_y_trans_size_minus_2; |
| e_trans_type = DST_4x4; |
| } |
| else |
| { |
| func_idx = log2_y_trans_size_minus_2 + 1; |
| e_trans_type = (TRANSFORM_TYPE)(log2_y_trans_size_minus_2 + 1); |
| } |
| |
| qp_div = ps_tu->b7_qp / 6; |
| qp_rem = ps_tu->b7_qp % 6; |
| |
| u1_cbf = ps_tu->b1_y_cbf; |
| |
| transform_skip_flag = pu1_tu_coeff_data[1] & 1; |
| /* Unpacking coeffs */ |
| if(1 == u1_cbf) |
| { |
| pu1_tu_coeff_data = ihevcd_unpack_coeffs( |
| pi2_src, log2_y_trans_size_minus_2 + 2, |
| pu1_tu_coeff_data, pi2_dequant_matrix, |
| qp_rem, qp_div, e_trans_type, |
| ps_tu->b1_transquant_bypass, &zero_cols, |
| &zero_rows, &coeff_type, |
| &i2_coeff_value); |
| } |
| } |
| else /* UV interleaved */ |
| { |
| /* Chroma :If Transform size is 4x4, keep 4x4 else do transform on (trans_size/2 x trans_size/2) */ |
| if(ps_tu->b3_size == 0) |
| { |
| /* Chroma 4x4 is present with 4th luma 4x4 block. For this case chroma postion has to be (luma pos x- 4,luma pos y- 4) */ |
| log2_uv_trans_size_minus_2 = ps_tu->b3_size; |
| tu_uv_offset = (tu_x - 4) + ((tu_y - 4) / 2) * pic_strd; |
| } |
| else |
| { |
| log2_uv_trans_size_minus_2 = ps_tu->b3_size - 1; |
| tu_uv_offset = tu_x + (tu_y >> 1) * pic_strd; |
| } |
| trans_size = 1 << (log2_uv_trans_size_minus_2 + 2); |
| log2_trans_size = log2_uv_trans_size_minus_2 + 2; |
| |
| pi2_src = pi2_tu_coeff; |
| pi2_src_v = pi2_tu_coeff + trans_size * trans_size; |
| pu1_pred = pu1_uv_dst_ctb + tu_uv_offset + chroma_yuv420sp_vu_u_offset; /* Pointing to start byte of U*/ |
| pu1_pred_v = pu1_pred + 1 + chroma_yuv420sp_vu_v_offset; /* Pointing to start byte of V*/ |
| pu1_dst = pu1_uv_dst_ctb + tu_uv_offset + chroma_yuv420sp_vu_u_offset; /* Pointing to start byte of U*/ |
| pu1_dst_v = pu1_dst + 1 + chroma_yuv420sp_vu_v_offset; /* Pointing to start byte of V*/ |
| |
| /*TODO: Add support for choosing different tables for U and V, |
| * change this to a single array to handle flat/default/custom, intra/inter, luma/chroma and various sizes |
| */ |
| /* Calculating scaling matrix offset */ |
| /* ((log2_uv_trans_size_minus_2 == 3) ? 1:3) condition check is not needed, since |
| * max uv trans size is 16x16 |
| */ |
| offset = log2_uv_trans_size_minus_2 * 6 |
| + (!intra_flag) * 3 + c_idx; |
| pi2_dequant_matrix = pi2_scaling_mat |
| + scaling_mat_offset[offset]; |
| pi2_dequant_matrix_v = pi2_scaling_mat |
| + scaling_mat_offset[offset + 1]; |
| |
| src_strd = trans_size; |
| |
| func_idx = 1 + 4 + log2_uv_trans_size_minus_2; /* DST func + Y funcs + cur func index*/ |
| |
| /* Handle error cases where 64x64 TU is signalled which results in 32x32 chroma. |
| * By limiting func_idx to 7, max of 16x16 chroma is called */ |
| func_idx = MIN(func_idx, 7); |
| |
| e_trans_type = (TRANSFORM_TYPE)(log2_uv_trans_size_minus_2 + 1); |
| /* QP for U */ |
| i1_chroma_pic_qp_offset = ps_pps->i1_pic_cb_qp_offset; |
| i1_chroma_slice_qp_offset = ps_slice_hdr->i1_slice_cb_qp_offset; |
| u1_cbf = ps_tu->b1_cb_cbf; |
| |
| chroma_qp_idx = ps_tu->b7_qp + i1_chroma_pic_qp_offset |
| + i1_chroma_slice_qp_offset; |
| chroma_qp_idx = CLIP3(chroma_qp_idx, 0, 57); |
| qp_div = gai2_ihevcd_chroma_qp[chroma_qp_idx] / 6; |
| qp_rem = gai2_ihevcd_chroma_qp[chroma_qp_idx] % 6; |
| |
| /* QP for V */ |
| i1_chroma_pic_qp_offset = ps_pps->i1_pic_cr_qp_offset; |
| i1_chroma_slice_qp_offset = ps_slice_hdr->i1_slice_cr_qp_offset; |
| u1_cbf_v = ps_tu->b1_cr_cbf; |
| |
| chroma_qp_idx = ps_tu->b7_qp + i1_chroma_pic_qp_offset |
| + i1_chroma_slice_qp_offset; |
| chroma_qp_idx = CLIP3(chroma_qp_idx, 0, 57); |
| qp_div_v = gai2_ihevcd_chroma_qp[chroma_qp_idx] / 6; |
| qp_rem_v = gai2_ihevcd_chroma_qp[chroma_qp_idx] % 6; |
| |
| /* Unpacking coeffs */ |
| transform_skip_flag = pu1_tu_coeff_data[1] & 1; |
| if(1 == u1_cbf) |
| { |
| pu1_tu_coeff_data = ihevcd_unpack_coeffs( |
| pi2_src, log2_uv_trans_size_minus_2 + 2, |
| pu1_tu_coeff_data, pi2_dequant_matrix, |
| qp_rem, qp_div, e_trans_type, |
| ps_tu->b1_transquant_bypass, &zero_cols, |
| &zero_rows, &coeff_type, |
| &i2_coeff_value); |
| } |
| |
| transform_skip_flag_v = pu1_tu_coeff_data[1] & 1; |
| if(1 == u1_cbf_v) |
| { |
| pu1_tu_coeff_data = ihevcd_unpack_coeffs( |
| pi2_src_v, log2_uv_trans_size_minus_2 + 2, |
| pu1_tu_coeff_data, pi2_dequant_matrix_v, |
| qp_rem_v, qp_div_v, e_trans_type, |
| ps_tu->b1_transquant_bypass, &zero_cols_v, |
| &zero_rows_v, &coeff_type_v, &i2_coeff_value_v); |
| } |
| } |
| /***************************************************************/ |
| /****************** Intra Prediction **************************/ |
| /***************************************************************/ |
| if(intra_flag) /* Intra */ |
| { |
| /* While (MAX_TU_SIZE * 2 * 2) + 1 is the actaul size needed, |
| au1_ref_sub_out size is kept as multiple of 8, |
| so that SIMD functions can load 64 bits */ |
| UWORD8 au1_ref_sub_out[(MAX_TU_SIZE * 2 * 2) + 8]; |
| UWORD8 *pu1_top_left, *pu1_top, *pu1_left; |
| WORD32 luma_pred_func_idx, chroma_pred_func_idx; |
| |
| /* Get the neighbour availability flags */ |
| /* Done for only Y */ |
| if(c_idx == 0) |
| { |
| /* Get neighbor availability for Y only */ |
| luma_nbr_flags = ihevcd_get_intra_nbr_flag(ps_proc, |
| ps_tu, |
| au4_intra_nbr_avail, |
| ps_sps->i2_pic_width_in_luma_samples, |
| ps_pps->i1_constrained_intra_pred_flag, |
| trans_size, |
| ctb_size); |
| |
| if(trans_size == 4) |
| luma_nbr_flags_4x4[(ps_tu->b4_pos_x % 2) + (ps_tu->b4_pos_y % 2) * 2] = luma_nbr_flags; |
| |
| if((ps_tu->b4_pos_x % 2 == 0) && (ps_tu->b4_pos_y % 2 == 0)) |
| { |
| chroma_nbr_flags = luma_nbr_flags; |
| } |
| |
| /* Initializing nbr pointers */ |
| pu1_top = pu1_pred - pic_strd; |
| pu1_left = pu1_pred - 1; |
| pu1_top_left = pu1_pred - pic_strd - 1; |
| |
| /* call reference array substitution */ |
| if(luma_nbr_flags == 0x1ffff) |
| ps_codec->s_func_selector.ihevc_intra_pred_luma_ref_subst_all_avlble_fptr( |
| pu1_top_left, |
| pu1_top, pu1_left, pred_strd, trans_size, luma_nbr_flags, au1_ref_sub_out, 1); |
| else |
| ps_codec->s_func_selector.ihevc_intra_pred_luma_ref_substitution_fptr( |
| pu1_top_left, |
| pu1_top, pu1_left, pred_strd, trans_size, luma_nbr_flags, au1_ref_sub_out, 1); |
| |
| /* call reference filtering */ |
| ps_codec->s_func_selector.ihevc_intra_pred_ref_filtering_fptr( |
| au1_ref_sub_out, trans_size, |
| au1_ref_sub_out, |
| u1_luma_pred_mode, ps_sps->i1_strong_intra_smoothing_enable_flag); |
| |
| /* use the look up to get the function idx */ |
| luma_pred_func_idx = g_i4_ip_funcs[u1_luma_pred_mode]; |
| |
| /* call the intra prediction function */ |
| ps_codec->apf_intra_pred_luma[luma_pred_func_idx](au1_ref_sub_out, 1, pu1_pred, pred_strd, trans_size, u1_luma_pred_mode); |
| } |
| else |
| { |
| /* In case of yuv420sp_vu, prediction happens as usual. */ |
| /* So point the pu1_pred pointer to original prediction pointer */ |
| UWORD8 *pu1_pred_orig = pu1_pred - chroma_yuv420sp_vu_u_offset; |
| |
| /* Top-Left | Top-Right | Top | Left | Bottom-Left |
| * 1 4 4 4 4 |
| * |
| * Generating chroma_nbr_flags depending upon the transform size */ |
| if(ps_tu->b3_size == 0) |
| { |
| /* Take TL,T,L flags of First luma 4x4 block */ |
| chroma_nbr_flags = (luma_nbr_flags_4x4[0] & 0x10FF0); |
| /* Take TR flags of Second luma 4x4 block */ |
| chroma_nbr_flags |= (luma_nbr_flags_4x4[1] & 0x0F000); |
| /* Take BL flags of Third luma 4x4 block */ |
| chroma_nbr_flags |= (luma_nbr_flags_4x4[2] & 0x0000F); |
| } |
| |
| /* Initializing nbr pointers */ |
| pu1_top = pu1_pred_orig - pic_strd; |
| pu1_left = pu1_pred_orig - 2; |
| pu1_top_left = pu1_pred_orig - pic_strd - 2; |
| |
| /* Chroma pred mode derivation from luma pred mode */ |
| { |
| tu_t *ps_tu_tmp = ps_tu; |
| while(!ps_tu_tmp->b1_first_tu_in_cu) |
| { |
| ps_tu_tmp--; |
| } |
| u1_luma_pred_mode_first_tu = ps_tu_tmp->b6_luma_intra_mode; |
| } |
| if(4 == u1_chroma_pred_mode) |
| u1_chroma_pred_mode = u1_luma_pred_mode_first_tu; |
| else |
| { |
| u1_chroma_pred_mode = gau1_intra_pred_chroma_modes[u1_chroma_pred_mode]; |
| |
| if(u1_chroma_pred_mode == |
| u1_luma_pred_mode_first_tu) |
| { |
| u1_chroma_pred_mode = INTRA_ANGULAR(34); |
| } |
| } |
| |
| /* call the chroma reference array substitution */ |
| ps_codec->s_func_selector.ihevc_intra_pred_chroma_ref_substitution_fptr( |
| pu1_top_left, |
| pu1_top, pu1_left, pic_strd, trans_size, chroma_nbr_flags, au1_ref_sub_out, 1); |
| |
| /* use the look up to get the function idx */ |
| chroma_pred_func_idx = |
| g_i4_ip_funcs[u1_chroma_pred_mode]; |
| |
| /* call the intra prediction function */ |
| ps_codec->apf_intra_pred_chroma[chroma_pred_func_idx](au1_ref_sub_out, 1, pu1_pred_orig, pred_strd, trans_size, u1_chroma_pred_mode); |
| } |
| } |
| |
| /* Updating number of transform types */ |
| STATS_UPDATE_ALL_TRANS(e_trans_type, c_idx); |
| |
| /* IQ, IT and Recon for Y if c_idx == 0, and U if c_idx !=0 */ |
| if(1 == u1_cbf) |
| { |
| if(ps_tu->b1_transquant_bypass || transform_skip_flag) |
| { |
| /* Recon */ |
| ps_codec->apf_recon[func_idx](pi2_src, pu1_pred, pu1_dst, |
| src_strd, pred_strd, dst_strd, |
| zero_cols); |
| } |
| else |
| { |
| |
| /* Updating coded number of transform types(excluding trans skip and trans quant skip) */ |
| STATS_UPDATE_CODED_TRANS(e_trans_type, c_idx, 0); |
| |
| /* iQuant , iTrans and Recon */ |
| if((0 == coeff_type)) |
| { |
| ps_codec->apf_itrans_recon[func_idx](pi2_src, pi2_tmp, |
| pu1_pred, pu1_dst, |
| src_strd, pred_strd, |
| dst_strd, zero_cols, |
| zero_rows); |
| } |
| else /* DC only */ |
| { |
| STATS_UPDATE_CODED_TRANS(e_trans_type, c_idx, 1); |
| ps_codec->apf_itrans_recon_dc[c_idx](pu1_pred, pu1_dst, |
| pred_strd, dst_strd, |
| log2_trans_size, |
| i2_coeff_value); |
| } |
| } |
| } |
| /* IQ, IT and Recon for V */ |
| if(c_idx != 0) |
| { |
| if(1 == u1_cbf_v) |
| { |
| if(ps_tu->b1_transquant_bypass || transform_skip_flag_v) |
| { |
| /* Recon */ |
| ps_codec->apf_recon[func_idx](pi2_src_v, pu1_pred_v, |
| pu1_dst_v, src_strd, |
| pred_strd, dst_strd, |
| zero_cols_v); |
| } |
| else |
| { |
| /* Updating number of transform types */ |
| STATS_UPDATE_CODED_TRANS(e_trans_type, c_idx, 0); |
| |
| /* iQuant , iTrans and Recon */ |
| if((0 == coeff_type_v)) |
| { |
| ps_codec->apf_itrans_recon[func_idx](pi2_src_v, |
| pi2_tmp, |
| pu1_pred_v, |
| pu1_dst_v, |
| src_strd, |
| pred_strd, |
| dst_strd, |
| zero_cols_v, |
| zero_rows_v); |
| } |
| else /* DC only */ |
| { |
| STATS_UPDATE_CODED_TRANS(e_trans_type, c_idx, 1); |
| ps_codec->apf_itrans_recon_dc[c_idx](pu1_pred_v, pu1_dst_v, |
| pred_strd, dst_strd, |
| log2_trans_size, |
| i2_coeff_value_v); |
| } |
| } |
| } |
| } |
| } |
| |
| /* Neighbor availability inside CTB */ |
| /* 1bit per 4x4. Indicates whether that 4x4 block has been reconstructed(avialable) */ |
| /* Used for neighbor availability in intra pred */ |
| if(c_idx == 0) |
| { |
| WORD32 i; |
| WORD32 trans_in_min_tu; |
| UWORD32 cur_tu_in_bits; |
| UWORD32 cur_tu_avail_flag; |
| |
| trans_in_min_tu = trans_size / MIN_TU_SIZE; |
| cur_tu_in_bits = (1 << trans_in_min_tu) - 1; |
| cur_tu_in_bits = cur_tu_in_bits << (32 - trans_in_min_tu); |
| |
| cur_tu_avail_flag = cur_tu_in_bits >> (ps_tu->b4_pos_x + 1); |
| |
| for(i = 0; i < trans_in_min_tu; i++) |
| au4_intra_nbr_avail[1 + ps_tu->b4_pos_y + i] |= |
| cur_tu_avail_flag; |
| } |
| } |
| } |
| ps_proc->pv_tu_coeff_data = pu1_tu_coeff_data; |
| |
| return ps_proc->i4_ctb_tu_cnt; |
| } |
| |
