/****************************************************************************** * * Copyright (C) 2015 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 ih264d_process_intra_mb.c * * \brief * Contains routines that decode a I slice type * * Detailed_description * * \date * 07/07/2003 * * \author NS ************************************************************************** */ #include #include "ih264d_bitstrm.h" #include "ih264d_defs.h" #include "ih264d_debug.h" #include "ih264d_tables.h" #include "ih264d_structs.h" #include "ih264d_defs.h" #include "ih264d_parse_cavlc.h" #include "ih264d_mb_utils.h" #include "ih264d_parse_slice.h" #include "ih264d_process_intra_mb.h" #include "ih264d_error_handler.h" #include "ih264d_quant_scaling.h" #include "ih264d_tables.h" /*! ************************************************************************** * \if Function name : ih264d_itrans_recon_luma_dc \endif * * \brief * This function does InvTransform, scaling and reconstruction of Luma DC. * * \return * 0 on Success and Error code otherwise ************************************************************************** */ void ih264d_itrans_recon_luma_dc(dec_struct_t *ps_dec, WORD16* pi2_src, WORD16* pi2_coeff_block, const UWORD16 *pu2_weigh_mat) { WORD32 i; WORD16 pi2_out[16]; WORD32 pi4_tmp[16]; WORD16 *pi2_out_ptr = &pi2_out[0]; PROFILE_DISABLE_IQ_IT_RECON_RETURN() ps_dec->pf_ihadamard_scaling_4x4(pi2_src, pi2_out, ps_dec->pu2_quant_scale_y, pu2_weigh_mat, ps_dec->u1_qp_y_div6, pi4_tmp); for(i = 0; i < 4; i++) { pi2_coeff_block[0] = pi2_out_ptr[0]; pi2_coeff_block[4 * 16] = pi2_out_ptr[4]; pi2_coeff_block[8 * 16] = pi2_out_ptr[8]; pi2_coeff_block[12 * 16] = pi2_out_ptr[12]; pi2_out_ptr++; /* Point to next column */ pi2_coeff_block += 16; } } /*! ************************************************************************** * \if Function name : ih264d_read_intra_pred_modes \endif * * \brief * Reads the intra pred mode related values of I4x4 MB from bitstream. * * This function will read the prev intra pred mode flags and * stores it in pu1_prev_intra4x4_pred_mode_flag. If the u4_flag * indicates that most probable mode is not intra pred mode, then * the rem_intra4x4_pred_mode is read and stored in * pu1_rem_intra4x4_pred_mode array. * * * \return * 0 on success and Error code otherwise * ************************************************************************** */ WORD32 ih264d_read_intra_pred_modes(dec_struct_t * ps_dec, UWORD8 * pu1_prev_intra4x4_pred_mode_flag, UWORD8 * pu1_rem_intra4x4_pred_mode, UWORD32 u4_trans_form8x8) { WORD32 i4x4_luma_blk_idx = 0, i8x8_luma_blk_idx = 0; dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm; if(!u4_trans_form8x8) { for(i4x4_luma_blk_idx = 0; i4x4_luma_blk_idx < 16; ++i4x4_luma_blk_idx) { UWORD32 u4_temp; SWITCHOFFTRACE; GETBIT(u4_temp, ps_bitstrm->u4_ofst, ps_bitstrm->pu4_buffer); *pu1_prev_intra4x4_pred_mode_flag = (UWORD8)u4_temp; if(!(*pu1_prev_intra4x4_pred_mode_flag)) { GETBITS(u4_temp, ps_bitstrm->u4_ofst, ps_bitstrm->pu4_buffer, 3); *(pu1_rem_intra4x4_pred_mode) = (UWORD8)u4_temp; } pu1_prev_intra4x4_pred_mode_flag++; pu1_rem_intra4x4_pred_mode++; } } else { /**********************************************************************/ /* prev_intra4x4_pred_modes to be interpreted as */ /* prev_intra8x8_pred_modes in case of transform 8x8 */ /**********************************************************************/ for(i8x8_luma_blk_idx = 0; i8x8_luma_blk_idx < 4; i8x8_luma_blk_idx++) { UWORD32 u4_temp; GETBIT(u4_temp, ps_bitstrm->u4_ofst, ps_bitstrm->pu4_buffer); *pu1_prev_intra4x4_pred_mode_flag = (UWORD8)u4_temp; if(!(*pu1_prev_intra4x4_pred_mode_flag)) { GETBITS(u4_temp, ps_bitstrm->u4_ofst, ps_bitstrm->pu4_buffer, 3); (*pu1_rem_intra4x4_pred_mode) = (UWORD8)u4_temp; } pu1_prev_intra4x4_pred_mode_flag++; pu1_rem_intra4x4_pred_mode++; } } return (0); } WORD32 ih264d_unpack_coeff4x4_4x4blk(dec_struct_t * ps_dec, WORD16 *pi2_out_coeff_data, UWORD8 *pu1_inv_scan) { tu_sblk4x4_coeff_data_t *ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *)ps_dec->pv_proc_tu_coeff_data; UWORD16 u2_sig_coeff_map = ps_tu_4x4->u2_sig_coeff_map; WORD32 idx = 0; WORD16 *pi2_coeff_data = &ps_tu_4x4->ai2_level[0]; WORD32 dc_only_flag = 0; WORD32 num_coeff = 0; PROFILE_DISABLE_UNPACK_LUMA() while(u2_sig_coeff_map) { idx = CLZ(u2_sig_coeff_map); idx = 31 - idx; RESET_BIT(u2_sig_coeff_map,idx); idx = pu1_inv_scan[idx]; pi2_out_coeff_data[idx] = *pi2_coeff_data++; num_coeff++; } if((num_coeff == 1) && (idx == 0)) { dc_only_flag = 1; } { WORD32 offset; offset = (UWORD8 *)pi2_coeff_data - (UWORD8 *)ps_tu_4x4; offset = ALIGN4(offset); ps_dec->pv_proc_tu_coeff_data = (void *)((UWORD8 *)ps_dec->pv_proc_tu_coeff_data + offset); } return dc_only_flag; } UWORD32 ih264d_unpack_coeff4x4_8x8blk(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD16 ui2_luma_csbp, WORD16 *pi2_out_coeff_data) { UWORD8 *pu1_inv_scan; UWORD8 u1_mb_field_decoding_flag = ps_cur_mb_info->u1_mb_field_decodingflag; UWORD8 u1_field_coding_flag = ps_cur_mb_info->ps_curmb->u1_mb_fld; UWORD32 u4_luma_dc_only_csbp = 0; WORD32 dc_only_flag = 0; PROFILE_DISABLE_UNPACK_LUMA() if(u1_field_coding_flag || u1_mb_field_decoding_flag) { pu1_inv_scan = (UWORD8 *)gau1_ih264d_inv_scan_fld; } else { pu1_inv_scan = (UWORD8 *)gau1_ih264d_inv_scan; } // sub 0 if(ui2_luma_csbp & 0x1) { memset(pi2_out_coeff_data,0,16*sizeof(WORD16)); dc_only_flag = ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); INSERT_BIT(u4_luma_dc_only_csbp, 0, dc_only_flag); } pi2_out_coeff_data += 16; // sub 1 if(ui2_luma_csbp & 0x2) { memset(pi2_out_coeff_data,0,16*sizeof(WORD16)); dc_only_flag = ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); INSERT_BIT(u4_luma_dc_only_csbp, 1, dc_only_flag); } pi2_out_coeff_data += 16 + 32; // sub 2 if(ui2_luma_csbp & 0x10) { memset(pi2_out_coeff_data,0,16*sizeof(WORD16)); dc_only_flag = ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); INSERT_BIT(u4_luma_dc_only_csbp, 4, dc_only_flag); } pi2_out_coeff_data += 16; // sub 3 if(ui2_luma_csbp & 0x20) { memset(pi2_out_coeff_data,0,16*sizeof(WORD16)); dc_only_flag = ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); INSERT_BIT(u4_luma_dc_only_csbp, 5, dc_only_flag); } return u4_luma_dc_only_csbp; } WORD32 ih264d_unpack_coeff8x8_8x8blk_cavlc(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD16 ui2_luma_csbp, WORD16 *pi2_out_coeff_data) { UWORD8 *pu1_inv_scan; UWORD8 u1_mb_field_decoding_flag = ps_cur_mb_info->u1_mb_field_decodingflag; UWORD8 u1_field_coding_flag = ps_cur_mb_info->ps_curmb->u1_mb_fld; WORD32 dc_only_flag = 0; PROFILE_DISABLE_UNPACK_LUMA() if(ui2_luma_csbp & 0x33) { memset(pi2_out_coeff_data,0,64*sizeof(WORD16)); } if(!u1_mb_field_decoding_flag) { pu1_inv_scan = (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[0]; } else { pu1_inv_scan = (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[0]; } // sub 0 if(ui2_luma_csbp & 0x1) { dc_only_flag = ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); } if(!u1_mb_field_decoding_flag) { pu1_inv_scan = (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[1]; } else { pu1_inv_scan = (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[1]; } // sub 1 if(ui2_luma_csbp & 0x2) { dc_only_flag = 0; ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); } if(!u1_mb_field_decoding_flag) { pu1_inv_scan = (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[2]; } else { pu1_inv_scan = (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[2]; } // sub 2 if(ui2_luma_csbp & 0x10) { dc_only_flag = 0; ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); } if(!u1_mb_field_decoding_flag) { pu1_inv_scan = (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[3]; } else { pu1_inv_scan = (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[3]; } // sub 3 if(ui2_luma_csbp & 0x20) { dc_only_flag = 0; ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); } return dc_only_flag; } void ih264d_unpack_coeff4x4_8x8blk_chroma(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD16 ui2_chroma_csbp, WORD16 *pi2_out_coeff_data) { UWORD8 *pu1_inv_scan; UWORD8 u1_mb_field_decoding_flag = ps_cur_mb_info->u1_mb_field_decodingflag; UWORD8 u1_field_coding_flag = ps_cur_mb_info->ps_curmb->u1_mb_fld; PROFILE_DISABLE_UNPACK_CHROMA() if(u1_field_coding_flag || u1_mb_field_decoding_flag) { pu1_inv_scan = (UWORD8 *)gau1_ih264d_inv_scan_fld; } else { pu1_inv_scan = (UWORD8 *)gau1_ih264d_inv_scan; } if(ui2_chroma_csbp & 0x1) { memset(pi2_out_coeff_data,0,16*sizeof(WORD16)); ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); } pi2_out_coeff_data += 16; if(ui2_chroma_csbp & 0x2) { memset(pi2_out_coeff_data,0,16*sizeof(WORD16)); ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); } pi2_out_coeff_data += 16; if(ui2_chroma_csbp & 0x4) { memset(pi2_out_coeff_data,0,16*sizeof(WORD16)); ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); } pi2_out_coeff_data += 16; if(ui2_chroma_csbp & 0x8) { memset(pi2_out_coeff_data,0,16*sizeof(WORD16)); ih264d_unpack_coeff4x4_4x4blk(ps_dec, pi2_out_coeff_data, pu1_inv_scan); } } UWORD32 ih264d_unpack_luma_coeff4x4_mb(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD8 intra_flag) { UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; UWORD16 ui2_luma_csbp = ps_cur_mb_info->u2_luma_csbp; UWORD8 *pu1_inv_scan = ps_dec->pu1_inv_scan; WORD16 *pi2_coeff_data = ps_dec->pi2_coeff_data; PROFILE_DISABLE_UNPACK_LUMA() if(!ps_cur_mb_info->u1_tran_form8x8) { UWORD32 u4_luma_dc_only_csbp = 0; UWORD32 u4_temp = 0; WORD16* pi2_dc_val = NULL; /* * Reserve the pointer to dc vals. The dc vals will be copied * after unpacking of ac vals since memset to 0 inside. */ if(intra_flag && (u1_mb_type != I_4x4_MB)) { if(CHECKBIT(ps_cur_mb_info->u1_yuv_dc_block_flag,0)) { pi2_dc_val = (WORD16 *)ps_dec->pv_proc_tu_coeff_data; ps_dec->pv_proc_tu_coeff_data = (void *)(pi2_dc_val + 16); } } if(ui2_luma_csbp) { pi2_coeff_data = ps_dec->pi2_coeff_data; u4_temp = ih264d_unpack_coeff4x4_8x8blk(ps_dec, ps_cur_mb_info, ui2_luma_csbp, pi2_coeff_data); u4_luma_dc_only_csbp = u4_temp; pi2_coeff_data += 32; ui2_luma_csbp = ui2_luma_csbp >> 2; u4_temp = ih264d_unpack_coeff4x4_8x8blk(ps_dec, ps_cur_mb_info, ui2_luma_csbp, pi2_coeff_data); u4_luma_dc_only_csbp |= (u4_temp << 2); pi2_coeff_data += 32 + 64; ui2_luma_csbp = ui2_luma_csbp >> 6; u4_temp = ih264d_unpack_coeff4x4_8x8blk(ps_dec, ps_cur_mb_info, ui2_luma_csbp, pi2_coeff_data); u4_luma_dc_only_csbp |= (u4_temp << 8); pi2_coeff_data += 32; ui2_luma_csbp = ui2_luma_csbp >> 2; u4_temp = ih264d_unpack_coeff4x4_8x8blk(ps_dec, ps_cur_mb_info, ui2_luma_csbp, pi2_coeff_data); u4_luma_dc_only_csbp |= (u4_temp << 10); } if(pi2_dc_val != NULL) { WORD32 i; pi2_coeff_data = ps_dec->pi2_coeff_data; for(i = 0; i < 4; i++) { pi2_coeff_data[0] = pi2_dc_val[0]; pi2_coeff_data[4 * 16] = pi2_dc_val[4]; pi2_coeff_data[8 * 16] = pi2_dc_val[8]; pi2_coeff_data[12 * 16] = pi2_dc_val[12]; pi2_dc_val++; /* Point to next column */ pi2_coeff_data += 16; } u4_luma_dc_only_csbp = ps_cur_mb_info->u2_luma_csbp ^ 0xFFFF; } return u4_luma_dc_only_csbp; } else { UWORD32 u4_luma_dc_only_cbp = 0; WORD32 dc_only_flag; if(ui2_luma_csbp) { pi2_coeff_data = ps_dec->pi2_coeff_data; dc_only_flag = ih264d_unpack_coeff8x8_8x8blk_cavlc(ps_dec, ps_cur_mb_info, ui2_luma_csbp, pi2_coeff_data); INSERT_BIT(u4_luma_dc_only_cbp, 0, dc_only_flag); pi2_coeff_data += 64; ui2_luma_csbp = ui2_luma_csbp >> 2; dc_only_flag = ih264d_unpack_coeff8x8_8x8blk_cavlc(ps_dec, ps_cur_mb_info, ui2_luma_csbp, pi2_coeff_data); INSERT_BIT(u4_luma_dc_only_cbp, 1, dc_only_flag); pi2_coeff_data += 64; ui2_luma_csbp = ui2_luma_csbp >> 6; dc_only_flag = ih264d_unpack_coeff8x8_8x8blk_cavlc(ps_dec, ps_cur_mb_info, ui2_luma_csbp, pi2_coeff_data); INSERT_BIT(u4_luma_dc_only_cbp, 2, dc_only_flag); pi2_coeff_data += 64; ui2_luma_csbp = ui2_luma_csbp >> 2; dc_only_flag = ih264d_unpack_coeff8x8_8x8blk_cavlc(ps_dec, ps_cur_mb_info, ui2_luma_csbp, pi2_coeff_data); INSERT_BIT(u4_luma_dc_only_cbp, 3, dc_only_flag); } return u4_luma_dc_only_cbp; } } void ih264d_unpack_chroma_coeff4x4_mb(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info) { UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; UWORD16 ui2_chroma_csbp = ps_cur_mb_info->u2_chroma_csbp; UWORD8 *pu1_inv_scan = ps_dec->pu1_inv_scan; WORD16 *pi2_coeff_data = ps_dec->pi2_coeff_data; WORD32 i; WORD16 *pi2_dc_val_u = NULL; WORD16 *pi2_dc_val_v = NULL; PROFILE_DISABLE_UNPACK_CHROMA() if((ps_cur_mb_info->u1_cbp >> 4) == CBPC_ALLZERO) return; /* * Reserve the pointers to dc vals. The dc vals will be copied * after unpacking of ac vals since memset to 0 inside. */ if(CHECKBIT(ps_cur_mb_info->u1_yuv_dc_block_flag,1)) { pi2_dc_val_u = (WORD16 *)ps_dec->pv_proc_tu_coeff_data; ps_dec->pv_proc_tu_coeff_data = (void *)(pi2_dc_val_u + 4); } if(CHECKBIT(ps_cur_mb_info->u1_yuv_dc_block_flag,2)) { pi2_dc_val_v = (WORD16 *)ps_dec->pv_proc_tu_coeff_data; ps_dec->pv_proc_tu_coeff_data = (void *)(pi2_dc_val_v + 4); } if((ps_cur_mb_info->u1_cbp >> 4) == CBPC_NONZERO) { pi2_coeff_data = ps_dec->pi2_coeff_data; ih264d_unpack_coeff4x4_8x8blk_chroma(ps_dec, ps_cur_mb_info, ui2_chroma_csbp, pi2_coeff_data); pi2_coeff_data += 64; ui2_chroma_csbp = ui2_chroma_csbp >> 4; ih264d_unpack_coeff4x4_8x8blk_chroma(ps_dec, ps_cur_mb_info, ui2_chroma_csbp, pi2_coeff_data); } pi2_coeff_data = ps_dec->pi2_coeff_data; if(pi2_dc_val_u != NULL) { pi2_coeff_data[0] = *pi2_dc_val_u++; pi2_coeff_data[1 * 16] = *pi2_dc_val_u++; pi2_coeff_data[2 * 16] = *pi2_dc_val_u++; pi2_coeff_data[3 * 16] = *pi2_dc_val_u++; } else { pi2_coeff_data[0] = 0; pi2_coeff_data[1 * 16] = 0; pi2_coeff_data[2 * 16] = 0; pi2_coeff_data[3 * 16] = 0; } pi2_coeff_data += 64; if(pi2_dc_val_v != NULL) { pi2_coeff_data[0] = *pi2_dc_val_v++; pi2_coeff_data[1 * 16] = *pi2_dc_val_v++; pi2_coeff_data[2 * 16] = *pi2_dc_val_v++; pi2_coeff_data[3 * 16] = *pi2_dc_val_v++; } else { pi2_coeff_data[0] = 0; pi2_coeff_data[1 * 16] = 0; pi2_coeff_data[2 * 16] = 0; pi2_coeff_data[3 * 16] = 0; } } UWORD32 ih264d_unpack_luma_coeff8x8_mb(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info) { WORD32 blk_8x8_cnt; WORD16 *pi2_out_coeff_data = ps_dec->pi2_coeff_data; UWORD8 u1_field_coding_flag = ps_cur_mb_info->ps_curmb->u1_mb_fld; UWORD8 *pu1_inv_scan; UWORD32 u4_luma_dc_only_cbp = 0; PROFILE_DISABLE_UNPACK_LUMA() if(!u1_field_coding_flag) { /*******************************************************************/ /* initializing inverse scan matrices */ /*******************************************************************/ pu1_inv_scan = (UWORD8 *)gau1_ih264d_inv_scan_prog8x8_cabac; } else { /*******************************************************************/ /* initializing inverse scan matrices */ /*******************************************************************/ pu1_inv_scan = (UWORD8 *)gau1_ih264d_inv_scan_int8x8_cabac; } for(blk_8x8_cnt = 0; blk_8x8_cnt < 4; blk_8x8_cnt++) { if(CHECKBIT(ps_cur_mb_info->u1_cbp, blk_8x8_cnt)) { tu_blk8x8_coeff_data_t *ps_tu_8x8 = (tu_blk8x8_coeff_data_t *)ps_dec->pv_proc_tu_coeff_data; UWORD32 u4_sig_coeff_map; WORD32 idx = 0; WORD16 *pi2_coeff_data = &ps_tu_8x8->ai2_level[0]; WORD32 num_coeff = 0; /* memset 64 coefficient to zero */ memset(pi2_out_coeff_data,0,64*sizeof(WORD16)); u4_sig_coeff_map = ps_tu_8x8->au4_sig_coeff_map[1]; while(u4_sig_coeff_map) { idx = CLZ(u4_sig_coeff_map); idx = 31 - idx; RESET_BIT(u4_sig_coeff_map,idx); idx = pu1_inv_scan[idx + 32]; pi2_out_coeff_data[idx] = *pi2_coeff_data++; num_coeff++; } u4_sig_coeff_map = ps_tu_8x8->au4_sig_coeff_map[0]; while(u4_sig_coeff_map) { idx = CLZ(u4_sig_coeff_map); idx = 31 - idx; RESET_BIT(u4_sig_coeff_map,idx); idx = pu1_inv_scan[idx]; pi2_out_coeff_data[idx] = *pi2_coeff_data++; num_coeff++; } if((num_coeff == 1) && (idx == 0)) { SET_BIT(u4_luma_dc_only_cbp,blk_8x8_cnt); } { WORD32 offset; offset = (UWORD8 *)pi2_coeff_data - (UWORD8 *)ps_tu_8x8; offset = ALIGN4(offset); ps_dec->pv_proc_tu_coeff_data = (void *)((UWORD8 *)ps_dec->pv_proc_tu_coeff_data + offset); } } pi2_out_coeff_data += 64; } return u4_luma_dc_only_cbp; } /*! ************************************************************************** * \if Function name : ih264d_process_intra_mb \endif * * \brief * This function decodes an I MB. Intraprediction is carried out followed * by InvTramsform. Both IntraPrediction and Reconstrucion are carried out * row buffer itself. * * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 ih264d_process_intra_mb(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD8 u1_mb_num) { UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; UWORD8 uc_temp = ps_cur_mb_info->u1_mb_ngbr_availablity; UWORD8 u1_top_available = BOOLEAN(uc_temp & TOP_MB_AVAILABLE_MASK); UWORD8 u1_left_available = BOOLEAN(uc_temp & LEFT_MB_AVAILABLE_MASK); UWORD8 u1_use_top_right_mb = BOOLEAN(uc_temp & TOP_RIGHT_MB_AVAILABLE_MASK); UWORD8 u1_use_top_left_mb = BOOLEAN(uc_temp & TOP_LEFT_MB_AVAILABLE_MASK); UWORD8 uc_useTopMB = u1_top_available; UWORD16 u2_use_left_mb = u1_left_available; UWORD16 u2_use_left_mb_pack; UWORD8 *pu1_luma_pred_buffer; /* CHANGED CODE */ UWORD8 *pu1_luma_rec_buffer; UWORD8 *puc_top; mb_neigbour_params_t *ps_left_mb; mb_neigbour_params_t *ps_top_mb; mb_neigbour_params_t *ps_top_right_mb; mb_neigbour_params_t *ps_curmb; UWORD16 u2_mbx = ps_cur_mb_info->u2_mbx; UWORD32 ui_pred_width, ui_rec_width; WORD16 *pi2_y_coeff; UWORD8 u1_mbaff, u1_topmb, u1_mb_field_decoding_flag; UWORD32 u4_num_pmbair; UWORD16 ui2_luma_csbp = ps_cur_mb_info->u2_luma_csbp; UWORD8 *pu1_yleft, *pu1_ytop_left; /* Chroma variables*/ UWORD8 *pu1_top_u; UWORD8 *pu1_uleft; UWORD8 *pu1_u_top_left; /* CHANGED CODE */ UWORD8 *pu1_mb_cb_rei1_buffer, *pu1_mb_cr_rei1_buffer; UWORD32 u4_recwidth_cr; /* CHANGED CODE */ tfr_ctxt_t *ps_frame_buf = ps_dec->ps_frame_buf_ip_recon; UWORD32 u4_luma_dc_only_csbp = 0; UWORD32 u4_luma_dc_only_cbp = 0; UWORD8 *pu1_prev_intra4x4_pred_mode_data = (UWORD8 *)ps_dec->pv_proc_tu_coeff_data; //Pointer to keep track of intra4x4_pred_mode data in pv_proc_tu_coeff_data buffer u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; u1_topmb = ps_cur_mb_info->u1_topmb; u4_num_pmbair = (u1_mb_num >> u1_mbaff); /*--------------------------------------------------------------------*/ /* Find the current MB's mb params */ /*--------------------------------------------------------------------*/ u1_mb_field_decoding_flag = ps_cur_mb_info->u1_mb_field_decodingflag; ps_curmb = ps_cur_mb_info->ps_curmb; ps_top_mb = ps_cur_mb_info->ps_top_mb; ps_left_mb = ps_cur_mb_info->ps_left_mb; ps_top_right_mb = ps_cur_mb_info->ps_top_right_mb; /*--------------------------------------------------------------------*/ /* Check whether neighbouring MB is Inter MB and */ /* constrained intra pred is 1. */ /*--------------------------------------------------------------------*/ u2_use_left_mb_pack = (u2_use_left_mb << 8) + u2_use_left_mb; if(ps_dec->ps_cur_pps->u1_constrained_intra_pred_flag) { UWORD8 u1_left = (UWORD8)u2_use_left_mb; uc_useTopMB = uc_useTopMB && ((ps_top_mb->u1_mb_type != P_MB) && (ps_top_mb->u1_mb_type != B_MB)); u2_use_left_mb = u2_use_left_mb && ((ps_left_mb->u1_mb_type != P_MB) && (ps_left_mb->u1_mb_type != B_MB)); u2_use_left_mb_pack = (u2_use_left_mb << 8) + u2_use_left_mb; if(u1_mbaff) { if(u1_mb_field_decoding_flag ^ ps_left_mb->u1_mb_fld) { u1_left = u1_left && (((ps_left_mb + 1)->u1_mb_type != P_MB) && ((ps_left_mb + 1)->u1_mb_type != B_MB)); u2_use_left_mb = u2_use_left_mb && u1_left; if(u1_mb_field_decoding_flag) u2_use_left_mb_pack = (u1_left << 8) + (u2_use_left_mb_pack & 0xff); else u2_use_left_mb_pack = (u2_use_left_mb << 8) + (u2_use_left_mb); } } u1_use_top_right_mb = u1_use_top_right_mb && ((ps_top_right_mb->u1_mb_type != P_MB) && (ps_top_right_mb->u1_mb_type != B_MB)); u1_use_top_left_mb = u1_use_top_left_mb && ((ps_cur_mb_info->u1_topleft_mbtype != P_MB) && (ps_cur_mb_info->u1_topleft_mbtype != B_MB)); } /*********************Common pointer calculations *************************/ /* CHANGED CODE */ pu1_luma_pred_buffer = ps_dec->pu1_y; pu1_luma_rec_buffer = ps_frame_buf->pu1_dest_y + (u4_num_pmbair << 4); pu1_mb_cb_rei1_buffer = ps_frame_buf->pu1_dest_u + (u4_num_pmbair << 3) * YUV420SP_FACTOR; pu1_mb_cr_rei1_buffer = ps_frame_buf->pu1_dest_v + (u4_num_pmbair << 3); ui_pred_width = MB_SIZE; ui_rec_width = ps_dec->u2_frm_wd_y << u1_mb_field_decoding_flag; u4_recwidth_cr = ps_dec->u2_frm_wd_uv << u1_mb_field_decoding_flag; /************* Current and top luma pointer *****************/ if(u1_mbaff) { if(u1_topmb == 0) { pu1_luma_rec_buffer += ( u1_mb_field_decoding_flag ? (ui_rec_width >> 1) : (ui_rec_width << 4)); pu1_mb_cb_rei1_buffer += ( u1_mb_field_decoding_flag ? (u4_recwidth_cr >> 1) : (u4_recwidth_cr << 3)); pu1_mb_cr_rei1_buffer += ( u1_mb_field_decoding_flag ? (u4_recwidth_cr >> 1) : (u4_recwidth_cr << 3)); } } /* CHANGED CODE */ if(ps_dec->u4_use_intrapred_line_copy == 1) { puc_top = ps_dec->pu1_prev_y_intra_pred_line + (ps_cur_mb_info->u2_mbx << 4); pu1_top_u = ps_dec->pu1_prev_u_intra_pred_line + (ps_cur_mb_info->u2_mbx << 3) * YUV420SP_FACTOR; } else { puc_top = pu1_luma_rec_buffer - ui_rec_width; pu1_top_u = pu1_mb_cb_rei1_buffer - u4_recwidth_cr; } /* CHANGED CODE */ /************* Left pointer *****************/ pu1_yleft = pu1_luma_rec_buffer - 1; pu1_uleft = pu1_mb_cb_rei1_buffer - 1 * YUV420SP_FACTOR; /**************Top Left pointer calculation**********/ pu1_ytop_left = puc_top - 1; pu1_u_top_left = pu1_top_u - 1 * YUV420SP_FACTOR; /* CHANGED CODE */ PROFILE_DISABLE_INTRA_PRED() { pu1_prev_intra4x4_pred_mode_data = (UWORD8 *)ps_dec->pv_proc_tu_coeff_data; if(u1_mb_type == I_4x4_MB && ps_cur_mb_info->u1_tran_form8x8 == 0) { ps_dec->pv_proc_tu_coeff_data = (void *)((UWORD8 *)ps_dec->pv_proc_tu_coeff_data + 32); } else if (u1_mb_type == I_4x4_MB && ps_cur_mb_info->u1_tran_form8x8 == 1) { ps_dec->pv_proc_tu_coeff_data = (void *)((UWORD8 *)ps_dec->pv_proc_tu_coeff_data + 8); } } if(!ps_cur_mb_info->u1_tran_form8x8) { u4_luma_dc_only_csbp = ih264d_unpack_luma_coeff4x4_mb(ps_dec, ps_cur_mb_info, 1); } else { if(!ps_dec->ps_cur_pps->u1_entropy_coding_mode) { u4_luma_dc_only_cbp = ih264d_unpack_luma_coeff4x4_mb(ps_dec, ps_cur_mb_info, 1); } else { u4_luma_dc_only_cbp = ih264d_unpack_luma_coeff8x8_mb(ps_dec, ps_cur_mb_info); } } pi2_y_coeff = ps_dec->pi2_coeff_data; if(u1_mb_type != I_4x4_MB) { UWORD8 u1_intrapred_mode = MB_TYPE_TO_INTRA_16x16_MODE(u1_mb_type); /*--------------------------------------------------------------------*/ /* 16x16 IntraPrediction */ /*--------------------------------------------------------------------*/ { UWORD8 u1_packed_modes = (u1_top_available << 1) + u1_left_available; UWORD8 u1_err_code = (u1_intrapred_mode & 1) ? u1_intrapred_mode : (u1_intrapred_mode ^ 2); if((u1_err_code & u1_packed_modes) ^ u1_err_code) { u1_intrapred_mode = 0; ps_dec->i4_error_code = ERROR_INTRAPRED; } } { /* Align the size to multiple of 8, so that SIMD functions can read 64 bits at a time. Only 33 bytes are actaully used */ UWORD8 au1_ngbr_pels[40]; /* Get neighbour pixels */ /* left pels */ if(u2_use_left_mb) { WORD32 i; for(i = 0; i < 16; i++) au1_ngbr_pels[16 - 1 - i] = pu1_yleft[i * ui_rec_width]; } else { memset(au1_ngbr_pels, 0, 16); } /* top left pels */ au1_ngbr_pels[16] = *pu1_ytop_left; /* top pels */ if(uc_useTopMB) { memcpy(au1_ngbr_pels + 16 + 1, puc_top, 16); } else { memset(au1_ngbr_pels + 16 + 1, 0, 16); } PROFILE_DISABLE_INTRA_PRED() ps_dec->apf_intra_pred_luma_16x16[u1_intrapred_mode]( au1_ngbr_pels, pu1_luma_rec_buffer, 1, ui_rec_width, ((uc_useTopMB << 2) | u2_use_left_mb)); } { UWORD32 i; WORD16 ai2_tmp[16]; for(i = 0; i < 16; i++) { WORD16 *pi2_level = pi2_y_coeff + (i << 4); UWORD8 *pu1_pred_sblk = pu1_luma_rec_buffer + ((i & 0x3) * BLK_SIZE) + (i >> 2) * (ui_rec_width << 2); PROFILE_DISABLE_IQ_IT_RECON() { if(CHECKBIT(ps_cur_mb_info->u2_luma_csbp, i)) { ps_dec->pf_iquant_itrans_recon_luma_4x4( pi2_level, pu1_pred_sblk, pu1_pred_sblk, ui_rec_width, ui_rec_width, gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qp_rem6], (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[0], ps_cur_mb_info->u1_qp_div6, ai2_tmp, 1, pi2_level); } else if((CHECKBIT(u4_luma_dc_only_csbp, i)) && pi2_level[0] != 0) { ps_dec->pf_iquant_itrans_recon_luma_4x4_dc( pi2_level, pu1_pred_sblk, pu1_pred_sblk, ui_rec_width, ui_rec_width, gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qp_rem6], (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[0], ps_cur_mb_info->u1_qp_div6, ai2_tmp, 1, pi2_level); } } } } } else if(!ps_cur_mb_info->u1_tran_form8x8) { UWORD8 u1_is_left_sub_block, u1_is_top_sub_block = uc_useTopMB; UWORD8 u1_sub_blk_x, u1_sub_blk_y, u1_sub_mb_num; WORD8 i1_top_pred_mode; WORD8 i1_left_pred_mode; UWORD8 *pu1_top, *pu1_left, *pu1_top_left, *pu1_top_right; WORD8 *pi1_cur_pred_mode, *pi1_left_pred_mode, *pc_topPredMode; UWORD16 ui2_left_pred_buf_width = 0xffff; WORD8 i1_intra_pred; UWORD8 *pu1_prev_intra4x4_pred_mode_flag = pu1_prev_intra4x4_pred_mode_data; UWORD8 *pu1_rem_intra4x4_pred_mode = pu1_prev_intra4x4_pred_mode_data + 16; WORD16 *pi2_y_coeff1; UWORD8 u1_cur_sub_block; UWORD16 ui2_top_rt_mask; /*--------------------------------------------------------------------*/ /* 4x4 IntraPrediction */ /*--------------------------------------------------------------------*/ /* Calculation of Top Right subblock mask */ /* */ /* (a) Set it to default mask */ /* [It has 0 for sublocks which will never have top-right sub block] */ /* */ /* (b) If top MB is not available */ /* Clear the bits of the first row sub blocks */ /* */ /* (c) Set/Clear bit for top-right sublock of MB */ /* [5 sub-block in decoding order] based on TOP RIGHT MB availablity */ /*--------------------------------------------------------------------*/ pu1_top = puc_top; ui2_top_rt_mask = (u1_use_top_right_mb << 3) | (0x5750); if(uc_useTopMB) ui2_top_rt_mask |= 0x7; /*Top Related initialisations*/ pi1_cur_pred_mode = ps_cur_mb_info->ps_curmb->pi1_intrapredmodes; pc_topPredMode = ps_cur_mb_info->ps_top_mb->pi1_intrapredmodes; /*-------------------------------------- if(u1_mbaff) { pi1_cur_pred_mode += (u2_mbx << 2); pc_topPredMode = pi1_cur_pred_mode + ps_cur_mb_info->i1_offset; pi1_cur_pred_mode += (u1_topmb) ? 0: 4; }*/ if(u1_top_available) { if(ps_top_mb->u1_mb_type == I_4x4_MB) *(WORD32*)pi1_cur_pred_mode = *(WORD32*)pc_topPredMode; else *(WORD32*)pi1_cur_pred_mode = (uc_useTopMB) ? DC_DC_DC_DC : NOT_VALID; } else *(WORD32*)pi1_cur_pred_mode = NOT_VALID; /* CHANGED CODE */ /* CHANGED CODE */ /*Left Related initialisations*/ pi1_left_pred_mode = ps_dec->pi1_left_pred_mode; if(!u1_mbaff) { if(u1_left_available) { if(ps_left_mb->u1_mb_type != I_4x4_MB) *(WORD32*)pi1_left_pred_mode = (u2_use_left_mb_pack) ? DC_DC_DC_DC : NOT_VALID; } else { *(WORD32*)pi1_left_pred_mode = NOT_VALID; } } else { UWORD8 u1_curMbfld = ps_cur_mb_info->u1_mb_field_decodingflag; UWORD8 u1_leftMbfld = ps_left_mb->u1_mb_fld; if(u1_curMbfld ^ u1_leftMbfld) { if(u1_topmb | ((u1_topmb == 0) && ((ps_curmb - 1)->u1_mb_type != I_4x4_MB))) { if(u1_left_available) { if(ps_left_mb->u1_mb_type != I_4x4_MB) { if(CHECKBIT(u2_use_left_mb_pack,0) == 0) *(WORD32*)pi1_left_pred_mode = NOT_VALID; else *(WORD32*)pi1_left_pred_mode = DC_DC_DC_DC; } } else *(WORD32*)pi1_left_pred_mode = NOT_VALID; if(u1_curMbfld) { if(u1_left_available) { if((ps_left_mb + 1)->u1_mb_type != I_4x4_MB) { if(u2_use_left_mb_pack >> 8) *(WORD32*)(pi1_left_pred_mode + 4) = DC_DC_DC_DC; else *(WORD32*)(pi1_left_pred_mode + 4) = NOT_VALID; } } else *(WORD32*)(pi1_left_pred_mode + 4) = NOT_VALID; pi1_left_pred_mode[1] = pi1_left_pred_mode[2]; pi1_left_pred_mode[2] = pi1_left_pred_mode[4]; pi1_left_pred_mode[3] = pi1_left_pred_mode[6]; *(WORD32*)(pi1_left_pred_mode + 4) = *(WORD32*)pi1_left_pred_mode; } else { pi1_left_pred_mode[7] = pi1_left_pred_mode[3]; pi1_left_pred_mode[6] = pi1_left_pred_mode[3]; pi1_left_pred_mode[5] = pi1_left_pred_mode[2]; pi1_left_pred_mode[4] = pi1_left_pred_mode[2]; pi1_left_pred_mode[3] = pi1_left_pred_mode[1]; pi1_left_pred_mode[2] = pi1_left_pred_mode[1]; pi1_left_pred_mode[1] = pi1_left_pred_mode[0]; } } pi1_left_pred_mode += (u1_topmb) ? 0 : 4; } else { pi1_left_pred_mode += (u1_topmb) ? 0 : 4; if(u1_left_available) { if(ps_left_mb->u1_mb_type != I_4x4_MB) *(WORD32*)pi1_left_pred_mode = (u2_use_left_mb_pack) ? DC_DC_DC_DC : NOT_VALID; } else *(WORD32*)pi1_left_pred_mode = NOT_VALID; } } /* One time pointer initialisations*/ pi2_y_coeff1 = pi2_y_coeff; pu1_top_left = pu1_ytop_left; /* Scan the sub-blocks in Raster Scan Order */ for(u1_sub_mb_num = 0; u1_sub_mb_num < 16; u1_sub_mb_num++) { /* Align the size to multiple of 8, so that SIMD functions can read 64 bits at a time. Only 13 bytes are actaully used */ UWORD8 au1_ngbr_pels[16]; u1_sub_blk_x = u1_sub_mb_num & 0x3; u1_sub_blk_y = u1_sub_mb_num >> 2; i1_top_pred_mode = pi1_cur_pred_mode[u1_sub_blk_x]; i1_left_pred_mode = pi1_left_pred_mode[u1_sub_blk_y]; u1_use_top_right_mb = (!!CHECKBIT(ui2_top_rt_mask, u1_sub_mb_num)); /*********** left subblock availability**********/ if(u1_sub_blk_x) u1_is_left_sub_block = 1; else u1_is_left_sub_block = (u1_sub_blk_y < 2) ? (CHECKBIT(u2_use_left_mb_pack, 0)) : (u2_use_left_mb_pack >> 8); /* CHANGED CODE */ if(u1_sub_blk_y) u1_is_top_sub_block = 1; /* CHANGED CODE */ /***************** Top *********************/ if(ps_dec->u4_use_intrapred_line_copy == 1) { if(u1_sub_blk_y) pu1_top = pu1_luma_rec_buffer - ui_rec_width; else pu1_top = puc_top + (u1_sub_blk_x << 2); } else { pu1_top = pu1_luma_rec_buffer - ui_rec_width; } /***************** Top Right *********************/ pu1_top_right = pu1_top + 4; /***************** Top Left *********************/ pu1_top_left = pu1_top - 1; /***************** Left *********************/ pu1_left = pu1_luma_rec_buffer - 1; /* CHANGED CODE */ /*---------------------------------------------------------------*/ /* Calculation of Intra prediction mode */ /*---------------------------------------------------------------*/ i1_intra_pred = ((i1_left_pred_mode < 0) | (i1_top_pred_mode < 0)) ? DC : MIN(i1_left_pred_mode, i1_top_pred_mode); { UWORD8 u1_packed_modes = (u1_is_top_sub_block << 1) + u1_is_left_sub_block; UWORD8 *pu1_intra_err_codes = (UWORD8 *)gau1_ih264d_intra_pred_err_code; UWORD8 uc_b2b0 = ((u1_sub_mb_num & 4) >> 1) | (u1_sub_mb_num & 1); UWORD8 uc_b3b1 = ((u1_sub_mb_num & 8) >> 2) | ((u1_sub_mb_num & 2) >> 1); u1_cur_sub_block = (uc_b3b1 << 2) + uc_b2b0; PROFILE_DISABLE_INTRA_PRED() if(!pu1_prev_intra4x4_pred_mode_flag[u1_cur_sub_block]) { i1_intra_pred = pu1_rem_intra4x4_pred_mode[u1_cur_sub_block] + (pu1_rem_intra4x4_pred_mode[u1_cur_sub_block] >= i1_intra_pred); } i1_intra_pred = CLIP3(0, 8, i1_intra_pred); { UWORD8 u1_err_code = pu1_intra_err_codes[i1_intra_pred]; if((u1_err_code & u1_packed_modes) ^ u1_err_code) { i1_intra_pred = 0; ps_dec->i4_error_code = ERROR_INTRAPRED; } } } { /* Get neighbour pixels */ /* left pels */ if(u1_is_left_sub_block) { WORD32 i; for(i = 0; i < 4; i++) au1_ngbr_pels[4 - 1 - i] = pu1_left[i * ui_rec_width]; } else { memset(au1_ngbr_pels, 0, 4); } /* top left pels */ au1_ngbr_pels[4] = *pu1_top_left; /* top pels */ if(u1_is_top_sub_block) { memcpy(au1_ngbr_pels + 4 + 1, pu1_top, 4); } else { memset(au1_ngbr_pels + 4 + 1, 0, 4); } /* top right pels */ if(u1_use_top_right_mb) { memcpy(au1_ngbr_pels + 4 * 2 + 1, pu1_top_right, 4); } else if(u1_is_top_sub_block) { memset(au1_ngbr_pels + 4 * 2 + 1, au1_ngbr_pels[4 * 2], 4); } } PROFILE_DISABLE_INTRA_PRED() ps_dec->apf_intra_pred_luma_4x4[i1_intra_pred]( au1_ngbr_pels, pu1_luma_rec_buffer, 1, ui_rec_width, ((u1_is_top_sub_block << 2) | u1_is_left_sub_block)); /* CHANGED CODE */ if(CHECKBIT(ui2_luma_csbp, u1_sub_mb_num)) { WORD16 ai2_tmp[16]; PROFILE_DISABLE_IQ_IT_RECON() { if(CHECKBIT(u4_luma_dc_only_csbp, u1_sub_mb_num)) { ps_dec->pf_iquant_itrans_recon_luma_4x4_dc( pi2_y_coeff1, pu1_luma_rec_buffer, pu1_luma_rec_buffer, ui_rec_width, ui_rec_width, gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qp_rem6], (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[0], ps_cur_mb_info->u1_qp_div6, ai2_tmp, 0, NULL); } else { ps_dec->pf_iquant_itrans_recon_luma_4x4( pi2_y_coeff1, pu1_luma_rec_buffer, pu1_luma_rec_buffer, ui_rec_width, ui_rec_width, gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qp_rem6], (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[0], ps_cur_mb_info->u1_qp_div6, ai2_tmp, 0, NULL); } } } /*---------------------------------------------------------------*/ /* Update sub block number */ /*---------------------------------------------------------------*/ pi2_y_coeff1 += 16; pu1_luma_rec_buffer += (u1_sub_blk_x == 3) ? (ui_rec_width << 2) - 12 : 4; pu1_luma_pred_buffer += (u1_sub_blk_x == 3) ? (ui_pred_width << 2) - 12 : 4; /* CHANGED CODE */ pi1_cur_pred_mode[u1_sub_blk_x] = i1_intra_pred; pi1_left_pred_mode[u1_sub_blk_y] = i1_intra_pred; } } else if((u1_mb_type == I_4x4_MB) && (ps_cur_mb_info->u1_tran_form8x8 == 1)) { UWORD8 u1_is_left_sub_block, u1_is_top_sub_block = uc_useTopMB; UWORD8 u1_sub_blk_x, u1_sub_blk_y, u1_sub_mb_num; WORD8 i1_top_pred_mode; WORD8 i1_left_pred_mode; UWORD8 *pu1_top, *pu1_left, *pu1_top_left; WORD8 *pi1_cur_pred_mode, *pi1_left_pred_mode, *pc_topPredMode; UWORD16 ui2_left_pred_buf_width = 0xffff; WORD8 i1_intra_pred; UWORD8 *pu1_prev_intra4x4_pred_mode_flag = pu1_prev_intra4x4_pred_mode_data; UWORD8 *pu1_rem_intra4x4_pred_mode = pu1_prev_intra4x4_pred_mode_data + 4; WORD16 *pi2_y_coeff1; UWORD16 ui2_top_rt_mask; UWORD32 u4_4x4_left_offset = 0; /*--------------------------------------------------------------------*/ /* 8x8 IntraPrediction */ /*--------------------------------------------------------------------*/ /* Calculation of Top Right subblock mask */ /* */ /* (a) Set it to default mask */ /* [It has 0 for sublocks which will never have top-right sub block] */ /* */ /* (b) If top MB is not available */ /* Clear the bits of the first row sub blocks */ /* */ /* (c) Set/Clear bit for top-right sublock of MB */ /* [5 sub-block in decoding order] based on TOP RIGHT MB availablity */ /* */ /* ui2_top_rt_mask: marks availibility of top right(neighbour) */ /* in the 8x8 Block ordering */ /* */ /* tr0 tr1 */ /* 0 1 tr3 */ /* 2 3 */ /* */ /* Top rights for 0 is in top MB */ /* top right of 1 will be in top right MB */ /* top right of 3 in right MB and hence not available */ /* This corresponds to ui2_top_rt_mask having default value 0x4 */ /*--------------------------------------------------------------------*/ ui2_top_rt_mask = (u1_use_top_right_mb << 1) | (0x4); if(uc_useTopMB) { ui2_top_rt_mask |= 0x1; } /* Top Related initialisations */ pi1_cur_pred_mode = ps_cur_mb_info->ps_curmb->pi1_intrapredmodes; pc_topPredMode = ps_cur_mb_info->ps_top_mb->pi1_intrapredmodes; /* if(u1_mbaff) { pi1_cur_pred_mode += (u2_mbx << 2); pc_topPredMode = pi1_cur_pred_mode + ps_cur_mb_info->i1_offset; pi1_cur_pred_mode += (u1_topmb) ? 0: 4; } */ if(u1_top_available) { if(ps_top_mb->u1_mb_type == I_4x4_MB) { *(WORD32*)pi1_cur_pred_mode = *(WORD32*)pc_topPredMode; } else { *(WORD32*)pi1_cur_pred_mode = (uc_useTopMB) ? DC_DC_DC_DC : NOT_VALID; } } else { *(WORD32*)pi1_cur_pred_mode = NOT_VALID; } pu1_top = puc_top - 8; /*Left Related initialisations*/ pi1_left_pred_mode = ps_dec->pi1_left_pred_mode; if(!u1_mbaff) { if(u1_left_available) { if(ps_left_mb->u1_mb_type != I_4x4_MB) { *(WORD32*)pi1_left_pred_mode = (u2_use_left_mb_pack) ? DC_DC_DC_DC : NOT_VALID; } } else { *(WORD32*)pi1_left_pred_mode = NOT_VALID; } } else { UWORD8 u1_curMbfld = ps_cur_mb_info->u1_mb_field_decodingflag; UWORD8 u1_leftMbfld = ps_left_mb->u1_mb_fld; if((!u1_curMbfld) && (u1_leftMbfld)) { u4_4x4_left_offset = 1; } if(u1_curMbfld ^ u1_leftMbfld) { if(u1_topmb | ((u1_topmb == 0) && ((ps_curmb - 1)->u1_mb_type != I_4x4_MB))) { if(u1_left_available) { if(ps_left_mb->u1_mb_type != I_4x4_MB) { if(CHECKBIT(u2_use_left_mb_pack,0) == 0) { *(WORD32*)pi1_left_pred_mode = NOT_VALID; } else { *(WORD32*)pi1_left_pred_mode = DC_DC_DC_DC; } } } else { *(WORD32*)pi1_left_pred_mode = NOT_VALID; } if(u1_curMbfld) { if(u1_left_available) { if((ps_left_mb + 1)->u1_mb_type != I_4x4_MB) { if(u2_use_left_mb_pack >> 8) { *(WORD32*)(pi1_left_pred_mode + 4) = DC_DC_DC_DC; } else { *(WORD32*)(pi1_left_pred_mode + 4) = NOT_VALID; } } } else { *(WORD32*)(pi1_left_pred_mode + 4) = NOT_VALID; } pi1_left_pred_mode[1] = pi1_left_pred_mode[2]; pi1_left_pred_mode[2] = pi1_left_pred_mode[4]; pi1_left_pred_mode[3] = pi1_left_pred_mode[6]; *(WORD32*)(pi1_left_pred_mode + 4) = *(WORD32*)pi1_left_pred_mode; } else { pi1_left_pred_mode[7] = pi1_left_pred_mode[3]; pi1_left_pred_mode[6] = pi1_left_pred_mode[3]; pi1_left_pred_mode[5] = pi1_left_pred_mode[2]; pi1_left_pred_mode[4] = pi1_left_pred_mode[2]; pi1_left_pred_mode[3] = pi1_left_pred_mode[1]; pi1_left_pred_mode[2] = pi1_left_pred_mode[1]; pi1_left_pred_mode[1] = pi1_left_pred_mode[0]; } } pi1_left_pred_mode += (u1_topmb) ? 0 : 4; } else { pi1_left_pred_mode += (u1_topmb) ? 0 : 4; if(u1_left_available) { if(ps_left_mb->u1_mb_type != I_4x4_MB) { *(WORD32*)pi1_left_pred_mode = (u2_use_left_mb_pack) ? DC_DC_DC_DC : NOT_VALID; } } else { *(WORD32*)pi1_left_pred_mode = NOT_VALID; } } } /* One time pointer initialisations*/ pi2_y_coeff1 = pi2_y_coeff; if(u1_use_top_left_mb) { pu1_top_left = pu1_ytop_left; } else { pu1_top_left = NULL; } /* Scan the sub-blocks in Raster Scan Order */ for(u1_sub_mb_num = 0; u1_sub_mb_num < 4; u1_sub_mb_num++) { u1_sub_blk_x = (u1_sub_mb_num & 0x1); u1_sub_blk_y = (u1_sub_mb_num >> 1); i1_top_pred_mode = pi1_cur_pred_mode[u1_sub_blk_x << 1]; i1_left_pred_mode = pi1_left_pred_mode[u1_sub_blk_y << 1]; if(2 == u1_sub_mb_num) { i1_left_pred_mode = pi1_left_pred_mode[(u1_sub_blk_y << 1) + u4_4x4_left_offset]; } u1_use_top_right_mb = (!!CHECKBIT(ui2_top_rt_mask, u1_sub_mb_num)); /*********** left subblock availability**********/ if(u1_sub_blk_x) { u1_is_left_sub_block = 1; } else { u1_is_left_sub_block = (u1_sub_blk_y < 1) ? (CHECKBIT(u2_use_left_mb_pack, 0)) : (u2_use_left_mb_pack >> 8); } /***************** Top *********************/ if(u1_sub_blk_y) { u1_is_top_sub_block = 1; // sushant pu1_top = /*pu1_luma_pred_buffer*/pu1_luma_rec_buffer - ui_rec_width; } else { pu1_top += 8; } /***************** Left *********************/ if((u1_sub_blk_x) | (u4_num_pmbair != 0)) { // sushant pu1_left = /*pu1_luma_pred_buffer*/pu1_luma_rec_buffer - 1; ui2_left_pred_buf_width = ui_rec_width; } else { pu1_left = pu1_yleft; pu1_yleft += (ui_rec_width << 3); ui2_left_pred_buf_width = ui_rec_width; } /***************** Top Left *********************/ if(u1_sub_mb_num) { pu1_top_left = (u1_sub_blk_x) ? pu1_top - 1 : pu1_left - ui_rec_width; if((u1_sub_blk_x && (!u1_is_top_sub_block)) || ((!u1_sub_blk_x) && (!u1_is_left_sub_block))) { pu1_top_left = NULL; } } /*---------------------------------------------------------------*/ /* Calculation of Intra prediction mode */ /*---------------------------------------------------------------*/ i1_intra_pred = ((i1_left_pred_mode < 0) | (i1_top_pred_mode < 0)) ? DC : MIN(i1_left_pred_mode, i1_top_pred_mode); { UWORD8 u1_packed_modes = (u1_is_top_sub_block << 1) + u1_is_left_sub_block; UWORD8 *pu1_intra_err_codes = (UWORD8 *)gau1_ih264d_intra_pred_err_code; /********************************************************************/ /* Same intra4x4_pred_mode array is filled with intra4x4_pred_mode */ /* for a MB with 8x8 intrapredicition */ /********************************************************************/ PROFILE_DISABLE_INTRA_PRED() if(!pu1_prev_intra4x4_pred_mode_flag[u1_sub_mb_num]) { i1_intra_pred = pu1_rem_intra4x4_pred_mode[u1_sub_mb_num] + (pu1_rem_intra4x4_pred_mode[u1_sub_mb_num] >= i1_intra_pred); } i1_intra_pred = CLIP3(0, 8, i1_intra_pred); { UWORD8 u1_err_code = pu1_intra_err_codes[i1_intra_pred]; if((u1_err_code & u1_packed_modes) ^ u1_err_code) { i1_intra_pred = 0; ps_dec->i4_error_code = ERROR_INTRAPRED; } } } { /* Align the size to multiple of 8, so that SIMD functions can read 64 bits at a time. Only 25 bytes are actaully used */ UWORD8 au1_ngbr_pels[32] = {0}; WORD32 ngbr_avail; ngbr_avail = u1_is_left_sub_block << 0; ngbr_avail |= u1_is_top_sub_block << 2; if(pu1_top_left) ngbr_avail |= 1 << 1; ngbr_avail |= u1_use_top_right_mb << 3; PROFILE_DISABLE_INTRA_PRED() { ps_dec->pf_intra_pred_ref_filtering(pu1_left, pu1_top_left, pu1_top, au1_ngbr_pels, ui2_left_pred_buf_width, ngbr_avail); ps_dec->apf_intra_pred_luma_8x8[i1_intra_pred]( au1_ngbr_pels, pu1_luma_rec_buffer, 1, ui_rec_width, ((u1_is_top_sub_block << 2) | u1_is_left_sub_block)); } } /* Inverse Transform and Reconstruction */ if(CHECKBIT(ps_cur_mb_info->u1_cbp, u1_sub_mb_num)) { WORD16 *pi2_scale_matrix_ptr; WORD16 ai2_tmp[64]; pi2_scale_matrix_ptr = ps_dec->s_high_profile.i2_scalinglist8x8[0]; PROFILE_DISABLE_IQ_IT_RECON() { if(CHECKBIT(u4_luma_dc_only_cbp, u1_sub_mb_num)) { ps_dec->pf_iquant_itrans_recon_luma_8x8_dc( pi2_y_coeff1, pu1_luma_rec_buffer, pu1_luma_rec_buffer, ui_rec_width, ui_rec_width, gau1_ih264d_dequant8x8_cavlc[ps_cur_mb_info->u1_qp_rem6], (UWORD16 *)pi2_scale_matrix_ptr, ps_cur_mb_info->u1_qp_div6, ai2_tmp, 0, NULL); } else { ps_dec->pf_iquant_itrans_recon_luma_8x8( pi2_y_coeff1, pu1_luma_rec_buffer, pu1_luma_rec_buffer, ui_rec_width, ui_rec_width, gau1_ih264d_dequant8x8_cavlc[ps_cur_mb_info->u1_qp_rem6], (UWORD16 *)pi2_scale_matrix_ptr, ps_cur_mb_info->u1_qp_div6, ai2_tmp, 0, NULL); } } } /*---------------------------------------------------------------*/ /* Update sub block number */ /*---------------------------------------------------------------*/ pi2_y_coeff1 += 64; pu1_luma_rec_buffer += (u1_sub_blk_x == 1) ? (ui_rec_width << 3) - (8 * 1) : 8; /*---------------------------------------------------------------*/ /* Pred mode filled in terms of 4x4 block so replicated in 2 */ /* locations. */ /*---------------------------------------------------------------*/ pi1_cur_pred_mode[u1_sub_blk_x << 1] = i1_intra_pred; pi1_cur_pred_mode[(u1_sub_blk_x << 1) + 1] = i1_intra_pred; pi1_left_pred_mode[u1_sub_blk_y << 1] = i1_intra_pred; pi1_left_pred_mode[(u1_sub_blk_y << 1) + 1] = i1_intra_pred; } } /* Decode Chroma Block */ ih264d_unpack_chroma_coeff4x4_mb(ps_dec, ps_cur_mb_info); /*--------------------------------------------------------------------*/ /* Chroma Blocks decoding */ /*--------------------------------------------------------------------*/ { UWORD8 u1_intra_chrom_pred_mode; UWORD8 u1_chroma_cbp = (UWORD8)(ps_cur_mb_info->u1_cbp >> 4); /*--------------------------------------------------------------------*/ /* Perform Chroma intra prediction */ /*--------------------------------------------------------------------*/ u1_intra_chrom_pred_mode = CHROMA_TO_LUMA_INTRA_MODE( ps_cur_mb_info->u1_chroma_pred_mode); { UWORD8 u1_packed_modes = (u1_top_available << 1) + u1_left_available; UWORD8 u1_err_code = (u1_intra_chrom_pred_mode & 1) ? u1_intra_chrom_pred_mode : (u1_intra_chrom_pred_mode ^ 2); if((u1_err_code & u1_packed_modes) ^ u1_err_code) { u1_intra_chrom_pred_mode = 0; ps_dec->i4_error_code = ERROR_INTRAPRED; } } /* CHANGED CODE */ if(u1_chroma_cbp != CBPC_ALLZERO) { UWORD16 u2_chroma_csbp = (u1_chroma_cbp == CBPC_ACZERO) ? 0 : ps_cur_mb_info->u2_chroma_csbp; UWORD32 u4_scale_u; UWORD32 u4_scale_v; { UWORD16 au2_ngbr_pels[33]; UWORD8 *pu1_ngbr_pels = (UWORD8 *)au2_ngbr_pels; UWORD16 *pu2_left_uv; UWORD16 *pu2_topleft_uv; WORD32 use_left1 = (u2_use_left_mb_pack & 0x0ff); WORD32 use_left2 = (u2_use_left_mb_pack & 0xff00) >> 8; pu2_left_uv = (UWORD16 *)pu1_uleft; pu2_topleft_uv = (UWORD16 *)pu1_u_top_left; /* Get neighbour pixels */ /* left pels */ if(u2_use_left_mb_pack) { WORD32 i; if(use_left1) { for(i = 0; i < 4; i++) au2_ngbr_pels[8 - 1 - i] = pu2_left_uv[i * u4_recwidth_cr / YUV420SP_FACTOR]; } else { memset(au2_ngbr_pels + 4, 0, 4 * sizeof(UWORD16)); } if(use_left2) { for(i = 4; i < 8; i++) au2_ngbr_pels[8 - 1 - i] = pu2_left_uv[i * u4_recwidth_cr / YUV420SP_FACTOR]; } else { memset(au2_ngbr_pels, 0, 4 * sizeof(UWORD16)); } } else { memset(au2_ngbr_pels, 0, 8 * sizeof(UWORD16)); } /* top left pels */ au2_ngbr_pels[8] = *pu2_topleft_uv; /* top pels */ if(uc_useTopMB) { memcpy(au2_ngbr_pels + 8 + 1, pu1_top_u, 8 * sizeof(UWORD16)); } else { memset(au2_ngbr_pels + 8 + 1, 0, 8 * sizeof(UWORD16)); } PROFILE_DISABLE_INTRA_PRED() ps_dec->apf_intra_pred_chroma[u1_intra_chrom_pred_mode]( pu1_ngbr_pels, pu1_mb_cb_rei1_buffer, 1, u4_recwidth_cr, ((uc_useTopMB << 2) | (use_left2 << 4) | use_left1)); } u4_scale_u = ps_cur_mb_info->u1_qpc_div6; u4_scale_v = ps_cur_mb_info->u1_qpcr_div6; pi2_y_coeff = ps_dec->pi2_coeff_data; { UWORD32 i; WORD16 ai2_tmp[16]; for(i = 0; i < 4; i++) { WORD16 *pi2_level = pi2_y_coeff + (i << 4); UWORD8 *pu1_pred_sblk = pu1_mb_cb_rei1_buffer + ((i & 0x1) * BLK_SIZE * YUV420SP_FACTOR) + (i >> 1) * (u4_recwidth_cr << 2); PROFILE_DISABLE_IQ_IT_RECON() { if(CHECKBIT(u2_chroma_csbp, i)) { ps_dec->pf_iquant_itrans_recon_chroma_4x4( pi2_level, pu1_pred_sblk, pu1_pred_sblk, u4_recwidth_cr, u4_recwidth_cr, gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qpc_rem6], (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[1], u4_scale_u, ai2_tmp, pi2_level); } else if(pi2_level[0] != 0) { ps_dec->pf_iquant_itrans_recon_chroma_4x4_dc( pi2_level, pu1_pred_sblk, pu1_pred_sblk, u4_recwidth_cr, u4_recwidth_cr, gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qpc_rem6], (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[1], u4_scale_u, ai2_tmp, pi2_level); } } } } pi2_y_coeff += MB_CHROM_SIZE; u2_chroma_csbp = u2_chroma_csbp >> 4; { UWORD32 i; WORD16 ai2_tmp[16]; for(i = 0; i < 4; i++) { WORD16 *pi2_level = pi2_y_coeff + (i << 4); UWORD8 *pu1_pred_sblk = pu1_mb_cb_rei1_buffer + 1 + ((i & 0x1) * BLK_SIZE * YUV420SP_FACTOR) + (i >> 1) * (u4_recwidth_cr << 2); PROFILE_DISABLE_IQ_IT_RECON() { if(CHECKBIT(u2_chroma_csbp, i)) { ps_dec->pf_iquant_itrans_recon_chroma_4x4( pi2_level, pu1_pred_sblk, pu1_pred_sblk, u4_recwidth_cr, u4_recwidth_cr, gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qpcr_rem6], (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[2], u4_scale_v, ai2_tmp, pi2_level); } else if(pi2_level[0] != 0) { ps_dec->pf_iquant_itrans_recon_chroma_4x4_dc( pi2_level, pu1_pred_sblk, pu1_pred_sblk, u4_recwidth_cr, u4_recwidth_cr, gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qpcr_rem6], (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[2], u4_scale_v, ai2_tmp, pi2_level); } } } } } else { /* If no inverse transform is needed, pass recon buffer pointer */ /* to Intraprediction module instead of pred buffer pointer */ { UWORD16 au2_ngbr_pels[33]; UWORD8 *pu1_ngbr_pels = (UWORD8 *)au2_ngbr_pels; UWORD16 *pu2_left_uv; UWORD16 *pu2_topleft_uv; WORD32 use_left1 = (u2_use_left_mb_pack & 0x0ff); WORD32 use_left2 = (u2_use_left_mb_pack & 0xff00) >> 8; pu2_topleft_uv = (UWORD16 *)pu1_u_top_left; pu2_left_uv = (UWORD16 *)pu1_uleft; /* Get neighbour pixels */ /* left pels */ if(u2_use_left_mb_pack) { WORD32 i; if(use_left1) { for(i = 0; i < 4; i++) au2_ngbr_pels[8 - 1 - i] = pu2_left_uv[i * u4_recwidth_cr / YUV420SP_FACTOR]; } else { memset(au2_ngbr_pels + 4, 0, 4 * sizeof(UWORD16)); } if(use_left2) { for(i = 4; i < 8; i++) au2_ngbr_pels[8 - 1 - i] = pu2_left_uv[i * u4_recwidth_cr / YUV420SP_FACTOR]; } else { memset(au2_ngbr_pels, 0, 4 * sizeof(UWORD16)); } } else { memset(au2_ngbr_pels, 0, 8 * sizeof(UWORD16)); } /* top left pels */ au2_ngbr_pels[8] = *pu2_topleft_uv; /* top pels */ if(uc_useTopMB) { memcpy(au2_ngbr_pels + 8 + 1, pu1_top_u, 8 * sizeof(UWORD16)); } else { memset(au2_ngbr_pels + 8 + 1, 0, 8 * sizeof(UWORD16)); } PROFILE_DISABLE_INTRA_PRED() ps_dec->apf_intra_pred_chroma[u1_intra_chrom_pred_mode]( pu1_ngbr_pels, pu1_mb_cb_rei1_buffer, 1, u4_recwidth_cr, ((uc_useTopMB << 2) | (use_left2 << 4) | use_left1)); } } } return OK; }