| /****************************************************************************** | |
| * | |
| * 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_parse_headers.c | |
| * | |
| * \brief | |
| * Contains High level syntax[above slice] parsing routines | |
| * | |
| * \date | |
| * 19/12/2002 | |
| * | |
| * \author AI | |
| ************************************************************************** | |
| */ | |
| #include <string.h> | |
| #include "ih264_typedefs.h" | |
| #include "ih264_macros.h" | |
| #include "ih264_platform_macros.h" | |
| #include "ih264_defs.h" | |
| #include "ih264d_bitstrm.h" | |
| #include "ih264d_structs.h" | |
| #include "ih264d_parse_cavlc.h" | |
| #include "ih264d_defs.h" | |
| #include "ih264d_defs.h" | |
| #include "ih264d_defs.h" | |
| #include "ih264d_parse_slice.h" | |
| #include "ih264d_tables.h" | |
| #include "ih264d_utils.h" | |
| #include "ih264d_nal.h" | |
| #include "ih264d_deblocking.h" | |
| #include "ih264d_mem_request.h" | |
| #include "ih264d_debug.h" | |
| #include "ih264d_error_handler.h" | |
| #include "ih264d_mb_utils.h" | |
| #include "ih264d_sei.h" | |
| #include "ih264d_vui.h" | |
| #include "ih264d_thread_parse_decode.h" | |
| #include "ih264d_thread_compute_bs.h" | |
| #include "ih264d_quant_scaling.h" | |
| #include "ih264d_defs.h" | |
| #include "ivd.h" | |
| #include "ih264d.h" | |
| /*****************************************************************************/ | |
| /* */ | |
| /* Function Name : ih264d_get_pre_sei_params */ | |
| /* */ | |
| /* Description : Gets valid pre-sei params in decoder struct from parse */ | |
| /* struct. */ | |
| /* Inputs : u1_nal_unit_type slice type */ | |
| /* ps_dec Decoder parameters */ | |
| /* Globals : None */ | |
| /* Outputs : None */ | |
| /* Returns : None */ | |
| /* */ | |
| /* Issues : None */ | |
| /* */ | |
| /* Revision History: */ | |
| /* */ | |
| /* DD MM YYYY Author(s) Changes (Describe the changes made) */ | |
| /* Draft */ | |
| /* */ | |
| /*****************************************************************************/ | |
| void ih264d_get_pre_sei_params(dec_struct_t *ps_dec, UWORD8 u1_nal_unit_type) | |
| { | |
| if((NULL != ps_dec->ps_sei) && | |
| ((0 == ps_dec->ps_sei->s_sei_ccv_params.u1_ccv_cancel_flag) && | |
| (0 == ps_dec->ps_sei->s_sei_ccv_params.u1_ccv_persistence_flag))) | |
| { | |
| ps_dec->ps_sei->u1_sei_ccv_params_present_flag = 0; | |
| memset(&ps_dec->ps_sei->s_sei_ccv_params, 0, sizeof(sei_ccv_params_t)); | |
| } | |
| if((NULL != ps_dec->ps_cur_sps) && | |
| ((1 == ps_dec->ps_cur_sps->u1_vui_parameters_present_flag) && | |
| ((2 != ps_dec->ps_cur_sps->s_vui.u1_colour_primaries) && | |
| (2 != ps_dec->ps_cur_sps->s_vui.u1_matrix_coeffs) && | |
| (2 != ps_dec->ps_cur_sps->s_vui.u1_tfr_chars) && | |
| (4 != ps_dec->ps_cur_sps->s_vui.u1_tfr_chars) && | |
| (5 != ps_dec->ps_cur_sps->s_vui.u1_tfr_chars)))) | |
| { | |
| if((1 == ps_dec->ps_sei_parse->u1_sei_ccv_params_present_flag) || | |
| (IDR_SLICE_NAL == u1_nal_unit_type)) | |
| { | |
| ps_dec->ps_sei->u1_sei_ccv_params_present_flag = | |
| ps_dec->ps_sei_parse->u1_sei_ccv_params_present_flag; | |
| ps_dec->ps_sei->s_sei_ccv_params = ps_dec->ps_sei_parse->s_sei_ccv_params; | |
| } | |
| } | |
| else | |
| { | |
| ps_dec->ps_sei->u1_sei_ccv_params_present_flag = 0; | |
| memset(&ps_dec->ps_sei->s_sei_ccv_params, 0, sizeof(sei_ccv_params_t)); | |
| } | |
| if(IDR_SLICE_NAL == u1_nal_unit_type) | |
| { | |
| ps_dec->ps_sei->u1_sei_mdcv_params_present_flag = | |
| ps_dec->ps_sei_parse->u1_sei_mdcv_params_present_flag; | |
| ps_dec->ps_sei->s_sei_mdcv_params = ps_dec->ps_sei_parse->s_sei_mdcv_params; | |
| ps_dec->ps_sei->u1_sei_cll_params_present_flag = | |
| ps_dec->ps_sei_parse->u1_sei_cll_params_present_flag; | |
| ps_dec->ps_sei->s_sei_cll_params = ps_dec->ps_sei_parse->s_sei_cll_params; | |
| ps_dec->ps_sei->u1_sei_ave_params_present_flag = | |
| ps_dec->ps_sei_parse->u1_sei_ave_params_present_flag; | |
| ps_dec->ps_sei->s_sei_ave_params = ps_dec->ps_sei_parse->s_sei_ave_params; | |
| ps_dec->ps_sei->u1_sei_sii_params_present_flag = | |
| ps_dec->ps_sei_parse->u1_sei_sii_params_present_flag; | |
| ps_dec->ps_sei->s_sei_sii_params = ps_dec->ps_sei_parse->s_sei_sii_params; | |
| } | |
| if(NULL != ps_dec->ps_sei) | |
| { | |
| ps_dec->ps_sei->u1_sei_fgc_params_present_flag = | |
| ps_dec->ps_sei_parse->u1_sei_fgc_params_present_flag; | |
| ps_dec->ps_sei->s_sei_fgc_params = ps_dec->ps_sei_parse->s_sei_fgc_params; | |
| } | |
| ps_dec->ps_sei_parse->u1_sei_mdcv_params_present_flag = 0; | |
| memset(&ps_dec->ps_sei_parse->s_sei_mdcv_params, 0, sizeof(sei_mdcv_params_t)); | |
| ps_dec->ps_sei_parse->u1_sei_cll_params_present_flag = 0; | |
| memset(&ps_dec->ps_sei_parse->s_sei_cll_params, 0, sizeof(sei_cll_params_t)); | |
| ps_dec->ps_sei_parse->u1_sei_ave_params_present_flag = 0; | |
| memset(&ps_dec->ps_sei_parse->s_sei_ave_params, 0, sizeof(sei_ave_params_t)); | |
| ps_dec->ps_sei_parse->u1_sei_ccv_params_present_flag = 0; | |
| memset(&ps_dec->ps_sei_parse->s_sei_ccv_params, 0, sizeof(sei_ccv_params_t)); | |
| ps_dec->ps_sei_parse->u1_sei_sii_params_present_flag = 0; | |
| memset(&ps_dec->ps_sei_parse->s_sei_sii_params, 0, sizeof(sei_sii_params_t)); | |
| } | |
| /*****************************************************************************/ | |
| /* */ | |
| /* Function Name : ih264d_parse_slice_partition */ | |
| /* */ | |
| /* Description : This function is intended to parse and decode slice part */ | |
| /* itions. Currently it's not implemented. Decoder will */ | |
| /* print a message, skips this NAL and continues */ | |
| /* Inputs : ps_dec Decoder parameters */ | |
| /* ps_bitstrm Bitstream */ | |
| /* Globals : None */ | |
| /* Processing : This functionality needs to be implemented */ | |
| /* Outputs : None */ | |
| /* Returns : None */ | |
| /* */ | |
| /* Issues : Not implemented */ | |
| /* */ | |
| /* Revision History: */ | |
| /* */ | |
| /* DD MM YYYY Author(s) Changes (Describe the changes made) */ | |
| /* 06 05 2002 NS Draft */ | |
| /* */ | |
| /*****************************************************************************/ | |
| WORD32 ih264d_parse_slice_partition(dec_struct_t * ps_dec, | |
| dec_bit_stream_t * ps_bitstrm) | |
| { | |
| H264_DEC_DEBUG_PRINT("\nSlice partition not supported"); | |
| UNUSED(ps_dec); | |
| UNUSED(ps_bitstrm); | |
| return (0); | |
| } | |
| /*****************************************************************************/ | |
| /* */ | |
| /* Function Name : ih264d_parse_sei */ | |
| /* */ | |
| /* Description : This function is intended to parse and decode SEI */ | |
| /* Currently it's not implemented. Decoder will print a */ | |
| /* message, skips this NAL and continues */ | |
| /* Inputs : ps_dec Decoder parameters */ | |
| /* ps_bitstrm Bitstream */ | |
| /* Globals : None */ | |
| /* Processing : This functionality needs to be implemented */ | |
| /* Outputs : None */ | |
| /* Returns : None */ | |
| /* */ | |
| /* Issues : Not implemented */ | |
| /* */ | |
| /* Revision History: */ | |
| /* */ | |
| /* DD MM YYYY Author(s) Changes (Describe the changes made) */ | |
| /* 06 05 2002 NS Draft */ | |
| /* */ | |
| /*****************************************************************************/ | |
| WORD32 ih264d_parse_sei(dec_struct_t * ps_dec, dec_bit_stream_t * ps_bitstrm) | |
| { | |
| UNUSED(ps_dec); | |
| UNUSED(ps_bitstrm); | |
| return (0); | |
| } | |
| /*****************************************************************************/ | |
| /* */ | |
| /* Function Name : ih264d_parse_filler_data */ | |
| /* */ | |
| /* Description : This function is intended to parse and decode filler */ | |
| /* data NAL. Currently it's not implemented. Decoder will */ | |
| /* print a message, skips this NAL and continues */ | |
| /* Inputs : ps_dec Decoder parameters */ | |
| /* ps_bitstrm Bitstream */ | |
| /* Globals : None */ | |
| /* Processing : This functionality needs to be implemented */ | |
| /* Outputs : None */ | |
| /* Returns : None */ | |
| /* */ | |
| /* Issues : Not implemented */ | |
| /* */ | |
| /* Revision History: */ | |
| /* */ | |
| /* DD MM YYYY Author(s) Changes (Describe the changes made) */ | |
| /* 06 05 2002 NS Draft */ | |
| /* */ | |
| /*****************************************************************************/ | |
| WORD32 ih264d_parse_filler_data(dec_struct_t * ps_dec, | |
| dec_bit_stream_t * ps_bitstrm) | |
| { | |
| UNUSED(ps_dec); | |
| UNUSED(ps_bitstrm); | |
| return (0); | |
| } | |
| /*****************************************************************************/ | |
| /* */ | |
| /* Function Name : ih264d_parse_end_of_stream */ | |
| /* */ | |
| /* Description : This function is intended to parse and decode end of */ | |
| /* sequence. Currently it's not implemented. Decoder will */ | |
| /* print a message, skips this NAL and continues */ | |
| /* Inputs : ps_dec Decoder parameters */ | |
| /* Globals : None */ | |
| /* Processing : This functionality needs to be implemented */ | |
| /* Outputs : None */ | |
| /* Returns : None */ | |
| /* */ | |
| /* Issues : Not implemented */ | |
| /* */ | |
| /* Revision History: */ | |
| /* */ | |
| /* DD MM YYYY Author(s) Changes (Describe the changes made) */ | |
| /* 06 05 2002 NS Draft */ | |
| /* */ | |
| /*****************************************************************************/ | |
| void ih264d_parse_end_of_stream(dec_struct_t * ps_dec) | |
| { | |
| UNUSED(ps_dec); | |
| return; | |
| } | |
| /*! | |
| ************************************************************************** | |
| * \if Function name : ih264d_parse_pps \endif | |
| * | |
| * \brief | |
| * Decodes Picture Parameter set | |
| * | |
| * \return | |
| * 0 on Success and Error code otherwise | |
| ************************************************************************** | |
| */ | |
| WORD32 ih264d_parse_pps(dec_struct_t * ps_dec, dec_bit_stream_t * ps_bitstrm) | |
| { | |
| UWORD8 uc_temp; | |
| dec_seq_params_t * ps_sps = NULL; | |
| dec_pic_params_t * ps_pps = NULL; | |
| UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer; | |
| UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst; | |
| /* Variables used for error resilience checks */ | |
| UWORD64 u8_temp; | |
| UWORD32 u4_temp; | |
| WORD32 i_temp; | |
| /* For High profile related syntax elements */ | |
| UWORD8 u1_more_data_flag; | |
| WORD32 i4_i; | |
| if(!(ps_dec->i4_header_decoded & 1)) | |
| return ERROR_INV_SPS_PPS_T; | |
| /*--------------------------------------------------------------------*/ | |
| /* Decode pic_parameter_set_id and find corresponding pic params */ | |
| /*--------------------------------------------------------------------*/ | |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u4_temp & MASK_ERR_PIC_SET_ID) | |
| return ERROR_INV_SPS_PPS_T; | |
| ps_pps = ps_dec->pv_scratch_sps_pps; | |
| *ps_pps = ps_dec->ps_pps[u4_temp]; | |
| ps_pps->u1_pic_parameter_set_id = (WORD8)u4_temp; | |
| COPYTHECONTEXT("PPS: pic_parameter_set_id",ps_pps->u1_pic_parameter_set_id); | |
| /************************************************/ | |
| /* initilization of High profile syntax element */ | |
| /************************************************/ | |
| ps_pps->i4_transform_8x8_mode_flag = 0; | |
| ps_pps->i4_pic_scaling_matrix_present_flag = 0; | |
| /*--------------------------------------------------------------------*/ | |
| /* Decode seq_parameter_set_id and map it to a seq_parameter_set */ | |
| /*--------------------------------------------------------------------*/ | |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u4_temp & MASK_ERR_SEQ_SET_ID) | |
| return ERROR_INV_SPS_PPS_T; | |
| COPYTHECONTEXT("PPS: seq_parameter_set_id",u4_temp); | |
| ps_sps = &ps_dec->ps_sps[u4_temp]; | |
| if(FALSE == ps_sps->u1_is_valid) | |
| return ERROR_INV_SPS_PPS_T; | |
| ps_pps->ps_sps = ps_sps; | |
| /*--------------------------------------------------------------------*/ | |
| /* Decode entropy_coding_mode */ | |
| /*--------------------------------------------------------------------*/ | |
| ps_pps->u1_entropy_coding_mode = ih264d_get_bit_h264(ps_bitstrm); | |
| COPYTHECONTEXT("PPS: entropy_coding_mode_flag",ps_pps->u1_entropy_coding_mode); | |
| ps_pps->u1_pic_order_present_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| COPYTHECONTEXT("PPS: pic_order_present_flag",ps_pps->u1_pic_order_present_flag); | |
| /*--------------------------------------------------------------------*/ | |
| /* Decode num_slice_groups_minus1 */ | |
| /*--------------------------------------------------------------------*/ | |
| u8_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + (UWORD64)1; | |
| if(u8_temp != 1) | |
| { | |
| return ERROR_FEATURE_UNAVAIL; | |
| } | |
| ps_pps->u1_num_slice_groups = u8_temp; | |
| COPYTHECONTEXT("PPS: num_slice_groups_minus1",ps_pps->u1_num_slice_groups -1); | |
| /*--------------------------------------------------------------------*/ | |
| /* Other parameter set values */ | |
| /*--------------------------------------------------------------------*/ | |
| u8_temp = (UWORD64)1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u8_temp > H264_MAX_REF_IDX) | |
| return ERROR_REF_IDX; | |
| ps_pps->u1_num_ref_idx_lx_active[0] = u8_temp; | |
| COPYTHECONTEXT("PPS: num_ref_idx_l0_active_minus1", | |
| ps_pps->u1_num_ref_idx_lx_active[0] - 1); | |
| u8_temp = (UWORD64)1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u8_temp > H264_MAX_REF_IDX) | |
| return ERROR_REF_IDX; | |
| ps_pps->u1_num_ref_idx_lx_active[1] = u8_temp; | |
| COPYTHECONTEXT("PPS: num_ref_idx_l1_active_minus1", | |
| ps_pps->u1_num_ref_idx_lx_active[1] - 1); | |
| ps_pps->u1_wted_pred_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| COPYTHECONTEXT("PPS: weighted prediction u4_flag",ps_pps->u1_wted_pred_flag); | |
| uc_temp = ih264d_get_bits_h264(ps_bitstrm, 2); | |
| COPYTHECONTEXT("PPS: weighted_bipred_idc",uc_temp); | |
| ps_pps->u1_wted_bipred_idc = uc_temp; | |
| if(ps_pps->u1_wted_bipred_idc > MAX_WEIGHT_BIPRED_IDC) | |
| return ERROR_INV_SPS_PPS_T; | |
| { | |
| WORD64 i8_temp; | |
| i8_temp = (WORD64)26 + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) | |
| return ERROR_INV_RANGE_QP_T; | |
| ps_pps->u1_pic_init_qp = i8_temp; | |
| COPYTHECONTEXT("PPS: pic_init_qp_minus26",ps_pps->u1_pic_init_qp - 26); | |
| i8_temp = (WORD64)26 + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) | |
| return ERROR_INV_RANGE_QP_T; | |
| ps_pps->u1_pic_init_qs = i8_temp; | |
| COPYTHECONTEXT("PPS: pic_init_qs_minus26",ps_pps->u1_pic_init_qs - 26); | |
| } | |
| i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if((i_temp < -12) || (i_temp > 12)) | |
| return ERROR_INV_RANGE_QP_T; | |
| ps_pps->i1_chroma_qp_index_offset = i_temp; | |
| COPYTHECONTEXT("PPS: chroma_qp_index_offset",ps_pps->i1_chroma_qp_index_offset); | |
| /***************************************************************************/ | |
| /* initialize second_chroma_qp_index_offset to i1_chroma_qp_index_offset if */ | |
| /* second_chroma_qp_index_offset is not present in bit-ps_bitstrm */ | |
| /***************************************************************************/ | |
| ps_pps->i1_second_chroma_qp_index_offset = | |
| ps_pps->i1_chroma_qp_index_offset; | |
| ps_pps->u1_deblocking_filter_parameters_present_flag = ih264d_get_bit_h264( | |
| ps_bitstrm); | |
| COPYTHECONTEXT("PPS: deblocking_filter_control_present_flag", | |
| ps_pps->u1_deblocking_filter_parameters_present_flag); | |
| ps_pps->u1_constrained_intra_pred_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| COPYTHECONTEXT("PPS: constrained_intra_pred_flag", | |
| ps_pps->u1_constrained_intra_pred_flag); | |
| ps_pps->u1_redundant_pic_cnt_present_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| COPYTHECONTEXT("PPS: redundant_pic_cnt_present_flag", | |
| ps_pps->u1_redundant_pic_cnt_present_flag); | |
| /* High profile related syntax elements */ | |
| u1_more_data_flag = MORE_RBSP_DATA(ps_bitstrm); | |
| if(u1_more_data_flag) | |
| { | |
| /* read transform_8x8_mode_flag */ | |
| ps_pps->i4_transform_8x8_mode_flag = (WORD32)ih264d_get_bit_h264( | |
| ps_bitstrm); | |
| /* read pic_scaling_matrix_present_flag */ | |
| ps_pps->i4_pic_scaling_matrix_present_flag = | |
| (WORD32)ih264d_get_bit_h264(ps_bitstrm); | |
| if(ps_pps->i4_pic_scaling_matrix_present_flag) | |
| { | |
| /* read the scaling matrices */ | |
| for(i4_i = 0; i4_i < (6 + (ps_pps->i4_transform_8x8_mode_flag << 1)); i4_i++) | |
| { | |
| ps_pps->u1_pic_scaling_list_present_flag[i4_i] = | |
| ih264d_get_bit_h264(ps_bitstrm); | |
| if(ps_pps->u1_pic_scaling_list_present_flag[i4_i]) | |
| { | |
| WORD32 ret; | |
| if(i4_i < 6) | |
| { | |
| ret = ih264d_scaling_list( | |
| ps_pps->i2_pic_scalinglist4x4[i4_i], | |
| 16, | |
| &ps_pps->u1_pic_use_default_scaling_matrix_flag[i4_i], | |
| ps_bitstrm); | |
| } | |
| else | |
| { | |
| ret = ih264d_scaling_list( | |
| ps_pps->i2_pic_scalinglist8x8[i4_i - 6], | |
| 64, | |
| &ps_pps->u1_pic_use_default_scaling_matrix_flag[i4_i], | |
| ps_bitstrm); | |
| } | |
| if(ret != OK) | |
| { | |
| return ret; | |
| } | |
| } | |
| } | |
| } | |
| /* read second_chroma_qp_index_offset syntax element */ | |
| i_temp = ih264d_sev( | |
| pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if((i_temp < -12) || (i_temp > 12)) | |
| return ERROR_INV_RANGE_QP_T; | |
| ps_pps->i1_second_chroma_qp_index_offset = i_temp; | |
| } | |
| /* In case bitstream read has exceeded the filled size, then | |
| return an error */ | |
| if(EXCEED_OFFSET(ps_bitstrm)) | |
| { | |
| return ERROR_INV_SPS_PPS_T; | |
| } | |
| ps_pps->u1_is_valid = TRUE; | |
| ps_dec->ps_pps[ps_pps->u1_pic_parameter_set_id] = *ps_pps; | |
| return OK; | |
| } | |
| /*! | |
| ************************************************************************** | |
| * \if Function name : ih264d_parse_sps \endif | |
| * | |
| * \brief | |
| * Decodes Sequence parameter set from the bitstream | |
| * | |
| * \return | |
| * 0 on Success and Error code otherwise | |
| ************************************************************************** | |
| */ | |
| UWORD32 ih264d_correct_level_idc(UWORD32 u4_level_idc, UWORD32 u4_total_mbs) | |
| { | |
| UWORD32 u4_max_mbs_allowed; | |
| switch(u4_level_idc) | |
| { | |
| case H264_LEVEL_1_0: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_10; | |
| break; | |
| case H264_LEVEL_1_1: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_11; | |
| break; | |
| case H264_LEVEL_1_2: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_12; | |
| break; | |
| case H264_LEVEL_1_3: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_13; | |
| break; | |
| case H264_LEVEL_2_0: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_20; | |
| break; | |
| case H264_LEVEL_2_1: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_21; | |
| break; | |
| case H264_LEVEL_2_2: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_22; | |
| break; | |
| case H264_LEVEL_3_0: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_30; | |
| break; | |
| case H264_LEVEL_3_1: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_31; | |
| break; | |
| case H264_LEVEL_3_2: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_32; | |
| break; | |
| case H264_LEVEL_4_0: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_40; | |
| break; | |
| case H264_LEVEL_4_1: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_41; | |
| break; | |
| case H264_LEVEL_4_2: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_42; | |
| break; | |
| case H264_LEVEL_5_0: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_50; | |
| break; | |
| case H264_LEVEL_5_1: | |
| default: | |
| u4_max_mbs_allowed = MAX_MBS_LEVEL_51; | |
| break; | |
| } | |
| /*correct of the level is incorrect*/ | |
| if(u4_total_mbs > u4_max_mbs_allowed) | |
| { | |
| if(u4_total_mbs > MAX_MBS_LEVEL_50) | |
| u4_level_idc = H264_LEVEL_5_1; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_42) | |
| u4_level_idc = H264_LEVEL_5_0; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_41) | |
| u4_level_idc = H264_LEVEL_4_2; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_40) | |
| u4_level_idc = H264_LEVEL_4_1; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_32) | |
| u4_level_idc = H264_LEVEL_4_0; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_31) | |
| u4_level_idc = H264_LEVEL_3_2; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_30) | |
| u4_level_idc = H264_LEVEL_3_1; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_21) | |
| u4_level_idc = H264_LEVEL_3_0; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_20) | |
| u4_level_idc = H264_LEVEL_2_1; | |
| else if(u4_total_mbs > MAX_MBS_LEVEL_10) | |
| u4_level_idc = H264_LEVEL_2_0; | |
| } | |
| return (u4_level_idc); | |
| } | |
| WORD32 ih264d_parse_sps(dec_struct_t *ps_dec, dec_bit_stream_t *ps_bitstrm) | |
| { | |
| UWORD8 i; | |
| dec_seq_params_t *ps_seq = NULL; | |
| UWORD8 u1_profile_idc, u1_level_idc, u1_seq_parameter_set_id, u1_mb_aff_flag = 0; | |
| UWORD32 u4_max_frm_num; | |
| UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; | |
| UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; | |
| UWORD8 u1_frm, uc_constraint_set0_flag, uc_constraint_set1_flag; | |
| WORD32 i4_cropped_ht, i4_cropped_wd; | |
| UWORD32 u4_temp; | |
| UWORD64 u8_temp; | |
| UWORD32 u4_pic_height_in_map_units, u4_pic_width_in_mbs; | |
| UWORD32 u2_pic_wd = 0; | |
| UWORD32 u2_pic_ht = 0; | |
| UWORD32 u2_frm_wd_y = 0; | |
| UWORD32 u2_frm_ht_y = 0; | |
| UWORD32 u2_frm_wd_uv = 0; | |
| UWORD32 u2_frm_ht_uv = 0; | |
| UWORD32 u2_crop_offset_y = 0; | |
| UWORD32 u2_crop_offset_uv = 0; | |
| WORD32 ret; | |
| WORD32 num_reorder_frames; | |
| /* High profile related syntax element */ | |
| WORD32 i4_i; | |
| /* G050 */ | |
| UWORD8 u1_frame_cropping_flag, u1_frame_cropping_rect_left_ofst, | |
| u1_frame_cropping_rect_right_ofst, | |
| u1_frame_cropping_rect_top_ofst, | |
| u1_frame_cropping_rect_bottom_ofst; | |
| /* G050 */ | |
| /*--------------------------------------------------------------------*/ | |
| /* Decode seq_parameter_set_id and profile and level values */ | |
| /*--------------------------------------------------------------------*/ | |
| SWITCHONTRACE; | |
| u1_profile_idc = ih264d_get_bits_h264(ps_bitstrm, 8); | |
| COPYTHECONTEXT("SPS: profile_idc",u1_profile_idc); | |
| /* G050 */ | |
| uc_constraint_set0_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| uc_constraint_set1_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| ih264d_get_bit_h264(ps_bitstrm); | |
| /*****************************************************/ | |
| /* Read 5 bits for uc_constraint_set3_flag (1 bit) */ | |
| /* and reserved_zero_4bits (4 bits) - Sushant */ | |
| /*****************************************************/ | |
| ih264d_get_bits_h264(ps_bitstrm, 5); | |
| /* G050 */ | |
| /* Check whether particular profile is suported or not */ | |
| /* Check whether particular profile is suported or not */ | |
| if((u1_profile_idc != MAIN_PROFILE_IDC) && | |
| (u1_profile_idc != BASE_PROFILE_IDC) && | |
| (u1_profile_idc != HIGH_PROFILE_IDC) | |
| ) | |
| { | |
| /* Apart from Baseline, main and high profile, | |
| * only extended profile is supported provided | |
| * uc_constraint_set0_flag or uc_constraint_set1_flag are set to 1 | |
| */ | |
| if((u1_profile_idc != EXTENDED_PROFILE_IDC) || | |
| ((uc_constraint_set1_flag != 1) && (uc_constraint_set0_flag != 1))) | |
| { | |
| return (ERROR_FEATURE_UNAVAIL); | |
| } | |
| } | |
| u1_level_idc = ih264d_get_bits_h264(ps_bitstrm, 8); | |
| COPYTHECONTEXT("SPS: u4_level_idc",u1_level_idc); | |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u4_temp & MASK_ERR_SEQ_SET_ID) | |
| return ERROR_INV_SPS_PPS_T; | |
| u1_seq_parameter_set_id = u4_temp; | |
| COPYTHECONTEXT("SPS: seq_parameter_set_id", | |
| u1_seq_parameter_set_id); | |
| /*--------------------------------------------------------------------*/ | |
| /* Find an seq param entry in seqparam array of decStruct */ | |
| /*--------------------------------------------------------------------*/ | |
| ps_seq = ps_dec->pv_scratch_sps_pps; | |
| memset(ps_seq, 0, sizeof(dec_seq_params_t)); | |
| if(ps_dec->i4_header_decoded & 1) | |
| { | |
| *ps_seq = *ps_dec->ps_cur_sps; | |
| } | |
| if((ps_dec->i4_header_decoded & 1) && (ps_seq->u1_profile_idc != u1_profile_idc)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| if((ps_dec->i4_header_decoded & 1) && (ps_seq->u1_level_idc != u1_level_idc)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| ps_seq->u1_profile_idc = u1_profile_idc; | |
| ps_seq->u1_level_idc = u1_level_idc; | |
| ps_seq->u1_seq_parameter_set_id = u1_seq_parameter_set_id; | |
| /*******************************************************************/ | |
| /* Initializations for high profile - Sushant */ | |
| /*******************************************************************/ | |
| ps_seq->i4_chroma_format_idc = 1; | |
| ps_seq->i4_bit_depth_luma_minus8 = 0; | |
| ps_seq->i4_bit_depth_chroma_minus8 = 0; | |
| ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 0; | |
| ps_seq->i4_seq_scaling_matrix_present_flag = 0; | |
| if(u1_profile_idc == HIGH_PROFILE_IDC) | |
| { | |
| /* reading chroma_format_idc */ | |
| ps_seq->i4_chroma_format_idc = ih264d_uev(pu4_bitstrm_ofst, | |
| pu4_bitstrm_buf); | |
| /* Monochrome is not supported */ | |
| if(ps_seq->i4_chroma_format_idc != 1) | |
| { | |
| return ERROR_FEATURE_UNAVAIL; | |
| } | |
| /* reading bit_depth_luma_minus8 */ | |
| ps_seq->i4_bit_depth_luma_minus8 = ih264d_uev(pu4_bitstrm_ofst, | |
| pu4_bitstrm_buf); | |
| if(ps_seq->i4_bit_depth_luma_minus8 != 0) | |
| { | |
| return ERROR_FEATURE_UNAVAIL; | |
| } | |
| /* reading bit_depth_chroma_minus8 */ | |
| ps_seq->i4_bit_depth_chroma_minus8 = ih264d_uev(pu4_bitstrm_ofst, | |
| pu4_bitstrm_buf); | |
| if(ps_seq->i4_bit_depth_chroma_minus8 != 0) | |
| { | |
| return ERROR_FEATURE_UNAVAIL; | |
| } | |
| /* reading qpprime_y_zero_transform_bypass_flag */ | |
| ps_seq->i4_qpprime_y_zero_transform_bypass_flag = | |
| (WORD32)ih264d_get_bit_h264(ps_bitstrm); | |
| if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0) | |
| { | |
| return ERROR_INV_SPS_PPS_T; | |
| } | |
| /* reading seq_scaling_matrix_present_flag */ | |
| ps_seq->i4_seq_scaling_matrix_present_flag = | |
| (WORD32)ih264d_get_bit_h264(ps_bitstrm); | |
| if(ps_seq->i4_seq_scaling_matrix_present_flag) | |
| { | |
| for(i4_i = 0; i4_i < 8; i4_i++) | |
| { | |
| ps_seq->u1_seq_scaling_list_present_flag[i4_i] = | |
| ih264d_get_bit_h264(ps_bitstrm); | |
| /* initialize u1_use_default_scaling_matrix_flag[i4_i] to zero */ | |
| /* before calling scaling list */ | |
| ps_seq->u1_use_default_scaling_matrix_flag[i4_i] = 0; | |
| if(ps_seq->u1_seq_scaling_list_present_flag[i4_i]) | |
| { | |
| if(i4_i < 6) | |
| { | |
| ret = ih264d_scaling_list( | |
| ps_seq->i2_scalinglist4x4[i4_i], | |
| 16, | |
| &ps_seq->u1_use_default_scaling_matrix_flag[i4_i], | |
| ps_bitstrm); | |
| } | |
| else | |
| { | |
| ret = ih264d_scaling_list( | |
| ps_seq->i2_scalinglist8x8[i4_i - 6], | |
| 64, | |
| &ps_seq->u1_use_default_scaling_matrix_flag[i4_i], | |
| ps_bitstrm); | |
| } | |
| if(ret != OK) | |
| { | |
| return ret; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| /*--------------------------------------------------------------------*/ | |
| /* Decode MaxFrameNum */ | |
| /*--------------------------------------------------------------------*/ | |
| u8_temp = (UWORD64)4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u8_temp > MAX_BITS_IN_FRAME_NUM) | |
| { | |
| return ERROR_INV_SPS_PPS_T; | |
| } | |
| ps_seq->u1_bits_in_frm_num = u8_temp; | |
| COPYTHECONTEXT("SPS: log2_max_frame_num_minus4", | |
| (ps_seq->u1_bits_in_frm_num - 4)); | |
| u4_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num)); | |
| ps_seq->u2_u4_max_pic_num_minus1 = u4_max_frm_num - 1; | |
| /*--------------------------------------------------------------------*/ | |
| /* Decode picture order count and related values */ | |
| /*--------------------------------------------------------------------*/ | |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u4_temp > MAX_PIC_ORDER_CNT_TYPE) | |
| { | |
| return ERROR_INV_POC_TYPE_T; | |
| } | |
| ps_seq->u1_pic_order_cnt_type = u4_temp; | |
| COPYTHECONTEXT("SPS: pic_order_cnt_type",ps_seq->u1_pic_order_cnt_type); | |
| ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = 1; | |
| if(ps_seq->u1_pic_order_cnt_type == 0) | |
| { | |
| u8_temp = (UWORD64)4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u8_temp > MAX_BITS_IN_POC_LSB) | |
| { | |
| return ERROR_INV_SPS_PPS_T; | |
| } | |
| ps_seq->u1_log2_max_pic_order_cnt_lsb_minus = u8_temp; | |
| ps_seq->i4_max_pic_order_cntLsb = (1 << u8_temp); | |
| COPYTHECONTEXT("SPS: log2_max_pic_order_cnt_lsb_minus4",(u8_temp - 4)); | |
| } | |
| else if(ps_seq->u1_pic_order_cnt_type == 1) | |
| { | |
| ps_seq->u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264( | |
| ps_bitstrm); | |
| COPYTHECONTEXT("SPS: delta_pic_order_always_zero_flag", | |
| ps_seq->u1_delta_pic_order_always_zero_flag); | |
| ps_seq->i4_ofst_for_non_ref_pic = ih264d_sev(pu4_bitstrm_ofst, | |
| pu4_bitstrm_buf); | |
| COPYTHECONTEXT("SPS: offset_for_non_ref_pic", | |
| ps_seq->i4_ofst_for_non_ref_pic); | |
| ps_seq->i4_ofst_for_top_to_bottom_field = ih264d_sev( | |
| pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| COPYTHECONTEXT("SPS: offset_for_top_to_bottom_field", | |
| ps_seq->i4_ofst_for_top_to_bottom_field); | |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if(u4_temp > 255) | |
| return ERROR_INV_SPS_PPS_T; | |
| ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp; | |
| COPYTHECONTEXT("SPS: num_ref_frames_in_pic_order_cnt_cycle", | |
| ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle); | |
| for(i = 0; i < ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle; i++) | |
| { | |
| ps_seq->i4_ofst_for_ref_frame[i] = ih264d_sev( | |
| pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| COPYTHECONTEXT("SPS: offset_for_ref_frame", | |
| ps_seq->i4_ofst_for_ref_frame[i]); | |
| } | |
| } | |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if((u4_temp > H264_MAX_REF_PICS)) | |
| { | |
| return ERROR_NUM_REF; | |
| } | |
| /* Compare with older num_ref_frames is header is already once */ | |
| if((ps_dec->i4_header_decoded & 1) && (ps_seq->u1_num_ref_frames != u4_temp)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| ps_seq->u1_num_ref_frames = u4_temp; | |
| COPYTHECONTEXT("SPS: num_ref_frames",ps_seq->u1_num_ref_frames); | |
| ps_seq->u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264( | |
| ps_bitstrm); | |
| COPYTHECONTEXT("SPS: gaps_in_frame_num_value_allowed_flag", | |
| ps_seq->u1_gaps_in_frame_num_value_allowed_flag); | |
| /*--------------------------------------------------------------------*/ | |
| /* Decode FrameWidth and FrameHeight and related values */ | |
| /*--------------------------------------------------------------------*/ | |
| u8_temp = (UWORD64)1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| /* Check for unsupported resolutions*/ | |
| if(u8_temp > (H264_MAX_FRAME_WIDTH >> 4)) | |
| { | |
| return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; | |
| } | |
| u4_pic_width_in_mbs = u8_temp; | |
| COPYTHECONTEXT("SPS: pic_width_in_mbs_minus1", | |
| u4_pic_width_in_mbs - 1); | |
| u8_temp = (UWORD64)1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); | |
| if (u8_temp > (H264_MAX_FRAME_HEIGHT >> 4)) | |
| { | |
| return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; | |
| } | |
| u4_pic_height_in_map_units = u8_temp; | |
| ps_seq->u2_frm_wd_in_mbs = u4_pic_width_in_mbs; | |
| ps_seq->u2_frm_ht_in_mbs = u4_pic_height_in_map_units; | |
| u2_pic_wd = (u4_pic_width_in_mbs << 4); | |
| u2_pic_ht = (u4_pic_height_in_map_units << 4); | |
| /*--------------------------------------------------------------------*/ | |
| /* Get the value of MaxMbAddress and Number of bits needed for it */ | |
| /*--------------------------------------------------------------------*/ | |
| ps_seq->u4_max_mb_addr = ((UWORD32)ps_seq->u2_frm_wd_in_mbs | |
| * (UWORD32)ps_seq->u2_frm_ht_in_mbs) - 1; | |
| ps_seq->u4_total_num_of_mbs = ps_seq->u4_max_mb_addr + 1; | |
| ps_seq->u1_level_idc = ih264d_correct_level_idc( | |
| u1_level_idc, ps_seq->u4_total_num_of_mbs); | |
| u1_frm = ih264d_get_bit_h264(ps_bitstrm); | |
| if((ps_dec->i4_header_decoded & 1) && (ps_seq->u1_frame_mbs_only_flag != u1_frm)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| ps_seq->u1_frame_mbs_only_flag = u1_frm; | |
| COPYTHECONTEXT("SPS: frame_mbs_only_flag", u1_frm); | |
| if(!u1_frm) | |
| u1_mb_aff_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| if((ps_dec->i4_header_decoded & 1) | |
| && (ps_seq->u1_mb_aff_flag != u1_mb_aff_flag)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| if(!u1_frm) | |
| { | |
| u2_pic_ht <<= 1; | |
| ps_seq->u1_mb_aff_flag = u1_mb_aff_flag; | |
| COPYTHECONTEXT("SPS: mb_adaptive_frame_field_flag", | |
| ps_seq->u1_mb_aff_flag); | |
| } | |
| else | |
| ps_seq->u1_mb_aff_flag = 0; | |
| ps_seq->u1_direct_8x8_inference_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| COPYTHECONTEXT("SPS: direct_8x8_inference_flag", | |
| ps_seq->u1_direct_8x8_inference_flag); | |
| /* G050 */ | |
| u1_frame_cropping_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| COPYTHECONTEXT("SPS: frame_cropping_flag",u1_frame_cropping_flag); | |
| if(u1_frame_cropping_flag) | |
| { | |
| u1_frame_cropping_rect_left_ofst = ih264d_uev(pu4_bitstrm_ofst, | |
| pu4_bitstrm_buf); | |
| COPYTHECONTEXT("SPS: frame_cropping_rect_left_offset", | |
| u1_frame_cropping_rect_left_ofst); | |
| u1_frame_cropping_rect_right_ofst = ih264d_uev(pu4_bitstrm_ofst, | |
| pu4_bitstrm_buf); | |
| COPYTHECONTEXT("SPS: frame_cropping_rect_right_offset", | |
| u1_frame_cropping_rect_right_ofst); | |
| u1_frame_cropping_rect_top_ofst = ih264d_uev(pu4_bitstrm_ofst, | |
| pu4_bitstrm_buf); | |
| COPYTHECONTEXT("SPS: frame_cropping_rect_top_offset", | |
| u1_frame_cropping_rect_top_ofst); | |
| u1_frame_cropping_rect_bottom_ofst = ih264d_uev(pu4_bitstrm_ofst, | |
| pu4_bitstrm_buf); | |
| COPYTHECONTEXT("SPS: frame_cropping_rect_bottom_offset", | |
| u1_frame_cropping_rect_bottom_ofst); | |
| } | |
| /* G050 */ | |
| ps_seq->u1_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm); | |
| COPYTHECONTEXT("SPS: vui_parameters_present_flag", | |
| ps_seq->u1_vui_parameters_present_flag); | |
| u2_frm_wd_y = u2_pic_wd + (UWORD8)(PAD_LEN_Y_H << 1); | |
| if(1 == ps_dec->u4_share_disp_buf) | |
| { | |
| if(ps_dec->u4_app_disp_width > u2_frm_wd_y) | |
| u2_frm_wd_y = ps_dec->u4_app_disp_width; | |
| } | |
| u2_frm_ht_y = u2_pic_ht + (UWORD8)(PAD_LEN_Y_V << 2); | |
| u2_frm_wd_uv = u2_pic_wd + (UWORD8)(PAD_LEN_UV_H << 2); | |
| u2_frm_wd_uv = MAX(u2_frm_wd_uv, u2_frm_wd_y); | |
| u2_frm_ht_uv = (u2_pic_ht >> 1) + (UWORD8)(PAD_LEN_UV_V << 2); | |
| u2_frm_ht_uv = MAX(u2_frm_ht_uv, (u2_frm_ht_y >> 1)); | |
| /* Calculate display picture width, height and start u4_ofst from YUV420 */ | |
| /* pictute buffers as per cropping information parsed above */ | |
| { | |
| UWORD16 u2_rgt_ofst = 0; | |
| UWORD16 u2_lft_ofst = 0; | |
| UWORD16 u2_top_ofst = 0; | |
| UWORD16 u2_btm_ofst = 0; | |
| UWORD8 u1_frm_mbs_flag; | |
| UWORD8 u1_vert_mult_factor; | |
| if(u1_frame_cropping_flag) | |
| { | |
| /* Calculate right and left u4_ofst for cropped picture */ | |
| u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1; | |
| u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1; | |
| /* Know frame MBs only u4_flag */ | |
| u1_frm_mbs_flag = (1 == ps_seq->u1_frame_mbs_only_flag); | |
| /* Simplify the vertical u4_ofst calculation from field/frame */ | |
| u1_vert_mult_factor = (2 - u1_frm_mbs_flag); | |
| /* Calculate bottom and top u4_ofst for cropped picture */ | |
| u2_btm_ofst = (u1_frame_cropping_rect_bottom_ofst | |
| << u1_vert_mult_factor); | |
| u2_top_ofst = (u1_frame_cropping_rect_top_ofst | |
| << u1_vert_mult_factor); | |
| } | |
| /* Calculate u4_ofst from start of YUV 420 picture buffer to start of*/ | |
| /* cropped picture buffer */ | |
| u2_crop_offset_y = (u2_frm_wd_y * u2_top_ofst) + (u2_lft_ofst); | |
| u2_crop_offset_uv = (u2_frm_wd_uv * (u2_top_ofst >> 1)) | |
| + (u2_lft_ofst >> 1) * YUV420SP_FACTOR; | |
| /* Calculate the display picture width and height based on crop */ | |
| /* information */ | |
| i4_cropped_ht = (WORD32)u2_pic_ht - (WORD32)(u2_btm_ofst + u2_top_ofst); | |
| i4_cropped_wd = (WORD32)u2_pic_wd - (WORD32)(u2_rgt_ofst + u2_lft_ofst); | |
| if((i4_cropped_ht < MB_SIZE) || (i4_cropped_wd < MB_SIZE)) | |
| { | |
| return ERROR_INV_SPS_PPS_T; | |
| } | |
| if((ps_dec->i4_header_decoded & 1) && (ps_dec->u2_pic_wd != u2_pic_wd)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| if((ps_dec->i4_header_decoded & 1) && (ps_dec->u2_disp_width != i4_cropped_wd)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| if((ps_dec->i4_header_decoded & 1) && (ps_dec->u2_pic_ht != u2_pic_ht)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| if((ps_dec->i4_header_decoded & 1) && (ps_dec->u2_disp_height != i4_cropped_ht)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| /* Check again for unsupported resolutions with updated values*/ | |
| if((u2_pic_wd > H264_MAX_FRAME_WIDTH) || (u2_pic_ht > H264_MAX_FRAME_HEIGHT) | |
| || (u2_pic_wd < H264_MIN_FRAME_WIDTH) || (u2_pic_ht < H264_MIN_FRAME_HEIGHT) | |
| || (u2_pic_wd * (UWORD32)u2_pic_ht > H264_MAX_FRAME_SIZE)) | |
| { | |
| return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; | |
| } | |
| /* If MBAff is enabled, decoder support is limited to streams with | |
| * width less than half of H264_MAX_FRAME_WIDTH. | |
| * In case of MBAff decoder processes two rows at a time | |
| */ | |
| if((u2_pic_wd << ps_seq->u1_mb_aff_flag) > H264_MAX_FRAME_WIDTH) | |
| { | |
| return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; | |
| } | |
| } | |
| /* Backup num_reorder_frames if header is already decoded */ | |
| if((ps_dec->i4_header_decoded & 1) && | |
| (1 == ps_seq->u1_vui_parameters_present_flag) && | |
| (1 == ps_seq->s_vui.u1_bitstream_restriction_flag)) | |
| { | |
| num_reorder_frames = (WORD32)ps_seq->s_vui.u4_num_reorder_frames; | |
| } | |
| else | |
| { | |
| num_reorder_frames = -1; | |
| } | |
| if(1 == ps_seq->u1_vui_parameters_present_flag) | |
| { | |
| ret = ih264d_parse_vui_parametres(&ps_seq->s_vui, ps_bitstrm); | |
| if(ret != OK) | |
| return ret; | |
| if (ps_dec->pu1_bits_buf_dynamic != NULL && ps_dec->ps_cur_sps != NULL) { | |
| vui_t *ps_vui = &ps_seq->s_vui; | |
| dec_seq_params_t *ps_sps_old = ps_dec->ps_cur_sps; | |
| vui_t *ps_vui_old = &ps_sps_old->s_vui; | |
| if (ps_vui->u1_video_full_range_flag != ps_vui_old->u1_video_full_range_flag || | |
| ps_vui->u1_colour_primaries != ps_vui_old->u1_colour_primaries || | |
| ps_vui->u1_tfr_chars != ps_vui_old->u1_tfr_chars || | |
| ps_vui->u1_matrix_coeffs != ps_vui_old->u1_matrix_coeffs) { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| } | |
| } | |
| /* Compare older num_reorder_frames with the new one if header is already decoded */ | |
| if((ps_dec->i4_header_decoded & 1) && | |
| (-1 != num_reorder_frames) && | |
| (1 == ps_seq->u1_vui_parameters_present_flag) && | |
| (1 == ps_seq->s_vui.u1_bitstream_restriction_flag) && | |
| ((WORD32)ps_seq->s_vui.u4_num_reorder_frames != num_reorder_frames)) | |
| { | |
| ps_dec->u1_res_changed = 1; | |
| return IVD_RES_CHANGED; | |
| } | |
| /* In case bitstream read has exceeded the filled size, then | |
| return an error */ | |
| if (EXCEED_OFFSET(ps_bitstrm)) | |
| { | |
| return ERROR_INV_SPS_PPS_T; | |
| } | |
| /*--------------------------------------------------------------------*/ | |
| /* All initializations to ps_dec are beyond this point */ | |
| /*--------------------------------------------------------------------*/ | |
| { | |
| WORD32 reorder_depth = ih264d_get_dpb_size(ps_seq); | |
| if((1 == ps_seq->u1_vui_parameters_present_flag) && | |
| (1 == ps_seq->s_vui.u1_bitstream_restriction_flag)) | |
| { | |
| reorder_depth = ps_seq->s_vui.u4_num_reorder_frames + 1; | |
| } | |
| if (reorder_depth > H264_MAX_REF_PICS) | |
| { | |
| return ERROR_INV_SPS_PPS_T; | |
| } | |
| if(ps_seq->u1_frame_mbs_only_flag != 1) | |
| reorder_depth *= 2; | |
| ps_dec->i4_reorder_depth = reorder_depth + DISPLAY_LATENCY; | |
| } | |
| ps_dec->u2_disp_height = i4_cropped_ht; | |
| ps_dec->u2_disp_width = i4_cropped_wd; | |
| ps_dec->u2_pic_wd = u2_pic_wd; | |
| ps_dec->u2_pic_ht = u2_pic_ht; | |
| ps_dec->u4_total_mbs = ps_seq->u4_total_num_of_mbs << (1 - ps_seq->u1_frame_mbs_only_flag); | |
| /* Determining the Width and Height of Frame from that of Picture */ | |
| ps_dec->u2_frm_wd_y = u2_frm_wd_y; | |
| ps_dec->u2_frm_ht_y = u2_frm_ht_y; | |
| ps_dec->u2_frm_wd_uv = u2_frm_wd_uv; | |
| ps_dec->u2_frm_ht_uv = u2_frm_ht_uv; | |
| ps_dec->s_pad_mgr.u1_pad_len_y_v = (UWORD8)(PAD_LEN_Y_V << (1 - u1_frm)); | |
| ps_dec->s_pad_mgr.u1_pad_len_cr_v = (UWORD8)(PAD_LEN_UV_V << (1 - u1_frm)); | |
| ps_dec->u2_frm_wd_in_mbs = ps_seq->u2_frm_wd_in_mbs; | |
| ps_dec->u2_frm_ht_in_mbs = ps_seq->u2_frm_ht_in_mbs; | |
| ps_dec->u2_crop_offset_y = u2_crop_offset_y; | |
| ps_dec->u2_crop_offset_uv = u2_crop_offset_uv; | |
| ps_seq->u1_is_valid = TRUE; | |
| ps_dec->ps_sps[u1_seq_parameter_set_id] = *ps_seq; | |
| ps_dec->ps_cur_sps = &ps_dec->ps_sps[u1_seq_parameter_set_id]; | |
| return OK; | |
| } | |
| /*! | |
| ************************************************************************** | |
| * \if Function name : ih264d_parse_end_of_sequence \endif | |
| * | |
| * \brief | |
| * Decodes End of Sequence. | |
| * | |
| * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit | |
| * | |
| * \return | |
| * 0 on Success and error code otherwise | |
| ************************************************************************** | |
| */ | |
| WORD32 ih264d_parse_end_of_sequence(dec_struct_t * ps_dec) | |
| { | |
| WORD32 ret; | |
| ret = ih264d_end_of_pic_processing(ps_dec); | |
| return ret; | |
| } | |
| /*! | |
| ************************************************************************** | |
| * \if Function name : AcessUnitDelimiterRbsp \endif | |
| * | |
| * \brief | |
| * Decodes AcessUnitDelimiterRbsp. | |
| * | |
| * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit | |
| * | |
| * \return | |
| * 0 on Success and error code otherwise | |
| ************************************************************************** | |
| */ | |
| WORD32 ih264d_access_unit_delimiter_rbsp(dec_struct_t * ps_dec) | |
| { | |
| UWORD8 u1_primary_pic_type; | |
| u1_primary_pic_type = ih264d_get_bits_h264(ps_dec->ps_bitstrm, 3); | |
| switch(u1_primary_pic_type) | |
| { | |
| case I_PIC: | |
| case SI_PIC: | |
| case ISI_PIC: | |
| ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_I; | |
| break; | |
| default: | |
| ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_UNKNOWN; | |
| } | |
| return (0); | |
| } | |
| /*! | |
| ************************************************************************** | |
| * \if Function name : ih264d_parse_nal_unit \endif | |
| * | |
| * \brief | |
| * Decodes NAL unit | |
| * | |
| * \return | |
| * 0 on Success and error code otherwise | |
| ************************************************************************** | |
| */ | |
| WORD32 ih264d_parse_nal_unit(iv_obj_t *dec_hdl, | |
| ivd_video_decode_op_t *ps_dec_op, | |
| UWORD8 *pu1_buf, | |
| UWORD32 u4_length) | |
| { | |
| dec_bit_stream_t *ps_bitstrm; | |
| dec_struct_t *ps_dec = (dec_struct_t *)dec_hdl->pv_codec_handle; | |
| ivd_video_decode_ip_t *ps_dec_in = | |
| (ivd_video_decode_ip_t *)ps_dec->pv_dec_in; | |
| dec_slice_params_t * ps_cur_slice = ps_dec->ps_cur_slice; | |
| UWORD8 u1_first_byte, u1_nal_ref_idc; | |
| UWORD8 u1_nal_unit_type; | |
| WORD32 i_status = OK; | |
| ps_bitstrm = ps_dec->ps_bitstrm; | |
| if(pu1_buf) | |
| { | |
| if(u4_length) | |
| { | |
| ps_dec_op->u4_frame_decoded_flag = 0; | |
| ih264d_process_nal_unit(ps_dec->ps_bitstrm, pu1_buf, | |
| u4_length); | |
| SWITCHOFFTRACE; | |
| u1_first_byte = ih264d_get_bits_h264(ps_bitstrm, 8); | |
| if(NAL_FORBIDDEN_BIT(u1_first_byte)) | |
| { | |
| H264_DEC_DEBUG_PRINT("\nForbidden bit set in Nal Unit, Let's try\n"); | |
| } | |
| u1_nal_unit_type = NAL_UNIT_TYPE(u1_first_byte); | |
| // if any other nal unit other than slice nal is encountered in between a | |
| // frame break out of loop without consuming header | |
| if ((ps_dec->u4_slice_start_code_found == 1) | |
| && (ps_dec->u1_pic_decode_done != 1) | |
| && (u1_nal_unit_type > IDR_SLICE_NAL)) | |
| { | |
| return ERROR_INCOMPLETE_FRAME; | |
| } | |
| ps_dec->u1_nal_unit_type = u1_nal_unit_type; | |
| u1_nal_ref_idc = (UWORD8)(NAL_REF_IDC(u1_first_byte)); | |
| //Skip all NALUs if SPS and PPS are not decoded | |
| switch(u1_nal_unit_type) | |
| { | |
| case SLICE_DATA_PARTITION_A_NAL: | |
| case SLICE_DATA_PARTITION_B_NAL: | |
| case SLICE_DATA_PARTITION_C_NAL: | |
| if(!ps_dec->i4_decode_header) | |
| ih264d_parse_slice_partition(ps_dec, ps_bitstrm); | |
| break; | |
| case IDR_SLICE_NAL: | |
| case SLICE_NAL: | |
| /* ! */ | |
| DEBUG_THREADS_PRINTF("Decoding a slice NAL\n"); | |
| if(!ps_dec->i4_decode_header) | |
| { | |
| if(ps_dec->i4_header_decoded == 3) | |
| { | |
| ih264d_get_pre_sei_params(ps_dec, u1_nal_unit_type); | |
| /* ! */ | |
| ps_dec->u4_slice_start_code_found = 1; | |
| ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm); | |
| i_status = ih264d_parse_decode_slice( | |
| (UWORD8)(u1_nal_unit_type | |
| == IDR_SLICE_NAL), | |
| u1_nal_ref_idc, ps_dec); | |
| if(i_status != OK) | |
| { | |
| return i_status; | |
| } | |
| } | |
| else | |
| { | |
| H264_DEC_DEBUG_PRINT( | |
| "\nSlice NAL Supplied but no header has been supplied\n"); | |
| } | |
| } | |
| break; | |
| case SEI_NAL: | |
| if(!ps_dec->i4_decode_header) | |
| { | |
| ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm); | |
| i_status = ih264d_parse_sei_message(ps_dec, ps_bitstrm); | |
| if(i_status != OK) | |
| return i_status; | |
| ih264d_parse_sei(ps_dec, ps_bitstrm); | |
| } | |
| break; | |
| case SEQ_PARAM_NAL: | |
| /* ! */ | |
| ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm); | |
| i_status = ih264d_parse_sps(ps_dec, ps_bitstrm); | |
| ps_dec->u4_sps_cnt_in_process++; | |
| /*If a resolution change happens within a process call, due to multiple sps | |
| * we will not support it. | |
| */ | |
| if((ps_dec->u4_sps_cnt_in_process > 1 ) && | |
| (i_status == IVD_RES_CHANGED)) | |
| { | |
| i_status = ERROR_INV_SPS_PPS_T; | |
| ps_dec->u1_res_changed = 0; | |
| } | |
| if(i_status == ERROR_INV_SPS_PPS_T) | |
| return i_status; | |
| if(!i_status) | |
| ps_dec->i4_header_decoded |= 0x1; | |
| break; | |
| case PIC_PARAM_NAL: | |
| /* ! */ | |
| ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm); | |
| i_status = ih264d_parse_pps(ps_dec, ps_bitstrm); | |
| if(i_status == ERROR_INV_SPS_PPS_T) | |
| return i_status; | |
| if(!i_status) | |
| ps_dec->i4_header_decoded |= 0x2; | |
| break; | |
| case ACCESS_UNIT_DELIMITER_RBSP: | |
| if(!ps_dec->i4_decode_header) | |
| { | |
| ih264d_access_unit_delimiter_rbsp(ps_dec); | |
| } | |
| break; | |
| //Let us ignore the END_OF_SEQ_RBSP NAL and decode even after this NAL | |
| case END_OF_STREAM_RBSP: | |
| if(!ps_dec->i4_decode_header) | |
| { | |
| ih264d_parse_end_of_stream(ps_dec); | |
| } | |
| break; | |
| case FILLER_DATA_NAL: | |
| if(!ps_dec->i4_decode_header) | |
| { | |
| ih264d_parse_filler_data(ps_dec, ps_bitstrm); | |
| } | |
| break; | |
| default: | |
| H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type); | |
| break; | |
| } | |
| } | |
| } | |
| return i_status; | |
| } |