/****************************************************************************** * * Copyright (C) 2022 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 * isvcd_parse_headers.c * * @brief * Contains High level syntax[above slice] parsing routines * * @author * Kishore * * @par List of Functions: * - isvcd_set_default_seq_svc_ext() * - isvcd_parse_subset_sps() * - isvcd_dec_ref_base_pic_marking() * - isvcd_parse_nal_unit() * - isvcd_parse_sps() * - isvcd_parse_pps() * * @remarks * None * ******************************************************************************* */ #include #include #include "ih264_typedefs.h" #include "ih264_defs.h" #include "ih264_macros.h" #include "ih264_platform_macros.h" #include "ih264d_bitstrm.h" #include "isvcd_structs.h" #include "ih264d_parse_cavlc.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 "ih264_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_parse_islice.h" #include "isvcd_parse_slice.h" #include "ih264d_process_bslice.h" #include "ih264d_process_pslice.h" #include "isvcd_vui.h" WORD32 ih264d_access_unit_delimiter_rbsp(dec_struct_t *ps_dec); void ih264d_get_pre_sei_params(dec_struct_t *ps_dec, UWORD8 u1_nal_unit_type); UWORD32 ih264d_correct_level_idc(UWORD32 u4_level_idc, UWORD32 u4_total_mbs); WORD32 ih264d_parse_filler_data(dec_struct_t *ps_dec, dec_bit_stream_t *ps_bitstrm); void ih264d_parse_end_of_stream(dec_struct_t *ps_dec); WORD32 ih264d_parse_slice_partition(dec_struct_t *ps_dec, dec_bit_stream_t *ps_bitstrm); /*! ************************************************************************** * \if Function name : isvcd_set_default_seq_svc_ext \en dif * * \brief * Sets the default values for the svc params in the SVC bitstream * * \return ************************************************************************** */ void isvcd_set_default_seq_svc_ext(dec_subset_seq_params_t *ps_seq_svc_ext) { ps_seq_svc_ext->u1_inter_layer_deblocking_filter_control_present_flag = 0; ps_seq_svc_ext->u1_extended_spatial_scalability_idc = 0; ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag = 1; ps_seq_svc_ext->u1_chroma_phase_y_plus1 = 1; ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_x_plus1_flag = ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag; ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1 = ps_seq_svc_ext->u1_chroma_phase_y_plus1; ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset = 0; ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset = 0; ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset = 0; ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset = 0; ps_seq_svc_ext->u1_seq_tcoeff_level_prediction_flag = ps_seq_svc_ext->u1_adaptive_tcoeff_level_prediction_flag = 0; ps_seq_svc_ext->u1_slice_header_restriction_flag = 0; ps_seq_svc_ext->u1_svc_vui_parameters_present_flag = 0; } /*! ************************************************************************** * \if Function name : isvcd_parse_subset_sps \en dif * * \brief * Decodes Sequence parameter set from the SVC bitstream * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_subset_sps(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_bit_stream_t *ps_bitstrm) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; UWORD8 i; dec_seq_params_t *ps_seq = NULL; dec_svc_seq_params_t *ps_subset_seq = NULL; dec_subset_seq_params_t *ps_seq_svc_ext; UWORD8 u1_profile_idc, u1_level_idc, u1_seq_parameter_set_id, u1_mb_aff_flag = 0; UWORD16 i2_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, uc_constraint_set2_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; /* High profile related syntax element */ WORD32 i4_i; /* G050 */ UWORD8 u1_frame_cropping_flag, u1_frame_cropping_rect_left_ofst = 0, u1_frame_cropping_rect_right_ofst = 0, u1_frame_cropping_rect_top_ofst = 0, u1_frame_cropping_rect_bottom_ofst = 0; /* 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); uc_constraint_set2_flag = ih264d_get_bit_h264(ps_bitstrm); UNUSED(uc_constraint_set1_flag); UNUSED(uc_constraint_set2_flag); /*****************************************************/ /* 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 */ u1_level_idc = (UWORD8) 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); if(u1_seq_parameter_set_id >= MAX_NUM_SEQ_PARAMS) return ERROR_INV_SPS_PPS_T; /*--------------------------------------------------------------------*/ /* Find an seq param entry in seqparam array of decStruct */ /*--------------------------------------------------------------------*/ ps_subset_seq = ps_svc_lyr_dec->pv_scratch_subset_sps; memset(ps_subset_seq, 0, sizeof(dec_svc_seq_params_t)); ps_seq = ps_dec->pv_scratch_sps_pps; memset(ps_seq, 0, sizeof(dec_seq_params_t)); 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; /* subset_seq_sps_will be stored from location 32 : MAX_NUM_SEQ_PARAMS*/ u1_seq_parameter_set_id += MAX_NUM_SEQ_PARAMS; ps_subset_seq->ps_seq = &ps_dec->ps_sps[u1_seq_parameter_set_id]; if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_profile_idc != u1_profile_idc)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_level_idc != u1_level_idc)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } /*******************************************************************/ /* 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 || u1_profile_idc == SCALABLE_BASELINE_PROFILE_IDC || u1_profile_idc == SCALABLE_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 = (UWORD8) u8_temp; COPYTHECONTEXT("SPS: log2_max_frame_num_minus4", (ps_seq->u1_bits_in_frm_num - 4)); i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num)); ps_seq->u2_u4_max_pic_num_minus1 = i2_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 = (UWORD8) 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) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].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); /* SVC_DEC_REVIEW */ ps_seq->u1_gaps_in_frame_num_value_allowed_flag = 0; /*--------------------------------------------------------------------*/ /* 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 = (UWORD32) 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 = (UWORD32) 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); if(ps_svc_lyr_dec->pic_width < u2_pic_wd) { ps_svc_lyr_dec->pic_width = u2_pic_wd; } if(ps_svc_lyr_dec->pic_height < u2_pic_ht) { ps_svc_lyr_dec->pic_height = u2_pic_ht; } /*--------------------------------------------------------------------*/ /* Get the value of MaxMbAddress and Number of bits needed for it */ /*--------------------------------------------------------------------*/ ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs * ps_seq->u2_frm_ht_in_mbs) - 1; ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1; ps_seq->u1_level_idc = ih264d_correct_level_idc(u1_level_idc, ps_seq->u2_total_num_of_mbs); u1_frm = ih264d_get_bit_h264(ps_bitstrm); if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].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) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].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) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_pic_wd != u2_pic_wd)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_disp_width != i4_cropped_wd)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_pic_ht != u2_pic_ht)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].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 > SVCD_MAX_FRAME_WIDTH) || (u2_pic_ht > SVCD_MAX_FRAME_HEIGHT) || (u2_pic_wd < SVCD_MIN_FRAME_WIDTH) || (u2_pic_ht < SVCD_MIN_FRAME_HEIGHT) || (u2_pic_wd * (UWORD32) u2_pic_ht > SVCD_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; } } 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; } ps_seq_svc_ext = &ps_subset_seq->s_sps_svc_ext; isvcd_set_default_seq_svc_ext(ps_seq_svc_ext); if(SCALABLE_BASELINE_PROFILE_IDC == ps_seq->u1_profile_idc || SCALABLE_HIGH_PROFILE_IDC == ps_seq->u1_profile_idc) { SWITCHONTRACE; ps_seq_svc_ext->u1_inter_layer_deblocking_filter_control_present_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SPS_EXt: u1_inter_layer_deblocking_filter_control_present_flag", ps_seq_svc_ext->u1_inter_layer_deblocking_filter_control_present_flag); ps_seq_svc_ext->u1_extended_spatial_scalability_idc = ih264d_get_bits_h264(ps_bitstrm, 2); COPYTHECONTEXT("SPS_EXt: u1_extended_spatial_scalability_idc", ps_seq_svc_ext->u1_extended_spatial_scalability_idc); /* u1_extended_spatial_scalability_idc value 0, 1 and 2 are supported */ if(ps_seq_svc_ext->u1_extended_spatial_scalability_idc > 2) { return ERROR_SVC_INV_SUBSET_SPS; } /* ChromaArrayType = i4_chroma_format_idc if separate_colour_plane_flag = * 0 for all chroma format except 4:4:4 */ if(1 == ps_seq->i4_chroma_format_idc || 2 == ps_seq->i4_chroma_format_idc) { ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SPS_EXt: u1_chroma_phase_x_plus1_flag", ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag); } if(1 == ps_seq->i4_chroma_format_idc) { ps_seq_svc_ext->u1_chroma_phase_y_plus1 = ih264d_get_bits_h264(ps_bitstrm, 2); COPYTHECONTEXT("SPS_EXt: u1_chroma_phase_y_plus1", ps_seq_svc_ext->u1_chroma_phase_y_plus1); if(ps_seq_svc_ext->u1_chroma_phase_y_plus1 >= 3) { return ERROR_SVC_INV_SUBSET_SPS; } } /* inferred values not covered in isvcd_set_default_seq_svc_ext*/ ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_x_plus1_flag = ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag; ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1 = ps_seq_svc_ext->u1_chroma_phase_y_plus1; if(1 == ps_seq_svc_ext->u1_extended_spatial_scalability_idc) { if(ps_seq->i4_chroma_format_idc > 0) { ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_x_plus1_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SPS_EXt: u1_seq_ref_layer_chroma_phase_x_plus1_flag", ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_x_plus1_flag); ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1 = ih264d_get_bits_h264(ps_bitstrm, 2); COPYTHECONTEXT("SPS_EXt: u1_seq_ref_layer_chroma_phase_y_plus1", ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1); if(ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1 >= 3) { return ERROR_SVC_INV_SUBSET_SPS; } } ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT("SPS_EXt: i4_seq_scaled_ref_layer_left_offset", ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset); if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset != 0) { return ERROR_SVC_INV_SUBSET_SPS; } if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset >= MAX_SCLD_REF_LAYER_OFFSET || ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset < MIN_SCLD_REF_LAYER_OFFSET) { return ERROR_SVC_INV_SUBSET_SPS; } ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT("SPS_EXt: i4_seq_scaled_ref_layer_top_offset", ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset); if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset != 0) { return ERROR_SVC_INV_SUBSET_SPS; } if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset >= MAX_SCLD_REF_LAYER_OFFSET || ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset < MIN_SCLD_REF_LAYER_OFFSET) { return ERROR_SVC_INV_SUBSET_SPS; } ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT("SPS_EXt: i4_seq_scaled_ref_layer_right_offset", ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset); if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset >= MAX_SCLD_REF_LAYER_OFFSET || ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset < MIN_SCLD_REF_LAYER_OFFSET) { return ERROR_SVC_INV_SUBSET_SPS; } ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT("SPS_EXt: i4_seq_scaled_ref_layer_bottom_offset", ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset); if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset >= MAX_SCLD_REF_LAYER_OFFSET || ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset < MIN_SCLD_REF_LAYER_OFFSET) { return ERROR_INV_SLICE_HDR_T; } } ps_seq_svc_ext->u1_seq_tcoeff_level_prediction_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SPS_EXt: u1_seq_tcoeff_level_prediction_flag", ps_seq_svc_ext->u1_seq_tcoeff_level_prediction_flag); if(1 == ps_seq_svc_ext->u1_seq_tcoeff_level_prediction_flag) { ps_seq_svc_ext->u1_adaptive_tcoeff_level_prediction_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SPS_EXt: u1_adaptive_tcoeff_level_prediction_flag", ps_seq_svc_ext->u1_adaptive_tcoeff_level_prediction_flag); } ps_seq_svc_ext->u1_slice_header_restriction_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SPS_EXt: u1_slice_header_restriction_flag", ps_seq_svc_ext->u1_slice_header_restriction_flag); ps_seq_svc_ext->u1_svc_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SPS_EXt: u1_svc_vui_parameters_present_flag", ps_seq_svc_ext->u1_svc_vui_parameters_present_flag); if(1 == ps_seq_svc_ext->u1_svc_vui_parameters_present_flag) { if(NULL == ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].s_sps_svc_ext.ps_svc_vui_ext) { void *pv_buf; UWORD32 size; /* Memory allocation only if VUI is enabled in a particular subset SPS*/ size = sizeof(svc_vui_ext_t); pv_buf = ps_dec->pf_aligned_alloc(ps_dec->pv_mem_ctxt, 128, size); RETURN_IF((NULL == pv_buf), IV_FAIL); memset(pv_buf, 0, size); ps_seq_svc_ext->ps_svc_vui_ext = pv_buf; ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id] .s_sps_svc_ext.ps_svc_vui_ext = pv_buf; } else { ps_seq_svc_ext->ps_svc_vui_ext = ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id] .s_sps_svc_ext.ps_svc_vui_ext; } ret = isvcd_parse_vui_ext_parametres(ps_seq_svc_ext->ps_svc_vui_ext, ps_bitstrm); if(ret != OK) return ret; } } /* Add conditions for SCALABLE BASELINE PROFILE */ if(SCALABLE_BASELINE_PROFILE_IDC == ps_seq->u1_profile_idc || ((SCALABLE_HIGH_PROFILE_IDC == ps_seq->u1_profile_idc) && (1 == uc_constraint_set0_flag))) { if(ps_seq->i4_chroma_format_idc != 1) { return ERROR_FEATURE_UNAVAIL; } if(ps_seq->i4_bit_depth_luma_minus8 != 0) { return ERROR_FEATURE_UNAVAIL; } if(ps_seq->i4_bit_depth_chroma_minus8 != 0) { return ERROR_FEATURE_UNAVAIL; } if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0) { return ERROR_FEATURE_UNAVAIL; } if(ps_seq->u1_frame_mbs_only_flag != 1) { return ERROR_FEATURE_UNAVAIL; } if((0 != ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset % 16) && (0 != ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset % 16)) { return ERROR_FEATURE_UNAVAIL; } } /* Compare older num_reorder_frames with the new one if header is already * decoded */ if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_vui_parameters_present_flag) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].s_vui.u1_bitstream_restriction_flag)) { 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_subset_seq->i4_reorder_depth = reorder_depth + DISPLAY_LATENCY; } ps_subset_seq->u2_disp_height = i4_cropped_ht; ps_subset_seq->u2_disp_width = i4_cropped_wd; ps_subset_seq->u2_pic_wd = u2_pic_wd; ps_subset_seq->u2_pic_ht = u2_pic_ht; /* Assuming 8k is the maximum resolution svc dec supports*/ if(u2_frm_wd_y > H264_MAX_FRAME_WIDTH) return (NOT_OK); if(u2_frm_ht_y > H264_MAX_FRAME_HEIGHT) return (NOT_OK); if(u2_frm_wd_uv > H264_MAX_FRAME_WIDTH) return (NOT_OK); if(u2_frm_ht_uv > H264_MAX_FRAME_HEIGHT) return (NOT_OK); /* Determining the Width and Height of Frame from that of Picture */ ps_subset_seq->u2_frm_wd_y = u2_frm_wd_y; ps_subset_seq->u2_frm_ht_y = u2_frm_ht_y; ps_subset_seq->u2_frm_wd_uv = u2_frm_wd_uv; ps_subset_seq->u2_frm_ht_uv = u2_frm_ht_uv; ps_subset_seq->u1_pad_len_y_v = (UWORD8) (PAD_LEN_Y_V << (1 - u1_frm)); ps_subset_seq->u1_pad_len_cr_v = (UWORD8) (PAD_LEN_UV_V << (1 - u1_frm)); ps_subset_seq->u2_crop_offset_y = u2_crop_offset_y; ps_subset_seq->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; if(NULL != ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].s_sps_svc_ext.ps_svc_vui_ext) { ps_seq_svc_ext->ps_svc_vui_ext = ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].s_sps_svc_ext.ps_svc_vui_ext; } ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id] = *ps_subset_seq; ps_svc_lyr_dec->ps_cur_subset_sps = &ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id]; return OK; } /*! ************************************************************************** * \if Function name : isvcd_dec_ref_base_pic_marking \endif * * \brief * Decodes reference base pic marking params * * \return * 0 on Success and error code otherwise ************************************************************************** */ WORD32 isvcd_dec_ref_base_pic_marking( dec_ref_base_pic_marking_params_t *ps_ref_base_pic_marking_svc_ext, dec_bit_stream_t *ps_bitstrm) { UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; SWITCHONTRACE; ps_ref_base_pic_marking_svc_ext->u1_adaptive_ref_base_pic_marking_mode_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT( "Dec ref base pic marking params : " "u1_adaptive_ref_base_pic_marking_mode_flag", ps_ref_base_pic_marking_svc_ext->u1_adaptive_ref_base_pic_marking_mode_flag); if(1 == ps_ref_base_pic_marking_svc_ext->u1_adaptive_ref_base_pic_marking_mode_flag) { do { ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT( "Dec ref base pic marking params : " "u4_memory_management_base_control_operation", ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation); if(1 == ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation) { ps_ref_base_pic_marking_svc_ext->u4_difference_of_base_pic_nums_minus1 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT( "Dec ref base pic marking params : " "u4_difference_of_base_pic_nums_minus1", ps_ref_base_pic_marking_svc_ext->u4_difference_of_base_pic_nums_minus1); } if(2 == ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation) { ps_ref_base_pic_marking_svc_ext->u4_long_term_base_pic_num = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT("Dec ref base pic marking params : u4_long_term_base_pic_num", ps_ref_base_pic_marking_svc_ext->u4_long_term_base_pic_num); } } while(0 != ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation); } SWITCHOFFTRACE; return OK; } /*! ************************************************************************** * \if Function name : isvcd_parse_nal_unit \endif * * \brief * Decodes NAL unit * * \return * 0 on Success and error code otherwise ************************************************************************** */ WORD32 isvcd_parse_nal_unit(svc_dec_lyr_struct_t *dec_svc_hdl, UWORD8 u1_nal_ref_idc) { dec_bit_stream_t *ps_bitstrm; dec_struct_t *ps_dec; svc_dec_lyr_struct_t *ps_svc_lyr_dec; UWORD8 u1_nal_unit_type; WORD32 i_status = OK; ps_svc_lyr_dec = (svc_dec_lyr_struct_t *) dec_svc_hdl; ps_dec = &ps_svc_lyr_dec->s_dec; { SWITCHOFFTRACE; u1_nal_unit_type = ps_dec->u1_nal_unit_type; ps_bitstrm = ps_dec->ps_bitstrm; // 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: if(ps_svc_lyr_dec->u1_base_res_flag != 1) { return NOT_OK; } if(!ps_dec->i4_decode_header) { if(ps_dec->i4_header_decoded == 3) { /* ! */ DEBUG_THREADS_PRINTF("Decoding a slice NAL\n"); { ih264d_get_pre_sei_params(ps_dec, u1_nal_unit_type); /* ! */ ps_dec->u4_slice_start_code_found = 1; i_status = isvcd_parse_decode_slice( (UWORD8) (u1_nal_unit_type == IDR_SLICE_NAL), u1_nal_ref_idc, ps_svc_lyr_dec); if(i_status != OK) { return i_status; } } } } break; case SEI_NAL: case PREFIX_UNIT_NAL: case SEQ_PARAM_NAL: case PIC_PARAM_NAL: case SUBSET_SPS_NAL: H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type); break; case ACCESS_UNIT_DELIMITER_RBSP: if(!ps_dec->i4_decode_header) { ih264d_access_unit_delimiter_rbsp(ps_dec); } break; // 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; case CODED_SLICE_EXTENSION_NAL: if(ps_svc_lyr_dec->u1_base_res_flag == 1) { return NOT_OK; } if(!ps_dec->i4_decode_header) { if(ps_dec->i4_header_decoded == 3) { /* ! */ DEBUG_THREADS_PRINTF("Decoding an SVC slice NAL\n"); { { ih264d_get_pre_sei_params(ps_dec, u1_nal_unit_type); /* ! */ ps_dec->u4_slice_start_code_found = 1; i_status = isvcd_parse_decode_slice_ext_nal( (UWORD8) (ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag), u1_nal_ref_idc, ps_svc_lyr_dec); if(i_status != OK) { return i_status; } } } } } break; default: H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type); break; } } return i_status; } /*! ************************************************************************** * \if Function name : isvcd_parse_sps \endif * * \brief * Decodes Picture Parameter set * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_sps(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_bit_stream_t *ps_bitstrm) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; UWORD8 i; dec_seq_params_t *ps_seq = NULL; dec_svc_seq_params_t *ps_subset_seq = NULL; UWORD8 u1_profile_idc, u1_level_idc, u1_seq_parameter_set_id, u1_mb_aff_flag = 0; UWORD16 i2_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, uc_constraint_set2_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 = 0, u1_frame_cropping_rect_right_ofst = 0, u1_frame_cropping_rect_top_ofst = 0, u1_frame_cropping_rect_bottom_ofst = 0; /* 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); uc_constraint_set2_flag = ih264d_get_bit_h264(ps_bitstrm); UNUSED(uc_constraint_set2_flag); /*****************************************************/ /* 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_subset_seq = ps_svc_lyr_dec->pv_scratch_subset_sps; memset(ps_subset_seq, 0, sizeof(dec_svc_seq_params_t)); ps_seq = ps_dec->pv_scratch_sps_pps; memset(ps_seq, 0, sizeof(dec_seq_params_t)); if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_profile_idc != u1_profile_idc)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].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; ps_subset_seq->ps_seq = &ps_dec->ps_sps[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 || u1_profile_idc == SCALABLE_BASELINE_PROFILE_IDC || u1_profile_idc == SCALABLE_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 = (UWORD8) u8_temp; COPYTHECONTEXT("SPS: log2_max_frame_num_minus4", (ps_seq->u1_bits_in_frm_num - 4)); i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num)); ps_seq->u2_u4_max_pic_num_minus1 = i2_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 = (UWORD8) 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) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].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); ps_seq->u1_gaps_in_frame_num_value_allowed_flag = 0; /*--------------------------------------------------------------------*/ /* 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 = (UWORD32) 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 = (UWORD32) 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); if(ps_svc_lyr_dec->pic_width < u2_pic_wd) { ps_svc_lyr_dec->pic_width = u2_pic_wd; } if(ps_svc_lyr_dec->pic_height < u2_pic_ht) { ps_svc_lyr_dec->pic_height = u2_pic_ht; } /*--------------------------------------------------------------------*/ /* Get the value of MaxMbAddress and Number of bits needed for it */ /*--------------------------------------------------------------------*/ ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs * ps_seq->u2_frm_ht_in_mbs) - 1; ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1; ps_seq->u1_level_idc = ih264d_correct_level_idc(u1_level_idc, ps_seq->u2_total_num_of_mbs); u1_frm = ih264d_get_bit_h264(ps_bitstrm); if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].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) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_dec->ps_sps[u1_seq_parameter_set_id].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) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_pic_wd != u2_pic_wd)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_disp_width != i4_cropped_wd)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_pic_ht != u2_pic_ht)) { ps_dec->u1_res_changed = 1; return IVD_RES_CHANGED; } if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].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 > SVCD_MAX_FRAME_WIDTH) || (u2_pic_ht > SVCD_MAX_FRAME_HEIGHT) || (u2_pic_wd < SVCD_MIN_FRAME_WIDTH) || (u2_pic_ht < SVCD_MIN_FRAME_HEIGHT) || (u2_pic_wd * (UWORD32) u2_pic_ht > SVCD_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; } /* Compare older num_reorder_frames with the new one if header is already * decoded */ if((ps_dec->i4_header_decoded & 1) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (-1 != num_reorder_frames) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_vui_parameters_present_flag) && (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].s_vui.u1_bitstream_restriction_flag) && ((WORD32) ps_dec->ps_sps[u1_seq_parameter_set_id].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_subset_seq->i4_reorder_depth = reorder_depth + DISPLAY_LATENCY; } ps_subset_seq->u2_disp_height = i4_cropped_ht; ps_subset_seq->u2_disp_width = i4_cropped_wd; ps_subset_seq->u2_pic_wd = u2_pic_wd; ps_subset_seq->u2_pic_ht = u2_pic_ht; /* Determining the Width and Height of Frame from that of Picture */ ps_subset_seq->u2_frm_wd_y = u2_frm_wd_y; ps_subset_seq->u2_frm_ht_y = u2_frm_ht_y; ps_subset_seq->u2_frm_wd_uv = u2_frm_wd_uv; ps_subset_seq->u2_frm_ht_uv = u2_frm_ht_uv; ps_subset_seq->u1_pad_len_y_v = (UWORD8) (PAD_LEN_Y_V << (1 - u1_frm)); ps_subset_seq->u1_pad_len_cr_v = (UWORD8) (PAD_LEN_UV_V << (1 - u1_frm)); ps_subset_seq->u2_crop_offset_y = u2_crop_offset_y; ps_subset_seq->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_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id] = *ps_subset_seq; ps_svc_lyr_dec->ps_cur_subset_sps = &ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id]; return OK; } /*! ************************************************************************** * \if Function name : isvcd_parse_pps \endif * * \brief * Decodes Picture Parameter set * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_pps(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_bit_stream_t *ps_bitstrm) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; 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; /*--------------------------------------------------------------------*/ /* 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 = (UWORD8) 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]; 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 = (UWORD8) 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] = (UWORD8) 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] = (UWORD8) 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 = (UWORD8) 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 = (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 = (UWORD8) 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 = (UWORD8) 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; } if(SCALABLE_BASELINE_PROFILE_IDC == ps_sps->u1_profile_idc) { if(ps_pps->u1_num_slice_groups > 7) { return ERROR_INV_SPS_PPS_T; } } /* 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; }