| |
| /*! |
| ************************************************************************ |
| * \file |
| * parset.c |
| * \brief |
| * Parameter Sets |
| * \author |
| * Main contributors (see contributors.h for copyright, address and affiliation details) |
| * - Stephan Wenger <stewe@cs.tu-berlin.de> |
| * |
| *********************************************************************** |
| */ |
| |
| #include <stdlib.h> |
| #include <assert.h> |
| #include <string.h> |
| |
| #include "global.h" |
| #include "parsetcommon.h" |
| #include "parset.h" |
| #include "nalu.h" |
| #include "memalloc.h" |
| #include "fmo.h" |
| #include "cabac.h" |
| #include "vlc.h" |
| #include "mbuffer.h" |
| #include "erc_api.h" |
| |
| #if TRACE |
| #define SYMTRACESTRING(s) strncpy(sym->tracestring,s,TRACESTRING_SIZE) |
| #else |
| #define SYMTRACESTRING(s) // do nothing |
| #endif |
| |
| const byte ZZ_SCAN[16] = |
| { 0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15 |
| }; |
| |
| const byte ZZ_SCAN8[64] = |
| { 0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, |
| 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28, |
| 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51, |
| 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63 |
| }; |
| |
| extern int UsedBits; // for internal statistics, is adjusted by se_v, ue_v, u_1 |
| extern ColocatedParams *Co_located; |
| |
| extern int quant_intra_default[16]; |
| extern int quant_inter_default[16]; |
| extern int quant8_intra_default[64]; |
| extern int quant8_inter_default[64]; |
| |
| seq_parameter_set_rbsp_t SeqParSet[MAXSPS]; |
| pic_parameter_set_rbsp_t PicParSet[MAXPPS]; |
| |
| extern StorablePicture* dec_picture; |
| |
| extern void init_frext(struct img_par *img); |
| |
| // syntax for scaling list matrix values |
| void Scaling_List(int *scalingList, int sizeOfScalingList, Boolean *UseDefaultScalingMatrix, Bitstream *s) |
| { |
| int j, scanj; |
| int delta_scale, lastScale, nextScale; |
| |
| lastScale = 8; |
| nextScale = 8; |
| |
| for(j=0; j<sizeOfScalingList; j++) |
| { |
| scanj = (sizeOfScalingList==16) ? ZZ_SCAN[j]:ZZ_SCAN8[j]; |
| |
| if(nextScale!=0) |
| { |
| delta_scale = se_v ( " : delta_sl " , s); |
| nextScale = (lastScale + delta_scale + 256) % 256; |
| *UseDefaultScalingMatrix = (Boolean) (scanj==0 && nextScale==0); |
| } |
| |
| scalingList[scanj] = (nextScale==0) ? lastScale:nextScale; |
| lastScale = scalingList[scanj]; |
| } |
| } |
| // fill sps with content of p |
| |
| int InterpretSPS (DataPartition *p, seq_parameter_set_rbsp_t *sps) |
| { |
| unsigned i; |
| int reserved_zero; |
| Bitstream *s = p->bitstream; |
| |
| assert (p != NULL); |
| assert (p->bitstream != NULL); |
| assert (p->bitstream->streamBuffer != 0); |
| assert (sps != NULL); |
| |
| UsedBits = 0; |
| |
| sps->profile_idc = u_v (8, "SPS: profile_idc" , s); |
| |
| if ((sps->profile_idc!=66 ) && |
| (sps->profile_idc!=77 ) && |
| (sps->profile_idc!=88 ) && |
| (sps->profile_idc!=100 ) && |
| (sps->profile_idc!=110 ) && |
| (sps->profile_idc!=122 ) && |
| (sps->profile_idc!=144 )) |
| { |
| return UsedBits; |
| } |
| |
| sps->constrained_set0_flag = u_1 ( "SPS: constrained_set0_flag" , s); |
| sps->constrained_set1_flag = u_1 ( "SPS: constrained_set1_flag" , s); |
| sps->constrained_set2_flag = u_1 ( "SPS: constrained_set2_flag" , s); |
| sps->constrained_set3_flag = u_1 ( "SPS: constrained_set3_flag" , s); |
| reserved_zero = u_v (4, "SPS: reserved_zero_4bits" , s); |
| assert (reserved_zero==0); |
| |
| sps->level_idc = u_v (8, "SPS: level_idc" , s); |
| |
| sps->seq_parameter_set_id = ue_v ("SPS: seq_parameter_set_id" , s); |
| |
| // Fidelity Range Extensions stuff |
| sps->chroma_format_idc = 1; |
| sps->bit_depth_luma_minus8 = 0; |
| sps->bit_depth_chroma_minus8 = 0; |
| img->lossless_qpprime_flag = 0; |
| |
| if((sps->profile_idc==FREXT_HP ) || |
| (sps->profile_idc==FREXT_Hi10P) || |
| (sps->profile_idc==FREXT_Hi422) || |
| (sps->profile_idc==FREXT_Hi444)) |
| { |
| sps->chroma_format_idc = ue_v ("SPS: chroma_format_idc" , s); |
| |
| // Residue Color Transform |
| if(sps->chroma_format_idc == 3) |
| { |
| i = u_1 ("SPS: residue_transform_flag" , s); |
| if (i==1) |
| { |
| error ("[Deprecated High444 Profile] residue_transform_flag = 1 is no longer supported", 1000); |
| } |
| } |
| |
| sps->bit_depth_luma_minus8 = ue_v ("SPS: bit_depth_luma_minus8" , s); |
| sps->bit_depth_chroma_minus8 = ue_v ("SPS: bit_depth_chroma_minus8" , s); |
| img->lossless_qpprime_flag = u_1 ("SPS: lossless_qpprime_y_zero_flag" , s); |
| |
| sps->seq_scaling_matrix_present_flag = u_1 ( "SPS: seq_scaling_matrix_present_flag" , s); |
| |
| if(sps->seq_scaling_matrix_present_flag) |
| { |
| for(i=0; i<8; i++) |
| { |
| sps->seq_scaling_list_present_flag[i] = u_1 ( "SPS: seq_scaling_list_present_flag" , s); |
| if(sps->seq_scaling_list_present_flag[i]) |
| { |
| if(i<6) |
| Scaling_List(sps->ScalingList4x4[i], 16, &sps->UseDefaultScalingMatrix4x4Flag[i], s); |
| else |
| Scaling_List(sps->ScalingList8x8[i-6], 64, &sps->UseDefaultScalingMatrix8x8Flag[i-6], s); |
| } |
| } |
| } |
| } |
| |
| sps->log2_max_frame_num_minus4 = ue_v ("SPS: log2_max_frame_num_minus4" , s); |
| sps->pic_order_cnt_type = ue_v ("SPS: pic_order_cnt_type" , s); |
| |
| if (sps->pic_order_cnt_type == 0) |
| sps->log2_max_pic_order_cnt_lsb_minus4 = ue_v ("SPS: log2_max_pic_order_cnt_lsb_minus4" , s); |
| else if (sps->pic_order_cnt_type == 1) |
| { |
| sps->delta_pic_order_always_zero_flag = u_1 ("SPS: delta_pic_order_always_zero_flag" , s); |
| sps->offset_for_non_ref_pic = se_v ("SPS: offset_for_non_ref_pic" , s); |
| sps->offset_for_top_to_bottom_field = se_v ("SPS: offset_for_top_to_bottom_field" , s); |
| sps->num_ref_frames_in_pic_order_cnt_cycle = ue_v ("SPS: num_ref_frames_in_pic_order_cnt_cycle" , s); |
| for(i=0; i<sps->num_ref_frames_in_pic_order_cnt_cycle; i++) |
| sps->offset_for_ref_frame[i] = se_v ("SPS: offset_for_ref_frame[i]" , s); |
| } |
| sps->num_ref_frames = ue_v ("SPS: num_ref_frames" , s); |
| sps->gaps_in_frame_num_value_allowed_flag = u_1 ("SPS: gaps_in_frame_num_value_allowed_flag" , s); |
| sps->pic_width_in_mbs_minus1 = ue_v ("SPS: pic_width_in_mbs_minus1" , s); |
| sps->pic_height_in_map_units_minus1 = ue_v ("SPS: pic_height_in_map_units_minus1" , s); |
| sps->frame_mbs_only_flag = u_1 ("SPS: frame_mbs_only_flag" , s); |
| if (!sps->frame_mbs_only_flag) |
| { |
| sps->mb_adaptive_frame_field_flag = u_1 ("SPS: mb_adaptive_frame_field_flag" , s); |
| } |
| sps->direct_8x8_inference_flag = u_1 ("SPS: direct_8x8_inference_flag" , s); |
| sps->frame_cropping_flag = u_1 ("SPS: frame_cropping_flag" , s); |
| |
| if (sps->frame_cropping_flag) |
| { |
| sps->frame_cropping_rect_left_offset = ue_v ("SPS: frame_cropping_rect_left_offset" , s); |
| sps->frame_cropping_rect_right_offset = ue_v ("SPS: frame_cropping_rect_right_offset" , s); |
| sps->frame_cropping_rect_top_offset = ue_v ("SPS: frame_cropping_rect_top_offset" , s); |
| sps->frame_cropping_rect_bottom_offset = ue_v ("SPS: frame_cropping_rect_bottom_offset" , s); |
| } |
| sps->vui_parameters_present_flag = (Boolean) u_1 ("SPS: vui_parameters_present_flag" , s); |
| |
| InitVUI(sps); |
| ReadVUI(p, sps); |
| |
| sps->Valid = TRUE; |
| |
| return UsedBits; |
| } |
| |
| |
| void InitVUI(seq_parameter_set_rbsp_t *sps) |
| { |
| sps->vui_seq_parameters.matrix_coefficients = 2; |
| } |
| |
| |
| int ReadVUI(DataPartition *p, seq_parameter_set_rbsp_t *sps) |
| { |
| Bitstream *s = p->bitstream; |
| if (sps->vui_parameters_present_flag) |
| { |
| sps->vui_seq_parameters.aspect_ratio_info_present_flag = u_1 ("VUI: aspect_ratio_info_present_flag" , s); |
| if (sps->vui_seq_parameters.aspect_ratio_info_present_flag) |
| { |
| sps->vui_seq_parameters.aspect_ratio_idc = u_v ( 8, "VUI: aspect_ratio_idc" , s); |
| if (255==sps->vui_seq_parameters.aspect_ratio_idc) |
| { |
| sps->vui_seq_parameters.sar_width = u_v (16, "VUI: sar_width" , s); |
| sps->vui_seq_parameters.sar_height = u_v (16, "VUI: sar_height" , s); |
| } |
| } |
| |
| sps->vui_seq_parameters.overscan_info_present_flag = u_1 ("VUI: overscan_info_present_flag" , s); |
| if (sps->vui_seq_parameters.overscan_info_present_flag) |
| { |
| sps->vui_seq_parameters.overscan_appropriate_flag = u_1 ("VUI: overscan_appropriate_flag" , s); |
| } |
| |
| sps->vui_seq_parameters.video_signal_type_present_flag = u_1 ("VUI: video_signal_type_present_flag" , s); |
| if (sps->vui_seq_parameters.video_signal_type_present_flag) |
| { |
| sps->vui_seq_parameters.video_format = u_v ( 3,"VUI: video_format" , s); |
| sps->vui_seq_parameters.video_full_range_flag = u_1 ( "VUI: video_full_range_flag" , s); |
| sps->vui_seq_parameters.colour_description_present_flag = u_1 ( "VUI: color_description_present_flag" , s); |
| if(sps->vui_seq_parameters.colour_description_present_flag) |
| { |
| sps->vui_seq_parameters.colour_primaries = u_v ( 8,"VUI: colour_primaries" , s); |
| sps->vui_seq_parameters.transfer_characteristics = u_v ( 8,"VUI: transfer_characteristics" , s); |
| sps->vui_seq_parameters.matrix_coefficients = u_v ( 8,"VUI: matrix_coefficients" , s); |
| } |
| } |
| sps->vui_seq_parameters.chroma_location_info_present_flag = u_1 ( "VUI: chroma_loc_info_present_flag" , s); |
| if(sps->vui_seq_parameters.chroma_location_info_present_flag) |
| { |
| sps->vui_seq_parameters.chroma_sample_loc_type_top_field = ue_v ( "VUI: chroma_sample_loc_type_top_field" , s); |
| sps->vui_seq_parameters.chroma_sample_loc_type_bottom_field = ue_v ( "VUI: chroma_sample_loc_type_bottom_field" , s); |
| } |
| sps->vui_seq_parameters.timing_info_present_flag = u_1 ("VUI: timing_info_present_flag" , s); |
| if (sps->vui_seq_parameters.timing_info_present_flag) |
| { |
| sps->vui_seq_parameters.num_units_in_tick = u_v (32,"VUI: num_units_in_tick" , s); |
| sps->vui_seq_parameters.time_scale = u_v (32,"VUI: time_scale" , s); |
| sps->vui_seq_parameters.fixed_frame_rate_flag = u_1 ( "VUI: fixed_frame_rate_flag" , s); |
| } |
| sps->vui_seq_parameters.nal_hrd_parameters_present_flag = u_1 ("VUI: nal_hrd_parameters_present_flag" , s); |
| if (sps->vui_seq_parameters.nal_hrd_parameters_present_flag) |
| { |
| ReadHRDParameters(p, &(sps->vui_seq_parameters.nal_hrd_parameters)); |
| } |
| sps->vui_seq_parameters.vcl_hrd_parameters_present_flag = u_1 ("VUI: vcl_hrd_parameters_present_flag" , s); |
| if (sps->vui_seq_parameters.vcl_hrd_parameters_present_flag) |
| { |
| ReadHRDParameters(p, &(sps->vui_seq_parameters.vcl_hrd_parameters)); |
| } |
| if (sps->vui_seq_parameters.nal_hrd_parameters_present_flag || sps->vui_seq_parameters.vcl_hrd_parameters_present_flag) |
| { |
| sps->vui_seq_parameters.low_delay_hrd_flag = u_1 ("VUI: low_delay_hrd_flag" , s); |
| } |
| sps->vui_seq_parameters.pic_struct_present_flag = u_1 ("VUI: pic_struct_present_flag " , s); |
| sps->vui_seq_parameters.bitstream_restriction_flag = u_1 ("VUI: bitstream_restriction_flag" , s); |
| if (sps->vui_seq_parameters.bitstream_restriction_flag) |
| { |
| sps->vui_seq_parameters.motion_vectors_over_pic_boundaries_flag = u_1 ("VUI: motion_vectors_over_pic_boundaries_flag", s); |
| sps->vui_seq_parameters.max_bytes_per_pic_denom = ue_v ("VUI: max_bytes_per_pic_denom" , s); |
| sps->vui_seq_parameters.max_bits_per_mb_denom = ue_v ("VUI: max_bits_per_mb_denom" , s); |
| sps->vui_seq_parameters.log2_max_mv_length_horizontal = ue_v ("VUI: log2_max_mv_length_horizontal" , s); |
| sps->vui_seq_parameters.log2_max_mv_length_vertical = ue_v ("VUI: log2_max_mv_length_vertical" , s); |
| sps->vui_seq_parameters.num_reorder_frames = ue_v ("VUI: num_reorder_frames" , s); |
| sps->vui_seq_parameters.max_dec_frame_buffering = ue_v ("VUI: max_dec_frame_buffering" , s); |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| int ReadHRDParameters(DataPartition *p, hrd_parameters_t *hrd) |
| { |
| Bitstream *s = p->bitstream; |
| unsigned int SchedSelIdx; |
| |
| hrd->cpb_cnt_minus1 = ue_v ( "VUI: cpb_cnt_minus1" , s); |
| hrd->bit_rate_scale = u_v ( 4,"VUI: bit_rate_scale" , s); |
| hrd->cpb_size_scale = u_v ( 4,"VUI: cpb_size_scale" , s); |
| |
| for( SchedSelIdx = 0; SchedSelIdx <= hrd->cpb_cnt_minus1; SchedSelIdx++ ) |
| { |
| hrd->bit_rate_value_minus1[ SchedSelIdx ] = ue_v ( "VUI: bit_rate_value_minus1" , s); |
| hrd->cpb_size_value_minus1[ SchedSelIdx ] = ue_v ( "VUI: cpb_size_value_minus1" , s); |
| hrd->cbr_flag[ SchedSelIdx ] = u_1 ( "VUI: cbr_flag" , s); |
| } |
| |
| hrd->initial_cpb_removal_delay_length_minus1 = u_v ( 5,"VUI: initial_cpb_removal_delay_length_minus1" , s); |
| hrd->cpb_removal_delay_length_minus1 = u_v ( 5,"VUI: cpb_removal_delay_length_minus1" , s); |
| hrd->dpb_output_delay_length_minus1 = u_v ( 5,"VUI: dpb_output_delay_length_minus1" , s); |
| hrd->time_offset_length = u_v ( 5,"VUI: time_offset_length" , s); |
| |
| return 0; |
| } |
| |
| |
| int InterpretPPS (DataPartition *p, pic_parameter_set_rbsp_t *pps) |
| { |
| unsigned i; |
| int NumberBitsPerSliceGroupId; |
| Bitstream *s = p->bitstream; |
| |
| assert (p != NULL); |
| assert (p->bitstream != NULL); |
| assert (p->bitstream->streamBuffer != 0); |
| assert (pps != NULL); |
| |
| UsedBits = 0; |
| |
| pps->pic_parameter_set_id = ue_v ("PPS: pic_parameter_set_id" , s); |
| pps->seq_parameter_set_id = ue_v ("PPS: seq_parameter_set_id" , s); |
| pps->entropy_coding_mode_flag = u_1 ("PPS: entropy_coding_mode_flag" , s); |
| |
| //! Note: as per JVT-F078 the following bit is unconditional. If F078 is not accepted, then |
| //! one has to fetch the correct SPS to check whether the bit is present (hopefully there is |
| //! no consistency problem :-( |
| //! The current encoder code handles this in the same way. When you change this, don't forget |
| //! the encoder! StW, 12/8/02 |
| pps->pic_order_present_flag = u_1 ("PPS: pic_order_present_flag" , s); |
| |
| pps->num_slice_groups_minus1 = ue_v ("PPS: num_slice_groups_minus1" , s); |
| |
| // FMO stuff begins here |
| if (pps->num_slice_groups_minus1 > 0) |
| { |
| pps->slice_group_map_type = ue_v ("PPS: slice_group_map_type" , s); |
| if (pps->slice_group_map_type == 0) |
| { |
| for (i=0; i<=pps->num_slice_groups_minus1; i++) |
| pps->run_length_minus1 [i] = ue_v ("PPS: run_length_minus1 [i]" , s); |
| } |
| else if (pps->slice_group_map_type == 2) |
| { |
| for (i=0; i<pps->num_slice_groups_minus1; i++) |
| { |
| //! JVT-F078: avoid reference of SPS by using ue(v) instead of u(v) |
| pps->top_left [i] = ue_v ("PPS: top_left [i]" , s); |
| pps->bottom_right [i] = ue_v ("PPS: bottom_right [i]" , s); |
| } |
| } |
| else if (pps->slice_group_map_type == 3 || |
| pps->slice_group_map_type == 4 || |
| pps->slice_group_map_type == 5) |
| { |
| pps->slice_group_change_direction_flag = u_1 ("PPS: slice_group_change_direction_flag" , s); |
| pps->slice_group_change_rate_minus1 = ue_v ("PPS: slice_group_change_rate_minus1" , s); |
| } |
| else if (pps->slice_group_map_type == 6) |
| { |
| if (pps->num_slice_groups_minus1+1 >4) |
| NumberBitsPerSliceGroupId = 3; |
| else if (pps->num_slice_groups_minus1+1 > 2) |
| NumberBitsPerSliceGroupId = 2; |
| else |
| NumberBitsPerSliceGroupId = 1; |
| //! JVT-F078, exlicitly signal number of MBs in the map |
| pps->num_slice_group_map_units_minus1 = ue_v ("PPS: num_slice_group_map_units_minus1" , s); |
| for (i=0; i<=pps->num_slice_group_map_units_minus1; i++) |
| pps->slice_group_id[i] = u_v (NumberBitsPerSliceGroupId, "slice_group_id[i]", s); |
| } |
| } |
| |
| // End of FMO stuff |
| |
| pps->num_ref_idx_l0_active_minus1 = ue_v ("PPS: num_ref_idx_l0_active_minus1" , s); |
| pps->num_ref_idx_l1_active_minus1 = ue_v ("PPS: num_ref_idx_l1_active_minus1" , s); |
| pps->weighted_pred_flag = u_1 ("PPS: weighted_pred_flag" , s); |
| pps->weighted_bipred_idc = u_v ( 2, "PPS: weighted_bipred_idc" , s); |
| pps->pic_init_qp_minus26 = se_v ("PPS: pic_init_qp_minus26" , s); |
| pps->pic_init_qs_minus26 = se_v ("PPS: pic_init_qs_minus26" , s); |
| |
| pps->chroma_qp_index_offset = se_v ("PPS: chroma_qp_index_offset" , s); |
| |
| pps->deblocking_filter_control_present_flag = u_1 ("PPS: deblocking_filter_control_present_flag" , s); |
| pps->constrained_intra_pred_flag = u_1 ("PPS: constrained_intra_pred_flag" , s); |
| pps->redundant_pic_cnt_present_flag = u_1 ("PPS: redundant_pic_cnt_present_flag" , s); |
| |
| if(more_rbsp_data(s->streamBuffer, s->frame_bitoffset,s->bitstream_length)) // more_data_in_rbsp() |
| { |
| //Fidelity Range Extensions Stuff |
| pps->transform_8x8_mode_flag = u_1 ("PPS: transform_8x8_mode_flag" , s); |
| pps->pic_scaling_matrix_present_flag = u_1 ("PPS: pic_scaling_matrix_present_flag" , s); |
| |
| if(pps->pic_scaling_matrix_present_flag) |
| { |
| for(i=0; i<(6+((unsigned)pps->transform_8x8_mode_flag<<1)); i++) |
| { |
| pps->pic_scaling_list_present_flag[i]= u_1 ("PPS: pic_scaling_list_present_flag" , s); |
| |
| if(pps->pic_scaling_list_present_flag[i]) |
| { |
| if(i<6) |
| Scaling_List(pps->ScalingList4x4[i], 16, &pps->UseDefaultScalingMatrix4x4Flag[i], s); |
| else |
| Scaling_List(pps->ScalingList8x8[i-6], 64, &pps->UseDefaultScalingMatrix8x8Flag[i-6], s); |
| } |
| } |
| } |
| pps->second_chroma_qp_index_offset = se_v ("PPS: second_chroma_qp_index_offset" , s); |
| } |
| else |
| { |
| pps->second_chroma_qp_index_offset = pps->chroma_qp_index_offset; |
| } |
| |
| pps->Valid = TRUE; |
| return UsedBits; |
| } |
| |
| |
| void PPSConsistencyCheck (pic_parameter_set_rbsp_t *pps) |
| { |
| printf ("Consistency checking a picture parset, to be implemented\n"); |
| // if (pps->seq_parameter_set_id invalid then do something) |
| } |
| |
| void SPSConsistencyCheck (seq_parameter_set_rbsp_t *sps) |
| { |
| printf ("Consistency checking a sequence parset, to be implemented\n"); |
| } |
| |
| void MakePPSavailable (int id, pic_parameter_set_rbsp_t *pps) |
| { |
| assert (pps->Valid == TRUE); |
| |
| if (PicParSet[id].Valid == TRUE && PicParSet[id].slice_group_id != NULL) |
| free (PicParSet[id].slice_group_id); |
| |
| memcpy (&PicParSet[id], pps, sizeof (pic_parameter_set_rbsp_t)); |
| |
| // we can simply use the memory provided with the pps. the PPS is destroyed after this function |
| // call and will not try to free if pps->slice_group_id == NULL |
| PicParSet[id].slice_group_id = pps->slice_group_id; |
| pps->slice_group_id = NULL; |
| } |
| |
| void CleanUpPPS() |
| { |
| int i; |
| |
| for (i=0; i<MAXPPS; i++) |
| { |
| if (PicParSet[i].Valid == TRUE && PicParSet[i].slice_group_id != NULL) |
| free (PicParSet[i].slice_group_id); |
| |
| PicParSet[i].Valid = FALSE; |
| } |
| } |
| |
| |
| void MakeSPSavailable (int id, seq_parameter_set_rbsp_t *sps) |
| { |
| assert (sps->Valid == TRUE); |
| memcpy (&SeqParSet[id], sps, sizeof (seq_parameter_set_rbsp_t)); |
| } |
| |
| |
| void ProcessSPS (NALU_t *nalu) |
| { |
| DataPartition *dp = AllocPartition(1); |
| seq_parameter_set_rbsp_t *sps = AllocSPS(); |
| int dummy; |
| |
| memcpy (dp->bitstream->streamBuffer, &nalu->buf[1], nalu->len-1); |
| dp->bitstream->code_len = dp->bitstream->bitstream_length = RBSPtoSODB (dp->bitstream->streamBuffer, nalu->len-1); |
| dp->bitstream->ei_flag = 0; |
| dp->bitstream->read_len = dp->bitstream->frame_bitoffset = 0; |
| dummy = InterpretSPS (dp, sps); |
| |
| if (sps->Valid) |
| { |
| if (active_sps) |
| { |
| if (sps->seq_parameter_set_id == active_sps->seq_parameter_set_id) |
| { |
| if (!sps_is_equal(sps, active_sps)) |
| { |
| if (dec_picture) |
| { |
| // this may only happen on slice loss |
| exit_picture(); |
| } |
| active_sps=NULL; |
| } |
| } |
| } |
| // SPSConsistencyCheck (pps); |
| MakeSPSavailable (sps->seq_parameter_set_id, sps); |
| img->profile_idc = sps->profile_idc; //ADD-VG |
| } |
| |
| FreePartition (dp, 1); |
| FreeSPS (sps); |
| } |
| |
| |
| void ProcessPPS (NALU_t *nalu) |
| { |
| DataPartition *dp; |
| pic_parameter_set_rbsp_t *pps; |
| int dummy; |
| |
| dp = AllocPartition(1); |
| pps = AllocPPS(); |
| memcpy (dp->bitstream->streamBuffer, &nalu->buf[1], nalu->len-1); |
| dp->bitstream->code_len = dp->bitstream->bitstream_length = RBSPtoSODB (dp->bitstream->streamBuffer, nalu->len-1); |
| dp->bitstream->ei_flag = 0; |
| dp->bitstream->read_len = dp->bitstream->frame_bitoffset = 0; |
| dummy = InterpretPPS (dp, pps); |
| // PPSConsistencyCheck (pps); |
| if (active_pps) |
| { |
| if (pps->pic_parameter_set_id == active_pps->pic_parameter_set_id) |
| { |
| if (!pps_is_equal(pps, active_pps)) |
| { |
| if (dec_picture) |
| { |
| // this may only happen on slice loss |
| exit_picture(); |
| } |
| active_pps = NULL; |
| } |
| } |
| } |
| MakePPSavailable (pps->pic_parameter_set_id, pps); |
| FreePartition (dp, 1); |
| FreePPS (pps); |
| } |
| |
| void activate_sps (seq_parameter_set_rbsp_t *sps) |
| { |
| if (active_sps != sps) |
| { |
| if (dec_picture) |
| { |
| // this may only happen on slice loss |
| exit_picture(); |
| } |
| active_sps = sps; |
| |
| img->bitdepth_chroma = 0; |
| img->width_cr = 0; |
| img->height_cr = 0; |
| |
| // Fidelity Range Extensions stuff (part 1) |
| img->bitdepth_luma = sps->bit_depth_luma_minus8 + 8; |
| if (sps->chroma_format_idc != YUV400) |
| img->bitdepth_chroma = sps->bit_depth_chroma_minus8 + 8; |
| |
| img->MaxFrameNum = 1<<(sps->log2_max_frame_num_minus4+4); |
| img->PicWidthInMbs = (sps->pic_width_in_mbs_minus1 +1); |
| img->PicHeightInMapUnits = (sps->pic_height_in_map_units_minus1 +1); |
| img->FrameHeightInMbs = ( 2 - sps->frame_mbs_only_flag ) * img->PicHeightInMapUnits; |
| img->FrameSizeInMbs = img->PicWidthInMbs * img->FrameHeightInMbs; |
| |
| img->yuv_format=sps->chroma_format_idc; |
| |
| img->width = img->PicWidthInMbs * MB_BLOCK_SIZE; |
| img->height = img->FrameHeightInMbs * MB_BLOCK_SIZE; |
| |
| if (sps->chroma_format_idc == YUV420) |
| { |
| img->width_cr = img->width >>1; |
| img->height_cr = img->height >>1; |
| } |
| else if (sps->chroma_format_idc == YUV422) |
| { |
| img->width_cr = img->width >>1; |
| img->height_cr = img->height; |
| } |
| else if (sps->chroma_format_idc == YUV444) |
| { |
| //YUV444 |
| img->width_cr = img->width; |
| img->height_cr = img->height; |
| } |
| |
| img->width_cr_m1 = img->width_cr - 1; |
| init_frext(img); |
| init_global_buffers(); |
| if (!img->no_output_of_prior_pics_flag) |
| { |
| flush_dpb(); |
| } |
| init_dpb(); |
| |
| if (NULL!=Co_located) |
| { |
| free_colocated(Co_located); |
| } |
| Co_located = alloc_colocated (img->width, img->height,sps->mb_adaptive_frame_field_flag); |
| ercInit(img->width, img->height, 1); |
| } |
| } |
| |
| void activate_pps(pic_parameter_set_rbsp_t *pps) |
| { |
| if (active_pps != pps) |
| { |
| if (dec_picture) |
| { |
| // this may only happen on slice loss |
| exit_picture(); |
| } |
| |
| active_pps = pps; |
| |
| // Fidelity Range Extensions stuff (part 2) |
| img->Transform8x8Mode = pps->transform_8x8_mode_flag; |
| |
| } |
| } |
| |
| void UseParameterSet (int PicParsetId) |
| { |
| seq_parameter_set_rbsp_t *sps = &SeqParSet[PicParSet[PicParsetId].seq_parameter_set_id]; |
| pic_parameter_set_rbsp_t *pps = &PicParSet[PicParsetId]; |
| int i; |
| |
| |
| if (PicParSet[PicParsetId].Valid != TRUE) |
| printf ("Trying to use an invalid (uninitialized) Picture Parameter Set with ID %d, expect the unexpected...\n", PicParsetId); |
| if (SeqParSet[PicParSet[PicParsetId].seq_parameter_set_id].Valid != TRUE) |
| printf ("PicParset %d references an invalid (uninitialized) Sequence Parameter Set with ID %d, expect the unexpected...\n", PicParsetId, PicParSet[PicParsetId].seq_parameter_set_id); |
| |
| sps = &SeqParSet[PicParSet[PicParsetId].seq_parameter_set_id]; |
| |
| |
| // In theory, and with a well-designed software, the lines above |
| // are everything necessary. In practice, we need to patch many values |
| // in img-> (but no more in inp-> -- these have been taken care of) |
| |
| // Sequence Parameter Set Stuff first |
| |
| // printf ("Using Picture Parameter set %d and associated Sequence Parameter Set %d\n", PicParsetId, PicParSet[PicParsetId].seq_parameter_set_id); |
| |
| if ((int) sps->pic_order_cnt_type < 0 || sps->pic_order_cnt_type > 2) // != 1 |
| { |
| printf ("invalid sps->pic_order_cnt_type = %d\n", sps->pic_order_cnt_type); |
| error ("pic_order_cnt_type != 1", -1000); |
| } |
| |
| if (sps->pic_order_cnt_type == 1) |
| { |
| if(sps->num_ref_frames_in_pic_order_cnt_cycle >= MAXnum_ref_frames_in_pic_order_cnt_cycle) |
| { |
| error("num_ref_frames_in_pic_order_cnt_cycle too large",-1011); |
| } |
| } |
| |
| activate_sps(sps); |
| activate_pps(pps); |
| |
| |
| // currSlice->dp_mode is set by read_new_slice (NALU first byte available there) |
| if (pps->entropy_coding_mode_flag == UVLC) |
| { |
| nal_startcode_follows = uvlc_startcode_follows; |
| for (i=0; i<3; i++) |
| { |
| img->currentSlice->partArr[i].readSyntaxElement = readSyntaxElement_UVLC; |
| } |
| } |
| else |
| { |
| nal_startcode_follows = cabac_startcode_follows; |
| for (i=0; i<3; i++) |
| { |
| img->currentSlice->partArr[i].readSyntaxElement = readSyntaxElement_CABAC; |
| } |
| } |
| } |
| |
