parset.c
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上传日期:2021-12-09
资源大小:5084k
文件大小:29k
源码类别:
Audio
开发平台:
Visual C++
- /*!
- ************************************************************************
- * 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 "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 ColocatedParams *Co_located_JV[MAX_PLANE]; //!< Co_located to be used during 4:4:4 independent mode decoding
- 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(ImageParameters *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;
- unsigned n_ScalingList;
- 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!=FREXT_HP ) &&
- (sps->profile_idc!=FREXT_Hi10P ) &&
- (sps->profile_idc!=FREXT_Hi422 ) &&
- (sps->profile_idc!=FREXT_Hi444 ) &&
- (sps->profile_idc!=FREXT_CAVLC444 ))
- {
- 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;
- sps->separate_colour_plane_flag = 0;
- if((sps->profile_idc==FREXT_HP ) ||
- (sps->profile_idc==FREXT_Hi10P) ||
- (sps->profile_idc==FREXT_Hi422) ||
- (sps->profile_idc==FREXT_Hi444) ||
- (sps->profile_idc==FREXT_CAVLC444))
- {
- sps->chroma_format_idc = ue_v ("SPS: chroma_format_idc" , s);
- if(sps->chroma_format_idc == YUV444)
- {
- sps->separate_colour_plane_flag = u_1 ("SPS: separate_colour_plane_flag" , s);
- }
- 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)
- {
- n_ScalingList = (sps->chroma_format_idc != YUV444) ? 8 : 12;
- for(i=0; i<n_ScalingList; 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;
- unsigned n_ScalingList;
- int chroma_format_idc;
- 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;
- pps->num_slice_group_map_units_minus1 = ue_v ("PPS: num_slice_group_map_units_minus1" , s);
- if ((pps->slice_group_id = calloc (pps->num_slice_group_map_units_minus1+1, 1)) == NULL)
- no_mem_exit ("InterpretPPS: slice_group_id");
- 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)
- {
- chroma_format_idc = SeqParSet[pps->seq_parameter_set_id].chroma_format_idc;
- n_ScalingList = 6 + ((chroma_format_idc != YUV444) ? 2 : 6) * pps->transform_8x8_mode_flag;
- for(i=0; i<n_ScalingList; 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 implementedn");
- // 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 implementedn");
- }
- 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();
- 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;
- 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
- img->separate_colour_plane_flag = sps->separate_colour_plane_flag;
- if( img->separate_colour_plane_flag )
- {
- img->ChromaArrayType = 0;
- }
- else
- {
- img->ChromaArrayType = sps->chroma_format_idc;
- }
- }
- FreePartition (dp, 1);
- FreeSPS (sps);
- }
- void ProcessPPS (NALU_t *nalu)
- {
- DataPartition *dp;
- pic_parameter_set_rbsp_t *pps;
- 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;
- 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)
- {
- int nplane;
- 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;
- // maximum vertical motion vector range in luma quarter pixel units
- if (active_sps->level_idc <= 10)
- {
- img->max_vmv_r = 64 * 4;
- }
- else if (active_sps->level_idc <= 20)
- {
- img->max_vmv_r = 128 * 4;
- }
- else if (active_sps->level_idc <= 30)
- {
- img->max_vmv_r = 256 * 4;
- }
- else
- {
- img->max_vmv_r = 512 * 4; // 512 pixels in quarter pixels
- }
- // Fidelity Range Extensions stuff (part 1)
- img->bitdepth_luma = sps->bit_depth_luma_minus8 + 8;
- img->bitdepth_scale[0] = 1 << sps->bit_depth_luma_minus8;
- if (sps->chroma_format_idc != YUV400)
- {
- img->bitdepth_chroma = sps->bit_depth_chroma_minus8 + 8;
- img->bitdepth_scale[1] = 1 << sps->bit_depth_chroma_minus8;
- }
- 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( IS_INDEPENDENT(img) )
- {
- for( nplane=0; nplane<MAX_PLANE; nplane++ )
- {
- if( NULL != Co_located_JV[nplane] )
- {
- free_colocated(Co_located_JV[nplane]);
- }
- Co_located_JV[nplane] = alloc_colocated (img->width, img->height,sps->mb_adaptive_frame_field_flag);
- }
- }
- else
- {
- 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, (int) 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 %dn", 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 = %dn", (int) 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;
- }
- }
- }