URL
https://opencores.org/ocsvn/bluespec-h264/bluespec-h264/trunk
Subversion Repositories bluespec-h264
[/] [bluespec-h264/] [trunk/] [test/] [decoder/] [ldecod/] [src/] [parset.c] - Rev 14
Go to most recent revision | Compare with Previous | Blame | View Log
/*! ************************************************************************ * \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; } } }
Go to most recent revision | Compare with Previous | Blame | View Log