diff options
Diffstat (limited to 'media/libstagefright/codecs/avc/dec/src/header.cpp')
| -rw-r--r-- | media/libstagefright/codecs/avc/dec/src/header.cpp | 1391 |
1 files changed, 1391 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/avc/dec/src/header.cpp b/media/libstagefright/codecs/avc/dec/src/header.cpp new file mode 100644 index 0000000..8681e2b --- /dev/null +++ b/media/libstagefright/codecs/avc/dec/src/header.cpp @@ -0,0 +1,1391 @@ +/* ------------------------------------------------------------------ + * Copyright (C) 1998-2009 PacketVideo + * + * 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. + * ------------------------------------------------------------------- + */ +#include "avcdec_lib.h" +#include "avcdec_bitstream.h" +#include "avcdec_api.h" + +/** see subclause 7.4.2.1 */ +AVCDec_Status DecodeSPS(AVCDecObject *decvid, AVCDecBitstream *stream) +{ + AVCDec_Status status = AVCDEC_SUCCESS; + AVCSeqParamSet *seqParam; + uint temp; + int i; + uint profile_idc, constrained_set0_flag, constrained_set1_flag, constrained_set2_flag; + uint level_idc, seq_parameter_set_id; + void *userData = decvid->avcHandle->userData; + AVCHandle *avcHandle = decvid->avcHandle; + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "DecodeSPS", -1, -1); + + BitstreamReadBits(stream, 8, &profile_idc); + BitstreamRead1Bit(stream, &constrained_set0_flag); +// if (profile_idc != 66 && constrained_set0_flag != 1) +// { +// return AVCDEC_FAIL; +// } + BitstreamRead1Bit(stream, &constrained_set1_flag); + BitstreamRead1Bit(stream, &constrained_set2_flag); + BitstreamReadBits(stream, 5, &temp); + BitstreamReadBits(stream, 8, &level_idc); + if (level_idc > 51) + { + return AVCDEC_FAIL; + } + if (mapLev2Idx[level_idc] == 255) + { + return AVCDEC_FAIL; + } + ue_v(stream, &seq_parameter_set_id); + + if (seq_parameter_set_id > 31) + { + return AVCDEC_FAIL; + } + + /* Allocate sequence param set for seqParams[seq_parameter_set_id]. */ + if (decvid->seqParams[seq_parameter_set_id] == NULL) /* allocate seqParams[id] */ + { + decvid->seqParams[seq_parameter_set_id] = + (AVCSeqParamSet*) avcHandle->CBAVC_Malloc(userData, sizeof(AVCSeqParamSet), DEFAULT_ATTR); + + if (decvid->seqParams[seq_parameter_set_id] == NULL) + { + return AVCDEC_MEMORY_FAIL; + } + } + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "done alloc seqParams", -1, -1); + + seqParam = decvid->seqParams[seq_parameter_set_id]; + + seqParam->profile_idc = profile_idc; + seqParam->constrained_set0_flag = constrained_set0_flag; + seqParam->constrained_set1_flag = constrained_set1_flag; + seqParam->constrained_set2_flag = constrained_set2_flag; + seqParam->level_idc = level_idc; + seqParam->seq_parameter_set_id = seq_parameter_set_id; + + /* continue decoding SPS */ + ue_v(stream, &(seqParam->log2_max_frame_num_minus4)); + + if (seqParam->log2_max_frame_num_minus4 > 12) + { + return AVCDEC_FAIL; + } + + ue_v(stream, &(seqParam->pic_order_cnt_type)); + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "check point 1", seqParam->log2_max_frame_num_minus4, seqParam->pic_order_cnt_type); + + if (seqParam->pic_order_cnt_type == 0) + { + ue_v(stream, &(seqParam->log2_max_pic_order_cnt_lsb_minus4)); + } + else if (seqParam->pic_order_cnt_type == 1) + { // MC_CHECK + BitstreamRead1Bit(stream, (uint*)&(seqParam->delta_pic_order_always_zero_flag)); + se_v32bit(stream, &(seqParam->offset_for_non_ref_pic)); + se_v32bit(stream, &(seqParam->offset_for_top_to_bottom_field)); + ue_v(stream, &(seqParam->num_ref_frames_in_pic_order_cnt_cycle)); + + for (i = 0; i < (int)(seqParam->num_ref_frames_in_pic_order_cnt_cycle); i++) + { + se_v32bit(stream, &(seqParam->offset_for_ref_frame[i])); + } + } + + ue_v(stream, &(seqParam->num_ref_frames)); + + if (seqParam->num_ref_frames > 16) + { + return AVCDEC_FAIL; + } + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "check point 2", seqParam->num_ref_frames, -1); + + BitstreamRead1Bit(stream, (uint*)&(seqParam->gaps_in_frame_num_value_allowed_flag)); + ue_v(stream, &(seqParam->pic_width_in_mbs_minus1)); + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "picwidth", seqParam->pic_width_in_mbs_minus1, -1); + + ue_v(stream, &(seqParam->pic_height_in_map_units_minus1)); + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "picwidth", seqParam->pic_height_in_map_units_minus1, -1); + + BitstreamRead1Bit(stream, (uint*)&(seqParam->frame_mbs_only_flag)); + + seqParam->mb_adaptive_frame_field_flag = 0; /* default value */ + if (!seqParam->frame_mbs_only_flag) + { + BitstreamRead1Bit(stream, (uint*)&(seqParam->mb_adaptive_frame_field_flag)); + } + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "check point 3", seqParam->frame_mbs_only_flag, -1); + + BitstreamRead1Bit(stream, (uint*)&(seqParam->direct_8x8_inference_flag)); + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "check point 4", seqParam->direct_8x8_inference_flag, -1); + + BitstreamRead1Bit(stream, (uint*)&(seqParam->frame_cropping_flag)); + seqParam->frame_crop_left_offset = 0; /* default value */ + seqParam->frame_crop_right_offset = 0;/* default value */ + seqParam->frame_crop_top_offset = 0;/* default value */ + seqParam->frame_crop_bottom_offset = 0;/* default value */ + if (seqParam->frame_cropping_flag) + { + ue_v(stream, &(seqParam->frame_crop_left_offset)); + ue_v(stream, &(seqParam->frame_crop_right_offset)); + ue_v(stream, &(seqParam->frame_crop_top_offset)); + ue_v(stream, &(seqParam->frame_crop_bottom_offset)); + } + + DEBUG_LOG(userData, AVC_LOGTYPE_INFO, "check point 5", seqParam->frame_cropping_flag, -1); + + BitstreamRead1Bit(stream, (uint*)&(seqParam->vui_parameters_present_flag)); + if (seqParam->vui_parameters_present_flag) + { + status = vui_parameters(decvid, stream, seqParam); + if (status != AVCDEC_SUCCESS) + { + return AVCDEC_FAIL; + } + } + + return status; +} + + +AVCDec_Status vui_parameters(AVCDecObject *decvid, AVCDecBitstream *stream, AVCSeqParamSet *currSPS) +{ + uint temp; + uint temp32; + uint aspect_ratio_idc, overscan_appopriate_flag, video_format, video_full_range_flag; + /* aspect_ratio_info_present_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + BitstreamReadBits(stream, 8, &aspect_ratio_idc); + if (aspect_ratio_idc == 255) + { + /* sar_width */ + BitstreamReadBits(stream, 16, &temp); + /* sar_height */ + BitstreamReadBits(stream, 16, &temp); + } + } + /* overscan_info_present */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + BitstreamRead1Bit(stream, &overscan_appopriate_flag); + } + /* video_signal_type_present_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + BitstreamReadBits(stream, 3, &video_format); + BitstreamRead1Bit(stream, &video_full_range_flag); + /* colour_description_present_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* colour_primaries */ + BitstreamReadBits(stream, 8, &temp); + /* transfer_characteristics */ + BitstreamReadBits(stream, 8, &temp); + /* matrix coefficients */ + BitstreamReadBits(stream, 8, &temp); + } + } + /* chroma_loc_info_present_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* chroma_sample_loc_type_top_field */ + ue_v(stream, &temp); + /* chroma_sample_loc_type_bottom_field */ + ue_v(stream, &temp); + } + + /* timing_info_present_flag*/ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* num_unit_in_tick*/ + BitstreamReadBits(stream, 32, &temp32); + /* time_scale */ + BitstreamReadBits(stream, 32, &temp32); + /* fixed_frame_rate_flag */ + BitstreamRead1Bit(stream, &temp); + } + + /* nal_hrd_parameters_present_flag */ + BitstreamRead1Bit(stream, &temp); + currSPS->vui_parameters.nal_hrd_parameters_present_flag = temp; + if (temp) + { + hrd_parameters(decvid, stream, &(currSPS->vui_parameters.nal_hrd_parameters)); + } + /* vcl_hrd_parameters_present_flag*/ + BitstreamRead1Bit(stream, &temp); + currSPS->vui_parameters.vcl_hrd_parameters_present_flag = temp; + if (temp) + { + hrd_parameters(decvid, stream, &(currSPS->vui_parameters.vcl_hrd_parameters)); + } + if (currSPS->vui_parameters.nal_hrd_parameters_present_flag || currSPS->vui_parameters.vcl_hrd_parameters_present_flag) + { + /* low_delay_hrd_flag */ + BitstreamRead1Bit(stream, &temp); + } + /* pic_struct_present_flag */ + BitstreamRead1Bit(stream, &temp); + currSPS->vui_parameters.pic_struct_present_flag = temp; + /* bitstream_restriction_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* motion_vectors_over_pic_boundaries_flag */ + BitstreamRead1Bit(stream, &temp); + /* max_bytes_per_pic_denom */ + ue_v(stream, &temp); + /* max_bits_per_mb_denom */ + ue_v(stream, &temp); + /* log2_max_mv_length_horizontal */ + ue_v(stream, &temp); + /* log2_max_mv_length_vertical */ + ue_v(stream, &temp); + /* num_reorder_frames */ + ue_v(stream, &temp); + /* max_dec_frame_buffering */ + ue_v(stream, &temp); + } + return AVCDEC_SUCCESS; +} +AVCDec_Status hrd_parameters(AVCDecObject *decvid, AVCDecBitstream *stream, AVCHRDParams *HRDParam) +{ + OSCL_UNUSED_ARG(decvid); + uint temp; + uint cpb_cnt_minus1; + uint i; + ue_v(stream, &cpb_cnt_minus1); + HRDParam->cpb_cnt_minus1 = cpb_cnt_minus1; + /* bit_rate_scale */ + BitstreamReadBits(stream, 4, &temp); + /* cpb_size_scale */ + BitstreamReadBits(stream, 4, &temp); + for (i = 0; i <= cpb_cnt_minus1; i++) + { + /* bit_rate_value_minus1[i] */ + ue_v(stream, &temp); + /* cpb_size_value_minus1[i] */ + ue_v(stream, &temp); + /* cbr_flag[i] */ + ue_v(stream, &temp); + } + /* initial_cpb_removal_delay_length_minus1 */ + BitstreamReadBits(stream, 5, &temp); + /* cpb_removal_delay_length_minus1 */ + BitstreamReadBits(stream, 5, &temp); + HRDParam->cpb_removal_delay_length_minus1 = temp; + /* dpb_output_delay_length_minus1 */ + BitstreamReadBits(stream, 5, &temp); + HRDParam->dpb_output_delay_length_minus1 = temp; + /* time_offset_length */ + BitstreamReadBits(stream, 5, &temp); + HRDParam->time_offset_length = temp; + return AVCDEC_SUCCESS; +} + + +/** see subclause 7.4.2.2 */ +AVCDec_Status DecodePPS(AVCDecObject *decvid, AVCCommonObj *video, AVCDecBitstream *stream) +{ + AVCPicParamSet *picParam; + AVCDec_Status status; + int i, iGroup, numBits; + int PicWidthInMbs, PicHeightInMapUnits, PicSizeInMapUnits; + uint pic_parameter_set_id, seq_parameter_set_id; + void *userData = decvid->avcHandle->userData; + AVCHandle *avcHandle = decvid->avcHandle; + + ue_v(stream, &pic_parameter_set_id); + if (pic_parameter_set_id > 255) + { + return AVCDEC_FAIL; + } + + ue_v(stream, &seq_parameter_set_id); + + if (seq_parameter_set_id > 31) + { + return AVCDEC_FAIL; + } + + /* 2.1 if picParams[pic_param_set_id] is NULL, allocate it. */ + if (decvid->picParams[pic_parameter_set_id] == NULL) + { + decvid->picParams[pic_parameter_set_id] = + (AVCPicParamSet*)avcHandle->CBAVC_Malloc(userData, sizeof(AVCPicParamSet), DEFAULT_ATTR); + if (decvid->picParams[pic_parameter_set_id] == NULL) + { + return AVCDEC_MEMORY_FAIL; + } + + decvid->picParams[pic_parameter_set_id]->slice_group_id = NULL; + } + + video->currPicParams = picParam = decvid->picParams[pic_parameter_set_id]; + picParam->seq_parameter_set_id = seq_parameter_set_id; + picParam->pic_parameter_set_id = pic_parameter_set_id; + + BitstreamRead1Bit(stream, (uint*)&(picParam->entropy_coding_mode_flag)); + if (picParam->entropy_coding_mode_flag) + { + status = AVCDEC_FAIL; + goto clean_up; + } + BitstreamRead1Bit(stream, (uint*)&(picParam->pic_order_present_flag)); + ue_v(stream, &(picParam->num_slice_groups_minus1)); + + if (picParam->num_slice_groups_minus1 > MAX_NUM_SLICE_GROUP - 1) + { + status = AVCDEC_FAIL; + goto clean_up; + } + + picParam->slice_group_change_rate_minus1 = 0; /* default value */ + if (picParam->num_slice_groups_minus1 > 0) + { + ue_v(stream, &(picParam->slice_group_map_type)); + if (picParam->slice_group_map_type == 0) + { + for (iGroup = 0; iGroup <= (int)picParam->num_slice_groups_minus1; iGroup++) + { + ue_v(stream, &(picParam->run_length_minus1[iGroup])); + } + } + else if (picParam->slice_group_map_type == 2) + { // MC_CHECK <= or < + for (iGroup = 0; iGroup < (int)picParam->num_slice_groups_minus1; iGroup++) + { + ue_v(stream, &(picParam->top_left[iGroup])); + ue_v(stream, &(picParam->bottom_right[iGroup])); + } + } + else if (picParam->slice_group_map_type == 3 || + picParam->slice_group_map_type == 4 || + picParam->slice_group_map_type == 5) + { + BitstreamRead1Bit(stream, (uint*)&(picParam->slice_group_change_direction_flag)); + ue_v(stream, &(picParam->slice_group_change_rate_minus1)); + } + else if (picParam->slice_group_map_type == 6) + { + ue_v(stream, &(picParam->pic_size_in_map_units_minus1)); + + numBits = 0;/* ceil(log2(num_slice_groups_minus1+1)) bits */ + i = picParam->num_slice_groups_minus1; + while (i > 0) + { + numBits++; + i >>= 1; + } + + i = picParam->seq_parameter_set_id; + if (decvid->seqParams[i] == NULL) + { + status = AVCDEC_FAIL; + goto clean_up; + } + + + PicWidthInMbs = decvid->seqParams[i]->pic_width_in_mbs_minus1 + 1; + PicHeightInMapUnits = decvid->seqParams[i]->pic_height_in_map_units_minus1 + 1 ; + PicSizeInMapUnits = PicWidthInMbs * PicHeightInMapUnits ; + + /* information has to be consistent with the seq_param */ + if ((int)picParam->pic_size_in_map_units_minus1 != PicSizeInMapUnits - 1) + { + status = AVCDEC_FAIL; + goto clean_up; + } + + if (picParam->slice_group_id) + { + avcHandle->CBAVC_Free(userData, (int)picParam->slice_group_id); + } + picParam->slice_group_id = (uint*)avcHandle->CBAVC_Malloc(userData, sizeof(uint) * PicSizeInMapUnits, DEFAULT_ATTR); + if (picParam->slice_group_id == NULL) + { + status = AVCDEC_MEMORY_FAIL; + goto clean_up; + } + + for (i = 0; i < PicSizeInMapUnits; i++) + { + BitstreamReadBits(stream, numBits, &(picParam->slice_group_id[i])); + } + } + + } + + ue_v(stream, &(picParam->num_ref_idx_l0_active_minus1)); + if (picParam->num_ref_idx_l0_active_minus1 > 31) + { + status = AVCDEC_FAIL; /* out of range */ + goto clean_up; + } + + ue_v(stream, &(picParam->num_ref_idx_l1_active_minus1)); + if (picParam->num_ref_idx_l1_active_minus1 > 31) + { + status = AVCDEC_FAIL; /* out of range */ + goto clean_up; + } + + BitstreamRead1Bit(stream, (uint*)&(picParam->weighted_pred_flag)); + BitstreamReadBits(stream, 2, &(picParam->weighted_bipred_idc)); + if (picParam->weighted_bipred_idc > 2) + { + status = AVCDEC_FAIL; /* out of range */ + goto clean_up; + } + + se_v(stream, &(picParam->pic_init_qp_minus26)); + if (picParam->pic_init_qp_minus26 < -26 || picParam->pic_init_qp_minus26 > 25) + { + status = AVCDEC_FAIL; /* out of range */ + goto clean_up; + } + + se_v(stream, &(picParam->pic_init_qs_minus26)); + if (picParam->pic_init_qs_minus26 < -26 || picParam->pic_init_qs_minus26 > 25) + { + status = AVCDEC_FAIL; /* out of range */ + goto clean_up; + } + + se_v(stream, &(picParam->chroma_qp_index_offset)); + if (picParam->chroma_qp_index_offset < -12 || picParam->chroma_qp_index_offset > 12) + { + status = AVCDEC_FAIL; /* out of range */ + status = AVCDEC_FAIL; /* out of range */ + goto clean_up; + } + + BitstreamReadBits(stream, 3, &pic_parameter_set_id); + picParam->deblocking_filter_control_present_flag = pic_parameter_set_id >> 2; + picParam->constrained_intra_pred_flag = (pic_parameter_set_id >> 1) & 1; + picParam->redundant_pic_cnt_present_flag = pic_parameter_set_id & 1; + + return AVCDEC_SUCCESS; +clean_up: + if (decvid->picParams[pic_parameter_set_id]) + { + if (picParam->slice_group_id) + { + avcHandle->CBAVC_Free(userData, (int)picParam->slice_group_id); + } + decvid->picParams[pic_parameter_set_id]->slice_group_id = NULL; + avcHandle->CBAVC_Free(userData, (int)decvid->picParams[pic_parameter_set_id]); + decvid->picParams[pic_parameter_set_id] = NULL; + return status; + } + return AVCDEC_SUCCESS; +} + + +/* FirstPartOfSliceHeader(); + RestOfSliceHeader() */ +/** see subclause 7.4.3 */ +AVCDec_Status DecodeSliceHeader(AVCDecObject *decvid, AVCCommonObj *video, AVCDecBitstream *stream) +{ + AVCSliceHeader *sliceHdr = video->sliceHdr; + AVCPicParamSet *currPPS; + AVCSeqParamSet *currSPS; + AVCDec_Status status; + uint idr_pic_id; + int slice_type, temp, i; + + ue_v(stream, &(sliceHdr->first_mb_in_slice)); + ue_v(stream, (uint*)&slice_type); + + if (sliceHdr->first_mb_in_slice != 0) + { + if ((int)sliceHdr->slice_type >= 5 && slice_type != (int)sliceHdr->slice_type - 5) + { + return AVCDEC_FAIL; /* slice type doesn't follow the first slice in the picture */ + } + } + sliceHdr->slice_type = (AVCSliceType) slice_type; + if (slice_type > 4) + { + slice_type -= 5; + } + + if (slice_type == 1 || slice_type > 2) + { + return AVCDEC_FAIL; + } + + video->slice_type = (AVCSliceType) slice_type; + + ue_v(stream, &(sliceHdr->pic_parameter_set_id)); + /* end FirstPartSliceHeader() */ + /* begin RestOfSliceHeader() */ + /* after getting pic_parameter_set_id, we have to load corresponding SPS and PPS */ + if (sliceHdr->pic_parameter_set_id > 255) + { + return AVCDEC_FAIL; + } + + if (decvid->picParams[sliceHdr->pic_parameter_set_id] == NULL) + return AVCDEC_FAIL; /* PPS doesn't exist */ + + currPPS = video->currPicParams = decvid->picParams[sliceHdr->pic_parameter_set_id]; + + if (decvid->seqParams[currPPS->seq_parameter_set_id] == NULL) + return AVCDEC_FAIL; /* SPS doesn't exist */ + + currSPS = video->currSeqParams = decvid->seqParams[currPPS->seq_parameter_set_id]; + + if (currPPS->seq_parameter_set_id != video->seq_parameter_set_id) + { + video->seq_parameter_set_id = currPPS->seq_parameter_set_id; + status = (AVCDec_Status)AVCConfigureSequence(decvid->avcHandle, video, false); + if (status != AVCDEC_SUCCESS) + return status; + video->level_idc = currSPS->level_idc; + } + + /* derived variables from SPS */ + video->MaxFrameNum = 1 << (currSPS->log2_max_frame_num_minus4 + 4); + // MC_OPTIMIZE + video->PicWidthInMbs = currSPS->pic_width_in_mbs_minus1 + 1; + video->PicWidthInSamplesL = video->PicWidthInMbs * 16 ; + video->PicWidthInSamplesC = video->PicWidthInMbs * 8 ; + video->PicHeightInMapUnits = currSPS->pic_height_in_map_units_minus1 + 1 ; + video->PicSizeInMapUnits = video->PicWidthInMbs * video->PicHeightInMapUnits ; + video->FrameHeightInMbs = (2 - currSPS->frame_mbs_only_flag) * video->PicHeightInMapUnits ; + + /* derived from PPS */ + video->SliceGroupChangeRate = currPPS->slice_group_change_rate_minus1 + 1; + + /* then we can continue decoding slice header */ + + BitstreamReadBits(stream, currSPS->log2_max_frame_num_minus4 + 4, &(sliceHdr->frame_num)); + + if (video->currFS == NULL && sliceHdr->frame_num != 0) + { + video->prevFrameNum = video->PrevRefFrameNum = sliceHdr->frame_num - 1; + } + + if (!currSPS->frame_mbs_only_flag) + { + BitstreamRead1Bit(stream, &(sliceHdr->field_pic_flag)); + if (sliceHdr->field_pic_flag) + { + return AVCDEC_FAIL; + } + } + + /* derived variables from slice header*/ + video->PicHeightInMbs = video->FrameHeightInMbs; + video->PicHeightInSamplesL = video->PicHeightInMbs * 16; + video->PicHeightInSamplesC = video->PicHeightInMbs * 8; + video->PicSizeInMbs = video->PicWidthInMbs * video->PicHeightInMbs; + + if (sliceHdr->first_mb_in_slice >= video->PicSizeInMbs) + { + return AVCDEC_FAIL; + } + video->MaxPicNum = video->MaxFrameNum; + video->CurrPicNum = sliceHdr->frame_num; + + + if (video->nal_unit_type == AVC_NALTYPE_IDR) + { + if (sliceHdr->frame_num != 0) + { + return AVCDEC_FAIL; + } + ue_v(stream, &idr_pic_id); + } + + sliceHdr->delta_pic_order_cnt_bottom = 0; /* default value */ + sliceHdr->delta_pic_order_cnt[0] = 0; /* default value */ + sliceHdr->delta_pic_order_cnt[1] = 0; /* default value */ + if (currSPS->pic_order_cnt_type == 0) + { + BitstreamReadBits(stream, currSPS->log2_max_pic_order_cnt_lsb_minus4 + 4, + &(sliceHdr->pic_order_cnt_lsb)); + video->MaxPicOrderCntLsb = 1 << (currSPS->log2_max_pic_order_cnt_lsb_minus4 + 4); + if (sliceHdr->pic_order_cnt_lsb > video->MaxPicOrderCntLsb - 1) + return AVCDEC_FAIL; /* out of range */ + + if (currPPS->pic_order_present_flag) + { + se_v32bit(stream, &(sliceHdr->delta_pic_order_cnt_bottom)); + } + } + if (currSPS->pic_order_cnt_type == 1 && !currSPS->delta_pic_order_always_zero_flag) + { + se_v32bit(stream, &(sliceHdr->delta_pic_order_cnt[0])); + if (currPPS->pic_order_present_flag) + { + se_v32bit(stream, &(sliceHdr->delta_pic_order_cnt[1])); + } + } + + sliceHdr->redundant_pic_cnt = 0; /* default value */ + if (currPPS->redundant_pic_cnt_present_flag) + { + // MC_CHECK + ue_v(stream, &(sliceHdr->redundant_pic_cnt)); + if (sliceHdr->redundant_pic_cnt > 127) /* out of range */ + return AVCDEC_FAIL; + + if (sliceHdr->redundant_pic_cnt > 0) /* redundant picture */ + return AVCDEC_FAIL; /* not supported */ + } + sliceHdr->num_ref_idx_l0_active_minus1 = currPPS->num_ref_idx_l0_active_minus1; + sliceHdr->num_ref_idx_l1_active_minus1 = currPPS->num_ref_idx_l1_active_minus1; + + if (slice_type == AVC_P_SLICE) + { + BitstreamRead1Bit(stream, &(sliceHdr->num_ref_idx_active_override_flag)); + if (sliceHdr->num_ref_idx_active_override_flag) + { + ue_v(stream, &(sliceHdr->num_ref_idx_l0_active_minus1)); + } + else /* the following condition is not allowed if the flag is zero */ + { + if ((slice_type == AVC_P_SLICE) && currPPS->num_ref_idx_l0_active_minus1 > 15) + { + return AVCDEC_FAIL; /* not allowed */ + } + } + } + + + if (sliceHdr->num_ref_idx_l0_active_minus1 > 15 || + sliceHdr->num_ref_idx_l1_active_minus1 > 15) + { + return AVCDEC_FAIL; /* not allowed */ + } + /* if MbaffFrameFlag =1, + max value of index is num_ref_idx_l0_active_minus1 for frame MBs and + 2*sliceHdr->num_ref_idx_l0_active_minus1 + 1 for field MBs */ + + /* ref_pic_list_reordering() */ + status = ref_pic_list_reordering(video, stream, sliceHdr, slice_type); + if (status != AVCDEC_SUCCESS) + { + return status; + } + + + if (video->nal_ref_idc != 0) + { + dec_ref_pic_marking(video, stream, sliceHdr); + } + se_v(stream, &(sliceHdr->slice_qp_delta)); + + video->QPy = 26 + currPPS->pic_init_qp_minus26 + sliceHdr->slice_qp_delta; + if (video->QPy > 51 || video->QPy < 0) + { + video->QPy = AVC_CLIP3(0, 51, video->QPy); +// return AVCDEC_FAIL; + } + video->QPc = mapQPi2QPc[AVC_CLIP3(0, 51, video->QPy + video->currPicParams->chroma_qp_index_offset)]; + + video->QPy_div_6 = (video->QPy * 43) >> 8; + video->QPy_mod_6 = video->QPy - 6 * video->QPy_div_6; + + video->QPc_div_6 = (video->QPc * 43) >> 8; + video->QPc_mod_6 = video->QPc - 6 * video->QPc_div_6; + + sliceHdr->slice_alpha_c0_offset_div2 = 0; + sliceHdr->slice_beta_offset_div_2 = 0; + sliceHdr->disable_deblocking_filter_idc = 0; + video->FilterOffsetA = video->FilterOffsetB = 0; + + if (currPPS->deblocking_filter_control_present_flag) + { + ue_v(stream, &(sliceHdr->disable_deblocking_filter_idc)); + if (sliceHdr->disable_deblocking_filter_idc > 2) + { + return AVCDEC_FAIL; /* out of range */ + } + if (sliceHdr->disable_deblocking_filter_idc != 1) + { + se_v(stream, &(sliceHdr->slice_alpha_c0_offset_div2)); + if (sliceHdr->slice_alpha_c0_offset_div2 < -6 || + sliceHdr->slice_alpha_c0_offset_div2 > 6) + { + return AVCDEC_FAIL; + } + video->FilterOffsetA = sliceHdr->slice_alpha_c0_offset_div2 << 1; + + se_v(stream, &(sliceHdr->slice_beta_offset_div_2)); + if (sliceHdr->slice_beta_offset_div_2 < -6 || + sliceHdr->slice_beta_offset_div_2 > 6) + { + return AVCDEC_FAIL; + } + video->FilterOffsetB = sliceHdr->slice_beta_offset_div_2 << 1; + } + } + + if (currPPS->num_slice_groups_minus1 > 0 && currPPS->slice_group_map_type >= 3 + && currPPS->slice_group_map_type <= 5) + { + /* Ceil(Log2(PicSizeInMapUnits/(float)SliceGroupChangeRate + 1)) */ + temp = video->PicSizeInMapUnits / video->SliceGroupChangeRate; + if (video->PicSizeInMapUnits % video->SliceGroupChangeRate) + { + temp++; + } + i = 0; + temp++; + while (temp) + { + temp >>= 1; + i++; + } + + BitstreamReadBits(stream, i, &(sliceHdr->slice_group_change_cycle)); + video->MapUnitsInSliceGroup0 = + AVC_MIN(sliceHdr->slice_group_change_cycle * video->SliceGroupChangeRate, video->PicSizeInMapUnits); + } + + return AVCDEC_SUCCESS; +} + + +AVCDec_Status fill_frame_num_gap(AVCHandle *avcHandle, AVCCommonObj *video) +{ + AVCDec_Status status; + int CurrFrameNum; + int UnusedShortTermFrameNum; + int tmp1 = video->sliceHdr->delta_pic_order_cnt[0]; + int tmp2 = video->sliceHdr->delta_pic_order_cnt[1]; + int tmp3 = video->CurrPicNum; + int tmp4 = video->sliceHdr->adaptive_ref_pic_marking_mode_flag; + UnusedShortTermFrameNum = (video->prevFrameNum + 1) % video->MaxFrameNum; + CurrFrameNum = video->sliceHdr->frame_num; + + video->sliceHdr->delta_pic_order_cnt[0] = 0; + video->sliceHdr->delta_pic_order_cnt[1] = 0; + while (CurrFrameNum != UnusedShortTermFrameNum) + { + video->CurrPicNum = UnusedShortTermFrameNum; + video->sliceHdr->frame_num = UnusedShortTermFrameNum; + + status = (AVCDec_Status)DPBInitBuffer(avcHandle, video); + if (status != AVCDEC_SUCCESS) /* no buffer available */ + { + return status; + } + DecodePOC(video); + DPBInitPic(video, UnusedShortTermFrameNum); + + + video->currFS->PicOrderCnt = video->PicOrderCnt; + video->currFS->FrameNum = video->sliceHdr->frame_num; + + /* initialize everything to zero */ + video->currFS->IsOutputted = 0x01; + video->currFS->IsReference = 3; + video->currFS->IsLongTerm = 0; + video->currFS->frame.isReference = TRUE; + video->currFS->frame.isLongTerm = FALSE; + + video->sliceHdr->adaptive_ref_pic_marking_mode_flag = 0; + + status = (AVCDec_Status)StorePictureInDPB(avcHandle, video); // MC_CHECK check the return status + if (status != AVCDEC_SUCCESS) + { + return AVCDEC_FAIL; + } + video->prevFrameNum = UnusedShortTermFrameNum; + UnusedShortTermFrameNum = (UnusedShortTermFrameNum + 1) % video->MaxFrameNum; + } + video->sliceHdr->frame_num = CurrFrameNum; + video->CurrPicNum = tmp3; + video->sliceHdr->delta_pic_order_cnt[0] = tmp1; + video->sliceHdr->delta_pic_order_cnt[1] = tmp2; + video->sliceHdr->adaptive_ref_pic_marking_mode_flag = tmp4; + return AVCDEC_SUCCESS; +} + +/** see subclause 7.4.3.1 */ +AVCDec_Status ref_pic_list_reordering(AVCCommonObj *video, AVCDecBitstream *stream, AVCSliceHeader *sliceHdr, int slice_type) +{ + int i; + + if (slice_type != AVC_I_SLICE) + { + BitstreamRead1Bit(stream, &(sliceHdr->ref_pic_list_reordering_flag_l0)); + if (sliceHdr->ref_pic_list_reordering_flag_l0) + { + i = 0; + do + { + ue_v(stream, &(sliceHdr->reordering_of_pic_nums_idc_l0[i])); + if (sliceHdr->reordering_of_pic_nums_idc_l0[i] == 0 || + sliceHdr->reordering_of_pic_nums_idc_l0[i] == 1) + { + ue_v(stream, &(sliceHdr->abs_diff_pic_num_minus1_l0[i])); + if (sliceHdr->reordering_of_pic_nums_idc_l0[i] == 0 && + sliceHdr->abs_diff_pic_num_minus1_l0[i] > video->MaxPicNum / 2 - 1) + { + return AVCDEC_FAIL; /* out of range */ + } + if (sliceHdr->reordering_of_pic_nums_idc_l0[i] == 1 && + sliceHdr->abs_diff_pic_num_minus1_l0[i] > video->MaxPicNum / 2 - 2) + { + return AVCDEC_FAIL; /* out of range */ + } + } + else if (sliceHdr->reordering_of_pic_nums_idc_l0[i] == 2) + { + ue_v(stream, &(sliceHdr->long_term_pic_num_l0[i])); + } + i++; + } + while (sliceHdr->reordering_of_pic_nums_idc_l0[i-1] != 3 + && i <= (int)sliceHdr->num_ref_idx_l0_active_minus1 + 1) ; + } + } + return AVCDEC_SUCCESS; +} + +/** see subclause 7.4.3.3 */ +AVCDec_Status dec_ref_pic_marking(AVCCommonObj *video, AVCDecBitstream *stream, AVCSliceHeader *sliceHdr) +{ + int i; + if (video->nal_unit_type == AVC_NALTYPE_IDR) + { + BitstreamRead1Bit(stream, &(sliceHdr->no_output_of_prior_pics_flag)); + BitstreamRead1Bit(stream, &(sliceHdr->long_term_reference_flag)); + if (sliceHdr->long_term_reference_flag == 0) /* used for short-term */ + { + video->MaxLongTermFrameIdx = -1; /* no long-term frame indx */ + } + else /* used for long-term */ + { + video->MaxLongTermFrameIdx = 0; + video->LongTermFrameIdx = 0; + } + } + else + { + BitstreamRead1Bit(stream, &(sliceHdr->adaptive_ref_pic_marking_mode_flag)); + if (sliceHdr->adaptive_ref_pic_marking_mode_flag) + { + i = 0; + do + { + ue_v(stream, &(sliceHdr->memory_management_control_operation[i])); + if (sliceHdr->memory_management_control_operation[i] == 1 || + sliceHdr->memory_management_control_operation[i] == 3) + { + ue_v(stream, &(sliceHdr->difference_of_pic_nums_minus1[i])); + } + if (sliceHdr->memory_management_control_operation[i] == 2) + { + ue_v(stream, &(sliceHdr->long_term_pic_num[i])); + } + if (sliceHdr->memory_management_control_operation[i] == 3 || + sliceHdr->memory_management_control_operation[i] == 6) + { + ue_v(stream, &(sliceHdr->long_term_frame_idx[i])); + } + if (sliceHdr->memory_management_control_operation[i] == 4) + { + ue_v(stream, &(sliceHdr->max_long_term_frame_idx_plus1[i])); + } + i++; + } + while (sliceHdr->memory_management_control_operation[i-1] != 0 && i < MAX_DEC_REF_PIC_MARKING); + if (i >= MAX_DEC_REF_PIC_MARKING) + { + return AVCDEC_FAIL; /* we're screwed!!, not enough memory */ + } + } + } + + return AVCDEC_SUCCESS; +} + +/* see subclause 8.2.1 Decoding process for picture order count. */ +AVCDec_Status DecodePOC(AVCCommonObj *video) +{ + AVCSeqParamSet *currSPS = video->currSeqParams; + AVCSliceHeader *sliceHdr = video->sliceHdr; + int i; + + switch (currSPS->pic_order_cnt_type) + { + case 0: /* POC MODE 0 , subclause 8.2.1.1 */ + if (video->nal_unit_type == AVC_NALTYPE_IDR) + { + video->prevPicOrderCntMsb = 0; + video->prevPicOrderCntLsb = 0; + } + + /* Calculate the MSBs of current picture */ + if (sliceHdr->pic_order_cnt_lsb < video->prevPicOrderCntLsb && + (video->prevPicOrderCntLsb - sliceHdr->pic_order_cnt_lsb) >= (video->MaxPicOrderCntLsb / 2)) + video->PicOrderCntMsb = video->prevPicOrderCntMsb + video->MaxPicOrderCntLsb; + else if (sliceHdr->pic_order_cnt_lsb > video->prevPicOrderCntLsb && + (sliceHdr->pic_order_cnt_lsb - video->prevPicOrderCntLsb) > (video->MaxPicOrderCntLsb / 2)) + video->PicOrderCntMsb = video->prevPicOrderCntMsb - video->MaxPicOrderCntLsb; + else + video->PicOrderCntMsb = video->prevPicOrderCntMsb; + + /* JVT-I010 page 81 is different from JM7.3 */ + + + video->PicOrderCnt = video->TopFieldOrderCnt = video->PicOrderCntMsb + sliceHdr->pic_order_cnt_lsb; + video->BottomFieldOrderCnt = video->TopFieldOrderCnt + sliceHdr->delta_pic_order_cnt_bottom; + + break; + + + case 1: /* POC MODE 1, subclause 8.2.1.2 */ + /* calculate FrameNumOffset */ + if (video->nal_unit_type == AVC_NALTYPE_IDR) + { + video->prevFrameNumOffset = 0; + video->FrameNumOffset = 0; + } + else if (video->prevFrameNum > sliceHdr->frame_num) + { + video->FrameNumOffset = video->prevFrameNumOffset + video->MaxFrameNum; + } + else + { + video->FrameNumOffset = video->prevFrameNumOffset; + } + /* calculate absFrameNum */ + if (currSPS->num_ref_frames_in_pic_order_cnt_cycle) + { + video->absFrameNum = video->FrameNumOffset + sliceHdr->frame_num; + } + else + { + video->absFrameNum = 0; + } + + if (video->absFrameNum > 0 && video->nal_ref_idc == 0) + { + video->absFrameNum--; + } + + /* derive picOrderCntCycleCnt and frameNumInPicOrderCntCycle */ + if (video->absFrameNum > 0) + { + video->picOrderCntCycleCnt = (video->absFrameNum - 1) / currSPS->num_ref_frames_in_pic_order_cnt_cycle; + video->frameNumInPicOrderCntCycle = (video->absFrameNum - 1) % currSPS->num_ref_frames_in_pic_order_cnt_cycle; + } + /* derive expectedDeltaPerPicOrderCntCycle */ + video->expectedDeltaPerPicOrderCntCycle = 0; + for (i = 0; i < (int)currSPS->num_ref_frames_in_pic_order_cnt_cycle; i++) + { + video->expectedDeltaPerPicOrderCntCycle += currSPS->offset_for_ref_frame[i]; + } + /* derive expectedPicOrderCnt */ + if (video->absFrameNum) + { + video->expectedPicOrderCnt = video->picOrderCntCycleCnt * video->expectedDeltaPerPicOrderCntCycle; + for (i = 0; i <= video->frameNumInPicOrderCntCycle; i++) + { + video->expectedPicOrderCnt += currSPS->offset_for_ref_frame[i]; + } + } + else + { + video->expectedPicOrderCnt = 0; + } + + if (video->nal_ref_idc == 0) + { + video->expectedPicOrderCnt += currSPS->offset_for_non_ref_pic; + } + /* derive TopFieldOrderCnt and BottomFieldOrderCnt */ + + video->TopFieldOrderCnt = video->expectedPicOrderCnt + sliceHdr->delta_pic_order_cnt[0]; + video->BottomFieldOrderCnt = video->TopFieldOrderCnt + currSPS->offset_for_top_to_bottom_field + sliceHdr->delta_pic_order_cnt[1]; + + video->PicOrderCnt = AVC_MIN(video->TopFieldOrderCnt, video->BottomFieldOrderCnt); + + + break; + + + case 2: /* POC MODE 2, subclause 8.2.1.3 */ + if (video->nal_unit_type == AVC_NALTYPE_IDR) + { + video->FrameNumOffset = 0; + } + else if (video->prevFrameNum > sliceHdr->frame_num) + { + video->FrameNumOffset = video->prevFrameNumOffset + video->MaxFrameNum; + } + else + { + video->FrameNumOffset = video->prevFrameNumOffset; + } + /* derive tempPicOrderCnt, we just use PicOrderCnt */ + if (video->nal_unit_type == AVC_NALTYPE_IDR) + { + video->PicOrderCnt = 0; + } + else if (video->nal_ref_idc == 0) + { + video->PicOrderCnt = 2 * (video->FrameNumOffset + sliceHdr->frame_num) - 1; + } + else + { + video->PicOrderCnt = 2 * (video->FrameNumOffset + sliceHdr->frame_num); + } + video->TopFieldOrderCnt = video->BottomFieldOrderCnt = video->PicOrderCnt; + break; + default: + return AVCDEC_FAIL; + } + + return AVCDEC_SUCCESS; +} + + +AVCDec_Status DecodeSEI(AVCDecObject *decvid, AVCDecBitstream *stream) +{ + OSCL_UNUSED_ARG(decvid); + OSCL_UNUSED_ARG(stream); + return AVCDEC_SUCCESS; +} + +AVCDec_Status sei_payload(AVCDecObject *decvid, AVCDecBitstream *stream, uint payloadType, uint payloadSize) +{ + AVCDec_Status status = AVCDEC_SUCCESS; + uint i; + switch (payloadType) + { + case 0: + /* buffering period SEI */ + status = buffering_period(decvid, stream); + break; + case 1: + /* picture timing SEI */ + status = pic_timing(decvid, stream); + break; + case 2: + + case 3: + + case 4: + + case 5: + + case 8: + + case 9: + + case 10: + + case 11: + + case 12: + + case 13: + + case 14: + + case 15: + + case 16: + + case 17: + for (i = 0; i < payloadSize; i++) + { + BitstreamFlushBits(stream, 8); + } + break; + case 6: + /* recovery point SEI */ + status = recovery_point(decvid, stream); + break; + case 7: + /* decoded reference picture marking repetition SEI */ + status = dec_ref_pic_marking_repetition(decvid, stream); + break; + + case 18: + /* motion-constrained slice group set SEI */ + status = motion_constrained_slice_group_set(decvid, stream); + break; + default: + /* reserved_sei_message */ + for (i = 0; i < payloadSize; i++) + { + BitstreamFlushBits(stream, 8); + } + break; + } + BitstreamByteAlign(stream); + return status; +} + +AVCDec_Status buffering_period(AVCDecObject *decvid, AVCDecBitstream *stream) +{ + AVCSeqParamSet *currSPS; + uint seq_parameter_set_id; + uint temp; + uint i; + ue_v(stream, &seq_parameter_set_id); + if (seq_parameter_set_id > 31) + { + return AVCDEC_FAIL; + } + +// decvid->common->seq_parameter_set_id = seq_parameter_set_id; + + currSPS = decvid->seqParams[seq_parameter_set_id]; + if (currSPS->vui_parameters.nal_hrd_parameters_present_flag) + { + for (i = 0; i <= currSPS->vui_parameters.nal_hrd_parameters.cpb_cnt_minus1; i++) + { + /* initial_cpb_removal_delay[i] */ + BitstreamReadBits(stream, currSPS->vui_parameters.nal_hrd_parameters.cpb_removal_delay_length_minus1 + 1, &temp); + /*initial _cpb_removal_delay_offset[i] */ + BitstreamReadBits(stream, currSPS->vui_parameters.nal_hrd_parameters.cpb_removal_delay_length_minus1 + 1, &temp); + } + } + + if (currSPS->vui_parameters.vcl_hrd_parameters_present_flag) + { + for (i = 0; i <= currSPS->vui_parameters.vcl_hrd_parameters.cpb_cnt_minus1; i++) + { + /* initial_cpb_removal_delay[i] */ + BitstreamReadBits(stream, currSPS->vui_parameters.vcl_hrd_parameters.cpb_removal_delay_length_minus1 + 1, &temp); + /*initial _cpb_removal_delay_offset[i] */ + BitstreamReadBits(stream, currSPS->vui_parameters.vcl_hrd_parameters.cpb_removal_delay_length_minus1 + 1, &temp); + } + } + + return AVCDEC_SUCCESS; +} +AVCDec_Status pic_timing(AVCDecObject *decvid, AVCDecBitstream *stream) +{ + AVCSeqParamSet *currSPS; + uint temp, NumClockTs = 0, time_offset_length = 24, full_timestamp_flag; + uint i; + + currSPS = decvid->seqParams[decvid->common->seq_parameter_set_id]; + + if (currSPS->vui_parameters.nal_hrd_parameters_present_flag) + { + BitstreamReadBits(stream, currSPS->vui_parameters.nal_hrd_parameters.cpb_removal_delay_length_minus1 + 1, &temp); + BitstreamReadBits(stream, currSPS->vui_parameters.nal_hrd_parameters.dpb_output_delay_length_minus1 + 1, &temp); + time_offset_length = currSPS->vui_parameters.nal_hrd_parameters.time_offset_length; + } + else if (currSPS->vui_parameters.vcl_hrd_parameters_present_flag) + { + BitstreamReadBits(stream, currSPS->vui_parameters.vcl_hrd_parameters.cpb_removal_delay_length_minus1 + 1, &temp); + BitstreamReadBits(stream, currSPS->vui_parameters.vcl_hrd_parameters.dpb_output_delay_length_minus1 + 1, &temp); + time_offset_length = currSPS->vui_parameters.vcl_hrd_parameters.time_offset_length; + } + + if (currSPS->vui_parameters.pic_struct_present_flag) + { + /* pic_struct */ + BitstreamReadBits(stream, 4, &temp); + + switch (temp) + { + case 0: + case 1: + case 2: + NumClockTs = 1; + break; + case 3: + case 4: + case 7: + NumClockTs = 2; + break; + case 5: + case 6: + case 8: + NumClockTs = 3; + break; + default: + NumClockTs = 0; + break; + } + + for (i = 0; i < NumClockTs; i++) + { + /* clock_timestamp_flag[i] */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* ct_type */ + BitstreamReadBits(stream, 2, &temp); + /* nuit_field_based_flag */ + BitstreamRead1Bit(stream, &temp); + /* counting_type */ + BitstreamReadBits(stream, 5, &temp); + /* full_timestamp_flag */ + BitstreamRead1Bit(stream, &temp); + full_timestamp_flag = temp; + /* discontinuity_flag */ + BitstreamRead1Bit(stream, &temp); + /* cnt_dropped_flag */ + BitstreamRead1Bit(stream, &temp); + /* n_frames */ + BitstreamReadBits(stream, 8, &temp); + + + if (full_timestamp_flag) + { + /* seconds_value */ + BitstreamReadBits(stream, 6, &temp); + /* minutes_value */ + BitstreamReadBits(stream, 6, &temp); + /* hours_value */ + BitstreamReadBits(stream, 5, &temp); + } + else + { + /* seconds_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* seconds_value */ + BitstreamReadBits(stream, 6, &temp); + /* minutes_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* minutes_value */ + BitstreamReadBits(stream, 6, &temp); + + /* hourss_flag */ + BitstreamRead1Bit(stream, &temp); + + if (temp) + { + /* hours_value */ + BitstreamReadBits(stream, 5, &temp); + } + + } + } + } + + if (time_offset_length) + { + /* time_offset */ + BitstreamReadBits(stream, time_offset_length, &temp); + } + else + { + /* time_offset */ + temp = 0; + } + } + } + } + return AVCDEC_SUCCESS; +} +AVCDec_Status recovery_point(AVCDecObject *decvid, AVCDecBitstream *stream) +{ + OSCL_UNUSED_ARG(decvid); + uint temp; + /* recover_frame_cnt */ + ue_v(stream, &temp); + /* exact_match_flag */ + BitstreamRead1Bit(stream, &temp); + /* broken_link_flag */ + BitstreamRead1Bit(stream, &temp); + /* changing slic_group_idc */ + BitstreamReadBits(stream, 2, &temp); + return AVCDEC_SUCCESS; +} +AVCDec_Status dec_ref_pic_marking_repetition(AVCDecObject *decvid, AVCDecBitstream *stream) +{ + AVCSeqParamSet *currSPS; + uint temp; + currSPS = decvid->seqParams[decvid->common->seq_parameter_set_id]; + /* original_idr_flag */ + BitstreamRead1Bit(stream, &temp); + /* original_frame_num */ + ue_v(stream, &temp); + if (currSPS->frame_mbs_only_flag == 0) + { + /* original_field_pic_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* original_bottom_field_flag */ + BitstreamRead1Bit(stream, &temp); + } + } + + /* dec_ref_pic_marking(video,stream,sliceHdr); */ + + + return AVCDEC_SUCCESS; +} +AVCDec_Status motion_constrained_slice_group_set(AVCDecObject *decvid, AVCDecBitstream *stream) +{ + OSCL_UNUSED_ARG(decvid); + uint temp, i, numBits; + /* num_slice_groups_in_set_minus1 */ + ue_v(stream, &temp); + + numBits = 0;/* ceil(log2(num_slice_groups_minus1+1)) bits */ + i = temp; + while (i > 0) + { + numBits++; + i >>= 1; + } + for (i = 0; i <= temp; i++) + { + /* slice_group_id */ + BitstreamReadBits(stream, numBits, &temp); + } + /* exact_sample_value_match_flag */ + BitstreamRead1Bit(stream, &temp); + /* pan_scan_rect_flag */ + BitstreamRead1Bit(stream, &temp); + if (temp) + { + /* pan_scan_rect_id */ + ue_v(stream, &temp); + } + + return AVCDEC_SUCCESS; +} + |