mirror of
https://github.com/gnif/LookingGlass.git
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1009 lines
34 KiB
C
1009 lines
34 KiB
C
/*
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Looking Glass - KVM FrameRelay (KVMFR) Client
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Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "nal.h"
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#include "debug.h"
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#include "utils.h"
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#include <stdlib.h>
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#include <string.h>
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#define DEBUG_NAL
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struct NAL
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{
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uint8_t primary_pic_type;
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bool primary_pic_type_valid;
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bool sps_valid;
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NAL_SPS sps;
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int32_t * sps_offset_for_ref_frame;
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uint32_t sps_num_ref_frames_in_pic_order_cnt_cycle;
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bool vui_valid;
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NAL_VUI vui;
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NAL_CPB * vui_nal_hrd_parameters_cpb;
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uint32_t vui_nal_hrd_parameters_cpb_size;
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NAL_CPB * vui_vcl_hrd_parameters_cpb;
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uint32_t vui_vcl_hrd_parameters_cpb_size;
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bool pps_valid;
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NAL_PPS pps;
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NAL_SLICE_GROUP * pps_slice_groups;
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uint32_t pps_slice_groups_size;
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uint32_t * pps_slice_group_id;
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uint32_t pps_slice_group_id_size;
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bool slice_valid;
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NAL_SLICE slice;
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NAL_PW_TABLE_L * slice_pred_weight_table_l0;
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uint32_t slice_pred_weight_table_l0_size;
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NAL_PW_TABLE_L * slice_pred_weight_table_l1;
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uint32_t slice_pred_weight_table_l1_size;
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};
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bool nal_initialize(NAL * ptr)
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{
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*ptr = (NAL)malloc(sizeof(struct NAL));
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memset(*ptr, 0, sizeof(struct NAL));
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return true;
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}
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void nal_deinitialize(NAL this)
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{
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free(this->slice_pred_weight_table_l1);
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free(this->slice_pred_weight_table_l0);
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free(this->pps_slice_group_id);
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free(this->pps_slice_groups);
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free(this->sps_offset_for_ref_frame);
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free(this->vui_nal_hrd_parameters_cpb);
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free(this->vui_vcl_hrd_parameters_cpb);
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free(this);
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}
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static bool parse_nal_hrd(
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NAL_HRD * const hrd,
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NAL_CPB ** cpb,
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uint32_t * cpb_size,
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const uint8_t * src,
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size_t size,
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size_t * const offset)
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{
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hrd->cpb_cnt_minus1 = decode_u_golomb(src, offset);
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hrd->bit_rate_scale = get_bits(src, offset, 4);
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hrd->cpb_size_scale = get_bits(src, offset, 4);
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if (*cpb_size < hrd->cpb_size_scale)
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{
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*cpb = realloc(*cpb, hrd->cpb_size_scale * sizeof(NAL_CPB));
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*cpb_size = hrd->cpb_size_scale;
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}
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hrd->cpb = *cpb;
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for(uint32_t i = 0; i < hrd->cpb_size_scale; ++i)
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{
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hrd->cpb[i].bit_rate_value_minus1 = decode_u_golomb(src, offset);
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hrd->cpb[i].cpb_size_value_minus1 = decode_u_golomb(src, offset);
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hrd->cpb[i].cbr_flag = get_bit(src, offset);
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}
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hrd->initial_cpb_removal_delay_length_minus1 = get_bits(src, offset, 5);
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hrd->cpb_removal_delay_length_minus1 = get_bits(src, offset, 5);
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hrd->dpb_output_delay_length_minus1 = get_bits(src, offset, 5);
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hrd->time_offset_length = get_bits(src, offset, 5);
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return true;
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}
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static bool parse_nal_vui(NAL this, const uint8_t * src, size_t size, size_t * const offset)
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{
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NAL_VUI * vui = &this->vui;
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memset(vui, 0, sizeof(NAL_VUI));
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vui->aspect_ratio_info_present_flag = get_bit(src, offset);
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if (vui->aspect_ratio_info_present_flag)
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{
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vui->aspect_ratio_idc = get_bits(src, offset, 8);
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if (vui->aspect_ratio_idc == IDC_VUI_ASPECT_RATIO_EXTENDED_SAR)
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{
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vui->sar_width = get_bits(src, offset, 16);
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vui->sar_height = get_bits(src, offset, 16);
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}
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}
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vui->overscan_info_present_flag = get_bit(src, offset);
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if (vui->overscan_info_present_flag)
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vui->overscan_appropriate_flag = get_bit(src, offset);
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vui->video_signal_type_present_flag = get_bit(src, offset);
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if (vui->video_signal_type_present_flag)
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{
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vui->video_format = get_bits(src, offset, 3);
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vui->video_full_range_flag = get_bit(src, offset);
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vui->colour_description_present_flag = get_bit(src, offset);
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if (vui->colour_description_present_flag)
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{
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vui->colour_primaries = get_bits(src, offset, 8);
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vui->transfer_characteristics = get_bits(src, offset, 8);
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vui->matrix_coefficients = get_bits(src, offset, 8);
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}
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}
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vui->chroma_loc_info_present_flag = get_bit(src, offset);
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if (vui->chroma_loc_info_present_flag)
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{
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vui->chroma_sample_loc_type_top_field = decode_u_golomb(src, offset);
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vui->chroma_sample_loc_type_bottom_field = decode_u_golomb(src, offset);
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}
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vui->timing_info_present_flag = get_bit(src, offset);
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if (vui->timing_info_present_flag)
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{
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vui->num_units_in_tick = get_bits(src, offset, 32);
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vui->time_scale = get_bits(src, offset, 32);
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vui->fixed_frame_rate_flag = get_bit(src, offset);
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}
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vui->nal_hrd_parameters_present_flag = get_bit(src, offset);
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if (vui->nal_hrd_parameters_present_flag)
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if (!parse_nal_hrd(
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&vui->nal_hrd_parameters,
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&this->vui_nal_hrd_parameters_cpb,
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&this->vui_nal_hrd_parameters_cpb_size,
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src,
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size,
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offset))
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return false;
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vui->vcl_hrd_parameters_present_flag = get_bit(src, offset);
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if (vui->vcl_hrd_parameters_present_flag)
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if (!parse_nal_hrd(
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&vui->vcl_hrd_parameters,
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&this->vui_vcl_hrd_parameters_cpb,
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&this->vui_vcl_hrd_parameters_cpb_size,
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src,
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size,
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offset))
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return false;
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if (vui->nal_hrd_parameters_present_flag || vui->vcl_hrd_parameters_present_flag)
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vui->low_delay_hrd_flag = get_bit(src, offset);
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vui->pic_struct_present_flag = get_bit(src, offset);
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vui->bitstream_restriction_flag = get_bit(src, offset);
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if (vui->bitstream_restriction_flag)
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{
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vui->motion_vectors_over_pic_boundaries_flag = get_bit(src, offset);
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vui->max_bytes_per_pic_denom = decode_u_golomb(src, offset);
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vui->max_bits_per_mb_denom = decode_u_golomb(src, offset);
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vui->log2_max_mv_length_horizontal = decode_u_golomb(src, offset);
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vui->log2_max_mv_length_vertical = decode_u_golomb(src, offset);
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vui->num_reorder_frames = decode_u_golomb(src, offset);
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vui->max_dec_frame_buffering = decode_u_golomb(src, offset);
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}
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return true;
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}
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static bool parse_nal_trailing_bits(NAL this, const uint8_t * src, size_t size, size_t * const offset)
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{
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if (!get_bit(src, offset))
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{
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DEBUG_ERROR("Missing stop bit");
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return false;
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}
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// byte align
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*offset = (*offset + 0x7) & ~0x7;
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return true;
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}
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static bool parse_nal_sps(NAL this, const uint8_t * src, size_t size, size_t * const offset)
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{
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this->sps_valid = false;
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memset(&this->sps, 0, sizeof(this->sps));
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this->sps.profile_idc = get_bits(src, offset, 8);
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if ((this->sps.profile_idc != IDC_PROFILE_BASELINE) &&
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(this->sps.profile_idc != IDC_PROFILE_MAIN ) &&
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(this->sps.profile_idc != IDC_PROFILE_EXTENDED) &&
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(this->sps.profile_idc != IDC_PROFILE_HP ) &&
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(this->sps.profile_idc != IDC_PROFILE_Hi10P ) &&
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(this->sps.profile_idc != IDC_PROFILE_Hi422 ) &&
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(this->sps.profile_idc != IDC_PROFILE_Hi444 ) &&
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(this->sps.profile_idc != IDC_PROFILE_CAVLC444))
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{
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DEBUG_ERROR("Invalid profile IDC (%d) encountered", this->sps.profile_idc);
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return false;
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}
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this->sps.constraint_set_flags[0] = get_bit(src, offset);
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this->sps.constraint_set_flags[1] = get_bit(src, offset);
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this->sps.constraint_set_flags[2] = get_bit(src, offset);
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*offset += 5;
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this->sps.level_idc = get_bits(src, offset, 8);
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this->sps.seq_parameter_set_id = decode_u_golomb(src, offset);
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if ((this->sps.profile_idc == IDC_PROFILE_HP ) ||
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(this->sps.profile_idc == IDC_PROFILE_Hi10P ) ||
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(this->sps.profile_idc == IDC_PROFILE_Hi422 ) ||
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(this->sps.profile_idc == IDC_PROFILE_Hi444 ) ||
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(this->sps.profile_idc == IDC_PROFILE_CAVLC444))
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{
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this->sps.chroma_format_idc = decode_u_golomb(src, offset);
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if (this->sps.chroma_format_idc == IDC_CHROMA_FORMAT_YUV444)
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this->sps.seperate_colour_plane_flag = get_bit(src, offset);
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this->sps.bit_depth_luma_minus8 = decode_u_golomb(src, offset);
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this->sps.bit_depth_chroma_minus8 = decode_u_golomb(src, offset);
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this->sps.lossless_qpprime_y_zero_flag = get_bit(src, offset);
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this->sps.seq_scaling_matrix_present_flag = get_bit(src, offset);
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if (this->sps.seq_scaling_matrix_present_flag)
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{
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const int cnt = this->sps.chroma_format_idc == IDC_CHROMA_FORMAT_YUV444 ? 12 : 8;
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for(int i = 0; i < cnt; ++i)
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this->sps.seq_scaling_list_present_flag[i] = get_bit(src, offset);
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}
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}
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else
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this->sps.chroma_format_idc = IDC_CHROMA_FORMAT_YUV420;
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this->sps.log2_max_frame_num_minus4 = decode_u_golomb(src, offset);
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this->sps.pic_order_cnt_type = decode_u_golomb(src, offset);
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if (this->sps.pic_order_cnt_type == 0)
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this->sps.log2_max_pic_order_cnt_lsb_minus4 = decode_u_golomb(src, offset);
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else
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{
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if (this->sps.pic_order_cnt_type == 1)
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{
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this->sps.delta_pic_order_always_zero_flag = get_bit(src, offset);
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this->sps.offset_for_non_ref_pic = decode_s_golomb(src, offset);
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this->sps.offset_for_top_to_bottom_field = decode_s_golomb(src, offset);
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this->sps.num_ref_frames_in_pic_order_cnt_cycle = decode_u_golomb(src, offset);
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if (this->sps.num_ref_frames_in_pic_order_cnt_cycle > this->sps_num_ref_frames_in_pic_order_cnt_cycle)
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{
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this->sps_offset_for_ref_frame = realloc(
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this->sps_offset_for_ref_frame,
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this->sps.num_ref_frames_in_pic_order_cnt_cycle * sizeof(int32_t)
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);
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this->sps_num_ref_frames_in_pic_order_cnt_cycle = this->sps.num_ref_frames_in_pic_order_cnt_cycle;
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}
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this->sps.offset_for_ref_frame = this->sps_offset_for_ref_frame;
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for(uint32_t i = 0; i < this->sps.num_ref_frames_in_pic_order_cnt_cycle; ++i)
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this->sps.offset_for_ref_frame[i] = decode_s_golomb(src, offset);
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}
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}
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this->sps.num_ref_frames = decode_u_golomb(src, offset);
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this->sps.gaps_in_frame_num_value_allowed_flag = get_bit(src, offset);
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this->sps.pic_width_in_mbs_minus1 = decode_u_golomb(src, offset);
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this->sps.pic_height_in_map_units_minus1 = decode_u_golomb(src, offset);
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this->sps.frame_mbs_only_flag = get_bit(src, offset);
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if (!this->sps.frame_mbs_only_flag)
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this->sps.mb_adaptive_frame_field_flag = get_bit(src, offset);
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this->sps.direct_8x8_inference_flag = get_bit(src, offset);
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this->sps.frame_cropping_flag = get_bit(src, offset);
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if (this->sps.frame_cropping_flag)
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{
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this->sps.frame_crop_left_offset = decode_u_golomb(src, offset);
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this->sps.frame_crop_right_offset = decode_u_golomb(src, offset);
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this->sps.frame_crop_top_offset = decode_u_golomb(src, offset);
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this->sps.frame_crop_bottom_offset = decode_u_golomb(src, offset);
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}
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this->sps.vui_parameters_present_flag = get_bit(src, offset);
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#ifdef DEBUG_NAL
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DEBUG_INFO("SPS\n"
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"profile_idc : %u\n"
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"constraint_set_flags : %u %u %u\n"
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"level_idc : %u\n"
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"sec_parameter_set_id : %u\n"
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"chroma_format_idc : %u\n"
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"seperate_colour_plane_flag : %u\n"
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"bit_depth_luma_minus8 : %u\n"
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"bit_depth_chroma_minus8 : %u\n"
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"lossless_qpprime_y_zero_flag : %u\n"
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"seq_scaling_matrix_present_flag : %u\n"
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"log2_max_frame_num_minus4 : %u\n"
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"pic_order_cnt_type : %u\n"
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"log2_max_pic_order_cnt_lsb_minus4 : %u\n"
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"delta_pic_order_always_zero_flag : %u\n"
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"offset_for_non_ref_pic : %d\n"
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"offset_for_top_to_bottom_field : %d\n"
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"num_ref_frames_in_pic_order_cnt_cycle: %u\n"
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"num_ref_frames : %u\n"
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"gaps_in_frame_num_value_allowed_flag : %u\n"
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"pic_width_in_mbs_minus1 : %3u (%u)\n"
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"pic_height_in_map_units_minus1 : %3u (%u)\n"
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"frame_mbs_only_flag : %u\n"
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"mb_adaptive_frame_field_flag : %u\n"
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"direct_8x8_inference_flag : %u\n"
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"frame_cropping_flag : %u\n"
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"frame_crop_left_offset : %u\n"
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"frame_crop_right_offset : %u\n"
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"frame_crop_top_offset : %u\n"
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"frame_crop_bottom_offset : %u\n"
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"vui_parameters_present_flag : %u",
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this->sps.profile_idc,
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this->sps.constraint_set_flags[0],
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this->sps.constraint_set_flags[1],
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this->sps.constraint_set_flags[2],
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this->sps.level_idc,
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this->sps.seq_parameter_set_id,
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this->sps.chroma_format_idc,
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this->sps.seperate_colour_plane_flag,
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this->sps.bit_depth_luma_minus8,
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this->sps.bit_depth_chroma_minus8,
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this->sps.lossless_qpprime_y_zero_flag,
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this->sps.seq_scaling_matrix_present_flag,
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this->sps.log2_max_frame_num_minus4,
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this->sps.pic_order_cnt_type,
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this->sps.log2_max_pic_order_cnt_lsb_minus4,
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this->sps.delta_pic_order_always_zero_flag,
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this->sps.offset_for_non_ref_pic,
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this->sps.offset_for_top_to_bottom_field,
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this->sps.num_ref_frames_in_pic_order_cnt_cycle,
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this->sps.num_ref_frames,
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this->sps.gaps_in_frame_num_value_allowed_flag,
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this->sps.pic_width_in_mbs_minus1 , (this->sps.pic_width_in_mbs_minus1 + 1) * 16,
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this->sps.pic_height_in_map_units_minus1, (this->sps.pic_height_in_map_units_minus1 + 1) * 16,
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this->sps.frame_mbs_only_flag,
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this->sps.mb_adaptive_frame_field_flag,
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this->sps.direct_8x8_inference_flag,
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this->sps.frame_cropping_flag,
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this->sps.frame_crop_left_offset,
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this->sps.frame_crop_right_offset,
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this->sps.frame_crop_top_offset,
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this->sps.frame_crop_bottom_offset,
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this->sps.vui_parameters_present_flag
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);
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#endif
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if (this->sps.vui_parameters_present_flag)
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{
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if (!parse_nal_vui(this, src, size, offset))
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return false;
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this->vui_valid = true;
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}
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if (!parse_nal_trailing_bits(this, src, size, offset))
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return false;
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this->sps_valid = true;
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return true;
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}
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|
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static bool parse_nal_pps(NAL this, const uint8_t * src, size_t size, size_t * const offset)
|
|
{
|
|
NAL_PPS * pps = &this->pps;
|
|
this->pps_valid = false;
|
|
memset(pps, 0, sizeof(NAL_PPS));
|
|
|
|
pps->pic_parameter_set_id = decode_u_golomb(src, offset);
|
|
pps->seq_parameter_set_id = decode_u_golomb(src, offset);
|
|
pps->entropy_coding_mode_flag = get_bit(src, offset);
|
|
pps->pic_order_present_flag = get_bit(src, offset);
|
|
pps->num_slice_groups_minus1 = decode_u_golomb(src, offset);
|
|
|
|
if (pps->num_slice_groups_minus1 > 0)
|
|
{
|
|
pps->slice_group_map_type = decode_u_golomb(src, offset);
|
|
if (pps->slice_group_map_type == 0 || pps->slice_group_map_type == 2)
|
|
{
|
|
if (this->pps_slice_groups_size < pps->num_slice_groups_minus1 + 1)
|
|
{
|
|
this->pps_slice_groups_size = pps->num_slice_groups_minus1 + 1;
|
|
this->pps_slice_groups = (NAL_SLICE_GROUP *)realloc(
|
|
this->pps_slice_groups, this->pps_slice_groups_size * sizeof(NAL_SLICE_GROUP));
|
|
}
|
|
pps->slice_groups = this->pps_slice_groups;
|
|
memset(pps->slice_groups, 0, (pps->num_slice_groups_minus1 + 1) * sizeof(NAL_SLICE_GROUP));
|
|
|
|
if (pps->slice_group_map_type == 0)
|
|
{
|
|
for(uint32_t group = 0; group <= pps->num_slice_groups_minus1; ++group)
|
|
pps->slice_groups[group].t0.run_length_minus1 = decode_u_golomb(src, offset);
|
|
}
|
|
else
|
|
{
|
|
for(uint32_t group = 0; group < pps->num_slice_groups_minus1; ++group)
|
|
{
|
|
pps->slice_groups[group].t2.top_left = decode_u_golomb(src, offset);
|
|
pps->slice_groups[group].t2.bottom_right = decode_u_golomb(src, offset);
|
|
}
|
|
}
|
|
}
|
|
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 = get_bit(src, offset);
|
|
pps->slice_group_change_rate_minus1 = decode_u_golomb(src, offset);
|
|
}
|
|
else
|
|
{
|
|
if (pps->slice_group_map_type == 6)
|
|
{
|
|
pps->pic_size_in_map_units_minus1 = decode_u_golomb(src, offset);
|
|
|
|
uint32_t slice_groups = pps->pic_size_in_map_units_minus1 + 1;
|
|
uint32_t bits = 0;
|
|
if ((slice_groups & (slice_groups - 1)) != 0)
|
|
++slice_groups;
|
|
|
|
while(slice_groups > 0)
|
|
{
|
|
slice_groups >>= 1;
|
|
++bits;
|
|
}
|
|
|
|
if (this->pps_slice_group_id_size < pps->pic_size_in_map_units_minus1 + 1)
|
|
{
|
|
this->pps_slice_group_id_size = pps->pic_size_in_map_units_minus1 + 1;
|
|
this->pps_slice_group_id = realloc(this->pps_slice_group_id,
|
|
this->pps_slice_group_id_size * sizeof(uint32_t));
|
|
}
|
|
pps->slice_group_id = this->pps_slice_group_id;
|
|
|
|
for(uint32_t group = 0; group <= pps->pic_size_in_map_units_minus1; ++group)
|
|
pps->slice_group_id[group] = get_bits(src, offset, bits);
|
|
}
|
|
else
|
|
{
|
|
DEBUG_ERROR("Invalid slice_group_map_type: %d", pps->slice_group_map_type);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pps->num_ref_idx_l0_active_minus1 = decode_u_golomb(src, offset);
|
|
pps->num_ref_idx_l1_active_minus1 = decode_u_golomb(src, offset);
|
|
pps->weighted_pred_flag = get_bit(src, offset);
|
|
pps->weighted_bipred_idc = get_bits(src, offset, 2);
|
|
pps->pic_init_qp_minus26 = decode_s_golomb(src, offset);
|
|
pps->pic_init_qs_minus26 = decode_s_golomb(src, offset);
|
|
pps->chroma_qp_index_offset = decode_s_golomb(src, offset);
|
|
pps->deblocking_filter_control_present_flag = get_bit(src, offset);
|
|
pps->constrained_intra_pred_flag = get_bit(src, offset);
|
|
pps->redundant_pic_cnt_present_flag = get_bit(src, offset);
|
|
|
|
if (pps->num_ref_idx_l0_active_minus1 + 1 > this->slice_pred_weight_table_l0_size)
|
|
{
|
|
this->slice_pred_weight_table_l0_size = pps->num_ref_idx_l0_active_minus1 + 1;
|
|
this->slice_pred_weight_table_l0 = realloc(this->slice_pred_weight_table_l0,
|
|
this->slice_pred_weight_table_l0_size * sizeof(NAL_PW_TABLE_L));
|
|
}
|
|
|
|
if (pps->num_ref_idx_l1_active_minus1 + 1 > this->slice_pred_weight_table_l1_size)
|
|
{
|
|
this->slice_pred_weight_table_l1_size = pps->num_ref_idx_l1_active_minus1 + 1;
|
|
this->slice_pred_weight_table_l1 = realloc(this->slice_pred_weight_table_l1,
|
|
this->slice_pred_weight_table_l1_size * sizeof(NAL_PW_TABLE_L));
|
|
}
|
|
|
|
const bool extraData = get_bit(src, offset) == 0;
|
|
--*offset;
|
|
|
|
if (extraData)
|
|
{
|
|
pps->transform_8x8_mode_flag = get_bit(src, offset);
|
|
pps->pic_scaling_matrix_present_flag = get_bit(src, offset);
|
|
if (pps->pic_scaling_matrix_present_flag)
|
|
{
|
|
//TODO
|
|
}
|
|
pps->second_chroma_qp_index_offset = decode_s_golomb(src, offset);
|
|
}
|
|
|
|
#ifdef DEBUG_NAL
|
|
DEBUG_INFO("PPS:\n"
|
|
"pic_parameter_set_id : %u\n"
|
|
"seq_parameter_set_id : %u\n"
|
|
"entropy_coding_mode_flag : %u\n"
|
|
"pic_order_present_flag : %u\n"
|
|
"num_slice_groups_minus1 : %u\n"
|
|
"slice_group_map_type : %u\n"
|
|
"slice_group_change_direction_flag : %u\n"
|
|
"slice_group_change_rate_minus1 : %u\n"
|
|
"pic_size_in_map_units_minus1 : %u\n"
|
|
"num_ref_idx_l0_active_minus1 : %u\n"
|
|
"num_ref_idx_l1_active_minus1 : %u\n"
|
|
"weighted_pred_flag : %u\n"
|
|
"weighted_bipred_idc : %u\n"
|
|
"pic_init_qp_minus26 : %d\n"
|
|
"pic_init_qs_minus26 : %d\n"
|
|
"chroma_qp_index_offset : %d\n"
|
|
"deblocking_filter_control_present_flag: %u\n"
|
|
"constrained_intra_pred_flag : %u\n"
|
|
"redundant_pic_cnt_present_flag : %u\n"
|
|
"transform_8x8_mode_flag : %u\n"
|
|
"pic_scaling_matrix_present_flag : %u\n"
|
|
"second_chroma_qp_index_offset : %u",
|
|
pps->pic_parameter_set_id,
|
|
pps->seq_parameter_set_id,
|
|
pps->entropy_coding_mode_flag,
|
|
pps->pic_order_present_flag,
|
|
pps->num_slice_groups_minus1,
|
|
pps->slice_group_map_type,
|
|
pps->slice_group_change_direction_flag,
|
|
pps->slice_group_change_rate_minus1,
|
|
pps->pic_size_in_map_units_minus1,
|
|
pps->num_ref_idx_l0_active_minus1,
|
|
pps->num_ref_idx_l1_active_minus1,
|
|
pps->weighted_pred_flag,
|
|
pps->weighted_bipred_idc,
|
|
pps->pic_init_qp_minus26,
|
|
pps->pic_init_qs_minus26,
|
|
pps->chroma_qp_index_offset,
|
|
pps->deblocking_filter_control_present_flag,
|
|
pps->constrained_intra_pred_flag,
|
|
pps->redundant_pic_cnt_present_flag,
|
|
pps->transform_8x8_mode_flag,
|
|
pps->pic_scaling_matrix_present_flag,
|
|
pps->second_chroma_qp_index_offset
|
|
);
|
|
#endif
|
|
|
|
if (!parse_nal_trailing_bits(this, src, size, offset))
|
|
return false;
|
|
|
|
this->pps_valid = true;
|
|
return true;
|
|
}
|
|
|
|
static bool parse_nal_ref_pic_list_reordering(NAL this, const uint8_t * src, size_t size, size_t * const offset)
|
|
{
|
|
NAL_SLICE * slice = &this->slice;
|
|
NAL_RPL_REORDER * rpl = &this->slice.ref_pic_list_reordering;
|
|
|
|
if (slice->slice_type != NAL_SLICE_TYPE_I && slice->slice_type != NAL_SLICE_TYPE_SI)
|
|
{
|
|
rpl->ref_pic_list_reordering_flag_l0 = get_bit(src, offset);
|
|
if(rpl->ref_pic_list_reordering_flag_l0)
|
|
{
|
|
int index = 0;
|
|
NAL_RPL_REORDER_L * l;
|
|
do
|
|
{
|
|
if (index > 2)
|
|
{
|
|
DEBUG_ERROR("too many reorder records");
|
|
return false;
|
|
}
|
|
|
|
l = &rpl->l0[index++];
|
|
l->valid = true;
|
|
l->reordering_of_pic_nums_idc = decode_u_golomb(src, offset);
|
|
if (l->reordering_of_pic_nums_idc == 0 || l->reordering_of_pic_nums_idc == 1)
|
|
l->abs_diff_pic_num_minus1 = decode_u_golomb(src, offset);
|
|
else
|
|
if (l->reordering_of_pic_nums_idc == 2)
|
|
l->long_term_pic_num = decode_u_golomb(src, offset);
|
|
}
|
|
while(l->reordering_of_pic_nums_idc != 3);
|
|
}
|
|
}
|
|
|
|
if (slice->slice_type == NAL_SLICE_TYPE_B)
|
|
{
|
|
rpl->ref_pic_list_reordering_flag_l1 = get_bit(src, offset);
|
|
if (rpl->ref_pic_list_reordering_flag_l1)
|
|
{
|
|
int index = 0;
|
|
NAL_RPL_REORDER_L * l;
|
|
do
|
|
{
|
|
if (index > 2)
|
|
{
|
|
DEBUG_ERROR("too many reorder records");
|
|
return false;
|
|
}
|
|
|
|
l = &rpl->l1[index++];
|
|
l->valid = true;
|
|
l->reordering_of_pic_nums_idc = decode_u_golomb(src, offset);
|
|
if (l->reordering_of_pic_nums_idc == 0 || l->reordering_of_pic_nums_idc == 1)
|
|
l->abs_diff_pic_num_minus1 = decode_u_golomb(src, offset);
|
|
else
|
|
if (l->reordering_of_pic_nums_idc == 2)
|
|
l->long_term_pic_num = decode_u_golomb(src, offset);
|
|
}
|
|
while(l->reordering_of_pic_nums_idc != 3);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool parse_pred_weight_table(NAL this, const uint8_t * src, size_t size, size_t * const offset)
|
|
{
|
|
NAL_SLICE * slice = &this->slice;
|
|
NAL_PW_TABLE * tbl = &this->slice.pred_weight_table;
|
|
|
|
tbl->luma_log2_weight_denom = decode_u_golomb(src, offset);
|
|
if (this->sps.chroma_format_idc != 0)
|
|
tbl->chroma_log2_weight_denom = decode_u_golomb(src, offset);
|
|
|
|
for(uint32_t i = 0; i <= this->pps.num_ref_idx_l0_active_minus1; ++i)
|
|
{
|
|
NAL_PW_TABLE_L * l = &tbl->l0[i];
|
|
|
|
tbl->luma_weight_flag[0] = get_bit(src, offset);
|
|
if (tbl->luma_weight_flag[0])
|
|
{
|
|
l->luma_weight = decode_s_golomb(src, offset);
|
|
l->luma_offset = decode_s_golomb(src, offset);
|
|
}
|
|
|
|
if (this->sps.chroma_format_idc != 0)
|
|
{
|
|
tbl->chroma_weight_flag[0] = get_bit(src, offset);
|
|
if (tbl->chroma_weight_flag[0])
|
|
for(int j = 0; j < 2; ++j)
|
|
{
|
|
l->chroma_weight[j] = decode_s_golomb(src, offset);
|
|
l->chroma_offset[j] = decode_s_golomb(src, offset);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (slice->slice_type == NAL_SLICE_TYPE_B)
|
|
{
|
|
for(uint32_t i = 0; i <= this->pps.num_ref_idx_l1_active_minus1; ++i)
|
|
{
|
|
NAL_PW_TABLE_L * l = &tbl->l1[i];
|
|
|
|
tbl->luma_weight_flag[1] = get_bit(src, offset);
|
|
if (tbl->luma_weight_flag[1])
|
|
{
|
|
l->luma_weight = decode_s_golomb(src, offset);
|
|
l->luma_offset = decode_s_golomb(src, offset);
|
|
}
|
|
|
|
if (this->sps.chroma_format_idc != 0)
|
|
{
|
|
tbl->chroma_weight_flag[1] = get_bit(src, offset);
|
|
if (tbl->chroma_weight_flag[1])
|
|
for(int j = 0; j < 2; ++j)
|
|
{
|
|
l->chroma_weight[j] = decode_s_golomb(src, offset);
|
|
l->chroma_offset[j] = decode_s_golomb(src, offset);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool parse_dec_ref_pic_marking(
|
|
NAL this,
|
|
const uint8_t ref_unit_type,
|
|
const uint8_t * src,
|
|
size_t size,
|
|
size_t * const offset
|
|
)
|
|
{
|
|
NAL_RP_MARKING * m = &this->slice.dec_ref_pic_marking;
|
|
if (ref_unit_type == 5)
|
|
{
|
|
m->no_output_of_prior_pics_flag = get_bit(src, offset);
|
|
m->long_term_reference_flag = get_bit(src, offset);
|
|
}
|
|
else
|
|
{
|
|
m->adaptive_ref_pic_marking_mode_flag = get_bit(src, offset);
|
|
if (m->adaptive_ref_pic_marking_mode_flag)
|
|
{
|
|
uint32_t op;
|
|
do
|
|
{
|
|
op = decode_u_golomb(src, offset);
|
|
if (op == 1 || op == 3)
|
|
m->difference_of_pic_nums_minus1 = decode_u_golomb(src, offset);
|
|
|
|
if (op == 2)
|
|
m->long_term_pic_num = decode_u_golomb(src, offset);
|
|
|
|
if (op == 3 || op == 6)
|
|
m->long_term_frame_idx = decode_u_golomb(src, offset);
|
|
|
|
if (op == 4)
|
|
m->max_long_term_frame_idx_plus1 = decode_u_golomb(src, offset);
|
|
|
|
} while (op != 0);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool parse_nal_coded_slice(
|
|
NAL this,
|
|
const uint8_t ref_idc,
|
|
const uint8_t ref_unit_type,
|
|
const uint8_t * src,
|
|
size_t size,
|
|
size_t * const offset
|
|
)
|
|
{
|
|
if (!this->sps_valid || !this->pps_valid)
|
|
return false;
|
|
|
|
NAL_SLICE * slice = &this->slice;
|
|
memset(slice, 0, sizeof(NAL_SLICE));
|
|
|
|
slice->nal_ref_idc = ref_idc;
|
|
slice->first_mb_in_slice = decode_u_golomb(src, offset);
|
|
slice->slice_type = decode_u_golomb(src, offset);
|
|
slice->pic_parameter_set_id = decode_u_golomb(src, offset);
|
|
slice->frame_num = get_bits(src, offset, this->sps.log2_max_frame_num_minus4 + 4);
|
|
slice->pred_weight_table.l0 = this->slice_pred_weight_table_l0;
|
|
slice->pred_weight_table.l1 = this->slice_pred_weight_table_l1;
|
|
|
|
if (!this->sps.frame_mbs_only_flag)
|
|
{
|
|
slice->field_pic_flag = get_bit(src, offset);
|
|
if (slice->field_pic_flag)
|
|
slice->bottom_field_flag = get_bit(src, offset);
|
|
}
|
|
|
|
if (ref_unit_type == 5)
|
|
slice->idr_pic_id = decode_u_golomb(src, offset);
|
|
|
|
if (this->sps.pic_order_cnt_type == 0)
|
|
{
|
|
slice->pic_order_cnt_lsb = get_bits(src, offset, this->sps.log2_max_pic_order_cnt_lsb_minus4 + 4);
|
|
if (this->pps.pic_order_present_flag && !slice->field_pic_flag)
|
|
slice->delta_pic_order_cnt_bottom = decode_s_golomb(src, offset);
|
|
}
|
|
else
|
|
if (this->sps.pic_order_cnt_type == 1 && !this->sps.delta_pic_order_always_zero_flag)
|
|
{
|
|
slice->delta_pic_order_cnt[0] = decode_s_golomb(src, offset);
|
|
if (this->pps.pic_order_present_flag && !slice->field_pic_flag)
|
|
slice->delta_pic_order_cnt[1] = decode_s_golomb(src, offset);
|
|
}
|
|
|
|
if (this->pps.redundant_pic_cnt_present_flag)
|
|
slice->redundant_pic_cnt = decode_u_golomb(src, offset);
|
|
|
|
if (slice->slice_type == NAL_SLICE_TYPE_B)
|
|
slice->direct_spatial_mv_pred_flag = get_bit(src, offset);
|
|
|
|
if (slice->slice_type == NAL_SLICE_TYPE_P ||
|
|
slice->slice_type == NAL_SLICE_TYPE_SP ||
|
|
slice->slice_type == NAL_SLICE_TYPE_B)
|
|
{
|
|
slice->num_ref_idx_active_override_flag = get_bit(src, offset);
|
|
if (slice->num_ref_idx_active_override_flag)
|
|
{
|
|
slice->num_ref_idx_l0_active_minus1 = decode_u_golomb(src, offset);
|
|
if (slice->slice_type == NAL_SLICE_TYPE_B)
|
|
slice->num_ref_idx_l1_active_minus1 = decode_u_golomb(src, offset);
|
|
}
|
|
}
|
|
|
|
if (!parse_nal_ref_pic_list_reordering(this, src, size, offset))
|
|
return false;
|
|
|
|
if ((this->pps.weighted_pred_flag && (slice->slice_type == NAL_SLICE_TYPE_P || slice->slice_type == NAL_SLICE_TYPE_SP)) ||
|
|
(this->pps.weighted_bipred_idc == 1 && slice->slice_type == NAL_SLICE_TYPE_B))
|
|
{
|
|
if (!parse_pred_weight_table(this, src, size, offset))
|
|
return false;
|
|
}
|
|
|
|
if (ref_idc != 0)
|
|
if (!parse_dec_ref_pic_marking(this, ref_unit_type, src, size, offset))
|
|
return false;
|
|
|
|
if (this->pps.entropy_coding_mode_flag && slice->slice_type != NAL_SLICE_TYPE_I && slice->slice_type != NAL_SLICE_TYPE_SI)
|
|
slice->cabac_init_idc = decode_u_golomb(src, offset);
|
|
|
|
slice->slice_qp_delta = decode_s_golomb(src, offset);
|
|
|
|
if (slice->slice_type == NAL_SLICE_TYPE_SP || slice->slice_type == NAL_SLICE_TYPE_SI)
|
|
{
|
|
if (slice->slice_type == NAL_SLICE_TYPE_SP)
|
|
slice->sp_for_switch_flag = get_bit(src, offset);
|
|
slice->slice_qs_delta = decode_s_golomb(src, offset);
|
|
}
|
|
|
|
if (this->pps.deblocking_filter_control_present_flag)
|
|
{
|
|
slice->disable_deblocking_filter_idc = decode_u_golomb(src, offset);
|
|
if (slice->disable_deblocking_filter_idc != 1)
|
|
{
|
|
slice->slice_alpha_c0_offset_div2 = decode_s_golomb(src, offset);
|
|
slice->slice_beta_offset_div2 = decode_s_golomb(src, offset);
|
|
}
|
|
}
|
|
|
|
if (this->pps.num_slice_groups_minus1 > 0 && this->pps.slice_group_map_type >= 3 && this->pps.slice_group_map_type <= 5)
|
|
slice->slice_group_change_cycle = decode_u_golomb(src, offset);
|
|
|
|
#ifdef DEBUG_NAL
|
|
DEBUG_INFO("SLICE:\n"
|
|
"first_mb_in_slice : %u\n"
|
|
"slice_type : %u\n"
|
|
"pic_parameter_set_id : %u\n"
|
|
"frame_num : %u\n"
|
|
"field_pic_flag : %u\n"
|
|
"bottom_field_flag : %u\n"
|
|
"idr_pic_id : %u\n"
|
|
"pic_order_cnt_lsb : %u\n"
|
|
"delta_pic_order_cnt_bottom : %d\n"
|
|
"delta_pic_order_cnt[0] : %d\n"
|
|
"delta_pic_order_cnt[1] : %d\n"
|
|
"redundant_pic_cnt : %u\n"
|
|
"direct_spatial_mv_pred_flag : %u\n"
|
|
"num_ref_idx_active_override_flag: %u\n"
|
|
"num_ref_idx_l0_active_minus1 : %u\n"
|
|
"num_ref_idx_l1_active_minus1 : %u",
|
|
slice->first_mb_in_slice,
|
|
slice->slice_type,
|
|
slice->pic_parameter_set_id,
|
|
slice->frame_num,
|
|
slice->field_pic_flag,
|
|
slice->bottom_field_flag,
|
|
slice->idr_pic_id,
|
|
slice->pic_order_cnt_lsb,
|
|
slice->delta_pic_order_cnt_bottom,
|
|
slice->delta_pic_order_cnt[0],
|
|
slice->delta_pic_order_cnt[1],
|
|
slice->redundant_pic_cnt,
|
|
slice->direct_spatial_mv_pred_flag,
|
|
slice->num_ref_idx_active_override_flag,
|
|
slice->num_ref_idx_l0_active_minus1,
|
|
slice->num_ref_idx_l1_active_minus1
|
|
);
|
|
#endif
|
|
|
|
if (!parse_nal_trailing_bits(this, src, size, offset))
|
|
return false;
|
|
|
|
this->slice_valid = true;
|
|
return true;
|
|
}
|
|
|
|
bool nal_parse(NAL this, const uint8_t * src, size_t size, size_t * seek)
|
|
{
|
|
#ifdef DEBUG_NAL
|
|
static FILE * fd = NULL;
|
|
if (!fd)
|
|
fd = fopen("/tmp/stream.h264", "w");
|
|
fwrite(src, size, 1, fd);
|
|
fflush(fd);
|
|
#endif
|
|
|
|
*seek = 0;
|
|
for(size_t i = 0; i < size - 4; ++i)
|
|
{
|
|
if (src[i++] != 0 || src[i++] != 0)
|
|
break;
|
|
|
|
if (src[i] == 0)
|
|
++i;
|
|
|
|
if (src[i++] != 1)
|
|
break;
|
|
|
|
size_t offset = i << 3;
|
|
#ifdef DEBUG_NAL
|
|
DEBUG_INFO("nal @ %lu (%lu)", *seek, offset);
|
|
#endif
|
|
|
|
// ensure the forbidden zero bit is not set
|
|
if (get_bit(src, &offset) != 0)
|
|
{
|
|
DEBUG_ERROR("forbidden_zero_bit is set");
|
|
return false;
|
|
}
|
|
|
|
uint8_t ref_idc = get_bits(src, &offset, 2);
|
|
uint8_t ref_unit_type = get_bits(src, &offset, 5);
|
|
DEBUG_INFO("ref idc: %d, ref unit type: %d", ref_idc, ref_unit_type);
|
|
|
|
switch(ref_unit_type)
|
|
{
|
|
case NAL_TYPE_CODED_SLICE_IDR:
|
|
case NAL_TYPE_CODED_SLICE_NON_IDR:
|
|
case NAL_TYPE_CODED_SLICE_AUX:
|
|
if (!parse_nal_coded_slice(this, ref_idc, ref_unit_type, src, size, &offset))
|
|
return false;
|
|
break;
|
|
|
|
case NAL_TYPE_AUD:
|
|
{
|
|
this->primary_pic_type = get_bits(src, &offset, 3);
|
|
this->primary_pic_type_valid = true;
|
|
if (!parse_nal_trailing_bits(this, src, size, &offset))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case NAL_TYPE_SPS:
|
|
if (!parse_nal_sps(this, src, size, &offset))
|
|
return false;
|
|
break;
|
|
|
|
case NAL_TYPE_PPS:
|
|
if (!parse_nal_pps(this, src, size, &offset))
|
|
return false;
|
|
break;
|
|
|
|
default:
|
|
DEBUG_ERROR("Unknown NAL ref unit type: %d", ref_unit_type);
|
|
return false;
|
|
}
|
|
|
|
i = offset >> 3;
|
|
*seek = i;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool nal_get_sps(NAL this, const NAL_SPS ** sps)
|
|
{
|
|
if (!this->sps_valid)
|
|
return false;
|
|
*sps = &this->sps;
|
|
return true;
|
|
}
|
|
|
|
bool nal_get_primary_picture_type(NAL this, uint8_t * pic_type)
|
|
{
|
|
if (!this->primary_pic_type_valid)
|
|
return false;
|
|
*pic_type = this->primary_pic_type;
|
|
return true;
|
|
}
|
|
|
|
bool nal_get_pps(NAL this, const NAL_PPS ** pps)
|
|
{
|
|
if (!this->pps_valid)
|
|
return false;
|
|
|
|
*pps = &this->pps;
|
|
return true;
|
|
}
|
|
|
|
bool nal_get_slice(NAL this, const NAL_SLICE ** slice)
|
|
{
|
|
if (!this->slice_valid)
|
|
return false;
|
|
|
|
*slice = &this->slice;
|
|
return true;
|
|
} |