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looking-glass/client/parsers/nal.h
Geoffrey McRae 8ccce5666c [client] nal: corrections to parsing logic
2018-01-06 13:40:31 +11:00

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/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#define NAL_TYPE_CODED_SLICE_NON_IDR 1
#define NAL_TYPE_CODED_SLICE_DATA_PARTITION_A 2
#define NAL_TYPE_CODED_SLICE_DATA_PARTITION_B 3
#define NAL_TYPE_CODED_SLICE_DATA_PARTITION_C 4
#define NAL_TYPE_CODED_SLICE_IDR 5
#define NAL_TYPE_SPS 7
#define NAL_TYPE_PPS 8
#define NAL_TYPE_AUD 9
#define NAL_TYPE_END_OF_SEQUENCE 10
#define NAL_TYPE_END_OF_STREAM 11
#define NAL_TYPE_CODED_SLICE_AUX 19
#define IDC_PROFILE_BASELINE 66
#define IDC_PROFILE_MAIN 77
#define IDC_PROFILE_EXTENDED 88
#define IDC_PROFILE_HP 100
#define IDC_PROFILE_Hi10P 110
#define IDC_PROFILE_Hi422 122
#define IDC_PROFILE_Hi444 244
#define IDC_PROFILE_CAVLC444 44
#define IDC_CHROMA_FORMAT_YUV400 0
#define IDC_CHROMA_FORMAT_YUV420 1
#define IDC_CHROMA_FORMAT_YVU422 2
#define IDC_CHROMA_FORMAT_YUV444 3
#define IDC_VUI_ASPECT_RATIO_EXTENDED_SAR 0xFF
#define NAL_PICTURE_TYPE_I 0
#define NAL_PICTURE_TYPE_P 1
#define NAL_PICTURE_TYPE_B 2
#define NAL_SLICE_TYPE_P 0
#define NAL_SLICE_TYPE_B 1
#define NAL_SLICE_TYPE_I 2
#define NAL_SLICE_TYPE_SP 3
#define NAL_SLICE_TYPE_SI 4
typedef struct NAL_SPS
{
uint8_t profile_idc;
uint8_t constraint_set_flags[3];
uint8_t level_idc;
uint32_t seq_parameter_set_id;
uint32_t chroma_format_idc;
uint8_t seperate_colour_plane_flag;
uint32_t bit_depth_luma_minus8;
uint32_t bit_depth_chroma_minus8;
uint8_t lossless_qpprime_y_zero_flag;
uint8_t seq_scaling_matrix_present_flag;
uint8_t seq_scaling_list_present_flag[12];
uint32_t log2_max_frame_num_minus4;
uint32_t pic_order_cnt_type;
uint32_t log2_max_pic_order_cnt_lsb_minus4;
uint8_t delta_pic_order_always_zero_flag;
int32_t offset_for_non_ref_pic;
int32_t offset_for_top_to_bottom_field;
uint32_t num_ref_frames_in_pic_order_cnt_cycle;
int32_t * offset_for_ref_frame;
uint32_t num_ref_frames;
uint8_t gaps_in_frame_num_value_allowed_flag;
uint32_t pic_width_in_mbs_minus1;
uint32_t pic_height_in_map_units_minus1;
uint8_t frame_mbs_only_flag;
uint8_t mb_adaptive_frame_field_flag;
uint8_t direct_8x8_inference_flag;
uint8_t frame_cropping_flag;
uint32_t frame_crop_left_offset;
uint32_t frame_crop_right_offset;
uint32_t frame_crop_top_offset;
uint32_t frame_crop_bottom_offset;
uint8_t vui_parameters_present_flag;
}
NAL_SPS;
typedef struct NAL_CPB
{
uint32_t bit_rate_value_minus1;
uint32_t cpb_size_value_minus1;
uint8_t cbr_flag;
}
NAL_CPB;
typedef struct NAL_HRD
{
uint32_t cpb_cnt_minus1;
uint8_t bit_rate_scale;
uint8_t cpb_size_scale;
uint8_t cpb_size_count;
NAL_CPB * cpb;
uint8_t initial_cpb_removal_delay_length_minus1;
uint8_t cpb_removal_delay_length_minus1;
uint8_t dpb_output_delay_length_minus1;
uint8_t time_offset_length;
}
NAL_HRD;
typedef struct NAL_VUI
{
uint8_t aspect_ratio_info_present_flag;
uint8_t aspect_ratio_idc;
uint16_t sar_width;
uint16_t sar_height;
uint8_t overscan_info_present_flag;
uint8_t overscan_appropriate_flag;
uint8_t video_signal_type_present_flag;
uint8_t video_format;
uint8_t video_full_range_flag;
uint8_t colour_description_present_flag;
uint8_t colour_primaries;
uint8_t transfer_characteristics;
uint8_t matrix_coefficients;
uint8_t chroma_loc_info_present_flag;
uint32_t chroma_sample_loc_type_top_field;
uint32_t chroma_sample_loc_type_bottom_field;
uint8_t timing_info_present_flag;
uint32_t num_units_in_tick;
uint32_t time_scale;
uint8_t fixed_frame_rate_flag;
uint8_t nal_hrd_parameters_present_flag;
NAL_HRD nal_hrd_parameters;
uint8_t vcl_hrd_parameters_present_flag;
NAL_HRD vcl_hrd_parameters;
uint8_t low_delay_hrd_flag;
uint8_t pic_struct_present_flag;
uint8_t bitstream_restriction_flag;
uint8_t motion_vectors_over_pic_boundaries_flag;
uint32_t max_bytes_per_pic_denom;
uint32_t max_bits_per_mb_denom;
uint32_t log2_max_mv_length_horizontal;
uint32_t log2_max_mv_length_vertical;
uint32_t num_reorder_frames;
uint32_t max_dec_frame_buffering;
}
NAL_VUI;
typedef struct NAL_SLICE_GROUP_T0
{
uint32_t run_length_minus1;
}
NAL_SLICE_GROUP_T0;
typedef struct NAL_SLICE_GROUP_T2
{
uint32_t top_left;
uint32_t bottom_right;
}
NAL_SLICE_GROUP_T2;
typedef union NAL_SLICE_GROUP
{
NAL_SLICE_GROUP_T0 t0;
NAL_SLICE_GROUP_T2 t2;
}
NAL_SLICE_GROUP;
typedef struct NAL_PPS
{
uint32_t pic_parameter_set_id;
uint32_t seq_parameter_set_id;
uint8_t entropy_coding_mode_flag;
uint8_t pic_order_present_flag;
uint32_t num_slice_groups_minus1;
NAL_SLICE_GROUP * slice_groups;
uint32_t slice_group_map_type;
uint8_t slice_group_change_direction_flag;
uint32_t slice_group_change_rate_minus1;
uint32_t pic_size_in_map_units_minus1;
uint32_t * slice_group_id;
uint32_t num_ref_idx_l0_active_minus1;
uint32_t num_ref_idx_l1_active_minus1;
uint8_t weighted_pred_flag;
uint8_t weighted_bipred_idc;
int32_t pic_init_qp_minus26;
int32_t pic_init_qs_minus26;
int32_t chroma_qp_index_offset;
uint8_t deblocking_filter_control_present_flag;
uint8_t constrained_intra_pred_flag;
uint8_t redundant_pic_cnt_present_flag;
uint8_t transform_8x8_mode_flag;
uint8_t pic_scaling_matrix_present_flag;
uint8_t pic_scaling_list_present_flag[6];
int32_t scaling_list_4x4[6];
int32_t scaling_list_8x8[2];
int32_t second_chroma_qp_index_offset;
}
NAL_PPS;
typedef struct NAL_RPL_REORDER_L
{
bool valid;
uint32_t reordering_of_pic_nums_idc;
uint32_t abs_diff_pic_num_minus1;
uint32_t long_term_pic_num;
}
NAL_RPL_REORDER_L;
typedef struct NAL_RPL_REORDER
{
uint8_t ref_pic_list_reordering_flag_l0;
NAL_RPL_REORDER_L l0[3];
uint8_t ref_pic_list_reordering_flag_l1;
NAL_RPL_REORDER_L l1[3];
}
NAL_RPL_REORDER;
typedef struct NAL_PW_TABLE_L
{
int32_t luma_weight;
int32_t luma_offset;
int32_t chroma_weight[2];
int32_t chroma_offset[2];
}
NAL_PW_TABLE_L;
typedef struct NAL_PW_TABLE
{
uint32_t luma_log2_weight_denom;
uint32_t chroma_log2_weight_denom;
uint8_t luma_weight_flag[2];
uint8_t chroma_weight_flag[2];
NAL_PW_TABLE_L * l0;
NAL_PW_TABLE_L * l1;
}
NAL_PW_TABLE;
typedef struct NAL_RP_MARKING
{
uint8_t no_output_of_prior_pics_flag;
uint8_t long_term_reference_flag;
uint8_t adaptive_ref_pic_marking_mode_flag;
uint32_t memory_management_control_operation;
uint32_t difference_of_pic_nums_minus1;
uint32_t long_term_pic_num;
uint32_t long_term_frame_idx;
uint32_t max_long_term_frame_idx_plus1;
}
NAL_RP_MARKING;
typedef struct NAL_SLICE
{
uint8_t nal_ref_idc;
uint32_t first_mb_in_slice;
uint32_t slice_type;
uint32_t pic_parameter_set_id;
uint32_t frame_num;
uint8_t field_pic_flag;
uint8_t bottom_field_flag;
uint32_t idr_pic_id;
uint32_t pic_order_cnt_lsb;
int32_t delta_pic_order_cnt_bottom;
int32_t delta_pic_order_cnt[2];
uint32_t redundant_pic_cnt;
uint8_t direct_spatial_mv_pred_flag;
uint8_t num_ref_idx_active_override_flag;
uint32_t num_ref_idx_l0_active_minus1;
uint32_t num_ref_idx_l1_active_minus1;
NAL_RPL_REORDER ref_pic_list_reordering;
NAL_PW_TABLE pred_weight_table;
NAL_RP_MARKING dec_ref_pic_marking;
uint32_t cabac_init_idc;
int32_t slice_qp_delta;
uint8_t sp_for_switch_flag;
int32_t slice_qs_delta;
uint32_t disable_deblocking_filter_idc;
int32_t slice_alpha_c0_offset_div2;
int32_t slice_beta_offset_div2;
uint32_t slice_group_change_cycle;
}
NAL_SLICE;
typedef struct NAL * NAL;
bool nal_initialize (NAL * ptr);
void nal_deinitialize(NAL this );
bool nal_parse (NAL this, const uint8_t * src, size_t size, size_t * seek);
bool nal_get_primary_picture_type(NAL this, uint8_t * pic_type);
bool nal_get_sps (NAL this, const NAL_SPS ** sps );
bool nal_get_pps (NAL this, const NAL_PPS ** pps );
bool nal_get_slice(NAL this, const NAL_SLICE ** slice);
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