def hrd_parameters(self, str_payload):
dict_info = self.dict_info
dict_info["cpb_cnt_minus1"] = pyUtils.read_ue(str_payload)
dict_info["bit_rate_scale"] = pyUtils.read_bits(str_payload, 4)
dict_info["cpb_size_scale"] = pyUtils.read_bits(str_payload, 4)
dict_info["bit_rate_value_minus1"] = [
0 for i in range(dict_info["cpb_cnt_minus1"] + 1)
]
dict_info["cpb_size_value_minus1"] = [
0 for i in range(dict_info["cpb_cnt_minus1"] + 1)
]
dict_info["cbr_flag"] = [
0 for i in range(dict_info["cpb_cnt_minus1"] + 1)
]
for schedse1idex in range(dict_info["cpb_cnt_minus1"] + 1):
dict_info["bit_rate_value_minus1"][schedse1idex] = pyUtils.read_ue(
str_payload)
dict_info["cpb_size_value_minus1"][schedse1idex] = pyUtils.read_ue(
str_payload)
dict_info["cbr_flag"][schedse1idex] = pyUtils.read_bits(
str_payload, 1)
dict_info[
"initial_cpb_removal_delay_length_minus1"] = pyUtils.read_bits(
str_payload, 5)
dict_info["cpb_removal_delay_length_minus1"] = pyUtils.read_bits(
str_payload, 5)
dict_info["dpb_output_delay_length_minus1"] = pyUtils.read_bits(
str_payload, 5)
dict_info["time_offset_length"] = pyUtils.read_bits(str_payload, 5)
def dec_ref_pic_marking(self, str_payload):
dict_info = self.dict_info
nal_info = self.nal_info
if nal_info["nal_unit_type"] == 5:
dict_info["no_output_of_prior_pics_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["long_term_reference_flag"] = pyUtils.read_bits(
str_payload, 1)
else:
dict_info[
"adaptive_ref_pic_marking_mode_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["adaptive_ref_pic_marking_mode_flag"] == 1:
dict_info["memory_management_control_operation"] = 1
while dict_info["memory_management_control_operation"] != 0:
dict_info[
"memory_management_control_operation"] = pyUtils.read_ue(
str_payload)
if dict_info[
"memory_management_control_operation"] == 1 or dict_info[
"memory_management_control_operation"] == 3:
dict_info[
"difference_of_pic_nums_minus1"] = pyUtils.read_ue(
str_payload)
if dict_info["memory_management_control_operation"] == 2:
dict_info["long_term_pic_num"] = pyUtils.read_ue(
str_payload)
if dict_info[
"memory_management_control_operation"] == 3 or dict_info[
"memory_management_control_operation"] == 6:
dict_info["long_term_frame_idx"] = pyUtils.read_ue(
str_payload)
if dict_info["memory_management_control_operation"] == 4:
dict_info[
"max_long_term_frame_idx_plus1"] = pyUtils.read_ue(
str_payload)
def ref_pic_list_reordering(self, str_payload):
dict_info = self.dict_info
if (dict_info["slice_type"] % 5) != 2 and (dict_info["slice_type"] %
5) != 4:
# slice_type != I and slice_type != SI
dict_info["ref_pic_list_reordering_flag_l0"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["ref_pic_list_reordering_flag_l0"] == 1:
dict_info["reordering_of_pic_nums_idc"] = 0
while dict_info["reordering_of_pic_nums_idc"] != 3:
dict_info["reordering_of_pic_nums_idc"] = pyUtils.read_ue(
str_payload)
if dict_info[
"reordering_of_pic_nums_idc"] == 0 or dict_info[
"reordering_of_pic_nums_idc"] == 1:
dict_info["abs_diff_pic_num_minus1"] = pyUtils.read_ue(
str_payload)
elif dict_info["reordering_of_pic_nums_idc"] == 2:
dict_info["long_term_pic_num"] = pyUtils.read_ue(
str_payload)
if (dict_info["slice_type"] % 5) == 1:
# slice_type == B
dict_info["ref_pic_list_reordering_flag_l1"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["ref_pic_list_reordering_flag_l1"] == 1:
dict_info["reordering_of_pic_nums_idc"] = 0
while dict_info["reordering_of_pic_nums_idc"] != 3:
dict_info["reordering_of_pic_nums_idc"] = pyUtils.read_ue(
str_payload)
if dict_info[
"reordering_of_pic_nums_idc"] == 0 or dict_info[
"reordering_of_pic_nums_idc"] == 1:
dict_info["abs_diff_pic_num_minus1"] = pyUtils.read_ue(
str_payload)
elif dict_info["reordering_of_pic_nums_idc"] == 2:
dict_info["long_term_pic_num"] = pyUtils.read_ue(
str_payload)
def vui_parameters(self, str_payload):
dict_info = self.dict_info
dict_info["aspect_ratio_info_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["aspect_ratio_info_present_flag"] == 1:
dict_info["aspect_ratio_idc"] = pyUtils.read_bits(str_payload, 8)
if dict_info["aspect_ratio_idc"] == self.Extended_SAR:
dict_info["sar_width"] = pyUtils.read_bits(str_payload, 16)
dict_info["sar_height"] = pyUtils.read_bits(str_payload, 16)
dict_info["overscan_info_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["overscan_info_present_flag"] == 1:
dict_info["overscan_appropriate_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["video_signal_type_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["video_signal_type_present_flag"] == 1:
dict_info["video_format"] = pyUtils.read_bits(str_payload, 3)
dict_info["video_full_range_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["colour_description_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["colour_description_present_flag"] == 1:
dict_info["colour_primaries"] = pyUtils.read_bits(
str_payload, 8)
dict_info["transfer_characteristics"] = pyUtils.read_bits(
str_payload, 8)
dict_info["matrix_coefficients"] = pyUtils.read_bits(
str_payload, 8)
dict_info["chroma_loc_info_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["chroma_loc_info_present_flag"] == 1:
dict_info["chroma_sample_loc_type_top_field"] = pyUtils.read_ue(
str_payload)
dict_info["chroma_sample_loc_type_bottom_field"] = pyUtils.read_ue(
str_payload)
dict_info["timing_info_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["timing_info_present_flag"] == 1:
dict_info["num_units_in_tick"] = pyUtils.read_bits(str_payload, 32)
dict_info["time_scale"] = pyUtils.read_bits(str_payload, 32)
dict_info["fixed_frame_rate_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["nal_hrd_parameters_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["nal_hrd_parameters_present_flag"] == 1:
self.hrd_parameters(str_payload)
dict_info["vcl_hrd_parameters_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["vcl_hrd_parameters_present_flag"] == 1:
self.hrd_parameters(str_payload)
if dict_info["nal_hrd_parameters_present_flag"] == 1 or dict_info[
"vcl_hrd_parameters_present_flag"] == 1:
dict_info["low_delay_hrd_flag"] = pyUtils.read_bits(str_payload, 1)
dict_info["pic_struct_present_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["bitstream_restriction_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["bitstream_restriction_flag"] == 1:
dict_info[
"motion_vectors_over_pic_boundaries_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["max_bytes_per_pic_denom"] = pyUtils.read_ue(str_payload)
dict_info["max_bits_per_mb_denom"] = pyUtils.read_ue(str_payload)
dict_info["log2_max_mv_length_horizontal"] = pyUtils.read_ue(
str_payload)
dict_info["log2_max_mv_length_vertical"] = pyUtils.read_ue(
str_payload)
dict_info["num_reorder_frames"] = pyUtils.read_ue(str_payload)
dict_info["max_dec_frame_buffering"] = pyUtils.read_ue(str_payload)
def parse(self):
dict_info = self.dict_info
str_sps_bin = BitArray(self.rbsp).bin
print("sps binary = " + str_sps_bin)
str_payload = pyUtils.StrBinArray(str_sps_bin)
dict_info["profile_idc"] = pyUtils.read_bits(str_payload, 8)
dict_info["constraint_set0_flag"] = pyUtils.read_bits(str_payload, 1)
dict_info["constraint_set1_flag"] = pyUtils.read_bits(str_payload, 1)
dict_info["constraint_set2_flag"] = pyUtils.read_bits(str_payload, 1)
dict_info["constraint_set3_flag"] = pyUtils.read_bits(str_payload, 1)
dict_info["reserved_zero_4bits"] = pyUtils.read_bits(str_payload, 4)
dict_info["level_idc"] = pyUtils.read_bits(str_payload, 8)
dict_info["seq_parameter_set_id"] = pyUtils.read_ue(str_payload)
if (dict_info["profile_idc"] == 100 or dict_info["profile_idc"] == 110
or dict_info["profile_idc"] == 122
or dict_info["profile_idc"] == 144):
dict_info["chroma_format_idc"] = pyUtils.read_ue(str_payload)
if dict_info["chroma_format_idc"] == 3:
dict_info[
"residual_colour_transform_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["bit_depth_luma_minus8"] = pyUtils.read_ue(str_payload)
dict_info["bit_depth_chroma_minus8"] = pyUtils.read_ue(str_payload)
dict_info[
"qpprime_y_zero_transform_bypass_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["seq_scaling_matrix_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["seq_scaling_matrix_present_flag"] == 1:
dict_info["seq_scaling_list_present_flag"] = [
0 for i in range(8)
]
dict_info["scaling_list_4x4"] = [[0 for j in range(16)]
for i in range(6)]
dict_info["use_default_scaling_matrix_4x4_flag"] = [
0 for i in range(6)
]
dict_info["scaling_list_8x8"] = [[0 for j in range(64)]
for i in range(2)]
dict_info["use_default_scaling_matrix_8x8_flag"] = [
0 for i in range(2)
]
for i in range(8):
dict_info["seq_scaling_list_present_flag"][
i] = pyUtils.read_bits(str_payload, 1)
if dict_info["seq_scaling_list_present_flag"][i] == 1:
if i < 6:
pyUtils.scaling_list(
str_payload, dict_info["scaling_list_4x4"][i],
16, dict_info[
"use_default_scaling_matrix_4x4_flag"][i])
else:
pyUtils.scaling_list(
str_payload,
dict_info["scaling_list_8x8"][i - 6], 64,
dict_info[
"use_default_scaling_matrix_8x8_flag"][i -
6])
dict_info["log2_max_frame_num_minus4"] = pyUtils.read_ue(
str_payload)
dict_info["pic_order_cnt_type"] = pyUtils.read_ue(str_payload)
if dict_info["pic_order_cnt_type"] == 0:
dict_info[
"log2_max_pic_order_cnt_lsb_minus4"] = pyUtils.read_ue(
str_payload)
elif dict_info["pic_order_cnt_type"] == 1:
dict_info[
"delta_pic_order_always_zero_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["offset_for_non_ref_pic"] = pyUtils.read_se(
str_payload)
dict_info["offset_for_top_to_bottom_field"] = pyUtils.read_se(
str_payload)
dict_info[
"num_ref_frames_in_pic_order_cnt_cycle"] = pyUtils.read_ue(
str_payload)
dict_info["offset_for_ref_frame"] = [
0 for i in range(
dict_info["num_ref_frames_in_pic_order_cnt_cycle"])
]
for i in range(
dict_info["num_ref_frames_in_pic_order_cnt_cycle"]):
dict_info["offset_for_ref_frame"][i] = pyUtils.read_se(
str_payload)
dict_info["num_ref_frames"] = pyUtils.read_ue(str_payload)
dict_info[
"gaps_in_frame_num_value_allowed_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["pic_width_in_mbs_minus1"] = pyUtils.read_ue(str_payload)
dict_info["pic_height_in_map_units_minus1"] = pyUtils.read_ue(
str_payload)
dict_info["frame_mbs_only_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["frame_mbs_only_flag"] == 0:
dict_info["mb_adaptive_frame_field_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["direct_8x8_inference_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["frame_cropping_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["frame_cropping_flag"] == 1:
dict_info["frame_crop_left_offset"] = pyUtils.read_ue(
str_payload)
dict_info["frame_crop_right_offset"] = pyUtils.read_ue(
str_payload)
dict_info["frame_crop_top_offset"] = pyUtils.read_ue(
str_payload)
dict_info["frame_crop_bottom_offset"] = pyUtils.read_ue(
str_payload)
dict_info["vui_parameters_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["vui_parameters_present_flag"] == 1:
self.vui_parameters(str_payload)
pyUtils.rbsp_trailing_bits(str_payload)
def parse(self):
dict_info = self.dict_info
str_pps_bin = BitArray(self.rbsp).bin
print("pps binary = " + str_pps_bin)
str_payload = pyUtils.StrBinArray(str_pps_bin)
dict_info["pic_parameter_set_id"] = pyUtils.read_ue(str_payload)
dict_info["seq_parameter_set_id"] = pyUtils.read_ue(str_payload)
dict_info["entropy_coding_mode_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["pic_order_present_flag"] = pyUtils.read_bits(str_payload, 1)
dict_info["num_slice_groups_minus1"] = pyUtils.read_ue(str_payload)
if dict_info["num_slice_groups_minus1"] > 0:
dict_info["slice_group_map_type"] = pyUtils.read_ue(str_payload)
if dict_info["slice_group_map_type"] == 0:
dict_info["run_length_minus1"] = [
0 for i in range(dict_info["num_slice_groups_minus1"] + 1)
]
for i_group in range(dict_info["num_slice_groups_minus1"] + 1):
dict_info["run_length_minus1"][i_group] = pyUtils.read_ue(
str_payload)
elif dict_info["slice_group_map_type"] == 2:
dict_info["top_left"] = [
0 for i in range(dict_info["num_slice_groups_minus1"] + 1)
]
dict_info["bottom_right"] = [
0 for i in range(dict_info["num_slice_groups_minus1"] + 1)
]
for i_group in range(dict_info["num_slice_groups_minus1"] + 1):
dict_info["top_left"][i_group] = pyUtils.read_ue(
str_payload)
dict_info["bottom_right"][i_group] = pyUtils.read_ue(
str_payload)
elif dict_info["slice_group_map_type"] == 3 or dict_info[
"slice_group_map_type"] == 4 or dict_info[
"slice_group_map_type"] == 5:
dict_info[
"slice_group_change_direction_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["slice_group_change_rate_minus1"] = pyUtils.read_ue(
str_payload)
dict_info["pic_size_in_map_units_minus1"] = pyUtils.read_ue(
str_payload)
for i in range(dict_info["pic_size_in_map_units_minus1"] + 1):
pass
dict_info["num_ref_idx_l0_active_minus1"] = pyUtils.read_ue(
str_payload)
dict_info["num_ref_idx_l1_active_minus1"] = pyUtils.read_ue(
str_payload)
dict_info["weighted_pred_flag"] = pyUtils.read_bits(str_payload, 1)
dict_info["weighted_bipred_idc"] = pyUtils.read_bits(str_payload, 2)
dict_info["pic_init_qp_minus26"] = pyUtils.read_se(str_payload)
dict_info["pic_init_qs_minus26"] = pyUtils.read_se(str_payload)
dict_info["chroma_qp_index_offset"] = pyUtils.read_se(str_payload)
dict_info[
"deblocking_filter_control_present_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["constrained_intra_pred_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["redundant_pic_cnt_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if pyUtils.more_rbsp_data(str_payload):
dict_info["transform_8x8_mode_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["pic_scaling_matrix_present_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["pic_scaling_matrix_present_flag"] == 1:
dict_info["pic_scaling_list_present_flag"] = [
0 for i in range(6 + 2 * self.transform_8x8_mode_flag)
]
dict_info["scaling_list_4x4"] = [[0 for j in range(16)]
for i in range(6)]
dict_info["use_default_scaling_matrix_4x4_flag"] = [
0 for i in range(6)
]
dict_info["scaling_list_8x8"] = [[0 for j in range(64)]
for i in range(2)]
dict_info["use_default_scaling_matrix_8x8_flag"] = [
0 for i in range(2)
]
for i in range(6 + 2 * self.transform_8x8_mode_flag):
dict_info["pic_scaling_list_present_flag"][
i] = pyUtils.read_bits(str_payload, 1)
if dict_info["pic_scaling_list_present_flag"][i] == 1:
if i < 6:
pyUtils.scaling_list(
str_payload, dict_info["scaling_list_4x4"][i],
16, dict_info[
"use_default_scaling_matrix_4x4_flag"][i])
else:
pyUtils.scaling_list(
str_payload,
dict_info["scaling_list_8x8"][i - 6], 64,
dict_info[
"use_default_scaling_matrix_8x8_flag"][i -
6])
dict_info["second_chroma_qp_index_offset"] = pyUtils.read_se(
str_payload)
pyUtils.rbsp_trailing_bits(str_payload)
def pred_weight_table(self, str_payload):
dict_info = self.dict_info
active_sps = self.active_sps
dict_info["luma_log2_weight_denom"] = pyUtils.read_ue(str_payload)
if active_sps["chroma_format_idc"] != 0:
dict_info["chroma_log2_weight_denom"] = pyUtils.read_ue(
str_payload)
dict_info["luma_weight_l0"] = [
0 for i in range(dict_info["num_ref_idx_l0_active_minus1"] + 1)
]
dict_info["luma_offset_l0"] = [
0 for i in range(dict_info["num_ref_idx_l0_active_minus1"] + 1)
]
dict_info["chroma_weight_l0"] = [[
0 for j in range(2)
] for i in range(dict_info["num_ref_idx_l0_active_minus1"] + 1)]
dict_info["chroma_offset_l0"] = [[
0 for j in range(2)
] for i in range(dict_info["num_ref_idx_l0_active_minus1"] + 1)]
for i in range(dict_info["num_ref_idx_l0_active_minus1"] + 1):
dict_info["luma_weight_l0_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["luma_weight_l0_flag"] == 1:
dict_info["luma_weight_l0"][i] = pyUtils.read_se(str_payload)
dict_info["luma_offset_l0"][i] = pyUtils.read_se(str_payload)
if active_sps["chroma_format_idc"] != 0:
dict_info["chroma_weight_l0_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["chroma_weight_l0_flag"] == 1:
for j in range(2):
dict_info["chroma_weight_l0"][i][j] = pyUtils.read_se(
str_payload)
dict_info["chroma_offset_l0"][i][j] = pyUtils.read_se(
str_payload)
if (dict_info["slice_type"] % 5) == 1:
# slice_type == B
dict_info["luma_weight_l1"] = [
0 for i in range(dict_info["num_ref_idx_l1_active_minus1"] + 1)
]
dict_info["luma_offset_l1"] = [
0 for i in range(dict_info["num_ref_idx_l1_active_minus1"] + 1)
]
dict_info["chroma_weight_l1"] = [[
0 for j in range(2)
] for i in range(dict_info["num_ref_idx_l1_active_minus1"] + 1)]
dict_info["chroma_offset_l1"] = [[
0 for j in range(2)
] for i in range(dict_info["num_ref_idx_l1_active_minus1"] + 1)]
for i in range(dict_info["num_ref_idx_l1_active_minus1"] + 1):
dict_info["luma_weight_l1_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["luma_weight_l1_flag"] == 1:
dict_info["luma_weight_l1"][i] = pyUtils.read_se(
str_payload)
dict_info["luma_offset_l1"][i] = pyUtils.read_se(
str_payload)
if active_sps["chroma_format_idc"] != 0:
dict_info["chroma_weight_l1_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["chroma_weight_l1_flag"] == 1:
for j in range(2):
dict_info["chroma_weight_l1"][i][
j] = pyUtils.read_se(str_payload)
dict_info["chroma_offset_l1"][i][
j] = pyUtils.read_se(str_payload)
def parse(self):
print("slice_header parse begin")
dict_info = self.dict_info
active_sps = self.active_sps
active_pps = self.active_pps
nal_info = self.nal_info
str_slice_header_bin = BitArray(self.rbsp).bin
# print("slice header binary = " + str_slice_header_bin)
str_payload = pyUtils.StrBinArray(str_slice_header_bin)
dict_info["first_mb_in_slice"] = pyUtils.read_ue(str_payload)
dict_info["slice_type"] = pyUtils.read_ue(str_payload)
dict_info["pic_parameter_set_id"] = pyUtils.read_ue(str_payload)
dict_info["frame_num"] = pyUtils.read_bits(
str_payload, active_sps["log2_max_frame_num_minus4"] + 4)
if active_sps["frame_mbs_only_flag"] == 0:
dict_info["field_pic_flag"] = pyUtils.read_bits(str_payload, 1)
if dict_info["field_pic_flag"] == 1:
dict_info["bottom_field_flag"] = pyUtils.read_bits(
str_payload, 1)
if nal_info["nal_unit_type"] == 5:
dict_info["idr_pic_id"] = pyUtils.read_ue(str_payload)
if active_sps["pic_order_cnt_type"] == 0:
dict_info["pic_order_cnt_lsb"] = pyUtils.read_bits(
str_payload,
active_sps["log2_max_pic_order_cnt_lsb_minus4"] + 4)
if active_pps["pic_order_present_flag"] == 1 and dict_info[
"field_pic_flag"] == 0:
dict_info["delta_pic_order_cnt_bottom"] = pyUtils.read_se(
str_payload)
if active_sps["pic_order_cnt_type"] == 1 and active_sps[
"delta_pic_order_always_zero_flag"] == 0:
dict_info["delta_pic_order_cnt"] = []
dict_info["delta_pic_order_cnt"].append(
pyUtils.read_se(str_payload))
if active_pps["pic_order_present_flag"] == 1 and dict_info[
"field_pic_flag"] == 0:
dict_info["delta_pic_order_cnt"].append(
pyUtils.read_se(str_payload))
if active_pps["redundant_pic_cnt_present_flag"] == 1:
dict_info["redundant_pic_cnt"] = pyUtils.read_ue(str_payload)
if (dict_info["slice_type"] % 5) == 1:
# slice_type == B
dict_info["direct_spatial_mv_pred_flag"] = pyUtils.read_bits(
str_payload, 1)
if (dict_info["slice_type"] %
5) == 0 or (dict_info["slice_type"] %
5) == 3 or (dict_info["slice_type"] % 5) == 1:
# slice_type == P or slice_type == SP or slice_type == B
dict_info["num_ref_idx_active_override_flag"] = pyUtils.read_bits(
str_payload, 1)
if dict_info["num_ref_idx_active_override_flag"] == 1:
dict_info["num_ref_idx_l0_active_minus1"] = pyUtils.read_ue(
str_payload)
if (dict_info["slice_type"] % 5) == 1:
dict_info[
"num_ref_idx_l1_active_minus1"] = pyUtils.read_ue(
str_payload)
self.ref_pic_list_reordering(str_payload)
if (active_pps["weighted_pred_flag"] == 1 and
((dict_info["slice_type"] % 5) == 0 or
(dict_info["slice_type"] % 5) == 3)) or (
active_pps["weighted_bipred_idc"] == 1 and
(dict_info["slice_type"] % 5) == 1):
self.pred_weight_table(str_payload)
if nal_info["nal_ref_idc"] != 0:
self.dec_ref_pic_marking(str_payload)
if active_pps["entropy_coding_mode_flag"] == 1 and (
dict_info["slice_type"] %
5) != 2 and (dict_info["slice_type"] % 5) != 4:
dict_info["cabac_init_idc"] = pyUtils.read_ue(str_payload)
dict_info["slice_qp_delta"] = pyUtils.read_se(str_payload)
if (dict_info["slice_type"] % 5) == 3 or (dict_info["slice_type"] %
5) == 4:
if (dict_info["slice_type"] % 5) == 3:
dict_info["sp_for_switch_flag"] = pyUtils.read_bits(
str_payload, 1)
dict_info["slice_qs_delta"] = pyUtils.read_se(str_payload)
if active_pps["deblocking_filter_control_present_flag"] == 1:
dict_info["disable_deblocking_filter_idc"] = pyUtils.read_ue(
str_payload)
if dict_info["disable_deblocking_filter_idc"] != 1:
dict_info["slice_alpha_c0_offset_div2"] = pyUtils.read_se(
str_payload)
dict_info["slice_beta_offset_div2"] = pyUtils.read_se(
str_payload)
if active_pps["num_slice_groups_minus1"] > 0 and active_pps[
"slice_group_map_type"] >= 3 and active_pps[
"slice_group_map_type"] <= 5:
# self.slice_group_change_cycle =
pass
print("slice_header parse begin")
pass