class ShortEventDescriptor(Descriptor):
"""短形式イベント記述子(ARIB-STD-B10-2-6.2.15)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
ISO_639_language_code = char(24)
event_name_length = uimsbf(8)
event_name_char = aribstr(event_name_length)
text_length = uimsbf(8)
text_char = aribstr(text_length)
class ServiceDescriptor(Descriptor):
"""サービス記述子(ARIB-STD-B10-2-6.2.13)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
service_type = uimsbf(8)
service_provider_name_length = uimsbf(8)
service_provider_name = aribstr(service_provider_name_length)
service_name_length = uimsbf(8)
service_name = aribstr(service_name_length)
class AudioComponentDescriptor(Descriptor):
"""音声コンポーネント記述子(ARIB-STD-B10-2-6.2.26)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
reserved_future_use = bslbf(4)
stream_content = uimsbf(4)
component_type = uimsbf(8)
component_tag = uimsbf(8)
stream_type = uimsbf(8)
simulcast_group_tag = bslbf(8)
ES_multi_lingual_flag = bslbf(1)
main_component_flag = bslbf(1)
quality_indicator = bslbf(2)
sampling_rate = uimsbf(3)
reserved_future_use_2 = bslbf(1)
ISO_639_language_code = char(24)
@case(ES_multi_lingual_flag)
class with_ES_multi_lingual(Syntax):
ISO_639_language_code_2 = char(24)
audio_text = aribstr(lambda self: (
self.descriptor_length - 12
if self.ES_multi_lingual_flag == 1
else self.descriptor_length - 9
))
class NetworkNameDescriptor(Descriptor):
"""ネットワーク名記述子(ARIB-STD-B10-2.6.2.11)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
char = aribstr(descriptor_length)
class BroadcasterNameDescriptor(Descriptor):
"""ブロードキャスタ名記述子(ARIB-STD-B10-2-6.2.36)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
char = aribstr(descriptor_length)
class BouquetNameDescriptor(Descriptor):
"""ブーケ名記述子(ARIB-STD-B10-2.6.2.1)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
char = aribstr(descriptor_length)
class items(Syntax):
item_description_length = uimsbf(8)
item_description_char = aribstr(item_description_length)
item_length = uimsbf(8)
# マルチバイトの途中でitemが別れていることがあるので、
# ここでaribstrとしてパースすると文字化けすることがある
item_char = raw(item_length)
class ComponentDescriptor(Descriptor):
"""コンポーネント記述子(ARIB-STD-B10-2-6.2.3)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
reserved_future_use = bslbf(4)
stream_content = uimsbf(4)
component_type = uimsbf(8)
component_tag = uimsbf(8)
ISO_639_language_code = char(24)
component_text = aribstr(lambda self: self.descriptor_length - 6)
class SeriesDescriptor(Descriptor):
"""シリーズ記述子 (ARIB-STD-B10-2-6.2.33)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
series_id = uimsbf(16)
repeat_label = uimsbf(4)
program_pattern = uimsbf(3)
expire_date_valid_flag = uimsbf(1)
expire_date = mjd(16)
episode_number = uimsbf(12)
last_episode_number = uimsbf(12)
series_name_char = aribstr(lambda self: self.descriptor_length - 8)
class TSInformationDescriptor(Descriptor):
"""TS情報記述子(ARIB-STD-B10-2.6.2.42)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
remote_control_key_id = uimsbf(8)
length_of_ts_name = uimsbf(6)
transmission_type_count = uimsbf(2)
ts_name_char = aribstr(length_of_ts_name)
@times(transmission_type_count)
class transmissions(Syntax):
transmission_type_info = bslbf(8)
num_of_service = uimsbf(8)
@times(num_of_service)
class services(Syntax):
service_id = uimsbf(16)
class DataContentDescriptor(Descriptor):
"""データコンテンツ記述子(ARIB-STD-B10-2-6.2.28)
data_component_idが0x0008のものは、selector_byteに
字幕・文字スーパーの識別情報が入っている(ARIB-STD-B24-1-3-9.6.2)
"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
data_component_id = uimsbf(16)
entry_component = uimsbf(8)
selector_length = uimsbf(8)
# ARIB-STD-B24-1-3-9.6.2
# これ以外のselector_byteの実装は、ifの入れ子が正しく処理できないと実装できない
@case(lambda self: self.data_component_id == 0x08)
class arib_caption_info(Syntax):
num_languages = uimsbf(8)
@times(num_languages)
class languages(Syntax):
language_tag = bslbf(3)
reserved = bslbf(1)
DMF = bslbf(4)
ISO_639_language_code = char(24)
@case(lambda self: self.data_component_id != 0x08)
class other(Syntax):
selector_byte = uimsbf(lambda self: self.selector_length)
num_of_component_ref = uimsbf(8)
@times(num_of_component_ref)
class component_refs(Syntax):
component_ref = uimsbf(8)
ISO_639_language_code = char(24)
text_length = uimsbf(8)
data_text = aribstr(text_length)
class ExtendedEventDescriptor(Descriptor):
"""拡張形式イベント記述子(ARIB-STD-B10-2-6.2.7)"""
descriptor_tag = uimsbf(8)
descriptor_length = uimsbf(8)
descriptor_number = uimsbf(4)
last_descriptor_number = uimsbf(4)
ISO_639_language_code = char(24)
length_of_items = uimsbf(8)
@loop(lambda self: self.length_of_items)
class items(Syntax):
item_description_length = uimsbf(8)
item_description_char = aribstr(item_description_length)
item_length = uimsbf(8)
# マルチバイトの途中でitemが別れていることがあるので、
# ここでaribstrとしてパースすると文字化けすることがある
item_char = raw(item_length)
text_length = uimsbf(8)
text_char = aribstr(text_length)
class without_network(Syntax):
private_data_byte = aribstr(lambda self: (
self.descriptor_length - 1 - self.event_count * 4
))
class type_03(Syntax):
logo_char = aribstr(lambda self: self.descriptor_length - 1)
class TextInfo(Syntax):
ISO_639_language_code = char(24)
text_length = uimsbf(8)
text_char = aribstr(text_length)
class names(Syntax):
ISO_639_language_code = char(24)
platform_name_length = uimsbf(8)
text_char = aribstr(platform_name_length)
class linkage_type_0x03(Syntax):
message_id = uimsbf(8)
message = aribstr(lambda self: self.descriptor_length - 8)
