/* * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. * * The Original Code is Fluendo MPEG Demuxer plugin. * * The Initial Developer of the Original Code is Fluendo, S.L. * Portions created by Fluendo, S.L. are Copyright (C) 2005 * Fluendo, S.L. All Rights Reserved. * * Contributor(s): Wim Taymans * */ #ifndef __GST_MPEG_DESC_H__ #define __GST_MPEG_DESC_H__ #include /* Others */ /* 0xFF is forbidden */ /* common for all descriptors */ #define DESC_TAG(desc) (desc[0]) #define DESC_LENGTH(desc) (desc[1]) /* video_stream_descriptor */ #define DESC_VIDEO_STREAM_multiple_framerate_flag(desc) (((desc)[2] & 0x80) == 0x80) #define DESC_VIDEO_STREAM_frame_rate_code(desc) (((desc)[2] & 0x38) >> 3) #define DESC_VIDEO_STREAM_MPEG_1_only_flag(desc) (((desc)[2] & 0x04) == 0x04) #define DESC_VIDEO_STREAM_constrained_parameter_flag(desc) (((desc)[2] & 0x02) == 0x02) #define DESC_VIDEO_STREAM_still_picture_flag(desc) (((desc)[2] & 0x01) == 0x01) /* if (MPEG_1_only_flag == 1) */ #define DESC_VIDEO_STREAM_profile_and_level_indication(desc) ((desc)[3]) #define DESC_VIDEO_STREAM_chroma_format(desc) (((desc)[4] & 0xc0) >> 6) #define DESC_VIDEO_STREAM_frame_rate_extension_flag(desc) (((desc)[4] & 0x20) == 0x20) /* audio_stream_descriptor */ #define DESC_AUDIO_STREAM_free_format_flag(desc) (((desc)[2] & 0x80) == 0x80) #define DESC_AUDIO_STREAM_ID(desc) (((desc)[2] & 0x40) == 0x40) #define DESC_AUDIO_STREAM_layer(desc) (((desc)[2] & 0x30) >> 4) #define DESC_AUDIO_STREAM_variable_rate_audio_indicator(desc) (((desc)[2] & 0x08) == 0x08) /* hierarchy_descriptor */ #define DESC_HIERARCHY_hierarchy_type(desc) (((desc)[2] & 0x0f)) #define DESC_HIERARCHY_hierarchy_layer_index(desc) (((desc)[3] & 0x3f)) #define DESC_HIERARCHY_hierarchy_embedded_layer_index(desc) (((desc)[4] & 0x3f)) #define DESC_HIERARCHY_hierarchy_channel(desc) (((desc)[5] & 0x3f)) /* registration_descriptor */ #define DESC_REGISTRATION_format_identifier(desc) (GST_READ_UINT32_BE ((desc)+2)) #define DESC_REGISTRATION_additional_ident_info_len(desc) ((desc)[1] - 4) #define DESC_REGISTRATION_additional_ident_info(desc) (&(desc)[6]) /* data_stream_alignment_descriptor */ #define DESC_DATA_STREAM_ALIGNMENT_alignment_type(desc) ((desc)[2]) /* target_background_grid_descriptor */ #define DESC_TARGET_BACKGROUND_GRID_horizontal_size(desc) (GST_READ_UINT16_BE ((desc)+2) >> 2) #define DESC_TARGET_BACKGROUND_GRID_vertical_size(desc) ((GST_READ_UINT32_BE ((desc)+2) & 0x0003fff0) >> 4) #define DESC_TARGET_BACKGROUND_GRID_aspect_ratio_information(desc) ((desc)[5] & 0x0f) /* video_window_descriptor */ #define DESC_VIDEO_WINDOW_horizontal_offset(desc) (GST_READ_UINT16_BE ((desc)+2) >> 2) #define DESC_VIDEO_WINDOW_vertical_offset(desc) ((GST_READ_UINT32_BE ((desc)+2) & 0x0003fff0) >> 4) #define DESC_VIDEO_WINDOW_window_priority(desc) ((desc)[5] & 0x0f) /* CA_descriptor */ #define DESC_CA_system_ID(desc) (GST_READ_UINT16_BE ((desc)+2)) #define DESC_CA_PID(desc) (GST_READ_UINT16_BE ((desc)+2) & 0x1fff) /* ISO_639_language_descriptor */ #define DESC_ISO_639_LANGUAGE_codes_n(desc) ((desc[1]) >> 2) #define DESC_ISO_639_LANGUAGE_language_code_nth(desc,i) (&(desc[2 + (4*i)])) #define DESC_ISO_639_LANGUAGE_audio_type_nth(desc,i) ((desc)[5 + (4*i)]) /* system_clock_descriptor */ #define DESC_SYSTEM_CLOCK_external_clock_reference_indicator(desc) (((desc)[2] & 0x80) == 0x80) #define DESC_SYSTEM_CLOCK_clock_accuracy_integer(desc) ((desc)[2] & 0x3f) #define DESC_SYSTEM_CLOCK_clock_accuracy_exponent(desc) (((desc)[3] & 0xe0) >> 5) /* multiplex_buffer_utilization_descriptor */ #define DESC_MULTIPLEX_BUFFER_UTILISATION_bound_valid_flag(desc) (((desc)[2] & 0x80) == 0x80) #define DESC_MULTIPLEX_BUFFER_UTILISATION_LTW_offset_lower_bound(desc) (GST_READ_UINT16_BE ((desc)+2) & 0x7fff) #define DESC_MULTIPLEX_BUFFER_UTILISATION_LTW_offset_upper_bound(desc) (GST_READ_UINT16_BE ((desc)+4) & 0x7fff) /* copyright_descriptor */ #define DESC_COPYRIGHT_copyright_identifier(desc) (GST_READ_UINT32_BE ((desc)+2)) #define DESC_COPYRIGHT_additional_copyright_info_len(desc) ((desc)[1] - 4) #define DESC_COPYRIGHT_additional_copyright_info(desc) (&(desc)[6]) /* maximum_bitrate_descriptor */ #define DESC_MAXIMUM_BITRAT_maximum_bitrate(desc) (((((guint32)desc[2]) & 0x3f) << 16) | \ GST_READ_UINT16_BE ((desc)+3)) /* private_data_indicator_descriptor */ #define DESC_PRIVATE_DATA_INDICATOR_indicator(desc) (GST_READ_UINT32_BE(&desc[2])) /* smoothing_buffer_descriptor */ #define DESC_SMOOTHING_BUFFER_sb_leak_rate(desc) (((((guint32)desc[2]) & 0x3f) << 16) | \ GST_READ_UINT16_BE ((desc)+3)) #define DESC_SMOOTHING_BUFFER_sb_size(desc) (((((guint32)desc[5]) & 0x3f) << 16) | \ GST_READ_UINT16_BE ((desc)+6)) /* STD_descriptor */ #define DESC_STD_leak_valid_flag(desc) (((desc)[2] & 0x01) == 0x01) /* ibp_descriptor */ #define DESC_IBP_closed_gop_flag(desc) (((desc)[2] & 0x80) == 0x80) #define DESC_IBP_identical_gop_flag(desc) (((desc)[2] & 0x40) == 0x40) #define DESC_IBP_max_gop_length(desc) (GST_READ_UINT16_BE ((desc)+6) & 0x3fff) /* time_code descriptor */ #define DESC_TIMECODE_video_pid(desc) (GST_READ_UINT16_BE ((desc) + 2) & 0x1fff) /* Stream identifier descriptor */ #define DESC_DVB_STREAM_IDENTIFIER_component_tag(desc) (desc[2]) /* DVB Network Name descriptor */ #define DESC_DVB_NETWORK_NAME_length(desc) (GST_READ_UINT8((desc)+1)) #define DESC_DVB_NETWORK_NAME_text(desc) (desc+2) /* DVB Service Descriptor */ #define DESC_DVB_SERVICE_type(desc) (desc[2]) #define DESC_DVB_SERVICE_provider_name_length(desc) (desc[3]) #define DESC_DVB_SERVICE_provider_name_text(desc) (desc+4) #define DESC_DVB_SERVICE_name_length(desc) (desc[4 + DESC_DVB_SERVICE_provider_name_length(desc)]) #define DESC_DVB_SERVICE_name_text(desc) (desc + 5 + DESC_DVB_SERVICE_provider_name_length(desc)) /* DVB Component Descriptor */ #define DESC_DVB_COMPONENT_stream_content(desc) (desc[2] & 0x0F) #define DESC_DVB_COMPONENT_type(desc) (desc[3]) #define DESC_DVB_COMPONENT_tag(desc) (desc[4]) #define DESC_DVB_COMPONENT_language(desc) (desc + 5) /* DVB Bouquet Name Descriptor */ #define DESC_DVB_BOUQUET_NAME_text(desc) (desc + 2) /* DVB Short Event Descriptor */ #define DESC_DVB_SHORT_EVENT_name_text(desc) (desc + 6) #define DESC_DVB_SHORT_EVENT_name_length(desc) (desc[5]) #define DESC_DVB_SHORT_EVENT_description_text(desc) (desc + 6 + DESC_DVB_SHORT_EVENT_name_length(desc) + 1) #define DESC_DVB_SHORT_EVENT_description_length(desc) (desc[6 + DESC_DVB_SHORT_EVENT_name_length(desc)]) /* DVB Extended Event Descriptor */ #define DESC_DVB_EXTENDED_EVENT_descriptor_number(desc) ((desc[2] & 0xF0) >> 4) #define DESC_DVB_EXTENDED_EVENT_last_descriptor_number(desc) (desc[2] & 0x0F) #define DESC_DVB_EXTENDED_EVENT_iso639_language_code(desc) (desc + 3) #define DESC_DVB_EXTENDED_EVENT_items_length(desc) (desc[6]) #define DESC_DVB_EXTENDED_EVENT_items(desc) (desc + 7) #define DESC_DVB_EXTENDED_EVENT_text_length(desc) (desc[7 + DESC_DVB_EXTENDED_EVENT_items_length(desc)]) #define DESC_DVB_EXTENDED_EVENT_text(desc) (desc + 7 + DESC_DVB_EXTENDED_EVENT_items_length(desc) + 1) /* DVB Satellite Delivery System Descriptor */ #define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_frequency(desc) (desc + 2) #define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_orbital_position(desc) (desc + 6) #define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_west_east_flag(desc) ((desc[8] & 0x80) == 0x80) #define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_polarization(desc) ((desc[8] >> 5) & 0x3) #define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_modulation(desc) (desc[8] & 0x3) #define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_symbol_rate(desc) (desc + 9) #define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_fec_inner(desc) (desc[12] & 0x0F) /* DVB Terrestrial Delivery System Descriptor */ #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_frequency(desc) (GST_READ_UINT32_BE((desc) + 2)) #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_bandwidth(desc) ((desc[6] >> 5) & 0x7) #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_constellation(desc) ((desc[7] >> 6) & 0x3) #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_hierarchy(desc) ((desc[7] >> 3) & 0x7) #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_code_rate_hp(desc) (desc[7] & 0x7) #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_code_rate_lp(desc) ((desc[8] >> 5) & 0x7) #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_guard_interval(desc) ((desc[8] >> 3) & 0x3) #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_transmission_mode(desc) ((desc[8] >> 1) & 0x3) #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_other_frequency(desc) ((desc[8] & 0x01) == 0x01) /* DVB Cable Delivery System Descriptor */ #define DESC_DVB_CABLE_DELIVERY_SYSTEM_frequency(desc) (desc + 2) #define DESC_DVB_CABLE_DELIVERY_SYSTEM_fec_outer(desc) (desc[7] & 0x0F) #define DESC_DVB_CABLE_DELIVERY_SYSTEM_modulation(desc) (desc[8]) #define DESC_DVB_CABLE_DELIVERY_SYSTEM_symbol_rate(desc) (desc + 9) #define DESC_DVB_CABLE_DELIVERY_SYSTEM_fec_inner(desc) (desc[12] & 0x0F) /* DVB Data Broadcast Descriptor */ #define DESC_DVB_DATA_BROADCAST_data_broadcast_id(desc) (GST_READ_UINT16_BE((desc) + 2)) #define DESC_DVB_DATA_BROADCAST_component_tag(desc) (desc[4]) #define DESC_DVB_DATA_BROADCAST_selector_length(desc) (desc[5]) #define DESC_DVB_DATA_BROADCAST_selector(desc) (desc + 6) #define DESC_DVB_DATA_BROADCAST_iso639_language_code(desc) (desc + 6 + DESC_DVB_DATA_BROADCAST_selector_length(desc)) #define DESC_DVB_DATA_BROADCAST_text_length(desc) (desc + 9 + DESC_DVB_DATA_BROADCAST_selector_length(desc)) #define DESC_DVB_DATA_BROADCAST_text(desc) (desc + 10 + DESC_DVB_DATA_BROADCAST_selector_length(desc)) /* DVB Data Broadcast Id Descriptor */ #define DESC_DVB_DATA_BROADCAST_ID_data_broadcast_id(desc) (GST_READ_UINT16_BE((desc) + 2)) #define DESC_DVB_DATA_BROADCAST_ID_id_selector_byte(desc) (desc + 4) /* DVB Carousel Identifier Descriptor */ #define DESC_DVB_CAROUSEL_IDENTIFIER_carousel_id(desc) (GST_READ_UINT32_BE((desc) + 2)) /* AC3_audio_stream_descriptor */ #define DESC_AC_AUDIO_STREAM_bsid(desc) ((desc)[2] & 0x1f) /* FIXME : Move list of well know registration ids to an enum * in the mpegts library. * * See http://www.smpte-ra.org/mpegreg/mpegreg.html for a full list * */ /* registration_descriptor format IDs */ #define DRF_ID_HDMV 0x48444d56 #define DRF_ID_VC1 0x56432D31 /* defined in RP227 */ #define DRF_ID_DTS1 0x44545331 #define DRF_ID_DTS2 0x44545332 #define DRF_ID_DTS3 0x44545333 #define DRF_ID_S302M 0x42535344 #define DRF_ID_TSHV 0x54534856 #endif /* __GST_MPEG_DESC_H__ */