/* * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/. * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations * under the License. * * 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 * Jan Schmidt */ #ifndef __GST_MPEG_DESC_H__ #define __GST_MPEG_DESC_H__ #include /* * descriptor_tag TS PS Identification * 0 n/a n/a Reserved * 1 n/a n/a Reserved * 2 X X video_stream_descriptor * 3 X X audio_stream_descriptor * 4 X X hierarchy_descriptor * 5 X X registration_descriptor * 6 X X data_stream_alignment_descriptor * 7 X X target_background_grid_descriptor * 8 X X video_window_descriptor * 9 X X CA_descriptor * 10 X X ISO_639_language_descriptor * 11 X X system_clock_descriptor * 12 X X multiplex_buffer_utilization_descriptor * 13 X X copyright_descriptor * 14 X maximum bitrate descriptor * 15 X X private data indicator descriptor * 16 X X smoothing buffer descriptor * 17 X STD_descriptor * 18 X X IBP descriptor * 19-63 n/a n/a ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Reserved * 64-255 n/a n/a User Private */ #define DESC_VIDEO_STREAM 2 #define DESC_AUDIO_STREAM 3 #define DESC_HIERARCHY 4 #define DESC_REGISTRATION 5 #define DESC_DATA_STREAM_ALIGNMENT 6 #define DESC_TARGET_BACKGROUND_GRID 7 #define DESC_VIDEO_WINDOW 8 #define DESC_CA 9 #define DESC_ISO_639_LANGUAGE 10 #define DESC_SYSTEM_CLOCK 11 #define DESC_MULTIPLEX_BUFFER_UTILISATION 12 #define DESC_COPYRIGHT 13 #define DESC_MAXIMUM_BITRATE 14 #define DESC_PRIVATE_DATA_INDICATOR 15 #define DESC_SMOOTHING_BUFFER 16 #define DESC_STD 17 #define DESC_IBP 18 #define DESC_DIRAC_TC_PRIVATE 0xAC /* DVB tags */ #define DESC_DVB_NETWORK_NAME 0x40 #define DESC_DVB_SERVICE_LIST 0x41 #define DESC_DVB_STUFFING 0x42 #define DESC_DVB_SATELLITE_DELIVERY_SYSTEM 0x43 #define DESC_DVB_CABLE_DELIVERY_SYSTEM 0x44 #define DESC_DVB_VBI_DATA 0x45 #define DESC_DVB_VBI_TELETEXT 0x46 #define DESC_DVB_BOUQUET_NAME 0x47 #define DESC_DVB_SERVICE 0x48 #define DESC_DVB_COUNTRY_AVAILABILITY 0x49 #define DESC_DVB_LINKAGE 0x4A #define DESC_DVB_NVOD_REFERENCE 0x4B #define DESC_DVB_TIME_SHIFTED_SERVICE 0x4C #define DESC_DVB_SHORT_EVENT 0x4D #define DESC_DVB_EXTENDED_EVENT 0x4E #define DESC_DVB_TIME_SHIFTED_EVENT 0x4F #define DESC_DVB_COMPONENT 0x50 #define DESC_DVB_MOSAIC 0x51 #define DESC_DVB_STREAM_IDENTIFIER 0x52 #define DESC_DVB_CA_IDENTIFIER 0x53 #define DESC_DVB_CONTENT 0x54 #define DESC_DVB_PARENTAL_RATING 0x55 #define DESC_DVB_TELETEXT 0x56 #define DESC_DVB_TELEPHONE 0x57 #define DESC_DVB_LOCAL_TIME_OFFSET 0x58 #define DESC_DVB_SUBTITLING 0x59 #define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM 0x5A #define DESC_DVB_MULTILINGUAL_NETWORK_NAME 0x5B #define DESC_DVB_MULTILINGUAL_BOUQUET_NAME 0x5C #define DESC_DVB_MULTILINGUAL_SERVICE_NAME 0x5D #define DESC_DVB_MULTILINGUAL_COMPONENT 0x5E #define DESC_DVB_PRIVATE_DATA 0x5F #define DESC_DVB_SERVICE_MOVE 0x60 #define DESC_DVB_SHORT_SMOOTHING_BUFFER 0x61 #define DESC_DVB_FREQUENCY_LIST 0x62 #define DESC_DVB_PARTIAL_TRANSPORT_STREAM 0x63 #define DESC_DVB_DATA_BROADCAST 0x64 #define DESC_DVB_SCRAMBLING 0x65 #define DESC_DVB_DATA_BROADCAST_ID 0x66 #define DESC_DVB_TRANSPORT_STREAM 0x67 #define DESC_DVB_DSNG 0x68 #define DESC_DVB_PDC 0x69 #define DESC_DVB_AC3 0x6A #define DESC_DVB_ANCILLARY_DATA 0x6B #define DESC_DVB_CELL_LIST 0x6C #define DESC_DVB_CELL_FREQUENCY_LINK 0x6D #define DESC_DVB_ANNOUNCEMENT_SUPPORT 0x6E #define DESC_DVB_APPLICATION_SIGNALLING 0x6F #define DESC_DVB_ADAPTATION_FIELD_DATA 0x70 #define DESC_DVB_SERVICE_IDENTIFIER 0x71 #define DESC_DVB_SERVICE_AVAILABILITY 0x72 #define DESC_DVB_DEFAULT_AUTHORITY 0x73 #define DESC_DVB_RELATED_CONTENT 0x74 #define DESC_DVB_TVA_ID 0x75 #define DESC_DVB_CONTENT_IDENTIFIER 0x76 #define DESC_DVB_TIMESLICE_FEC_IDENTIFIER 0x77 #define DESC_DVB_ECM_REPETITION_RATE 0x78 #define DESC_DVB_S2_SATELLITE_DELIVERY_SYSTEM 0x79 #define DESC_DVB_ENHANCED_AC3 0x7A #define DESC_DVB_DTS 0x7B #define DESC_DVB_AAC 0x7C /* 0x7D and 0x7E are reserved for future use */ #define DESC_DVB_EXTENSION 0x7F /* 0x80 - 0xFE are user defined */ /* 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) typedef struct { guint n_desc; guint8 data_length; guint8 *data; } GstMPEGDescriptor; GstMPEGDescriptor* gst_mpeg_descriptor_parse (guint8 *data, guint size); void gst_mpeg_descriptor_free (GstMPEGDescriptor *desc); guint gst_mpeg_descriptor_n_desc (GstMPEGDescriptor *desc); guint8* gst_mpeg_descriptor_find (GstMPEGDescriptor *desc, gint tag); guint8* gst_mpeg_descriptor_nth (GstMPEGDescriptor *desc, guint i); #endif /* __GST_MPEG_DESC_H__ */