📄 mpeg_descriptor.c
字号:
/*$Id: mpeg_descriptor.c,v 1.26 2004/11/03 21:00:52 rasc Exp $ DVBSNOOP a dvb sniffer and mpeg2 stream analyzer tool http://dvbsnoop.sourceforge.net/ (c) 2001-2004 Rainer.Scherg@gmx.de (rasc) -- MPEG Descriptors ISO/IEC 13818-1/6 -- all descriptors are returning their length used in buffer$Log: mpeg_descriptor.c,v $Revision 1.26 2004/11/03 21:00:52 rasc - New: "premiere.de" private tables and descriptors (tnx to Peter.Pavlov, Premiere) - New: cmd option "-privateprovider <provider name>" - New: Private provider sections and descriptors decoding - Changed: complete restructuring of private descriptors and sectionsRevision 1.25 2004/08/13 11:05:29 rascMetadata_STD_descriptorRevision 1.24 2004/08/12 22:57:18 rasc - New: MPEG Content Labeling descriptor (H.222.0 AMD1) - New: PES update ITU-T H.222.0 AMD2H.222.0 AMD3 updates startedRevision 1.23 2004/08/01 21:33:08 rascminor TVA stuff (TS 102 323)Revision 1.22 2004/07/26 20:58:03 rascRNT completed.. (TS 102 323)Revision 1.21 2004/07/25 20:12:58 rasc - New: content_identifier_descriptor (TS 102 323) - New: TVA_id_descriptor (TS 102 323) - New: related_content_descriptor (TS 102 323) - New: default_authority_descriptor (TS 102 323)Revision 1.20 2004/07/24 11:44:44 rascEN 301 192 update - New: ECM_repetition_rate_descriptor (EN 301 192 v1.4.1) - New: time_slice_fec_identifier_descriptor (EN 301 192 v1.4.1) - New: Section MPE_FEC EN 301 192 v1.4 - BugfixesRevision 1.19 2004/03/31 21:14:23 rascNew: Spider section pids (snoop referenced section pids),some minor changesRevision 1.18 2004/02/24 23:03:05 rascprivate data of DSMCC::DSIBIOP::ServiceGatewayInformation()IOP::IOR()Revision 1.17 2004/02/20 22:18:39 rascDII complete (hopefully)BIOP::ModuleInfo (damned, who is spreading infos over several standards???)maybe someone give me a hint on the selector_byte info!!!some minor changes...Revision 1.16 2004/01/17 23:06:08 rascminor stuff, some restructs in outputRevision 1.15 2004/01/15 21:27:22 rascDSM-CC stream descriptorsRevision 1.14 2004/01/12 23:05:25 rascno messageRevision 1.13 2004/01/02 16:40:34 rascDSM-CC INT/UNT descriptors completeminor changes and fixesRevision 1.12 2004/01/01 20:35:26 rascPES program stream map, minor descriptor cleanupRevision 1.11 2004/01/01 20:31:22 rascPES program stream map, minor descriptor cleanupRevision 1.10 2004/01/01 20:09:20 rascDSM-CC INT/UNT descriptorsPES-sync changed, TS sync changed,descriptor scopeother changesRevision 1.9 2003/11/26 16:27:45 rasc- mpeg4 descriptors- simplified bit decoding and output functionRevision 1.8 2003/10/27 22:43:49 rasccarousel info descriptor and moreRevision 1.7 2003/10/26 19:06:27 rascno messageRevision 1.6 2003/10/25 19:11:49 rascno messageRevision 1.5 2003/10/24 22:45:04 rasccode reorg...Revision 1.4 2003/10/24 22:17:17 rasccode reorg...Revision 1.3 2003/10/17 18:16:54 rasc- started more work on newer ISO 13818 descriptors- some reorg work startedRevision 1.2 2003/09/09 05:12:45 obiprint format identifier of registration descriptor in ascii.looks quite strange but is nice to see :)Revision 1.1 2003/07/08 19:59:50 rascrestructuring... some new, some fixes,trying to include DSM-CC, Well someone a ISO13818-6 and latest version of ISO 18313-1 to spare?*/#include "dvbsnoop.h"#include "descriptor.h"#include "mpeg_descriptor.h"#include "descriptor_misc.h"#include "private/userdefs.h"#include "strings/dvb_str.h"#include "strings/dsmcc_str.h"#include "misc/hexprint.h"#include "misc/output.h"#include "misc/pid_mem.h"/* determine MPEG descriptor type and print it... return byte length 2004-08-11 updated H.222.0 AMD1*/int descriptorMPEG (u_char *b){ int len; int id; id = (int) b[0]; len = ((int) b[1]) + 2; out_NL (4); out_S2B_NL (4,"MPEG-DescriptorTag: ",id, dvbstrMPEGDescriptorTAG(id)); out_SB_NL (5,"Descriptor_length: ",b[1]); // empty ?? len = ((int)b[1]) + 2; if (b[1] == 0) return len; // print hex buf of descriptor printhex_buf (9, b,len); switch (b[0]) { case 0x02: descriptorMPEG_VideoStream (b); break; case 0x03: descriptorMPEG_AudioStream (b); break; case 0x04: descriptorMPEG_Hierarchy (b); break; case 0x05: descriptorMPEG_Registration (b); break; case 0x06: descriptorMPEG_DataStreamAlignment (b); break; case 0x07: descriptorMPEG_TargetBackgroundGrid (b); break; case 0x08: descriptorMPEG_VideoWindow (b); break; case 0x09: descriptorMPEG_CA (b); break; case 0x0A: descriptorMPEG_ISO639_Lang (b); break; case 0x0B: descriptorMPEG_SystemClock (b); break; case 0x0C: descriptorMPEG_MultiplexBufUtil (b); break; case 0x0D: descriptorMPEG_Copyright (b); break; case 0x0E: descriptorMPEG_MaxBitrate (b); break; case 0x0F: descriptorMPEG_PrivateDataIndicator (b); break; case 0x10: descriptorMPEG_SmoothingBuf (b); break; case 0x11: descriptorMPEG_STD (b); break; case 0x12: descriptorMPEG_IBP (b); break; /* 0x13 - 0x1A DSM-CC ISO13818-6, TR 102 006 */ case 0x13: descriptorMPEG_Carousel_Identifier (b); break; case 0x14: descriptorMPEG_Association_tag (b); break; case 0x15: descriptorMPEG_Deferred_Association_tags (b); break; /* DSM-CC stream descriptors */ // case 0x16: reserved.... case 0x17: descriptorMPEG_NPT_reference (b); break; case 0x18: descriptorMPEG_NPT_endpoint (b); break; case 0x19: descriptorMPEG_stream_mode (b); break; case 0x1A: descriptorMPEG_stream_event (b); break; /* MPEG 4 */ case 0x1B: descriptorMPEG_MPEG4_video (b); break; case 0x1C: descriptorMPEG_MPEG4_audio (b); break; case 0x1D: descriptorMPEG_IOD (b); break; case 0x1E: descriptorMPEG_SL (b); break; case 0x1F: descriptorMPEG_FMC (b); break; case 0x20: descriptorMPEG_External_ES_ID (b); break; case 0x21: descriptorMPEG_MuxCode (b); break; case 0x22: descriptorMPEG_FMXBufferSize (b); break; case 0x23: descriptorMPEG_MultiplexBuffer (b); break; // case 0x24: descriptorMPEG_FlexMuxTiming (b); break; // collision with content_labeling desc. H.222.0 (obsolete??) case 0x24: descriptorMPEG_ContentLabeling(b); break; /* TV ANYTIME, TS 102 323 */ case 0x25: descriptorMPEG_TVA_metadata_pointer (b); break; case 0x26: descriptorMPEG_TVA_metadata (b); break; case 0x27: descriptorMPEG_TVA_metadata_STD (b); break; /* H.222.0 AMD 3 */ case 0x28: descriptorMPEG_AVC_video (b); break; case 0x29: descriptorMPEG_IPMP (b); break; case 0x2A: descriptorMPEG_AVC_timing_and_HRD (b); break; default: if (b[0] < 0x80) { out_nl (0," ----> ERROR: unimplemented descriptor (mpeg context), Report!"); } // descriptor_any (b); descriptor_PRIVATE (b,MPEG); break; } return len; // (descriptor total length)}/* --------------------------------------------------------------- well known MPEG descriptors --------------------------------------------------------------- *//* 0x02 VideoStream descriptor ISO 13818-1 2.6.xx*/void descriptorMPEG_VideoStream (u_char *b){ typedef struct _descVidStream { u_int descriptor_tag; u_int descriptor_length; u_int multiple_frame_rate_flag; u_int frame_rate_code; u_int MPEG_1_only_flag; u_int constrained_parameter_flag; u_int still_picture_flag; // if MPEG_1_only_flag == 1 u_int profile_and_level_indication; u_int chroma_format; u_int frame_rate_extension_flag; u_int reserved_1; } descVidStream; descVidStream d; d.descriptor_tag = b[0]; d.descriptor_length = b[1]; d.multiple_frame_rate_flag = getBits (b, 0, 16, 1); d.frame_rate_code = getBits (b, 0, 17, 4); d.MPEG_1_only_flag = getBits (b, 0, 21, 1); d.constrained_parameter_flag = getBits (b, 0, 22, 1); d.still_picture_flag = getBits (b, 0, 23, 1); out_SB_NL (4,"multiple_frame_rate_flag: ",d.multiple_frame_rate_flag); out_SW_NL (4,"frame_rate_code: ",d.frame_rate_code); out_SB_NL (4,"MPEG_1_only_flag: ",d.MPEG_1_only_flag); out_SB_NL (4,"constrained_parameter_flag: ",d.constrained_parameter_flag); out_SB_NL (4,"still_picture_flag: ",d.still_picture_flag); if (d.MPEG_1_only_flag == 1) { d.profile_and_level_indication = getBits (b, 0, 24, 8); d.chroma_format = getBits (b, 0, 32, 2); d.frame_rate_extension_flag = getBits (b, 0, 34, 1); d.reserved_1 = getBits (b, 0, 35, 5); out_SB_NL (4,"profile_and_level_indication: ",d.profile_and_level_indication); out_SB_NL (4,"chroma_format: ",d.chroma_format); out_SB_NL (4,"frame_rate_extension_flag: ",d.frame_rate_extension_flag); out_SB_NL (6,"reserved_1: ",d.reserved_1); } }/* 0x03 AudioStream descriptor ISO 13818-1 2.6.4*/void descriptorMPEG_AudioStream (u_char *b){ typedef struct _descAudioStream { u_int descriptor_tag; u_int descriptor_length; u_int free_format_flag; u_int ID; u_int layer; u_int variable_rate_audio_indicator; u_int reserved_1; } descAudioStream; descAudioStream d; d.descriptor_tag = b[0]; d.descriptor_length = b[1]; d.free_format_flag = getBits (b, 0, 16, 1); d.ID = getBits (b, 0, 17, 1); d.layer = getBits (b, 0, 18, 2); d.variable_rate_audio_indicator = getBits (b, 0, 20, 1); d.reserved_1 = getBits (b, 0, 21, 3); out_SB_NL (4,"free_format_flag: ",d.free_format_flag); out_SB_NL (4,"ID: ",d.ID); out_SB_NL (4,"layer: ",d.layer); out_SB_NL (4,"variable_rate_audio_indicator: ",d.variable_rate_audio_indicator); out_SB_NL (6,"reserved_1: ",d.reserved_1);}/* 0x04 Hierarchy descriptor ISO 13818-1 2.6.6*/void descriptorMPEG_Hierarchy (u_char *b){ typedef struct _descHierarchy { u_int descriptor_tag; u_int descriptor_length; u_int reserved_1; u_int hierarchy_type; u_int reserved_2; u_int hierarchy_layer_index; u_int reserved_3; u_int hierarchy_embedded_layer_index; u_int reserved_4; u_int hierarchy_channel; } descHierarchy; descHierarchy d; d.descriptor_tag = b[0]; d.descriptor_length = b[1]; d.reserved_1 = getBits (b, 0, 16, 4); d.hierarchy_type = getBits (b, 0, 20, 4); d.reserved_2 = getBits (b, 0, 24, 2); d.hierarchy_layer_index = getBits (b, 0, 26, 6); d.reserved_3 = getBits (b, 0, 32, 2); d.hierarchy_embedded_layer_index = getBits (b, 0, 34, 6); d.reserved_4 = getBits (b, 0, 40, 2); d.hierarchy_channel = getBits (b, 0, 42, 6); out_SB_NL (6,"reserved_1: ",d.reserved_1); out_S2B_NL (4,"hierarchy_type: ",d.hierarchy_type, dvbstrHierarchy_TYPE(d.hierarchy_type)); out_SB_NL (6,"reserved_2: ",d.reserved_2); out_SB_NL (4,"hierarchy_layer_index: ",d.hierarchy_layer_index); out_SB_NL (6,"reserved_3: ",d.reserved_3); out_SB_NL (4,"hierarchy_embedded_layer_index: ",d.hierarchy_embedded_layer_index); out_SB_NL (6,"reserved_4: ",d.reserved_4); out_SB_NL (4,"hierarchy_channel: ",d.hierarchy_channel);}/* 0x05 Registration descriptor ISO 13818-1 2.6.8*/void descriptorMPEG_Registration (u_char *b){ typedef struct _descRegistration { u_int descriptor_tag; u_int descriptor_length; u_long format_identifier; // N add. info } descRegistration; descRegistration d; d.descriptor_tag = b[0]; d.descriptor_length = b[1]; d.format_identifier = getBits (b, 0, 16, 32); out_S2L_NL (4,"format_identifier: ",d.format_identifier,"see: SC29"); indent(+1); printasciiline_buf (4, b+2, 4); indent(-1); print_databytes (4,"add. info:", b+6, d.descriptor_length -4);}/* 0x06 DataStreamAlignment descriptor ISO 13818-1 2.6.11*/void descriptorMPEG_DataStreamAlignment (u_char *b){ typedef struct _descDataStreamAlignment { u_int descriptor_tag; u_int descriptor_length; u_int alignment_type; } descDataStreamAlignment; descDataStreamAlignment d; d.descriptor_tag = b[0]; d.descriptor_length = b[1]; d.alignment_type = b[2]; out_SB_NL (4,"alignment_type: ",d.alignment_type); out (4," as VideoStream: (= %s)", dvbstrDataStreamVIDEOAlignment_TYPE(d.alignment_type)); out (4," as AudioStream: (= %s)", dvbstrDataStreamAUDIOAlignment_TYPE(d.alignment_type)); out_NL (4);}/* 0x07 Target Background Grid descriptor ISO 13818-1 2.6.12*/void descriptorMPEG_TargetBackgroundGrid (u_char *b){ typedef struct _descTBGG { u_int descriptor_tag; u_int descriptor_length; u_int horizontal_size; u_int vertical_size; u_int aspect_ratio_information; } descTBGG; descTBGG d; d.descriptor_tag = b[0]; d.descriptor_length = b[1]; d.horizontal_size = getBits (b, 0, 16, 14); d.vertical_size = getBits (b, 0, 30, 14); d.aspect_ratio_information = getBits (b, 0, 44, 4); out_S2W_NL (4,"horizontal_size: ",d.horizontal_size,"pixel"); out_S2W_NL (4,"vertical_size: ",d.vertical_size,"pixel"); out_S2B_NL (4,"aspect_ratio_information: ", d.aspect_ratio_information, dvbstrAspectRatioInfo_FLAG(d.aspect_ratio_information));}/* 0x08 Video Window descriptor ISO 13818-1 2.6.14*/void descriptorMPEG_VideoWindow (u_char *b){ typedef struct _descVidWin { u_int descriptor_tag; u_int descriptor_length; u_int horizontal_offset; u_int vertical_offset; u_int window_priority; } descVidWin; descVidWin d; d.descriptor_tag = b[0]; d.descriptor_length = b[1]; d.horizontal_offset = getBits (b, 0, 16, 14); d.vertical_offset = getBits (b, 0, 30, 14); d.window_priority = getBits (b, 0, 44, 4); out_S2W_NL (4,"horizontal_offset: ",d.horizontal_offset,"pixel"); out_S2W_NL (4,"vertical_offset: ",d.vertical_offset,"pixel"); out_S2B_NL (4,"window_priority: ",d.window_priority,"(15 = highest)");}/* 0x09 CA descriptor (condition access)*/void descriptorMPEG_CA (u_char *b){ /* IS13818-1 2.6.1 */ typedef struct _descCA { u_int descriptor_tag; u_int descriptor_length; u_int CA_system_ID; u_int reserved; u_int CA_PID; // private data bytes } descCA; descCA d; int len; d.descriptor_tag = b[0]; d.descriptor_length = b[1]; d.CA_system_ID = getBits (b, 0, 16, 16); d.reserved = getBits (b, 0, 32, 3); d.CA_PID = getBits (b, 0, 35, 13);⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -