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[转]数*电视业务PSI/SI**系列_With 6jtt_百度空间
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Packet n鍦ㄥ疄闄呬娇鐢ㄤ腑,鍥犱负TS娴佸凡 忓唴閮ㄥ叿鏈夊緢寮虹殑閿欒澶* 悊鑳藉姏,鎵�互涓�埇浣跨敤杈冨 勬槸188瀛楄*涓�釜鍖呯殑鏍煎紡,20 4瀛楄*涓�釜鍖呯殑鏍煎紡鎹涓 埇鍦ㄩ珮娓呰*鐩腑浣跨敤杈冨 . 鎵�湁鐨凱acket鏍煎紡閮芥槸缁熶竴鐨 �鍖呮*涓�釜Packet header鍜**acket datas.鍏朵腑Packet header鍖*惈浜嗗悓姝ュ瓧鑺�璇ュ瓧 傚浐瀹*槸0x47,琛ㄧず杩欎釜鍖呯殑 版嵁寮�鏄*殑),璇*acket鐨 勫敮涓�彿鐮�鍗*ID)鍜屽叾**竴 涗俊*�鏍煎紡濡備笅(鐢–鏍煎紡琛 ㄧず)typedef struct{ unsigned sync_byte:8; unsigned transport_error_indicator:1; unsigned payload_unit_start_indicator:1; unsigned transport_priority:1; unsigned PID:13; unsigned transport_scrambling_control:2; unsigned adaptation_field_control:2; unsigned continuity_counter:4;}PACKET_HEADER;*ヤ笂缁 瀯鍒氬ソ鍗犵敤32 bits,鍗�涓瓧鑺�鍥犳涓�釜TS娴 殑Packet澶撮儴鐨�瀛楄*鏄痟eader淇 伅,鍒嗘瀽璇eader淇℃伅灏卞彲*ョ 煡閬撳綋鍓峆acket鐨勫睘鎬�鍓╀笅鐨 �84瀛楄*鏈夊彲鑳芥槸Video鏁版嵁,涔 熸湁鍙兘鏄疉udio鏁版嵁,涔熸湁鍙 兘鏄疍VB SI淇℃伅,鎬庝箞鍖哄垎鍛�鍏跺疄寰* 畝鍗�灏辨槸鍒╃敤header涓*殑PID淇 伅.涓婁竴绔犺浜哖AT鏄*鐩叧 鑱旇〃,瀹冪殑PID鏄�x0000.杩欎釜PID灏 槸瀵瑰簲杩欓噷 header鐨凱ID.鎹*彞璇濆氨鏄,濡傛 鎴戜滑鍙*幇涓�釜Packet鐨凱ID绛変 0x0000,*ｄ箞璇*槑杩欎釜Packet鏄疍VB 鐨凱AT琛ㄦ牸鑰屼笉鏄�Video鏁版嵁鎴 *�Audio鏁版嵁.瀹為檯涓�鍦ㄤ俊鍙风 紪鐮佹垚TS鐮佹祦鐨勬椂鍊�涓嶅悓鑺 傜洰鐨刅ideo,Audio绛夋暟鎹兘鍒嗛厤 嗕笉鍚岀殑PID.渚嬪,涓�釜鑺傜洰 変袱璺疺ideo,涓夎矾Audio,*ｄ箞鍒嗛 PID鐨勬椂鍊欏彲鑳芥槸Video 1==0x100,Video 2==0x101,Audio 1==0x102,Audio 2==0x103, Audio 3==0x104,杩欐牱浼犺*鐨凾S鐮佹祦涓* PID灏卞彲鑳芥湁*ヤ笂鐨凱ID.鍥犳 ,濡傛灉鎴戜滑闇�鍦ㄧ▼搴忎腑杩 护鍑虹涓�矾Video鍜岀浜岃矾 Audio灏卞彲*ヨ繖鏍峰鐞嗕簡(浼 鐮佹弿杩�: void Process_Packet(unsigned char*buff) { int PID=GETPID(buff); if(PID==0x100) { SaveToVideoBuffer(buff+4); } else if(PID==0x103) { SaveToAudioBuffer(buff+4); } else { printf("unknown PID!n"); } }鐜�鍦ㄧ殑闂鏄�缂*爜鐨勬椂 欏垎閰嶅ソ鐨凱ID,鍦ㄨВ鐮佺殑鏃跺 鏄�涔*煡閬撲粈涔圥ID瀵瑰簲* 箞鏁版嵁鍛�杩欏氨鏄疍VB SI琛ㄦ牸鐨勫垎鏋愪笌澶*悊浜�璇峰 弬鑰冪涓夌珷.杩欓噷鍏*湅涓�釜 為檯鐨凾S鐮佹祦鐨勪緥瀛�杩欓噷 勬暟鎹槸鐢║ltraEdit鐢�6杩涘埗鏍 紡鎵撳紑TS鐮佹祦鏂囦欢寰楀埌鐨� 囦欢鏄疶aiwan-551.ts.杩欓噷*呬粎鎴彇浜�涓狿acke t鐨勪俊*�璇锋敞鎰忓浘涓*敤绾㈣ 鏍囨敞鐨勯儴鍒�杩欏氨鏄疶S娴丳ac ket鐨�涓瓧鑺傜殑澶*俊*�杩欎 TS娴佹槸閲囩敤姣忎釜鍖*叡188瀛楄 *鐨勬牸寮�鍥犱负涓や釜澶*俊* 闂撮殧鏄�88涓瓧鑺�绗竴涓�x 47鍒扮浜屼釜0x47鐨勯棿闅�.*ュ悗 勬墍鏈夌殑Packet閮藉皢鏄�88瀛楄* 勬牸寮�杩欐槸 DVB TS鏍囧噯瑙勫畾鐨勫浐瀹氬ぇ灏�*ｄ 箞杩欎笁涓寘鍒嗗埆鍖*惈鐨勬槸 *�箞鏁版嵁,涓嬮潰鎴戜滑鍙互鑷 繁鍒嗘瀽涓�笅. 鍏�鐪嬬涓�釜鍖�澶*俊*暟 槸"0x47 0x07 0xe5 0x12",鍒**宸茬粡*ラ亾浜�header淇 伅閮芥槸鎸変綅鎿嶄綔鐨�杩欏氨鏄 负*�箞TS鐮佹祦涔熷彲*ュ彨鍋氫 娴佺殑鍘熷洜),鐗瑰埆瑕佹敞鎰忕殑 畾涔夊拰浼犺*鐨勬椂鍊欓兘鏄疢 SB first,涔熷氨鏄,鍏**鐜扮殑浣嶆 鏁版嵁鐨勬渶楂樹綅.鍏*浆鍖*垚2 涘埗鏍煎紡: 01000111 00000111 11100101 00010010璇峰鐓т笂闈㈢殑PACKET_HEADER缁 撴瀯:typedef struct{ unsigned sync_byte:8; unsigned transport_error_indicator:1; unsigned payload_unit_start_indicator:1; unsigned transport_priority:1; unsigned PID:13; unsigned transport_scrambling_control:2; unsigned adaptation_field_control:2; unsigned continuity_counter:4;}PACKET_HEADER;*ｄ箞瀵 *収涓�笅,鎴戜滑鍙互鍙*幇: sync_byte=01000111,灏辨槸0x47,杩欐槸DVB TS瑙勫畾鐨勫悓姝ュ瓧鑺�鍥哄畾鏄� x47. transport_error_indicator=0,琛ㄧず褰撳*鍖 病鏈夊彂鐢熶紶杈撻敊璇� payload_unit_start_indicator=0,鍚箟璇峰弬 僆SO13818-1鏍囧噯鏂囨。 transport_priority=0,琛ㄧず褰撳*鍖呮槸 庝*鍏*骇. PID=00111 11100101鍗�x07e5,杩欎唬琛ㄦ槸*�箞鍛 �鏆傛椂杩樹笉*ラ亾(瀹為檯涓婃槸V ideo PID,鍙傝�涓嬪浘) transport_scrambling_control=00,琛ㄧず鑺傜洰 娌℃湁鍔犲瘑 adaptation_field_control=01鍗�x01,鍏蜂綋鍚 箟璇峰弬鑰僆SO13818-1 continuity_counte=0010鍗�x02,琛ㄧず褰撳* 浼犻�鐨*浉鍚岀被鍨嬬殑鍖呮槸绗 涓緷姝ょ被鎺�鍐嶇湅涓�笅绗 涓寘"0x47 0x07 0xe5 0x13",2杩涘埗鏄�1000111 00000111 11100101 00010011 sync_byte=01000111,灏辨槸0x47,杩欐槸DVB TS瑙勫畾鐨勫悓姝ュ瓧鑺�鍥哄畾鏄� x47. transport_error_indicator=0,琛ㄧず褰撳*鍖 病鏈夊彂鐢熶紶杈撻敊璇� payload_unit_start_indicator=0,鍚箟璇峰弬 僆SO13818-1鏍囧噯鏂囨。 transport_priority=0,琛ㄧず褰撳*鍖呮槸 庝*鍏*骇. PID=00111 11100101鍗�x07e5,杩欎唬琛ㄦ槸*�箞鍛 �鏆傛椂杩樹笉*ラ亾(瀹為檯涓婃槸V ideo PID,鍙傝�涓嬪浘) transport_scrambling_control=00,琛ㄧず鑺傜洰 娌℃湁鍔犲瘑 adaptation_field_control=01鍗�x01,鍏蜂綋鍚 箟璇峰弬鑰僆SO13818-1 continuity_counte=0011鍗�x03,琛ㄧず褰撳* 浼犻�鐨*浉鍚岀被鍨嬬殑鍖呮槸绗 涓�娉ㄦ剰鍒颁簡鍚�*ヤ笂涓や釜 呯殑PID閮芥槸0x07e5,鎵�互杩欓噷鐨 ontinuity_counte灏遍�澧炰竴娆�绗笁 涓寘鏄�0x47 0x07 0xf1 0x18",2杩涘埗鏄�1000111 00000111 11110001 00011000. sync_byte=01000111,灏辨槸0x47,杩欐槸DVB TS瑙勫畾鐨勫悓姝ュ瓧鑺�鍥哄畾鏄� x47. transport_error_indicator=0,琛ㄧず褰撳*鍖 病鏈夊彂鐢熶紶杈撻敊璇� payload_unit_start_indicator=0,鍚箟璇峰弬 僆SO13818-1鏍囧噯鏂囨。 transport_priority=0,琛ㄧず褰撳*鍖呮槸 庝*鍏*骇. PID=00111 11100101鍗�x07f1,杩欎唬琛ㄦ槸*�箞鍛 �鏆傛椂杩樹笉*ラ亾(瀹為檯涓婃槸A udio PID,鍙傝�涓嬪浘) transport_scrambling_control=00,琛ㄧず鑺傜洰 娌℃湁鍔犲瘑 adaptation_field_control=01鍗�x01,鍏蜂綋鍚 箟璇峰弬鑰僆SO13818-1 continuity_counte=1000鍗�x08,琛ㄧず褰撳* 浼犻�鐨*浉鍚岀被鍨嬬殑鍖呮槸绗 涓鐪*В鐮佺▼搴�lt;<Seekfor MPEG-2 decoder>>璇诲彇璇ユ枃*剁殑缁撴 : 涓婂浘鎴戜滑鍙互鍙*幇,Taiwan-551.ts鏈変竴涓*鐩彨"DIMO",瀹冪殑V ideo <a href="http://www.headphonesell.com/products_new.html"><strong>monster beats dr dre</strong></a> PID鏄�x07e5,Audio PID鏄�x07e6杩樻湁涓�釜鑺傜洰鍙�Ser vice 1",娌℃湁Video PID,瀹冪殑Audio PID鏄�x07f1(璇*槑鏄竴涓箍鎾 *鐩�闈炵數瑙嗚*鐩�杩欎釜鏁版 鍒氬ソ鍜屾垜*垰鎵嶇殑鍒嗘瀽鏄 惢鍚*殑.浣�鏄垜鎯冲ぇ瀹惰繕 夌枒闂�涓轰粈涔�x07e5*ｈ〃Video PID,0x07e6*ｈ〃鍏朵腑涓�釜Audio PID鍛�杩欏氨鏄垰鎵嶆彁鍒扮殑,杩 槸TS娴佸湪缂*爜鐨勬椂鍊欏氨鍒嗛 濂戒簡鐨�浣嗘槸,鍦ㄨВ鐮佺殑鏃跺 �鏄�涔*煡閬�x07e5灏变唬琛ㄧ殑 鏄疺ideo鑰屼笉鏄疉udio鍛�杩欏氨鏄 涓夌珷鐨勫唴瀹�DVB SI/PSI鍒嗘瀽鍜屽鐞� 绗笁绔�DVB SI/PSI鍒嗘瀽鍜屽鐞*I鏄*pecific Information鐨*畝绉�PSI鏄痯rogram Specific Information锛庤鏈哄埗鍏佽锛わ级锛 紶閫佸悇绉嶅悇鏍风殑璁伅锛屾 濡傝*鐩悕绉帮紝鐢佃鍙板悕绉 紝鍚*锛帮缉锛わ紝绉佹湁淇℃伅 锛岀敋鑷冲崟鐙紶閫佹暟鎹疄鐜 暟鎹�淇＄瓑锛庤繖浜涘姛鑳界殑 炵幇閮藉綊鍔熶簬SI/PSI. 鍦―VB 鏍囧噯涓紝瀹氫箟浜嗕竴涓爣鍑 殑PID鐢ㄦ潵瀹炵幇SI/PSI.杩欎簺PID鏄郴缁熶繚鐣欑殑锛屽 姝わ激锛讹饥缂*爜鐨勬椂鍊欏苟涓 嶄細鐢ㄨ繖浜涳及锛╋激鍋氫负Video PID鎴*� Audio PID鎴*�鍏朵粬锛帮缉锛わ紟鍦ㄤ竴 畝鍗*殑瑙ｅ鐢ㄧ▼搴忎腑锛屽 闇�鎻愪緵澶*悊PAT,PMT琛ㄦ牸鐨 *▼搴忓嵆鍙疄鐜拌В澶嶇敤锛屽綋 跺鏋滈渶瑕佹洿鍙嬪ソ鐨*晫闈* 瀹炵幇鏇村鏉傜殑鍔熻兘锛*锛 ｏ肌锛夊垯蹇呴』澶*悊鍏朵粬鐨勶 锛╄〃锛庡湪杩欓噷*呬粎鍒嗘瀽PAT, PMT,SDT琛ㄦ牸锛屽叾*朣I琛ㄦ牸鐨勫垎 鏋愶紝璇峰弬鑰僆SO13818-1(MPEG-2绯荤粺灞傛爣鍑�鍜*N300468(DVB SI鏍囧噯)鏂囨。锛�DVB瀹氫箟鐨凷I淇 暀鐨凱ID鍒嗗埆鏄�涓婅〃鏍肩殑PID 辨槸锛わ级锛繚鐣欑殑锛帮缉锛わ 紝鍒嗛厤鐨勫叾**及锛╋激涓�畾 嶄細鍗犵敤杩欎簺锛帮缉锛わ紟瑙ｅ 鐢ㄧ▼搴忛渶瑕佷娇鐢ㄥ埌鐨勮〃鏍 煎彧鏈塒AT,PMT,SDT,鑰岋迹锛″簲鐢ㄨ繕 闇�浣跨敤CAT,EPG搴旂敤杩橀渶瑕佷 鐢∟IT,EIT,TDT,TOT绛夎〃鏍�鎵�互鍦 渶瑕佽В澶嶇敤鐨勬椂鍊欙紝浼唬 侀渶瑕佽繖鏍峰啓: void Process_Packet(unsigned char*buff) { int PID=GETPID(buff); if(PID==0x0000) { Process_PAT(buff+4); } else if(PID==......) { } else { printf("Unknown PID!"); } } 鎵�湁鐨勮〃鏍奸兘寮�浜嶱acket涓 *殑184瀛楄*鐨勬暟鎹儴鍒*紝浣 湁鐨勬椂鍊欎竴涓〃鏍兼病鏈�84 楄*锛岃繖鏃跺湪Packet涓氨鍙兘 掑叆涓�簺鏃犳晥淇℃伅鐢ㄦ潵濉 厖浣挎暣涓�Packet渚濈劧淇濇寔鏄�88 瀛楄*锛庝篃鍙兘鐢ㄥご淇℃伅涓 *殑payload_unit_start_indicator鏍囧織琛ㄦ牸 鏈変釜鍋忕Щ浣嶇疆锛*綋 payload_unit_start_indicator=0琛ㄧず琛ㄦ牸 版嵁鐩*帴*嶱acket鍖虹殑绗洓涓 瓧鑺傚紑濮嬶紝鍚﹀垯琛ㄧず鏈変竴 亸绉婚噺浣嶇疆寮�,鍏蜂綋璇 弬鑰僆SO13818-1,绗�瀛楄*鍒板亸绉婚噺闂寸殑鏁版 嵁鏄郴缁熷～鍏呯殑鏃犳晥鏁版嵁 夛紟 涓嬮潰閽*瑙ｅ鐢ㄧ▼搴忚缁 垎鏋愪竴涓婸AT,PMT鍜*DT涓夌被琛ㄦ 鐨勬牸寮忥紟PAT, Program Association Table,鑺傜洰鍏*仈琛�PAT琛ㄦ惡甯︿ 涓嬩俊*�(1) TS娴侊缉锛�-- transport_stream_id,璇ワ缉锛ゆ爣蹇楀敮涓 �殑娴侊缉锛�2) 鑺傜洰棰戦亾鍙�- program_number,璇ュ彿鐮佹爣蹇楋即锛虫 涓*殑涓�釜棰戦亾锛岃棰戦亾鍙 互鍖*惈寰*鐨勮*鐩�鍗冲彲* ュ寘鍚涓猇ideo PID鍜*udio PID)(3) PMT鐨凱ID--- program_map_PID,琛ㄧず鏈閬撲娇鐢ㄧ 鍝釜PID鍋氫负PMT鐨勶及锛╋激锛屽 洜涓哄彲*ユ湁寰*鐨勯閬擄紝 犳锛わ级锛㈣瀹*MT鐨凱ID鍙互 鐢辩敤鎴疯嚜宸卞畾涔夛紟PAT琛ㄥ畾 夊涓� 鍚勫瓧娈靛惈涔夊涓� table_id:8 bits,鏍囧織鏈〃鏍肩殑绫诲瀷锛屽簲 璇ユ槸0x00 section_syntax_indicator:1 bit,娈佃娉曟爣蹇楋紝搴旇鏄�1' '0':鍥哄畾鐨�0'锛岃繖鏄负浜嗛槻 *拰ISO13818Video娴佹牸寮忎腑鐨勬帶鍒 跺瓧鍐茬獊鑰岃缃殑锛�Reserved: 濈暀鐨�bits,淇濈暀浣嶄竴鑸兘鏄 0' section_length:12bits鐨勬澶у皬锛屽崟浣 嶆槸Bytes. transport_stream_id:16bits鐨勫綋鍓嶆祦锛╋ 激锛岋激锛讹饥鍐*敮涓�(浜嬪疄涓 緢澶氶兘鏄嚜瀹氫箟鐨凾S ID) version_number:5bits鐗*湰鍙风爜锛屾爣娉 ㄥ綋鍓嶈*鐩殑鐗*湰锛庤繖鏄 闈炲父鏈夌敤鐨勫弬鏁帮紝褰撴娴 埌杩欎釜瀛楁鏀瑰彉鏃讹紝璇*槑 锛达汲娴佷腑鐨勮*鐩凡缁忓彉鍖* 簡锛岀▼搴忓繀椤婚噸鏂版悳绱㈣* 紟 current_next_indicator:1bit:褰撳*杩樻槸鏈 潵浣跨敤鏍囧織绗�涓�埇鎯*喌涓 嬩负'0' section_number:8bits褰撳*娈靛彿鐮�last_s ection_number:8bits鏈�悗娈靛彿鐮�section _number鍜*ast_section_number鐨勫姛鑳芥槸 揚AT鍐*>184瀛楄*鏃讹紝PAT琛ㄤ 細鍒嗘垚澶氫釜娈�sections),瑙ｅ鐢 ▼搴忓繀椤诲湪鍏ㄩ儴鎺ユ敹瀹屾垚 鍚庡啀杩涜PAT鐨勫垎鏋� *巉or()寮�锛屽氨鏄弿杩颁簡褰 *娴佷腑鐨勯閬撴暟鐩�N),姣忎竴 涓閬撳搴旂殑PMT PID鏄粈涔*紟瑙ｅ鐢ㄧ▼搴忛渶 佸拰涓婂浘绫讳技鐨勫惊鐜潵鎺ユ 鎵�湁鐨勯閬撳彿鐮佸拰瀵瑰簲鐨 凱MT PID,骞舵妸杩欎簺淇℃伅鍦ㄧ紦鍐插尯 繚瀛樿捣鏉ワ紟鍦ㄥ悗閮ㄧ殑澶* 悊涓渶瑕佷娇鐢ㄥ埌PMT PID. CRC_32:鏈鐨凜RC鏍*獙鍊硷紝涓� 鏄細蹇界暐鐨勶紟N鏄竴涓彉閲 忥紝璁＄畻鏂规硶鏄疦=(section_length-9)/4. *庝互涓婂垎鏋*垜*彲*ュ彂鐜 PAT琛ㄤ富瑕佸寘鍚閬撳彿鐮佸拰 忎竴涓閬撳搴旂殑PMT鐨凱ID鍙 爜,杩欎簺淇℃伅鎴戜滑鍦ㄥ鐞哖AT 琛ㄦ牸鐨勬椂鍊欎細淇濆瓨璧锋潵,* 悗浼氫娇鐢ㄥ埌杩欎簺鏁版嵁.渚嬪 鎴戜滑鍙互瀹氫箟杩欐牱鐨勬暟鎹 粨鏋勪繚瀛樿繖浜涗俊*� typedef struct { int channel_number; int pmt_pid; }PMT_ITEM; PMT_ITEM pmt[64];PMT, Program Map Table,鑺傜洰褰卞*琛�濡傛灉涓�釜TS 娴佷腑鍚湁澶氫釜棰戦亾,*ｄ箞灏 細鍖*惈澶氫釜PID涓嶅悓鐨凱MT琛� �祴鏄惁PMT鐨勪吉*ｇ爜濡備笅: void Process_Packet(unsigned char*buff) { int I; int PID=GETPID(buff); if(PID==0x0000) { Process_PAT(buff+4); } else if(PID==.....) { } else { for(i=0;i<64;i++) { if(PID==pmt[i].pmt_pid) { Process_PMT(buff+4); break; } } } }PMT琛ㄤ腑鍖*惈鐨勬暟鎹涓�(1) 褰撳*棰戦亾涓寘鍚殑鎵�湁Video 鏁版嵁鐨凱ID(2) 褰撳*棰戦亾涓寘鍚殑鎵�湁Audio 鏁版嵁鐨凱ID(3) 鍜屽綋鍓嶉閬撳叧鑱斿湪涓�捣鐨 叾**暟鎹殑PID(濡傛暟瀛楀箍鎾� 鏁版嵁閫氳绛変娇鐢ㄧ殑PID)PMT瀹氫 濡備笅:鍚勫瓧娈靛惈涔夊涓� table_id:8bits鐨処D,搴旇鏄�x02 section_syntax_indicator:1bit鐨勬璇硶鏍 囧織,搴旇鏄�1' '0':鍥哄畾鏄�0',濡傛灉涓嶆槸璇*槑 版嵁鏈夐敊. reserved:2bits淇濈暀浣�搴旇鏄�00' section_length:16bits娈甸暱搴�*巔rogram_n umber寮�,鍒癈RC_32(鍖*惈)鐨勫瓧鑺 �鏁� program_number:16bits鐨勯閬撳彿鐮�琛 ず褰撳*鐨凱MT鍏*仈鍒扮殑棰戦亾. *彞璇濆氨鏄,褰撳*鎻忚*鐨 槸program_number棰戦亾鐨勪俊*� reserved:2bits淇濈暀浣�搴旇鏄�00' version_number:鐗*湰鍙风爜,濡傛灉PMT鍐 *鏈夋洿鏂�鍒檝ersion_number浼氶� �閫氱煡瑙ｅ鐢ㄧ▼搴忛渶瑕侀噸 版帴鏀惰*鐩俊*�鍚﹀垯version_n umber鏄浐瀹氫笉鍙樼殑. current_next_indicator:褰撳*鏈潵鏍囧織 绗�涓�埇鏄� section_number:褰撳*娈靛彿鐮�last_sectio n_number:鏈�悗娈靛彿鐮�鍚箟鍜**AT 涓*殑瀵瑰簲瀛楁鐩稿悓,璇峰弬鑰 AT閮ㄥ垎. reserved:3bits淇濈暀浣�涓�埇鏄�000'. PCR_PID:13bits鐨凱CR PID,鍏蜂綋璇峰弬鑰僆SO13818-1,瑙ｅ鐢ㄧ▼搴忎笉浣跨敤璇ュ弬鏁 �reserved:4bits淇濈暀浣�涓�埇鏄�000 0'program_info_length:鑺傜洰淇℃伅闀垮害( 涔嬪悗鐨勬槸N涓弿杩扮缁撴瀯,涓 �埇鍙互蹇界暐鎺�杩欎釜瀛楁 变唬琛ㄦ弿杩扮鎬荤殑闀垮害,鍗曚 綅鏄疊ytes)绱ф帴鐫�氨鏄閬撳唴 ㄥ寘鍚殑鑺傜洰绫诲瀷鍜屽搴旂 殑PID鍙风爜浜�stream_type:8bits娴佺被鍨 �鏍囧織鏄疺ideo杩樻槸Audio杩樻槸鍏 粬鏁版嵁.reserved:3 bits淇濈暀浣�elementary_PID:13bits瀵瑰簲 勬暟鎹甈ID鍙风爜(濡傛灉stream_type鏄 ideo,*ｄ箞杩欎釜PID灏辨槸Video <a href="http://##############.thelambda.sk/displayimage.php?pos=-54"><strong>Their brains GHD Kiss Pink IV Styler | Cheap GHD Hair Straighteners</strong></a> PID,濡傛灉stream_type鏍囧織鏄疉udio,*ｄ 箞杩欎釜PID灏辨槸Audio PID)reserved:4 bits淇濈暀浣�ES_info_length:鍜宲rogram_inf o_length绫讳技鐨勪俊*暱搴�鍏跺悗 鏄疦2涓弿杩扮鍙�CRC_32:32bits娈垫 湯灏炬槸鏈鐨凜RC鏍*獙鍊�涓� 埇蹇界暐.*庝互涓婄殑鍒嗘瀽鍙互 嬪*,鍙鎴戜滑澶*悊浜哖MT,* 箞鎴戜滑灏卞彲*ヨ幏鍙**閬撲腑 �湁鐨凱ID淇℃伅,渚嬪褰撳*棰戦 亾鍖*惈澶氬皯涓猇ideo,鍏卞灏戜釜 Audio,鍜屽叾**暟鎹�杩樿兘*ラ亾 忕鏁版嵁瀵瑰簲鐨凱ID鍒嗗埆鏄 涔�杩欐牱濡傛灉鎴戜滑瑕侀�鎷╁ 涓竴涓猇ideo鍜*udio鏀剁湅,*ｄ箞 鍙渶瑕佹妸瑕佹敹鐪嬬殑鑺傜洰鐨 ideo PID鍜*udio PID淇濆瓨璧锋潵,鍦ㄥ鐞哖acket鐨勬 鍊欒繘琛岃繃婊ゅ嵆鍙疄鐜�姣旇 鍏ㄩ潰瀹炵幇瑙ｅ鐢ㄧ殑浼唬鐮 佸涓�int Video_PID=0x07e5,Audio_PID=0x07e6;void Process_Packet(unsigned char*buff){ int I; int PID=GETPID(buff); if(PID==0x0000) { Process_PAT(buff+4); } else if(PID==Video_PID) { SaveToVideoBuffer(buff+4); } else if(PID==Audio_PID) { SaveToAudioBuffer(buff+4); } else{ for( i=0;i<64;i++) { if(PID==pmt[i].pmt_pid) { Process_PMT(buff+4); Break; } }} }*ヤ笂浼唬鐮佸彲*ュ疄鐜板熀鏈 殑瑙ｅ鐢�妫�祴鎵�湁鐨勯閬 �妫�祴鎵�湁stream鐨凱ID,閫夋嫨鐗 畾鐨勮*鐩繘琛屾挱鏀�鍙璇 彇姣忎釜Packet鐨�88瀛楄*鐨勫唴瀹 鐒跺悗姣忔閮借皟鐢≒rocess_Packet() 鍗冲彲瀹炵幇*�崟鐨勮В澶嶇敤.* 粛鍒拌繖閲�鎴戜滑灏卞彲*ユ�缁 竴涓婦VB鎼滃彴鐨勫師鐞嗕簡.(濂� 楄�*惉!) 鏈洪《鐩掑厛璋冩暣楂橀澶村埌涓 釜鍥哄畾鐨勯鐜�濡�98MHZ),濡傛灉 姝ら鐜囨湁鏁板瓧淇″彿,鍒機OFDM鑺 墖(濡侻T352)浼氳嚜鍔ㄦ妸TS娴佹暟鎹 紶閫佺粰MPEG- 2 decoder. MPEG-2 decoder鍏*繘琛屾暟鎹殑鍚屾,涔熷 氨鏄瓑寰*畬鏁寸殑Packet鐨勫埌鏉 鐒跺悗寰幆鏌ユ壘鏄惁鍑虹幇PID= = 0x0000鐨凱acket,濡傛灉鍑虹幇浜�鍒欓 涓婅繘鍏ュ垎鏋*AT鐨勫鐞�鑾峰 浜嗘墍鏈夌殑PMT鐨凱ID.鎺ョ潃寰幆 ユ壘鏄惁鍑虹幇PMT,濡傛灉鍙*幇 �鍒欒嚜鍔ㄨ繘鍏*MT鍒嗘瀽,鑾峰彇 ラ娈垫墍鏈夌殑棰戦亾鏁版嵁骞朵 繚瀛�濡傛灉娌℃湁鍙*幇PAT鎴*� ℃湁鍙*幇PMT,璇*槑璇ラ娈垫病鏈 変俊鍙�杩涘叆涓嬩竴涓鐜囨壂 � *庝互涓婃弿杩板彲*ョ湅鍑�鏈洪 鐩掓悳绱㈤鐜囨槸闅忔満鍙*敓鐨 瑕佷娇姣忔鏈洪《鐩掗兘鑳芥悳绱 *埌淇″彿,鍒欒姹俆S娴佹瘡闅斾竴 娈垫椂闂村氨鍙戦�涓�PAT鍜**MT. 嬪疄涓奃VB浼犺*绯荤粺灏辨槸杩欎 鍋氱殑.鍥犳鏃犺浣曟椂鎺ュ叆缁 *绯荤粺,绯荤粺閮借兘椹笂鎼滅 鍒拌*鐩苟姝ｇ‘瑙ｅ鐢ㄥ疄鐜 版挱鏀�涓嶄粎**姝�鍏朵粬鏁 嵁涔熼兘鏄氦鏇夸紶閫佺殑.姣斿 绗竴涓狿acket鍙兘鏄疨AT,绗簩涓 狿acket鍙兘鏄疨MT,鑰岀涓変釜Packet 鍙兘鏄疺ideo 1,绗洓涓狿acket鍙兘鏄疺ideo 2,鍙绯荤粺浼犺*閫熷害瓒冲蹇 �灏辨槸绉颁箣涓�鐮佺巼"鐨勪笢涓 ,瀹炵幇瀹炴椂鎾斁鏄病鏈変换 曢棶棰樼殑. 鍒拌繖閲岃櫧鐒跺疄鐜颁簡瑙ｅ鐢 浣嗗彲*ョ湅鍑�浣跨敤鐨凱ID閮芥 鏋嚗鐨勬暟瀛�濡傛灉璋冨彴瑕佺 鎴疯嚜宸辫*鍏ユ暟瀛楅偅鍙槸澶 夯鐑︿簡,鑰屼笖杩樺鏄撹*鍏ラ 璇�鎿嶄綔闈炲父涓嶇洿瑙�鍗充娇 鍋*垚涓�釜鑿滃崟璁╃敤鎴烽�鎷 篃鏄潪甯哥殑鍛嗘澘.閽*杩欎釜 闂,DVB绯荤粺鎻愬*浜嗕竴涓猄DT ㄦ牸,璇ヨ〃鏍兼爣蹇椾竴涓*鐩 殑鍚嶇О,骞朵笖鑳藉拰PMT涓*殑PID鑱 郴璧锋潵,杩欐牱鐢ㄦ埛灏卞彲*ラ� 杩囩洿鎺ラ�鎷╄*鐩悕绉版潵閫 嫨鑺傜洰浜�SDT, Service description section,鏈嶅姟鎻忚*娈�SDT鍙互鎻愪 緵鐨勪俊*寘鎷�(1) 璇ヨ*鐩槸鍚﹀湪鎾斁涓�2) 璇ヨ*鐩槸鍚﹁鍔犲瘑(3) 璇ヨ*鐩殑鍚嶇ОSDT瀹氫箟濡備笅: 勫瓧娈靛畾涔夊涓� table_id:8bits鐨処D,鍙互鏄�x42,琛ㄧず 鎻忚*鐨勬槸褰撳*娴佺殑淇℃伅,涔 彲*ユ槸0x46,琛ㄧず鏄叾**祦鐨 俊*�EPG浣跨敤姝ゅ弬鏁� section_syntax_indicator:娈佃娉曟爣蹇� �埇鏄�1' reserved_future_used:2bits淇濈暀鏈潵浣跨 敤 reserved:1bit淇濈暀浣�闃叉鎺у埗瀛 啿绐�涓�埇鏄�0',涔熸湁鍙兘鏄 1' section_length:12bits鐨勬闀垮害,鍗曚綅 疊ytes,*巘ransport_stream_id寮�,鍒癈 RC_32缁撴潫(鍖*惈) transport_stream_id:16bits褰撳*鎻忚*鐨勬 祦ID reserved:2bits淇濈暀浣�version_number:5bits *増鏈彿鐮�濡傛灉鏁版嵁鏇*柊 鍒欐瀛楁閫掑1 current_next_indicator:褰撳*鏈潵鏍囧織 ,涓�埇鏄�0',琛ㄧず褰撳*椹笂浣 敤. original_netword_id:16bits鐨勫師濮嬬綉缁淚 D鍙�reserved_future_use:8bits淇濈暀鏈潵 浣跨敤浣�鎺ヤ笅鏉ユ槸N涓*鐩 *殑寰幆: service_id:16 bits鐨勬湇鍔″櫒ID,瀹為檯涓婂氨鏄疨M T娈典腑鐨刾rogram_number. reserved_future_used:6bits淇濈暀鏈潵浣跨 敤浣� EIT_schedule_flag:1bit鐨凟IT淇℃伅,1琛ㄧず 褰撳*娴佸疄鐜颁簡璇ヨ*鐩殑EIT 犻� EIT_present_following_flag:1bits鐨凟IT淇℃伅, 1琛ㄧず褰撳*娴佸疄鐜颁簡璇ヨ*鐩 殑EIT浼犻� running_status:3bits鐨勮繍琛岀姸鎬佷俊* �1-杩樻*鎾斁 2-鍑犲垎閽熷悗椹笂寮�,3-琚殏鍋滄挱鍑�4-姝ｅ湪鎾斁,鍏朵粬---淇濈暀 free_CA_mode:1bits鐨勫姞瀵嗕俊*�'1'琛 ず璇ヨ*鐩鍔犲瘑. 绱�鎺ョ潃鐨勬槸鎻忚*绗�涓�埇 *ervice descriptor,鍒嗘瀽姝ゆ弿杩扮鍙互鑾 峰彇servive_id鎸囧畾鐨勮*鐩殑鑺傜 鍚嶇О.鍏蜂綋鏍煎紡璇峰弬鑰�EN3004 68涓*殑Service descriptor閮ㄥ垎.鍒嗘瀽瀹屾瘯,鍒欒* 悕绉板拰鑺傜洰鍙风爜宸茬粡鑱旂 璧锋潵浜�鏈洪《鐩掔▼搴忓氨鍙 互鐢ㄨ繖浜涜*鐩悕绉颁唬鏇�PID ╃敤鎴烽�鎷�*庤�瀹炵幇姣旇緝 嬪ソ鐨*敤鎴风晫闈�
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