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2009 07 lfgs

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2009 07 lfgs

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ste documento é uma versão preliminar de: Barbosa, S.D.J. & Soares, L.F.G. TV digital interativa no Brasil se faz com Ginga: Fundamentos, Padrões, Autoria Declarativa e Usabilidade. Em T. Kowaltowski & K. Breitman (orgs.) Atualizações em Informática 2008. Rio de Janeiro, RJ: Editora PUC-Rio, 2008. pp.105-174. Esta versão em formato A4 está disponível apenas para facilitar a impressão e não pode ser distribuída com fins comerciais. Pedimos que as citações e referências sejam realizadas sobre a obra publicada, obedecendo a numeração de suas páginas.
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  7. 7. !! ! ^!1#18'$.!0-.1#O'#-%!5'!WF!5#P#8.O!.5%8%+!%!7.5-E%!C=Z6@J!7.-.!.!<%5#:#<.VE%! 5%!;+5#%!7-#&<#7.O!5'!+$!7-%P-.$.!kU/SW!S/A!KHjMG@G!GMMnl2!<%$!.1!<.-.<8'-]18#<.1! .7-'1'&8.5.1!&.!W.0'O.!gBKB! Tabela 3.1.Codificação de áudio no sistema brasileiro de TV digital. ! L181#%(215);.M(5)1)NO31.5) L181#%(215)=(2%P%1.5) ="-2G() 9"^`9Z?!KJJLj@g![C=Z6@J!UU?! 9"^`9Z?!KJJLj@g![C=Z6@J!UU?! Q$31'R=126.') UU?R3J![7.-.!$+O8#<.&.O!HBK! oZ@UU?!IKR3J![7.-.!'18b-'%! oZ@UU?!IGR3g![5%#1!<.&.#1! +"M")-1)"9(5%2"/19) Jmto)! Jmto)! *CHCHC) !(-.6.8"FG()-(),$-1() >$! 1#&.O! 5'! I]5'%! 5#P#8.O! <.--'P.! $+#8.! #&:%-$.VE%! -'5+&5.&8'! '17.<#.O$'&8'! [-'5+&5d&<#.!#,)+'NL/'0+.!'!8'$7%-.O$'&8'![-'5+&5d&<#.!#,)*+NL/'0+.$B!!Z$! +$! ,+.5-%!5'!+$!I]5'%!&E%!%<%--'2!'$!P'-.O2!$+5.&V.!.0-+78.!5'!+$!7#T'O!7.-.!+$!7#T'O! <%&1'<+8#I%2! 'T<'8%! &%1! <%&8%-&%1! 5%1! %0e'8%1B! Z$! 7.-8#<+O.-2! 7%5'$%1! '$7-'P.-! .! <%5#:#<.VE%! *=Z6! k9"^`9Z?! KMLKm@K! KLLJl! '$! <.5.! ,+.5-%! 5%! I]5'%! 7.-.! 8#-.-$%1! 7-%I'#8%!5'11.!-'5+&5d&<#.!'17.<#.OB!Z11.!8b<&#<.2!.7O#<.5.!,+.5-%!.!,+.5-%2!1'!<%&18#8+#! .! 0.1'! 5.! <%5#:#<.VE%! <Y.$.5.! C*=Z6! [C%8#%&! *=Z6B!Z&8-'8.&8%2!.%!'$7-'P.-$%1! '11.! <%5#:#<.VE%2! '18.-'$%1! O'I.&5%! '$! <%&8.! .7'&.1! .! -'5+&5d&<#.! #&8-.@,+.5-%2! ,+.&5%! .! $.#%-! -'5+&5d&<#.! 7%5'! '18.-! &.1! #&:%-$.Vc'1! <%&8#5.1! '$! ,+.5-%1! <%&1'<+8#I%1![-'5+&5d&<#.!#&8'-@,+.5-%12!%!,+'!b!'T7O%-.5%!&%!7.5-E%!C=Z6!I]5'%B! ! S%! 7.5-E%! C=Z6@G! I]5'%! k9"^`9Z?! KgmKm@G! GMMMl2! <.5.! 0O%<%! [<%&e+&8%! 5'! mTm!7#T'O1!7%5'!1'-!<%5#:#<.5%!+1.&5%!.7'&.1!.!#&:%-$.VE%!#&8-.@,+.5-%B!r+.5-%1!'$! ,+'!8%5%1!%1!0O%<%1!1E%!<%5#:#<.5%1!5'11.!:%-$.!1E%!5'&%$#&.5%1!,+.5-%1!9B! ! >$! $.<-%0O%<%! [<%&e+&8%! 5'! KjTKj! 7#T'O1! 7%5'! 8.$0b$! 1'-! <%5#:#<.5%! 5'! :%-$.!7-'5#8#I.B!U!7-'5#VE%!C=Z6!7%5'!1'-!:'#8.!0.1'.5.!'$!,+.5-%1!7.11.5%1!'!'$! ,+.5-%1!:+8+-%1!5.!1',_D&<#.!5'!+$!I]5'%B!r+.&5%!.!7-'5#VE%!b!:'#8.!0.1'.5.!'$!+$! ,+.5-%!7.11.5%2!b!<%5#:#<.5%!%!'--%!5'!7-'5#VE%![5#:'-'&V.!5%!$.<-%0O%<%!,+'!1'!,+'-! <%5#:#<.-! 7.-.! %! $.<-%0O%<%! 5'! -':'-D&<#.! 5%! ,+.5-%! 7.11.5%2! +1.&5%! %1! $'1$%1! 7-%<'5#$'&8%1!+1.5%1!7.-.!%1!$.<-%0O%<%1!#&8-.@,+.5-%12!'!%!I'8%-!5'!$%I#$'&8%![,+'! 5;! .! 7%1#VE%! -'O.8#I.! 5%! $.<-%0O%<%! ,+'! 1'! ,+'-! <%5#:#<.-! 7.-.! %! $.<-%0O%<%! 5'! -':'-D&<#.!5%!,+.5-%!7.11.5%B!r+.5-%1!<%5#:#<.5%1!+1.&5%!'11'!8#7%!5'!7-'5#VE%!1E%! <Y.$.5%1! ,+.5-%1! =B! S%! C=Z6@G! I]5'%2! .! 7-'5#VE%! b! 1'$7-'! 0.1'.5.! &%! 7-#$'#-%! ,+.5-%!5%!8#7%!9!%+!=2!.&8'-#%-B!C.<-%0O%<%1!8.$0b$!7%5'$!1'-!<%5#:#<.5%1!0.1'.5%1! &%!7-#$'#-%!,+.5-%!9!%+!=2!7%18'-#%-!%+!.&8'-#%-B!S'11'!<.1%!8'-'$%1!5%#1!,+.5-%1!5'! -':'-D&<#.! 7.-.! .! 7-%<+-.! 5%! $'OY%-! <.1.$'&8%B! U! <%5#:#<.VE%! 7%5'! 1'-! -'.O#).5.! 0.1'.5.!&%!,+.5-%!.&8'-#%-2!&%!,+.5-%!7%18'-#%-2!%+!.#&5.!0.1'.5.!&.!#&8'-7%O.VE%!5%! ,+.5-%! .&8'-#%-! '! 7%18'-#%-B! r+.5-%1! <%5#:#<.5%1! +1.&5%! '11'! 8#7%! 5'! 7-'5#VE%! 1E%! <Y.$.5%1!,+.5-%1!/B! ! ^! 7.5-E%! C=Z6@G! I]5'%! .5$#8'! I;-#%1! :%-$.8%1! 5'! ,+.5-%1! '! 5#:'-'&8'1! -'1%O+Vc'1!7.-.!.1!<%$7%&'&8'1!5'!<-%$#&d&<#.![1+0.$%18-.P'$!5'!<-%$#&d&<#.B!('! :.8%2! %! C=Z6@G! '17'<#:#<.! I;-#%1! <%&e+&8%1! 5'! 7.-d$'8-%1! 5'! -'18-#VE%2! ,+'! 1E%! 5':#&#5%1!&%1!1'+1!7'-:#1!'!&]I'#1B!>$!7'-:#O!'17'<#:#<.!.1!:.<#O#5.5'1!5'!<%5#:#<.VE%!,+'! 1'-E%! +8#O#).5.1! [7%-! 'T'$7O%2! 8#7%1! 5'! ,+.5-%12! 1+0.$%18-.P'$! '8<B! >$! &]I'O!
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  9. 9. !! 3.2.3.1. Multiplexação de dados ^1!:O+T%1!5'!5.5%1!7%5'$!1'-!8-.&17%-8.5%1!.8-.Ib1!5'!1'-I#V%1!1]&<-%&%1![:-.<.$'&8'! .<%7O.5%12! 1#&<-%&#).5%1! [:%-8'$'&8'! .<%7O.5%1! %+! .11]&<-%&%1! [5'1.<%7O.5%1B! ^! 1'-I#V%!5'!8-.&17%-8'!1]&<-%&%!.11+$'!,+'!%1!:O+T%1!5'!5.5%1!1E%!1#&<-%&#).5%1!'&8-'!1#2! 1'P+#&5%!%!7.-.5#P$.!5'!'#T%!5%!8'$7%![8#$'O#&'!7'O.!.5#VE%!5'!<.-#$0%1!5'!8'$7%! [8#$'18.$71B!^1!:O+T%1!5'!5.5%12!&%!'&8.&8%2!&E%!'18E%!-'O.<#%&.5%1!i!8'$7%-#).VE%! 5%1!:O+T%1!5'!;+5#%!7-#&<#7.O!'!I]5'%!7-#&<#7.OB!U!4#P+-.!gBH!#O+18-.!%!7-%<'5#$'&8%B! S%8'!,+'!%1!<.-#$0%1!5'!8'$7%!.11%<#.5%1!.%1!:O+T%1!5'!5.5%1!1E%!5#:'-'&8'1!5.,+'O'1! .11%<#.5%1!.%1!:O+T%1!5'!;+5#%!7-#&<#7.O!'!I]5'%!7-#&<#7.OB! 65@ 6>;K(L :V%@)0 !>65@ 6>;K(L :V%@)0 W W X X F F Y$2"' <-"/+"<.4 AD2)' <-"/+"<.4 Z 2.2'% Y$2"' <-"/+"<.4 AD2)' <-"/+"<.4 Y$2"' <-"/+"<.4 AD2)' <-"/+"<.4 Z 2.2'% ! Figura 3.5.Transporte de dados síncronos ! ^! 1'-I#V%! 5'! 8-.&17%-8'! 1#&<-%&#).5%! .11+$'! ,+'! %1! :O+T%1! 5'! 5.5%1! 1E%! 1#&<-%&#).5%1! '&8-'! 1#! '! 8.$0b$! <%$! %1! :O+T%1! 5'! ;+5#%! 7-#&<#7.O! '! I]5'%! 7-#&<#7.O2! 1'$7-'!1'P+#&5%!%!7.-.5#P$.!5'!'#T%!5%!8'$7%![8#$'O#&'2!7'O.!.5#VE%!5'!<.-#$0%1!5'! 8'$7%![8#$'18.$71B!S'11'!<.1%2!%1!<.-#$0%1!5'!8'$7%!.11%<#.5%1!.%1!:O+T%1!5'!5.5%1! 1E%!#P+.#1!i,+'O'1!.11%<#.5%1!.%1!:O+T%1!5'!;+5#%!7-#&<#7.O!'!I]5'%!7-#&<#7.OB! ! 4O+T%1! 5'! 5.5%1! &%! 8-.&17%-8'! 1]&<-%&%! '! 1#&<-%&#).5%! 1X! 7'-$#8'$! %! 1#&<-%&#1$%!,+.&5%!%!#&18.&8'!5'!8'$7%!5'!1#&<-%&#).VE%!b!5'8'-$#&]18#<%B!U7O#<.Vc'1! #&8'-.8#I.12! %&5'! .! 1#&<-%&#).VE%! b! 5.5.! '$! +$! 8'$7%! .O'.8X-#%! 5'8'-$#&.5%! 7'O%! +1+;-#%!8'O'17'<8.5%-2!.7O#<.Vc'1!%&5'!%!<%&8'f5%!b!P'-.5%!'$!8'$7%!5'!'T#0#VE%!'!&E%! 1'!7%5'!5'8'-$#&.-!%!8'$7%!'T.8%!%&5'!'I'&8%1!%<%--'-E%2!'!.7O#<.Vc'1!<+e%!<%&8'f5%!b! 5'8'-$#&.5%!'$! 8'$7%!5'!'T#0#VE%2!&E%!7%5'$! 1'-!1#&<-%&#).5.1!+1.&5%!%1!1'-I#V%1! 1]&<-%&%!%+!1#&<-%&#).5%B!=.-.!8.&8%!'T#18'!%!1'-I#V%!5'!8-.&17%-8'!.11]&<-%&%B! ! "'-I#V%1!.11]&<-%&%1!#$7O#<.$!,+'!&'&Y+$.!$.-<.!5'!8'$7%![8#$'18.$7!'18;! .11%<#.5.! .%1! 5.5%1B! S%! '&8.&8%2! 7%5'! Y.I'-! 1#&<-%&#1$%! '&8-'! %1! I;-#%1! %0e'8%1! 8-.&17%-8.5%12!'!'&8-'!'11'1!%0e'8%1!'!%1!:O+T%1!5'!;+5#%!'`%+!I]5'%!7-#&<#7.OB!=.-.!8.&8%! %!7.-.5#P$.!5'!1#&<-%&#).VE%!5'!'#T%!5%!8'$7%!b!.0.&5%&.5%2!1'&5%!1+018#8+]5%!7'O%! 7.-.5#P$.! 5'! <.+1.O#5.5'`-'18-#VE%B! S%1! 1'-I#V%1! .11]&<-%&%12! e+&8%! <%$! %1! 5.5%1! b! $.&5.5%!%!.7O#<.8#I%![Y.<Y+-.5%!&.!4#P+-.!gBj2!,+'!'17'<#:#<.2!'$!+$.!O#&P+.P'$!5'! 7-%P-.$.VE%!'17'<]:#<.2!%!<%$7%-8.$'&8%!-'O.8#I%!5%1!5.5%12!5%!;+5#%!7-#&<#7.O!'!5%! I]5'%!7-#&<#7.O2!&%!8'$7%!'!&%!'17.V%B! 65@ 6>;K(L :V%@)0 !>65@ 6>;K(L :V%@)0 W W X X Y$2"' <-"/+"<.4 AD2)' <-"/+"<.4 Z 2.2'% Y$2"' <-"/+"<.4 AD2)' <-"/+"<.4 Y$2"' <-"/+"<.4 AD2)' <-"/+"<.4 Z 2.2'% ! Figura 3.6.Transporte de dados assíncronos ! ^! 1'-I#V%! .11]&<-%&%! b! .! f&#<.! :%-$.! 7.-.! .! 1#&<-%&#).VE%! <%$! 8'$7%! #&5'8'-$#&.5%B!ZO'2!&%!'&8.&8%2!'T#P'!+$.!O#&P+.P'$!7.-.!'17'<#:#<.VE%!5%!1#&<-%&#1$%! '2! &%! -'<'78%-2! +$.! $;,+#&.! <.7.)! 5'! #&8'-7-'8.-! '! 'T'<+8.-! %1! <%$.&5%1! 5'!
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  17. 17. !! Tabela 3.3. Ambientes de aplicações para receptores fixos e móveis Middleware Sistema de TVD Ambiente Declarativo Ambiente Procedural ACAP Americano/ATSC ACAP-X [ATSC A-101 2005] (linguagem declarativa = XHTML like; linguagem não-declarativa = ECMAScript) ACAP-J [ATSC A-101 2005] (linguagem não-declarativa = Java MHP Europeu/DVB-T DVB-HTML [ETSI TS 102 812 V1.2.2 2006] (linguagem declarativa = XHTML like; linguagem não-declarativa = ECMAScript) MHP [ETSI TS 102 812 V1.2.2 2006] (linguagem não-declarativa = Java ARIB-BML Japonês/ISDB-T ARIB ! BML [ARIB B-24 2004] (linguagem declarativa = BML (XHTML like; linguagem não-declarativa = ECMAScript) Opcional (GEM [ETSI TS 102 819 V1.3.1 2005] like); não implementado) Ginga Brasileiro/SBTV D Ginga-NCL [ABNT NBR 15606-2 2007] (linguagem declarativa = NCL; linguagem não- declarativa = Lua) Ginga-J (linguagem não-declarativa = Java U!W.0'O.!gBJ!#O+18-.!%1!.$0#'&8'1!5%1!$#55O'{.-'1!5%1! 1#18'$.1!e.7%&D1!'!0-.1#O'#-%! 7.-.!-'<'78%-'1!7%-8;8'#1B! Tabela 3.4. Ambientes de aplicações para receptores portáteis Middleware Sistema de TVD Ambiente Declarativo Ambiente Procedural ARIB-BML Japonês/ISDB-T ARIB ! BML [ARIB B-24 2004] (linguagem declarativa = BML (XHTML like; linguagem não-declarativa = ECMAScript) X Ginga Brasileiro/SBTVD Ginga-NCL [ABNT NBR 15606-5 2007] (linguagem declarativa = NCL; linguagem não-declarativa = Lua) Opcional o Ginga-J ! W'-$#&.&5%! '18.! 1'VE%2! <.0'! '&:.8#).-$%1! ,+'! 8.&8%! %! .$0#'&8'! 5'<O.-.8#I%! ,+.&8%!%!7-%<'5+-.O!5'!+$!$#55O'{.-'!5'I'!5.-!1+7%-8'!.!8%5%1!%1!-',+#1#8%1!5#1<+8#5%1! &.!"'VE%!gBgBKB!?.0'!8.$0b$! 1.O#'&8.-!,+'!8%5%1!%1!$#55O'{.-'1!,+'!.7-'1'&8.$!%1! 5%#1!.$0#'&8'1!7'-$#8'$!,+'!<.5.!+$!5'O'1!+1'!.1!:.<#O#5.5'1!5%!%+8-%!7%-!$'#%!5'! +$.!7%&8'!5':#&#5.!.8-.Ib1!5'!U=91!0#O.8'-.#1!7.5-E%B! *C*C*C) N.--'1X"215)@18'"2"%.3(5) ^!5'1'&I%OI#$'&8%!5'!.7O#<.Vc'1!&E%@5'<O.-.8#I.1!:%P'!.%!'1<%7%!5'18'!<.7]8+O%B!S'18.! 1'VE%! 5#1<+8#-'$%1! %! '18.5%! 5.! .-8'! 5%1! $#55O'{.-'1! 5'<O.-.8#I%1! .7-'1'&8.5%1! &.1! W.0'O.1!gBg!'!gBJB! ! ?%$%!$%18-.!.!W.0'O.!gBg2!.!$.#%-#.!5%1!.$0#'&8'1!5'<O.-.8#I%1!b!0.1'.5%!'$! |oWC3! }! Z?CU"<-#78B! |oWC3! kzg?! AZ?@TY8$OK@GMMGMmMK! GMMGl! b! +$.! O#&P+.P'$! #&#<#.O$'&8'! 7-%e'8.5.! 7.-.! &.I'P.VE%! '$! #&:%-$.Vc'1! 8'T8+.#1! 7'O.! #&8'-.VE%! 5%! +1+;-#%B! |oWC3! 7-#I#O'P#.! .! #&8'-.8#I#5.5'! '$! 5'8-#$'&8%! 5.! 1#&<-%&#).VE%!'!5.!.5.78.0#O#5.5'!5'!<%&8'f5%!,+'2!7%-!&E%!:.)'-'$!7.-8'!5%!:%<%!5.! O#&P+.P'$2!1X!7%5'$!1'-!5':#&#5.1!7%-!7-%<'5#$'&8%1!#$7'-.8#I%1!+1.&5%!.!O#&P+.P'$! Z?CU"<-#78! kZ?CU! GjG! KLLLlB! ?%$%! I#$%12! #11%! 8%-&.! %! 5'1'&I%OI#$'&8%! 5.1! .7O#<.Vc'1!$+#8%!$.#1!5#:]<#O!7.-.!+1+;-#%1!O'#P%1B! ! |oWC3!1X!7'-$#8'!.!5':#&#VE%!5'!-'O.<#%&.$'&8%1!5'!#&8'-.8#I#5.5'!'&I%OI'&5%! 7.-8'!5'!+$!<%&8'f5%![d&<%-.!5'!+$!%0e'8%!5'!$]5#.!1'!'11'!%0e'8%!:%-!8'T8+.O2!%+!1'!.! d&<%-.! :%-! 7+-.$'&8'! '17.<#.OB! S%! <.1%! 5'! +$! 8'T8%2! %! -'O.<#%&.$'&8%! 5'I'! 1'-! '$0+8#5%!&%!<%&8'f5%2!%+!1'e.2!|oWC3!b!+$.!O#&P+.P'$!5%!8#7%!$'5#.@0.1'52!<%$%!
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  22. 22. ! ! ;/@"@V 1'//)+@'- N"/[ 1.$%.4 !)%+-"<@'-:F"@+!)%+-"<@'- ]'2) 1'0<'%"@"'/ :F"@+*$2"' C"2)',)W@ =0.^) 333 6)2". 1'/@)W@ _+'/@)W@5` _0)2".5` _2)%+-"<@'-5` _2)%+-"<@'-:F"@+5` _%F"@+5` _+'//)+@'-5` _4"/[5`=/@)-#.+) _.-).5` _<-'<)-@V5` _<'-@5` _%F"@+>'-@5` ! Figura 3.11.Entidades NCM e elementos da linguagem NCL *CWC ?&%(2.")@18'"2"%.3")8(9)")Q!Y) =.-.!<%&18-+#-!+$!5%<+$'&8%!Y#7'-$]5#.2!b!&'<'11;-#%!5':#&#-!()U&1!1'!,+'-!8%<.-2!(0-12! 8(9(2!'!U&"0-(B! Z) U&1) %(8"2[) Z$! P'-.O2! .! 7-#$'#-.! <%#1.! ,+'! <%&1#5'-.$%1! ,+.&5%! <%$'V.$%1! .! <%&<'0'-!+$!7-%P-.$.!.+5#%I#1+.O!#&8'-.8#I%!b!%!1'+!<%&8'f5%q!,+.#1!I]5'%12!#$.P'&12! 8'T8%1!'!%+8-.1!$]5#.1!%+!7-%P-.$.1!1'-E%!.7-'1'&8.5%1!7'O%!7-%P-.$.B!Z11'!<%&8'f5%!b! -'7-'1'&8.5%! .8-.Ib1! 5'! 0O5) -1) 9$-."B! W%5%! &X! 5'! $]5#.! b! 5':#&#5%! 5'&8-%! 5'! +$! <%&8'T8%B! S.! S?32! %! 'O'$'&8%! !"#$! b! %! <%&8'T8%! ,+'! <%&8b$! 8%5%1! %1! &X1! 5%! 5%<+$'&8%2!1'e.$!&X1!5'!$]5#.!%+!<%&8'T8%1B!U!4#P+-.!gBKG!#O+18-.!+$!5%<+$'&8%!<%$! H!&X1!5'!$]5#.2!J!5%1!,+.#1!'18E%!5'&8-%!5'!+$!<%&8'T8%![!"#$%&'!.&#&Y.5%!.%!!"#$B) body videoPrincipal ctxMenu imgMenu1 imgMenu2 imgMenu3 imgMenu4 Figura 3.12. Representação de nós de mídia e de composição. Z0-1) %(8"2[) a! $'5#5.! ,+'! 5':#&#$%1! %! <%&8'f5%! 5%! &%11%! 7-%P-.$.2! 8.$0b$! <%$'V.$%1! .! 5':#&#-! .1! ;-'.1! %&5'! <.5.! $]5#.! 1'-;! .7-'1'&8.5.! &.! 8'O.2! .8-.Ib1! 5'! 'O'$'&8%1!5'&%$#&.5%1!21/.>15B!>$.!-'P#E%![%&'(")!#&5#<.!.!7%1#VE%!'!.1!5#$'&1c'1! 5.!;-'.!%&5'!+$.!$]5#.!1'-;!.7-'1'&8.5.B!Z$!%+8-.1!7.O.I-.12!+$.!-'P#E%!1'-I'!7.-.! #&#<#.O#).-!.!7%1#VE%!5%1!&X1!5'!$]5#.!&+$!O%<.O!'17'<]:#<%B!y!#$7%-8.&8'!%01'-I.-!,+'! +$.! -'P#E%! 5':#&'! %&5'! $]5#.1! 7%5'-E%! 1'-! .7-'1'&8.5.12! $.1! &E%! .! .11%<#.VE%! <%$! <.5.!$]5#.!7.-8#<+O.-B!Z11.!.11%<#.VE%!b!:'#8.!.8-.Ib1!5'!+$!5'1<-#8%-2!<%$%!1'-;!I#18%! &.!7-XT#$.!1'VE%B!
  23. 23. !! !(9()%(8"2[)U!.11%<#.VE%!5'!+$.!$]5#.!.!+$.!-'P#E%!b!5':#&#5.!.8-.Ib1!5'!+$! -1582.%(2![#&*+%(,-"%B!('1<-#8%-'1!1E%!+8#O#).5%1!8.$0b$!7.-.!5':#&#-!.!:%-$.!<%$%!.! $]5#.!5'I'-;!1'-!.7-'1'&8.5.B!=%-!'T'$7O%2!+$!5'1<-#8%-!5'!+$.!$]5#.!5'!;+5#%!7%5'! 5':#&#-!%!1'+!I%O+$'x!%!5'!+$.!$]5#.!5'!#$.P'$2!.OP+$!P-.+!5'!8-.&17.-D&<#.x!%!5'! +$.!$]5#.!5'!8'T8%2!1'!.!$]5#.!1'-;!.7-'1'&8.5.!I#1+.O$'&8'!%+!O#5.!7%-!+$!1#&8'8#).5%-! 5'!I%)2!'8<B!U%!1'!5':#&#-!+$!5'1<-#8%-2!5':#&'@1'!.!-'P#E%!i!,+.O!'O'!'18.-;!.11%<#.5%B! W%5.!$]5#.!,+'!+8#O#).-!.,+'O'!5'1<-#8%-!'18.-;!.11%<#.5.!i!-'P#E%!<%--'17%&5'&8'B!>$! 5'1<-#8%-! &E%! 7%11+#! +$.! -'7-'1'&8.VE%! P-;:#<.! 5':#&#5.B! y! #$7%-8.&8'! %01'-I.-! ,+'2! $'1$%!,+'!&E%!1'!,+'#-.!.O8'-.-!.!:%-$.!<%$%!+$.!$]5#.!1'-;!.7-'1'&8.5.2!b!&'<'11;-#%! +$!5'1<-#8%-!7.-.!"55(8."2)")9$-."))21/.G(!%&5'!5'I'-;!1'-!.7-'1'&8.5.B!! ]&"0-()%(8"2[)^#"2%1)E_)=.-.!5':#&#-!,+.O!b!%!#2.91.2()0O!5%!5%<+$'&8%!.!1'-! .7-'1'&8.5%2!5'I'@1'!<-#.-!+$.!7%-8.![,"%-!&%!<%&8'T8%!!"#$!7.-.!'11'!&XB!?.1%!Y.e.! $.#1!5'!+$.!7%-8.!&%!<%&8'T8%!!"#$2!%1!&X1!$.7'.5%1!7%-!8%5.1!.1!7%-8.1!1E%!#&#<#.5%1! '$!7.-.O'O%B!95'&8#:#<.-!7%-!%&5'!%!5%<+$'&8%!7%5'!<%$'V.-!.!1'-!.7-'1'&8.5%!b!.7'&.1! +$.! <.-.<8'-]18#<.! '17'<]:#<.! 5'! +$.! 7%-8.B! ('! :.8%2! 7%-8.1! 1E%! &'<'11;-#.1! 7.-.! 5.-! .<'11%!.!&X1![1'e.$!&X1!5'!$]5#.!%+!<%&8'T8%1!#&8'-&%1!.!+$!<%&8'T8%!,+.O,+'-2!'!&E%! .7'&.1! .%! !"#$B! S.! 4#P+-.! gBKg2! %1! &X1! ()*$%&'+,- ()*$%&'.! '! ()*$%&'/! 5%! <%&8'T8%! !"#$%&'-1X!7%5'$!1'-!.<'11.5%12!5'!:%-.!5%!<%&8'T8%!!"#$%&'2!.8-.Ib1!5.1!7%-8.1!0$%&'+,- 0$%&'.!'!0$%&'/2!-'17'<8#I.$'&8'B!*;!%!&X!()*1'&23!&E%!7%5'!1'-!.<'11.5%!5'!:%-.!5%! <%&8'T8%!!"#$%&'B! =.-.!5':#&#-!U&"0-(!+$!&X!5'!$]5#.!1'-;!.7-'1'&8.5%!'$!-'O.VE%!.!%+8-%12!1E%! <-#.5%1! 1'(52! ,+'! 1E%! +8#O#).5%1! 7.-.! '18.0'O'<'-! %! 1#&<-%&#1$%! '&8-'! %1! &X1! '! 7.-.! 5':#&#-! .! #&8'-.8#I#5.5'! 5%! 7-%P-.$.B! ^! <%$7%-8.$'&8%! 5'11'1! 'O%1! b! 5.5%! 7%-! 8(018%(215B!ZO%1!'!<%&'<8%-'1!1E%!I#18%1!$.#1!.5#.&8'! body videoPrincipal ctxMenu imgMenu1 imgMenu2 imgMenu3 imgFundo pMenu1 pMenu2 pMenu3 pInicio Figura 3.13. Porta de um nó de composição. *CWCDC) `5%2&%&2")-1)&9)#2(/2"9")19)Q!Y) >$!7-%P-.$.G !'$!S?3!b!+$!.-,+#I%!'1<-#8%!'$!|C3B!W%5%!5%<+$'&8%!S?3!7%11+#!.! 1'P+#&8'!'18-+8+-.![W.0'O.!gBHq! ! um cabeçalho de arquivo NCL (linhas 1 e 2); ! uma seção de cabeçalho do programa (seção .&/#, linhas 3 a 13), onde se definem as regiões, os descritores, os conectores e as regras utilizados pelo programa; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! G !S'18'!5%<+$'&8%2!+8#O#).-'$%1!%1!8'-$%1!(+.4+'9'!'!0.&/9*,).%A"#(*+9F0#'C!<%$%!1#&s&#$%1B!
  24. 24. ! ! ! o corpo do programa (seção !"#$, linhas 14 a 17), onde se definem os contextos, nós de mídia, elos e outros elementos que definem o conteúdo e a estrutura do programa; ! pelo menos uma porta que indica por onde o programa começa a ser exibido (port pInicio, linha 15); e ! a conclusão do documento (linha 18). Tabela 3.5. Estrutura básica de um documento NCL. cabeçalho do arquivo NCL 01 2345678&%*(")9:0;<:7&)+"#()'9:=>?@AABC@0:3D7 E1 2)+67(#9:&4&5,6"<0:7 456)*9:.--,1FFGGG;)+6;"%';!%FHIJK;<FLMNOP%"Q(6&:77D7 cabeçalho do programa K1 2.&/#D7 base de regiões R1 7 7 2%&'(")S/*&D7 B1 7 7 72T@@7%&'(U&*7#/7-&6/7")#&7/*75V#(/*7*W"7/,%&*&)-/#/*7@@D7 X1 7 7 2F%&'(")S/*&D7 base de descritores Y1 7 2#&*+%(,-"%S/*&D7 A1 7 7 2T@@7#&*+%(-"%&*7Z[&7#&Q()&57+"5"7/*75V#(/*7*W"7 /,%&*&)-/#/*7@@D7 C1 7 2F#&*+%(,-"%S/*&D7 base de conectores 0<1 7 2+"))&+-"%S/*&D7 001 7 7 2T@@77+")&+-"%&*7Z[&7#&Q()&57+"5"7"*7&6"*7*W"7/-(8/#"*7&7"7 Z[&7&6&*7#(*,/%/57@@D7 0E1 7 2F+"))&+-"%S/*&D7 0K1 2F.&/#D7 corpo do programa 0R1 2!"#$D7 ponto de interface do programa 0B1 7 2T@@7,"%-/*]7@@D7 conteúdo do programa 0X1 7 2T@@77 +")-&4-"*^77 )_*7#&75V#(/7&7*[/*7`)+"%/*^77 &6"*7&77 "[-%"*7&6&5&)-"*7@@D7 0Y1 2F!"#$D7 término 0A1 2F)+6D7 *CWCHC) I1&)#2.91.2()-(8&910%()Q!Y) Exemplo 01 ! Reproduzindo um vídeo Z18.!1'VE%!.7-'1'&8.!+$!5%<+$'&8%!S?3!1#$7O'12!,+'!.7'&.1!-'7-%5+)!+$!I]5'%!'$! 8'O.!#&8'#-.B!U7'1.-!5'!&E%!1'!8-.8.-!5'!+$!5%<+$'&8%!Y#7'-$]5#.!8]7#<%![7%#1!&E%!Y;!'O%1! O#P.&5%!%1!&X12!%!'T'$7O%!8'$!7%-!%0e'8#I%!:.$#O#.-#).-!%!O'#8%-!<%$!.OP+&1!'O'$'&8%1! 0;1#<%1!5.!O#&P+.P'$!S?3B! ^!<%&8'T8%!2!"#$D!<%&8b$!.7'&.1!+$!&X!5'!$]5#.2!4(2%356%7"'782!$.7'.5%!7'O.! 7%-8.! 09(2%356%7"'78! [4#P+-.! gBKJ.B! U! -'P#E%! 7*:%;8<&"%(78! %<+7.&5%! .! 8'O.! #&8'#-.! 5%! 5#17%1#8#I%2!-'7-'1'&8.5.!.,+#!7'O.!-'P#E%!7*:9![4#P+-.!gBKJ0B! !" #" $" %" &" '"(" )"
  25. 25. !! (a) pVideoAbertura body videoAbertura (b) rgTelaInteira: 0,0 (100%x100%) rgTV: 0, 0 (100%x100%) Figura 3.14. Visões (a) estrutural e (b) de leiaute do primeiro exemplo. =.-.!<%&18-+#-!+$!7-%P-.$.!S?32!7%5'$%1!7.-8#-!5%!'1,+'O'8%!0;1#<%2!&%!,+.O!.1!O#&Y.1! 1+0O#&Y.5.1!#&5#<.$!.1!O.<+&.1!,+'!5'I'$%1!7-''&<Y'-q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`)+"%/*^77 &6"*7&77 "[-%"*7&6&5&)-"*7@@D7 0R1 2F!"#$D7 0B1 2F)+6D7 ="55()DJ)@16.0.0-()21/.>15)-1)%1'") U1!-'P#c'1!1E%!5':#&#5.1!7%-!'O'$'&8%1!2%&'(")D7&%!<.0'V.OY%!5%!5%<+$'&8%!['&8-'!%1! 8.P1!2.&/#D!'!2F.&/#D2!&.!1'VE%!5'!0.1'!5'!-'P#c'1!2%&'(")S/*&D;!U1!-'P#c'1!7%5'$!1'-! .&#&Y.5.12! +$.1! &.1! %+8-.12! 7.-.! :.<#O#8.-! %! 1'+! 7%1#<#%&.$'&8%! -'O.8#I%B! S'11'! 'T'$7O%2!8'$%1!.7'&.1!+$.!-'P#E%!,+'!1'-;!.11%<#.5.!i!$]5#.!5'!I]5'%![7*:%;8<&"%(782! .&#&Y.5.!i!-'P#E%!.11%<#.5.!i!8'O.!5.!WF![7*:9!'!%<+7.&5%!8%5%!%!1'+!'17.V%q! 2.&/#D7 7777772%&'(")S/*&D7 7777777772%&'(")7(#9:%'NO:76&Q-9:<:7-",9:<:7G(#-.9:0<<a:7.&('.-9:0<<a:D7 7777777777772%&'(")7(#9:%'N&6/=)-&(%/:76&Q-9:<:7-",9:<:77 77777777777777777777G(#-.9:0<<a:7.&('.-9:0<<a:7FD7 7777777772F%&'(")D7 7777772F%&'(")S/*&D7 2F.&/#D7 .&%&(#&"*%(,&/#0()*1/2*#( >$.!-'P#E%![2%&'(")D!b!5':#&#5.!<%$%!+$.!;-'.!&%!5#17%1#8#I%!5'!1.]5.!%&5'!+$!&X!5'! $]5#.! 7%5'! 1'-! 'T#0#5%B! =.-.! %-P.&#).-! %! O'#.+8'! 5.1! 5#I'-1.1! 7.-8'1! 5%! 5%<+$'&8%! Y#7'-$]5#.2! .1! -'P#c'1! 7%5'$! 1'-! .&#&Y.5.1B! Z$! S?32! .1! -'P#c'1! 1E%! 5':#&#5.1! &%! <.0'V.OY%! 5%! 7-%P-.$.! [2.&/#D2! &.! 1'VE%! 5'! 0.1'! 5'! -'P#c'1! [2%&'(")S/*&DB! >$! 5%<+$'&8%! S?3! 7%5'! 7%11+#-! 5#I'-1.1! 0.1'1! 5'! -'P#c'12! +$.! 7.-.! <.5.! 5#17%1#8#I%B! >$.!0.1'!5'!-'P#c'1!7%11+#!%1!1'P+#&8'1!.8-#0+8%1q! ! (#: identificador unívoco da base de regiões
  26. 26. ! ! ! #&8(+&: dispositivo ao qual a região está associada. Pode ser da forma *$*-&5>+%&&)(]^7*$*-&5b[#("(], conforme os dispositivos disponíveis. >$.!-'P#E%!1'-I'!7.-.!#&#<#.O#).-!.!7%1#VE%!5%1!&X1!5'!$]5#.!&+$!O%<.O!'17'<]:#<%B!=.-.! .7-'1'&8.-! +$! I]5'%! &%! <'&8-%! 5'! +$.! 8'O.! '! %<+7.&5%! ,+.1'! 8%5%! 1'+! '17.V%2! 7%-! 'T'$7O%2! 5':#&'$@1'! 5+.1! -'P#c'1q! 7*:92! ,+'! 5':#&'! .1! 5#$'&1c'1! 5%! 5#17%1#8#I%! [%1! I.O%-'1! 0*-'/5)$! 7.-.! %1! .8-#0+8%1! 6&Q-^7 -",^7 G(#-.! '! .&('.-7 1E%! =,- =,- +==>! '! +==>2! -'17'<8#I.$'8&'2! '! 7*?%&"732! 7.-.! ,+'! +$.! $]5#.! 1'e.! .7-'1'&8.5.! &%! <'&8-%! 5.! 8'O.2! <%&:%-$'!%!<X5#P%!.0.#T%q! 2%&'(")S/*&D7 2%&'(")7(#9:%'NO:D7 2%&'(")7(#9:%'I&)-%":76&Q-9:0<a:7-",9:0<a:77 77777777777777777777777G(#-.9:A<a:7.&('.-9:A<a:7FD7 2F%&'(")D7 2F%&'(")S/*&D7 U!S?3!5':#&'!%1!1'P+#&8'1!.8-#0+8%1!5'!-'P#E%q! ! (# * : identificador único, utilizado nas referências à região (por exemplo, pelos descritores das mídias que serão apresentadas na região) ! -(-6&7(título): título da região, cujo uso depende da implementação do formatador ! 6&Q-7 (esquerda), -", (topo), %('.- (direita), !"--"5 (base): coordenadas da região, com relação às coordenadas da região pai (ou da tela, no caso de a região não estar aninhada a nenhuma outra). ! G(#-. (largura) e .&('.- (altura): dimensões horizontal e vertical da região. Cabe observar que o autor pode escolher especificar as dimensões de uma região conforme sua conveniência. Por exemplo, em certos casos pode ser melhor definir os atributos %('.-^7 !"--"5^7 G(#-. e .&('.-. Em outros casos, pode ser mais apropriado especificar os atributos -",^76&Q-^7G(#-.7e7.&('.-. ! c=)#&4: número entre 0 e 255 que define a "camada" da região, ou sua posição da região no eixo "z", utilizado geralmente para indicar, no caso de regiões sobrepostas, quais regiões aparecem sobre quais outras. Camadas com c=)#&4 maior são apresentadas no topo de (sobrepondo) camadas com c=)#&4 menor. ^1!.8-#0+8%1!6&Q-2!-",2!%('.-2!!"--"52!G(#-.7'!.&('.-77%5'$!1'-!-'7-'1'&8.5%1!'$!7#T'O1! ['BPB!@A=0#@!%+!1#$7O'1$'&8'!@A=@!%+!'$!7%-<'&8.P'$!['BPB!@.A>@B!y!#$7%-8.&8'!%01'-I.-! ,+'2! <.1%! 8%5%1! %1! .8-#0+8%1! 5'! 7%1#<#%&.$'&8%! '! 5#$'&1E%! 1'e.$! '17'<#:#<.5%12! %1! .8-#0+8%1!6&Q-!'!G(#-.!8D$!7-'<'5D&<#.!1%0-'!%!.8-#0+8%!%('.-2!.11#$!<%$%!%1!.8-#0+8%17 -",! '! .&('.-! 8D$! 7-'<'5D&<#.! 1%0-'! %! .8-#0+8%! !"--"5B! r+.&5%! 5+.1! %+! $.#1! -'P#c'1! 7%11+]-'$! %! $'1$%! I.O%-! 5'! c=)#&42! '! '$! <.5.! -'P#E%! :%-! .7-'1'&8.5.! +$.! $]5#.2! 'T#18'$!5+.1!7%11#0#O#5.5'1q!<.1%!+$.!$]5#.!1'e.!.7-'1'&8.5.!.&8'1!5.!%+8-.2!.!$]5#.! ,+'!:%-!#&#<#.5.!5'7%#1!I.#!1'!1%0-'7%-!i!,+'!:%#!#&#<#.5.!.&8'1![%-5'$!8'$7%-.OB!?.1%! .1!5+.1!$]5#.1!1'e.$!#&#<#.5.1!.%!$'1$%!8'$7%2!.!%-5'$!b!'1<%OY#5.!.-0#8-.-#.$'&8'! 7'O%!:%-$.8.5%-B!S%8'!,+'!+$.!-'P#E%!Y'-5.!7%-!5':.+O8!%1!.8-#0+8%1!5.!1+.!-'P#E%!7.#B! ="55()HJ)@16.0.0-()()-1582.%(2)U&1)-1%129.0")8(9()()3$-1()512P)1M.B.-() W'&5%! '17'<#:#<.5%! .1! -'P#c'12! 5':#&'@1'! .P%-.! %! 5'1<-#8%-! ,+'! 5'8'-$#&.-;! <%$%! %! I]5'%!1'-;!'T#0#5%B!S'18'!'T'$7O%2!%!5'1<-#8%-!1'-;!+8#O#).5%!.7'&.1!7.-.!.11%<#.-!+$.! $]5#.!.!+$.!-'P#E%B!U11#$!<%$%!.1!-'P#c'12!%1!5'1<-#8%-'1!1E%!5':#&#5%1!&%!<.0'V.OY%! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! • !^1!.8-#0+8%1!1+0O#&Y.5%1!1E%!%1!.8-#0+8%1!%0-#P.8X-#%1!7.-.!%!'O'$'&8%![&%!<.1%2!2%&'(")DB!

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