FLAC 1.4.0 ya zo tare da ƙananan haɓakawa, amma yana da mahimmanci

FLAC buɗaɗɗen tsari ne tare da lasisin haƙƙin mallaka

FLAC yana amfani da hanyoyin ɓoye marasa asara kawai, wanda ke ba da garantin cikakken adana ingancin asali

Shekaru tara bayan an buga zaren karshe muhimmanci, al'ummar Xiph.Org ya gabatar da sabon sigar FLAC 1.4.0 codec wanda ke ba da rikodin rikodin sauti mara asara.

Ga wadanda basu san FLAC ba, yakamata ku san hakan wannan shi ne gaba daya bude streaming format, wanda ke nuna ba kawai buɗe ɗakunan karatu ba tare da aiwatar da ayyukan ɓoyewa da yankewa, har ma da rashin ƙuntatawa akan amfani da ƙayyadaddun bayanai da ƙirƙirar nau'ikan nau'ikan lambar ɗakin karatu.

An tsara FLAC don damfara sauti. Saboda wannan, fayilolin da aka samo suna iya kunnawa kuma ana iya amfani da su, haka kuma sun yi ƙasa da idan an yi amfani da algorithm na matsawa na ƙididdiga (kamar ZIP) kai tsaye zuwa fayil ɗin PCM.

FLAC ya zama ɗaya daga cikin abubuwan da aka fi so domin sayar da wakoki ta hanyar Intanet, da kuma Audio na biri wanda ke aiki iri daya. Bugu da kari, ana amfani da shi a cikin musayar waƙoƙi akan hanyar sadarwa, azaman madadin MP3, lokacin da kuke son samun raguwar girman girman fiye da fayil ɗin WAV-PCM, kuma kada ku rasa ingancin sauti. A lokaci guda, hanyoyin matsi marasa asara da aka yi amfani da su suna ba da damar girman rafin sauti na asali don ragewa da kashi 50-60%.

Babban labarai na FLAC 1.4.0

A cikin sabon nau'in codec da aka gabatar, an nuna cewa ƙarin goyan baya don ɓoyewa da yanke lamba da zurfafa de 32 ragowa a kowane samfurin ƙididdigewa.

Wani sabon abu da ke tare da ƙaddamar da wannan sabon fasalin shine ingantacciyar matsi a matakan 3 zuwa 8 a farashin ɗan ragi a cikin saurin ɓoyewa saboda ingantacciyar ƙididdiga ta atomatik.

Baya ga wannan, an kuma lura cewa ɗakin karatu libFLAC da flac mai amfani, a cikin wannan sabon sigar samar da ikon iyakance ƙimar bit mafi ƙarancin fayilolin FLAC, har zuwa bit ɗaya a kowane samfurin (zai iya zama da amfani yayin ɗaukar rafukan kai tsaye).

Hakanan An sami mafi girman saurin ɓoyewa don matakan 0, 1 da 2, tare da ɗan ƙaramin ingantacciyar matsawa akan matakan 1 zuwa 4 ta hanyar canza abubuwan da suka dace, da ƙari ya zama mai yiwuwa a ɓoye fayiloli tare da ƙimar samfurin har zuwa 1048575 Hz.

A gefe guda kuma, an kuma lura cewa An inganta saurin matsawa sosai akan masu sarrafa 8-bit ARMv64, godiya ga amfani da umarnin NEON. Ingantattun ayyuka akan na'urori masu sarrafawa x86_64 waɗanda ke goyan bayan saitin umarni na FMA.

Na sauran canje-canje wanda ya fice daga wannan sabon sigar:

  • API da ABI na libFLAC da libFLAC++ dakunan karatu an canza (haɓaka zuwa sigar 1.4 na buƙatar aikace-aikace don sake ginawa).
  • Deprecated kuma za a cire a cikin na gaba siga na plugin don XMMS.
  • The flac utility yana da sababbin zaɓuɓɓuka "-limit-min-bitrate" da "-kiyaye-ketare-metadata-idan- yanzu".
  • An inganta matsawar saitattun -1 da -4 akan wasu kayan ta hanyar canza heuristic daidaitacce na tsakiyar gefe.
  • Haɗe-haɗe-haɗe-haɗe musamman niyya na 8-bit ARMv64 na'urorin ta amfani da NEON (Ronen Gvili, Martijn van Beurden)
  • Ƙara saurin gudu don x86_64 CPUs waɗanda ke da ƙarin saitin umarni na FMA
  • Yanzu yana yiwuwa a ɓoye da kuma yanke 32-bit PCM
  • Kafaffen matsala ta amfani da fasalin fasalin wanda ya sa firam ɗin farko ya sami girman da ba daidai ba
  • An cire fayilolin tsarin MSVC da Makefile.lite. Gina tare da MSVC (Visual Studio) na iya yin amfani da CMake
  • Ƙarin sabon mai gyara fuzzer, ƙara ɗaukar hoto na bincike
  • Gargadin da aka dawo ta hanyar sarrafa metadata na waje yanzu ya fi fitowa fili idan mai amfani yayi ƙoƙarin maido da metadata na waje na nau'in da ba daidai ba, misali ta hanyar zazzage fayil ɗin FLAC mai ɗauke da metadata AIFF na waje a cikin fayil ɗin WAV.

Finalmente idan kuna sha'awar ƙarin sani game da shi, zaka iya duba bayanan A cikin mahaɗin mai zuwa.


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