{"id":94546,"date":"2020-09-18T13:42:07","date_gmt":"2020-09-18T11:42:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/biblioteki-szhatiya-lzham-i-crunch-perevedeny-v-obshhestvennoe-dostoyanie"},"modified":"2020-09-18T13:42:07","modified_gmt":"2020-09-18T11:42:07","slug":"biblioteki-szhatiya-lzham-i-crunch-perevedeny-v-obshhestvennoe-dostoyanie","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/biblioteki-szhatiya-lzham-i-crunch-perevedeny-v-obshhestvennoe-dostoyanie","title":{"rendered":"As bibliotecas de compress\u00e3o LZHAM e Crunch foram tornadas de dom\u00ednio p\u00fablico","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Rich Geldreich traduzido<\/a><\/noindex> as bibliotecas de compress\u00e3o que ele desenvolveu LZHAM<\/a><\/noindex> e Crunch<\/a><\/noindex> na categoria dom\u00ednio p\u00fablico<\/a><\/noindex> (Public Domain), ou seja, ele renunciou totalmente aos direitos autorais patrimoniais e permitiu a distribui\u00e7\u00e3o e uso em qualquer forma por todos, sem limita\u00e7\u00f5es. Para jurisdi\u00e7\u00f5es onde a categoria de dom\u00ednio p\u00fablico n\u00e3o \u00e9 reconhecida, ressalvas correspondentes foram deixadas. Projetos anteriores eram distribu\u00eddos sob as licen\u00e7as MIT e ZLIB.<\/p>\n

A biblioteca Crunch fornece ferramentas para compress\u00e3o e re-encode de texturas sem perda de qualidade usando algoritmos DXTn<\/a><\/noindex>. Crunch suporta os formatos de textura DXT1\/5\/N e 3DC e pode salvar os resultados nos formatos DDS, CRN e KTX. <\/p>\n

LZHAM fornece um algoritmo de compress\u00e3o otimizado para empacotamento de recursos que v\u00eam como parte de aplica\u00e7\u00f5es de jogos. A API compat\u00edvel com Zlib \u00e9 suportada. As caracter\u00edsticas not\u00e1veis do LZHAM incluem
\no uso de tabelas de correspond\u00eancia (com tamanhos de at\u00e9 64 KB), dicion\u00e1rios (de at\u00e9 500 MB), paraleliza\u00e7\u00e3o de opera\u00e7\u00f5es em m\u00faltiplos threads e a aplica\u00e7\u00e3o de altera\u00e7\u00f5es delta, permitindo a distribui\u00e7\u00e3o de mudan\u00e7as sem reempacotar arquivos j\u00e1 comprimidos.<\/p>\n

Em termos de taxa de compress\u00e3o e velocidade de empacotamento, a implementa\u00e7\u00e3o do LZHAM \u00e9 compar\u00e1vel ao LZMA, mas em velocidade de descompress\u00e3o supera o LZMA em 1,5 a 8 vezes (embora seja mais lenta que o zlib). Em compara\u00e7\u00e3o com o ZSTD, o LZHAM se destaca em efici\u00eancia de compress\u00e3o, mas fica quase uma ordem de grandeza atr\u00e1s em velocidade de codifica\u00e7\u00e3o e um pouco atr\u00e1s em velocidade de decodifica\u00e7\u00e3o.<\/p>\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0438\u0447 \u0413\u0435\u043b\u0434\u0440\u0438\u0445 (Rich Geldreich) \u043f\u0435\u0440\u0435\u0432\u0451\u043b \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u044b\u0435 \u0438\u043c \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0441\u0436\u0430\u0442\u0438\u044f LZHAM \u0438 Crunch \u0432 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u044e \u043e\u0431\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f (Public Domain), \u0442.\u0435. \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043e\u0442\u043a\u0430\u0437\u0430\u043b\u0441\u044f \u043e\u0442 \u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 \u0430\u0432\u0442\u043e\u0440\u0441\u043a\u0438\u0445 \u043f\u0440\u0430\u0432 \u0438 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u0438\u043b \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u043b\u044e\u0431\u043e\u0439 \u0444\u043e\u0440\u043c\u0435 \u0432\u0441\u0435\u043c\u0438 \u0431\u0435\u0437 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439. \u0414\u043b\u044f \u044e\u0440\u0438\u0441\u0434\u0438\u043a\u0446\u0438\u0439, \u0433\u0434\u0435 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u044f \u043e\u0431\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u043d\u0435 \u043f\u0440\u0438\u0437\u043d\u0430\u0451\u0442\u0441\u044f, \u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043e\u0433\u043e\u0432\u043e\u0440\u043a\u0438. \u0420\u0430\u043d\u0435\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u044b 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