{"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\/fr\/blog\/news\/biblioteki-szhatiya-lzham-i-crunch-perevedeny-v-obshhestvennoe-dostoyanie","title":{"rendered":"Les biblioth\u00e8ques de compression LZHAM et Crunch ont \u00e9t\u00e9 mises dans le domaine public.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Rich Geldreich a transf\u00e9r\u00e9<\/a><\/noindex> les biblioth\u00e8ques de compression qu'il a d\u00e9velopp\u00e9es LZHAM<\/a><\/noindex> et Crunch<\/a><\/noindex> dans le domaine public (Domaine Public), c'est-\u00e0-dire qu'il a compl\u00e8tement renonc\u00e9 \u00e0 ses droits d'auteur et a permis la diffusion et l'utilisation sous toutes ses formes sans restriction. Pour les juridictions o\u00f9 le domaine public n'est pas reconnu, des r\u00e9serves correspondantes ont \u00e9t\u00e9 laiss\u00e9es. Auparavant, les projets \u00e9taient diffus\u00e9s sous les licences MIT et ZLIB.<\/a><\/noindex> La biblioth\u00e8que Crunch fournit des outils pour la compression et la r\u00e9encodage des textures sans perte de qualit\u00e9 en utilisant des algorithmes<\/p>\n

DXTn . Crunch prend en charge les formats de textures DXT1\/5\/N et 3DC et peut enregistrer le r\u00e9sultat dans les formats DDS, CRN et KTX.<\/a><\/noindex>LZHAM fournit un algorithme de compression optimis\u00e9 pour l'empaquetage des ressources fournies avec les applications de jeux. Une API compatible avec Zlib est support\u00e9e. Parmi les caract\u00e9ristiques de LZHAM, on note la possibilit\u00e9 <\/p>\n

d'utiliser des tables de correspondance (d'une taille allant jusqu'\u00e0 64 Ko), des dictionnaires (jusqu'\u00e0 500 Mo), le parall\u00e9lisme des op\u00e9rations sur plusieurs threads et l'application de modifications delta, permettant de distribuer des changements sans recompacter des fichiers d\u00e9j\u00e0 compress\u00e9s.
\nEn termes de taux de compression et de vitesse d'empaquetage, l'impl\u00e9mentation de LZHAM est comparable \u00e0 LZMA, mais pour la vitesse de d\u00e9compression, elle surpasse LZMA de 1,5 \u00e0 8 fois (mais est plus lente que zlib). Compar\u00e9 \u00e0 ZSTD, LZHAM excelle en termes d'efficacit\u00e9 de compression, mais est presque un ordre de grandeur plus lent pour la vitesse d'encodage et l\u00e9g\u00e8rement en retard pour la vitesse de d\u00e9codage.<\/p>\n

Rich Geldreich a transf\u00e9r\u00e9 les biblioth\u00e8ques de compression qu'il a d\u00e9velopp\u00e9es<\/p>\n

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

Source : 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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