SAIL chithunzi decoding library likupezeka

Pansi pa MIT layisensi losindikizidwa cross-platform image decoding library SAIL. SAIL ndikusinthanso dzina la ma codec kuchokera kwa wowonera kwanthawi yayitali osathandizidwa omwe adalembedwanso mu C KSquirrel, koma ndi API yapamwamba kwambiri komanso zosintha zambiri. Omvera omwe mukufuna: owonera zithunzi, kukonza masewera, kuyika zithunzi m'makumbukidwe ndi zolinga zina. Laibulale ikukonzedwa, koma ikugwiritsidwa ntchito kale. Kugwirizana kwa ma code binary ndi magwero sikutsimikiziridwa panthawiyi yachitukuko.

Zida:

• Laibulale yosavuta, yophatikizika komanso yachangu yolembedwa mu C yopanda zipani zachitatu (kupatula ma codec);
• Zosavuta, zomveka komanso nthawi yomweyo API yamphamvu pazosowa zonse;
• Zomangamanga za C ++;
• Mawonekedwe azithunzi amathandizidwa ndi ma codec odzaza mwamphamvu;
• Werengani (ndi kulemba) zithunzi kuchokera mufayilo, kukumbukira, kapenanso komwe mumachokera;
• Kusankha mtundu wa fano powonjezera fayilo, kapena mwa nambala yamatsenga;
• Mawonekedwe omwe athandizidwa pano: png (werengani, Mawindo okha), JPEG (werengani, lembani) PNG (werengani, lembani).
  Ntchito yowonjezera mawonekedwe atsopano ikuchitika. KSquirrel-libs imathandizidwa ndi mitundu pafupifupi 60 mwanjira ina, mitundu yotchuka kwambiri imakhala yoyamba pamzere;

• Werengani ntchito zimatha kutulutsa ma pixel mu RGB ndi RGBA;
• Ma codec ena amatha kutulutsa ma pixel mu mndandanda wokulirapo wamawonekedwe;
• Ma codec ambiri amathanso kutulutsa ma pixel a SOURCE. Izi ndizothandiza, mwachitsanzo, kwa iwo omwe akufuna kudziwa zambiri kuchokera ku zithunzi za CMYK kapena YCCK;
• Kuwerenga ndi kulemba mbiri ya ICC;
• Zitsanzo mu C, Qt, SDL;
• Anathandiza nsanja:
  Windows (okhazikitsa), macOS (brew) ndi Linux (Debian).

Zomwe SAIL sizipereka:

• Kusintha kwazithunzi;
• Ntchito zosinthira danga kupatula zomwe zimaperekedwa ndi ma codec (libjpeg, etc.);
• Ntchito zoyang'anira mitundu (kugwiritsa ntchito mbiri ya ICC, etc.)

Chitsanzo chosavuta cha decoding mu C:

struct sail_context *context;

SAIL_TRY(sail_init(&context));

struct sail_image *chithunzi;
char osasainidwa * chithunzi_pixels;

SAIL_TRY(sail_read(njira,
nkhani,
&chithunzi,
(zopanda **)&image_pixels));

/*
* Apa konza ma pixel omwe adalandira.
* Kuti muchite izi, gwiritsani ntchito chithunzi-> m'lifupi, chithunzi-> kutalika, chithunzi->bytes_per_line,
* ndi chithunzi->pixel_format.
*/

/* Konza */
zaulere (zithunzi_pixels);
sail_destroy_image(chithunzi);

Kufotokozera mwachidule magawo a API:

• Newbie: "Ndikufuna kutsitsa JPEG iyi"
• Zotsogola: "Ndikufuna kutsitsa GIF yojambula iyi kuchokera pamtima"
• Osambira m'madzi akuya: "Ndikufuna kuyika GIF yojambulayi kuchokera pamtima ndikukhala ndi mphamvu zowongolera ma codec ndi ma pixel omwe ndasankha."
• Technical Diver: "Ndikufuna zonse pamwambapa, ndi gwero langa la data"

Opikisana nawo mwachindunji kuchokera kudera lomwelo:

• FreeImage
• Mdyerekezi
• SDL_Image
• WIC
• imfa2
• Boost.GIL
• gdk-pixbuf

Kusiyana ndi malaibulale ena:

• API yaumunthu yokhala ndi mabungwe omwe akuyembekezeka - zithunzi, mapaleti, ndi zina.
• Ma codec ambiri amatha kutulutsa zambiri kuposa ma pixel a RGB/RGBA.
• Ma codec ambiri amatha kutulutsa ma pixel oyambilira osasintha kukhala RGB.
• Mutha kulemba ma codec m'chilankhulo chilichonse, ndikuwonjezera / kuchotsa popanda kubweza pulojekiti yonse.
• Sungani zambiri za chithunzi choyambirira.
• "Kufufuza" ndi njira yopezera zambiri za chithunzi popanda kuyika deta ya pixel.
• Kukula ndi liwiro.

Source: opennet.ru