forked from KolibriOS/kolibrios
121 lines
3.3 KiB
Plaintext
121 lines
3.3 KiB
Plaintext
(*
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Copyright 2016, 2021, 2022 Anton Krotov
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This file is part of CEdit.
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CEdit is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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CEdit is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with CEdit. If not, see <http://www.gnu.org/licenses/>.
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*)
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MODULE LibImg;
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IMPORT SYSTEM, KOSAPI, File;
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VAR
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file : INTEGER;
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img_decode : PROCEDURE (data, size, options: INTEGER): INTEGER;
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img_to_rgb2 : PROCEDURE (data, data_rgb: INTEGER);
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img_scale : PROCEDURE (src, crop_x, crop_y, crop_width, crop_height, dst, scale, inter, param1, param2: INTEGER): INTEGER;
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img_destroy* : PROCEDURE (img: INTEGER);
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PROCEDURE GetInf*(img: INTEGER; VAR sizeX, sizeY, data: INTEGER);
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BEGIN
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SYSTEM.GET(img + 4, sizeX);
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SYSTEM.GET(img + 8, sizeY);
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SYSTEM.GET(img + 24, data);
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END GetInf;
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PROCEDURE GetImg*(ptr, n, Width: INTEGER; VAR sizeY: INTEGER): INTEGER;
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VAR image_data, dst, x, y, type, rgb, data: INTEGER;
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BEGIN
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image_data := img_decode(ptr, n, 0);
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IF image_data # 0 THEN
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SYSTEM.GET(image_data + 4, x);
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SYSTEM.GET(image_data + 8, y);
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SYSTEM.GET(image_data + 20, type);
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IF type # 2 THEN
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rgb := KOSAPI.malloc(x * y * 3);
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IF rgb # 0 THEN
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img_to_rgb2(image_data, rgb);
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SYSTEM.GET(image_data + 24, data);
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data := KOSAPI.free(data);
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SYSTEM.PUT(image_data + 24, rgb);
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SYSTEM.PUT(image_data + 20, 2)
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ELSE
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img_destroy(image_data);
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image_data := 0
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END
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END;
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IF (x > Width) & (image_data # 0) THEN
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dst := img_scale(image_data, 0, 0, x, y, dst, 3, 1, Width, (y * Width) DIV x);
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img_destroy(image_data);
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image_data := dst
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END;
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IF image_data # 0 THEN
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SYSTEM.GET(image_data + 8, sizeY)
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END
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END
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RETURN image_data
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END GetImg;
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PROCEDURE LoadFromFile* (FName: ARRAY OF CHAR; Width: INTEGER; VAR sizeY: INTEGER): INTEGER;
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VAR F: File.FS; n, size, res: INTEGER;
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BEGIN
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res := 0;
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F := File.Open(FName);
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IF F # NIL THEN
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size := File.Seek(F, 0, File.SEEK_END);
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n := File.Seek(F, 0, File.SEEK_BEG);
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file := KOSAPI.malloc(size + 1024);
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IF file # 0 THEN
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n := File.Read(F, file, size);
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res := GetImg(file, n, Width, sizeY);
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n := KOSAPI.free(file)
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END;
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File.Close(F)
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END
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RETURN res
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END LoadFromFile;
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PROCEDURE load;
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VAR Lib: INTEGER;
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PROCEDURE GetProc(Lib, v: INTEGER; name: ARRAY OF CHAR);
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VAR a: INTEGER;
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BEGIN
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a := KOSAPI.GetProcAdr(name, Lib);
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ASSERT(a # 0);
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SYSTEM.PUT(v, a)
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END GetProc;
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BEGIN
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Lib := KOSAPI.LoadLib("/sys/Lib/Libimg.obj");
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GetProc(Lib, SYSTEM.ADR(img_decode), "img_decode");
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GetProc(Lib, SYSTEM.ADR(img_destroy), "img_destroy");
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GetProc(Lib, SYSTEM.ADR(img_to_rgb2), "img_to_rgb2");
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GetProc(Lib, SYSTEM.ADR(img_scale), "img_scale");
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END load;
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BEGIN
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load
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END LibImg.
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