ae.utils.graphics.im_convert source code

1 /**
2  * ImageMagick "convert" program wrapper
3  *
4  * License:
5  *   This Source Code Form is subject to the terms of
6  *   the Mozilla Public License, v. 2.0. If a copy of
7  *   the MPL was not distributed with this file, You
8  *   can obtain one at http://mozilla.org/MPL/2.0/.
9  *
10  * Authors:
11  *   Vladimir Panteleev <ae@cy.md>
12  */
13 
14 module ae.utils.graphics.im_convert;
15 
16 import ae.sys.cmd;
17 import ae.sys.imagemagick;
18 import ae.utils.graphics.color;
19 import ae.utils.graphics.image;
20 
21 /// Invoke ImageMagick's `convert` program to parse the given data.
22 auto parseViaIMConvert(COLOR)(const(void)[] data)
23 {
24 	string[] convertFlags;
25 	static if (is(COLOR : BGR))
26 	{
27 	//	convertFlags ~= ["-colorspace", "rgb"];
28 	//	convertFlags ~= ["-depth", "24"];
29 		convertFlags ~= ["-type", "TrueColor"];
30 		convertFlags ~= ["-alpha", "off"];
31 	}
32 	else
33 	static if (is(COLOR : BGRA))
34 	{
35 		convertFlags ~= ["-type", "TrueColorAlpha"];
36 		convertFlags ~= ["-alpha", "on"];
37 	}
38 	return pipe(["convert".imageMagickBinary()] ~ convertFlags ~ ["-[0]", "bmp:-"], data).viewBMP!COLOR();
39 }
40 
41 /// ditto
42 auto parseViaIMConvert(C = TargetColor, TARGET)(const(void)[] data, auto ref TARGET target)
43 	if (isWritableView!TARGET && isTargetColor!(C, TARGET))
44 {
45 	return data.parseViaIMConvert!(ViewColor!TARGET)().copy(target);
46 }
47 
48 unittest
49 {
50 	if (false)
51 	{
52 		void[] data;
53 		parseViaIMConvert!BGR(data);
54 
55 		Image!BGR i;
56 		parseViaIMConvert!BGR(data, i);
57 	}
58 }