1 #ifndef _DEARGB_H
2 #define _DEARGB_H
3 /*-------------------------------------------------------------------------
4 * drawElements Image Library
5 * --------------------------
6 *
7 * Copyright 2014 The Android Open Source Project
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 *
21 *//*!
22 * \file
23 * \brief Image library.
24 *//*--------------------------------------------------------------------*/
25
26 #include "deDefs.h"
27 #include "deInt32.h"
28
29 /* ARGB color in descending A, R, G, B order (alpha is in most significant byte). */
30 typedef deUint32 deARGB;
31
deARGB_set(int r,int g,int b,int a)32 DE_INLINE deARGB deARGB_set (int r, int g, int b, int a)
33 {
34 DE_ASSERT(deInBounds32(r, 0, 256));
35 DE_ASSERT(deInBounds32(g, 0, 256));
36 DE_ASSERT(deInBounds32(b, 0, 256));
37 DE_ASSERT(deInBounds32(a, 0, 256));
38 return (a<<24) | (r<<16) | (g<<8) | (b<<0);
39 }
40
deARGB_white(void)41 DE_INLINE deARGB deARGB_white (void) { return deARGB_set(0xFF, 0xFF, 0xFF, 0xFF); }
deARGB_black(void)42 DE_INLINE deARGB deARGB_black (void) { return deARGB_set(0, 0, 0, 0xFF); }
43
deARGB_getRed(deARGB argb)44 DE_INLINE int deARGB_getRed (deARGB argb) { return (int)((argb >> 16) & 0xFF); }
deARGB_getGreen(deARGB argb)45 DE_INLINE int deARGB_getGreen (deARGB argb) { return (int)((argb >> 8) & 0xFF); }
deARGB_getBlue(deARGB argb)46 DE_INLINE int deARGB_getBlue (deARGB argb) { return (int)((argb >> 0) & 0xFF); }
deARGB_getAlpha(deARGB argb)47 DE_INLINE int deARGB_getAlpha (deARGB argb) { return (int)((argb >> 24) & 0xFF); }
48
deARGB_multiply(deARGB argb,int f)49 DE_INLINE deARGB deARGB_multiply (deARGB argb, int f)
50 {
51 DE_ASSERT(deInRange32(f, 0, 256));
52 {
53 int r = (deARGB_getRed(argb) * f + 128) >> 8;
54 int g = (deARGB_getGreen(argb) * f + 128) >> 8;
55 int b = (deARGB_getBlue(argb) * f + 128) >> 8;
56 int a = (deARGB_getAlpha(argb) * f + 128) >> 8;
57 return deARGB_set(r, g, b, a);
58 }
59 }
60
deARGB_add(deARGB a,deARGB b)61 DE_INLINE deARGB deARGB_add (deARGB a, deARGB b)
62 {
63 return deARGB_set(deClamp32(deARGB_getRed(a) + deARGB_getRed(b), 0, 255),
64 deClamp32(deARGB_getGreen(a) + deARGB_getGreen(b), 0, 255),
65 deClamp32(deARGB_getBlue(a) + deARGB_getBlue(b), 0, 255),
66 deClamp32(deARGB_getAlpha(a) + deARGB_getAlpha(b), 0, 255));
67 }
68
69 #endif /* _DEARGB_H */
70