blob: 5c89bd4726e2e30a3ffca86bfaa1413ff2dbd421 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// This code is in the public domain -- castanyo@yahoo.es
#pragma once
#ifndef NV_IMAGE_H
#define NV_IMAGE_H
#include "nvcore/nvcore.h"
#include "nvcore/Debug.h" // nvDebugCheck
#include "nvcore/Utils.h" // isPowerOfTwo
// Function linkage
#if NVIMAGE_SHARED
#ifdef NVIMAGE_EXPORTS
#define NVIMAGE_API DLL_EXPORT
#define NVIMAGE_CLASS DLL_EXPORT_CLASS
#else
#define NVIMAGE_API DLL_IMPORT
#define NVIMAGE_CLASS DLL_IMPORT
#endif
#else
#define NVIMAGE_API
#define NVIMAGE_CLASS
#endif
namespace nv {
// Some utility functions:
inline uint computeBitPitch(uint w, uint bitsize, uint alignmentInBits)
{
nvDebugCheck(isPowerOfTwo(alignmentInBits));
return ((w * bitsize + alignmentInBits - 1) / alignmentInBits) * alignmentInBits;
}
inline uint computeBytePitch(uint w, uint bitsize, uint alignmentInBytes)
{
uint pitch = computeBitPitch(w, bitsize, 8*alignmentInBytes);
nvDebugCheck((pitch & 7) == 0);
return (pitch + 7) / 8;
}
} // nv namespace
#endif // NV_IMAGE_H
|