yyc12345/libcmo21
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

refactor VxImageDescEx

Browse Source
This commit is contained in:
yyc12345
2023-09-11 14:39:07 +08:00
parent 1e0ed360bd
commit e2647ed39b
7 changed files with 195 additions and 149 deletions
Download Patch File Download Diff File Expand all files Collapse all files

82
LibCmo/VxMath/VxMath.cpp
View File

@ -1,4 +1,6 @@
#include "VxMath.hpp"
#include "stb_image.h"
#include "stb_image_resize.h"
namespace LibCmo::VxMath {
@ -24,26 +26,68 @@ namespace LibCmo::VxMath {
#pragma region Graphic Utilities
//CK2::CKDWORD VxGetBitCount(CK2::CKDWORD dwMask) {
// if (dwMask == 0u) return 0;
// dwMask >>= VxGetBitShift(dwMask);
// CK2::CKDWORD count = 0;
// while ((dwMask & 1u) == 0u) {
// dwMask >>= 1u;
// ++count;
// }
// return count;
//}
void VxDoBlit(const VxImageDescEx* origin, VxImageDescEx* dst) {
if (dst == nullptr || origin == nullptr) return;
if (!dst->IsValid() || !origin->IsValid()) return;
//CK2::CKDWORD VxGetBitShift(CK2::CKDWORD dwMask) {
// if (dwMask == 0u) return 0;
// CK2::CKDWORD count = 0;
// while ((dwMask & 1u) != 0u) {
// dwMask >>= 1u;
// ++count;
// }
// return count;
//}
// if have same size, directly copy it
if (dst->IsHWEqual(*origin)) {
std::memcpy(dst->GetMutableImage(), origin->GetImage(), dst->GetImageSize());
return;
}
// perform resize by stb
stbir_resize(
origin->GetImage(), static_cast<int>(origin->GetWidth()), static_cast<int>(origin->GetHeight()), 0,
dst->GetMutableImage(), static_cast<int>(dst->GetWidth()), static_cast<int>(dst->GetHeight()), 0,
STBIR_TYPE_UINT8, 4, STBIR_ALPHA_CHANNEL_NONE, 0, // no alpha channel, mean we treat alpha channel as a normal color factor.
STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP,
STBIR_FILTER_BOX, STBIR_FILTER_BOX,
STBIR_COLORSPACE_SRGB, nullptr
);
}
void VxDoBlitUpsideDown(const VxImageDescEx* origin, VxImageDescEx* dst) {
if (dst == nullptr || origin == nullptr) return;
if (!dst->IsValid() || !origin->IsValid()) return;
// if size is not matched, return
if (!dst->IsHWEqual(*origin)) {
return;
}
// copy and swap data by line
CK2::CKDWORD height = dst->GetHeight(),
rowsize = sizeof(uint32_t) * dst->GetWidth();
for (CK2::CKDWORD row = 0; row < height; ++row) {
std::memcpy(
dst->GetMutableImage() + (row * rowsize),
dst->GetImage() + ((height - row - 1) * rowsize),
rowsize
);
}
}
CK2::CKDWORD VxGetBitCount(CK2::CKDWORD dwMask) {
if (dwMask == 0u) return 0;
dwMask >>= VxGetBitShift(dwMask);
CK2::CKDWORD count = 0;
while ((dwMask & 1u) == 0u) {
dwMask >>= 1u;
++count;
}
return count;
}
CK2::CKDWORD VxGetBitShift(CK2::CKDWORD dwMask) {
if (dwMask == 0u) return 0;
CK2::CKDWORD count = 0;
while ((dwMask & 1u) != 0u) {
dwMask >>= 1u;
++count;
}
return count;
}
//CK2::CKDWORD VxScaleFactor(CK2::CKDWORD val, CK2::CKDWORD srcBitCount, CK2::CKDWORD dstBitCount) {
// if (srcBitCount == dstBitCount) return val;