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Added Scale2x video filter and rename Scanlines filter (thanks Tanooki16!) (#979)

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- Added the Scale2x video filter
- Rename the Scanlines filter to TV Mode
This commit is contained in:
bladeoner 2021-11-25 21:33:45 +01:00 committed by GitHub
parent a9b9303f43
commit 97dbf6caa0
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 38 additions and 6 deletions
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41
source/filter.cpp
View File

@ -34,7 +34,8 @@ static uint16 RGBtoBright[1<<NUMBITS];
TFilterMethod FilterMethod;
template<int GuiScale> void RenderHQ2X (uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
template<int GuiScale> void Scanlines (uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
template<int GuiScale> void RenderScale2X (uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
template<int GuiScale> void RenderTVMode (uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
const char* GetFilterName (RenderFilter filterID)
{
@ -45,7 +46,8 @@ const char* GetFilterName (RenderFilter filterID)
case FILTER_HQ2X: return "hq2x";
case FILTER_HQ2XS: return "hq2x Soft";
case FILTER_HQ2XBOLD: return "hq2x Bold";
case FILTER_SCANLINES: return "Scanlines";
case FILTER_SCALE2X: return "Scale2x";
case FILTER_TVMODE: return "TV Mode";
}
}
@ -57,7 +59,8 @@ static TFilterMethod FilterToMethod (RenderFilter filterID)
case FILTER_HQ2X: return RenderHQ2X<FILTER_HQ2X>;
case FILTER_HQ2XS: return RenderHQ2X<FILTER_HQ2XS>;
case FILTER_HQ2XBOLD: return RenderHQ2X<FILTER_HQ2XBOLD>;
case FILTER_SCANLINES: return Scanlines<FILTER_SCANLINES>;
case FILTER_SCALE2X: return RenderScale2X<FILTER_SCALE2X>;
case FILTER_TVMODE: return RenderTVMode<FILTER_TVMODE>;
default: return 0;
}
}
@ -72,7 +75,8 @@ int GetFilterScale(RenderFilter filterID)
case FILTER_HQ2X:
case FILTER_HQ2XS:
case FILTER_HQ2XBOLD:
case FILTER_SCANLINES:
case FILTER_SCALE2X:
case FILTER_TVMODE:
return 2;
}
}
@ -493,7 +497,34 @@ void RenderHQ2X (uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
}
template<int GuiScale>
void Scanlines (uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height)
void RenderScale2X (uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height)
{
unsigned int nextlineSrc = srcPitch / sizeof(uint16);
uint16 *p = (uint16 *)srcPtr;
unsigned int nextlineDst = dstPitch / sizeof(uint16);
uint16 *q = (uint16 *)dstPtr;
while (height--) {
for (int i = 0; i < width; ++i) {
uint16 B = *(p + i - nextlineSrc);
uint16 D = *(p + i - 1);
uint16 E = *(p + i);
uint16 F = *(p + i + 1);
uint16 H = *(p + i + nextlineSrc);
*(q + (i << 1)) = D == B && B != F && D != H ? D : E;
*(q + (i << 1) + 1) = B == F && B != D && F != H ? F : E;
*(q + (i << 1) + nextlineDst) = D == H && D != B && H != F ? D : E;
*(q + (i << 1) + nextlineDst + 1) = H == F && D != H && B != F ? F : E;
}
p += nextlineSrc;
q += nextlineDst << 1;
}
}
template<int GuiScale>
void RenderTVMode (uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height)
{
unsigned int nextlineSrc = srcPitch / sizeof(uint16);
uint16 *p = (uint16 *)srcPtr;

3
source/filter.h
View File

@ -26,7 +26,8 @@ enum RenderFilter{
FILTER_HQ2X,
FILTER_HQ2XS,
FILTER_HQ2XBOLD,
FILTER_SCANLINES,
FILTER_SCALE2X,
FILTER_TVMODE,
NUM_FILTERS
};