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Sse scaling (#52)

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* Add CPUID functions for runtime dispatch
* Add SSE2 scaling
This commit is contained in:
mmcclaskey
2021-09-09 13:55:33 -04:00
committed by GitHub
parent dc21d5f97c
commit 0cb2c0ba9f
10 changed files with 521 additions and 1 deletions
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60
common/rfb/EncodeManager.cxx
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@@ -22,10 +22,12 @@
#include <omp.h>
#include <stdlib.h>
#include <rfb/cpuid.h>
#include <rfb/EncCache.h>
#include <rfb/EncodeManager.h>
#include <rfb/Encoder.h>
#include <rfb/Palette.h>
#include <rfb/scale_sse2.h>
#include <rfb/SConnection.h>
#include <rfb/ServerCore.h>
#include <rfb/SMsgWriter.h>
@@ -972,6 +974,64 @@ PixelBuffer *rfb::progressiveBilinearScale(const PixelBuffer *pb,
const uint16_t tgtw, const uint16_t tgth,
const float tgtdiff)
{
if (supportsSSE2()) {
if (tgtdiff >= 0.5f) {
ManagedPixelBuffer *newpb = new ManagedPixelBuffer(pb->getPF(), tgtw, tgth);
int oldstride, newstride;
const rdr::U8 *oldpx = pb->getBuffer(pb->getRect(), &oldstride);
rdr::U8 *newpx = newpb->getBufferRW(newpb->getRect(), &newstride);
SSE2_scale(oldpx, tgtw, tgth, newpx, oldstride, newstride, tgtdiff);
return newpb;
}
PixelBuffer *newpb;
uint16_t neww, newh, oldw, oldh;
bool del = false;
do {
oldw = pb->getRect().width();
oldh = pb->getRect().height();
neww = oldw / 2;
newh = oldh / 2;
newpb = new ManagedPixelBuffer(pb->getPF(), neww, newh);
int oldstride, newstride;
const rdr::U8 *oldpx = pb->getBuffer(pb->getRect(), &oldstride);
rdr::U8 *newpx = ((ManagedPixelBuffer *) newpb)->getBufferRW(newpb->getRect(),
&newstride);
SSE2_halve(oldpx, neww, newh, newpx, oldstride, newstride);
if (del)
delete pb;
del = true;
pb = newpb;
} while (tgtw * 2 < neww);
// Final, non-halving step
if (tgtw != neww || tgth != newh) {
oldw = pb->getRect().width();
oldh = pb->getRect().height();
newpb = new ManagedPixelBuffer(pb->getPF(), tgtw, tgth);
int oldstride, newstride;
const rdr::U8 *oldpx = pb->getBuffer(pb->getRect(), &oldstride);
rdr::U8 *newpx = ((ManagedPixelBuffer *) newpb)->getBufferRW(newpb->getRect(),
&newstride);
SSE2_scale(oldpx, tgtw, tgth, newpx, oldstride, newstride, tgtdiff);
if (del)
delete pb;
}
return newpb;
} // SSE2
if (tgtdiff >= 0.5f)
return bilinearScale(pb, tgtw, tgth, tgtdiff);