70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
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#include "texception.h"
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//#include "tfxparam.h"
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#include "stdfx.h"
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namespace {
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TPixel32 unmultiply(const TPixel32 &pix) {
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if (!pix.m) return pix;
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double depremult = 255.0 / pix.m;
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return TPixel32((UCHAR)(pix.r * depremult), (UCHAR)(pix.g * depremult),
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(UCHAR)(pix.b * depremult), pix.m);
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}
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}
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//===================================================================
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class UnmultiplyFx : public TStandardRasterFx {
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FX_PLUGIN_DECLARATION(UnmultiplyFx)
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TRasterFxPort m_input;
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public:
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UnmultiplyFx() { addInputPort("Source", m_input); }
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~UnmultiplyFx(){};
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bool doGetBBox(double frame, TRectD &bBox, const TRenderSettings &info) override {
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if (m_input.isConnected())
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return m_input->doGetBBox(frame, bBox, info);
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else {
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bBox = TRectD();
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return false;
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}
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}
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void doCompute(TTile &tile, double frame, const TRenderSettings &ri) override;
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bool canHandle(const TRenderSettings &info, double frame) override { return true; }
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};
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//------------------------------------------------------------------------------
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void UnmultiplyFx::doCompute(TTile &tile, double frame,
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const TRenderSettings &ri) {
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if (!m_input.isConnected()) return;
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m_input->compute(tile, frame, ri);
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TRaster32P raster32 = tile.getRaster();
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assert(raster32); // per ora gestisco solo i Raster32
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int j;
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raster32->lock();
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for (j = 0; j < raster32->getLy(); j++) {
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TPixel32 *pix = raster32->pixels(j);
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TPixel32 *endPix = pix + raster32->getLx();
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while (pix < endPix) {
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if (pix->m) {
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double depremult = 255.0 / pix->m;
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pix->r = (UCHAR)(pix->r * depremult);
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pix->g = (UCHAR)(pix->g * depremult);
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pix->b = (UCHAR)(pix->b * depremult);
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}
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//*pix=unmultiply(*pix);
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pix++;
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}
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}
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raster32->unlock();
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}
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FX_PLUGIN_IDENTIFIER(UnmultiplyFx, "unmultiplyFx");
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