VDPosition guiPositionHandleCommand(WPARAM wParam, IVDPositionControl *pc) {
if (!inputVideoAVI) return -1;
switch(HIWORD(wParam)) {
case PCN_START:
pc->SetPosition(inputVideoAVI->getStart());
return inputVideoAVI->getStart();
case PCN_BACKWARD:
{
VDPosition pos = pc->GetPosition();
if (pos > inputVideoAVI->getStart()) {
pc->SetPosition(pos - 1);
return pos - 1;
}
}
break;
case PCN_FORWARD:
{
VDPosition pos = pc->GetPosition();
if (pos < inputVideoAVI->getEnd()) {
pc->SetPosition(pos + 1);
return pos + 1;
}
}
break;
case PCN_END:
pc->SetPosition(inputVideoAVI->getEnd());
return inputVideoAVI->getEnd();
case PCN_KEYPREV:
{
VDPosition lSample = inputVideoAVI->prevKey(pc->GetPosition());
if (lSample < 0) lSample = inputVideoAVI->getStart();
pc->SetPosition(lSample);
return lSample;
}
break;
case PCN_KEYNEXT:
{
VDPosition lSample = inputVideoAVI->nextKey(pc->GetPosition());
if (lSample < 0) lSample = inputVideoAVI->getEnd();
pc->SetPosition(lSample);
return lSample;
}
break;
}
return -1;
}
void guiPositionInitFromStream(IVDPositionControl *pc) {
if (!inputVideoAVI) return;
const VDFraction videoRate(inputVideoAVI->getRate());
pc->SetRange(inputVideoAVI->getStart(), inputVideoAVI->getEnd());
pc->SetFrameRate(videoRate);
}
void guiPositionBlit(HWND hWndClipping, VDPosition lFrame, int w, int h) {
if (lFrame<0) return;
try {
BITMAPINFOHEADER *dcf;
if (!inputVideoAVI)
SendMessage(hWndClipping, CCM_BLITFRAME2, 0, (LPARAM)NULL);
else {
dcf = inputVideoAVI->getDecompressedFormat();
if (lFrame < inputVideoAVI->getStart() || lFrame >= inputVideoAVI->getEnd())
SendMessage(hWndClipping, CCM_BLITFRAME2, 0, (LPARAM)NULL);
else {
Pixel32 *tmpmem;
const void *pFrame = inputVideoAVI->getFrame(lFrame);
int dch = abs(dcf->biHeight);
if (w>0 && h>0 && w!=dcf->biWidth && h != dch && (tmpmem = new Pixel32[((w+1)&~1)*h + ((dcf->biWidth+1)&~1)*dch])) {
VBitmap vbt(tmpmem, w, h, 32);
VBitmap vbs(tmpmem+((w+1)&~1)*h, dcf->biWidth, dch, 32);
VBitmap srcbm((void *)pFrame, dcf);
vbs.BitBlt(0, 0, &srcbm, 0, 0, -1, -1);
vbt.StretchBltBilinearFast(0, 0, w, h, &vbs, 0, 0, vbs.w, vbs.h);
VDPixmap px(VDAsPixmap(vbt));
SendMessage(hWndClipping, CCM_BLITFRAME2, 0, (LPARAM)&px);
delete[] tmpmem;
} else
SendMessage(hWndClipping, CCM_BLITFRAME2, 0, (LPARAM)&inputVideoAVI->getTargetFormat());
}
}
} catch(const MyError&) {
_RPT0(0,"Exception!!!\n");
}
}