bool VLCVideoWrapper::updateImage(void)
{
//VLC wants the current frame to be displayed
if(_NextFrameReady)
{
if(getImage() == NULL)
{
_NextFrameReady = false;
ImageUnrecPtr NewImage(Image::create());
setImage(NewImage);
try
{
UInt32 Width(getWidth()),
Height(getHeight());
_VideoMemContext._lock->acquire();
getImage()->set(
#if BYTE_ORDER == LITTLE_ENDIAN
Image::OSG_BGR_PF,
#else
Image::OSG_RGB_PF,
#endif
Width,
Height,
1,1,1,0.0,
reinterpret_cast<const UInt8*>(_VideoMemContext._pixels),
Image::OSG_UINT8_IMAGEDATA);
_VideoMemContext._lock->release();
}
catch(...)
{
SWARNING << "VLCVideoWrapper::updateImage(): Error updateing Image object." << std::endl;
setImage(NULL);
return false;
}
}
else
{
getImage()->setData(reinterpret_cast<const UInt8*>(_VideoMemContext._pixels));
}
libvlc_state_t currentState = libvlc_media_player_get_state(_MediaPlayer);
checkVLCError("Getting player state");
if(currentState == libvlc_Ended)
{
produceEnded();
}
getImage()->mirror(false,true);
}
return true;
}
bool DirectShowVideoWrapper::updateImage(void)
{
if (_VideoInitialized)
{
// Only need to do this once
if (!_FrameBuffer)
{
// The Sample Grabber requires an arbitrary buffer
// That we only know at runtime.
// (width * height * 3) bytes will not work.
HRESULT result;
result = _pSampleGrabber->GetCurrentBuffer(&_BufferSize, NULL);
if(FAILED(result))
{
return false;
}
if(_BufferSize<=0)
{
SWARNING << "_BufferSize<=0" << std::endl;
return false;
}
if(_BufferSize>10000000)
{
SWARNING << "_BufferSize>10000000" << std::endl;
return false;
}
_FrameBuffer = new long[_BufferSize];
}
_pSampleGrabber->GetCurrentBuffer(&_BufferSize, (long*)_FrameBuffer);
if(getImage() == NULL ||
getImage()->getWidth() != _VideoWidth ||
getImage()->getHeight() != _VideoHeight)
{
ImageUnrecPtr NewImage(Image::create());
setImage(NewImage);
try
{
getImage()->set(Image::OSG_BGR_PF,
_VideoWidth,
_VideoHeight,
1,1,1,0.0,
reinterpret_cast<const UInt8*>(_FrameBuffer),
Image::OSG_UINT8_IMAGEDATA);
}
catch(...)
{
setImage(NULL);
return false;
}
}
else
{
getImage()->setData(reinterpret_cast<const UInt8*>(_FrameBuffer));
}
if(!_ReachEndOnce && getPosition() == getDuration())
{
_ReachEndOnce = true;
produceEnded();
}
return true;
}
return false;
}
