OSErr CreateDecompSeqForGWorldData(GWorldPtr srcGWorld, Rect *srcBounds, MatrixRecordPtr mr, GWorldPtr imageDestination, ImageSequence *imageSeqID)
{
OSErr err;
ImageDescriptionHandle imageDesc = (ImageDescriptionHandle)NewHandle(sizeof(ImageDescription));
if (imageDesc)
{
err = MakeImageDescriptionForPixMap (GetGWorldPixMap(srcGWorld), &imageDesc);
err = DecompressSequenceBegin( imageSeqID,
imageDesc,
imageDestination,
0,
srcBounds,
mr,
srcCopy,
nil,
0,
codecNormalQuality,
bestSpeedCodec);
DisposeHandle((Handle)imageDesc);
}
else
{
err = MemError();
}
return err;
}
//------------------------------------------------------------------------
void pixel_map::draw(WindowRef window, const Rect *device_rect, const Rect *pmap_rect) const
{
if(m_pmap == nil || m_buf == NULL) return;
PixMapHandle pm = GetGWorldPixMap (m_pmap);
CGrafPtr port = GetWindowPort (window);
Rect dest_rect;
// Again, I used the Quicktime version.
// Good old 'CopyBits' does better interpolation when scaling
// but does not support all pixel depths.
MacSetRect (&dest_rect, 0, 0, this->width(), this->height());
ImageDescriptionHandle image_description;
MakeImageDescriptionForPixMap (pm, &image_description);
if (image_description != nil)
{
DecompressImage (GetPixBaseAddr (pm), image_description, GetPortPixMap (port), nil, &dest_rect, ditherCopy, nil);
DisposeHandle ((Handle) image_description);
}
}
