int QccWAVSubbandPyramidCopy(QccWAVSubbandPyramid *subband_pyramid1, const QccWAVSubbandPyramid *subband_pyramid2);
QccWAVSubbandPyramidCopy() copies the contexts of subband_pyramid2 to subband_pyramid1. If subband_pyramid1 is not allocated prior to the call to QccWAVSubbandPyramidCopy(), QccWAVSubbandPyramidAlloc(3) is called to allocate subband_pryamid1 to the same size as subband_pyramid2.
M. Antonini, M. Barlaud, P. Mathieu, and I. Daubechies, "Image Coding Using Wavelet Transform," IEEE Transactions on Image Processing, vol. 1, pp. 205-220, April 1992.