[Gdal-dev] Block size consistency

[Ozy Sjahputera]

If we have a multi-channel image, is it safe to assume that the block height and width are the same for all channels?

e.g.

suppose DS is a (GDALDataset*) of a 4-channel image, then
int widthi, heighti, widthj, heightj;
(DS->GetRasterBand(i))->GetBlockSize( &widthi, &heightj );
(DS->GetRasterBand(j))->GetBlockSize( &widthi, &heightj );

are widthi == widthj and heighti == heightj for all i != j ? 

Thanks
Ozy