How to decode an image with low depth ?

[Md. Kayesh]

hi,

I am using CImageDecoder to decode an image(any type rgb image) to bitmap. While decoded using the code below:

ibitmap->Create(iImageDecoder->FrameInfo(0).iOverallSizeInPixels, iImageDecoder->FrameInfo(0).iFrameDisplayMode);
iState = EConverting;
iImageDecoder->Convert(&iStatus,*ibitmap,0);
SetActive();

This code works asynchronously. After i get the bitmap, i find that each pixel is having depth 4, i.e. red, green, blue and alpha. But i need only image decoded as black & white... or grey-scale (of depth 1). I need it because of low device memory. Later on i have to resize the image that should be done using the same depth, that is depth 1. I looked at SDK but could not understand everything there. There they used a term as "EGray2", and "EGray256", but it is used in Simple on/off masking . Any of your suggestion would help me.

[symbianyucca]

check what values can be given in the place you are using iImageDecoder->FrameInfo(0).iFrameDisplayMode

[Md. Kayesh]

Yes that's a good suggestion. I am applying soon.