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[Problem:]
In CameraService.c, we can only confirm one param for transform.
     transform = ISurface:BufferHeap:ROT_90;

My LCD resolution is HVGA (480x320). Camera app default layout is
Landscape.
Apply the above parameter (ROT_90), the preview screen is very
strange.

[Request]
How to support Rotation (90, 180, 270) on Camera preview ? Is it
possible to use SurfaceFlinger ?

Please give me some hints or tips ?

Thanks a lot.
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