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dm368 resize问题



您好,专家,我用dm368做resize缩放yuv420图片的时候,设置的输出分辨率跟实际需要的图片分辨率不一样,比如要得到一幅320*240的图片,输出分辨率必须设置为640*120才行,宽度是实际图片的两倍,高度是一半。而且只能缩放Y分量,缩放C分量程序就不能运行。用的是psp里面的resize_420_420.c程序。内核是IPNC方案的内核。请问这是怎么回事?