camera - How to do HDR capture based on HAL3? -


i want hdr capture based on hal3, have 2 problem now. problem 1: know hdr need snapshot 3 image. can realized sending 3 capture requests, don't think it's idea. know how solve problem? problem 2: hdr need different exposure time 3 image, 1 image must take short exposure time, 1 image must take middle exposure time , last 1 must take long exposure time. want know how achieve effect.

if have experience in android camera in hal3, or have example code, can tell me? in troble in long time. thank much!


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