Re: [android-developers] saving camera preview frames to a file with minimum slow-down

On Mon, Apr 2, 2012 at 10:42 AM, Qianqian Fang <fangqq@gmail.com> wrote:
> hi list
>
> I'd like to get some advice on optimizing file IO of a camera-frame
> processing code I am working on.
>
> I used the setPreviewCallbackWithBuffer() method to capture each
> preview frame and do some processing in the real-time. The processed
> frame (an int array) is then save to the sdcard. I found that by
> commenting out the file io block, my frame rate can go up to 30fps for
> a 512x512 preview size. However, with the data saving, the frame rate
> is only around 10 fps or less.
>
> Any suggestions to speed up this?

Offload saving to a worker thread?

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