Hello, I've been working on creating a program that will output the Camera Preview with various user-chosen filters (SnapPhoto has this functionality) and I've run into some problems.
I have the following set up. - Camera preview set to a SurfaceView (I had to set PUSH_BUFFERS or the program fails). - Have another SurfaceView lieing over the Camera preview SurfaceView (in a FrameLayout) - Registered a camera callback for the preview data My problem is that the output is extremely choppy and the program quickly becomes unresponsive. I've set up a thread to do the processing, but this doesn't seem to help. I've implemented the decoding (into rgb_8888) algorithm (courtesy of dmanpearl http://groups.google.com/group/android-developers/msg/d3b29d3ddc8abf9b ) Is there anything I'm doing blatantly wrong or something I could fix to make this program run at a decent speed? Sorry if the code has poor style, I'm sort of an Android beginner and, for that matter, Java beginner. This code is inside the second SurfaceView, lieing over the Camera preview SurfaceView public void onPreviewFrame(byte[] data, Camera camera) { if(hasSurface) { System.arraycopy(data, 0, _data, 0, data.length); outputThread = new HandleOutput(); outputThread.start(); } } where HandleOutput() extends Thread, and _data is a global array. and this is inside the Thread public void run() { while(!done) { canvas = mHolder.lockCanvas(); PixelManip.decodeYUV(rgb, _data, width, height); //courtesy of dmanpearl (link above) PixelManip.applyFilter(filterID, _data, rgb); bitmap.setPixels(rgb, 0, width, 0, 0, width, height); canvas.drawBitmap(bitmap, 0, 0, paint); mHolder.unlockCanvasAndPost(canvas); done = true; } } Thanks, Greg P.S. Let me know if I should post any more code. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
