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POConverting preview frame to bitmap
 

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    <p>I know the subject was on the board many times, but i can not get it work anyhow... I want to save view frames from preview to jpeg files. It looks more or less(code is simplified- without additional logic, exception etc) like this...</p> <pre><code>public void onPreviewFrame(byte[] data, Camera camera) { int width = camera.getParameters().getPreviewSize().width; int height = camera.getParameters().getPreviewSize().height; final int[] rgb = decodeYUV420SP(data, width, height); Bitmap bmp = Bitmap.createBitmap(rgb, width, height,Bitmap.Config.ARGB_8888); String filename="/sdcard/file" + (index++)+ ".jpg"; FileOutputStream out; out = new FileOutputStream(filename); bmp.compress(Bitmap.CompressFormat.JPEG, 90, out); out.flush(); out.close(); out=null; } </code></pre> <p>Here is the one of the methods i tried to convert colors(from this board i believe)</p> <pre><code>public int[] decodeYUV420SP( byte[] yuv420sp, int width, int height) { final int frameSize = width * height; int rgb[]=new int[width*height]; for (int j = 0, yp = 0; j &lt; height; j++) { int uvp = frameSize + (j &gt;&gt; 1) * width, u = 0, v = 0; for (int i = 0; i &lt; width; i++, yp++) { int y = (0xff &amp; ((int) yuv420sp[yp])) - 16; if (y &lt; 0) y = 0; if ((i &amp; 1) == 0) { v = (0xff &amp; yuv420sp[uvp++]) - 128; u = (0xff &amp; yuv420sp[uvp++]) - 128; } int y1192 = 1192 * y; int r = (y1192 + 1634 * v); int g = (y1192 - 833 * v - 400 * u); int b = (y1192 + 2066 * u); if (r &lt; 0) r = 0; else if (r &gt; 262143) r = 262143; if (g &lt; 0) g = 0; else if (g &gt; 262143) g = 262143; if (b &lt; 0) b = 0; else if (b &gt; 262143) b = 262143; rgb[yp] = 0xff000000 | ((r &lt;&lt; 6) &amp; 0xff0000) | ((g &gt;&gt; 2) &amp; 0xff00) | ((b &gt;&gt; 10) &amp; 0xff); } } return rgb; } </code></pre> <p>The problem is that the picture always looks like three 'strange green pictures'... I ama new user so i can't post it:(</p> <p>I dont know if it has something to do with the size or what but i am stuck... Can you support me with it?</p>
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