Java tutorial
//package com.java2s; public class Main { public static byte[] decodeYUV420SP2RGB(byte[] yuv420sp, int width, int height) { final int frameSize = width * height; byte[] rgbBuf = new byte[frameSize * 3]; // if (rgbBuf == null) throw new NullPointerException("buffer 'rgbBuf' is null"); if (rgbBuf.length < frameSize * 3) throw new IllegalArgumentException( "buffer 'rgbBuf' size " + rgbBuf.length + " < minimum " + frameSize * 3); if (yuv420sp == null) throw new NullPointerException("buffer 'yuv420sp' is null"); if (yuv420sp.length < frameSize * 3 / 2) throw new IllegalArgumentException( "buffer 'yuv420sp' size " + yuv420sp.length + " < minimum " + frameSize * 3 / 2); int i = 0, y = 0; int uvp = 0, u = 0, v = 0; int y1192 = 0, r = 0, g = 0, b = 0; for (int j = 0, yp = 0; j < height; j++) { uvp = frameSize + (j >> 1) * width; u = 0; v = 0; for (i = 0; i < width; i++, yp++) { y = (0xff & ((int) yuv420sp[yp])) - 16; if (y < 0) y = 0; if ((i & 1) == 0) { v = (0xff & yuv420sp[uvp++]) - 128; u = (0xff & yuv420sp[uvp++]) - 128; } y1192 = 1192 * y; r = (y1192 + 1634 * v); g = (y1192 - 833 * v - 400 * u); b = (y1192 + 2066 * u); if (r < 0) r = 0; else if (r > 262143) r = 262143; if (g < 0) g = 0; else if (g > 262143) g = 262143; if (b < 0) b = 0; else if (b > 262143) b = 262143; rgbBuf[yp * 3] = (byte) (r >> 10); rgbBuf[yp * 3 + 1] = (byte) (g >> 10); rgbBuf[yp * 3 + 2] = (byte) (b >> 10); } } // for return rgbBuf; } }