Android : toRGB565(byte[] yuvs, int width, int height, byte[] rgbs)

private void toRGB565(byte[] yuvs, int width, int height, byte[] rgbs) { //the end of the luminance data final int lumEnd = width * height; //points to the next luminance value pair int lumPtr = 0; //points to the next chromiance value pair int chrPtr = lumEnd; //points to the next byte output pair of RGB565 value int outPtr = 0; //the end of the current luminance scanline int lineEnd = width; while (true) { //skip back to the start of the chromiance values when necessary if (lumPtr == lineEnd) { if (lumPtr == lumEnd) break; //we've reached the end //division here is a bit expensive, but's only done once per scanline chrPtr = lumEnd + ((lumPtr >> 1) / width) * width; lineEnd += width; } //read the luminance and chromiance values final int Y1 = yuvs[lumPtr++] & 0xff; final int Y2 = yuvs[lumPtr++] & 0xff; final int Cr = (yuvs[chrPtr++] & 0xff) - 128; final int Cb = (yuvs[chrPtr++] & 0xff) - 128; int R, G, B; //generate first RGB components B = Y1 + ((454 * Cb) >> 8); if(B < 0) B = 0; else if(B > 255) B = 255; G = Y1 - ((88 * Cb + 183 * Cr) >> 8); if(G < 0) G = 0; else if(G > 255) G = 255; R = Y1 + ((359 * Cr) >> 8); if(R < 0) R = 0; else if(R > 255) R = 255; //NOTE: this assume little-endian encoding rgbs[outPtr++] = (byte) (((G & 0x3c) << 3) | (B >> 3)); rgbs[outPtr++] = (byte) ((R & 0xf8) | (G >> 5)); //generate second RGB components B = Y2 + ((454 * Cb) >> 8); if(B < 0) B = 0; else if(B > 255) B = 255; G = Y2 - ((88 * Cb + 183 * Cr) >> 8); if(G < 0) G = 0; else if(G > 255) G = 255; R = Y2 + ((359 * Cr) >> 8); if(R < 0) R = 0; else if(R > 255) R = 255; //NOTE: this assume little-endian encoding rgbs[outPtr++] = (byte) (((G & 0x3c) << 3) | (B >> 3)); rgbs[outPtr++] = (byte) ((R & 0xf8) | (G >> 5)); } }