Android-Save NV21 image as jpeg

Save a picture String FileName = "Img_" + string.valueof (Index) + ". jpg";  JPEG file name definition file Sdroot = environment.getexternalstoragedirectory ();    System path String dir = "/jpeg/";   Folder name File MkDir = new file (Sdroot, dir);     if (!mkdir.exists ()) {   mkdir.mkdirs ();   Directory does not exist, create}file picturefile = new File (sdroot, dir + fileName), if (!picturefile.exists ()) {   try {       Picturefile.createnewfile ();       FileOutputStream Filecon = new FileOutputStream (picturefile);       Yuvimage image = new Yuvimage (data, imageformat.nv21, width, height, null);   Save NV21 data to Yuvimage       //image compression       image.compresstojpeg (               new Rect (0, 0, image.getwidth (), Image.getheight ()),               Filecon);   Compress the NV21 format picture to a JPEG with a mass of 70 and get the JPEG data stream   }catch (IOException e)   {       e.printstacktrace ();   }}

This approach, often in Camera.PreviewCallbackUsed in:

@Overridepublic void Onpreviewframe (byte[] data, Camera camera) {}

Compress the NV21 data into JPEG and get the JPEG byte data, unzip the JPEG byte data into a single bitmap

@Overridepublic void Onpreviewframe (byte[] bytes, camera camera) {    yuvimage image = New Yuvimage (bytes, IMAGEFORMAT.N V21, width, height, null);            IMAGEFORMAT.NV21  640 480    bytearrayoutputstream outputsteam = new Bytearrayoutputstream ();    Image.compresstojpeg (New Rect (0, 0, image.getwidth (), Image.getheight ()),, Outputsteam); The NV21 format picture, compressed to a quality of 70 jpeg, and get JPEG data stream    byte[] jpegdata = Outputsteam.tobytearray ();                                                Get byte data from outputsteam options    options = new Bitmapfactory.options ();    Options.insamplesize = 1;    Bitmap bmp = Bitmapfactory.decodestream (Jpegdata, NULL, options);}

http://my.oschina.net/eclipse88/blog/80115

Android-Save NV21 image as jpeg