android - error on editing metadata org.apache.sanselan.ImageReadException: Couldn't read magic numbers to guess format -


i have video capture , video gallery image trying add custom metadata using sanselan library in android have got org.apache.sanselan.imagereadexception: couldn't read magic numbers guess exception.i have tried everywhere didnt solution.please me

this did

    file storagedirectory = environment.getexternalstoragepublicdirectory(environment.directory_pictures);     file image = file.createtempfile(imagefilename, ".jpg", storagedirectory);     imagefilelocation = image.getabsolutepath();     file dst = file.createtempfile(imagefilename, ".jpg", storagedirectory);     try {         new testgps().changeexifmetadata(image, dst);         system.out.println("data has been changed successfull!");         imagefilelocation = dst.getabsolutepath();

testgps.java

public class testgps { double db=0.3;  /**  * example illustrates how add/update exif metadata in jpeg file.  *  * @param jpegimagefile source image file.  * @param dst           output file.  * @throws ioexception  * @throws imagereadexception  * @throws imagewriteexception  */ public void changeexifmetadata(file jpegimagefile, file dst)         throws ioexception, imagereadexception, imagewriteexception {     outputstream os = null;     try {         tiffoutputset outputset = null;          // note metadata might null if no metadata found.         iimagemetadata metadata = sanselan.getmetadata(jpegimagefile);         jpegimagemetadata jpegmetadata = (jpegimagemetadata) metadata;         if (null != jpegmetadata) {             // note exif might null if no exif metadata found.             tiffimagemetadata exif = jpegmetadata.getexif();              if (null != exif) {                 // tiffimagemetadata class immutable (read-only).                 // tiffoutputset class represents exif data write.                 //                 // usually, want update existing exif metadata                 // changing                 // values of few fields, or adding field.                 // in these cases, easiest use getoutputset()                 // start "copy" of fields read image.                 outputset = exif.getoutputset();             }         }          // if file not contain exif metadata, create empty         // set of exif metadata. otherwise, keep of other         // existing tags.         if (null == outputset)             outputset = new tiffoutputset();          {             // example of how add field/tag output set.             //             // note should first remove field/tag if             // exists in directory, or may end duplicate             // tags. see above.             //             // fields/tags expected in exif directories;             // others can occur in more 1 directory (and have             // different meaning in different directories).             //             // taginfo constants contain description of             // directories associated given tag.             //             // see             // org.apache.sanselan.formats.tiff.constants.alltagconstants             //              tiffoutputfield aperture = tiffoutputfield.create(                     tiffconstants.exif_tag_aperture_value,                     outputset.byteorder, new double(db));             tiffoutputdirectory exifdirectory = outputset                     .getorcreateexifdirectory();             // make sure remove old value if present (this method             // not fail if tag not exist).             exifdirectory.removefield(tiffconstants.exif_tag_aperture_value);             exifdirectory.add(aperture);         }          {             // example of how add/update gps info output set.              // new york city             double longitude = -74.0; // 74 degrees w (in degrees east)             double latitude = 40 + 43 / 60.0; // 40 degrees n (in degrees             // north)              outputset.setgpsindegrees(longitude, latitude);         }          // printtagvalue(jpegmetadata, tiffconstants.tiff_tag_date_time);          //os = new fileoutputstream(dst);          new exifrewriter().updateexifmetadatalossless(jpegimagefile, os,                 outputset);          os.close();         os = null;     } {         if (os != null)             try {                 os.close();             } catch (ioexception e) {              }     } } }


Comments

Post a Comment

Popular posts from this blog

angular - Ionic slides - dynamically add slides before and after -

hi i'm using ngfor create set of 3 slides while starting in middle i'm guaranteed able slide left or right on start. when slide right can simple listen reachedend , push slide array i'm looping. but have problem adding slide beginning. if same above , use e.g. array.unshift() or spread add item beginning, view think it's on position 0 , snaps view new slide. the code below work animates slide change index 1. slide = [0,1,2] //example loop slidechanged(event) { if(this.slides.isbeginning()){ this.slide = [this.slide[0]-1, ...this.slide]; this.slides.update(); this.slides.slideto(1) } } <ion-slides [initialslide]="1" (ionslidedidchange)="slidechanged($event)"> <ion-slide *ngfor="let item of slide"> <h1>slide {{item}}</h1> </ion-slide> </ion-slides> any appreciated! you can using ionslidenextend , ionslideprevend events slides . please
Read more

minify - Minimizing css files -

i want know how css files can minimized. currently, using external sites css minifier compress css files. however, after removing whitespaces, comments, etc, file sizes reduced 10-15%. how frameworks bootstrap manage make minimized versions kilobytes. as example, css is: body { background-color: #ff0; } the reduction goes 28 bytes 22 bytes other css files have lot more characters still smaller this. actually minifying code means it's remove thing code white space characters new line characters comments block delimiters it reduces amount of code has transferred on web , speed site load fastly.but unreadable format.
Read more

Add a dynamic header in angular 2 http provider -

i have http interceptor built via tutorial https://scotch.io/@kashyapmukkamala/using-http-interceptor-with-angular2 the problem need have dynamic header changes automatically once changes 'mode' in app. service able tell interceptor change header, or have interceptor pull header (which string)from service each request. able throwing away patch method, call http.patch('new header string') set header string. call in service controls 'mode' setting. wondering if there way interceptor pull recent value service each request or if can add method http provider via interceptor? i've tried call service in interceptor each request returns undefined. because creating new instance of service or copying value before service fired , loaded/changed data. i don't want pass header string every http provider call because defeats purpose of having interceptor, id able set once changes or have provider fetch service before makes request. tl;dr : need add autom
Read more