Android :: Jpeg From Binary?
Jun 14, 2010Does Android have a native library that can make a jpeg from binary data from say, a json object?
View 4 RepliesDoes Android have a native library that can make a jpeg from binary data from say, a json object?
View 4 RepliesMy app will have an SQLite database with some embedded JPEG images -- basically the binary contents of a JPEG file stored as a Blob in the database. Can someone point me in the general direction of where to start to figure out how to convert this "array of bytes" into a Bitmap object that can be further manipulated and displayed in an ImageView?
View 2 Replies View Related1.myJpegFile = new File("images/jpegImage.jpg");
2.output = new BufferedOutputStream(new FileOutputStream(myJpegFile));
3.encoder = JPEGCodec.createJPEGEncoder(output);
4.encoder.encode(myJpegImage); Please could you give me the equivalent code for line no. 3 and 4 in Android?
I am confused on how to implement image processing algorithm on JPEG data.I have set P.setpicturesize (640,480) so the camera.takepicture (null,null,Imagecapture callbck) returns the image data. Void onPictureTaken(byte[] data, Camera Camera) returns JPEG data, but(x = data.length), the value of x is less than 640*480 bytes.Please kindly let me know how can I start editing pixel information of the image and image comparison algorithms.
View 2 Replies View RelatedAnybody is having the knowledge on porting of our own codec with replacing the Android one.
View 2 Replies View RelatedI manage a project where users upload JPEG images for processing. Generally the images are taken with Nikon cameras, but recently one user took images with a Droid and the client software did not recognize the Droid JPEG images for upload. The client software developer said it's because they read images written in the standard JPEG file interchange format (JFIF), and Droid JPEGs are not in this format. Why, and can this be corrected?
View 3 Replies View RelatedI am developing an app in which i need the image in TIFF format.But in android u can convert your bitmap/image to only JPEG/png image. is there a way to convert JPEG/png file to TIFF format or is there any jar available to do so.
View 2 Replies View RelatedI am trying to save a bitmap in a JPEG format, and i can see that the image is always stored with a lower quality even if i give the compression level as 100, however for PNG it is working fine. Similarly during Media.insert() or getContentResolver().insert() the image is stored with a lesser quality, I can see in that the compression level is 50 in the Media.java, however I tried to create my own method for the same function with quality 100.
View 3 Replies View RelatedI would like to save a preview frame as a jpeg image.
I have tried to write the following code...
but it's not possible to open a saved file as a jpeg image. Does anyone know how to save preview frames as jpeg images?
I would appreciate to hear from you what would be the available options in Android to perform a lossless jpeg rotation of a jpeg image -> Rearranging the image data from landscape to portrait by rotation without ever fully decoding the image. My problem is that my device's camera always take the images in landscape mode and sometimes I would need to rotate the image to portrait to be used in my application. This takes time and memory if I need to do it in the standard way (decode the image, apply rotation operation to the pixels and encode again). Doing it without decoding the image would bring a significant improvement in performance. I have seen that in Android platform (Cupcake) jpegtran.c (which performs this operation beautifully) is available under /external/jpeg but this functionality is not available (a.f.a.k) on the application framework. How can I use this function? I guess I need to use JNI to be able to access this functionality, right? Other ways? Could you give me any hint on how I could do this or if there is another easier and quicker way to do it?
View 2 Replies View RelatedCan I have sub-folders to hold my drawable resources. For example can I store an image in, say, 'res/drawable/content/images/myimage.jpg' and then find that resource via a call to:
id = context.getResources().getIdentifier("com.mycompany.myprog:drawable/ content/images/myimage", null, null);
I have tried this and it doesn't seem to be working (but I may have something wrong). Is it supposed to work or do all the resources need to be in the root drawable folder? Also, are jpeg files supported and drawable resources?
How can I convert from NV21 to JPEG. Currently, NV21 is the only previewFormat that is supported by the camera on a Nexus One (running Android 2.2).
View 2 Replies View RelatedAndroid does not provide an Exif Reader or Exif Writer in its SDK (it has a native implemenation, though, but that API is private).
The Sanselan library, however, does provide a full fledged set of functionality for reading and writing Exif metadata.
However, Sanselan pur sang cannot be included in an Android Project. It references classes and packages that do not exist under the current version of Android (e.g. ImageIO).
Therefore, I made a quick cut of Sanselan 0.97, cutting out all the classes that prevent it from being used on the Android platform. It is a quick cut and it may have some issues. However, I got its exif reading and writing to work for my application and it looks like its working quite well. Reading and writing raw image-data is, however, not possible in this cut. This has been cut out.
Is there a way to directly access a Jpeg's file metadata, without having to go through the ImageManager services?
View 4 Replies View RelatedI managed to handle a full size image (2048x1536) (moving around, zooming, some colorfilters, etc). However, i can only load these images in memory as RGB_565, one at a time. I try to free as much bitmap memory as possible (by recycling every possible bitmap cached/ open in my app), and then load the full-sized image in RGB_565 format. This works well.
The user can make some modifications (color balance, brightness, etc) and I like to save the resulting image in a JPEG file. However, on screen, all edits are shown in RGB_565. You can see the posterization because of the reduced pixel-depth. The quality degradation on the screen is a minor problem. My main problem is to apply these edits to the actual and higher quality ARGB_8888 data of the original JPEG file.
Trying to load a ARGB_8888 JPEG file with size 2048x1536 is not possible. I get an out-of-memory error. Is there any way to apply color-filters to ARGB_8888 data (instead of RGB_565) so that i won't lose a lot of image-quality when trying to save modifications into a JPEG file?
I took a photo directly in contacts but I really like to get hold of that picture as a JPEG. Does anyone know where its stored?
View 2 Replies View RelatedI am writing a code for an android app in which I have to captures image and save it into internal storage of android. For this I have written the following code-
Code:
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
String newPath = PATH+"/"+folderName+"/"+imageName+".jpg";
File file = new File( newPath );
file.mkdirs();
[Code]...
This code creates jpeg file but don't write the image into it.
Later I tried writing following code in onActivityResult-
Code:
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
Bitmap bitmap = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0, bos);
byte[] bitmapdata = bos.toByteArray();
[Code]...
But its still not working.
Every time I get a jpeg message that has sound I have to open the picture and the sound separately and that takes away from the whole "funny" experience. Then what's the point in that.
View 2 Replies View RelatedIs there an app to open files in yahoo and gmail?
View 4 Replies View RelatedI know there are many apps out there to change icons but I am wondering if it is possible to change the .JPEG in the root of the phone and where the original is located, I have not been able to find anything on this. PG86100
View 1 Replies View RelatedI have a JPEG sketch of my apartment. i wish to write android app which loads this JPEG file and behaves as a map to the user so that user can track is movement. I am really confused weather JPEG file can be used as a map, if it can used as a map then please let me know how i can mark the movement of the user on that map.
View 6 Replies View RelatedI am new to android and I want to read a binary file extension .AMF file.I really need your help this is really urgent.
View 1 Replies View RelatedCan anybody please tell me how to get double and int value from a binary file. I have tried alot but its giving me wrong values.
View 2 Replies View RelatedI am having problems downloading a binary file (video) in my app from the internet. In Quicktime, If I download it directly it works fine but through my app somehow it get's messed up (even though they look exactly the same in a text editor).
View 4 Replies View RelatedIs there any way that i can add many words into main.dict currently used as Main Dictionary in Inputmethods package?? Please reply it's bit urgent.
View 3 Replies View RelatedI met a big difficiult problem, i have researched more then 5 day's. Of course i read the LatinIME's algorithm for the suggestion.
View 4 Replies View RelatedI have some binary data (pixel values) in a int[] (or a byte[] if you prefer) that I want to write to disk in an Android app. I only want to use a small amount of processing time but want as much compression as I can for this. What are my options?In many cases the array will contain lots of consecutive zeros so something simple and fast like RLE compression would probably work well. I can't see any Android API functions for this though. If I have to loop over the array in Java, this will be very slow as there is no JIT on most Android devices. I could use the NDK but I'd rather avoid this if I can.
View 4 Replies View RelatedAndroid ndk is hard to use for the old autoconf based code, so i employed scratchbox2/emdebian to have a complete build environment. can i build a shared library in emdebian (arch is armel) and then use it in android?
View 2 Replies View RelatedAndroid supports a limited version of apache's http client(v4). typically if I want to send binary data using content type= application/octet-stream via POST,
I do the following:
CODE:.........................
However ByteArrayRequestEntity is not supported on android. what can I do?
Is it possible to receive a binary SMS on a specific port?
I am currently receiving SMS via Action: "android.provider.Telephony.SMS_RECEIVED" from a BroadcastReceiver.
But i have no luck with binary SMS. I only get notified for text messages.