Android :: Pure Java Video Endcoding/decoding Libraries

Nov 18, 2010

Does anyone know of any video encoding/decoding libraries written entirely in java? Bonus points if it works on Android. I'm trying to write a video decoding application for android, where I have access to the frame level decoding functions (which is absent in the android API MediaPlayer class)

Android :: Pure java video endcoding/decoding libraries


Android :: RTP Stream Video Decoding

May 24, 2010

Currently I am developing an application that will stream video using RTP and SIP. I have this mostly working with audio working fine both ways using Java (and native) codecs. I can stream out video also from the camera to a windows client.

The problem comes from when I want to receive and decode the video on the android platform. I understand at this stage that Mediaplayer only supports RTSP streams. Ironically it does what I need (by getting the SDP information from using RTSP SETUP call and using that RTP/UDP information to receive the stream). But I can't seem to access this functionality, all it takes as input is a RTSP url. If you are unfamiliar the difference between RTSP using RTP and SIP using RTP. You can read about the differences here<http://www.cs.columbia.edu/~hgs/rtsp/faq.html#rtsp_sip> .

What I need to do is take an RTP stream encoded with h.263-1998 and somehow pass it to the mediaplayer (or even a lower level api if somebody can provide an example).

The only way I can think around this is to write another service to receive the RTP stream and provide an RTSP interface... but this is a really ugly solution.

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General :: How To Use H/W Accelerated Video Decoding In Coding

Jul 7, 2012

Ways to implement H/W acceleration for video decoding(eg. H.264) in my own app for a long time, but got no clue.

I want to call H/W decoding based on NAL or frame level over raw bitstream, rather than setting up a media player for files.

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Android :: Add Core Java Libraries

Dec 26, 2009

I have to add java libraries javax.xml to the my android project, while I am trying to add them it shows the error "Conversion to Dalvik format failed with error ".

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Android :: Work Around Missing Java Libraries

Nov 24, 2009

I'm attempting to port a normal Java program over to Android, however I am having a problem with a huge number of missing Java packages (e.g., Android Java does not have java.lang.management). Is there a way for me to work around this, such as by adding the Java modules that I need?

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Porting From Java Using Swing And AWT Libraries Into Android

Nov 8, 2012

I currently have an application using the libraries swing, swing.table, and awt on a java applet that I have running. I want to know what are the steps to get the application running as a native android app. I heard that I could use programs like Phonegap to just release a web based app for multiple platforms, but I am new to Android Programming (so far I just made a Hello Android app). I searched swing and awt, but I could not find any useful info.

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Android :: Simple Shape Recognition Libraries For Java

Mar 16, 2010

I am working on a on-screen keyboard for Android, and I need to recognize starting points, turning points and end points of lines drawn by the user on the keyboard. A simple straightening function would be nice, as it is difficult to draw a perfectly straight line even with a stylus, not to mention finger-only touchscreens today.What I am trying to write is something like Swype. Any good libraries that I can use or make reference to?

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Android :: Develop Using Libraries In Simple Java Project - Without Using Dalvik And Such

Oct 9, 2010

As I am very pissed off of using the emulator to develop any Java class, I thought of setting up a project in Eclipse and instead of the usual JRE I linked to the Android.jar (version 2.1) that usually the Android projects link to. I don't mean to use this to develop Layouts or other specific platform things, I was just trying to create a class that uses HttpClient.

It miserably crashes like this.

CODE:.............

I mean I'd like to develop libraries (and test them) so that when I go to the emulator I don't have to deal with them. Is there a good way to do this? This seems not to work for some reason.

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Android :: Java Validators Libraries To Validate Text Input From Droid App?

Sep 30, 2010

Is there any Java validator libraries i can use to validate text input from an android app?

i know that in spring there are validators for various different types such as checking if a value is a int, if a value is a valid email, etc etc.

Anything similar in core Java or even android?

cheers in advance. i don't want to re-invent the wheel if its already been implemented. i could always sue Java reg expressions to construct my own ones but was wondering if their was one done specifically for email formats.

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Android :: Which Java Libraries Are Not Included In Android?

Jul 1, 2010

Hi Android Developers, "Android includes a set of libraries which provide MOST of the functionality of the Java libraries". Does anyone know what is ment by MOST and which libraries are NOT supported compare the the JVM?

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Android :: MIDI On Android: Java And AIR Libraries

May 26, 2010

I've been contemplating (re)building an app on iPad for some time, where I would use objective-C and DSMI to send MIDI signals to a host computer. This is not bad (I mean, except for actually writing the app).Now I'm contemplating perhaps developing the app for Android tablets (TBA).In Java, what options are available for MIDI message communication? I'm quite familiar with javax.sound.midi, but then I would need a virtual MIDI port to send messages to the host.On the other hand, if the app were done in Adobe AIR, what options would I have available for communicating with MIDI?Obviously another option is to send/receive messages over a TCP/IP socket to a Java host, and talk that way, but it sounds a tad cumbersome... or perhaps not? DSMI does use a host program, after all.

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Android :: Decoding High Resolution Pics

May 5, 2009

I want to decode high resolution pics something like 8 mega pixel images and view it. when I try to decode them I get out of memory exception. Decoding of single 8 mega pixel also fails . From the Imagamanager code and other post I could use BitmapFactory.Options inJustDecodeBounds I could get a scaled down version of the Image......................

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Android :: Threaded BitmapFactory Image Decoding

Oct 15, 2010

Our Android app does a lot of image decoding. We fetch a lot of images from the internet, local storage caches, etc. Up to now, these images are being decoded on the UI thread (using BitmapFactory.decodeX() methods). It's been causing some timeout crashes because the UI doesn't respond quickly enough to user input.

I could write a little AsyncTask that encapsulates decoding, but I'm not sure that's a good idea. Spawning threads is expensive, and that would be spawning and tearing down a ton of them. So what's the best way to put this on another thread? Do I need to go to the extent of writing a Service? That seems a little heavy-weight. Are there any solutions for this already out there?

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Android :: Lossless Rotation Of A Jpeg Image Without Fully Decoding

Aug 23, 2009

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?

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Android : Does Phone Support Video Rotation - Specially In Java Layer

Oct 23, 2009

Is there any way we can rotate a video in Android (specially in Java layer) as it supports ino BREW or WM?

Also, how does the orientation change (portrait/landscape) is different than the video rotation?

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Motorola Droid :: Java Applet Not Loading / What To See Video?

Dec 2, 2009

So I have trying to access this website

JavaCamperCam

But it does not stream the video. When I click zoom it states the Java Applet is downloading but nothing ever happens are the video is never displayed.

What do I have to do to see the video? Or is it not even possible to view?

I am using the moto droid.

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Android :: Decoding Encoded Audio Data On Android Without Playing It

Feb 25, 2010

Short version: What is the best way to get data encoded in an MP3 (and ideally in an AAC/Ogg/WMA) into a Java array or ByteBuffer that I can then manipulate?I'm putting together a program that has slowing down and speeding up sound files as one of its features. This works fine for WAV files,which are a header plus the exact binary data that needs to be sent to the speaker, and now I need to implement it for MP3 (ideally, this would also support AAC, Ogg, and WMA, but since those are less popular formats this is not required). Android does not expose an interface to decode the MP3 without playing it, so I need to create that
interface.

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Media :: Transfer Instant Video Streaming To Computer Using Java

Mar 16, 2010

I want to transfer my instant video streaming from my android phone to my computer using java. I have to watch it on my computer as instantly.

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Android :: How To Get Current Pure UTC Time?

Aug 25, 2010

I need to get pure UTC time in application level. It should not be changed by user or location or anything else. When I try with System.currentTimeMillis() or getTime() of Date class, they always return value of local time. If user change date or time, the return value is also changed. I found handleEndOfInit method in android_modem.c (externalqemu elephony) and the method is like below. Probably, the variable "utc" is what I want.

1. Is the android_modem.c for emulator?? 2. If it is, I think there must be similar file for target. Where is it? 3. How can I get the "utc" value in my application?................

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Android :: Pure Calendar Widget

Mar 9, 2010

I am the Pure calendar developer.Pure calendar widget can show on your home screen all your Google calendar informations and even tasks from Astrid or gTasks.From the widget, you can open official applications (Google calendar, Moto Corporate calendar, Astrid, gTasks), add events or tasks.You have a lot of widget sizes available from 2x2 to 4x4.It is fully skinnable to fit your Home screen design.

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Android :: How I Can Get My Pure Calendar Widget?

Feb 11, 2010

I was wondering how I can get my Pure Calendar Widget.

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Android :: Pure Calendar Confusion

Jan 27, 2010

I'm new to the forums. I just got my Droid in the mail today. I bought the Pure Calendar Grid widget, however I'm having problems figuring it out. Every time I click on a date it brings up the settings. Is there not a way to make it pop up with the details from that day?

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Android :: Pure Messenger Widget

Jan 28, 2010

I am the dev behind this appplication (and others such as Pure calendar or Pure grid calendar).I'd like to concentrate here all informations about my widget.

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Android :: Pure Music Widget

Jan 31, 2010

This widget will be skinnable, and display album covers.It will be free during beta dev (~2 weeks), and 0.49 after.It is not yet released on the market.This is a very early stage.I'll publish beta version here in few hours.It can only interact with ROM stock media player (if you are using android 2.1 music player on an Android 2.0.1, it will interact with the 2.0.1).ID3 tags supported up to v2.3 (android limitation)Do not ask for swipe, it is not possible with current Android SDK.

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Android :: Pure Calendar Widget & Reqall

Mar 15, 2010

I just noticed that Reqall is a calendar option within Pure Calendar Widget. Anyone know how this works? I'm a user of Reqall and have been waiting patiently for them to develop an Android application.

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Nexus :: Android 2.2 Doesn't Work With Pure Calendar?

May 22, 2010

I've just updated to 2.2 and noticed my calendar widget for pure calendar won't update. It force closes when I try to open the google calendar by tapping on the widget. Does anyone know a fix or an alternate calendar that will work?

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Android :: Voice Recognition And Voice Decoding

Jan 11, 2010

How is it possible to implement voice recognition on android phones? Also to decode the voice and convert the male voice to female voice and vice versa?The voice data input from the user will be sent to the Google site for recognition through Internet, or will be processed and recognized locally on my android phone? if anyone has any idea regarding it.

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Android :: Pure Calendar Widget Updates Instantly Despite Update Frequency

May 3, 2010

I started using Pure Calendar today and love it.here is a "Select Update Frequency" setting that can change from 6 hours to "When Calendar is Modified."I left mine on 6 hours to begin with, but I have noticed that when I modify my Exchange or my Google Calendar (on my phone OR on my computer), the Pure Calendar widget updates almost instantly.Anybody know why? Is it a bug in the Widget? Or is it supposed to update the Widget instantly despite being set to 6 hours?

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Android :: Entering Mobile Development - Pure IPhone SDK - Mono Touch Or Titanium

Apr 16, 2010

I am entering mobile development. I have been working primarily in .NET since 1.0 came out in beta. Before that, I was mostly a C++ and Delphi guy and still dabble in C++ from time to time. I do web apps quite a bit so I am reasonably proficient with Javascript, JQuery and CSS. I have also done a few Java applications. I started web programming with CGI and live mostly in the ASP.NET MVC world these days.

I am trying to decide on which platform/OS and tool to select. I am concerned with the size of the market available for my applications as well as the marketibility of the skills I will pick up.

The apps I have in mind would work on both phones and pads. Some aspects of what I have in mind will play better on the bigger screens that will be available on pads.

Here are the options I am considering:

Apple iPhone/iPad using pure Apple SDK (Objective-C)
Apple iPhone/iPad using Mono Touch (C#)
Android using pure Android SDK (Java)
Multiple platforms using something like Titanium to generate native apps from web technologies (HTML, CSS and Javascript)
Multiple platforms using HTML5 web applications that run in the browser (HTML, CSS and Javascript).

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Samsung Captivate :: Pure Black Background?

Jul 28, 2010

Is there such a thing as a pure black background to help save battery life? Something like the menu black background. It's not an option when choosing a wallpaper.I've been searching around android market and have found nothing.If we make the image on our computer, would a black square work fine?

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