Android :: How Do I Use Android Opencore Codecs Using JNI?
Jul 15, 2010
I want to use the codecs in Android from my application. For now I just want to use the H.264 codec for testing, unless the mp3 or aac codecs provide functions for sending the audio to the device's speaker in which case I would prefer one of those.I have the NDK installed along with Cygwin, GNU Make, and GNU Awk. I can't figure out what I need to do from here though. I'm downloading the entire OpenCORE tree right now but I don't even know how to build it or make Eclipse plugin know it needs to include the files.An example or a tutorial would be much appreciated.EDIT:It looks like I can use JNI like P/Invoke which would mean I don't have to build the OpenCORE libraries myself. However, I can't find any documentation on the names of the libraries I need to load. I'm also confused as to how to do it. I'm looking at http://www.koushikdutta.com/2009/01/jni-in-android-and-foreword-of-why-jni.html and I don't understand what the purpose of writing a library to access a library is. Couldn't you just use something like System.loadLibrary("opencore.so")?
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Sep 3, 2010
Are there DivX codecs for the Dolphin HD browser? I have found some sites where I watch tv shows, megavideo is good but you can only watch so much before you can't watch anymore so I found another that actually has better quality but there files are divx files, I need some codecs like I had to get for my computer. I got Rockplayer but that does not work to stream them.
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Jul 1, 2010
I have copied about ten albums of mp3s onto my HTC Desire but only about one in five of the tracks will actually play. Windows Media Player doesn't have a problem with any of them.
I've tried playing with the default music player and Meridian with the same result. Has anyone seen this?
Is it possible to install more codecs on the Android? Is that even the problem?
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Aug 12, 2009
How can get a list of the codecs for video playback that Android will support?
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Sep 10, 2009
I am working on android for omap zoom2 target. omapkernel - 2.6.27 android - RLS25.6
When try to do Audio play back from Android UI on zoom2 board, WAV & AMR-NB - default PV software codecs are selected and playback is fine. MP3- Hardware codec has been chosen by PV player, player does not come up and playback is not happening.
Enabled PV & OMX logs and collected logs while playing MP3 clip. From logs found that LCML Codec/DSP Bridge Initialization is failing. code...
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Aug 2, 2010
I am trying to integrate VP8 video codec into PV opencore FW in Froyo & test at PV test application level. I have done the following steps, 1. Made a new folder for vp8 @ external/opencore/codecs_v2/omx/ omx_vp8. 2. Made appropriate modifications in the omx_baseclass, omx_common etc. 3. Modified the PV test app (external/opencore/codecs_v2/omx/ omx_testapp) for testing VP8. 4. included the VP8 source code to froyo. 5. Included new oscluuid for VP8 With these modifications, the build is fine. The shared libraries and binaries are creating properly. Also OMX-MasterInit is passing. But the application fails at OMX_GetHandle(). *pHandle is coming as zero. I am using the PV OMX core. I am just adding a new codec which is not supported by PV Opencore and test at PV test_app level.Can you please answer my below queries: 1. Do we need to change the pvplayer.cfg file? Bcoz i am using the PC omx_core itself. 2. Any other changes needs to be done for integrating a new component into Opencore? Please provide you valuable inputs. Let me know if need any additional informations.
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Sep 27, 2009
Anybody know if it is possible use directly OpenCore from java or native with NDK ?
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Mar 22, 2010
Here is what I got while running a test case of open core . *************** # pvplayer_ engine _test -test 1 1 SDK Labeled: PVDEV_ CORE_RELEASE_6.506.4.1 built on 20090312 Test Program for pvPlayer engine class. Input file name 'test.mp4' Test case range 1 to 1 Compressed output Video(No) Audio(No)Log level 8; Log node 0 Log Text 0 Log Mem 0 Starting Test 1: Open-Play-Stop-Reset Results for Test Case 1: Successes 1, Failures 1 Total Execution time for file test.mp4 is : 2.712000 seconds# *************** I want to ask why it shows 1 success and 1 failure . there should be only 1 pass or 1 fail only . Do each test case have multiple sub-tests within them ? which class in source code finally decide whether it is pass or faiL?
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Jul 14, 2009
I am trying to add flash (flv) support to openCORE, i found some hints in this forum but still there are many things that unclear. I would like in the beginning to play local .flv file,from SDCARD, without streaming. As i understand i need to implement Parser within fileformats, "parser node" and "recognizer" and register it with player engine, and of cause add h.263 Sorenson codec. Can someone point me to the information on the data flow from the main Player Engine to the "parser node", what API is used,? How will "parser node" send the data to the Codec Engine? Which parts will i have to add to enable streaming later? I also looked inside the documentation within opencore but did not find relevant information, perhaps i missed something and someone can point me to where should i look.
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May 24, 2010
What are the differences between StageFright and Opencore? What does this mean to app developers? Please point me to any links, tutorials online. You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
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May 12, 2010
Im experiencing an intermittent and very frustrating issue with MediaPlayer on Android when streaming MP3 over HTTP. Ive done as much research and debugging as I possibly can to try and find a solution, but am coming up short. I cant find reference to this issue anywhere, including b.android.com. Essentially, whats happening is MediaPlayer will not come out of the preparing state. The device is receiving audio data during this time, as indicated by network sniffs and the MediaPlayer buffering callback being invoked repeatedly with increasing percentage values, but eventually the buffer appears to become full and stops receiving. Because prepare() never returns, or more accurately when prepareAsync() is used and the onPrepared callback is never invoked, and neither the onError() nor onInfo() callbacks are invoked, the application can neither call MediaPlayer.start() nor make any sort of recovery. Other notable observations: The problem is intermittent, meaning that subsequent attempts to play the exact same MP3 stream from the exact same server may exhibit this behavior or not - The problem seems to be exasperated when the device is connected via 3G versus wifi - The problem occurs on different MP3s encoded by different software - The problem occurs when streaming from different HTTP servers - The problem cannot be reproduced on any of the Android SDK emulators - The problem can be reproduced on the HTC Incredible, Verizon Motorola DROID, and HTC Touch - When MediaPlayer successfully returns from the preparing state, there is an info message (what=1, extra=44) received. This info message is not received during the problematic case. Anyone ever experienced this, or even find a solution?
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Feb 24, 2010
I guess ur doing it correctly.While running the test cases already provided by the PVcore,one can only see the logs and not the output on the screen or the speaker. This is what my experience says.Other people who worked on this can confirm.
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Nov 20, 2009
when a video is played over http (progressive download), in some cases, the application stops the current http connection and continues the download using a new http request with a range header. closing the connection is the phone choice, not server. somebody knows in which cases the phone behaves this way?
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Aug 5, 2009
I am not able to use MediaPlayer/VideoView to make rtsp to work in Android. So I have created a client to interact with RTSP server, I have succeeded in doing this.I am able to get the video/audio frame from RTSP server (MySpace) in Android. Now I want to play the frames. I have searched OpenCore APIs to play the frames, but didn't get any APIs. My investigation: There is a class PlayerDriver.c It creates two sinks one audio and other video. handleSetVideoSurface handleSetAudioSink Two objects of type PVPlayerDataSinkPVMFNode are created. I suspect this class has a way to give the stream as input, but I am not getting the definition of this class. Can you suggest me is there any class I need to look into it?
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Jul 17, 2010
I create aviparsernode folder by coping from MP4 parser node folder under /external/opencore/nodes/. But when I type "make" command under /external/opencore/build_config/opencore_dynamic/. The files under aviparsernode folder are not compilied. Does any one knows how to let OpenCore to make files under aviparsernode folder?
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Jan 29, 2009
What are the video resolutions supported by the PV codes in the opencore module? Is there a manual or guide describing this?
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Jul 1, 2010
I was looking at the Droid X to be my first Android phone and was curious about the supported video codecs. What files are supported and would the files supported on the Droid X be different from the Incredible or is it the same for all Android phones? Are there apps that offer better support?
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Oct 8, 2009
The following what written on the Android 1.6 Platform Highlights: Android 1.6 includes the updated OpenCore 2 media engine, which has: * Support for OpenMAX encoders * Support for additional audio codecs in AuthorEngine * Improved buffering model supports shared buffers allocated in the decoder Could someone explain to me how this affects us the developers? Does this mean now we can play other media types? What in reality is new to us on Android 1.6 in regards to OpenCore?
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Sep 25, 2010
This is 2010. I refuse to believe that you can only play movies/video files that have .avi, .mp4, .mpg, .mkv file formats by converting. I remember Sony was slow on the uptake when they started the media server streaming which I use on a daily basis at home now.Is there a program that will decode the files as you stream them? Any codecs to install on the Droid X? I have thousands of video files and "converting" is time consuming not to mention creating two video files instead of one to play on devices. Converting is BS and whoever thought "Let's just have the users convert the video files" needs to take a long walk off a short pier.
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Feb 26, 2009
I am trying to integrate my codec on the ARM side using my own OMX core. Now I would like to test it on the Android Emulator using the Eclipse and Android SDK. I would like to know, *Tool chain used to compile openCore * How to set up Android Emulator to test my latest openCore (after integrating the Codec)?
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Jun 28, 2010
I have a 720p video that I am trying to play on GS. The image is amazing by the way. But I can't hear any audio (works fine on my PC). Anything wrong with the audio codec used?
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Apr 4, 2010
Does certain media players support different codecs
I'm looking for a media player that supports some kind of lossless.
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Oct 19, 2010
today i meet the problem.i need technic can control the android machine from server.then i want send data from server to android with no request from android.
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Apr 14, 2010
I'm trying to open a dialog window, but every time I try to open it it throws this exception:
CODE:.................
I'm creating it by calling showDialog with the display's id. The onCreateDialog handler logs fine and I can step through it without an issue, but I've attached it since it seems like I'm missing something:
CODE:............
Is there something missing from this? Some questions have talked about having this problem when creating a dialog from onCreate, which happen because the activity isn't created yet, but this is coming from a call from a menu object, and the appContext variable seems like it is correctly populated in the debugger.
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Jun 3, 2010
I'm writing an application which connects to a back office site. The backoffice site contains a whole slew of JavaScript functions, at least 100 times the average site. Unfortunately it does not load them, and causes much of the functionality to not work properly. So I am running a test. I put a page out on my server which loads the FireBugLite javascript text. Its a lot of javascript and perfect to test and see if the Android WebView will load it. The WebView loads nothing, but the browser loads the Firebug Icon. What on earth would make the difference, why can it run in the browser and not in my WebView? Any suggestions.
More background information, in order to get the stinking backoffice application available on a Droid (or any other platform except windows) I needed to trick the bakcoffice application to believe what's accessing the website is Internet Explorer. I do this by modifying the WebView User Agent.Also for this application I've slimmed my landing page, so I could give you the source to offer me aid. package ksc.myKMB;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebSettings;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class myKMB extends Activity {
I already have JavaScript on the web browser on, the problem is the web view is acting to different from the web browser.
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Aug 15, 2010
I want to implement my own Tokenizer base on the file
"MultiAutoCompleteTextView.java",
but I encounter an error "com.android.internal.R cannot be resolved" when I try to
import "MultiAutoCompleteTextView.java" to my project.
code:.................
I haven't research any solutions to resolve this problem.How to correct "com.android.internal.R.attr.autoCompleteTextViewStyle" my own attr?
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Jan 11, 2010
1- Does Android Browser (Éclair code base) support the "plug-in" or not?
2- Why "Google Gears" support is removed from the clair code base?
I searched the forum and came to know that earlier version of the Android does not support it at all? Here is the link for that, but this query asked in Dec'2008.
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Jan 5, 2010
At first,I have a database created by using Ruby on rails.I just already implement insert function(HTTPPost) in my Android Application and it's work.But I don't know how to retrieve specific record from my databases and insert it back to specific record in Android (Like edit function in RoR)This is my insert code :
private void insertComment() {DefaultHttpClient client = new DefaultHttpClient();HttpPost post = new HttpPost("http://10.10.3.87:3000/comments");
// Configure the form parameters
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
nvps.add(new BasicNameValuePair("comment[content]", t_comment.getText().toString();
nvps.add(new BasicNameValuePair("comment[id_account]", "1"));
nvps.add(new BasicNameValuePair("comment[id_place]", Integer.toString(position)I really try many ways out but it doesn't work and it takes very long time to fight with this piece of code. Actually, I really don't know how to specify RowID to HTTPPost.
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Sep 17, 2010
I am doing some android development, and now I need to send some android application generated data onto a remote server (a database)?How can I do that? can I use direct JDBC connection and sql?
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Oct 9, 2010
So i am making a android app, and i want it to be so if i call lets say 911 it sends my GPS coordinents to a certain IP, i know everything but how i make it so if i call 911 it sends the info and how i can make it send the info to the IP via 3g,
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