Android :: Adding New Format To OpenCore
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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Sep 24, 2010
I cannot seem to find an answer to this although I seem to recall that when I first got the phone that I did it once for one word. When in Android Keyboard input, if you type in a word that is not in the dictionary, is there a way to save it so that it comes up again in the future and you don't have to type the whole word out each time you use it? It appears that this is the case in swype (which I do not care for) but after a lot of trial and error, I cannot seem to locate a place where you can do this.
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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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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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Sep 2, 2009
In the android phone, click "settings" and then goto "date & time settings" , user can choose "Use 24-hour format" or not. My question is how to find out this setting through api?
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Jan 12, 2010
This maybe be a simple question but how do you format a double into a dollar format? For example I have a value of 4.2. In a textview I would like to see $4.20. Also what are my options for applying the correct currency symbol?
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Sep 6, 2010
Passing two int values m =0 & s = 11, to below function String formatted = String.format("%1$02d:%2$02d", m, s); returning the value like .0:11 ,What could be the problem? m=0, s=11 -->.0:11 m=0, s=1 --> .0:.1. The 0 added to format the string always coming as '.' (dot). Can anyone know ,from where the number patterns are getting loaded in Android? I gone thorough the code, Its related the following file, androiddalviklibcoreicusrcmainjavacomibmicu4jniutil Resources.java ->localeData.numberPattern. How the pattern for particular locale is loaded, What could be the problem for the above?
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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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May 3, 2010
I want to add a contact just to my phone and not to my gmail account.Whenever I start to add a contact (phone, 208544.menu, +contact, create new contact,) the next thing it forces me to do is to choose an account to create the new contact under and it lists my 3 gmail accounts.I have no option to just put it on the phone.Any ideas here?We do the same thing on the Incredible but it gives us the gmail account and the phone to choose from but not on the Motorola.
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Jun 29, 2010
I am trying to convert string to date, and then I ma saving this date in a file , which saves in the following format:Mon Jun 21 16:31:24 Asia/Karachi 2010.and then when later I read this date from file as a String, I again want to save it to a Date,
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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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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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Jun 3, 2009
What format of picture will I get by using Picture.WriteToStream?
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Nov 20, 2010
I have a date that has the format: "yyyy-MM-dd'T'HH:mm:ss'Z'" I'd like to convert it to something similar to:
"3 minutes ago" How can I go about doing this?
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Jun 13, 2010
Been looking through all the readers & have yet to find one that supports this format.
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Oct 20, 2010
My wifi's broken and I sense it'll be a while before I get it up and running again. Does anyone here know a good website from where I can download applications in the apk format? Coz then I can use the SDK to install them on my phone.
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Apr 10, 2009
Would be more useful than AMR / MP4. Also would be compatible with the very handy source code for RingDroid.
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Sep 14, 2010
I it possible to Convert MP3 to EPUB format ?
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Jan 22, 2010
Does such a thing exist please folks - want to rip some audio for an mp3 ringtone from a comedy video clip
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Dec 27, 2009
Looking the doc with class SurfaceHolder is possible set the kind of surface format. I need to show images YCbCr_420_SP format. If I set YCbCr_420_SP format is not clear after how I can set the data. With Canvas object I can draw only bitmap format and not YCbCr_420_SP. Then my question is : can I draw directly on surface using YCbCr_420_SP data ? how ?
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Sep 23, 2010
I am having a date/time value as 2010-07-26T11:37:52Z , now i wants date in 26-July-2010 (dd-mm-yyyy) format, how do i do it?
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Nov 26, 2009
I am looking at the source code of a Camera Preview application and learning that the preview buffers coming from the sensor is in YUV422 format. However, this preview frame is showed on the display in RGB. Can someone please let me know where the pixel format conversion happens? Is it inside Surface Flinger? If yes, can you please point me to the code?
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