Dear Ravi, I met a problem when testing video/audio playbak on opencore 2.0, I can't scan out media files that I push into the sdcard, my step as below: 1. adb push test.mp4 sdcard/ (or other audio/video files) 2. reset emulator and run it using "emulator -sdcard sdcard.img" This happen when I change opencore from 1.x to 2.0. In opencore 1.x it can always work and i can find media file in Music or VideoPlayer app, but now i cannot get them. The difference is In opencore 1.x I use Scanner in Dev Tool to scan files,while in 2.0 I have to reset emulator( it seems scan work is done when emulator is set up). I only get a file occasionally. AND, if I want to scan out a new file format(such as .awb or .qcp), what need to be done except modify mediascanner.cpp ? ( only scan out, other work is beyond consideration) Many thanks!
On Apr 15, 10:40 pm, Ravi <yend...@pv.com> wrote: > On Apr 15, 7:11 am, chuan <terr...@gmail.com> wrote:> Dear Ravi: > > Thank so much for your quickly reply, as i am try hard to figure it > > out . > > Now i wish to share my plan and wish get help from you. > > 1. modify mp4 parer src code to support the audio codec(modify > > atomdefs.h sampledescriptionatom.h and some other .cpp). > > 2. modify mp4parser node code ,add audio codec type support. > > 3. use OpenCORE OMX-core to register my new omx component, add > > codec type or registration to omx related file. > > from above steps, i have some question: > > (1) as you know opencore version 1.x has a simpler omx component > > interface, but in 2.0 the interface is more complex, why? it make me > > to wrap the interface > > in cpp file. > > Actually, I don't know this. I am not aware of any change of OMX > component interface. Can you please point me to an example?> (2) and if i > want use my own OMX-core (i'm going to do so), how > > can i do the job as you say? i read the omx intergrate doc, but i > > could not understand it fully. > > Here is a thread where someone was able to do > so.http://groups.google.com/group/android-framework/browse_thread/thread.... > Let us know if you still have questions.> (3) today i try to get the pv > log out to debug ,but failed to do > > so, as you know in version 1.x i can modify two head files and one cpp > > to get the log out, i have try to make with > > ENABLE_PV_LOGGING=1 and even try to modify some log related > > head files, but i got nothing. you know it cost a lot of time, and > > can't use log message to debug make me upset. > > This should still work. Folks here have also been able to get logs > through this method. Let me see if I can patch up something to get the > logs more easily. > > > > > > > looking forward for your reply expecial question(3) , thx! > > > On Apr 15, 4:10 pm, Ravi <yend...@pv.com> wrote: > > > > I don't know enough about QCELP to comment on how and if to modify the > > > mp4 parser. I can try to find out. > > > > In general, the steps to add a new OMX codec would be: > > > (i) Add the required format, if not present, in pvmi/pvmf/include/ > > > pvmf_format_type.h. > > > (ii) Add the mime type in the capability of PVMFOMXAudioDecNode() > > > or PVMFOMXVideoDecNode() [see the constructor]. > > > if you are going to use the OpenCORE OMX-core ... > > > (iii) Register the component in the omx registry - codecs_v2/omx/ > > > omx_common/src/pv_omxregistry.cpp. > > > or > > > if you are going to provide your own OMX-core ... > > > (iii) Have your OMX-core register this new component. > > > (iv) Have your OMX-core dynamically loadable. > > > > Not sure about your build failures. Can you post snippets of > > > failures? > > > > On Apr 14, 11:27 pm, chuan <terr...@gmail.com> wrote: > > > > > Dear Ravi: > > > > question 1: > > > > if i want intergrate other audio codec in opencore 2.0 such as > > > > qcelp in 3gp/3g2 file, how can i modify mp4 parser to let it work? > > > > this audio codec omx components are perpared, new codec types are > > > > already define in pvmi\pvmf\include\pvmf_format_type.h, any where i > > > > can add this codec is added > > > > if you have any sugestion , pls let me knew > > > > question2: > > > > to enable looger i use cmd below > > > > rm -rf out/target/product/generic/obj/include/libpv > > > > make -j ENABLE_PV_LOGGING=1 > > > > > but i find it cannot compile through, a lot of killed appears, why? > > > > > looking farward for your kindly reply. > > > > > On Feb 27, 10:27 pm, rktb <yend...@pv.com> wrote: > > > > > > It should be a new format in the existing container. Go through the > > > > > existing mp4 parser and try to understand how it is structured. We can > > > > > help you with specific questions. > > > > > > Btw, I am assuming that you would be contributing this work back to > > > > > OHA community. > > > > > > -Ravi > > > > > > On Feb 27, 1:21 am, Lucien <loisen0...@gmail.com> wrote: > > > > > > > Hi, > > > > > > Is there any documents,hints,or suggestions for me if I want > > > > > > to implement mp3 codec in mp4 ? > > > > > > How to start this work ? > > > > > > And is the effort hugeous ? > > > > > > In addition, does PV have plan or roadmap to support this > > > > > > functionality > > > > > > Thanks for your response > > > > > > > On 2月24日, 下午9時13分, rktb <yend...@pv.com> wrote: > > > > > > > > Hi, > > > > > > > > There is no special concern in supporting mp3 in mp4. It has not > > > > > > > been > > > > > > > done yet. OpenCORE currently supports 3gpp fileformats in it's mp4 > > > > > > > parser. > > > > > > > > -Ravi > > > > > > > > On Feb 23, 7:10 am, Andy Quan <androidr...@gmail.com> wrote: > > > > > > > > > Ravi, > > > > > > > > Is there any special concern about not supporting MP3 in MP4 > > > > > > > > format? I mean > > > > > > > > whether there are any legal issues or is this simply a > > > > > > > > technical issue? It > > > > > > > > seems MP3 held by MP4 is not a corner case. > > > > > > > > > On Sat, Feb 14, 2009 at 12:15 AM, rktb <yend...@pv.com> wrote: > > > > > > > > > > On Feb 13, 4:34 am, Lucien <loisen0...@gmail.com> wrote: > > > > > > > > > > Dear all : > > > > > > > > > > > I have some problems to consult > > > > > > > > > > > First, > > > > > > > > > > Can music player list a music file with amr-wb > > > > > > > > > > codec in 3gp > > > > > > > > > > file > > > > > > > > > > format ? > > > > > > > > > > I have tried to push a test file(only audio with > > > > > > > > > > amr-wb codec > > > > > > > > > > in 3gp) into > > > > > > > > > > sdcard , but music player list didn't show it > > > > > > > > > > In addition , when I used browser to connect a web > > > > > > > > > > server, I > > > > > > > > > > can download > > > > > > > > > > the test file but still can't play it > > > > > > > > > > Moreover, if the video part of the test file(.3gp) > > > > > > > > > > is encoded > > > > > > > > > > with h.263 and > > > > > > > > > > audio encoded with amr-wb codec, the media player > > > > > > > > > > can display > > > > > > > > > > without audio > > > > > > > > > > output. > > > > > > > > > > What is the problem of this issue ? > > > > > > > > > > I tried playing 3gp files with amr-wb encoded data. It works > > > > > > > > > for me. > > > > > > > > > You need to file a bug with your specific clip so that > > > > > > > > > somebody can > > > > > > > > > take a look at it. > > > > > > > > > > > Second problem, > > > > > > > > > > Can music player play a music file encoded with mp3 > > > > > > > > > > codec in > > > > > > > > > > mp4 file > > > > > > > > > > format ? > > > > > > > > > > OpenCORE currently doesn't support mp3 codec in a mp4 > > > > > > > > > container. > > > > > > > > > > > At last, opencore 2.0 have been released. > > > > > > > > > > Are those two issues supported? > > > > > > > > > > > Thanks!! > > > > > > > > > > > Best regards, > > > > > > > > > > Lucien > > > > > > > > > -- > > > > > > > > Thanks, > > > > > > > > Andy- 隱藏被引用文字 - > > > > > > > > - 顯示被引用文字 -- Hide quoted text - > > > > > > - Show quoted text -- Hide quoted text - > > > > - Show quoted text -- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "android-framework" group. 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