I'm still feeling directionless when it comes to what MediaRecorder.setOutputFile(String path) is expecting. Is it a relative path? Is it a fully qualified path? Must the directory we are recording in already exist, or will MediaRecorder create it for us if it does not exist? What happens if we specify a file path which already exists - will it override the existing file or will it bomb out?
On Mar 7, 10:30 pm, benmccann <benjamin.j.mcc...@gmail.com> wrote: > jdl, I'd be happy to post my code, but I still don't have a working > example. I upgraded to the 1.1 SDK today in hopes that it fixed a bug > and things would work for me, but it seems the media APIs are still > hopelessly broken. All I ever get is the meaningless message "start > failed". It looks like perhaps the cause is a buffer overflow in the > native code: > > 03-07 21:19:42.059: DEBUG/AudioHardware(25): AudioStreamInGeneric::set > (0xac50, 7, 1, 1, 8000) > 03-07 21:19:42.069: DEBUG/AudioHardware(25): AudioStreamInGeneric::read > (0x40308020, 320) from fd 7 > 03-07 21:19:42.078: DEBUG/AudioHardware(25): AudioStreamInGeneric::read > (0x40308160, 320) from fd 7 > 03-07 21:19:42.078: DEBUG/AudioHardware(25): AudioStreamInGeneric::read > (0x403082a0, 320) from fd 7 > 03-07 21:19:42.078: DEBUG/AudioHardware(25): AudioStreamInGeneric::read > (0x403083e0, 320) from fd 7 > 03-07 21:19:42.088: WARN/AudioFlinger(25): AudioRecordThread: buffer > overflow > 03-07 21:19:42.098: DEBUG/AndroidRuntime(185): Shutting down VM > 03-07 21:19:42.098: WARN/dalvikvm(185): threadid=3: thread exiting > with uncaught exception (group=0x4000fe68) > 03-07 21:19:42.098: ERROR/AndroidRuntime(185): Uncaught handler: > thread main exiting due to uncaught exception > 03-07 21:19:42.128: DEBUG/AudioHardware(25): AudioStreamInGeneric::read > (0x40308020, 320) from fd 7 > 03-07 21:19:42.128: DEBUG/AudioHardware(25): AudioStreamInGeneric::read > (0x40308160, 320) from fd 7 > 03-07 21:19:42.128: ERROR/AndroidRuntime(185): > java.lang.RuntimeException: start failed. > 03-07 21:19:42.128: ERROR/AndroidRuntime(185): at > android.media.MediaRecorder.start(Native Method) > 03-07 21:19:42.128: ERROR/AndroidRuntime(185): at > com.benmccann.android.hello.AudioRecorder.start(AudioRecorder.java:59) > 03-07 21:19:42.128: ERROR/AndroidRuntime(185): at > com.benmccann.android.hello.HelloAndroid$1.onClick(HelloAndroid.java: > 31) > > On Mar 6, 1:38 pm, benmccann <benjamin.j.mcc...@gmail.com> wrote: > > > Bugs already > > exist:http://code.google.com/p/android/issues/detail?id=450&q=media%20docum...... > > > On Mar 5, 9:23 pm, Dave Sparks <davidspa...@android.com> wrote: > > > > Log a bug athttp://b.android.com. > > > > On Mar 5, 2:17 pm, jdl <j...@edufone.com> wrote: > > > > > Diane or Dave, > > > > > How do we go about requesting that someone from the Android project > > > > update the Audio/Video > > > > tutorial,http://developer.android.com/guide/topics/media/index.html, > > > > so that it works with the current version of the API? > > > > > Thanks, > > > > AN > > > > > On Feb 28, 2:45 pm, Dianne Hackborn <hack...@android.com> wrote: > > > > > > You use Context to get at your private data files: > > > > > >http://developer.android.com/guide/topics/data/data-storage.html > > > > > >http://developer.android.com/reference/android/content/Context.html#g...) > > > > > > On Thu, Feb 26, 2009 at 2:40 PM, benmccann > > > > > <benjamin.j.mcc...@gmail.com>wrote: > > > > > > > >> each application has its own private data directory / > > > > > > >> data/app-private/app-package. I believe your working directory > > > > > > >> is set > > > > > > >> to this directory by default > > > > > > > Cool. So it sounds like I should just be able to use a relative > > > > > > path > > > > > > from the current location then. Unfortunately, I'm getting the > > > > > > following exception (with no clues as to why start is failing): > > > > > > > 02-26 14:34:55.132: ERROR/AndroidRuntime(164): > > > > > > java.lang.RuntimeException: start failed. > > > > > > 02-26 14:34:55.132: ERROR/AndroidRuntime(164): at > > > > > > android.media.MediaRecorder.start(Native Method) > > > > > > > Here's my code: > > > > > > > final MediaRecorder recorder = new MediaRecorder(); > > > > > > recorder.setAudioSource(MediaRecorder.AudioSource.MIC); > > > > > > recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); > > > > > > recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); > > > > > > recorder.setOutputFile("test.3gpp"); > > > > > > recorder.prepare(); > > > > > > recorder.start(); > > > > > > > On Feb 26, 12:14 am, Dave Sparks <davidspa...@android.com> wrote: > > > > > > > You can get the path to external storage (e.g. SD card) with > > > > > > > Environment.getExternalStorageDirectory(). This is world read/ > > > > > > > writable. > > > > > > > > Alternatively, each application has its own private data > > > > > > > directory / > > > > > > > data/app-private/app-package. I believe your working directory is > > > > > > > set > > > > > > > to this directory by default. This is onboard flash, so it will > > > > > > > survive the user ejecting an SD card. However, there is a limited > > > > > > > amount to go around, so you don't want to store monster media > > > > > > > files > > > > > > > there. > > > > > > > > On Feb 25, 9:22 pm, benmccann <benjamin.j.mcc...@gmail.com> wrote: > > > > > > > > > >> setOutputFile() expects a path to where you want the file > > > > > > > > >> stored. > > > > > > > > > Yep, figured that much by the method name, but what's a valid > > > > > > > > path? I > > > > > > > > mean I'm figuring it's UNIX-like, but other than that I'm in the > > > > > > > > dark. Is there a preferred place for apps to store data? Are > > > > > > > > there > > > > > > > > certain directories that I have permission to write to? What > > > > > > > > directories exist on the device by default? It'd be nice for > > > > > > > > the docs > > > > > > > > on data storage to mention any of these things: > > > > > >http://developer.android.com/guide/topics/data/data-storage.html > > > > > > > > > >> You can take a look at the source to SoundRecorder in the > > > > > > > > >> open > > > > > > source tree for some working code > > > > > > > > > Thanks for the example. This would be a much better example > > > > > > > > than the > > > > > > > > one in the docs that won't compile and implies content must > > > > > > > > first be > > > > > > > > added to a database: > > > > > >http://developer.android.com/guide/topics/media/index.html > > > > > > > > > On Feb 24, 8:03 pm, Dave Sparks <davidspa...@android.com> wrote: > > > > > > > > > > setOutputFile() expects a path to where you want the file > > > > > > > > > stored. > > > > > > > > > > You can take a look at the source to SoundRecorder in the > > > > > > > > > open source > > > > > > > > > tree for some working code: > > > > > > >http://android.git.kernel.org/?p=platform/packages/apps/SoundRecorder... > > > > > > > > > > On Feb 24, 4:43 pm, benmccann <benjamin.j.mcc...@gmail.com> > > > > > > > > > wrote: > > > > > > > > > > > Hi, > > > > > > > > > > I'd like to create anaudiorecordingin Android. (Actually, > > > > > > > > > > I just > > > > > > > > > > want access to the mic withoutrecordingit, but it seems > > > > > > > > > > that's not > > > > > > > > > > supported so I'll have to create arecordingand tail the > > > > > > > > > > file). > > > > > > > > > > I'm having a very hard time getting started. Mostly I'm > > > > > > > > > > just > > > > > > hoping > > > > > > > > > > that someone from Google reads this and will update the > > > > > > documentation > > > > > > > > > > because the example won't compile - it looks like it's from > > > > > > > > > > some > > > > > > > > > > previous version of the SDK because there's an error in > > > > > > > > > > every other > > > > > > > > > > line. I made my best guess as to what the usage should be, > > > > > > > > > > but I > > > > > > keep > > > > > > > > > > getting a number of different exceptions. > > > > > > > > > > One question I had is whether I can just specify an > > > > > > > > > > arbitrary path > > > > > > to > > > > > > > > > > the MediaRecorder to startrecordingor whether I have to > > > > > > > > > > create an > > > > > > > > > > entry in the content database. The JavaDoc for > > > > > > > > > > MediaRecorder.setOutputFile isn't clear on what it's > > > > > > > > > > expecting. > > > > > > > > > > > Thanks, > > > > > > > > > > Ben > > > > > > -- > > > > > Dianne Hackborn > > > > > Android framework engineer > > > > > hack...@android.com > > > > > > Note: please don't send private questions to me, as I don't have time > > > > > to > > > > > provide private support. All such questions should be posted on > > > > > public > > > > > forums, where I and others can see and answer them. --~--~---------~--~----~------------~-------~--~----~ 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-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
