Windows Media is not supported in the emulator due to licensing
issues. The T-Mobile G1 supports WMA/WMV because that device is
specifically licensed to use the Microsoft codecs.
On Nov 14, 4:15 am, Gery <[EMAIL PROTECTED]> wrote:
> Hi David,
>
> Regarding this mediaplayer access right thing, may you help take a
> look at my issue?
>
> I am writing an application which uses MediaPlayer to play video, but
> I always encountered this issue:
> java.io.IOException: Prepare failed.: status=0xFFFFFFFC
>
> 1. I tried to put the wmv file on sdcard or application folder, and
> both are with same results.
> 2. I tried with the system's ringtone, e.g. /system/media/audio/
> ringtones/BirdLoop.ogg, it can play the music.
> 3. i am using Android Debug Bridge version 1.0.20 on WinXP, with an
> emulator
>
> the code is here:
> File file = new File(filename);
> FileInputStream ins = new FileInputStream(file);
> mMediaPlayer.setDataSource(ins.getFD());
> mMediaPlayer.setDisplay(holder);
> mMediaPlayer.prepare();
>
> It always throws an IOException in the "prepare()" method. If I
> replace the file with that system's ringtone file, everything is ok.
>
> Any suggestion? Really appreciate it.
>
> Gery
>
> On 11月14日, 下午4时20分, "[EMAIL PROTECTED]"
>
> <[EMAIL PROTECTED]> wrote:
> > Due to the Android security model, MediaPlayer does not have root
> > access rights. It can access the sdcard, but it can't access private
> > app directories.
>
> > Your app can explicitly grant MediaPlayer temporary access to secure
> > files by opening the file and passing the file descriptor to
> > MediaPlayer using the setDataSource(FileDescriptor fd) method.
>
> > On Nov 4, 10:36 pm, pa018 <[EMAIL PROTECTED]> wrote:
>
> > > Code first:
> > > InputStream is = ;//some mixed audio
> > > byte buf[] = new byte[1024];
>
> > > System.out.println(tempDir.getAbsolutePath());
> > > File temp = File.createTempFile("aaa", ".mp3",
> > > this.getCacheDir());
>
> > > FileOutputStream out = new FileOutputStream(temp);
> > > do {
> > > int numread = is.read(buf);
> > > if (numread <= 0)
> > > break;
> > > out.write(buf, 0, numread);
> > > } while (true);
> > > out.flush();
> > > out.close();
>
> > > MediaPlayer mp = new MediaPlayer();
> > > mp.setDataSource(temp.getAbsolutePath());
> > > mp.prepare();
> > > mp.start();
>
> > > I want to make some audio fragments to one audio file, and
> > > MediaPlayer could not play with byte or stream, so I have to use
> > > tempfile.
> > > upper code would: 11-05 05:47:37.512: WARN/System.err(3934):
> > > java.io.IOException: Prepare failed.: status=0xFFFFFFFC.
> > > But, if I copy the temp file aaa.mp3 out by File Explore, and copy
> > > it into cache directory, the aaa.mp3 could be played.
> > > The temp file created by app in linux is : -rw------- app_18
> > > app_18 2868352 2008-11-05 03:54 aaa13710.mp3
> > > The file copyed into cache is : -rw-rw-rw- root root
> > > 2868352 2008-11-05 04:20 aaa13710.mp3
> > > The fiile copyed into sdcard is:----rw-rw- system system
> > > 2868352 2008-11-05 05:12 aaa13710.mp3
>
> > > so, I guess MediaPlayer play audio files with root account.
> > > Although creating temp file into sdcard is one solution, but i don't
> > > think it is a good method for slow efficiency. MediaPlay should be
> > > able to play with stream or byte, and it is a strange thing that I
> > > could create an audio file but play it.
> > > I saw other developers post this error, google wishes developer
> > > create temp files into sdcard, in fact, creating temp file into sdcard
> > > cann't solve anything.- 隐藏被引用文字 -
>
> > - 显示引用的文字 -
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