I also wanted to use the soundpool, but lack of documentation made it
impossible to use.
I tried it they way i would think it would work, but it didn't.
I am using mediaplayers now, i cannot play the same sound multiple
times concurrently, Too bad.
On 12 okt, 19:32, Robert Green <[EMAIL PROTECTED]> wrote:
> I have a few more comments on this class.
>
> 1) Is it going to be officially supported?
>
> 2) Here are some problems I've found with it and workarounds I used:
>
> Bug #1) Looping an mp3 crashes around the 8th loop but looping waves
> seems to work fine.
> Bug #2) SoundPool.stop(streamId) immediately crashes the app.
> Bug #3) setRate() with a rate over 1.5 either doesn't work or also
> crashes the VM with no exception.
>
> My new workaround for lack of stop():
>
> to stop a stream, call setLoop(streamId, 0) then setVolume(streamId,
> 0f, 0f). This will stop a loop after it's done but drop the volume so
> it seems to the user to have quit right then. After that, you don't
> need to call stop() because the stream will clean itself up from the
> loop stopping. This worked for me.
>
> Even if they haven't readied it for public use, it's the only suitable
> API forsoundin games. I looked into using MediaPlayers but if you
> have more than a couple of sounds and you need to be able to play the
> samesounda few times concurrently, it's just not a feasible
> solution.
>
> I'm really surprised that there is no access to the audio buffer. How
> are we supposed to write dynamic audio generation apps?
>
> Androidreally needs 2 things to be competitive with the audio side:
>
> 1) Public access to the media decoders (so a dev can decode an mp3
> into raw)
> 2) Public access to asoundstream output buffer (so a dev can pipe in
> rawsounddata)
>
> On Oct 11, 5:30 pm, Robert Green <[EMAIL PROTECTED]> wrote:
>
> > Problem solved. Here's how I did it:
>
> > This only loads onesoundbut you can load as many as you want. I have
> > an mp3 in my res/raw directory called explosion.mp3.
>
> > Java:
>
> > public static final int SOUND_EXPLOSION = 1;
> > public static final int SOUND_YOU_WIN = 2;
> > public static final int SOUND_YOU_LOSE = 3;
>
> > private SoundPool soundPool;
> > private HashMap<Integer, Integer> soundPoolMap;
>
> > private void initSounds() {
> > soundPool = new SoundPool(4, AudioManager.STREAM_MUSIC,
> > 100);
> > soundPoolMap = new HashMap<Integer, Integer>();
> > soundPoolMap.put(SOUND_EXPLOSION,
> > soundPool.load(getContext(), R.raw.explosion, 1));
> > }
>
> > public void playSound(intsound) {
> > AudioManager mgr = (AudioManager)
> > getContext().getSystemService(Context.AUDIO_SERVICE);
> > int streamVolume =
> > mgr.getStreamVolume(AudioManager.STREAM_MUSIC);
> > soundPool.play(soundPoolMap.get(sound), streamVolume,
> > streamVolume, 1, 0, 1f);
> > }
>
> > public void update() {
> > if (isExploding()) {
> > playSound(SOUND_EXPLOSION);
> > }
> > }
>
> > On Oct 11, 12:11 pm, Robert Green <[EMAIL PROTECTED]> wrote:
>
> > > I'm addingsoundinto my game now and need the ability to havesound
> > > effects concurrent (like 2 of the same explosion playing at the same
> > > time, etc) so using the MediaPlayer is less than optimal for me. I was
> > > thinking of just adding a traditionalsoundupdate into the main loop
> > > which would probably work and isn't _that_ hard to write but I don't
> > > think I have access to the decoder andsoundbuffer.
>
> > > I found a class called SoundPool that appears to be suited for exactly
> > > what I'm trying to do however the documentation is very weak
> > > -http://code.google.com/android/reference/android/media/SoundPool.html
>
> > > Has anyone used this with success? If so, could I see a little code
> > > snippet?
>
> > > I tried this:
> > > Java:
>
> > > private void initSounds() {
> > > // 4 streams
> > > // stream type 3 is music
> > > soundPool = new SoundPool(4, 3, 100);
> > > int explosionSound = soundPool.load(getContext(),
> > > R.raw.explosion, 1);
> > > soundPool.play(explosionSound, 100, 100, 1, 0, 1);
> > > }
>
> > > but it didn't appear to do anything. I didn't get errors but I also
> > > heard nosound. Perhaps I need to configure something for the emulator
> > > to work like that?
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