Support pausing at a frame-accurate position

[star-andy]

Hello, I have a question to consult
My English is not very good, please forgive me

I will be more MediaSource add ConcatenatingMediaSource ,
I want to listen CurrentWindowIndex to finish playing

 @Override
        public void onLoadingChanged(boolean isLoading) {
            int curTime = (int) (player.getCurrentPosition() );
            int time = (int) (player.getBufferedPosition() );
            System.out.println("播放: onLoadingChanged  " + curTime + "--->" + time);
            if (time != 0 && curTime == time) {
                player.setPlayWhenReady(false)；
                }
            }
        }

I can't do it that way

[tonihei]

You can listen to onPositionDiscontinuity and check if player.getCurrentWindowIndex changed in there.

[star-andy]

@tonihei Thank you for your reply
I want to listen for each end, not the second beginning

player.getCurrentWindowIndex

When changing the source has become the next

[tonihei]

There is only one single moment in which playback changes from window index to the next. If you'd like to know the previous index, you could just save the current index to a variable and check if it changed in the onPositionDiscontinuity callback.

If you want to do something at a specific playback position, you can also try to send a message at a certain time like so: player.createMessage((type, payload) -> doSomething()).setPosition(12345).setHandler(new Handler()).send();

[star-andy]

@tonihei Send is an imprecise
I want it to be when the current index play is done

  player.setPlayWhenReady(false)；

It's going to stop after the last frame of index not the first frame of next index

[tonihei]

The message is imprecise because it's send on another thread.

I'll mark this as an enhancement to support sending precise messages which may block the playback thread while the message is handled. We do something like that in our testutils here if you want to give it a go.

An alternative is to NOT add MediaSources behind the current one to the ConcatenatingMediaSource and wait until the state changes to STATE_ENDED. After this happens you can add new sources and seek to the next item.

[star-andy]

Thank you very much
for trying to prepare one MediaSource per time in PlaybackState.STATE_ENDED:
Reprepare MediaSource but there is currently a problem that there will be a lag between two prepare periods and I wonder if I can add a transition effect to add a better experience