Found the answer by myself. :-)
Our codes are really out-of-date, need to update and keep in pace.
>From Android 4.2, google defined several output flags:
Ÿ AUDIO_OUTPUT_FLAG_PRIMARY
Ÿ AUDIO_OUTPUT_FLAG_DEEP_BUFFER
Ÿ AUDIO_OUTPUT_FLAG_FAST
Ÿ AUDIO_OUTPUT_FLAG_NONE
Ÿ AUDIO_OUTPUT_FLAG_DIRECT
Use different Java API to create audio track will apply different output
flags:
Ÿ 1)SoundPool: FAST flag
Ÿ 2)AudioTrack: NONE flag
Ÿ 3)MediaPlayer: (done in stagefright / NuPlayer)
a)Pure music && duration > 5s: DEEP_BUFFER flag
b)Other: NONE flag
On Saturday, August 10, 2013 2:33:08 PM UTC+8, Xin Qian wrote:
>
> This issue has perplexed me for a long time. Many games didn't follow
> google's rules to add FAST flag for low latency sound (e.g. use SoundPool),
> just use MediaPlayer to play MUSIC stream. Then how could we distinguish
> it's real music stream or not? For real music stream, we need to use deep
> buffer output, while for game music stream, maybe we need to use low
> latency output for better user experience. Really eager to know how to deal
> with such kind of issues. Thanks a lot.
>
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