Hi. I'm Android Developer. I have some questions about AudioMixer of Android AudioFramework.
When Mixing audio frames sample by sample, In theory, Overflow can be occurred. Because size of sample is 16bit size , so 32bit outTemp buffer is used in AudioMixer.cpp But, Tracks can be max 32 tracks, so It can be the range of -32*4096*32767 ~ 32(max number of tracks)*4096(volume max value)*32767(sample max valume). But 32bit signed pcm can be ranged of -16*4096*32767 ~ 16*4096*32767. So 16*4096*32767 ~ 32(max number of tracks)*4096(volume max value)*32767(sample max valume) or -32*4096*32767~ -16*4096*32767 range occur overflow. I want know the reason that how come the outTemp buffer size is 32bit, and When the integer volume range is 0~ 2048 ,or outTemp buffer size is 64bit, the overflow does not occur. Please reply the question. Thanks, -- -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting --- You received this message because you are subscribed to the Google Groups "android-porting" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-porting+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
