Hello Any idea of how volume is controlled/handled in direct output thread?
always full? jrc On Thursday, April 25, 2013 6:18:51 AM UTC+5:30, David Kim wrote: > > Dear Eric, > > Thank you very much for your very clear and detail explanation. > > Best Regards, > > > On Wednesday, April 17, 2013 5:58:30 AM UTC+9, Eric Laurent wrote: >> >> David, >> >> Mutlichannel audio uses a DirectoutputThread. >> The DirectOutputThread is selected if an AudioTrack is opened with a >> channel mask indicating 5.1 AND the audio HAL has reported an output >> profile in audio_policy.conf with direct output flag set and a compatible >> channel mask or "dynamic" channel mask. In case of "dynamic" channel mask, >> the audio HAL is queried after the HDMI sink is connected for the actual >> number of channels supported. >> The output of the down mixer is stereo only and mixed with other tracks >> by MixerThread. >> >> Thanks. >> >> Eric. >> >> >> On Sunday, April 14, 2013 8:04:40 PM UTC-7, David Kim wrote: >>> >>> Dear experts, >>> >>> I would like to ask some questions about multi channel supporting on >>> JellyBean. Please give your advice for my questions. >>> >>> According to Google, multi channel audio can be supported from JB 4.1 as >>> follows >>> *'Multichannel audio : Android 4.1 supports multichannel audio on >>> devices that have hardware multichannel audio out through the HDMI port.'* >>> >>> - When I connect a TV which can support multi channel through HDMI port, >>> what is the audio path in the audioflinger? >>> - In case of that, which thread is using for? DirectOutputThread or >>> MixerThread? >>> - Which use cases we are using the DirectOutputThread for? >>> - Is the output of Downmixer in the MixerThread 2-channel stereo only? >>> >>> Thank you in advance. >>> >>> >>> -- -- 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/groups/opt_out.
