Hi Alsa Developers, I am working on ladspa plugin using alsa lib . There is problem with alsa library with those ladspa plugins where there is change in number of input and output audio ports from the ladspa plugin.E,g for ladspa plugin, if I do analyseplugin surround_encoder_1401.soPorts: "L" input, audio           "R" input, audio            "C" input, audio            "S" input, audio            "Lt" output, audio            "Rt" output, audio There are 4 input ports("L","R","C","S") for ladspa and 2 output port from ladspa("Lt","Rt"). This is equivalent to 4 input channels and 2 output channels. The alsa library does not handle this plugin properly. I receive segmentation fault on using this plugin in alsa chain scenario at line if (pchannels[chn] == NULL && chn < ichannels) in function snd_pcm_ladspa_allocate_memory in file pcm_ladspa.c

Similar issue I have seen in split_1406.so, which takes 1 channel input( 1 input port) and gives 2 channel output( 2 output ports).No segmentation fault in this case but it ignores the 2nd channel . Is there a way to solve these problem ?

RegardsVarun Sood