Trouble with PF_OutFlag_I_USE_AUDIO and PF_CHECKOUT_LAYER_AUDIO

i trying render graphical representation of layer's audio waveform. have seen this similar thread, problem checking out audio, cannot far.

 

in globalsetup function set out_flags thus..

 

out_data->out_flags = pf_outflag_i_use_audio;

 

but in pf_cmd_frame_setup function, , pf_cmd_render function ( pf_cmd_smart_pre_render pf_cmd_smart_render)

 

the pf_indata src_snd structure empty , in_data->start_sampl == 0, in_data->dur_sampl == 0, in_data->total_sampl == 0

 

 

i missing something, appreciate guidance,

 

thanks

 

steve (london, uk - adobe plugin developers nearby?)

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