Not able to configure my playback device to MONO . But my playback device supports MONO. What is wrong in the below configuration Error : Channels not available for PLAYBACK device

retVal = snd_pcm_hw_params_set_channels( pcm, hwparams, 1); if (retVal < 0){ printf("Channels not available : %s\n", name); return retVal; }

PLEASE Let me know what mistake am i doing.

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