hi_mpi_ao_enable_chn

Description

Enables an AO channel.

Restrictions

• Before enabling an AO channel, configure the attributes of the AO device by calling hi_mpi_ao_set_pub_attr. Otherwise, an error code is returned, indicating that the attributes are not configured.
• Before enabling an AO channel, enable the AO device to which the AO channel belongs by calling hi_mpi_ao_enable. Otherwise, an error code is returned, indicating that the AO device is not started.
• When the audio-left channel or stereo channel is used for recording, ao_chn must be fixed at 0. When the audio-right channel is used for recording, ao_chn is 1.
• If the AO device is enabled, a code indicating success is returned.

Prototype

hi_s32 hi_mpi_ao_enable_chn(hi_audio_dev ao_dev, hi_ao_chn ao_chn);

Parameters

Returns

• 0: success
• Other values: failure. For details, see Audio Return Codes.