hi_mpi_ai_enable_chn

Applicability

Function Description

Enables an AI channel.

Prototype

hi_s32 hi_mpi_ai_enable_chn(hi_audio_dev ai_dev, hi_ai_chn ai_chn)

Parameters

Returns

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

Restrictions

• Before enabling an AI channel, you must set the attributes of the AI device by calling hi_mpi_ai_set_pub_attr. Otherwise, an error code indicating that the attributes are not set is returned.
• Before enabling an AI channel, you must call hi_mpi_ai_enable to enable the AI device to which the AI channel belongs. Otherwise, the error code indicating that the AI device is not enabled is returned.
• When the audio-left channel or stereo channel is used for recording, ai_chn must be fixed at 0. When the audio-right channel is used for recording, ai_chn is 1.
• If the channel of the AI device is enabled, a code indicating success is returned.

See Also

For the API call sequence, see Obtaining and Playing Audios.