Documentation

hi_mpi_ai_enable_chn

The Atlas 200/300/500 Inference Product does not support this API.

The Atlas Training Series Product does not support this API.

Description

Enables an AI channel.

Restrictions

  • Before enabling an AI channel, set the attributes of the AI device by calling hi_mpi_ai_set_pub_attr. Otherwise, an error code is returned, indicating that the attributes are not configured.
  • Before enabling an AI channel, enable the AI device to which the AI channel belongs by calling hi_mpi_ai_enable. Otherwise, an error code is returned, indicating that the AI device is not started.
  • 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.

Prototype

hi_s32 hi_mpi_ai_enable_chn(hi_audio_dev ai_dev, hi_ai_chn ai_chn);

Parameters

Parameter

Input/Output

Description

ai_dev

Input

Audio device ID. The value range is [0, 2].

ai_chn

Input

Recording channel ID.

Returns

Parent topic: AI/AO