HI_ACODEC_GET_ADCL_VOLUME

Applicable Products

Product	Supported
Ascend 950PR/Ascend 950DT	☓
Atlas A3 training products/Atlas A3 inference products	☓
Atlas A2 training products/Atlas A2 inference products	☓
Atlas 200I/500 A2 inference products	√
Atlas inference products	☓
Atlas training products	☓

Function

Obtains the input volume of the audio-left channel.

Prototype

int ioctl(int fd, HI_ACODEC_GET_ADCL_VOLUME, hi_acodec_volume_ctrl *arg)

Parameters

Parameter	Input/Output	Description
fd	Input	File descriptor of the audio codec.
HI_ACODEC_GET_ADCL_VOLUME	Input	ioctl number.
arg	Output	Volume control parameter of the embedded audio codec.

Returns

0: success
Other values: failure.

Restrictions

Input volume range of the audio-left channel: [0, 127]. A larger value indicates lower volume. The value 0 indicates the maximum volume (30 dB), and the value 127 indicates the minimum volume (–97 dB).
For example, if the volume_ctrl variable in the hi_acodec_volume_ctrl structure is set to y, the volume is adjusted to (30 – y) dB.

Parent topic: Volume Control