HI_ACODEC_SET_ADCL_VOLUME
The
The
Description
Sets the input volume of the audio-left channel.
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.
Prototype
int ioctl(int fd, HI_ACODEC_SET_ADCL_VOLUME, hi_acodec_volume_ctrl *arg);
Parameters
Parameter |
Input/Output |
Description |
|---|---|---|
fd |
Input |
File descriptor of the audio codec. |
HI_ACODEC_SET_ADCL_VOLUME |
Input |
ioctl number. |
arg |
Input |
Volume control parameter of the embedded audio codec. |
Returns
- 0: success
- Other values: failure
Parent topic: Volume Control