HI_ACODEC_GET_DACL_VOLUME
Applicability
Product |
Supported |
|---|---|
☓ |
|
☓ |
|
√ |
|
☓ |
|
☓ |
Description
Obtains the output volume of the audio-left channel.
Prototype
int ioctl(int fd, HI_ACODEC_GET_DACL_VOLUME, hi_acodec_volume_ctrl *arg)
Parameters
Parameter |
Input/Output |
Description |
|---|---|---|
fd |
Input |
File descriptor of the audio codec. |
HI_ACODEC_GET_DACL_VOLUME |
Input |
ioctl number. |
arg |
Output |
Volume control parameter of the embedded audio codec. |
Returns
- 0: success
- Other values: failure
Restrictions
- Output volume range of the audio-left channel: [0, 127]. A larger value indicates lower volume. The value 0 indicates the maximum volume (6 dB), and the value 127 indicates the minimum volume (muted).
- For example, if the volume_ctrl variable in the hi_acodec_volume_ctrl structure is set to x, the volume is adjusted to (6 – x) dB.
Parent topic: Volume Control