Sound_SampleRate 1 (changes)
Showing changes from revision #1 to #2:
Added | Removed | Changed
Programmer's SoundDMA Reference Manuals
» Part 15 – SWI Calls
» Sound Sound_SampleRate
» Sound_SampleRate 1Sound_SampleRate
» Sound_SampleRate 1
Sound_SampleRate 1
(SWI &40146)
| Entry | |
|---|---|
| R0 | 1 (Reason code) |
| Exit | |
|---|---|
| R1 | Current sample rate index (1+) |
| R2 | Current sample rate (1/1024Hz) |
| All other registers preserved | |
Use
This call can be used to read the current sample rate index, and the sample rate that index corresponds to.
Notes
This SWI should only be used if Sound_Mode 0 indicates that 16 bit sound output is supported.
Sample rate indices are 1-based.
Sample rates are measured in units of 1/1024Hz. E.g. 22050Hz would be represented as 22050*1024 = 22579200.
Sound_SampleRate 3 can be used to set the current sample rate.
See also
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.