# SND_ReadDriverInfo

## C Specification

      #include <nitro/snd.h>

      void SND_ReadDriverInfo( struct SNDDriverInfo* info );

## Arguments

`info` | The pointer to the driver information structure to store the read information

## Return Values

None.

## Description

Reads the sound driver information.

The information that was read is stored in `info`, the sound driver structure. Once the read completes, call `SND_ReadChannelInfo`, `SND_ReadPlayerInfo`, or `SND_ReadTrackInfo` to obtain the necessary information from the sound driver information structure.

### Caution

Note that information that was read is written directly to memory. Accordingly, when data still remains in cache, it must be deleted with `DC_InvalidateRange` before referencing the sound driver information structure.

The memory region indicated by the pointer passed to the argument cannot be deleted until the process on ARM7 completes.

This function is an ARM7 reserved function. After this function is called, processing occurs only after the command is issued with the `SND_FlushCommand` function.

When it is necessary to synchronize something with the completion of the process, first use `SND_GetCurrentCommandTag` to obtain the command tag immediately after calling this function. After the command is issued, use the command tag and call either the `SND_IsFinishedCommandTag` or `SND_WaitForCommandProc` function to confirm that the process has finished or to wait for it to complete.

## See Also

`SND_ReadChannelInfo, SND_ReadPlayerInfo, SND_ReadTrackInfo, SND_FlushCommand, SND_GetCurrentCommandTag, SND_IsFinishedCommandTag, SND_WaitForCommandProc`

## Revision History

02/17/2005 Initial version