# SND_ReadDriverInfo

## Syntax

      #include <nitro/snd.h>

      void SND_ReadDriverInfo( struct SNDDriverInfo* info );

## Arguments

`info` | 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 the `SND_ReadChannelInfo`, `SND_ReadPlayerInfo`, and `SND_ReadTrackInfo` functions to extract the necessary information from the sound driver information structure.

### Note

Note that information that was read is written directly to memory. Accordingly, when data remains in the cache, you must delete it with `DC_InvalidateRange` or a similar function before referencing the information.

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 command scheduling function. After this function is called, its processing will occur only after the command is issued with the `SND_FlushCommand` function.

If program execution must be synchronized with process completion, first use the `SND_GetCurrentCommandTag` function to obtain the command tag immediately after calling this function. Then, after the command is issued, use the command tag and call either the `SND_IsFinishedCommandTag` or `SND_WaitForCommandProc` function to confirm that processing 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

2005/02/17 Initial version.

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