# SND_StopUnlockedChannel

## Syntax

      #include <nitro/snd.h>

      void SND_StopUnlockedChannel( u32 chBitMask, u32 flags );

## Arguments

`chBitMask` | The channel bit mask. It specifies which channels to control.
`flags` | Option flags. At the current time the flags are not used, so 0 is entered here.

## Return Values

None.

## Description

Stops the unlocked channel.

The channel bit mask `chBitMask` specifies which channels to control. The channels are represented in order, with the lowest bit representing channel 0. Only channels whose representative bits are standing are controlled.

Nothing will be done to channels that have been locked with the `SND_LockChannel` function.

### Note

This function is an ARM7 reserved 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_LockChannel, SND_FlushCommand, SND_GetCurrentCommandTag, SND_IsFinishedCommandTag, SND_WaitForCommandProc`

## Revision History

2005/02/17 Added a note about ARM7 command processing.
2004/08/10 Initial version.

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