SND_LockChannel 
Syntax
#include <nitro/snd.h>void SND_LockChannel( 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. |
Description
This function locks channels so they can be directly controlled.
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.
A locked channel cannot be used in sequence playback. If a channel that is specified for locking is already being used, the sound is forcedly stopped. Use the SND_UnlockChannel function to unlock channels.
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_UnlockChannel, SND_FlushCommand, SND_GetCurrentCommandTag, SND_IsFinishedCommandTag, SND_WaitForCommandProc
Revision History
2005/02/17 Added a note about ARM7 command processing.
2004/07/20 Initial version.