#include <nitro/snd.h>
void SND_LockChannel( u32 chBitMask, u32 flags );
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. |
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. To unlock channels, use the SND_UnlockChannel
function.
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.
SND_UnlockChannel, SND_FlushCommand, SND_GetCurrentCommandTag, SND_IsFinishedCommandTag, SND_WaitForCommandProc
02/17/2005 Added a note about ARM7 command processing
07/20/2004 Initial version