SndDoubleBufferPtr
#include <Sound.h>
long dbNumFrames; 4 0 number of frames in buffer
long dbFlags; 4 4 buffer status flags
long dbUserInfo[2]; 8 8 for application's use
char dbSoundData[1]; 1 16 array of data
typedef SndDoubleBuffer *SndDoubleBufferPtr;
Field descriptions
dbNumFrames The number of frames in the dbSoundData array.
dbFlags Buffer status flags.
dbUserInfo Two long words into which you can place information that you
need to access in your doubleback procedure.
dbSoundData A variable-length array. You write samples into this array,
and the synthesizer reads samples out of this array.
The buffer status flags field for each of the two buffers may contain either of
these values:
dbBufferReady
dbLastBuffer
All other bits in the dbFlags field are reserved by Apple, and your application
should not modify them.