Hi,
The current (Paul's) LAAGA proposal does not timestamp buffers. Is
this a design problem or something that could be extended..? I'm
looking through the OSX documentation. It's "process" callback for
AudioUnits looks like this, page 48 in the PDF:
typedef CALLBACK_API_C( ComponentResult, AudioUnitRenderSliceProc )
(void *inComponentStorage,
AudioUnitRenderActionFlags inActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inOutputBusNumber,
AudioBuffer *ioData);
And the timestamp looks like (page 109 in PDF):
struct AudioTimeStamp
{
Float64 mSampleTime; // the absolute sample time
UInt64 mHostTime; // the host's root timebase's
// time
Float64 mRateScalar; // the system rate scalar
UInt64 mWordClockTime; // the word clock time
SMPTETime mSMPTETime; // the SMPTE time
UInt32 mFlags; // the flags indicate which
// fields are valid
};
I don't personally understand what all those different times are and
why they are needed, but shouldn't we have something like this?
Simon.
