MMTIME

The MMTIME structure contains timing information for different types of multimedia data.

typedef struct mmtime_tag {

UINT wType;

union {

DWORD ms;

DWORD sample;

DWORD cb;

DWORD ticks;

struct {

BYTE hour;

BYTE min;

BYTE sec;

BYTE frame;

BYTE fps;

BYTE dummy;

BYTE pad[2]

} smpte;

struct {

DWORD songptrpos;

} midi;

} u;

} MMTIME;

Members
wType

Time format. It can be one of the following values:

TIME_BYTES	Current byte offset from beginning of the file.
TIME_MIDI	MIDI time.
TIME_MS	Time in milliseconds.
TIME_SAMPLES	Number of waveform-audio samples.
TIME_SMPTE	SMPTE (Society of Motion Picture and Television Engineers) time.
TIME_TICKS	Ticks within a MIDI stream.

Number of milliseconds. Used when wType is TIME_MS.

sample

Number of samples. Used when wType is TIME_SAMPLES.

Byte count. Used when wType is TIME_BYTES.

ticks

Ticks in MIDI stream. Used when wType is TIME_TICKS.

smpte
SMPTE time structure. Used when wType is TIME_SMPTE.

songptrpos
Song pointer position.

midi

MIDI time structure. Used when wType is TIME_MIDI.

hour
Hours.

min
Minutes.

sec
Seconds.

frame
Frames.

fps
Frames per second (24, 25, 29 (30 drop), or 30).

dummy
Dummy byte for alignment.

pad
Padding.

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