我知道一条语句可以获得长度,可是我不明白朵MSND里描述的PPQN和SMPTE到底指什么?
wsprintf(
lpszCommand,
"status %s %s %s",
"my device id ",
"waveaudio",
"length"
); Returns the total length of the media, in the current time format.
For PPQN files, the length is returned in song pointer units. For SMPTE files, it is returned as hh:mm:ss:ff, where hh is hours, mm is minutes, ss is seconds, and ff is frames. For VCR devices, the length is 2 hours (unless the length has been explicitly changed using the set command).
wsprintf(
lpszCommand,
"status %s %s %s",
"my device id ",
"waveaudio",
"length"
); Returns the total length of the media, in the current time format.
For PPQN files, the length is returned in song pointer units. For SMPTE files, it is returned as hh:mm:ss:ff, where hh is hours, mm is minutes, ss is seconds, and ff is frames. For VCR devices, the length is 2 hours (unless the length has been explicitly changed using the set command).
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