tmsf-to-integer

Function

Package: common-graphics

Arguments: track minute second frame

Converts the four values specifying the track, minute, second, and frame to a single integer suitable to be used by an MCI device whose time format is :tmsf.

For finer control over device operation, various optional keyword arguments are provided by the methods. For example, to play the first minute of the third track on the cd:

(mci-device-set-time-format cd :tmsf)
(mci-play cd :from (tmsf-to-integer 3 0 0 0)
             :to (tmsf-to-integer 3 1 0 0)

The above code first tells the device to use the track-minute-second-frame (:tmsf) time format for describing its current location, and then tells the CD to play from "track 3 minute 0" to "track 3 minute 1". (The function tmsf-to-integer is required because there are various time formats that use different numbers of components.) To determine the current position of the CD device while it is playing, use:

(multiple-value-setq (track minute second frame)
  (integer-to-tmsf (mci-device-current-position cd)))

See About MCI support in cgide.htm.

Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.

The documentation is described in introduction.htm and the index is in index.htm.

Created 2000.10.5.