Waveform Output Driver Messages (Windows Embedded CE 6.0)

1/6/2010

The following table shows the waveform output driver messages (WODM_XXX).

Programming element	Description
WODM_BREAKLOOP	This message is used to request a waveform output driver to break an output loop that was created with a WODM_WRITE message.
WODM_CLOSE	This message is used to request a waveform output driver to close a specified stream that was previously opened with a WODM_OPEN message.
WODM_GETDEVCAPS	This message is used to request a waveform output driver to return the capabilities of a specified device.
WODM_GETEXTDEVCAPS	This message is used in an MMDRV_MESSAGE_PARAMS structure passed to the WAV_IOControl function to request a waveform output driver to return the extended capabilities of a specified device.
WODM_GETNUMDEVS	This message is used to request a waveform output driver to return the number of device instances that it supports.
WODM_GETPITCH	This message is used to request a waveform output driver to return the specified device's current pitch multiplier value.
WODM_GETPLAYBACKRATE	This message is to request a waveform output driver to return the current playback rate multiplier value for the specified device.
WODM_GETPOS	This message is used to return the current position within a stream. The position is relative to the beginning of the waveform.
WODM_GETPROP	This message is used to request the properties of a waveform output driver.
WODM_GETVOLUME	This message is used to request a waveform output driver to return the current volume level setting for the specified device or stream.
WODM_OPEN	This message is used to request a waveform output driver to open a stream on the specified device.
WODM_PAUSE	This message is used to request a waveform output driver to pause playback of a waveform.
WODM_PREPARE	This message is used to request a waveform output driver to prepare a system-exclusive data buffer for output.
WODM_RESET	This message is used to request a waveform output driver to stop sending output data and return all output buffers to the list.
WODM_RESTART	This message is used to request a waveform output driver to continue playback of a waveform after playback has been paused with WODM_PAUSE.
WODM_SETPITCH	This message is used to request a waveform output driver to set the specified device's pitch multiplier value.
WODM_SETPLAYBACKRATE	This message is used to request a waveform output driver to set the playback rate multiplier value for the specified device.
WODM_SETPROP	This message isused to request a waveform output driver to change properties.
WODM_SETVOLUME	This message is used to request a waveform output driver to set the playback rate multiplier value for the specified device.
WODM_UNPREPARE	This message is used to request a waveform output driver to remove the buffer preparation performed in response to WODM_PREPARE.
WODM_WRITE	This message is used to request a waveform output driver to write a waveform data block to the specified device.

See Also

Reference

Waveform Input Driver Messages
WPDM Messages
Audio PDD Functions
Waveform Audio Driver Functions
Waveform Audio Driver Structures

Other Resources

Waveform Audio Driver Reference