QMedia Grabber channel commands

QM_GetGrabberChannels

QM_GetGrabberChannels(areaRef; channelRefs; channelTypes):error
areaRef Longint Grabber area reference
channelRefs Array longint Channel references
channelTypes Array string Channel types
error Longint Error result

Returns the channel list of a grabber plug-in area.

The grabber plug-in area is specified by areaRef.

Parameter channelRef is the reference to the channel. The channel reference must have been previously obtained with a call to QM_NewChannel.

Parameters channelRefs and channelTypes receive the IDs and types of all channels respectively.

QMedia defines the following constants for identifying channel types:

qm_VideoMediaType "vide" Video media type
qm_SoundMediaType "soun" Sound media type

Example

ARRAY LONGINT($channelRefs;0)
ARRAY STRING(4;$channelTypes;0)
 
$error:=QM_GetGrabberChannels(xGrabber;$channelRefs;$channelTypes)
 

Related commands

QM_NewChannel Creates a grabber channel
QM_DisposeChannel Destroys a grabber channel.

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