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MdigInquire



Function Map
Parameter Associations
Table: For the general digitizer settings
+ combination: For specifying the speed and precision of the interpolation
+ combination: For inquiring additional allocation details
+ combination: For specifying the multicast master-slave relationship
+ combination: Returns the format of the planar color buffer
+ combination: Returns the format of the packed color buffer
+ combination: For specifying which Camera Link camera to inquire
+ combination: For specifying whether anti-aliasing and/or dithering is enabled
+ combination: For getting the string size
Table: For the general reference settings
+ combination: For specifying which acquisition path is inquired
+ combination: For specifying the black and white reference level in Volts
Table: For inquiring the input gain and shading correction
+ combination: For specifying the acquisition path
+ combination: For specifying the specific video signal component to apply the input-gain setting
Table: For inquiring I/O signals and their mode
+ combination: For specifying the type and number of the I/O signal to inquire
+ combination: For specifying the type of I/O signal to inquire
Table: For inquiring the state of specified user-bits in a static-user-output register
+ combination: For inquiring the bit in the static-user-output register
+ combination: For inquiring the static-user-output register type to inquire
Table: For inquiring the settings to grab using a trigger
+ combination: For specifying which I/O command register bit to use
Table: For inquiring frame burst settings
Table: For inquiring the settings of a timer
Table: For inquiring the camera's exposure
+ combination: For determining the largest or smallest values supported
Table: For inquiring the settings of a rotary decoder
+ combination: For specifying which rotary decoder to inquire
Table: For inquiring a data latch
+ combination: For specifying the data latch to inquire
+ combination: For specifying which on-board timer to inquire
Table: For inquiring your GigE Vision camera's optional settings
Synopsis
Inquire about a digitizer setting.
Syntax
MIL_INT MdigInquire(
MIL_ID DigId, //in
MIL_INT64 InquireType, //in
void *UserVarPtr //out
)
Description

This function allows you to inquire about various digitizer settings.

Note that you can use MdigControl() to control specific digitizer settings.

You can also interactively inquire most of the digitizer settings in real-time, using Matrox Feature Browser; to access this interface, use Matrox Intellicam or MdigControl() with M_GC_FEATURE_BROWSER.

[Matrox GenTL driver (Update 34); Matrox GigE Vision driver (introduced M10); Matrox USB3 Vision driver (Update 19)]

Typically, the supported inquire types inquire the GenICam-compliant camera (or device) associated with the digitizer. These inquire types assume your camera supports the associated GenICam standard feature naming convention (SFNC) feature. If the device does not support the associated GenICam SFNC feature, an error is generated. In case of error, use MdigInquireFeature() with the device-specific feature names and values specified by the device manufacturer.

Note that there are several inquire types that are available on a Host system, even without any additional Matrox imaging boards; these are to inquire a simulated digitizer (allocated using MdigAlloc() with M_EMULATED). To see the inquire types available to inquire a simulated digitizer, select the Host system as your board type in this help file. For more information on simulated digitizers, refer to the Simulated digitizer section of Chapter 25: Grabbing with your digitizer.

Note that this function reference has not been updated for a MIL system added during a MIL update. Refer to the MIL system's release note to see which MIL system’s documentation you should use in its place and any possible differences.
Parameters
This function is not supported on the selected boards.
This function reference has not been updated for the selected MIL system. To show the content of this page, choose a second MIL system; refer to the MIL system's release note to see which MIL system’s documentation to choose and any possible differences.
Parameters
DigId

Specifies the identifier of the digitizer.

InquireType

Specifies the digitizer setting to inquire.

See the Parameter associations section for possible values that can be specified.

UserVarPtr
Accepts the address of one of the following (see the Parameter associations section for specifics on which is expected):
  • array of type MIL_TEXT_CHAR [optionally, in C++: a reference to a MIL_STRING]
  • MIL_DOUBLE
  • MIL_ID
  • MIL_INT
  • MIL_INT64

Specifies the address in which to write the requested information. Since the MdigInquire() function also returns the requested information, you can set this parameter to M_NULL.

See the Parameter associations section for possible values that can be returned.

The following inquire types allow you to inquire various digitizer settings.

function map For the general digitizer settings
Click to summarize
InquireType
Description MIL system-specific
tooltip (‡)
UserVarPtr
- Possible values returned
Click to summarize M_BAYER_COEFFICIENTS_ID

Inquires a MIL identifier of the internal buffer containing the white balance coefficients used when grabbing from a camera with a Bayer color filter. Note that you cannot free the retrieved buffer. SET

(summarize)
c
M10
k
M10
m o p r
U27
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U28
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U75
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MIL system specific

Refer to your Matrox Imaging board's hardware manual for more details.

k
M10
m p r
U27
y
U75
aa

Note that this inquire type is used to perform Bayer conversion if performed by the Host. To inquire the Bayer conversion on the camera, use MdigInquireFeature(); refer to your camera's documentation for details regarding the features to inquire.

c
M10
o v

Note that this inquire type is only supported on Matrox Solios eV-CLB and eV-CLBL.

m

Note that this inquire type is only available when using color versions of Matrox Iris GTR (such as 1300C).

t
U28
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_ID
c
M10
k
M10
m o p r
U27
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Click to summarize M_NULL

Specifies that you have set M_WHITE_BALANCE to M_DISABLE.

c
M10
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M10
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U27
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Click to summarize MIL array buffer identifier

Specifies the identifier of an internally allocated M_ARRAY buffer containing the white balance coefficients.

c
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U27
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Click to summarize M_BAYER_CONVERSION

Inquires whether a Bayer color conversion is performed by your digitizer. SET

(summarize)
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M10
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U27
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MIL system specific

Refer to your Matrox Imaging board's hardware manual for more details.

k
M10
m p r
U27
y
U75
aa

Note that this inquire type is used to perform Bayer conversion if performed by the Host. To inquire the Bayer conversion on the camera, use MdigInquireFeature(); refer to your camera's documentation for details regarding the features to inquire.

c
M10
o v

Note that this inquire type is only supported on Matrox Solios eV-CLB and eV-CLBL.

m

Note that this inquire type is only available when using color versions of Matrox Iris GTR (such as 1300C).

t
U28
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
c
M10
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Click to summarize M_DISABLE

Specifies to not perform Bayer conversion on the grabbed image.

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Click to summarize M_ENABLE

Specifies to perform Bayer conversion on the grabbed image. INFO

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M10
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U27
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Click to summarize M_BAYER_PATTERN

Inquires the Bayer pattern used by the camera.

(summarize)
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MIL system specific

Refer to your Matrox Imaging board's hardware manual for more details.

k
M10
m y
U75

Refer to your camera's hardware manual for more details.

c
M10
o v

Note that this inquire type is only supported on Matrox Solios eV-CLB and eV-CLBL.

m

Note that this inquire type is only available when using color versions of Matrox Iris GTR (such as 1300C).

t
U28
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
c
M10
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M10
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Click to summarize M_NULL

Specifies that no Bayer pattern is used by the camera.

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Click to summarize M_BAYER_BG

Specifies the Bayer pattern that has the top-left pixel as the blue component and the next pixel as the green component. INFO

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Click to summarize M_BAYER_GB

Specifies the Bayer pattern that has the top-left pixel as the green component and the next pixel as the blue component. INFO

c
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U27
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Click to summarize M_BAYER_GR

Specifies the Bayer pattern that has the top-left pixel as the green component and the next pixel as the red component. INFO

c
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U27
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Click to summarize M_BAYER_RG

Specifies the Bayer pattern that has the top-left pixel as the red component and the next pixel as the green component. INFO

c
M10
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M10
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U27
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Click to summarize M_BOARD_REVISION

Inquires the revision number of your digitizer.

(summarize)
t
U28
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
t
U28
Click to summarize Value

Specifies the revision number.

t
U28
Click to summarize M_CAMERA_COLOR_LOCK

Inquires whether a color-lock check is done before starting each grab. Note that this is only applicable when the digitizer uses a composite or Y/C color DCF. To establish if the camera lock was successful use M_CAMERA_LOCK. SET

(summarize)
g
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
g
Click to summarize M_DISABLE

Specifies that a color-lock check will not be done.

g
Click to summarize M_ENABLE

Specifies that a color-lock check will be done.

g
Click to summarize M_CAMERA_COLOR_LOCKED

Inquires whether a color-lock is currently active. Note that this is only applicable when the digitizer uses a composite or Y/C color DCF.

(summarize)
g h
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
g h
Click to summarize M_NO

Specifies that color-lock is not active.

g h
Click to summarize M_YES

Specifies that color-lock is active.

g h
Click to summarize M_CAMERA_LOCK

Inquires whether to check if the camera is locked with the digitizer after channel-switching. SET

(summarize)
g l
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
g l
Click to summarize M_DISABLE

Specifies that the grab operation (such as, MdigGrab()) grabs without verifying whether the digitizer is locked with the camera. INFO

g l
Click to summarize M_ENABLE

Specifies that the grab operation (such as, MdigGrab()) waits until the digitizer is locked with the camera before starting the grab.

g l
Click to summarize M_CAMERA_LOCK_SENSITIVITY

Inquires how sensitive the digitizer is to locking with the next camera, during a channel switch when M_CAMERA_LOCK is enabled. SET

(summarize)
g
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
g
Click to summarize 0 <= Value <= 511

Specifies the camera line-lock sensitivity level. INFO

g
Click to summarize M_CAMERA_LOCKED

Inquires whether the digitizer is locked to the camera.

(summarize)
a g h i l u
U36
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
a g h i l u
U36
Click to summarize M_NO

Specifies that a camera lock failed.

a g h i l u
U36
Click to summarize M_YES

Specifies that a camera lock succeeded.

a g h i l u
U36
Click to summarize M_CAMERA_MODEL +

Inquires the name of the camera model.

(summarize)
c
M10
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: array of type MIL_TEXT_CHAR [optionally, in C++: MIL_STRING ] MORE
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M10
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Click to summarize Value

Specifies the name of the camera model.

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M10
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Click to summarize M_CAMERA_PRESENT

Inquires whether a camera is present. Note that this does not indicate that a camera is locked.

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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
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Click to summarize M_NO

Specifies that no camera is present.

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Click to summarize M_YES

Specifies that a camera is present.

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Click to summarize M_CAMERA_UNLOCK_SENSITIVITY

Inquires the sensitivity of the frame grabber to unlocking from the camera, during a channel switch. Note that M_CAMERA_LOCK must be enabled for this to have an effect. The unlock sensitivity determines how quickly an unlock can occur and how reliable the unlock is. SET

(summarize)
g
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
g
Click to summarize 0 <= Value <= 255

Specifies the camera line-unlock sensitivity level. INFO

g
Click to summarize M_CAMERA_VENDOR +

Inquires the name of the camera vendor.

(summarize)
c
M10
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: array of type MIL_TEXT_CHAR [optionally, in C++: MIL_STRING ] MORE
c
M10
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Click to summarize "String"

Specifies the name of the camera vendor.

c
M10
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Click to summarize M_CHANNEL

Inquires the channel on which the digitizer is to acquire data.

Note that typically, this inquire type is only available when the specified digitizer uses acquisition paths with several multiplexed data inputs. SET

(summarize)
g i l u
U36
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT64
g i l u
U36
Click to summarize M_CH0

Specifies channel 0 as the channel on which the digitizer is to receive input data.

g i l u
U36
Click to summarize M_CH1

Specifies channel 1 as the channel on which the digitizer is to receive input data. INFO

g i l u
U36
Click to summarize M_CH2

Specifies channel 2 as the channel on which the digitizer is to receive input data. INFO

g i u
U36
Click to summarize M_CH3

Specifies channel 3 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH4

Specifies channel 4 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH5

Specifies channel 5 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH6

Specifies channel 6 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH7

Specifies channel 7 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH8

Specifies channel 8 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH9

Specifies channel 9 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH10

Specifies channel 10 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH11

Specifies channel 11 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH12

Specifies channel 12 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH13

Specifies channel 13 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH14

Specifies channel 14 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CH15

Specifies channel 15 as the channel on which the digitizer is to receive input data. INFO

g
Click to summarize M_CHANNEL_NUM

Inquires the number of available channels on the digitizer.

(summarize)
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M10
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
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Click to summarize Value

Specifies the number of channels.

(summarize)
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MIL system specific

Matrox Iris GT has 1 channel.

t
U28
Click to summarize M_CHANNEL_SYNC

Inquires the channel currently being used as a synchronization channel instead of a data channel. Note that using a digitizer as an external synchronization signal renders the digitizer of that signal "occupied" and not available for allocating as a digitizer.

(summarize)
g h i l o u
U36
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT64
g h i l o u
U36
Click to summarize M_CHn

Specifies the channel used for synchronization, where n is the channel number.

g h i l o u
U36
Click to summarize M_COMMAND_QUEUE_MODE

Inquires whether changes to digitizer settings affect the grab digitizer immediately, even if it is currently being used in a grab, or the change will wait until the current grab is complete. SET

(summarize)
j k
M10
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U27
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
j k
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Click to summarize M_IMMEDIATE

Specifies that, if you change the setting of a control type of a digitizer currently being used in a grab, the change affects the current grab. INFO

j k
M10
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U27
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Click to summarize M_QUEUED

Specifies that, if you change the setting of a control type of a digitizer currently being used in a grab, the change does not affect the current grab. INFO

j k
M10
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U27
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Click to summarize M_CORRUPTED_FRAME_ERROR

Inquires whether an error is generated when a corrupted or incomplete frame is grabbed. SET

(summarize)
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M10
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
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Click to summarize M_DISABLE

Specifies not to generate an error when grabbing a corrupted frame.

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Click to summarize M_ENABLE

Specifies to generate an error when grabbing a corrupted frame.

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Click to summarize M_DIG_PROCESS_IN_PROGRESS

Inquires whether MdigProcess() is currently running.

(summarize)
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
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Click to summarize M_FALSE

MdigProcess() is not running.

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Click to summarize M_TRUE

MdigProcess() is running.

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Click to summarize M_DIGITIZER_INTERNAL_BUFFERS_NUM

Inquires the number of internal grab buffers allocated and used when MIL cannot grab directly into the specified buffers. SET

(summarize)
c
M10
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
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Click to summarize Value >= 0

Specifies the number of internal grab buffers.

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Click to summarize M_DIGITIZER_TYPE

Inquires the type of frame grabber(s) available to allocate a digitizer on the system.

The type of frame grabber is established by the type of sensor, so this inquire type returns the type of sensor.

(summarize)
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
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Click to summarize M_300

Specifies a Matrox Iris GTR 300.

t
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Click to summarize M_300C

Specifies a Matrox Iris GTR 300C.

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U28
Click to summarize M_1300

Specifies a Matrox Iris GTR 1300.

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Click to summarize M_1300C

Specifies a Matrox Iris GTR 1300C.

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Click to summarize M_2000

Specifies a Matrox Iris GTR 2000.

t
U28
Click to summarize M_2000C

Specifies a Matrox Iris GTR 2000C.

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U28
Click to summarize M_5000

Specifies a Matrox Iris GTR 5000.

t
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Click to summarize M_5000C

Specifies a Matrox Iris GTR 5000C.

t
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Click to summarize M_EXTENDED_INIT_FLAG

Inquires the digitizer initialization flag. SET

(summarize)
a c
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Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT64
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Click to summarize M_DEFAULT

Specifies the default value. INFO

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Click to summarize M_DEV_NUMBER +

Specifies that the digitizer was allocated for the camera with the specified device number. INFO

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Click to summarize M_EMULATED

Specifies that the digitizer was allocated as a simulated digitizer.

a
Click to summarize M_GC_DEVICE_IP_ADDRESS +

Specifies that the digitizer was allocated for theMdigAlloc. INFO

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M10
v
Click to summarize M_GC_DEVICE_NAME +

Specifies that the digitizer was allocated for the camera with the specified device's user name. INFO

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Click to summarize M_MINIMAL

Specifies that grabbing is not permitted with the allocated digitizer. INFO

i u
U36
Click to summarize M_FIX_PATTERN_NOISE_CORRECTION

Inquires the type of fixed pattern noise correction to apply when acquiring images. SET

(summarize)
t
U28
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
t
U28
Click to summarize M_PREPROCESSING

Specifies a correction for dark signal non-uniformity and for photo response non-uniformity, applied to the grabbed images. INFO

t
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Click to summarize M_SENSOR

Specifies a correction for dark signal non-uniformity, applied to the grabbed images. INFO

t
U28
Click to summarize M_FOCUS +

Inquires the lens focus capabilities.

Note that this inquire type requires that your Matrox Iris GTR use an I 2 C (inter-integrated circuit) controlled lens. SET

(summarize)
t
U28
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
t
U28
Click to summarize Min. focus <= Value <= Max. focus

Specifies a value between the minimum and maximum values supported by the camera. INFO

t
U28
Click to summarize M_FOCUS_PERSISTENCE

Sets whether to store a focus position for the I 2 C (inter-integrated circuit) controlled lens. If there is no I 2 C (inter-integrated circuit) controlled lens attached, the value is ignored. SET

(summarize)
t
U28
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
t
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Click to summarize M_DISABLE

Specifies to not store the focus position.

t
U28
Click to summarize M_ENABLE

Specifies to store the focus position.

t
U28
Click to summarize M_FOCUS_PERSISTENT_VALUE

Inquires the focus position to store for the I 2 C (inter-integrated circuit) controlled lens. SET

(summarize)
t
U28
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_INT
t
U28
Click to summarize 0 <= Value <= 1023

Specifies to store the focus position.

t
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Click to summarize M_FORMAT +

Inquires the digitizer data format. SET

(summarize)
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Data type info: Data type: array of type MIL_TEXT_CHAR [optionally, in C++: MIL_STRING ] MORE
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U75
aa
Click to summarize M_NULL
//For monochrome or color cameras.

Specifies the data format is set by the digitizer allocated as the multicast master. INFO

c
M10
v
Click to summarize MIL_TEXT("DCF File name") 1
//For monochrome or color cameras.

Specifies the path and file name of the DCF (for example: "C:\mydirectory\myfile"). INFO

c
M10
g h i j k
M10
l m o p r
U27
t
U28
u
U36
v y
U75
aa
Click to summarize MIL_TEXT("M_CCIR") 1
//For monochrome cameras.

Specifies a DCF for a CCIR, 768x576, 14.75 MHz, analog camera.

g h l
Click to summarize MIL_TEXT("M_DEFAULT") 1
//For monochrome or color cameras.

Specifies the default digitizer format. INFO

a c
M10
g h i j k
M10
l m o p r
U27
t
U28
u
U36
v y
U75
aa
Click to summarize MIL_TEXT("M_NTSC") 1
//For color cameras.

Specifies a DCF for a composite NTSC 640x480, 12.27 MHz camera.

g h
Click to summarize MIL_TEXT("M_NTSC_RGB") 1
//For color cameras.

Specifies a DCF for a component RGB, 640x480, 12.27 MHz camera. INFO

l
Click to summarize MIL_TEXT("M_NTSC_YC") 1
//For color cameras.

Specifies a DCF for a component NTSC Y/C (SVHS), 640x480, 12.27 MHz camera.

g
Click to summarize MIL_TEXT("M_PAL") 1
//For color cameras.

Specifies a DCF for a composite PAL 768x576, 14.75 MHz camera.

g h
Click to summarize MIL_TEXT("M_PAL_RGB") 1
//For color cameras.

Specifies a DCF for a component RGB, 768x576, 14.75 MHz camera. INFO

l
Click to summarize MIL_TEXT("M_PAL_YC") 1
//For color cameras.

Specifies a DCF for a PAL Y/C, 768x576, 14.75 MHz camera.

g
Click to summarize MIL_TEXT("M_RS170") 1
//For monochrome cameras.

Specifies a DCF for an RS-170, 640x480, 12.27 MHz, analog camera.

g h l
Click to summarize M_FORMAT_DETECTED +

Inquires the detected DCF name.

(summarize)
i u
U36
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: array of type MIL_TEXT_CHAR [optionally, in C++: MIL_STRING ] MORE
i u
U36
Click to summarize Value

Specifies the detected DCF name.

i u
U36
Click to summarize M_GC_CAMERA_TIME_STAMP

Inquires the timestamp from the camera.

To inquire the timestamp of an event, use MdigGetHookInfo() with M_GC_CAMERA_TIME_STAMP.

(summarize)
c
U25
v
Expand data type infoCollapse data type info UserVarPtr extra info
Data type info: Data type: address of a MIL_DOUBLE
c
U25
v