# qtiqmmfsrc Source: [https://docs.qualcomm.com/doc/80-70015-50/topic/qtiqmmfsrc.html](https://docs.qualcomm.com/doc/80-70015-50/topic/qtiqmmfsrc.html) The qtiqmmfsrc plugin captures the video frames through Qualcomm Camera Service. The plugin consists of the main class called GstQtiQmmfSrc that acts as a wrapper on top of the Qualcomm multimedia framework (QMMF) recorder client with separate pads for video and image streams. - The pads store the creation time parameters (passed as GstCaps during pipeline creation) for the particular stream. - The GstQtiQmmfSrc takes that information, translates it to the QMMF recorder client parameters and calls the necessary APIs on each state transition of the element. - For video and image pads, the camera device ID, which is used for this instance of the plugin can be set through the *camera* property (by default this ID is 0). The following are the transition states of the plugin: - During the transition between the NULL and READY states, the plugin opens and initializes the camera device with the given ID. - When transitioning to PAUSED state from READY, the plugin translates the set pad parameters and makes calls to the QMMF service to create the source streams for each pad. - The session streams are started when transition is done to the PLAYING state. When the plugin receives a frame in the main class, it creates a GstBuffer and sends it to the relevant pad buffer queue. The pad pushes the buffer to its linked sink pad from the next plugin. The QMMF service does the following: - It allocates buffers. The plugin returns the buffers to the service when they are no longer in use. - For video, the QMMF service sends the buffers when the plugin state is PLAYING. - For image pad, a *capture-image* signal must be sent. For each capture-image, a single buffer is sent from the QMMF service. ## Inheritance chain [GObject](https://docs.gtk.org/gobject/) → [GstObject](https://gstreamer.freedesktop.org/documentation/gstreamer/gstobject.html?gi-language=c) → [GstElement](https://gstreamer.freedesktop.org/documentation/gstreamer/gstelement.html?gi-language=c) → GstQmmfSrc The following tables provide information on pad templates and element properties of qtiqmmfsrc. For use cases, see [Camera](https://docs.qualcomm.com/doc/80-70015-50/topic/camera.html). ## Pad configuration | Pad Name | Capabilities | Capabilities | Capabilities | | --- | --- | --- | --- | | SRC template: 'image\_%u'

Availability: On request

Direction: source

| image/jpeg |

width:

height:

framerate:

| [ 16, 4096 ]

[ 16, 4096 ]

[ 0/1, 30/1 ] | | SRC template: 'image\_%u'

Availability: On request

Direction: source

| video/x-raw | format:

width:

height:

framerate: | { (string)NV12, (string)NV21 }

[ 16, 4096 ]

[ 16, 4096 ]

[ 0/1, 30/1 ] | | SRC template: 'image\_%u'

Availability: On request

Direction: source

| video/x-raw(memory:GBM) | format:

width:

height:

framerate: | { (string)NV12, (string)NV21 }

[ 16, 4096 ]

[ 16, 4096 ]

[ 0/1, 30/1 ] | | SRC template: 'image\_%u'

Availability: On request

Direction: source

| video/x-bayer | format:

bpp:

width:

height:

framerate: | { (string)bggr, (string)rggb, (string)gbrg, (string)grbg,
(string)mono }

{ (string)8, (string)10, (string)12, (string)16 }

[ 16, 4096 ]

[ 16, 4096 ]

[ 0/1, 30/1 ] | | SRC template: 'video\_%u'

Availability: On request

Direction: source

Availability: On request

Direction: source

| video/x-raw | format:

width:

height:

framerate: | { (string)NV12, (string)NV16, (string)YUY2 }

[ 16, 4096 ]

[ 16, 4096 ]

[ 0/1, 120/1 ] | | SRC template: 'video\_%u'

Availability: On request

Direction: source

| video/x-raw(memory:GBM) | format:

width:

height:

framerate: | { (string)NV12, (string)YUY2 }

[ 16, 4096 ]

[ 16, 4096 ]

[ 0/1, 120/1 ] | | SRC template: 'video\_%u'

Availability: On request

Direction: source

| video/x-bayer | format:

bpp:

width:

height:

framerate: | (string)bggr, (string)rggb, (string)gbrg, (string)grbg,
(string)mono }

{ (string)8, (string)10, (string)12, (string)16 }

[ 16, 4096 ]

[ 16, 4096 ]

[ 0/1, 120/1 ] | | | | | | | | | | | | | | | | | Pad | Property | Description | | --- | --- | --- | | 'image\_%u' | mode | Different image mode.

flags: readable, writable, changeable only in NULL or READY
state

Enum "GstImageMode" Default: 0, "video"
- (0): video - Video snapshot is captured with video
  settings. Video recording is not interrupted in this
  mode
- (1): continuous - Continuously capture images at the
  set frame rate in the capabilities.

| | 'video\_%u' | source-index | Index of the source video pad to which this pad is linked.

flags: readable, writable, changeable only in NULL or READY
state

Integer. Range: -1 - 2147483647 Default: -1

| | 'video\_%u' | framerate | Target framerate in frames per second for display.

flags: readable, writable, changeable in NULL, READY,
PAUSED, or PLAYING state

Double. Range: 0 - 30; default: 30

| | 'video\_%u' | crop | Crop rectangle ('<X, Y, WIDTH, HEIGHT>'). Applicable only for
JPEG and YUY2 formats.

flags: readable, writable, changeable in NULL, READY,
PAUSED, or PLAYING state

GstValueArray of GValues of type "gint"

| | 'video\_%u' | extra-buffers | Number of additional buffers that are allocated.

flags: readable, writable, changeable only in NULL or READY
state

Unsigned Integer.
Range: 0 - 4294967295; default:
0

| | 'video\_%u' | type | The type of the stream.

flags: readable, writable, changeable in NULL, READY,
PAUSED, or PLAYING state

Enum "GstQmmfSrcStreamType" Default: 0, "video"
- (0): video - The stream is configured with tunings
  and settings most fitted for directly encoding the
  buffers.
- (1): preview - The stream is configured with tunings
  and settings most fitted for directly visualizing
  the buffers.

| | | | | | | | | | | | | | | | | ## Element configuration Table : Element properties of qtiqmmfsrc | Property | Description | | --- | --- | | name | The name of the object.

flags: readable, writable

String. Default: "qmmfsrc0"

| | parent | The parent of the object.

flags: readable, writable

Object of type "GstObject"

| | camera | The camera device ID to be used by video/image pads.

flags: readable, writable

Unsigned Integer. Range: 0 - 10 Default: 0

| | slave | Set the camera as the slave device.

flags: readable, writable

Boolean. Default: false

| | ldc | Lens distortion correction.

flags: readable, writable

Boolean. Default: false

| | lcac | Lateral chromatic aberration correction.

flags: readable, writable

Boolean. Default: false

| | eis | Electronic image stabilization to reduce the effects of camera
shake.

flags: readable, writable

Boolean. Default: false

| | shdr | Super high dynamic range imaging.

flags: readable, writable

Boolean. Default: false

| | adrc | Automatic dynamic range compression.

flags: readable, writable

Boolean. Default: false

| | control-mode | Overall mode of auto-exposure, auto-white-balance, auto-focus
(also known as 3A) control routines.
This is a top-level 3A
control switch. When set to OFF, 3A controlled by the camera
device is disabled.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraControlMode" Default: 1, "auto"
- (0): off - Full application control of
  pipeline
- (1): auto - Manual control of capture parameters is
  disabled
- (2): use-scene-mode - Use a specific scene
  mode
- (3): off-keep-state - Same as OFF mode, except that
  this capture is not used by camera device background
  3A to update their statistics.

| | effect | Effect applied on the camera frames.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraEffectMode" Default: 0, "off"
- (0): off - No color effect is applied.
- (1): mono - A 'monocolor' effect where the image is
  mapped into a single color.
- (2): negative - A 'photo-negative' effect where the
  image colors are inverted.
- (3): solarize - A 'solarisation' effect (Sabattier
  effect) where the image is wholly or partially
  reversed in tone.
- (4): sepia - A 'sepia' effect where the image is
  mapped into warm gray, red, and brown tones.
- (5): posterize - A 'posterization' effect where the
  image uses discrete regions of tone rather than a
  continuous gradient of tones.
- (6): whiteboard - A 'whiteboard' effect where the
  image is typically displayed as regions of white,
  with black, or grey details.
- (7): blackboard - A 'blackboard' effect where the
  image is typically displayed as regions of black,
  with white, or grey details.
- (8): aqua - An 'aqua' effect where a blue hue is
  added to the image.

| | scene | Camera optimizations depending on the scene.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraSceneMode" Default: 1, "face-priority"
- (0): disabled - Indicates that no scene modes are
  set
- (1): face-priority - Optimized for photos of with
  priority of people faces
- (2): action - Optimized for photos of quickly
  moving objects.
- (3): portrait - Optimized for still photos of
  people
- (4): landscape - Optimized for photos of distant
  macroscopic objects
- (5): night - Optimized for low-light settings
- (6): night-portrait - Optimized for still photos of
  people in low-light settings
- (7): theatre - Optimized for dim, indoor settings
  where flash must remain off
- (8): beach - Optimized for bright, outdoor beach
  settings
- (9): snow - Optimized for bright, outdoor settings
  containing snow
- (10): sunset - Optimized for scenes of the setting
  sun
- (11): steady-photo - Optimized to avoid blurry
  photos due to small amounts of device motion (for
  example: due to hand shake)
- (12): fireworks - Optimized for nighttime photos of
  fireworks
- (13): sports - Optimized for photos of quickly
  moving people
- (14): party - Optimized for dim, indoor settings
  with multiple moving people
- (15): candlelight - Optimized for dim settings
  where the main light source is a candle
- (16): hdr - Turn on a device-specific high dynamic
  range (HDR) mode

| | antibanding | Camera antibanding routine for the current illumination
condition.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstAntibandingMode" Default: 3, "auto"
- (0): off - The camera device does not adjust
  exposure duration to avoid banding problems
- (1): 50 Hz - The camera device adjusts exposure
  duration to avoid banding problems with 50 Hz
  illumination sources
- (2): 60 Hz - The camera device adjusts exposure
  duration to avoid banding problems with 60 Hz
  illumination sources
- (3): auto - The camera device automatically adapts
  its antibanding routine to the current illumination
  condition

| | sharpness | Image sharpness strength.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Integer. Range: 0 - 6; default: 2

| | contrast | Image contrast strength.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Integer. Range: 1 - 10; default: 5

| | saturation | Image saturation strength.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Integer. Range: 0 - 10 Default: 5

| | iso-mode | ISO exposure mode.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraISOMode" Default: 0, "auto"
- (0): auto - The chosen ISO exposure mode depending
  on the scene
- (1): deblur - The ISO exposure sensitivity set to
  prioritize motion deblur
- (2): 100 - The ISO exposure sensitivity set to
  prioritize level 100
- (3): 200 - The ISO exposure sensitivity set to
  prioritize level 200
- (4): 400 - The ISO exposure sensitivity set to
  prioritize level 400
- (5): 800 - The ISO exposure sensitivity set to
  prioritize level 800
- (6): 1600 - The ISO exposure sensitivity set to
  prioritize level 1600
- (7): 3200 - The ISO exposure sensitivity set to
  prioritize level 3200
- (8): manual - The ISO exposure value provided by
  manual-iso-value is used

| | manual-iso-value | Manual exposure ISO value. Used when the ISO mode is set to
'manual'.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Integer. Range: 100 - 3200 Default: 800

| | exposure-mode | The required mode for the camera exposure routine.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraExposureMode" Default: 1, "auto"
- (0): off - The auto exposure routine is disabled.
  Manual exposure time is used to set the
  'exposure-time' property
- (1): auto - The auto exposure routine is
  active

| | exposure-lock | Locks current camera exposure routine values from changing.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Boolean. Default: false

| | exposure-metering | The required mode for the camera exposure metering routine.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraExposureMetering" Default: 0, "average"
- (0): average - The camera exposure metering is
  calculated as average from the whole frame.
- (1): center-weighted - The camera exposure metering
  is calculated from the center region of the
  frame.
- (2): spot - The camera exposure metering is
  calculated from a chosen spot.
- (6): custom - The camera exposure metering is
  calculated from a custom metering table.

| | exposure-compensation | Adjust (Compensate) camera images target brightness. Adjustment
is measured as a count of steps.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Integer. Range: -12 - 12 Default: 0

| | manual-exposure-time | Manual exposure time in nanoseconds. Used when the Exposure mode
is set to 'off'.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Integer64. Range: 0 - 9223372036854775807 Default:
33333333

| | custom-exposure-table | A GstStructure describing custom exposure table.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

String. Default:
"org.codeaurora.qcamera3.exposuretable;"

| | white-balance-mode | The mode for the camera's white balance routine.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraWiteBalanceMode" Default: 3, "auto"
- (0): off - Both auto and manual white balance
  routines are disabled
- (1): manual-cc-temp - The auto-white balance
  routine is inactive and manual color correction
  temperature is used which is set via the
  'manual-wb-settings' property
- (2): manual-rgb-gains - The auto-white balance
  routine is inactive and manual R/G/B gains are used
  which are set via the 'manual-wb-settings'
  property
- (3): auto - The auto-white balance routine is
  active
- (4): shade - The camera device uses shade light as
  the assumed scene illumination for white balance
  correction
- (5): incandescent - The camera device uses
  incandescent light as the assumed scene illumination
  for white balance correction
- (6): fluorescent - The camera device uses
  fluorescent light as the assumed scene illumination
  for white balance correction
- (7): warm-fluorescent - The camera device uses warm
  fluorescent light as the assumed scene illumination
  for white balance correction
- (8): daylight - The camera device uses daylight
  light as the assumed scene illumination for white
  balance correction
- (9): cloudy-daylight - The camera device uses
  cloudy daylight light as the assumed scene
  illumination for white balance correction
- (10): twilight - The camera device uses twilight
  light as the assumed scene illumination for white
  balance correction

| | white-balance-lock | Locks current White Balance values from changing. Affects only
non-manual white balance modes.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Boolean. Default: false

| | manual-wb-settings | Manual White Balance settings such as color correction
temperature and R/G/B gains. Used in manual white balance modes.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

String. Default: "org.codeaurora.qcamera3.manualWB;"

| | focus-mode | Indicates whether auto-focus is enabled along with its mode.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraFocusMode" Default: 0, "off"
- (0): off - The auto focus routine is disabled
- (1): auto - The auto focus routine is active
- (2): macro - In this mode, the auto focus algorithm
  is optimized for focusing on objects very close to
  the camera
- (3): continuous - In this mode, the AF algorithm
  modifies the lens position continually to attempt to
  provide a constantly-in-focus image stream
- (4): edof - The camera device produces images with
  an extended depth of field automatically; no special
  focusing operations must be done before taking a
  picture

| | noise-reduction | Noise reduction filter mode.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraNoiseReduction" Default: 1, "fast"
- (0): off - No noise reduction filter is
  applied.
- (1): fast - TNR (Temporal Noise Reduction) Fast
  Mode
- (2): hq - TNR (Temporal Noise Reduction) High
  Quality Mode

| | noise-reduction-tuning | A GstStructure describing the noise reduction tuning.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

String. Default: "org.quic.camera.anr_tuning;"

| | zoom | Camera zoom rectangle ('<X, Y, WIDTH, HEIGHT >') in sensor
active pixel array coordinates.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

GstValueArray of GValues of type "gint"

| | defog-table | A GstStructure describing defog table.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

String. Default: "org.quic.camera.defog;"

| | ltm-data | A GstStructure describing local tone mapping data.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

String. Default: "org.quic.camera.ltmDynamicContrast;"

| | infrared-mode | Infrared mode.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Enum "GstCameraIRMode" Default: 0, "off"
- (0): off - The infrared LED is OFF and cut filter
  is applied, that is, infrared light is blocked.
- (1): on - The infrared LED is ON and cut filter is
  removed, that is, infrared light is allowed.
- (2): auto - The infrared LED and cut filter are
  turned ON or OFF depending on the conditions.
- (3): cut-filter-only - The infrared LED is turned
  OFF and cut filter is applied, that is, IR light is
  blocked.
- (4): cut-filter-disable - Infrared cut filter is
  removed allowing IR light to pass. This mode is used
  for transitioning from 'cut-filter-only' mode, that
  is, disabling only the cut filter.

| | active-sensor-size | The active pixel array of the camera sensor ('<X, Y, WIDTH,
HEIGHT >') and it is filled only when the plugin is in READY or
above state.

flags: readable, changeable in NULL, READY, PAUSED or
PLAYING state

GstValueArray of GValues of type "gint"

| | sensor-mode | Force set Sensor Mode index (0-15). -1 for Auto selection.

flags: readable, writable

Integer. Range: -1 - 15 Default: -1

| | capture-metadata | Expose camera metadata object that is used for camera control. If
the get property is used, caller must release metadata object.

flags: readable, writable, changeable in NULL, READY, PAUSED
or PLAYING state

Pointer

| | camera-characteristics | Returns supported values for camera parameters as camera metadata
object. The caller should take ownership and release the
metadata object.

flags: readable, changeable in NULL, READY, PAUSED or
PLAYING state

Pointer

| Table : Element signals for qtiqmmfsrc | Signal | Function | | --- | --- | | result-metadata | `void user_function (GstElement* object, gpointer arg0,
gpointer user_data);` | | urgent-metadata | `void user_function (GstElement* object, gpointer arg0,
gpointer user_data);` | **Parent Topic:** [Display, camera, encode and decode plugins](https://docs.qualcomm.com/doc/80-70015-50/topic/display-plugins.html) Last Published: Oct 27, 2025 [Previous Topic Display, camera, encode and decode plugins](https://docs.qualcomm.com/bundle/publicresource/80-70015-50/topics/display-plugins.md) [Next Topic qtivcomposer](https://docs.qualcomm.com/bundle/publicresource/80-70015-50/topics/qtivcomposer.md)