Latest revision as of 21:20, 11 April 2024

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DART-MX8M Camera

Testing MIPI-CSI2 cameras

Before running any of the pipelines below make sure you have camera(s) connected. i.MX family of processors uses gstreamer as multimedia framework. Please refer to https://gstreamer.freedesktop.org/

Camera Probe

Run the following command to see if you have the camera(s) detected

# v4l2-ctl --list-devices

This should produce the following output

# v4l2-ctl --list-devices
i.MX6S_CSI (platform:30a90000.csi1_bridge):
      /dev/video0

i.MX6S_CSI (platform:30b80000.csi2_bridge):
      /dev/video1

As you can see above there are 2 cameras accessible as /dev/video0 and /dev/video1

Testing Camera Preview on Display

In the examples below /dev/videoX is either /dev/video0 or /dev/video1

VGA 480p 640x480@30fps:

# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=640,height=480 ! autovideosink sync=false

NTSC 480p 720x480@30fps:

# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=720,height=480 ! autovideosink sync=false

HD 720p 1280x720@30fps:

# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=1280,height=720 ! autovideosink sync=false

Full HD 1080p 1920x1080@30fps:

# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=1920,height=1080 ! autovideosink sync=false

QSXGA 1944p 2592x1944@15fps:

# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false

Testing Camera JPEG Snapshot

To capture JPEG snapshot run one of the pipelines below depending upon the required picture resolution.

In the examples below /dev/videoX is either /dev/video0 or /dev/video1

VGA 480p 640x480:

# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=640,height=480 ! jpegenc ! filesink location=/tmp/test_640x480.jpg

NTSC 480p 720x480:

# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=720,height=480 ! jpegenc ! filesink location=/tmp/test_720x480.jpg

HD 720p 1280x720:

# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=1280,height=720 ! jpegenc ! filesink location=/tmp/test_1280x720.jpg

Full HD 1080p 1920x1080:

# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=1920,height=1080 ! jpegenc ! filesink location=/tmp/test_1920x1080.jpg

QSXGA 1944p 2592x1944:

# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=2592,height=1944 ! jpegenc ! filesink location=/tmp/test_2592x1944.jpg

Using both cameras simultaneously

The following pipeline is an example of using both cameras simultaneously.
In this example a short video stream from each camera is saved as an MJPEG-encoded AVI file.

# gst-launch-1.0 v4l2src device=/dev/video0 num-buffers=100 ! video/x-raw,width=1920,height=1080 ! jpegenc ! avimux ! filesink location=./test0.avi \
                 v4l2src device=/dev/video1 num-buffers=100 ! video/x-raw,width=1920,height=1080 ! jpegenc ! avimux ! filesink location=./test1.avi

@@ Line 1: / Line 1: @@
 <!-- Set release according to "release" parameter in URL and use RELEASE_SUMO_V1.0_DART-MX8M as default
---> {{#vardefine:RELEASE_PARAM|{{#urlget:release|RELEASE_SUMO_V1.0_DART-MX8M}}}} <!--
+--> {{INIT_RELEASE_PARAM|RELEASE_SUMO_V1.0_DART-MX8M}}<!--
 --> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
 --> {{#lst:B2QT_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
---> {{PageHeader|{{#var:HARDWARE_NAME}} Camera}} {{DocImage|category1=Yocto|category2={{#var:HARDWARE_NAME}}}} __toc__
+--> {{#lst:Debian_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
+!-- Set local variables
+--> {{#vardefine:VIDEO_DEV | <!--
+-->    {{#switch:{{#var:HARDWARE_NAME}} | <!--
+-->       DART-MX8M = videoX | <!--
+-->       DART-MX8M-PLUS = videoX | <!--
+-->       VAR-SOM-MX8 = videoX | <!--
+-->       video0 <!--
+-->    }} <!--
+--> }} <!--
+--> {{#vardefine:VIDEO_DEV_STR | <!--
+-->    {{#switch:{{#var:HARDWARE_NAME}} | <!--
+-->       DART-MX8M = In the examples below /dev/videoX is either /dev/video0 or /dev/video1 | <!--
+-->       DART-MX8M-PLUS = In the examples below /dev/videoX is either /dev/video1 or /dev/video2 | <!--
+-->       VAR-SOM-MX8 = In the examples below /dev/videoX is either /dev/video0 or /dev/video1 | <!--
+-->         <!--
+-->    }} <!--
+--> }} <!--
+--> {{PageHeader|{{#var:HARDWARE_NAME}} Camera}} {{DocImage|category1=Yocto|category2=Debian}} [[Category:{{#var:HARDWARE_NAME}}]] __toc__
 = Testing MIPI-CSI2 cameras =
 Before running any of the pipelines below make sure you have camera(s) connected. i.MX family of processors uses gstreamer as multimedia framework.
 Please refer to https://gstreamer.freedesktop.org/
+{{#varexists:DEBIAN_NAME|
+== Install Utils ==
+Run the following command to install v4l-utils:
+ # apt-get clean; apt-get update; apt-get install -y v4l-utils
+}}
 == Camera Probe ==
@@ Line 40: / Line 64: @@
 </pre>
 As you can see above there are 2 cameras accessible as /dev/video1 and /dev/video2
+| {{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX93 |
+<pre>
+# v4l2-ctl --list-devices
+FSL Capture Media Device (platform:42800000.bus:camera):
+	/dev/media0
+mxc-isi-cap (platform:4ae40000.isi:cap_devic):
+	/dev/video0
+</pre>
+As you can see above there is 1 camera accessible as /dev/video0
 |
 <pre>
@@ Line 47: / Line 81: @@
 </pre>
 As you can see above there is 1 camera accessible as /dev/video0
-}}}}
+}}}}}}
 == Testing Camera Preview on Display ==
-{{#vardefine:USE_KMSSINK}}
+{{#var:VIDEO_DEV_STR}}
-{{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M |
-In the examples below /dev/videoX is either /dev/video0 or /dev/video1
-* 480P 640x480@30fps:
+{{#varexists:USE_KMSSINK |
-  # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=640,height=480 ! autovideosink sync=false
+{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX8M-NANO |
+* HD 720p 1280x720@30fps:
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! video/x-raw,width=1280,height=720 ! kmssink sync=false can-scale=false
-* NTSC 720x480@30fps:
+* Full HD 1080p 1920x1080@30fps:
-  # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=720,height=480 ! autovideosink sync=false
+ # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! video/x-raw,width=1920,height=1080 ! kmssink sync=false can-scale=false
+|
+* NTSC 480p 720x480@30fps:
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! imxvideoconvert_g2d ! video/x-raw,width=720,height=480 ! kmssink sync=false can-scale=false
-* 720P 1280x720@30fps:
+* HD 720p 1280x720@30fps:
-  # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=1280,height=720 ! autovideosink sync=false
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! imxvideoconvert_g2d ! video/x-raw,width=1280,height=720 ! kmssink sync=false can-scale=false
-* 1080P: 1920x1080@30fps:
+* Full HD 1080p 1920x1080@30fps:
-  # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=1920,height=1080 ! autovideosink sync=false
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! imxvideoconvert_g2d ! video/x-raw,width=1920,height=1080 ! kmssink sync=false can-scale=false
+}}
-* QSXGA 2592x1944@15fps:
- # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false
-| {{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M-PLUS |
-In the examples below /dev/videoX is either /dev/video1 or /dev/video2
-* 480P 640x480@30fps:
- # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=640,height=480 ! autovideosink sync=false
-* NTSC 720x480@30fps:
- # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=720,height=480 ! autovideosink sync=false
-* 720P 1280x720@30fps:
- # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=1280,height=720 ! autovideosink sync=false
-* 1080P: 1920x1080@30fps:
- # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=1920,height=1080 ! autovideosink sync=false
-* QSXGA 2592x1944@15fps:
- # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false
-| {{#varexists:USE_KMSSINK |
-* 800x480@30fps:
- # gst-launch-1.0 v4l2src device=/dev/video0 ! imxvideoconvert_g2d ! video/x-raw,width=800,height=480 ! kmssink sync=false can-scale=false
-* 1280x720@30fps:
- # gst-launch-1.0 v4l2src device=/dev/video0 ! imxvideoconvert_g2d ! video/x-raw,width=1280,height=720 ! kmssink sync=false can-scale=false
-* 1920x1080@30fps:
- # gst-launch-1.0 v4l2src device=/dev/video0 ! imxvideoconvert_g2d ! video/x-raw,width=1920,height=1080 ! kmssink sync=false can-scale=false
- # gst-launch-1.0 v4l2src device=/dev/video0 ! imxvideoconvert_g2d ! kmssink sync=false can-scale=false
 |
-* 480P 640x480@30fps:
+* VGA 480p 640x480@30fps:
-  # gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=640,height=480 ! autovideosink sync=false
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! video/x-raw,width=640,height=480 ! autovideosink sync=false
-* NTSC 720x480@30fps:
+* NTSC 480p 720x480@30fps:
-  # gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=720,height=480 ! autovideosink sync=false
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! video/x-raw,width=720,height=480 ! autovideosink sync=false
-* 720P 1280x720@30fps:
+* HD 720p 1280x720@30fps:
-  # gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=720 ! autovideosink sync=false
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! video/x-raw,width=1280,height=720 ! autovideosink sync=false
-* 1080P: 1920x1080@30fps:
+* Full HD 1080p 1920x1080@30fps:
-  # gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1920,height=1080 ! autovideosink sync=false
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! video/x-raw,width=1920,height=1080 ! autovideosink sync=false
+{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX8M-NANO ||{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX93 ||
-* QSXGA 2592x1944@15fps:
+* QSXGA 1944p 2592x1944@15fps:
-  # gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false
 }}}}}}
 == Testing Camera JPEG Snapshot ==
 To capture JPEG snapshot run one of the pipelines below depending upon the required picture resolution.
-{{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M |
-<br>In the examples below /dev/videoX is either /dev/video0 or /dev/video1
-* 480P 640x480:
+{{#var:VIDEO_DEV_STR}}
- # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=640,height=480   ! jpegenc ! filesink location=/tmp/test.jpg
-* NTSC 720x480:
+* VGA 480p 640x480:
-  # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=720,height=480   ! jpegenc ! filesink location=/tmp/test.jpg
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} num-buffers=1 ! video/x-raw,width=640,height=480 ! jpegenc ! filesink location=/tmp/test_640x480.jpg
-* 720P 1280x720:
+* NTSC 480p 720x480:
-  # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=1280,height=720  ! jpegenc ! filesink location=/tmp/test.jpg
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} num-buffers=1 ! video/x-raw,width=720,height=480 ! jpegenc ! filesink location=/tmp/test_720x480.jpg
-* 1080P 1920x1080:
+* HD 720p 1280x720:
-  # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=1920,height=1080 ! jpegenc ! filesink location=/tmp/test.jpg
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} num-buffers=1 ! video/x-raw,width=1280,height=720 ! jpegenc ! filesink location=/tmp/test_1280x720.jpg
-* QSXGA 2592x1944:
+* Full HD 1080p 1920x1080:
-  # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=2592,height=1944 ! jpegenc ! filesink location=/tmp/test.jpg
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} num-buffers=1 ! video/x-raw,width=1920,height=1080 ! jpegenc ! filesink location=/tmp/test_1920x1080.jpg
-| {{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M-PLUS |
+{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX8M-NANO ||{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX93 ||
-<br>In the examples below /dev/videoX is either /dev/video1 or /dev/video2
+* QSXGA 1944p 2592x1944:
+  # gst-launch-1.0 v4l2src device=/dev/{{#var:VIDEO_DEV}} num-buffers=1 ! video/x-raw,width=2592,height=1944 ! jpegenc ! filesink location=/tmp/test_2592x1944.jpg
-* 480P 640x480:
+}}}}
-  # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=640,height=480   ! jpegenc ! filesink location=/tmp/test.jpg
-* NTSC 720x480:
- # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=720,height=480   ! jpegenc ! filesink location=/tmp/test.jpg
-* 720P 1280x720:
- # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=1280,height=720  ! jpegenc ! filesink location=/tmp/test.jpg
-* 1080P 1920x1080:
- # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=1920,height=1080 ! jpegenc ! filesink location=/tmp/test.jpg
-* QSXGA 2592x1944:
- # gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=2592,height=1944 ! jpegenc ! filesink location=/tmp/test.jpg
-|
-* 480P 640x480:
- # gst-launch-1.0 v4l2src device=/dev/video0 num-buffers=1 ! video/x-raw,width=640,height=480   ! jpegenc ! filesink location=/tmp/test.jpg
-* NTSC 720x480:
- # gst-launch-1.0 v4l2src device=/dev/video0 num-buffers=1 ! video/x-raw,width=720,height=480   ! jpegenc ! filesink location=/tmp/test.jpg
-* 720P 1280x720:
- # gst-launch-1.0 v4l2src device=/dev/video0 num-buffers=1 ! video/x-raw,width=1280,height=720  ! jpegenc ! filesink location=/tmp/test.jpg
-* 1080P 1920x1080:
- # gst-launch-1.0 v4l2src device=/dev/video0 num-buffers=1 ! video/x-raw,width=1920,height=1080 ! jpegenc ! filesink location=/tmp/test.jpg
-* QSXGA 2592x1944:
- # gst-launch-1.0 v4l2src device=/dev/video0 num-buffers=1 ! video/x-raw,width=2592,height=1944 ! jpegenc ! filesink location=/tmp/test.jpg
-}}}}
 {{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M |
 == Using both cameras simultaneously ==

DART-MX8M CSI: Difference between revisions