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Mv series camera appnotes 4 jetson (view source)

Revision as of 12:07, 19 May 2022

5,666 bytes added ,  12:07, 19 May 2022
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Also, we provide tool software in order to convert these special data formats to standard formats: https://github.com/veyeimaging/pixel_layer_convert.
 
Also, we provide tool software in order to convert these special data formats to standard formats: https://github.com/veyeimaging/pixel_layer_convert.
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We recommend using [https://www.offminor.de/ vooya] as the player.
    
===== Support for trigger mode =====
 
===== Support for trigger mode =====
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In gstreamer, v4l2src can access different cameras by specifying device=/dev/videoX.
 
In gstreamer, v4l2src can access different cameras by specifying device=/dev/videoX.
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=== v4l2-ctl Application Examples ===
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=====Install v4l2-utils=====
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<code>sudo apt-get install v4l-utils</code>
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=====Install yavta=====
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<code>git clone <nowiki>git://git.ideasonboard.org/yavta.git</nowiki></code>
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<code>cd yavta;make</code>
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=====Configure parameters using v4l2-ctl=====
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======List the data formats supported by the camera======
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<code>v4l2-ctl --list-formats-ext</code>
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The following is an example in the XAVIER system：
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<code>ioctl: VIDIOC_ENUM_FMT</code>
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<code>        Index       : 0</code>
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<code>        Type        : Video Capture</code>
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<code>        Pixel Format: 'UYVY'</code>
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<code>        Name        : UYVY 4:2:2</code>
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<code>                Size: Discrete 3088x2064</code>
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<code>                        Interval: Discrete 0.045s (22.000 fps)</code>
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<code>        Index       : 1</code>
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<code>        Type        : Video Capture</code>
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<code>        Pixel Format: 'NV16'</code>
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<code>        Name        : Y/CbCr 4:2:2</code>
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<code>                Size: Discrete 3088x2064</code>
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<code>                        Interval: Discrete 0.045s (22.000 fps)</code>
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<code>        Index       : 2</code>
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<code>        Type        : Video Capture</code>
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<code>        Pixel Format: 'GREY'</code>
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<code>        Name        : 8-bit Greyscale</code>
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<code>                Size: Discrete 3088x2064</code>
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<code>                        Interval: Discrete 0.045s (22.000 fps)</code>
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<code>        Index       : 3</code>
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<code>        Type        : Video Capture</code>
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<code>        Pixel Format: 'XY10'</code>
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<code>        Name        : XAVIER 10-bit/16-bit Greyscale</code>
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<code>                Size: Discrete 3088x2064</code>
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<code>                        Interval: Discrete 0.045s (22.000 fps)</code>
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<code>        Index       : 4</code>
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<code>        Type        : Video Capture</code>
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<code>        Pixel Format: 'XY12'</code>
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<code>        Name        : XAVIER 12-bit/16-bit Greyscale</code>
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<code>                Size: Discrete 3088x2064</code>
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                        <code>Interval: Discrete 0.045s (22.000 fps)</code>
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It should be noted that the UYVY and NV16 modes provided by the MV series cameras are for debugging purposes only and the maximum width cannot exceed 2880.
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====== List the configurable parameters of the camera implemented in the driver ======
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<code>v4l2-ctl -L</code>
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<code>User Controls</code>
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<code>                horizontal_flip 0x00980914 (bool)   : default=0 value=0</code>
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<code>                  vertical_flip 0x00980915 (bool)   : default=0 value=0</code>
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<code>                   trigger_mode 0x00981901 (int)    : min=0 max=2 step=1 default=0 value=0 flags=volatile, execute-on-write</code>
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<code>                    trigger_src 0x00981902 (int)    : min=0 max=1 step=1 default=1 value=1 flags=volatile, execute-on-write</code>
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<code>                    soft_trgone 0x00981903 (button) : flags=write-only, execute-on-write</code>
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<code>                     frame_rate 0x00981904 (int)    : min=1 max=22 step=1 default=22 value=22 flags=volatile, execute-on-write</code>
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<code>                          roi_x 0x00981905 (int)    : min=0 max=2712 step=8 default=0 value=0</code>
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<code>                          roi_y 0x00981906 (int)    : min=0 max=1744 step=4 default=0 value=0</code>
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<code>Camera Controls</code>
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<code>low_latency_mode 0x009a206d (bool)   : default=0 value=0</code>
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<code>               preferred_stride 0x009a206e (int)    : min=0 max=65535 step=1 default=0 value=0</code>
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<code>            vi_time_out_disable 0x009a2078 (bool)   : default=0 value=0</code>
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Parameters can be set and get using the following methods.
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<code>v4l2-ctl --set-ctrl [ctrl_type]=[val]</code>
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<code>v4l2-ctl --get-ctrl [ctrl_type]</code>
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All the above functions can be implemented using [http://wiki.veye.cc/index.php/Mv_mipi_i2c.sh_user_guide mv_mipi_i2c.sh].
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None of the above parameters can be modified in the state when the image acquisition is started.
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Each of them is described below:
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======horizontal and <small>vertical</small> flip======
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*horizontal flip
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<code>v4l2-ctl --set-ctrl horizontal_flip=1</code>
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*<small>vertical flip</small>
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<code>v4l2-ctl --set-ctrl <small>vertical_flip</small>=1</code>
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======Trigger Mode======
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<code>v4l2-ctl --set-ctrl <small>trigger_mode=[0-2]</small></code>
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0：Video streaming mode
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1：Normal trigger mode.
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2：High-speed continuous trigger mode.
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======Trigger Source======
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<code>v4l2-ctl --set-ctrl <small>trigger_src=[0-1]</small></code>
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0: Software trigger mode.
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1: Hardware trigger mode.
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======Software trigger command======
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<code>v4l2-ctl --set-ctrl <small>soft_trgone=1</small></code>
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======Set frame rate======
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<code>v4l2-ctl --set-ctrl frame_rate=[1-max]</code>
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The maximum frame rate is automatically updated as the resolution changed.
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======Set ROI and pixel format======
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For example, for MV-MIPI-IMX178M:
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<code>v4l2-ctl --set-ctrl roi_x=0</code>
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<code>v4l2-ctl --set-ctrl roi_y=0</code>
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<code>v4l2-ctl --set-fmt-video=width=3088,height=2064,pixelformat=GREY</code>
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The maximum frame rate will be adjusted automatically after setting ROI. Please note that the camera roi parameters need to comply with the requirements in the camera manual.
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====== preferred_stride ======
 
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Retrieved from "http://wiki.veye.cc/index.php/Special:MobileDiff/5475"

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