064c4deb61
* Detailed Informations about V4L2 Control Feature * Added Credit section. Signed-off-by: Stephan Wendel <me@stephanwe.de>
311 lines
11 KiB
Markdown
311 lines
11 KiB
Markdown
# crowsnest
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A webcam daemon for Raspberry Pi OS Lite images like mainsailOS
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---
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## It inherited his name from Sail ships Crow's nest.
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> A crow's nest is a structure in the upper part of the main mast of a ship or a structure that is used as a lookout point.\
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> See https://en.wikipedia.org/wiki/Crow's_nest
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So, this will be the 'lookout point' for your Printer.
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### Install on Raspberry Pi OS
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cd ~
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git clone https://github.com/mainsail-crew/crowsnest.git
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cd crowsnest
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./install.sh
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_This is not tested on other Distributions. If you test that on other Distributions,\
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feel free to open a Pull Request to enhance Documentation._
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After successful Instalation you should consider to add
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[update_manager webcamd]
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type: git_repo
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path: ~/crowsnest
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origin: https://github.com/mainsail-crew/crowsnest.git
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to your moonraker.conf, to get latest and possibly greatest Features.
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### To unsinstall 'crowsnest'
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cd crowsnest
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./uninstall.sh
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###
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## _NOTE: This project has WIP Status! Changes may occure and possibly break things!_
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---
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## Simple Configuration
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---
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All you need to get your Camera up and running is a small block of code in your _webcam.conf_\
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In MainsailOS you can do that in mainsail Web Interface.\
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Open the 'config' section, there should be the mentioned file.
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By default it look like this:
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[webcamd]
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log_path: ~/klipper_logs/webcamd.log
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log_level: quiet
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[cam 1]
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streamer: ustreamer
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port: 8080
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device: /dev/video0
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resolution: 640x480
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max_fps: 15
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What that basicly means is:
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log_path: ~/klipper_logs/webcamd.log
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Where crowsnest (webcamd) should store its Logfile.
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You can choose:
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log_level: quiet
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This Option shows a bare minimum Logfile.\
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For example:
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[11/02/21 20:47:52] webcamd: webcamd - A webcam Service for multiple Cams and Stream Services.
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[11/02/21 20:47:53] webcamd: Version: v0.1.3-9-g7e278cd
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[11/02/21 20:47:53] webcamd: Prepare Startup ...
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[11/02/21 20:47:53] webcamd: INFO: Checking Dependencys
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[11/02/21 20:47:53] webcamd: Dependency: 'crudini' found in /usr/bin/crudini.
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[11/02/21 20:47:53] webcamd: Dependency: 'mjpg_streamer' found in /usr/local/bin/mjpg_streamer.
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[11/02/21 20:47:53] webcamd: Dependency: 'ustreamer' found in /usr/local/bin/ustreamer.
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[11/02/21 20:47:53] webcamd: Dependency: 'v4l2rtspserver' found in /usr/local/bin/v4l2rtspserver.
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[11/02/21 20:47:54] webcamd: INFO: Detect available Cameras
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[11/02/21 20:47:54] webcamd: INFO: Found 2 available Camera(s)
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[11/02/21 20:47:54] webcamd: /dev/v4l/by-id/usb-USB_Camera_USB_Camera_SN0001-video-index0 -> /dev/video1
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[11/02/21 20:47:54] webcamd: Detected 'Raspicam' Device -> /dev/video0
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[11/02/21 20:47:54] webcamd: Try to start configured Cams / Services...
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[11/02/21 20:47:55] webcamd: INFO: Configuration of Section [cam 1] looks good. Continue...
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[11/02/21 20:47:55] webcamd: Starting mjpeg-streamer with Device /dev/video0 ...
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[11/02/21 20:48:03] webcamd: INFO: Configuration of Section [cam usb_black] looks good. Continue...
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[11/02/21 20:48:04] webcamd: Starting ustreamer with Device /dev/v4l/by-id/usb-USB_Camera_USB_Camera_SN0001-video-index0 ...
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[11/02/21 20:48:11] webcamd: ... Done!
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The next option is
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log_level: verbose
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This gives you a little more Informations.
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It prints out you existing webcam.conf and shows
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a detailed info about your configured ( and connected ) cams.\
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Like that:
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[10/24/21 02:46:00] webcamd: INFO: Detect available Cameras
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[10/24/21 02:46:00] webcamd: INFO: Found 1 available Camera(s)
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[10/24/21 02:46:00] webcamd: Detected 'Raspicam' Device -> /dev/video0
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[10/24/21 02:46:00] webcamd: Supported Formats:
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[10/24/21 02:46:00] webcamd: [0]: 'YU12' (Planar YUV 4:2:0)
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[10/24/21 02:46:01] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:01] webcamd: [1]: 'YUYV' (YUYV 4:2:2)
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[10/24/21 02:46:01] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:01] webcamd: [2]: 'RGB3' (24-bit RGB 8-8-8)
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[10/24/21 02:46:01] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:01] webcamd: [3]: 'JPEG' (JFIF JPEG, compressed)
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[10/24/21 02:46:01] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:01] webcamd: [4]: 'H264' (H.264, compressed)
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[10/24/21 02:46:01] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:02] webcamd: [5]: 'MJPG' (Motion-JPEG, compressed)
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[10/24/21 02:46:02] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:02] webcamd: [6]: 'YVYU' (YVYU 4:2:2)
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[10/24/21 02:46:02] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:02] webcamd: [7]: 'VYUY' (VYUY 4:2:2)
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[10/24/21 02:46:02] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:02] webcamd: [8]: 'UYVY' (UYVY 4:2:2)
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[10/24/21 02:46:02] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:02] webcamd: [9]: 'NV12' (Y/CbCr 4:2:0)
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[10/24/21 02:46:03] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:03] webcamd: [10]: 'BGR3' (24-bit BGR 8-8-8)
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[10/24/21 02:46:03] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:03] webcamd: [11]: 'YV12' (Planar YVU 4:2:0)
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[10/24/21 02:46:03] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:03] webcamd: [12]: 'NV21' (Y/CrCb 4:2:0)
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[10/24/21 02:46:03] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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[10/24/21 02:46:03] webcamd: [13]: 'RX24' (32-bit XBGR 8-8-8-8)
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[10/24/21 02:46:03] webcamd: Size: Stepwise 32x32 - 2592x1944 with step 2/2
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This is useful to determine what the Hardware Encoder of your Camera is capable of.\
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In this case a "cheap" raspicam for about 7€ was used.\
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So, truly made for 'Helper for Setup' purposes.
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If you want to get the full Details, please use
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log_level: debug
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This will show you barely the same as 'verbose' but it prints also your\
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configured Start Parameters ( and the defaults ), also it shows\
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the Output of your choosen Streamer.\
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This option ist more for debugging purposes and has a tendency to overwhelm you if you are not familiar with that.
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---
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Another Option that affects the 'logging' behavior is
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delete_log: true
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If you enable that option, everytime you restart, your existing log file will be deleted.
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Now the more interessting part.
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[cam 1]
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streamer: ustreamer
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port: 8080
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device: /dev/video0
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resolution: 640x480
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max_fps: 15
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> _Note: You can name the cam, how you want!_\
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> _ex.: [cam raspicam]_
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---
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This section should be pretty much self explantory.
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streamer: ustreamer
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means your choosen streamservice will be mjpg_streamer.\
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You can choose:
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- ustreamer - A streamserver from Pi-KVM Project\
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active maintained by [Maxim Devaev](https://github.com/mdevaev)\
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[ustreamer on github](https://github.com/pikvm/ustreamer)
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- rtsp - v4l2rtspserver with Multiprotocol Support\
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active maintained by [Michel Promonet](https://github.com/mpromonet) \
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[v4l2rtspserver on github](https://github.com/mpromonet/v4l2rtspserver)
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More Services will come in the (hopefully, near) future.
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---
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port: 8080
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The port where the choosen service will listen on\
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**_NOTE: If you choose 'rtsp' use Port 8554!_**
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**_NOTE: Ports 8080 - 8084 are covered by nginx reverse proxy! \
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According to that 8080 will be /webcam, port 8081 will be /webcam1 and so on._**
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device: /dev/video0
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The Videodevice (Camera) what should be used by choosen Streamservice.
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device: /dev/v4l/by-id/usb-PixArt_Imaging_Inc._USB2.0_Camera-video-index0
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is also valid. Your devices are listed in your log-file on every run.\
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So, you can easily copy it from there.
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---
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resolution: 640x480
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max_fps: 15
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This last 2 should be pretty obvious :)
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As the last option:\
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This needs some to read further Information.
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custom_flags:
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If you enable this in your [cam whatevernameyouset],\
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you can add parameters according to your needs.\
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Those will be appended to the default/preconfigured parameters.
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To setup Services to your need you have to take a closer look to the documentation of the Projects named above.\
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As a pointer in the right direction:
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- ustreamer
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- For sake of simplicity I converted ustreamers manpage to
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[ustreamer's manpage](./ustreamer_manpage.md)
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- v4l2rtspserver
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- Please visit [v4l2rtspserver Usage](https://github.com/mpromonet/v4l2rtspserver#usage)\
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---
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### Feature V4L2 Control:
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v4l2ctl:
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This optional parameter allows you to setup your Cam due v4l2-ctl options.
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Unfortunatly this is a complex topic. But I try to explain it, as good I can.
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### As an Example
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You own a Logitech C920 Camera, these camera needs some tweaks to get a sharp picture.\
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A solution was to use a cronjob (timed actions due scripts) that runs a script with some v4l2-ctl commands.
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v4l2-ctl -d /dev/video0 -c focus_auto=0
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v4l2-ctl -d /dev/video0 -c focus_absolute=30
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That script gets executed when th Pi boots up.\
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Not a comfortable solution.
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alexz from the mainsail-crew mentioned it would be a good move when \
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this could happen by crowsnest, hassle free for the user.
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So, here we go.
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Simply add
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v4l2ctl: focus_auto=0,focus_absolute=30
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to your camera setup section. \
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Restart webcamd via mainsail (or your used UI) and you're good to go.
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To determine which options or better said parameters your Webcam provides, \
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login to your Pi via ssh and type
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v4l2-ctl -d <yourdevice> -L
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_Note: Replace \<yourdevice> with the according string. ex.:_
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v4l2-ctl -d /dev/video0 -L
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This will show you a list with available options.
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You have to "play around" with those settings if it matches your needs.
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simply repeat the commands as mentioned earlier in your ssh connection.
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If you have discoverd your setup write that to your webcam.conf as described.
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---
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## CustomPIOS Module
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I have decided to provide an [CustomPiOS Module](https://github.com/guysoft/CustomPiOS) to make it easier to integrate to other Distributions like MainsailOS or similar.
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Please see [README.md](./custompios/README.md) in the module folder for\
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further Informations.
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---
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## Credits
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I want to give a huge shoutout to _lixxbox_ and _alexz_ from the mainsail-crew.\
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Without these guys it simply were not possible to get that done.
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They both mentioned improvements and tested a heck out of there machines to get this all functioning well.\
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Thank you, mates :) Proud to be a part of.
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---
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**So, with all that said, get your position seaman! Prepare to get wet feets on your Journey.**
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## ARRRR yooo rrready to sail?
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