DirectFB | Mirror of git :

by Distrotech C Version: Current License: LGPL-2.1

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kandi X-RAY | DirectFB Summary

DirectFB is a C library. DirectFB has no bugs, it has a Weak Copyleft License and it has low support. However DirectFB has 2 vulnerabilities. You can download it from GitHub.

DirectFB is a graphics library which was designed with embedded systems in mind. It offers maximum hardware accelerated performance at a minimum of resource usage and overhead. Check for more and up to date infos.

Support

Quality

Security

License

Reuse

Support

DirectFB has a low active ecosystem.

It has 20 star(s) with 23 fork(s). There are 6 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of DirectFB is current.

Quality

DirectFB has 0 bugs and 0 code smells.

Security

DirectFB has 2 vulnerability issues reported (0 critical, 2 high, 0 medium, 0 low).

DirectFB code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

DirectFB is licensed under the LGPL-2.1 License. This license is Weak Copyleft.

Weak Copyleft licenses have some restrictions, but you can use them in commercial projects.

Reuse

DirectFB releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

It has 116 lines of code, 0 functions and 8 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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DirectFB Key Features

No Key Features are available at this moment for DirectFB.

DirectFB Examples and Code Snippets

No Code Snippets are available at this moment for DirectFB.

Community Discussions

Trending Discussions on DirectFB

Specify a display for a sink in GStreamer

gl.h: No such file or directory, I can't seem to quell this error

Strange Symbol on center of screen using PyGame with DirectFB

Qml components not loaded properly on xcb platform

Pygame character movement direction

Pygame Sprite Movement glitch

QUESTION

Specify a display for a sink in GStreamer

Asked 2022-Mar-17 at 09:59

I'm trying to display a video stream on a specific screen. Right now I use the waylandsink that has display and fullscreen properties so I have:

...

ANSWER

Answered 2022-Mar-17 at 09:59

I finally found! And it's the kmssink but I'll explain more why.

First I talked about the waylandsink. The thing is I did not know was wayland is a protocol and it seems to only work for displaying content inside a Desktop Environment (DE). So I guess you could create windows for each display and then link your sink to those windows. But I was looking for a way to display without any DE so waylandsink is a not an option.

For glimagesink from what I tried it's also in a DE so I did not explore more about it.

Then there's the framebuffer using the fbdevsink. It works without DE, but suffers from limitations... There seems to be only one framebuffer situated in /dev/fb0 and what we draw in it is displayed on every screen regardless of the display resolution. So if we have 2 displays with different resolution we cannot do fullscreen without having some cropping on one of them. Plus we cannot display different video on each screen because the framebuffer is duplicated. Finally while I was testing it, I found out some time there were frames that were drawn at the same time into the framebuffer, so it was causing the video to have some weird visual. Maybe the issues I listed could have been fixed in some way but there are just too many so I discarded this option

When I checked the documentation for the kmssink it says there are 2 main parameters I was interrested:

bus-id
connector-id

By specifying the bus-id I though I could display on a specific screen. But all the displays use the same bus-id: 0000:00:02.0 so it's not the parameter to specify a display.

Then there is connector-id. It's an integer and it can be used to specify the display. In my case it's 77 for HDMI-A-1 and 92 for HDMI-A-2.

How do you get the connector-id? Well that's not simple... A command exists to get them and it's called modetest. The thing is it seems to be only included in some embedded devices. I found out that the command was included in the package libdrm but in my case installing it did not give me access to the command... I'm using GStreamer with Rust so by importing the drm package I was able to get a list of connector-id and a lot of data about displays.

So in the end I can do:

Source https://stackoverflow.com/questions/71219343

QUESTION

gl.h: No such file or directory, I can't seem to quell this error

Asked 2021-Jul-26 at 18:58

I was wondering if anyone could help me with this problem that has been plaguing me.

I am currently using Qt Creator with verion 5.11.3 Qt on Ubuntu to build a project. Every time I try to build I get the error "gl.h: No such file or directory".

The error occurs next to the line in my code that says "#include

I have ran the following code as well and it did not change the outcome

...

ANSWER

Answered 2021-Jul-26 at 18:58

Install the OpenGL dev support:

Source https://stackoverflow.com/questions/68532467

QUESTION

Strange Symbol on center of screen using PyGame with DirectFB

Asked 2020-Oct-18 at 12:04

I am using pygame to draw a GUI on tiny SPI LCD mount as /dev/fb1 via directfb.

Whatever I draw, there is a strange symbol display in center of screen.

If I run df_matrix, the strange symbol does not appear.

If I draw in pygame, then manually open /dev/fb1, write screen data, the strange symbol does not appear.

So, how to get rid of this annoying symbol?

...

ANSWER

Answered 2020-Oct-16 at 09:58

If it is truly the mouse cursor as Kingsley suggested in the comments, you can disable the cursor in pygame with:

Source https://stackoverflow.com/questions/64376955

QUESTION

Qml components not loaded properly on xcb platform

Asked 2020-Aug-05 at 17:17

I'm trying to run an application on xcb platform over iMx6 (qt 5.12.8), unfortunately some qml objects are not rendered correctly for example components which requires qtgraphicaleffects. I suspect that the reason for this strange behavior is a wrong cross-compilation of qt libraries, in fact no matter I change configure parameters, I'm not able to enable EGL on X11 which should solve my issue. If I enable qt libs verbose configure I read:

egl-x11.cpp:49:9: error: invalid conversion from ‘EGLNativeDisplayType {aka void*}’ to ‘Display* {aka _XDisplay*}’ [-fpermissive] dpy = egldpy;

...

ANSWER

Answered 2020-Aug-05 at 17:17

I'm answering to my own question for whom may face the same problem. I was compiling qt using a sysroot configured to run with Vivante plugin for video acceleration. That was not compatible with eglfs on x11. Without egl , qt libraries are not able to render correctly complex objects such as those mentioned in the question. Compiling with the right dependencies and running with eglfs solved the issue.

Source https://stackoverflow.com/questions/62603884

QUESTION

Pygame character movement direction

Asked 2020-Jan-17 at 14:16

Quick update I have added a little bit of code to adjust the character's movement, so when the character isn't idle the character faces the last position it was walking towards. But I have any issue with my character always facing left after any movement action. I also updated my character script:

...

ANSWER

Answered 2020-Jan-17 at 14:16

Add a state self.last_move to the class Mage. Set the state when the character moves and draw the placer dependent on the state if self.standing. e.g:

Source https://stackoverflow.com/questions/59788245

QUESTION

Pygame Sprite Movement glitch

Asked 2020-Jan-16 at 16:25

I'm working on a pygame project but I'm having a few complications with the character's movement. The animation is not in sync (in lame terms), when I move right or left there is suppose to be an animation of the character moving left or right smoothly but in my case when the is moving either left or right I can still see the character image for when the character is in an idle position trailing the character when in walking motion. I also have an issue when my character jumps it doesn't come back own. I tweaked the character speed and refresh rate of the screen but nothing seems to help. Here is my code and image below.

File 1. Handles the running of the game

...

ANSWER

Answered 2020-Jan-16 at 16:25

but in my case when the is moving either left or right I can still see the character image for when the character is in an idle position trailing the character when in walking motion.

This because the first what you do in Knight.blitme, is to draw the character in idle position. Then the left or right images is draw on top of it:

Source https://stackoverflow.com/questions/59772607

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install DirectFB

Mandatory are - libc - libpthread - libm - libdl. For regenerating autofoo (./autogen.sh or autoreconf) - autoconf - automake - libtool - pkg-config.
Make sure that " /lib" is listed in your /etc/ld.so.conf. The default prefix is "/usr/local". After adding it you have to run 'ldconfig' as superuser. Alternatively, you can add the path to the environment variable LD_LIBRARY_PATH. This is useful for temporarily switching to another installed version. You might want to copy fb.modes to /etc or merge it with your existing /etc/fb.modes file. The first entry will be used by default - copy other entries you may need. If you want to use a serial mouse, create a link called /dev/mouse that points to serial device (e.g. /dev/ttyS0). Then add a line describing your mouse-protocol to /etc/directfbrc or ~/.directfbrc: "mouse-protocol=[ms|ms3|mouseman|mousesystems]". If you are cross compiling and have installed the required libraries someplace other than /usr/local/lib be sure to add the bin directory for those libraries to the front of your 'PATH'. For instance if you configured using: --prefix=/dfb/usr/local then be sure to export PATH=/dfb/usr/local/bin:$PATH before compiling and installing.
In the DirectFB directory type:
Make sure that " /lib" is listed in your /etc/ld.so.conf. The default prefix is "/usr/local". After adding it you have to run 'ldconfig' as superuser. Alternatively, you can add the path to the environment variable LD_LIBRARY_PATH. This is useful for temporarily switching to another installed version.
You might want to copy fb.modes to /etc or merge it with your existing /etc/fb.modes file. The first entry will be used by default - copy other entries you may need.
If you want to use a serial mouse, create a link called /dev/mouse that points to serial device (e.g. /dev/ttyS0). Then add a line describing your mouse-protocol to /etc/directfbrc or ~/.directfbrc: "mouse-protocol=[ms|ms3|mouseman|mousesystems]".
If you are cross compiling and have installed the required libraries someplace other than /usr/local/lib be sure to add the bin directory for those libraries to the front of your 'PATH'. For instance if you configured using: --prefix=/dfb/usr/local then be sure to export PATH=/dfb/usr/local/bin:$PATH before compiling and installing.

Support

Using SDL (without acceleration support), DirectFB also supports the following operating systems:. Please note that SDL support is experimental and incomplete. It is intended for developers to allow development of DirectFB applications in various environments.

Find more information at: