did anybody ever tried to include ffmpeg?

[bestenfallskongenial]

im a noop and apologize in front of my question,
but i was batteling for weeks to get the compiler to a point where i could compile
the in the graphic subsystem lvgl included "wrapper" ( ?! ) lv_ffmpeg.h...

somehow i eleminated all warnings and errors but now i wonder:

do i need specific codecs additional to the in the lvgl documentation
mentioned like h264 hardware acceleration or api´s like mmal
or even h.264_mmal ( its a thing in ffmpeg ) to use it?
or is the fact that the circle system has already the bcm_host.h included
indication that ( depends how good lvgl is integrated ? )
i dont need to worry about such silly things like achieving
direct hardware access and control over GPU-related operations.

absolute noop question and i dont understand any word im using here,
still happy to get some feedback...

ah yeah, why im asking?

i like to run a video on the bare metal raspi,
more specific i need to encode certain frames into a buffer ( struct )
for additional processing...

thanks

[bestenfallskongenial]

and here the absolute enlightening documentation of lvgl
"how to include the 3rd party support for ffmpeg"

FFmpeg support
A complete, cross-platform solution to record, convert and stream audio and video.

Install FFmpeg
Download FFmpeg from(https://www.ffmpeg.org/download.html)

./configure --disable-all --disable-autodetect --disable-podpages --disable-asm --enable-avcodec --enable-avformat --enable-decoders --enable-encoders --enable-demuxers --enable-parsers --enable-protocol='file' --enable-swscale --enable-zlib

make

sudo make install

Add FFmpeg to your project
Add library: FFmpeg (for GCC: -lavformat -lavcodec -lavutil -lswscale -lm -lz -lpthread)

Usage
Enable LV_USE_FFMPEG in lv_conf.h.

See the examples below.

Note that, the FFmpeg extension doesn't use LVGL's file system. You can simply pass the path to the image or video as usual on your operating system or platform.

[rsta2]

No need to apologize, but I think, that's not an easy task, you have chosen. I also can't help you in detail, but I can say, that Circle does not support any accelerated API for displaying videos. You can only write directly to the frame buffer, or use DMA memory copy for this purpose.

[bestenfallskongenial]

didnt expect you to answer. thanks.

i started with an project form cyberboy666 the recure video sampler and wondered
how i can possibly remove all the abstraction layers like a full blown raspian,
python interpreter and openFramework to get something simliar to work,
mainly to create some nice GLSL effects,
and i stumbled over your amazing project.
because im quite non professional, non linear working person i thought i have to run oF on cirlce.
days later i realised that you already included a openGL capable framework,
therefore i started to look for sollutions for a video player - FFmpeg as obvious choise,
spend 14 days to read forums about the many issues people faced implementing
MMAL for rasppis only to realise that you also included the most crucial part,
the bcm_host driver ( cross compile the userland repository was the point i almost lost hope )...

the point is, as long as your circle environment is capable of openGL ES the only purpose of FFmpeg,
it has also hardware acceleration support for h.264_MMAL and MMALs API is build around the bcm drivers,
is encoding frames ( i dont care about framerates ) from a video file,
to use them as textures i want to bring into the gpu.

in my humble opinion you provided everything neccessary to get it done.
the only question i ask you in my mind over and over again was:

"how for goes the integration of the submodules / addons regarding the broadcom drivers?"

now i start with the hardware integration to have something to work on,
i guess i can test my button, rotary encoder and mcp3208 driver tonight and try from there
some shader magic, i´ll keep you posted and 1000 thanks for all your work here.

[rsta2]

You are welcome. I remember that, when I ported the userland code, I eliminated the MMAL code to reduce complexity. The port has been done to support 2D accelerated GUI creation for a specific project, so the focus was on OpenVG. But OpenGL ES 1.1 and 2.0 is supported either. Thanks for appreciating Circle!