~/tegra_multimedia_api/argus/apps/camera/renderer/Composer.h::Composer class

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi Folks,

I intend to use Composer class in my pipeline. In one of nvidia example application - argus_camera (i.e. ~~/tegra_multimedia_api/argus/apps/camera/ui/camera/Main.cpp) this class is used for camera preview. I would like to use this class to put up my ‘processed images/video’ on screen.

Would appreciate any guidance for this .

Thanks

2

Hi,
The code is at

tegra_multimedia_api\argus\apps\camera\renderer\Composer.cpp
tegra_multimedia_api\argus\apps\camera\renderer\StreamConsumer.cpp

In initializing, it initializes vertex and fragment shader and binds to eglstream/texture.
Everytime it gets an frame, it executes

glBindTexture();
...
glDrawArrays();

And do swap buffers.

It is same as preview consumer at

tegra_multimedia_api\argus\samples\utils\PreviewConsumer.cpp
3

Hi DaneLLL

Thanks for your help.

In the examples you have provided - cameras are directly feeding frames for preview/composer. In my situation I am looking to put up ‘post processed’ video frames on composer/screen. I am looking for way to do that. To me the situation in two aforesaid examples is not same as my requirement.

THanks

4

We have several samples for processing frames. FYR.
gl APIs

tegra_multimedia_api\argus\samples\openglBox

CUeglFrame

tegra_multimedia_api\argus\samples\cudaHistogram

NvBuffer

tegra_multimedia_api\samples

tegra_multimedia_api\samples\09_camera_jpeg_capture

9_camera_jpeg_capture