Whether OpenMAX is deprecated? What is the uptodate multimedia platform on RPi?

[italiansc]

From some documents said OpenMAX has been deprecated for a long time and isn't supported with 64-bit kernels, is it right? If it is, What is the uptodate multimedia platform on RPi?

[6by9]

V4L2 is the mainline Linux kernel API for codec and camera related multimedia, and is where we are heading for those. Codecs are all supported already, as is the ISP for resizing and format conversion.

libcamera is coming in to provide a fully featured (and open source) camera stack.

DRM/KMS, and EGL are the mainline Linux kernel APIs for display side stuff, and again where things are heading.

For the older Pi variants MMAL is there and supported. There is an issue in 64bit land at present with it that will be addressed when time and resource permits.

OpenMAX has been a dead since around 2012. Android used it as most SoC vendors claimed support as part of the tick-box "APIs supported" marketing blurb, but whilst it claimed to be a standard there were significant differences in the interpretation by vendors. It's always been a pain to handle with regard the asynchronous callbacks for event completion, and debugging why transitions never completed was always a nightmare. RIP OMX.
And there is certainly no way I intend to attempt making OMX work in a 64bit environment - it's just too involved and messy.

[gkreidl]

Will the V4L2 H264 decoder be able to decode interlaced video in the (near) future?

[italiansc]

So if the OpenMAX API is removed from kernel,which API should I use to operator audio device? Currently I only know use OMX Component to play audio.

[6by9]

So if the OpenMAX API is removed from kernel,which API should I use to operator audio device? Currently I only know use OMX Component to play audio.

ALSA - the Linux standard audio library that has been supported on the Pi since about 2015. It also supports I2S and USB sound cards, unlike OMX.

For audio codecs use FFmpeg and the associated libavcodec library - that has far greater codec support than OMX has ever provided, and audio is far lighter on the CPU than video so shifting it to the GPU has minimal gain.

[jamesh]

So if the OpenMAX API is removed from kernel,which API should I use to operator audio device? Currently I only know use OMX Component to play audio.

You should use the standard linux ALSA components, which is how the desktop does things.

edit: Ninja'd