We first try to detect if an Intel GPU is available (by looking into
udev's database) and then probe Gstreamer's registry cache to see
if there is h/w based decoder (element) available for the incoming
video codec format. If both these conditions are satisfied (i.e,
Intel Media SDK Gstreamer
Once it is determined that an Intel GPU is available/active (after
looking into udev's database), we try to see if there is a h/w
based encoder (element) available (in Gstreamer's registry cache)
for the user selected video codec. In other words, if we find that
the Intel Media SDK Gstreamer
Given that libudev is widely available on many distros, we can
use the relevant APIs to iterate over all the PCI devices on
any given system to identify if a GPU is available by looking
at the driver name associated with it.
This capability (identifying GPU Vendor) is useful to determine
whether
From: Hazwan Arif Mazlan
Using NV12 as the output format for the videoconvert element would
allow us to pair a s/w based encoder with a h/w based decoder for
decoding the stream as most h/w based decoders only accept NV12 as
the input format given its popularity.
Cc: Frediano Ziglio
Cc:
It looks like setting the Gst pipeline state to GST_STATE_NULL
would cause all the references on most of the objects associated
with the pipeline to be dropped; therefore, there is no need
to explicitly unref them while freeing the pipeline. This patch
prevents the following errors from showing up
Adding the string "stream-format=byte-stream" to decoder capabilities
(dec_caps) for h264/h265 codecs stops Gstreamer from complaining
about missing stream format.
Cc: Frediano Ziglio
Cc: Dongwon Kim
Cc: Jin Chung Teng
Cc: Hazwan Arif Mazlan
Signed-off-by: Vivek Kasireddy
---
From: Jin Chung Teng
If playbin3 is available (checked in Gstreamer registry), it
makes sense to prefer it given the major improvements and
features it offers including the capability to handle higher
bitrates.
Cc: Frediano Ziglio
Cc: Dongwon Kim
Cc: Hazwan Arif Mazlan
Signed-off-by: Jin
This patch series includes a patch for Spice (server) to
automatically select h/w based encoder elements and another one
for Spice-gtk (client) to automatically select h/w based decoder
elements with Intel GPUs when these two conditions are met:
- An Intel GPU is available and is active (driver
