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 loaded)
- The relevant h/w based encoder/decoder elements are registered
(i.e, Intel Media SDK Gstreamer plugin (libgstmsdk.so) and associated
libraries (such as va or vaapi) are properly installed).
When tested on a Gen 12 Intel GPU (codenamed AlderLake/TigerLake)
with Qemu/Spice + h/w encoder elements, we noticed that the time
to encode a 1920x1080 BGRx frame was reduced to ~2-3 ms compared
to ~12-16 ms with a s/w encoder (x264enc). Other advantages
include reduced overall CPU utilization.
However, once these patches are applied, the only way to force
Spice/Spice-gtk to fallback to s/w based encoder/decoder is to
remove the msdk and or vaapi plugins from GST_PLUGIN_PATH. This
might be desirable for debugging purposes or for other reasons.
v2:
- Added several bugfix patches to this series
- Moved udev helper to determine GPU Vendor to spice-common repo
- Refactored the code to prioritize plugins in the order msdk > va > vaapi
Cc: Frediano Ziglio <freddy77@xxxxxxxxx>
Cc: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Cc: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
Cc: Dongwon Kim <dongwon.kim@xxxxxxxxx>
Cc: Jin Chung Teng <jin.chung.teng@xxxxxxxxx>
Cc: Hazwan Arif Mazlan <hazwan.arif.mazlan@xxxxxxxxx>
Vivek Kasireddy (4):
channel-display-gst: Prefer playbin3 to playbin
channel-display-gst: Add "byte-stream" as the stream format for h264
channel-display-gst: Don't unref appsink and pipeline objects
channel-display-gst: Use h/w based decoders with Intel GPUs if
possible (v2)
src/channel-display-gst.c | 232 ++++++++++++++++++++++++++++++++-----
src/channel-display-priv.h | 4 +-
2 files changed, 205 insertions(+), 31 deletions(-)
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2.39.2