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waylandsink: do not use drm dumb pool when importing DMAbuf buffers

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There is no need to use DRM dumb pool if buffer to
render is already a DMABuf, just import it and render it.

This fixes a DMAbuf memory leakage when waylandsink downstream
element exports DMABuf while waylandsink is configured to be
DMABuf exporter (drm-device=/drv/dri/card0):

gst-launch-1.0 v4l2src io-mode=4 ! waylandsink drm-device=/dev/dri/card0

leakage identfied with command:
watch "cat /sys/kernel/debug/dma_buf/bufinfo | grep attached "

Fixes #2729

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5350>
This commit is contained in:
Hugues Fruchet 2023-06-14 16:19:49 +02:00 committed by GStreamer Marge Bot
parent 39aca8a096
commit e4bc88492a
1 changed files with 6 additions and 6 deletions
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2
subprojects/gst-plugins-bad/ext/wayland/gstwaylandsink.c
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@ -924,12 +924,12 @@ gst_wayland_sink_show_frame (GstVideoSink * vsink, GstBuffer * buffer)
wbuf = gst_wl_linux_dmabuf_construct_wl_buffer (buffer, self->display,
&self->drm_info);
if (!wbuf && !self->skip_dumb_buffer_copy) {
/* DMABuf did not work, let try and make this a dmabuf, it does not matter
* if it was a SHM since the compositor needs to copy that anyway, and
* offloading the compositor from a copy helps maintaining a smoother
* desktop.
*/
if (!self->skip_dumb_buffer_copy) {
GstVideoFrame src, dst;
if (!gst_wayland_activate_drm_dumb_pool (self)) {