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kmssink: fallback to universal planes if no overlay plane is found

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Without setting the DRM_CLIENT_CAP_UNIVERSAL_PLANES capability bit, only
overlay planes are made available for compatibility with legacy clients.

But if a CRTC doesn't have an overlay plane associated, then kmssink is
not able to find a plane for the CRTC and the pipeline will fail, i.e:

ERROR                kmssink gstkmssink.c:482:gst_kms_sink_start:<kmssink0> Could not find a plane for crtc

If no overlay planes were found for a given CRTC, fallback to universal
planes so DRM will also return primary planes that can be used instead.

https://bugzilla.gnome.org/show_bug.cgi?id=768183

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
This commit is contained in:
Javier Martinez Canillas 2016-06-28 16:07:43 -04:00 committed by Víctor Manuel Jáquez Leal
parent c2cd60db0f
commit 34c88dca2d
1 changed files with 20 additions and 2 deletions
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18
sys/kms/gstkmssink.c
View file

@ -352,9 +352,11 @@ gst_kms_sink_start (GstBaseSink * bsink)
drmModeCrtc *crtc;
drmModePlaneRes *pres;
drmModePlane *plane;
gboolean universal_planes;
gboolean ret;
self = GST_KMS_SINK (bsink);
universal_planes = FALSE;
ret = FALSE;
res = NULL;
conn = NULL;
@ -388,6 +390,11 @@ gst_kms_sink_start (GstBaseSink * bsink)
if (!crtc)
goto crtc_failed;
retry_find_plane:
if (universal_planes &&
drmSetClientCap (self->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1))
goto set_cap_failed;
pres = drmModeGetPlaneResources (self->fd);
if (!pres)
goto plane_resources_failed;
@ -472,6 +479,12 @@ crtc_failed:
goto bail;
}
set_cap_failed:
{
GST_ERROR_OBJECT (self, "Could not set universal planes capability bit");
goto bail;
}
plane_resources_failed:
{
GST_ERROR_OBJECT (self, "drmModeGetPlaneResources failed: %s (%d)",
@ -481,8 +494,13 @@ plane_resources_failed:
plane_failed:
{
if (universal_planes) {
GST_ERROR_OBJECT (self, "Could not find a plane for crtc");
goto bail;
} else {
universal_planes = TRUE;
goto retry_find_plane;
}
}
}