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kmssink: Add a helper function to collect formats and modifiers

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5174>
This commit is contained in:
He Junyan 2023-08-11 18:28:49 +08:00
parent 9df377efc1
commit 3f510d1296
1 changed files with 75 additions and 0 deletions
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75
subprojects/gst-plugins-bad/sys/kms/gstkmssink.c
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@ -812,6 +812,81 @@ modesetting_failed:
}
}
static gboolean
get_all_formats_and_modifiers (GstKMSSink * self, drmModePlane * plane,
GArray ** ret_formats, GArray ** ret_modifiers)
{
guint32 i;
drmModeObjectProperties *plane_props = NULL;
drmModePropertyRes **plane_props_info = NULL;
drmModeFormatModifierIterator iter = { 0 };
drmModePropertyBlobPtr blob;
GArray *formats = NULL, *modifiers = NULL;
gboolean ret = FALSE;
plane_props = drmModeObjectGetProperties (self->fd,
plane->plane_id, DRM_MODE_OBJECT_PLANE);
if (!plane_props)
goto out;
plane_props_info =
g_malloc0 (plane_props->count_props * sizeof (drmModePropertyRes *));
for (i = 0; i < plane_props->count_props; i++)
plane_props_info[i] = drmModeGetProperty (self->fd, plane_props->props[i]);
formats = g_array_new (FALSE, FALSE, sizeof (guint32));
modifiers = g_array_new (FALSE, FALSE, sizeof (guint64));
for (i = 0; i < plane_props->count_props; i++) {
if (strcmp (plane_props_info[i]->name, "IN_FORMATS"))
continue;
blob = drmModeGetPropertyBlob (self->fd, plane_props->prop_values[i]);
if (!blob)
continue;
while (drmModeFormatModifierBlobIterNext (blob, &iter)) {
g_array_append_val (formats, iter.fmt);
g_array_append_val (modifiers, iter.mod);
GST_DEBUG_OBJECT (self, "Plane id %d, get format/modifier pair %"
GST_FOURCC_FORMAT ":0x%016" G_GINT64_MODIFIER "x",
plane->plane_id, GST_FOURCC_ARGS (iter.fmt), iter.mod);
}
drmModeFreePropertyBlob (blob);
}
if (formats->len == 0)
goto out;
*ret_formats = formats;
formats = NULL;
*ret_modifiers = modifiers;
modifiers = NULL;
ret = TRUE;
out:
if (plane_props_info) {
g_assert (plane_props);
for (i = 0; i < plane_props->count_props; i++) {
if (plane_props_info[i])
drmModeFreeProperty (plane_props_info[i]);
}
g_free (plane_props_info);
}
if (plane_props)
drmModeFreeObjectProperties (plane_props);
if (formats)
g_array_unref (formats);
if (modifiers)
g_array_unref (modifiers);
return ret;
}
static gboolean
ensure_allowed_caps (GstKMSSink * self, drmModeConnector * conn,
drmModePlane * plane, drmModeRes * res)