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libweston: Add support to set content-protection for a weston_surface

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The protection requested for a given surface, must reach through the
weston_surface::pending_state, in the commit-cycle for the
weston_surface, so that it gets updated in the next commit.

As some protection is requested for a given weston_surface, it means
protection must be set for each of the outputs which show the surface.

While setting the protection of a weston_output, care must be taken
so as to avoid, degrading the protection of another surfaces, enjoying
the protection. For this purpose, all the weston_surfaces that are
shown on a weston_output are checked for their desired protection.
The highest of all such desired protections must be set for the
weston_output to avoid degrading of existing protected surfaces.
A surface requesting protection for a lower content-type can still be
provided protection for a higher type but the converse cannot be
allowed.

This patch adds support to set content-protection for a suface, which
inturn sets the content-protection for each of the outputs on which
it is shown, provided, none of the existing surface's protection
request is downgraded.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
This commit is contained in:
Ankit Nautiyal
2019-03-26 13:37:12 +05:30
parent 4f64ff8b2f
commit 4b6e73d617
2 changed files with 41 additions and 1 deletions
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include/libweston/libweston.h
+5
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@@ -1439,6 +1439,9 @@ struct weston_surface_state {
/* zwp_surface_synchronization_v1.get_release */
struct weston_buffer_release_reference buffer_release_ref;
/* weston_protected_surface.set_type */
enum weston_hdcp_protection desired_protection;
};
struct weston_surface_activation_data {
@@ -1568,6 +1571,8 @@ struct weston_surface {
struct wl_resource *synchronization_resource;
int acquire_fence_fd;
struct weston_buffer_release_reference buffer_release_ref;
enum weston_hdcp_protection desired_protection;
};
struct weston_subsurface {