configure.ac: bump version to 1.6.90

Open master for new features again.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
cosmetic: Remove prototype for nonexistent function
cosmetic: Move WL_EXPORT out of header files

Most of the code only puts WL_EXPORT in .c files.  Remove the few
instances in header files.

If it's missing form the associated .c, put it there instead.
clients: Maximize window when double touch on title bar

Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
shell: fix weston_output_mode_switch() usage

Calling weston_output_mode_switch() with WESTON_MODE_SWITCH_RESTORE_NATIVE
will result in the mode being set "back" to the passed in mode - so the
passed mode should be the native mode.

Additionally, weston_output_mode_switch() should be called when
output->original_mode is non-NULL (which indicates we had a temporary
mode set).  The comparison to current_mode results in a lot of
log chatter.

Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
protocol: add presentation extension v5

Add accurate presentation timing features to Wayland: queueing and
feedback.

This specification is based on the draft written by Frederic Plourde
<frederic.plourde@collabora.co.uk> and redesigned by Pekka Paalanen.

The RFC v2 version is from
http://lists.freedesktop.org/archives/wayland-devel/2014-January/012988.html

Changes in v3:

* associate presentation time to current surface contents

This implements the suggestion from
http://lists.freedesktop.org/archives/wayland-devel/2014-February/013066.html

which prevents surface content from jumping backwards in time if a
client retroactively queues an update with a target time in the past.

* use 64-bit tv_sec in presentation

The time_t type used in struct timespec could be almost anything. POSIX
probably defines it to be an integer, but not the size. Apparently it is
usually 'long', which makes it 64-bit on x86_64.

To be able to fully represent timespec values returned by clock_gettime,
change the protocol to use 64 bits for the tv_sec part.

* define an error for invalid tv_nsec

This allow us to rely on the normalized timestamp form.

* define some interactions with sub-surfaces

Sub-surface cached state updates (synchronized mode) are designed
especially for resizing. As queued updates are not meant to produce any
resizing-like effects, they also do not trigger any sub-surface
operations.

* add sub-headings as xml comments

* queued update cannot map

Because before mapping, the surface has no main output assigned. An
immediate commit is needed anyway, to be able to set all the surface
state, which a queued update cannot touch.

* frame callbacks are not queued

It is not known when queueing frame callbacks would be useful.

Changes in v4:

* remove mentions of the queuing feature

The specification has been split and the queuing feature will be added
back in another version of the extension.

* add flags argument to 'presented' event

Describe the nature of how the update was presented to screen and the
characteristics of the feedback information. No flags have been
defined for now.

* add a protocol error code for invalid flags

Changes in v5:

* remove the destroy method for the feedback object

The protocol object should instead be automatically destroyed after
a 'presented' or 'discarded' event has been triggered.

* some grammatical corrections to the specification

[Louis-Francis Ratté-Boulianne: split the spec in two parts]

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
v3 Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
compositor: add stub implementation of presentation interface

You can bind to the global interface, and it delivers a fake clock id.
All requests on it raise an error.

Changes in v4:

* queuing methods were extractracted for a later series

[Louis-Francis Ratté-Boulianne: split queuing feature]

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
weston-info: report presentation clock

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
v3 Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
compositor: set and use the presentation clock everywhere

Add presentation clock setters that verify the given clock actually
works. Offer an automatic choice of a software fallback clock, when a
backend has to always use clock_gettime() to approximate the
presentation time.

The DRM backend already queried the DRM about the clock id, just let the
DRM backend set the presentation clock from that.

For all other backends which do not get a timestamp from the driver,
call the software clock setter to choose a suitable clock.

Report the chosen clock via presentation.clock_id event to clients.

In finish_frame(), upgrade the argument from uint32_t milliseconds to
struct timespec which can accurately hold the presentation clock values.
This will be needed when weston_output_finish_frame() starts to send out
presentation_feedback.presented events.

While at it, replace gettimeofday() calls with clock_gettime() using the
chosen presentation clock, so we manufacture presentation timestamps
from the presentation clock when the gfx drivers cannot give us a proper
timestamp.

Rpi patch is more verbose due to not having the compositor pointer
available in rpi_flippipe_update_complete(). Explicitly carry the clock
id with flippipe so it is available in the thread.

Changes in v4:

* rpi debug build fix

v4 Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
v3 Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
compositor: implement presentation_feedback

Implement the presentation.feedback request, and the
presentation_feedback protocol interface. Feedback information is
delivered to clients as the backend reports it, except the refresh
counter (MSC) which is always reported as zero.

Changes in v4:

* add 'flags' argument to 'presented' event without implementation

Changes in v5:

* remove the 'destroy' method implementation for feedback objects
  [Pekka Paalanen: do not leak struct feedback.]

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
v3 Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
compositor-drm: deliver frame seq for feedback

Add 'msc' field to weston_output to maintain the refresh counter, and
use it in presentation_feedback.presented.

Make compositor-drm update the per-output refresh counter with the
values reported by DRM. If the DRM reported value jumps backwards,
assume it wrapped around once.

Other backends do not update weston_output::msc, and there
presentation_feedback will always deliver refresh counter as zero.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
v3 Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
tests: presentation test, simple

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
clients: add presentation-shm demo

This started as a copy of simple-shm.c before it was converted to
xdg_shell.

This demo excercises the presentation feedback interface in five
different modes:

- A continuous repaint loop triggered by frame callbacks, and using
  immediate commits, just gathering presentation feedback and computing
  some time intervals for statistics.

- The same as above, except with 1s sleep before actually repainting as
  a response to frame callback. This tests how well the compositor can
  do a repaint from idle state (not continuously repainting), assuming
  nothing else is causing repaints.

- A continuous repaint loop triggered by 'presented' events rather than
  by frame callbacks. If Weston uses an appropriate scheduling
  algorithm, this mode achieves the smallest possible frame latency
  (below one output refresh period).

In all modes, all frames are pre-rendered at startup, so no rendering
happens during the animation.

[Louis-Francis Ratté-Boulianne: split queuing feature]

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
shell: don't crash on create_common_surface() failure

Noticed while reading code, that create_common_surface() may return
NULL, and callers of its direct callers check for NULL, but the
intermediate function in between would crash.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
protocol: add role error code to xdg_shell

Needed for properly reporting role violations from
xdg_shell.get_xdg_surface and .get_xdg_popup.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
Acked-by: Jason Ekstrand <jason.ekstrand@intel.com>
compositor: send error for surface role resets

With the more accurate definition of wl_surface roles in Wayland,
enforce the restriction: a role is always set permanently, and
attempting to change it is a protocol error.

This patch is based on Jasper's patch:
http://lists.freedesktop.org/archives/wayland-devel/2014-August/016811.html

The difference in this patch compared to his are:

- send role errors on the interface whose request triggers it, not on
  wl_surface

- an interface could have several requests assigning different roles,
  cannot use wl_interface as the unique key; use an arbitary string
  instead

- ensure in window-manager.c that create_shell_surface() ->
  create_common_surface() is never called with surface->configure set,
  to avoid compositor abort

- use wl_resource_post_no_memory() where appropriate instead of
  hand-rolling it with wl_resource_post_error()

Ideally we would not add weston_surface::role_name field, but use
weston_surface::configure. At the moment this is not possible though,
because at least shell.c uses several different roles with the same
configure function. Drag'n'drop uses two configure functions for the
same role. The configure hook is also reset in several places,
which is not good for role tracking.

This patch overlooks the wl_surface roles assigned in privileged
extensions: screensaver, panel, background, lock, input panel.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
tests: add role conflict sub-surface vs. wl_shell_surface

Add tests for triggering the role conflict when a wl_surface is already
a wl_shell_surface and then attempted to be made into a sub-surface, and
vice versa.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
releasing: update web host name

Signed-off-by: Daniel Stone <daniels@collabora.com>
Very OCD cosmetic nitpick
gl-renderer: don't move memory in output_rotate_damage

output_rotate_damage shifted an array of pixman regions with a loop.  Now
it uses an index into that array.

This currently only saves 1 pixman_region32_copy, but we can now raise
BUFFER_DAMAGE_COUNT without a performance impact if we run into a
configuration where this is useful.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>