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libweston: move output id into add/remove_output()

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Move the output id management into weston_compositor_add_output() and
weston_compositor_remove_output(). This is a more logical place, and
works towards assimilating weston_output_enable_undo().

The output id is no longer available to the backend enable() vfuncs, but
it was not used there to begin with.

v2: moved assert earlier in weston_compositor_add_output()

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>
This commit is contained in:
Pekka Paalanen 2017-03-30 15:19:45 +03:00
parent cc201e47ba
commit 3d2d49723b
1 changed files with 18 additions and 12 deletions
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30
libweston/compositor.c
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@ -4472,6 +4472,8 @@ weston_output_move(struct weston_output *output, int x, int y)
* Removes the output from the pending list and adds it to the compositor's
* list of enabled outputs. The output created signal is emitted.
*
* The output gets an internal ID assigned.
*
* \param compositor The compositor instance.
* \param output The output to be added.
*
@ -4484,6 +4486,17 @@ weston_compositor_add_output(struct weston_compositor *compositor,
struct weston_view *view, *next;
assert(!output->enabled);
/* Verify we haven't reached the limit of 32 available output IDs */
assert(ffs(~compositor->output_id_pool) > 0);
/* Invert the output id pool and look for the lowest numbered
* switch (the least significant bit). Take that bit's position
* as our ID, and mark it used in the compositor's output_id_pool.
*/
output->id = ffs(~compositor->output_id_pool) - 1;
compositor->output_id_pool |= 1u << output->id;
wl_list_remove(&output->link);
wl_list_insert(compositor->output_list.prev, &output->link);
output->enabled = true;
@ -4532,7 +4545,6 @@ weston_output_transform_coordinate(struct weston_output *output,
* Removes the repaint timer.
* Destroys the Wayland global assigned to the output.
* Destroys pixman regions allocated to the output.
* Deallocates output's ID and updates compositor's output_id_pool.
*/
static void
weston_output_enable_undo(struct weston_output *output)
@ -4541,7 +4553,6 @@ weston_output_enable_undo(struct weston_output *output)
pixman_region32_fini(&output->region);
pixman_region32_fini(&output->previous_damage);
output->compositor->output_id_pool &= ~(1u << output->id);
}
/** Removes output from compositor's list of enabled outputs
@ -4566,6 +4577,8 @@ weston_output_enable_undo(struct weston_output *output)
* - wl_output protocol objects referencing this weston_output
* are made inert.
*
* - The output's internal ID is released.
*
* \memberof weston_output
* \internal
*/
@ -4598,6 +4611,9 @@ weston_compositor_remove_output(struct weston_output *output)
wl_resource_for_each(resource, &output->resource_list) {
wl_resource_set_destructor(resource, NULL);
}
compositor->output_id_pool &= ~(1u << output->id);
output->id = 0xffffffff; /* invalid */
}
/** Sets the output scale for a given output.
@ -4768,9 +4784,6 @@ weston_output_enable(struct weston_output *output)
/* Make sure we have a transform set */
assert(output->transform != UINT32_MAX);
/* Verify we haven't reached the limit of 32 available output IDs */
assert(ffs(~c->output_id_pool) > 0);
output->x = x;
output->y = y;
output->dirty = 1;
@ -4788,13 +4801,6 @@ weston_output_enable(struct weston_output *output)
wl_list_init(&output->resource_list);
wl_list_init(&output->feedback_list);
/* Invert the output id pool and look for the lowest numbered
* switch (the least significant bit). Take that bit's position
* as our ID, and mark it used in the compositor's output_id_pool.
*/
output->id = ffs(~output->compositor->output_id_pool) - 1;
output->compositor->output_id_pool |= 1u << output->id;
output->global =
wl_global_create(c->wl_display, &wl_output_interface, 3,
output, bind_output);