340 lines
12 KiB
C
340 lines
12 KiB
C
/*
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* Copyright © 2019 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Olivier Fourdan <ofourdan@redhat.com>
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*/
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#include <xwayland-config.h>
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#include "gcstruct.h"
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#include "xwayland-window.h"
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#include "xwayland-pixmap.h"
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#include "xwayland-screen.h"
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#include "xwayland-window-buffers.h"
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#define BUFFER_TIMEOUT 1 * 1000 /* ms */
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struct xwl_window_buffer {
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struct xwl_window *xwl_window;
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PixmapPtr pixmap;
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RegionPtr damage_region;
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Bool recycle_on_release;
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uint32_t time;
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struct xorg_list link_buffer;
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};
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static Bool
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copy_pixmap_area(PixmapPtr src_pixmap, PixmapPtr dst_pixmap,
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int x, int y, int width, int height)
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{
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GCPtr pGC;
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pGC = GetScratchGC(dst_pixmap->drawable.depth,
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dst_pixmap->drawable.pScreen);
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if (pGC) {
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ValidateGC(&dst_pixmap->drawable, pGC);
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(void) (*pGC->ops->CopyArea) (&src_pixmap->drawable,
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&dst_pixmap->drawable,
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pGC,
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x, y,
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width, height,
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x, y);
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FreeScratchGC(pGC);
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return TRUE;
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}
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return FALSE;
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}
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static struct xwl_window_buffer *
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xwl_window_buffer_new(struct xwl_window *xwl_window)
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{
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struct xwl_window_buffer *xwl_window_buffer;
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xwl_window_buffer = calloc (1, sizeof(struct xwl_window_buffer));
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if (!xwl_window_buffer)
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return NULL;
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xwl_window_buffer->xwl_window = xwl_window;
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xwl_window_buffer->damage_region = RegionCreate(NullBox, 1);
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xwl_window_buffer->pixmap = NullPixmap;
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xorg_list_append(&xwl_window_buffer->link_buffer,
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&xwl_window->window_buffers_available);
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return xwl_window_buffer;
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}
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static void
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xwl_window_buffer_destroy_pixmap(struct xwl_window_buffer *xwl_window_buffer)
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{
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ScreenPtr pScreen = xwl_window_buffer->pixmap->drawable.pScreen;
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xwl_pixmap_del_buffer_release_cb(xwl_window_buffer->pixmap);
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(*pScreen->DestroyPixmap) (xwl_window_buffer->pixmap);
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xwl_window_buffer->pixmap = NullPixmap;
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}
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static void
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xwl_window_buffer_dispose(struct xwl_window_buffer *xwl_window_buffer)
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{
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RegionDestroy(xwl_window_buffer->damage_region);
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if (xwl_window_buffer->pixmap)
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xwl_window_buffer_destroy_pixmap (xwl_window_buffer);
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xorg_list_del(&xwl_window_buffer->link_buffer);
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free(xwl_window_buffer);
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}
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static void
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xwl_window_buffer_recycle(struct xwl_window_buffer *xwl_window_buffer)
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{
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RegionEmpty(xwl_window_buffer->damage_region);
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xwl_window_buffer->recycle_on_release = FALSE;
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if (xwl_window_buffer->pixmap)
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xwl_window_buffer_destroy_pixmap (xwl_window_buffer);
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}
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static void
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xwl_window_buffer_add_damage_region(struct xwl_window *xwl_window,
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RegionPtr damage_region)
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{
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struct xwl_window_buffer *xwl_window_buffer;
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/* Add damage region to all buffers */
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xorg_list_for_each_entry(xwl_window_buffer,
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&xwl_window->window_buffers_available,
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link_buffer) {
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RegionUnion(xwl_window_buffer->damage_region,
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xwl_window_buffer->damage_region,
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damage_region);
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}
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xorg_list_for_each_entry(xwl_window_buffer,
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&xwl_window->window_buffers_unavailable,
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link_buffer) {
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RegionUnion(xwl_window_buffer->damage_region,
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xwl_window_buffer->damage_region,
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damage_region);
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}
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}
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static struct xwl_window_buffer *
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xwl_window_buffer_get_available(struct xwl_window *xwl_window)
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{
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if (xorg_list_is_empty(&xwl_window->window_buffers_available))
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return xwl_window_buffer_new(xwl_window);
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return xorg_list_last_entry(&xwl_window->window_buffers_available,
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struct xwl_window_buffer,
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link_buffer);
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}
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static CARD32
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xwl_window_buffer_timer_callback(OsTimerPtr timer, CARD32 time, void *arg)
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{
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struct xwl_window *xwl_window = arg;
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struct xwl_window_buffer *xwl_window_buffer, *tmp;
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/* Dispose older available buffers */
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xorg_list_for_each_entry_safe(xwl_window_buffer, tmp,
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&xwl_window->window_buffers_available,
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link_buffer) {
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if ((int64_t)(time - xwl_window_buffer->time) >= BUFFER_TIMEOUT)
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xwl_window_buffer_dispose(xwl_window_buffer);
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}
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/* If there are still available buffers, re-arm the timer */
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if (!xorg_list_is_empty(&xwl_window->window_buffers_available)) {
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struct xwl_window_buffer *oldest_available_buffer =
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xorg_list_first_entry(&xwl_window->window_buffers_available,
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struct xwl_window_buffer,
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link_buffer);
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return oldest_available_buffer->time + BUFFER_TIMEOUT - time;
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}
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/* Don't re-arm the timer */
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return 0;
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}
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static void
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xwl_window_buffer_release_callback(void *data)
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{
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struct xwl_window_buffer *xwl_window_buffer = data;
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struct xwl_window *xwl_window = xwl_window_buffer->xwl_window;
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struct xwl_window_buffer *oldest_available_buffer;
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if (xwl_window_buffer->recycle_on_release)
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xwl_window_buffer_recycle(xwl_window_buffer);
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/* We append the buffers to the end of the list, as we pick the last
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* entry again when looking for new available buffers, that means the
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* least used buffers will remain at the beginning of the list so that
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* they can be garbage collected automatically after some time unused.
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*/
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xorg_list_del(&xwl_window_buffer->link_buffer);
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xorg_list_append(&xwl_window_buffer->link_buffer,
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&xwl_window->window_buffers_available);
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xwl_window_buffer->time = (uint32_t) GetTimeInMillis();
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oldest_available_buffer =
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xorg_list_first_entry(&xwl_window->window_buffers_available,
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struct xwl_window_buffer,
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link_buffer);
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/* Schedule next timer based on time of the oldest buffer */
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xwl_window->window_buffers_timer =
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TimerSet(xwl_window->window_buffers_timer,
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TimerAbsolute,
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oldest_available_buffer->time + BUFFER_TIMEOUT,
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&xwl_window_buffer_timer_callback,
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xwl_window);
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}
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void
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xwl_window_buffers_init(struct xwl_window *xwl_window)
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{
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xorg_list_init(&xwl_window->window_buffers_available);
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xorg_list_init(&xwl_window->window_buffers_unavailable);
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}
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void
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xwl_window_buffers_recycle(struct xwl_window *xwl_window)
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{
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struct xwl_window_buffer *xwl_window_buffer, *tmp;
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/* Dispose available buffers */
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xorg_list_for_each_entry_safe(xwl_window_buffer, tmp,
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&xwl_window->window_buffers_available,
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link_buffer) {
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xwl_window_buffer_dispose(xwl_window_buffer);
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}
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if (xwl_window->window_buffers_timer)
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TimerCancel(xwl_window->window_buffers_timer);
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/* Mark the others for recycle on release */
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xorg_list_for_each_entry(xwl_window_buffer,
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&xwl_window->window_buffers_unavailable,
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link_buffer) {
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xwl_window_buffer->recycle_on_release = TRUE;
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}
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}
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void
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xwl_window_buffers_dispose(struct xwl_window *xwl_window)
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{
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struct xwl_window_buffer *xwl_window_buffer, *tmp;
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xorg_list_for_each_entry_safe(xwl_window_buffer, tmp,
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&xwl_window->window_buffers_available,
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link_buffer) {
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xwl_window_buffer_dispose(xwl_window_buffer);
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}
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xorg_list_for_each_entry_safe(xwl_window_buffer, tmp,
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&xwl_window->window_buffers_unavailable,
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link_buffer) {
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xwl_window_buffer_dispose(xwl_window_buffer);
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}
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if (xwl_window->window_buffers_timer) {
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TimerFree(xwl_window->window_buffers_timer);
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xwl_window->window_buffers_timer = 0;
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}
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}
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PixmapPtr
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xwl_window_buffers_get_pixmap(struct xwl_window *xwl_window,
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RegionPtr damage_region)
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{
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struct xwl_screen *xwl_screen = xwl_window->xwl_screen;
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struct xwl_window_buffer *xwl_window_buffer;
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PixmapPtr window_pixmap;
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RegionPtr full_damage;
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window_pixmap = (*xwl_screen->screen->GetWindowPixmap) (xwl_window->window);
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xwl_window_buffer = xwl_window_buffer_get_available(xwl_window);
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if (!xwl_window_buffer)
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return window_pixmap;
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xwl_window_buffer_add_damage_region(xwl_window, damage_region);
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full_damage = xwl_window_buffer->damage_region;
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if (xwl_window_buffer->pixmap) {
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BoxPtr pBox = RegionRects(full_damage);
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int nBox = RegionNumRects(full_damage);
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while (nBox--) {
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if (!copy_pixmap_area(window_pixmap,
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xwl_window_buffer->pixmap,
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pBox->x1 + xwl_window->window->borderWidth,
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pBox->y1 + xwl_window->window->borderWidth,
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pBox->x2 - pBox->x1,
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pBox->y2 - pBox->y1))
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return window_pixmap;
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pBox++;
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}
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} else {
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xwl_window_buffer->pixmap =
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(*xwl_screen->screen->CreatePixmap) (window_pixmap->drawable.pScreen,
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window_pixmap->drawable.width,
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window_pixmap->drawable.height,
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window_pixmap->drawable.depth,
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CREATE_PIXMAP_USAGE_BACKING_PIXMAP);
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if (!xwl_window_buffer->pixmap)
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return window_pixmap;
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if (!copy_pixmap_area(window_pixmap,
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xwl_window_buffer->pixmap,
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0, 0,
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window_pixmap->drawable.width,
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window_pixmap->drawable.height)) {
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xwl_window_buffer_recycle(xwl_window_buffer);
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return window_pixmap;
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}
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}
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RegionEmpty(xwl_window_buffer->damage_region);
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xwl_pixmap_set_buffer_release_cb(xwl_window_buffer->pixmap,
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xwl_window_buffer_release_callback,
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xwl_window_buffer);
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xorg_list_del(&xwl_window_buffer->link_buffer);
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xorg_list_append(&xwl_window_buffer->link_buffer,
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&xwl_window->window_buffers_unavailable);
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if (xorg_list_is_empty(&xwl_window->window_buffers_available))
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TimerCancel(xwl_window->window_buffers_timer);
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return xwl_window_buffer->pixmap;
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}
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