ed90c6fed9
This updates the cogl_poll_ apis to allow dispatching events before we have a CoglContext and to also enables pollfd state to be changed in a more add-hoc way by different Cogl components by replacing the winsys->get_poll_info with _cogl_poll_renderer_add/remove_fd functions and a winsys->get_dispatch_timeout vfunc. One of the intentions here is that applications should be able to run their mainloop before creating a CoglContext to potentially get events relating to CoglOutputs. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 667e58c9cb2662aef5f44e580a9eda42dc8d0176)
143 lines
3.7 KiB
C
143 lines
3.7 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2012 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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* Authors:
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* Neil Roberts <neil@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl-poll.h"
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#include "cogl-poll-private.h"
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#include "cogl-winsys-private.h"
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#include "cogl-renderer-private.h"
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#include "cogl-context-private.h"
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int
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cogl_poll_renderer_get_info (CoglRenderer *renderer,
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CoglPollFD **poll_fds,
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int *n_poll_fds,
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int64_t *timeout)
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{
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const CoglWinsysVtable *winsys;
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_COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), 0);
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_COGL_RETURN_VAL_IF_FAIL (poll_fds != NULL, 0);
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_COGL_RETURN_VAL_IF_FAIL (n_poll_fds != NULL, 0);
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_COGL_RETURN_VAL_IF_FAIL (timeout != NULL, 0);
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*poll_fds = (void *)renderer->poll_fds->data;
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*n_poll_fds = renderer->poll_fds->len;
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/* NB: This will be NULL until the renderer has been connected,
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* associated with a CoglDisplay and then a CoglContext is
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* created from that display. */
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if (renderer->context)
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{
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if (!COGL_TAILQ_EMPTY (&renderer->context->onscreen_events_queue))
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{
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*timeout = 0;
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return renderer->poll_fds_age;
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}
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}
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winsys = renderer->winsys_vtable;
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if (winsys->get_dispatch_timeout)
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*timeout = winsys->get_dispatch_timeout (renderer);
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else
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*timeout = -1;
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return renderer->poll_fds_age;
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}
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void
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cogl_poll_renderer_dispatch (CoglRenderer *renderer,
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const CoglPollFD *poll_fds,
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int n_poll_fds)
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{
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const CoglWinsysVtable *winsys;
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_COGL_RETURN_IF_FAIL (cogl_is_renderer (renderer));
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/* FIXME: arbitrary cogl components should just be able to queue
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* idle functions so that we don't have to explicitly poke into
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* CoglContext here and understand about the CoglOnscreen event
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* queue... */
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if (renderer->context)
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{
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CoglContext *context = renderer->context;
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if (!COGL_TAILQ_EMPTY (&context->onscreen_events_queue))
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_cogl_dispatch_onscreen_events (context);
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}
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winsys = renderer->winsys_vtable;
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if (winsys->poll_dispatch)
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winsys->poll_dispatch (renderer, poll_fds, n_poll_fds);
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}
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static int
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find_pollfd (CoglRenderer *renderer, int fd)
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{
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int i;
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for (i = 0; i < renderer->poll_fds->len; i++)
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{
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CoglPollFD *pollfd = &g_array_index (renderer->poll_fds, CoglPollFD, i);
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if (pollfd->fd == fd)
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return i;
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}
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return -1;
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}
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void
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_cogl_poll_renderer_remove_fd (CoglRenderer *renderer, int fd)
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{
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int i = find_pollfd (renderer, fd);
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if (i < 0)
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return;
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g_array_remove_index_fast (renderer->poll_fds, i);
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renderer->poll_fds_age++;
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}
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void
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_cogl_poll_renderer_add_fd (CoglRenderer *renderer,
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int fd,
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CoglPollFDEvent events)
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{
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CoglPollFD pollfd = {
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fd,
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events
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};
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_cogl_poll_renderer_remove_fd (renderer, fd);
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g_array_append_val (renderer->poll_fds, pollfd);
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renderer->poll_fds_age++;
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}
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