a93a93d007
Bug 1495 - Timelines run 4% short Previously the timelines were timed by calculating the interval between each frame stored as an integer number of milliseconds so some precision is lost. For example, requesting 60 frames per second gets converted to 16 ms per frame which is actually 62.5 frames per second. This makes the timeline shorter by 4%. This patch merges the common code for timing from the timeout pools and frame sources into an internal clutter-timeout-interval file. This stores the interval directly as the FPS and counts the number of frames that have been reached instead of the elapsed time.
173 lines
6.6 KiB
C
173 lines
6.6 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 OpenedHand
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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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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#ifndef __CLUTTER_MAIN_H__
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#define __CLUTTER_MAIN_H__
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#include <clutter/clutter-actor.h>
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#include <clutter/clutter-stage.h>
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#include <pango/pango.h>
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G_BEGIN_DECLS
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/**
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* CLUTTER_INIT_ERROR:
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*
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* #GError domain for #ClutterInitError
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*/
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#define CLUTTER_INIT_ERROR (clutter_init_error_quark ())
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/**
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* ClutterInitError:
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* @CLUTTER_INIT_SUCCESS: Initialisation successful
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* @CLUTTER_INIT_ERROR_UNKNOWN: Unknown error
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* @CLUTTER_INIT_ERROR_THREADS: Thread initialisation failed
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* @CLUTTER_INIT_ERROR_BACKEND: Backend initialisation failed
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* @CLUTTER_INIT_ERROR_INTERNAL: Internal error
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*
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* Error conditions returned by clutter_init() and clutter_init_with_args().
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*
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* Since: 0.2
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*/
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typedef enum {
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CLUTTER_INIT_SUCCESS = 1,
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CLUTTER_INIT_ERROR_UNKNOWN = 0,
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CLUTTER_INIT_ERROR_THREADS = -1,
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CLUTTER_INIT_ERROR_BACKEND = -2,
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CLUTTER_INIT_ERROR_INTERNAL = -3
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} ClutterInitError;
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GQuark clutter_init_error_quark (void);
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/**
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* CLUTTER_PRIORITY_REDRAW:
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*
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* Priority of the redraws.
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*
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* Since: 0.8
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*/
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#define CLUTTER_PRIORITY_REDRAW (G_PRIORITY_DEFAULT + 10)
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/**
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* CLUTTER_PRIORITY_TIMELINE:
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*
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* Priority of the timelines.
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*
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* Since: 0.8
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*/
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#define CLUTTER_PRIORITY_TIMELINE (G_PRIORITY_DEFAULT + 30)
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/* Initialisation */
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void clutter_base_init (void);
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ClutterInitError clutter_init (int *argc,
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char ***argv);
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ClutterInitError clutter_init_with_args (int *argc,
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char ***argv,
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const char *parameter_string,
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GOptionEntry *entries,
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const char *translation_domain,
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GError **error);
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GOptionGroup * clutter_get_option_group (void);
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GOptionGroup * clutter_get_option_group_without_init (void);
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/* Mainloop */
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void clutter_main (void);
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void clutter_main_quit (void);
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gint clutter_main_level (void);
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void clutter_redraw (ClutterStage *stage);
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void clutter_do_event (ClutterEvent *event);
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/* Debug utility functions */
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gboolean clutter_get_debug_enabled (void);
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gboolean clutter_get_show_fps (void);
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gulong clutter_get_timestamp (void);
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/* Threading functions */
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void clutter_threads_init (void);
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void clutter_threads_enter (void);
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void clutter_threads_leave (void);
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void clutter_threads_set_lock_functions (GCallback enter_fn,
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GCallback leave_fn);
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guint clutter_threads_add_idle (GSourceFunc func,
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gpointer data);
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guint clutter_threads_add_idle_full (gint priority,
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GSourceFunc func,
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gpointer data,
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GDestroyNotify notify);
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guint clutter_threads_add_timeout (guint interval,
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GSourceFunc func,
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gpointer data);
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guint clutter_threads_add_timeout_full (gint priority,
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guint interval,
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GSourceFunc func,
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gpointer data,
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GDestroyNotify notify);
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guint clutter_threads_add_frame_source (guint fps,
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GSourceFunc func,
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gpointer data);
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guint clutter_threads_add_frame_source_full
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(gint priority,
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guint fps,
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GSourceFunc func,
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gpointer data,
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GDestroyNotify notify);
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void clutter_set_motion_events_enabled (gboolean enable);
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gboolean clutter_get_motion_events_enabled (void);
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void clutter_set_motion_events_frequency (guint frequency);
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guint clutter_get_motion_events_frequency (void);
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void clutter_set_default_frame_rate (guint frames_per_sec);
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guint clutter_get_default_frame_rate (void);
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void clutter_grab_pointer (ClutterActor *actor);
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void clutter_ungrab_pointer (void);
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ClutterActor * clutter_get_pointer_grab (void);
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void clutter_grab_keyboard (ClutterActor *actor);
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void clutter_ungrab_keyboard (void);
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ClutterActor * clutter_get_keyboard_grab (void);
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void clutter_clear_glyph_cache (void);
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void clutter_set_font_flags (ClutterFontFlags flags);
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ClutterFontFlags clutter_get_font_flags (void);
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ClutterInputDevice* clutter_get_input_device_for_id (gint id);
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void clutter_grab_pointer_for_device (ClutterActor *actor,
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gint id);
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void clutter_ungrab_pointer_for_device (gint id);
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PangoFontMap * clutter_get_font_map (void);
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G_END_DECLS
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#endif /* _CLUTTER_MAIN_H__ */
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