mutter/cogl/cogl-frame-info-private.h
Owen W. Taylor 24733abf68 onscreen: Add CoglFrameInfo and _add_frame_callback() api
Add a CoglFrameInfo object that tracks timing information for frames
that are drawn. We track a frame counter and frame timing information
for each CoglOnscreen. Internally a CoglFrameInfo is automatically
created for each frame, delimited by cogl_onscreen_swap_buffers() or
cogl_onscreen_swap_region() calls.

CoglFrameInfos are delivered to applications via frame event callbacks
that can be registered with a new cogl_onscreen_add_frame_callback()
api. Two initial event types (dispatched on all platforms) have been
defined; a _SYNC event used for throttling the frame rate of
applications and a _COMPLETE event used so signify the end of a frame.

Note: This new _add_frame_callback() api makes the
cogl_onscreen_add_swap_complete_callback() api redundant and so it
should be considered deprecated. Since the _add_swap_complete_callback()
api is still experimental api, we will be looking to quickly migrate
users to the new api so we can remove the old api.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 700401667db2522045e4623d78797b17f9184501)
2013-01-30 20:09:49 +00:00

44 lines
1.1 KiB
C

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2012 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_FRAME_INFO_PRIVATE_H
#define __COGL_FRAME_INFO_PRIVATE_H
#include "cogl-frame-info.h"
#include "cogl-object-private.h"
struct _CoglFrameInfo
{
CoglObject _parent;
int64_t frame_counter;
int64_t presentation_time;
float refresh_rate;
CoglOutput *output;
};
CoglFrameInfo *_cogl_frame_info_new (void);
#endif /* __COGL_FRAME_INFO_PRIVATE_H */