/usr/include/directfb-internal/display/idirectfbsurface.h is in libdirectfb-dev 1.7.7-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(c) Copyright 2012-2013 DirectFB integrated media GmbH
(c) Copyright 2001-2013 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Shimokawa <andi@directfb.org>,
Marek Pikarski <mass@directfb.org>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
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, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef __IDIRECTFBSURFACE_H__
#define __IDIRECTFBSURFACE_H__
#include <directfb.h>
#include <direct/types.h>
#include <fusion/reactor.h>
#include <core/core.h>
#include <core/state.h>
#include <core/CoreGraphicsStateClient.h>
/*
* private data struct of IDirectFBSurface
*/
typedef struct {
DirectLink link;
int ref; /* reference counter */
DFBSurfaceCapabilities caps; /* capabilities */
struct {
/* 'wanted' is passed to GetSubSurface(), it doesn't matter if it's
too large or has negative starting coordinates as long as it
intersects with the 'granted' rectangle of the parent.
'wanted' should be seen as the origin for operations on that
surface. Non sub surfaces have a 'wanted' rectangle
of '{ 0, 0, width, height }'. 'wanted' is calculated just once
during surface creation. */
DFBRectangle wanted;
/* 'granted' is the intersection of the 'wanted' rectangle and the
'granted' one of the parent. If they do not intersect DFB_INVAREA
is returned. For non sub surfaces it's the same as the 'wanted'
rectangle, because it's the rectangle describing the whole
surface. 'granted' is calculated just once during surface
creation */
DFBRectangle granted;
/* 'current' is the intersection of the 'granted' rectangle and the
surface extents. SetClip() and many other functions are limited
by this.
This way sub surface area information is preserved during surface
resizing, e.g. when resizing a window. Calling SetClip() with NULL
causes the clipping region to exactly cover the 'current'
rectangle, also the flag 'clip_set' is cleared causing the
clipping region to be set to the new 'current' after resizing. If
SetClip() is called with a clipping region specified, an
intersection is done with the 'wanted' rectangle that is then
stored in 'clip_wanted' and 'clip_set' is set. However, if there
is no intersection 'DFB_INVARG' is returned, otherwise another
intersection is made with the 'current' rectangle and gets applied
to the surface's state.
Each resize, after the 'current' rectangle is updated, the
clipping region is set to NULL or 'clip_wanted' depending on
'clip_set'. This way even clipping regions are restored or
extended automatically. It's now possible to create a fullscreen
primary and call SetVideoMode() with different resolutions or
pixelformats several times without the need for updating the
primary surface by recreating it */
DFBRectangle current; /* currently available area */
DFBInsets insets; /* actually set by the window manager */
} area;
bool limit_set; /* greanted rectangle set?
(GetSubSurface called with rect != NULL) */
bool clip_set; /* fixed clip set? (SetClip called
with clip != NULL) */
DFBRegion clip_wanted; /* last region passed to SetClip
intersected by wanted area,
only valid if clip_set != 0 */
CoreSurface *surface; /* buffer to show */
bool locked; /* which buffer is locked? */
CoreSurfaceBufferLock lock;
IDirectFBFont *font; /* font to use */
CardState state; /* render state to use */
DFBTextEncodingID encoding; /* text encoding */
struct {
u8 r; /* red component */
u8 g; /* green component */
u8 b; /* blue component */
u32 value; /* r/g/b in surface's format */
} src_key; /* src key for blitting from
this surface */
struct {
u8 r; /* red component */
u8 g; /* green component */
u8 b; /* blue component */
u32 value; /* r/g/b in surface's format */
} dst_key; /* dst key for blitting to
this surface */
Reaction reaction;
CoreDFB *core;
IDirectFB *idirectfb;
IDirectFBSurface *parent;
DirectLink *children_data;
pthread_mutex_t children_lock;
CoreGraphicsStateClient state_client;
CoreMemoryPermission *memory_permissions[3];
unsigned int memory_permissions_count;
DirectWaitQueue back_buffer_wq;
DirectMutex back_buffer_lock;
unsigned int frame_ack;
CoreSurfaceClient *surface_client;
unsigned int surface_client_flip_count;
DirectMutex surface_client_lock;
DFBSurfaceStereoEye src_eye;
long long current_frame_time;
DFBFrameTimeConfig frametime_config;
unsigned int local_flip_count;
int local_flip_buffers;
} IDirectFBSurface_data;
/*
* initializes interface struct and private data
*/
DFBResult IDirectFBSurface_Construct( IDirectFBSurface *thiz,
IDirectFBSurface *parent,
DFBRectangle *req_rect,
DFBRectangle *clip_rect,
DFBInsets *insets,
CoreSurface *surface,
DFBSurfaceCapabilities caps,
CoreDFB *core,
IDirectFB *idirectfb );
/*
* destroys surface(s) and frees private data
*/
void IDirectFBSurface_Destruct( IDirectFBSurface *thiz );
/*
* internal
*/
void IDirectFBSurface_StopAll( IDirectFBSurface_data *data );
void IDirectFBSurface_WaitForBackBuffer( IDirectFBSurface_data *data );
#endif
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