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/*
* Copyright © 2013 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifndef _PRESENT_H_
#define _PRESENT_H_
#include <X11/extensions/presentproto.h>
#include "randrstr.h"
#include "presentext.h"
typedef struct present_vblank present_vblank_rec, *present_vblank_ptr;
/* Return the current CRTC for 'window'.
*/
typedef RRCrtcPtr (*present_get_crtc_ptr) (WindowPtr window);
/* Return the current ust/msc for 'crtc'
*/
typedef int (*present_get_ust_msc_ptr) (RRCrtcPtr crtc, uint64_t *ust, uint64_t *msc);
/* Queue callback on 'crtc' for time 'msc'. Call present_event_notify with 'event_id'
* at or after 'msc'. Return false if it didn't happen (which might occur if 'crtc'
* is not currently generating vblanks).
*/
typedef Bool (*present_queue_vblank_ptr) (RRCrtcPtr crtc,
uint64_t event_id,
uint64_t msc);
/* Abort pending vblank. The extension is no longer interested in
* 'event_id' which was to be notified at 'msc'. If possible, the
* driver is free to de-queue the notification.
*/
typedef void (*present_abort_vblank_ptr) (RRCrtcPtr crtc, uint64_t event_id, uint64_t msc);
/* Flush pending drawing on 'window' to the hardware.
*/
typedef void (*present_flush_ptr) (WindowPtr window);
/* Check if 'pixmap' is suitable for flipping to 'window'.
*/
typedef Bool (*present_check_flip_ptr) (RRCrtcPtr crtc, WindowPtr window, PixmapPtr pixmap, Bool sync_flip);
/* Flip pixmap, return false if it didn't happen.
*
* 'crtc' is to be used for any necessary synchronization.
*
* 'sync_flip' requests that the flip be performed at the next
* vertical blank interval to avoid tearing artifacts. If false, the
* flip should be performed as soon as possible.
*
* present_event_notify should be called with 'event_id' when the flip
* occurs
*/
typedef Bool (*present_flip_ptr) (RRCrtcPtr crtc,
uint64_t event_id,
uint64_t target_msc,
PixmapPtr pixmap,
Bool sync_flip);
/* "unflip" back to the regular screen scanout buffer
*
* present_event_notify should be called with 'event_id' when the unflip occurs.
*/
typedef void (*present_unflip_ptr) (ScreenPtr screen,
uint64_t event_id);
#define PRESENT_SCREEN_INFO_VERSION 0
typedef struct present_screen_info {
uint32_t version;
present_get_crtc_ptr get_crtc;
present_get_ust_msc_ptr get_ust_msc;
present_queue_vblank_ptr queue_vblank;
present_abort_vblank_ptr abort_vblank;
present_flush_ptr flush;
uint32_t capabilities;
present_check_flip_ptr check_flip;
present_flip_ptr flip;
present_unflip_ptr unflip;
} present_screen_info_rec, *present_screen_info_ptr;
/*
* Called when 'event_id' occurs. 'ust' and 'msc' indicate when the
* event actually happened
*/
extern _X_EXPORT void
present_event_notify(uint64_t event_id, uint64_t ust, uint64_t msc);
/* 'crtc' has been turned off, so any pending events will never occur.
*/
extern _X_EXPORT void
present_event_abandon(RRCrtcPtr crtc);
extern _X_EXPORT Bool
present_screen_init(ScreenPtr screen, present_screen_info_ptr info);
#endif /* _PRESENT_H_ */
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