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/*
Copyright (C) 2016 Jeremy White <jwhite@codeweavers.com>
All rights reserved.
This file is part of x11spice
x11spice is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
x11spice 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with x11spice. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DISPLAY_H_
#define DISPLAY_H_
#include <glib.h>
#include <xcb/xcb.h>
#include <xcb/damage.h>
#include <xcb/shm.h>
struct session_struct;
/*----------------------------------------------------------------------------
** Structure definitions
**--------------------------------------------------------------------------*/
typedef struct {
int shmid; /* if shmid is -1: the shm_segment_t is "empty", other members are undefined */
size_t size;
xcb_shm_seg_t shmseg;
void *shmaddr;
} shm_segment_t;
typedef struct {
shm_segment_t segment;
unsigned int w;
unsigned int h;
unsigned int bytes_per_line;
void *drawable_ptr;
} shm_image_t;
typedef struct {
xcb_connection_t *c;
xcb_window_t root;
unsigned int width;
unsigned int height;
unsigned int depth;
const xcb_query_extension_reply_t *damage_ext;
xcb_damage_damage_t damage;
const xcb_query_extension_reply_t *shm_ext;
const xcb_query_extension_reply_t *xfixes_ext;
shm_image_t *primary;
shm_image_t *fullscreen;
shm_image_t *scanline;
/* The SHM cache holds up to 10 segments, this provides a good cache
* hit rate while keeping memory usage reasonable.
*/
shm_segment_t shm_cache[10];
GMutex shm_cache_mutex;
pthread_t event_thread;
struct session_struct *session;
} display_t;
/*----------------------------------------------------------------------------
** Prototypes
**--------------------------------------------------------------------------*/
int display_open(display_t *d, struct session_struct *session);
void display_close(display_t *display);
int display_create_screen_images(display_t *d);
void display_destroy_screen_images(display_t *d);
int display_start_event_thread(display_t *d);
void display_stop_event_thread(display_t *d);
int display_find_changed_tiles(display_t *d, int row, int *tiles, int tiles_across);
void display_copy_image_into_fullscreen(display_t *d, shm_image_t *shmi, int x, int y);
shm_image_t *create_shm_image(display_t *d, unsigned int w, unsigned int h);
int read_shm_image(display_t *d, shm_image_t *shmi, int x, int y);
void destroy_shm_image(display_t *d, shm_image_t *shmi);
#endif
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