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847c856effde482c13cdefcdca8176cee3bf67c4
xserver_xsdl/hw/kdrive/ephyr/hostx.c
Eric Anholt 847c856eff ephyr: Move the host screen info into the kdrive screen private. 
We can include xcb bits from the same place as server headers, so
there's no need to hide them any more.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Julien Cristau <jcristau@debian.org>
2013-09-03 14:34:48 -07:00

1433 lines
44 KiB
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/*
* Xephyr - A kdrive X server thats runs in a host X window.
* Authored by Matthew Allum <mallum@o-hand.com>
*
* Copyright © 2004 Nokia
*
* 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 Nokia not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Nokia makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* NOKIA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL NOKIA 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.
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "hostx.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h> /* for memset */
#include <errno.h>
#include <time.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/time.h>
#include <X11/keysym.h>
#include <xcb/xcb.h>
#include <xcb/xproto.h>
#include <xcb/xcb_icccm.h>
#include <xcb/xcb_aux.h>
#include <xcb/shm.h>
#include <xcb/xcb_image.h>
#include <xcb/shape.h>
#include <xcb/xcb_keysyms.h>
#ifdef XF86DRI
#include <xcb/xf86dri.h>
#include <xcb/glx.h>
#endif /* XF86DRI */
#include "ephyrlog.h"
#include "ephyr.h"
struct EphyrHostXVars {
char *server_dpy_name;
xcb_connection_t *conn;
int screen;
xcb_visualtype_t *visual;
Window winroot;
xcb_gcontext_t gc;
int depth;
Bool use_host_cursor;
Bool use_fullscreen;
Bool have_shm;
int n_screens;
KdScreenInfo **screens;
long damage_debug_msec;
unsigned long cmap[256];
};
/* memset ( missing> ) instead of below */
/*static EphyrHostXVars HostX = { "?", 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};*/
static EphyrHostXVars HostX;
static int HostXWantDamageDebug = 0;
extern EphyrKeySyms ephyrKeySyms;
extern int monitorResolution;
extern Bool EphyrWantResize;
char *ephyrResName = NULL;
int ephyrResNameFromCmd = 0;
char *ephyrTitle = NULL;
static void
hostx_set_fullscreen_hint(void);
#define host_depth_matches_server(_vars) (HostX.depth == (_vars)->server_depth)
int
hostx_want_screen_size(KdScreenInfo *screen, int *width, int *height)
{
EphyrScrPriv *scrpriv = screen->driver;
if (scrpriv && (scrpriv->win_pre_existing != None ||
HostX.use_fullscreen == TRUE)) {
*width = scrpriv->win_width;
*height = scrpriv->win_height;
return 1;
}
return 0;
}
void
hostx_add_screen(KdScreenInfo *screen, unsigned long win_id, int screen_num)
{
EphyrScrPriv *scrpriv = screen->driver;
int index = HostX.n_screens;
HostX.n_screens += 1;
HostX.screens = realloc(HostX.screens,
HostX.n_screens * sizeof(HostX.screens[0]));
HostX.screens[index] = screen;
scrpriv->screen = screen;
scrpriv->win_pre_existing = win_id;
}
void
hostx_set_display_name(char *name)
{
HostX.server_dpy_name = strdup(name);
}
void
hostx_set_screen_number(KdScreenInfo *screen, int number)
{
EphyrScrPriv *scrpriv = screen->driver;
if (scrpriv) {
scrpriv->mynum = number;
hostx_set_win_title(screen, "");
}
}
void
hostx_set_win_title(KdScreenInfo *screen, const char *extra_text)
{
EphyrScrPriv *scrpriv = screen->driver;
if (!scrpriv)
return;
if (ephyrTitle) {
xcb_icccm_set_wm_name(HostX.conn,
scrpriv->win,
XCB_ATOM_STRING,
8,
strlen(ephyrTitle),
ephyrTitle);
} else {
#define BUF_LEN 256
char buf[BUF_LEN + 1];
memset(buf, 0, BUF_LEN + 1);
snprintf(buf, BUF_LEN, "Xephyr on %s.%d %s",
HostX.server_dpy_name,
scrpriv->mynum, (extra_text != NULL) ? extra_text : "");
xcb_icccm_set_wm_name(HostX.conn,
scrpriv->win,
XCB_ATOM_STRING,
8,
strlen(buf),
buf);
}
}
int
hostx_want_host_cursor(void)
{
return HostX.use_host_cursor;
}
void
hostx_use_host_cursor(void)
{
HostX.use_host_cursor = TRUE;
}
int
hostx_want_preexisting_window(KdScreenInfo *screen)
{
EphyrScrPriv *scrpriv = screen->driver;
if (scrpriv && scrpriv->win_pre_existing) {
return 1;
}
else {
return 0;
}
}
void
hostx_use_fullscreen(void)
{
HostX.use_fullscreen = TRUE;
}
int
hostx_want_fullscreen(void)
{
return HostX.use_fullscreen;
}
static xcb_intern_atom_cookie_t cookie_WINDOW_STATE,
cookie_WINDOW_STATE_FULLSCREEN;
static void
hostx_set_fullscreen_hint(void)
{
xcb_atom_t atom_WINDOW_STATE, atom_WINDOW_STATE_FULLSCREEN;
int index;
xcb_intern_atom_reply_t *reply;
reply = xcb_intern_atom_reply(HostX.conn, cookie_WINDOW_STATE, NULL);
atom_WINDOW_STATE = reply->atom;
free(reply);
reply = xcb_intern_atom_reply(HostX.conn, cookie_WINDOW_STATE_FULLSCREEN,
NULL);
atom_WINDOW_STATE_FULLSCREEN = reply->atom;
free(reply);
for (index = 0; index < HostX.n_screens; index++) {
EphyrScrPriv *scrpriv = HostX.screens[index]->driver;
xcb_change_property(HostX.conn,
PropModeReplace,
scrpriv->win,
atom_WINDOW_STATE,
XCB_ATOM_ATOM,
32,
1,
&atom_WINDOW_STATE_FULLSCREEN);
}
}
static void
hostx_toggle_damage_debug(void)
{
HostXWantDamageDebug ^= 1;
}
void
hostx_handle_signal(int signum)
{
hostx_toggle_damage_debug();
EPHYR_DBG("Signal caught. Damage Debug:%i\n", HostXWantDamageDebug);
}
void
hostx_use_resname(char *name, int fromcmd)
{
ephyrResName = name;
ephyrResNameFromCmd = fromcmd;
}
void
hostx_set_title(char *title)
{
ephyrTitle = title;
}
#ifdef __SUNPRO_C
/* prevent "Function has no return statement" error for x_io_error_handler */
#pragma does_not_return(exit)
#endif
int
hostx_init(void)
{
uint32_t attr;
xcb_cursor_t empty_cursor;
xcb_pixmap_t cursor_pxm;
uint16_t red, green, blue;
uint32_t pixel;
int index;
char *tmpstr;
char *class_hint;
size_t class_len;
const xcb_query_extension_reply_t *shm_rep;
xcb_screen_t *xscreen;
attr =
XCB_EVENT_MASK_BUTTON_PRESS
| XCB_EVENT_MASK_BUTTON_RELEASE
| XCB_EVENT_MASK_POINTER_MOTION
| XCB_EVENT_MASK_KEY_PRESS
| XCB_EVENT_MASK_KEY_RELEASE
| XCB_EVENT_MASK_EXPOSURE
| XCB_EVENT_MASK_STRUCTURE_NOTIFY;
EPHYR_DBG("mark");
if ((HostX.conn = xcb_connect(NULL, &HostX.screen)) == NULL) {
fprintf(stderr, "\nXephyr cannot open host display. Is DISPLAY set?\n");
exit(1);
}
xscreen = xcb_aux_get_screen(HostX.conn, HostX.screen);
HostX.winroot = xscreen->root;
HostX.gc = xcb_generate_id(HostX.conn);
HostX.depth = xscreen->root_depth;
HostX.visual = xcb_aux_find_visual_by_id(xscreen, xscreen->root_visual);
xcb_create_gc(HostX.conn, HostX.gc, HostX.winroot, 0, NULL);
cookie_WINDOW_STATE = xcb_intern_atom(HostX.conn, FALSE,
strlen("_NET_WM_STATE"),
"_NET_WM_STATE");
cookie_WINDOW_STATE_FULLSCREEN =
xcb_intern_atom(HostX.conn, FALSE,
strlen("_NET_WM_STATE_FULLSCREEN"),
"_NET_WM_STATE_FULLSCREEN");
for (index = 0; index < HostX.n_screens; index++) {
KdScreenInfo *screen = HostX.screens[index];
EphyrScrPriv *scrpriv = screen->driver;
scrpriv->win = xcb_generate_id(HostX.conn);
scrpriv->server_depth = HostX.depth;
scrpriv->ximg = NULL;
if (scrpriv->win_pre_existing != XCB_WINDOW_NONE) {
xcb_get_geometry_reply_t *prewin_geom;
xcb_get_geometry_cookie_t cookie;
xcb_generic_error_t *e = NULL;
/* Get screen size from existing window */
cookie = xcb_get_geometry(HostX.conn,
scrpriv->win_pre_existing);
prewin_geom = xcb_get_geometry_reply(HostX.conn, cookie, &e);
if (e) {
free(e);
free(prewin_geom);
fprintf (stderr, "\nXephyr -parent window' does not exist!\n");
exit (1);
}
scrpriv->win_width = prewin_geom->width;
scrpriv->win_height = prewin_geom->height;
free(prewin_geom);
xcb_create_window(HostX.conn,
XCB_COPY_FROM_PARENT,
scrpriv->win,
scrpriv->win_pre_existing,
0,0,
scrpriv->win_width,
scrpriv->win_height,
0,
XCB_WINDOW_CLASS_COPY_FROM_PARENT,
XCB_COPY_FROM_PARENT,
XCB_CW_EVENT_MASK,
&attr);
}
else {
xcb_create_window(HostX.conn,
XCB_COPY_FROM_PARENT,
scrpriv->win,
HostX.winroot,
0,0,100,100, /* will resize */
0,
XCB_WINDOW_CLASS_COPY_FROM_PARENT,
XCB_COPY_FROM_PARENT,
XCB_CW_EVENT_MASK,
&attr);
hostx_set_win_title(screen,
"(ctrl+shift grabs mouse and keyboard)");
if (HostX.use_fullscreen) {
scrpriv->win_width = xscreen->width_in_pixels;
scrpriv->win_height = xscreen->height_in_pixels;
hostx_set_fullscreen_hint();
}
tmpstr = getenv("RESOURCE_NAME");
if (tmpstr && (!ephyrResNameFromCmd))
ephyrResName = tmpstr;
class_len = strlen(ephyrResName) + 1 + strlen("Xephyr") + 1;
class_hint = malloc(class_len);
if (class_hint) {
strcpy(class_hint, ephyrResName);
strcpy(class_hint + strlen(ephyrResName) + 1, "Xephyr");
xcb_change_property(HostX.conn,
XCB_PROP_MODE_REPLACE,
scrpriv->win,
XCB_ATOM_WM_CLASS,
XCB_ATOM_STRING,
8,
class_len,
class_hint);
free(class_hint);
}
}
}
if (!xcb_aux_parse_color("red", &red, &green, &blue)) {
xcb_lookup_color_cookie_t c =
xcb_lookup_color(HostX.conn, xscreen->default_colormap, 3, "red");
xcb_lookup_color_reply_t *reply =
xcb_lookup_color_reply(HostX.conn, c, NULL);
red = reply->exact_red;
green = reply->exact_green;
blue = reply->exact_blue;
free(reply);
}
{
xcb_alloc_color_cookie_t c = xcb_alloc_color(HostX.conn,
xscreen->default_colormap,
red, green, blue);
xcb_alloc_color_reply_t *r = xcb_alloc_color_reply(HostX.conn, c, NULL);
red = r->red;
green = r->green;
blue = r->blue;
pixel = r->pixel;
free(r);
}
xcb_change_gc(HostX.conn, HostX.gc, XCB_GC_FOREGROUND, &pixel);
if (!hostx_want_host_cursor ()) {
/* Ditch the cursor, we provide our 'own' */
cursor_pxm = xcb_generate_id(HostX.conn);
xcb_create_pixmap(HostX.conn, 1, cursor_pxm, HostX.winroot, 1, 1);
empty_cursor = xcb_generate_id(HostX.conn);
xcb_create_cursor(HostX.conn,
empty_cursor,
cursor_pxm, cursor_pxm,
0,0,0,
0,0,0,
1,1);
for (index = 0; index < HostX.n_screens; index++) {
KdScreenInfo *screen = HostX.screens[index];
EphyrScrPriv *scrpriv = screen->driver;
xcb_change_window_attributes(HostX.conn,
scrpriv->win,
XCB_CW_CURSOR,
&empty_cursor);
}
xcb_free_pixmap(HostX.conn, cursor_pxm);
}
/* Try to get share memory ximages for a little bit more speed */
shm_rep = xcb_get_extension_data(HostX.conn, &xcb_shm_id);
if (!shm_rep || !shm_rep->present || getenv("XEPHYR_NO_SHM")) {
fprintf(stderr, "\nXephyr unable to use SHM XImages\n");
HostX.have_shm = FALSE;
}
else {
/* Really really check we have shm - better way ?*/
xcb_shm_segment_info_t shminfo;
xcb_generic_error_t *e;
xcb_void_cookie_t cookie;
xcb_shm_seg_t shmseg;
HostX.have_shm = TRUE;
shminfo.shmid = shmget(IPC_PRIVATE, 1, IPC_CREAT|0777);
shminfo.shmaddr = shmat(shminfo.shmid,0,0);
shmseg = xcb_generate_id(HostX.conn);
cookie = xcb_shm_attach_checked(HostX.conn, shmseg, shminfo.shmid,
TRUE);
e = xcb_request_check(HostX.conn, cookie);
if (e) {
fprintf(stderr, "\nXephyr unable to use SHM XImages\n");
HostX.have_shm = FALSE;
free(e);
}
shmdt(shminfo.shmaddr);
shmctl(shminfo.shmid, IPC_RMID, 0);
}
xcb_flush(HostX.conn);
/* Setup the pause time between paints when debugging updates */
HostX.damage_debug_msec = 20000; /* 1/50 th of a second */
if (getenv("XEPHYR_PAUSE")) {
HostX.damage_debug_msec = strtol(getenv("XEPHYR_PAUSE"), NULL, 0);
EPHYR_DBG("pause is %li\n", HostX.damage_debug_msec);
}
return 1;
}
int
hostx_get_depth(void)
{
return HostX.depth;
}
int
hostx_get_server_depth(KdScreenInfo *screen)
{
EphyrScrPriv *scrpriv = screen->driver;
return scrpriv ? scrpriv->server_depth : 0;
}
int
hostx_get_bpp(KdScreenInfo *screen)
{
EphyrScrPriv *scrpriv = screen->driver;
if (!scrpriv)
return 0;
if (host_depth_matches_server(scrpriv))
return HostX.visual->bits_per_rgb_value;
else
return scrpriv->server_depth; /*XXX correct ?*/
}
void
hostx_get_visual_masks(KdScreenInfo *screen,
CARD32 *rmsk, CARD32 *gmsk, CARD32 *bmsk)
{
EphyrScrPriv *scrpriv = screen->driver;
if (!scrpriv)
return;
if (host_depth_matches_server(scrpriv)) {
*rmsk = HostX.visual->red_mask;
*gmsk = HostX.visual->green_mask;
*bmsk = HostX.visual->blue_mask;
}
else if (scrpriv->server_depth == 16) {
/* Assume 16bpp 565 */
*rmsk = 0xf800;
*gmsk = 0x07e0;
*bmsk = 0x001f;
}
else {
*rmsk = 0x0;
*gmsk = 0x0;
*bmsk = 0x0;
}
}
static int
hostx_calculate_color_shift(unsigned long mask)
{
int shift = 1;
/* count # of bits in mask */
while ((mask = (mask >> 1)))
shift++;
/* cmap entry is an unsigned char so adjust it by size of that */
shift = shift - sizeof(unsigned char) * 8;
if (shift < 0)
shift = 0;
return shift;
}
void
hostx_set_cmap_entry(unsigned char idx,
unsigned char r, unsigned char g, unsigned char b)
{
/* need to calculate the shifts for RGB because server could be BGR. */
/* XXX Not sure if this is correct for 8 on 16, but this works for 8 on 24.*/
static int rshift, bshift, gshift = 0;
static int first_time = 1;
if (first_time) {
first_time = 0;
rshift = hostx_calculate_color_shift(HostX.visual->red_mask);
gshift = hostx_calculate_color_shift(HostX.visual->green_mask);
bshift = hostx_calculate_color_shift(HostX.visual->blue_mask);
}
HostX.cmap[idx] = ((r << rshift) & HostX.visual->red_mask) |
((g << gshift) & HostX.visual->green_mask) |
((b << bshift) & HostX.visual->blue_mask);
}
/**
* hostx_screen_init creates the XImage that will contain the front buffer of
* the ephyr screen, and possibly offscreen memory.
*
* @param width width of the screen
* @param height height of the screen
* @param buffer_height height of the rectangle to be allocated.
*
* hostx_screen_init() creates an XImage, using MIT-SHM if it's available.
* buffer_height can be used to create a larger offscreen buffer, which is used
* by fakexa for storing offscreen pixmap data.
*/
void *
hostx_screen_init(KdScreenInfo *screen,
int width, int height, int buffer_height,
int *bytes_per_line, int *bits_per_pixel)
{
EphyrScrPriv *scrpriv = screen->driver;
Bool shm_success = FALSE;
if (!scrpriv) {
fprintf(stderr, "%s: Error in accessing hostx data\n", __func__);
exit(1);
}
EPHYR_DBG("host_screen=%p wxh=%dx%d, buffer_height=%d",
host_screen, width, height, buffer_height);
if (scrpriv->ximg != NULL) {
/* Free up the image data if previously used
* i.ie called by server reset
*/
if (HostX.have_shm) {
xcb_shm_detach(HostX.conn, scrpriv->shminfo.shmseg);
xcb_image_destroy(scrpriv->ximg);
shmdt(scrpriv->shminfo.shmaddr);
shmctl(scrpriv->shminfo.shmid, IPC_RMID, 0);
}
else {
free(scrpriv->ximg->data);
scrpriv->ximg->data = NULL;
xcb_image_destroy(scrpriv->ximg);
}
}
if (HostX.have_shm) {
scrpriv->ximg = xcb_image_create_native(HostX.conn,
width,
buffer_height,
XCB_IMAGE_FORMAT_Z_PIXMAP,
HostX.depth,
NULL,
~0,
NULL);
scrpriv->shminfo.shmid =
shmget(IPC_PRIVATE,
scrpriv->ximg->stride * buffer_height,
IPC_CREAT | 0777);
scrpriv->ximg->data = shmat(scrpriv->shminfo.shmid, 0, 0);
scrpriv->shminfo.shmaddr = scrpriv->ximg->data;
if (scrpriv->ximg->data == (uint8_t *) -1) {
EPHYR_DBG
("Can't attach SHM Segment, falling back to plain XImages");
HostX.have_shm = FALSE;
xcb_image_destroy (scrpriv->ximg);
shmctl(scrpriv->shminfo.shmid, IPC_RMID, 0);
}
else {
EPHYR_DBG("SHM segment attached %p", scrpriv->shminfo.shmaddr);
scrpriv->shminfo.shmseg = xcb_generate_id(HostX.conn);
xcb_shm_attach(HostX.conn,
scrpriv->shminfo.shmseg,
scrpriv->shminfo.shmid,
FALSE);
shm_success = TRUE;
}
}
if (!shm_success) {
EPHYR_DBG("Creating image %dx%d for screen scrpriv=%p\n",
width, buffer_height, scrpriv);
scrpriv->ximg = xcb_image_create_native(HostX.conn,
width,
buffer_height,
XCB_IMAGE_FORMAT_Z_PIXMAP,
HostX.depth,
NULL,
~0,
NULL);
scrpriv->ximg->data =
malloc(scrpriv->ximg->stride * buffer_height);
}
*bytes_per_line = scrpriv->ximg->stride;
*bits_per_pixel = scrpriv->ximg->bpp;
if (scrpriv->win_pre_existing == None && !EphyrWantResize) {
/* Ask the WM to keep our size static */
xcb_size_hints_t size_hints = {0};
size_hints.max_width = size_hints.min_width = width;
size_hints.max_height = size_hints.min_height = height;
size_hints.flags = (XCB_ICCCM_SIZE_HINT_P_MIN_SIZE |
XCB_ICCCM_SIZE_HINT_P_MAX_SIZE);
xcb_icccm_set_wm_normal_hints(HostX.conn, scrpriv->win,
&size_hints);
}
xcb_map_window(HostX.conn, scrpriv->win);
xcb_aux_sync(HostX.conn);
scrpriv->win_width = width;
scrpriv->win_height = height;
if (host_depth_matches_server(scrpriv)) {
EPHYR_DBG("Host matches server");
return scrpriv->ximg->data;
}
else {
EPHYR_DBG("server bpp %i", scrpriv->server_depth >> 3);
scrpriv->fb_data =
malloc(width * buffer_height * (scrpriv->server_depth >> 3));
return scrpriv->fb_data;
}
}
static void hostx_paint_debug_rect(KdScreenInfo *screen,
int x, int y, int width, int height);
void
hostx_paint_rect(KdScreenInfo *screen,
int sx, int sy, int dx, int dy, int width, int height)
{
EphyrScrPriv *scrpriv = screen->driver;
EPHYR_DBG("painting in screen %d\n", scrpriv->mynum);
/*
* Copy the image data updated by the shadow layer
* on to the window
*/
if (HostXWantDamageDebug) {
hostx_paint_debug_rect(screen, dx, dy, width, height);
}
/*
* If the depth of the ephyr server is less than that of the host,
* the kdrive fb does not point to the ximage data but to a buffer
* ( fb_data ), we shift the various bits from this onto the XImage
* so they match the host.
*
* Note, This code is pretty new ( and simple ) so may break on
* endian issues, 32 bpp host etc.
* Not sure if 8bpp case is right either.
* ... and it will be slower than the matching depth case.
*/
if (!host_depth_matches_server(scrpriv)) {
int x, y, idx, bytes_per_pixel = (scrpriv->server_depth >> 3);
unsigned char r, g, b;
unsigned long host_pixel;
EPHYR_DBG("Unmatched host depth scrpriv=%p\n", scrpriv);
for (y = sy; y < sy + height; y++)
for (x = sx; x < sx + width; x++) {
idx =
(scrpriv->win_width * y * bytes_per_pixel) +
(x * bytes_per_pixel);
switch (scrpriv->server_depth) {
case 16:
{
unsigned short pixel =
*(unsigned short *) (scrpriv->fb_data + idx);
r = ((pixel & 0xf800) >> 8);
g = ((pixel & 0x07e0) >> 3);
b = ((pixel & 0x001f) << 3);
host_pixel = (r << 16) | (g << 8) | (b);
xcb_image_put_pixel(scrpriv->ximg, x, y, host_pixel);
break;
}
case 8:
{
unsigned char pixel =
*(unsigned char *) (scrpriv->fb_data + idx);
xcb_image_put_pixel(scrpriv->ximg, x, y,
HostX.cmap[pixel]);
break;
}
default:
break;
}
}
}
if (HostX.have_shm) {
xcb_image_shm_put(HostX.conn, scrpriv->win,
HostX.gc, scrpriv->ximg,
scrpriv->shminfo,
sx, sy, dx, dy, width, height, FALSE);
}
else {
xcb_image_put(HostX.conn, scrpriv->win, HostX.gc, scrpriv->ximg,
dx, dy, 0);
}
xcb_aux_sync(HostX.conn);
}
static void
hostx_paint_debug_rect(KdScreenInfo *screen,
int x, int y, int width, int height)
{
EphyrScrPriv *scrpriv = screen->driver;
struct timespec tspec;
xcb_rectangle_t rect = { .x = x, .y = y, .width = width, .height = height };
xcb_void_cookie_t cookie;
xcb_generic_error_t *e;
tspec.tv_sec = HostX.damage_debug_msec / (1000000);
tspec.tv_nsec = (HostX.damage_debug_msec % 1000000) * 1000;
EPHYR_DBG("msec: %li tv_sec %li, tv_msec %li",
HostX.damage_debug_msec, tspec.tv_sec, tspec.tv_nsec);
/* fprintf(stderr, "Xephyr updating: %i+%i %ix%i\n", x, y, width, height); */
cookie = xcb_poly_fill_rectangle_checked(HostX.conn, scrpriv->win,
HostX.gc, 1, &rect);
e = xcb_request_check(HostX.conn, cookie);
free(e);
/* nanosleep seems to work better than usleep for me... */
nanosleep(&tspec, NULL);
}
void
hostx_load_keymap(void)
{
int min_keycode, max_keycode;
min_keycode = xcb_get_setup(HostX.conn)->min_keycode;
max_keycode = xcb_get_setup(HostX.conn)->max_keycode;
EPHYR_DBG("min: %d, max: %d", min_keycode, max_keycode);
ephyrKeySyms.minKeyCode = min_keycode;
ephyrKeySyms.maxKeyCode = max_keycode;
}
static KdScreenInfo *
screen_from_window(Window w)
{
int index = 0;
for (index = 0; index < HostX.n_screens; index++) {
EphyrScrPriv *scrpriv = HostX.screens[index]->driver;
if (scrpriv->win == w
|| scrpriv->peer_win == w
|| scrpriv->win_pre_existing == w) {
return HostX.screens[index];
}
}
return NULL;
}
int
hostx_get_event(EphyrHostXEvent * ev)
{
xcb_generic_event_t *xev;
static int grabbed_screen = -1;
static xcb_key_symbols_t *keysyms;
if (!keysyms)
keysyms = xcb_key_symbols_alloc(HostX.conn);
xev = xcb_poll_for_event(HostX.conn);
if (!xev) {
/* If our XCB connection has died (for example, our window was
* closed), exit now.
*/
if (xcb_connection_has_error(HostX.conn)) {
CloseWellKnownConnections();
OsCleanup(1);
exit(1);
}
return 0;
}
switch (xev->response_type & 0x7f) {
case 0: { /* error */
xcb_generic_error_t *e = (xcb_generic_error_t *)xev;
fprintf(stderr, "X11 error\n"
"Error code: %hhu\n"
"Sequence number: %hu\n"
"Major code: %hhu\tMinor code: %hu\n"
"Error value: %u\n",
e->error_code,
e->sequence,
e->major_code, e->minor_code,
e->resource_id);
free(xev);
exit(1);
}
case XCB_EXPOSE: {
xcb_expose_event_t *expose = (xcb_expose_event_t *)xev;
KdScreenInfo *screen = screen_from_window(expose->window);
EphyrScrPriv *scrpriv = screen->driver;
/* Wait for the last expose event in a series of cliprects
* to actually paint our screen.
*/
if (expose->count != 0)
break;
if (scrpriv) {
hostx_paint_rect(screen, 0, 0, 0, 0,
scrpriv->win_width,
scrpriv->win_height);
}
else {
EPHYR_LOG_ERROR("failed to get host screen\n");
ev->type = EPHYR_EV_EXPOSE;
ev->data.expose.window = expose->window;
free(xev);
return 1;
}
return 0;
}
case XCB_MOTION_NOTIFY: {
xcb_motion_notify_event_t *motion = (xcb_motion_notify_event_t *)xev;
KdScreenInfo *screen = screen_from_window(motion->event);
EphyrScrPriv *scrpriv = screen->driver;
ev->type = EPHYR_EV_MOUSE_MOTION;
ev->data.mouse_motion.x = motion->event_x;
ev->data.mouse_motion.y = motion->event_y;
ev->data.mouse_motion.window = motion->event;
ev->data.mouse_motion.screen = scrpriv ? scrpriv->mynum : -1;
free(xev);
return 1;
}
case XCB_BUTTON_PRESS: {
xcb_button_press_event_t *button = (xcb_button_press_event_t *)xev;
ev->type = EPHYR_EV_MOUSE_PRESS;
ev->key_state = button->state;
/*
* This is a bit hacky. will break for button 5 ( defined as 0x10 )
* Check KD_BUTTON defines in kdrive.h
*/
ev->data.mouse_down.button_num = 1 << (button->detail - 1);
free(xev);
return 1;
}
case XCB_BUTTON_RELEASE: {
xcb_button_release_event_t *button = (xcb_button_release_event_t *)xev;
ev->type = EPHYR_EV_MOUSE_RELEASE;
ev->key_state = button->state;
ev->data.mouse_up.button_num = 1 << (button->detail-1);
free(xev);
return 1;
}
case XCB_KEY_PRESS: {
xcb_key_press_event_t *key = (xcb_key_press_event_t *)xev;
ev->type = EPHYR_EV_KEY_PRESS;
ev->key_state = key->state;
ev->data.key_down.scancode = key->detail;
free(xev);
return 1;
}
case XCB_KEY_RELEASE: {
xcb_key_release_event_t *key = (xcb_key_release_event_t *)xev;
if ((xcb_key_symbols_get_keysym(keysyms, key->detail, 0) == XK_Shift_L
|| xcb_key_symbols_get_keysym(keysyms, key->detail, 0) == XK_Shift_R)
&& (key->state & XCB_MOD_MASK_CONTROL)) {
KdScreenInfo *screen = screen_from_window(key->event);
EphyrScrPriv *scrpriv = screen->driver;
if (grabbed_screen != -1) {
xcb_ungrab_keyboard(HostX.conn, XCB_TIME_CURRENT_TIME);
xcb_ungrab_pointer(HostX.conn, XCB_TIME_CURRENT_TIME);
grabbed_screen = -1;
hostx_set_win_title(screen,
"(ctrl+shift grabs mouse and keyboard)");
}
else {
/* Attempt grab */
xcb_grab_keyboard_cookie_t kbgrabc =
xcb_grab_keyboard(HostX.conn,
TRUE,
scrpriv->win,
XCB_TIME_CURRENT_TIME,
XCB_GRAB_MODE_ASYNC,
XCB_GRAB_MODE_ASYNC);
xcb_grab_keyboard_reply_t *kbgrabr;
xcb_grab_pointer_cookie_t pgrabc =
xcb_grab_pointer(HostX.conn,
TRUE,
scrpriv->win,
0,
XCB_GRAB_MODE_ASYNC,
XCB_GRAB_MODE_ASYNC,
scrpriv->win,
XCB_NONE,
XCB_TIME_CURRENT_TIME);
xcb_grab_pointer_reply_t *pgrabr;
kbgrabr = xcb_grab_keyboard_reply(HostX.conn, kbgrabc, NULL);
if (!kbgrabr || kbgrabr->status != XCB_GRAB_STATUS_SUCCESS) {
xcb_discard_reply(HostX.conn, pgrabc.sequence);
xcb_ungrab_pointer(HostX.conn, XCB_TIME_CURRENT_TIME);
} else {
pgrabr = xcb_grab_pointer_reply(HostX.conn, pgrabc, NULL);
if (!pgrabr || pgrabr->status != XCB_GRAB_STATUS_SUCCESS)
{
xcb_ungrab_keyboard(HostX.conn,
XCB_TIME_CURRENT_TIME);
} else {
grabbed_screen = scrpriv->mynum;
hostx_set_win_title
(screen,
"(ctrl+shift releases mouse and keyboard)");
}
}
}
}
/* Still send the release event even if above has happened
* server will get confused with just an up event.
* Maybe it would be better to just block shift+ctrls getting to
* kdrive all togeather.
*/
ev->type = EPHYR_EV_KEY_RELEASE;
ev->key_state = key->state;
ev->data.key_up.scancode = key->detail;
return 1;
}
case ConfigureNotify:
{
xcb_configure_notify_event_t *configure =
(xcb_configure_notify_event_t *)xev;
KdScreenInfo *screen = screen_from_window(configure->window);
EphyrScrPriv *scrpriv = screen->driver;
if (!scrpriv ||
(scrpriv->win_pre_existing == None && !EphyrWantResize)) {
free(xev);
return 0;
}
ev->type = EPHYR_EV_CONFIGURE;
ev->data.configure.width = configure->width;
ev->data.configure.height = configure->height;
ev->data.configure.window = configure->window;
ev->data.configure.screen = scrpriv->mynum;
free(xev);
return 1;
}
default:
break;
}
free(xev);
return 0;
}
xcb_connection_t *
hostx_get_xcbconn(void)
{
return HostX.conn;
}
int
hostx_get_screen(void)
{
return HostX.screen;
}
int
hostx_get_window(int a_screen_number)
{
EphyrScrPriv *scrpriv;
if (a_screen_number < 0 || a_screen_number >= HostX.n_screens) {
EPHYR_LOG_ERROR("bad screen number:%d\n", a_screen_number);
return 0;
}
scrpriv = HostX.screens[a_screen_number]->driver;
return scrpriv->win;
}
int
hostx_get_window_attributes(int a_window, EphyrHostWindowAttributes * a_attrs)
{
xcb_get_geometry_cookie_t geom_cookie;
xcb_get_window_attributes_cookie_t attr_cookie;
xcb_get_geometry_reply_t *geom_reply;
xcb_get_window_attributes_reply_t *attr_reply;
geom_cookie = xcb_get_geometry(HostX.conn, a_window);
attr_cookie = xcb_get_window_attributes(HostX.conn, a_window);
geom_reply = xcb_get_geometry_reply(HostX.conn, geom_cookie, NULL);
attr_reply = xcb_get_window_attributes_reply(HostX.conn, attr_cookie, NULL);
a_attrs->x = geom_reply->x;
a_attrs->y = geom_reply->y;
a_attrs->width = geom_reply->width;
a_attrs->height = geom_reply->height;
a_attrs->visualid = attr_reply->visual;
free(geom_reply);
free(attr_reply);
return TRUE;
}
int
hostx_get_visuals_info(EphyrHostVisualInfo ** a_visuals, int *a_num_entries)
{
Bool is_ok = FALSE;
EphyrHostVisualInfo *host_visuals = NULL;
int nb_items = 0, i = 0, screen_num;
xcb_screen_iterator_t screens;
xcb_depth_iterator_t depths;
EPHYR_RETURN_VAL_IF_FAIL(a_visuals && a_num_entries, FALSE);
EPHYR_LOG("enter\n");
screens = xcb_setup_roots_iterator(xcb_get_setup(HostX.conn));
for (screen_num = 0; screens.rem; screen_num++, xcb_screen_next(&screens)) {
depths = xcb_screen_allowed_depths_iterator(screens.data);
for (; depths.rem; xcb_depth_next(&depths)) {
xcb_visualtype_t *visuals = xcb_depth_visuals(depths.data);
EphyrHostVisualInfo *tmp_visuals =
realloc(host_visuals,
(nb_items + depths.data->visuals_len)
* sizeof(EphyrHostVisualInfo));
if (!tmp_visuals) {
goto out;
}
host_visuals = tmp_visuals;
for (i = 0; i < depths.data->visuals_len; i++) {
host_visuals[nb_items + i].visualid = visuals[i].visual_id;
host_visuals[nb_items + i].screen = screen_num;
host_visuals[nb_items + i].depth = depths.data->depth;
host_visuals[nb_items + i].class = visuals[i]._class;
host_visuals[nb_items + i].red_mask = visuals[i].red_mask;
host_visuals[nb_items + i].green_mask = visuals[i].green_mask;
host_visuals[nb_items + i].blue_mask = visuals[i].blue_mask;
host_visuals[nb_items + i].colormap_size = visuals[i].colormap_entries;
host_visuals[nb_items + i].bits_per_rgb = visuals[i].bits_per_rgb_value;
}
nb_items += depths.data->visuals_len;
}
}
EPHYR_LOG("host advertises %d visuals\n", nb_items);
*a_visuals = host_visuals;
*a_num_entries = nb_items;
host_visuals = NULL;
is_ok = TRUE;
out:
free(host_visuals);
host_visuals = NULL;
EPHYR_LOG("leave\n");
return is_ok;
}
int
hostx_create_window(int a_screen_number,
EphyrBox * a_geometry,
int a_visual_id, int *a_host_peer /*out parameter */ )
{
Bool is_ok = FALSE;
xcb_window_t win;
int winmask = 0;
uint32_t attrs[2];
xcb_screen_t *screen = xcb_aux_get_screen(HostX.conn, hostx_get_screen());
xcb_visualtype_t *visual;
int depth = 0;
EphyrScrPriv *scrpriv = HostX.screens[a_screen_number]->driver;
EPHYR_RETURN_VAL_IF_FAIL(screen && a_geometry, FALSE);
EPHYR_LOG("enter\n");
visual = xcb_aux_find_visual_by_id(screen, a_visual_id);
if (!visual) {
EPHYR_LOG_ERROR ("argh, could not find a remote visual with id:%d\n",
a_visual_id);
goto out;
}
depth = xcb_aux_get_depth_of_visual(screen, a_visual_id);
winmask = XCB_CW_EVENT_MASK | XCB_CW_COLORMAP;
attrs[0] = XCB_EVENT_MASK_BUTTON_PRESS
|XCB_EVENT_MASK_BUTTON_RELEASE
|XCB_EVENT_MASK_POINTER_MOTION
|XCB_EVENT_MASK_KEY_PRESS
|XCB_EVENT_MASK_KEY_RELEASE
|XCB_EVENT_MASK_EXPOSURE;
attrs[1] = xcb_generate_id(HostX.conn);
xcb_create_colormap(HostX.conn,
XCB_COLORMAP_ALLOC_NONE,
attrs[1],
hostx_get_window(a_screen_number),
a_visual_id);
win = xcb_generate_id(HostX.conn);
xcb_create_window(HostX.conn,
depth,
win,
hostx_get_window (a_screen_number),
a_geometry->x, a_geometry->y,
a_geometry->width, a_geometry->height, 0,
XCB_WINDOW_CLASS_COPY_FROM_PARENT,
a_visual_id, winmask, attrs);
if (scrpriv->peer_win == XCB_NONE) {
scrpriv->peer_win = win;
}
else {
EPHYR_LOG_ERROR("multiple peer windows created for same screen\n");
}
xcb_flush(HostX.conn);
xcb_map_window(HostX.conn, win);
*a_host_peer = win;
is_ok = TRUE;
out:
EPHYR_LOG("leave\n");
return is_ok;
}
int
hostx_destroy_window(int a_win)
{
xcb_destroy_window(HostX.conn, a_win);
xcb_flush(HostX.conn);
return TRUE;
}
int
hostx_set_window_geometry(int a_win, EphyrBox * a_geo)
{
uint32_t mask = XCB_CONFIG_WINDOW_X
| XCB_CONFIG_WINDOW_Y
| XCB_CONFIG_WINDOW_WIDTH
| XCB_CONFIG_WINDOW_HEIGHT;
uint32_t values[4];
EPHYR_RETURN_VAL_IF_FAIL(a_geo, FALSE);
EPHYR_LOG("enter. x,y,w,h:(%d,%d,%d,%d)\n",
a_geo->x, a_geo->y, a_geo->width, a_geo->height);
values[0] = a_geo->x;
values[1] = a_geo->y;
values[2] = a_geo->width;
values[3] = a_geo->height;
xcb_configure_window(HostX.conn, a_win, mask, values);
EPHYR_LOG("leave\n");
return TRUE;
}
int
hostx_set_window_bounding_rectangles(int a_window,
EphyrRect * a_rects, int a_num_rects)
{
Bool is_ok = FALSE;
int i = 0;
xcb_rectangle_t *rects = NULL;
EPHYR_RETURN_VAL_IF_FAIL(a_rects, FALSE);
EPHYR_LOG("enter. num rects:%d\n", a_num_rects);
rects = calloc(a_num_rects, sizeof (xcb_rectangle_t));
if (!rects)
goto out;
for (i = 0; i < a_num_rects; i++) {
rects[i].x = a_rects[i].x1;
rects[i].y = a_rects[i].y1;
rects[i].width = abs(a_rects[i].x2 - a_rects[i].x1);
rects[i].height = abs(a_rects[i].y2 - a_rects[i].y1);
EPHYR_LOG("borders clipped to rect[x:%d,y:%d,w:%d,h:%d]\n",
rects[i].x, rects[i].y, rects[i].width, rects[i].height);
}
xcb_shape_rectangles(HostX.conn,
XCB_SHAPE_SO_SET,
XCB_SHAPE_SK_BOUNDING,
XCB_CLIP_ORDERING_YX_BANDED,
a_window,
0, 0,
a_num_rects,
rects);
is_ok = TRUE;
out:
free(rects);
rects = NULL;
EPHYR_LOG("leave\n");
return is_ok;
}
int
hostx_set_window_clipping_rectangles(int a_window,
EphyrRect * a_rects, int a_num_rects)
{
Bool is_ok = FALSE;
int i = 0;
xcb_rectangle_t *rects = NULL;
EPHYR_RETURN_VAL_IF_FAIL(a_rects, FALSE);
EPHYR_LOG("enter. num rects:%d\n", a_num_rects);
rects = calloc(a_num_rects, sizeof (xcb_rectangle_t));
if (!rects)
goto out;
for (i = 0; i < a_num_rects; i++) {
rects[i].x = a_rects[i].x1;
rects[i].y = a_rects[i].y1;
rects[i].width = abs(a_rects[i].x2 - a_rects[i].x1);
rects[i].height = abs(a_rects[i].y2 - a_rects[i].y1);
EPHYR_LOG("clipped to rect[x:%d,y:%d,w:%d,h:%d]\n",
rects[i].x, rects[i].y, rects[i].width, rects[i].height);
}
xcb_shape_rectangles(HostX.conn,
XCB_SHAPE_SO_SET,
XCB_SHAPE_SK_CLIP,
XCB_CLIP_ORDERING_YX_BANDED,
a_window,
0, 0,
a_num_rects,
rects);
is_ok = TRUE;
out:
free(rects);
rects = NULL;
EPHYR_LOG("leave\n");
return is_ok;
}
#ifdef XF86DRI
typedef struct {
int is_valid;
int local_id;
int remote_id;
} ResourcePair;
#define RESOURCE_PEERS_SIZE 1024*10
static ResourcePair resource_peers[RESOURCE_PEERS_SIZE];
int
hostx_allocate_resource_id_peer(int a_local_resource_id,
int *a_remote_resource_id)
{
int i = 0;
ResourcePair *peer = NULL;
/*
* first make sure a resource peer
* does not exist already for
* a_local_resource_id
*/
for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
if (resource_peers[i].is_valid
&& resource_peers[i].local_id == a_local_resource_id) {
peer = &resource_peers[i];
break;
}
}
/*
* find one free peer entry, an feed it with
*/
if (!peer) {
for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
if (!resource_peers[i].is_valid) {
peer = &resource_peers[i];
break;
}
}
if (peer) {
peer->remote_id = xcb_generate_id(HostX.conn);
peer->local_id = a_local_resource_id;
peer->is_valid = TRUE;
}
}
if (peer) {
*a_remote_resource_id = peer->remote_id;
return TRUE;
}
return FALSE;
}
int
hostx_get_resource_id_peer(int a_local_resource_id, int *a_remote_resource_id)
{
int i = 0;
ResourcePair *peer = NULL;
for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
if (resource_peers[i].is_valid
&& resource_peers[i].local_id == a_local_resource_id) {
peer = &resource_peers[i];
break;
}
}
if (peer) {
*a_remote_resource_id = peer->remote_id;
return TRUE;
}
return FALSE;
}
#endif /* XF86DRI */
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