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xserver/hw/kdrive/ephyr/hostx.c

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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 "input.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h> /* for memset */
#include <errno.h>
#include <time.h>
#include <err.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 */
#ifdef GLAMOR
#include <epoxy/gl.h>
#include "glamor.h"
#include "ephyr_glamor_glx.h"
#endif
#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_sw_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 Bool EphyrWantResize;
char *ephyrResName = NULL;
int ephyrResNameFromCmd = 0;
char *ephyrTitle = NULL;
Bool ephyr_glamor = FALSE;
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);
xcb_flush(HostX.conn);
}
}
int
hostx_want_host_cursor(void)
{
return !HostX.use_sw_cursor;
}
void
hostx_use_sw_cursor(void)
{
HostX.use_sw_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 attrs[2];
uint32_t attr_mask = 0;
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;
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
| XCB_EVENT_MASK_STRUCTURE_NOTIFY;
attr_mask |= XCB_CW_EVENT_MASK;
EPHYR_DBG("mark");
#ifdef GLAMOR
if (ephyr_glamor)
HostX.conn = ephyr_glamor_connect();
else
#endif
HostX.conn = xcb_connect(NULL, &HostX.screen);
if (xcb_connection_has_error(HostX.conn)) {
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;
#ifdef GLAMOR
if (ephyr_glamor) {
HostX.visual = ephyr_glamor_get_visual();
if (HostX.visual->visual_id != xscreen->root_visual) {
attrs[1] = xcb_generate_id(HostX.conn);
attr_mask |= XCB_CW_COLORMAP;
xcb_create_colormap(HostX.conn,
XCB_COLORMAP_ALLOC_NONE,
attrs[1],
HostX.winroot,
HostX.visual->visual_id);
}
} else
#endif
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,
HostX.visual->visual_id,
attr_mask,
attrs);
}
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,
HostX.visual->visual_id,
attr_mask,
attrs);
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 ()) {
CursorVisible = TRUE;
/* 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 (!ephyr_glamor && 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 (!ephyr_glamor && !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);
}
{
uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
uint32_t values[2] = {width, height};
xcb_configure_window(HostX.conn, scrpriv->win, mask, values);
}
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;
#ifdef GLAMOR
if (ephyr_glamor) {
*bytes_per_line = 0;
*bits_per_pixel = 0;
ephyr_glamor_set_window_size(scrpriv->glamor,
scrpriv->win_width, scrpriv->win_height);
return NULL;
} else
#endif
if (host_depth_matches_server(scrpriv)) {
*bytes_per_line = scrpriv->ximg->stride;
*bits_per_pixel = scrpriv->ximg->bpp;
EPHYR_DBG("Host matches server");
return scrpriv->ximg->data;
}
else {
int bytes_per_pixel = scrpriv->server_depth >> 3;
int stride = (width * bytes_per_pixel + 0x3) & ~0x3;
*bytes_per_line = stride;
*bits_per_pixel = scrpriv->server_depth;
EPHYR_DBG("server bpp %i", bytes_per_pixel);
scrpriv->fb_data = malloc (stride * buffer_height);
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);
#ifdef GLAMOR
if (ephyr_glamor) {
BoxRec box;
RegionRec region;
box.x1 = dx;
box.y1 = dy;
box.x2 = dx + width;
box.y2 = dy + height;
RegionInit(&region, &box, 1);
ephyr_glamor_damage_redisplay(scrpriv->glamor, &region);
RegionUninit(&region);
return;
}
#endif
/*
* 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);
int stride = (scrpriv->win_width * bytes_per_pixel + 0x3) & ~0x3;
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 = y * stride + 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;
}
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;
}
#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 */
#ifdef GLAMOR
Bool
ephyr_glamor_init(ScreenPtr screen)
{
KdScreenPriv(screen);
KdScreenInfo *kd_screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = kd_screen->driver;
scrpriv->glamor = ephyr_glamor_glx_screen_init(scrpriv->win);
ephyr_glamor_set_window_size(scrpriv->glamor,
scrpriv->win_width, scrpriv->win_height);
glamor_init(screen,
GLAMOR_USE_SCREEN |
GLAMOR_USE_PICTURE_SCREEN |
GLAMOR_INVERTED_Y_AXIS);
return TRUE;
}
Bool
ephyr_glamor_create_screen_resources(ScreenPtr pScreen)
{
KdScreenPriv(pScreen);
KdScreenInfo *kd_screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = kd_screen->driver;
PixmapPtr screen_pixmap;
uint32_t tex;
if (!ephyr_glamor)
return TRUE;
/* kdrive's fbSetupScreen() told mi to have
* miCreateScreenResources() (which is called before this) make a
* scratch pixmap wrapping ephyr-glamor's NULL
* KdScreenInfo->fb.framebuffer.
*
* We want a real (texture-based) screen pixmap at this point.
* This is what glamor will render into, and we'll then texture
* out of that into the host's window to present the results.
*
* Thus, delete the current screen pixmap, and put a fresh one in.
*/
screen_pixmap = pScreen->GetScreenPixmap(pScreen);
pScreen->DestroyPixmap(screen_pixmap);
screen_pixmap = pScreen->CreatePixmap(pScreen,
pScreen->width,
pScreen->height,
pScreen->rootDepth,
GLAMOR_CREATE_NO_LARGE);
pScreen->SetScreenPixmap(screen_pixmap);
/* Tell the GLX code what to GL texture to read from. */
tex = glamor_get_pixmap_texture(screen_pixmap);
ephyr_glamor_set_texture(scrpriv->glamor, tex);
return TRUE;
}
void
ephyr_glamor_enable(ScreenPtr screen)
{
}
void
ephyr_glamor_disable(ScreenPtr screen)
{
}
void
ephyr_glamor_fini(ScreenPtr screen)
{
KdScreenPriv(screen);
KdScreenInfo *kd_screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = kd_screen->driver;
glamor_fini(screen);
ephyr_glamor_glx_screen_fini(scrpriv->glamor);
scrpriv->glamor = NULL;
}
#endif
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