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tdelibs/krandr/lowlevel_randr.c

676 lines
17 KiB

/*
* Copyright © 2010 Raptor Engineering
* Copyright © 2007 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "lowlevel_randr.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
Status internal_crtc_disable (struct CrtcInfo *crtc);
char * internal_get_output_name (struct ScreenInfo *screen_info, RROutput id)
{
char *output_name = NULL;
int i;
for (i = 0; i < screen_info->n_output; i++) {
if (id == screen_info->outputs[i]->id) {
output_name = screen_info->outputs[i]->info->name;
}
}
if (!output_name) {
output_name = "Unknown";
}
return output_name;
}
XRRModeInfo * internal_find_mode_by_xid (struct ScreenInfo *screen_info, RRMode mode_id)
{
XRRModeInfo *mode_info = NULL;
XRRScreenResources *res;
int i;
res = screen_info->res;
for (i = 0; i < res->nmode; i++) {
if (mode_id == res->modes[i].id) {
mode_info = &res->modes[i];
break;
}
}
return mode_info;
}
static XRRCrtcInfo * internal_find_crtc_by_xid (struct ScreenInfo *screen_info, RRCrtc crtc_id)
{
XRRCrtcInfo *crtc_info;
Display *dpy;
XRRScreenResources *res;
dpy = screen_info->dpy;
res = screen_info->res;
crtc_info = XRRGetCrtcInfo (dpy, res, crtc_id);
return crtc_info;
}
int internal_get_width_by_output_id (struct ScreenInfo *screen_info, RROutput output_id)
{
struct OutputInfo *output_info;
struct CrtcInfo *crtc_info;
RRMode mode_id;
XRRModeInfo *mode_info;
int i;
int width = -1;
for (i = 0; i < screen_info->n_output; i++) {
if (output_id == screen_info->outputs[i]->id) {
crtc_info = screen_info->outputs[i]->cur_crtc;
if (!crtc_info) {
width = 0;
break;
}
mode_id = crtc_info->cur_mode_id;
mode_info = internal_find_mode_by_xid (screen_info, mode_id);
width = internal_mode_width (mode_info, crtc_info->cur_rotation);
break;
}
}
return width;
}
int internal_get_height_by_output_id (struct ScreenInfo *screen_info, RROutput output_id)
{
struct OutputInfo *output_info;
struct CrtcInfo *crtc_info;
RRMode mode_id;
XRRModeInfo *mode_info;
int i;
int height = -1;
for (i = 0; i < screen_info->n_output; i++) {
if (output_id == screen_info->outputs[i]->id) {
crtc_info = screen_info->outputs[i]->cur_crtc;
if (!crtc_info) {
height = 0;
break;
}
mode_id = crtc_info->cur_mode_id;
mode_info = internal_find_mode_by_xid (screen_info, mode_id);
height = internal_mode_height (mode_info, crtc_info->cur_rotation);
break;
}
}
return height;
}
int internal_mode_height (XRRModeInfo *mode_info, Rotation rotation)
{
switch (rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_180:
return mode_info->height;
case RR_Rotate_90:
case RR_Rotate_270:
return mode_info->width;
default:
return 0;
}
}
int internal_mode_width (XRRModeInfo *mode_info, Rotation rotation)
{
switch (rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_180:
return mode_info->width;
case RR_Rotate_90:
case RR_Rotate_270:
return mode_info->height;
default:
return 0;
}
}
static struct CrtcInfo * internal_find_crtc (struct ScreenInfo *screen_info, XRROutputInfo *output)
{
struct CrtcInfo *crtc_info = NULL;
int i;
for (i = 0; i < screen_info->n_crtc; i++) {
if (screen_info->crtcs[i]->id == output->crtc) {
crtc_info = screen_info->crtcs[i];
break;
}
}
return crtc_info;
}
struct CrtcInfo * internal_auto_find_crtc (struct ScreenInfo *screen_info, struct OutputInfo *output_info)
{
struct CrtcInfo *crtc_info = NULL;
int i;
for (i = 0; i < screen_info->n_crtc; i++) {
if (0 == screen_info->crtcs[i]->cur_noutput) {
crtc_info = screen_info->crtcs[i];
break;
}
}
if (NULL == crtc_info) {
crtc_info = screen_info->crtcs[0];
}
return crtc_info;
}
int internal_set_screen_size (struct ScreenInfo *screen_info)
{
Display *dpy;
int screen;
struct CrtcInfo *crtc;
XRRModeInfo *mode_info;
int cur_x = 0, cur_y = 0;
int w = 0, h = 0;
int mmW, mmH;
int max_width = 0, max_height = 0;
int i;
dpy = screen_info->dpy;
screen = DefaultScreen (dpy);
for (i = 0; i < screen_info->n_crtc; i++) {
crtc = screen_info->crtcs[i];
if (!crtc->cur_mode_id) {
continue;
}
mode_info = internal_find_mode_by_xid (screen_info, crtc->cur_mode_id);
cur_x = crtc->cur_x;
cur_y = crtc->cur_y;
w = internal_mode_width (mode_info, crtc->cur_rotation);
h = internal_mode_height (mode_info, crtc->cur_rotation);
if (cur_x + w > max_width) {
max_width = cur_x + w;
}
if (cur_y + h > max_height) {
max_height = cur_y + h;
}
}
if (max_width > screen_info->max_width) {
#if RANDR_GUI_DEBUG
fprintf (stderr, "user set screen width %d, larger than max width %d, set to max width\n",
cur_x + w, screen_info->max_width);
#endif
return 0;
} else if (max_width < screen_info->min_width) {
screen_info->cur_width = screen_info->min_width;
} else {
screen_info->cur_width = max_width;
}
if (max_height > screen_info->max_height) {
#if RANDR_GUI_DEBUG
fprintf (stderr, "user set screen height %d, larger than max height %d, set to max height\n",
cur_y + h, screen_info->max_height);
#endif
return 0;
} else if (max_height < screen_info->min_height) {
screen_info->cur_height = screen_info->min_height;
} else {
screen_info->cur_height = max_height;
}
/* calculate mmWidth, mmHeight */
if (screen_info->cur_width != DisplayWidth (dpy, screen) ||
screen_info->cur_height != DisplayHeight (dpy, screen) ) {
double dpi;
dpi = (25.4 * DisplayHeight (dpy, screen)) / DisplayHeightMM(dpy, screen);
mmW = (25.4 * screen_info->cur_width) / dpi;
mmH = (25.4 * screen_info->cur_height) / dpi;
} else {
mmW = DisplayWidthMM (dpy, screen);
mmH = DisplayHeightMM (dpy, screen);
}
screen_info->cur_mmWidth = mmW;
screen_info->cur_mmHeight = mmH;
return 1;
}
void internal_screen_apply (struct ScreenInfo *screen_info)
{
int width, height;
int mmWidth, mmHeight;
Display *dpy, *cur_dpy;
Window window;
int screen;
static int first = 1;
width = screen_info->cur_width;
height = screen_info->cur_height;
mmWidth = screen_info->cur_mmWidth;
mmHeight = screen_info->cur_mmHeight;
dpy = screen_info->dpy;
window = screen_info->window;
screen = DefaultScreen (dpy);
cur_dpy = XOpenDisplay (NULL);
if (width == DisplayWidth (cur_dpy, screen) &&
height == DisplayHeight (cur_dpy, screen) &&
mmWidth == DisplayWidthMM (cur_dpy, screen) &&
mmHeight == DisplayHeightMM (cur_dpy, screen) ) {
return;
} else {
XRRSetScreenSize (dpy, window, width, height, mmWidth, mmHeight);
}
}
Status internal_crtc_apply (struct CrtcInfo *crtc_info)
{
struct ScreenInfo *screen_info;
XRRCrtcInfo *rr_crtc_info;
Display *dpy;
XRRScreenResources *res;
RRCrtc crtc_id;
int x, y;
RRMode mode_id;
Rotation rotation;
RROutput *outputs;
int noutput;
Status s;
int i;
/*if (!crtc_info->changed) {
return RRSetConfigSuccess;
}*/
screen_info = crtc_info->screen_info;
dpy = screen_info->dpy;
res = screen_info->res;
crtc_id = crtc_info->id;
x = crtc_info->cur_x;
y = crtc_info->cur_y;
mode_id = crtc_info->cur_mode_id;
rotation = crtc_info->cur_rotation;
noutput = crtc_info->cur_noutput;
if (0 == noutput) {
return internal_crtc_disable (crtc_info);
}
outputs = malloc (sizeof (RROutput) * noutput);
noutput = 0;
for (i = 0; i < screen_info->n_output; i++) {
struct OutputInfo *output_info = screen_info->outputs[i];
if (output_info->cur_crtc && crtc_id == output_info->cur_crtc->id) {
outputs[noutput++] = output_info->id;
}
}
s = XRRSetCrtcConfig (dpy, res, crtc_id, CurrentTime,
x, y, mode_id, rotation,
outputs, noutput);
if (RRSetConfigSuccess == s) {
crtc_info->changed = 0;
}
free (outputs);
return s;
}
Status internal_crtc_disable (struct CrtcInfo *crtc)
{
struct ScreenInfo *screen_info;
screen_info = crtc->screen_info;
return XRRSetCrtcConfig (screen_info->dpy, screen_info->res, crtc->id, CurrentTime,
0, 0, None, RR_Rotate_0, NULL, 0);
}
struct ScreenInfo* internal_read_screen_info (Display *display)
{
struct ScreenInfo *screen_info;
int screen_num;
Window root_window;
XRRScreenResources *sr;
int i;
screen_num = DefaultScreen (display);
root_window = RootWindow (display, screen_num);
sr = XRRGetScreenResources (display, root_window);
if (sr == NULL) {
return NULL;
}
screen_info = malloc (sizeof (struct ScreenInfo));
screen_info->dpy = display;
screen_info->window = root_window;
screen_info->res = sr;
screen_info->cur_width = DisplayWidth (display, screen_num);
screen_info->cur_height = DisplayHeight (display, screen_num);
screen_info->cur_mmWidth = DisplayWidthMM (display, screen_num);
screen_info->cur_mmHeight = DisplayHeightMM (display, screen_num);
screen_info->n_output = sr->noutput;
screen_info->n_crtc = sr->ncrtc;
screen_info->outputs = malloc (sizeof (struct OutputInfo *) * sr->noutput);
screen_info->crtcs = malloc (sizeof (struct CrtcInfo *) * sr->ncrtc);
screen_info->clone = 0;
XRRGetScreenSizeRange (display, root_window, &screen_info->min_width, &screen_info->min_height, &screen_info->max_width, &screen_info->max_height);
/* get crtc */
for (i = 0; i < sr->ncrtc; i++) {
struct CrtcInfo *crtc_info;
screen_info->crtcs[i] = malloc (sizeof (struct CrtcInfo));
crtc_info = screen_info->crtcs[i];
XRRCrtcInfo *xrr_crtc_info = XRRGetCrtcInfo (display, sr, sr->crtcs[i]);
crtc_info->id = sr->crtcs[i];
crtc_info->info = xrr_crtc_info;
crtc_info->cur_x = xrr_crtc_info->x;
crtc_info->cur_y = xrr_crtc_info->y;
crtc_info->cur_mode_id = xrr_crtc_info->mode;
crtc_info->cur_rotation = xrr_crtc_info->rotation;
crtc_info->rotations = xrr_crtc_info->rotations;
crtc_info->cur_noutput = xrr_crtc_info->noutput;
crtc_info->changed = 0;
crtc_info->screen_info = screen_info;
}
/* get output */
for (i = 0; i < sr->noutput; i++) {
struct OutputInfo *output;
screen_info->outputs[i] = malloc (sizeof (struct OutputInfo));
output = screen_info->outputs[i];
output->id = sr->outputs[i];
output->info = XRRGetOutputInfo (display, sr, sr->outputs[i]);
output->cur_crtc = internal_find_crtc (screen_info, output->info);
output->auto_set = 0;
if (output->cur_crtc) {
output->off_set = 0;
} else {
output->off_set = 1;
}
}
/* set current crtc */
screen_info->cur_crtc = screen_info->outputs[0]->cur_crtc;
screen_info->primary_crtc = screen_info->cur_crtc;
screen_info->cur_output = screen_info->outputs[0];
return screen_info;
}
void internal_free_screen_info (struct ScreenInfo *screen_info)
{
free (screen_info->outputs);
free (screen_info->crtcs);
free (screen_info);
}
/*check if other outputs that connected to the same crtc support this mode*/
static int internal_check_mode (struct ScreenInfo *screen_info, struct OutputInfo *output, RRMode mode_id)
{
XRRCrtcInfo *crtc_info;
/* XRR */
int i, j;
int mode_ok = 1;
if (!output->cur_crtc) {
return 1;
}
crtc_info = output->cur_crtc->info;
for (i = 0; i < crtc_info->noutput; i++) {
XRROutputInfo *output_info;
int nmode;
if (output->id == crtc_info->outputs[i]) {
continue;
}
mode_ok = 0;
output_info = XRRGetOutputInfo (screen_info->dpy, screen_info->res, crtc_info->outputs[i]);
nmode = output_info->nmode;
for (j = 0; j < nmode; j++) {
if (mode_id == output_info->modes[j]) {
mode_ok = 1;
break;
}
}
if (!mode_ok) {
break;
}
}
return mode_ok;
}
static RRCrtc internal_get_crtc_id_by_output_id (struct ScreenInfo *screen_info, RROutput output_id)
{
int i;
RRCrtc crtc_id = -1;
for (i = 0; i < screen_info->n_output; i++) {
if (output_id == screen_info->outputs[i]->id) {
if (screen_info->outputs[i]->cur_crtc) {
crtc_id = screen_info->outputs[i]->cur_crtc->id;
} else {
crtc_id = 0; /* this output is off */
}
break;
}
}
return crtc_id;
}
static struct CrtcInfo *
internal_get_crtc_info_by_xid (struct ScreenInfo *screen_info, RRCrtc crtc_id)
{
struct CrtcInfo *crtc_info = NULL;
int i;
for (i = 0; i < screen_info->n_crtc; i++) {
if (crtc_id == screen_info->crtcs[i]->id) {
crtc_info = screen_info->crtcs[i];
break;
}
}
return crtc_info;
}
static XRRModeInfo *
internal_preferred_mode (struct ScreenInfo *screen_info, struct OutputInfo *output)
{
XRROutputInfo *output_info = output->info;
Display *dpy;
int screen;
int m;
XRRModeInfo *best;
int bestDist;
dpy = screen_info->dpy;
screen = DefaultScreen (dpy);
best = NULL;
bestDist = 0;
for (m = 0; m < output_info->nmode; m++) {
XRRModeInfo *mode_info = internal_find_mode_by_xid (screen_info, output_info->modes[m]);
int dist;
if (m < output_info->npreferred)
dist = 0;
else if (output_info->mm_height)
dist = (1000 * DisplayHeight(dpy, screen) / DisplayHeightMM(dpy, screen) -
1000 * mode_info->height / output_info->mm_height);
else
dist = DisplayHeight(dpy, screen) - mode_info->height;
if (dist < 0) dist = -dist;
if (!best || dist < bestDist) {
best = mode_info;
bestDist = dist;
}
}
return best;
}
int internal_main_low_apply (struct ScreenInfo *screen_info)
{
int i;
struct CrtcInfo *crtc_info;
/* set_positions (screen_info); */
if (!internal_set_screen_size (screen_info)) {
printf("Screen Size FAILURE\n");
return 0;
}
for (i = 0; i < screen_info->n_crtc; i++) {
int old_x, old_y, old_w, old_h;
XRRCrtcInfo *crtc_info = XRRGetCrtcInfo (screen_info->dpy, screen_info->res, screen_info->crtcs[i]->id);
XRRModeInfo *old_mode = internal_find_mode_by_xid (screen_info, crtc_info->mode);
if (crtc_info->mode == None) {
continue;
}
old_x = crtc_info->x;
old_y = crtc_info->y;
old_w = internal_mode_width (old_mode, crtc_info->rotation);
old_h = internal_mode_height (old_mode, crtc_info->rotation);
if (old_x + old_w <= screen_info->cur_width &&
old_y + old_h <= screen_info->cur_height ) {
continue;
} else {
internal_crtc_disable (screen_info->crtcs[i]);
}
}
internal_screen_apply (screen_info);
for (i = 0; i < screen_info->n_crtc; i++) {
Status s;
crtc_info = screen_info->crtcs[i];
s = internal_crtc_apply (crtc_info);
if (RRSetConfigSuccess != s) {
fprintf (stderr, "crtc apply error\n");
}
}
return 1;
}
void internal_output_auto (struct ScreenInfo *screen_info, struct OutputInfo *output_info)
{
XRRModeInfo *mode_info;
RRMode mode_id;
struct CrtcInfo *crtc_info;
XRROutputInfo *probe_output_info;
if (RR_Disconnected == output_info->info->connection) {
XRRScreenResources *cur_res;
cur_res = XRRGetScreenResources (screen_info->dpy, screen_info->window);
probe_output_info = XRRGetOutputInfo (screen_info->dpy, cur_res, output_info->id);
if (RR_Disconnected != probe_output_info->connection) {
output_info->info = probe_output_info;
output_info->cur_crtc = internal_auto_find_crtc (screen_info, output_info);
}
}
mode_info = internal_preferred_mode (screen_info, output_info);
if (!mode_info) {
return;
}
mode_id = mode_info->id;
crtc_info = output_info->cur_crtc;
if (crtc_info) {
crtc_info->cur_mode_id = mode_id;
} else {
crtc_info = internal_auto_find_crtc (screen_info, output_info);
if (!crtc_info) {
#if RANDR_GUI_DEBUG
fprintf (stderr, "Can not find usable CRTC\n");
#endif
return;
} else {
screen_info->cur_output->cur_crtc = crtc_info;
screen_info->cur_crtc = crtc_info;
screen_info->cur_crtc->cur_noutput++;
fprintf (stderr, "n output: %d\n", screen_info->cur_crtc->cur_noutput);
screen_info->cur_crtc->cur_mode_id = mode_id;
screen_info->cur_crtc->changed = 1;
}
}
}
void internal_output_off (struct ScreenInfo *screen_info, struct OutputInfo *output)
{
if (output->cur_crtc) {
output->cur_crtc->cur_noutput--;
}
output->cur_crtc = NULL;
screen_info->cur_crtc = NULL;
output->off_set = 1;
}