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/*
* Copyright © 2001 Keith Packard, member of The XFree86 Project, Inc.
* Copyright © 2002 Hewlett Packard Company, Inc.
* Copyright © 2006 Intel Corporation
*
* 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.
*
* Thanks to Jim Gettys who wrote most of the client side code,
* and part of the server code for randr.
*/

#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Xlibint.h>
#include <X11/Xproto.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xrandr.h>
#include <X11/extensions/Xrender.h> /* we share subpixel information */
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdint.h>
#include <math.h>

#if RANDR_MAJOR > 1 || (RANDR_MAJOR == 1 && RANDR_MINOR >= 2)
#define HAS_RANDR_1_2 1
#endif

static char *program_name;
static Display *dpy;
static Window root;
static int screen = -1;
static Bool verbose = False;
static Bool automatic = False;
static Bool properties = False;

static char *direction[5] = {
    "normal",
    "left",
    "inverted",
    "right",
    "\n"};

static char *reflections[5] = {
    "normal",
    "x",
    "y",
    "xy",
    "\n"};

/* subpixel order */
static char *order[6] = {
    "unknown",
    "horizontal rgb",
    "horizontal bgr",
    "vertical rgb",
    "vertical bgr",
    "no subpixels"};

static const struct {
    char *string;
    unsigned long flag;
} mode_flags[] = {
    { "+HSync", RR_HSyncPositive },
    { "-HSync", RR_HSyncNegative },
    { "+VSync", RR_VSyncPositive },
    { "-VSync", RR_VSyncNegative },
    { "Interlace", RR_Interlace },
    { "DoubleScan", RR_DoubleScan },
    { "CSync", RR_CSync },
    { "+CSync", RR_CSyncPositive },
    { "-CSync", RR_CSyncNegative },
    { NULL, 0 }
};

static void
usage(void)
{
    fprintf(stderr, "usage: %s [options]\n", program_name);
    fprintf(stderr, " where options are:\n");
    fprintf(stderr, " -display <display> or -d <display>\n");
    fprintf(stderr, " -help\n");
    fprintf(stderr, " -o <normal,inverted,left,right,0,1,2,3>\n");
    fprintf(stderr, " or --orientation <normal,inverted,left,right,0,1,2,3>\n");
    fprintf(stderr, " -q or --query\n");
    fprintf(stderr, " -s <size>/<width>x<height> or --size <size>/<width>x<height>\n");
    fprintf(stderr, " -r <rate> or --rate <rate> or --refresh <rate>\n");
    fprintf(stderr, " -v or --version\n");
    fprintf(stderr, " -x (reflect in x)\n");
    fprintf(stderr, " -y (reflect in y)\n");
    fprintf(stderr, " --screen <screen>\n");
    fprintf(stderr, " --verbose\n");
    fprintf(stderr, " --dryrun\n");
#if HAS_RANDR_1_2
    fprintf(stderr, " --prop or --properties\n");
    fprintf(stderr, " --fb <width>x<height>\n");
    fprintf(stderr, " --fbmm <width>x<height>\n");
    fprintf(stderr, " --dpi <dpi>/<output>\n");
#if 0
fprintf(stderr, " --clone\n");
fprintf(stderr, " --extend\n");
#endif
    fprintf(stderr, " --output <output>\n");
    fprintf(stderr, " --auto\n");
    fprintf(stderr, " --mode <mode>\n");
    fprintf(stderr, " --preferred\n");
    fprintf(stderr, " --pos <x>x<y>\n");
    fprintf(stderr, " --rate <rate> or --refresh <rate>\n");
    fprintf(stderr, " --reflect normal,x,y,xy\n");
    fprintf(stderr, " --rotate normal,inverted,left,right\n");
    fprintf(stderr, " --left-of <output>\n");
    fprintf(stderr, " --right-of <output>\n");
    fprintf(stderr, " --above <output>\n");
    fprintf(stderr, " --below <output>\n");
    fprintf(stderr, " --same-as <output>\n");
    fprintf(stderr, " --set <property> <value>\n");
    fprintf(stderr, " --off\n");
    fprintf(stderr, " --crtc <crtc>\n");
    fprintf(stderr, " --newmode <name> <clock MHz>\n");
    fprintf(stderr, " <hdisp> <hsync-start> <hsync-end> <htotal>\n");
    fprintf(stderr, " <vdisp> <vsync-start> <vsync-end> <vtotal>\n");
    fprintf(stderr, " [+HSync] [-HSync] [+VSync] [-VSync]\n");
    fprintf(stderr, " --rmmode <name>\n");
    fprintf(stderr, " --addmode <output> <name>\n");
    fprintf(stderr, " --delmode <output> <name>\n");
#endif

    exit(1);
    /*NOTREACHED*/
}

static void
fatal (const char *format, ...)
{
    va_list ap;
    
    va_start (ap, format);
    fprintf (stderr, "%s: ", program_name);
    vfprintf (stderr, format, ap);
    va_end (ap);
    exit (1);
    /*NOTREACHED*/
}

static char *
rotation_name (Rotation rotation)
{
    int i;

    if ((rotation & 0xf) == 0)
return "normal";
    for (i = 0; i < 4; i++)
if (rotation & (1 << i))
return direction[i];
    return "invalid rotation";
}

static char *
reflection_name (Rotation rotation)
{
    rotation &= (RR_Reflect_X|RR_Reflect_Y);
    switch (rotation) {
    case 0:
return "none";
    case RR_Reflect_X:
return "X axis";
    case RR_Reflect_Y:
return "Y axis";
    case RR_Reflect_X|RR_Reflect_Y:
return "X and Y axis";
    }
    return "invalid reflection";
}

#if HAS_RANDR_1_2
typedef enum _policy {
    cloned, extend
} policy_t;

typedef enum _relation {
    left_of, right_of, above, below, same_as
} relation_t;

typedef enum _changes {
    changes_none = 0,
    changes_crtc = (1 << 0),
    changes_mode = (1 << 1),
    changes_relation = (1 << 2),
    changes_position = (1 << 3),
    changes_rotation = (1 << 4),
    changes_reflection = (1 << 5),
    changes_automatic = (1 << 6),
    changes_refresh = (1 << 7),
    changes_property = (1 << 8)
} changes_t;

typedef enum _name_kind {
    name_none = 0,
    name_string = (1 << 0),
    name_xid = (1 << 1),
    name_index = (1 << 2),
    name_preferred = (1 << 3)
} name_kind_t;

typedef struct {
    name_kind_t kind;
    char *string;
    XID xid;
    int index;
} name_t;

typedef struct _crtc crtc_t;
typedef struct _output output_t;
typedef struct _umode umode_t;
typedef struct _output_prop output_prop_t;

struct _crtc {
    name_t crtc;
    Bool changing;
    XRRCrtcInfo *crtc_info;

    XRRModeInfo *mode_info;
    int x;
    int y;
    Rotation rotation;
    output_t **outputs;
    int noutput;
};

struct _output_prop {
    struct _output_prop *next;
    char *name;
    char *value;
};

struct _output {
    struct _output *next;
    
    changes_t changes;
    
    output_prop_t *props;

    name_t output;
    XRROutputInfo *output_info;
    
    name_t crtc;
    crtc_t *crtc_info;
    crtc_t *current_crtc_info;
    
    name_t mode;
    float refresh;
    XRRModeInfo *mode_info;
    
    name_t addmode;

    relation_t relation;
    char *relative_to;

    int x, y;
    Rotation rotation;
    
    Bool automatic;
};

typedef enum _umode_action {
    umode_create, umode_destroy, umode_add, umode_delete
} umode_action_t;


struct _umode {
    struct _umode *next;
    
    umode_action_t action;
    XRRModeInfo mode;
    name_t output;
    name_t name;
};

/*

static char *connection[3] = {
"connected",
"disconnected",
"unknown connection"};

*/

static char *connection[3] = {
    "true",
    "false",
    "unknown"};

#define OUTPUT_NAME 1

#define CRTC_OFF 2
#define CRTC_UNSET 3
#define CRTC_INDEX 0x40000000

#define MODE_NAME 1
#define MODE_OFF 2
#define MODE_UNSET 3
#define MODE_PREF 4

#define POS_UNSET -1

static output_t *outputs = NULL;
static output_t **outputs_tail = &outputs;
static crtc_t *crtcs;
static umode_t *umodes;
static int num_crtcs;
static XRRScreenResources *res;
static int fb_width = 0, fb_height = 0;
static int fb_width_mm = 0, fb_height_mm = 0;
static float dpi = 0;
static char *dpi_output = NULL;
static Bool dryrun = False;
static int minWidth, maxWidth, minHeight, maxHeight;
static Bool has_1_2 = False;

static int
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;
    }
}

static int
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;
    }
}

/* v refresh frequency in Hz */
static float
mode_refresh (XRRModeInfo *mode_info)
{
    float rate;
    
    if (mode_info->hTotal && mode_info->vTotal)
rate = ((float) mode_info->dotClock /
((float) mode_info->hTotal * (float) mode_info->vTotal));
    else
     rate = 0;
    return rate;
}

/* h sync frequency in Hz */
static float
mode_hsync (XRRModeInfo *mode_info)
{
    float rate;
    
    if (mode_info->hTotal)
rate = (float) mode_info->dotClock / (float) mode_info->hTotal;
    else
     rate = 0;
    return rate;
}

static void
init_name (name_t *name)
{
    name->kind = name_none;
}

static void
set_name_string (name_t *name, char *string)
{
    name->kind |= name_string;
    name->string = string;
}

static void
set_name_xid (name_t *name, XID xid)
{
    name->kind |= name_xid;
    name->xid = xid;
}

static void
set_name_index (name_t *name, int index)
{
    name->kind |= name_index;
    name->index = index;
}

static void
set_name_preferred (name_t *name)
{
    name->kind |= name_preferred;
}

static void
set_name_all (name_t *name, name_t *old)
{
    if (old->kind & name_xid)
name->xid = old->xid;
    if (old->kind & name_string)
name->string = old->string;
    if (old->kind & name_index)
name->index = old->index;
    name->kind |= old->kind;
}

static void
set_name (name_t *name, char *string, name_kind_t valid)
{
    XID xid;
    int index;

    if ((valid & name_xid) && sscanf (string, "0x%lx", &xid) == 1)
set_name_xid (name, xid);
    else if ((valid & name_index) && sscanf (string, "%d", &index) == 1)
set_name_index (name, index);
    else if (valid & name_string)
set_name_string (name, string);
    else
usage ();
}

static output_t *
add_output (void)
{
    output_t *output = calloc (1, sizeof (output_t));

    if (!output)
fatal ("out of memory");
    output->next = NULL;
    *outputs_tail = output;
    outputs_tail = &output->next;
    return output;
}

static output_t *
find_output (name_t *name)
{
    output_t *output;

    for (output = outputs; output; output = output->next)
    {
name_kind_t common = name->kind & output->output.kind;

if ((common & name_xid) && name->xid == output->output.xid)
break;
if ((common & name_string) && !strcmp (name->string, output->output.string))
break;
if ((common & name_index) && name->index == output->output.index)
break;
    }
    return output;
}

static output_t *
find_output_by_xid (RROutput output)
{
    name_t output_name;

    init_name (&output_name);
    set_name_xid (&output_name, output);
    return find_output (&output_name);
}

static output_t *
find_output_by_name (char *name)
{
    name_t output_name;

    init_name (&output_name);
    set_name_string (&output_name, name);
    return find_output (&output_name);
}

static crtc_t *
find_crtc (name_t *name)
{
    int c;
    crtc_t *crtc = NULL;

    for (c = 0; c < num_crtcs; c++)
    {
name_kind_t common;

crtc = &crtcs[c];
common = name->kind & crtc->crtc.kind;

if ((common & name_xid) && name->xid == crtc->crtc.xid)
break;
if ((common & name_string) && !strcmp (name->string, crtc->crtc.string))
break;
if ((common & name_index) && name->index == crtc->crtc.index)
break;
crtc = NULL;
    }
    return crtc;
}

static crtc_t *
find_crtc_by_xid (RRCrtc crtc)
{
    name_t crtc_name;

    init_name (&crtc_name);
    set_name_xid (&crtc_name, crtc);
    return find_crtc (&crtc_name);
}

static XRRModeInfo *
find_mode (name_t *name, float refresh)
{
    int m;
    XRRModeInfo *best = NULL;
    float bestDist = 0;

    for (m = 0; m < res->nmode; m++)
    {
XRRModeInfo *mode = &res->modes[m];
if ((name->kind & name_xid) && name->xid == mode->id)
{
best = mode;
break;
}
if ((name->kind & name_string) && !strcmp (name->string, mode->name))
{
float dist;

if (refresh)
dist = fabs (mode_refresh (mode) - refresh);
else
dist = 0;
if (!best || dist < bestDist)
{
bestDist = dist;
best = mode;
}
break;
}
    }
    return best;
}

static XRRModeInfo *
find_mode_by_xid (RRMode mode)
{
    name_t mode_name;

    init_name (&mode_name);
    set_name_xid (&mode_name, mode);
    return find_mode (&mode_name, 0);
}

static XRRModeInfo *
find_mode_for_output (output_t *output, name_t *name)
{
    XRROutputInfo *output_info = output->output_info;
    int m;
    XRRModeInfo *best = NULL;
    float bestDist = 0;

    for (m = 0; m < output_info->nmode; m++)
    {
XRRModeInfo *mode;

mode = find_mode_by_xid (output_info->modes[m]);
if (!mode) continue;
if ((name->kind & name_xid) && name->xid == mode->id)
{
best = mode;
break;
}
if ((name->kind & name_string) && !strcmp (name->string, mode->name))
{
float dist;

if (output->refresh)
dist = fabs (mode_refresh (mode) - output->refresh);
else
dist = 0;
if (!best || dist < bestDist)
{
bestDist = dist;
best = mode;
}
}
    }
    return best;
}

XRRModeInfo *
preferred_mode (output_t *output)
{
    XRROutputInfo *output_info = output->output_info;
    int m;
    XRRModeInfo *best;
    int bestDist;
    
    best = NULL;
    bestDist = 0;
    for (m = 0; m < output_info->nmode; m++)
    {
XRRModeInfo *mode_info = find_mode_by_xid (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;
}

static Bool
output_can_use_crtc (output_t *output, crtc_t *crtc)
{
    XRROutputInfo *output_info = output->output_info;
    int c;

    for (c = 0; c < output_info->ncrtc; c++)
if (output_info->crtcs[c] == crtc->crtc.xid)
return True;
    return False;
}

static Bool
output_can_use_mode (output_t *output, XRRModeInfo *mode)
{
    XRROutputInfo *output_info = output->output_info;
    int m;

    for (m = 0; m < output_info->nmode; m++)
if (output_info->modes[m] == mode->id)
return True;
    return False;
}

static Bool
crtc_can_use_rotation (crtc_t *crtc, Rotation rotation)
{
    Rotation rotations = crtc->crtc_info->rotations;
    Rotation dir = rotation & (RR_Rotate_0|RR_Rotate_90|RR_Rotate_180|RR_Rotate_270);
    Rotation reflect = rotation & (RR_Reflect_X|RR_Reflect_Y);
    if (((rotations & dir) != 0) && ((rotations & reflect) == reflect))
return True;
    return False;
}

static Bool
output_can_use_rotation (output_t *output, Rotation rotation)
{
    XRROutputInfo *output_info = output->output_info;
    int c;

    /* make sure all of the crtcs can use this rotation.
* yes, this is not strictly necessary, but it is
* simpler,and we expect most drivers to either
* support rotation everywhere or nowhere
*/
    for (c = 0; c < output_info->ncrtc; c++)
    {
crtc_t *crtc = find_crtc_by_xid (output_info->crtcs[c]);
if (crtc && !crtc_can_use_rotation (crtc, rotation))
return False;
    }
    return True;
}

static void
set_output_info (output_t *output, RROutput xid, XRROutputInfo *output_info)
{
    /* sanity check output info */
    if (output_info->connection != RR_Disconnected && !output_info->nmode)
fatal ("Output %s is not disconnected but has no modes\n",
output_info->name);
    
    /* set output name and info */
    if (!(output->output.kind & name_xid))
set_name_xid (&output->output, xid);
    if (!(output->output.kind & name_string))
set_name_string (&output->output, output_info->name);
    output->output_info = output_info;
    
    /* set crtc name and info */
    if (!(output->changes & changes_crtc))
set_name_xid (&output->crtc, output_info->crtc);
    
    if (output->crtc.kind == name_xid && output->crtc.xid == None)
output->crtc_info = NULL;
    else
    {
output->crtc_info = find_crtc (&output->crtc);
if (!output->crtc_info)
{
if (output->crtc.kind & name_xid)
fatal ("cannot find crtc 0x%x\n", output->crtc.xid);
if (output->crtc.kind & name_index)
fatal ("cannot find crtc %d\n", output->crtc.index);
}
if (!output_can_use_crtc (output, output->crtc_info))
fatal ("output %s cannot use crtc 0x%x\n", output->output.string,
output->crtc_info->crtc.xid);
    }

    /* set mode name and info */
    if (!(output->changes & changes_mode))
    {
if (output->crtc_info)
set_name_xid (&output->mode, output->crtc_info->crtc_info->mode);
else
set_name_xid (&output->mode, None);
if (output->mode.xid)
{
output->mode_info = find_mode_by_xid (output->mode.xid);
if (!output->mode_info)
fatal ("server did not report mode 0x%x for output %s\n",
output->mode.xid, output->output.string);
}
else
output->mode_info = NULL;
    }
    else if (output->mode.kind == name_xid && output->mode.xid == None)
output->mode_info = NULL;
    else
    {
if (output->mode.kind == name_preferred)
output->mode_info = preferred_mode (output);
else
output->mode_info = find_mode_for_output (output, &output->mode);
if (!output->mode_info)
{
if (output->mode.kind & name_preferred)
fatal ("cannot find preferred mode\n");
if (output->mode.kind & name_string)
fatal ("cannot find mode %s\n", output->mode.string);
if (output->mode.kind & name_xid)
fatal ("cannot find mode 0x%x\n", output->mode.xid);
}
if (!output_can_use_mode (output, output->mode_info))
fatal ("output %s cannot use mode %s\n", output->output.string,
output->mode_info->name);
    }

    /* set position */
    if (!(output->changes & changes_position))
    {
if (output->crtc_info)
{
output->x = output->crtc_info->crtc_info->x;
output->y = output->crtc_info->crtc_info->y;
}
else
{
output->x = 0;
output->y = 0;
}
    }

    /* set rotation */
    if (!(output->changes & changes_rotation))
    {
output->rotation &= ~0xf;
if (output->crtc_info)
output->rotation |= (output->crtc_info->crtc_info->rotation & 0xf);
else
output->rotation = RR_Rotate_0;
    }
    if (!(output->changes & changes_reflection))
    {
output->rotation &= ~(RR_Reflect_X|RR_Reflect_Y);
if (output->crtc_info)
output->rotation |= (output->crtc_info->crtc_info->rotation &
(RR_Reflect_X|RR_Reflect_Y));
    }
    if (!output_can_use_rotation (output, output->rotation))
fatal ("output %s cannot use rotation \"%s\" reflection \"%s\"\n",
output->output.string,
rotation_name (output->rotation),
reflection_name (output->rotation));
}
    
static void
get_screen (void)
{
    if (!has_1_2)
        fatal ("Server RandR version before 1.2\n");
    
    XRRGetScreenSizeRange (dpy, root, &minWidth, &minHeight,
&maxWidth, &maxHeight);
    
    res = XRRGetScreenResources (dpy, root);
    if (!res) fatal ("could not get screen resources");
}

static void
get_crtcs (void)
{
    int c;

    num_crtcs = res->ncrtc;
    crtcs = calloc (num_crtcs, sizeof (crtc_t));
    if (!crtcs) fatal ("out of memory");
    
    for (c = 0; c < res->ncrtc; c++)
    {
XRRCrtcInfo *crtc_info = XRRGetCrtcInfo (dpy, res, res->crtcs[c]);
set_name_xid (&crtcs[c].crtc, res->crtcs[c]);
set_name_index (&crtcs[c].crtc, c);
if (!crtc_info) fatal ("could not get crtc 0x%x information", res->crtcs[c]);
crtcs[c].crtc_info = crtc_info;
if (crtc_info->mode == None)
{
crtcs[c].mode_info = NULL;
crtcs[c].x = 0;
crtcs[c].y = 0;
crtcs[c].rotation = RR_Rotate_0;
}
    }
}

static void
crtc_add_output (crtc_t *crtc, output_t *output)
{
    if (crtc->outputs)
crtc->outputs = realloc (crtc->outputs, (crtc->noutput + 1) * sizeof (output_t *));
    else
    {
crtc->outputs = malloc (sizeof (output_t *));
crtc->x = output->x;
crtc->y = output->y;
crtc->rotation = output->rotation;
crtc->mode_info = output->mode_info;
    }
    if (!crtc->outputs) fatal ("out of memory");
    crtc->outputs[crtc->noutput++] = output;
}

static void
set_crtcs (void)
{
    output_t *output;

    for (output = outputs; output; output = output->next)
    {
if (!output->mode_info) continue;
crtc_add_output (output->crtc_info, output);
    }
}

static Status
crtc_disable (crtc_t *crtc)
{
    if (verbose)
     printf ("crtc %d: disable\n", crtc->crtc.index);

    if (dryrun)
return RRSetConfigSuccess;
    return XRRSetCrtcConfig (dpy, res, crtc->crtc.xid, CurrentTime,
0, 0, None, RR_Rotate_0, NULL, 0);
}

static Status
crtc_revert (crtc_t *crtc)
{
    XRRCrtcInfo *crtc_info = crtc->crtc_info;
    
    if (verbose)
     printf ("crtc %d: revert\n", crtc->crtc.index);

    if (dryrun)
return RRSetConfigSuccess;
    return XRRSetCrtcConfig (dpy, res, crtc->crtc.xid, CurrentTime,
crtc_info->x, crtc_info->y,
crtc_info->mode, crtc_info->rotation,
crtc_info->outputs, crtc_info->noutput);
}

static Status
crtc_apply (crtc_t *crtc)
{
    RROutput *rr_outputs;
    int o;
    Status s;
    RRMode mode = None;

    if (!crtc->changing || !crtc->mode_info)
return RRSetConfigSuccess;

    rr_outputs = calloc (crtc->noutput, sizeof (RROutput));
    if (!rr_outputs)
return BadAlloc;
    for (o = 0; o < crtc->noutput; o++)
rr_outputs[o] = crtc->outputs[o]->output.xid;
    mode = crtc->mode_info->id;
    if (verbose) {
printf ("crtc %d: %12s %6.1f +%d+%d", crtc->crtc.index,
crtc->mode_info->name, mode_refresh (crtc->mode_info),
crtc->x, crtc->y);
for (o = 0; o < crtc->noutput; o++)
printf (" \"%s\"", crtc->outputs[o]->output.string);
printf ("\n");
    }
    
    if (dryrun)
s = RRSetConfigSuccess;
    else
s = XRRSetCrtcConfig (dpy, res, crtc->crtc.xid, CurrentTime,
crtc->x, crtc->y, mode, crtc->rotation,
rr_outputs, crtc->noutput);
    free (rr_outputs);
    return s;
}

static void
screen_revert (void)
{
    if (verbose)
printf ("screen %d: revert\n", screen);

    if (dryrun)
return;
    XRRSetScreenSize (dpy, root,
DisplayWidth (dpy, screen),
DisplayHeight (dpy, screen),
DisplayWidthMM (dpy, screen),
DisplayHeightMM (dpy, screen));
}

static void
screen_apply (void)
{
    if (fb_width == DisplayWidth (dpy, screen) &&
fb_height == DisplayHeight (dpy, screen) &&
fb_width_mm == DisplayWidthMM (dpy, screen) &&
fb_height_mm == DisplayHeightMM (dpy, screen))
    {
return;
    }
    if (verbose)
printf ("screen %d: %dx%d %dx%d mm %6.2fdpi\n", screen,
fb_width, fb_height, fb_width_mm, fb_height_mm, dpi);
    if (dryrun)
return;
    XRRSetScreenSize (dpy, root, fb_width, fb_height,
fb_width_mm, fb_height_mm);
}

static void
revert (void)
{
    int c;

    /* first disable all crtcs */
    for (c = 0; c < res->ncrtc; c++)
crtc_disable (&crtcs[c]);
    /* next reset screen size */
    screen_revert ();
    /* now restore all crtcs */
    for (c = 0; c < res->ncrtc; c++)
crtc_revert (&crtcs[c]);
}

/*
* uh-oh, something bad happened in the middle of changing
* the configuration. Revert to the previous configuration
* and bail
*/
static void
panic (Status s, crtc_t *crtc)
{
    int c = crtc->crtc.index;
    char *message;
    
    switch (s) {
    case RRSetConfigSuccess: message = "succeeded"; break;
    case BadAlloc: message = "out of memory"; break;
    case RRSetConfigFailed: message = "failed"; break;
    case RRSetConfigInvalidConfigTime: message = "invalid config time"; break;
    case RRSetConfigInvalidTime: message = "invalid time"; break;
    default: message = "unknown failure"; break;
    }
    
    fprintf (stderr, "%s: Configure crtc %d %s\n", program_name, c, message);
    revert ();
    exit (1);
}

void
apply (void)
{
    Status s;
    int c;
    
    /*
* Turn off any crtcs which are to be disabled or which are
* larger than the target size
*/
    for (c = 0; c < res->ncrtc; c++)
    {
crtc_t *crtc = &crtcs[c];
XRRCrtcInfo *crtc_info = crtc->crtc_info;

/* if this crtc is already disabled, skip it */
if (crtc_info->mode == None)
continue;

/*
* If this crtc is to be left enabled, make
* sure the old size fits then new screen
*/
if (crtc->mode_info)
{
XRRModeInfo *old_mode = find_mode_by_xid (crtc_info->mode);
int x, y, w, h;

if (!old_mode)
panic (RRSetConfigFailed, crtc);

/* old position and size information */
x = crtc_info->x;
y = crtc_info->y;
w = mode_width (old_mode, crtc_info->rotation);
h = mode_height (old_mode, crtc_info->rotation);

/* if it fits, skip it */
if (x + w <= fb_width && y + h <= fb_height)
continue;
crtc->changing = True;
}
s = crtc_disable (crtc);
if (s != RRSetConfigSuccess)
panic (s, crtc);
    }

    /*
* Hold the server grabbed while messing with
* the screen so that apps which notice the resize
* event receive up-to-date information
*/
    XGrabServer (dpy);
    
    /*
* Set the screen size
*/
    screen_apply ();
    
    /*
* Set crtcs
*/

    for (c = 0; c < res->ncrtc; c++)
    {
crtc_t *crtc = &crtcs[c];

s = crtc_apply (crtc);
if (s != RRSetConfigSuccess)
panic (s, crtc);
    }
    /*
* Release the server grab and let all clients
* respond to the updated state
*/
    XUngrabServer (dpy);
}

/*
* Use current output state to complete the output list
*/
void
get_outputs (void)
{
    int o;
    
    for (o = 0; o < res->noutput; o++)
    {
XRROutputInfo *output_info = XRRGetOutputInfo (dpy, res, res->outputs[o]);
output_t *output;
name_t output_name;
if (!output_info) fatal ("could not get output 0x%x information", res->outputs[o]);
set_name_xid (&output_name, res->outputs[o]);
set_name_index (&output_name, o);
set_name_string (&output_name, output_info->name);
output = find_output (&output_name);
if (!output)
{
output = add_output ();
set_name_all (&output->output, &output_name);
/*
* When global --automatic mode is set, turn on connected but off
* outputs, turn off disconnected but on outputs
*/
if (automatic)
{
switch (output_info->connection) {
case RR_Connected:
if (!output_info->crtc) {
output->changes |= changes_automatic;
output->automatic = True;
}
break;
case RR_Disconnected:
if (output_info->crtc)
{
output->changes |= changes_automatic;
output->automatic = True;
}
break;
}
}
}

/*
* Automatic mode -- track connection state and enable/disable outputs
* as necessary
*/
if (output->automatic)
{
switch (output_info->connection) {
case RR_Connected:
case RR_UnknownConnection:
if ((!(output->changes & changes_mode)))
{
set_name_preferred (&output->mode);
output->changes |= changes_mode;
}
break;
case RR_Disconnected:
if ((!(output->changes & changes_mode)))
{
set_name_xid (&output->mode, None);
set_name_xid (&output->crtc, None);
output->changes |= changes_mode;
output->changes |= changes_crtc;
}
break;
}
}

set_output_info (output, res->outputs[o], output_info);
    }
}

void
mark_changing_crtcs (void)
{
    int c;

    for (c = 0; c < num_crtcs; c++)
    {
crtc_t *crtc = &crtcs[c];
int o;
output_t *output;

/* walk old output list (to catch disables) */
for (o = 0; o < crtc->crtc_info->noutput; o++)
{
output = find_output_by_xid (crtc->crtc_info->outputs[o]);
if (!output) fatal ("cannot find output 0x%x\n",
crtc->crtc_info->outputs[o]);
if (output->changes)
crtc->changing = True;
}
/* walk new output list */
for (o = 0; o < crtc->noutput; o++)
{
output = crtc->outputs[o];
if (output->changes)
crtc->changing = True;
}
    }
}

/*
* Test whether 'crtc' can be used for 'output'
*/
Bool
check_crtc_for_output (crtc_t *crtc, output_t *output)
{
    int c;
    int l;
    output_t *other;
    
    for (c = 0; c < output->output_info->ncrtc; c++)
if (output->output_info->crtcs[c] == crtc->crtc.xid)
break;
    if (c == output->output_info->ncrtc)
return False;
    for (other = outputs; other; other = other->next)
    {
if (other == output)
continue;

if (other->mode_info == NULL)
continue;

if (other->crtc_info != crtc)
continue;

/* see if the output connected to the crtc can clone to this output */
for (l = 0; l < output->output_info->nclone; l++)
if (output->output_info->clones[l] == other->output.xid)
break;
/* not on the list, can't clone */
if (l == output->output_info->nclone)
return False;
    }

    if (crtc->noutput)
    {
/* make sure the state matches */
if (crtc->mode_info != output->mode_info)
return False;
if (crtc->x != output->x)
return False;
if (crtc->y != output->y)
return False;
if (crtc->rotation != output->rotation)
return False;
    }
    return True;
}

crtc_t *
find_crtc_for_output (output_t *output)
{
    int c;

    for (c = 0; c < output->output_info->ncrtc; c++)
    {
crtc_t *crtc;

crtc = find_crtc_by_xid (output->output_info->crtcs[c]);
if (!crtc) fatal ("cannot find crtc 0x%x\n", output->output_info->crtcs[c]);

if (check_crtc_for_output (crtc, output))
return crtc;
    }
    return NULL;
}

static void
set_positions (void)
{
    output_t *output;
    Bool keep_going;
    Bool any_set;
    int min_x, min_y;

    for (;;)
    {
any_set = False;
keep_going = False;
for (output = outputs; output; output = output->next)
{
output_t *relation;
name_t relation_name;

if (!(output->changes & changes_relation)) continue;

if (output->mode_info == NULL) continue;

init_name (&relation_name);
set_name_string (&relation_name, output->relative_to);
relation = find_output (&relation_name);
if (!relation) fatal ("cannot find output \"%s\"\n", output->relative_to);

if (relation->mode_info == NULL)
{
output->x = 0;
output->y = 0;
output->changes |= changes_position;
any_set = True;
continue;
}
/*
* Make sure the dependent object has been set in place
*/
if ((relation->changes & changes_relation) &&
!(relation->changes & changes_position))
{
keep_going = True;
continue;
}

switch (output->relation) {
case left_of:
output->y = relation->y;
output->x = relation->x - mode_width (output->mode_info, output->rotation);
break;
case right_of:
output->y = relation->y;
output->x = relation->x + mode_width (relation->mode_info, relation->rotation);
break;
case above:
output->x = relation->x;
output->y = relation->y - mode_height (output->mode_info, output->rotation);
break;
case below:
output->x = relation->x;
output->y = relation->y + mode_height (relation->mode_info, relation->rotation);
break;
case same_as:
output->x = relation->x;
output->y = relation->y;
}
output->changes |= changes_position;
any_set = True;
}
if (!keep_going)
break;
if (!any_set)
fatal ("loop in relative position specifications\n");
    }

    /*
* Now normalize positions so the upper left corner of all outputs is at 0,0
*/
    min_x = 32768;
    min_y = 32768;
    for (output = outputs; output; output = output->next)
    {
if (output->mode_info == NULL) continue;

if (output->x < min_x) min_x = output->x;
if (output->y < min_y) min_y = output->y;
    }
    if (min_x || min_y)
    {
/* move all outputs */
for (output = outputs; output; output = output->next)
{
if (output->mode_info == NULL) continue;

output->x -= min_x;
output->y -= min_y;
output->changes |= changes_position;
}
    }
}

static void
set_screen_size (void)
{
    output_t *output;
    Bool fb_specified = fb_width != 0 && fb_height != 0;
    
    for (output = outputs; output; output = output->next)
    {
XRRModeInfo *mode_info = output->mode_info;
int x, y, w, h;

if (!mode_info) continue;

x = output->x;
y = output->y;
w = mode_width (mode_info, output->rotation);
h = mode_height (mode_info, output->rotation);
/* make sure output fits in specified size */
if (fb_specified)
{
if (x + w > fb_width || y + h > fb_height)
fatal ("specified screen %dx%d not large enough for output %s (%dx%d+%d+%d)\n",
fb_width, fb_height, output->output.string, w, h, x, y);
}
/* fit fb to output */
else
{
if (x + w > fb_width) fb_width = x + w;
if (y + h > fb_height) fb_height = y + h;
}
    }

    if (fb_width > maxWidth || fb_height > maxHeight)
        fatal ("screen cannot be larger than %dx%d (desired size %dx%d)\n",
maxWidth, maxHeight, fb_width, fb_height);
    if (fb_specified)
    {
if (fb_width < minWidth || fb_height < minHeight)
fatal ("screen must be at least %dx%d\n", minWidth, minHeight);
    }
    else
    {
if (fb_width < minWidth) fb_width = minWidth;
if (fb_height < minHeight) fb_height = minHeight;
    }
}
#endif
    
void
disable_outputs (output_t *outputs)
{
    while (outputs)
    {
outputs->crtc_info = NULL;
outputs = outputs->next;
    }
}

/*
* find the best mapping from output to crtc available
*/
int
pick_crtcs_score (output_t *outputs)
{
    output_t *output;
    int best_score;
    int my_score;
    int score;
    crtc_t *best_crtc;
    int c;
    
    if (!outputs)
return 0;
    
    output = outputs;
    outputs = outputs->next;
    /*
* Score with this output disabled
*/
    output->crtc_info = NULL;
    best_score = pick_crtcs_score (outputs);
    if (output->mode_info == NULL)
return best_score;

    best_crtc = NULL;
    /*
* Now score with this output any valid crtc
*/
    for (c = 0; c < output->output_info->ncrtc; c++)
    {
crtc_t *crtc;

crtc = find_crtc_by_xid (output->output_info->crtcs[c]);
if (!crtc)
fatal ("cannot find crtc 0x%x\n", output->output_info->crtcs[c]);

/* reset crtc allocation for following outputs */
disable_outputs (outputs);
if (!check_crtc_for_output (crtc, output))
continue;

my_score = 1000;
/* slight preference for existing connections */
if (crtc == output->current_crtc_info)
my_score++;

output->crtc_info = crtc;
score = my_score + pick_crtcs_score (outputs);
if (score > best_score)
{
best_crtc = crtc;
best_score = score;
}
    }
    /*
* Reset other outputs based on this one using the best crtc
*/
    if (output->crtc_info != best_crtc)
    {
output->crtc_info = best_crtc;
(void) pick_crtcs_score (outputs);
    }
    return best_score;
}

/*
* Pick crtcs for any changing outputs that don't have one
*/
void
pick_crtcs (void)
{
    output_t *output;

    /*
* First try to match up newly enabled outputs with spare crtcs
*/
    for (output = outputs; output; output = output->next)
    {
if (output->changes && output->mode_info && !output->crtc_info)
{
output->crtc_info = find_crtc_for_output (output);
if (!output->crtc_info)
break;
}
    }
    /*
* Everyone is happy
*/
    if (!output)
return;
    /*
* When the simple way fails, see if there is a way
* to swap crtcs around and make things work
*/
    for (output = outputs; output; output = output->next)
output->current_crtc_info = output->crtc_info;
    pick_crtcs_score (outputs);
    for (output = outputs; output; output = output->next)
    {
if (output->mode_info && !output->crtc_info)
fatal ("cannot find crtc for output %s\n", output->output.string);
if (!output->changes && output->crtc_info != output->current_crtc_info)
output->changes |= changes_crtc;
    }
}

int
main (int argc, char **argv)
{
    XRRScreenSize *sizes;
    XRRScreenConfiguration *sc;
    int nsize;
    int nrate;
    short *rates;
    Status status = RRSetConfigFailed;
    int rot = -1;
    int query = 0;
    Rotation rotation, current_rotation, rotations;
    XRRScreenChangeNotifyEvent event;
    XRRScreenChangeNotifyEvent *sce;
    char *display_name = NULL;
    int i, j;
    SizeID current_size;
    short current_rate;
    float rate = -1;
    int size = -1;
    int dirind = 0;
    Bool setit = False;
    Bool version = False;
    int event_base, error_base;
    int reflection = 0;
    int width = 0, height = 0;
    Bool have_pixel_size = False;
    int ret = 0;
#if HAS_RANDR_1_2
    output_t *output = NULL;
    policy_t policy = cloned;
    Bool setit_1_2 = False;
    Bool query_1_2 = False;
    Bool modeit = False;
    Bool propit = False;
    Bool query_1 = False;
    int major, minor;
#endif

    program_name = argv[0];
    if (argc == 1) query = True;
    for (i = 1; i < argc; i++) {
if (!strcmp ("-display", argv[i]) || !strcmp ("-d", argv[i])) {
if (++i>=argc) usage ();
display_name = argv[i];
continue;
}
if (!strcmp("-help", argv[i])) {
usage();
continue;
}
if (!strcmp ("--verbose", argv[i])) {
verbose = True;
continue;
}
if (!strcmp ("--dryrun", argv[i])) {
dryrun = True;
verbose = True;
continue;
}

if (!strcmp ("-s", argv[i]) || !strcmp ("--size", argv[i])) {
if (++i>=argc) usage ();
if (sscanf (argv[i], "%dx%d", &width, &height) == 2)
have_pixel_size = True;
else {
size = atoi (argv[i]);
if (size < 0) usage();
}
setit = True;
continue;
}

if (!strcmp ("-r", argv[i]) ||
!strcmp ("--rate", argv[i]) ||
!strcmp ("--refresh", argv[i]))
{
if (++i>=argc) usage ();
if (sscanf (argv[i], "%f", &rate) != 1)
usage ();
setit = True;
#if HAS_RANDR_1_2
if (output)
{
output->refresh = rate;
output->changes |= changes_refresh;
setit_1_2 = True;
}
#endif
continue;
}

if (!strcmp ("-v", argv[i]) || !strcmp ("--version", argv[i])) {
version = True;
continue;
}

if (!strcmp ("-x", argv[i])) {
reflection |= RR_Reflect_X;
setit = True;
continue;
}
if (!strcmp ("-y", argv[i])) {
reflection |= RR_Reflect_Y;
setit = True;
continue;
}
if (!strcmp ("--screen", argv[i])) {
if (++i>=argc) usage ();
screen = atoi (argv[i]);
if (screen < 0) usage();
continue;
}
if (!strcmp ("-q", argv[i]) || !strcmp ("--query", argv[i])) {
query = True;
continue;
}
if (!strcmp ("-o", argv[i]) || !strcmp ("--orientation", argv[i])) {
char *endptr;
if (++i>=argc) usage ();
dirind = strtol(argv[i], &endptr, 0);
if (*endptr != '\0') {
for (dirind = 0; dirind < 4; dirind++) {
if (strcmp (direction[dirind], argv[i]) == 0) break;
}
if ((dirind < 0) || (dirind > 3)) usage();
}
rot = dirind;
setit = True;
continue;
}
#if HAS_RANDR_1_2
if (!strcmp ("--prop", argv[i]) || !strcmp ("--properties", argv[i]))
{
query_1_2 = True;
properties = True;
continue;
}
if (!strcmp ("--output", argv[i])) {
if (++i >= argc) usage();
output = add_output ();

set_name (&output->output, argv[i], name_string|name_xid);

setit_1_2 = True;
continue;
}
if (!strcmp ("--crtc", argv[i])) {
if (++i >= argc) usage();
if (!output) usage();
set_name (&output->crtc, argv[i], name_xid|name_index);
output->changes |= changes_crtc;
continue;
}
if (!strcmp ("--mode", argv[i])) {
if (++i >= argc) usage();
if (!output) usage();
set_name (&output->mode, argv[i], name_string|name_xid);
output->changes |= changes_mode;
continue;
}
if (!strcmp ("--preferred", argv[i])) {
if (!output) usage();
set_name_preferred (&output->mode);
output->changes |= changes_mode;
continue;
}
if (!strcmp ("--pos", argv[i])) {
if (++i>=argc) usage ();
if (!output) usage();
if (sscanf (argv[i], "%dx%d",
&output->x, &output->y) != 2)
usage ();
output->changes |= changes_position;
continue;
}
if (!strcmp ("--rotation", argv[i]) || !strcmp ("--rotate", argv[i])) {
if (++i>=argc) usage ();
if (!output) usage();
for (dirind = 0; dirind < 4; dirind++) {
if (strcmp (direction[dirind], argv[i]) == 0) break;
}
if (dirind == 4)
usage ();
output->rotation &= ~0xf;
output->rotation |= 1 << dirind;
output->changes |= changes_rotation;
continue;
}
if (!strcmp ("--reflect", argv[i]) || !strcmp ("--reflection", argv[i])) {
if (++i>=argc) usage ();
if (!output) usage();
for (dirind = 0; dirind < 4; dirind++) {
if (strcmp (reflections[dirind], argv[i]) == 0) break;
}
if (dirind == 4)
usage ();
output->rotation &= ~(RR_Reflect_X|RR_Reflect_Y);
output->rotation |= dirind * RR_Reflect_X;
output->changes |= changes_reflection;
continue;
}
if (!strcmp ("--left-of", argv[i])) {
if (++i>=argc) usage ();
if (!output) usage();
output->relation = left_of;
output->relative_to = argv[i];
output->changes |= changes_relation;
continue;
}
if (!strcmp ("--right-of", argv[i])) {
if (++i>=argc) usage ();
if (!output) usage();
output->relation = right_of;
output->relative_to = argv[i];
output->changes |= changes_relation;
continue;
}
if (!strcmp ("--above", argv[i])) {
if (++i>=argc) usage ();
if (!output) usage();
output->relation = above;
output->relative_to = argv[i];
output->changes |= changes_relation;
continue;
}
if (!strcmp ("--below", argv[i])) {
if (++i>=argc) usage ();
if (!output) usage();
output->relation = below;
output->relative_to = argv[i];
output->changes |= changes_relation;
continue;
}
if (!strcmp ("--same-as", argv[i])) {
if (++i>=argc) usage ();
if (!output) usage();
output->relation = same_as;
output->relative_to = argv[i];
output->changes |= changes_relation;
continue;
}
if (!strcmp ("--set", argv[i])) {
output_prop_t *prop;
if (!output) usage();
prop = malloc (sizeof (output_prop_t));
prop->next = output->props;
output->props = prop;
if (++i>=argc) usage ();
prop->name = argv[i];
if (++i>=argc) usage ();
prop->value = argv[i];
propit = True;
output->changes |= changes_property;
setit_1_2 = True;
continue;
}
if (!strcmp ("--off", argv[i])) {
if (!output) usage();
set_name_xid (&output->mode, None);
set_name_xid (&output->crtc, None);
output->changes |= changes_mode;
continue;
}
if (!strcmp ("--fb", argv[i])) {
if (++i>=argc) usage ();
if (sscanf (argv[i], "%dx%d",
&fb_width, &fb_height) != 2)
usage ();
setit_1_2 = True;
continue;
}
if (!strcmp ("--fbmm", argv[i])) {
if (++i>=argc) usage ();
if (sscanf (argv[i], "%dx%d",
&fb_width_mm, &fb_height_mm) != 2)
usage ();
setit_1_2 = True;
continue;
}
if (!strcmp ("--dpi", argv[i])) {
if (++i>=argc) usage ();
if (sscanf (argv[i], "%f", &dpi) != 1)
{
dpi = 0.0;
dpi_output = argv[i];
}
setit_1_2 = True;
continue;
}
if (!strcmp ("--clone", argv[i])) {
policy = cloned;
setit_1_2 = True;
continue;
}
if (!strcmp ("--extend", argv[i])) {
policy = extend;
setit_1_2 = True;
continue;
}
if (!strcmp ("--auto", argv[i])) {
if (output)
{
output->automatic = True;
output->changes |= changes_automatic;
}
else
automatic = True;
setit_1_2 = True;
continue;
}
if (!strcmp ("--q12", argv[i]))
{
query_1_2 = True;
continue;
}
if (!strcmp ("--q1", argv[i]))
{
query_1 = True;
continue;
}
if (!strcmp ("--newmode", argv[i]))
{
umode_t *m = malloc (sizeof (umode_t));
float clock;

++i;
if (i + 9 >= argc) usage ();
m->mode.name = argv[i];
m->mode.nameLength = strlen (argv[i]);
i++;
if (sscanf (argv[i++], "%f", &clock) != 1)
usage ();
m->mode.dotClock = clock * 1e6;

if (sscanf (argv[i++], "%d", &m->mode.width) != 1) usage();
if (sscanf (argv[i++], "%d", &m->mode.hSyncStart) != 1) usage();
if (sscanf (argv[i++], "%d", &m->mode.hSyncEnd) != 1) usage();
if (sscanf (argv[i++], "%d", &m->mode.hTotal) != 1) usage();
if (sscanf (argv[i++], "%d", &m->mode.height) != 1) usage();
if (sscanf (argv[i++], "%d", &m->mode.vSyncStart) != 1) usage();
if (sscanf (argv[i++], "%d", &m->mode.vSyncEnd) != 1) usage();
if (sscanf (argv[i++], "%d", &m->mode.vTotal) != 1) usage();
m->mode.modeFlags = 0;
while (i < argc) {
int f;

for (f = 0; mode_flags[f].string; f++)
if (!strcasecmp (mode_flags[f].string, argv[i]))
break;

if (!mode_flags[f].string)
break;
     m->mode.modeFlags |= mode_flags[f].flag;
     i++;
}
m->next = umodes;
m->action = umode_create;
umodes = m;
modeit = True;
continue;
}
if (!strcmp ("--rmmode", argv[i]))
{
umode_t *m = malloc (sizeof (umode_t));

if (++i>=argc) usage ();
set_name (&m->name, argv[i], name_string|name_xid);
m->action = umode_destroy;
m->next = umodes;
umodes = m;
modeit = True;
continue;
}
if (!strcmp ("--addmode", argv[i]))
{
umode_t *m = malloc (sizeof (umode_t));

if (++i>=argc) usage ();
set_name (&m->output, argv[i], name_string|name_xid);
if (++i>=argc) usage();
set_name (&m->name, argv[i], name_string|name_xid);
m->action = umode_add;
m->next = umodes;
umodes = m;
modeit = True;
continue;
}
if (!strcmp ("--delmode", argv[i]))
{
umode_t *m = malloc (sizeof (umode_t));

if (++i>=argc) usage ();
set_name (&m->output, argv[i], name_string|name_xid);
if (++i>=argc) usage();
set_name (&m->name, argv[i], name_string|name_xid);
m->action = umode_delete;
m->next = umodes;
umodes = m;
modeit = True;
continue;
}
#endif
usage();
    }
    if (verbose)
    {
query = True;
if (setit && !setit_1_2)
query_1 = True;
    }

    dpy = XOpenDisplay (display_name);

    if (dpy == NULL) {
fprintf (stderr, "Can't open display %s\n", XDisplayName(display_name));
exit (1);
    }
    if (screen < 0)
screen = DefaultScreen (dpy);
    if (screen >= ScreenCount (dpy)) {
fprintf (stderr, "Invalid screen number %d (display has %d)\n",
screen, ScreenCount (dpy));
exit (1);
    }

    root = RootWindow (dpy, screen);

#if HAS_RANDR_1_2
    if (!XRRQueryVersion (dpy, &major, &minor))
    {
fprintf (stderr, "RandR extension missing\n");
exit (1);
    }
    if (major > 1 || (major == 1 && minor >= 2))
has_1_2 = True;

    if (has_1_2 && modeit)
    {
umode_t *m;

        get_screen ();
get_crtcs();
get_outputs();

for (m = umodes; m; m = m->next)
{
XRRModeInfo *e;
output_t *o;

switch (m->action) {
case umode_create:
XRRCreateMode (dpy, root, &m->mode);
break;
case umode_destroy:
e = find_mode (&m->name, 0);
if (!e)
fatal ("cannot find mode \"%s\"\n", m->name.string);
XRRDestroyMode (dpy, e->id);
break;
case umode_add:
o = find_output (&m->output);
if (!o)
fatal ("cannot find output \"%s\"\n", m->output.string);
e = find_mode (&m->name, 0);
if (!e)
fatal ("cannot find mode \"%s\"\n", m->name.string);
XRRAddOutputMode (dpy, o->output.xid, e->id);
break;
case umode_delete:
o = find_output (&m->output);
if (!o)
fatal ("cannot find output \"%s\"\n", m->output.string);
e = find_mode (&m->name, 0);
if (!e)
fatal ("cannot find mode \"%s\"\n", m->name.string);
XRRDeleteOutputMode (dpy, o->output.xid, e->id);
break;
}
}
if (!setit_1_2)
{
XSync (dpy, False);
exit (0);
}
    }
    if (has_1_2 && propit)
    {

        get_screen ();
get_crtcs();
get_outputs();

for (output = outputs; output; output = output->next)
{
output_prop_t *prop;

for (prop = output->props; prop; prop = prop->next)
{
Atom name = XInternAtom (dpy, prop->name, False);
Atom type;
int format;
unsigned char *data = NULL;
int nelements = 0;
int int_value;
unsigned long ulong_value;
unsigned char *prop_data;
int actual_format;
unsigned long nitems, bytes_after;
Atom actual_type;
XRRPropertyInfo *propinfo;

type = AnyPropertyType;
format=0;

if (XRRGetOutputProperty (dpy, output->output.xid, name,
0, 100, False, False,
AnyPropertyType,
&actual_type, &actual_format,
&nitems, &bytes_after, &prop_data) == Success &&

(propinfo = XRRQueryOutputProperty(dpy, output->output.xid,
name)))
{
type = actual_type;
format = actual_format;
}

if ((type == XA_INTEGER || type == AnyPropertyType) &&
(sscanf (prop->value, "%d", &int_value) == 1 ||
sscanf (prop->value, "0x%x", &int_value) == 1))
{
type = XA_INTEGER;
ulong_value = int_value;
data = (unsigned char *) &ulong_value;
nelements = 1;
format = 32;
}
else if ((type == XA_ATOM))
{
ulong_value = XInternAtom (dpy, prop->value, False);
data = (unsigned char *) &ulong_value;
nelements = 1;
format = 32;
}
else if ((type == XA_STRING || type == AnyPropertyType))
{
type = XA_STRING;
data = (unsigned char *) prop->value;
nelements = strlen (prop->value);
format = 8;
}
XRRChangeOutputProperty (dpy, output->output.xid,
name, type, format, PropModeReplace,
data, nelements);
}
}
if (!setit_1_2)
{
XSync (dpy, False);
exit (0);
}
    }
    if (setit_1_2)
    {
get_screen ();
get_crtcs ();
get_outputs ();
set_positions ();
set_screen_size ();

pick_crtcs ();

/*
* Assign outputs to crtcs
*/
set_crtcs ();

/*
* Mark changing crtcs
*/
mark_changing_crtcs ();

/*
* If an output was specified to track dpi, use it
*/
if (dpi_output)
{
output_t *output = find_output_by_name (dpi_output);
XRROutputInfo *output_info;
XRRModeInfo *mode_info;
if (!output)
fatal ("Cannot find output %s\n", dpi_output);
output_info = output->output_info;
mode_info = output->mode_info;
if (output_info && mode_info && output_info->mm_height)
{
/*
* When this output covers the whole screen, just use
* the known physical size
*/
if (fb_width == mode_info->width &&
fb_height == mode_info->height)
{
fb_width_mm = output_info->mm_width;
fb_height_mm = output_info->mm_height;
}
else
{
dpi = (25.4 * mode_info->height) / output_info->mm_height;
}
}
}

/*
* Compute physical screen size
*/
if (fb_width_mm == 0 || fb_height_mm == 0)
{
if (fb_width != DisplayWidth (dpy, screen) ||
fb_height != DisplayHeight (dpy, screen) || dpi != 0.0)
{
if (dpi <= 0)
dpi = (25.4 * DisplayHeight (dpy, screen)) / DisplayHeightMM(dpy, screen);

fb_width_mm = (25.4 * fb_width) / dpi;
fb_height_mm = (25.4 * fb_height) / dpi;
}
else
{
fb_width_mm = DisplayWidthMM (dpy, screen);
fb_height_mm = DisplayHeightMM (dpy, screen);
}
}

/*
* Now apply all of the changes
*/
apply ();

XSync (dpy, False);
exit (0);
    }
    if (query_1_2 || (query && has_1_2 && !query_1))
    {
output_t *output;
#define ModeShown 0x80000000

get_screen ();
get_crtcs ();
get_outputs ();

        printf ("<screen id=\"%d\" minimum_w=\"%d\" minimum_h=\"%d\" current_w=\"%d\" current_h=\"%d\" maximum_w=\"%d\" maximum_h=\"%d\">\n",
screen, minWidth, minHeight,
DisplayWidth (dpy, screen), DisplayHeight(dpy, screen),
maxWidth, maxHeight);

for (output = outputs; output; output = output->next)
{
XRROutputInfo *output_info = output->output_info;
XRRModeInfo *mode = output->mode_info;
Atom *props;
int j, k, nprop;
Bool *mode_shown;

printf (" <output name=\"%s\" connected=\"%s\"", output_info->name, connection[output_info->connection]);
if (mode)
{
printf (" w=\"%d\" h=\"%d\" x=\"%d\" y=\"%d\"",
mode_width (mode, output->rotation),
mode_height (mode, output->rotation),
output->x, output->y);
if (verbose)
printf (" id=\"%lx\"", mode->id);
if (output->rotation != RR_Rotate_0 || verbose)
{
printf (" rotation=\"%s\"",
rotation_name (output->rotation));
if (output->rotation & (RR_Reflect_X|RR_Reflect_Y))
printf (" reflection=\"%s\"", reflection_name (output->rotation));
}
}
/*
if (rotations != RR_Rotate_0 || verbose)
{
Bool first = True;
printf (" (");
for (i = 0; i < 4; i ++) {
if ((rotations >> i) & 1) {
if (!first) printf (" "); first = False;
printf("%s", direction[i]);
first = False;
}
}
if (rotations & RR_Reflect_X)
{
if (!first) printf (" "); first = False;
printf ("x axis");
}
if (rotations & RR_Reflect_Y)
{
if (!first) printf (" "); first = False;
printf ("y axis");
}
printf (")");
}
*/
if (mode)
{
printf (" wmm=\"%lu\" hmm=\"%lu\"",
output_info->mm_width, output_info->mm_height);
}
printf (">\n");

if (verbose)
{
printf ("\tIdentifier: 0x%lx\n", output->output.xid);
printf ("\tTimestamp: %lu\n", output_info->timestamp);
printf ("\tSubpixel: %s\n", order[output_info->subpixel_order]);
printf ("\tClones: ");
for (j = 0; j < output_info->nclone; j++)
{
output_t *cloned = find_output_by_xid (output_info->clones[j]);

if (cloned) printf (" %s", cloned->output.string);
}
printf ("\n");
if (output->crtc_info)
printf ("\tCRTC: %d\n", output->crtc_info->crtc.index);
printf ("\tCRTCs: ");
for (j = 0; j < output_info->ncrtc; j++)
{
crtc_t *crtc = find_crtc_by_xid (output_info->crtcs[j]);
if (crtc)
printf (" %d", crtc->crtc.index);
}
printf ("\n");
}
if (verbose || properties)
{
props = XRRListOutputProperties (dpy, output->output.xid,
&nprop);
for (j = 0; j < nprop; j++) {
unsigned char *prop;
int actual_format;
unsigned long nitems, bytes_after;
Atom actual_type;
XRRPropertyInfo *propinfo;
    
XRRGetOutputProperty (dpy, output->output.xid, props[j],
0, 100, False, False,
AnyPropertyType,
&actual_type, &actual_format,
&nitems, &bytes_after, &prop);

propinfo = XRRQueryOutputProperty(dpy, output->output.xid,
props[j]);

if (actual_type == XA_INTEGER && actual_format == 8) {
int k;
    
printf("\t%s:\n", XGetAtomName (dpy, props[j]));
for (k = 0; k < nitems; k++) {
if (k % 16 == 0)
printf ("\t\t");
printf("%02x", (unsigned char)prop[k]);
if (k % 16 == 15)
printf("\n");
}
} else if (actual_type == XA_INTEGER &&
actual_format == 32)
{
printf("\t%s: %d (0x%08x)",
XGetAtomName (dpy, props[j]),
*(int32_t*)prop, *(uint32_t*)prop);

  if (propinfo->range && propinfo->num_values > 0) {
printf(" range%s: ",
(propinfo->num_values == 2) ? "" : "s");

for (k = 0; k < propinfo->num_values / 2; k++)
printf(" (%ld,%ld)", propinfo->values[k * 2],
propinfo->values[k * 2 + 1]);
}

printf("\n");
} else if (actual_type == XA_ATOM &&
actual_format == 32)
{
printf("\t%s: %s",
XGetAtomName (dpy, props[j]),
XGetAtomName (dpy, *(Atom *)prop));

  if (!propinfo->range && propinfo->num_values > 0) {
printf("\n\t\tsupported:");

for (k = 0; k < propinfo->num_values; k++)
{
printf(" %-12.12s", XGetAtomName (dpy,
propinfo->values[k]));
if (k % 4 == 3 && k < propinfo->num_values - 1)
printf ("\n\t\t ");
}
}
printf("\n");

} else if (actual_format == 8) {
printf ("\t\t%s: %s%s\n", XGetAtomName (dpy, props[j]),
prop, bytes_after ? "..." : "");
} else {
printf ("\t\t%s: ????\n", XGetAtomName (dpy, props[j]));
}

free(propinfo);
}
printf(" </output>\n");
}

if (verbose)
{
for (j = 0; j < output_info->nmode; j++)
{
XRRModeInfo *mode = find_mode_by_xid (output_info->modes[j]);
int f;

printf (" %s (0x%lx) %6.1fMHz",
mode->name, mode->id,
(float)mode->dotClock / 1000000.0);
for (f = 0; mode_flags[f].flag; f++)
if (mode->modeFlags & mode_flags[f].flag)
printf (" %s", mode_flags[f].string);
printf ("\n");
printf (" h: width %4d start %4d end %4d total %4d skew %4d clock %6.1fKHz\n",
mode->width, mode->hSyncStart, mode->hSyncEnd,
mode->hTotal, mode->hSkew, mode_hsync (mode) / 1000);
printf (" v: height %4d start %4d end %4d total %4d clock %6.1fHz\n",
mode->height, mode->vSyncStart, mode->vSyncEnd, mode->vTotal,
mode_refresh (mode));
mode->modeFlags |= ModeShown;
}
}
else
{
mode_shown = calloc (output_info->nmode, sizeof (Bool));
if (!mode_shown) fatal ("out of memory\n");
for (j = 0; j < output_info->nmode; j++)
{
XRRModeInfo *jmode, *kmode;

if (mode_shown[j]) continue;
    
jmode = find_mode_by_xid (output_info->modes[j]);
for (k = j; k < output_info->nmode; k++)
{
if (mode_shown[k]) continue;
kmode = find_mode_by_xid (output_info->modes[k]);
if (strcmp (jmode->name, kmode->name) != 0) continue;
mode_shown[k] = True;
kmode->modeFlags |= ModeShown;
printf (" <mode id=\"0x%lx\" name=\"%s\" w=\"%d\" h=\"%d\" hz=\"%.5f\"", kmode->id, kmode->name, kmode->width, kmode->height, mode_refresh (kmode));
if (kmode == output->mode_info)
printf (" current=\"true\"");
else
printf (" current=\"false\"");
if (k < output_info->npreferred)
printf (" preferred=\"true\"");
else
printf (" preferred=\"false\"");
                        printf("/>\n");
}
}
free (mode_shown);
}

printf(" </output>\n");
}

/*
printf(" <unused>\n");
for (m = 0; m < res->nmode; m++)
{
XRRModeInfo *mode = &res->modes[m];

if (!(mode->modeFlags & ModeShown))
{
printf (" <modeline name=\"%s\" id=\"%x\" mhz=\"%.1f\"",
mode->name, mode->id,
(float)mode->dotClock / 1000000.0);
printf (" hwidth=\"%d\" hstart=\"%d\" hend=\"%d\" htotal=\"%d\" hskew=\"%d=\" hclock=\"%.1fKHz\"",
mode->width, mode->hSyncStart, mode->hSyncEnd,
mode->hTotal, mode->hSkew, mode_hsync (mode) / 1000);
printf (" vheight=\"%d\" vstart=\"%d\" vend=\"%d\" vtotal=\"%d\" vclock=\"%.1fHz\"/>\n",
mode->height, mode->vSyncStart, mode->vSyncEnd, mode->vTotal,
mode_refresh (mode));
}
}
printf(" </unused>\n");
*/
        printf("</screen>\n");
exit (0);
    }
#endif
    
    sc = XRRGetScreenInfo (dpy, root);

    if (sc == NULL)
exit (1);

    current_size = XRRConfigCurrentConfiguration (sc, &current_rotation);

    sizes = XRRConfigSizes(sc, &nsize);

    if (have_pixel_size) {
for (size = 0; size < nsize; size++)
{
if (sizes[size].width == width && sizes[size].height == height)
break;
}
if (size >= nsize) {
fprintf (stderr,
"Size %dx%d not found in available modes\n", width, height);
exit (1);
}
    }
    else if (size < 0)
size = current_size;
    else if (size >= nsize) {
fprintf (stderr,
"Size index %d is too large, there are only %d sizes\n",
size, nsize);
exit (1);
    }

    if (rot < 0)
    {
for (rot = 0; rot < 4; rot++)
if (1 << rot == (current_rotation & 0xf))
break;
    }

    current_rate = XRRConfigCurrentRate (sc);

    if (rate < 0)
    {
if (size == current_size)
rate = current_rate;
else
rate = 0;
    }
    else
    {
rates = XRRConfigRates (sc, size, &nrate);
for (i = 0; i < nrate; i++)
if (rate == rates[i])
break;
if (i == nrate) {
fprintf (stderr, "Rate %.1f Hz not available for this size\n", rate);
exit (1);
}
    }

    if (version) {
int major_version, minor_version;
XRRQueryVersion (dpy, &major_version, &minor_version);
printf("Server reports RandR version %d.%d\n",
major_version, minor_version);
    }

    if (query || query_1) {
printf(" SZ: Pixels Physical Refresh\n");
for (i = 0; i < nsize; i++) {
printf ("%c%-2d %5d x %-5d (%4dmm x%4dmm )",
i == current_size ? '*' : ' ',
i, sizes[i].width, sizes[i].height,
sizes[i].mwidth, sizes[i].mheight);
rates = XRRConfigRates (sc, i, &nrate);
if (nrate) printf (" ");
for (j = 0; j < nrate; j++)
printf ("%c%-4d",
i == current_size && rates[j] == current_rate ? '*' : ' ',
rates[j]);
printf ("\n");
}
    }

    rotations = XRRConfigRotations(sc, &current_rotation);

    rotation = 1 << rot ;
    if (query) {
     printf("Current rotation - %s\n",
rotation_name (current_rotation));

printf("Current reflection - %s\n",
reflection_name (current_rotation));

printf ("Rotations possible - ");
for (i = 0; i < 4; i ++) {
if ((rotations >> i) & 1) printf("%s ", direction[i]);
}
printf ("\n");

printf ("Reflections possible - ");
if (rotations & (RR_Reflect_X|RR_Reflect_Y))
{
if (rotations & RR_Reflect_X) printf ("X Axis ");
if (rotations & RR_Reflect_Y) printf ("Y Axis");
}
else
printf ("none");
printf ("\n");
    }

    if (verbose) {
printf("Setting size to %d, rotation to %s\n", size, direction[rot]);

printf ("Setting reflection on ");
if (reflection)
{
if (reflection & RR_Reflect_X) printf ("X Axis ");
if (reflection & RR_Reflect_Y) printf ("Y Axis");
}
else
printf ("neither axis");
printf ("\n");

if (reflection & RR_Reflect_X) printf("Setting reflection on X axis\n");

if (reflection & RR_Reflect_Y) printf("Setting reflection on Y axis\n");
    }

    /* we should test configureNotify on the root window */
    XSelectInput (dpy, root, StructureNotifyMask);

    if (setit && !dryrun) XRRSelectInput (dpy, root,
RRScreenChangeNotifyMask);
    if (setit && !dryrun) status = XRRSetScreenConfigAndRate (dpy, sc,
DefaultRootWindow (dpy),
(SizeID) size, (Rotation) (rotation | reflection), rate, CurrentTime);

    XRRQueryExtension(dpy, &event_base, &error_base);

    if (setit && !dryrun && status == RRSetConfigFailed) {
printf ("Failed to change the screen configuration!\n");
ret = 1;
    }

    if (verbose && setit && !dryrun && size != current_size) {
if (status == RRSetConfigSuccess)
{
Bool seen_screen = False;
while (!seen_screen) {
int spo;
XNextEvent(dpy, (XEvent *) &event);

printf ("Event received, type = %d\n", event.type);
/* update Xlib's knowledge of the event */
XRRUpdateConfiguration ((XEvent*)&event);
if (event.type == ConfigureNotify)
printf("Received ConfigureNotify Event!\n");

switch (event.type - event_base) {
case RRScreenChangeNotify:
sce = (XRRScreenChangeNotifyEvent *) &event;

printf("Got a screen change notify event!\n");
printf(" window = %d\n root = %d\n size_index = %d\n rotation %d\n",
(int) sce->window, (int) sce->root,
sce->size_index, sce->rotation);
printf(" timestamp = %ld, config_timestamp = %ld\n",
sce->timestamp, sce->config_timestamp);
printf(" Rotation = %x\n", sce->rotation);
printf(" %d X %d pixels, %d X %d mm\n",
sce->width, sce->height, sce->mwidth, sce->mheight);
printf("Display width %d, height %d\n",
DisplayWidth(dpy, screen), DisplayHeight(dpy, screen));
printf("Display widthmm %d, heightmm %d\n",
DisplayWidthMM(dpy, screen), DisplayHeightMM(dpy, screen));
spo = sce->subpixel_order;
if ((spo < 0) || (spo > 5))
printf ("Unknown subpixel order, value = %d\n", spo);
else printf ("new Subpixel rendering model is %s\n", order[spo]);
seen_screen = True;
break;
default:
if (event.type != ConfigureNotify)
printf("unknown event received, type = %d!\n", event.type);
}
}
}
    }
    XRRFreeScreenConfigInfo(sc);
    return(ret);
}
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