int GetNvidiaRates(t_screenrate& screenmap)
{
#ifdef USING_XRANDR
MythXDisplay *d = OpenMythXDisplay();
if (!d)
{
return -1;
}
Display *dpy;
bool ret;
int screen, display_devices, mask, major, minor, len, j;
char *str, *start;
int nDisplayDevice;
char *pMetaModes, *pModeLines[8], *tmp, *modeString;
char *modeLine, *modeName;
int MetaModeLen, ModeLineLen[8];
int thisMask;
int id;
int twinview = 0;
map<int, map<int,bool> > maprate;
memset(pModeLines, 0, sizeof(pModeLines));
memset(ModeLineLen, 0, sizeof(ModeLineLen));
/*
* Open a display connection, and make sure the NV-CONTROL X
* extension is present on the screen we want to use.
*/
dpy = d->GetDisplay();
screen = d->GetScreen();
if (!XNVCTRLIsNvScreen(dpy, screen))
{
LOG(VB_PLAYBACK, LOG_INFO,
QString("The NV-CONTROL X extension is not available on screen %1 "
"of '%2'.")
.arg(screen) .arg(XDisplayName(NULL)));
delete d;
return -1;
}
ret = XNVCTRLQueryVersion(dpy, &major, &minor);
if (ret != True)
{
LOG(VB_PLAYBACK, LOG_INFO,
QString("The NV-CONTROL X extension does not exist on '%1'.")
.arg(XDisplayName(NULL)));
delete d;
return -1;
}
ret = XNVCTRLQueryAttribute(dpy, screen, 0, NV_CTRL_DYNAMIC_TWINVIEW, &twinview);
if (!ret)
{
LOG(VB_PLAYBACK, LOG_ERR,
"Failed to query if Dynamic Twinview is enabled");
XCloseDisplay(dpy);
return -1;
}
if (!twinview)
{
LOG(VB_PLAYBACK, LOG_ERR, "Dynamic Twinview not enabled, ignoring");
delete d;
return 0;
}
/*
* query the connected display devices on this X screen and print
* basic information about each X screen
*/
ret = XNVCTRLQueryAttribute(dpy, screen, 0,
NV_CTRL_CONNECTED_DISPLAYS, &display_devices);
if (!ret)
{
LOG(VB_PLAYBACK, LOG_ERR,
"Failed to query the enabled Display Devices.");
delete d;
return -1;
}
/* first, we query the MetaModes on this X screen */
ret = XNVCTRLQueryBinaryData(dpy, screen, 0, // n/a
NV_CTRL_BINARY_DATA_METAMODES,
(unsigned char **)&pMetaModes, &MetaModeLen);
if (!ret)
{
LOG(VB_PLAYBACK, LOG_ERR,
"Failed to query the metamode on selected display device.");
delete d;
return -1;
}
/*
* then, we query the ModeLines for each display device on
* this X screen; we'll need these later
*/
nDisplayDevice = 0;
for (mask = 1; mask < (1 << 24); mask <<= 1)
{
if (!(display_devices & mask)) continue;
ret = XNVCTRLQueryBinaryData(dpy, screen, mask,
NV_CTRL_BINARY_DATA_MODELINES,
(unsigned char **)&str, &len);
if (!ret)
{
LOG(VB_PLAYBACK, LOG_ERR,
"Unknown error. Failed to query the enabled Display Devices.");
// Free Memory currently allocated
for (j=0; j < nDisplayDevice; ++j)
{
free(pModeLines[j]);
}
delete d;
return -1;
}
pModeLines[nDisplayDevice] = str;
ModeLineLen[nDisplayDevice] = len;
nDisplayDevice++;
}
/* now, parse each MetaMode */
str = start = pMetaModes;
for (j = 0; j < MetaModeLen - 1; ++j)
{
/*
* if we found the end of a line, treat the string from
* start to str[j] as a MetaMode
*/
if ((str[j] == '\0') && (str[j+1] != '\0'))
{
id = extract_id_string(start);
/*
* the MetaMode may be preceded with "token=value"
* pairs, separated by the main MetaMode with "::"; if
* "::" exists in the string, skip past it
*/
tmp = strstr(start, "::");
if (tmp)
{
tmp += 2;
}
else
{
tmp = start;
}
/* split the MetaMode string by comma */
char *strtok_state = NULL;
for (modeString = strtok_r(tmp, ",", &strtok_state);
modeString;
modeString = strtok_r(NULL, ",", &strtok_state))
{
/*
* retrieve the modeName and display device mask
* for this segment of the Metamode
*/
parse_mode_string(modeString, &modeName, &thisMask);
/* lookup the modeline that matches */
nDisplayDevice = 0;
if (thisMask)
{
for (mask = 1; mask < (1 << 24); mask <<= 1)
{
if (!(display_devices & mask)) continue;
if (thisMask & mask) break;
nDisplayDevice++;
}
}
modeLine = find_modeline(modeName,
pModeLines[nDisplayDevice],
ModeLineLen[nDisplayDevice]);
if (modeLine && !modeline_is_interlaced(modeLine))
{
int w, h, vfl, hfl, i, irate;
double dcl, r;
char *buf[256];
uint64_t key, key2;
// skip name
tmp = strchr(modeLine, '"');
tmp = strchr(tmp+1, '"') +1 ;
while (*tmp == ' ')
tmp++;
i = 0;
for (modeString = strtok_r(tmp, " ", &strtok_state);
modeString;
modeString = strtok_r(NULL, " ", &strtok_state))
{
buf[i++] = modeString;
}
w = strtol(buf[1], NULL, 10);
h = strtol(buf[5], NULL, 10);
vfl = strtol(buf[8], NULL, 10);
hfl = strtol(buf[4], NULL, 10);
h = strtol(buf[5], NULL, 10);
istringstream istr(buf[0]);
istr.imbue(locale("C"));
istr >> dcl;
r = (dcl * 1000000.0) / (vfl * hfl);
irate = (int) round(r * 1000.0);
key = DisplayResScreen::CalcKey(w, h, (double) id);
key2 = DisplayResScreen::CalcKey(w, h, 0.0);
// We need to eliminate duplicates, giving priority to the first entries found
if (maprate.find(key2) == maprate.end())
{
// First time we see this resolution, create a map for it
maprate[key2] = map<int, bool>();
}
if ((maprate[key2].find(irate) == maprate[key2].end()) &&
(screenmap.find(key) == screenmap.end()))
{
screenmap[key] = r;
maprate[key2][irate] = true;
}
}
free(modeName);
}
/* move to the next MetaMode */
start = &str[j+1];
}
int main(int argc, char *argv[])
{
Display *dpy;
Bool ret;
int screen, major, minor, len, i, j;
char *str, *start, *str0, *str1;
int *enabledDpyIds;
/*
* Open a display connection, and make sure the NV-CONTROL X
* extension is present on the screen we want to use.
*/
dpy = XOpenDisplay(NULL);
if (!dpy) {
fprintf(stderr, "Cannot open display '%s'.\n\n", XDisplayName(NULL));
return 1;
}
screen = GetNvXScreen(dpy);
ret = XNVCTRLQueryVersion(dpy, &major, &minor);
if (ret != True) {
fprintf(stderr, "The NV-CONTROL X extension does not exist "
"on '%s'.\n\n", XDisplayName(NULL));
return 1;
}
printf("\nUsing NV-CONTROL extension %d.%d on %s\n\n",
major, minor, XDisplayName(NULL));
/*
* query the enabled display devices on this X screen and print basic
* information about each X screen.
*/
ret = XNVCTRLQueryTargetBinaryData(dpy,
NV_CTRL_TARGET_TYPE_X_SCREEN,
screen,
0,
NV_CTRL_BINARY_DATA_DISPLAYS_ENABLED_ON_XSCREEN,
(unsigned char **) &enabledDpyIds,
&len);
if (!ret || (len < sizeof(enabledDpyIds[0]))) {
fprintf(stderr, "Failed to query the enabled Display Devices.\n\n");
return 1;
}
printf("Enabled Display Devices:\n");
for (i = 0; i < enabledDpyIds[0]; i++) {
int dpyId = enabledDpyIds[i+1];
print_display_id_and_name(dpy, dpyId, " ");
}
printf("\n");
/*
* perform the requested action, based on the specified
* commandline option
*/
if (argc <= 1) goto printHelp;
/*
* for each enabled display device on this X screen, query the list of
* modelines in the mode pool using NV_CTRL_BINARY_DATA_MODELINES, then
* print the results.
*/
if (strcmp(argv[1], "--print-modelines") == 0) {
for (i = 0; i < enabledDpyIds[0]; i++) {
int dpyId = enabledDpyIds[i+1];
ret = XNVCTRLQueryTargetBinaryData(dpy,
NV_CTRL_TARGET_TYPE_DISPLAY,
dpyId,
0,
NV_CTRL_BINARY_DATA_MODELINES,
(void *) &str, &len);
if (!ret) {
fprintf(stderr, "Failed to query ModeLines.\n\n");
return 1;
}
/*
* the returned data is in the form:
*
* "ModeLine 1\0ModeLine 2\0ModeLine 3\0Last ModeLine\0\0"
*
* so walk from one "\0" to the next to print each ModeLine.
*/
printf("Modelines for DPY-%d:\n", dpyId);
start = str;
for (j = 0; j < len; j++) {
if (str[j] == '\0') {
printf(" %s\n", start);
start = &str[j+1];
}
}
XFree(str);
}
}
/*
* for each enabled display device on this X screen, query the current
* modeline using NV_CTRL_STRING_CURRENT_MODELINE.
*/
else if (strcmp(argv[1], "--print-current-modeline") == 0) {
for (i = 0; i < enabledDpyIds[0]; i++) {
int dpyId = enabledDpyIds[i+1];
ret = XNVCTRLQueryTargetStringAttribute(dpy,
NV_CTRL_TARGET_TYPE_DISPLAY,
dpyId,
0,
NV_CTRL_STRING_CURRENT_MODELINE,
&str);
if (!ret) {
fprintf(stderr, "Failed to query current ModeLine.\n\n");
return 1;
}
printf("Current Modeline for DPY-%d:\n", dpyId);
printf(" %s\n\n", str);
XFree(str);
}
}
/*
* add the specified modeline to the mode pool for the specified
* display device, using NV_CTRL_STRING_ADD_MODELINE
*/
else if ((strcmp(argv[1], "--add-modeline") == 0) &&
argv[2] && argv[3]) {
int dpyId = strtol(argv[2], NULL, 0);
ret = XNVCTRLSetTargetStringAttribute(dpy,
NV_CTRL_TARGET_TYPE_DISPLAY,
dpyId,
0,
NV_CTRL_STRING_ADD_MODELINE,
argv[3]);
if (!ret) {
fprintf(stderr, "Failed to add the modeline \"%s\" to DPY-%d's "
"mode pool.\n\n", argv[3], dpyId);
return 1;
}
printf("Added modeline \"%s\" to DPY-%d's mode pool.\n\n",
argv[3], dpyId);
}
/*
* delete the specified modeline from the mode pool for the
* specified display device, using NV_CTRL_STRING_DELETE_MODELINE
*/
else if ((strcmp(argv[1], "--delete-modeline") == 0) &&
argv[2] && argv[3]) {
int dpyId = strtol(argv[2], NULL, 0);
ret = XNVCTRLSetTargetStringAttribute(dpy,
NV_CTRL_TARGET_TYPE_DISPLAY,
dpyId,
0,
NV_CTRL_STRING_DELETE_MODELINE,
argv[3]);
if (!ret) {
fprintf(stderr, "Failed to delete the mode \"%s\" from DPY-%d's "
"mode pool.\n\n", argv[3], dpyId);
return 1;
}
printf("Deleted modeline \"%s\" from DPY-%d's mode pool.\n\n",
argv[3], dpyId);
}
/*
* generate a GTF modeline using NV_CTRL_STRING_OPERATION_GTF_MODELINE
*/
else if ((strcmp(argv[1], "--generate-gtf-modeline") == 0) &&
argv[2] && argv[3] && argv[4]) {
char pGtfString[128];
char *pOut;
snprintf(pGtfString, 128, "width=%s, height=%s, refreshrate=%s",
argv[2], argv[3], argv[4]);
ret = XNVCTRLStringOperation(dpy,
NV_CTRL_TARGET_TYPE_X_SCREEN,
screen,
0,
NV_CTRL_STRING_OPERATION_GTF_MODELINE,
pGtfString,
&pOut);
if (!ret) {
fprintf(stderr, "Failed to generate GTF ModeLine from "
"\"%s\".\n\n", pGtfString);
return 1;
}
printf("GTF ModeLine from \"%s\": %s\n\n", pGtfString, pOut);
}
/*
* generate a CVT modeline using NV_CTRL_STRING_OPERATION_CVT_MODELINE
*/
else if ((strcmp(argv[1], "--generate-cvt-modeline") == 0) &&
argv[2] && argv[3] && argv[4] && argv[5]) {
char pCvtString[128];
char *pOut;
snprintf(pCvtString, 128, "width=%s, height=%s, refreshrate=%s, "
"reduced-blanking=%s",
argv[2], argv[3], argv[4], argv[5]);
ret = XNVCTRLStringOperation(dpy,
NV_CTRL_TARGET_TYPE_X_SCREEN,
screen,
0,
NV_CTRL_STRING_OPERATION_CVT_MODELINE,
pCvtString,
&pOut);
if (!ret) {
fprintf(stderr, "Failed to generate CVT ModeLine from "
"\"%s\".\n\n", pCvtString);
return 1;
}
printf("CVT ModeLine from \"%s\": %s\n\n", pCvtString, pOut);
}
/*
* query the MetaModes for the X screen, using
* NV_CTRL_BINARY_DATA_METAMODES.
*/
else if (strcmp(argv[1], "--print-metamodes") == 0) {
/* get list of metamodes */
ret = XNVCTRLQueryBinaryData(dpy, screen, 0, // n/a
NV_CTRL_BINARY_DATA_METAMODES,
(void *) &str, &len);
if (!ret) {
fprintf(stderr, "Failed to query MetaModes.\n\n");
return 1;
}
/*
* the returned data is in the form:
*
* "MetaMode 1\0MetaMode 2\0MetaMode 3\0Last MetaMode\0\0"
*
* so walk from one "\0" to the next to print each MetaMode.
*/
printf("MetaModes:\n");
start = str;
for (j = 0; j < len; j++) {
if (str[j] == '\0') {
printf(" %s\n", start);
start = &str[j+1];
}
}
XFree(str);
}
/*
* query the MetaModes for the X screen, using
* NV_CTRL_BINARY_DATA_METAMODES_VERSION_2.
*/
else if (strcmp(argv[1], "--print-metamodes-version2") == 0) {
/* get list of metamodes */
ret = XNVCTRLQueryBinaryData(dpy, screen, 0, // n/a
NV_CTRL_BINARY_DATA_METAMODES_VERSION_2,
(void *) &str, &len);
if (!ret) {
fprintf(stderr, "Failed to query MetaModes.\n\n");
return 1;
}
/*
* the returned data is in the form:
*
* "MetaMode 1\0MetaMode 2\0MetaMode 3\0Last MetaMode\0\0"
*
* so walk from one "\0" to the next to print each MetaMode.
*/
printf("MetaModes:\n");
start = str;
for (j = 0; j < len; j++) {
if (str[j] == '\0') {
printf(" %s\n", start);
start = &str[j+1];
}
}
XFree(str);
}
/*
* query the currently in use MetaMode. Note that an alternative
* way to accomplish this is to use XRandR to query the current
* mode's refresh rate, and then match the refresh rate to the id
* reported in the returned NV_CTRL_BINARY_DATA_METAMODES data.
*/
else if (strcmp(argv[1], "--print-current-metamode") == 0) {
ret = XNVCTRLQueryStringAttribute(dpy, screen, 0,
NV_CTRL_STRING_CURRENT_METAMODE,
&str);
if (!ret) {
fprintf(stderr, "Failed to query the current MetaMode.\n\n");
return 1;
}
printf("current metamode: \"%s\"\n\n", str);
XFree(str);
}
/*
* query the currently in use MetaMode. Note that an alternative
* way to accomplish this is to use XRandR to query the current
* mode's refresh rate, and then match the refresh rate to the id
* reported in the returned NV_CTRL_BINARY_DATA_METAMODES_VERSION_2 data.
*/
else if (strcmp(argv[1], "--print-current-metamode-version2") == 0) {
ret = XNVCTRLQueryStringAttribute(dpy, screen, 0,
NV_CTRL_STRING_CURRENT_METAMODE_VERSION_2,
&str);
if (!ret) {
fprintf(stderr, "Failed to query the current MetaMode.\n\n");
return 1;
}
printf("current metamode: \"%s\"\n\n", str);
XFree(str);
}
/*
* add the given MetaMode to X screen's list of MetaModes, using
* NV_CTRL_STRING_OPERATION_ADD_METAMODE; example MetaMode string:
*
* "nvidia-auto-select, nvidia-auto-select"
*
* The output string will contain "id=#" which indicates the
* unique identifier for this MetaMode. You can then use XRandR
* to switch to this mode by matching the identifier with the
* refresh rate reported via XRandR.
*
* For example:
*
* $ ./nv-control-dpy --add-metamode \
* "nvidia-auto-select, nvidia-auto-select"
*
* Using NV-CONTROL extension 1.12 on :0
* Enabled Display Devices:
* DPY-0 : EIZO F931
* DPY-1 : ViewSonic P815-4
*
* Added MetaMode "nvidia-auto-select, nvidia-auto-select";
* pOut: "id=52"
*
* $ xrandr -q
* SZ: Pixels Physical Refresh
* 0 3200 x 1200 ( 821mm x 302mm ) 51 52
* *1 1600 x 600 ( 821mm x 302mm ) *50
* Current rotation - normal
* Current reflection - none
* Rotations possible - normal
* Reflections possible - none
*
* $ xrandr -s 0 -r 52
*/
else if ((strcmp(argv[1], "--add-metamode") == 0) && (argv[2])) {
char *pOut;
ret = XNVCTRLStringOperation(dpy,
NV_CTRL_TARGET_TYPE_X_SCREEN,
screen,
0,
NV_CTRL_STRING_OPERATION_ADD_METAMODE,
argv[2],
&pOut);
if (!ret) {
fprintf(stderr, "Failed to add the MetaMode \"%s\".\n\n",
argv[2]);
return 1;
}
printf("Added MetaMode \"%s\"; pOut: \"%s\"\n\n", argv[2], pOut);
XFree(pOut);
}
/*
* delete the given MetaMode from the X screen's list of
* MetaModes, using NV_CTRL_STRING_DELETE_METAMODE
*/
else if ((strcmp(argv[1], "--delete-metamode") == 0) && (argv[1])) {
ret = XNVCTRLSetStringAttribute(dpy,
screen,
0,
NV_CTRL_STRING_DELETE_METAMODE,
argv[2]);
if (!ret) {
fprintf(stderr, "Failed to delete the MetaMode.\n\n");
return 1;
}
printf("Deleted MetaMode \"%s\".\n\n", argv[2]);
}
/*
* query the valid frequency ranges for each display device, using
* NV_CTRL_STRING_VALID_HORIZ_SYNC_RANGES and
* NV_CTRL_STRING_VALID_VERT_REFRESH_RANGES
*/
else if (strcmp(argv[1], "--get-valid-freq-ranges") == 0) {
for (i = 0; i < enabledDpyIds[0]; i++) {
int dpyId = enabledDpyIds[i+1];
ret = XNVCTRLQueryTargetStringAttribute
(dpy, NV_CTRL_TARGET_TYPE_DISPLAY, dpyId, 0,
NV_CTRL_STRING_VALID_HORIZ_SYNC_RANGES,
&str0);
if (!ret) {
fprintf(stderr, "Failed to query HorizSync for DPY-%d.\n\n",
dpyId);
return 1;
}
ret = XNVCTRLQueryTargetStringAttribute
(dpy, NV_CTRL_TARGET_TYPE_DISPLAY, dpyId, 0,
NV_CTRL_STRING_VALID_VERT_REFRESH_RANGES,
&str1);
if (!ret) {
fprintf(stderr, "Failed to query VertRefresh for DPY-%d.\n\n",
dpyId);
XFree(str0);
return 1;
}
printf("frequency information for DPY-%d:\n", dpyId);
printf(" HorizSync : \"%s\"\n", str0);
printf(" VertRefresh : \"%s\"\n\n", str1);
XFree(str0);
XFree(str1);
}
}
/*
* attempt to build the modepool for each display device; this
* will fail for any display device that already has a modepool
*/
else if (strcmp(argv[1], "--build-modepool") == 0) {
for (i = 0; i < enabledDpyIds[0]; i++) {
int dpyId = enabledDpyIds[i+1];
ret = XNVCTRLStringOperation
(dpy,
NV_CTRL_TARGET_TYPE_DISPLAY,
dpyId,
0,
NV_CTRL_STRING_OPERATION_BUILD_MODEPOOL,
argv[2],
&str0);
if (!ret) {
fprintf(stderr, "Failed to build modepool for DPY-%d (it most "
"likely already has a modepool).\n\n", dpyId);
} else {
printf("Built modepool for DPY-%d.\n\n", dpyId);
}
}
}
/*
* query the assigned display devices on this X screen; these are the
* display devices that are available to the X screen for use by MetaModes.
*/
else if (strcmp(argv[1], "--get-assigned-dpys") == 0) {
int *pData = NULL;
int len;
ret = XNVCTRLQueryTargetBinaryData(dpy,
NV_CTRL_TARGET_TYPE_X_SCREEN,
screen,
0,
NV_CTRL_BINARY_DATA_DISPLAYS_ASSIGNED_TO_XSCREEN,
(unsigned char **) &pData,
&len);
if (!ret || (len < sizeof(pData[0]))) {
fprintf(stderr, "failed to query the assigned display "
"devices.\n\n");
return 1;
}
printf("Assigned display devices:\n");
for (i = 0; i < pData[0]; i++) {
int dpyId = pData[i+1];
printf(" DPY-%d\n", dpyId);
}
printf("\n");
XFree(pData);
}
/*
* query information about the GPUs in the system
*/
else if (strcmp(argv[1], "--query-gpus") == 0) {
int num_gpus, num_screens, i;
int *pData;
printf("GPU Information:\n");
/* Get the number of gpus in the system */
ret = XNVCTRLQueryTargetCount(dpy, NV_CTRL_TARGET_TYPE_GPU,
&num_gpus);
if (!ret) {
fprintf(stderr, "Failed to query number of gpus.\n\n");
return 1;
}
printf(" number of GPUs: %d\n", num_gpus);
/* List the X screen number of all X screens driven by each gpu */
for (i = 0; i < num_gpus; i++) {
ret = XNVCTRLQueryTargetBinaryData
(dpy,
NV_CTRL_TARGET_TYPE_GPU,
i, // target_id
0,
NV_CTRL_BINARY_DATA_XSCREENS_USING_GPU,
(unsigned char **) &pData,
&len);
if (!ret || (len < sizeof(pData[0]))) {
fprintf(stderr, "Failed to query list of X Screens\n");
return 1;
}
printf(" number of X screens using GPU %d: %d\n", i, pData[0]);
/* List X Screen number of all X Screens driven by this GPU. */
printf(" Indices of X screens using GPU %d: ", i);
for (j = 1; j <= pData[0]; j++) {
printf(" %d", pData[j]);
}
printf("\n");
XFree(pData);
}
/* Get the number of X Screens in the system
*
* NOTE: If Xinerama is enabled, ScreenCount(dpy) will return 1,
* where as querying the screen count information from
* NV-CONTROL will return the number of underlying X Screens.
*/
ret = XNVCTRLQueryTargetCount(dpy, NV_CTRL_TARGET_TYPE_X_SCREEN,
&num_screens);
if (!ret) {
fprintf(stderr, "Failed to query number of X Screens\n\n");
return 1;
}
printf("\n");
printf(" number of X screens (ScreenCount): %d\n",
ScreenCount(dpy));
printf(" number of X screens (NV-CONTROL): %d\n\n",
num_screens);
for (i = 0; i < num_screens; i++) {
ret = XNVCTRLQueryTargetBinaryData
(dpy,
NV_CTRL_TARGET_TYPE_X_SCREEN,
i, // target_id
0,
NV_CTRL_BINARY_DATA_GPUS_USED_BY_XSCREEN,
(unsigned char **) &pData,
&len);
if (!ret || (len < sizeof(pData[0]))) {
fprintf(stderr, "Failed to query list of gpus\n\n");
return 1;
}
printf(" number of GPUs used by X screen %d: %d\n", i,
pData[0]);
/* List gpu number of all gpus driven by this X screen */
printf(" Indices of GPUs used by X screen %d: ", i);
for (j = 1; j <= pData[0]; j++) {
printf(" %d", pData[j]);
}
printf("\n");
XFree(pData);
}
printf("\n");
}
/*
* probe for any newly connected display devices
*/
else if (strcmp(argv[1], "--probe-dpys") == 0) {
int num_gpus, i;
printf("Display Device Probed Information:\n\n");
/* Get the number of gpus in the system */
ret = XNVCTRLQueryTargetCount(dpy, NV_CTRL_TARGET_TYPE_GPU,
&num_gpus);
if (!ret) {
fprintf(stderr, "Failed to query number of gpus\n\n");
return 1;
}
printf(" number of GPUs: %d\n", num_gpus);
/* Probe and list the Display devices */
for (i = 0; i < num_gpus; i++) {
int deprecated;
int *pData;
/* Get the gpu name */
ret = XNVCTRLQueryTargetStringAttribute
(dpy, NV_CTRL_TARGET_TYPE_GPU, i, 0,
NV_CTRL_STRING_PRODUCT_NAME, &str);
if (!ret) {
fprintf(stderr, "Failed to query gpu name\n\n");
return 1;
}
/* Probe the GPU for new/old display devices */
ret = XNVCTRLQueryTargetAttribute(dpy,
NV_CTRL_TARGET_TYPE_GPU, i,
0,
NV_CTRL_PROBE_DISPLAYS,
&deprecated);
if (!ret) {
fprintf(stderr, "Failed to probe the enabled Display "
"Devices on GPU-%d (%s).\n\n", i, str);
return 1;
}
printf(" display devices on GPU-%d (%s):\n", i, str);
XFree(str);
/* Report results */
ret = XNVCTRLQueryTargetBinaryData(dpy,
NV_CTRL_TARGET_TYPE_GPU, i,
0,
NV_CTRL_BINARY_DATA_DISPLAYS_CONNECTED_TO_GPU,
(unsigned char **) &pData,
&len);
if (!ret || (len < sizeof(pData[0]))) {
fprintf(stderr, "Failed to query the connected Display Devices.\n\n");
return 1;
}
for (j = 0; j < pData[0]; j++) {
int dpyId = pData[j+1];
print_display_id_and_name(dpy, dpyId, " ");
}
printf("\n");
}
printf("\n");
}
/*
* query the nvidiaXineramaInfoOrder
*/
else if (strcmp(argv[1], "--query-nvidia-xinerama-info-order") == 0) {
ret = XNVCTRLQueryTargetStringAttribute
(dpy, NV_CTRL_TARGET_TYPE_X_SCREEN, screen, 0,
NV_CTRL_STRING_NVIDIA_XINERAMA_INFO_ORDER, &str);
if (!ret) {
fprintf(stderr, "Failed to query nvidiaXineramaInfoOrder.\n\n");
return 1;
}
printf("nvidiaXineramaInfoOrder: %s\n\n", str);
}
/*
* assign the nvidiaXineramaInfoOrder
*/
else if ((strcmp(argv[1], "--assign-nvidia-xinerama-info-order")== 0)
&& argv[2]) {
ret = XNVCTRLSetStringAttribute
(dpy,
screen,
0,
NV_CTRL_STRING_NVIDIA_XINERAMA_INFO_ORDER,
argv[2]);
if (!ret) {
fprintf(stderr, "Failed to assign "
"nvidiaXineramaInfoOrder = \"%s\".\n\n", argv[2]);
return 1;
}
printf("assigned nvidiaXineramaInfoOrder: \"%s\"\n\n",
argv[2]);
}
/*
* use NV_CTRL_MAX_SCREEN_WIDTH and NV_CTRL_MAX_SCREEN_HEIGHT to
* query the maximum screen dimensions on each GPU in the system
*/
else if (strcmp(argv[1], "--max-screen-size") == 0) {
int num_gpus, i, width, height;
/* Get the number of gpus in the system */
ret = XNVCTRLQueryTargetCount(dpy, NV_CTRL_TARGET_TYPE_GPU,
&num_gpus);
if (!ret) {
fprintf(stderr, "Failed to query number of gpus.\n\n");
return 1;
}
for (i = 0; i < num_gpus; i++) {
ret = XNVCTRLQueryTargetAttribute(dpy,
NV_CTRL_TARGET_TYPE_GPU,
i,
0,
NV_CTRL_MAX_SCREEN_WIDTH,
&width);
if (!ret) {
fprintf(stderr, "Failed to query the maximum screen "
"width on GPU-%d\n\n", i);
return 1;
}
ret = XNVCTRLQueryTargetAttribute(dpy,
NV_CTRL_TARGET_TYPE_GPU,
i,
0,
NV_CTRL_MAX_SCREEN_HEIGHT,
&height);
if (!ret) {
fprintf(stderr, "Failed to query the maximum screen "
"height on GPU-%d.\n\n", i);
return 1;
}
printf("GPU-%d: maximum X screen size: %d x %d.\n\n",
i, width, height);
}
}
/*
* demonstrate how to use NV-CONTROL to query what modelines are
* used by the MetaModes of the X screen: we first query all the
* MetaModes, parse out the display device names and mode names,
* and then lookup the modelines associated with those mode names
* on those display devices
*
* this could be implemented much more efficiently, but
* demonstrates the general idea
*/
else if (strcmp(argv[1], "--print-used-modelines") == 0) {
char *pMetaModes, *pModeLines[8], *tmp, *modeString;
char *modeLine, *modeName, *noWhiteSpace;
int MetaModeLen, ModeLineLen[8], ModeLineDpyId[8];
int dpyId;
/* first, we query the MetaModes on this X screen */
XNVCTRLQueryBinaryData(dpy, screen, 0,
NV_CTRL_BINARY_DATA_METAMODES_VERSION_2,
(void *) &pMetaModes, &MetaModeLen);
/*
* then, we query the ModeLines for each display device on
* this X screen; we'll need these later
*/
for (i = 0; i < enabledDpyIds[0]; i++) {
dpyId = enabledDpyIds[i+1];
XNVCTRLQueryTargetBinaryData(dpy, NV_CTRL_TARGET_TYPE_DISPLAY,
dpyId,
0,
NV_CTRL_BINARY_DATA_MODELINES,
(void *) &str, &len);
pModeLines[i] = str;
ModeLineLen[i] = len;
ModeLineDpyId[i] = dpyId;
}
/* now, parse each MetaMode */
str = start = pMetaModes;
for (j = 0; j < MetaModeLen - 1; j++) {
/*
* if we found the end of a line, treat the string from
* start to str[j] as a MetaMode
*/
if ((str[j] == '\0') && (str[j+1] != '\0')) {
printf("MetaMode: %s\n", start);
/*
* remove any white space from the string to make
* parsing easier
*/
noWhiteSpace = remove_whitespace(start);
/*
* the MetaMode may be preceded with "token=value"
* pairs, separated by the main MetaMode with "::"; if
* "::" exists in the string, skip past it
*/
tmp = strstr(noWhiteSpace, "::");
if (tmp) {
tmp += 2;
} else {
tmp = noWhiteSpace;
}
/* Parse each mode from the metamode */
for (modeString = mode_strtok(tmp);
modeString;
modeString = mode_strtok(NULL)) {
/*
* retrieve the modeName and display device id
* for this segment of the Metamode
*/
if (!parse_mode_string(modeString, &modeName, &dpyId)) {
fprintf(stderr, " Failed to parse mode string '%s'."
"\n\n",
modeString);
continue;
}
/* lookup the modeline that matches */
for (i = 0; i < enabledDpyIds[0]; i++) {
if (ModeLineDpyId[i] == dpyId) {
break;
}
}
if ( i >= enabledDpyIds[0] ) {
fprintf(stderr, " Failed to find modelines for "
"DPY-%d.\n\n",
dpyId);
continue;
}
modeLine = find_modeline(modeName,
pModeLines[i],
ModeLineLen[i]);
printf(" DPY-%d: %s\n", dpyId, modeLine);
}
printf("\n");
free(noWhiteSpace);
/* move to the next MetaMode */
start = &str[j+1];
}
}
}
/* Display all names each display device goes by
*/
else if (strcmp(argv[1], "--print-display-names") == 0) {
int *pData;
int len, i;
printf("Display Device Information:\n");
ret = XNVCTRLQueryTargetBinaryData(dpy,
NV_CTRL_TARGET_TYPE_GPU,
0,
0,
NV_CTRL_BINARY_DATA_DISPLAY_TARGETS,
(unsigned char **) &pData,
&len);
if (!ret || (len < sizeof(pData[0]))) {
fprintf(stderr, "Failed to query number of display devices.\n\n");
return 1;
}
printf(" number of display devices: %d\n", pData[0]);
for (i = 1; i <= pData[0]; i++) {
printf("\n Display Device: %d\n", pData[i]);
print_display_name(dpy, pData[i],
NV_CTRL_STRING_DISPLAY_NAME_TYPE_BASENAME,
"Type Basename");
print_display_name(dpy, pData[i],
NV_CTRL_STRING_DISPLAY_NAME_TYPE_ID,
"Type ID");
print_display_name(dpy, pData[i],
NV_CTRL_STRING_DISPLAY_NAME_DP_GUID,
"DP GUID");
print_display_name(dpy, pData[i],
NV_CTRL_STRING_DISPLAY_NAME_EDID_HASH,
"EDID HASH");
print_display_name(dpy, pData[i],
NV_CTRL_STRING_DISPLAY_NAME_TARGET_INDEX,
"Target Index");
print_display_name(dpy, pData[i],
NV_CTRL_STRING_DISPLAY_NAME_RANDR,
"RANDR");
}
}
/*
* print help information
*/
else {
printHelp:
printf("\nnv-control-dpy [options]:\n\n");
printf(" ModeLine options:\n\n");
printf(" --print-modelines: print the modelines in the mode pool "
"for each Display Device.\n\n");
printf(" --print-current-modeline: print the current modeline "
"for each Display Device.\n\n");
printf(" --add-modeline [dpy id] [modeline]: "
"add new modeline.\n\n");
printf(" --delete-modeline [dpy id] [modename]: "
"delete modeline with modename.\n\n");
printf(" --generate-gtf-modeline [width] [height] [refreshrate]:"
" use the GTF formula"
" to generate a modeline for the specified parameters.\n\n");
printf(" --generate-cvt-modeline [width] [height] [refreshrate]"
" [reduced-blanking]: use the CVT formula"
" to generate a modeline for the specified parameters.\n\n");
printf(" MetaMode options:\n\n");
printf(" --print-metamodes: print the current MetaModes for the "
"X screen\n\n");
printf(" --print-metamodes-version2: print the current MetaModes for "
"the X screen with extended information\n\n");
printf(" --add-metamode [metamode]: add the specified "
"MetaMode to the X screen's list of MetaModes.\n\n");
printf(" --delete-metamode [metamode]: delete the specified MetaMode "
"from the X screen's list of MetaModes.\n\n");
printf(" --print-current-metamode: print the current MetaMode.\n\n");
printf(" --print-current-metamode-version2: print the current "
"MetaMode with extended information.\n\n");
printf(" Misc options:\n\n");
printf(" --get-valid-freq-ranges: query the valid frequency "
"information for each display device.\n\n");
printf(" --build-modepool: build a modepool for any display device "
"that does not already have one.\n\n");
printf(" --get-assigned-dpys: query the assigned display device for "
"this X screen\n\n");
printf(" --query-gpus: print GPU information and relationship to "
"X screens.\n\n");
printf(" --probe-dpys: probe GPUs for new display devices\n\n");
printf(" --query-nvidia-xinerama-info-order: query the "
"nvidiaXineramaInfoOrder.\n\n");
printf(" --assign-nvidia-xinerama-info-order [order]: assign the "
"nvidiaXineramaInfoOrder.\n\n");
printf(" --max-screen-size: query the maximum screen size "
"on all GPUs in the system\n\n");
printf(" --print-used-modelines: print the modeline for each display "
"device for each MetaMode on the X screen.\n\n");
printf(" --print-display-names: print all the names associated with "
"each display device on the server\n\n");
}
return 0;
}
