int CheckNVOpenGLSyncToVBlank(void)
{
MythXDisplay *d = OpenMythXDisplay();
if (!d)
return -1;
Display *dpy = d->GetDisplay();
int screen = d->GetScreen();
if (!XNVCTRLIsNvScreen(dpy, screen))
{
delete d;
return -1;
}
int major, minor;
if (!XNVCTRLQueryVersion(dpy, &major, &minor))
return -1;
int sync = NV_CTRL_SYNC_TO_VBLANK_OFF;
if (!XNVCTRLQueryAttribute(dpy, screen, 0, NV_CTRL_SYNC_TO_VBLANK, &sync))
{
delete d;
return -1;
}
if (!sync)
{
LOG(VB_GENERAL, LOG_WARNING, LOC + "OpenGL Sync to VBlank is disabled.");
LOG(VB_GENERAL, LOG_WARNING, LOC + "For best results enable this in NVidia settings or try running:");
LOG(VB_GENERAL, LOG_WARNING, LOC + "nvidia-settings -a \"SyncToVBlank=1\"");
}
if (!sync && getenv("__GL_SYNC_TO_VBLANK"))
{
LOG(VB_GENERAL, LOG_INFO, LOC +
"OpenGL Sync to VBlank enabled via __GL_SYNC_TO_VBLANK.");
sync = 1;
}
else if (!sync)
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"Alternatively try setting the '__GL_SYNC_TO_VBLANK' environment variable.");
}
return sync;
}
const DisplayResVector& DisplayResX::GetVideoModes(void) const
{
if (!m_videoModes.empty())
return m_videoModes;
MythXDisplay *display = NULL;
XRRScreenConfiguration *cfg = GetScreenConfig(display);
if (!cfg)
return m_videoModes;
int num_sizes, num_rates;
XRRScreenSize *sizes = NULL;
sizes = XRRConfigSizes(cfg, &num_sizes);
for (int i = 0; i < num_sizes; ++i)
{
short *rates = NULL;
rates = XRRRates(display->GetDisplay(), display->GetScreen(),
i, &num_rates);
DisplayResScreen scr(sizes[i].width, sizes[i].height,
sizes[i].mwidth, sizes[i].mheight,
rates, num_rates);
m_videoModes.push_back(scr);
}
t_screenrate screenmap;
int nvidiarate = GetNvidiaRates(screenmap);
if (nvidiarate > 0)
{
// Update existing DisplayResScreen vector, and update it with
// new frequencies
for (uint i = 0; i < m_videoModes.size(); i++)
{
DisplayResScreen scr = m_videoModes[i];
int w = scr.Width();
int h = scr.Height();
int mw = scr.Width_mm();
int mh = scr.Height_mm();
std::vector<double> newrates;
std::map<double, short> realRates;
const std::vector<double>& rates = scr.RefreshRates();
bool found = false;
for (std::vector<double>::const_iterator it = rates.begin();
it != rates.end(); ++it)
{
uint64_t key = DisplayResScreen::CalcKey(w, h, *it);
if (screenmap.find(key) != screenmap.end())
{
// Rate is defined in NV-CONTROL extension, use it
newrates.push_back(screenmap[key]);
realRates[screenmap[key]] = (int) round(*it);
found = true;
#if 0
LOG(VB_PLAYBACK, LOG_INFO,
QString("CustomRate Found, set %1x%2@%3 as %4Hz")
.arg(w) .arg(h) .arg(*it) .arg(screenmap[key]));
#endif
}
}
if (found)
{
m_videoModes.erase(m_videoModes.begin() + i);
std::sort(newrates.begin(), newrates.end());
m_videoModes.insert(m_videoModes.begin() + i,
DisplayResScreen(w, h, mw, mh, newrates,
realRates));
}
}
}
m_videoModesUnsorted = m_videoModes;
std::sort(m_videoModes.begin(), m_videoModes.end());
XRRFreeScreenConfigInfo(cfg);
delete display;
return m_videoModes;
}
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];
}
