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DisplayRes.cpp
189 lines (152 loc) · 5.56 KB
/
DisplayRes.cpp
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#include "config.h"
#include "DisplayRes.h"
#include "mythcontext.h"
#ifdef USING_XRANDR
#include "DisplayResX.h"
#endif
#ifdef CONFIG_DARWIN
#include "DisplayResOSX.h"
#endif
DisplayRes * DisplayRes::instance = NULL;
DisplayRes * DisplayRes::GetDisplayRes(void)
{
if (!instance)
{
#ifdef USING_XRANDR
instance = new DisplayResX();
#elif defined(CONFIG_DARWIN)
instance = new DisplayResOSX();
#endif
}
return instance;
}
bool DisplayRes::Initialize(void)
{
int tW = 0, tH = 0, tW_mm = 0, tH_mm = 0;
double tAspect = 0.0;
short tRate = 0;
last.Init();
cur_mode = GUI;
// Initialize GUI mode
mode[GUI].Init();
tW = tH = 0;
gContext->GetResolutionSetting("GuiVidMode", tW, tH);
GetDisplaySize(tW_mm, tH_mm);
gContext->GetResolutionSetting("DisplaySize", tW_mm, tH_mm);
mode[GUI] = DisplayResScreen(tW, tH, tW_mm, tH_mm, -1.0, 0);
// Initialize default VIDEO mode
tW = tH = 0;
gContext->GetResolutionSetting("TVVidMode", tW, tH, tAspect, tRate);
mode[VIDEO] = DisplayResScreen(tW, tH, tW_mm, tH_mm, tAspect, tRate);
// Initialize video override mode
in_size_to_output_mode.clear();
for (int i = 0; true; ++i)
{
int iw = 0, ih = 0, ow = 0, oh = 0;
double iaspect = 0.0, oaspect = 0.0;
short irate = 0, orate = 0;
gContext->GetResolutionSetting("VidMode", iw, ih, iaspect, irate, i);
gContext->GetResolutionSetting("TVVidMode", ow, oh, oaspect, orate, i);
if (!(iw && ih && ow && oh))
break;
uint key = DisplayResScreen::CalcKey(iw, ih, irate);
DisplayResScreen scr(ow, oh, tW_mm, tH_mm, oaspect, orate);
in_size_to_output_mode[key] = scr;
}
// Find maximum resolution, needed for initializing X11 window
const DisplayResVector& screens = GetVideoModes();
for (uint i=0; i<screens.size(); ++i)
{
max_width = max(max_width, screens[i].Width());
max_height = max(max_height, screens[i].Height());
}
VERBOSE(VB_PLAYBACK, QString("max_width: %1 max_height: %2")
.arg(max_width).arg(max_height));
return true;
}
bool DisplayRes::SwitchToVideo(int iwidth, int iheight, short irate)
{
tmode next_mode = VIDEO; // default VIDEO mode
DisplayResScreen next = mode[next_mode];
// try to find video override mode
uint key = DisplayResScreen::CalcKey(iwidth, iheight, irate);
DisplayResMapCIt it = in_size_to_output_mode.find(key);
if (it != in_size_to_output_mode.end())
mode[next_mode = CUSTOM_VIDEO] = next = it->second;
// need to change video mode?
short target_rate = 0;
DisplayResScreen::FindBestMatch(GetVideoModes(), next, target_rate);
bool chg = !(next == last) || !(last.RefreshRate() == target_rate);
VERBOSE(VB_PLAYBACK, QString("Trying %1x%2 %3 Hz")
.arg(next.Width()).arg(next.Height()).arg(target_rate));
if (chg && !SwitchToVideoMode(next.Width(), next.Height(), target_rate))
{
VERBOSE(VB_IMPORTANT,
QString("SwitchToVideo: Video size %1 x %2: "
"xrandr failed for %3 x %4")
.arg(iwidth).arg(iheight).arg(next.Width()).arg(next.Height()));
return false;
}
cur_mode = next_mode;
last = next;
VERBOSE(VB_PLAYBACK,
QString("SwitchToVideo: Video size %1 x %2: \n"
" %7 displaying resolution %3 x %4, %5mm x %6mm")
.arg(iwidth).arg(iheight).arg(GetWidth()).arg(GetHeight())
.arg(GetPhysicalWidth()).arg(GetPhysicalHeight())
.arg((chg) ? "Switched to" : "Already"));
return chg;
}
bool DisplayRes::SwitchToGUI(tmode next_mode)
{
DisplayResScreen next = mode[next_mode];
// need to change video mode?
short target_rate = 0;
DisplayResScreen::FindBestMatch(GetVideoModes(), next, target_rate);
bool chg = !(next == last) || !(last.RefreshRate() == target_rate);
VERBOSE(VB_PLAYBACK, QString("Trying %1x%2 %3 Hz")
.arg(next.Width()).arg(next.Height()).arg(target_rate));
if (chg && !SwitchToVideoMode(next.Width(), next.Height(), target_rate))
{
VERBOSE(VB_IMPORTANT, QString("SwitchToGUI: xrandr failed for %1 x %2")
.arg(next.Width()).arg(next.Height()));
return false;
}
cur_mode = next_mode;
last = next;
VERBOSE(VB_PLAYBACK, QString("SwitchToGUI: Switched to %1 x %2")
.arg(GetWidth()).arg(GetHeight()));
return chg;
}
bool DisplayRes::SwitchToCustomGUI(int width, int height, short rate)
{
mode[CUSTOM_GUI] = DisplayResScreen(width, height, mode[GUI].Width_mm(),
mode[GUI].Height_mm(), -1.0, rate);
return SwitchToGUI(CUSTOM_GUI);
}
const vector<short> DisplayRes::GetRefreshRates(int width, int height) const {
short tr;
vector<short> empty;
const DisplayResScreen drs(width, height, 0, 0, -1.0, 0);
const DisplayResVector& drv = GetVideoModes();
int t = DisplayResScreen::FindBestMatch(drv, drs, tr);
if (t < 0)
return empty;
return drv[t].RefreshRates();
}
/** \fn GetVideoModes(void)
* \relates DisplayRes
* \brief Returns all video modes available.
*
* This is a conveniance class that instanciates a DisplayRes
* class if needed, and returns a copy of vector returned by
* DisplayRes::GetVideoModes(void).
*/
const vector<DisplayResScreen> GetVideoModes(void)
{
DisplayRes *display_res = DisplayRes::GetDisplayRes();
if (display_res)
return display_res->GetVideoModes();
vector<DisplayResScreen> empty;
return empty;
}