mirror of
https://github.com/moonlight-stream/moonlight-qt
synced 2024-09-20 22:21:57 +00:00
127 lines
4.1 KiB
C++
127 lines
4.1 KiB
C++
#include "streamutils.h"
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#include <Qt>
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#ifdef Q_OS_DARWIN
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#include <ApplicationServices/ApplicationServices.h>
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#endif
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void StreamUtils::scaleSourceToDestinationSurface(SDL_Rect* src, SDL_Rect* dst)
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{
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int dstH = dst->w * src->h / src->w;
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int dstW = dst->h * src->w / src->h;
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if (dstH > dst->h) {
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dst->y = 0;
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dst->x = (dst->w - dstW) / 2;
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dst->w = dstW;
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SDL_assert(dst->w * src->h / src->w <= dst->h);
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}
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else {
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dst->x = 0;
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dst->y = (dst->h - dstH) / 2;
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dst->h = dstH;
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SDL_assert(dst->h * src->w / src->h <= dst->w);
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}
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}
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int StreamUtils::getDisplayRefreshRate(SDL_Window* window)
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{
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int displayIndex = SDL_GetWindowDisplayIndex(window);
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if (displayIndex < 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
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"Failed to get current display: %s",
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SDL_GetError());
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// Assume display 0 if it fails
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displayIndex = 0;
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}
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SDL_DisplayMode mode;
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if ((SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN) {
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// Use the window display mode for full-screen exclusive mode
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if (SDL_GetWindowDisplayMode(window, &mode) != 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
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"SDL_GetWindowDisplayMode() failed: %s",
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SDL_GetError());
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// Assume 60 Hz
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return 60;
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}
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}
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else {
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// Use the current display mode for windowed and borderless
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if (SDL_GetCurrentDisplayMode(displayIndex, &mode) != 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
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"SDL_GetCurrentDisplayMode() failed: %s",
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SDL_GetError());
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// Assume 60 Hz
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return 60;
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}
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}
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// May be zero if undefined
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if (mode.refresh_rate == 0) {
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SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
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"Refresh rate unknown; assuming 60 Hz");
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mode.refresh_rate = 60;
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}
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return mode.refresh_rate;
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}
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bool StreamUtils::getRealDesktopMode(int displayIndex, SDL_DisplayMode* mode)
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{
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#ifdef Q_OS_DARWIN
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#define MAX_DISPLAYS 16
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CGDirectDisplayID displayIds[MAX_DISPLAYS];
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uint32_t displayCount = 0;
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CGGetActiveDisplayList(MAX_DISPLAYS, displayIds, &displayCount);
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if (displayIndex >= displayCount) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
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"Too many displays: %d vs %d",
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displayIndex, displayCount);
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return false;
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}
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SDL_zerop(mode);
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// Retina displays have non-native resolutions both below and above (!) their
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// native resolution, so it's impossible for us to figure out what's actually
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// native on macOS using the SDL API alone. We'll talk to CoreGraphics to
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// find the correct resolution and match it in our SDL list.
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CFArrayRef modeList = CGDisplayCopyAllDisplayModes(displayIds[displayIndex], nullptr);
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CFIndex count = CFArrayGetCount(modeList);
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for (CFIndex i = 0; i < count; i++) {
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auto cgMode = (CGDisplayModeRef)(CFArrayGetValueAtIndex(modeList, i));
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if ((CGDisplayModeGetIOFlags(cgMode) & kDisplayModeNativeFlag) != 0) {
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mode->w = static_cast<int>(CGDisplayModeGetWidth(cgMode));
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mode->h = static_cast<int>(CGDisplayModeGetHeight(cgMode));
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break;
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}
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}
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CFRelease(modeList);
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// Now find the SDL mode that matches the CG native mode
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for (int i = 0; i < SDL_GetNumDisplayModes(displayIndex); i++) {
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SDL_DisplayMode thisMode;
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if (SDL_GetDisplayMode(displayIndex, i, &thisMode) == 0) {
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if (thisMode.w == mode->w && thisMode.h == mode->h &&
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thisMode.refresh_rate >= mode->refresh_rate) {
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*mode = thisMode;
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break;
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}
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}
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}
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#else
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if (SDL_GetDesktopDisplayMode(displayIndex, mode) != 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
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"SDL_GetDesktopDisplayMode() failed: %s",
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SDL_GetError());
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return false;
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}
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#endif
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return true;
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}
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