SDLVideoSystem.cc

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#include "SDLVideoSystem.hh"
#include "SDLRasterizer.hh"
#include "VisibleSurface.hh"
#include "PostProcessor.hh"
#include "V9990SDLRasterizer.hh"
#include "Reactor.hh"
#include "Display.hh"
#include "RenderSettings.hh"
#include "IntegerSetting.hh"
#include "EventDistributor.hh"
#include "VDP.hh"
#include "V9990.hh"
#include "imgui.h"
#include "unreachable.hh"
#include <memory>
 
#include "components.hh"
#if COMPONENT_LASERDISC
#include "LaserdiscPlayer.hh"
#include "LDSDLRasterizer.hh"
#endif
 
namespace openmsx {
 
SDLVideoSystem::SDLVideoSystem(Reactor& reactor_)
        : reactor(reactor_)
        , display(reactor.getDisplay())
        , renderSettings(reactor.getDisplay().getRenderSettings())
{
        screen = std::make_unique<VisibleSurface>(
                display,
                reactor.getRTScheduler(), reactor.getEventDistributor(),
                reactor.getInputEventGenerator(), reactor.getCliComm(),
                *this);
 
        snowLayer = screen->createSnowLayer();
        osdGuiLayer = screen->createOSDGUILayer(display.getOSDGUI());
        imGuiLayer = screen->createImGUILayer(reactor.getImGuiManager());
        display.addLayer(*snowLayer);
        display.addLayer(*osdGuiLayer);
        display.addLayer(*imGuiLayer);
 
        renderSettings.getFullScreenSetting().attach(*this);
        renderSettings.getScaleFactorSetting().attach(*this);
}
 
SDLVideoSystem::~SDLVideoSystem()
{
        renderSettings.getScaleFactorSetting().detach(*this);
        renderSettings.getFullScreenSetting().detach(*this);
 
        display.removeLayer(*imGuiLayer);
        display.removeLayer(*osdGuiLayer);
        display.removeLayer(*snowLayer);
}
 
std::unique_ptr<Rasterizer> SDLVideoSystem::createRasterizer(VDP& vdp)
{
        assert(renderSettings.getRenderer() == RenderSettings::RendererID::SDLGL_PP);
        std::string videoSource = (vdp.getName() == "VDP")
                                ? "MSX" // for backwards compatibility
                                : vdp.getName();
        auto& motherBoard = vdp.getMotherBoard();
        return std::make_unique<SDLRasterizer>(
                vdp, display, *screen,
                std::make_unique<PostProcessor>(
                        motherBoard, display, *screen,
                        videoSource, 640, 240, true));
}
 
std::unique_ptr<V9990Rasterizer> SDLVideoSystem::createV9990Rasterizer(
        V9990& vdp)
{
        assert(renderSettings.getRenderer() == RenderSettings::RendererID::SDLGL_PP);
        std::string videoSource = (vdp.getName() == "Sunrise GFX9000")
                                ? "GFX9000" // for backwards compatibility
                                : vdp.getName();
        MSXMotherBoard& motherBoard = vdp.getMotherBoard();
        return std::make_unique<V9990SDLRasterizer>(
                vdp, display, *screen,
                std::make_unique<PostProcessor>(
                        motherBoard, display, *screen,
                        videoSource, 1280, 240, true));
}
 
#if COMPONENT_LASERDISC
std::unique_ptr<LDRasterizer> SDLVideoSystem::createLDRasterizer(
        LaserdiscPlayer& ld)
{
        assert(renderSettings.getRenderer() == RenderSettings::RendererID::SDLGL_PP);
        std::string videoSource = "Laserdisc"; // TODO handle multiple???
        MSXMotherBoard& motherBoard = ld.getMotherBoard();
        return std::make_unique<LDSDLRasterizer>(
                std::make_unique<PostProcessor>(
                        motherBoard, display, *screen,
                        videoSource, 640, 480, false));
}
#endif
 
void SDLVideoSystem::flush()
{
        screen->finish();
}
 
void SDLVideoSystem::takeScreenShot(const std::string& filename, bool withOsd)
{
        if (withOsd) {
                // we can directly save current content as screenshot
                screen->saveScreenshot(filename);
        } else {
                // we first need to re-render to an off-screen surface
                // with OSD layers disabled
                ScopedLayerHider hideOsd(*osdGuiLayer);
                ScopedLayerHider hideImgui(*imGuiLayer);
                std::unique_ptr<OutputSurface> surf = screen->createOffScreenSurface();
                display.repaintImpl(*surf);
                surf->saveScreenshot(filename);
        }
}
 
void SDLVideoSystem::updateWindowTitle()
{
        screen->updateWindowTitle();
}
 
gl::ivec2 SDLVideoSystem::getMouseCoord()
{
        int mouseX, mouseY;
        SDL_GetMouseState(&mouseX, &mouseY);
        return {mouseX, mouseY};
}
 
OutputSurface* SDLVideoSystem::getOutputSurface()
{
        return screen.get();
}
 
void SDLVideoSystem::showCursor(bool show)
{
        SDL_ShowCursor(show ? SDL_ENABLE : SDL_DISABLE);
        if (show) {
                ImGui::GetIO().ConfigFlags &= ~ImGuiConfigFlags_NoMouseCursorChange;
        } else {
                ImGui::GetIO().ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange;
        }
}
 
bool SDLVideoSystem::getCursorEnabled()
{
        return SDL_ShowCursor(SDL_QUERY) == SDL_ENABLE;
}
 
std::string SDLVideoSystem::getClipboardText()
{
        std::string result;
        if (char* text = SDL_GetClipboardText()) {
                result = text;
                SDL_free(text);
        }
        return result;
}
 
void SDLVideoSystem::setClipboardText(zstring_view text)
{
        if (SDL_SetClipboardText(text.c_str()) != 0) {
                const char* err = SDL_GetError();
                SDL_ClearError();
                throw CommandException(err);
        }
}
 
std::optional<gl::ivec2> SDLVideoSystem::getWindowPosition()
{
        return screen->getWindowPosition();
}
 
void SDLVideoSystem::setWindowPosition(gl::ivec2 pos)
{
        screen->setWindowPosition(pos);
}
 
void SDLVideoSystem::repaint()
{
        // With SDL we can simply repaint the display directly.
        display.repaintImpl();
}
 
void SDLVideoSystem::update(const Setting& subject) noexcept
{
        if (&subject == &renderSettings.getFullScreenSetting()) {
                screen->setFullScreen(renderSettings.getFullScreen());
        } else if (&subject == &renderSettings.getScaleFactorSetting()) {
                screen->resize();
        } else {
                UNREACHABLE;
        }
}
 
bool SDLVideoSystem::signalEvent(const Event& /*event*/)
{
        // TODO: Currently window size depends only on scale factor.
        //       Maybe in the future it will be handled differently.
        //const auto& resizeEvent = get_event<ResizeEvent>(event);
        //resize(resizeEvent.getX(), resizeEvent.getY());
        //resize();
        return false;
}
 
} // namespace openmsx