SDLVideoSystem.cc

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#include "SDLVideoSystem.hh"
#include "SDLVisibleSurface.hh"
#include "SDLRasterizer.hh"
#include "V9990SDLRasterizer.hh"
#include "FBPostProcessor.hh"
#include "Reactor.hh"
#include "Display.hh"
#include "RenderSettings.hh"
#include "IntegerSetting.hh"
#include "EventDistributor.hh"
#include "VDP.hh"
#include "V9990.hh"
#include "build-info.hh"
#include "unreachable.hh"
#include <memory>
 
#include "components.hh"
#if COMPONENT_GL
#include "SDLGLVisibleSurface.hh"
#include "GLPostProcessor.hh"
#endif
#if COMPONENT_LASERDISC
#include "LaserdiscPlayer.hh"
#include "LDSDLRasterizer.hh"
#endif
 
namespace openmsx {
 
SDLVideoSystem::SDLVideoSystem(Reactor& reactor_, CommandConsole& console)
        : reactor(reactor_)
        , display(reactor.getDisplay())
        , renderSettings(reactor.getDisplay().getRenderSettings())
{
        resize();
 
        consoleLayer = screen->createConsoleLayer(reactor, console);
        snowLayer = screen->createSnowLayer();
        osdGuiLayer = screen->createOSDGUILayer(display.getOSDGUI());
        display.addLayer(*consoleLayer);
        display.addLayer(*snowLayer);
        display.addLayer(*osdGuiLayer);
 
        renderSettings.getScaleFactorSetting().attach(*this);
 
        reactor.getEventDistributor().registerEventListener(
                EventType::RESIZE, *this);
}
 
SDLVideoSystem::~SDLVideoSystem()
{
        reactor.getEventDistributor().unregisterEventListener(
                EventType::RESIZE, *this);
 
        renderSettings.getScaleFactorSetting().detach(*this);
 
        display.removeLayer(*osdGuiLayer);
        display.removeLayer(*snowLayer);
        display.removeLayer(*consoleLayer);
}
 
std::unique_ptr<Rasterizer> SDLVideoSystem::createRasterizer(VDP& vdp)
{
        std::string videoSource = (vdp.getName() == "VDP")
                                ? "MSX" // for backwards compatibility
                                : vdp.getName();
        auto& motherBoard = vdp.getMotherBoard();
        switch (renderSettings.getRenderer()) {
        case RenderSettings::SDL:
                switch (screen->getPixelFormat().getBytesPerPixel()) {
#if HAVE_16BPP
                case 2:
                        return std::make_unique<SDLRasterizer<uint16_t>>(
                                vdp, display, *screen,
                                std::make_unique<FBPostProcessor<uint16_t>>(
                                        motherBoard, display, *screen,
                                        videoSource, 640, 240, true));
#endif
#if HAVE_32BPP
                case 4:
                        return std::make_unique<SDLRasterizer<uint32_t>>(
                                vdp, display, *screen,
                                std::make_unique<FBPostProcessor<uint32_t>>(
                                        motherBoard, display, *screen,
                                        videoSource, 640, 240, true));
#endif
                default:
                        UNREACHABLE; return nullptr;
                }
#if COMPONENT_GL
        case RenderSettings::SDLGL_PP:
                return std::make_unique<SDLRasterizer<uint32_t>>(
                        vdp, display, *screen,
                        std::make_unique<GLPostProcessor>(
                                motherBoard, display, *screen,
                                videoSource, 640, 240, true));
#endif
        default:
                UNREACHABLE; return nullptr;
        }
}
 
std::unique_ptr<V9990Rasterizer> SDLVideoSystem::createV9990Rasterizer(
        V9990& vdp)
{
        std::string videoSource = (vdp.getName() == "Sunrise GFX9000")
                                ? "GFX9000" // for backwards compatibility
                                : vdp.getName();
        MSXMotherBoard& motherBoard = vdp.getMotherBoard();
        switch (renderSettings.getRenderer()) {
        case RenderSettings::SDL:
                switch (screen->getPixelFormat().getBytesPerPixel()) {
#if HAVE_16BPP
                case 2:
                        return std::make_unique<V9990SDLRasterizer<uint16_t>>(
                                vdp, display, *screen,
                                std::make_unique<FBPostProcessor<uint16_t>>(
                                        motherBoard, display, *screen,
                                        videoSource, 1280, 240, true));
#endif
#if HAVE_32BPP
                case 4:
                        return std::make_unique<V9990SDLRasterizer<uint32_t>>(
                                vdp, display, *screen,
                                std::make_unique<FBPostProcessor<uint32_t>>(
                                        motherBoard, display, *screen,
                                        videoSource, 1280, 240, true));
#endif
                default:
                        UNREACHABLE; return nullptr;
                }
#if COMPONENT_GL
        case RenderSettings::SDLGL_PP:
                return std::make_unique<V9990SDLRasterizer<uint32_t>>(
                        vdp, display, *screen,
                        std::make_unique<GLPostProcessor>(
                                motherBoard, display, *screen,
                                videoSource, 1280, 240, true));
#endif
        default:
                UNREACHABLE; return nullptr;
        }
}
 
#if COMPONENT_LASERDISC
std::unique_ptr<LDRasterizer> SDLVideoSystem::createLDRasterizer(
        LaserdiscPlayer& ld)
{
        std::string videoSource = "Laserdisc"; // TODO handle multiple???
        MSXMotherBoard& motherBoard = ld.getMotherBoard();
        switch (renderSettings.getRenderer()) {
        case RenderSettings::SDL:
                switch (screen->getPixelFormat().getBytesPerPixel()) {
#if HAVE_16BPP
                case 2:
                        return std::make_unique<LDSDLRasterizer<uint16_t>>(
                                *screen,
                                std::make_unique<FBPostProcessor<uint16_t>>(
                                        motherBoard, display, *screen,
                                        videoSource, 640, 480, false));
#endif
#if HAVE_32BPP
                case 4:
                        return std::make_unique<LDSDLRasterizer<uint32_t>>(
                                *screen,
                                std::make_unique<FBPostProcessor<uint32_t>>(
                                        motherBoard, display, *screen,
                                        videoSource, 640, 480, false));
#endif
                default:
                        UNREACHABLE; return nullptr;
                }
#if COMPONENT_GL
        case RenderSettings::SDLGL_PP:
                return std::make_unique<LDSDLRasterizer<uint32_t>>(
                        *screen,
                        std::make_unique<GLPostProcessor>(
                                motherBoard, display, *screen,
                                videoSource, 640, 480, false));
#endif
        default:
                UNREACHABLE; return nullptr;
        }
}
#endif
 
gl::ivec2 SDLVideoSystem::getWindowSize()
{
        int factor = renderSettings.getScaleFactor();
        switch (renderSettings.getRenderer()) {
        case RenderSettings::SDL:
                // We don't have 4x software scalers yet.
                if (factor > 3) factor = 3;
                break;
        case RenderSettings::SDLGL_PP:
                // All scale factors are supported.
                break;
        default:
                UNREACHABLE;
        }
        return {320 * factor, 240 * factor};
}
 
// TODO: If we can switch video system at any time (not just frame end),
//       is this polling approach necessary at all?
bool SDLVideoSystem::checkSettings()
{
        // Check resolution.
        if (getWindowSize() != screen->getLogicalSize()) {
                return false;
        }
 
        // Check fullscreen.
        return screen->setFullScreen(renderSettings.getFullScreen());
}
 
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 hideConsole(*consoleLayer);
                ScopedLayerHider hideOsd(*osdGuiLayer);
                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);
}
 
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);
        }
}
 
void SDLVideoSystem::repaint()
{
        // With SDL we can simply repaint the display directly.
        display.repaintImpl();
}
 
void SDLVideoSystem::resize()
{
        auto& rtScheduler         = reactor.getRTScheduler();
        auto& eventDistributor    = reactor.getEventDistributor();
        auto& inputEventGenerator = reactor.getInputEventGenerator();
 
        auto [width, height] = getWindowSize();
        // Destruct existing output surface before creating a new one.
        screen.reset();
 
        switch (renderSettings.getRenderer()) {
        case RenderSettings::SDL:
                screen = std::make_unique<SDLVisibleSurface>(
                        width, height, display, rtScheduler,
                        eventDistributor, inputEventGenerator,
                        reactor.getCliComm(), *this);
                break;
#if COMPONENT_GL
        case RenderSettings::SDLGL_PP:
                screen = std::make_unique<SDLGLVisibleSurface>(
                        width, height, display, rtScheduler,
                        eventDistributor, inputEventGenerator,
                        reactor.getCliComm(), *this);
                break;
#endif
        default:
                UNREACHABLE;
        }
}
 
void SDLVideoSystem::update(const Setting& subject) noexcept
{
        if (&subject == &renderSettings.getScaleFactorSetting()) {
                // TODO: This is done via checkSettings instead,
                //       but is that still needed?
                //resize();
        } else {
                UNREACHABLE;
        }
}
 
int SDLVideoSystem::signalEvent(const Event& /*event*/) noexcept
{
        // TODO: Currently window size depends only on scale factor.
        //       Maybe in the future it will be handled differently.
        //const auto& resizeEvent = get<ResizeEvent>(event);
        //resize(resizeEvent.getX(), resizeEvent.getY());
        //resize();
        return 0;
}
 
} // namespace openmsx