File indexing completed on 2024-05-05 17:39:36

 /*
  *  SPDX-FileCopyrightText: 2014-2015 Sebastian Kügler <sebas@kde.org>
  *  SPDX-FileCopyrightText: 2021 Méven Car <meven.car@enioka.com>
  *
  *  SPDX-License-Identifier: LGPL-2.1-or-later
  */
 #include "waylandoutputdevice.h"
 #include "waylandoutputmanagement.h"
 
 #include "kscreen_kwayland_logging.h"
 
 #include "../utils.h"
 
 #include <mode.h>
 #include <output.h>
 
 #include <wayland-server-protocol.h>
 
 #include <utility>
 
 using namespace KScreen;
 
 WaylandOutputDevice::WaylandOutputDevice(int id)
     : QObject()
     , kde_output_device_v2()
     , m_id(id)
 {
 }
 
 WaylandOutputDevice::~WaylandOutputDevice()
 {
     qDeleteAll(m_modes);
 
     kde_output_device_v2_destroy(object());
 }
 
 void WaylandOutputDevice::kde_output_device_v2_geometry(int32_t x,
                                                         int32_t y,
                                                         int32_t physical_width,
                                                         int32_t physical_height,
                                                         int32_t subpixel,
                                                         const QString &make,
                                                         const QString &model,
                                                         int32_t transform)
 {
     m_pos = QPoint(x, y);
     m_physicalSize = QSize(physical_width, physical_height);
     m_subpixel = subpixel;
     m_manufacturer = make;
     m_model = model;
     m_transform = transform;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_current_mode(struct ::kde_output_device_mode_v2 *mode)
 {
     auto m = WaylandOutputDeviceMode::get(mode);
 
     if (*m == *m_mode) {
         // unchanged
         return;
     }
     m_mode = m;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_mode(struct ::kde_output_device_mode_v2 *mode)
 {
     WaylandOutputDeviceMode *m = new WaylandOutputDeviceMode(mode);
     // last mode sent is the current one
     m_mode = m;
     m_modes.append(m);
 
     connect(m, &WaylandOutputDeviceMode::removed, this, [this, m]() {
         m_modes.removeOne(m);
         if (m_mode == m) {
             if (!m_modes.isEmpty()) {
                 m_mode = m_modes.first();
             } else {
                 // was last mode
                 qFatal("KWaylandBackend: no output modes available anymore, this seems like a compositor bug");
             }
         }
 
         delete m;
     });
 }
 
 OutputPtr WaylandOutputDevice::toKScreenOutput()
 {
     OutputPtr output(new Output());
     output->setId(m_id);
     updateKScreenOutput(output);
     return output;
 }
 
 Output::Rotation toKScreenRotation(int32_t transform)
 {
     switch (transform) {
     case WL_OUTPUT_TRANSFORM_NORMAL:
         return Output::None;
     case WL_OUTPUT_TRANSFORM_90:
         return Output::Left;
     case WL_OUTPUT_TRANSFORM_180:
         return Output::Inverted;
     case WL_OUTPUT_TRANSFORM_270:
         return Output::Right;
     case WL_OUTPUT_TRANSFORM_FLIPPED:
         qCWarning(KSCREEN_WAYLAND) << "flipped transform is unsupported by kscreen";
         return Output::None;
     case WL_OUTPUT_TRANSFORM_FLIPPED_90:
         qCWarning(KSCREEN_WAYLAND) << "flipped-90 transform is unsupported by kscreen";
         return Output::Left;
     case WL_OUTPUT_TRANSFORM_FLIPPED_180:
         qCWarning(KSCREEN_WAYLAND) << "flipped-180 transform is unsupported by kscreen";
         return Output::Inverted;
     case WL_OUTPUT_TRANSFORM_FLIPPED_270:
         qCWarning(KSCREEN_WAYLAND) << "flipped-270 transform is unsupported by kscreen";
         return Output::Right;
     default:
         Q_UNREACHABLE();
     }
 }
 
 wl_output_transform toKWaylandTransform(const Output::Rotation rotation)
 {
     switch (rotation) {
     case Output::None:
         return WL_OUTPUT_TRANSFORM_NORMAL;
     case Output::Left:
         return WL_OUTPUT_TRANSFORM_90;
     case Output::Inverted:
         return WL_OUTPUT_TRANSFORM_180;
     case Output::Right:
         return WL_OUTPUT_TRANSFORM_270;
     default:
         Q_UNREACHABLE();
     }
 }
 
 void KScreen::WaylandOutputDevice::updateKScreenModes(OutputPtr &output)
 {
     ModeList modeList;
     QStringList preferredModeIds;
     QString currentModeId = QStringLiteral("-1");
     int modeId = 0;
 
     for (const WaylandOutputDeviceMode *wlMode : std::as_const(m_modes)) {
         ModePtr mode(new Mode());
 
         const QString modeIdStr = QString::number(modeId);
         // KWayland gives the refresh rate as int in mHz
         mode->setId(modeIdStr);
         mode->setRefreshRate(wlMode->refreshRate() / 1000.0);
         mode->setSize(wlMode->size());
         mode->setName(modeName(wlMode));
 
         if (m_mode == wlMode) {
             currentModeId = modeIdStr;
         }
 
         if (wlMode->preferred()) {
             preferredModeIds << modeIdStr;
         }
 
         // Add to the modelist which gets set on the output
         modeList[modeIdStr] = mode;
         modeId++;
     }
     output->setCurrentModeId(currentModeId);
     output->setPreferredModes(preferredModeIds);
     output->setModes(modeList);
 }
 
 void WaylandOutputDevice::updateKScreenOutput(OutputPtr &output)
 {
     // Initialize primary output
     output->setId(m_id);
     output->setEnabled(enabled());
     output->setConnected(true);
     output->setName(name());
     output->setSizeMm(m_physicalSize);
     output->setPos(m_pos);
     output->setRotation(toKScreenRotation(m_transform));
     if (!output->edid()) {
         output->setEdid(m_edid);
     }
 
     QSize currentSize = m_mode->size();
     output->setSize(output->isHorizontal() ? currentSize : currentSize.transposed());
     output->setScale(m_factor);
     output->setType(Utils::guessOutputType(m_outputName, m_outputName));
     output->setCapabilities(static_cast<Output::Capabilities>(static_cast<uint32_t>(m_flags)));
     output->setOverscan(m_overscan);
     output->setVrrPolicy(static_cast<Output::VrrPolicy>(m_vrr_policy));
     output->setRgbRange(static_cast<Output::RgbRange>(m_rgbRange));
 
     updateKScreenModes(output);
 }
 
 QString WaylandOutputDevice::modeId() const
 {
     return QString::number(m_modes.indexOf(m_mode));
 }
 
 WaylandOutputDeviceMode *WaylandOutputDevice::deviceModeFromId(const int modeId) const
 {
     return m_modes.at(modeId);
 }
 
 bool WaylandOutputDevice::setWlConfig(WaylandOutputConfiguration *wlConfig, const KScreen::OutputPtr &output)
 {
     bool changed = false;
 
     // enabled?
     if (enabled() != output->isEnabled()) {
         changed = true;
         wlConfig->enable(object(), output->isEnabled());
     }
 
     // position
     if (globalPosition() != output->pos()) {
         changed = true;
         wlConfig->position(object(), output->pos().x(), output->pos().y());
     }
 
     // scale
     if (!qFuzzyCompare(scale(), output->scale())) {
         changed = true;
         wlConfig->scale(object(), wl_fixed_from_double(output->scale()));
     }
 
     // rotation
     if (toKScreenRotation(m_transform) != output->rotation()) {
         changed = true;
         wlConfig->transform(object(), toKWaylandTransform(output->rotation()));
     }
 
     // mode
     const ModePtr mode = output->currentMode();
     if (mode->size() != pixelSize() || mode->refreshRate() != refreshRate()) {
         bool toIntOk;
         int modeId = mode->id().toInt(&toIntOk);
         Q_ASSERT(toIntOk);
 
         changed = true;
         wlConfig->mode(object(), deviceModeFromId(modeId)->object());
     }
 
     // overscan
     if ((output->capabilities() & Output::Capability::Overscan) && overscan() != output->overscan()) {
         wlConfig->overscan(object(), output->overscan());
         changed = true;
     }
 
     // vrr
     if ((output->capabilities() & Output::Capability::Vrr) && vrrPolicy() != static_cast<uint32_t>(output->vrrPolicy())) {
         wlConfig->set_vrr_policy(object(), static_cast<uint32_t>(output->vrrPolicy()));
         changed = true;
     }
 
     if ((output->capabilities() & Output::Capability::RgbRange) && rgbRange() != static_cast<uint32_t>(output->rgbRange())) {
         wlConfig->set_rgb_range(object(), static_cast<uint32_t>(output->rgbRange()));
         changed = true;
     }
     if (output->priority() != m_index) {
         changed = true;
     }
     // always send all outputs
     if (kde_output_configuration_v2_get_version(wlConfig->object()) >= KDE_OUTPUT_CONFIGURATION_V2_SET_PRIORITY_SINCE_VERSION) {
         wlConfig->set_priority(object(), output->priority());
     }
 
     return changed;
 }
 
 QString WaylandOutputDevice::modeName(const WaylandOutputDeviceMode *m) const
 {
     return QString::number(m->size().width()) + QLatin1Char('x') + QString::number(m->size().height()) + QLatin1Char('@')
         + QString::number(qRound(m->refreshRate() / 1000.0));
 }
 
 QString WaylandOutputDevice::name() const
 {
     return m_outputName;
 }
 
 QDebug operator<<(QDebug dbg, const WaylandOutputDevice *output)
 {
     dbg << "WaylandOutput(Id:" << output->id() << ", Name:" << QString(output->manufacturer() + QLatin1Char(' ') + output->model()) << ")";
     return dbg;
 }
 
 void WaylandOutputDevice::setIndex(uint32_t index)
 {
     m_index = index;
 }
 
 uint32_t WaylandOutputDevice::index() const
 {
     return m_index;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_done()
 {
     Q_EMIT done();
 }
 
 void WaylandOutputDevice::kde_output_device_v2_scale(wl_fixed_t factor)
 {
     const double factorAsDouble = wl_fixed_to_double(factor);
 
     // the fractional scaling protocol only speaks in unit of 120ths
     // using the same scale throughout makes that simpler
     // this also eliminates most loss from wl_fixed
     m_factor = std::round(factorAsDouble * 120) / 120;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_edid(const QString &edid)
 {
     m_edid = QByteArray::fromBase64(edid.toUtf8());
 }
 
 void WaylandOutputDevice::kde_output_device_v2_enabled(int32_t enabled)
 {
     m_enabled = enabled;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_uuid(const QString &uuid)
 {
     m_uuid = uuid;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_serial_number(const QString &serialNumber)
 {
     m_serialNumber = serialNumber;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_eisa_id(const QString &eisaId)
 {
     m_eisaId = eisaId;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_capabilities(uint32_t flags)
 {
     m_flags = flags;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_overscan(uint32_t overscan)
 {
     m_overscan = overscan;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_vrr_policy(uint32_t vrr_policy)
 {
     m_vrr_policy = vrr_policy;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_rgb_range(uint32_t rgb_range)
 {
     m_rgbRange = rgb_range;
 }
 
 void WaylandOutputDevice::kde_output_device_v2_name(const QString &outputName)
 {
     m_outputName = outputName;
 }
 
 QByteArray WaylandOutputDevice::edid() const
 {
     return m_edid;
 }
 
 bool WaylandOutputDevice::enabled() const
 {
     return m_enabled;
 }
 
 int WaylandOutputDevice::id() const
 {
     return m_id;
 }
 
 qreal WaylandOutputDevice::scale() const
 {
     return m_factor;
 }
 
 QString WaylandOutputDevice::manufacturer() const
 {
     return m_manufacturer;
 }
 
 QString WaylandOutputDevice::model() const
 {
     return m_model;
 }
 
 QPoint WaylandOutputDevice::globalPosition() const
 {
     return m_pos;
 }
 
 QSize WaylandOutputDevice::pixelSize() const
 {
     return m_mode->size();
 }
 
 int WaylandOutputDevice::refreshRate() const
 {
     return m_mode->refreshRate();
 }
 
 uint32_t WaylandOutputDevice::vrrPolicy() const
 {
     return m_vrr_policy;
 }
 
 uint32_t WaylandOutputDevice::overscan() const
 {
     return m_overscan;
 }
 
 uint32_t WaylandOutputDevice::capabilities() const
 {
     return m_flags;
 }
 
 uint32_t WaylandOutputDevice::rgbRange() const
 {
     return m_rgbRange;
 }