implement the frog color management protocol
Xaver Hugl
11 months ago
parent
15d6d8c336
commit
9d4fe3adf1
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/*
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SPDX-FileCopyrightText: 2023 Xaver Hugl <xaver.hugl@gmail.com>
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SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
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*/
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#include "frog_colormanagement_v1.h"
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#include "display.h"
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#include "surface.h"
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#include "surface_p.h"
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namespace KWin
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{
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static constexpr uint32_t s_version = 1;
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FrogColorManagementV1::FrogColorManagementV1(Display *display, QObject *parent)
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: QObject(parent)
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, QtWaylandServer::frog_color_management_factory_v1(*display, s_version)
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{
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}
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FrogColorManagementV1::~FrogColorManagementV1()
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{
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}
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void FrogColorManagementV1::frog_color_management_factory_v1_get_color_managed_surface(Resource *resource, wl_resource *surface, uint32_t callback)
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{
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SurfaceInterface *surf = SurfaceInterface::get(surface);
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SurfaceInterfacePrivate::get(surf)->frogColorManagement = new FrogColorManagementSurfaceV1(surf, resource->client(), callback);
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}
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void FrogColorManagementV1::frog_color_management_factory_v1_destroy(Resource *resource)
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{
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wl_resource_destroy(resource->handle);
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}
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FrogColorManagementSurfaceV1::FrogColorManagementSurfaceV1(SurfaceInterface *surface, wl_client *client, uint32_t id)
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: QtWaylandServer::frog_color_managed_surface(client, id, s_version)
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, m_surface(surface)
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{
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}
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FrogColorManagementSurfaceV1::~FrogColorManagementSurfaceV1()
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{
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if (m_surface) {
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const auto priv = SurfaceInterfacePrivate::get(m_surface);
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priv->pending->colorDescription = ColorDescription::sRGB;
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priv->pending->colorDescriptionIsSet = true;
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priv->frogColorManagement = nullptr;
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}
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}
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static QtWaylandServer::frog_color_managed_surface::transfer_function kwinToFrogTransferFunction(NamedTransferFunction tf)
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{
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switch (tf) {
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case NamedTransferFunction::sRGB:
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return QtWaylandServer::frog_color_managed_surface::transfer_function_srgb;
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case NamedTransferFunction::PerceptualQuantizer:
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return QtWaylandServer::frog_color_managed_surface::transfer_function_st2084_pq;
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case NamedTransferFunction::scRGB:
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return QtWaylandServer::frog_color_managed_surface::transfer_function_scrgb_linear;
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case NamedTransferFunction::linear:
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return QtWaylandServer::frog_color_managed_surface::transfer_function_scrgb_linear;
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}
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return QtWaylandServer::frog_color_managed_surface::transfer_function_undefined;
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}
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uint16_t encodePrimary(float primary)
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{
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return uint16_t(std::clamp<float>(std::round(primary / 0.00002), 0, 0xC350));
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}
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void FrogColorManagementSurfaceV1::setPreferredColorDescription(const ColorDescription &colorDescription)
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{
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const auto &color = colorDescription.colorimetry();
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send_preferred_metadata(kwinToFrogTransferFunction(colorDescription.transferFunction()),
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encodePrimary(color.red.x()), encodePrimary(color.red.y()),
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encodePrimary(color.green.x()), encodePrimary(color.green.y()),
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encodePrimary(color.blue.x()), encodePrimary(color.blue.y()),
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encodePrimary(color.white.x()), encodePrimary(color.white.y()),
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std::round(colorDescription.maxHdrHighlightBrightness()),
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std::round(colorDescription.minHdrBrightness() / 0.0001),
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std::round(colorDescription.maxFrameAverageBrightness()));
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}
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void FrogColorManagementSurfaceV1::frog_color_managed_surface_set_known_transfer_function(Resource *resource, uint32_t transfer_function)
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{
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switch (transfer_function) {
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case transfer_function_undefined:
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case transfer_function_srgb:
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case transfer_function_gamma_22:
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m_transferFunction = NamedTransferFunction::sRGB;
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break;
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case transfer_function_st2084_pq:
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m_transferFunction = NamedTransferFunction::PerceptualQuantizer;
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break;
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case transfer_function_scrgb_linear:
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m_transferFunction = NamedTransferFunction::scRGB;
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break;
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}
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updateColorDescription();
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}
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void FrogColorManagementSurfaceV1::frog_color_managed_surface_set_known_container_color_volume(Resource *resource, uint32_t primaries)
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{
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switch (primaries) {
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case primaries_undefined:
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case primaries_rec709:
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m_colorimetry = NamedColorimetry::BT709;
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break;
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case primaries_rec2020:
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m_colorimetry = NamedColorimetry::BT2020;
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break;
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}
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updateColorDescription();
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}
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void FrogColorManagementSurfaceV1::frog_color_managed_surface_set_render_intent(Resource *resource, uint32_t render_intent)
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{
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// there's only perceptual right now, so this can be ignored
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}
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void FrogColorManagementSurfaceV1::frog_color_managed_surface_set_hdr_metadata(Resource *resource,
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uint32_t mastering_display_primary_red_x, uint32_t mastering_display_primary_red_y,
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uint32_t mastering_display_primary_green_x, uint32_t mastering_display_primary_green_y,
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uint32_t mastering_display_primary_blue_x, uint32_t mastering_display_primary_blue_y,
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uint32_t mastering_white_point_x, uint32_t mastering_white_point_y,
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uint32_t max_display_mastering_luminance, uint32_t min_display_mastering_luminance,
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uint32_t max_cll, uint32_t max_fall)
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{
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m_maxPeakBrightness = max_cll;
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m_maxFrameAverageBrightness = max_fall;
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updateColorDescription();
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}
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void FrogColorManagementSurfaceV1::frog_color_managed_surface_destroy(Resource *resource)
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{
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wl_resource_destroy(resource->handle);
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}
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void FrogColorManagementSurfaceV1::frog_color_managed_surface_destroy_resource(Resource *resource)
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{
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delete this;
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}
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void FrogColorManagementSurfaceV1::updateColorDescription()
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{
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if (m_surface) {
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// TODO make brightness values optional in ColorDescription
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SurfaceInterfacePrivate *priv = SurfaceInterfacePrivate::get(m_surface);
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priv->pending->colorDescription = ColorDescription(m_colorimetry, m_transferFunction, 0, 0, m_maxFrameAverageBrightness, m_maxPeakBrightness);
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priv->pending->colorDescriptionIsSet = true;
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}
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}
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}
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#include "moc_frog_colormanagement_v1.cpp"
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@ -0,0 +1,62 @@
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/*
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SPDX-FileCopyrightText: 2023 Xaver Hugl <xaver.hugl@gmail.com>
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SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
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*/
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#pragma once
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#include "libkwineffects/colorspace.h"
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#include "qwayland-server-frog-color-management-v1.h"
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#include <QObject>
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#include <QPointer>
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namespace KWin
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{
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class Display;
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class SurfaceInterface;
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class FrogColorManagementV1 : public QObject, private QtWaylandServer::frog_color_management_factory_v1
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{
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Q_OBJECT
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public:
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explicit FrogColorManagementV1(Display *display, QObject *parent);
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~FrogColorManagementV1() override;
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private:
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void frog_color_management_factory_v1_get_color_managed_surface(Resource *resource, wl_resource *surface, uint32_t callback) override;
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void frog_color_management_factory_v1_destroy(Resource *resource) override;
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};
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class FrogColorManagementSurfaceV1 : public QObject, private QtWaylandServer::frog_color_managed_surface
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{
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Q_OBJECT
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public:
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explicit FrogColorManagementSurfaceV1(SurfaceInterface *surface, wl_client *client, uint32_t id);
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~FrogColorManagementSurfaceV1() override;
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void setPreferredColorDescription(const ColorDescription &colorDescription);
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private:
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void frog_color_managed_surface_set_known_transfer_function(Resource *resource, uint32_t transfer_function) override;
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void frog_color_managed_surface_set_known_container_color_volume(Resource *resource, uint32_t primaries) override;
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void frog_color_managed_surface_set_render_intent(Resource *resource, uint32_t render_intent) override;
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void frog_color_managed_surface_set_hdr_metadata(Resource *resource, uint32_t mastering_display_primary_red_x, uint32_t mastering_display_primary_red_y,
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uint32_t mastering_display_primary_green_x, uint32_t mastering_display_primary_green_y,
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uint32_t mastering_display_primary_blue_x, uint32_t mastering_display_primary_blue_y,
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uint32_t mastering_white_point_x, uint32_t mastering_white_point_y,
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uint32_t max_display_mastering_luminance, uint32_t min_display_mastering_luminance,
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uint32_t max_cll, uint32_t max_fall) override;
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void frog_color_managed_surface_destroy(Resource *resource) override;
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void frog_color_managed_surface_destroy_resource(Resource *resource) override;
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void updateColorDescription();
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const QPointer<SurfaceInterface> m_surface;
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NamedTransferFunction m_transferFunction = NamedTransferFunction::sRGB;
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NamedColorimetry m_colorimetry = NamedColorimetry::BT709;
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float m_maxFrameAverageBrightness = 0;
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float m_maxPeakBrightness = 0;
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};
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}
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@ -0,0 +1,356 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="frog_color_management_v1">
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<copyright>
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Copyright © 2023 Joshua Ashton for Valve Software
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Copyright © 2023 Xaver Hugl
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice (including the next
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paragraph) shall be included in all copies or substantial portions of the
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Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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</copyright>
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<description summary="experimental color management protocol">
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The aim of this color management extension is to get HDR games working quickly,
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and have an easy way to test implementations in the wild before the upstream
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protocol is ready to be merged.
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For that purpose it's intentionally limited and cut down and does not serve
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all uses cases.
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</description>
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<interface name="frog_color_management_factory_v1" version="1">
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<description summary="color management factory">
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The color management factory singleton creates color managed surface objects.
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</description>
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<request name="destroy" type="destructor"></request>
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<request name="get_color_managed_surface">
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<description summary="create color management interface for surface">
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</description>
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<arg name="surface" type="object" interface="wl_surface"
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summary="target surface"/>
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<arg name="callback" type="new_id" interface="frog_color_managed_surface"
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summary="new color managed surface object"/>
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</request>
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</interface>
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<interface name="frog_color_managed_surface" version="1">
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<description summary="color managed surface">
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Interface for changing surface color management and HDR state.
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An implementation must: support every part of the version
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of the frog_color_managed_surface interface it exposes.
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Including all known enums associated with a given version.
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</description>
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<request name="destroy" type="destructor">
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<description summary="destroy color managed surface">
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Destroying the color managed surface resets all known color
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state for the surface back to 'undefined' implementation-specific
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values.
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</description>
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</request>
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<enum name="transfer_function">
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<description summary="known transfer functions">
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Extended information on the transfer functions described
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here can be found in the Khronos Data Format specification:
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https://registry.khronos.org/DataFormat/specs/1.3/dataformat.1.3.html
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</description>
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<entry name="undefined" value="0" summary="specifies undefined, implementation-specific handling of the surface's transfer function."/>
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<entry name="srgb" value="1" summary="specifies the sRGB non-linear EOTF. An implementation may: display this as Gamma 2.2 for the purposes of being consistent with content rendering across displays, rendering_intent and user expectations."/>
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<entry name="gamma_22" value="2" summary="specifies gamma 2.2 power curve as the EOTF"/>
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<entry name="st2084_pq" value="3" summary="specifies the SMPTE ST2084 Perceptual Quantizer (PQ) EOTF"/>
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<entry name="scrgb_linear" value="4" summary="specifies the scRGB (extended sRGB) linear EOTF. Note: Primaries outside the gamut triangle specified can be expressed with negative values for this transfer function."/>
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</enum>
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<request name="set_known_transfer_function">
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<description summary="sets a known transfer function for a surface"/>
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<arg name="transfer_function" type="uint" enum="transfer_function" summary="transfer function for the surface"/>
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</request>
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<enum name="primaries">
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<description summary="known primaries"/>
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<entry name="undefined" value="0" summary="specifies undefined, implementation-specific handling"/>
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<entry name="rec709" value="1" summary="specifies Rec.709/sRGB primaries with D65 white point"/>
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<entry name="rec2020" value="2" summary="specifies Rec.2020/HDR10 primaries with D65 white point"/>
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</enum>
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<request name="set_known_container_color_volume">
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<description summary="sets the container color volume (primaries) for a surface"/>
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<arg name="primaries" type="uint" enum="primaries" summary="primaries for the surface"/>
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</request>
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<enum name="render_intent">
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<description summary="known render intents">
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Extended information on render intents described
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here can be found in ICC.1:2022:
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https://www.color.org/specification/ICC.1-2022-05.pdf
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</description>
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<entry name="perceptual" value="0" summary="perceptual"/>
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</enum>
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<request name="set_render_intent">
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<description summary="sets the render intent for a surface">
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NOTE: On a surface with "perceptual" (default) render intent, handling of the container's color volume
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is implementation-specific, and may differ between different transfer functions it is paired with:
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ie. sRGB + 709 rendering may have it's primaries widened to more of the available display's gamut
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to be be more pleasing for the viewer.
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Compared to scRGB Linear + 709 being treated faithfully as 709
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(including utilizing negatives out of the 709 gamut triangle)
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</description>
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<arg name="render_intent" type="uint" enum="render_intent" summary="render intent for the surface"/>
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</request>
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<request name="set_hdr_metadata">
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<description summary="set HDR metadata for a surface">
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Forwards HDR metadata from the client to the compositor.
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HDR Metadata Infoframe as per CTA 861.G spec.
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Usage of this HDR metadata is implementation specific and
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outside of the scope of this protocol.
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</description>
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<arg name="mastering_display_primary_red_x" type="uint">
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<description summary="red primary x coordinate">
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Mastering Red Color Primary X Coordinate of the Data.
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Coded as unsigned 16-bit values in units of
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0.00002, where 0x0000 represents zero and 0xC350
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represents 1.0000.
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</description>
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</arg>
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<arg name="mastering_display_primary_red_y" type="uint">
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<description summary="red primary y coordinate">
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Mastering Red Color Primary Y Coordinate of the Data.
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Coded as unsigned 16-bit values in units of
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0.00002, where 0x0000 represents zero and 0xC350
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represents 1.0000.
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</description>
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</arg>
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<arg name="mastering_display_primary_green_x" type="uint">
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<description summary="green primary x coordinate">
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Mastering Green Color Primary X Coordinate of the Data.
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Coded as unsigned 16-bit values in units of
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0.00002, where 0x0000 represents zero and 0xC350
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represents 1.0000.
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</description>
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</arg>
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<arg name="mastering_display_primary_green_y" type="uint">
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<description summary="green primary y coordinate">
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Mastering Green Color Primary Y Coordinate of the Data.
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Coded as unsigned 16-bit values in units of
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0.00002, where 0x0000 represents zero and 0xC350
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represents 1.0000.
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</description>
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</arg>
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<arg name="mastering_display_primary_blue_x" type="uint">
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<description summary="blue primary x coordinate">
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Mastering Blue Color Primary X Coordinate of the Data.
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Coded as unsigned 16-bit values in units of
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0.00002, where 0x0000 represents zero and 0xC350
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represents 1.0000.
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</description>
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</arg>
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<arg name="mastering_display_primary_blue_y" type="uint">
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<description summary="blue primary y coordinate">
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Mastering Blue Color Primary Y Coordinate of the Data.
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Coded as unsigned 16-bit values in units of
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0.00002, where 0x0000 represents zero and 0xC350
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represents 1.0000.
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</description>
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</arg>
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<arg name="mastering_white_point_x" type="uint">
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<description summary="white point x coordinate">
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Mastering White Point X Coordinate of the Data.
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These are coded as unsigned 16-bit values in units of
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0.00002, where 0x0000 represents zero and 0xC350
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represents 1.0000.
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</description>
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</arg>
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<arg name="mastering_white_point_y" type="uint">
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<description summary="white point y coordinate">
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Mastering White Point Y Coordinate of the Data.
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These are coded as unsigned 16-bit values in units of
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0.00002, where 0x0000 represents zero and 0xC350
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represents 1.0000.
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</description>
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</arg>
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<arg name="max_display_mastering_luminance" type="uint">
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<description summary="max display mastering luminance">
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Max Mastering Display Luminance.
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This value is coded as an unsigned 16-bit value in units of 1 cd/m2,
|
||||
where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="min_display_mastering_luminance" type="uint">
|
||||
<description summary="min display mastering luminance">
|
||||
Min Mastering Display Luminance.
|
||||
This value is coded as an unsigned 16-bit value in units of
|
||||
0.0001 cd/m2, where 0x0001 represents 0.0001 cd/m2 and 0xFFFF
|
||||
represents 6.5535 cd/m2.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="max_cll" type="uint">
|
||||
<description summary="max content light level">
|
||||
Max Content Light Level.
|
||||
This value is coded as an unsigned 16-bit value in units of 1 cd/m2,
|
||||
where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="max_fall" type="uint">
|
||||
<description summary="max frame average light level">
|
||||
Max Frame Average Light Level.
|
||||
This value is coded as an unsigned 16-bit value in units of 1 cd/m2,
|
||||
where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
|
||||
</description>
|
||||
</arg>
|
||||
</request>
|
||||
|
||||
<event name="preferred_metadata">
|
||||
<description summary="preferred metadata for a surface">
|
||||
Current preferred metadata for a surface.
|
||||
The application should use this information to tone-map its buffers
|
||||
to this target before committing.
|
||||
|
||||
This metadata does not necessarily correspond to any physical output, but
|
||||
rather what the compositor thinks would be best for a given surface.
|
||||
</description>
|
||||
<arg name="transfer_function" type="uint" enum="transfer_function">
|
||||
<description summary="output's current transfer function">
|
||||
Specifies a known transfer function that corresponds to the
|
||||
output the surface is targeting.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="output_display_primary_red_x" type="uint">
|
||||
<description summary="red primary x coordinate">
|
||||
Output Red Color Primary X Coordinate of the Data.
|
||||
|
||||
Coded as unsigned 16-bit values in units of
|
||||
0.00002, where 0x0000 represents zero and 0xC350
|
||||
represents 1.0000.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="output_display_primary_red_y" type="uint">
|
||||
<description summary="red primary y coordinate">
|
||||
Output Red Color Primary Y Coordinate of the Data.
|
||||
|
||||
Coded as unsigned 16-bit values in units of
|
||||
0.00002, where 0x0000 represents zero and 0xC350
|
||||
represents 1.0000.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="output_display_primary_green_x" type="uint">
|
||||
<description summary="green primary x coordinate">
|
||||
Output Green Color Primary X Coordinate of the Data.
|
||||
|
||||
Coded as unsigned 16-bit values in units of
|
||||
0.00002, where 0x0000 represents zero and 0xC350
|
||||
represents 1.0000.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="output_display_primary_green_y" type="uint">
|
||||
<description summary="green primary y coordinate">
|
||||
Output Green Color Primary Y Coordinate of the Data.
|
||||
|
||||
Coded as unsigned 16-bit values in units of
|
||||
0.00002, where 0x0000 represents zero and 0xC350
|
||||
represents 1.0000.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="output_display_primary_blue_x" type="uint">
|
||||
<description summary="blue primary x coordinate">
|
||||
Output Blue Color Primary X Coordinate of the Data.
|
||||
|
||||
Coded as unsigned 16-bit values in units of
|
||||
0.00002, where 0x0000 represents zero and 0xC350
|
||||
represents 1.0000.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="output_display_primary_blue_y" type="uint">
|
||||
<description summary="blue primary y coordinate">
|
||||
Output Blue Color Primary Y Coordinate of the Data.
|
||||
|
||||
Coded as unsigned 16-bit values in units of
|
||||
0.00002, where 0x0000 represents zero and 0xC350
|
||||
represents 1.0000.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="output_white_point_x" type="uint">
|
||||
<description summary="white point x coordinate">
|
||||
Output White Point X Coordinate of the Data.
|
||||
|
||||
These are coded as unsigned 16-bit values in units of
|
||||
0.00002, where 0x0000 represents zero and 0xC350
|
||||
represents 1.0000.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="output_white_point_y" type="uint">
|
||||
<description summary="white point y coordinate">
|
||||
Output White Point Y Coordinate of the Data.
|
||||
|
||||
These are coded as unsigned 16-bit values in units of
|
||||
0.00002, where 0x0000 represents zero and 0xC350
|
||||
represents 1.0000.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="max_luminance" type="uint">
|
||||
<description summary="maximum luminance">
|
||||
Max Output Luminance
|
||||
The max luminance in nits that the output is capable of rendering in small areas.
|
||||
Content should: not exceed this value to avoid clipping.
|
||||
|
||||
This value is coded as an unsigned 16-bit value in units of 1 cd/m2,
|
||||
where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="min_luminance" type="uint">
|
||||
<description summary="minimum luminance">
|
||||
Min Output Luminance
|
||||
The min luminance that the output is capable of rendering.
|
||||
Content should: not exceed this value to avoid clipping.
|
||||
|
||||
This value is coded as an unsigned 16-bit value in units of
|
||||
0.0001 cd/m2, where 0x0001 represents 0.0001 cd/m2 and 0xFFFF
|
||||
represents 6.5535 cd/m2.
|
||||
</description>
|
||||
</arg>
|
||||
<arg name="max_full_frame_luminance" type="uint">
|
||||
<description summary="maximum full frame luminance">
|
||||
Max Full Frame Luminance
|
||||
The max luminance in nits that the output is capable of rendering for the
|
||||
full frame sustained.
|
||||
|
||||
This value is coded as an unsigned 16-bit value in units of 1 cd/m2,
|
||||
where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
|
||||
</description>
|
||||
</arg>
|
||||
</event>
|
||||
</interface>
|
||||
</protocol>
|
||||
Loading…
Reference in New Issue