Support wlroots gamma control protocol

.gitignore

@@ -111,6 +111,10 @@ m4/lt~obsolete.m4
 /data/systemd/redshift.service
 /data/systemd/redshift-gtk.service
 /m4
+/src/gamma-control-client-protocol.h
+/src/gamma-control-protocol.c
+/src/orbital-authorizer-client-protocol.h
+/src/orbital-authorizer-protocol.c
 /src/redshift
 /src/redshift-gtk/defs.py
 /src/redshift-gtk/redshift-gtk

.travis.yml

@@ -5,7 +5,7 @@ matrix:
   include:
     - os: linux
       compiler: gcc
-      dist: trusty
+      dist: xenial
       sudo: false
     - os: osx
       compiler: clang
@@ -23,6 +23,8 @@ addons:
       # VidMode
       - libx11-dev
       - libxxf86vm-dev
+      # Wayland
+      - libwayland-dev
       # GeoClue2
       - libglib2.0-dev
       # GUI
@@ -49,7 +51,7 @@ install:
   - mkdir "$TRAVIS_BUILD_DIR/root"
   - |
     if [ "$TRAVIS_OS_NAME" == "linux" ]; then
-      ./configure --prefix="$TRAVIS_BUILD_DIR/root" --enable-drm --enable-vidmode --enable-randr --enable-geoclue2 --enable-gui --enable-apparmor
+      ./configure --prefix="$TRAVIS_BUILD_DIR/root" --enable-drm --enable-vidmode --enable-randr --enable-geoclue2 --enable-gui --enable-apparmor --with-systemduserunitdir=no
     elif [ "$TRAVIS_OS_NAME" == "osx" ]; then
       ./configure --prefix="$TRAVIS_BUILD_DIR/root" --enable-corelocation --enable-quartz --enable-gui
     fi

appveyor.yml

@@ -17,7 +17,7 @@ build_script:
       $env:MSYSTEM = "MINGW32"
     }
 
-    $env:CONFIGURE_FLAGS = "--disable-drm --disable-randr --disable-vidmode --enable-wingdi --disable-quartz --disable-geoclue2 --disable-corelocation --disable-gui --disable-ubuntu --disable-nls --host=$env:arch-w64-mingw32"
+    $env:CONFIGURE_FLAGS = "--disable-drm --disable-wayland --disable-randr --disable-vidmode --enable-wingdi --disable-quartz --disable-geoclue2 --disable-corelocation --disable-gui --disable-ubuntu --disable-nls --host=$env:arch-w64-mingw32"
 
 - ps: md (Join-Path $env:APPVEYOR_BUILD_FOLDER root)
 - C:\msys64\usr\bin\bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./bootstrap"

configure.ac

@@ -68,6 +68,10 @@ PKG_CHECK_MODULES([XCB], [xcb], [have_xcb=yes], [have_xcb=no])
 PKG_CHECK_MODULES([XCB_RANDR], [xcb-randr],
 	[have_xcb_randr=yes], [have_xcb_randr=no])
 
+PKG_CHECK_MODULES([WAYLAND], [wayland-client wayland-scanner >= 1.15.0],
+	[have_wayland=yes], [have_wayland=no])
+PKG_CHECK_VAR(WAYLAND_SCANNER, wayland-scanner, wayland_scanner)
+
 PKG_CHECK_MODULES([GLIB], [glib-2.0 gobject-2.0], [have_glib=yes], [have_glib=no])
 PKG_CHECK_MODULES([GEOCLUE2], [glib-2.0 gio-2.0 >= 2.26], [have_geoclue2=yes], [have_geoclue2=no])
 
@@ -124,6 +128,30 @@ AS_IF([test "x$enable_drm" != xno], [
 ])
 AM_CONDITIONAL([ENABLE_DRM], [test "x$enable_drm" = xyes])
 
+# Check Wayland method
+AC_MSG_CHECKING([whether to enable Wayland method])
+AC_ARG_ENABLE([wayland], [AC_HELP_STRING([--enable-wayland],
+	[enable Wayland method])],
+	[enable_wayland=$enableval],[enable_wayland=maybe])
+AS_IF([test "x$enable_wayland" != xno], [
+	AS_IF([test $have_wayland = yes], [
+		AC_DEFINE([ENABLE_WAYLAND], 1,
+			[Define to 1 to enable Wayland method])
+		AC_MSG_RESULT([yes])
+		enable_wayland=yes
+	], [
+		AC_MSG_RESULT([missing dependencies])
+		AS_IF([test "x$enable_wayland" = xyes], [
+			AC_MSG_ERROR([missing dependencies for Wayland method])
+		])
+		enable_wayland=no
+	])
+], [
+	AC_MSG_RESULT([no])
+	enable_wayland=no
+])
+AM_CONDITIONAL([ENABLE_WAYLAND], [test "x$enable_wayland" = xyes])
+
 # Check RANDR method
 AC_MSG_CHECKING([whether to enable RANDR method])
 AC_ARG_ENABLE([randr], [AC_HELP_STRING([--enable-randr],
@@ -376,6 +404,7 @@ echo "
 
     Adjustment methods:
     DRM:		${enable_drm}
+    Wayland:		${enable_wayland}
     RANDR:		${enable_randr}
     VidMode:		${enable_vidmode}
     Quartz (macOS):	${enable_quartz}

po/POTFILES.in

@@ -9,6 +9,7 @@ src/options.c
 src/config-ini.c
 
 src/gamma-drm.c
+src/gamma-wl.c
 src/gamma-randr.c
 src/gamma-vidmode.c
 src/gamma-quartz.c

src/Makefile.am

@@ -23,6 +23,7 @@ redshift_SOURCES = \
 
 EXTRA_redshift_SOURCES = \
 	gamma-drm.c gamma-drm.h \
+	gamma-wl.c gamma-wl.h \
 	gamma-randr.c gamma-randr.h \
 	gamma-vidmode.c gamma-vidmode.h \
 	gamma-quartz.c gamma-quartz.h \
@@ -43,6 +44,27 @@ redshift_LDADD += \
 	$(DRM_LIBS) $(DRM_CFLAGS)
 endif
 
+if ENABLE_WAYLAND
+redshift_SOURCES += gamma-wl.c gamma-wl.h os-compatibility.c os-compatibility.h
+
+AM_CFLAGS += $(WAYLAND_CFLAGS)
+
+redshift_LDADD += \
+	$(WAYLAND_LIBS) $(WAYLAND_CFLAGS)
+
+nodist_redshift_SOURCES = \
+	gamma-control-client-protocol.h \
+	gamma-control-protocol.c \
+	orbital-authorizer-protocol.c \
+	orbital-authorizer-client-protocol.h
+
+BUILT_SOURCES = \
+	gamma-control-protocol.c \
+	gamma-control-client-protocol.h \
+	orbital-authorizer-protocol.c \
+	orbital-authorizer-client-protocol.h
+endif
+
 if ENABLE_RANDR
 redshift_SOURCES += gamma-randr.c gamma-randr.h
 AM_CFLAGS += $(XCB_CFLAGS) $(XCB_RANDR_CFLAGS)
@@ -103,3 +125,11 @@ endif
 
 .rc.o:
 	$(AM_V_GEN)$(WINDRES) -I$(top_builddir) -i $< -o $@
+
+%-protocol.c : $(srcdir)/%.xml
+	$(AM_V_GEN)$(MKDIR_P) $(dir $@) && $(WAYLAND_SCANNER) private-code < $< > $@
+
+%-client-protocol.h : $(srcdir)/%.xml
+	$(AM_V_GEN)$(MKDIR_P) $(dir $@) && $(WAYLAND_SCANNER) client-header < $< > $@
+
+CLEANFILES = *-protocol.c *-client-protocol.h

src/gamma-control.xml

@@ -0,0 +1,126 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="wlr_gamma_control_unstable_v1">
+  <copyright>
+    Copyright © 2015 Giulio camuffo
+    Copyright © 2018 Simon Ser
+
+    Permission to use, copy, modify, distribute, and sell this
+    software and its documentation for any purpose is hereby granted
+    without fee, provided that the above copyright notice appear in
+    all copies and that both that copyright notice and this permission
+    notice appear in supporting documentation, and that the name of
+    the copyright holders not be used in advertising or publicity
+    pertaining to distribution of the software without specific,
+    written prior permission.  The copyright holders make no
+    representations about the suitability of this software for any
+    purpose.  It is provided "as is" without express or implied
+    warranty.
+
+    THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+    SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+    FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+    AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+    THIS SOFTWARE.
+  </copyright>
+
+  <description summary="manage gamma tables of outputs">
+    This protocol allows a privileged client to set the gamma tables for
+    outputs.
+
+    Warning! The protocol described in this file is experimental and
+    backward incompatible changes may be made. Backward compatible changes
+    may be added together with the corresponding interface version bump.
+    Backward incompatible changes are done by bumping the version number in
+    the protocol and interface names and resetting the interface version.
+    Once the protocol is to be declared stable, the 'z' prefix and the
+    version number in the protocol and interface names are removed and the
+    interface version number is reset.
+  </description>
+
+  <interface name="zwlr_gamma_control_manager_v1" version="1">
+    <description summary="manager to create per-output gamma controls">
+      This interface is a manager that allows creating per-output gamma
+      controls.
+    </description>
+
+    <request name="get_gamma_control">
+      <description summary="get a gamma control for an output">
+        Create a gamma control that can be used to adjust gamma tables for the
+        provided output.
+      </description>
+      <arg name="id" type="new_id" interface="zwlr_gamma_control_v1"/>
+      <arg name="output" type="object" interface="wl_output"/>
+    </request>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the manager">
+        All objects created by the manager will still remain valid, until their
+        appropriate destroy request has been called.
+      </description>
+    </request>
+  </interface>
+
+  <interface name="zwlr_gamma_control_v1" version="1">
+    <description summary="adjust gamma tables for an output">
+      This interface allows a client to adjust gamma tables for a particular
+      output.
+
+      The client will receive the gamma size, and will then be able to set gamma
+      tables. At any time the compositor can send a failed event indicating that
+      this object is no longer valid.
+
+      There must always be at most one gamma control object per output, which
+      has exclusive access to this particular output. When the gamma control
+      object is destroyed, the gamma table is restored to its original value.
+    </description>
+
+    <event name="gamma_size">
+      <description summary="size of gamma ramps">
+        Advertise the size of each gamma ramp.
+
+        This event is sent immediately when the gamma control object is created.
+      </description>
+      <arg name="size" type="uint"/>
+    </event>
+
+    <enum name="error">
+      <entry name="invalid_gamma" value="1" summary="invalid gamma tables"/>
+    </enum>
+
+    <request name="set_gamma">
+      <description summary="set the gamma table">
+        Set the gamma table. The file descriptor can be memory-mapped to provide
+        the raw gamma table, which contains successive gamma ramps for the red,
+        green and blue channels. Each gamma ramp is an array of 16-byte unsigned
+        integers which has the same length as the gamma size.
+
+        The file descriptor data must have the same length as three times the
+        gamma size.
+      </description>
+      <arg name="fd" type="fd" summary="gamma table file descriptor"/>
+    </request>
+
+    <event name="failed">
+      <description summary="object no longer valid">
+        This event indicates that the gamma control is no longer valid. This
+        can happen for a number of reasons, including:
+        - The output doesn't support gamma tables
+        - Setting the gamma tables failed
+        - Another client already has exclusive gamma control for this output
+        - The compositor has transfered gamma control to another client
+
+        Upon receiving this event, the client should destroy this object.
+      </description>
+    </event>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy this control">
+        Destroys the gamma control object. If the object is still valid, this
+        restores the original gamma tables.
+      </description>
+    </request>
+  </interface>
+</protocol>