m + create .c files for the adjustment methods

Signed-off-by: Mattias Andrée <maandree@operamail.com>

12 files changed, 1998 insertions, 6 deletions

diff --git a/src/gamma-dummy.c b/src/gamma-dummy.c
new file mode 100644
index 0000000..1732cf8
--- /dev/null
+++ b/src/gamma-dummy.c
@@ -0,0 +1,332 @@
+/**
+ * libgamma — Display server abstraction layer for gamma ramp adjustments
+ * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef HAVE_GAMMA_METHOD_DUMMY
+# error Compiling gamma-dummy.c without HAVE_GAMMA_METHOD_DUMMY
+#endif
+
+#include "gamma-dummy.h"
+
+#include "gamma-error.h"
+
+
+/**
+ * Return the capabilities of the adjustment method
+ * 
+ * @param  this  The data structure to fill with the method's capabilities
+ */
+void libgamma_dummy_method_capabilities(libgamma_method_capabilities_t* restrict this)
+{
+}
+
+
+/**
+ * Initialise an allocated site state
+ * 
+ * @param   this    The site state to initialise
+ * @param   site    The site identifier, unless it is `NULL` it must a
+ *                  `free`:able. One the state is destroyed the library
+ *                  will attempt to free it. There you should not free
+ *                  it yourself, and it must not be a string constant
+ *                  or allocate on the stack. Note however that it will
+ *                  not be free:d if this function fails.
+ * @return          Zero on success, otherwise (negative) the value of an
+ *                  error identifier provided by this library
+ */
+int libgamma_dummy_site_initialise(libgamma_site_state_t* restrict this,
+				   char* restrict site)
+{
+}
+
+
+/**
+ * Release all resources held by a site state
+ * 
+ * @param  this  The site state
+ */
+void libgamma_dummy_site_destroy(libgamma_site_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a site to the system settings
+ * 
+ * @param   this  The site state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_dummy_site_restore(libgamma_site_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated partition state
+ * 
+ * @param   this       The partition state to initialise
+ * @param   site       The site state for the site that the partition belongs to
+ * @param   partition  The the index of the partition within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_dummy_partition_initialise(libgamma_partition_state_t* restrict this,
+					libgamma_site_state_t* restrict site, size_t partition)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_dummy_partition_destroy(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * and free the partition state pointer
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_dummy_partition_free(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a partition to the system settings
+ * 
+ * @param   this  The partition state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_dummy_partition_restore(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated CRTC state
+ * 
+ * @param   this       The CRTC state to initialise
+ * @param   partition  The partition state for the partition that the CRTC belongs to
+ * @param   crtc       The the index of the CRTC within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_dummy_crtc_initialise(libgamma_crtc_state_t* restrict this,
+				   libgamma_partition_state_t* restrict partition, size_t crtc)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_dummy_crtc_destroy(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * and free the CRTC state pointer
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_dummy_crtc_free(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps for a CRTC to the system settings for that CRTC
+ * 
+ * @param   this  The CRTC state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_dummy_crtc_restore(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Read information about a CRTC
+ * 
+ * @param   this    Instance of a data structure to fill with the information about the CRTC
+ * @param   crtc    The state of the CRTC whose information should be read
+ * @param   fields  OR:ed identifiers for the information about the CRTC that should be read
+ * @return          Zero on success, -1 on error. On error refer to the error reports in `this`.
+ */
+int libgamma_dummy_get_crtc_information(libgamma_crtc_information_t* restrict this,
+					libgamma_crtc_state_t* restrict crtc, int32_t fields)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					libgamma_gamma_ramps_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					libgamma_gamma_ramps_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_get_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps32_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_set_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps32_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_get_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps64_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_set_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps64_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_get_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					 libgamma_gamma_rampsf_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_set_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					 libgamma_gamma_rampsf_t ramps)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_get_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					 libgamma_gamma_rampsd_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_dummy_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					 libgamma_gamma_rampsd_t ramps)
+{
+}
+
diff --git a/src/gamma-dummy.h b/src/gamma-dummy.h
index 24bffa3..e825381 100644
--- a/src/gamma-dummy.h
+++ b/src/gamma-dummy.h
@@ -20,7 +20,7 @@
 
 
 #ifndef HAVE_GAMMA_METHOD_DUMMY
-# error Compiling gamma-randr without HAVE_GAMMA_METHOD_DUMMY
+# error Including gamma-dummy.h without HAVE_GAMMA_METHOD_DUMMY
 #endif
 
 
diff --git a/src/gamma-linux-drm.c b/src/gamma-linux-drm.c
new file mode 100644
index 0000000..74e23ba
--- /dev/null
+++ b/src/gamma-linux-drm.c
@@ -0,0 +1,332 @@
+/**
+ * libgamma — Display server abstraction layer for gamma ramp adjustments
+ * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef HAVE_GAMMA_METHOD_LINUX_DRM
+# error Compiling gamma-linux-drm.c without HAVE_GAMMA_METHOD_LINUX_DRM
+#endif
+
+#include "gamma-linux-drm.h"
+
+#include "gamma-error.h"
+
+
+/**
+ * Return the capabilities of the adjustment method
+ * 
+ * @param  this  The data structure to fill with the method's capabilities
+ */
+void libgamma_linux_drm_method_capabilities(libgamma_method_capabilities_t* restrict this)
+{
+}
+
+
+/**
+ * Initialise an allocated site state
+ * 
+ * @param   this    The site state to initialise
+ * @param   site    The site identifier, unless it is `NULL` it must a
+ *                  `free`:able. One the state is destroyed the library
+ *                  will attempt to free it. There you should not free
+ *                  it yourself, and it must not be a string constant
+ *                  or allocate on the stack. Note however that it will
+ *                  not be free:d if this function fails.
+ * @return          Zero on success, otherwise (negative) the value of an
+ *                  error identifier provided by this library
+ */
+int libgamma_linux_drm_site_initialise(libgamma_site_state_t* restrict this,
+				       char* restrict site)
+{
+}
+
+
+/**
+ * Release all resources held by a site state
+ * 
+ * @param  this  The site state
+ */
+void libgamma_linux_drm_site_destroy(libgamma_site_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a site to the system settings
+ * 
+ * @param   this  The site state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_linux_drm_site_restore(libgamma_site_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated partition state
+ * 
+ * @param   this       The partition state to initialise
+ * @param   site       The site state for the site that the partition belongs to
+ * @param   partition  The the index of the partition within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_linux_drm_partition_initialise(libgamma_partition_state_t* restrict this,
+					    libgamma_site_state_t* restrict site, size_t partition)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_linux_drm_partition_destroy(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * and free the partition state pointer
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_linux_drm_partition_free(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a partition to the system settings
+ * 
+ * @param   this  The partition state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_linux_drm_partition_restore(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated CRTC state
+ * 
+ * @param   this       The CRTC state to initialise
+ * @param   partition  The partition state for the partition that the CRTC belongs to
+ * @param   crtc       The the index of the CRTC within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_initialise(libgamma_crtc_state_t* restrict this,
+				       libgamma_partition_state_t* restrict partition, size_t crtc)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_linux_drm_crtc_destroy(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * and free the CRTC state pointer
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_linux_drm_crtc_free(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps for a CRTC to the system settings for that CRTC
+ * 
+ * @param   this  The CRTC state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_restore(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Read information about a CRTC
+ * 
+ * @param   this    Instance of a data structure to fill with the information about the CRTC
+ * @param   crtc    The state of the CRTC whose information should be read
+ * @param   fields  OR:ed identifiers for the information about the CRTC that should be read
+ * @return          Zero on success, -1 on error. On error refer to the error reports in `this`.
+ */
+int libgamma_linux_drm_get_crtc_information(libgamma_crtc_information_t* restrict this,
+					    libgamma_crtc_state_t* restrict crtc, int32_t fields)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_get_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					      libgamma_gamma_ramps32_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_set_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					      libgamma_gamma_ramps32_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_get_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					      libgamma_gamma_ramps64_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_set_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					      libgamma_gamma_ramps64_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_get_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					     libgamma_gamma_rampsf_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_set_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					     libgamma_gamma_rampsf_t ramps)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_get_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					     libgamma_gamma_rampsd_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_linux_drm_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					     libgamma_gamma_rampsd_t ramps)
+{
+}
+
diff --git a/src/gamma-linux-drm.h b/src/gamma-linux-drm.h
index d8e9386..6ac5134 100644
--- a/src/gamma-linux-drm.h
+++ b/src/gamma-linux-drm.h
@@ -20,7 +20,7 @@
 
 
 #ifndef HAVE_GAMMA_METHOD_LINUX_DRM
-# error Compiling gamma-linux-drm without HAVE_GAMMA_METHOD_LINUX_DRM
+# error Including gamma-linux-drm.h without HAVE_GAMMA_METHOD_LINUX_DRM
 #endif
 
 
diff --git a/src/gamma-quartz-cg.c b/src/gamma-quartz-cg.c
new file mode 100644
index 0000000..c6cd8b8
--- /dev/null
+++ b/src/gamma-quartz-cg.c
@@ -0,0 +1,332 @@
+/**
+ * libgamma — Display server abstraction layer for gamma ramp adjustments
+ * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef HAVE_GAMMA_METHOD_QUARTZ_CORE_GRAPHICS
+# error Compiling gamma-quartz-cg.c without HAVE_GAMMA_METHOD_QUARTZ_CORE_GRAPHICS
+#endif
+
+#include "gamma-quartz-cg.h"
+
+#include "gamma-error.h"
+
+
+/**
+ * Return the capabilities of the adjustment method
+ * 
+ * @param  this  The data structure to fill with the method's capabilities
+ */
+void libgamma_quartz_cg_method_capabilities(libgamma_method_capabilities_t* restrict this)
+{
+}
+
+
+/**
+ * Initialise an allocated site state
+ * 
+ * @param   this    The site state to initialise
+ * @param   site    The site identifier, unless it is `NULL` it must a
+ *                  `free`:able. One the state is destroyed the library
+ *                  will attempt to free it. There you should not free
+ *                  it yourself, and it must not be a string constant
+ *                  or allocate on the stack. Note however that it will
+ *                  not be free:d if this function fails.
+ * @return          Zero on success, otherwise (negative) the value of an
+ *                  error identifier provided by this library
+ */
+int libgamma_quartz_cg_site_initialise(libgamma_site_state_t* restrict this,
+				       char* restrict site)
+{
+}
+
+
+/**
+ * Release all resources held by a site state
+ * 
+ * @param  this  The site state
+ */
+void libgamma_quartz_cg_site_destroy(libgamma_site_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a site to the system settings
+ * 
+ * @param   this  The site state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_quartz_cg_site_restore(libgamma_site_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated partition state
+ * 
+ * @param   this       The partition state to initialise
+ * @param   site       The site state for the site that the partition belongs to
+ * @param   partition  The the index of the partition within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_quartz_cg_partition_initialise(libgamma_partition_state_t* restrict this,
+					    libgamma_site_state_t* restrict site, size_t partition)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_quartz_cg_partition_destroy(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * and free the partition state pointer
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_quartz_cg_partition_free(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a partition to the system settings
+ * 
+ * @param   this  The partition state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_quartz_cg_partition_restore(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated CRTC state
+ * 
+ * @param   this       The CRTC state to initialise
+ * @param   partition  The partition state for the partition that the CRTC belongs to
+ * @param   crtc       The the index of the CRTC within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_initialise(libgamma_crtc_state_t* restrict this,
+				       libgamma_partition_state_t* restrict partition, size_t crtc)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_quartz_cg_crtc_destroy(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * and free the CRTC state pointer
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_quartz_cg_crtc_free(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps for a CRTC to the system settings for that CRTC
+ * 
+ * @param   this  The CRTC state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_restore(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Read information about a CRTC
+ * 
+ * @param   this    Instance of a data structure to fill with the information about the CRTC
+ * @param   crtc    The state of the CRTC whose information should be read
+ * @param   fields  OR:ed identifiers for the information about the CRTC that should be read
+ * @return          Zero on success, -1 on error. On error refer to the error reports in `this`.
+ */
+int libgamma_quartz_cg_get_crtc_information(libgamma_crtc_information_t* restrict this,
+					    libgamma_crtc_state_t* restrict crtc, int32_t fields)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_get_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					      libgamma_gamma_ramps32_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_set_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					      libgamma_gamma_ramps32_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_get_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					      libgamma_gamma_ramps64_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_set_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					      libgamma_gamma_ramps64_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_get_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					     libgamma_gamma_rampsf_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_set_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					     libgamma_gamma_rampsf_t ramps)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_get_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					     libgamma_gamma_rampsd_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_quartz_cg_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					     libgamma_gamma_rampsd_t ramps)
+{
+}
+
diff --git a/src/gamma-quartz-cg.h b/src/gamma-quartz-cg.h
index c5f8916..f5f830c 100644
--- a/src/gamma-quartz-cg.h
+++ b/src/gamma-quartz-cg.h
@@ -20,7 +20,7 @@
 
 
 #ifndef HAVE_GAMMA_METHOD_QUARTZ_CORE_GRAPHICS
-# error Compiling gamma-quartz-cg without HAVE_GAMMA_METHOD_QUARTZ_CORE_GRAPHICS
+# error Including gamma-quartz-cg.h without HAVE_GAMMA_METHOD_QUARTZ_CORE_GRAPHICS
 #endif
 
 
diff --git a/src/gamma-randr.c b/src/gamma-randr.c
new file mode 100644
index 0000000..cab1385
--- /dev/null
+++ b/src/gamma-randr.c
@@ -0,0 +1,332 @@
+/**
+ * libgamma — Display server abstraction layer for gamma ramp adjustments
+ * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef HAVE_GAMMA_METHOD_RANDR
+# error Compiling gamma-randr.c without HAVE_GAMMA_METHOD_RANDR
+#endif
+
+#include "gamma-randr.h"
+
+#include "gamma-error.h"
+
+
+/**
+ * Return the capabilities of the adjustment method
+ * 
+ * @param  this  The data structure to fill with the method's capabilities
+ */
+void libgamma_randr_method_capabilities(libgamma_method_capabilities_t* restrict this)
+{
+}
+
+
+/**
+ * Initialise an allocated site state
+ * 
+ * @param   this    The site state to initialise
+ * @param   site    The site identifier, unless it is `NULL` it must a
+ *                  `free`:able. One the state is destroyed the library
+ *                  will attempt to free it. There you should not free
+ *                  it yourself, and it must not be a string constant
+ *                  or allocate on the stack. Note however that it will
+ *                  not be free:d if this function fails.
+ * @return          Zero on success, otherwise (negative) the value of an
+ *                  error identifier provided by this library
+ */
+int libgamma_randr_site_initialise(libgamma_site_state_t* restrict this,
+				   char* restrict site)
+{
+}
+
+
+/**
+ * Release all resources held by a site state
+ * 
+ * @param  this  The site state
+ */
+void libgamma_randr_site_destroy(libgamma_site_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a site to the system settings
+ * 
+ * @param   this  The site state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_randr_site_restore(libgamma_site_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated partition state
+ * 
+ * @param   this       The partition state to initialise
+ * @param   site       The site state for the site that the partition belongs to
+ * @param   partition  The the index of the partition within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_randr_partition_initialise(libgamma_partition_state_t* restrict this,
+					libgamma_site_state_t* restrict site, size_t partition)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_randr_partition_destroy(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * and free the partition state pointer
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_randr_partition_free(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a partition to the system settings
+ * 
+ * @param   this  The partition state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_randr_partition_restore(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated CRTC state
+ * 
+ * @param   this       The CRTC state to initialise
+ * @param   partition  The partition state for the partition that the CRTC belongs to
+ * @param   crtc       The the index of the CRTC within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_randr_crtc_initialise(libgamma_crtc_state_t* restrict this,
+				   libgamma_partition_state_t* restrict partition, size_t crtc)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_randr_crtc_destroy(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * and free the CRTC state pointer
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_randr_crtc_free(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps for a CRTC to the system settings for that CRTC
+ * 
+ * @param   this  The CRTC state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_randr_crtc_restore(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Read information about a CRTC
+ * 
+ * @param   this    Instance of a data structure to fill with the information about the CRTC
+ * @param   crtc    The state of the CRTC whose information should be read
+ * @param   fields  OR:ed identifiers for the information about the CRTC that should be read
+ * @return          Zero on success, -1 on error. On error refer to the error reports in `this`.
+ */
+int libgamma_randr_get_crtc_information(libgamma_crtc_information_t* restrict this,
+					libgamma_crtc_state_t* restrict crtc, int32_t fields)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					libgamma_gamma_ramps_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					libgamma_gamma_ramps_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_get_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps32_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_set_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps32_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_get_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps64_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_set_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps64_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_get_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					 libgamma_gamma_rampsf_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_set_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					 libgamma_gamma_rampsf_t ramps)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_get_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					 libgamma_gamma_rampsd_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_randr_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					 libgamma_gamma_rampsd_t ramps)
+{
+}
+
diff --git a/src/gamma-randr.h b/src/gamma-randr.h
index 3483a5e..7d0ba9e 100644
--- a/src/gamma-randr.h
+++ b/src/gamma-randr.h
@@ -20,7 +20,7 @@
 
 
 #ifndef HAVE_GAMMA_METHOD_RANDR
-# error Compiling gamma-randr without HAVE_GAMMA_METHOD_RANDR
+# error Including gamma-randr.h without HAVE_GAMMA_METHOD_RANDR
 #endif
 
 
diff --git a/src/gamma-vidmode.c b/src/gamma-vidmode.c
new file mode 100644
index 0000000..ae74ac2
--- /dev/null
+++ b/src/gamma-vidmode.c
@@ -0,0 +1,332 @@
+/**
+ * libgamma — Display server abstraction layer for gamma ramp adjustments
+ * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef HAVE_GAMMA_METHOD_VIDMODE
+# error Compiling gamma-vidmode.c without HAVE_GAMMA_METHOD_VIDMODE
+#endif
+
+#include "gamma-vidmode.h"
+
+#include "gamma-error.h"
+
+
+/**
+ * Return the capabilities of the adjustment method
+ * 
+ * @param  this  The data structure to fill with the method's capabilities
+ */
+void libgamma_vidmode_method_capabilities(libgamma_method_capabilities_t* restrict this)
+{
+}
+
+
+/**
+ * Initialise an allocated site state
+ * 
+ * @param   this    The site state to initialise
+ * @param   site    The site identifier, unless it is `NULL` it must a
+ *                  `free`:able. One the state is destroyed the library
+ *                  will attempt to free it. There you should not free
+ *                  it yourself, and it must not be a string constant
+ *                  or allocate on the stack. Note however that it will
+ *                  not be free:d if this function fails.
+ * @return          Zero on success, otherwise (negative) the value of an
+ *                  error identifier provided by this library
+ */
+int libgamma_vidmode_site_initialise(libgamma_site_state_t* restrict this,
+				     char* restrict site)
+{
+}
+
+
+/**
+ * Release all resources held by a site state
+ * 
+ * @param  this  The site state
+ */
+void libgamma_vidmode_site_destroy(libgamma_site_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a site to the system settings
+ * 
+ * @param   this  The site state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_vidmode_site_restore(libgamma_site_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated partition state
+ * 
+ * @param   this       The partition state to initialise
+ * @param   site       The site state for the site that the partition belongs to
+ * @param   partition  The the index of the partition within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_vidmode_partition_initialise(libgamma_partition_state_t* restrict this,
+					  libgamma_site_state_t* restrict site, size_t partition)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_vidmode_partition_destroy(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * and free the partition state pointer
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_vidmode_partition_free(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a partition to the system settings
+ * 
+ * @param   this  The partition state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_vidmode_partition_restore(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated CRTC state
+ * 
+ * @param   this       The CRTC state to initialise
+ * @param   partition  The partition state for the partition that the CRTC belongs to
+ * @param   crtc       The the index of the CRTC within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_initialise(libgamma_crtc_state_t* restrict this,
+				     libgamma_partition_state_t* restrict partition, size_t crtc)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_vidmode_crtc_destroy(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * and free the CRTC state pointer
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_vidmode_crtc_free(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps for a CRTC to the system settings for that CRTC
+ * 
+ * @param   this  The CRTC state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_restore(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Read information about a CRTC
+ * 
+ * @param   this    Instance of a data structure to fill with the information about the CRTC
+ * @param   crtc    The state of the CRTC whose information should be read
+ * @param   fields  OR:ed identifiers for the information about the CRTC that should be read
+ * @return          Zero on success, -1 on error. On error refer to the error reports in `this`.
+ */
+int libgamma_vidmode_get_crtc_information(libgamma_crtc_information_t* restrict this,
+					  libgamma_crtc_state_t* restrict crtc, int32_t fields)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_get_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps32_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_set_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps32_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_get_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps64_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_set_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps64_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_get_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					   libgamma_gamma_rampsf_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_set_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					   libgamma_gamma_rampsf_t ramps)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_get_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					   libgamma_gamma_rampsd_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_vidmode_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					   libgamma_gamma_rampsd_t ramps)
+{
+}
+
diff --git a/src/gamma-vidmode.h b/src/gamma-vidmode.h
index e9db63d..5b38798 100644
--- a/src/gamma-vidmode.h
+++ b/src/gamma-vidmode.h
@@ -20,7 +20,7 @@
 
 
 #ifndef HAVE_GAMMA_METHOD_VIDMODE
-# error Compiling gamma-vidmode without HAVE_GAMMA_METHOD_VIDMODE
+# error Including gamma-vidmode.h without HAVE_GAMMA_METHOD_VIDMODE
 #endif
 
 
diff --git a/src/gamma-w32-gdi.c b/src/gamma-w32-gdi.c
new file mode 100644
index 0000000..2561aeb
--- /dev/null
+++ b/src/gamma-w32-gdi.c
@@ -0,0 +1,332 @@
+/**
+ * libgamma — Display server abstraction layer for gamma ramp adjustments
+ * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef HAVE_GAMMA_METHOD_W32_GDI
+# error Compiling gamma-w32-gdi.c without HAVE_GAMMA_METHOD_W32_GDI
+#endif
+
+#include "gamma-w32-gdi.h"
+
+#include "gamma-error.h"
+
+
+/**
+ * Return the capabilities of the adjustment method
+ * 
+ * @param  this  The data structure to fill with the method's capabilities
+ */
+void libgamma_w32_gdi_method_capabilities(libgamma_method_capabilities_t* restrict this)
+{
+}
+
+
+/**
+ * Initialise an allocated site state
+ * 
+ * @param   this    The site state to initialise
+ * @param   site    The site identifier, unless it is `NULL` it must a
+ *                  `free`:able. One the state is destroyed the library
+ *                  will attempt to free it. There you should not free
+ *                  it yourself, and it must not be a string constant
+ *                  or allocate on the stack. Note however that it will
+ *                  not be free:d if this function fails.
+ * @return          Zero on success, otherwise (negative) the value of an
+ *                  error identifier provided by this library
+ */
+int libgamma_w32_gdi_site_initialise(libgamma_site_state_t* restrict this,
+				     char* restrict site)
+{
+}
+
+
+/**
+ * Release all resources held by a site state
+ * 
+ * @param  this  The site state
+ */
+void libgamma_w32_gdi_site_destroy(libgamma_site_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a site to the system settings
+ * 
+ * @param   this  The site state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_w32_gdi_site_restore(libgamma_site_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated partition state
+ * 
+ * @param   this       The partition state to initialise
+ * @param   site       The site state for the site that the partition belongs to
+ * @param   partition  The the index of the partition within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_w32_gdi_partition_initialise(libgamma_partition_state_t* restrict this,
+					  libgamma_site_state_t* restrict site, size_t partition)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_w32_gdi_partition_destroy(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a partition state
+ * and free the partition state pointer
+ * 
+ * @param  this  The partition state
+ */
+void libgamma_w32_gdi_partition_free(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps all CRTCS with a partition to the system settings
+ * 
+ * @param   this  The partition state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_w32_gdi_partition_restore(libgamma_partition_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Initialise an allocated CRTC state
+ * 
+ * @param   this       The CRTC state to initialise
+ * @param   partition  The partition state for the partition that the CRTC belongs to
+ * @param   crtc       The the index of the CRTC within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_initialise(libgamma_crtc_state_t* restrict this,
+				     libgamma_partition_state_t* restrict partition, size_t crtc)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_w32_gdi_crtc_destroy(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Release all resources held by a CRTC state
+ * and free the CRTC state pointer
+ * 
+ * @param  this  The CRTC state
+ */
+void libgamma_w32_gdi_crtc_free(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+/**
+ * Restore the gamma ramps for a CRTC to the system settings for that CRTC
+ * 
+ * @param   this  The CRTC state
+ * @return        Zero on success, otherwise (negative) the value of an
+ *                error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_restore(libgamma_crtc_state_t* restrict this)
+{
+}
+
+
+
+/**
+ * Read information about a CRTC
+ * 
+ * @param   this    Instance of a data structure to fill with the information about the CRTC
+ * @param   crtc    The state of the CRTC whose information should be read
+ * @param   fields  OR:ed identifiers for the information about the CRTC that should be read
+ * @return          Zero on success, -1 on error. On error refer to the error reports in `this`.
+ */
+int libgamma_w32_gdi_get_crtc_information(libgamma_crtc_information_t* restrict this,
+					  libgamma_crtc_state_t* restrict crtc, int32_t fields)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 16-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_get_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps32_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 32-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_set_gamma_ramps32(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps32_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_get_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps64_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, 64-bit gamma-depth version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_set_gamma_ramps64(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps64_t ramps)
+{
+}
+
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_get_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					   libgamma_gamma_rampsf_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `float` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_set_gamma_rampsf(libgamma_crtc_state_t* restrict this,
+					   libgamma_gamma_rampsf_t ramps)
+{
+}
+
+
+/**
+ * Get current the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to fill with the current values
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_get_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					   libgamma_gamma_rampsd_t* restrict ramps)
+{
+}
+
+
+/**
+ * Set the gamma ramps for a CRTC, `double` version
+ * 
+ * @param   this   The CRTC state
+ * @param   ramps  The gamma ramps to apply
+ * @return         Zero on success, otherwise (negative) the value of an
+ *                 error identifier provided by this library
+ */
+int libgamma_w32_gdi_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this,
+					   libgamma_gamma_rampsd_t ramps)
+{
+}
+
diff --git a/src/gamma-w32-gdi.h b/src/gamma-w32-gdi.h
index d53b292..71a0a65 100644
--- a/src/gamma-w32-gdi.h
+++ b/src/gamma-w32-gdi.h
@@ -20,7 +20,7 @@
 
 
 #ifndef HAVE_GAMMA_METHOD_W32_GDI
-# error Compiling gamma-w32-gdi without HAVE_GAMMA_METHOD_W32_GDI
+# error Including gamma-w32-gdi.h without HAVE_GAMMA_METHOD_W32_GDI
 #endif