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-rw-r--r--method-w32-gdi.h159
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diff --git a/method-w32-gdi.h b/method-w32-gdi.h
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+/* See LICENSE file for copyright and license details. */
+
+#ifndef WINVER
+# define WINVER 0x0500
+#endif
+#ifdef FAKE_LIBGAMMA_METHOD_W32_GDI
+# include "fake-w32-gdi.h"
+#else
+# include <windows.h>
+# include <wingdi.h>
+#endif
+
+
+/**
+ * The gamma ramp size that devices will always have in Windows GDI
+ *
+ * @see http://msdn.microsoft.com/en-us/library/windows/desktop/dd372194(v=vs.85).aspx
+ */
+#define W32_GDI_GAMMA_RAMP_SIZE 256
+
+
+
+/**
+ * Return the capabilities of the adjustment method
+ *
+ * @param this The data structure to fill with the method's capabilities
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__)))
+void libgamma_w32_gdi_method_capabilities(libgamma_method_capabilities_t *restrict);
+
+/**
+ * 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. Once 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
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__(1)))
+int libgamma_w32_gdi_site_initialise(libgamma_site_state_t *restrict, char *restrict);
+
+/**
+ * Release all resources held by a site state
+ *
+ * @param this The site state
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__)))
+void libgamma_w32_gdi_site_destroy(libgamma_site_state_t *restrict);
+
+/**
+ * Restore the gamma ramps all CRTC:s 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
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__, __warn_unused_result__)))
+int libgamma_w32_gdi_site_restore(libgamma_site_state_t *restrict);
+
+
+/**
+ * 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
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__, __warn_unused_result__)))
+int libgamma_w32_gdi_partition_initialise(libgamma_partition_state_t *restrict, libgamma_site_state_t *restrict, size_t);
+
+/**
+ * Release all resources held by a partition state
+ *
+ * @param this The partition state
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__)))
+void libgamma_w32_gdi_partition_destroy(libgamma_partition_state_t *restrict);
+
+/**
+ * Restore the gamma ramps all CRTC:s 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
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__, __warn_unused_result__)))
+int libgamma_w32_gdi_partition_restore(libgamma_partition_state_t *restrict);
+
+
+/**
+ * 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
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__, __warn_unused_result__)))
+int libgamma_w32_gdi_crtc_initialise(libgamma_crtc_state_t *restrict, libgamma_partition_state_t *restrict, size_t);
+
+/**
+ * Release all resources held by a CRTC state
+ *
+ * @param this The CRTC state
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__)))
+void libgamma_w32_gdi_crtc_destroy(libgamma_crtc_state_t *restrict);
+
+/**
+ * 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
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__, __warn_unused_result__)))
+int libgamma_w32_gdi_crtc_restore(libgamma_crtc_state_t *restrict);
+
+
+/**
+ * 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`
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__, __warn_unused_result__)))
+int libgamma_w32_gdi_get_crtc_information(libgamma_crtc_information_t *restrict, libgamma_crtc_state_t *restrict, int32_t);
+
+/**
+ * Get the current 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
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__, __warn_unused_result__)))
+int libgamma_w32_gdi_crtc_get_gamma_ramps16(libgamma_crtc_state_t *restrict, libgamma_gamma_ramps16_t *restrict);
+
+/**
+ * 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
+ */
+LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__, __warn_unused_result__)))
+int libgamma_w32_gdi_crtc_set_gamma_ramps16(libgamma_crtc_state_t *restrict, const libgamma_gamma_ramps16_t *restrict);