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/* See LICENSE file for copyright and license details. */
#ifdef IN_LIBGAMMA_W32_GDI
# ifndef WINVER
# define WINVER 0x0500
# endif
# ifndef FAKE_LIBGAMMA_METHOD_W32_GDI
# 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
#endif
/**
* 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(struct libgamma_method_capabilities *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(struct libgamma_site_state *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(struct libgamma_site_state *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(struct libgamma_site_state *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(struct libgamma_partition_state *restrict, struct libgamma_site_state *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(struct libgamma_partition_state *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(struct libgamma_partition_state *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(struct libgamma_crtc_state *restrict, struct libgamma_partition_state *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(struct libgamma_crtc_state *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(struct libgamma_crtc_state *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(struct libgamma_crtc_information *restrict,
struct libgamma_crtc_state *restrict, unsigned long long);
/**
* 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(struct libgamma_crtc_state *restrict, struct libgamma_gamma_ramps16 *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(struct libgamma_crtc_state *restrict, const struct libgamma_gamma_ramps16 *restrict);
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