/* See LICENSE file for copyright and license details. */ #ifdef IN_LIBGAMMA_LINUX_DRM # include # include /** * Graphics card data for the Direct Rendering Manager adjustment method */ struct libgamma_drm_card_data { /** * File descriptor for the connection to the graphics card */ int fd; /** * The graphics card's mode resources */ drmModeRes *res; /** * Resources for open connectors */ drmModeConnector **connectors; /** * Resources for open encoders */ drmModeEncoder **encoders; }; #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_linux_drm_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), __warn_unused_result__))) int libgamma_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_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_linux_drm_crtc_set_gamma_ramps16(struct libgamma_crtc_state *restrict, const struct libgamma_gamma_ramps16 *restrict); #ifdef IN_LIBGAMMA_LINUX_DRM /** * Release all connectors and encoders * * @param this The graphics card data */ LIBGAMMA_GCC_ONLY__(__attribute__((__nonnull__))) void libgamma_linux_drm_internal_release_connectors_and_encoders(struct libgamma_drm_card_data *restrict); #endif