diff options
Diffstat (limited to 'gamma-quartz-cg.c')
| -rw-r--r-- | gamma-quartz-cg.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/gamma-quartz-cg.c b/gamma-quartz-cg.c deleted file mode 100644 index b0e3a29..0000000 --- a/gamma-quartz-cg.c +++ /dev/null @@ -1,359 +0,0 @@ -/* See LICENSE file for copyright and license details. */ -#ifndef HAVE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS -# error Compiling gamma-quartz-cg.c without HAVE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS -#endif - -#include "gamma-quartz-cg.h" - -#include "libgamma-error.h" - -#ifdef FAKE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS -# include "fake-quartz-cg.h" -#else -# include <ApplicationServices/ApplicationServices.h> -# include <CoreGraphics/CGDirectDisplay.h> -# define close_fake_quartz_cg() /* For compatibility with "fake-quartz-cg.h" */ -#endif - -#include <stdlib.h> -#include <errno.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) -{ - /* Gamma ramps size and depth can be queried */ - this->crtc_information = LIBGAMMA_CRTC_INFO_GAMMA_SIZE | LIBGAMMA_CRTC_INFO_GAMMA_DEPTH; - /* Quartz/CoreGraphics does not support sites or partitions */ - this->default_site_known = 1; - this->multiple_sites = 0; - this->multiple_partitions = 0; - /* Quartz/CoreGraphics does support CRTC:s */ - this->multiple_crtcs = 1; - /* Partitions are not supported... */ - this->partitions_are_graphics_cards = 0; - /* CoreGraphics have support for system restore */ - this->site_restore = 1; - this->partition_restore = 1; - /* But not for individual CRTC:s */ - this->crtc_restore = 0; - /* Gamma ramp sizes are identifical but not fixed */ - this->identical_gamma_sizes = 1; - this->fixed_gamma_size = 0; - /* Gamma ramp depths are fixed */ - this->fixed_gamma_depth = 1; - /* Quartz/CoreGraphics is a real adjustment method that can be faked */ -#ifdef FAKE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS - /* It is considered real but fake if it is translated to X RandR */ - this->fake = 1; -# ifdef HAVE_LIBGAMMA_METHOD_X_RANDR - this->real = 1; -# else - this->real = 0; -# endif -#else - /* It is real and not fake if we are running on Mac OS X */ - this->fake = 0; - this->real = 1; -#endif - /* Gamma ramp adjustments are non-persistent */ - this->auto_restore = 1; -} - - -/** - * 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 - */ -int -libgamma_quartz_cg_site_initialise(libgamma_site_state_t *restrict this, char *restrict site) -{ - this->partitions_available = 1; - return site ? 0 : LIBGAMMA_NO_SUCH_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) -{ - (void) this; - close_fake_quartz_cg(); -} - - -/** - * 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 - */ -int -libgamma_quartz_cg_site_restore(libgamma_site_state_t *restrict this) -{ - (void) this; - CGDisplayRestoreColorSyncSettings(); - return 0; -} - - - -/** - * 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) -{ - CGDirectDisplayID *crtcs, *crtcs_old; - uint32_t cap = 4, n; - - (void) site; - - this->data = NULL; - - if (partition) - return LIBGAMMA_NO_SUCH_PARTITION; - - /* Allocate array of CRTC ID:s */ - crtcs = malloc((size_t)cap * sizeof(CGDirectDisplayID)); - if (!crtcs) - return LIBGAMMA_ERRNO_SET; - - /* It is not possible to ask CoreGraphics how many CRTC:s are - * available. We have to ask it to give us a ID:s of a number - * of CRTC:s and ask for more if we got as many as we asked for. */ - for (;;) { - /* Ask for CRTC ID:s */ - if (CGGetOnlineDisplayList(cap, crtcs, &n) != kCGErrorSuccess) - return free(crtcs), LIBGAMMA_LIST_CRTCS_FAILED; - /* If we did not get as many as we asked for then we have all */ - if (n < cap) - break; - /* Increase the number CRTC ID:s to ask for */ - if (cap > SIZE_MAX / 2) /* We could also test ~0, but it is still too many */ - return free(crtcs), LIBGAMMA_IMPOSSIBLE_AMOUNT; - cap <<= 1; - /* Grow the array of CRTC ID:s so that it can fit all we are asking for */ - crtcs = realloc(crtcs_old = crtcs, (size_t)cap * sizeof(CGDirectDisplayID)); - if (!crtcs) { - free(crtcs_old); - return LIBGAMMA_ERRNO_SET; - } - } - - /* Store CRTC ID:s and CRTC count */ - this->data = crtcs; - this->crtcs_available = (size_t)n; - return 0; -} - - -/** - * 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) -{ - free(this->data); -} - - -/** - * 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 - */ -int -libgamma_quartz_cg_partition_restore(libgamma_partition_state_t *restrict this) -{ - return libgamma_quartz_cg_site_restore(this->site); -} - - - -/** - * 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) -{ - (void) this; - return crtc < partition->crtcs_available ? 0 : LIBGAMMA_NO_SUCH_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) -{ - (void) 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) -{ - (void) this; - errno = ENOTSUP; - return LIBGAMMA_ERRNO_SET; -} - - - -/** - * 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) -{ -#define SUPPORTED_FIELDS (LIBGAMMA_CRTC_INFO_GAMMA_SIZE | LIBGAMMA_CRTC_INFO_GAMMA_DEPTH) -#define _E(FIELD) ((fields & FIELD) ? LIBGAMMA_CRTC_INFO_NOT_SUPPORTED : 0) - - CGDirectDisplayID *restrict crtcs; - size_t gamma_size; - - /* Quartz/CoreGraphics does not support EDID or monitor dimensions */ - this->edid_error = _E(LIBGAMMA_CRTC_INFO_EDID); - this->width_mm_error = _E(LIBGAMMA_CRTC_INFO_WIDTH_MM); - this->height_mm_error = _E(LIBGAMMA_CRTC_INFO_HEIGHT_MM); - this->width_mm_edid_error = _E(LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID); - this->height_mm_edid_error = _E(LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID); - /* Quartz/CoreGraphics does support gamma ramp size query - The gamma ramps are identical but not fixed, and the query can fail */ - this->gamma_size_error = 0; - if ((fields & LIBGAMMA_CRTC_INFO_GAMMA_SIZE)) { - crtcs = crtc->partition->data; - gamma_size = CGDisplayGammaTableCapacity(crtcs[crtc->crtc]); - this->red_gamma_size = this->green_gamma_size = this->blue_gamma_size = (size_t)gamma_size; - this->gamma_size_error = gamma_size < 2 ? LIBGAMMA_SINGLETON_GAMMA_RAMP : 0; - } - /* Quartz/CoreGraphics uses `float` ramps */ - this->gamma_depth = -1; - this->gamma_depth_error = 0; - /* Quartz/CoreGraphics does not support gamma ramp support queries */ - this->gamma_support_error = _E(LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT); - /* Quartz/CoreGraphics does not support EDID or connector information */ - this->subpixel_order_error = _E(LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER); - this->active_error = _E(LIBGAMMA_CRTC_INFO_ACTIVE); - this->connector_name_error = _E(LIBGAMMA_CRTC_INFO_CONNECTOR_NAME); - this->connector_type_error = _E(LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE); - this->gamma_error = _E(LIBGAMMA_CRTC_INFO_GAMMA); - - /* We failed if gamma ramp size query failed or if an unsupport field was queried */ - return (this->gamma_size_error || (fields & ~SUPPORTED_FIELDS)) ? -1 : 0; - -#undef _E -#undef SUPPORTED_FIELDS -} - - -/** - * Get the current 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) -{ - CGDirectDisplayID *restrict crtcs = this->partition->data; - CGDirectDisplayID crtc_id = crtcs[this->crtc]; - uint32_t gamma_size_out; - CGError r; -#ifdef DEBUG - /* Gamma ramps sizes are identical but not fixed */ - if (ramps->red_size != ramps->green_size || ramps->red_size != ramps->blue_size) - return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE; -#endif - /* Read current gamma ramps */ - r = CGGetDisplayTransferByTable(crtc_id, (uint32_t)ramps->red_size, ramps->red, ramps->green, ramps->blue, &gamma_size_out); - if (r != kCGErrorSuccess) - return LIBGAMMA_GAMMA_RAMP_READ_FAILED; - /* I hope that it will not actually ever change, - but it does return the the gamma ramp size despite - that it can be queried without querying for more */ - if (gamma_size_out != ramps->red_size) - return LIBGAMMA_GAMMA_RAMP_SIZE_CHANGED; - return 0; -} - - -/** - * 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) -{ - CGDirectDisplayID *restrict crtcs = this->partition->data; - CGDirectDisplayID crtc_id = crtcs[this->crtc]; - CGError r; -#ifdef DEBUG - /* Gamma ramps sizes are identical but not fixed */ - if (ramps.red_size != ramps.green_size || ramps.red_size != ramps.blue_size) - return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE; -#endif - /* Apply gamma ramps */ - r = CGSetDisplayTransferByTable(crtc_id, (uint32_t)ramps.red_size, ramps.red, ramps.green, ramps.blue); - return r == kCGErrorSuccess ? 0 : LIBGAMMA_GAMMA_RAMP_WRITE_FAILED; -} |