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Diffstat (limited to '')
| -rw-r--r-- | gamma-x-vidmode.c | 312 |
1 files changed, 0 insertions, 312 deletions
diff --git a/gamma-x-vidmode.c b/gamma-x-vidmode.c deleted file mode 100644 index bae9d31..0000000 --- a/gamma-x-vidmode.c +++ /dev/null @@ -1,312 +0,0 @@ -/* See LICENSE file for copyright and license details. */ -#ifndef HAVE_LIBGAMMA_METHOD_X_VIDMODE -# error Compiling gamma-x-vidmode.c without HAVE_LIBGAMMA_METHOD_X_VIDMODE -#endif - -#include "gamma-x-vidmode.h" - -#include "libgamma-error.h" - -#include <X11/Xlib.h> -#include <X11/extensions/xf86vmode.h> - -#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_x_vidmode_method_capabilities(libgamma_method_capabilities_t *restrict this) -{ - char *restrict display = getenv("DISPLAY"); - /* Gamma ramps size and depth can be queried */ - this->crtc_information = LIBGAMMA_CRTC_INFO_GAMMA_SIZE | LIBGAMMA_CRTC_INFO_GAMMA_DEPTH; - /* X VidMode supports multiple sites and partitions but not CRTC:s */ - this->default_site_known = (display && *display) ? 1 : 0; - this->multiple_sites = 1; - this->multiple_partitions = 1; - this->multiple_crtcs = 0; - /* Partitions are screens and not graphics cards in X */ - this->partitions_are_graphics_cards = 0; - /* X does not have system restore capabilities */ - this->site_restore = 0; - this->partition_restore = 0; - this->crtc_restore = 0; - /* Gamma ramp sizes are identical but not fixed */ - this->identical_gamma_sizes = 1; - this->fixed_gamma_size = 0; - /* Gamma ramp depths are fixed */ - this->fixed_gamma_depth = 1; - /* X VidMode is a real non-faked adjustment method */ - this->real = 1; - this->fake = 0; - /* Gamma ramp adjustments are persistent */ - this->auto_restore = 0; -} - - -/** - * 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_x_vidmode_site_initialise(libgamma_site_state_t *restrict this, char *restrict site) -{ - /* Connect to the display */ - Display *restrict connection; - int _major, _minor, screens; - this->data = connection = XOpenDisplay(site); - if (!this->data) - return LIBGAMMA_OPEN_SITE_FAILED; - /* Query X VidMode extension protocol version */ - if (!XF86VidModeQueryVersion(connection, &_major, &_minor)) { - XCloseDisplay(connection); - return LIBGAMMA_PROTOCOL_VERSION_QUERY_FAILED; - } - /* Query the number of available screens */ - screens = ScreenCount(connection); - if (screens < 0) { - XCloseDisplay(connection); - return LIBGAMMA_NEGATIVE_PARTITION_COUNT; - } - this->partitions_available = (size_t)screens; - return 0; -} - - -/** - * Release all resources held by a site state - * - * @param this The site state - */ -void -libgamma_x_vidmode_site_destroy(libgamma_site_state_t *restrict this) -{ - XCloseDisplay((Display *)this->data); -} - - -/** - * 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_x_vidmode_site_restore(libgamma_site_state_t *restrict this) -{ - (void) this; - errno = ENOTSUP; - return LIBGAMMA_ERRNO_SET; -} - - - -/** - * 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_x_vidmode_partition_initialise(libgamma_partition_state_t *restrict this, - libgamma_site_state_t *restrict site, size_t partition) -{ - this->crtcs_available = 1; - return partition < site->partitions_available ? 0 : LIBGAMMA_NO_SUCH_PARTITION; -} - - -/** - * Release all resources held by a partition state - * - * @param this The partition state - */ -void -libgamma_x_vidmode_partition_destroy(libgamma_partition_state_t *restrict this) -{ - (void) this; -} - - -/** - * 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_x_vidmode_partition_restore(libgamma_partition_state_t *restrict this) -{ - (void) this; - errno = ENOTSUP; - return LIBGAMMA_ERRNO_SET; -} - - - -/** - * 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_x_vidmode_crtc_initialise(libgamma_crtc_state_t *restrict this, - libgamma_partition_state_t *restrict partition, size_t crtc) -{ - (void) this; - (void) partition; - return !crtc ? 0 : LIBGAMMA_NO_SUCH_CRTC; -} - - -/** - * Release all resources held by a CRTC state - * - * @param this The CRTC state - */ -void -libgamma_x_vidmode_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_x_vidmode_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; oOn error refer to the error reports in `this` - */ -int -libgamma_x_vidmode_get_crtc_information(libgamma_crtc_information_t *restrict this, - libgamma_crtc_state_t *restrict crtc, int32_t fields) -{ -#define _E(FIELD) ((fields & FIELD) ? LIBGAMMA_CRTC_INFO_NOT_SUPPORTED : 0) - - Display *restrict connection; - int stops = 0; - - /* X VidMode 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); - this->gamma_size_error = 0; - /* X VidMode does support gamma ramp size query. The gamma - ramps are identical but not fixed, and the query can fail. */ - if ((fields & LIBGAMMA_CRTC_INFO_GAMMA_SIZE)) { - connection = crtc->partition->site->data; - if (!XF86VidModeGetGammaRampSize(connection, (int)crtc->partition->partition, &stops)) - this->gamma_size_error = LIBGAMMA_GAMMA_RAMPS_SIZE_QUERY_FAILED; - else if (stops < 2) - this->gamma_size_error = LIBGAMMA_SINGLETON_GAMMA_RAMP; - this->red_gamma_size = this->green_gamma_size = this->blue_gamma_size = (size_t)stops; - } - /* X VidMode uses 16-bit integer ramps */ - this->gamma_depth = 16; - this->gamma_depth_error = 0; - /* X VidMode does not support gamma ramp support queries */ - this->gamma_support_error = _E(LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT); - /* X VidMode 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 & ~(LIBGAMMA_CRTC_INFO_GAMMA_DEPTH | LIBGAMMA_CRTC_INFO_GAMMA_SIZE))) ? -1 : 0; - -#undef _E -} - - -/** - * 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 - */ -int -libgamma_x_vidmode_crtc_get_gamma_ramps16(libgamma_crtc_state_t *restrict this, libgamma_gamma_ramps16_t *restrict ramps) -{ -#ifdef DEBUG - /* Gamma ramp 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 */ - if (!XF86VidModeGetGammaRamp((Display *)this->partition->site->data, (int)this->partition->partition, - (int)ramps->red_size, ramps->red, ramps->green, ramps->blue)) - return LIBGAMMA_GAMMA_RAMP_READ_FAILED; - return 0; -} - - -/** - * 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_x_vidmode_crtc_set_gamma_ramps16(libgamma_crtc_state_t *restrict this, libgamma_gamma_ramps16_t ramps) -{ -#ifdef DEBUG - /* Gamma ramp 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 */ - if (!XF86VidModeSetGammaRamp((Display *)this->partition->site->data, (int)this->partition->partition, - (int)ramps.red_size, ramps.red, ramps.green, ramps.blue)) - return LIBGAMMA_GAMMA_RAMP_WRITE_FAILED; - return 0; -} |