move files around

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 292 insertions, 0 deletions

diff --git a/src/lib/gamma-x-vidmode.c b/src/lib/gamma-x-vidmode.c
new file mode 100644
index 0000000..a73f36f
--- /dev/null
+++ b/src/lib/gamma-x-vidmode.c
@@ -0,0 +1,292 @@
+/**
+ * libgamma — Display server abstraction layer for gamma ramp adjustments
+ * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#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");
+  this->crtc_information = LIBGAMMA_CRTC_INFO_GAMMA_SIZE
+			 | LIBGAMMA_CRTC_INFO_GAMMA_DEPTH;
+  this->default_site_known = (display && *display);
+  this->multiple_sites = 1;
+  this->multiple_partitions = 1;
+  this->multiple_crtcs = 1;
+  this->partitions_are_graphics_cards = 0;
+  this->site_restore = 0;
+  this->partition_restore = 0;
+  this->crtc_restore = 0;
+  this->identical_gamma_sizes = 1;
+  this->fixed_gamma_size = 0;
+  this->fixed_gamma_depth = 1;
+  this->real = 1;
+  this->fake = 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. One 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)
+{
+  Display* restrict connection = XOpenDisplay(site);
+  int _major, _minor, screens;
+  if ((this->data = connection) == NULL)
+    return LIBGAMMA_OPEN_SITE_FAILED;
+  if (!XF86VidModeQueryVersion(connection, &_major, &_minor))
+    return LIBGAMMA_PROTOCOL_VERSION_QUERY_FAILED;
+  if ((screens = ScreenCount(connection)) < 0)
+    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;
+  return errno = ENOTSUP, 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)
+{
+  if (partition >= site->partitions_available)
+    return LIBGAMMA_NO_SUCH_PARTITION;
+  this->crtcs_available = 1;
+  return 0;
+}
+
+
+/**
+ * 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;
+  return errno = ENOTSUP, 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 ? 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;
+  return errno = ENOTSUP, 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_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)
+  
+  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;
+  if ((fields & LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT))
+    {
+      Display* restrict connection = crtc->partition->site->data;
+      int stops;
+      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;
+      else
+	this->red_gamma_size = this->green_gamma_size = this->blue_gamma_size = (size_t)stops;
+    }
+  this->gamma_depth = 16;
+  this->gamma_depth_error = 0;
+  this->gamma_support_error = _E(LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT);
+  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);
+  
+#undef _E
+  
+  return (fields & ~(LIBGAMMA_CRTC_INFO_GAMMA_DEPTH | LIBGAMMA_CRTC_INFO_GAMMA_SIZE)) ? -1 : this->gamma_size_error;
+}
+
+
+/**
+ * Get current the 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_ramps(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps_t* restrict ramps)
+{
+#ifdef DEBUG
+  if ((ramps->red_size != ramps->green_size) ||
+      (ramps->red_size != ramps->blue_size))
+    return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE;
+#endif
+  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_ramps(libgamma_crtc_state_t* restrict this,
+					    libgamma_gamma_ramps_t ramps)
+{
+#ifdef DEBUG
+  if ((ramps.red_size != ramps.green_size) ||
+      (ramps.red_size != ramps.blue_size))
+    return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE;
+#endif
+  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;
+}
+