move files around

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

1 files changed, 333 insertions, 0 deletions

diff --git a/src/lib/gamma-w32-gdi.c b/src/lib/gamma-w32-gdi.c
new file mode 100644
index 0000000..f8c00ee
--- /dev/null
+++ b/src/lib/gamma-w32-gdi.c
@@ -0,0 +1,333 @@
+/**
+ * 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_W32_GDI
+# error Compiling gamma-w32-gdi.c without HAVE_LIBGAMMA_METHOD_W32_GDI
+#endif
+
+#include "gamma-w32-gdi.h"
+
+#include "libgamma-error.h"
+
+#ifndef WINVER
+# define WINVER  0x0500
+#endif
+#ifdef FAKE_LIBGAMMA_METHOD_W32_GDI
+# include "fake-w32-gdi.h"
+#else
+# include <windows.h>
+# include <wingdi.h>
+#endif
+
+#include <errno.h>
+
+#define GAMMA_RAMP_SIZE  256
+
+
+/**
+ * Return the capabilities of the adjustment method.
+ * 
+ * @param  this  The data structure to fill with the method's capabilities.
+ */
+void libgamma_w32_gdi_method_capabilities(libgamma_method_capabilities_t* restrict this)
+{
+  this->crtc_information = LIBGAMMA_CRTC_INFO_GAMMA_SIZE
+			 | LIBGAMMA_CRTC_INFO_GAMMA_DEPTH
+			 | LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT;
+  this->default_site_known = 1;
+  this->multiple_sites = 0;
+  this->multiple_partitions = 0;
+  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 = 1;
+  this->fixed_gamma_depth = 1;
+#ifdef FAKE_LIBGAMMA_METHOD_W32_GDI
+  this->fake = 1;
+# ifdef HAVE_LIBGAMMA_METHOD_X_RANDR
+  this->real = 1;
+# else
+  this->real = 0;
+# endif
+#else
+  this->fake = 0;
+  this->real = 1;
+#endif
+}
+
+
+/**
+ * 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_w32_gdi_site_initialise(libgamma_site_state_t* restrict this,
+				     char* restrict site)
+{
+  if (site != NULL)
+    return LIBGAMMA_NO_SUCH_SITE;
+  
+  this->partitions_available = 1;
+  return 0;
+}
+
+
+/**
+ * Release all resources held by a site state.
+ * 
+ * @param  this  The site state.
+ */
+void libgamma_w32_gdi_site_destroy(libgamma_site_state_t* restrict this)
+{
+  (void) this;
+}
+
+
+/**
+ * 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_w32_gdi_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_w32_gdi_partition_initialise(libgamma_partition_state_t* restrict this,
+					  libgamma_site_state_t* restrict site, size_t partition)
+{
+  DWORD n = 0;
+  DISPLAY_DEVICE display;
+  
+  (void) site;
+  
+  if (partition != 0)
+    return LIBGAMMA_NO_SUCH_PARTITION;
+  
+  /* Count CRTC:s by iteration over all possible identifiers
+     until we reach on that does not exist. */
+  display.cb = sizeof(DISPLAY_DEVICE);
+  while (EnumDisplayDevices(NULL, n, &display, 0))
+    if (n++, n == 0)
+      return LIBGAMMA_IMPOSSIBLE_AMOUNT;
+  this->crtcs_available = (size_t)n;
+  return 0;
+}
+
+
+/**
+ * Release all resources held by a partition state.
+ * 
+ * @param  this  The partition state.
+ */
+void libgamma_w32_gdi_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_w32_gdi_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_w32_gdi_crtc_initialise(libgamma_crtc_state_t* restrict this,
+				     libgamma_partition_state_t* restrict partition, size_t crtc)
+{
+  DISPLAY_DEVICE display;
+  HDC context;
+  
+  (void) partition;
+  
+  this->data = NULL;
+  
+  display.cb = sizeof(DISPLAY_DEVICE); /* Windows's API mandates this... */
+  /* Get identifier for selected CRTC. */
+  if (!EnumDisplayDevices(NULL, (DWORD)crtc, &display, 0))
+    return LIBGAMMA_NO_SUCH_CRTC;
+  /* Check that the connector is enabled,
+   * newer versions of Windows will always pass. */
+  if (!(display.StateFlags & DISPLAY_DEVICE_ACTIVE))
+    return LIBGAMMA_CONNECTOR_DISABLED;
+  /* Acquire CRTC connection. */
+  context = CreateDC(TEXT("DISPLAY"), display.DeviceName, NULL, NULL);
+  if (context == NULL)
+    return LIBGAMMA_OPEN_CRTC_FAILED;
+  this->data = context;
+  return 0;
+}
+
+
+/**
+ * Release all resources held by a CRTC state.
+ * 
+ * @param  this  The CRTC state.
+ */
+void libgamma_w32_gdi_crtc_destroy(libgamma_crtc_state_t* restrict this)
+{
+  if (this->data)
+    ReleaseDC(NULL, this->data);
+}
+
+
+/**
+ * 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_w32_gdi_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_w32_gdi_get_crtc_information(libgamma_crtc_information_t* restrict this,
+					  libgamma_crtc_state_t* restrict crtc, int32_t fields)
+{
+#define KNOWN_FIELDS  (LIBGAMMA_CRTC_INFO_GAMMA_SIZE | LIBGAMMA_CRTC_INFO_GAMMA_DEPTH | LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT)
+   
+#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->red_gamma_size = GAMMA_RAMP_SIZE;
+  this->green_gamma_size = GAMMA_RAMP_SIZE;
+  this->blue_gamma_size = GAMMA_RAMP_SIZE;
+  this->gamma_size_error = 0;
+  this->gamma_depth = 16;
+  this->gamma_depth_error = 0;
+  if ((fields & LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT))
+    this->gamma_support = GetDeviceCaps(crtc->data, COLORMGMTCAPS) == CM_GAMMA_RAMP;
+  this->gamma_support_error = 0;
+  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 & ~KNOWN_FIELDS) ? -1 : 0;
+  
+#undef  KNOWN_FIELDS
+}
+
+
+/**
+ * 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_w32_gdi_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps_t* restrict ramps)
+{
+#ifdef DEBUG
+  if ((ramps->  red_size != GAMMA_RAMP_SIZE) ||
+      (ramps->green_size != GAMMA_RAMP_SIZE) ||
+      (ramps-> blue_size != GAMMA_RAMP_SIZE))
+    return LIBGAMMA_WRONG_GAMMA_RAMP_SIZE;
+#endif
+  if (!GetDeviceGammaRamp(this->data, ramps->red))
+    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_w32_gdi_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this,
+					  libgamma_gamma_ramps_t ramps)
+{
+#ifdef DEBUG
+  if ((ramps.  red_size != GAMMA_RAMP_SIZE) ||
+      (ramps.green_size != GAMMA_RAMP_SIZE) ||
+      (ramps. blue_size != GAMMA_RAMP_SIZE))
+    return LIBGAMMA_WRONG_GAMMA_RAMP_SIZE;
+#endif
+  if (!SetDeviceGammaRamp(this->data, ramps.red))
+    return LIBGAMMA_GAMMA_RAMP_WRITE_FAILED;
+  return 0;
+}
+