dummy method: set and get gamma ramps

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

1 files changed, 0 insertions, 894 deletions

diff --git a/src/lib/gamma-dummy.c b/src/lib/gamma-dummy.c
deleted file mode 100644
index 3b047a3..0000000
--- a/src/lib/gamma-dummy.c
+++ /dev/null
@@ -1,894 +0,0 @@
-/**
- * libgamma -- Display server abstraction layer for gamma ramp adjustments
- * Copyright (C) 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_DUMMY
-# error Compiling gamma-dummy.c without HAVE_LIBGAMMA_METHOD_DUMMY
-#endif
-
-#include "gamma-dummy.h"
-
-#include "libgamma-error.h"
-#include "libgamma-method.h"
-#include "edid.h"
-
-#include <errno.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-
-
-/**
- * Configuration set for the dummy adjustment method.
- */
-typedef struct libgamma_dummy_configurations
-{
-  /**
-   * The method's capabilities.
-   * 
-   * Some fields are ignored:
-   * - real
-   * - fake
-   */
-  libgamma_method_capabilities_t capabilities;
-  
-  /**
-   * Template for CRTC:s information.
-   * 
-   * Some fields are ignored:
-   * - width_mm_edid
-   * - width_mm_edid_error
-   * - height_mm_edid
-   * - height_mm_edid_error
-   * - gamma_red
-   * - gamma_green
-   * - gamma_blue
-   * - gamma_error
-   */
-  libgamma_crtc_information_t crtc_info_template;
-  
-  /**
-   * The adjustment method to use.
-   */
-  int real_method;
-  
-  /**
-   * The number of sites on the system.
-   */
-  size_t site_count;
-  
-  /**
-   * The number of paritions on a site before it has been configured.
-   */
-  size_t default_partition_count;
-  
-  /**
-   * The number of CRTC:s on a paritions before it has been configured.
-   */
-  size_t default_crtc_count;
-  
-  /**
-   * Whether the sites should be inherited from the real method.
-   */
-  unsigned inherit_sites : 1;
-  
-  /**
-   * Whether the partitions should be inherited from the real method.
-   */
-  unsigned inherit_partition_count : 1;
-  
-  /**
-   * Whether the CRTC:s should be inherited from the real method.
-   */
-  unsigned inherit_crtc_count : 1;
-  
-  /**
-   * When a site has been created, stall until the partition count has
-   * been configured.
-   */
-  unsigned stall_for_partition_count : 1;
-  
-  /**
-   * When a parition has been created, stall until the CRTC count has
-   * been configured.
-   */
-  unsigned stall_for_crtc_count : 1;
-  
-  /**
-   * Methods should stall until the system has been configured
-   * unless $LIBGAMMA_DUMMY_STALL is not true.
-   */
-  unsigned stalled_start : 1;
-  
-  /**
-   * Whether to print what is going on in the phony system.
-   */
-  unsigned verbose : 1;
-  
-} libgamma_dummy_configurations_t;
-
-
-/**
- * Dummy adjustment method internal data for a CRTC.
- */
-typedef struct libgamma_dummy_crtc
-{
-  /**
-   * The gamma ramp for the red channel.
-   */
-  void* restrict gamma_red;
-  
-  /**
-   * The gamma ramp for the green channel.
-   */
-  void* restrict gamma_green;
-  
-  /**
-   * The gamma ramp for the blue channel.
-   */
-  void* restrict gamma_blue;
-  
-  /**
-   * Information about the CRTC and monitor.
-   * 
-   * Some fields are ignored:
-   * - width_mm_edid
-   * - width_mm_edid_error
-   * - height_mm_edid
-   * - height_mm_edid_error
-   * - gamma_red
-   * - gamma_green
-   * - gamma_blue
-   * - gamma_error
-   */
-  libgamma_crtc_information_t info;
-  
-  /**
-   * Partition state that contains this information.
-   */
-  libgamma_crtc_state_t* state;
-  
-} libgamma_dummy_crtc_t;
-
-
-/**
- * Dummy adjustment method internal data for a partition.
- */
-typedef struct libgamma_dummy_partition
-{
-  /**
-   * The CRTC:s on the system.
-   */
-  libgamma_dummy_crtc_t* crtcs;
-  
-  /**
-   * The number of CRTC:s on the system.
-   */
-  size_t crtc_count;
-  
-  /**
-   * Partition state that contains this information.
-   */
-  libgamma_partition_state_t* state;
-  
-} libgamma_dummy_partition_t;
-
-
-/**
- * Dummy adjustment method internal data for a site.
- */
-typedef struct libgamma_dummy_site
-{
-  /**
-   * The partitions on the system.
-   */
-  libgamma_dummy_partition_t* partitions;
-  
-  /**
-   * The number of partitions on the system.
-   */
-  size_t partition_count;
-  
-  /**
-   * Site state that contains this information.
-   */
-  libgamma_site_state_t* state;
-  
-} libgamma_dummy_site_t;
-
-
-
-/**
- * Restore the gamma ramps for a CRTC to the system settings for that CRTC
- * and ignore the method's capabilities.
- * 
- * @param   this  The CRTC data
- * @return        Zero on success, otherwise (negative) the value of an
- *                error identifier provided by this library.
- */
-static int libgamma_dummy_crtc_restore_forced(libgamma_dummy_crtc_t* restrict data);
-
-
-
-/**
- * Configurations for the dummy adjustment method.
- */
-static libgamma_dummy_configurations_t libgamma_dummy_configurations =
-  {
-    .capabilities =
-      {
-	.crtc_information = (1 << LIBGAMMA_CRTC_INFO_COUNT) - 1,
-	.default_site_known = 1,
-	.multiple_sites = 1,
-	.multiple_partitions = 1,
-	.multiple_crtcs = 1,
-	.partitions_are_graphics_cards = 1,
-	.site_restore = 1,
-	.partition_restore = 1,
-	.crtc_restore = 1,
-	.identical_gamma_sizes = 0,
-	.fixed_gamma_size = 0,
-	.fixed_gamma_depth = 0,
-      },
-    .crtc_info_template =
-      {
-	.edid = NULL,
-	.edid_length = 0,
-	.edid_error = LIBGAMMA_EDID_NOT_FOUND,
-	.width_mm = 400,
-	.width_mm_error = 0,
-	.height_mm = 300,
-	.height_mm_error = 0,
-	.red_gamma_size = 1024,
-	.green_gamma_size = 2048,
-	.blue_gamma_size = 512,
-	.gamma_size_error = 0,
-	.gamma_depth = 64,
-	.gamma_depth_error = 0,
-	.gamma_support = 1,
-	.gamma_support_error = 0,
-	.subpixel_order = LIBGAMMA_SUBPIXEL_ORDER_HORIZONTAL_RGB,
-	.subpixel_order_error = 0,
-	.active = 1,
-	.active_error = 0,
-	.connector_name = NULL,
-	.connector_name_error = LIBGAMMA_CONNECTOR_TYPE_NOT_RECOGNISED,
-	.connector_type = LIBGAMMA_CONNECTOR_TYPE_Unknown,
-	.connector_type_error = 0,
-      },
-    .real_method = LIBGAMMA_METHOD_DUMMY,
-    .site_count = 2,
-    .default_partition_count = 2,
-    .default_crtc_count = 2,
-    .inherit_sites = 1,
-    .inherit_partition_count = 1,
-    .inherit_crtc_count = 1,
-    .stall_for_partition_count = 0,
-    .stall_for_crtc_count = 0,
-    .stalled_start = 1,
-    .verbose = 0
-  };
-
-
-
-/**
- * Return the capabilities of the adjustment method.
- * 
- * @param  this  The data structure to fill with the method's capabilities.
- */
-void libgamma_dummy_method_capabilities(libgamma_method_capabilities_t* restrict this)
-{
-  *this = libgamma_dummy_configurations.capabilities;
-  this->real = libgamma_dummy_configurations.real_method != LIBGAMMA_METHOD_DUMMY;
-  this->fake = this->real;
-}
-
-
-/**
- * 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_dummy_site_initialise(libgamma_site_state_t* restrict this,
-				   char* restrict site)
-{
-  libgamma_dummy_site_t* data = NULL;
-  size_t i, sites, crtcs;
-  
-  sites = libgamma_dummy_configurations.site_count;
-  if (libgamma_dummy_configurations.capabilities.multiple_sites == 0)
-    sites = sites == 0 ? 0 : 1;
-  this->data = NULL;
-  
-  if ((site != NULL) && (*site) && ((atoll(site) < 0) || (sites <= (unsigned long long)atoll(site))))
-    return LIBGAMMA_NO_SUCH_SITE;
-  
-  data = malloc(sizeof(libgamma_dummy_site_t));
-  if (data == NULL)
-    goto fail;
-  
-  this->data = data;
-  data->state = this;
-  
-  data->partition_count = libgamma_dummy_configurations.default_partition_count;
-  if (libgamma_dummy_configurations.capabilities.multiple_partitions == 0)
-    data->partition_count = data->partition_count == 0 ? 0 : 1;
-  
-  crtcs = libgamma_dummy_configurations.default_crtc_count;
-  if (libgamma_dummy_configurations.capabilities.multiple_crtcs == 0)
-    crtcs = crtcs == 0 ? 0 : 1;
-  
-  data->partitions = malloc(data->partition_count * sizeof(libgamma_dummy_partition_t));
-  if (data->partitions == NULL)
-    goto fail;
-  
-  for (i = 0; i < data->partition_count; i++)
-    data->partitions[i].crtc_count = crtcs;
-  
-  return 0;
-  
- fail:
-  free(data);
-  this->data = NULL;
-  return LIBGAMMA_ERRNO_SET;
-}
-
-
-/**
- * Release all resources held by a site state.
- * 
- * @param  this  The site state.
- */
-void libgamma_dummy_site_destroy(libgamma_site_state_t* restrict this)
-{
-  libgamma_dummy_site_t* data = this->data;
-  if (data == NULL)
-    return;
-  
-  free(data->partitions);
-  free(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_dummy_site_restore(libgamma_site_state_t* restrict this)
-{
-  libgamma_dummy_site_t* data = this->data;
-  size_t i, j;
-  
-  if (libgamma_dummy_configurations.capabilities.site_restore == 0)
-    return errno = ENOTSUP, LIBGAMMA_ERRNO_SET;
-  
-  for (j = 0; j < data->partition_count; j++)
-    for (i = 0; i < data->partitions[j].crtc_count; i++)
-      if (libgamma_dummy_crtc_restore_forced(data->partitions[j].crtcs + i) < 0)
-	return -1;
-  
-  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_dummy_partition_initialise(libgamma_partition_state_t* restrict this,
-					libgamma_site_state_t* restrict site, size_t partition)
-{
-  libgamma_crtc_information_t template = libgamma_dummy_configurations.crtc_info_template;
-  libgamma_dummy_site_t* site_data = site->data;
-  libgamma_dummy_partition_t* data = site_data->partitions + partition;
-  libgamma_dummy_crtc_t* crtc_data;
-  size_t i;
-  
-  this->data = NULL;
-  
-  if (partition >= site_data->partition_count)
-    return LIBGAMMA_NO_SUCH_PARTITION;
-  
-  this->data = data;
-  data->state = this;
-  
-  data->crtcs = calloc(data->crtc_count, sizeof(libgamma_dummy_crtc_t));
-  if (data->crtcs == NULL)
-    goto fail;
-  for (i = 0; i < data->crtc_count; i++)
-    {
-      crtc_data = data->crtcs + i;
-      crtc_data->info = template;
-      
-      /* Duplicate strings. */
-      if (crtc_data->info.edid != NULL)
-	{
-	  crtc_data->info.edid = malloc(crtc_data->info.edid_length * sizeof(char));
-	  if (crtc_data->info.edid == NULL)
-	    goto fail;
-	  memcpy(crtc_data->info.edid, template.edid, crtc_data->info.edid_length * sizeof(char));
-	}
-      if (crtc_data->info.connector_name != NULL)
-	{
-	  size_t n = strlen(crtc_data->info.connector_name);
-	  crtc_data->info.connector_name = malloc((n + 1) * sizeof(char));
-	  if (crtc_data->info.connector_name == NULL)
-	    goto fail;
-	  memcpy(crtc_data->info.connector_name, template.connector_name, (n + 1) * sizeof(char));
-	}
-    }
-  
-  return 0;
-  
- fail:
-  for (i = 0; i < data->crtc_count; i++)
-    {
-      free(data->crtcs[i].info.edid);
-      free(data->crtcs[i].info.connector_name);
-    }
-  free(data->crtcs);
-  data->crtcs = NULL;
-  return LIBGAMMA_ERRNO_SET;
-}
-
-
-/**
- * Release all resources held by a partition state.
- * 
- * @param  this  The partition state.
- */
-void libgamma_dummy_partition_destroy(libgamma_partition_state_t* restrict this)
-{
-  libgamma_dummy_partition_t* data = this->data;
-  size_t i;
-  
-  if (data == NULL)
-    return;
-  
-  for (i = 0; i < data->crtc_count; i++)
-    {
-      free(data->crtcs[i].info.edid);
-      free(data->crtcs[i].info.connector_name);
-    }
-  free(data->crtcs);
-  data->crtcs = NULL;
-}
-
-
-/**
- * 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_dummy_partition_restore(libgamma_partition_state_t* restrict this)
-{
-  libgamma_dummy_partition_t* data = this->data;
-  size_t i;
-  
-  if (libgamma_dummy_configurations.capabilities.partition_restore == 0)
-    return errno = ENOTSUP, LIBGAMMA_ERRNO_SET;
-  
-  for (i = 0; i < data->crtc_count; i++)
-    if (libgamma_dummy_crtc_restore_forced(data->crtcs + i) < 0)
-      return -1;
-  
-  return 0;
-}
-
-
-
-/**
- * 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_dummy_crtc_initialise(libgamma_crtc_state_t* restrict this,
-				   libgamma_partition_state_t* restrict partition, size_t crtc)
-{
-  libgamma_dummy_partition_t* partition_data = partition->data;
-  libgamma_dummy_crtc_t* data = partition_data->crtcs + crtc;
-  size_t stop_size;
-  
-  this->data = NULL;
-  
-  if (crtc >= partition_data->crtc_count)
-    return LIBGAMMA_NO_SUCH_CRTC;
-  
-  this->data = data;
-  data->state = this;
-  
-  if (data->info.gamma_depth == -1)
-    stop_size = sizeof(float);
-  else if (data->info.gamma_depth == -2)
-    stop_size = sizeof(double);
-  else
-    stop_size = (size_t)(data->info.gamma_depth) / 8;
-  
-  if ((data->gamma_red   = malloc(data->info.red_gamma_size   * stop_size)) == NULL)
-    goto fail;
-  if ((data->gamma_green = malloc(data->info.green_gamma_size * stop_size)) == NULL)
-    goto fail;
-  if ((data->gamma_blue  = malloc(data->info.blue_gamma_size  * stop_size)) == NULL)
-    goto fail;
-  
-  return libgamma_dummy_crtc_restore_forced(data);
-  
- fail:
-  free(data->gamma_red),   data->gamma_red   = NULL;
-  free(data->gamma_green), data->gamma_green = NULL;
-  free(data->gamma_blue),  data->gamma_blue  = NULL;
-  return LIBGAMMA_ERRNO_SET;
-}
-
-
-/**
- * Release all resources held by a CRTC state.
- * 
- * @param  this  The CRTC state.
- */
-void libgamma_dummy_crtc_destroy(libgamma_crtc_state_t* restrict this)
-{
-  libgamma_dummy_crtc_t* data = this->data;
-  if (data == NULL)
-    return;
-  
-  free(data->gamma_red),   data->gamma_red   = NULL;
-  free(data->gamma_green), data->gamma_green = NULL;
-  free(data->gamma_blue),  data->gamma_blue  = NULL;
-}
-
-
-/**
- * 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_dummy_crtc_restore(libgamma_crtc_state_t* restrict this)
-{
-  if (libgamma_dummy_configurations.capabilities.crtc_restore == 0)
-    return errno = ENOTSUP, LIBGAMMA_ERRNO_SET;
-  
-  return libgamma_dummy_crtc_restore_forced(this->data);
-}
-
-
-/**
- * Restore the gamma ramps for a CRTC to the system settings for that CRTC
- * and ignore the method's capabilities.
- * 
- * @param   this  The CRTC data
- * @return        Zero on success, otherwise (negative) the value of an
- *                error identifier provided by this library.
- */
-static int libgamma_dummy_crtc_restore_forced(libgamma_dummy_crtc_t* restrict data)
-{
-  size_t rn = data->info.blue_gamma_size;
-  size_t gn = data->info.green_gamma_size;
-  size_t bn = data->info.blue_gamma_size;
-  size_t i;
-  if (data->gamma_red == NULL)
-    return 0;
-  
-#define __reset_ramps(BITS)							\
-  int ## BITS ## _t* red   = data->gamma_red;					\
-  int ## BITS ## _t* green = data->gamma_green;					\
-  int ## BITS ## _t* blue  = data->gamma_blue;					\
-  double max = (double)INT ## BITS ## _MAX;					\
-  for (i = 0; i < rn; i++)							\
-    red[i]   = (int ## BITS ## _t)(max * ((double)i / (double)(rn - 1)));	\
-  for (i = 0; i < gn; i++)							\
-    green[i] = (int ## BITS ## _t)(max * ((double)i / (double)(gn - 1)));	\
-  for (i = 0; i < bn; i++)							\
-    blue[i]  = (int ## BITS ## _t)(max * ((double)i / (double)(bn - 1)))
-  
-  if      (data->info.gamma_depth ==  8)  { __reset_ramps(8);  }
-  else if (data->info.gamma_depth == 16)  { __reset_ramps(16); }
-  else if (data->info.gamma_depth == 32)  { __reset_ramps(32); }
-  else if (data->info.gamma_depth == 64)  { __reset_ramps(64); }
-  else if (data->info.gamma_depth == -1)
-    {
-      float* red   = data->gamma_red;
-      float* green = data->gamma_green;
-      float* blue  = data->gamma_blue;
-      for (i = 0; i < rn; i++)
-	red[i]   = (float)((double)i / (double)(rn - 1));
-      for (i = 0; i < gn; i++)
-	green[i] = (float)((double)i / (double)(gn - 1));
-      for (i = 0; i < bn; i++)
-	blue[i]  = (float)((double)i / (double)(bn - 1));
-    }
-  else
-    {
-      double* red   = data->gamma_red;
-      double* green = data->gamma_green;
-      double* blue  = data->gamma_blue;
-      for (i = 0; i < rn; i++)
-	red[i]   = (double)i / (double)(rn - 1);
-      for (i = 0; i < gn; i++)
-	green[i] = (double)i / (double)(gn - 1);
-      for (i = 0; i < bn; i++)
-	blue[i]  = (double)i / (double)(bn - 1);
-    }
-  
-#undef __reset_ramps
-  
-  return 0;
-}
-
-
-
-/**
- * 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_dummy_get_crtc_information(libgamma_crtc_information_t* restrict this,
-					libgamma_crtc_state_t* restrict crtc, int32_t fields)
-{
-  libgamma_dummy_crtc_t* restrict data = crtc->data;
-  int supported = libgamma_dummy_configurations.capabilities.crtc_information;
-  int e = 0;
-  
-  /* Copy over information. */
-  *this = data->info;
-  
-  /* Duplicate strings. */
-  if (this->edid != NULL)
-    {
-      this->edid = malloc(this->edid_length * sizeof(char));
-      if (this->edid == NULL)
-	this->edid_error = errno;
-      memcpy(this->edid, data->info.edid, this->edid_length * sizeof(char));
-    }
-  if (this->connector_name != NULL)
-    {
-      size_t n = strlen(this->connector_name);
-      this->connector_name = malloc((n + 1) * sizeof(char));
-      if (this->connector_name == NULL)
-	this->connector_name_error = errno;
-      memcpy(this->connector_name, data->info.connector_name, (n + 1) * sizeof(char));
-    }
-  
-  /* Parse EDID. */
-  if ((fields & (LIBGAMMA_CRTC_INFO_MACRO_EDID ^ LIBGAMMA_CRTC_INFO_EDID)))
-    e |= libgamma_parse_edid(this, fields);
-  
-  /* Test errors. */
-#define _E(FIELD, VAR)  \
-  ((fields & FIELD) ? ((supported & FIELD) ? VAR : (VAR = LIBGAMMA_CRTC_INFO_NOT_SUPPORTED)) : 0)
-  e |= _E(LIBGAMMA_CRTC_INFO_EDID,           this->edid_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_WIDTH_MM,       this->width_mm_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_HEIGHT_MM,      this->height_mm_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_GAMMA_SIZE,     this->gamma_size_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_GAMMA_DEPTH,    this->gamma_depth_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT,  this->gamma_support_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER, this->subpixel_order_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_ACTIVE,         this->active_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_CONNECTOR_NAME, this->connector_name_error);
-  e |= _E(LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE, this->connector_type_error);
-  
-  if ((fields & LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID) && !(supported & LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID))
-    e |= this->width_mm_edid_error = LIBGAMMA_CRTC_INFO_NOT_SUPPORTED;
-  if ((fields & LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID) && !(supported & LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID))
-    e |= this->height_mm_edid_error = LIBGAMMA_CRTC_INFO_NOT_SUPPORTED;
-  if ((fields & LIBGAMMA_CRTC_INFO_GAMMA) && !(supported & LIBGAMMA_CRTC_INFO_GAMMA))
-    e |= this->gamma_error = LIBGAMMA_CRTC_INFO_NOT_SUPPORTED;
-#undef _E
-  
-  return e ? -1 : 0;
-}
-
-
-/**
- * Get current the gamma ramps for a CRTC, 8-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_dummy_crtc_get_gamma_ramps8(libgamma_crtc_state_t* restrict this,
-					 libgamma_gamma_ramps8_t* restrict ramps)
-{
-}
-
-
-/**
- * Set the gamma ramps for a CRTC, 8-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_dummy_crtc_set_gamma_ramps8(libgamma_crtc_state_t* restrict this,
-					 libgamma_gamma_ramps8_t ramps)
-{
-}
-
-
-
-/**
- * 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_dummy_crtc_get_gamma_ramps16(libgamma_crtc_state_t* restrict this,
-					  libgamma_gamma_ramps16_t* restrict ramps)
-{
-}
-
-
-/**
- * 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_dummy_crtc_set_gamma_ramps16(libgamma_crtc_state_t* restrict this,
-					  libgamma_gamma_ramps16_t ramps)
-{
-}
-
-
-
-/**
- * Get current the gamma ramps for a CRTC, 32-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_dummy_crtc_get_gamma_ramps32(libgamma_crtc_state_t* restrict this,
-					  libgamma_gamma_ramps32_t* restrict ramps)
-{
-}
-
-
-/**
- * Set the gamma ramps for a CRTC, 32-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_dummy_crtc_set_gamma_ramps32(libgamma_crtc_state_t* restrict this,
-					  libgamma_gamma_ramps32_t ramps)
-{
-}
-
-
-
-/**
- * Get current the gamma ramps for a CRTC, 64-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_dummy_crtc_get_gamma_ramps64(libgamma_crtc_state_t* restrict this,
-					  libgamma_gamma_ramps64_t* restrict ramps)
-{
-}
-
-
-/**
- * Set the gamma ramps for a CRTC, 64-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_dummy_crtc_set_gamma_ramps64(libgamma_crtc_state_t* restrict this,
-					  libgamma_gamma_ramps64_t ramps)
-{
-}
-
-
-
-/**
- * Get current the 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_dummy_crtc_get_gamma_rampsf(libgamma_crtc_state_t* restrict this,
-					 libgamma_gamma_rampsf_t* restrict ramps)
-{
-}
-
-
-/**
- * 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_dummy_crtc_set_gamma_rampsf(libgamma_crtc_state_t* restrict this,
-					 libgamma_gamma_rampsf_t ramps)
-{
-}
-
-
-/**
- * Get current the gamma ramps for a CRTC, `double` 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_dummy_crtc_get_gamma_rampsd(libgamma_crtc_state_t* restrict this,
-					 libgamma_gamma_rampsd_t* restrict ramps)
-{
-}
-
-
-/**
- * Set the gamma ramps for a CRTC, `double` 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_dummy_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this,
-					 libgamma_gamma_rampsd_t ramps)
-{
-}
-