move files around

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

1 files changed, 0 insertions, 916 deletions

diff --git a/src/gamma-x-randr.c b/src/gamma-x-randr.c
deleted file mode 100644
index 9870f6b..0000000
--- a/src/gamma-x-randr.c
+++ /dev/null
@@ -1,916 +0,0 @@
-/**
- * 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_RANDR
-# error Compiling gamma-x-randr.c without HAVE_LIBGAMMA_METHOD_X_RANDR
-#endif
-
-#include "gamma-x-randr.h"
-
-#include "libgamma-error.h"
-#include "edid.h"
-
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <stdint.h>
-#ifdef DEBUG
-# include <stdio.h>
-#endif
-
-#include <xcb/xcb.h>
-#include <xcb/randr.h>
-
-
-/**
- * The major version of RandR the library expects.
- */
-#define RANDR_VERSION_MAJOR  1
-
-/**
- * The minor version of RandR the library expects.
- */
-#define RANDR_VERSION_MINOR  3
-
-
-
-/**
- * Data structure for partition data.
- */
-typedef struct libgamma_x_randr_partition_data
-{
-  /**
-   * Mapping from CRTC indices to CRTC identifiers.
-   */
-  xcb_randr_crtc_t* crtcs;
-  
-  /**
-   * Mapping from output indices to output identifiers.
-   */
-  xcb_randr_output_t* outputs;
-  
-  /**
-   * The number of outputs available.
-   */
-  size_t outputs_count;
-  
-  /**
-   * Mapping from CRTC indices to output indices.
-   * CRTC's without an output (should be impossible)
-   * have the value `SIZE_MAX` which is impossible
-   * for an existing mapping.
-   */
-  size_t* crtc_to_output;
-  
-  /**
-   * Screen configuration timestamp.
-   */
-  xcb_timestamp_t config_timestamp;
-  
-} libgamma_x_randr_partition_data_t;
-
-
-
-/**
- * Translate an xcb error into a libgamma error.
- * 
- * @param   error_code     The xcb error.
- * @param   default_error  The libgamma error to use if the xcb error is not recognised.
- * @return                 The libgamma error.
- */
-static int translate_error_(int error_code, int default_error)
-{
-  switch (error_code)
-    {
-    case XCB_CONN_ERROR:                    return errno = ECONNABORTED, LIBGAMMA_ERRNO_SET;
-    case XCB_CONN_CLOSED_EXT_NOTSUPPORTED:  return errno = ENOPROTOOPT, LIBGAMMA_ERRNO_SET;
-    case XCB_CONN_CLOSED_MEM_INSUFFICIENT:  return errno = ENOMEM, LIBGAMMA_ERRNO_SET;
-    case XCB_CONN_CLOSED_REQ_LEN_EXCEED:    return errno = EMSGSIZE, LIBGAMMA_ERRNO_SET;
-    case XCB_CONN_CLOSED_PARSE_ERR:         return LIBGAMMA_NO_SUCH_SITE;
-    case XCB_CONN_CLOSED_INVALID_SCREEN:    return LIBGAMMA_NO_SUCH_PARTITION;
-    case XCB_CONN_CLOSED_FDPASSING_FAILED:  return errno = EIO, LIBGAMMA_ERRNO_SET;
-    default:
-      return default_error;
-    }
-}
-
-
-/**
- * Translate an xcb error into a libgamma error.
- * 
- * @param   error_code     The xcb error.
- * @param   default_error  The libgamma error to use if the xcb error is not recognised.
- * @param   return_errno   Whether an `errno` value may be returned.
- * @return                 The libgamma error.
- */
-static int translate_error(int error_code, int default_error, int return_errno)
-{
-  int r = translate_error_(error_code, default_error);
-  return return_errno ? (r > 0 ? errno : r) : r;
-}
-
-
-/**
- * Return the capabilities of the adjustment method.
- * 
- * @param  this  The data structure to fill with the method's capabilities.
- */
-void libgamma_x_randr_method_capabilities(libgamma_method_capabilities_t* restrict this)
-{
-  char* display = getenv("DISPLAY");
-  this->crtc_information = LIBGAMMA_CRTC_INFO_EDID
-			 | LIBGAMMA_CRTC_INFO_WIDTH_MM
-			 | LIBGAMMA_CRTC_INFO_HEIGHT_MM
-			 | LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID
-			 | LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID
-			 | LIBGAMMA_CRTC_INFO_GAMMA_SIZE
-			 | LIBGAMMA_CRTC_INFO_GAMMA_DEPTH
-			 | LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER
-			 | LIBGAMMA_CRTC_INFO_CONNECTOR_NAME
-			 | LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE
-			 | LIBGAMMA_CRTC_INFO_GAMMA;
-  this->default_site_known = (display && *display) ? 1 : 0;
-  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;
-}
-
-
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Waggregate-return"
-
-
-/**
- * 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_randr_site_initialise(libgamma_site_state_t* restrict this,
-				     char* restrict site)
-{
-  xcb_generic_error_t* error = NULL;
-  xcb_connection_t* restrict connection;
-  xcb_randr_query_version_cookie_t cookie;
-  xcb_randr_query_version_reply_t* restrict reply;
-  const xcb_setup_t* restrict setup;
-  xcb_screen_iterator_t iter;
-  
-  this->data = connection = xcb_connect(site, NULL);
-  if (connection == NULL)
-    return LIBGAMMA_NO_SUCH_SITE;
-  
-  cookie = xcb_randr_query_version(connection, RANDR_VERSION_MAJOR, RANDR_VERSION_MINOR);
-  reply = xcb_randr_query_version_reply(connection, cookie, &error);
-  
-  if ((error != NULL) || (reply == NULL))
-    {
-      free(reply);
-      xcb_disconnect(connection);
-      if (error != NULL)
-	return translate_error(error->error_code, LIBGAMMA_PROTOCOL_VERSION_QUERY_FAILED, 0);
-      return LIBGAMMA_PROTOCOL_VERSION_QUERY_FAILED;
-    }
-  
-  if ((reply->major_version != RANDR_VERSION_MAJOR) ||
-      (reply->minor_version < RANDR_VERSION_MINOR))
-    {
-#ifdef DEBUG
-      fprintf(stderr, "libgamma: RandR protocol version: %u.%u", reply->major_version, reply->minor_version);
-#endif
-      free(reply);
-      xcb_disconnect(connection);
-      return LIBGAMMA_PROTOCOL_VERSION_NOT_SUPPORTED;
-    }
-  
-  free(reply);
-  
-  if ((setup = xcb_get_setup(connection)) == NULL)
-    {
-      xcb_disconnect(connection);
-      return LIBGAMMA_LIST_PARTITIONS_FAILED;
-    }
-  iter = xcb_setup_roots_iterator(setup);
-  this->partitions_available = (size_t)(iter.rem);
-  
-  return iter.rem < 0 ? LIBGAMMA_NEGATIVE_PARTITION_COUNT : 0;
-}
-
-
-/**
- * Release all resources held by a site state.
- * 
- * @param  this  The site state.
- */
-void libgamma_x_randr_site_destroy(libgamma_site_state_t* restrict this)
-{
-  xcb_disconnect((xcb_connection_t*)(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_randr_site_restore(libgamma_site_state_t* restrict this)
-{
-  (void) this;
-  return errno = ENOTSUP, LIBGAMMA_ERRNO_SET;
-}
-
-
-/**
- * Duplicate a memory area.
- * 
- * @param   ptr    The memory aree.
- * @param   bytes  The size, in bytes, of the memory area.
- * @return         A duplication of the memory, `NULL` if zero-length or on error.
- */
-static inline void* memdup(void* restrict ptr, size_t bytes)
-{
-  char* restrict rc;
-  if (bytes == 0)
-    return NULL;
-  if ((rc = malloc(bytes)) == NULL)
-    return NULL;
-  memcpy(rc, ptr, bytes);
-  return rc;
-}
-
-
-/**
- * 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_randr_partition_initialise(libgamma_partition_state_t* restrict this,
-					  libgamma_site_state_t* restrict site, size_t partition)
-{
-  int fail_rc = LIBGAMMA_ERRNO_SET;
-  xcb_connection_t* restrict connection = site->data;
-  const xcb_setup_t* restrict setup = xcb_get_setup(connection);
-  xcb_screen_t* restrict screen = NULL;
-  xcb_generic_error_t* error = NULL;
-  xcb_screen_iterator_t iter;
-  xcb_randr_get_screen_resources_current_cookie_t cookie;
-  xcb_randr_get_screen_resources_current_reply_t* restrict reply;
-  xcb_randr_crtc_t* restrict crtcs;
-  xcb_randr_output_t* restrict outputs;
-  libgamma_x_randr_partition_data_t* restrict data;
-  size_t i;
-  
-  if (setup == NULL)
-    return LIBGAMMA_LIST_PARTITIONS_FAILED;
-  
-  for (i = 0; iter.rem > 0; i++, xcb_screen_next(&iter))
-    if (i == partition)
-      {
-	screen = iter.data;
-	break;
-      }
-  if (iter.rem == 0)
-    return LIBGAMMA_NO_SUCH_PARTITION;
-  
-  if (screen == NULL)
-    return LIBGAMMA_NULL_PARTITION;
-  
-  cookie = xcb_randr_get_screen_resources_current(connection, screen->root);
-  reply = xcb_randr_get_screen_resources_current_reply(connection, cookie, &error);
-  if (error != NULL)
-    return translate_error(error->error_code, LIBGAMMA_LIST_CRTCS_FAILED, 0);
-  
-  this->crtcs_available = reply->num_crtcs;
-  crtcs = xcb_randr_get_screen_resources_current_crtcs(reply);
-  outputs = xcb_randr_get_screen_resources_current_outputs(reply);
-  if ((crtcs == NULL) || (outputs == NULL))
-    {
-      free(reply);
-      return LIBGAMMA_REPLY_VALUE_EXTRACTION_FAILED;
-    }
-  
-  /* We use `calloc` because we want `data`'s pointers to be `NULL` if not allocated at `fail`. */
-  data = calloc(1, sizeof(libgamma_x_randr_partition_data_t));
-  if (data == NULL)
-    goto fail;
-  
-  /* Copy the CRTC:s, just so we do not have to keep the reply in memory. */
-  data->crtcs = memdup(crtcs, (size_t)(reply->num_crtcs) * sizeof(xcb_randr_crtc_t));
-  if ((data->crtcs == NULL) && (reply->num_crtcs > 0))
-    goto fail;
-  
-  /* Copy the outputs as well. */
-  data->outputs = memdup(outputs, (size_t)(reply->num_outputs) * sizeof(xcb_randr_output_t));
-  if ((data->outputs == NULL) && (reply->num_outputs > 0))
-    goto fail;
-  
-  data->outputs_count = (size_t)(reply->num_outputs);
-  
-  data->crtc_to_output = malloc((size_t)(reply->num_crtcs) * sizeof(size_t));
-  if (data->crtc_to_output == NULL)
-    goto fail;
-  for (i = 0; i < (size_t)(reply->num_crtcs); i++)
-    data->crtc_to_output[i] = SIZE_MAX;
-  for (i = 0; i < (size_t)(reply->num_outputs); i++)
-    {
-      xcb_randr_get_output_info_cookie_t out_cookie;
-      xcb_randr_get_output_info_reply_t* out_reply;
-      uint16_t j;
-      
-      out_cookie = xcb_randr_get_output_info(connection, outputs[i], reply->config_timestamp);
-      out_reply = xcb_randr_get_output_info_reply(connection, out_cookie, &error);
-      if (error != NULL)
-	{
-	  fail_rc = translate_error(error->error_code, LIBGAMMA_OUTPUT_INFORMATION_QUERY_FAILED, 0);
-	  goto fail;
-	}
-      
-      for (j = 0; j < reply->num_crtcs; j++)
-	if (crtcs[j] == out_reply->crtc)
-	  {
-	    data->crtc_to_output[j] = i;
-	    break;
-	  }
-      
-      free(out_reply);
-    }
-  
-  data->config_timestamp = reply->config_timestamp;
-  this->data = data;
-  free(reply);
-  return 0;
-  
- fail:
-  if (data != NULL)
-    {
-      free(data->crtcs);
-      free(data->outputs);
-      free(data->crtc_to_output);
-      free(data);
-    }
-  free(reply);
-  return fail_rc;
-}
-
-
-/**
- * Release all resources held by a partition state.
- * 
- * @param  this  The partition state.
- */
-void libgamma_x_randr_partition_destroy(libgamma_partition_state_t* restrict this)
-{
-  libgamma_x_randr_partition_data_t* restrict data = this->data;
-  free(data->crtcs);
-  free(data->outputs);
-  free(data->crtc_to_output);
-  free(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_x_randr_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_randr_crtc_initialise(libgamma_crtc_state_t* restrict this,
-				     libgamma_partition_state_t* restrict partition, size_t crtc)
-{
-  libgamma_x_randr_partition_data_t* restrict screen_data = partition->data;
-  xcb_randr_crtc_t* restrict crtc_ids = screen_data->crtcs;
-  if (crtc >= partition->crtcs_available)
-    return LIBGAMMA_NO_SUCH_CRTC;
-  this->data = crtc_ids + crtc;
-  return 0;
-}
-
-
-/**
- * Release all resources held by a CRTC state.
- * 
- * @param  this  The CRTC state.
- */
-void libgamma_x_randr_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_randr_crtc_restore(libgamma_crtc_state_t* restrict this)
-{
-  (void) this;
-  return errno = ENOTSUP, LIBGAMMA_ERRNO_SET;
-}
-
-
-
-/**
- * Get the gamma ramp size of 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.
- * @return        Non-zero on error.
- */
-static int get_gamma_ramp_size(libgamma_crtc_information_t* restrict out, libgamma_crtc_state_t* restrict crtc)
-{
-  xcb_connection_t* restrict connection = crtc->partition->site->data;
-  xcb_randr_crtc_t* restrict crtc_id = crtc->data;
-  xcb_randr_get_crtc_gamma_size_cookie_t cookie;
-  xcb_randr_get_crtc_gamma_size_reply_t* restrict reply;
-  xcb_generic_error_t* error;
-  
-  out->gamma_size_error = 0;
-  cookie = xcb_randr_get_crtc_gamma_size(connection, *crtc_id);
-  reply = xcb_randr_get_crtc_gamma_size_reply(connection, cookie, &error);
-  if (error != NULL)
-    return out->gamma_size_error = translate_error(error->error_code, LIBGAMMA_GAMMA_RAMPS_SIZE_QUERY_FAILED, 1);
-  if (reply->size < 2)
-    out->gamma_size_error = LIBGAMMA_SINGLETON_GAMMA_RAMP;
-  out->red_gamma_size = out->green_gamma_size = out->blue_gamma_size = reply->size;
-  free(reply);
-  return out->gamma_size_error;
-}
-
-
-/**
- * Read information from the CRTC's output.
- * 
- * @param   out     Instance of a data structure to fill with the information about the CRTC.
- * @param   output  The CRTC's output information.
- * @return          Non-zero if at least on error occured.
- */
-static int read_output_data(libgamma_crtc_information_t* restrict out, xcb_randr_get_output_info_reply_t* restrict output)
-{
-  switch (output->connection)
-    {
-    case XCB_RANDR_CONNECTION_CONNECTED:
-      out->active = 1;
-      out->width_mm = output->mm_width;
-      out->height_mm = output->mm_height;
-#define __select(value)  \
-  case XCB_RENDER_SUB_PIXEL_##value:  out->subpixel_order = LIBGAMMA_SUBPIXEL_ORDER_##value;  break
-      switch (output->subpixel_order)
-	{
-	__select (UNKNOWN);
-	__select (HORIZONTAL_RGB);
-	__select (HORIZONTAL_BGR);
-	__select (VERTICAL_RGB);
-	__select (VERTICAL_BGR);
-	__select (NONE);
-	default:
-	  out->subpixel_order_error = LIBGAMMA_SUBPIXEL_ORDER_NOT_RECOGNISED;
-	  break;
-	}
-#undef __select
-      return 0;
-      
-    case XCB_RANDR_CONNECTION_DISCONNECTED:
-      out->active = 0;
-      out->width_mm_error = LIBGAMMA_NOT_CONNECTED;
-      out->height_mm_error = LIBGAMMA_NOT_CONNECTED;
-      out->subpixel_order_error = LIBGAMMA_NOT_CONNECTED;
-      return 0;
-      
-    default:
-      out->active = 0;
-      out->active_error = LIBGAMMA_STATE_UNKNOWN;
-      out->width_mm_error = LIBGAMMA_NOT_CONNECTED;
-      out->height_mm_error = LIBGAMMA_NOT_CONNECTED;
-      out->subpixel_order_error = LIBGAMMA_NOT_CONNECTED;
-      return -1;
-    }
-}
-
-
-/**
- * Determine the connector type from the connector name.
- * 
- * @param  this  The CRTC information to use and extend.
- * @param        Non-zero on error.
- */
-static int get_connector_type(libgamma_crtc_information_t* restrict this)
-{
-  if ((this->connector_type_error = this->connector_name_error))
-    return -1;
-  
-#define __select(name, type)                                           \
-  if (strstr(this->connector_name, name "-") == this->connector_name)  \
-    return this->connector_type = LIBGAMMA_CONNECTOR_TYPE_##type, 0
-  
-  __select ("None",         Unknown);
-  __select ("VGA",          VGA);
-  __select ("DVI-I",        DVII);
-  __select ("DVI-D",        DVID);
-  __select ("DVI-A",        DVIA);
-  __select ("Composite",    Composite);
-  __select ("S-Video",      SVIDEO);
-  __select ("Component",    Component);
-  __select ("LFP",          LFP);
-  __select ("Proprietary",  Unknown);
-  __select ("HDMI",         HDMI);
-  __select ("DisplayPort",  DisplayPort);
-  
-#undef __select
-  
-  this->connector_name_error = LIBGAMMA_CONNECTOR_TYPE_NOT_RECOGNISED;
-  return -1;
-}
-
-
-/**
- * Get the output name of a CRTC.
- * 
- * @param   this    Instance of a data structure to fill with the information about the CRTC.
- * @param   output  The CRTC's output's information.
- * @return          Non-zero on error.
- */
-static int get_output_name(libgamma_crtc_information_t* restrict out, xcb_randr_get_output_info_reply_t* restrict output)
-{
-  char* restrict store;
-  uint8_t* restrict name;
-  uint16_t length;
-  size_t i;
-  
-  name = xcb_randr_get_output_info_name(output);
-  length = output->name_len; /* There is no NUL-termination. */
-  if (name == NULL)
-    {
-      out->connector_name_error = LIBGAMMA_REPLY_VALUE_EXTRACTION_FAILED;
-      return -1;
-    }
-  
-  store = malloc(((size_t)length + 1) * sizeof(char));
-  if (store == NULL)
-    {
-      out->connector_name_error = errno;
-      return -1;
-    }
-  
-  /* char is guaranteed to be (u)int_least8_t, but it is only guaranteed to be (u)int8_t
-   * on POSIX, so to be truly portable we will not assume that char is (u)int8_t. */
-  for (i = 0; i < (size_t)length; i++)
-    store[i] = (char)(name[i]);
-  store[length] = '\0';
-  
-  return 0;
-}
-
-
-/**
- * Get the Extended Display Information Data of the monitor connected to the connector of a CRTC.
- * 
- * @param   out     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   output  The CRTC's output.
- * @return          Non-zero on error.
- */
-static int get_edid(libgamma_crtc_information_t* restrict out,
-		    libgamma_crtc_state_t* restrict crtc, xcb_randr_output_t output)
-{
-  xcb_connection_t* restrict connection = crtc->partition->site->data;
-  xcb_randr_list_output_properties_cookie_t prop_cookie;
-  xcb_randr_list_output_properties_reply_t* restrict prop_reply;
-  xcb_atom_t* atoms;
-  xcb_atom_t* atoms_end;
-  xcb_generic_error_t* error;
-  
-  /* Acquire a list of all properties of the output. */
-  prop_cookie = xcb_randr_list_output_properties(connection, output);
-  prop_reply = xcb_randr_list_output_properties_reply(connection, prop_cookie, &error);
-  
-  if (error != NULL)
-    return out->edid_error = translate_error(error->error_code, LIBGAMMA_LIST_PROPERTIES_FAILED, 1);
-  
-  /* Extract the properties form the data structure that holds them, */
-  atoms = xcb_randr_list_output_properties_atoms(prop_reply);
-  /* and get the last one so that we can iterate over them nicely. */
-  atoms_end = atoms + xcb_randr_list_output_properties_atoms_length(prop_reply);
-  
-  if (atoms == NULL)
-    {
-      free(prop_reply);
-      return out->edid_error = LIBGAMMA_REPLY_VALUE_EXTRACTION_FAILED;;
-    }
-  
-  /* For each property */
-  for (; atoms != atoms_end; atoms++)
-    {
-      xcb_get_atom_name_cookie_t atom_name_cookie;
-      xcb_get_atom_name_reply_t* restrict atom_name_reply;
-      char* restrict atom_name;
-      int atom_name_len;
-      xcb_randr_get_output_property_cookie_t atom_cookie;
-      xcb_randr_get_output_property_reply_t* restrict atom_reply;
-      unsigned char* restrict atom_data;
-      int length;
-      
-      /* Acquire the atom name. */
-      atom_name_cookie = xcb_get_atom_name(connection, *atoms);
-      atom_name_reply = xcb_get_atom_name_reply(connection, atom_name_cookie, &error);
-      if (error)
-	continue;
-      
-      /* Extract the atom name from the data structure that holds it. */
-      atom_name = xcb_get_atom_name_name(atom_name_reply);
-      /* As well as the length of the name; it is not NUL-termianted.*/
-      atom_name_len = xcb_get_atom_name_name_length(atom_name_reply);
-      
-      if (/* Check for errors. */
-	  (atom_name == NULL) || /* (atom_name_len < 1) || */
-	  /* Check that the length is the expected length for the EDID property. */
-	  (atom_name_len != 4) ||
-	  /* Check that the property is the EDID property. */
-	  (atom_name[0] != 'E') || (atom_name[1] != 'D') || (atom_name[2] != 'I') || (atom_name[3] != 'D'))
-	{
-	  free(atom_name_reply);
-	  continue;
-	}
-      
-      /* Acquire the property's value, we know that it is either 128 or 256 byte long. */
-      atom_cookie = xcb_randr_get_output_property(connection, output, *atoms,
-						  XCB_GET_PROPERTY_TYPE_ANY, 0, 256, 0, 0);
-      atom_reply = xcb_randr_get_output_property_reply(connection, atom_cookie, &error);
-      /* (*) EDID version 1.0 through 1.4 define it as 128 bytes long,
-       * but version 2.0 define it as 256 bytes long. However,
-       * version 2.0 is rare(?) and has been deprecated and replaced
-       * by version 1.3 (I guess that is with a new version epoch,
-       * but I do not know.) */ 
-      if (error)
-	{
-	  free(atom_name_reply);
-	  free(prop_reply);
-	  return out->edid_error = LIBGAMMA_PROPERTY_VALUE_QUERY_FAILED;
-	}
-      
-      /* Extract the property's value, */
-      atom_data = xcb_randr_get_output_property_data(atom_reply);
-      /* and its actual length. */
-      length = xcb_randr_get_output_property_data_length(atom_reply);
-      if ((atom_data == NULL) || (length < 1))
-	{
-	  free(atom_reply);
-	  free(atom_name_reply);
-	  free(prop_reply);
-	  return out->edid_error = LIBGAMMA_REPLY_VALUE_EXTRACTION_FAILED;
-	}
-      
-      /* Store the EDID. */
-      out->edid = malloc((size_t)length * sizeof(unsigned char));
-      if (out->edid == NULL)
-	out->edid_error = errno;
-      else
-	memcpy(out->edid, atom_data, (size_t)length * sizeof(unsigned char));
-      
-      free(atom_reply);
-      free(atom_name_reply);
-      free(prop_reply);
-      
-      return out->edid_error;
-    }
-  
-  return out->edid_error = LIBGAMMA_EDID_NOT_FOUND;
-}
-
-
-/**
- * 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_randr_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)
-  int e = 0;
-  xcb_randr_get_output_info_reply_t* restrict output_info = NULL;
-  xcb_randr_output_t output;
-  int free_edid;
-  
-  /* Wipe all error indicators. */
-  memset(this, 0, sizeof(libgamma_crtc_information_t));
-  
-  /* We need to free the EDID after us if it is not explicitly requested.  */
-  free_edid = (fields & LIBGAMMA_CRTC_INFO_EDID) == 0;
-  
-  /* Figure out what fields we need to get the data for to get the data for other fields. */
-  if ((fields & (LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID | LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID | LIBGAMMA_CRTC_INFO_GAMMA)))
-    fields |= LIBGAMMA_CRTC_INFO_EDID;
-  if ((fields & LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE))
-    fields |= LIBGAMMA_CRTC_INFO_CONNECTOR_NAME;
-  if ((fields & (LIBGAMMA_CRTC_INFO_WIDTH_MM | LIBGAMMA_CRTC_INFO_HEIGHT_MM | LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER)))
-    fields |= LIBGAMMA_CRTC_INFO_ACTIVE;
-  
-  /* Jump if the output information is not required. */
-  if ((fields & (LIBGAMMA_CRTC_INFO_ACTIVE | LIBGAMMA_CRTC_INFO_CONNECTOR_NAME)) == 0)
-    goto cont;
-  
-  /* Get connector and connector information. */
-  {
-    xcb_connection_t* restrict connection = crtc->partition->site->data;
-    libgamma_x_randr_partition_data_t* restrict screen_data = crtc->partition->data;
-    size_t output_index = screen_data->crtc_to_output[crtc->crtc];
-    xcb_randr_get_output_info_cookie_t cookie;
-    xcb_generic_error_t* error;
-    if (output_index == SIZE_MAX)
-      {
-	e |= this->edid_error = this->gamma_error = this->width_mm_edid_error
-	   = this->height_mm_edid_error = this->connector_type_error
-	   = this->connector_name_error = this->subpixel_order_error
-	   = this->width_mm_error = this->height_mm_error
-	   = this->active_error = LIBGAMMA_CONNECTOR_UNKNOWN;
-	goto cont;
-      }
-    output = screen_data->outputs[output_index];
-    cookie = xcb_randr_get_output_info(connection, output, screen_data->config_timestamp);
-    output_info = xcb_randr_get_output_info_reply(connection, cookie, &error);
-    if (error != NULL)
-      {
-	e |= this->edid_error = this->gamma_error = this->width_mm_edid_error
-	   = this->height_mm_edid_error = this->connector_type_error
-	   = this->connector_name_error = this->subpixel_order_error
-	   = this->width_mm_error = this->height_mm_error
-	   = this->active_error = LIBGAMMA_OUTPUT_INFORMATION_QUERY_FAILED;
-	goto cont;
-      }
-  }
-  
-  e |= get_output_name(this, output_info);
-  if ((fields & LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE))
-    e |= get_connector_type(this);
-  e |= read_output_data(this, output_info);
-  if ((fields & (LIBGAMMA_CRTC_INFO_WIDTH_MM | LIBGAMMA_CRTC_INFO_HEIGHT_MM)))
-    e |= this->width_mm_error | this->height_mm_error;
-  e |= (fields & LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER) ? this->subpixel_order_error : 0;
-  
-  if ((fields & LIBGAMMA_CRTC_INFO_EDID) == 0)
-    goto cont;
-  if (this->active == 0)
-    {
-      e |= this->edid_error = this->gamma_error = this->width_mm_edid_error
-	 = this->height_mm_edid_error = LIBGAMMA_NOT_CONNECTED;
-      goto cont;
-    }
-  e |= get_edid(this, crtc, output);
-  if (this->edid == NULL)
-    {
-      this->gamma_error = this->width_mm_edid_error = this->height_mm_edid_error = this->edid_error;
-      goto cont;
-    }
-  if ((fields & (LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID | LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID | LIBGAMMA_CRTC_INFO_GAMMA)))
-    e |= libgamma_parse_edid(this, fields);
-  
- cont:
-  e |= (fields & LIBGAMMA_CRTC_INFO_GAMMA_SIZE) ? get_gamma_ramp_size(this, crtc) : 0;
-  this->gamma_depth = 16;
-  e |= this->gamma_support_error = _E(LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT);
-  
-  /* Free the EDID after us. */
-  if (free_edid)
-    {
-      free(this->edid);
-      this->edid = NULL;
-    }
-  
-  free(output_info);
-  return e ? -1 : 0;
-#undef _E
-}
-
-
-/**
- * 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_randr_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this,
-					  libgamma_gamma_ramps_t* restrict ramps)
-{
-  xcb_connection_t* restrict connection = this->partition->site->data;
-  xcb_randr_get_crtc_gamma_cookie_t cookie;
-  xcb_randr_get_crtc_gamma_reply_t* restrict reply;
-  xcb_generic_error_t* error;
-  uint16_t* restrict red;
-  uint16_t* restrict green;
-  uint16_t* restrict blue;
-  
-#ifdef DEBUG
-  if ((ramps->red_size != ramps->green_size) ||
-      (ramps->red_size != ramps->blue_size))
-    return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE;
-#endif
-  
-  cookie = xcb_randr_get_crtc_gamma(connection, *(xcb_randr_crtc_t*)(this->data));
-  reply = xcb_randr_get_crtc_gamma_reply(connection, cookie, &error);
-  
-  if (error != NULL)
-    return translate_error(error->error_code, LIBGAMMA_GAMMA_RAMP_READ_FAILED, 0);
-  
-  red   = xcb_randr_get_crtc_gamma_red(reply);
-  green = xcb_randr_get_crtc_gamma_green(reply);
-  blue  = xcb_randr_get_crtc_gamma_blue(reply);
-  memcpy(ramps->red,   red,   ramps->red_size   * sizeof(uint16_t));
-  memcpy(ramps->green, green, ramps->green_size * sizeof(uint16_t));
-  memcpy(ramps->blue,  blue,  ramps->blue_size  * sizeof(uint16_t));
-  
-  free(reply);
-  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_randr_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this,
-					  libgamma_gamma_ramps_t ramps)
-{
-  xcb_connection_t* restrict connection = this->partition->site->data;
-  xcb_void_cookie_t cookie;
-  xcb_generic_error_t* restrict error;
-#ifdef DEBUG
-  if ((ramps.red_size != ramps.green_size) ||
-      (ramps.red_size != ramps.blue_size))
-    return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE;
-#endif
-  cookie = xcb_randr_set_crtc_gamma_checked(connection, *(xcb_randr_crtc_t*)(this->data),
-					    (uint16_t)(ramps.red_size), ramps.red, ramps.green, ramps.blue);
-  if ((error = xcb_request_check(connection, cookie)) != NULL)
-    return translate_error(error->error_code, LIBGAMMA_GAMMA_RAMP_WRITE_FAILED, 0);
-  return 0;
-}
-
-
-# pragma GCC diagnostic pop
-