More refactoring

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 129 insertions, 0 deletions

diff --git a/src/servers/crtc.c b/src/servers/crtc.c
new file mode 100644
index 0000000..2e884a8
--- /dev/null
+++ b/src/servers/crtc.c
@@ -0,0 +1,129 @@
+/**
+ * coopgammad -- Cooperative gamma server
+ * Copyright (C) 2016  Mattias Andrée (maandree@kth.se)
+ * 
+ * This program 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 program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "crtc.h"
+#include "../state.h"
+#include "../communication.h"
+
+#include <errno.h>
+#include <string.h>
+
+
+
+/**
+ * Handle a ‘Command: enumerate-crtcs’ message
+ * 
+ * @param   conn        The index of the connection
+ * @param   message_id  The value of the ‘Message ID’ header
+ * @return              Zero on success (even if ignored), -1 on error,
+ *                      1 if connection closed
+ */
+int handle_enumerate_crtcs(size_t conn, const char* restrict message_id)
+{
+  size_t i, n = 0, len;
+  char* restrict buf;
+  
+  for (i = 0; i < outputs_n; i++)
+    n += strlen(outputs[i].name) + 1;
+  
+  MAKE_MESSAGE(&buf, &n, 0,
+	       "Command: crtc-enumeration\n"
+	       "In response to: %s\n"
+	       "Length: %zu\n"
+	       "\n",
+	       message_id, n);
+  
+  for (i = 0; i < outputs_n; i++)
+    {
+      len = strlen(outputs[i].name);
+      memcpy(buf + n, outputs[i].name, len);
+      buf[n + len] = '\n';
+      n += len + 1;
+    }
+  
+  return send_message(conn, buf, n);
+}
+
+
+/**
+ * Get the name of a CRTC
+ * 
+ * @param   info  Information about the CRTC
+ * @param   crtc  libgamma's state for the CRTC
+ * @return        The name of the CRTC, `NULL` on error
+ */
+char* get_crtc_name(const libgamma_crtc_information_t* restrict info,
+		    const libgamma_crtc_state_t* restrict crtc)
+{
+  if ((info->edid_error == 0) && (info->edid != NULL))
+    return libgamma_behex_edid(info->edid, info->edid_length);
+  else if ((info->connector_name_error == 0) && (info->connector_name != NULL))
+    {
+      char* name = malloc(3 * sizeof(size_t) + strlen(info->connector_name) + 2);
+      if (name != NULL)
+	sprintf(name, "%zu.%s", crtc->partition->partition, info->connector_name);
+      return name;
+    }
+  else
+    {
+      char* name = malloc(2 * 3 * sizeof(size_t) + 2);
+      if (name != NULL)
+	sprintf(name, "%zu.%zu", crtc->partition->partition, crtc->crtc);
+      return name;
+    }
+}
+
+
+/**
+ * Get partitions and CRTC:s
+ * 
+ * @return   Zero on success, -1 on error
+ */
+int initialise_crtcs(void)
+{
+  size_t i, j, n, n0;
+  int gerror;
+  
+  /* Get partitions */
+  if (site.partitions_available)
+    if (!(partitions = calloc(site.partitions_available, sizeof(*partitions))))
+      goto fail;
+  for (i = 0; i < site.partitions_available; i++)
+    {
+      if ((gerror = libgamma_partition_initialise(partitions + i, &site, i)))
+	goto fail_libgamma;
+      outputs_n += partitions[i].crtcs_available;
+    }
+  
+  /* Get CRTC:s */
+  if (outputs_n)
+    if (!(crtcs = calloc(outputs_n, sizeof(*crtcs))))
+      goto fail;
+  for (i = 0, j = n = 0; i < site.partitions_available; i++)
+    for (n0 = n, n += partitions[i].crtcs_available; j < n; j++)
+      if ((gerror = libgamma_crtc_initialise(crtcs + j, partitions + i, j - n0)))
+	goto fail_libgamma;
+  
+  return 0;
+  
+ fail_libgamma:
+  libgamma_perror(argv0, gerror);
+  errno = 0;
+ fail:
+  return -1;
+}
+