Restructure

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

2 files changed, 219 insertions, 0 deletions

diff --git a/src/gamma-server/server.c b/src/gamma-server/server.c
new file mode 100644
index 0000000..b6ec852
--- /dev/null
+++ b/src/gamma-server/server.c
@@ -0,0 +1,144 @@
+/**
+ * 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 "server.h"
+#include "../state.h"
+#include "../communication.h"
+
+#include <string.h>
+
+
+
+#if defined(__clang__)
+# pragma GCC diagnostic ignored "-Wswitch-enum"
+#endif
+
+
+
+/**
+ * Handle a ‘Command: set-gamma’ message
+ * 
+ * @param   conn        The index of the connection
+ * @param   message_id  The value of the ‘Message ID’ header
+ * @param   crtc        The value of the ‘CRTC’ header
+ * @return              Zero on success (even if ignored), -1 on error,
+ *                      1 if connection closed
+ */
+int handle_get_gamma_info(size_t conn, const char* restrict message_id, const char* restrict crtc)
+{
+  struct output* restrict output;
+  char* restrict buf;
+  char depth[3];
+  const char* supported;
+  size_t n;
+  
+  if (crtc == NULL)  return send_error("protocol error: 'CRTC' header omitted");
+  
+  output = output_find_by_name(crtc, outputs, outputs_n);
+  if (output == NULL)
+    return send_error("selected CRTC does not exist");
+  
+  switch (output->depth)
+    {
+    case -2:  strcpy(depth, "d");  break;
+    case -1:  strcpy(depth, "f");  break;
+    default:
+      sprintf(depth, "%i", output->depth);
+      break;
+    }
+  
+  switch (output->supported)
+    {
+    case LIBGAMMA_YES:    supported = "yes";    break;
+    case LIBGAMMA_NO:     supported = "no";     break;
+    default:              supported = "maybe";  break;
+    }
+  
+  MAKE_MESSAGE(&buf, &n, 0,
+	       "In response to: %s\n"
+	       "Cooperative: yes\n" /* In mds: say ‘no’, mds-coopgamma changes to ‘yes’.” */
+	       "Depth: %s\n"
+	       "Red size: %zu\n"
+	       "Green size: %zu\n"
+	       "Blue size: %zu\n"
+	       "Gamma support: %s\n"
+	       "\n",
+	       message_id, depth, output->red_size, output->green_size,
+	       output->blue_size, supported);
+  
+  return send_message(conn, buf, n);
+}
+
+
+/**
+ * Set the gamma ramps on an output
+ * 
+ * @param  output  The output
+ * @param  ramps   The gamma ramps
+ */
+void set_gamma(const struct output* restrict output, const union gamma_ramps* restrict ramps)
+{
+  int r = 0;
+  
+  if (connected)
+    {
+      switch (output->depth)
+	{
+	case  8:  r = libgamma_crtc_set_gamma_ramps8(output->crtc,  ramps->u8);   break;
+	case 16:  r = libgamma_crtc_set_gamma_ramps16(output->crtc, ramps->u16);  break;
+	case 32:  r = libgamma_crtc_set_gamma_ramps32(output->crtc, ramps->u32);  break;
+	case 64:  r = libgamma_crtc_set_gamma_ramps64(output->crtc, ramps->u64);  break;
+	case -1:  r = libgamma_crtc_set_gamma_rampsf(output->crtc,  ramps->f);    break;
+	case -2:  r = libgamma_crtc_set_gamma_rampsd(output->crtc,  ramps->d);    break;
+	default:
+	  abort();
+	}
+      if (r)
+	libgamma_perror(argv0, r); /* Not fatal */
+    }
+}
+
+
+/**
+ * Disconnect from the site
+ * 
+ * @return  Zero on success, -1 on error
+ */
+int disconnect(void)
+{
+  if (!connected)
+    return 0;
+  
+  connected = 0;
+  return 0; /* TODO disconnect() */
+}
+
+
+/**
+ * Reconnect to the site
+ * 
+ * @return  Zero on success, -1 on error
+ */
+int reconnect(void)
+{
+  if (connected)
+    return 0;
+  
+  connected = 1;
+  return 0; /* TODO reconnect() */
+}
+
diff --git a/src/gamma-server/server.h b/src/gamma-server/server.h
new file mode 100644
index 0000000..b84a836
--- /dev/null
+++ b/src/gamma-server/server.h
@@ -0,0 +1,75 @@
+/**
+ * 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/>.
+ */
+#ifndef GAMMA_SERVER_SERVER_H
+#define GAMMA_SERVER_SERVER_H
+
+
+#include "../types/output.h"
+
+#include <stddef.h>
+
+
+
+#ifndef GCC_ONLY
+# if defined(__GNUC__) && !defined(__clang__)
+#  define GCC_ONLY(...)  __VA_ARGS__
+# else
+#  define GCC_ONLY(...)  /* nothing */
+# endif
+#endif
+
+
+
+/**
+ * Handle a ‘Command: set-gamma’ message
+ * 
+ * @param   conn        The index of the connection
+ * @param   message_id  The value of the ‘Message ID’ header
+ * @param   crtc        The value of the ‘CRTC’ header
+ * @return              Zero on success (even if ignored), -1 on error,
+ *                      1 if connection closed
+ */
+GCC_ONLY(__attribute__((nonnull(2))))
+int handle_get_gamma_info(size_t conn, const char* restrict message_id, const char* restrict crtc);
+
+/**
+ * Set the gamma ramps on an output
+ * 
+ * @param  output  The output
+ * @param  ramps   The gamma ramps
+ */
+GCC_ONLY(__attribute__((nonnull)))
+void set_gamma(const struct output* restrict output, const union gamma_ramps* restrict ramps);
+
+/**
+ * Disconnect from the site
+ * 
+ * @return  Zero on success, -1 on error
+ */
+int disconnect(void);
+
+/**
+ * Reconnect to the site
+ * 
+ * @return  Zero on success, -1 on error
+ */
+int reconnect(void);
+
+
+#endif
+