red-channel: Separate RedChannelCapabilities

Add function to initialize and destroy this type.
Add GType type for boxing it.
These changes a in preparation for next patch.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>

server/Makefile.am

@@ -101,6 +101,8 @@ libserver_la_SOURCES =				\
 	red-channel.h				\
 	red-channel-client.c			\
 	red-channel-client.h			\
+	red-channel-capabilities.c		\
+	red-channel-capabilities.h		\
 	red-client.c				\
 	red-client.h				\
 	red-common.h				\

server/red-channel-capabilities.c

@@ -0,0 +1,68 @@
+/*
+   Copyright (C) 2017 Red Hat, Inc.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <common/mem.h>
+#include <common/macros.h>
+
+#include "red-channel-capabilities.h"
+
+GType red_channel_capabilities_type;
+
+void red_channel_capabilities_init(RedChannelCapabilities *dest,
+                                   const RedChannelCapabilities *caps)
+{
+    *dest = *caps;
+    if (caps->common_caps) {
+        dest->common_caps = spice_memdup(caps->common_caps,
+                                         caps->num_common_caps * sizeof(uint32_t));
+    }
+    if (caps->num_caps) {
+        dest->caps = spice_memdup(caps->caps, caps->num_caps * sizeof(uint32_t));
+    }
+}
+
+void red_channel_capabilities_reset(RedChannelCapabilities *caps)
+{
+    free(caps->common_caps);
+    free(caps->caps);
+    memset(caps, 0, sizeof(*caps));
+}
+
+static RedChannelCapabilities *red_channel_capabilities_dup(const RedChannelCapabilities *caps)
+{
+    RedChannelCapabilities *res = spice_new(RedChannelCapabilities, 1);
+    red_channel_capabilities_init(res, caps);
+    return res;
+}
+
+static void red_channel_capabilities_free(RedChannelCapabilities *caps)
+{
+    red_channel_capabilities_reset(caps);
+    free(caps);
+}
+
+SPICE_CONSTRUCTOR_FUNC(red_channel_capabilities_construct)
+{
+    red_channel_capabilities_type =
+        g_boxed_type_register_static("red_channel_capabilities_type",
+                                     (GBoxedCopyFunc) red_channel_capabilities_dup,
+                                     (GBoxedFreeFunc) red_channel_capabilities_free);
+}

server/red-channel-capabilities.h

@@ -0,0 +1,51 @@
+/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+   Copyright (C) 2009-2017 Red Hat, Inc.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef RED_CHANNEL_CAPABILITIES_H_
+#define RED_CHANNEL_CAPABILITIES_H_
+
+#include <stdint.h>
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+/* Holds channel capabilities.
+ * Channel capabilities are composed by a common part
+ * and a specific one. */
+typedef struct RedChannelCapabilities {
+    int num_common_caps;
+    uint32_t *common_caps;
+    int num_caps;
+    uint32_t *caps;
+} RedChannelCapabilities;
+
+/* Initialize the structure based on a previous one. */
+void red_channel_capabilities_init(RedChannelCapabilities *dest,
+                                   const RedChannelCapabilities *caps);
+
+/* Reset capabilities.
+ * All resources are freed by this function. */
+void red_channel_capabilities_reset(RedChannelCapabilities *caps);
+
+/* GObject type that can be used to box RedChannelCapabilities */
+extern GType red_channel_capabilities_type;
+#define RED_TYPE_CHANNEL_CAPABILITIES red_channel_capabilities_type
+
+G_END_DECLS
+
+#endif

server/red-channel.h

@@ -34,6 +34,7 @@
 #include "reds-stream.h"
 #include "stat.h"
 #include "red-pipe-item.h"
+#include "red-channel-capabilities.h"
 
 G_BEGIN_DECLS
 
@@ -135,13 +136,6 @@ struct RedChannelClass
 
 /* Red Channel interface */
 
-typedef struct RedChannelCapabilities {
-    int num_common_caps;
-    uint32_t *common_caps;
-    int num_caps;
-    uint32_t *caps;
-} RedChannelCapabilities;
-
 GType red_channel_get_type(void) G_GNUC_CONST;
 
 void red_channel_add_client(RedChannel *channel, RedChannelClient *rcc);