Remove dead code from features.c; refactor pickup code into pickup.c

This patch does the following:
 * It moves the pickup code out of features.c and into pickup.c
 * It removes the vast majority of dead code out of features.c. In particular,
   this includes the parking code.

(issue ASTERISK-22134)



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@396060 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 91 insertions, 0 deletions

diff --git a/include/asterisk/pickup.h b/include/asterisk/pickup.h
new file mode 100644
index 000000000..de5c8961e
--- /dev/null
+++ b/include/asterisk/pickup.h
@@ -0,0 +1,91 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2013, Digium, Inc.
+ *
+ * Matt Jordan <mjordan@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*!
+ * \file
+ * \brief Call Pickup API
+ *
+ * Includes code and algorithms from the Zapata library.
+ *
+ */
+
+#ifndef _AST_FEATURES_H
+#define _AST_FEATURES_H
+
+/*!
+ * \brief Test if a channel can be picked up.
+ *
+ * \param chan Channel to test if can be picked up.
+ *
+ * \note This function assumes that chan is locked.
+ *
+ * \return TRUE if channel can be picked up.
+ */
+int ast_can_pickup(struct ast_channel *chan);
+
+/*!
+ * \brief Find a pickup channel target by group.
+ *
+ * \param chan channel that initiated pickup.
+ *
+ * \retval target on success.  The returned channel is locked and reffed.
+ * \retval NULL on error.
+ */
+struct ast_channel *ast_pickup_find_by_group(struct ast_channel *chan);
+
+/*!
+ * \brief Pickup a call
+ *
+ * \param chan The channel that initiated the pickup
+ *
+ * \retval 0 on success
+ * \retval -1 on failure
+ */
+int ast_pickup_call(struct ast_channel *chan);
+
+/*!
+ * \brief Pickup a call target.
+ *
+ * \param chan channel that initiated pickup.
+ * \param target channel to be picked up.
+ *
+ * \note This function assumes that target is locked.
+ *
+ * \retval 0 on success.
+ * \retval -1 on failure.
+ */
+int ast_do_pickup(struct ast_channel *chan, struct ast_channel *target);
+
+/*!
+ * \brief accessor for call pickup message type
+ * \since 12.0.0
+ *
+ * \retval pointer to the stasis message type
+ * \retval NULL if not initialized
+ */
+struct stasis_message_type *ast_call_pickup_type(void);
+
+/*!
+ * \brief Initialize pickup
+ *
+ * \retval 0 on success
+ * \retval non-zero on failure
+ */
+int ast_pickup_init(void);
+
+#endif /* _AST_FEATURES_H */