Merge in the bridge_construction branch to make the system use the Bridging API.

Breaks many things until they can be reworked.  A partial list:
chan_agent
chan_dahdi, chan_misdn, chan_iax2 native bridging
app_queue
COLP updates
DTMF attended transfers
Protocol attended transfers


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@389378 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 191 insertions, 0 deletions

diff --git a/include/asterisk/core_unreal.h b/include/asterisk/core_unreal.h
new file mode 100644
index 000000000..7cb68f162
--- /dev/null
+++ b/include/asterisk/core_unreal.h
@@ -0,0 +1,191 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2013 Digium, Inc.
+ *
+ * Richard Mudgett <rmudgett@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 Unreal channel derivative framework.
+ *
+ * \author Richard Mudgett <rmudgett@digium.com>
+ *
+ * See Also:
+ * \arg \ref AstCREDITS
+ */
+
+#ifndef _ASTERISK_CORE_UNREAL_H
+#define _ASTERISK_CORE_UNREAL_H
+
+#include "asterisk/astobj2.h"
+#include "asterisk/channel.h"
+#include "asterisk/abstract_jb.h"
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+/* Forward declare some struct names */
+struct ast_format_cap;
+struct ast_callid;
+
+/* ------------------------------------------------------------------- */
+
+/*!
+ * \brief The base pvt structure for local channel derivatives.
+ *
+ * The unreal pvt has two ast_chan objects - the "owner" and the "next channel", the outbound channel
+ *
+ * ast_chan owner -> ast_unreal_pvt -> ast_chan chan
+ */
+struct ast_unreal_pvt {
+	struct ast_channel *owner;      /*!< Master Channel - ;1 side */
+	struct ast_channel *chan;       /*!< Outbound channel - ;2 side */
+	struct ast_format_cap *reqcap;  /*!< Requested format capabilities */
+	struct ast_jb_conf jb_conf;     /*!< jitterbuffer configuration */
+	unsigned int flags;             /*!< Private option flags */
+	/*! Base name of the unreal channels.  exten@context or other name. */
+	char name[AST_MAX_EXTENSION + AST_MAX_CONTEXT + 2];
+};
+
+#define AST_UNREAL_IS_OUTBOUND(a, b) ((a) == (b)->chan ? 1 : 0)
+
+#define AST_UNREAL_CARETAKER_THREAD (1 << 0) /*!< The ;2 side launched a PBX, was pushed into a bridge, or was masqueraded into an application. */
+#define AST_UNREAL_NO_OPTIMIZATION  (1 << 1) /*!< Do not optimize out the unreal channels */
+#define AST_UNREAL_MOH_INTERCEPT    (1 << 2) /*!< Intercept and act on hold/unhold control frames */
+
+/*!
+ * \brief Send an unreal pvt in with no locks held and get all locks
+ *
+ * \note NO locks should be held prior to calling this function
+ * \note The pvt must have a ref held before calling this function
+ * \note if outchan or outowner is set != NULL after calling this function
+ *       those channels are locked and reffed.
+ * \note Batman.
+ */
+void ast_unreal_lock_all(struct ast_unreal_pvt *p, struct ast_channel **outchan, struct ast_channel **outowner);
+
+/*!
+ * \brief Hangup one end (maybe both ends) of an unreal channel derivative.
+ * \since 12.0.0
+ *
+ * \param p Private channel struct (reffed)
+ * \param ast Channel being hung up.  (locked)
+ *
+ * \note Common hangup code for unreal channels.  Derived
+ * channels will need to deal with any additional resources.
+ *
+ * \retval 0 on success.
+ * \retval -1 on error.
+ */
+int ast_unreal_hangup(struct ast_unreal_pvt *p, struct ast_channel *ast);
+
+/*! Unreal channel framework struct ast_channel_tech.send_digit_begin callback */
+int ast_unreal_digit_begin(struct ast_channel *ast, char digit);
+
+/*! Unreal channel framework struct ast_channel_tech.send_digit_end callback */
+int ast_unreal_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
+
+/*! Unreal channel framework struct ast_channel_tech.answer callback */
+int ast_unreal_answer(struct ast_channel *ast);
+
+/*! Unreal channel framework struct ast_channel_tech.read and struct ast_channel_tech.exception callback */
+struct ast_frame *ast_unreal_read(struct ast_channel *ast);
+
+/*! Unreal channel framework struct ast_channel_tech.write callback */
+int ast_unreal_write(struct ast_channel *ast, struct ast_frame *f);
+
+/*! Unreal channel framework struct ast_channel_tech.indicate callback */
+int ast_unreal_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen);
+
+/*! Unreal channel framework struct ast_channel_tech.fixup callback */
+int ast_unreal_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
+
+/*! Unreal channel framework struct ast_channel_tech.send_html callback */
+int ast_unreal_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen);
+
+/*! Unreal channel framework struct ast_channel_tech.send_text callback */
+int ast_unreal_sendtext(struct ast_channel *ast, const char *text);
+
+/*! Unreal channel framework struct ast_channel_tech.queryoption callback */
+int ast_unreal_queryoption(struct ast_channel *ast, int option, void *data, int *datalen);
+
+/*! Unreal channel framework struct ast_channel_tech.setoption callback */
+int ast_unreal_setoption(struct ast_channel *chan, int option, void *data, int datalen);
+
+/*!
+ * \brief struct ast_unreal_pvt destructor.
+ * \since 12.0.0
+ *
+ * \param vdoomed Object to destroy.
+ *
+ * \return Nothing
+ */
+void ast_unreal_destructor(void *vdoomed);
+
+/*!
+ * \brief Allocate the base unreal struct for a derivative.
+ * \since 12.0.0
+ *
+ * \param size Size of the unreal struct to allocate.
+ * \param destructor Destructor callback.
+ * \param cap Format capabilities to give the unreal private struct.
+ *
+ * \retval pvt on success.
+ * \retval NULL on error.
+ */
+struct ast_unreal_pvt *ast_unreal_alloc(size_t size, ao2_destructor_fn destructor, struct ast_format_cap *cap);
+
+/*!
+ * \brief Create the semi1 and semi2 unreal channels.
+ * \since 12.0.0
+ *
+ * \param p Unreal channel private struct.
+ * \param tech Channel technology to use.
+ * \param semi1_state State to start the semi1(owner) channel in.
+ * \param semi2_state State to start the semi2(outgoing chan) channel in.
+ * \param exten Exten to start the chennels in. (NULL if s)
+ * \param context Context to start the channels in. (NULL if default)
+ * \param requestor Channel requesting creation. (NULL if none)
+ * \param callid Thread callid to use.
+ *
+ * \retval semi1_channel on success.
+ * \retval NULL on error.
+ */
+struct ast_channel *ast_unreal_new_channels(struct ast_unreal_pvt *p,
+	const struct ast_channel_tech *tech, int semi1_state, int semi2_state,
+	const char *exten, const char *context, const struct ast_channel *requestor,
+	struct ast_callid *callid);
+
+/*!
+ * \brief Setup unreal owner and chan channels before initiating call.
+ * \since 12.0.0
+ *
+ * \param semi1 Owner channel of unreal channel pair.
+ * \param semi2 Outgoing channel of unreal channel pair.
+ *
+ * \note On entry, the semi1 and semi2 channels are already locked.
+ *
+ * \return Nothing
+ */
+void ast_unreal_call_setup(struct ast_channel *semi1, struct ast_channel *semi2);
+
+/* ------------------------------------------------------------------- */
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif	/* _ASTERISK_CORE_UNREAL_H */