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+/* $Id$ */
+/* 
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#ifndef __PJMEDIA_MEDIAMGR_H__
+#define __PJMEDIA_MEDIAMGR_H__
+
+
+/**
+ * @file endpoint.h
+ * @brief Media endpoint.
+ */
+/**
+ * @defgroup PJMED_ENDPT The Endpoint
+ * @{
+ *
+ * The media endpoint acts as placeholder for endpoint capabilities. Each 
+ * media endpoint will have a codec manager to manage list of codecs installed
+ * in the endpoint and a sound device factory.
+ *
+ * A reference to media endpoint instance is required when application wants
+ * to create a media session (#pjmedia_session_create()).
+ */
+
+#include <pjmedia/codec.h>
+#include <pjmedia/sdp.h>
+#include <pjmedia/transport.h>
+
+
+PJ_BEGIN_DECL
+
+/**
+ * This enumeration describes various flags that can be set or retrieved in
+ * the media endpoint, by using pjmedia_endpt_set_flag() and
+ * pjmedia_endpt_get_flag() respectively.
+ */
+typedef enum pjmedia_endpt_flag
+{
+    /**
+     * This flag controls whether telephony-event should be offered in SDP.
+     * Value is boolean.
+     */
+    PJMEDIA_ENDPT_HAS_TELEPHONE_EVENT_FLAG
+
+} pjmedia_endpt_flag;
+
+
+/**
+ * Type of callback to register to pjmedia_endpt_atexit().
+ */
+typedef void (*pjmedia_endpt_exit_callback)(pjmedia_endpt *endpt);
+
+
+/**
+ * Create an instance of media endpoint.
+ *
+ * @param pf		Pool factory, which will be used by the media endpoint
+ *			throughout its lifetime.
+ * @param ioqueue	Optional ioqueue instance to be registered to the 
+ *			endpoint. The ioqueue instance is used to poll all RTP
+ *			and RTCP sockets. If this argument is NULL, the 
+ *			endpoint will create an internal ioqueue instance.
+ * @param worker_cnt	Specify the number of worker threads to be created
+ *			to poll the ioqueue.
+ * @param p_endpt	Pointer to receive the endpoint instance.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_create( pj_pool_factory *pf,
+					   pj_ioqueue_t *ioqueue,
+					   unsigned worker_cnt,
+					   pjmedia_endpt **p_endpt);
+
+/**
+ * Destroy media endpoint instance.
+ *
+ * @param endpt		Media endpoint instance.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_destroy(pjmedia_endpt *endpt);
+
+/**
+ * Change the value of a flag.
+ *
+ * @param endpt		Media endpoint.
+ * @param flag		The flag.
+ * @param value		Pointer to the value to be set.
+ *
+ * @reurn		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_set_flag(pjmedia_endpt *endpt,
+					    pjmedia_endpt_flag flag,
+					    const void *value);
+
+/**
+ *  Retrieve the value of a flag.
+ *
+ *  @param endpt	Media endpoint.
+ *  @param flag		The flag.
+ *  @param value	Pointer to store the result.
+ *
+ *  @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_get_flag(pjmedia_endpt *endpt,
+					    pjmedia_endpt_flag flag,
+					    void *value);
+
+/**
+ * Get the ioqueue instance of the media endpoint.
+ *
+ * @param endpt		The media endpoint instance.
+ *
+ * @return		The ioqueue instance of the media endpoint.
+ */
+PJ_DECL(pj_ioqueue_t*) pjmedia_endpt_get_ioqueue(pjmedia_endpt *endpt);
+
+
+/**
+ * Get the number of worker threads on the media endpoint
+ *
+ * @param endpt		The media endpoint instance.
+ * @return		The number of worker threads on the media endpoint
+ */
+PJ_DECL(unsigned) pjmedia_endpt_get_thread_count(pjmedia_endpt *endpt);
+
+/**
+ * Get a reference to one of the worker threads of the media endpoint 
+ *
+ * @param endpt		The media endpoint instance.
+ * @param index		The index of the thread: 0<= index < thread_cnt
+ *
+ * @return		pj_thread_t or NULL
+ */
+PJ_DECL(pj_thread_t*) pjmedia_endpt_get_thread(pjmedia_endpt *endpt, 
+					       unsigned index);
+
+/**
+ * Stop and destroy the worker threads of the media endpoint
+ *
+ * @param endpt		The media endpoint instance.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_stop_threads(pjmedia_endpt *endpt);
+
+
+/**
+ * Request the media endpoint to create pool.
+ *
+ * @param endpt		The media endpoint instance.
+ * @param name		Name to be assigned to the pool.
+ * @param initial	Initial pool size, in bytes.
+ * @param increment	Increment size, in bytes.
+ *
+ * @return		Memory pool.
+ */
+PJ_DECL(pj_pool_t*) pjmedia_endpt_create_pool( pjmedia_endpt *endpt,
+					       const char *name,
+					       pj_size_t initial,
+					       pj_size_t increment);
+
+/**
+ * Get the codec manager instance of the media endpoint.
+ *
+ * @param endpt		The media endpoint instance.
+ *
+ * @return		The instance of codec manager belonging to
+ *			this media endpoint.
+ */
+PJ_DECL(pjmedia_codec_mgr*) pjmedia_endpt_get_codec_mgr(pjmedia_endpt *endpt);
+
+
+/**
+ * Create a SDP session description that describes the endpoint
+ * capability.
+ *
+ * @param endpt		The media endpoint.
+ * @param pool		Pool to use to create the SDP descriptor.
+ * @param stream_cnt	Number of elements in the sock_info array. This
+ *			also denotes the maximum number of streams (i.e.
+ *			the "m=" lines) that will be created in the SDP.
+ *			By convention, if this value is greater than one,
+ *			the first media will be audio and the remaining
+ *			media is video.
+ * @param sock_info	Array of socket transport information. One 
+ *			transport is needed for each media stream, and
+ *			each transport consists of an RTP and RTCP socket
+ *			pair.
+ * @param p_sdp		Pointer to receive SDP session descriptor.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_create_sdp( pjmedia_endpt *endpt,
+					       pj_pool_t *pool,
+					       unsigned stream_cnt,
+					       const pjmedia_sock_info sock_info[],
+					       pjmedia_sdp_session **p_sdp );
+
+/**
+ * Create a "blank" SDP session description. The SDP will contain basic SDP
+ * fields such as origin, time, and name, but without any media lines.
+ *
+ * @param endpt		The media endpoint.
+ * @param pool		Pool to allocate memory from.
+ * @param sess_name	Optional SDP session name, or NULL to use default
+ * 			value.
+ * @param origin	Address to put in the origin field.
+ * @param p_sdp		Pointer to receive the created SDP session.
+ *
+ * @return		PJ_SUCCESS on success, or the appropriate error code.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_create_base_sdp(pjmedia_endpt *endpt,
+						   pj_pool_t *pool,
+						   const pj_str_t *sess_name,
+						   const pj_sockaddr *origin,
+						   pjmedia_sdp_session **p_sdp);
+
+/**
+ * Create SDP media line for audio media.
+ *
+ * @param endpt		The media endpoint.
+ * @param pool		Pool to allocate memory from.
+ * @param si		Socket information.
+ * @param options	Option flags, must be zero for now.
+ * @param p_m		Pointer to receive the created SDP media.
+ *
+ * @return		PJ_SUCCESS on success, or the appropriate error code.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_create_audio_sdp(pjmedia_endpt *endpt,
+                                                    pj_pool_t *pool,
+                                                    const pjmedia_sock_info*si,
+                                                    unsigned options,
+                                                    pjmedia_sdp_media **p_m);
+
+/**
+ * Create SDP media line for video media.
+ *
+ * @param endpt		The media endpoint.
+ * @param pool		Pool to allocate memory from.
+ * @param si		Socket information.
+ * @param options	Option flags, must be zero for now.
+ * @param p_m		Pointer to receive the created SDP media.
+ *
+ * @return		PJ_SUCCESS on success, or the appropriate error code.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_create_video_sdp(pjmedia_endpt *endpt,
+                                                    pj_pool_t *pool,
+                                                    const pjmedia_sock_info*si,
+                                                    unsigned options,
+                                                    pjmedia_sdp_media **p_m);
+
+/**
+ * Dump media endpoint capabilities.
+ *
+ * @param endpt		The media endpoint.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_dump(pjmedia_endpt *endpt);
+
+
+/**
+ * Register cleanup function to be called by media endpoint when 
+ * #pjmedia_endpt_destroy() is called. Note that application should not
+ * use or access any endpoint resource (such as pool, ioqueue) from within
+ * the callback as such resource may have been released when the callback
+ * function is invoked.
+ *
+ * @param endpt		The media endpoint.
+ * @param func		The function to be registered.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_endpt_atexit(pjmedia_endpt *endpt,
+					  pjmedia_endpt_exit_callback func);
+
+
+
+PJ_END_DECL
+
+
+/**
+ * @}
+ */
+
+
+
+#endif	/* __PJMEDIA_MEDIAMGR_H__ */