* #36737: switch back to svn repo, remove assert in sip_transaction.c
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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_DOXYGEN_H__
+#define __PJMEDIA_DOXYGEN_H__
+
+/**
+ * @file doxygen.h
+ * @brief Doxygen's mainpage.
+ */
+
+
+/*////////////////////////////////////////////////////////////////////////// */
+/*
+ INTRODUCTION PAGE
+ */
+
+/**
+ * @mainpage PJMEDIA
+ *
+ * \n
+ * @section intro2 Introduction to PJMEDIA
+ *
+ * PJMEDIA is a fully featured media stack, distributed under Open Source/GPL
+ * terms, and featuring small footprint and good extensibility and excellent
+ * portability. Here are some brief overview of PJMEDIA benefits.
+ *
+ * @subsection benefit Benefits
+ * @subsubsection full_feature Many Features
+ * PJMEDIA has many features, and rather than to list them all here, please
+ * see the <A HREF="modules.htm"><b>Modules</b></A> page for more info.
+ *
+ * Video is planned to arrive at version 2.
+ *
+ * @subsubsection portable Excellent Portability
+ * It's been ported to all desktop systems and many mobile platforms including
+ * Symbian, Windows Mobile, iPhone, and Android. Thanks to its zero thread
+ * design, users have been able to run PJMEDIA on deeply embedded platforms,
+ * even without operating systems (those typically found in DSP platforms).
+ * Except the echo suppressor, all other PJMEDIA components have fixed point
+ * implementation, which makes it ideal for embedded systems which lack FPU.
+ * PJMEDIA also has tiny footprint, as explained below
+ *
+ * @subsubsection footprint Tiny Footprint
+ * Lets not talk about less meaningful and potentially misleading term such as
+ * core footprint, and instead here is the footprint of all components
+ * typically used to build a full streaming media:
+ *
+ * \verbatim
+Category Component text data bss dec filename
+-------------------------------------------------------------------------------
+Core Error subsystem 135 0 0 135 errno.o
+Core Endpoint 4210 4 4 4218 endpoint.o
+Core Port framework 652 0 0 652 port.o
+Core Codec framework 6257 0 0 6257 codec.o
+Codec Alaw/ulaw conv. 1060 16 0 1076 alaw_ulaw.o
+Codec G.711 3298 128 96 3522 g711.o
+Codec PLC 883 24 0 907 plc_common.o
+Codec PLC 7130 0 0 7130 wsola.o
+Session Stream 12222 0 1920 14142 stream.o
+Transport RTCP 3732 0 0 3732 rtcp.o
+Transport RTP 2568 0 0 2568 rtp.o
+Transport UDP 6612 96 0 6708 transport_udp.o
+Transport Jitter buffer 6473 0 0 6473 jbuf.o
+-------------------------------------------------------------------------------
+TOTAL 55,232 268 2,020 57,520
+
+ \endverbatim
+ * The 56KB are for media streaming components, complete with codec, RTP, and
+ * RTCP. The footprint above was done for PJSIP version 1.8.2 on a Linux x86
+ * machine, using footprintopimization as explained in PJSIP FAQ. Numbers are
+ * in bytes.
+ *
+ * @subsubsection quality Good Quality
+ * PJMEDIA supports wideband, ultra-wideband, and beyond, as well as multiple
+ * audio channels. The jitter buffer has been proven to work on lower
+ * bandwidth links such as 3G, and to some extent, Edge and GPRS. We've grown
+ * our own algorithm to compensate for packet losses and clock drifts in audio
+ * transmission, as well as feature to use codec's built in PLC if available.
+ *
+ * @subsubsection hw Hardware Support
+ * PJMEDIA supports hardware, firmware, or other built-in feature that comes
+ * with the device. These are crucial for mobile devices to allow the best
+ * use of the very limited CPU and battery power of the device. Among other
+ * things, device's on-board codec and echo cancellation may be used if
+ * available.
+ *
+ * @subsubsection extensible Extensible
+ * Despite its tiny footprint, PJMEDIA uses a flexible port concept, which is
+ * adapted from filter based concept found in other media framework. It is not
+ * as flexible as those found in Direct Show or gstreamer (and that would be
+ * unnecessary since it serves different purpose), but it's flexible enough
+ * to allow components to be assembled one after another to achieve certain
+ * task, and easy creation of such components by application and interconnect
+ * them to the rest of the framework.
+ *
+ * @subsubsection doc (Fairly Okay) Documentation
+ * We understand that any documentation can always be improved, but we put
+ * a lot of efforts in creating and maintaining our documentation, because
+ * we know it matters.
+ *
+ * \n
+ * @subsection org1 Organization
+ *
+ * At the top-most level, PJMEDIA library suite contains the following
+ * libraries.
+ *
+ * @subsubsection libpjmedia PJMEDIA
+ * This contains all main media components. Please see the
+ * <A HREF="modules.htm"><b>Modules</b></A> page for complete list of
+ * components that PJMEDIA provides.
+ *
+ * @subsubsection libpjmediacodec PJMEDIA Codec
+ * PJMEDIA-CODEC is a static library containing various codec implementations,
+ * wrapped into PJMEDIA codec framework. The static library is designed as
+ * such so that only codecs that are explicitly initialized are linked with
+ * the application, therefore keeping the application size in control.
+ *
+ * Please see @ref PJMEDIA_CODEC for more info.
+ *
+ * @subsubsection libpjmediaaudiodev PJMEDIA Audio Device
+ * PJMEDIA-Audiodev is audio device framework and abstraction library. Please
+ * see @ref audio_device_api for more info.
+ *
+ * \n
+ * @section pjmedia_concepts PJMEDIA Key Concepts
+ * Below are some key concepts in PJMEDIA:
+ * - @ref PJMEDIA_PORT
+ * - @ref PJMEDIA_PORT_CLOCK
+ * - @ref PJMEDIA_TRANSPORT
+ * - @ref PJMEDIA_SESSION
+ */
+
+
+/**
+ @page page_pjmedia_samples PJMEDIA and PJMEDIA-CODEC Examples
+
+ @section pjmedia_samples_sec PJMEDIA and PJMEDIA-CODEC Examples
+
+ Please find below some PJMEDIA related examples that may help in giving
+ some more info:
+
+ - @ref page_pjmedia_samples_level_c\n
+ This is a good place to start learning about @ref PJMEDIA_PORT,
+ as it shows that @ref PJMEDIA_PORT are only "passive" objects
+ with <tt>get_frame()</tt> and <tt>put_frame()</tt> interface, and
+ someone has to call these to retrieve/store media frames.
+
+ - @ref page_pjmedia_samples_playfile_c\n
+ This example shows that when application connects a media port (in this
+ case a @ref PJMEDIA_FILE_PLAY) to @ref PJMED_SND_PORT, media will flow
+ automatically since the @ref PJMED_SND_PORT provides @ref PJMEDIA_PORT_CLOCK.
+
+ - @ref page_pjmedia_samples_recfile_c\n
+ Demonstrates how to capture audio from microphone to WAV file.
+
+ - @ref page_pjmedia_samples_playsine_c\n
+ Demonstrates how to create a custom @ref PJMEDIA_PORT (in this
+ case a sine wave generator) and integrate it to PJMEDIA.
+
+ - @ref page_pjmedia_samples_confsample_c\n
+ This demonstrates how to use the @ref PJMEDIA_CONF. The sample program can
+ open multiple WAV files, and instruct the conference bridge to mix the
+ signal before playing it to the sound device.
+
+ - @ref page_pjmedia_samples_confbench_c\n
+ I use this to benchmark/optimize the conference bridge algorithm, but
+ readers may find the source useful.
+
+ - @ref page_pjmedia_samples_resampleplay_c\n
+ Demonstrates how to use @ref PJMEDIA_RESAMPLE_PORT to change the
+ sampling rate of a media port (in this case, a @ref PJMEDIA_FILE_PLAY).
+
+ - @ref page_pjmedia_samples_sndtest_c\n
+ This program performs some tests to the sound device to get some
+ quality parameters (such as sound jitter and clock drifts).\n
+ Screenshots on WinXP: \image html sndtest.jpg "sndtest screenshot on WinXP"
+
+ - @ref page_pjmedia_samples_streamutil_c\n
+ This example mainly demonstrates how to stream media (in this case a
+ @ref PJMEDIA_FILE_PLAY) to remote peer using RTP.
+
+ - @ref page_pjmedia_samples_siprtp_c\n
+ This is a useful program (integrated with PJSIP) to actively measure
+ the network quality/impairment parameters by making one or more SIP
+ calls (or receiving one or more SIP calls) and display the network
+ impairment of each stream direction at the end of the call.
+ The program is able to measure network quality parameters such as
+ jitter, packet lost/reorder/duplicate, round trip time, etc.\n
+ Note that the remote peer MUST support RTCP so that network quality
+ of each direction can be calculated. Using siprtp for both endpoints
+ is recommended.\n
+ Screenshots on WinXP: \image html siprtp.jpg "siprtp screenshot on WinXP"
+
+ - @ref page_pjmedia_samples_tonegen_c\n
+ This is a simple program to generate a tone and write the samples to
+ a raw PCM file. The main purpose of this file is to analyze the
+ quality of the tones/sine wave generated by PJMEDIA tone/sine wave
+ generator.
+
+ - @ref page_pjmedia_samples_aectest_c\n
+ Play a file to speaker, run AEC, and record the microphone input
+ to see if echo is coming.
+ */
+
+/**
+ * \page page_pjmedia_samples_siprtp_c Samples: Using SIP and Custom RTP/RTCP to Monitor Quality
+ *
+ * This source is an example to demonstrate using SIP and RTP/RTCP framework
+ * to measure the network quality/impairment from the SIP call. This
+ * program can be used to make calls or to receive calls from other
+ * SIP endpoint (or other siprtp program), and to display the media
+ * quality statistics at the end of the call.
+ *
+ * Note that the remote peer must support RTCP.
+ *
+ * The layout of the program has been designed so that custom reporting
+ * can be generated instead of plain human readable text.
+ *
+ * The source code of the file is pjsip-apps/src/samples/siprtp.c
+ *
+ * Screenshots on WinXP: \image html siprtp.jpg
+ *
+ * \includelineno siprtp.c
+ */
+
+#endif /* __PJMEDIA_DOXYGEN_H__ */
+