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资源说明：App that will mix and play audio from multiple client streams
******************************************************************************* * _____ _ _ _ _ * | ____|_ __ ___ | |__ ___ __| | __| | ___ __| | * | _| | '_ ` _ \| '_ \ / _ \/ _` |/ _` |/ _ \/ _` | * | |___| | | | | | |_) | __/ (_| | (_| | __/ (_| | * |_____|_| |_| |_|_.__/ \___|\__,_|\__,_|\___|\__,_| * __ __ _ _ _ _ _ * | \/ |_ _| | |_(_) ___| |__ __ _ _ __ _ __ ___| | * | |\/| | | | | | __| |/ __| '_ \ / _` | '_ \| '_ \ / _ \ | * | | | | |_| | | |_| | (__| | | | (_| | | | | | | | __/ | * |_| |_|\__,_|_|\__|_|\___|_| |_|\__,_|_| |_|_| |_|\___|_| * __ __ _ * | \/ (_)__ __ ___ _ __ * | |\/| | |\ \/ // _ \ '__| * | | | | | > <| __/ | * |_| |_|_|/_/\_\\___|_| * ******************************************************************************* * Author: Christopher Thomas * Term Project * ECE 554 - Embedded Systems * University of Michigan - Dearborn * chrtho@umd.umich.edu ******************************************************************************* * LICENSING INFORMATION * 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 ******************************************************************************* * * GENERAL * The aim of this project was to implement an audio mixer that runs on an embedded * target and allows for multiple wireless streams to be mixed and outputted. * This software was written with the intent to provide a clean, object-oriented, * open source approach to the problem at hand. It runs on the desktop and * arm-based linux environments and utilized the alsa library for device-specific * playback. The client-handling and mixing code was written custom for this project. * ******************************************************************************* * * BUILDING * To build this software, there are some dependencies and assumptions that are made. * You will need all of the following in order to be able to build this software: * >Build System: scons * >Libraries: libpthread, librt, libglib-2.0, libasound2 * >OS: Ubuntu Linux version 10.10 on i386 and 10.04 on pandaboard * * In order to build both the audio_mixing_server and audio_client binaries, simply * issue the command scons in the root of this code distribution. * ******************************************************************************* * * RUNNING * This software, both audio_mixing_server and audio_client are usable on linux-based * i386 and ARM-based environments. The system running the server will need some sort * of network interface available, at least the loopback, in order to work. * * Start the server by executing: * >./build/audio_mixing_server * * Start a client by executing: * >./build/audio_client SOME_WAV_FILE IP_OF_SERVER 22000 * (ie ./build/audio_client test.wav localhost 22000) * (ie ./build/audio_client test.wav 192.168.0.1 22000) * * The client will connect to the server and stream audio if it is accessible. * Otherwise, an exception is thrown and a meaningful error printed. * ******************************************************************************* * * OPEN SOURCE CREDITS * This project utilized open source software in order to achieve a viable end product. * Credit is due to the following: * >Sockets: Practical C++ Sockets implementation from a Baylor Professor obtainable from: * http://cs.baylor.edu/~donahoo/practical/CSockets/practical/ * >Linux: Ubuntu Linux was used as both the development and production environments. * Ubuntu for i386 is obtainable from: http://www.ubuntu.com/ * Ubuntu for pandaboard is obtainable from: http://www.omappedia.org/wiki/OMAP_Ubuntu_Main * *******************************************************************************
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