/* $Id: aectest.c 974 2007-02-19 01:13:53Z bennylp $ *//*  * Copyright (C) 2003-2007 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  *//** * \page page_pjmedia_samples_aectest_c Samples: AEC Test (aectest.c) * * Play a file to speaker, run AEC, and record the microphone input * to see if echo is coming. * * This file is pjsip-apps/src/samples/aectest.c * * \includelineno aectest.c */#include <pjmedia.h>#include <pjlib-util.h>	/* pj_getopt */#include <pjlib.h>/* For logging purpose. */#define THIS_FILE   "playfile.c"#define PTIME	    20#define TAIL_LENGTH 800static const char *desc = " FILE		    						    \n""		    						    \n""  aectest.c	    						    \n""		    						    \n"" PURPOSE	    						    \n""		    						    \n""  Test the AEC effectiveness.					    \n""		    						    \n"" USAGE		    						    \n""		    						    \n""  aectest INPUT.WAV OUTPUT.WAV					    \n""		    						    \n""  INPUT.WAV is the file to be played to the speaker.		    \n""  OUTPUT.WAV is the output file containing recorded signal from the\n""  microphone.";static void app_perror(const char *sender, const char *title, pj_status_t st){    char errmsg[PJ_ERR_MSG_SIZE];    pj_strerror(st, errmsg, sizeof(errmsg));    PJ_LOG(3,(sender, "%s: %s", title, errmsg));}/* * main() */int main(int argc, char *argv[]){    pj_caching_pool cp;    pjmedia_endpt *med_endpt;    pj_pool_t	  *pool;    pjmedia_port  *play_port;    pjmedia_port  *rec_port;    pjmedia_port  *bidir_port;    pjmedia_snd_port *snd;    char tmp[10];    pj_status_t status;    if (argc != 3) {    	puts("Error: arguments required");	puts(desc);	return 1;    }    /* Must init PJLIB first: */    status = pj_init();    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);    /* Must create a pool factory before we can allocate any memory. */    pj_caching_pool_init(&cp, &pj_pool_factory_default_policy, 0);    /*      * Initialize media endpoint.     * This will implicitly initialize PJMEDIA too.     */    status = pjmedia_endpt_create(&cp.factory, NULL, 1, &med_endpt);    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);    /* Create memory pool for our file player */    pool = pj_pool_create( &cp.factory,	    /* pool factory	    */			   "wav",	    /* pool name.	    */			   4000,	    /* init size	    */			   4000,	    /* increment size	    */			   NULL		    /* callback on error    */			   );    /* Create file media port from the WAV file */    status = pjmedia_wav_player_port_create(  pool,	/* memory pool	    */					      argv[1],	/* file to play	    */					      PTIME,	/* ptime.	    */					      0,	/* flags	    */					      0,	/* default buffer   */					      &play_port);    if (status != PJ_SUCCESS) {	app_perror(THIS_FILE, "Unable to open input WAV file", status);	return 1;    }    if (play_port->info.channel_count != 1) {	puts("Error: input WAV must have 1 channel audio");	return 1;    }    if (play_port->info.bits_per_sample != 16) {	puts("Error: input WAV must be encoded as 16bit PCM");	return 1;    }#ifdef PJ_DARWINOS    /* Need to force clock rate on MacOS */    if (play_port->info.clock_rate != 44100) {	pjmedia_port *resample_port;	status = pjmedia_resample_port_create(pool, play_port, 44100, 0,					      &resample_port);	if (status != PJ_SUCCESS) {	    app_perror(THIS_FILE, "Unable to create resampling port", status);	    return 1;	}	data.play_port = resample_port;    }#endif    /* Create WAV output file port */    status = pjmedia_wav_writer_port_create(pool, argv[2], 					    play_port->info.clock_rate,					    play_port->info.channel_count,					    play_port->info.samples_per_frame,					    play_port->info.bits_per_sample,					    0, 0, &rec_port);    if (status != PJ_SUCCESS) {	app_perror(THIS_FILE, "Unable to open output file", status);	return 1;    }    /* Create bidirectional port from the WAV ports */    pjmedia_bidirectional_port_create(pool, play_port, rec_port, &bidir_port);    /* Create sound device. */    status = pjmedia_snd_port_create(pool, -1, -1, 				     play_port->info.clock_rate,				     play_port->info.channel_count,				     play_port->info.samples_per_frame,				     play_port->info.bits_per_sample,				     0, &snd);    if (status != PJ_SUCCESS) {	app_perror(THIS_FILE, "Unable to open sound device", status);	return 1;    }    /* Customize AEC */    pjmedia_snd_port_set_ec(snd, pool, TAIL_LENGTH, 0);    /* Connect sound to the port */    pjmedia_snd_port_connect(snd, bidir_port);    puts("");    printf("Playing %s and recording to %s\n", argv[1], argv[2]);    puts("Press <ENTER> to quit");    fgets(tmp, sizeof(tmp), stdin);        /* Start deinitialization: */    /* Destroy sound device */    status = pjmedia_snd_port_destroy( snd );    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);    /* Destroy file port(s) */    status = pjmedia_port_destroy( play_port );    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);    status = pjmedia_port_destroy( rec_port );    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);    /* Release application pool */    pj_pool_release( pool );    /* Destroy media endpoint. */    pjmedia_endpt_destroy( med_endpt );    /* Destroy pool factory */    pj_caching_pool_destroy( &cp );    /* Shutdown PJLIB */    pj_shutdown();    /* Done. */    return 0;}