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/* $Id$ */
/*
* Copyright (C) 2003-2006 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 800
static 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;
}
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