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1.1.11
by Mark Purcell
Import upstream version 1.3.0 |
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/* $Id: aectest.c 3664 2011-07-19 03:42:28Z nanang $ */
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/*
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* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
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* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* \page page_pjmedia_samples_aectest_c Samples: AEC Test (aectest.c)
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*
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* Play a file to speaker, run AEC, and record the microphone input
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* to see if echo is coming.
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*
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* This file is pjsip-apps/src/samples/aectest.c
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*
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* \includelineno aectest.c
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*/
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#include <pjmedia.h> |
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#include <pjlib-util.h> /* pj_getopt */ |
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#include <pjlib.h> |
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#define THIS_FILE "aectest.c"
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#define PTIME 20
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#define TAIL_LENGTH 200
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static const char *desc = |
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" FILE \n" |
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" \n" |
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" aectest.c \n" |
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" \n" |
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" PURPOSE \n" |
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" \n" |
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" Test the AEC effectiveness. \n" |
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" \n" |
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" USAGE \n" |
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" \n" |
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" aectest [options] <PLAY.WAV> <REC.WAV> <OUTPUT.WAV> \n" |
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" \n" |
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" <PLAY.WAV> is the signal played to the speaker. \n" |
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" <REC.WAV> is the signal captured from the microphone. \n" |
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" <OUTPUT.WAV> is the output file to store the test result \n" |
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"\n" |
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" options:\n" |
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" -d The delay between playback and capture in ms, at least 25 ms.\n" |
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" Default is 25 ms. See note below. \n" |
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" -l Set the echo tail length in ms. Default is 200 ms \n" |
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" -r Set repeat count (default=1) \n" |
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" -a Algorithm: 0=default, 1=speex, 3=echo suppress \n" |
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" -i Interactive \n" |
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"\n" |
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" Note that for the AEC internal buffering mechanism, it is required\n" |
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" that the echoed signal (in REC.WAV) is delayed from the \n" |
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" corresponding reference signal (in PLAY.WAV) at least as much as \n" |
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" frame time + PJMEDIA_WSOLA_DELAY_MSEC. In this application, frame \n" |
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" time is 20 ms and default PJMEDIA_WSOLA_DELAY_MSEC is 5 ms, hence \n" |
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" 25 ms delay is the minimum value. \n"; |
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/*
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* Sample session:
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*
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* -d 100 -a 1 ../bin/orig8.wav ../bin/echo8.wav ../bin/result8.wav
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*/
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static void app_perror(const char *sender, const char *title, pj_status_t st) |
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{
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char errmsg[PJ_ERR_MSG_SIZE]; |
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pj_strerror(st, errmsg, sizeof(errmsg)); |
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PJ_LOG(3,(sender, "%s: %s", title, errmsg)); |
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}
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/*
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* main()
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*/
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int main(int argc, char *argv[]) |
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{
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pj_caching_pool cp; |
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pjmedia_endpt *med_endpt; |
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pj_pool_t *pool; |
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pjmedia_port *wav_play; |
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pjmedia_port *wav_rec; |
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pjmedia_port *wav_out; |
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pj_status_t status; |
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pjmedia_echo_state *ec; |
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pjmedia_frame play_frame, rec_frame; |
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unsigned opt = 0; |
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unsigned latency_ms = 25; |
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unsigned tail_ms = TAIL_LENGTH; |
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pj_timestamp t0, t1; |
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int i, repeat=1, interactive=0, c; |
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pj_optind = 0; |
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while ((c=pj_getopt(argc, argv, "d:l:a:r:i")) !=-1) { |
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switch (c) { |
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case 'd': |
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latency_ms = atoi(pj_optarg); |
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if (latency_ms < 25) { |
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puts("Invalid delay"); |
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puts(desc); |
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}
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break; |
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case 'l': |
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tail_ms = atoi(pj_optarg); |
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break; |
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case 'a': |
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{
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int alg = atoi(pj_optarg); |
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switch (alg) { |
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case 0: |
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opt = 0; |
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case 1: |
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opt = PJMEDIA_ECHO_SPEEX; |
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break; |
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case 3: |
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opt = PJMEDIA_ECHO_SIMPLE; |
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break; |
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default: |
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puts("Invalid algorithm"); |
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puts(desc); |
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return 1; |
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}
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}
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break; |
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case 'r': |
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repeat = atoi(pj_optarg); |
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if (repeat < 1) { |
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puts("Invalid repeat count"); |
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puts(desc); |
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return 1; |
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}
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break; |
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case 'i': |
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interactive = 1; |
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break; |
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}
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}
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if (argc - pj_optind != 3) { |
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puts("Error: missing argument(s)"); |
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puts(desc); |
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return 1; |
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}
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/* Must init PJLIB first: */
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status = pj_init(); |
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PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
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/* Must create a pool factory before we can allocate any memory. */
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pj_caching_pool_init(&cp, &pj_pool_factory_default_policy, 0); |
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/*
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* Initialize media endpoint.
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* This will implicitly initialize PJMEDIA too.
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*/
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status = pjmedia_endpt_create(&cp.factory, NULL, 1, &med_endpt); |
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PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
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/* Create memory pool for our file player */
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pool = pj_pool_create( &cp.factory, /* pool factory */ |
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"wav", /* pool name. */ |
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4000, /* init size */ |
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4000, /* increment size */ |
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NULL /* callback on error */ |
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);
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/* Open wav_play */
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status = pjmedia_wav_player_port_create(pool, argv[pj_optind], PTIME, |
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PJMEDIA_FILE_NO_LOOP, 0, |
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&wav_play); |
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if (status != PJ_SUCCESS) { |
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app_perror(THIS_FILE, "Error opening playback WAV file", status); |
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return 1; |
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}
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/* Open recorded wav */
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status = pjmedia_wav_player_port_create(pool, argv[pj_optind+1], PTIME, |
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PJMEDIA_FILE_NO_LOOP, 0, |
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&wav_rec); |
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if (status != PJ_SUCCESS) { |
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app_perror(THIS_FILE, "Error opening recorded WAV file", status); |
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return 1; |
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}
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/* play and rec WAVs must have the same clock rate */
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if (PJMEDIA_PIA_SRATE(&wav_play->info) != PJMEDIA_PIA_SRATE(&wav_rec->info)) { |
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puts("Error: clock rate mismatch in the WAV files"); |
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return 1; |
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}
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/* .. and channel count */
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if (PJMEDIA_PIA_CCNT(&wav_play->info) != PJMEDIA_PIA_CCNT(&wav_rec->info)) { |
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puts("Error: clock rate mismatch in the WAV files"); |
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return 1; |
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}
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/* Create output wav */
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status = pjmedia_wav_writer_port_create(pool, argv[pj_optind+2], |
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PJMEDIA_PIA_SRATE(&wav_play->info), |
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PJMEDIA_PIA_CCNT(&wav_play->info), |
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PJMEDIA_PIA_SPF(&wav_play->info), |
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PJMEDIA_PIA_BITS(&wav_play->info), |
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0, 0, &wav_out); |
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if (status != PJ_SUCCESS) { |
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app_perror(THIS_FILE, "Error opening output WAV file", status); |
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return 1; |
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}
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/* Create echo canceller */
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status = pjmedia_echo_create2(pool, PJMEDIA_PIA_SRATE(&wav_play->info), |
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PJMEDIA_PIA_CCNT(&wav_play->info), |
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PJMEDIA_PIA_SPF(&wav_play->info), |
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tail_ms, latency_ms, |
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opt, &ec); |
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if (status != PJ_SUCCESS) { |
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app_perror(THIS_FILE, "Error creating EC", status); |
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return 1; |
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}
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/* Processing loop */
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play_frame.buf = pj_pool_alloc(pool, PJMEDIA_PIA_SPF(&wav_play->info)<<1); |
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rec_frame.buf = pj_pool_alloc(pool, PJMEDIA_PIA_SPF(&wav_play->info)<<1); |
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pj_get_timestamp(&t0); |
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for (i=0; i < repeat; ++i) { |
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for (;;) { |
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play_frame.size = PJMEDIA_PIA_SPF(&wav_play->info) << 1; |
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status = pjmedia_port_get_frame(wav_play, &play_frame); |
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if (status != PJ_SUCCESS) |
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break; |
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status = pjmedia_echo_playback(ec, (short*)play_frame.buf); |
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rec_frame.size = PJMEDIA_PIA_SPF(&wav_play->info) << 1; |
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status = pjmedia_port_get_frame(wav_rec, &rec_frame); |
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if (status != PJ_SUCCESS) |
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break; |
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status = pjmedia_echo_capture(ec, (short*)rec_frame.buf, 0); |
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//status = pjmedia_echo_cancel(ec, (short*)rec_frame.buf,
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// (short*)play_frame.buf, 0, NULL);
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pjmedia_port_put_frame(wav_out, &rec_frame); |
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}
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pjmedia_wav_player_port_set_pos(wav_play, 0); |
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pjmedia_wav_player_port_set_pos(wav_rec, 0); |
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}
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pj_get_timestamp(&t1); |
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i = pjmedia_wav_writer_port_get_pos(wav_out) / sizeof(pj_int16_t) * 1000 / |
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(PJMEDIA_PIA_SRATE(&wav_out->info) * PJMEDIA_PIA_CCNT(&wav_out->info)); |
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PJ_LOG(3,(THIS_FILE, "Processed %3d.%03ds audio", |
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i / 1000, i % 1000)); |
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PJ_LOG(3,(THIS_FILE, "Completed in %u msec\n", pj_elapsed_msec(&t0, &t1))); |
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/* Destroy file port(s) */
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status = pjmedia_port_destroy( wav_play ); |
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PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
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status = pjmedia_port_destroy( wav_rec ); |
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PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
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status = pjmedia_port_destroy( wav_out ); |
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PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
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/* Destroy ec */
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pjmedia_echo_destroy(ec); |
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/* Release application pool */
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pj_pool_release( pool ); |
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/* Destroy media endpoint. */
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pjmedia_endpt_destroy( med_endpt ); |
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/* Destroy pool factory */
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pj_caching_pool_destroy( &cp ); |
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/* Shutdown PJLIB */
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pj_shutdown(); |
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if (interactive) { |
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char s[10], *dummy; |
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puts("ENTER to quit"); |
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dummy = fgets(s, sizeof(s), stdin); |
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}
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/* Done. */
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return 0; |
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}
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