| /* $Id$ */ |
| /* |
| * 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 |
| */ |
| |
| |
| /** |
| * \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; |
| } |
| |