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+/* $Id: stereotest.c 3664 2011-07-19 03:42:28Z nanang $ */
+/*
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * 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_stereo_c Samples: Using Stereo Port
+ *
+ * This example demonstrates how to use @ref PJMEDIA_STEREO_PORT to
+ * change the channel count of the media streams.
+ *
+ * This file is pjsip-apps/src/samples/stereotest.c
+ *
+ * \includelineno stereotest.c
+ */
+
+#include <pjmedia.h>
+#include <pjlib-util.h>
+#include <pjlib.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "util.h"
+
+#define REC_CLOCK_RATE 16000
+#define PTIME 20
+
+#define MODE_PLAY 1
+#define MODE_RECORD 2
+
+
+/* For logging purpose. */
+#define THIS_FILE "stereotest.c"
+
+
+static const char *desc =
+" FILE \n"
+" \n"
+" stereotest.c \n"
+" \n"
+" PURPOSE \n"
+" \n"
+" Demonstrate how use stereo port to play a WAV file to sound \n"
+" device or record to a WAV file from sound device with different \n"
+" channel count. \n"
+" \n"
+" USAGE \n"
+" \n"
+" stereotest [options] WAV \n"
+" \n"
+" Options: \n"
+" -m, --mode=N Operation mode: 1 = playing, 2 = recording.\n"
+" -C, --rec-ch-cnt=N Number of channel for recording file. \n"
+" -c, --snd-ch-cnt=N Number of channel for opening sound device.\n"
+" \n";
+
+int main(int argc, char *argv[])
+{
+ pj_caching_pool cp;
+ pjmedia_endpt *med_endpt;
+ pj_pool_t *pool;
+
+ pjmedia_port *file_port = NULL;
+ pjmedia_port *stereo_port = NULL;
+ pjmedia_snd_port *snd_port = NULL;
+
+ int dev_id = -1;
+ char tmp[10];
+ pj_status_t status;
+
+ char *wav_file = NULL;
+ unsigned mode = 0;
+ unsigned rec_ch_cnt = 1;
+ unsigned snd_ch_cnt = 2;
+
+ enum {
+ OPT_MODE = 'm',
+ OPT_REC_CHANNEL = 'C',
+ OPT_SND_CHANNEL = 'c',
+ };
+
+ struct pj_getopt_option long_options[] = {
+ { "mode", 1, 0, OPT_MODE },
+ { "rec-ch-cnt", 1, 0, OPT_REC_CHANNEL },
+ { "snd-ch-cnt", 1, 0, OPT_SND_CHANNEL },
+ { NULL, 0, 0, 0 },
+ };
+
+ int c;
+ int option_index;
+
+ /* Must init PJLIB first: */
+ status = pj_init();
+ PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
+
+ /* Parse arguments */
+ pj_optind = 0;
+ while((c=pj_getopt_long(argc,argv, "m:C:c:", long_options, &option_index))!=-1) {
+
+ switch (c) {
+ case OPT_MODE:
+ if (mode) {
+ app_perror(THIS_FILE, "Cannot record and play at once!",
+ PJ_EINVAL);
+ return 1;
+ }
+ mode = atoi(pj_optarg);
+ break;
+
+ case OPT_REC_CHANNEL:
+ rec_ch_cnt = atoi(pj_optarg);
+ break;
+
+ case OPT_SND_CHANNEL:
+ snd_ch_cnt = atoi(pj_optarg);
+ break;
+
+ default:
+ printf("Invalid options %s\n", argv[pj_optind]);
+ puts(desc);
+ return 1;
+ }
+
+ }
+
+ wav_file = argv[pj_optind];
+
+ /* Verify arguments. */
+ if (!wav_file) {
+ app_perror(THIS_FILE, "WAV file not specified!", PJ_EINVAL);
+ puts(desc);
+ return 1;
+ }
+ if (!snd_ch_cnt || !rec_ch_cnt || rec_ch_cnt > 6) {
+ app_perror(THIS_FILE, "Invalid or too many channel count!", PJ_EINVAL);
+ puts(desc);
+ return 1;
+ }
+ if (mode != MODE_RECORD && mode != MODE_PLAY) {
+ app_perror(THIS_FILE, "Invalid operation mode!", PJ_EINVAL);
+ puts(desc);
+ return 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 */
+ "app", /* pool name. */
+ 4000, /* init size */
+ 4000, /* increment size */
+ NULL /* callback on error */
+ );
+
+ if (mode == MODE_PLAY) {
+ /* Create WAVE file player port. */
+ status = pjmedia_wav_player_port_create( pool, wav_file, PTIME, 0,
+ 0, &file_port);
+ if (status != PJ_SUCCESS) {
+ app_perror(THIS_FILE, "Unable to open file", status);
+ return 1;
+ }
+
+ /* Create sound player port. */
+ status = pjmedia_snd_port_create_player(
+ pool, /* pool */
+ dev_id, /* device id. */
+ PJMEDIA_PIA_SRATE(&file_port->info),/* clock rate. */
+ snd_ch_cnt, /* # of channels. */
+ snd_ch_cnt * PTIME * /* samples per frame. */
+ PJMEDIA_PIA_SRATE(&file_port->info) / 1000,
+ PJMEDIA_PIA_BITS(&file_port->info),/* bits per sample. */
+ 0, /* options */
+ &snd_port /* returned port */
+ );
+ if (status != PJ_SUCCESS) {
+ app_perror(THIS_FILE, "Unable to open sound device", status);
+ return 1;
+ }
+
+ if (snd_ch_cnt != PJMEDIA_PIA_CCNT(&file_port->info)) {
+ status = pjmedia_stereo_port_create( pool,
+ file_port,
+ snd_ch_cnt,
+ 0,
+ &stereo_port);
+ if (status != PJ_SUCCESS) {
+ app_perror(THIS_FILE, "Unable to create stereo port", status);
+ return 1;
+ }
+
+ status = pjmedia_snd_port_connect(snd_port, stereo_port);
+ } else {
+ status = pjmedia_snd_port_connect(snd_port, file_port);
+ }
+
+ if (status != PJ_SUCCESS) {
+ app_perror(THIS_FILE, "Unable to connect sound port", status);
+ return 1;
+ }
+
+ } else {
+ /* Create WAVE file writer port. */
+ status = pjmedia_wav_writer_port_create(pool, wav_file,
+ REC_CLOCK_RATE,
+ rec_ch_cnt,
+ rec_ch_cnt * PTIME *
+ REC_CLOCK_RATE / 1000,
+ NBITS,
+ 0, 0,
+ &file_port);
+ if (status != PJ_SUCCESS) {
+ app_perror(THIS_FILE, "Unable to open file", status);
+ return 1;
+ }
+
+ /* Create sound player port. */
+ status = pjmedia_snd_port_create_rec(
+ pool, /* pool */
+ dev_id, /* device id. */
+ REC_CLOCK_RATE, /* clock rate. */
+ snd_ch_cnt, /* # of channels. */
+ snd_ch_cnt * PTIME *
+ REC_CLOCK_RATE / 1000, /* samples per frame. */
+ NBITS, /* bits per sample. */
+ 0, /* options */
+ &snd_port /* returned port */
+ );
+ if (status != PJ_SUCCESS) {
+ app_perror(THIS_FILE, "Unable to open sound device", status);
+ return 1;
+ }
+
+ if (rec_ch_cnt != snd_ch_cnt) {
+ status = pjmedia_stereo_port_create( pool,
+ file_port,
+ snd_ch_cnt,
+ 0,
+ &stereo_port);
+ if (status != PJ_SUCCESS) {
+ app_perror(THIS_FILE, "Unable to create stereo port", status);
+ return 1;
+ }
+
+ status = pjmedia_snd_port_connect(snd_port, stereo_port);
+ } else {
+ status = pjmedia_snd_port_connect(snd_port, file_port);
+ }
+
+ if (status != PJ_SUCCESS) {
+ app_perror(THIS_FILE, "Unable to connect sound port", status);
+ return 1;
+ }
+ }
+
+ /* Dump memory usage */
+ dump_pool_usage(THIS_FILE, &cp);
+
+ /*
+ * File should be playing and looping now, using sound device's thread.
+ */
+
+
+ /* Sleep to allow log messages to flush */
+ pj_thread_sleep(100);
+
+ printf("Mode = %s\n", (mode == MODE_PLAY? "playing" : "recording") );
+ printf("File port channel count = %d\n", PJMEDIA_PIA_CCNT(&file_port->info));
+ printf("Sound port channel count = %d\n",
+ PJMEDIA_PIA_CCNT(&pjmedia_snd_port_get_port(snd_port)->info));
+ puts("");
+ puts("Press <ENTER> to stop and quit");
+
+ if (fgets(tmp, sizeof(tmp), stdin) == NULL) {
+ puts("EOF while reading stdin, will quit now..");
+ }
+
+ /* Start deinitialization: */
+
+
+ /* Destroy sound device */
+ status = pjmedia_snd_port_destroy( snd_port );
+ PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
+
+
+ /* Destroy stereo port and file_port.
+ * Stereo port will destroy all downstream ports (e.g. the file port)
+ */
+ status = pjmedia_port_destroy( stereo_port? stereo_port : file_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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