diff options
Diffstat (limited to 'pjsip-apps/src')
-rw-r--r-- | pjsip-apps/src/samples/confsample.c | 675 | ||||
-rw-r--r-- | pjsip-apps/src/samples/debug.c | 31 | ||||
-rw-r--r-- | pjsip-apps/src/samples/playfile.c | 182 | ||||
-rw-r--r-- | pjsip-apps/src/samples/playsine.c | 294 |
4 files changed, 1182 insertions, 0 deletions
diff --git a/pjsip-apps/src/samples/confsample.c b/pjsip-apps/src/samples/confsample.c new file mode 100644 index 00000000..98a3d9d4 --- /dev/null +++ b/pjsip-apps/src/samples/confsample.c @@ -0,0 +1,675 @@ +/* $Id$ */ +/* + * 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 + */ + +#include <pjmedia.h> + +/* + * FILE: + * + * confsample.c + * + * PURPOSE: + * + * Demonstrate how to use conference bridge. + * + * USAGE: + * + * confsample [file1.wav] [file2.wav] ... + * + * where: + * fileN.wav are optional WAV files to be connected to the conference + * bridge. The WAV files MUST have single channel (mono) and 16 bit PCM + * samples. It can have arbitrary sampling rate. + * + * DESCRIPTION: + * + * Here we create a conference bridge, with at least two ports: + * - port zero is for the sound device (capture and play), + * - port one is to play a generated sine wave. + * + * If WAV files are specified, the WAV file player ports will be connected + * to slot starting from number two in the bridge. The WAV files can have + * arbitrary sampling rate; the bridge will convert the samples to its clock + * rate. However, the files MUST have a single audio channel only (i.e. mono). + */ + +#include <pjmedia.h> +#include <pjlib.h> + +#include <stdlib.h> /* atoi() */ +#include <stdio.h> + + +/* For logging purpose. */ +#define THIS_FILE "confsample.c" + +/* + * Prototypes: + */ + +/* List the ports in the conference bridge */ +static void conf_list(pjmedia_conf *conf, pj_bool_t detail); + +/* Display VU meter */ +static void monitor_level(pjmedia_conf *conf, int slot, int dir, int dur); + + +/* Util to display the error message for the specified error code */ +static int app_perror( const char *sender, const char *title, + pj_status_t status) +{ + char errmsg[PJ_ERR_MSG_SIZE]; + + pj_strerror(status, errmsg, sizeof(errmsg)); + + printf("%s: %s [code=%d]\n", title, errmsg, status); + return 1; +} + + +/* Struct attached to sine generator */ +typedef struct +{ + pj_int16_t *samples; /* Sine samples. */ +} port_data; + + +/* This callback is called to feed sine wave samples from the sine + * generator. + */ +static pj_status_t sine_get_frame( pjmedia_port *port, + pjmedia_frame *frame) +{ + port_data *sine = port->user_data; + pj_int16_t *samples = frame->buf; + unsigned i, count, left, right; + + /* Get number of samples */ + count = frame->size / 2 / port->info.channel_count; + + left = 0; + right = 0; + + for (i=0; i<count; ++i) { + *samples++ = sine->samples[left]; + ++left; + + if (port->info.channel_count == 2) { + *samples++ = sine->samples[right]; + right += 2; /* higher pitch so we can distinguish left and right. */ + if (right >= count) + right = 0; + } + } + + /* Must set frame->type correctly, otherwise the sound device + * will refuse to play. + */ + frame->type = PJMEDIA_FRAME_TYPE_AUDIO; + + return PJ_SUCCESS; +} + +#ifndef M_PI +#define M_PI (3.14159265) +#endif + +/* + * Create a media port to generate sine wave samples. + */ +static pj_status_t create_sine_port(pj_pool_t *pool, + unsigned sampling_rate, + unsigned channel_count, + pjmedia_port **p_port) +{ + pjmedia_port *port; + unsigned i; + unsigned count; + port_data *sine; + + PJ_ASSERT_RETURN(pool && channel_count > 0 && channel_count <= 2, + PJ_EINVAL); + + port = pj_pool_zalloc(pool, sizeof(pjmedia_port)); + PJ_ASSERT_RETURN(port != NULL, PJ_ENOMEM); + + /* Fill in port info. */ + port->info.bits_per_sample = 16; + port->info.channel_count = channel_count; + port->info.encoding_name = pj_str("pcm"); + port->info.has_info = 1; + port->info.name = pj_str("sine generator"); + port->info.need_info = 0; + port->info.pt = 0xFF; + port->info.sample_rate = sampling_rate; + port->info.samples_per_frame = sampling_rate * 20 / 1000 * channel_count; + port->info.bytes_per_frame = port->info.samples_per_frame * 2; + port->info.type = PJMEDIA_TYPE_AUDIO; + + /* Set the function to feed frame */ + port->get_frame = &sine_get_frame; + + /* Create sine port data */ + port->user_data = sine = pj_pool_zalloc(pool, sizeof(port_data)); + + /* Create samples */ + count = port->info.samples_per_frame / channel_count; + sine->samples = pj_pool_alloc(pool, count * sizeof(pj_int16_t)); + PJ_ASSERT_RETURN(sine->samples != NULL, PJ_ENOMEM); + + /* initialise sinusoidal wavetable */ + for( i=0; i<count; i++ ) + { + sine->samples[i] = (pj_int16_t) (8000.0 * + sin(((double)i/(double)count) * M_PI * 8.) ); + } + + *p_port = port; + + return PJ_SUCCESS; +} + + +/* Show usage */ +static void usage(void) +{ + puts(""); + puts("Usage: confsample [file1.wav] [file2.wav] ..."); + puts(""); + puts("where:"); + puts(" fileN.WAV are optional WAV files to be connected to the conference"); + puts(" bridge. The WAV files MUST have single channel (mono) and 16 bit PCM"); + puts(" samples. They can have arbitrary/different sampling rate."); +} + + + +/* Input simple string */ +static pj_bool_t simple_input(const char *title, char *buf, pj_size_t len) +{ + char *p; + + printf("%s (empty to cancel): ", title); fflush(stdout); + fgets(buf, len, stdin); + + /* Remove trailing newlines. */ + for (p=buf; ; ++p) { + if (*p=='\r' || *p=='\n') *p='\0'; + else if (!*p) break; + } + + if (!*buf) + return PJ_FALSE; + + return PJ_TRUE; +} + + +/***************************************************************************** + * main() + */ +int main(int argc, char *argv[]) +{ + pj_caching_pool cp; + pjmedia_endpt *med_endpt; + pj_pool_t *pool; + pjmedia_conf *conf; + pjmedia_port *sine_port; + + int i, file_count; + pjmedia_port **file_port; /* Array of file ports */ + + char tmp[10]; + pj_status_t status; + + + /* Just in case user needs help */ + if (argc > 1 && (*argv[1]=='-' || *argv[1]=='/' || *argv[1]=='?')) { + usage(); + 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, &med_endpt); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + /* Create memory pool to allocate memory */ + pool = pj_pool_create( &cp.factory, /* pool factory */ + "wav", /* pool name. */ + 4000, /* init size */ + 4000, /* increment size */ + NULL /* callback on error */ + ); + + + /* Create the conference bridge. + * With default options (zero), the bridge will create an instance of + * sound capture and playback device and connect them to slot zero. + */ + status = pjmedia_conf_create( pool, /* pool to use */ + 2+argc-1, /* number of ports */ + 16000, /* sampling rate */ + 1, /* # of channels. */ + 320, /* samples per frame */ + 16, /* bits per sample */ + 0, /* options */ + &conf /* result */ + ); + if (status != PJ_SUCCESS) { + app_perror(THIS_FILE, "Unable to create conference bridge", status); + return 1; + } + + + /* Create a media port to generate sine wave samples. */ + status = create_sine_port( pool, /* memory pool */ + 11025, /* sampling rate */ + 1, /* # of channels */ + &sine_port /* returned port */ + ); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + + /* Add the sine generator port to the conference bridge. */ + status = pjmedia_conf_add_port(conf, /* the conference bridge */ + pool, /* pool */ + sine_port, /* the sine generator */ + NULL, /* use port's name */ + NULL /* ptr to receive slot # */ + ); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + + + /* Create file ports. */ + file_count = argc-1; + file_port = pj_pool_alloc(pool, file_count * sizeof(pjmedia_port*)); + + for (i=0; i<file_count; ++i) { + + /* Load the WAV file to file port. */ + status = pjmedia_file_player_port_create( pool, /* pool. */ + argv[i+1],/* filename */ + 0, /* flags */ + 0, /* buf size */ + NULL, /* user data */ + &file_port[i] /* result */ + ); + if (status != PJ_SUCCESS) { + char title[80]; + pj_ansi_sprintf(title, "Unable to use %s", argv[i+1]); + app_perror(THIS_FILE, title, status); + usage(); + return 1; + } + + /* Add the file port to conference bridge */ + status = pjmedia_conf_add_port( conf, /* The bridge */ + pool, /* pool */ + file_port[i], /* port to connect */ + NULL, /* Use port's name */ + NULL /* ptr to receive slot # */ + ); + if (status != PJ_SUCCESS) { + app_perror(THIS_FILE, "Unable to add conference port", status); + return 1; + } + } + + + /* + * All ports are set up in the conference bridge. + * But at this point, no media will be flowing since no ports are + * "connected". User must connect the port manually. + */ + + + /* Sleep to allow log messages to flush */ + pj_thread_sleep(100); + + + /* + * UI Menu: + */ + for (;;) { + char tmp1[10]; + char tmp2[10]; + char *err; + int src, dst, level; + + puts(""); + conf_list(conf, 0); + puts(""); + puts("Menu:"); + puts(" s Show ports details"); + puts(" c Connect one port to another"); + puts(" d Disconnect port connection"); + puts(" t Adjust signal level transmitted (tx) to a port"); + puts(" r Adjust signal level received (rx) from a port"); + puts(" v Display VU meter for a particular port"); + puts(" q Quit"); + puts(""); + + printf("Enter selection: "); fflush(stdout); + + fgets(tmp, sizeof(tmp), stdin); + + switch (tmp[0]) { + case 's': + puts(""); + conf_list(conf, 1); + break; + + case 'c': + puts(""); + puts("Connect source port to destination port"); + if (!simple_input("Enter source port number", tmp1, sizeof(tmp1)) ) + continue; + src = strtol(tmp1, &err, 10); + if (*err || src < 0 || src > file_count+2) { + puts("Invalid slot number"); + continue; + } + + if (!simple_input("Enter destination port number", tmp2, sizeof(tmp2)) ) + continue; + dst = strtol(tmp2, &err, 10); + if (*err || dst < 0 || dst >= file_count+2) { + puts("Invalid slot number"); + continue; + } + + status = pjmedia_conf_connect_port(conf, src, dst, 0); + if (status != PJ_SUCCESS) + app_perror(THIS_FILE, "Error connecting port", status); + + break; + + case 'd': + puts(""); + puts("Disconnect port connection"); + if (!simple_input("Enter source port number", tmp1, sizeof(tmp1)) ) + continue; + src = strtol(tmp1, &err, 10); + if (*err || src < 0 || src > file_count+2) { + puts("Invalid slot number"); + continue; + } + + if (!simple_input("Enter destination port number", tmp2, sizeof(tmp2)) ) + continue; + dst = strtol(tmp2, &err, 10); + if (*err || dst < 0 || dst >= file_count+2) { + puts("Invalid slot number"); + continue; + } + + status = pjmedia_conf_disconnect_port(conf, src, dst); + if (status != PJ_SUCCESS) + app_perror(THIS_FILE, "Error connecting port", status); + + + break; + + case 't': + puts(""); + puts("Adjust transmit level of a port"); + if (!simple_input("Enter port number", tmp1, sizeof(tmp1)) ) + continue; + src = strtol(tmp1, &err, 10); + if (*err || src < 0 || src > file_count+2) { + puts("Invalid slot number"); + continue; + } + + if (!simple_input("Enter level (-128 to +127, 0 for normal)", + tmp2, sizeof(tmp2)) ) + continue; + level = strtol(tmp2, &err, 10); + if (*err || level < -128 || level > 127) { + puts("Invalid level"); + continue; + } + + status = pjmedia_conf_adjust_tx_level( conf, src, level); + if (status != PJ_SUCCESS) + app_perror(THIS_FILE, "Error adjusting level", status); + break; + + + case 'r': + puts(""); + puts("Adjust receive level of a port"); + if (!simple_input("Enter port number", tmp1, sizeof(tmp1)) ) + continue; + src = strtol(tmp1, &err, 10); + if (*err || src < 0 || src > file_count+2) { + puts("Invalid slot number"); + continue; + } + + if (!simple_input("Enter level (-128 to +127, 0 for normal)", + tmp2, sizeof(tmp2)) ) + continue; + level = strtol(tmp2, &err, 10); + if (*err || level < -128 || level > 127) { + puts("Invalid level"); + continue; + } + + status = pjmedia_conf_adjust_rx_level( conf, src, level); + if (status != PJ_SUCCESS) + app_perror(THIS_FILE, "Error adjusting level", status); + break; + + case 'v': + puts(""); + puts("Display VU meter"); + if (!simple_input("Enter port number to monitor", tmp1, sizeof(tmp1)) ) + continue; + src = strtol(tmp1, &err, 10); + if (*err || src < 0 || src > file_count+2) { + puts("Invalid slot number"); + continue; + } + + if (!simple_input("Enter r for rx level or t for tx level", tmp2, sizeof(tmp2))) + continue; + if (tmp2[0] != 'r' && tmp2[0] != 't') { + puts("Invalid option"); + continue; + } + + if (!simple_input("Duration to monitor (in seconds)", tmp1, sizeof(tmp1)) ) + continue; + strtol(tmp1, &err, 10); + if (*err) { + puts("Invalid duration number"); + continue; + } + + monitor_level(conf, src, tmp2[0], strtol(tmp1, &err, 10)); + break; + + case 'q': + goto on_quit; + + default: + printf("Invalid input character '%c'\n", tmp[0]); + break; + } + } + +on_quit: + + /* Start deinitialization: */ + + /* Destroy conference bridge */ + status = pjmedia_conf_destroy( conf ); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + + /* Destroy file ports */ + for (i=0; i<file_count; ++i) { + status = pjmedia_port_destroy( file_port[i]); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + } + + /* Destroy sine generator port */ + status = pjmedia_port_destroy( sine_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 ); + + + /* Done. */ + return 0; +} + + +/* + * List the ports in conference bridge + */ +static void conf_list(pjmedia_conf *conf, int detail) +{ + enum { MAX_PORTS = 32 }; + unsigned i, count; + pjmedia_conf_port_info info[MAX_PORTS]; + + printf("Conference ports:\n"); + + count = PJ_ARRAY_SIZE(info); + pjmedia_conf_get_ports_info(conf, &count, info); + + for (i=0; i<count; ++i) { + char txlist[4*MAX_PORTS]; + unsigned j; + pjmedia_conf_port_info *port_info = &info[i]; + + txlist[0] = '\0'; + for (j=0; j<count; ++j) { + char s[10]; + if (port_info->listener[j]) { + pj_ansi_sprintf(s, "#%d ", j); + pj_ansi_strcat(txlist, s); + } + } + + if (txlist[0] == '\0') { + txlist[0] = '-'; + txlist[1] = '\0'; + } + + if (!detail) { + printf("Port #%02d %-25.*s transmitting to: %s\n", + port_info->slot, + (int)port_info->name.slen, + port_info->name.ptr, + txlist); + } else { + unsigned tx_level, rx_level; + + pjmedia_conf_get_signal_level(conf, port_info->slot, + &tx_level, &rx_level); + + printf("Port #%02d:\n" + " Name : %.*s\n" + " Sampling rate : %d Hz\n" + " Frame time : %d ms\n" + " Signal level adjustment : tx=%d, rx=%d\n" + " Current signal level : tx=%u, rx=%u\n" + " Transmitting to ports : %s\n\n", + port_info->slot, + (int)port_info->name.slen, + port_info->name.ptr, + port_info->clock_rate, + port_info->samples_per_frame*1000/port_info->clock_rate, + port_info->tx_adj_level, + port_info->rx_adj_level, + tx_level, + rx_level, + txlist); + } + + } + puts(""); +} + + +/* + * Display VU meter + */ +static void monitor_level(pjmedia_conf *conf, int slot, int dir, int dur) +{ + enum { SLEEP = 100}; + pj_status_t status; + int i, count; + + puts(""); + printf("Displaying VU meter for port %d for about %d seconds\n", + slot, dur); + + count = dur * 1000 / SLEEP; + + for (i=0; i<count; ++i) { + unsigned tx_level, rx_level; + int j, level; + char meter[21]; + + status = pjmedia_conf_get_signal_level(conf, slot, + &tx_level, &rx_level); + if (status != PJ_SUCCESS) { + app_perror(THIS_FILE, "Unable to read level", status); + return; + } + + level = 20 * (dir=='r'?rx_level:tx_level) / 255; + for (j=0; j<level; ++j) + meter[j] = '#'; + for (; j<20; ++j) + meter[j] = ' '; + meter[20] = '\0'; + + printf("Port #%02d %cx level: [%s]\r", + slot, dir, meter); + + pj_thread_sleep(SLEEP); + } + + puts(""); +} + diff --git a/pjsip-apps/src/samples/debug.c b/pjsip-apps/src/samples/debug.c new file mode 100644 index 00000000..a37114c0 --- /dev/null +++ b/pjsip-apps/src/samples/debug.c @@ -0,0 +1,31 @@ +/* $Id$ */ +/* + * 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 + */ + +/* + * PURPOSE: + * The purpose of this file is to allow debugging of a sample application + * using MSVC IDE. + */ + +/* To debug a sample application, include the source file here. + * E.g.: + * #include "playfile.c" + */ +#include "confsample.c" + diff --git a/pjsip-apps/src/samples/playfile.c b/pjsip-apps/src/samples/playfile.c new file mode 100644 index 00000000..912feea5 --- /dev/null +++ b/pjsip-apps/src/samples/playfile.c @@ -0,0 +1,182 @@ +/* $Id$ */ +/* + * 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 + */ + +#include <pjmedia.h> + +/* + * playfile.c + * + * PURPOSE: + * Play a WAV file to sound player device. + * + * USAGE: + * playfile FILE.WAV + * + * The WAV file could have mono or stereo channels with arbitrary + * sampling rate, but MUST contain uncompressed (i.e. 16bit) PCM. + * + */ + +#include <pjmedia.h> +#include <pjlib.h> + +#include <stdio.h> + +/* For logging purpose. */ +#define THIS_FILE "playfile.c" + + +/* Util to display the error message for the specified error code */ +static int app_perror( const char *sender, const char *title, + pj_status_t status) +{ + char errmsg[PJ_ERR_MSG_SIZE]; + + pj_strerror(status, errmsg, sizeof(errmsg)); + + printf("%s: %s [code=%d]\n", title, errmsg, status); + return 1; +} + + +/* + * main() + */ +int main(int argc, char *argv[]) +{ + pj_caching_pool cp; + pjmedia_endpt *med_endpt; + pj_pool_t *pool; + pjmedia_port *file_port; + pjmedia_snd_port *snd_port; + char tmp[10]; + pj_status_t status; + + + /* Verify cmd line arguments. */ + if (argc != 2) { + puts(""); + puts("Usage: "); + puts(" playfile <wav-file>"); + puts(""); + puts("The WAV file could have mono or stereo channels with arbitrary"); + puts("sampling rate, but MUST contain uncompressed (i.e. 16bit) PCM."); + return 0; + } + + /* 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, &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_file_player_port_create( pool, /* memory pool */ + argv[1], /* file to play */ + 0, /* flags */ + 0, /* default buffer */ + NULL, /* user data */ + &file_port/* returned port */ + ); + if (status != PJ_SUCCESS) { + app_perror(THIS_FILE, "Unable to use WAV file", status); + return 1; + } + + /* Create sound player port. */ + status = pjmedia_snd_port_create_player( + pool, /* pool */ + -1, /* use default dev. */ + file_port->info.sample_rate, /* clock rate. */ + file_port->info.channel_count, /* # of channels. */ + file_port->info.samples_per_frame, /* samples per frame. */ + file_port->info.bits_per_sample, /* 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; + } + + /* Connect file port to the sound player. + * Stream playing will commence immediately. + */ + status = pjmedia_snd_port_connect( snd_port, file_port); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + + + /* + * File should be playing and looping now, using sound device's thread. + */ + + + /* Sleep to allow log messages to flush */ + pj_thread_sleep(100); + + + printf("Playing %s..\n", argv[1]); + puts(""); + puts("Press <ENTER> to stop playing and quit"); + + fgets(tmp, sizeof(tmp), stdin); + + + /* Start deinitialization: */ + + /* Destroy sound device */ + status = pjmedia_snd_port_destroy( snd_port ); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + + /* Destroy file port */ + status = pjmedia_port_destroy( 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 ); + + + /* Done. */ + return 0; +} diff --git a/pjsip-apps/src/samples/playsine.c b/pjsip-apps/src/samples/playsine.c new file mode 100644 index 00000000..f7a555d4 --- /dev/null +++ b/pjsip-apps/src/samples/playsine.c @@ -0,0 +1,294 @@ +/* $Id$ */ +/* + * 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 + */ + +#include <pjmedia.h> + +/* + * playsine.c + * + * PURPOSE: + * Demonstrate how to create and use custom media port which + * simply feed a sine wav to the sound player. + * + * USAGE: + * playsine [nchannel] + * + * where: + * nchannel is 1 for mono (this is the default) or 2 for stereo. + */ + +#include <pjmedia.h> +#include <pjlib.h> + +#include <stdlib.h> /* atoi() */ +#include <stdio.h> + + +/* For logging purpose. */ +#define THIS_FILE "playsine.c" + + +/* Util to display the error message for the specified error code */ +static int app_perror( const char *sender, const char *title, + pj_status_t status) +{ + char errmsg[PJ_ERR_MSG_SIZE]; + + pj_strerror(status, errmsg, sizeof(errmsg)); + + printf("%s: %s [code=%d]\n", title, errmsg, status); + return 1; +} + + +/* Struct attached to sine generator */ +typedef struct +{ + pj_int16_t *samples; /* Sine samples. */ +} port_data; + + +/* This callback is called to feed more samples */ +static pj_status_t sine_get_frame( pjmedia_port *port, + pjmedia_frame *frame) +{ + port_data *sine = port->user_data; + pj_int16_t *samples = frame->buf; + unsigned i, count, left, right; + + /* Get number of samples */ + count = frame->size / 2 / port->info.channel_count; + + left = 0; + right = 0; + + for (i=0; i<count; ++i) { + *samples++ = sine->samples[left]; + ++left; + + if (port->info.channel_count == 2) { + *samples++ = sine->samples[right]; + right += 2; /* higher pitch so we can distinguish left and right. */ + if (right >= count) + right = 0; + } + } + + /* Must set frame->type correctly, otherwise the sound device + * will refuse to play. + */ + frame->type = PJMEDIA_FRAME_TYPE_AUDIO; + + return PJ_SUCCESS; +} + +#ifndef M_PI +#define M_PI (3.14159265) +#endif + +/* + * Create a media port to generate sine wave samples. + */ +static pj_status_t create_sine_port(pj_pool_t *pool, + unsigned sampling_rate, + unsigned channel_count, + pjmedia_port **p_port) +{ + pjmedia_port *port; + unsigned i; + unsigned count; + port_data *sine; + + PJ_ASSERT_RETURN(pool && channel_count > 0 && channel_count <= 2, + PJ_EINVAL); + + port = pj_pool_zalloc(pool, sizeof(pjmedia_port)); + PJ_ASSERT_RETURN(port != NULL, PJ_ENOMEM); + + /* Fill in port info. */ + port->info.bits_per_sample = 16; + port->info.channel_count = channel_count; + port->info.encoding_name = pj_str("pcm"); + port->info.has_info = 1; + port->info.name = pj_str("sine generator"); + port->info.need_info = 0; + port->info.pt = 0xFF; + port->info.sample_rate = sampling_rate; + port->info.samples_per_frame = sampling_rate * 20 / 1000 * channel_count; + port->info.bytes_per_frame = port->info.samples_per_frame * 2; + port->info.type = PJMEDIA_TYPE_AUDIO; + + /* Set the function to feed frame */ + port->get_frame = &sine_get_frame; + + /* Create sine port data */ + port->user_data = sine = pj_pool_zalloc(pool, sizeof(port_data)); + + /* Create samples */ + count = port->info.samples_per_frame / channel_count; + sine->samples = pj_pool_alloc(pool, count * sizeof(pj_int16_t)); + PJ_ASSERT_RETURN(sine->samples != NULL, PJ_ENOMEM); + + /* initialise sinusoidal wavetable */ + for( i=0; i<count; i++ ) + { + sine->samples[i] = (pj_int16_t) (10000.0 * + sin(((double)i/(double)count) * M_PI * 8.) ); + } + + *p_port = port; + + return PJ_SUCCESS; +} + + +/* Show usage */ +static void usage(void) +{ + puts(""); + puts("Usage: playsine [nchannel]"); + puts(""); + puts("where"); + puts(" nchannel is number of audio channels (1 for mono, or 2 for stereo)."); + puts(" Default is 1 (mono)."); + puts(""); +} + + +/* + * main() + */ +int main(int argc, char *argv[]) +{ + pj_caching_pool cp; + pjmedia_endpt *med_endpt; + pj_pool_t *pool; + pjmedia_port *sine_port; + pjmedia_snd_port *snd_port; + char tmp[10]; + int channel_count = 1; + pj_status_t status; + + if (argc == 2) { + channel_count = atoi(argv[1]); + if (channel_count < 1 || channel_count > 2) { + puts("Error: invalid arguments"); + usage(); + 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, &med_endpt); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + /* Create memory pool for our sine generator */ + pool = pj_pool_create( &cp.factory, /* pool factory */ + "wav", /* pool name. */ + 4000, /* init size */ + 4000, /* increment size */ + NULL /* callback on error */ + ); + + /* Create a media port to generate sine wave samples. */ + status = create_sine_port( pool, /* memory pool */ + 11025, /* sampling rate */ + channel_count,/* # of channels */ + &sine_port /* returned port */ + ); + if (status != PJ_SUCCESS) { + app_perror(THIS_FILE, "Unable to create sine port", status); + return 1; + } + + /* Create sound player port. */ + status = pjmedia_snd_port_create_player( + pool, /* pool */ + -1, /* use default dev. */ + sine_port->info.sample_rate, /* clock rate. */ + sine_port->info.channel_count, /* # of channels. */ + sine_port->info.samples_per_frame, /* samples per frame. */ + sine_port->info.bits_per_sample, /* 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; + } + + /* Connect sine generator port to the sound player + * Stream playing will commence immediately. + */ + status = pjmedia_snd_port_connect( snd_port, sine_port); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + + + /* + * Audio should be playing in a loop now, using sound device's thread. + */ + + + /* Sleep to allow log messages to flush */ + pj_thread_sleep(100); + + + puts("Playing sine wave.."); + puts(""); + puts("Press <ENTER> to stop playing and quit"); + + fgets(tmp, sizeof(tmp), stdin); + + + /* Start deinitialization: */ + + /* Destroy sound device */ + status = pjmedia_snd_port_destroy( snd_port ); + PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); + + + /* Destroy sine generator */ + status = pjmedia_port_destroy( sine_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 ); + + + /* Done. */ + return 0; +} |