/* $Id$ */ /* * Copyright (C) 2003-2008 Benny Prijono * * 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 #include #include #include #include #include "util.h" #define REC_CLOCK_RATE 16000 #define PTIME 10 #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. */ file_port->info.clock_rate, /* clock rate. */ snd_ch_cnt, /* # of channels. */ snd_ch_cnt * PTIME * /* samples per frame. */ file_port->info.clock_rate / 1000, 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; } if (snd_ch_cnt != file_port->info.channel_count) { 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", file_port->info.channel_count); printf("Sound port channel count = %d\n", pjmedia_snd_port_get_port(snd_port)->info.channel_count); puts(""); puts("Press to stop 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 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; }