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/* $Id$ */
/*
* 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
*/
static const char *desc =
" sndinfo.c \n"
" \n"
" PURPOSE: \n"
" Print sound device info and test open device. \n"
" \n"
" USAGE: \n"
" sndinfo [id r/p clockrate nchan bits] \n"
" \n"
" DESCRIPTION: \n"
" When invoked without any arguments, it displays information about all \n"
" sound devices in the system. \n"
" \n"
" When invoked with arguments, the program tests if device can be opened \n"
" with the specified arguments. All these arguments must be specified: \n"
" - id The device ID (-1 for the first capable device) \n"
" - r/p Specify r for recording/capture, p for playing. \n"
" - clockrate Specify clock rate (e.g. 8000, 11025, etc.) \n"
" - nchan Number of channels (1=mono, 2=stereo). \n"
" - bits Number of bits per sample (normally 16). \n";
#include <pjmedia.h>
#include <pjlib.h>
#include <stdlib.h> /* atoi() */
#include <stdio.h>
static void enum_devices(void)
{
int i, count;
count = pjmedia_snd_get_dev_count();
if (count == 0) {
puts("No devices found");
return;
}
for (i=0; i<count; ++i) {
const pjmedia_snd_dev_info *info;
info = pjmedia_snd_get_dev_info(i);
pj_assert(info != NULL);
printf( "Device #%02d: \n"
" Name : %s\n"
" # of input channels : %d\n"
" # of output channels: %d\n"
" Default clock rate : %d Hz\n\n",
i, info->name, info->input_count, info->output_count,
info->default_samples_per_sec);
}
}
static pj_status_t play_cb(void *user_data, pj_uint32_t timestamp,
void *output, unsigned size)
{
return PJ_SUCCESS;
}
static pj_status_t rec_cb(void *user_data, pj_uint32_t timestamp,
const void *input, unsigned size)
{
return PJ_SUCCESS;
}
static int open_device(int dev_id, int capturing, int clock_rate,
int nchannel, int bits)
{
pj_status_t status;
unsigned nsamples;
pjmedia_snd_stream *strm;
nsamples = clock_rate * 20 / 1000;
printf( "Opening device %d: clockrate=%d, nchannel=%d, bits=%d, "
"nsamples=%d..\n",
dev_id, clock_rate, nchannel, bits, nsamples);
if (capturing) {
status = pjmedia_snd_open_recorder( dev_id, clock_rate, nchannel,
nsamples, bits, &rec_cb, NULL,
&strm);
} else {
status = pjmedia_snd_open_player( dev_id, clock_rate, nchannel,
nsamples, bits, &play_cb, NULL,
&strm);
}
if (status != PJ_SUCCESS) {
char errmsg[PJ_ERR_MSG_SIZE];
pj_strerror(status, errmsg, sizeof(errmsg));
printf( "Error: unable to open device %d for %s: %s (err=%d)\n",
dev_id, (capturing ? "capture" : "playback"),
errmsg, status);
return 1;
} else {
puts("Device opened successfully");
}
pjmedia_snd_stream_close(strm);
return 0;
}
int main(int argc, char *argv[])
{
pj_caching_pool cp;
pjmedia_endpt *med_endpt;
pj_status_t status;
/* Init pjlib */
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);
if (argc == 1) {
enum_devices();
return 0;
} else if (argc == 6) {
int dev_id;
int capturing;
int clock_rate;
int nchannel;
int bits;
dev_id = atoi(argv[1]);
capturing = (strcmp(argv[2], "r") == 0);
clock_rate = atoi(argv[3]);
nchannel = atoi(argv[4]);
bits = atoi(argv[5]);
return open_device(dev_id, capturing, clock_rate, nchannel, bits);
} else {
puts("Error: invalid arguments");
puts(desc);
return 1;
}
return 0;
}
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