ref: 397265f5791291defa76487c2388e1898e2e433c
dir: /src/audio/auclient.c/
/*************************************************************************/
/* */
/* Language Technologies Institute */
/* Carnegie Mellon University */
/* Copyright (c) 2000 */
/* All Rights Reserved. */
/* */
/* Permission is hereby granted, free of charge, to use and distribute */
/* this software and its documentation without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of this work, and to */
/* permit persons to whom this work is furnished to do so, subject to */
/* the following conditions: */
/* 1. The code must retain the above copyright notice, this list of */
/* conditions and the following disclaimer. */
/* 2. Any modifications must be clearly marked as such. */
/* 3. Original authors' names are not deleted. */
/* 4. The authors' names are not used to endorse or promote products */
/* derived from this software without specific prior written */
/* permission. */
/* */
/* CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK */
/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
/* SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE */
/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* Author: Alan W Black (awb@cs.cmu.edu) */
/* Date: October 2000 */
/*************************************************************************/
/* */
/* A client/server audio play program */
/* */
/* Server listens to a socket and play anything coming in (streaming) */
/* Client just sends (snd) headered waveform to named socket */
/* */
/* Client side */
/* */
/*************************************************************************/
#include <stdlib.h>
#include "cst_file.h"
#include "cst_socket.h"
#include "cst_string.h"
#include "cst_wave.h"
#include "cst_audio.h"
#ifndef CST_NO_SOCKETS
#include <unistd.h>
int play_wave_client(cst_wave *w,const char *servername,int port,
const char *encoding)
{
int audiofd,q,i,n,r;
int sample_width;
unsigned char bytes[CST_AUDIOBUFFSIZE];
short shorts[CST_AUDIOBUFFSIZE];
snd_header header;
if (!w)
return CST_ERROR_FORMAT;
if ((audiofd = cst_socket_open(servername,port)) == 0)
return CST_ERROR_FORMAT;
header.magic = (unsigned int)0x2e736e64;
header.hdr_size = sizeof(header);
if (cst_streq(encoding,"ulaw"))
{
sample_width = 1;
header.encoding = 1; /* ulaw */
}
else if (cst_streq(encoding,"uchar"))
{
sample_width = 1;
header.encoding = 2; /* unsigned char */
}
else
{
sample_width = 2;
header.encoding = 3; /* short */
}
header.data_size = sample_width * w->num_samples * w->num_channels;
header.sample_rate = w->sample_rate;
header.channels = w->num_channels;
if (CST_LITTLE_ENDIAN)
{ /* If I'm intel etc swap things, so "network byte order" */
header.magic = SWAPINT(header.magic);
header.hdr_size = SWAPINT(header.hdr_size);
header.data_size = SWAPINT(header.data_size);
header.encoding = SWAPINT(header.encoding);
header.sample_rate = SWAPINT(header.sample_rate);
header.channels = SWAPINT(header.channels);
}
if (write(audiofd, &header, sizeof(header)) != sizeof(header))
{
cst_errmsg("auclinet: failed to write header to server\n");
return CST_ERROR_FORMAT;
}
for (i=0; i < w->num_samples; i += r)
{
if (w->num_samples > i+CST_AUDIOBUFFSIZE)
n = CST_AUDIOBUFFSIZE;
else
n = w->num_samples-i;
if (cst_streq(encoding,"ulaw"))
{
for (q=0; q<n; q++)
bytes[q] = cst_short_to_ulaw(w->samples[i+q]);
r = write(audiofd,bytes,n);
}
else
{
for (q=0; q<n; q++)
if (CST_LITTLE_ENDIAN)
shorts[q] = SWAPSHORT(w->samples[i+q]);
else
shorts[q] = w->samples[i+q];
r = write(audiofd,shorts,n*2);
r /= 2;
}
if (r <= 0)
cst_errmsg("failed to write %d samples\n",n);
}
cst_socket_close(audiofd);
return CST_OK_FORMAT;
}
#endif