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/*---------------------------------------------------------------------------*\
FILE........: c2demo.c
AUTHOR......: David Rowe
DATE CREATED: 15/11/2010
Encodes and decodes a file of raw speech samples using Codec 2.
Demonstrates use of Codec 2 function API.
cd codec2/build_linux
./demo/c2demo ../raw/hts1a.raw his1a_out.raw
aplay -f S16_LE hts1a_out.raw
\*---------------------------------------------------------------------------*/
/*
Copyright (C) 2010 David Rowe
All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License version 2.1, as
published by the Free Software Foundation. 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 Lesser General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include "codec2.h"
int main(int argc, char *argv[])
{
struct CODEC2 *codec2;
FILE *fin;
FILE *fout;
if (argc != 3) {
printf("usage: %s InputRawSpeechFile OutputRawSpeechFile\n", argv[0]);
exit(1);
}
if ( (fin = fopen(argv[1],"rb")) == NULL ) {
fprintf(stderr, "Error opening input speech file: %s\n", argv[1]);
exit(1);
}
if ( (fout = fopen(argv[2],"wb")) == NULL ) {
fprintf(stderr, "Error opening output speech file: %s\n", argv[2]);
exit(1);
}
/* Note only one set of Codec 2 states is required for an encoder
and decoder pair. */
codec2 = codec2_create(CODEC2_MODE_1300);
size_t nsam = codec2_samples_per_frame(codec2);
short speech_samples[nsam];
/* Bits from the encoder are packed into bytes */
unsigned char compressed_bytes[codec2_bytes_per_frame(codec2)];
while(fread(speech_samples, sizeof(short), nsam, fin) == nsam) {
codec2_encode(codec2, compressed_bytes, speech_samples);
codec2_decode(codec2, speech_samples, compressed_bytes);
fwrite(speech_samples, sizeof(short), nsam, fout);
}
codec2_destroy(codec2);
fclose(fin);
fclose(fout);
return 0;
}
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