From b409a4b0c6131e01fc5a03c0fc31caa4829b0dec Mon Sep 17 00:00:00 2001
From: Johnathan Corgan <jcorgan@corganenterprises.com>
Date: Mon, 18 Jul 2011 15:54:43 -0700
Subject: gr-vocoder: re-implemented gr-codec2-vocoder inside gr-vocoder
---
gr-vocoder/lib/codec2/c2demo.c | 86 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 86 insertions(+)
create mode 100644 gr-vocoder/lib/codec2/c2demo.c
(limited to 'gr-vocoder/lib/codec2/c2demo.c')
diff --git a/gr-vocoder/lib/codec2/c2demo.c b/gr-vocoder/lib/codec2/c2demo.c
new file mode 100644
index 0000000000..efa8d6449a
--- /dev/null
+++ b/gr-vocoder/lib/codec2/c2demo.c
@@ -0,0 +1,86 @@
+/*---------------------------------------------------------------------------*\
+
+ 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.
+
+ Note to convert a wave file to raw and vice-versa:
+
+ $ sox file.wav -r 8000 -s -2 file.raw
+ $ sox -r 8000 -s -2 file.raw file.wav
+
+\*---------------------------------------------------------------------------*/
+
+/*
+ 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 "codec2.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#define BITS_SIZE ((CODEC2_BITS_PER_FRAME + 7) / 8)
+
+int main(int argc, char *argv[])
+{
+ void *codec2;
+ FILE *fin;
+ FILE *fout;
+ short buf[CODEC2_SAMPLES_PER_FRAME];
+ unsigned char bits[BITS_SIZE];
+
+ 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: %s.\n",
+ argv[1], strerror(errno));
+ exit(1);
+ }
+
+ if ( (fout = fopen(argv[2],"wb")) == NULL ) {
+ fprintf(stderr, "Error opening output speech file: %s: %s.\n",
+ argv[2], strerror(errno));
+ exit(1);
+ }
+
+ /* Note only one set of Codec 2 states is required for an encoder
+ and decoder pair. */
+
+ codec2 = codec2_create();
+
+ while(fread(buf, sizeof(short), CODEC2_SAMPLES_PER_FRAME, fin) ==
+ CODEC2_SAMPLES_PER_FRAME) {
+ codec2_encode(codec2, bits, buf);
+ codec2_decode(codec2, buf, bits);
+ fwrite(buf, sizeof(short), CODEC2_SAMPLES_PER_FRAME, fout);
+ }
+
+ codec2_destroy(codec2);
+
+ fclose(fin);
+ fclose(fout);
+
+ return 0;
+}
--
cgit v1.2.3