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author | Johnathan Corgan | 2011-07-18 15:54:43 -0700 |
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committer | Johnathan Corgan | 2011-07-18 16:36:15 -0700 |
commit | b409a4b0c6131e01fc5a03c0fc31caa4829b0dec (patch) | |
tree | 51ec0115bd114716672f0659800cda933cfc77dd /gr-vocoder/lib/codec2/c2demo.c | |
parent | c067ea65d7433d4111b344ded6dfbf089062cf33 (diff) | |
download | gnuradio-b409a4b0c6131e01fc5a03c0fc31caa4829b0dec.tar.gz gnuradio-b409a4b0c6131e01fc5a03c0fc31caa4829b0dec.tar.bz2 gnuradio-b409a4b0c6131e01fc5a03c0fc31caa4829b0dec.zip |
gr-vocoder: re-implemented gr-codec2-vocoder inside gr-vocoder
Diffstat (limited to 'gr-vocoder/lib/codec2/c2demo.c')
-rw-r--r-- | gr-vocoder/lib/codec2/c2demo.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/gr-vocoder/lib/codec2/c2demo.c b/gr-vocoder/lib/codec2/c2demo.c new file mode 100644 index 000000000..efa8d6449 --- /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; +} |