Index: src/io/sink.c
===================================================================
--- src/io/sink.c	(revision 93161739a1130209af623dae66943e1c5c95f183)
+++ src/io/sink.c	(revision 93161739a1130209af623dae66943e1c5c95f183)
@@ -0,0 +1,41 @@
+/*
+  Copyright (C) 2012 Paul Brossier <piem@aubio.org>
+
+  This file is part of aubio.
+
+  aubio 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 3 of the License, or
+  (at your option) any later version.
+
+  aubio 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 aubio.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "config.h"
+#include "aubio_priv.h"
+#include "fvec.h"
+#include "io/sink.h"
+
+struct _aubio_sink_t { 
+  uint_t hopsize;
+  uint_t samplerate;
+};
+
+aubio_sink_t * new_aubio_sink(char_t * uri, uint_t hop_size, uint_t samplerate) {
+  return NULL;
+}
+
+uint_t aubio_sink_do(aubio_sink_t * s, fvec_t * write_data) {
+  return 0;
+}
+
+void del_aubio_sink(aubio_sink_t * s) {
+  return;
+}
Index: src/io/sink.h
===================================================================
--- src/io/sink.h	(revision 93161739a1130209af623dae66943e1c5c95f183)
+++ src/io/sink.h	(revision 93161739a1130209af623dae66943e1c5c95f183)
@@ -0,0 +1,43 @@
+/*
+  Copyright (C) 2012 Paul Brossier <piem@aubio.org>
+
+  This file is part of aubio.
+
+  aubio 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 3 of the License, or
+  (at your option) any later version.
+
+  aubio 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 aubio.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#ifndef _AUBIO_SINK_H
+#define _AUBIO_SINK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** \file
+
+  Media sink
+
+*/
+
+typedef struct _aubio_sink_t aubio_sink_t;
+aubio_sink_t * new_aubio_sink(char_t * uri, uint_t hop_size, uint_t samplerate);
+uint_t aubio_sink_do(aubio_sink_t * s, fvec_t * write_data);
+void del_aubio_sink(aubio_sink_t * s);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _AUBIO_SINK_H */
Index: src/io/source.c
===================================================================
--- src/io/source.c	(revision 93161739a1130209af623dae66943e1c5c95f183)
+++ src/io/source.c	(revision 93161739a1130209af623dae66943e1c5c95f183)
@@ -0,0 +1,42 @@
+/*
+  Copyright (C) 2012 Paul Brossier <piem@aubio.org>
+
+  This file is part of aubio.
+
+  aubio 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 3 of the License, or
+  (at your option) any later version.
+
+  aubio 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 aubio.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "config.h"
+#include "aubio_priv.h"
+#include "fvec.h"
+#include "io/source.h"
+
+struct _aubio_source_t { 
+  uint_t hopsize;
+  uint_t samplerate;
+};
+
+aubio_source_t * new_aubio_source(char_t * uri, uint_t hop_size, uint_t samplerate) {
+  return NULL;
+}
+
+fvec_t * aubio_source_do(aubio_source_t * s, fvec_t * write_data) {
+  return NULL;
+}
+
+void del_aubio_source(aubio_source_t * s) {
+  return;
+}
+
Index: src/io/source.h
===================================================================
--- src/io/source.h	(revision 93161739a1130209af623dae66943e1c5c95f183)
+++ src/io/source.h	(revision 93161739a1130209af623dae66943e1c5c95f183)
@@ -0,0 +1,43 @@
+/*
+  Copyright (C) 2012 Paul Brossier <piem@aubio.org>
+
+  This file is part of aubio.
+
+  aubio 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 3 of the License, or
+  (at your option) any later version.
+
+  aubio 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 aubio.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#ifndef _AUBIO_SOURCE_H
+#define _AUBIO_SOURCE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** \file
+
+  Media source 
+
+*/
+
+typedef struct _aubio_source_t aubio_source_t;
+aubio_source_t * new_aubio_source(char_t * uri, uint_t hop_size, uint_t samplerate);
+fvec_t * aubio_source_do(aubio_source_t * s);
+void del_aubio_source(aubio_source_t * s);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _AUBIO_SOURCE_H */
