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diff --git a/include/osmocom/dsp/cfile.h b/include/osmocom/dsp/cfile.h
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+/*
+ * cfile.h
+ *
+ * Helpers to read .cfile (complex samples from gnuradio)
+ *
+ * Copyright (C) 2011 Sylvain Munaut <tnt@246tNt.com>
+ *
+ * All Rights Reserved
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __OSMO_DSP_CFILE_H__
+#define __OSMO_DSP_CFILE_H__
+
+/*! \defgroup cfile .cfile helpers
+ * @{
+ */
+
+/*! \file cfile.h
+ * \brief Osmocom .cfile helpers header
+ */
+
+#include <complex.h>
+
+/*! \brief Structure representing a currently mapped .cfile */
+struct cfile {
+ float complex *data; /*!< \brief Data array (read only !) */
+ unsigned int len; /*!< \brief Length (in samples) of the data */
+ size_t _blen; /*!< \brief Length (in bytes) of the data */
+};
+
+struct cfile *cfile_load(const char *filename);
+void cfile_release(struct cfile *cf);
+
+/*! @} */
+
+#endif /* __OSMO_DSP_CFILE_H__ */