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Diffstat (limited to 'drivers/staging/echo/oslec.h')
-rw-r--r--drivers/staging/echo/oslec.h86
1 files changed, 0 insertions, 86 deletions
diff --git a/drivers/staging/echo/oslec.h b/drivers/staging/echo/oslec.h
deleted file mode 100644
index bad852328a2..00000000000
--- a/drivers/staging/echo/oslec.h
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-/*
- * OSLEC - A line echo canceller. This code is being developed
- * against and partially complies with G168. Using code from SpanDSP
- *
- * Written by Steve Underwood <steveu@coppice.org>
- * and David Rowe <david_at_rowetel_dot_com>
- *
- * Copyright (C) 2001 Steve Underwood and 2007-2008 David Rowe
- *
- * 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 version 2, 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 General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#ifndef __OSLEC_H
-#define __OSLEC_H
-
-/* TODO: document interface */
-
-/* Mask bits for the adaption mode */
-#define ECHO_CAN_USE_ADAPTION 0x01
-#define ECHO_CAN_USE_NLP 0x02
-#define ECHO_CAN_USE_CNG 0x04
-#define ECHO_CAN_USE_CLIP 0x08
-#define ECHO_CAN_USE_TX_HPF 0x10
-#define ECHO_CAN_USE_RX_HPF 0x20
-#define ECHO_CAN_DISABLE 0x40
-
-/*!
- G.168 echo canceller descriptor. This defines the working state for a line
- echo canceller.
-*/
-struct oslec_state;
-
-/*! Create a voice echo canceller context.
- \param len The length of the canceller, in samples.
- \return The new canceller context, or NULL if the canceller could not be created.
-*/
-struct oslec_state *oslec_create(int len, int adaption_mode);
-
-/*! Free a voice echo canceller context.
- \param ec The echo canceller context.
-*/
-void oslec_free(struct oslec_state *ec);
-
-/*! Flush (reinitialise) a voice echo canceller context.
- \param ec The echo canceller context.
-*/
-void oslec_flush(struct oslec_state *ec);
-
-/*! Set the adaption mode of a voice echo canceller context.
- \param ec The echo canceller context.
- \param adapt The mode.
-*/
-void oslec_adaption_mode(struct oslec_state *ec, int adaption_mode);
-
-void oslec_snapshot(struct oslec_state *ec);
-
-/*! Process a sample through a voice echo canceller.
- \param ec The echo canceller context.
- \param tx The transmitted audio sample.
- \param rx The received audio sample.
- \return The clean (echo cancelled) received sample.
-*/
-int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx);
-
-/*! Process to high pass filter the tx signal.
- \param ec The echo canceller context.
- \param tx The transmitted auio sample.
- \return The HP filtered transmit sample, send this to your D/A.
-*/
-int16_t oslec_hpf_tx(struct oslec_state *ec, int16_t tx);
-
-#endif /* __OSLEC_H */