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diff --git a/pjmedia/src/pjmedia-codec/speex/speex_preprocess.h b/pjmedia/src/pjmedia-codec/speex/speex_preprocess.h
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index a6845b42..00000000
--- a/pjmedia/src/pjmedia-codec/speex/speex_preprocess.h
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-/* Copyright (C) 2003 Epic Games
-   Written by Jean-Marc Valin */
-/**
- *  @file speex_preprocess.h
- *  @brief Speex preprocessor. The preprocess can do noise suppression, 
- * residual echo suppression (after using the echo canceller), automatic
- * gain control (AGC) and voice activity detection (VAD).
-*/
-/*
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are
-   met:
-
-   1. Redistributions of source code must retain the above copyright notice,
-   this list of conditions and the following disclaimer.
-
-   2. Redistributions in binary form must reproduce the above copyright
-   notice, this list of conditions and the following disclaimer in the
-   documentation and/or other materials provided with the distribution.
-
-   3. The name of the author may not be used to endorse or promote products
-   derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
-   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-   POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#ifndef SPEEX_PREPROCESS_H
-#define SPEEX_PREPROCESS_H
-/** @defgroup SpeexPreprocessState SpeexPreprocessState: The Speex preprocessor
- *  This is the Speex preprocessor. The preprocess can do noise suppression, 
- * residual echo suppression (after using the echo canceller), automatic
- * gain control (AGC) and voice activity detection (VAD).
- *  @{
- */
-
-#include "speex/speex_types.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-   
-/** State of the preprocessor (one per channel). Should never be accessed directly. */
-struct SpeexPreprocessState_;
-
-/** State of the preprocessor (one per channel). Should never be accessed directly. */
-typedef struct SpeexPreprocessState_ SpeexPreprocessState;
-
-
-/** Creates a new preprocessing state. You MUST create one state per channel processed.
- * @param frame_size Number of samples to process at one time (should correspond to 10-20 ms). Must be
- * the same value as that used for the echo canceller for residual echo cancellation to work.
- * @param sampling_rate Sampling rate used for the input.
- * @return Newly created preprocessor state
-*/
-SpeexPreprocessState *speex_preprocess_state_init(int frame_size, int sampling_rate);
-
-/** Destroys a preprocessor state 
- * @param st Preprocessor state to destroy
-*/
-void speex_preprocess_state_destroy(SpeexPreprocessState *st);
-
-/** Preprocess a frame 
- * @param st Preprocessor state
- * @param x Audio sample vector (in and out). Must be same size as specified in speex_preprocess_state_init().
- * @return Bool value for voice activity (1 for speech, 0 for noise/silence), ONLY if VAD turned on.
-*/
-int speex_preprocess_run(SpeexPreprocessState *st, spx_int16_t *x);
-
-/** Preprocess a frame (deprecated, use speex_preprocess_run() instead)*/
-int speex_preprocess(SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo);
-
-/** Update preprocessor state, but do not compute the output
- * @param st Preprocessor state
- * @param x Audio sample vector (in only). Must be same size as specified in speex_preprocess_state_init().
-*/
-void speex_preprocess_estimate_update(SpeexPreprocessState *st, spx_int16_t *x);
-
-/** Used like the ioctl function to control the preprocessor parameters 
- * @param st Preprocessor state
- * @param request ioctl-type request (one of the SPEEX_PREPROCESS_* macros)
- * @param ptr Data exchanged to-from function
- * @return 0 if no error, -1 if request in unknown
-*/
-int speex_preprocess_ctl(SpeexPreprocessState *st, int request, void *ptr);
-
-
-
-/** Set preprocessor denoiser state */
-#define SPEEX_PREPROCESS_SET_DENOISE 0
-/** Get preprocessor denoiser state */
-#define SPEEX_PREPROCESS_GET_DENOISE 1
-
-/** Set preprocessor Automatic Gain Control state */
-#define SPEEX_PREPROCESS_SET_AGC 2
-/** Get preprocessor Automatic Gain Control state */
-#define SPEEX_PREPROCESS_GET_AGC 3
-
-/** Set preprocessor Voice Activity Detection state */
-#define SPEEX_PREPROCESS_SET_VAD 4
-/** Get preprocessor Voice Activity Detection state */
-#define SPEEX_PREPROCESS_GET_VAD 5
-
-/** Set preprocessor Automatic Gain Control level */
-#define SPEEX_PREPROCESS_SET_AGC_LEVEL 6
-/** Get preprocessor Automatic Gain Control level */
-#define SPEEX_PREPROCESS_GET_AGC_LEVEL 7
-
-/** Set preprocessor dereverb state */
-#define SPEEX_PREPROCESS_SET_DEREVERB 8
-/** Get preprocessor dereverb state */
-#define SPEEX_PREPROCESS_GET_DEREVERB 9
-
-/** Set preprocessor dereverb level */
-#define SPEEX_PREPROCESS_SET_DEREVERB_LEVEL 10
-/** Get preprocessor dereverb level */
-#define SPEEX_PREPROCESS_GET_DEREVERB_LEVEL 11
-
-/** Set preprocessor dereverb decay */
-#define SPEEX_PREPROCESS_SET_DEREVERB_DECAY 12
-/** Get preprocessor dereverb decay */
-#define SPEEX_PREPROCESS_GET_DEREVERB_DECAY 13
-
-/** Set probability required for the VAD to go from silence to voice */
-#define SPEEX_PREPROCESS_SET_PROB_START 14
-/** Get probability required for the VAD to go from silence to voice */
-#define SPEEX_PREPROCESS_GET_PROB_START 15
-
-/** Set probability required for the VAD to stay in the voice state (integer percent) */
-#define SPEEX_PREPROCESS_SET_PROB_CONTINUE 16
-/** Get probability required for the VAD to stay in the voice state (integer percent) */
-#define SPEEX_PREPROCESS_GET_PROB_CONTINUE 17
-
-/** Set maximum attenuation of the noise in dB (negative number) */
-#define SPEEX_PREPROCESS_SET_NOISE_SUPPRESS 18
-/** Get maximum attenuation of the noise in dB (negative number) */
-#define SPEEX_PREPROCESS_GET_NOISE_SUPPRESS 19
-
-/** Set maximum attenuation of the residual echo in dB (negative number) */
-#define SPEEX_PREPROCESS_SET_ECHO_SUPPRESS 20
-/** Get maximum attenuation of the residual echo in dB (negative number) */
-#define SPEEX_PREPROCESS_GET_ECHO_SUPPRESS 21
-
-/** Set maximum attenuation of the residual echo in dB when near end is active (negative number) */
-#define SPEEX_PREPROCESS_SET_ECHO_SUPPRESS_ACTIVE 22
-/** Get maximum attenuation of the residual echo in dB when near end is active (negative number) */
-#define SPEEX_PREPROCESS_GET_ECHO_SUPPRESS_ACTIVE 23
-
-/** Set the corresponding echo canceller state so that residual echo suppression can be performed (NULL for no residual echo suppression) */
-#define SPEEX_PREPROCESS_SET_ECHO_STATE 24
-/** Get the corresponding echo canceller state */
-#define SPEEX_PREPROCESS_GET_ECHO_STATE 25
-
-#ifdef __cplusplus
-}
-#endif
-
-/** @}*/
-#endif