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-rw-r--r--drivers/speex/speex_stereo.h91
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diff --git a/drivers/speex/speex_stereo.h b/drivers/speex/speex_stereo.h
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--- a/drivers/speex/speex_stereo.h
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-/* Copyright (C) 2002 Jean-Marc Valin*/
-/**
- @file speex_stereo.h
- @brief Describes the handling for intensity stereo
-*/
-/*
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- - Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- - 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.
-
- - Neither the name of the Xiph.org Foundation nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``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 FOUNDATION OR
- CONTRIBUTORS 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 STEREO_H
-#define STEREO_H
-/** @defgroup SpeexStereoState SpeexStereoState: Handling Speex stereo files
- * This describes the Speex intensity stereo encoding/decoding
- * @{
- */
-
-#include "speex/speex_types.h"
-#include "speex/speex_bits.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/** If you access any of these fields directly, I'll personally come and bite you */
-typedef struct SpeexStereoState {
- float balance; /**< Left/right balance info */
- float e_ratio; /**< Ratio of energies: E(left+right)/[E(left)+E(right)] */
- float smooth_left; /**< Smoothed left channel gain */
- float smooth_right; /**< Smoothed right channel gain */
- float reserved1; /**< Reserved for future use */
- float reserved2; /**< Reserved for future use */
-} SpeexStereoState;
-
-/** Deprecated. Use speex_stereo_state_init() instead. */
-#define SPEEX_STEREO_STATE_INIT {1,.5,1,1,0,0}
-
-/** Initialise/create a stereo stereo state */
-SpeexStereoState *speex_stereo_state_init();
-
-/** Reset/re-initialise an already allocated stereo state */
-void speex_stereo_state_reset(SpeexStereoState *stereo);
-
-/** Destroy a stereo stereo state */
-void speex_stereo_state_destroy(SpeexStereoState *stereo);
-
-/** Transforms a stereo frame into a mono frame and stores intensity stereo info in 'bits' */
-void speex_encode_stereo(float *data, int frame_size, SpeexBits *bits);
-
-/** Transforms a stereo frame into a mono frame and stores intensity stereo info in 'bits' */
-void speex_encode_stereo_int(spx_int16_t *data, int frame_size, SpeexBits *bits);
-
-/** Transforms a mono frame into a stereo frame using intensity stereo info */
-void speex_decode_stereo(float *data, int frame_size, SpeexStereoState *stereo);
-
-/** Transforms a mono frame into a stereo frame using intensity stereo info */
-void speex_decode_stereo_int(spx_int16_t *data, int frame_size, SpeexStereoState *stereo);
-
-/** Callback handler for intensity stereo info */
-int speex_std_stereo_request_handler(SpeexBits *bits, void *state, void *data);
-
-#ifdef __cplusplus
-}
-#endif
-
-/** @} */
-#endif