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42 lines
2.3 KiB
42 lines
2.3 KiB
/*
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vad.h
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Copyright (C) 2011 Belledonne Communications, Grenoble, France
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Author : Johan Pascal
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef VAD_H
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#define VAD_H
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/*****************************************************************************/
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/* initBcg729VADChannel : create context structure and initialise it */
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/* return value : */
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/* - the VAD channel context data */
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/* */
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/*****************************************************************************/
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bcg729VADChannelContextStruct *initBcg729VADChannel();
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/*******************************************************************************************/
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/* bcg729_vad : voice activity detection from AnnexB */
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/* parameters: */
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/* -(i/o):VADChannelContext : context containing all informations needed for VAD */
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/* */
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/* returns : 1 for active voice frame, 0 for silence frame */
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/* */
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/*******************************************************************************************/
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uint8_t bcg729_vad(bcg729VADChannelContextStruct *VADChannelContext, word32_t reflectionCoefficient, word16_t *LSFCoefficients, word32_t *autoCorrelationCoefficients, int8_t autoCorrelationCoefficientsScale, const word16_t *signalCurrentFrame);
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#endif /* ifndef VAD_H */
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