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35 lines
1.8 KiB
35 lines
1.8 KiB
/*
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decodeFixedCodeVector.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 DECODEFIXEDCODEVECTOR_H
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#define DECODEFIXEDCODEVECTOR_H
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/*****************************************************************************/
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/* decodeFixedCodeVector : compute the fixed codebook vector as in spec 4.1.4*/
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/* parameters: */
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/* -(i) signs: parameter S(4 signs bit) eq61 */
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/* -(i) positions: parameter C(4 3bits position and jx bit) eq62 */
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/* -(i) intPitchDelay: integer part of pitch Delay (T) */
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/* -(i) boundedPitchGain: Beta in eq47 and eq48, in Q14 */
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/* -(o) fixedCodebookVector: 40 values in Q13, range: [-1.8,+1.8] */
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/* */
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/*****************************************************************************/
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void decodeFixedCodeVector(uint16_t signs, uint16_t positions, int16_t intPitchDelay, word16_t boundedPitchGain,
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word16_t *fixedCodebookVector);
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#endif /* ifndef DECODEFIXEDCODEVECTOR_H */
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