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36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/******************************************************************
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iLBC Speech Coder ANSI-C Source Code
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WebRtcIlbcfix_Poly2Lsp.h
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******************************************************************/
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#ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_POLY_TO_LSP_H_
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#define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_POLY_TO_LSP_H_
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#include <stdint.h>
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/*----------------------------------------------------------------*
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* conversion from lpc coefficients to lsp coefficients
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* function is only for 10:th order LPC
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*---------------------------------------------------------------*/
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void WebRtcIlbcfix_Poly2Lsp(
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int16_t* a, /* (o) A coefficients in Q12 */
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int16_t* lsp, /* (i) LSP coefficients in Q15 */
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int16_t* old_lsp /* (i) old LSP coefficients that are used if the new
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coefficients turn out to be unstable */
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);
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#endif
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