1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 /****************************************************************** 12 13 iLBC Speech Coder ANSI-C Source Code 14 15 WebRtcIlbcfix_Lsp2Lsf.h 16 17 ******************************************************************/ 18 19 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_LSP_TO_LSF_H_ 20 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_LSP_TO_LSF_H_ 21 22 #include "defines.h" 23 24 /*----------------------------------------------------------------* 25 * conversion from LSP coefficients to LSF coefficients 26 *---------------------------------------------------------------*/ 27 28 void WebRtcIlbcfix_Lsp2Lsf( 29 int16_t *lsp, /* (i) lsp vector -1...+1 in Q15 */ 30 int16_t *lsf, /* (o) Lsf vector 0...Pi in Q13 31 (ordered, so that lsf[i]<lsf[i+1]) */ 32 int16_t m /* (i) Number of coefficients */ 33 ); 34 35 #endif 36
