1b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*
2b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *
4b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *  Use of this source code is governed by a BSD-style license
5b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *  that can be found in the LICENSE file in the root of the source
6b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *  tree. An additional intellectual property rights grant can be found
7b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *  in the file PATENTS.  All contributing project authors may
8b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *  be found in the AUTHORS file in the root of the source tree.
9b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org */
10b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
11b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/******************************************************************
12b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
13b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org iLBC Speech Coder ANSI-C Source Code
14b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
15b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org WebRtcIlbcfix_SimpleInterpolateLsf.h
16b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
17b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org******************************************************************/
18b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
19b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_SIMPLE_INTERPOLATE_LSF_H_
20b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_SIMPLE_INTERPOLATE_LSF_H_
21b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
22b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#include "defines.h"
23b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
24b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*----------------------------------------------------------------*
25b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *  lsf interpolator (subrutine to LPCencode)
26b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *---------------------------------------------------------------*/
27b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
28b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.orgvoid WebRtcIlbcfix_SimpleInterpolateLsf(
29fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org    int16_t *syntdenum, /* (o) the synthesis filter denominator
30b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org                                   resulting from the quantized
31b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org                                   interpolated lsf Q12 */
32fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org    int16_t *weightdenum, /* (o) the weighting filter denominator
33b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org                                   resulting from the unquantized
34b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org                                   interpolated lsf Q12 */
35fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org    int16_t *lsf,  /* (i) the unquantized lsf coefficients Q13 */
36fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org    int16_t *lsfdeq,  /* (i) the dequantized lsf coefficients Q13 */
37fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org    int16_t *lsfold,  /* (i) the unquantized lsf coefficients of
38b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org                                           the previous signal frame Q13 */
39fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org    int16_t *lsfdeqold, /* (i) the dequantized lsf coefficients of the
40b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org                                   previous signal frame Q13 */
41fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org    int16_t length,  /* (i) should equate FILTERORDER */
42b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org    iLBC_Enc_Inst_t *iLBCenc_inst
43b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org    /* (i/o) the encoder state structure */
44b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org                                        );
45b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org
46b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#endif
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