| /* |
| * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| /****************************************************************** |
| |
| iLBC Speech Coder ANSI-C Source Code |
| |
| WebRtcIlbcfix_SimpleInterpolateLsf.h |
| |
| ******************************************************************/ |
| |
| #ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_SIMPLE_INTERPOLATE_LSF_H_ |
| #define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_SIMPLE_INTERPOLATE_LSF_H_ |
| |
| #include "modules/audio_coding/codecs/ilbc/defines.h" |
| |
| /*----------------------------------------------------------------* |
| * lsf interpolator (subrutine to LPCencode) |
| *---------------------------------------------------------------*/ |
| |
| void WebRtcIlbcfix_SimpleInterpolateLsf( |
| int16_t* syntdenum, /* (o) the synthesis filter denominator |
| resulting from the quantized |
| interpolated lsf Q12 */ |
| int16_t* weightdenum, /* (o) the weighting filter denominator |
| resulting from the unquantized |
| interpolated lsf Q12 */ |
| int16_t* lsf, /* (i) the unquantized lsf coefficients Q13 */ |
| int16_t* lsfdeq, /* (i) the dequantized lsf coefficients Q13 */ |
| int16_t* lsfold, /* (i) the unquantized lsf coefficients of |
| the previous signal frame Q13 */ |
| int16_t* lsfdeqold, /* (i) the dequantized lsf coefficients of the |
| previous signal frame Q13 */ |
| int16_t length, /* (i) should equate FILTERORDER */ |
| IlbcEncoder* iLBCenc_inst |
| /* (i/o) the encoder state structure */ |
| ); |
| |
| #endif |
