| /* ------------------------------------------------------------------ |
| * Copyright (C) 1998-2009 PacketVideo |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| * express or implied. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * ------------------------------------------------------------------- |
| */ |
| /**************************************************************************************** |
| Portions of this file are derived from the following 3GPP standard: |
| |
| 3GPP TS 26.073 |
| ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec |
| Available from http://www.3gpp.org |
| |
| (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) |
| Permission to distribute, modify and use this file under the standard license |
| terms listed above has been obtained from the copyright holder. |
| ****************************************************************************************/ |
| /* |
| ******************************************************************************** |
| * |
| * GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001 |
| * R99 Version 3.2.0 |
| * REL-4 Version 4.0.0 |
| * |
| ******************************************************************************** |
| * |
| * File : d_gain_p.h |
| * Purpose : Decodes the pitch gain using the received index. |
| * |
| ******************************************************************************** |
| */ |
| #ifndef d_gain_p_h |
| #define d_gain_p_h "$Id $" |
| |
| /* |
| ******************************************************************************** |
| * INCLUDE FILES |
| ******************************************************************************** |
| */ |
| #include "typedef.h" |
| #include "mode.h" |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| /* |
| ************************************************************************** |
| * |
| * Function : d_gain_pitch |
| * Purpose : Decodes the pitch gain using the received index. |
| * Description : In case of no frame erasure, the gain is obtained |
| * from the quantization table at the given index; |
| * otherwise, a downscaled past gain is used. |
| * Returns : Quantized pitch gain |
| * |
| ************************************************************************** |
| */ |
| Word16 d_gain_pitch( /* return value: gain (Q14) */ |
| enum Mode mode, /* i : AMR mode */ |
| Word16 index /* i : index of quantization */ |
| ); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |
