xref: /aosp_15_r20/external/webrtc/modules/audio_coding/codecs/ilbc/gain_quant.h (revision d9f758449e529ab9291ac668be2861e7a55c2422)
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_GainQuant.h
16 
17 ******************************************************************/
18 
19 #ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_GAIN_QUANT_H_
20 #define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_GAIN_QUANT_H_
21 
22 #include <stdint.h>
23 
24 /*----------------------------------------------------------------*
25  *  quantizer for the gain in the gain-shape coding of residual
26  *---------------------------------------------------------------*/
27 
28 int16_t
29 WebRtcIlbcfix_GainQuant(               /* (o) quantized gain value */
30                         int16_t gain,  /* (i) gain value Q14 */
31                         int16_t maxIn, /* (i) maximum of gain value Q14 */
32                         int16_t stage, /* (i) The stage of the search */
33                         int16_t* index /* (o) quantization index */
34                         );
35 
36 #endif
37