xref: /aosp_15_r20/external/webrtc/modules/audio_coding/codecs/ilbc/refiner.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_Refiner.h
16 
17 ******************************************************************/
18 
19 #ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_REFINER_H_
20 #define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_REFINER_H_
21 
22 #include <stddef.h>
23 #include <stdint.h>
24 
25 /*----------------------------------------------------------------*
26  * find segment starting near idata+estSegPos that has highest
27  * correlation with idata+centerStartPos through
28  * idata+centerStartPos+ENH_BLOCKL-1 segment is found at a
29  * resolution of ENH_UPSO times the original of the original
30  * sampling rate
31  *---------------------------------------------------------------*/
32 
33 void WebRtcIlbcfix_Refiner(
34     size_t* updStartPos,   /* (o) updated start point (Q-2) */
35     int16_t* idata,        /* (i) original data buffer */
36     size_t idatal,         /* (i) dimension of idata */
37     size_t centerStartPos, /* (i) beginning center segment */
38     size_t estSegPos,      /* (i) estimated beginning other segment (Q-2) */
39     int16_t* surround,     /* (i/o) The contribution from this sequence
40                                     summed with earlier contributions */
41     int16_t gain           /* (i) Gain to use for this sequence */
42     );
43 
44 #endif
45