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Side by Side Diff: webrtc/modules/audio_coding/codecs/g711/include/g711_interface.h

Issue 1438663003: modules/audio_coding: Remove some codec include dirs (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Rebase again Created 5 years, 1 month ago
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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 #ifndef MODULES_AUDIO_CODING_CODECS_G711_MAIN_INCLUDE_G711_INTERFACE_H_
12 #define MODULES_AUDIO_CODING_CODECS_G711_MAIN_INCLUDE_G711_INTERFACE_H_
13
14 #include "webrtc/typedefs.h"
15
16 // Comfort noise constants
17 #define G711_WEBRTC_SPEECH 1
18 #define G711_WEBRTC_CNG 2
19
20 #ifdef __cplusplus
21 extern "C" {
22 #endif
23
24 /****************************************************************************
25 * WebRtcG711_EncodeA(...)
26 *
27 * This function encodes a G711 A-law frame and inserts it into a packet.
28 * Input speech length has be of any length.
29 *
30 * Input:
31 * - speechIn : Input speech vector
32 * - len : Samples in speechIn
33 *
34 * Output:
35 * - encoded : The encoded data vector
36 *
37 * Return value : Length (in bytes) of coded data.
38 * Always equal to len input parameter.
39 */
40
41 size_t WebRtcG711_EncodeA(const int16_t* speechIn,
42 size_t len,
43 uint8_t* encoded);
44
45 /****************************************************************************
46 * WebRtcG711_EncodeU(...)
47 *
48 * This function encodes a G711 U-law frame and inserts it into a packet.
49 * Input speech length has be of any length.
50 *
51 * Input:
52 * - speechIn : Input speech vector
53 * - len : Samples in speechIn
54 *
55 * Output:
56 * - encoded : The encoded data vector
57 *
58 * Return value : Length (in bytes) of coded data.
59 * Always equal to len input parameter.
60 */
61
62 size_t WebRtcG711_EncodeU(const int16_t* speechIn,
63 size_t len,
64 uint8_t* encoded);
65
66 /****************************************************************************
67 * WebRtcG711_DecodeA(...)
68 *
69 * This function decodes a packet G711 A-law frame.
70 *
71 * Input:
72 * - encoded : Encoded data
73 * - len : Bytes in encoded vector
74 *
75 * Output:
76 * - decoded : The decoded vector
77 * - speechType : 1 normal, 2 CNG (for G711 it should
78 * always return 1 since G711 does not have a
79 * built-in DTX/CNG scheme)
80 *
81 * Return value : >0 - Samples in decoded vector
82 * -1 - Error
83 */
84
85 size_t WebRtcG711_DecodeA(const uint8_t* encoded,
86 size_t len,
87 int16_t* decoded,
88 int16_t* speechType);
89
90 /****************************************************************************
91 * WebRtcG711_DecodeU(...)
92 *
93 * This function decodes a packet G711 U-law frame.
94 *
95 * Input:
96 * - encoded : Encoded data
97 * - len : Bytes in encoded vector
98 *
99 * Output:
100 * - decoded : The decoded vector
101 * - speechType : 1 normal, 2 CNG (for G711 it should
102 * always return 1 since G711 does not have a
103 * built-in DTX/CNG scheme)
104 *
105 * Return value : >0 - Samples in decoded vector
106 * -1 - Error
107 */
108
109 size_t WebRtcG711_DecodeU(const uint8_t* encoded,
110 size_t len,
111 int16_t* decoded,
112 int16_t* speechType);
113
114 /**********************************************************************
115 * WebRtcG711_Version(...)
116 *
117 * This function gives the version string of the G.711 codec.
118 *
119 * Input:
120 * - lenBytes: the size of Allocated space (in Bytes) where
121 * the version number is written to (in string format).
122 *
123 * Output:
124 * - version: Pointer to a buffer where the version number is
125 * written to.
126 *
127 */
128
129 int16_t WebRtcG711_Version(char* version, int16_t lenBytes);
130
131 #ifdef __cplusplus
132 }
133 #endif
134
135 #endif /* MODULES_AUDIO_CODING_CODECS_G711_MAIN_INCLUDE_G711_INCLUDE_H_ */
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