1 /*
2  *  Copyright (c) 2014 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 WEBRTC_MODULES_AUDIO_CODING_CODECS_OPUS_OPUS_INST_H_
12 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_OPUS_OPUS_INST_H_
13 
14 #include <stddef.h>
15 
16 #include "opus.h"
17 
18 struct WebRtcOpusEncInst {
19   OpusEncoder* encoder;
20   size_t channels;
21   int in_dtx_mode;
22   // When Opus is in DTX mode, we use |zero_counts| to count consecutive zeros
23   // to break long zero segment so as to prevent DTX from going wrong. We use
24   // one counter for each channel. After each encoding, |zero_counts| contain
25   // the remaining zeros from the last frame.
26   // TODO(minyue): remove this when Opus gets an internal fix to DTX.
27   size_t* zero_counts;
28 };
29 
30 struct WebRtcOpusDecInst {
31   OpusDecoder* decoder;
32   int prev_decoded_samples;
33   size_t channels;
34   int in_dtx_mode;
35 };
36 
37 
38 #endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_OPUS_OPUS_INST_H_
39