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