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60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
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/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_CLASSIFIER_H_
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#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_CLASSIFIER_H_
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#include "celt.h"
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#include "analysis.h"
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#include "opus_private.h"
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#if defined(__cplusplus)
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}
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#endif
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#include "webrtc/system_wrappers/interface/scoped_ptr.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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// This class provides a speech/music classification and is a wrapper over the
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// Opus classifier. It currently only supports 48 kHz mono or stereo with a
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// frame size of 20 ms.
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class AudioClassifier {
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public:
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AudioClassifier();
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virtual ~AudioClassifier();
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// Classifies one frame of audio data in input,
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// input_length : must be channels * 960;
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// channels : must be 1 (mono) or 2 (stereo).
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bool Analysis(const int16_t* input, int input_length, int channels);
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// Gets the current classification : true = music, false = speech.
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virtual bool is_music() const { return is_music_; }
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// Gets the current music probability.
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float music_probability() const { return music_probability_; }
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private:
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AnalysisInfo analysis_info_;
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bool is_music_;
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float music_probability_;
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const CELTMode* celt_mode_;
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TonalityAnalysisState analysis_state_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_CLASSIFIER_H_
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