mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-13 22:00:47 +01:00
988cc0870b
This CL is the result of running include-what-you-use tool on part of the code base (audio target and dependencies) plus manual fixes. bug: webrtc:8311 Change-Id: I277d281ce943c3ecc1bd45fd8d83055931743604 Reviewed-on: https://webrtc-review.googlesource.com/c/106280 Commit-Queue: Yves Gerey <yvesg@google.com> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25311}
91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
/*
|
|
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include "modules/audio_processing/vad/standalone_vad.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include "common_audio/vad/include/webrtc_vad.h"
|
|
#include "rtc_base/checks.h"
|
|
|
|
namespace webrtc {
|
|
|
|
static const int kDefaultStandaloneVadMode = 3;
|
|
|
|
StandaloneVad::StandaloneVad(VadInst* vad)
|
|
: vad_(vad), buffer_(), index_(0), mode_(kDefaultStandaloneVadMode) {}
|
|
|
|
StandaloneVad::~StandaloneVad() {
|
|
WebRtcVad_Free(vad_);
|
|
}
|
|
|
|
StandaloneVad* StandaloneVad::Create() {
|
|
VadInst* vad = WebRtcVad_Create();
|
|
if (!vad)
|
|
return nullptr;
|
|
|
|
int err = WebRtcVad_Init(vad);
|
|
err |= WebRtcVad_set_mode(vad, kDefaultStandaloneVadMode);
|
|
if (err != 0) {
|
|
WebRtcVad_Free(vad);
|
|
return nullptr;
|
|
}
|
|
return new StandaloneVad(vad);
|
|
}
|
|
|
|
int StandaloneVad::AddAudio(const int16_t* data, size_t length) {
|
|
if (length != kLength10Ms)
|
|
return -1;
|
|
|
|
if (index_ + length > kLength10Ms * kMaxNum10msFrames)
|
|
// Reset the buffer if it's full.
|
|
// TODO(ajm): Instead, consider just processing every 10 ms frame. Then we
|
|
// can forgo the buffering.
|
|
index_ = 0;
|
|
|
|
memcpy(&buffer_[index_], data, sizeof(int16_t) * length);
|
|
index_ += length;
|
|
return 0;
|
|
}
|
|
|
|
int StandaloneVad::GetActivity(double* p, size_t length_p) {
|
|
if (index_ == 0)
|
|
return -1;
|
|
|
|
const size_t num_frames = index_ / kLength10Ms;
|
|
if (num_frames > length_p)
|
|
return -1;
|
|
RTC_DCHECK_EQ(0, WebRtcVad_ValidRateAndFrameLength(kSampleRateHz, index_));
|
|
|
|
int activity = WebRtcVad_Process(vad_, kSampleRateHz, buffer_, index_);
|
|
if (activity < 0)
|
|
return -1;
|
|
else if (activity == 0)
|
|
p[0] = 0.01; // Arbitrary but small and non-zero.
|
|
else
|
|
p[0] = 0.5; // 0.5 is neutral values when combinned by other probabilities.
|
|
for (size_t n = 1; n < num_frames; n++)
|
|
p[n] = p[0];
|
|
// Reset the buffer to start from the beginning.
|
|
index_ = 0;
|
|
return activity;
|
|
}
|
|
|
|
int StandaloneVad::set_mode(int mode) {
|
|
if (mode < 0 || mode > 3)
|
|
return -1;
|
|
if (WebRtcVad_set_mode(vad_, mode) != 0)
|
|
return -1;
|
|
|
|
mode_ = mode;
|
|
return 0;
|
|
}
|
|
|
|
} // namespace webrtc
|