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/*
* 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 "webrtc/modules/audio_processing/level_estimator_impl.h"
#include "webrtc/modules/audio_processing/audio_buffer.h"
#include "webrtc/modules/audio_processing/include/audio_processing.h"
#include "webrtc/modules/audio_processing/rms_level.h"
#include "webrtc/system_wrappers/include/critical_section_wrapper.h"
namespace webrtc {
LevelEstimatorImpl::LevelEstimatorImpl(const AudioProcessing* apm,
CriticalSectionWrapper* crit)
: ProcessingComponent(),
crit_(crit) {}
LevelEstimatorImpl::~LevelEstimatorImpl() {}
int LevelEstimatorImpl::ProcessStream(AudioBuffer* audio) {
if (!is_component_enabled()) {
return AudioProcessing::kNoError;
}
RMSLevel* rms_level = static_cast<RMSLevel*>(handle(0));
for (int i = 0; i < audio->num_channels(); ++i) {
rms_level->Process(audio->channels_const()[i],
audio->num_frames());
}
return AudioProcessing::kNoError;
}
int LevelEstimatorImpl::Enable(bool enable) {
CriticalSectionScoped crit_scoped(crit_);
return EnableComponent(enable);
}
bool LevelEstimatorImpl::is_enabled() const {
return is_component_enabled();
}
int LevelEstimatorImpl::RMS() {
if (!is_component_enabled()) {
return AudioProcessing::kNotEnabledError;
}
RMSLevel* rms_level = static_cast<RMSLevel*>(handle(0));
return rms_level->RMS();
}
// The ProcessingComponent implementation is pretty weird in this class since
// we have only a single instance of the trivial underlying component.
void* LevelEstimatorImpl::CreateHandle() const {
return new RMSLevel;
}
void LevelEstimatorImpl::DestroyHandle(void* handle) const {
delete static_cast<RMSLevel*>(handle);
}
int LevelEstimatorImpl::InitializeHandle(void* handle) const {
static_cast<RMSLevel*>(handle)->Reset();
return AudioProcessing::kNoError;
}
int LevelEstimatorImpl::ConfigureHandle(void* /*handle*/) const {
return AudioProcessing::kNoError;
}
int LevelEstimatorImpl::num_handles_required() const {
return 1;
}
int LevelEstimatorImpl::GetHandleError(void* /*handle*/) const {
return AudioProcessing::kUnspecifiedError;
}
} // namespace webrtc
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