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/*
* Copyright (c) 2011 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 "level_estimator_impl.h"
#include <cassert>
#include <cstring>
#include "critical_section_wrapper.h"
#include "audio_processing_impl.h"
#include "audio_buffer.h"
// TODO(ajm): implement the underlying level estimator component.
namespace webrtc {
typedef void Handle;
namespace {
/*int EstimateLevel(AudioBuffer* audio, Handle* my_handle) {
assert(audio->samples_per_split_channel() <= 160);
WebRtc_Word16* mixed_data = audio->low_pass_split_data(0);
if (audio->num_channels() > 1) {
audio->CopyAndMixLowPass(1);
mixed_data = audio->mixed_low_pass_data(0);
}
int err = UpdateLvlEst(my_handle,
mixed_data,
audio->samples_per_split_channel());
if (err != AudioProcessing::kNoError) {
return GetHandleError(my_handle);
}
return AudioProcessing::kNoError;
}
int GetMetricsLocal(Handle* my_handle, LevelEstimator::Metrics* metrics) {
level_t levels;
memset(&levels, 0, sizeof(levels));
int err = ExportLevels(my_handle, &levels, 2);
if (err != AudioProcessing::kNoError) {
return err;
}
metrics->signal.instant = levels.instant;
metrics->signal.average = levels.average;
metrics->signal.maximum = levels.max;
metrics->signal.minimum = levels.min;
err = ExportLevels(my_handle, &levels, 1);
if (err != AudioProcessing::kNoError) {
return err;
}
metrics->speech.instant = levels.instant;
metrics->speech.average = levels.average;
metrics->speech.maximum = levels.max;
metrics->speech.minimum = levels.min;
err = ExportLevels(my_handle, &levels, 0);
if (err != AudioProcessing::kNoError) {
return err;
}
metrics->noise.instant = levels.instant;
metrics->noise.average = levels.average;
metrics->noise.maximum = levels.max;
metrics->noise.minimum = levels.min;
return AudioProcessing::kNoError;
}*/
} // namespace
LevelEstimatorImpl::LevelEstimatorImpl(const AudioProcessingImpl* apm)
: ProcessingComponent(apm),
apm_(apm) {}
LevelEstimatorImpl::~LevelEstimatorImpl() {}
int LevelEstimatorImpl::AnalyzeReverseStream(AudioBuffer* /*audio*/) {
return apm_->kUnsupportedComponentError;
/*if (!is_component_enabled()) {
return apm_->kNoError;
}
return EstimateLevel(audio, static_cast<Handle*>(handle(1)));*/
}
int LevelEstimatorImpl::ProcessCaptureAudio(AudioBuffer* /*audio*/) {
return apm_->kUnsupportedComponentError;
/*if (!is_component_enabled()) {
return apm_->kNoError;
}
return EstimateLevel(audio, static_cast<Handle*>(handle(0)));*/
}
int LevelEstimatorImpl::Enable(bool /*enable*/) {
CriticalSectionScoped crit_scoped(*apm_->crit());
return apm_->kUnsupportedComponentError;
//return EnableComponent(enable);
}
bool LevelEstimatorImpl::is_enabled() const {
return is_component_enabled();
}
int LevelEstimatorImpl::GetMetrics(LevelEstimator::Metrics* /*metrics*/,
LevelEstimator::Metrics* /*reverse_metrics*/) {
return apm_->kUnsupportedComponentError;
/*if (!is_component_enabled()) {
return apm_->kNotEnabledError;
}
int err = GetMetricsLocal(static_cast<Handle*>(handle(0)), metrics);
if (err != apm_->kNoError) {
return err;
}
err = GetMetricsLocal(static_cast<Handle*>(handle(1)), reverse_metrics);
if (err != apm_->kNoError) {
return err;
}
return apm_->kNoError;*/
}
int LevelEstimatorImpl::get_version(char* version,
int version_len_bytes) const {
// An empty string is used to indicate no version information.
memset(version, 0, version_len_bytes);
return apm_->kNoError;
}
void* LevelEstimatorImpl::CreateHandle() const {
Handle* handle = NULL;
/*if (CreateLvlEst(&handle) != apm_->kNoError) {
handle = NULL;
} else {
assert(handle != NULL);
}*/
return handle;
}
int LevelEstimatorImpl::DestroyHandle(void* /*handle*/) const {
return apm_->kUnsupportedComponentError;
//return FreeLvlEst(static_cast<Handle*>(handle));
}
int LevelEstimatorImpl::InitializeHandle(void* /*handle*/) const {
return apm_->kUnsupportedComponentError;
/*const double kIntervalSeconds = 1.5;
return InitLvlEst(static_cast<Handle*>(handle),
apm_->sample_rate_hz(),
kIntervalSeconds);*/
}
int LevelEstimatorImpl::ConfigureHandle(void* /*handle*/) const {
return apm_->kUnsupportedComponentError;
//return apm_->kNoError;
}
int LevelEstimatorImpl::num_handles_required() const {
return apm_->kUnsupportedComponentError;
//return 2;
}
int LevelEstimatorImpl::GetHandleError(void* handle) const {
// The component has no detailed errors.
assert(handle != NULL);
return apm_->kUnspecifiedError;
}
} // namespace webrtc
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