APM: fix level estimator null pointer bug
When APM is used without calling `ApplyConfig()` and the level
estimator sub-module, which is disabled by default (see [1]), is used,
APM crashes because the enabled config flag is true, but the unique
pointer object is unset.
[1] https://source.chromium.org/chromium/chromium/src/+/main:third_party/webrtc/modules/audio_processing/include/audio_processing.h;l=391?q=include%2Faudio_processing.h
Bug: webrtc:7494
Change-Id: I482a9aa4f6a0a56793769674aba7b2661330bb14
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/235375
Reviewed-by: Per Ã…hgren <peah@webrtc.org>
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35230}
diff --git a/modules/audio_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index ee9f5c7..d85ec62 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -418,6 +418,7 @@
InitializePostProcessor();
InitializePreProcessor();
InitializeCaptureLevelsAdjuster();
+ InitializeLevelEstimator();
if (aec_dump_) {
aec_dump_->WriteInitMessage(formats_.api_format, rtc::TimeUTCMillis());
@@ -595,9 +596,7 @@
InitializeCaptureLevelsAdjuster();
}
- if (config_.level_estimation.enabled && !submodules_.output_level_estimator) {
- submodules_.output_level_estimator = std::make_unique<LevelEstimator>();
- }
+ InitializeLevelEstimator();
if (voice_detection_config_changed) {
InitializeVoiceDetector();
@@ -1333,8 +1332,8 @@
submodules_.capture_post_processor->Process(capture_buffer);
}
- // The level estimator operates on the recombined data.
- if (config_.level_estimation.enabled) {
+ if (submodules_.output_level_estimator) {
+ // The level estimator operates on the recombined data.
submodules_.output_level_estimator->ProcessStream(*capture_buffer);
capture_.stats.output_rms_dbfs =
submodules_.output_level_estimator->RMS();
@@ -2015,6 +2014,16 @@
}
}
+void AudioProcessingImpl::InitializeLevelEstimator() {
+ if (!config_.level_estimation.enabled) {
+ submodules_.output_level_estimator.reset();
+ return;
+ }
+ if (!submodules_.output_level_estimator) {
+ submodules_.output_level_estimator = std::make_unique<LevelEstimator>();
+ }
+}
+
void AudioProcessingImpl::InitializePostProcessor() {
if (submodules_.capture_post_processor) {
submodules_.capture_post_processor->Initialize(
diff --git a/modules/audio_processing/audio_processing_impl.h b/modules/audio_processing/audio_processing_impl.h
index 89f5d63..6b19b4d 100644
--- a/modules/audio_processing/audio_processing_impl.h
+++ b/modules/audio_processing/audio_processing_impl.h
@@ -284,6 +284,7 @@
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_capture_);
void InitializePostProcessor() RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_capture_);
void InitializeAnalyzer() RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_capture_);
+ void InitializeLevelEstimator() RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_capture_);
// Initializations of render-only submodules, requiring the render lock
// already acquired.