Major AEC3 render pipeline changes

webrtc/modules/audio_processing/audio_processing_impl.cc

Index: webrtc/modules/audio_processing/audio_processing_impl.cc
diff --git a/webrtc/modules/audio_processing/audio_processing_impl.cc b/webrtc/modules/audio_processing/audio_processing_impl.cc
index 1f73c5984a68af29d7dd941a64f88a834fd9e72a..4216cf9c9d108946fcfa31d3f51cb21c01d733ca 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.cc
+++ b/webrtc/modules/audio_processing/audio_processing_impl.cc
@@ -569,7 +569,8 @@ int AudioProcessingImpl::InitializeLocked(const ProcessingConfig& config) {
           submodule_states_.RenderMultiBandSubModulesActive());
   // TODO(aluebs): Remove this restriction once we figure out why the 3-band
   // splitting filter degrades the AEC performance.
-  if (render_processing_rate > kSampleRate32kHz) {
+  if (render_processing_rate > kSampleRate32kHz &&
+      !config_.echo_canceller3.enabled) {

[peah-webrtc, 2017/03/30 05:36:57]

This change causes the splitting filter to always be used when AEC3 is active
(and the sample rate is higher than 8 kHz).

     render_processing_rate = submodule_states_.RenderMultiBandProcessingActive()
                                  ? kSampleRate32kHz
                                  : kSampleRate16kHz;
@@ -1440,9 +1441,7 @@ int AudioProcessingImpl::ProcessRenderStreamLocked() {
   QueueRenderAudio(render_buffer);
   // TODO(peah): Perform the queueing ínside QueueRenderAudiuo().
   if (private_submodules_->echo_canceller3) {
-    if (!private_submodules_->echo_canceller3->AnalyzeRender(render_buffer)) {
-      // TODO(peah): Lock and empty render queue, and try again.
-    }
+    private_submodules_->echo_canceller3->AnalyzeRender(render_buffer);
   }
 
   if (submodule_states_.RenderMultiBandProcessingActive() &&