[Chromecast] Process streams with different post-processing.

chromecast/media/cma/pipeline/media_pipeline_impl.cc

Index: chromecast/media/cma/pipeline/media_pipeline_impl.cc
diff --git a/chromecast/media/cma/pipeline/media_pipeline_impl.cc b/chromecast/media/cma/pipeline/media_pipeline_impl.cc
index 14ced50a4d383c37ea7f16eac46266c695ab54b9..82ed1f98608c091391c1f4a364d404cfd0123541 100644
--- a/chromecast/media/cma/pipeline/media_pipeline_impl.cc
+++ b/chromecast/media/cma/pipeline/media_pipeline_impl.cc
@@ -32,19 +32,25 @@ namespace media {
 namespace {
 
 // Buffering parameters when load_type is kLoadTypeUrl.
-const base::TimeDelta kLowBufferThresholdURL(
+constexpr base::TimeDelta kLowBufferThresholdURL(
     base::TimeDelta::FromMilliseconds(2000));
-const base::TimeDelta kHighBufferThresholdURL(
+constexpr base::TimeDelta kHighBufferThresholdURL(
     base::TimeDelta::FromMilliseconds(6000));
 
 // Buffering parameters when load_type is kLoadTypeMediaSource.
-const base::TimeDelta kLowBufferThresholdMediaSource(
+constexpr base::TimeDelta kLowBufferThresholdMediaSource(
     base::TimeDelta::FromMilliseconds(0));
-const base::TimeDelta kHighBufferThresholdMediaSource(
+constexpr base::TimeDelta kHighBufferThresholdMediaSource(
     base::TimeDelta::FromMilliseconds(300));
 
+// Buffering parameters when load_type is kLoadTypeCommunication.
+constexpr base::TimeDelta kLowBufferThresholdCommunication(
+    base::TimeDelta::FromMilliseconds(0));
+constexpr base::TimeDelta kHighBufferThresholdCommunication(
+    base::TimeDelta::FromMilliseconds(20));
+
 // Interval between two updates of the media time.
-const base::TimeDelta kTimeUpdateInterval(
+constexpr base::TimeDelta kTimeUpdateInterval(
     base::TimeDelta::FromMilliseconds(250));
 
 // Interval between two updates of the statistics is equal to:
@@ -123,6 +129,9 @@ void MediaPipelineImpl::Initialize(
     if (load_type == kLoadTypeMediaSource) {
       low_threshold = kLowBufferThresholdMediaSource;
       high_threshold = kHighBufferThresholdMediaSource;
+    } else if (load_type == kLoadTypeCommunication) {
+      low_threshold = kLowBufferThresholdCommunication;
+      high_threshold = kHighBufferThresholdCommunication;
     }
     scoped_refptr<BufferingConfig> buffering_config(
         new BufferingConfig(low_threshold, high_threshold));