Add muted_output parameter to ACM

webrtc/modules/audio_coding/acm2/audio_coding_module_impl.cc

Index: webrtc/modules/audio_coding/acm2/audio_coding_module_impl.cc
diff --git a/webrtc/modules/audio_coding/acm2/audio_coding_module_impl.cc b/webrtc/modules/audio_coding/acm2/audio_coding_module_impl.cc
index 1a1ae37a8a38da869caa30fc78539ccb49c11028..4aae5880b49e8e753e3399cfc3749135693cfefe 100644
--- a/webrtc/modules/audio_coding/acm2/audio_coding_module_impl.cc
+++ b/webrtc/modules/audio_coding/acm2/audio_coding_module_impl.cc
@@ -791,9 +791,10 @@ int AudioCodingModuleImpl::SetMaximumPlayoutDelay(int time_ms) {
 // Get 10 milliseconds of raw audio data to play out.
 // Automatic resample to the requested frequency.
 int AudioCodingModuleImpl::PlayoutData10Ms(int desired_freq_hz,
-                                           AudioFrame* audio_frame) {
+                                           AudioFrame* audio_frame,
+                                           bool* muted) {
   // GetAudio always returns 10 ms, at the requested sample rate.
-  if (receiver_.GetAudio(desired_freq_hz, audio_frame) != 0) {
+  if (receiver_.GetAudio(desired_freq_hz, audio_frame, muted) != 0) {
     WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, id_,
                  "PlayoutData failed, RecOut Failed");
     return -1;
@@ -802,6 +803,14 @@ int AudioCodingModuleImpl::PlayoutData10Ms(int desired_freq_hz,
   return 0;
 }
 
+int AudioCodingModuleImpl::PlayoutData10Ms(int desired_freq_hz,
+                                           AudioFrame* audio_frame) {
+  bool muted;
+  int ret = PlayoutData10Ms(desired_freq_hz, audio_frame, &muted);
+  RTC_DCHECK(!muted);

[minyue-webrtc, 2016/05/13 09:43:12]

Is it possible to check enable_fast_accelerate of neteq, at the beginning of
call, instead. If not straightforward (and this func is gonna be remove anyway),
add a comment to help reading.

[hlundin-webrtc, 2016/05/13 09:45:52]

The config is not stored anywhere, so it is not straightforward. Leaving this as
is.

+  return ret;
+}
+
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 //   Statistics
 //