[Chromecast] Complete PostProcessingPipeline changes

chromecast/media/cma/backend/alsa/stream_mixer_alsa.h

Index: chromecast/media/cma/backend/alsa/stream_mixer_alsa.h
diff --git a/chromecast/media/cma/backend/alsa/stream_mixer_alsa.h b/chromecast/media/cma/backend/alsa/stream_mixer_alsa.h
index b5a2f9b8bb0bd34943dc78d222006a86b53874ec..628d34c8eb2e4985d1725680b22c65545d137dee 100644
--- a/chromecast/media/cma/backend/alsa/stream_mixer_alsa.h
+++ b/chromecast/media/cma/backend/alsa/stream_mixer_alsa.h
@@ -30,6 +30,7 @@ namespace chromecast {
 namespace media {
 class AlsaWrapper;
 class FilterGroup;
+class PostProcessingPipelineParser;
 
 // Mixer implementation. The mixer has one or more input queues; these can be
 // added/removed at any time. When an input source pushes frames to an input
@@ -175,8 +176,8 @@ class StreamMixerAlsa {
   // mixer thread.
   void OnFramesQueued();
 
+  void ResetPostProcessorsForTest(const std::string& pipeline_json);
   void SetAlsaWrapperForTest(std::unique_ptr<AlsaWrapper> alsa_wrapper);
-  void DisablePostProcessingForTest();
   void WriteFramesForTest();  // Can be called on any thread.
   void ClearInputsForTest();  // Removes all inputs.
 
@@ -213,6 +214,8 @@ class StreamMixerAlsa {
   void FinalizeOnMixerThread();
   void FinishFinalize();
 
+  void CreatePostProcessors(PostProcessingPipelineParser* pipeline_parser,
+                            bool is_test = false);
   // Reads the buffer size, period size, start threshold, and avail min value
   // from the provided command line flags or uses default values if no flags are
   // provided.
@@ -242,7 +245,7 @@ class StreamMixerAlsa {
 
   void WriteFrames();
   bool TryWriteFrames();
-  void WriteMixedPcm(std::vector<uint8_t>* interleaved, int frames);
+  void WriteMixedPcm(int frames);
   void UpdateRenderingDelay(int newly_pushed_frames);
   size_t InterleavedSize(int frames);
   ssize_t BytesPerOutputFormatSample();
@@ -275,7 +278,7 @@ class StreamMixerAlsa {
 
   std::vector<std::unique_ptr<InputQueue>> inputs_;
   std::vector<std::unique_ptr<InputQueue>> ignored_inputs_;
-  MediaPipelineBackendAlsa::RenderingDelay rendering_delay_;
+  MediaPipelineBackendAlsa::RenderingDelay alsa_rendering_delay_;
 
   std::unique_ptr<base::Timer> retry_write_frames_timer_;
 
@@ -283,6 +286,11 @@ class StreamMixerAlsa {
   std::unique_ptr<base::Timer> check_close_timer_;
 
   std::vector<std::unique_ptr<FilterGroup>> filter_groups_;
+  FilterGroup* default_filter_;
+  FilterGroup* mix_filter_;
+  FilterGroup* linearize_filter_;
+  std::vector<uint8_t> interleaved_;
+
   std::vector<CastMediaShlib::LoopbackAudioObserver*> loopback_observers_;
 
   std::map<AudioContentType, VolumeInfo> volume_info_;