Index: chromecast/media/cma/backend/alsa/post_processing_pipeline.h |
diff --git a/chromecast/media/cma/backend/alsa/post_processing_pipeline.h b/chromecast/media/cma/backend/alsa/post_processing_pipeline.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..773a6b55581d0e0a1b4d217fe2b347a8b5e42c6f |
--- /dev/null |
+++ b/chromecast/media/cma/backend/alsa/post_processing_pipeline.h |
@@ -0,0 +1,60 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CHROMECAST_MEDIA_CMA_BACKEND_ALSA_POST_PROCESSING_PIPELINE_H_ |
+#define CHROMECAST_MEDIA_CMA_BACKEND_ALSA_POST_PROCESSING_PIPELINE_H_ |
+ |
+#include <cstdint> |
+#include <memory> |
+#include <string> |
+#include <vector> |
+ |
+#include "base/macros.h" |
+ |
+namespace base { |
+class ListValue; |
+class ScopedNativeLibrary; |
+} // namespace base |
+ |
+namespace chromecast { |
+namespace media { |
+ |
+class AudioPostProcessor; |
+ |
+// Creates and contains multiple AudioPostProcessors, as specified in ctor. |
+// Provides convenience methods to access and use the AudioPostProcessors. |
+class PostProcessingPipeline { |
+ public: |
+ PostProcessingPipeline(const base::ListValue* filter_description_list, |
+ int channels); |
+ ~PostProcessingPipeline(); |
+ |
+ // TODO(bshaya): Switch to float* |
+ int ProcessFrames(uint8_t* data, |
+ int num_frames, |
+ float current_volume, |
+ bool is_silence); |
+ bool SetSampleRate(int sample_rate); |
+ bool IsRinging(); |
+ |
+ private: |
+ int GetRingingTimeInFrames(); |
+ |
+ int sample_rate_; |
+ int ringing_time_in_frames_ = 0; |
+ int silence_frames_processed_ = 0; |
+ int total_delay_frames_ = 0; |
+ std::vector<std::unique_ptr<AudioPostProcessor>> processors_; |
+ |
+ // Contains all libraries in use; |
+ // Functions in shared objects cannot be used once library is closed. |
+ std::vector<std::unique_ptr<base::ScopedNativeLibrary>> libraries_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(PostProcessingPipeline); |
+}; |
+ |
+} // namespace media |
+} // namespace chromecast |
+ |
+#endif // CHROMECAST_MEDIA_CMA_BACKEND_ALSA_POST_PROCESSING_PIPELINE_H_ |