Index: chromecast/media/cma/backend/alsa/post_processors/governor.cc |
diff --git a/chromecast/media/cma/backend/alsa/post_processors/governor_shlib.cc b/chromecast/media/cma/backend/alsa/post_processors/governor.cc |
similarity index 60% |
rename from chromecast/media/cma/backend/alsa/post_processors/governor_shlib.cc |
rename to chromecast/media/cma/backend/alsa/post_processors/governor.cc |
index e4af055ab791498943dbea720d6a73d93ecbd6ee..19ab8c784ad072c4cb822eb73df1a1086e59406c 100644 |
--- a/chromecast/media/cma/backend/alsa/post_processors/governor_shlib.cc |
+++ b/chromecast/media/cma/backend/alsa/post_processors/governor.cc |
@@ -2,21 +2,22 @@ |
// Use of this source code is governed by a BSD-style license that can be |
// found in the LICENSE file. |
+#include "chromecast/media/cma/backend/alsa/post_processors/governor.h" |
+ |
#include <memory> |
#include <string> |
#include "base/logging.h" |
-#include "base/macros.h" |
#include "base/values.h" |
#include "chromecast/base/serializers.h" |
#include "chromecast/media/cma/backend/alsa/slew_volume.h" |
-#include "chromecast/public/media/audio_post_processor_shlib.h" |
namespace chromecast { |
namespace media { |
namespace { |
const int kNoSampleRate = -1; |
+const int kNoVolume = -1; |
// Configuration strings: |
const char kOnsetVolumeKey[] = "onset_volume"; |
@@ -24,44 +25,17 @@ const char kClampMultiplierKey[] = "clamp_multiplier"; |
} // namespace |
-// Provides a flat reduction in output volume if the input volume is above a |
-// given threshold. |
-// Used to protect speakers at high output levels |
-// while providing dyanmic range at low output level. |
-// The configuration string for this plugin is: |
-// {"onset_volume": |VOLUME_TO_CLAMP|, "clamp_multiplier": |CLAMP_MULTIPLIER|} |
-// Input volumes > |VOLUME_TO_CLAMP| will be attenuated by |CLAMP_MULTIPLIER|. |
-class Governor : public AudioPostProcessor { |
- public: |
- Governor(const std::string& config, int channels); |
- ~Governor() override; |
- |
- bool SetSampleRate(int sample_rate) override; |
- int ProcessFrames(const std::vector<float*>& data, |
- int frames, |
- float volume) override; |
- int GetRingingTimeInFrames() override; |
- |
- private: |
- float GetGovernorMultiplier(); |
- |
- int channels_; |
- int sample_rate_; |
- float volume_; |
- double onset_volume_; |
- double clamp_multiplier_; |
- SlewVolume governor_; |
- DISALLOW_COPY_AND_ASSIGN(Governor); |
-}; |
- |
Governor::Governor(const std::string& config, int channels) |
- : channels_(channels), sample_rate_(kNoSampleRate), volume_(1.0) { |
+ : channels_(channels), |
+ sample_rate_(kNoSampleRate), |
+ volume_(kNoVolume), |
+ slew_volume_() { |
auto config_dict = base::DictionaryValue::From(DeserializeFromJson(config)); |
CHECK(config_dict) << "Governor config is not valid json: " << config; |
CHECK(config_dict->GetDouble(kOnsetVolumeKey, &onset_volume_)); |
CHECK(config_dict->GetDouble(kClampMultiplierKey, &clamp_multiplier_)); |
DCHECK_EQ(channels_, 2); |
- governor_.SetVolume(1.0); |
+ slew_volume_.SetVolume(1.0); |
LOG(INFO) << "Created a governor: onset_volume = " << onset_volume_ |
<< ", clamp_multiplier = " << clamp_multiplier_; |
} |
@@ -70,7 +44,7 @@ Governor::~Governor() = default; |
bool Governor::SetSampleRate(int sample_rate) { |
sample_rate_ = sample_rate; |
- governor_.SetSampleRate(sample_rate); |
+ slew_volume_.SetSampleRate(sample_rate); |
return true; |
} |
@@ -81,13 +55,13 @@ int Governor::ProcessFrames(const std::vector<float*>& data, |
if (volume != volume_) { |
volume_ = volume; |
- governor_.SetVolume(GetGovernorMultiplier()); |
+ slew_volume_.SetVolume(GetGovernorMultiplier()); |
} |
for (int c = 0; c < channels_; ++c) { |
DCHECK(data[c]); |
- governor_.ProcessFMAC(c != 0 /* repeat_transition */, data[c], frames, |
- data[c]); |
+ slew_volume_.ProcessFMUL(c != 0 /* repeat_transition */, data[c], frames, |
+ data[c]); |
} |
return 0; // No delay in this pipeline. |
@@ -104,6 +78,10 @@ float Governor::GetGovernorMultiplier() { |
return 1.0; |
} |
+void Governor::SetSlewTimeMsForTest(int slew_time_ms) { |
+ slew_volume_.SetMaxSlewTimeMs(slew_time_ms); |
+} |
+ |
} // namespace media |
} // namespace chromecast |