Index: chromecast/media/cma/backend/alsa/post_processing_pipeline_parser.cc |
diff --git a/chromecast/media/cma/backend/alsa/post_processing_pipeline_parser.cc b/chromecast/media/cma/backend/alsa/post_processing_pipeline_parser.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..6e208bdc261135161ec6077d7c6773f6817918e1 |
--- /dev/null |
+++ b/chromecast/media/cma/backend/alsa/post_processing_pipeline_parser.cc |
@@ -0,0 +1,86 @@ |
+// 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. |
+ |
+#include "chromecast/media/cma/backend/alsa/post_processing_pipeline_parser.h" |
+ |
+#include "base/files/file_path.h" |
+#include "base/files/file_util.h" |
+#include "base/logging.h" |
+#include "chromecast/base/serializers.h" |
+#include "chromecast/media/base/audio_device_ids.h" |
+#include "media/audio/audio_device_description.h" |
+ |
+namespace chromecast { |
+namespace media { |
+ |
+namespace { |
+ |
+const base::FilePath::CharType kPostProcessingPipelineFilePath[] = |
+ FILE_PATH_LITERAL("/etc/cast_audio.json"); |
+ |
+const char kCommunicationPipelineKey[] = "communication"; |
+const char kAlarmPipelineKey[] = "alarm"; |
+const char kTtsPipelineKey[] = "tts"; |
+const char kMediaPipelineKey[] = "media"; |
+ |
+// TODO(bshaya): Use AudioContentType instead. |
+std::string GetPipelineKey(const std::string& device_id) { |
+ if (device_id == ::media::AudioDeviceDescription::kCommunicationsDeviceId) { |
+ return kCommunicationPipelineKey; |
+ } |
+ if (device_id == kAlarmAudioDeviceId) { |
+ return kAlarmPipelineKey; |
+ } |
+ if (device_id == kTtsAudioDeviceId) { |
+ return kTtsPipelineKey; |
+ } |
+ if (device_id == ::media::AudioDeviceDescription::kDefaultDeviceId) { |
+ return kMediaPipelineKey; |
+ } |
+ NOTREACHED() << "Invalid device_id: " << device_id; |
+ return ""; |
+} |
+ |
+} // namespace |
+ |
+PostProcessingPipelineParser::PostProcessingPipelineParser() = default; |
+PostProcessingPipelineParser::~PostProcessingPipelineParser() = default; |
+ |
+void PostProcessingPipelineParser::Initialize() { |
+ if (!base::PathExists(base::FilePath(kPostProcessingPipelineFilePath))) { |
+ LOG(WARNING) << "No post-processing config found in " |
+ << kPostProcessingPipelineFilePath << "."; |
+ return; |
+ } |
+ |
+ cast_audio_config_data_ = |
+ DeserializeJsonFromFile(base::FilePath(kPostProcessingPipelineFilePath)); |
+ base::DictionaryValue* audio_cfg_dict; |
+ CHECK(cast_audio_config_data_->GetAsDictionary(&audio_cfg_dict)) |
+ << "JSON formatting error in " << kPostProcessingPipelineFilePath; |
+ |
+ CHECK(audio_cfg_dict->GetDictionary("post_processing", &pipeline_dict_)) |
+ << "No \"post_processing\" object found in " |
+ << kPostProcessingPipelineFilePath; |
+} |
+ |
+base::ListValue* PostProcessingPipelineParser::GetPipelineByDeviceId( |
+ const std::string& device_id) { |
+ if (!pipeline_dict_) { |
+ return nullptr; |
+ } |
+ |
+ base::ListValue* out_list; |
+ std::string key = GetPipelineKey(device_id); |
+ if (!pipeline_dict_->GetList(key, &out_list)) { |
+ LOG(WARNING) << "No post-processor description found for \"" << key |
+ << "\" in " << kPostProcessingPipelineFilePath |
+ << ". Using passthrough."; |
+ return nullptr; |
+ } |
+ return out_list; |
+} |
+ |
+} // namepsace media |
+} // namespace chromecast |