text: // 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 THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_CROSS_THREAD_AUDIO_WORKLET_PROCESSOR_INFO_H_
  #define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_CROSS_THREAD_AUDIO_WORKLET_PROCESSOR_INFO_H_
  
  #include "third_party/blink/renderer/bindings/modules/v8/v8_audio_param_descriptor.h"
  #include "third_party/blink/renderer/modules/webaudio/audio_worklet_processor_definition.h"
  
  namespace blink {
  
  // A class for shallow repackage of |AudioParamDescriptor|. This is created only
  // when requested when the synchronization between AudioWorkletMessagingProxy
  // and AudioWorkletGlobalScope.
  class CrossThreadAudioParamInfo {
    DISALLOW_NEW();
  
   public:
    explicit CrossThreadAudioParamInfo(const AudioParamDescriptor* descriptor)
        : automation_rate_(descriptor->automationRate().IsolatedCopy()),
          default_value_(descriptor->defaultValue()),
          max_value_(descriptor->maxValue()),
          min_value_(descriptor->minValue()),
          name_(descriptor->name().IsolatedCopy()) {}
  
    const String& AutomationRate() const { return automation_rate_; }
    float DefaultValue() const { return default_value_; }
    float MaxValue() const { return max_value_; }
    float MinValue() const { return min_value_; }
    const String& Name() const { return name_; }
  
   private:
    const String automation_rate_;
    const float default_value_;
    const float max_value_;
    const float min_value_;
    const String name_;
  };
  
  // A class for shallow repackage of |AudioWorkletProcessorDefinition|. This is
  // created only when requested when the synchronization between
  // AudioWorkletMessagingProxy and AudioWorkletGlobalScope.
  class CrossThreadAudioWorkletProcessorInfo {
    DISALLOW_NEW();
  
   public:
    explicit CrossThreadAudioWorkletProcessorInfo(
        const AudioWorkletProcessorDefinition& definition)
        : name_(definition.GetName().IsolatedCopy()) {
      // To avoid unnecessary reallocations of the vector.
      param_info_list_.ReserveInitialCapacity(
          definition.GetAudioParamDescriptorNames().size());
  
      for (const String& name : definition.GetAudioParamDescriptorNames()) {
        param_info_list_.emplace_back(
            definition.GetAudioParamDescriptor(name));
      }
    }
  
    const String& Name() const { return name_; }
    Vector<CrossThreadAudioParamInfo> ParamInfoList() { return param_info_list_; }
  
   private:
    const String name_;
    Vector<CrossThreadAudioParamInfo> param_info_list_;
  };
  
  }  // namespace blink
  
  #endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_CROSS_THREAD_AUDIO_WORKLET_PROCESSOR_INFO_H_
  