tor-browser

The Tor Browser
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ChannelMergerNode.h (2135B)

      1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef ChannelMergerNode_h_
      8 #define ChannelMergerNode_h_
      9 
     10 #include "AudioNode.h"
     11 
     12 namespace mozilla::dom {
     13 
     14 class AudioContext;
     15 struct ChannelMergerOptions;
     16 
     17 class ChannelMergerNode final : public AudioNode {
     18 public:
     19  static already_AddRefed<ChannelMergerNode> Create(
     20      AudioContext& aAudioContext, const ChannelMergerOptions& aOptions,
     21      ErrorResult& aRv);
     22 
     23  NS_INLINE_DECL_REFCOUNTING_INHERITED(ChannelMergerNode, AudioNode)
     24 
     25  static already_AddRefed<ChannelMergerNode> Constructor(
     26      const GlobalObject& aGlobal, AudioContext& aAudioContext,
     27      const ChannelMergerOptions& aOptions, ErrorResult& aRv) {
     28    return Create(aAudioContext, aOptions, aRv);
     29  }
     30 
     31  JSObject* WrapObject(JSContext* aCx,
     32                       JS::Handle<JSObject*> aGivenProto) override;
     33 
     34  uint16_t NumberOfInputs() const override { return mInputCount; }
     35 
     36  const char* NodeType() const override { return "ChannelMergerNode"; }
     37 
     38  virtual void SetChannelCount(uint32_t aChannelCount,
     39                               ErrorResult& aRv) override {
     40    if (aChannelCount != 1) {
     41      aRv.ThrowInvalidStateError(
     42          "Cannot change channel count of ChannelMergerNode");
     43    }
     44  }
     45 
     46  virtual void SetChannelCountModeValue(ChannelCountMode aMode,
     47                                        ErrorResult& aRv) override {
     48    if (aMode != ChannelCountMode::Explicit) {
     49      aRv.ThrowInvalidStateError(
     50          "Cannot change channel count mode of ChannelMergerNode");
     51    }
     52  }
     53 
     54  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override {
     55    return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
     56  }
     57 
     58 private:
     59  ChannelMergerNode(AudioContext* aContext, uint16_t aInputCount);
     60  ~ChannelMergerNode() = default;
     61 
     62  const uint16_t mInputCount;
     63 };
     64 
     65 }  // namespace mozilla::dom
     66 
     67 #endif