dom/media/webaudio/ConstantSourceNode.h
author Mike Hommey <mh+mozilla@glandium.org>
Fri, 11 Jan 2019 16:01:15 +0000
changeset 453570 daf50f25895db073e44d50fecf2e4f6fe873865d
parent 446960 0ceae9db9ec0be18daa1a279511ad305723185d4
permissions -rw-r--r--
Bug 1519307 - Add a new project to build useful parts of breakpad independently. r=froydnj With `ac_add_options --enable-project=tools/crashreporter` in a mozconfig, `./mach build` builds minidump_stackwalk, dump_syms and fileid. One caveat is that due to limitation in how the build system works currently, it's cumbersome to keep dump_syms as a host program for Gecko, and to make it a target program for this project. For now, keep it as a host program. We're not going to use it on automation, but it's still convenient to have for quick local builds (I've had to resort to awful hacks downstream). Differential Revision: https://phabricator.services.mozilla.com/D16299

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef ConstantSourceNode_h_
#define ConstantSourceNode_h_

#include "AudioScheduledSourceNode.h"
#include "AudioParam.h"
#include "mozilla/dom/ConstantSourceNodeBinding.h"

namespace mozilla {
namespace dom {

class AudioContext;

class ConstantSourceNode final : public AudioScheduledSourceNode,
                                 public MainThreadMediaStreamListener {
 public:
  explicit ConstantSourceNode(AudioContext* aContext);

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ConstantSourceNode,
                                           AudioScheduledSourceNode)

  JSObject* WrapObject(JSContext* aCx,
                       JS::Handle<JSObject*> aGivenProto) override;

  static already_AddRefed<ConstantSourceNode> Constructor(
      const GlobalObject& aGlobal, AudioContext& aContext,
      const ConstantSourceOptions& aOptions, ErrorResult& aRv);

  void DestroyMediaStream() override;

  uint16_t NumberOfInputs() const final { return 0; }

  AudioParam* Offset() const { return mOffset; }

  void Start(double aWhen, ErrorResult& rv) override;
  void Stop(double aWhen, ErrorResult& rv) override;

  void NotifyMainThreadStreamFinished() override;

  const char* NodeType() const override { return "ConstantSourceNode"; }

  size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;

 protected:
  virtual ~ConstantSourceNode();

 private:
  RefPtr<AudioParam> mOffset;
  bool mStartCalled;
};

}  // namespace dom
}  // namespace mozilla

#endif