mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 12:37:37 +00:00
86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
|
|
/* 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 NSDOMMEDIASTREAM_H_
|
|
#define NSDOMMEDIASTREAM_H_
|
|
|
|
#include "nsIDOMMediaStream.h"
|
|
#include "MediaStreamGraph.h"
|
|
#include "nsCycleCollectionParticipant.h"
|
|
#include "nsIPrincipal.h"
|
|
|
|
// GetCurrentTime is defined in winbase.h as zero argument macro forwarding to
|
|
// GetTickCount() and conflicts with NS_DECL_NSIDOMMEDIASTREAM, containing
|
|
// currentTime getter.
|
|
#ifdef GetCurrentTime
|
|
#undef GetCurrentTime
|
|
#endif
|
|
|
|
/**
|
|
* DOM wrapper for MediaStreams.
|
|
*/
|
|
class nsDOMMediaStream : public nsIDOMMediaStream
|
|
{
|
|
typedef mozilla::MediaStream MediaStream;
|
|
|
|
public:
|
|
nsDOMMediaStream() : mStream(nullptr), mHintContents(0) {}
|
|
virtual ~nsDOMMediaStream();
|
|
|
|
NS_DECL_CYCLE_COLLECTION_CLASS(nsDOMMediaStream)
|
|
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
|
|
|
|
NS_DECL_NSIDOMMEDIASTREAM
|
|
|
|
MediaStream* GetStream() { return mStream; }
|
|
bool IsFinished() { return !mStream || mStream->IsFinished(); }
|
|
/**
|
|
* Returns a principal indicating who may access this stream. The stream contents
|
|
* can only be accessed by principals subsuming this principal.
|
|
*/
|
|
nsIPrincipal* GetPrincipal() { return mPrincipal; }
|
|
|
|
/**
|
|
* Indicate that data will be contributed to this stream from origin aPrincipal.
|
|
* If aPrincipal is null, this is ignored. Otherwise, from now on the contents
|
|
* of this stream can only be accessed by principals that subsume aPrincipal.
|
|
* Returns true if the stream's principal changed.
|
|
*/
|
|
bool CombineWithPrincipal(nsIPrincipal* aPrincipal);
|
|
|
|
/**
|
|
* Create an nsDOMMediaStream whose underlying stream is a SourceMediaStream.
|
|
*/
|
|
static already_AddRefed<nsDOMMediaStream> CreateInputStream(uint32_t aHintContents);
|
|
|
|
// Hints to tell the SDP generator about whether this
|
|
// MediaStream probably has audio and/or video
|
|
enum {
|
|
HINT_CONTENTS_AUDIO = 0x00000001U,
|
|
HINT_CONTENTS_VIDEO = 0x00000002U
|
|
};
|
|
uint32_t GetHintContents() const { return mHintContents; }
|
|
void SetHintContents(uint32_t aHintContents) { mHintContents = aHintContents; }
|
|
|
|
/**
|
|
* Create an nsDOMMediaStream whose underlying stream is a TrackUnionStream.
|
|
*/
|
|
static already_AddRefed<nsDOMMediaStream> CreateTrackUnionStream();
|
|
|
|
protected:
|
|
// MediaStream is owned by the graph, but we tell it when to die, and it won't
|
|
// die until we let it.
|
|
MediaStream* mStream;
|
|
// Principal identifying who may access the contents of this stream.
|
|
// If null, this stream can be used by anyone because it has no content yet.
|
|
nsCOMPtr<nsIPrincipal> mPrincipal;
|
|
|
|
// tells the SDP generator about whether this
|
|
// MediaStream probably has audio and/or video
|
|
uint32_t mHintContents;
|
|
};
|
|
|
|
#endif /* NSDOMMEDIASTREAM_H_ */
|