gecko/dom/media/CanvasCaptureMediaStream.h
Nathan Froyd e4e2da55c9 Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout.  The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.

CLOSED TREE makes big refactorings like this a piece of cake.

 # The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
    xargs perl -p -i -e '
 s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
 s/nsRefPtr ?</RefPtr</g;   # handle declarations and variables
'

 # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h

 # Handle nsRefPtr.h itself, a couple places that define constructors
 # from nsRefPtr, and code generators specially.  We do this here, rather
 # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
 # things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
     mfbt/nsRefPtr.h \
     xpcom/glue/nsCOMPtr.h \
     xpcom/base/OwningNonNull.h \
     ipc/ipdl/ipdl/lower.py \
     ipc/ipdl/ipdl/builtin.py \
     dom/bindings/Codegen.py \
     python/lldbutils/lldbutils/utils.py

 # In our indiscriminate substitution above, we renamed
 # nsRefPtrGetterAddRefs, the class behind getter_AddRefs.  Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
    xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'

if [ -d .git ]; then
    git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
    hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi
2015-10-18 01:24:48 -04:00

132 lines
4.7 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 mozilla_dom_CanvasCaptureMediaStream_h_
#define mozilla_dom_CanvasCaptureMediaStream_h_
#include "DOMMediaStream.h"
#include "mozilla/dom/HTMLCanvasElement.h"
#include "StreamBuffer.h"
namespace mozilla {
class DOMMediaStream;
class MediaStreamListener;
class SourceMediaStream;
namespace layers {
class Image;
} // namespace layers
namespace dom {
class CanvasCaptureMediaStream;
class HTMLCanvasElement;
class OutputStreamFrameListener;
/*
* The CanvasCaptureMediaStream is a MediaStream subclass that provides a video
* track containing frames from a canvas. See an architectural overview below.
*
* ----------------------------------------------------------------------------
* === Main Thread === __________________________
* | |
* | CanvasCaptureMediaStream |
* |__________________________|
* |
* | RequestFrame()
* v
* ________________________
* ________ FrameCaptureRequested? | |
* | | ------------------------> | OutputStreamDriver |
* | Canvas | SetFrameCapture() | (FrameCaptureListener) |
* |________| ------------------------> |________________________|
* |
* | SetImage()
* v
* ___________________
* | StreamListener |
* ---------------------------------------| (All image access |----------------
* === MediaStreamGraph Thread === | Mutex Guarded) |
* |___________________|
* ^ |
* NotifyPull() | | AppendToTrack()
* | v
* ___________________________
* | |
* | MSG / SourceMediaStream |
* |___________________________|
* ----------------------------------------------------------------------------
*/
/*
* Base class for drivers of the output stream.
* It is up to each sub class to implement the NewFrame() callback of
* FrameCaptureListener.
*/
class OutputStreamDriver : public FrameCaptureListener
{
public:
OutputStreamDriver(SourceMediaStream* aSourceStream,
const TrackID& aTrackId);
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(OutputStreamDriver);
/*
* Sub classes can SetImage() to update the image being appended to the
* output stream. It will be appended on the next NotifyPull from MSG.
*/
void SetImage(const RefPtr<layers::Image>& aImage);
/*
* Makes sure any internal resources this driver is holding that may create
* reference cycles are released.
*/
virtual void Forget() {}
protected:
virtual ~OutputStreamDriver();
class StreamListener;
private:
RefPtr<SourceMediaStream> mSourceStream;
RefPtr<StreamListener> mStreamListener;
};
class CanvasCaptureMediaStream : public DOMMediaStream
{
public:
explicit CanvasCaptureMediaStream(HTMLCanvasElement* aCanvas);
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(CanvasCaptureMediaStream, DOMMediaStream)
nsresult Init(const dom::Optional<double>& aFPS, const TrackID& aTrackId);
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
// WebIDL
HTMLCanvasElement* Canvas() const { return mCanvas; }
void RequestFrame();
dom::FrameCaptureListener* FrameCaptureListener();
/**
* Create a CanvasCaptureMediaStream whose underlying stream is a SourceMediaStream.
*/
static already_AddRefed<CanvasCaptureMediaStream>
CreateSourceStream(nsIDOMWindow* aWindow,
HTMLCanvasElement* aCanvas);
protected:
~CanvasCaptureMediaStream();
private:
RefPtr<HTMLCanvasElement> mCanvas;
RefPtr<OutputStreamDriver> mOutputStreamDriver;
};
} // namespace dom
} // namespace mozilla
#endif /* mozilla_dom_CanvasCaptureMediaStream_h_ */