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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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_layers_CompositionRecorder_h
#define mozilla_layers_CompositionRecorder_h
#include "mozilla/RefPtr.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/layers/PCompositorBridgeTypes.h"
#include "nsISupportsImpl.h"
#include "nsTArray.h"
#include "nsString.h"
namespace mozilla {
namespace gfx {
class DataSourceSurface;
}
namespace layers {
/**
* A captured frame from a |LayerManager|.
*/
class RecordedFrame {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(RecordedFrame)
// The resulting DataSourceSurface must not be kept alive beyond the lifetime
// of the RecordedFrame object, since it may refer to data owned by the frame.
virtual already_AddRefed<gfx::DataSourceSurface> GetSourceSurface() = 0;
TimeStamp GetTimeStamp() { return mTimeStamp; }
protected:
virtual ~RecordedFrame() = default;
RecordedFrame(const TimeStamp& aTimeStamp) : mTimeStamp(aTimeStamp) {}
private:
TimeStamp mTimeStamp;
};
/**
* A recorder for composited frames.
*
* This object collects frames sent to it by a |LayerManager| and writes them
* out as a series of images until recording has finished.
*
* If GPU-accelerated rendering is used, the frames will not be mapped into
* memory until |WriteCollectedFrames| is called.
*/
class CompositionRecorder {
public:
explicit CompositionRecorder(TimeStamp aRecordingStart);
/**
* Record a composited frame.
*/
void RecordFrame(RecordedFrame* aFrame);
/**
* Get the array of frames that were recorded since the last call to
* GetRecording(), where each frame consists of a presentation time and
* the PNG-encoded contents as an array of bytes
*/
Maybe<FrameRecording> GetRecording();
private:
nsTArray<RefPtr<RecordedFrame>> mRecordedFrames;
TimeStamp mRecordingStart;
};
} // namespace layers
} // namespace mozilla
#endif // mozilla_layers_CompositionRecorder_h
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