1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/camera/CameraPreviewMediaStream.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,61 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef DOM_CAMERA_CAMERAPREVIEWMEDIASTREAM_H
1.9 +#define DOM_CAMERA_CAMERAPREVIEWMEDIASTREAM_H
1.10 +
1.11 +#include "VideoFrameContainer.h"
1.12 +#include "MediaStreamGraph.h"
1.13 +#include "mozilla/Mutex.h"
1.14 +
1.15 +namespace mozilla {
1.16 +
1.17 +class CameraPreviewFrameCallback {
1.18 +public:
1.19 + virtual void OnNewFrame(const gfxIntSize& aIntrinsicSize, layers::Image* aImage) = 0;
1.20 +};
1.21 +
1.22 +/**
1.23 + * This is a stream for camere preview.
1.24 + *
1.25 + * XXX It is a temporary fix of SourceMediaStream.
1.26 + * A camera preview requests no delay and no buffering stream.
1.27 + * But the SourceMediaStream do not support it.
1.28 + */
1.29 +class CameraPreviewMediaStream : public MediaStream
1.30 +{
1.31 + typedef mozilla::layers::Image Image;
1.32 +
1.33 +public:
1.34 + CameraPreviewMediaStream(DOMMediaStream* aWrapper);
1.35 +
1.36 + virtual void AddAudioOutput(void* aKey) MOZ_OVERRIDE;
1.37 + virtual void SetAudioOutputVolume(void* aKey, float aVolume) MOZ_OVERRIDE;
1.38 + virtual void RemoveAudioOutput(void* aKey) MOZ_OVERRIDE;
1.39 + virtual void AddVideoOutput(VideoFrameContainer* aContainer) MOZ_OVERRIDE;
1.40 + virtual void RemoveVideoOutput(VideoFrameContainer* aContainer) MOZ_OVERRIDE;
1.41 + virtual void ChangeExplicitBlockerCount(int32_t aDelta) MOZ_OVERRIDE;
1.42 + virtual void AddListener(MediaStreamListener* aListener) MOZ_OVERRIDE;
1.43 + virtual void RemoveListener(MediaStreamListener* aListener) MOZ_OVERRIDE;
1.44 + virtual void Destroy();
1.45 +
1.46 + // Call these on any thread.
1.47 + void SetCurrentFrame(const gfxIntSize& aIntrinsicSize, Image* aImage);
1.48 + void ClearCurrentFrame();
1.49 +
1.50 + void SetFrameCallback(CameraPreviewFrameCallback* aCallback) {
1.51 + mFrameCallback = aCallback;
1.52 + }
1.53 +
1.54 +protected:
1.55 + // mMutex protects all the class' fields.
1.56 + // This class is not registered to MediaStreamGraph.
1.57 + // It needs to protect all the fields.
1.58 + Mutex mMutex;
1.59 + CameraPreviewFrameCallback* mFrameCallback;
1.60 +};
1.61 +
1.62 +}
1.63 +
1.64 +#endif // DOM_CAMERA_CAMERAPREVIEWMEDIASTREAM_H
