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comparison: content/media/VideoSegment.h
content/media/VideoSegment.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 4 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef MOZILLA_VIDEOSEGMENT_H_ | |
| 7 #define MOZILLA_VIDEOSEGMENT_H_ | |
| 8 | |
| 9 #include "MediaSegment.h" | |
| 10 #include "nsCOMPtr.h" | |
| 11 #include "gfxPoint.h" | |
| 12 #include "nsAutoPtr.h" | |
| 13 #include "ImageContainer.h" | |
| 14 | |
| 15 namespace mozilla { | |
| 16 | |
| 17 namespace layers { | |
| 18 class Image; | |
| 19 } | |
| 20 | |
| 21 class VideoFrame { | |
| 22 public: | |
| 23 typedef mozilla::layers::Image Image; | |
| 24 | |
| 25 VideoFrame(already_AddRefed<Image>& aImage, const gfxIntSize& aIntrinsicSize); | |
| 26 VideoFrame(); | |
| 27 ~VideoFrame(); | |
| 28 | |
| 29 bool operator==(const VideoFrame& aFrame) const | |
| 30 { | |
| 31 return mIntrinsicSize == aFrame.mIntrinsicSize && | |
| 32 mForceBlack == aFrame.mForceBlack && | |
| 33 ((mForceBlack && aFrame.mForceBlack) || mImage == aFrame.mImage); | |
| 34 } | |
| 35 bool operator!=(const VideoFrame& aFrame) const | |
| 36 { | |
| 37 return !operator==(aFrame); | |
| 38 } | |
| 39 | |
| 40 Image* GetImage() const { return mImage; } | |
| 41 void SetForceBlack(bool aForceBlack) { mForceBlack = aForceBlack; } | |
| 42 bool GetForceBlack() const { return mForceBlack; } | |
| 43 const gfxIntSize& GetIntrinsicSize() const { return mIntrinsicSize; } | |
| 44 void SetNull(); | |
| 45 void TakeFrom(VideoFrame* aFrame); | |
| 46 | |
| 47 protected: | |
| 48 // mImage can be null to indicate "no video" (aka "empty frame"). It can | |
| 49 // still have an intrinsic size in this case. | |
| 50 nsRefPtr<Image> mImage; | |
| 51 // The desired size to render the video frame at. | |
| 52 gfxIntSize mIntrinsicSize; | |
| 53 bool mForceBlack; | |
| 54 }; | |
| 55 | |
| 56 struct VideoChunk { | |
| 57 VideoChunk(); | |
| 58 ~VideoChunk(); | |
| 59 void SliceTo(TrackTicks aStart, TrackTicks aEnd) | |
| 60 { | |
| 61 NS_ASSERTION(aStart >= 0 && aStart < aEnd && aEnd <= mDuration, | |
| 62 "Slice out of bounds"); | |
| 63 mDuration = aEnd - aStart; | |
| 64 } | |
| 65 TrackTicks GetDuration() const { return mDuration; } | |
| 66 bool CanCombineWithFollowing(const VideoChunk& aOther) const | |
| 67 { | |
| 68 return aOther.mFrame == mFrame; | |
| 69 } | |
| 70 bool IsNull() const { return !mFrame.GetImage(); } | |
| 71 void SetNull(TrackTicks aDuration) | |
| 72 { | |
| 73 mDuration = aDuration; | |
| 74 mFrame.SetNull(); | |
| 75 mTimeStamp = TimeStamp(); | |
| 76 } | |
| 77 void SetForceBlack(bool aForceBlack) { mFrame.SetForceBlack(aForceBlack); } | |
| 78 | |
| 79 size_t SizeOfExcludingThisIfUnshared(MallocSizeOf aMallocSizeOf) const | |
| 80 { | |
| 81 // Future: | |
| 82 // - mFrame | |
| 83 return 0; | |
| 84 } | |
| 85 | |
| 86 TrackTicks mDuration; | |
| 87 VideoFrame mFrame; | |
| 88 mozilla::TimeStamp mTimeStamp; | |
| 89 }; | |
| 90 | |
| 91 class VideoSegment : public MediaSegmentBase<VideoSegment, VideoChunk> { | |
| 92 public: | |
| 93 typedef mozilla::layers::Image Image; | |
| 94 typedef mozilla::gfx::IntSize IntSize; | |
| 95 | |
| 96 VideoSegment(); | |
| 97 ~VideoSegment(); | |
| 98 | |
| 99 void AppendFrame(already_AddRefed<Image>&& aImage, TrackTicks aDuration, | |
| 100 const IntSize& aIntrinsicSize); | |
| 101 const VideoFrame* GetFrameAt(TrackTicks aOffset, TrackTicks* aStart = nullptr) | |
| 102 { | |
| 103 VideoChunk* c = FindChunkContaining(aOffset, aStart); | |
| 104 if (!c) { | |
| 105 return nullptr; | |
| 106 } | |
| 107 return &c->mFrame; | |
| 108 } | |
| 109 const VideoFrame* GetLastFrame(TrackTicks* aStart = nullptr) | |
| 110 { | |
| 111 VideoChunk* c = GetLastChunk(); | |
| 112 if (!c) { | |
| 113 return nullptr; | |
| 114 } | |
| 115 if (aStart) { | |
| 116 *aStart = mDuration - c->mDuration; | |
| 117 } | |
| 118 return &c->mFrame; | |
| 119 } | |
| 120 // Override default impl | |
| 121 virtual void ReplaceWithDisabled() MOZ_OVERRIDE { | |
| 122 for (ChunkIterator i(*this); | |
| 123 !i.IsEnded(); i.Next()) { | |
| 124 VideoChunk& chunk = *i; | |
| 125 chunk.SetForceBlack(true); | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 // Segment-generic methods not in MediaSegmentBase | |
| 130 static Type StaticType() { return VIDEO; } | |
| 131 | |
| 132 virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE | |
| 133 { | |
| 134 return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf); | |
| 135 } | |
| 136 }; | |
| 137 | |
| 138 } | |
| 139 | |
| 140 #endif /* MOZILLA_VIDEOSEGMENT_H_ */ |
