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 #include "VideoSegment.h"
7
8 #include "gfx2DGlue.h"
9 #include "ImageContainer.h"
10 #include "Layers.h"
11 #include "VideoUtils.h"
12 #include "mozilla/UniquePtr.h"
13
14 namespace mozilla {
15
16 using namespace layers;
17
VideoFrame(already_AddRefed<Image> aImage,const gfx::IntSize & aIntrinsicSize)18 VideoFrame::VideoFrame(already_AddRefed<Image> aImage,
19 const gfx::IntSize& aIntrinsicSize)
20 : mImage(aImage),
21 mIntrinsicSize(aIntrinsicSize),
22 mForceBlack(false),
23 mPrincipalHandle(PRINCIPAL_HANDLE_NONE) {}
24
VideoFrame()25 VideoFrame::VideoFrame()
26 : mIntrinsicSize(0, 0),
27 mForceBlack(false),
28 mPrincipalHandle(PRINCIPAL_HANDLE_NONE) {}
29
30 VideoFrame::~VideoFrame() = default;
31
SetNull()32 void VideoFrame::SetNull() {
33 mImage = nullptr;
34 mIntrinsicSize = gfx::IntSize(0, 0);
35 mPrincipalHandle = PRINCIPAL_HANDLE_NONE;
36 }
37
TakeFrom(VideoFrame * aFrame)38 void VideoFrame::TakeFrom(VideoFrame* aFrame) {
39 mImage = std::move(aFrame->mImage);
40 mIntrinsicSize = aFrame->mIntrinsicSize;
41 mForceBlack = aFrame->GetForceBlack();
42 mPrincipalHandle = aFrame->mPrincipalHandle;
43 }
44
45 /* static */
CreateBlackImage(const gfx::IntSize & aSize)46 already_AddRefed<Image> VideoFrame::CreateBlackImage(
47 const gfx::IntSize& aSize) {
48 RefPtr<ImageContainer> container =
49 LayerManager::CreateImageContainer(ImageContainer::ASYNCHRONOUS);
50 RefPtr<PlanarYCbCrImage> image = container->CreatePlanarYCbCrImage();
51 if (!image) {
52 return nullptr;
53 }
54
55 int len = ((aSize.width * aSize.height) * 3 / 2);
56
57 // Generate a black image.
58 auto frame = MakeUnique<uint8_t[]>(len);
59 int y = aSize.width * aSize.height;
60 // Fill Y plane.
61 memset(frame.get(), 0x10, y);
62 // Fill Cb/Cr planes.
63 memset(frame.get() + y, 0x80, (len - y));
64
65 const uint8_t lumaBpp = 8;
66 const uint8_t chromaBpp = 4;
67
68 layers::PlanarYCbCrData data;
69 data.mYChannel = frame.get();
70 data.mYSize = gfx::IntSize(aSize.width, aSize.height);
71 data.mYStride = (int32_t)(aSize.width * lumaBpp / 8.0);
72 data.mCbCrStride = (int32_t)(aSize.width * chromaBpp / 8.0);
73 data.mCbChannel = frame.get() + aSize.height * data.mYStride;
74 data.mCrChannel = data.mCbChannel + aSize.height * data.mCbCrStride / 2;
75 data.mCbCrSize = gfx::IntSize(aSize.width / 2, aSize.height / 2);
76 data.mPicX = 0;
77 data.mPicY = 0;
78 data.mPicSize = gfx::IntSize(aSize.width, aSize.height);
79 data.mStereoMode = StereoMode::MONO;
80 data.mYUVColorSpace = gfx::YUVColorSpace::BT601;
81 // This could be made FULL once bug 1568745 is complete. A black pixel being
82 // 0x00, 0x80, 0x80
83 data.mColorRange = gfx::ColorRange::LIMITED;
84
85 // Copies data, so we can free data.
86 if (!image->CopyData(data)) {
87 return nullptr;
88 }
89
90 return image.forget();
91 }
92
AppendFrame(already_AddRefed<Image> && aImage,const IntSize & aIntrinsicSize,const PrincipalHandle & aPrincipalHandle,bool aForceBlack,TimeStamp aTimeStamp)93 void VideoSegment::AppendFrame(already_AddRefed<Image>&& aImage,
94 const IntSize& aIntrinsicSize,
95 const PrincipalHandle& aPrincipalHandle,
96 bool aForceBlack, TimeStamp aTimeStamp) {
97 VideoChunk* chunk = AppendChunk(0);
98 chunk->mTimeStamp = aTimeStamp;
99 VideoFrame frame(std::move(aImage), aIntrinsicSize);
100 MOZ_ASSERT_IF(!IsNull(), !aTimeStamp.IsNull());
101 frame.SetForceBlack(aForceBlack);
102 frame.SetPrincipalHandle(aPrincipalHandle);
103 chunk->mFrame.TakeFrom(&frame);
104 }
105
VideoSegment()106 VideoSegment::VideoSegment()
107 : MediaSegmentBase<VideoSegment, VideoChunk>(VIDEO) {}
108
VideoSegment(VideoSegment && aSegment)109 VideoSegment::VideoSegment(VideoSegment&& aSegment)
110 : MediaSegmentBase<VideoSegment, VideoChunk>(std::move(aSegment)) {}
111
112 VideoSegment::~VideoSegment() = default;
113
114 } // namespace mozilla
115