5 files changed, 610 insertions, 0 deletions

diff --git a/dom/media/imagecapture/CaptureTask.cpp b/dom/media/imagecapture/CaptureTask.cpp
new file mode 100644
index 0000000000..d83de76f5e
--- /dev/null
+++ b/dom/media/imagecapture/CaptureTask.cpp
@@ -0,0 +1,197 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#include "CaptureTask.h"
+#include "gfxUtils.h"
+#include "mozilla/dom/BlobImpl.h"
+#include "mozilla/dom/ImageCapture.h"
+#include "mozilla/dom/ImageCaptureError.h"
+#include "mozilla/dom/ImageEncoder.h"
+#include "mozilla/dom/MediaStreamTrack.h"
+#include "mozilla/dom/VideoStreamTrack.h"
+#include "mozilla/SchedulerGroup.h"
+#include "nsThreadUtils.h"
+#include "VideoSegment.h"
+
+namespace mozilla {
+
+class CaptureTask::MediaTrackEventListener : public MediaTrackListener {
+ public:
+  explicit MediaTrackEventListener(CaptureTask* aCaptureTask)
+      : mCaptureTask(aCaptureTask){};
+
+  // MediaTrackListener methods.
+  void NotifyEnded(MediaTrackGraph* aGraph) override {
+    mCaptureTask->PostTrackEndEvent();
+  }
+
+ private:
+  CaptureTask* mCaptureTask;
+};
+
+CaptureTask::CaptureTask(dom::ImageCapture* aImageCapture)
+    : mImageCapture(aImageCapture),
+      mEventListener(new MediaTrackEventListener(this)),
+      mImageGrabbedOrTrackEnd(false),
+      mPrincipalChanged(false) {}
+
+nsresult CaptureTask::TaskComplete(already_AddRefed<dom::BlobImpl> aBlobImpl,
+                                   nsresult aRv) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  DetachTrack();
+
+  nsresult rv;
+  RefPtr<dom::BlobImpl> blobImpl(aBlobImpl);
+
+  // We have to set the parent because the blob has been generated with a valid
+  // one.
+  RefPtr<dom::Blob> blob;
+  if (blobImpl) {
+    blob = dom::Blob::Create(mImageCapture->GetOwnerGlobal(), blobImpl);
+    if (NS_WARN_IF(!blob)) {
+      return NS_ERROR_FAILURE;
+    }
+  }
+
+  if (mPrincipalChanged) {
+    aRv = NS_ERROR_DOM_SECURITY_ERR;
+    IC_LOG("MediaStream principal should not change during TakePhoto().");
+  }
+
+  if (NS_SUCCEEDED(aRv)) {
+    rv = mImageCapture->PostBlobEvent(blob);
+  } else {
+    rv =
+        mImageCapture->PostErrorEvent(dom::ImageCaptureError::PHOTO_ERROR, aRv);
+  }
+
+  // Ensure ImageCapture dereference on main thread here because the TakePhoto()
+  // sequences stopped here.
+  mImageCapture = nullptr;
+
+  return rv;
+}
+
+void CaptureTask::AttachTrack() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  dom::MediaStreamTrack* track = mImageCapture->GetVideoStreamTrack();
+  track->AddPrincipalChangeObserver(this);
+  track->AddListener(mEventListener.get());
+  track->AddDirectListener(this);
+}
+
+void CaptureTask::DetachTrack() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  dom::MediaStreamTrack* track = mImageCapture->GetVideoStreamTrack();
+  track->RemovePrincipalChangeObserver(this);
+  track->RemoveListener(mEventListener.get());
+  track->RemoveDirectListener(this);
+}
+
+void CaptureTask::PrincipalChanged(dom::MediaStreamTrack* aMediaStreamTrack) {
+  MOZ_ASSERT(NS_IsMainThread());
+  mPrincipalChanged = true;
+}
+
+void CaptureTask::NotifyRealtimeTrackData(MediaTrackGraph* aGraph,
+                                          TrackTime aTrackOffset,
+                                          const MediaSegment& aMedia) {
+  MOZ_ASSERT(aMedia.GetType() == MediaSegment::VIDEO);
+  const VideoSegment& video = static_cast<const VideoSegment&>(aMedia);
+
+  // Callback for encoding complete, it calls on main thread.
+  class EncodeComplete : public dom::EncodeCompleteCallback {
+   public:
+    explicit EncodeComplete(CaptureTask* aTask) : mTask(aTask) {}
+
+    bool CanBeDeletedOnAnyThread() override {
+      // EncodeComplete is used from the main thread only.
+      return false;
+    }
+
+    nsresult ReceiveBlobImpl(
+        already_AddRefed<dom::BlobImpl> aBlobImpl) override {
+      MOZ_ASSERT(NS_IsMainThread());
+      RefPtr<dom::BlobImpl> blobImpl(aBlobImpl);
+      mTask->TaskComplete(blobImpl.forget(), NS_OK);
+      mTask = nullptr;
+      return NS_OK;
+    }
+
+   protected:
+    RefPtr<CaptureTask> mTask;
+  };
+
+  for (VideoSegment::ConstChunkIterator iter(video); !iter.IsEnded();
+       iter.Next()) {
+    VideoChunk chunk = *iter;
+
+    // Extract the first valid video frame.
+    VideoFrame frame;
+    if (chunk.IsNull()) {
+      continue;
+    }
+
+    RefPtr<layers::Image> image;
+    if (chunk.mFrame.GetForceBlack()) {
+      // Create a black image.
+      image = VideoFrame::CreateBlackImage(chunk.mFrame.GetIntrinsicSize());
+    } else {
+      image = chunk.mFrame.GetImage();
+    }
+    if (!image) {
+      MOZ_ASSERT(image);
+      continue;
+    }
+
+    bool wasGrabbed = mImageGrabbedOrTrackEnd.exchange(true);
+    if (wasGrabbed) {
+      return;
+    }
+
+    // Encode image.
+    nsresult rv;
+    nsAutoString type(u"image/jpeg"_ns);
+    nsAutoString options;
+    rv = dom::ImageEncoder::ExtractDataFromLayersImageAsync(
+        type, options, false, image, false, new EncodeComplete(this));
+    if (NS_FAILED(rv)) {
+      PostTrackEndEvent();
+    }
+  }
+}
+
+void CaptureTask::PostTrackEndEvent() {
+  bool wasGrabbed = mImageGrabbedOrTrackEnd.exchange(true);
+  if (wasGrabbed) {
+    return;
+  }
+
+  // Got track end or finish event, stop the task.
+  class TrackEndRunnable : public Runnable {
+   public:
+    explicit TrackEndRunnable(CaptureTask* aTask)
+        : mozilla::Runnable("TrackEndRunnable"), mTask(aTask) {}
+
+    NS_IMETHOD Run() override {
+      mTask->TaskComplete(nullptr, NS_ERROR_FAILURE);
+      mTask = nullptr;
+      return NS_OK;
+    }
+
+   protected:
+    RefPtr<CaptureTask> mTask;
+  };
+
+  IC_LOG("Got MediaTrack track removed or finished event.");
+  nsCOMPtr<nsIRunnable> event = new TrackEndRunnable(this);
+  SchedulerGroup::Dispatch(TaskCategory::Other, event.forget());
+}
+
+}  // namespace mozilla
diff --git a/dom/media/imagecapture/CaptureTask.h b/dom/media/imagecapture/CaptureTask.h
new file mode 100644
index 0000000000..efcd0e84b2
--- /dev/null
+++ b/dom/media/imagecapture/CaptureTask.h
@@ -0,0 +1,90 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 CAPTURETASK_H
+#define CAPTURETASK_H
+
+#include "MediaTrackGraph.h"
+#include "MediaTrackListener.h"
+#include "PrincipalChangeObserver.h"
+
+namespace mozilla {
+
+namespace dom {
+class BlobImpl;
+class ImageCapture;
+class MediaStreamTrack;
+}  // namespace dom
+
+/**
+ * CaptureTask retrieves image from MediaTrack and encodes the image to jpeg in
+ * ImageEncoder. The whole procedures start at AttachTrack(), it will add this
+ * class into MediaTrack and retrieves an image in MediaTrackGraph thread.
+ * Once the image is retrieved, it will be sent to ImageEncoder and the encoded
+ * blob will be sent out via encoder callback in main thread.
+ *
+ * CaptureTask holds a reference of ImageCapture to ensure ImageCapture won't be
+ * released during the period of the capturing process described above.
+ */
+class CaptureTask : public DirectMediaTrackListener,
+                    public dom::PrincipalChangeObserver<dom::MediaStreamTrack> {
+ public:
+  class MediaTrackEventListener;
+
+  // DirectMediaTrackListener methods
+  void NotifyRealtimeTrackData(MediaTrackGraph* aGraph, TrackTime aTrackOffset,
+                               const MediaSegment& aMedia) override;
+
+  // PrincipalChangeObserver<MediaStreamTrack> methods
+  void PrincipalChanged(dom::MediaStreamTrack* aMediaStreamTrack) override;
+
+  // CaptureTask methods.
+
+  // It is called when aBlob is ready to post back to script in company with
+  // aRv == NS_OK. If aRv is not NS_OK, it will post an error event to script.
+  //
+  // Note:
+  //   this function should be called on main thread.
+  nsresult TaskComplete(already_AddRefed<dom::BlobImpl> aBlobImpl,
+                        nsresult aRv);
+
+  // Add listeners into MediaStreamTrack and PrincipalChangeObserver.
+  // It should be on main thread only.
+  void AttachTrack();
+
+  // Remove listeners from MediaStreamTrack and PrincipalChangeObserver.
+  // It should be on main thread only.
+  void DetachTrack();
+
+  // CaptureTask should be created on main thread.
+  explicit CaptureTask(dom::ImageCapture* aImageCapture);
+
+ protected:
+  virtual ~CaptureTask() = default;
+
+  // Post a runnable on main thread to end this task and call TaskComplete to
+  // post error event to script. It is called off-main-thread.
+  void PostTrackEndEvent();
+
+  // The ImageCapture associates with this task. This reference count should not
+  // change in this class unless it clears this reference after a blob or error
+  // event to script.
+  RefPtr<dom::ImageCapture> mImageCapture;
+
+  RefPtr<MediaTrackEventListener> mEventListener;
+
+  // True when an image is retrieved from the video track, or MediaTrackGraph
+  // sends a track finish, end, or removed event. Any thread.
+  Atomic<bool> mImageGrabbedOrTrackEnd;
+
+  // True after MediaStreamTrack principal changes while waiting for a photo
+  // to finish and we should raise a security error.
+  bool mPrincipalChanged;
+};
+
+}  // namespace mozilla
+
+#endif  // CAPTURETASK_H
diff --git a/dom/media/imagecapture/ImageCapture.cpp b/dom/media/imagecapture/ImageCapture.cpp
new file mode 100644
index 0000000000..d32c22d054
--- /dev/null
+++ b/dom/media/imagecapture/ImageCapture.cpp
@@ -0,0 +1,212 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#include "ImageCapture.h"
+#include "mozilla/dom/BlobEvent.h"
+#include "mozilla/dom/DOMException.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/File.h"
+#include "mozilla/dom/ImageCaptureError.h"
+#include "mozilla/dom/ImageCaptureErrorEvent.h"
+#include "mozilla/dom/ImageCaptureErrorEventBinding.h"
+#include "mozilla/dom/VideoStreamTrack.h"
+#include "mozilla/dom/Document.h"
+#include "CaptureTask.h"
+#include "MediaEngineSource.h"
+
+namespace mozilla {
+
+LogModule* GetICLog() {
+  static LazyLogModule log("ImageCapture");
+  return log;
+}
+
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(ImageCapture, DOMEventTargetHelper, mTrack)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ImageCapture)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+NS_IMPL_ADDREF_INHERITED(ImageCapture, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(ImageCapture, DOMEventTargetHelper)
+
+ImageCapture::ImageCapture(VideoStreamTrack* aTrack,
+                           nsPIDOMWindowInner* aOwnerWindow)
+    : DOMEventTargetHelper(aOwnerWindow), mTrack(aTrack) {
+  MOZ_ASSERT(aOwnerWindow);
+  MOZ_ASSERT(aTrack);
+}
+
+ImageCapture::~ImageCapture() { MOZ_ASSERT(NS_IsMainThread()); }
+
+already_AddRefed<ImageCapture> ImageCapture::Constructor(
+    const GlobalObject& aGlobal, MediaStreamTrack& aTrack, ErrorResult& aRv) {
+  nsCOMPtr<nsPIDOMWindowInner> win = do_QueryInterface(aGlobal.GetAsSupports());
+  if (!win) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return nullptr;
+  }
+
+  if (!aTrack.AsVideoStreamTrack()) {
+    aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
+    return nullptr;
+  }
+
+  RefPtr<ImageCapture> object =
+      new ImageCapture(aTrack.AsVideoStreamTrack(), win);
+
+  return object.forget();
+}
+
+MediaStreamTrack* ImageCapture::GetVideoStreamTrack() const { return mTrack; }
+
+nsresult ImageCapture::TakePhotoByMediaEngine() {
+  // Callback for TakPhoto(), it also monitor the principal. If principal
+  // changes, it returns PHOTO_ERROR with security error.
+  class TakePhotoCallback : public MediaEnginePhotoCallback,
+                            public PrincipalChangeObserver<MediaStreamTrack> {
+   public:
+    TakePhotoCallback(VideoStreamTrack* aVideoTrack,
+                      ImageCapture* aImageCapture)
+        : mVideoTrack(aVideoTrack),
+          mImageCapture(aImageCapture),
+          mPrincipalChanged(false) {
+      MOZ_ASSERT(NS_IsMainThread());
+      mVideoTrack->AddPrincipalChangeObserver(this);
+    }
+
+    void PrincipalChanged(MediaStreamTrack* aMediaStream) override {
+      mPrincipalChanged = true;
+    }
+
+    nsresult PhotoComplete(already_AddRefed<Blob> aBlob) override {
+      RefPtr<Blob> blob = aBlob;
+
+      if (mPrincipalChanged) {
+        return PhotoError(NS_ERROR_DOM_SECURITY_ERR);
+      }
+      return mImageCapture->PostBlobEvent(blob);
+    }
+
+    nsresult PhotoError(nsresult aRv) override {
+      return mImageCapture->PostErrorEvent(ImageCaptureError::PHOTO_ERROR, aRv);
+    }
+
+   protected:
+    ~TakePhotoCallback() {
+      MOZ_ASSERT(NS_IsMainThread());
+      mVideoTrack->RemovePrincipalChangeObserver(this);
+    }
+
+    const RefPtr<VideoStreamTrack> mVideoTrack;
+    const RefPtr<ImageCapture> mImageCapture;
+    bool mPrincipalChanged;
+  };
+
+  RefPtr<MediaEnginePhotoCallback> callback =
+      new TakePhotoCallback(mTrack, this);
+  return mTrack->GetSource().TakePhoto(callback);
+}
+
+void ImageCapture::TakePhoto(ErrorResult& aResult) {
+  // According to spec, MediaStreamTrack.readyState must be "live"; however
+  // gecko doesn't implement it yet (bug 910249). Instead of readyState, we
+  // check MediaStreamTrack.enable before bug 910249 is fixed.
+  // The error code should be INVALID_TRACK, but spec doesn't define it in
+  // ImageCaptureError. So it returns PHOTO_ERROR here before spec updates.
+  if (!mTrack->Enabled()) {
+    PostErrorEvent(ImageCaptureError::PHOTO_ERROR, NS_ERROR_FAILURE);
+    return;
+  }
+
+  // Try if MediaEngine supports taking photo.
+  nsresult rv = TakePhotoByMediaEngine();
+
+  // It falls back to MediaTrackGraph image capture if MediaEngine doesn't
+  // support TakePhoto().
+  if (rv == NS_ERROR_NOT_IMPLEMENTED) {
+    IC_LOG(
+        "MediaEngine doesn't support TakePhoto(), it falls back to "
+        "MediaTrackGraph.");
+    RefPtr<CaptureTask> task = new CaptureTask(this);
+
+    // It adds itself into MediaTrackGraph, so ImageCapture doesn't need to
+    // hold the reference.
+    task->AttachTrack();
+  }
+}
+
+nsresult ImageCapture::PostBlobEvent(Blob* aBlob) {
+  MOZ_ASSERT(NS_IsMainThread());
+  if (!CheckPrincipal()) {
+    // Media is not same-origin, don't allow the data out.
+    return PostErrorEvent(ImageCaptureError::PHOTO_ERROR,
+                          NS_ERROR_DOM_SECURITY_ERR);
+  }
+
+  BlobEventInit init;
+  init.mBubbles = false;
+  init.mCancelable = false;
+  init.mData = aBlob;
+
+  RefPtr<BlobEvent> blob_event =
+      BlobEvent::Constructor(this, u"photo"_ns, init);
+
+  return DispatchTrustedEvent(blob_event);
+}
+
+nsresult ImageCapture::PostErrorEvent(uint16_t aErrorCode, nsresult aReason) {
+  MOZ_ASSERT(NS_IsMainThread());
+  nsresult rv = CheckCurrentGlobalCorrectness();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsString errorMsg;
+  if (NS_FAILED(aReason)) {
+    nsCString name, message;
+    rv = NS_GetNameAndMessageForDOMNSResult(aReason, name, message);
+    if (NS_SUCCEEDED(rv)) {
+      CopyASCIItoUTF16(message, errorMsg);
+    }
+  }
+
+  RefPtr<ImageCaptureError> error = new ImageCaptureError(
+      static_cast<EventTarget*>(this), aErrorCode, errorMsg);
+
+  ImageCaptureErrorEventInit init;
+  init.mBubbles = false;
+  init.mCancelable = false;
+  init.mImageCaptureError = error;
+
+  RefPtr<Event> event =
+      ImageCaptureErrorEvent::Constructor(this, u"error"_ns, init);
+
+  return DispatchTrustedEvent(event);
+}
+
+bool ImageCapture::CheckPrincipal() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsCOMPtr<nsIPrincipal> principal = mTrack->GetPrincipal();
+
+  if (!GetOwner()) {
+    return false;
+  }
+  nsCOMPtr<Document> doc = GetOwner()->GetExtantDoc();
+  if (!doc || !principal) {
+    return false;
+  }
+
+  bool subsumes;
+  if (NS_FAILED(doc->NodePrincipal()->Subsumes(principal, &subsumes))) {
+    return false;
+  }
+
+  return subsumes;
+}
+
+}  // namespace dom
+}  // namespace mozilla
diff --git a/dom/media/imagecapture/ImageCapture.h b/dom/media/imagecapture/ImageCapture.h
new file mode 100644
index 0000000000..957a3ffccc
--- /dev/null
+++ b/dom/media/imagecapture/ImageCapture.h
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 IMAGECAPTURE_H
+#define IMAGECAPTURE_H
+
+#include "mozilla/DOMEventTargetHelper.h"
+#include "mozilla/dom/ImageCaptureBinding.h"
+#include "mozilla/Logging.h"
+
+namespace mozilla {
+
+#ifndef IC_LOG
+LogModule* GetICLog();
+#  define IC_LOG(...) \
+    MOZ_LOG(GetICLog(), mozilla::LogLevel::Debug, (__VA_ARGS__))
+#endif
+
+namespace dom {
+
+class Blob;
+class MediaStreamTrack;
+class VideoStreamTrack;
+
+/**
+ * Implementation of https://dvcs.w3.org/hg/dap/raw-file/default/media-stream-
+ * capture/ImageCapture.html.
+ * The ImageCapture accepts a video MediaStreamTrack as input source. The image
+ * will be sent back as a JPG format via Blob event.
+ *
+ * All the functions in ImageCapture are run in main thread.
+ *
+ * There are two ways to capture image, MediaEngineSource and MediaTrackGraph.
+ * When the implementation of MediaEngineSource supports TakePhoto(),
+ * it uses the platform camera to grab image. Otherwise, it falls back
+ * to the MediaTrackGraph way.
+ */
+
+class ImageCapture final : public DOMEventTargetHelper {
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ImageCapture, DOMEventTargetHelper)
+
+  IMPL_EVENT_HANDLER(photo)
+  IMPL_EVENT_HANDLER(error)
+
+  // WebIDL members.
+  void TakePhoto(ErrorResult& aResult);
+
+  // The MediaStreamTrack passed into the constructor.
+  MediaStreamTrack* GetVideoStreamTrack() const;
+
+  // nsWrapperCache member
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override {
+    return ImageCapture_Binding::Wrap(aCx, this, aGivenProto);
+  }
+
+  // ImageCapture class members
+  nsPIDOMWindowInner* GetParentObject() { return GetOwner(); }
+
+  static already_AddRefed<ImageCapture> Constructor(const GlobalObject& aGlobal,
+                                                    MediaStreamTrack& aTrack,
+                                                    ErrorResult& aRv);
+
+  ImageCapture(VideoStreamTrack* aTrack, nsPIDOMWindowInner* aOwnerWindow);
+
+  // Post a Blob event to script.
+  nsresult PostBlobEvent(Blob* aBlob);
+
+  // Post an error event to script.
+  // aErrorCode should be one of error codes defined in ImageCaptureError.h.
+  // aReason is the nsresult which maps to a error string in
+  // dom/base/domerr.msg.
+  nsresult PostErrorEvent(uint16_t aErrorCode, nsresult aReason = NS_OK);
+
+  bool CheckPrincipal();
+
+ protected:
+  virtual ~ImageCapture();
+
+  // Capture image by MediaEngine. If it's not support taking photo, this
+  // function should return NS_ERROR_NOT_IMPLEMENTED.
+  nsresult TakePhotoByMediaEngine();
+
+  RefPtr<VideoStreamTrack> mTrack;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // IMAGECAPTURE_H
diff --git a/dom/media/imagecapture/moz.build b/dom/media/imagecapture/moz.build
new file mode 100644
index 0000000000..fdbc73430d
--- /dev/null
+++ b/dom/media/imagecapture/moz.build
@@ -0,0 +1,16 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+EXPORTS.mozilla.dom += ["ImageCapture.h"]
+
+UNIFIED_SOURCES += [
+    "CaptureTask.cpp",
+    "ImageCapture.cpp",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+FINAL_LIBRARY = "xul"