本文整理汇总了C++中VideoSegment::IsEmpty方法的典型用法代码示例。如果您正苦于以下问题：C++ VideoSegment::IsEmpty方法的具体用法？C++ VideoSegment::IsEmpty怎么用？C++ VideoSegment::IsEmpty使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类VideoSegment的用法示例。
在下文中一共展示了VideoSegment::IsEmpty方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: SetCurrentFrames
void VideoFrameContainer::SetCurrentFrames(const VideoSegment& aSegment)
{
if (aSegment.IsEmpty()) {
return;
}
MutexAutoLock lock(mMutex);
// Collect any new frames produced in this iteration.
AutoTArray<ImageContainer::NonOwningImage,4> newImages;
PrincipalHandle lastPrincipalHandle = PRINCIPAL_HANDLE_NONE;
VideoSegment::ConstChunkIterator iter(aSegment);
while (!iter.IsEnded()) {
VideoChunk chunk = *iter;
const VideoFrame* frame = &chunk.mFrame;
if (*frame == mLastPlayedVideoFrame) {
iter.Next();
continue;
}
Image* image = frame->GetImage();
CONTAINER_LOG(LogLevel::Verbose,
("VideoFrameContainer %p writing video frame %p (%d x %d)",
this, image, frame->GetIntrinsicSize().width,
frame->GetIntrinsicSize().height));
if (frame->GetForceBlack()) {
if (!mBlackImage) {
mBlackImage = GetImageContainer()->CreatePlanarYCbCrImage();
if (mBlackImage) {
// Sets the image to a single black pixel, which will be scaled to
// fill the rendered size.
SetImageToBlackPixel(mBlackImage->AsPlanarYCbCrImage());
}
}
if (mBlackImage) {
image = mBlackImage;
}
}
// Don't append null image to the newImages.
if (!image) {
iter.Next();
continue;
}
newImages.AppendElement(ImageContainer::NonOwningImage(image, chunk.mTimeStamp));
lastPrincipalHandle = chunk.GetPrincipalHandle();
mLastPlayedVideoFrame = *frame;
iter.Next();
}
// Don't update if there are no changes.
if (newImages.IsEmpty()) {
return;
}
AutoTArray<ImageContainer::NonOwningImage,4> images;
bool principalHandleChanged =
lastPrincipalHandle != PRINCIPAL_HANDLE_NONE &&
lastPrincipalHandle != GetLastPrincipalHandleLocked();
// Add the frames from this iteration.
for (auto& image : newImages) {
image.mFrameID = NewFrameID();
images.AppendElement(image);
}
if (principalHandleChanged) {
UpdatePrincipalHandleForFrameIDLocked(lastPrincipalHandle,
newImages.LastElement().mFrameID);
}
SetCurrentFramesLocked(mLastPlayedVideoFrame.GetIntrinsicSize(), images);
nsCOMPtr<nsIRunnable> event =
new VideoFrameContainerInvalidateRunnable(this);
mMainThread->Dispatch(event.forget());
images.ClearAndRetainStorage();
}