RasterImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aManager);
MOZ_ASSERT((aFlags & ~(FLAG_SYNC_DECODE |
FLAG_SYNC_DECODE_IF_FAST |
FLAG_ASYNC_NOTIFY))
== FLAG_NONE,
"Unsupported flag passed to GetImageContainer");
int32_t maxTextureSize = aManager->GetMaxTextureSize();
if (!mHasSize ||
mSize.width > maxTextureSize ||
mSize.height > maxTextureSize) {
return nullptr;
}
if (IsUnlocked() && mProgressTracker) {
mProgressTracker->OnUnlockedDraw();
}
RefPtr<layers::ImageContainer> container = mImageContainer.get();
bool mustRedecode =
(aFlags & (FLAG_SYNC_DECODE | FLAG_SYNC_DECODE_IF_FAST)) &&
mLastImageContainerDrawResult != DrawResult::SUCCESS &&
mLastImageContainerDrawResult != DrawResult::BAD_IMAGE;
if (container && !mustRedecode) {
return container.forget();
}
// We need a new ImageContainer, so create one.
container = LayerManager::CreateImageContainer();
DrawResult drawResult;
RefPtr<layers::Image> image;
Tie(drawResult, image) = GetCurrentImage(container, aFlags);
if (!image) {
return nullptr;
}
// |image| holds a reference to a SourceSurface which in turn holds a lock on
// the current frame's VolatileBuffer, ensuring that it doesn't get freed as
// long as the layer system keeps this ImageContainer alive.
AutoTArray<ImageContainer::NonOwningImage, 1> imageList;
imageList.AppendElement(ImageContainer::NonOwningImage(image, TimeStamp(),
mLastFrameID++,
mImageProducerID));
container->SetCurrentImagesInTransaction(imageList);
mLastImageContainerDrawResult = drawResult;
mImageContainer = container;
return container.forget();
}
jbyteArray JNICALL Java_ardrone_ARDrone_getCurrentImage(JNIEnv *env, jclass cls)
{
//TODO Does not work ... try to find a way to convert byte* to jbyteArray
_int8* imageBytes = GetCurrentImage();
jbyteArray resultingArray = env->NewByteArray(sizeof(imageBytes));
jbyte *bytes = env->GetByteArrayElements(resultingArray, 0);
for ( int i = 0; i < sizeof(imageBytes); i++ )
{
bytes[i] = imageBytes[i];
}
env->SetByteArrayRegion(resultingArray, 0, sizeof(imageBytes), bytes);
return resultingArray;
}
void
RasterImage::UpdateImageContainer()
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<layers::ImageContainer> container = mImageContainer.get();
if (!container) {
return;
}
DrawResult drawResult;
RefPtr<layers::Image> image;
Tie(drawResult, image) = GetCurrentImage(container, FLAG_NONE);
if (!image) {
return;
}
mLastImageContainerDrawResult = drawResult;
AutoTArray<ImageContainer::NonOwningImage, 1> imageList;
imageList.AppendElement(ImageContainer::NonOwningImage(image, TimeStamp(),
mLastFrameID++,
mImageProducerID));
container->SetCurrentImages(imageList);
}