gecko-dev/dom/camera/CameraPreviewMediaStream.cpp
Nathan Froyd 01583602a9 Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout.  The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.

CLOSED TREE makes big refactorings like this a piece of cake.

 # The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
    xargs perl -p -i -e '
 s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
 s/nsRefPtr ?</RefPtr</g;   # handle declarations and variables
'

 # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h

 # Handle nsRefPtr.h itself, a couple places that define constructors
 # from nsRefPtr, and code generators specially.  We do this here, rather
 # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
 # things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
     mfbt/nsRefPtr.h \
     xpcom/glue/nsCOMPtr.h \
     xpcom/base/OwningNonNull.h \
     ipc/ipdl/ipdl/lower.py \
     ipc/ipdl/ipdl/builtin.py \
     dom/bindings/Codegen.py \
     python/lldbutils/lldbutils/utils.py

 # In our indiscriminate substitution above, we renamed
 # nsRefPtrGetterAddRefs, the class behind getter_AddRefs.  Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
    xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'

if [ -d .git ]; then
    git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
    hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi

--HG--
rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 01:24:48 -04:00

187 lines
5.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* 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 "CameraPreviewMediaStream.h"
#include "CameraCommon.h"
/**
* Maximum number of outstanding invalidates before we start to drop frames;
* if we hit this threshold, it is an indicator that the main thread is
* either very busy or the device is busy elsewhere (e.g. encoding or
* persisting video data).
*/
#define MAX_INVALIDATE_PENDING 4
using namespace mozilla::layers;
using namespace mozilla::dom;
namespace mozilla {
static const TrackID TRACK_VIDEO = 2;
void
FakeMediaStreamGraph::DispatchToMainThreadAfterStreamStateUpdate(already_AddRefed<nsIRunnable> aRunnable)
{
nsCOMPtr<nsIRunnable> task = aRunnable;
NS_DispatchToMainThread(task);
}
CameraPreviewMediaStream::CameraPreviewMediaStream(DOMMediaStream* aWrapper)
: MediaStream(aWrapper)
, mMutex("mozilla::camera::CameraPreviewMediaStream")
, mInvalidatePending(0)
, mDiscardedFrames(0)
, mRateLimit(false)
, mTrackCreated(false)
{
SetGraphImpl(
MediaStreamGraph::GetInstance(
MediaStreamGraph::SYSTEM_THREAD_DRIVER, AudioChannel::Normal));
mFakeMediaStreamGraph = new FakeMediaStreamGraph();
}
void
CameraPreviewMediaStream::AddAudioOutput(void* aKey)
{
}
void
CameraPreviewMediaStream::SetAudioOutputVolume(void* aKey, float aVolume)
{
}
void
CameraPreviewMediaStream::RemoveAudioOutput(void* aKey)
{
}
void
CameraPreviewMediaStream::AddVideoOutput(VideoFrameContainer* aContainer)
{
MutexAutoLock lock(mMutex);
RefPtr<VideoFrameContainer> container = aContainer;
AddVideoOutputImpl(container.forget());
}
void
CameraPreviewMediaStream::RemoveVideoOutput(VideoFrameContainer* aContainer)
{
MutexAutoLock lock(mMutex);
RemoveVideoOutputImpl(aContainer);
}
void
CameraPreviewMediaStream::AddListener(MediaStreamListener* aListener)
{
MutexAutoLock lock(mMutex);
MediaStreamListener* listener = *mListeners.AppendElement() = aListener;
listener->NotifyBlockingChanged(mFakeMediaStreamGraph, MediaStreamListener::UNBLOCKED);
listener->NotifyHasCurrentData(mFakeMediaStreamGraph);
}
void
CameraPreviewMediaStream::RemoveListener(MediaStreamListener* aListener)
{
MutexAutoLock lock(mMutex);
RefPtr<MediaStreamListener> listener(aListener);
mListeners.RemoveElement(aListener);
listener->NotifyEvent(mFakeMediaStreamGraph, MediaStreamListener::EVENT_REMOVED);
}
void
CameraPreviewMediaStream::OnPreviewStateChange(bool aActive)
{
if (aActive) {
MutexAutoLock lock(mMutex);
if (!mTrackCreated) {
mTrackCreated = true;
VideoSegment tmpSegment;
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
MediaStreamListener* l = mListeners[j];
l->NotifyQueuedTrackChanges(mFakeMediaStreamGraph, TRACK_VIDEO, 0,
MediaStreamListener::TRACK_EVENT_CREATED,
tmpSegment);
l->NotifyFinishedTrackCreation(mFakeMediaStreamGraph);
}
}
}
}
void
CameraPreviewMediaStream::Destroy()
{
MutexAutoLock lock(mMutex);
mMainThreadDestroyed = true;
DestroyImpl();
}
void
CameraPreviewMediaStream::Invalidate()
{
MutexAutoLock lock(mMutex);
--mInvalidatePending;
for (nsTArray<RefPtr<VideoFrameContainer> >::size_type i = 0; i < mVideoOutputs.Length(); ++i) {
VideoFrameContainer* output = mVideoOutputs[i];
output->Invalidate();
}
}
void
CameraPreviewMediaStream::RateLimit(bool aLimit)
{
mRateLimit = aLimit;
}
void
CameraPreviewMediaStream::SetCurrentFrame(const gfx::IntSize& aIntrinsicSize, Image* aImage)
{
{
MutexAutoLock lock(mMutex);
if (mInvalidatePending > 0) {
if (mRateLimit || mInvalidatePending > MAX_INVALIDATE_PENDING) {
++mDiscardedFrames;
DOM_CAMERA_LOGW("Discard preview frame %d, %d invalidation(s) pending",
mDiscardedFrames, mInvalidatePending);
return;
}
DOM_CAMERA_LOGI("Update preview frame, %d invalidation(s) pending",
mInvalidatePending);
}
mDiscardedFrames = 0;
TimeStamp now = TimeStamp::Now();
for (nsTArray<RefPtr<VideoFrameContainer> >::size_type i = 0; i < mVideoOutputs.Length(); ++i) {
VideoFrameContainer* output = mVideoOutputs[i];
output->SetCurrentFrame(aIntrinsicSize, aImage, now);
}
++mInvalidatePending;
}
nsCOMPtr<nsIRunnable> event =
NS_NewRunnableMethod(this, &CameraPreviewMediaStream::Invalidate);
NS_DispatchToMainThread(event);
}
void
CameraPreviewMediaStream::ClearCurrentFrame()
{
MutexAutoLock lock(mMutex);
for (nsTArray<RefPtr<VideoFrameContainer> >::size_type i = 0; i < mVideoOutputs.Length(); ++i) {
VideoFrameContainer* output = mVideoOutputs[i];
output->ClearCurrentFrame();
nsCOMPtr<nsIRunnable> event =
NS_NewRunnableMethod(output, &VideoFrameContainer::Invalidate);
NS_DispatchToMainThread(event);
}
}
} // namespace mozilla