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dom/camera/CameraPreviewMediaStream.cpp@97036ab72558 (annotated)

dom/camera/CameraPreviewMediaStream.cpp

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0	4	* You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	#include "CameraPreviewMediaStream.h"
michael@0	7
michael@0	8	using namespace mozilla::layers;
michael@0	9	using namespace mozilla::dom;
michael@0	10
michael@0	11	namespace mozilla {
michael@0	12
michael@0	13	CameraPreviewMediaStream::CameraPreviewMediaStream(DOMMediaStream* aWrapper)
michael@0	14	: MediaStream(aWrapper)
michael@0	15	, mMutex("mozilla::camera::CameraPreviewMediaStream")
michael@0	16	, mFrameCallback(nullptr)
michael@0	17	{
michael@0	18	SetGraphImpl(MediaStreamGraph::GetInstance());
michael@0	19	mIsConsumed = false;
michael@0	20	}
michael@0	21
michael@0	22	void
michael@0	23	CameraPreviewMediaStream::AddAudioOutput(void* aKey)
michael@0	24	{
michael@0	25	}
michael@0	26
michael@0	27	void
michael@0	28	CameraPreviewMediaStream::SetAudioOutputVolume(void* aKey, float aVolume)
michael@0	29	{
michael@0	30	}
michael@0	31
michael@0	32	void
michael@0	33	CameraPreviewMediaStream::RemoveAudioOutput(void* aKey)
michael@0	34	{
michael@0	35	}
michael@0	36
michael@0	37	void
michael@0	38	CameraPreviewMediaStream::AddVideoOutput(VideoFrameContainer* aContainer)
michael@0	39	{
michael@0	40	MutexAutoLock lock(mMutex);
michael@0	41	nsRefPtr<VideoFrameContainer> container = aContainer;
michael@0	42	AddVideoOutputImpl(container.forget());
michael@0	43
michael@0	44	if (mVideoOutputs.Length() > 1) {
michael@0	45	return;
michael@0	46	}
michael@0	47	MediaStreamGraph* gm = MediaStreamGraph::GetInstance();
michael@0	48	mIsConsumed = true;
michael@0	49	for (uint32_t j = 0; j < mListeners.Length(); ++j) {
michael@0	50	MediaStreamListener* l = mListeners[j];
michael@0	51	l->NotifyConsumptionChanged(gm, MediaStreamListener::CONSUMED);
michael@0	52	}
michael@0	53	}
michael@0	54
michael@0	55	void
michael@0	56	CameraPreviewMediaStream::RemoveVideoOutput(VideoFrameContainer* aContainer)
michael@0	57	{
michael@0	58	MutexAutoLock lock(mMutex);
michael@0	59	RemoveVideoOutputImpl(aContainer);
michael@0	60
michael@0	61	if (!mVideoOutputs.IsEmpty()) {
michael@0	62	return;
michael@0	63	}
michael@0	64	MediaStreamGraph* gm = MediaStreamGraph::GetInstance();
michael@0	65	mIsConsumed = false;
michael@0	66	for (uint32_t j = 0; j < mListeners.Length(); ++j) {
michael@0	67	MediaStreamListener* l = mListeners[j];
michael@0	68	l->NotifyConsumptionChanged(gm, MediaStreamListener::NOT_CONSUMED);
michael@0	69	}
michael@0	70	}
michael@0	71
michael@0	72	void
michael@0	73	CameraPreviewMediaStream::ChangeExplicitBlockerCount(int32_t aDelta)
michael@0	74	{
michael@0	75	}
michael@0	76
michael@0	77	void
michael@0	78	CameraPreviewMediaStream::AddListener(MediaStreamListener* aListener)
michael@0	79	{
michael@0	80	MutexAutoLock lock(mMutex);
michael@0	81
michael@0	82	MediaStreamGraph* gm = MediaStreamGraph::GetInstance();
michael@0	83	MediaStreamListener* listener = *mListeners.AppendElement() = aListener;
michael@0	84	listener->NotifyBlockingChanged(gm, MediaStreamListener::UNBLOCKED);
michael@0	85	}
michael@0	86
michael@0	87	void
michael@0	88	CameraPreviewMediaStream::RemoveListener(MediaStreamListener* aListener)
michael@0	89	{
michael@0	90	MutexAutoLock lock(mMutex);
michael@0	91
michael@0	92	MediaStreamGraph* gm = MediaStreamGraph::GetInstance();
michael@0	93	nsRefPtr<MediaStreamListener> listener(aListener);
michael@0	94	mListeners.RemoveElement(aListener);
michael@0	95	listener->NotifyRemoved(gm);
michael@0	96	}
michael@0	97
michael@0	98	void
michael@0	99	CameraPreviewMediaStream::Destroy()
michael@0	100	{
michael@0	101	MutexAutoLock lock(mMutex);
michael@0	102	DestroyImpl();
michael@0	103	}
michael@0	104
michael@0	105	void
michael@0	106	CameraPreviewMediaStream::SetCurrentFrame(const gfxIntSize& aIntrinsicSize, Image* aImage)
michael@0	107	{
michael@0	108	MutexAutoLock lock(mMutex);
michael@0	109
michael@0	110	TimeStamp now = TimeStamp::Now();
michael@0	111	for (uint32_t i = 0; i < mVideoOutputs.Length(); ++i) {
michael@0	112	VideoFrameContainer* output = mVideoOutputs[i];
michael@0	113	output->SetCurrentFrame(aIntrinsicSize, aImage, now);
michael@0	114	nsCOMPtr<nsIRunnable> event =
michael@0	115	NS_NewRunnableMethod(output, &VideoFrameContainer::Invalidate);
michael@0	116	NS_DispatchToMainThread(event, NS_DISPATCH_NORMAL);
michael@0	117	}
michael@0	118
michael@0	119	if (mFrameCallback) {
michael@0	120	mFrameCallback->OnNewFrame(aIntrinsicSize, aImage);
michael@0	121	}
michael@0	122	}
michael@0	123
michael@0	124	void
michael@0	125	CameraPreviewMediaStream::ClearCurrentFrame()
michael@0	126	{
michael@0	127	MutexAutoLock lock(mMutex);
michael@0	128
michael@0	129	for (uint32_t i = 0; i < mVideoOutputs.Length(); ++i) {
michael@0	130	VideoFrameContainer* output = mVideoOutputs[i];
michael@0	131	output->ClearCurrentFrame();
michael@0	132	nsCOMPtr<nsIRunnable> event =
michael@0	133	NS_NewRunnableMethod(output, &VideoFrameContainer::Invalidate);
michael@0	134	NS_DispatchToMainThread(event, NS_DISPATCH_NORMAL);
michael@0	135	}
michael@0	136	}
michael@0	137
michael@0	138	}