зеркало из https://github.com/mozilla/gecko-dev.git
526 строки
14 KiB
C++
526 строки
14 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "MediaEngineDefault.h"
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#include "nsCOMPtr.h"
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#include "mozilla/dom/File.h"
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#include "mozilla/UniquePtr.h"
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#include "nsIFile.h"
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#include "Layers.h"
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#include "ImageContainer.h"
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#include "ImageTypes.h"
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#include "nsContentUtils.h"
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#include "MediaStreamGraph.h"
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#include "nsIFilePicker.h"
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#include "nsIPrefService.h"
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#include "nsIPrefBranch.h"
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#ifdef MOZ_WIDGET_ANDROID
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#include "nsISupportsUtils.h"
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#endif
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#ifdef MOZ_WEBRTC
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#include "YuvStamper.h"
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#endif
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#define DEFAULT_AUDIO_TIMER_MS 10
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namespace mozilla {
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using namespace mozilla::gfx;
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NS_IMPL_ISUPPORTS(MediaEngineDefaultVideoSource, nsITimerCallback, nsINamed)
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/**
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* Default video source.
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*/
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MediaEngineDefaultVideoSource::MediaEngineDefaultVideoSource()
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#ifdef MOZ_WEBRTC
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: MediaEngineCameraVideoSource("FakeVideo.Monitor")
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#else
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: MediaEngineVideoSource()
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#endif
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, mTimer(nullptr)
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#ifndef MOZ_WEBRTC
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, mMonitor("Fake video")
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#endif
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, mCb(16), mCr(16)
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{
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mImageContainer =
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layers::LayerManager::CreateImageContainer(layers::ImageContainer::ASYNCHRONOUS);
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}
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MediaEngineDefaultVideoSource::~MediaEngineDefaultVideoSource()
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{}
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void
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MediaEngineDefaultVideoSource::GetName(nsAString& aName) const
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{
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aName.AssignLiteral(u"Default Video Device");
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}
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void
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MediaEngineDefaultVideoSource::GetUUID(nsACString& aUUID) const
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{
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aUUID.AssignLiteral("1041FCBD-3F12-4F7B-9E9B-1EC556DD5676");
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}
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uint32_t
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MediaEngineDefaultVideoSource::GetBestFitnessDistance(
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const nsTArray<const NormalizedConstraintSet*>& aConstraintSets,
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const nsString& aDeviceId) const
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{
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uint32_t distance = 0;
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#ifdef MOZ_WEBRTC
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for (const auto* cs : aConstraintSets) {
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distance = GetMinimumFitnessDistance(*cs, aDeviceId);
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break; // distance is read from first entry only
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}
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#endif
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return distance;
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}
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nsresult
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MediaEngineDefaultVideoSource::Allocate(const dom::MediaTrackConstraints &aConstraints,
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const MediaEnginePrefs &aPrefs,
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const nsString& aDeviceId,
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const mozilla::ipc::PrincipalInfo& aPrincipalInfo,
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AllocationHandle** aOutHandle,
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const char** aOutBadConstraint)
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{
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if (mState != kReleased) {
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return NS_ERROR_FAILURE;
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}
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FlattenedConstraints c(aConstraints);
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// Mock failure for automated tests.
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if (c.mDeviceId.mIdeal.find(NS_LITERAL_STRING("bad device")) !=
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c.mDeviceId.mIdeal.end()) {
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return NS_ERROR_FAILURE;
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}
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// emulator debug is very, very slow; reduce load on it with smaller/slower fake video
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mOpts = aPrefs;
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mOpts.mWidth = c.mWidth.Get(aPrefs.mWidth ? aPrefs.mWidth :
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#ifdef DEBUG
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MediaEngine::DEFAULT_43_VIDEO_WIDTH/2
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#else
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MediaEngine::DEFAULT_43_VIDEO_WIDTH
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#endif
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);
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mOpts.mHeight = c.mHeight.Get(aPrefs.mHeight ? aPrefs.mHeight :
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#ifdef DEBUG
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MediaEngine::DEFAULT_43_VIDEO_HEIGHT/2
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#else
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MediaEngine::DEFAULT_43_VIDEO_HEIGHT
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#endif
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);
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mOpts.mWidth = std::max(160, std::min(mOpts.mWidth, 4096));
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mOpts.mHeight = std::max(90, std::min(mOpts.mHeight, 2160));
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mState = kAllocated;
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*aOutHandle = nullptr;
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return NS_OK;
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}
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nsresult
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MediaEngineDefaultVideoSource::Deallocate(AllocationHandle* aHandle)
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{
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MOZ_ASSERT(!aHandle);
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if (mState != kStopped && mState != kAllocated) {
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return NS_ERROR_FAILURE;
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}
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mState = kReleased;
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mImage = nullptr;
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return NS_OK;
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}
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static void AllocateSolidColorFrame(layers::PlanarYCbCrData& aData,
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int aWidth, int aHeight,
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int aY, int aCb, int aCr)
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{
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MOZ_ASSERT(!(aWidth&1));
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MOZ_ASSERT(!(aHeight&1));
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// Allocate a single frame with a solid color
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int yLen = aWidth*aHeight;
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int cbLen = yLen>>2;
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int crLen = cbLen;
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uint8_t* frame = (uint8_t*) malloc(yLen+cbLen+crLen);
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memset(frame, aY, yLen);
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memset(frame+yLen, aCb, cbLen);
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memset(frame+yLen+cbLen, aCr, crLen);
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aData.mYChannel = frame;
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aData.mYSize = IntSize(aWidth, aHeight);
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aData.mYStride = aWidth;
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aData.mCbCrStride = aWidth>>1;
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aData.mCbChannel = frame + yLen;
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aData.mCrChannel = aData.mCbChannel + cbLen;
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aData.mCbCrSize = IntSize(aWidth>>1, aHeight>>1);
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aData.mPicX = 0;
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aData.mPicY = 0;
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aData.mPicSize = IntSize(aWidth, aHeight);
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aData.mStereoMode = StereoMode::MONO;
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}
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static void ReleaseFrame(layers::PlanarYCbCrData& aData)
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{
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free(aData.mYChannel);
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}
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nsresult
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MediaEngineDefaultVideoSource::Start(SourceMediaStream* aStream, TrackID aID,
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const PrincipalHandle& aPrincipalHandle)
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{
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if (mState != kAllocated) {
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return NS_ERROR_FAILURE;
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}
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mTimer = NS_NewTimer();
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if (!mTimer) {
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return NS_ERROR_FAILURE;
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}
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aStream->AddTrack(aID, 0, new VideoSegment(), SourceMediaStream::ADDTRACK_QUEUED);
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// Remember TrackID so we can end it later
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mTrackID = aID;
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// Start timer for subsequent frames
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#if defined(MOZ_WIDGET_ANDROID) && defined(DEBUG)
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// emulator debug is very, very slow and has problems dealing with realtime audio inputs
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mTimer->InitWithCallback(this, (1000 / mOpts.mFPS)*10, nsITimer::TYPE_REPEATING_SLACK);
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#else
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mTimer->InitWithCallback(this, 1000 / mOpts.mFPS, nsITimer::TYPE_REPEATING_SLACK);
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#endif
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mState = kStarted;
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return NS_OK;
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}
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nsresult
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MediaEngineDefaultVideoSource::Stop(SourceMediaStream *aSource, TrackID aID)
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{
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if (mState != kStarted) {
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return NS_ERROR_FAILURE;
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}
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if (!mTimer) {
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return NS_ERROR_FAILURE;
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}
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mTimer->Cancel();
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mTimer = nullptr;
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aSource->EndTrack(aID);
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mState = kStopped;
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mImage = nullptr;
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return NS_OK;
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}
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nsresult
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MediaEngineDefaultVideoSource::Restart(
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AllocationHandle* aHandle,
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const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs &aPrefs,
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const nsString& aDeviceId,
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const char** aOutBadConstraint)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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MediaEngineDefaultVideoSource::Notify(nsITimer* aTimer)
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{
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// Update the target color
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if (mCr <= 16) {
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if (mCb < 240) {
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mCb++;
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} else {
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mCr++;
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}
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} else if (mCb >= 240) {
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if (mCr < 240) {
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mCr++;
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} else {
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mCb--;
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}
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} else if (mCr >= 240) {
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if (mCb > 16) {
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mCb--;
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} else {
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mCr--;
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}
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} else {
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mCr--;
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}
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// Allocate a single solid color image
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RefPtr<layers::PlanarYCbCrImage> ycbcr_image = mImageContainer->CreatePlanarYCbCrImage();
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layers::PlanarYCbCrData data;
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AllocateSolidColorFrame(data, mOpts.mWidth, mOpts.mHeight, 0x80, mCb, mCr);
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#ifdef MOZ_WEBRTC
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uint64_t timestamp = PR_Now();
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YuvStamper::Encode(mOpts.mWidth, mOpts.mHeight, mOpts.mWidth,
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data.mYChannel,
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reinterpret_cast<unsigned char*>(×tamp), sizeof(timestamp),
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0, 0);
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#endif
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bool setData = ycbcr_image->CopyData(data);
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MOZ_ASSERT(setData);
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// SetData copies data, so we can free the frame
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ReleaseFrame(data);
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if (!setData) {
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return NS_ERROR_FAILURE;
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}
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MonitorAutoLock lock(mMonitor);
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// implicitly releases last image
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mImage = ycbcr_image.forget();
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return NS_OK;
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}
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NS_IMETHODIMP
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MediaEngineDefaultVideoSource::GetName(nsACString& aName)
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{
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aName.AssignLiteral("MediaEngineDefaultVideoSource");
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return NS_OK;
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}
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void
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MediaEngineDefaultVideoSource::NotifyPull(MediaStreamGraph* aGraph,
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SourceMediaStream *aSource,
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TrackID aID,
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StreamTime aDesiredTime,
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const PrincipalHandle& aPrincipalHandle)
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{
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// AddTrack takes ownership of segment
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VideoSegment segment;
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MonitorAutoLock lock(mMonitor);
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if (mState != kStarted) {
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return;
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}
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// Note: we're not giving up mImage here
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RefPtr<layers::Image> image = mImage;
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StreamTime delta = aDesiredTime - aSource->GetEndOfAppendedData(aID);
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if (delta > 0) {
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// nullptr images are allowed
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IntSize size(image ? mOpts.mWidth : 0, image ? mOpts.mHeight : 0);
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segment.AppendFrame(image.forget(), delta, size, aPrincipalHandle);
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// This can fail if either a) we haven't added the track yet, or b)
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// we've removed or finished the track.
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aSource->AppendToTrack(aID, &segment);
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}
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}
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/**
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* Default audio source.
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*/
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NS_IMPL_ISUPPORTS0(MediaEngineDefaultAudioSource)
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MediaEngineDefaultAudioSource::MediaEngineDefaultAudioSource()
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: MediaEngineAudioSource(kReleased)
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, mLastNotify(0)
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, mFreq(1000)
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{}
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MediaEngineDefaultAudioSource::~MediaEngineDefaultAudioSource()
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{}
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void
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MediaEngineDefaultAudioSource::GetName(nsAString& aName) const
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{
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aName.AssignLiteral(u"Default Audio Device");
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}
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void
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MediaEngineDefaultAudioSource::GetUUID(nsACString& aUUID) const
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{
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aUUID.AssignLiteral("B7CBD7C1-53EF-42F9-8353-73F61C70C092");
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}
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uint32_t
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MediaEngineDefaultAudioSource::GetBestFitnessDistance(
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const nsTArray<const NormalizedConstraintSet*>& aConstraintSets,
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const nsString& aDeviceId) const
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{
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uint32_t distance = 0;
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#ifdef MOZ_WEBRTC
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for (const auto* cs : aConstraintSets) {
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distance = GetMinimumFitnessDistance(*cs, aDeviceId);
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break; // distance is read from first entry only
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}
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#endif
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return distance;
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}
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nsresult
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MediaEngineDefaultAudioSource::Allocate(const dom::MediaTrackConstraints &aConstraints,
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const MediaEnginePrefs &aPrefs,
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const nsString& aDeviceId,
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const mozilla::ipc::PrincipalInfo& aPrincipalInfo,
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AllocationHandle** aOutHandle,
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const char** aOutBadConstraint)
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{
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if (mState != kReleased) {
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return NS_ERROR_FAILURE;
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}
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// Mock failure for automated tests.
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if (aConstraints.mDeviceId.IsString() &&
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aConstraints.mDeviceId.GetAsString().EqualsASCII("bad device")) {
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return NS_ERROR_FAILURE;
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}
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mFreq = aPrefs.mFreq ? aPrefs.mFreq : 1000;
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mState = kAllocated;
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*aOutHandle = nullptr;
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return NS_OK;
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}
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nsresult
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MediaEngineDefaultAudioSource::Deallocate(AllocationHandle* aHandle)
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{
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MOZ_ASSERT(!aHandle);
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if (mState != kStopped && mState != kAllocated) {
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return NS_ERROR_FAILURE;
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}
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mState = kReleased;
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return NS_OK;
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}
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nsresult
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MediaEngineDefaultAudioSource::Start(SourceMediaStream* aStream, TrackID aID,
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const PrincipalHandle& aPrincipalHandle)
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{
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if (mState != kAllocated) {
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return NS_ERROR_FAILURE;
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}
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if (!mSineGenerator) {
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// generate sine wave (default 1KHz)
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mSineGenerator = new SineWaveGenerator(aStream->GraphRate(), mFreq);
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}
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// AddTrack will take ownership of segment
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AudioSegment* segment = new AudioSegment();
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aStream->AddAudioTrack(aID, aStream->GraphRate(), 0, segment, SourceMediaStream::ADDTRACK_QUEUED);
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// Remember TrackID so we can finish later
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mTrackID = aID;
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mLastNotify = 0;
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mState = kStarted;
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return NS_OK;
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}
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nsresult
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MediaEngineDefaultAudioSource::Stop(SourceMediaStream *aSource, TrackID aID)
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{
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if (mState != kStarted) {
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return NS_ERROR_FAILURE;
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}
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aSource->EndTrack(aID);
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mState = kStopped;
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return NS_OK;
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}
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nsresult
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MediaEngineDefaultAudioSource::Restart(AllocationHandle* aHandle,
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const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs &aPrefs,
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const nsString& aDeviceId,
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const char** aOutBadConstraint)
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{
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return NS_OK;
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}
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void
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MediaEngineDefaultAudioSource::AppendToSegment(AudioSegment& aSegment,
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TrackTicks aSamples,
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const PrincipalHandle& aPrincipalHandle)
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{
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RefPtr<SharedBuffer> buffer = SharedBuffer::Create(aSamples * sizeof(int16_t));
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int16_t* dest = static_cast<int16_t*>(buffer->Data());
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mSineGenerator->generate(dest, aSamples);
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AutoTArray<const int16_t*,1> channels;
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channels.AppendElement(dest);
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aSegment.AppendFrames(buffer.forget(), channels, aSamples, aPrincipalHandle);
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}
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void
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MediaEngineDefaultAudioSource::NotifyPull(MediaStreamGraph* aGraph,
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SourceMediaStream *aSource,
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TrackID aID,
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StreamTime aDesiredTime,
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const PrincipalHandle& aPrincipalHandle)
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{
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MOZ_ASSERT(aID == mTrackID);
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AudioSegment segment;
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// avoid accumulating rounding errors
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TrackTicks desired = aSource->TimeToTicksRoundUp(aGraph->GraphRate(), aDesiredTime);
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TrackTicks delta = desired - mLastNotify;
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mLastNotify += delta;
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AppendToSegment(segment, delta, aPrincipalHandle);
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aSource->AppendToTrack(mTrackID, &segment);
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}
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void
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MediaEngineDefault::EnumerateVideoDevices(dom::MediaSourceEnum aMediaSource,
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nsTArray<RefPtr<MediaEngineVideoSource> >* aVSources) {
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MutexAutoLock lock(mMutex);
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// only supports camera sources (for now). See Bug 1038241
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if (aMediaSource != dom::MediaSourceEnum::Camera) {
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return;
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}
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// We once had code here to find a VideoSource with the same settings and re-use that.
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// This no longer is possible since the resolution is being set in Allocate().
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RefPtr<MediaEngineVideoSource> newSource = new MediaEngineDefaultVideoSource();
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mVSources.AppendElement(newSource);
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aVSources->AppendElement(newSource);
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}
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void
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MediaEngineDefault::EnumerateAudioDevices(dom::MediaSourceEnum aMediaSource,
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nsTArray<RefPtr<MediaEngineAudioSource> >* aASources) {
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MutexAutoLock lock(mMutex);
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int32_t len = mASources.Length();
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// aMediaSource is ignored for audio devices (for now).
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for (int32_t i = 0; i < len; i++) {
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RefPtr<MediaEngineAudioSource> source = mASources.ElementAt(i);
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if (source->IsAvailable()) {
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aASources->AppendElement(source);
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}
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}
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// All streams are currently busy, just make a new one.
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if (aASources->Length() == 0) {
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RefPtr<MediaEngineAudioSource> newSource =
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new MediaEngineDefaultAudioSource();
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mASources.AppendElement(newSource);
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aASources->AppendElement(newSource);
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}
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}
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} // namespace mozilla
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