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Diffstat (limited to '')
| -rw-r--r-- | dom/media/ipc/RemoteDecoderChild.cpp | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/dom/media/ipc/RemoteDecoderChild.cpp b/dom/media/ipc/RemoteDecoderChild.cpp new file mode 100644 index 0000000000..ff36f0ff1f --- /dev/null +++ b/dom/media/ipc/RemoteDecoderChild.cpp @@ -0,0 +1,315 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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 "RemoteDecoderChild.h" + +#include "RemoteDecoderManagerChild.h" + +#include "mozilla/RemoteDecodeUtils.h" + +namespace mozilla { + +RemoteDecoderChild::RemoteDecoderChild(RemoteDecodeIn aLocation) + : ShmemRecycleAllocator(this), + mLocation(aLocation), + mThread(GetCurrentSerialEventTarget()) { + MOZ_DIAGNOSTIC_ASSERT( + RemoteDecoderManagerChild::GetManagerThread() && + RemoteDecoderManagerChild::GetManagerThread()->IsOnCurrentThread(), + "Must be created on the manager thread"); +} + +RemoteDecoderChild::~RemoteDecoderChild() = default; + +void RemoteDecoderChild::HandleRejectionError( + const ipc::ResponseRejectReason& aReason, + std::function<void(const MediaResult&)>&& aCallback) { + // If the channel goes down and CanSend() returns false, the IPDL promise will + // be rejected with SendError rather than ActorDestroyed. Both means the same + // thing and we can consider that the parent has crashed. The child can no + // longer be used. + // + + // The GPU/RDD process crashed. + if (mLocation == RemoteDecodeIn::GpuProcess) { + // The GPU process will get automatically restarted by the parent process. + // Once it has been restarted the ContentChild will receive the message and + // will call GetManager()->InitForGPUProcess. + // We defer reporting an error until we've recreated the RemoteDecoder + // manager so that it'll be safe for MediaFormatReader to recreate decoders + RefPtr<RemoteDecoderChild> self = this; + GetManager()->RunWhenGPUProcessRecreated(NS_NewRunnableFunction( + "RemoteDecoderChild::HandleRejectionError", + [self, callback = std::move(aCallback)]() { + MediaResult error( + NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_RDD_OR_GPU_ERR, + __func__); + callback(error); + })); + return; + } + + nsresult err = NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_UTILITY_ERR; + if (mLocation == RemoteDecodeIn::GpuProcess || + mLocation == RemoteDecodeIn::RddProcess) { + err = NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_RDD_OR_GPU_ERR; + } else if (mLocation == RemoteDecodeIn::UtilityProcess_MFMediaEngineCDM) { + err = NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_MF_CDM_ERR; + } + // The RDD process is restarted on demand and asynchronously, we can + // immediately inform the caller that a new decoder is needed. The RDD will + // then be restarted during the new decoder creation by + aCallback(MediaResult(err, __func__)); +} + +// ActorDestroy is called if the channel goes down while waiting for a response. +void RemoteDecoderChild::ActorDestroy(ActorDestroyReason aWhy) { + mRemoteDecoderCrashed = (aWhy == AbnormalShutdown); + mDecodedData.Clear(); + CleanupShmemRecycleAllocator(); + RecordShutdownTelemetry(mRemoteDecoderCrashed); +} + +void RemoteDecoderChild::DestroyIPDL() { + AssertOnManagerThread(); + MOZ_DIAGNOSTIC_ASSERT(mInitPromise.IsEmpty() && mDecodePromise.IsEmpty() && + mDrainPromise.IsEmpty() && + mFlushPromise.IsEmpty() && + mShutdownPromise.IsEmpty(), + "All promises should have been rejected"); + if (CanSend()) { + PRemoteDecoderChild::Send__delete__(this); + } +} + +void RemoteDecoderChild::IPDLActorDestroyed() { mIPDLSelfRef = nullptr; } + +// MediaDataDecoder methods + +RefPtr<MediaDataDecoder::InitPromise> RemoteDecoderChild::Init() { + AssertOnManagerThread(); + + mRemoteDecoderCrashed = false; + + RefPtr<RemoteDecoderChild> self = this; + SendInit() + ->Then( + mThread, __func__, + [self, this](InitResultIPDL&& aResponse) { + mInitPromiseRequest.Complete(); + if (aResponse.type() == InitResultIPDL::TMediaResult) { + mInitPromise.Reject(aResponse.get_MediaResult(), __func__); + return; + } + const auto& initResponse = aResponse.get_InitCompletionIPDL(); + mDescription = initResponse.decoderDescription(); + mDescription.Append(" ("); + mDescription.Append(RemoteDecodeInToStr(GetManager()->Location())); + mDescription.Append(" remote)"); + + mProcessName = initResponse.decoderProcessName(); + mCodecName = initResponse.decoderCodecName(); + + mIsHardwareAccelerated = initResponse.hardware(); + mHardwareAcceleratedReason = initResponse.hardwareReason(); + mConversion = initResponse.conversion(); + // Either the promise has not yet been resolved or the handler has + // been disconnected and we can't get here. + mInitPromise.Resolve(initResponse.type(), __func__); + }, + [self](const mozilla::ipc::ResponseRejectReason& aReason) { + self->mInitPromiseRequest.Complete(); + self->HandleRejectionError( + aReason, [self](const MediaResult& aError) { + self->mInitPromise.RejectIfExists(aError, __func__); + }); + }) + ->Track(mInitPromiseRequest); + + return mInitPromise.Ensure(__func__); +} + +RefPtr<MediaDataDecoder::DecodePromise> RemoteDecoderChild::Decode( + const nsTArray<RefPtr<MediaRawData>>& aSamples) { + AssertOnManagerThread(); + + if (mRemoteDecoderCrashed) { + nsresult err = NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_UTILITY_ERR; + if (mLocation == RemoteDecodeIn::GpuProcess || + mLocation == RemoteDecodeIn::RddProcess) { + err = NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_RDD_OR_GPU_ERR; + } else if (mLocation == RemoteDecodeIn::UtilityProcess_MFMediaEngineCDM) { + err = NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_MF_CDM_ERR; + } + return MediaDataDecoder::DecodePromise::CreateAndReject(err, __func__); + } + + auto samples = MakeRefPtr<ArrayOfRemoteMediaRawData>(); + if (!samples->Fill(aSamples, + [&](size_t aSize) { return AllocateBuffer(aSize); })) { + return MediaDataDecoder::DecodePromise::CreateAndReject( + NS_ERROR_OUT_OF_MEMORY, __func__); + } + SendDecode(samples)->Then( + mThread, __func__, + [self = RefPtr{this}, this]( + PRemoteDecoderChild::DecodePromise::ResolveOrRejectValue&& aValue) { + // We no longer need the samples as the data has been + // processed by the parent. + // If the parent died, the error being fatal will cause the + // decoder to be torn down and all shmem in the pool will be + // deallocated. + ReleaseAllBuffers(); + + if (aValue.IsReject()) { + HandleRejectionError( + aValue.RejectValue(), [self](const MediaResult& aError) { + self->mDecodePromise.RejectIfExists(aError, __func__); + }); + return; + } + MOZ_DIAGNOSTIC_ASSERT(CanSend(), + "The parent unexpectedly died, promise should " + "have been rejected first"); + if (mDecodePromise.IsEmpty()) { + // We got flushed. + return; + } + auto response = std::move(aValue.ResolveValue()); + if (response.type() == DecodeResultIPDL::TMediaResult && + NS_FAILED(response.get_MediaResult())) { + mDecodePromise.Reject(response.get_MediaResult(), __func__); + return; + } + if (response.type() == DecodeResultIPDL::TDecodedOutputIPDL) { + ProcessOutput(std::move(response.get_DecodedOutputIPDL())); + } + mDecodePromise.Resolve(std::move(mDecodedData), __func__); + mDecodedData = MediaDataDecoder::DecodedData(); + }); + + return mDecodePromise.Ensure(__func__); +} + +RefPtr<MediaDataDecoder::FlushPromise> RemoteDecoderChild::Flush() { + AssertOnManagerThread(); + mDecodePromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__); + mDrainPromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__); + + RefPtr<RemoteDecoderChild> self = this; + SendFlush()->Then( + mThread, __func__, + [self](const MediaResult& aResult) { + if (NS_SUCCEEDED(aResult)) { + self->mFlushPromise.ResolveIfExists(true, __func__); + } else { + self->mFlushPromise.RejectIfExists(aResult, __func__); + } + }, + [self](const mozilla::ipc::ResponseRejectReason& aReason) { + self->HandleRejectionError(aReason, [self](const MediaResult& aError) { + self->mFlushPromise.RejectIfExists(aError, __func__); + }); + }); + return mFlushPromise.Ensure(__func__); +} + +RefPtr<MediaDataDecoder::DecodePromise> RemoteDecoderChild::Drain() { + AssertOnManagerThread(); + + RefPtr<RemoteDecoderChild> self = this; + SendDrain()->Then( + mThread, __func__, + [self, this](DecodeResultIPDL&& aResponse) { + if (mDrainPromise.IsEmpty()) { + // We got flushed. + return; + } + if (aResponse.type() == DecodeResultIPDL::TMediaResult && + NS_FAILED(aResponse.get_MediaResult())) { + mDrainPromise.Reject(aResponse.get_MediaResult(), __func__); + return; + } + MOZ_DIAGNOSTIC_ASSERT(CanSend(), + "The parent unexpectedly died, promise should " + "have been rejected first"); + if (aResponse.type() == DecodeResultIPDL::TDecodedOutputIPDL) { + ProcessOutput(std::move(aResponse.get_DecodedOutputIPDL())); + } + mDrainPromise.Resolve(std::move(mDecodedData), __func__); + mDecodedData = MediaDataDecoder::DecodedData(); + }, + [self](const mozilla::ipc::ResponseRejectReason& aReason) { + self->HandleRejectionError(aReason, [self](const MediaResult& aError) { + self->mDrainPromise.RejectIfExists(aError, __func__); + }); + }); + return mDrainPromise.Ensure(__func__); +} + +RefPtr<mozilla::ShutdownPromise> RemoteDecoderChild::Shutdown() { + AssertOnManagerThread(); + // Shutdown() can be called while an InitPromise is pending. + mInitPromiseRequest.DisconnectIfExists(); + mInitPromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__); + mDecodePromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__); + mDrainPromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__); + mFlushPromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__); + + RefPtr<RemoteDecoderChild> self = this; + SendShutdown()->Then( + mThread, __func__, + [self]( + PRemoteDecoderChild::ShutdownPromise::ResolveOrRejectValue&& aValue) { + self->mShutdownPromise.Resolve(aValue.IsResolve(), __func__); + }); + return mShutdownPromise.Ensure(__func__); +} + +bool RemoteDecoderChild::IsHardwareAccelerated( + nsACString& aFailureReason) const { + AssertOnManagerThread(); + aFailureReason = mHardwareAcceleratedReason; + return mIsHardwareAccelerated; +} + +nsCString RemoteDecoderChild::GetDescriptionName() const { + AssertOnManagerThread(); + return mDescription; +} + +nsCString RemoteDecoderChild::GetProcessName() const { + AssertOnManagerThread(); + return mProcessName; +} + +nsCString RemoteDecoderChild::GetCodecName() const { + AssertOnManagerThread(); + return mCodecName; +} + +void RemoteDecoderChild::SetSeekThreshold(const media::TimeUnit& aTime) { + AssertOnManagerThread(); + Unused << SendSetSeekThreshold(aTime); +} + +MediaDataDecoder::ConversionRequired RemoteDecoderChild::NeedsConversion() + const { + AssertOnManagerThread(); + return mConversion; +} + +void RemoteDecoderChild::AssertOnManagerThread() const { + MOZ_ASSERT(mThread->IsOnCurrentThread()); +} + +RemoteDecoderManagerChild* RemoteDecoderChild::GetManager() { + if (!CanSend()) { + return nullptr; + } + return static_cast<RemoteDecoderManagerChild*>(Manager()); +} + +} // namespace mozilla |