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-rw-r--r--dom/media/ipc/RemoteDecoderChild.cpp315
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
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+++ b/dom/media/ipc/RemoteDecoderChild.cpp
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+/* -*- 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