64 lines
2 KiB
C++
64 lines
2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GMPPlatform_h_
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#define GMPPlatform_h_
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#include "mozilla/RefPtr.h"
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#include "gmp-platform.h"
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#include <functional>
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#include "mozilla/gmp/PGMPChild.h"
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namespace mozilla {
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#ifdef XP_WIN
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struct ModulePaths;
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#endif
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namespace ipc {
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class ByteBuf;
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} // namespace ipc
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namespace gmp {
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class GMPChild;
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void InitPlatformAPI(GMPPlatformAPI& aPlatformAPI, GMPChild* aChild);
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void ShutdownPlatformAPI();
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GMPErr RunOnMainThread(GMPTask* aTask);
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GMPTask* NewGMPTask(std::function<void()>&& aFunction);
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GMPErr SetTimerOnMainThread(GMPTask* aTask, int64_t aTimeoutMS);
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/**
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* This is intended to be used by encoders/decoders that will make a GMP call
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* that is a synchronous post to the GMP worker thread. Because the GMP worker
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* threads can synchronously callback to the main thread, this has the potential
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* for a deadlock. If the encoder/decoder tracks any outstanding requests that
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* will result in a synchronous callback to the main thread, we can simply spin
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* the event loop on those callbacks until they are completed. Then we can
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* safefully make our own synchronous call to the GMP worker thread without fear
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* of a deadlock.
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*
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* Note that each encoder/decoder has its own worker thread, so assuming we
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* drain the synchronous events for that specific encoder/decoder, we know there
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* are no more forthcoming to cause us to deadlock.
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*/
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using SpinPendingPredicate = std::function<bool()>;
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bool SpinPendingGmpEventsUntil(const SpinPendingPredicate& aPred,
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uint32_t aTimeoutMs);
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void SendFOGData(ipc::ByteBuf&& buf);
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#ifdef XP_WIN
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RefPtr<PGMPChild::GetModulesTrustPromise> SendGetModulesTrust(
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ModulePaths&& aModules, bool aRunNormal);
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#endif
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} // namespace gmp
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} // namespace mozilla
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#endif // GMPPlatform_h_
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