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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 "SamplesWaitingForKey.h"
#include "MediaData.h"
#include "MediaEventSource.h"
#include "mozilla/CDMCaps.h"
#include "mozilla/CDMProxy.h"
#include "mozilla/TaskQueue.h"
namespace mozilla {
SamplesWaitingForKey::SamplesWaitingForKey(
CDMProxy* aProxy, TrackInfo::TrackType aType,
const std::function<MediaEventProducer<TrackInfo::TrackType>*()>&
aOnWaitingForKeyEvent)
: mMutex("SamplesWaitingForKey"),
mProxy(aProxy),
mType(aType),
mOnWaitingForKeyEvent(aOnWaitingForKeyEvent) {}
SamplesWaitingForKey::~SamplesWaitingForKey() { Flush(); }
RefPtr<SamplesWaitingForKey::WaitForKeyPromise>
SamplesWaitingForKey::WaitIfKeyNotUsable(MediaRawData* aSample) {
if (!aSample || !aSample->mCrypto.IsEncrypted() || !mProxy) {
return WaitForKeyPromise::CreateAndResolve(aSample, __func__);
}
auto caps = mProxy->Capabilites().Lock();
const auto& keyid = aSample->mCrypto.mKeyId;
if (caps->IsKeyUsable(keyid)) {
return WaitForKeyPromise::CreateAndResolve(aSample, __func__);
}
SampleEntry entry;
entry.mSample = aSample;
RefPtr<WaitForKeyPromise> p = entry.mPromise.Ensure(__func__);
{
MutexAutoLock lock(mMutex);
mSamples.AppendElement(std::move(entry));
}
if (mOnWaitingForKeyEvent && mOnWaitingForKeyEvent()) {
mOnWaitingForKeyEvent()->Notify(mType);
}
caps->NotifyWhenKeyIdUsable(aSample->mCrypto.mKeyId, this);
return p;
}
void SamplesWaitingForKey::NotifyUsable(const CencKeyId& aKeyId) {
MutexAutoLock lock(mMutex);
size_t i = 0;
while (i < mSamples.Length()) {
auto& entry = mSamples[i];
if (aKeyId == entry.mSample->mCrypto.mKeyId) {
entry.mPromise.Resolve(entry.mSample, __func__);
mSamples.RemoveElementAt(i);
} else {
i++;
}
}
}
void SamplesWaitingForKey::Flush() {
MutexAutoLock lock(mMutex);
for (auto& sample : mSamples) {
sample.mPromise.Reject(true, __func__);
}
mSamples.Clear();
}
void SamplesWaitingForKey::BreakCycles() {
MutexAutoLock lock(mMutex);
mProxy = nullptr;
}
} // namespace mozilla
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