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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 "WMFCDMImpl.h"
#include <unordered_map>
#include "mozilla/AppShutdown.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/dom/MediaKeySession.h"
#include "mozilla/dom/KeySystemNames.h"
namespace mozilla {
bool WMFCDMImpl::GetCapabilities(bool aIsHardwareDecryption,
nsTArray<KeySystemConfig>& aOutConfigs) {
MOZ_ASSERT(NS_IsMainThread());
if (AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed)) {
return false;
}
static std::unordered_map<std::string, nsTArray<KeySystemConfig>>
sKeySystemConfigs{};
static bool sSetRunOnShutdown = false;
if (!sSetRunOnShutdown) {
GetMainThreadSerialEventTarget()->Dispatch(
NS_NewRunnableFunction("WMFCDMImpl::GetCapabilities", [&] {
RunOnShutdown([&] { sKeySystemConfigs.clear(); },
ShutdownPhase::XPCOMShutdown);
}));
sSetRunOnShutdown = true;
}
// Retrieve result from our cached key system
auto keySystem = std::string{NS_ConvertUTF16toUTF8(mKeySystem).get()};
if (auto rv = sKeySystemConfigs.find(keySystem);
rv != sKeySystemConfigs.end()) {
for (const auto& config : rv->second) {
if (IsHardwareDecryptionSupported(config) == aIsHardwareDecryption) {
EME_LOG("Return cached capabilities for %s (%s)", keySystem.c_str(),
NS_ConvertUTF16toUTF8(config.GetDebugInfo()).get());
aOutConfigs.AppendElement(config);
return true;
}
}
}
// Not cached result, ask the remote process.
nsCOMPtr<nsISerialEventTarget> backgroundTaskQueue;
NS_CreateBackgroundTaskQueue(__func__, getter_AddRefs(backgroundTaskQueue));
if (!mCDM) {
mCDM = MakeRefPtr<MFCDMChild>(mKeySystem);
}
bool ok = false;
media::Await(
do_AddRef(backgroundTaskQueue),
mCDM->GetCapabilities(aIsHardwareDecryption),
[&ok, &aOutConfigs, keySystem,
aIsHardwareDecryption](const MFCDMCapabilitiesIPDL& capabilities) {
EME_LOG("capabilities: keySystem=%s (hw-secure=%d)", keySystem.c_str(),
aIsHardwareDecryption);
for (const auto& v : capabilities.videoCapabilities()) {
EME_LOG("capabilities: video=%s",
NS_ConvertUTF16toUTF8(v.contentType()).get());
}
for (const auto& a : capabilities.audioCapabilities()) {
EME_LOG("capabilities: audio=%s",
NS_ConvertUTF16toUTF8(a.contentType()).get());
}
for (const auto& v : capabilities.encryptionSchemes()) {
EME_LOG("capabilities: encryptionScheme=%s", EncryptionSchemeStr(v));
}
KeySystemConfig* config = aOutConfigs.AppendElement();
MFCDMCapabilitiesIPDLToKeySystemConfig(capabilities, *config);
sKeySystemConfigs[keySystem].AppendElement(*config);
ok = true;
},
[](nsresult rv) {
EME_LOG("Fail to get key system capabilities. rv=%x", uint32_t(rv));
});
return ok;
}
RefPtr<WMFCDMImpl::InitPromise> WMFCDMImpl::Init(
const WMFCDMImpl::InitParams& aParams) {
if (!mCDM) {
mCDM = MakeRefPtr<MFCDMChild>(mKeySystem);
}
RefPtr<WMFCDMImpl> self = this;
mCDM->Init(aParams.mOrigin, aParams.mInitDataTypes,
aParams.mPersistentStateRequired
? KeySystemConfig::Requirement::Required
: KeySystemConfig::Requirement::Optional,
aParams.mDistinctiveIdentifierRequired
? KeySystemConfig::Requirement::Required
: KeySystemConfig::Requirement::Optional,
aParams.mAudioCapabilities, aParams.mVideoCapabilities,
aParams.mProxyCallback)
->Then(
mCDM->ManagerThread(), __func__,
[self, this](const MFCDMInitIPDL& init) {
mInitPromiseHolder.ResolveIfExists(true, __func__);
},
[self, this](const nsresult rv) {
mInitPromiseHolder.RejectIfExists(rv, __func__);
});
return mInitPromiseHolder.Ensure(__func__);
}
} // namespace mozilla
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