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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 "mozilla/dom/MediaKeySession.h"
namespace mozilla {
/* static */
bool WMFCDMImpl::Supports(const nsAString& aKeySystem) {
static std::map<nsString, bool> supports;
nsString key(aKeySystem);
if (const auto& s = supports.find(key); s != supports.end()) {
return s->second;
}
RefPtr<WMFCDMImpl> cdm = MakeRefPtr<WMFCDMImpl>(aKeySystem);
KeySystemConfig c;
bool s = cdm->GetCapabilities(c);
supports[key] = s;
return s;
}
static void MFCDMCapabilitiesIPDLToKeySystemConfig(
const MFCDMCapabilitiesIPDL& aCDMConfig,
KeySystemConfig& aKeySystemConfig) {
aKeySystemConfig.mKeySystem = aCDMConfig.keySystem();
for (const auto& type : aCDMConfig.initDataTypes()) {
aKeySystemConfig.mInitDataTypes.AppendElement(type);
}
for (const auto& type : aCDMConfig.sessionTypes()) {
aKeySystemConfig.mSessionTypes.AppendElement(type);
}
for (const auto& c : aCDMConfig.videoCapabilities()) {
if (!c.robustness().IsEmpty() &&
!aKeySystemConfig.mVideoRobustness.Contains(c.robustness())) {
aKeySystemConfig.mVideoRobustness.AppendElement(c.robustness());
}
aKeySystemConfig.mMP4.SetCanDecryptAndDecode(
NS_ConvertUTF16toUTF8(c.contentType()));
}
for (const auto& c : aCDMConfig.audioCapabilities()) {
if (!c.robustness().IsEmpty() &&
!aKeySystemConfig.mAudioRobustness.Contains(c.robustness())) {
aKeySystemConfig.mAudioRobustness.AppendElement(c.robustness());
}
aKeySystemConfig.mMP4.SetCanDecryptAndDecode(
NS_ConvertUTF16toUTF8(c.contentType()));
}
aKeySystemConfig.mPersistentState = aCDMConfig.persistentState();
aKeySystemConfig.mDistinctiveIdentifier = aCDMConfig.distinctiveID();
}
static const char* EncryptionSchemeStr(const CryptoScheme aScheme) {
switch (aScheme) {
case CryptoScheme::None:
return "none";
case CryptoScheme::Cenc:
return "cenc";
case CryptoScheme::Cbcs:
return "cbcs";
}
}
bool WMFCDMImpl::GetCapabilities(KeySystemConfig& aConfig) {
nsCOMPtr<nsISerialEventTarget> backgroundTaskQueue;
NS_CreateBackgroundTaskQueue(__func__, getter_AddRefs(backgroundTaskQueue));
bool ok = false;
media::Await(
backgroundTaskQueue.forget(), mCDM->GetCapabilities(),
[&ok, &aConfig](const MFCDMCapabilitiesIPDL& capabilities) {
EME_LOG("capabilities: keySystem=%s",
NS_ConvertUTF16toUTF8(capabilities.keySystem()).get());
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));
}
MFCDMCapabilitiesIPDLToKeySystemConfig(capabilities, aConfig);
ok = true;
},
[](nsresult rv) {
EME_LOG("Fail to get key system capabilities. rv=%x", rv);
});
return ok;
}
RefPtr<WMFCDMImpl::InitPromise> WMFCDMImpl::Init(
const WMFCDMImpl::InitParams& aParams) {
MOZ_ASSERT(mCDM);
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.mHWSecure, 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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