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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 "KeySystemConfig.h"
#include "EMEUtils.h"
#include "GMPUtils.h"
#include "KeySystemNames.h"
#include "mozilla/StaticPrefs_media.h"
#ifdef XP_WIN
# include "WMFDecoderModule.h"
#endif
#ifdef MOZ_WIDGET_ANDROID
# include "AndroidDecoderModule.h"
# include "mozilla/java/MediaDrmProxyWrappers.h"
# include "nsMimeTypes.h"
#endif
#ifdef MOZ_WMF_CDM
# include "mediafoundation/WMFCDMImpl.h"
#endif
namespace mozilla {
/* static */
bool KeySystemConfig::Supports(const nsAString& aKeySystem) {
nsCString api = nsLiteralCString(CHROMIUM_CDM_API);
nsCString name = NS_ConvertUTF16toUTF8(aKeySystem);
if (HaveGMPFor(api, {name})) {
return true;
}
#ifdef MOZ_WIDGET_ANDROID
// Check if we can use MediaDrm for this keysystem.
if (mozilla::java::MediaDrmProxy::IsSchemeSupported(name)) {
return true;
}
#endif
#if MOZ_WMF_CDM
if (IsPlayReadyKeySystemAndSupported(aKeySystem) &&
WMFCDMImpl::Supports(aKeySystem)) {
return true;
}
#endif
return false;
}
/* static */
bool KeySystemConfig::GetConfig(const nsAString& aKeySystem,
KeySystemConfig& aConfig) {
if (!Supports(aKeySystem)) {
return false;
}
if (IsClearkeyKeySystem(aKeySystem)) {
aConfig.mKeySystem = aKeySystem;
aConfig.mInitDataTypes.AppendElement(u"cenc"_ns);
aConfig.mInitDataTypes.AppendElement(u"keyids"_ns);
aConfig.mInitDataTypes.AppendElement(u"webm"_ns);
aConfig.mPersistentState = Requirement::Optional;
aConfig.mDistinctiveIdentifier = Requirement::NotAllowed;
aConfig.mSessionTypes.AppendElement(SessionType::Temporary);
aConfig.mEncryptionSchemes.AppendElement(u"cenc"_ns);
aConfig.mEncryptionSchemes.AppendElement(u"cbcs"_ns);
aConfig.mEncryptionSchemes.AppendElement(u"cbcs-1-9"_ns);
if (StaticPrefs::media_clearkey_persistent_license_enabled()) {
aConfig.mSessionTypes.AppendElement(SessionType::PersistentLicense);
}
#if defined(XP_WIN)
// Clearkey CDM uses WMF's H.264 decoder on Windows.
if (WMFDecoderModule::CanCreateMFTDecoder(WMFStreamType::H264)) {
aConfig.mMP4.SetCanDecryptAndDecode(EME_CODEC_H264);
} else {
aConfig.mMP4.SetCanDecrypt(EME_CODEC_H264);
}
#else
aConfig.mMP4.SetCanDecrypt(EME_CODEC_H264);
#endif
aConfig.mMP4.SetCanDecrypt(EME_CODEC_AAC);
aConfig.mMP4.SetCanDecrypt(EME_CODEC_FLAC);
aConfig.mMP4.SetCanDecrypt(EME_CODEC_OPUS);
aConfig.mMP4.SetCanDecrypt(EME_CODEC_VP9);
aConfig.mWebM.SetCanDecrypt(EME_CODEC_VORBIS);
aConfig.mWebM.SetCanDecrypt(EME_CODEC_OPUS);
aConfig.mWebM.SetCanDecrypt(EME_CODEC_VP8);
aConfig.mWebM.SetCanDecrypt(EME_CODEC_VP9);
return true;
}
if (IsWidevineKeySystem(aKeySystem)) {
aConfig.mKeySystem = aKeySystem;
aConfig.mInitDataTypes.AppendElement(u"cenc"_ns);
aConfig.mInitDataTypes.AppendElement(u"keyids"_ns);
aConfig.mInitDataTypes.AppendElement(u"webm"_ns);
aConfig.mPersistentState = Requirement::Optional;
aConfig.mDistinctiveIdentifier = Requirement::NotAllowed;
aConfig.mSessionTypes.AppendElement(SessionType::Temporary);
#ifdef MOZ_WIDGET_ANDROID
aConfig.mSessionTypes.AppendElement(SessionType::PersistentLicense);
#endif
aConfig.mAudioRobustness.AppendElement(u"SW_SECURE_CRYPTO"_ns);
aConfig.mVideoRobustness.AppendElement(u"SW_SECURE_CRYPTO"_ns);
aConfig.mVideoRobustness.AppendElement(u"SW_SECURE_DECODE"_ns);
aConfig.mEncryptionSchemes.AppendElement(u"cenc"_ns);
aConfig.mEncryptionSchemes.AppendElement(u"cbcs"_ns);
aConfig.mEncryptionSchemes.AppendElement(u"cbcs-1-9"_ns);
#if defined(MOZ_WIDGET_ANDROID)
// MediaDrm.isCryptoSchemeSupported only allows passing
// "video/mp4" or "video/webm" for mimetype string.
// See
// https://developer.android.com/reference/android/media/MediaDrm.html#isCryptoSchemeSupported(java.util.UUID,
// java.lang.String) for more detail.
typedef struct {
const nsCString& mMimeType;
const nsCString& mEMECodecType;
const char16_t* mCodecType;
KeySystemConfig::ContainerSupport* mSupportType;
} DataForValidation;
DataForValidation validationList[] = {
{nsCString(VIDEO_MP4), EME_CODEC_H264, java::MediaDrmProxy::AVC,
&aConfig.mMP4},
{nsCString(VIDEO_MP4), EME_CODEC_VP9, java::MediaDrmProxy::AVC,
&aConfig.mMP4},
{nsCString(AUDIO_MP4), EME_CODEC_AAC, java::MediaDrmProxy::AAC,
&aConfig.mMP4},
{nsCString(AUDIO_MP4), EME_CODEC_FLAC, java::MediaDrmProxy::FLAC,
&aConfig.mMP4},
{nsCString(AUDIO_MP4), EME_CODEC_OPUS, java::MediaDrmProxy::OPUS,
&aConfig.mMP4},
{nsCString(VIDEO_WEBM), EME_CODEC_VP8, java::MediaDrmProxy::VP8,
&aConfig.mWebM},
{nsCString(VIDEO_WEBM), EME_CODEC_VP9, java::MediaDrmProxy::VP9,
&aConfig.mWebM},
{nsCString(AUDIO_WEBM), EME_CODEC_VORBIS, java::MediaDrmProxy::VORBIS,
&aConfig.mWebM},
{nsCString(AUDIO_WEBM), EME_CODEC_OPUS, java::MediaDrmProxy::OPUS,
&aConfig.mWebM},
};
for (const auto& data : validationList) {
if (java::MediaDrmProxy::IsCryptoSchemeSupported(kWidevineKeySystemName,
data.mMimeType)) {
if (AndroidDecoderModule::SupportsMimeType(data.mMimeType) !=
media::DecodeSupport::Unsupported) {
data.mSupportType->SetCanDecryptAndDecode(data.mEMECodecType);
} else {
data.mSupportType->SetCanDecrypt(data.mEMECodecType);
}
}
}
#else
# if defined(XP_WIN)
// Widevine CDM doesn't include an AAC decoder. So if WMF can't
// decode AAC, and a codec wasn't specified, be conservative
// and reject the MediaKeys request, since we assume Widevine
// will be used with AAC.
if (WMFDecoderModule::CanCreateMFTDecoder(WMFStreamType::AAC)) {
aConfig.mMP4.SetCanDecrypt(EME_CODEC_AAC);
}
# else
aConfig.mMP4.SetCanDecrypt(EME_CODEC_AAC);
# endif
aConfig.mMP4.SetCanDecrypt(EME_CODEC_FLAC);
aConfig.mMP4.SetCanDecrypt(EME_CODEC_OPUS);
aConfig.mMP4.SetCanDecryptAndDecode(EME_CODEC_H264);
aConfig.mMP4.SetCanDecryptAndDecode(EME_CODEC_VP9);
aConfig.mWebM.SetCanDecrypt(EME_CODEC_VORBIS);
aConfig.mWebM.SetCanDecrypt(EME_CODEC_OPUS);
aConfig.mWebM.SetCanDecryptAndDecode(EME_CODEC_VP8);
aConfig.mWebM.SetCanDecryptAndDecode(EME_CODEC_VP9);
#endif
return true;
}
#ifdef MOZ_WMF_CDM
if (IsPlayReadyKeySystemAndSupported(aKeySystem)) {
RefPtr<WMFCDMImpl> cdm = MakeRefPtr<WMFCDMImpl>(aKeySystem);
return cdm->GetCapabilities(aConfig);
}
#endif
return false;
}
KeySystemConfig::SessionType ConvertToKeySystemConfigSessionType(
dom::MediaKeySessionType aType) {
switch (aType) {
case dom::MediaKeySessionType::Temporary:
return KeySystemConfig::SessionType::Temporary;
case dom::MediaKeySessionType::Persistent_license:
return KeySystemConfig::SessionType::PersistentLicense;
default:
MOZ_ASSERT_UNREACHABLE("Invalid session type");
return KeySystemConfig::SessionType::Temporary;
}
}
const char* SessionTypeToStr(KeySystemConfig::SessionType aType) {
switch (aType) {
case KeySystemConfig::SessionType::Temporary:
return "Temporary";
case KeySystemConfig::SessionType::PersistentLicense:
return "PersistentLicense";
default:
MOZ_ASSERT_UNREACHABLE("Invalid session type");
return "Invalid";
}
}
} // namespace mozilla
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