tor-browser

MediaDrmCDMProxy.h (6579B)

---

/* -*- 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/. */

#ifndef MediaDrmCDMProxy_h_
#define MediaDrmCDMProxy_h_

#include <jni.h>

#include "MediaCodec.h"
#include "mozilla/CDMCaps.h"
#include "mozilla/CDMProxy.h"
#include "mozilla/MediaDrmProxySupport.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/MediaKeySession.h"
#include "mozilla/dom/MediaKeys.h"
#include "mozilla/jni/Types.h"
#include "nsString.h"

namespace mozilla {

class MediaDrmCDMCallbackProxy;
class MediaDrmCDMProxy final : public CDMProxy {
public:
 NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaDrmCDMProxy, override)

 MediaDrmCDMProxy(dom::MediaKeys* aKeys, const nsAString& aKeySystem,
                  bool aDistinctiveIdentifierRequired,
                  bool aPersistentStateRequired);

 void Init(PromiseId aPromiseId, const nsAString& aOrigin,
           const nsAString& aTopLevelOrigin,
           const nsAString& aGMPName) override;

 void CreateSession(uint32_t aCreateSessionToken,
                    dom::MediaKeySessionType aSessionType,
                    PromiseId aPromiseId, const nsAString& aInitDataType,
                    nsTArray<uint8_t>& aInitData) override;

 void LoadSession(PromiseId aPromiseId, dom::MediaKeySessionType aSessionType,
                  const nsAString& aSessionId) override;

 void SetServerCertificate(PromiseId aPromiseId,
                           nsTArray<uint8_t>& aCert) override;

 void UpdateSession(const nsAString& aSessionId, PromiseId aPromiseId,
                    nsTArray<uint8_t>& aResponse) override;

 void CloseSession(const nsAString& aSessionId, PromiseId aPromiseId) override;

 void RemoveSession(const nsAString& aSessionId,
                    PromiseId aPromiseId) override;

 void QueryOutputProtectionStatus() override;

 void NotifyOutputProtectionStatus(
     OutputProtectionCheckStatus aCheckStatus,
     OutputProtectionCaptureStatus aCaptureStatus) override;

 void Shutdown() override;

 void Terminated() override;

 void OnSetSessionId(uint32_t aCreateSessionToken,
                     const nsAString& aSessionId) override;

 void OnResolveLoadSessionPromise(uint32_t aPromiseId, bool aSuccess) override;

 void OnSessionMessage(const nsAString& aSessionId,
                       dom::MediaKeyMessageType aMessageType,
                       const nsTArray<uint8_t>& aMessage) override;

 void OnExpirationChange(const nsAString& aSessionId,
                         UnixTime aExpiryTime) override;

 void OnSessionClosed(const nsAString& aSessionId,
                      dom::MediaKeySessionClosedReason aReason) override;

 void OnSessionError(const nsAString& aSessionId, nsresult aException,
                     uint32_t aSystemCode, const nsAString& aMsg) override;

 void OnRejectPromise(uint32_t aPromiseId, ErrorResult&& aException,
                      const nsCString& aMsg) override;

 RefPtr<DecryptPromise> Decrypt(MediaRawData* aSample) override;
 void OnDecrypted(uint32_t aId, DecryptStatus aResult,
                  const nsTArray<uint8_t>& aDecryptedData) override;

 void RejectPromise(PromiseId aId, ErrorResult&& aException,
                    const nsCString& aReason) override;
 // Reject promise with an InvalidStateError and the given message.
 void RejectPromiseWithStateError(PromiseId aId, const nsCString& aReason);

 // Resolves promise with "undefined".
 // Can be called from any thread.
 void ResolvePromise(PromiseId aId) override;

 void OnKeyStatusesChange(const nsAString& aSessionId) override;

 void GetStatusForPolicy(PromiseId aPromiseId,
                         const dom::HDCPVersion& aMinHdcpVersion) override;

#ifdef DEBUG
 bool IsOnOwnerThread() override;
#endif

 const nsString& GetMediaDrmStubId() const;

private:
 virtual ~MediaDrmCDMProxy();

 void OnCDMCreated(uint32_t aPromiseId);

 template <typename T>
 void ResolvePromiseWithResult(PromiseId aId, const T& aResult);

 struct CreateSessionData {
   dom::MediaKeySessionType mSessionType;
   uint32_t mCreateSessionToken;
   PromiseId mPromiseId;
   nsCString mInitDataType;
   nsTArray<uint8_t> mInitData;
 };

 struct UpdateSessionData {
   PromiseId mPromiseId;
   nsCString mSessionId;
   nsTArray<uint8_t> mResponse;
 };

 struct SessionOpData {
   PromiseId mPromiseId;
   nsCString mSessionId;
 };

 class RejectPromiseTask : public Runnable {
  public:
   RejectPromiseTask(MediaDrmCDMProxy* aProxy, PromiseId aId,
                     ErrorResult&& aException, const nsCString& aReason)
       : Runnable("RejectPromiseTask"),
         mProxy(aProxy),
         mId(aId),
         mException(std::move(aException)),
         mReason(aReason) {}
   NS_IMETHOD Run() override {
     // Moving into or out of a non-copyable ErrorResult will assert that both
     // ErorResults are from our current thread.  Avoid the assertion by moving
     // into a current-thread CopyableErrorResult first.  Note that this is
     // safe, because CopyableErrorResult never holds state that can't move
     // across threads.
     CopyableErrorResult rv(std::move(mException));
     mProxy->RejectPromise(mId, std::move(rv), mReason);
     return NS_OK;
   }

  private:
   RefPtr<MediaDrmCDMProxy> mProxy;
   PromiseId mId;
   // We use a CopyableErrorResult here, because we're going to dispatch to a
   // different thread and normal ErrorResult doesn't support that.
   // CopyableErrorResult ensures that it only stores values that are safe to
   // move across threads.
   CopyableErrorResult mException;
   nsCString mReason;
 };

 nsCString mNodeId;
 UniquePtr<MediaDrmProxySupport> mCDM;
 bool mShutdownCalled;

 // =====================================================================
 // For MediaDrmProxySupport
 void md_Init(uint32_t aPromiseId);
 void md_CreateSession(UniquePtr<CreateSessionData>&& aData);
 void md_SetServerCertificate(PromiseId aPromiseId,
                              const nsTArray<uint8_t>& aCert);
 void md_UpdateSession(UniquePtr<UpdateSessionData>&& aData);
 void md_CloseSession(UniquePtr<SessionOpData>&& aData);
 void md_Shutdown();
 // =====================================================================
};

}  // namespace mozilla

#endif  // MediaDrmCDMProxy_h_