third_party/WebKit/public/platform/WebContentDecryptionModuleSession.h

   1 /*
   2  * Copyright (C) 2013 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #ifndef WebContentDecryptionModuleSession_h
  32 #define WebContentDecryptionModuleSession_h
  33
  34 #include "WebCommon.h"
  35 #include "WebVector.h"
  36 #include "public/platform/WebContentDecryptionModuleException.h"
  37 #include "public/platform/WebContentDecryptionModuleResult.h"
  38 #include "public/platform/WebEncryptedMediaTypes.h"
  39
  40 namespace blink {
  41
  42 class WebEncryptedMediaKeyInformation;
  43 class WebString;
  44 class WebURL;
  45
  46 class BLINK_PLATFORM_EXPORT WebContentDecryptionModuleSession {
  47 public:
  48     class BLINK_PLATFORM_EXPORT Client {
  49     public:
  50         enum class MessageType {
  51             LicenseRequest,
  52             LicenseRenewal,
  53             LicenseRelease
  54         };
  55
  56         virtual void message(MessageType, const unsigned char* message, size_t messageLength) = 0;
  57         virtual void close() = 0;
  58
  59         // Called when the expiration time for the session changes.
  60         // |updatedExpiryTimeInMS| is specified as the number of milliseconds
  61         // since 01 January, 1970 UTC.
  62         virtual void expirationChanged(double updatedExpiryTimeInMS) = 0;
  63
  64         // Called when the set of keys for this session changes or existing keys
  65         // change state. |hasAdditionalUsableKey| is set if a key is newly
  66         // usable (e.g. new key available, previously expired key has been
  67         // renewed, etc.) and the browser should attempt to resume playback
  68         // if necessary.
  69         virtual void keysStatusesChange(const WebVector<WebEncryptedMediaKeyInformation>&, bool hasAdditionalUsableKey) = 0;
  70
  71     protected:
  72         virtual ~Client();
  73     };
  74
  75     virtual ~WebContentDecryptionModuleSession();
  76
  77     virtual void setClientInterface(Client*) = 0;
  78     virtual WebString sessionId() const = 0;
  79
  80     virtual void initializeNewSession(WebEncryptedMediaInitDataType, const unsigned char* initData, size_t initDataLength, WebEncryptedMediaSessionType, WebContentDecryptionModuleResult) = 0;
  81     virtual void load(const WebString& sessionId, WebContentDecryptionModuleResult) = 0;
  82     virtual void update(const unsigned char* response, size_t responseLength, WebContentDecryptionModuleResult) = 0;
  83     virtual void close(WebContentDecryptionModuleResult) = 0;
  84     virtual void remove(WebContentDecryptionModuleResult) = 0;
  85 };
  86
  87 } // namespace blink
  88
  89 #endif // WebContentDecryptionModuleSession_h