ppapi/cpp/private/content_decryptor_private.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_
   6 #define PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "ppapi/c/private/pp_content_decryptor.h"
  12 #include "ppapi/c/private/ppb_content_decryptor_private.h"
  13 #include "ppapi/c/private/ppp_content_decryptor_private.h"
  14
  15 #include "ppapi/cpp/dev/buffer_dev.h"
  16 #include "ppapi/cpp/instance_handle.h"
  17 #include "ppapi/cpp/var.h"
  18 #include "ppapi/cpp/var_array_buffer.h"
  19
  20 namespace pp {
  21
  22 class Instance;
  23
  24 // TODO(tomfinegan): Remove redundant pp:: usage, and pass VarArrayBuffers as
  25 // const references.
  26
  27 class ContentDecryptor_Private {
  28  public:
  29   explicit ContentDecryptor_Private(Instance* instance);
  30   virtual ~ContentDecryptor_Private();
  31
  32   // PPP_ContentDecryptor_Private functions exposed as virtual functions
  33   // for you to override.
  34   // TODO(tomfinegan): This could be optimized to pass pp::Var instead of
  35   // strings. The change would allow the CDM wrapper to reuse vars when
  36   // replying to the browser.
  37   virtual void Initialize(const std::string& key_system,
  38                           bool allow_distinctive_identifier,
  39                           bool allow_persistent_state) = 0;
  40   virtual void SetServerCertificate(uint32_t promise_id,
  41                                     pp::VarArrayBuffer server_certificate) = 0;
  42   virtual void CreateSessionAndGenerateRequest(
  43       uint32_t promise_id,
  44       PP_SessionType session_type,
  45       const std::string& init_data_type,
  46       pp::VarArrayBuffer init_data) = 0;
  47   virtual void LoadSession(uint32_t promise_id,
  48                            PP_SessionType session_type,
  49                            const std::string& session_id) = 0;
  50   virtual void UpdateSession(uint32_t promise_id,
  51                              const std::string& session_id,
  52                              pp::VarArrayBuffer response) = 0;
  53   virtual void CloseSession(uint32_t promise_id,
  54                             const std::string& session_id) = 0;
  55   virtual void RemoveSession(uint32_t promise_id,
  56                              const std::string& session_id) = 0;
  57   virtual void Decrypt(pp::Buffer_Dev encrypted_buffer,
  58                        const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
  59   virtual void InitializeAudioDecoder(
  60       const PP_AudioDecoderConfig& decoder_config,
  61       pp::Buffer_Dev extra_data_resource) = 0;
  62   virtual void InitializeVideoDecoder(
  63       const PP_VideoDecoderConfig& decoder_config,
  64       pp::Buffer_Dev extra_data_resource) = 0;
  65   virtual void DeinitializeDecoder(PP_DecryptorStreamType decoder_type,
  66                                    uint32_t request_id) = 0;
  67   virtual void ResetDecoder(PP_DecryptorStreamType decoder_type,
  68                             uint32_t request_id) = 0;
  69   // Null |encrypted_frame| means end-of-stream buffer.
  70   virtual void DecryptAndDecode(
  71       PP_DecryptorStreamType decoder_type,
  72       pp::Buffer_Dev encrypted_buffer,
  73       const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
  74
  75   // PPB_ContentDecryptor_Private methods for passing data from the decryptor
  76   // to the browser.
  77   void PromiseResolved(uint32_t promise_id);
  78   void PromiseResolvedWithSession(uint32_t promise_id,
  79                                   const std::string& session_id);
  80   void PromiseRejected(uint32_t promise_id,
  81                        PP_CdmExceptionCode exception_code,
  82                        uint32_t system_code,
  83                        const std::string& error_description);
  84   void SessionMessage(const std::string& session_id,
  85                       PP_CdmMessageType message_type,
  86                       pp::VarArrayBuffer message,
  87                       const std::string& legacy_destination_url);
  88   void SessionKeysChange(const std::string& session_id,
  89                          bool has_additional_usable_key,
  90                          const std::vector<PP_KeyInformation>& key_information);
  91   void SessionExpirationChange(const std::string& session_id,
  92                                PP_Time new_expiry_time);
  93   void SessionClosed(const std::string& session_id);
  94   void SessionError(const std::string& session_id,
  95                     PP_CdmExceptionCode exception_code,
  96                     uint32_t system_code,
  97                     const std::string& error_description);
  98
  99   // The plugin must not hold a reference to the encrypted buffer resource
 100   // provided to Decrypt() when it calls this method. The browser will reuse
 101   // the buffer in a subsequent Decrypt() call.
 102   void DeliverBlock(pp::Buffer_Dev decrypted_block,
 103                     const PP_DecryptedBlockInfo& decrypted_block_info);
 104
 105   void DecoderInitializeDone(PP_DecryptorStreamType decoder_type,
 106                              uint32_t request_id,
 107                              bool status);
 108   void DecoderDeinitializeDone(PP_DecryptorStreamType decoder_type,
 109                                uint32_t request_id);
 110   void DecoderResetDone(PP_DecryptorStreamType decoder_type,
 111                         uint32_t request_id);
 112
 113   // The plugin must not hold a reference to the encrypted buffer resource
 114   // provided to DecryptAndDecode() when it calls this method. The browser will
 115   // reuse the buffer in a subsequent DecryptAndDecode() call.
 116   void DeliverFrame(pp::Buffer_Dev decrypted_frame,
 117                     const PP_DecryptedFrameInfo& decrypted_frame_info);
 118
 119   // The plugin must not hold a reference to the encrypted buffer resource
 120   // provided to DecryptAndDecode() when it calls this method. The browser will
 121   // reuse the buffer in a subsequent DecryptAndDecode() call.
 122   void DeliverSamples(pp::Buffer_Dev audio_frames,
 123                       const PP_DecryptedSampleInfo& decrypted_sample_info);
 124
 125  private:
 126   InstanceHandle associated_instance_;
 127 };
 128
 129 }  // namespace pp
 130
 131 #endif  // PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_