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(uint32_t promise_id,
  38                           const std::string& key_system,
  39                           bool allow_distinctive_identifier,
  40                           bool allow_persistent_state) = 0;
  41   virtual void SetServerCertificate(uint32_t promise_id,
  42                                     pp::VarArrayBuffer server_certificate) = 0;
  43   virtual void CreateSessionAndGenerateRequest(
  44       uint32_t promise_id,
  45       PP_SessionType session_type,
  46       PP_InitDataType init_data_type,
  47       pp::VarArrayBuffer init_data) = 0;
  48   virtual void LoadSession(uint32_t promise_id,
  49                            PP_SessionType session_type,
  50                            const std::string& session_id) = 0;
  51   virtual void UpdateSession(uint32_t promise_id,
  52                              const std::string& session_id,
  53                              pp::VarArrayBuffer response) = 0;
  54   virtual void CloseSession(uint32_t promise_id,
  55                             const std::string& session_id) = 0;
  56   virtual void RemoveSession(uint32_t promise_id,
  57                              const std::string& session_id) = 0;
  58   virtual void Decrypt(pp::Buffer_Dev encrypted_buffer,
  59                        const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
  60   virtual void InitializeAudioDecoder(
  61       const PP_AudioDecoderConfig& decoder_config,
  62       pp::Buffer_Dev extra_data_resource) = 0;
  63   virtual void InitializeVideoDecoder(
  64       const PP_VideoDecoderConfig& decoder_config,
  65       pp::Buffer_Dev extra_data_resource) = 0;
  66   virtual void DeinitializeDecoder(PP_DecryptorStreamType decoder_type,
  67                                    uint32_t request_id) = 0;
  68   virtual void ResetDecoder(PP_DecryptorStreamType decoder_type,
  69                             uint32_t request_id) = 0;
  70   // Null |encrypted_frame| means end-of-stream buffer.
  71   virtual void DecryptAndDecode(
  72       PP_DecryptorStreamType decoder_type,
  73       pp::Buffer_Dev encrypted_buffer,
  74       const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
  75
  76   // PPB_ContentDecryptor_Private methods for passing data from the decryptor
  77   // to the browser.
  78   void PromiseResolved(uint32_t promise_id);
  79   void PromiseResolvedWithSession(uint32_t promise_id,
  80                                   const std::string& session_id);
  81   void PromiseRejected(uint32_t promise_id,
  82                        PP_CdmExceptionCode exception_code,
  83                        uint32_t system_code,
  84                        const std::string& error_description);
  85   void SessionMessage(const std::string& session_id,
  86                       PP_CdmMessageType message_type,
  87                       pp::VarArrayBuffer message,
  88                       const std::string& legacy_destination_url);
  89   void SessionKeysChange(const std::string& session_id,
  90                          bool has_additional_usable_key,
  91                          const std::vector<PP_KeyInformation>& key_information);
  92   void SessionExpirationChange(const std::string& session_id,
  93                                PP_Time new_expiry_time);
  94   void SessionClosed(const std::string& session_id);
  95   void LegacySessionError(const std::string& session_id,
  96                           PP_CdmExceptionCode exception_code,
  97                           uint32_t system_code,
  98                           const std::string& error_description);
  99
 100   // The plugin must not hold a reference to the encrypted buffer resource
 101   // provided to Decrypt() when it calls this method. The browser will reuse
 102   // the buffer in a subsequent Decrypt() call.
 103   void DeliverBlock(pp::Buffer_Dev decrypted_block,
 104                     const PP_DecryptedBlockInfo& decrypted_block_info);
 105
 106   void DecoderInitializeDone(PP_DecryptorStreamType decoder_type,
 107                              uint32_t request_id,
 108                              bool status);
 109   void DecoderDeinitializeDone(PP_DecryptorStreamType decoder_type,
 110                                uint32_t request_id);
 111   void DecoderResetDone(PP_DecryptorStreamType decoder_type,
 112                         uint32_t request_id);
 113
 114   // The plugin must not hold a reference to the encrypted buffer resource
 115   // provided to DecryptAndDecode() when it calls this method. The browser will
 116   // reuse the buffer in a subsequent DecryptAndDecode() call.
 117   void DeliverFrame(pp::Buffer_Dev decrypted_frame,
 118                     const PP_DecryptedFrameInfo& decrypted_frame_info);
 119
 120   // The plugin must not hold a reference to the encrypted buffer resource
 121   // provided to DecryptAndDecode() when it calls this method. The browser will
 122   // reuse the buffer in a subsequent DecryptAndDecode() call.
 123   void DeliverSamples(pp::Buffer_Dev audio_frames,
 124                       const PP_DecryptedSampleInfo& decrypted_sample_info);
 125
 126  private:
 127   InstanceHandle associated_instance_;
 128 };
 129
 130 }  // namespace pp
 131
 132 #endif  // PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_