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 "ppapi/c/private/pp_content_decryptor.h"
   9 #include "ppapi/c/private/ppb_content_decryptor_private.h"
  10 #include "ppapi/c/private/ppp_content_decryptor_private.h"
  11
  12 #include "ppapi/cpp/dev/buffer_dev.h"
  13 #include "ppapi/cpp/instance_handle.h"
  14 #include "ppapi/cpp/var.h"
  15 #include "ppapi/cpp/var_array_buffer.h"
  16
  17 namespace pp {
  18
  19 class Instance;
  20
  21 // TODO(tomfinegan): Remove redundant pp:: usage, and pass VarArrayBuffers as
  22 // const references.
  23
  24 class ContentDecryptor_Private {
  25  public:
  26   explicit ContentDecryptor_Private(Instance* instance);
  27   virtual ~ContentDecryptor_Private();
  28
  29   // PPP_ContentDecryptor_Private functions exposed as virtual functions
  30   // for you to override.
  31   // TODO(tomfinegan): This could be optimized to pass pp::Var instead of
  32   // strings. The change would allow the CDM wrapper to reuse vars when
  33   // replying to the browser.
  34   virtual void Initialize(const std::string& key_system) = 0;
  35   virtual void CreateSession(uint32_t session_id,
  36                              const std::string& content_type,
  37                              pp::VarArrayBuffer init_data) = 0;
  38   virtual void LoadSession(uint32_t session_id,
  39                            const std::string& web_session_id) = 0;
  40   virtual void UpdateSession(uint32_t session_id,
  41                              pp::VarArrayBuffer response) = 0;
  42   virtual void ReleaseSession(uint32_t session_id) = 0;
  43   virtual void Decrypt(pp::Buffer_Dev encrypted_buffer,
  44                        const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
  45   virtual void InitializeAudioDecoder(
  46       const PP_AudioDecoderConfig& decoder_config,
  47       pp::Buffer_Dev extra_data_resource) = 0;
  48   virtual void InitializeVideoDecoder(
  49       const PP_VideoDecoderConfig& decoder_config,
  50       pp::Buffer_Dev extra_data_resource) = 0;
  51   virtual void DeinitializeDecoder(PP_DecryptorStreamType decoder_type,
  52                                    uint32_t request_id) = 0;
  53   virtual void ResetDecoder(PP_DecryptorStreamType decoder_type,
  54                             uint32_t request_id) = 0;
  55   // Null |encrypted_frame| means end-of-stream buffer.
  56   virtual void DecryptAndDecode(
  57       PP_DecryptorStreamType decoder_type,
  58       pp::Buffer_Dev encrypted_buffer,
  59       const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
  60
  61   // PPB_ContentDecryptor_Private methods for passing data from the decryptor
  62   // to the browser.
  63   void SessionCreated(uint32_t session_id, const std::string& web_session_id);
  64   void SessionMessage(uint32_t session_id,
  65                       pp::VarArrayBuffer message,
  66                       const std::string& default_url);
  67   void SessionReady(uint32_t session_id);
  68   void SessionClosed(uint32_t session_id);
  69   void SessionError(uint32_t session_id,
  70                     int32_t media_error,
  71                     uint32_t system_code);
  72
  73   // The plugin must not hold a reference to the encrypted buffer resource
  74   // provided to Decrypt() when it calls this method. The browser will reuse
  75   // the buffer in a subsequent Decrypt() call.
  76   void DeliverBlock(pp::Buffer_Dev decrypted_block,
  77                     const PP_DecryptedBlockInfo& decrypted_block_info);
  78
  79   void DecoderInitializeDone(PP_DecryptorStreamType decoder_type,
  80                              uint32_t request_id,
  81                              bool status);
  82   void DecoderDeinitializeDone(PP_DecryptorStreamType decoder_type,
  83                                uint32_t request_id);
  84   void DecoderResetDone(PP_DecryptorStreamType decoder_type,
  85                         uint32_t request_id);
  86
  87   // The plugin must not hold a reference to the encrypted buffer resource
  88   // provided to DecryptAndDecode() when it calls this method. The browser will
  89   // reuse the buffer in a subsequent DecryptAndDecode() call.
  90   void DeliverFrame(pp::Buffer_Dev decrypted_frame,
  91                     const PP_DecryptedFrameInfo& decrypted_frame_info);
  92
  93   // The plugin must not hold a reference to the encrypted buffer resource
  94   // provided to DecryptAndDecode() when it calls this method. The browser will
  95   // reuse the buffer in a subsequent DecryptAndDecode() call.
  96   void DeliverSamples(pp::Buffer_Dev audio_frames,
  97                       const PP_DecryptedSampleInfo& decrypted_sample_info);
  98
  99  private:
 100   InstanceHandle associated_instance_;
 101 };
 102
 103 }  // namespace pp
 104
 105 #endif  // PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_