Relocate last remnants of webkit/renderer/media code.

webkit/renderer/media/crypto/ppapi/clear_key_cdm.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef WEBKIT_RENDERER_MEDIA_CRYPTO_PPAPI_CLEAR_KEY_CDM_H_
-#define WEBKIT_RENDERER_MEDIA_CRYPTO_PPAPI_CLEAR_KEY_CDM_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/synchronization/lock.h"
-#include "media/crypto/aes_decryptor.h"
-#include "webkit/renderer/media/crypto/ppapi/cdm/content_decryption_module.h"
-
-// Enable this to use the fake decoder for testing.
-// TODO(tomfinegan): Move fake audio decoder into a separate class.
-#if 0
-#define CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER
-#endif
-
-namespace media {
-class DecoderBuffer;
-}
-
-namespace webkit_media {
-
-class CdmVideoDecoder;
-class FFmpegCdmAudioDecoder;
-
-// Clear key implementation of the cdm::ContentDecryptionModule interface.
-class ClearKeyCdm : public cdm::ContentDecryptionModule {
- public:
-  explicit ClearKeyCdm(cdm::Host* host);
-  virtual ~ClearKeyCdm();
-
-  // ContentDecryptionModule implementation.
-  virtual cdm::Status GenerateKeyRequest(
-      const char* type, int type_size,
-      const uint8_t* init_data, int init_data_size) OVERRIDE;
-  virtual cdm::Status AddKey(const char* session_id, int session_id_size,
-                             const uint8_t* key, int key_size,
-                             const uint8_t* key_id, int key_id_size) OVERRIDE;
-  virtual cdm::Status CancelKeyRequest(const char* session_id,
-                                       int session_id_size) OVERRIDE;
-  virtual void TimerExpired(void* context) OVERRIDE;
-  virtual cdm::Status Decrypt(const cdm::InputBuffer& encrypted_buffer,
-                              cdm::DecryptedBlock* decrypted_block) OVERRIDE;
-  virtual cdm::Status InitializeAudioDecoder(
-      const cdm::AudioDecoderConfig& audio_decoder_config) OVERRIDE;
-  virtual cdm::Status InitializeVideoDecoder(
-      const cdm::VideoDecoderConfig& video_decoder_config) OVERRIDE;
-  virtual void DeinitializeDecoder(cdm::StreamType decoder_type) OVERRIDE;
-  virtual void ResetDecoder(cdm::StreamType decoder_type) OVERRIDE;
-  virtual cdm::Status DecryptAndDecodeFrame(
-      const cdm::InputBuffer& encrypted_buffer,
-      cdm::VideoFrame* video_frame) OVERRIDE;
-  virtual cdm::Status DecryptAndDecodeSamples(
-      const cdm::InputBuffer& encrypted_buffer,
-      cdm::AudioFrames* audio_frames) OVERRIDE;
-  virtual void Destroy() OVERRIDE;
-
- private:
-  // TODO(xhwang): After we removed DecryptorClient. We probably can also remove
-  // this Client class as well. Investigate this possibility.
-  class Client {
-   public:
-    enum Status {
-      kKeyAdded,
-      kKeyError,
-      kKeyMessage
-    };
-
-    Client();
-    virtual ~Client();
-
-    Status status() { return status_; }
-    const std::string& session_id() { return session_id_; }
-    const std::vector<uint8>& key_message() { return key_message_; }
-    const std::string& default_url() { return default_url_; }
-
-    // Resets the Client to a clean state.
-    void Reset();
-
-    void KeyAdded(const std::string& session_id);
-    void KeyError(const std::string& session_id,
-                  media::MediaKeys::KeyError error_code,
-                  int system_code);
-    void KeyMessage(const std::string& session_id,
-                    const std::vector<uint8>& message,
-                    const std::string& default_url);
-
-   private:
-    Status status_;
-    std::string session_id_;
-    std::vector<uint8> key_message_;
-    std::string default_url_;
-  };
-
-  // Prepares next heartbeat message and sets a timer for it.
-  void ScheduleNextHeartBeat();
-
-  // Decrypts the |encrypted_buffer| and puts the result in |decrypted_buffer|.
-  // Returns cdm::kSuccess if decryption succeeded. The decrypted result is
-  // put in |decrypted_buffer|. If |encrypted_buffer| is empty, the
-  // |decrypted_buffer| is set to an empty (EOS) buffer.
-  // Returns cdm::kNoKey if no decryption key was available. In this case
-  // |decrypted_buffer| should be ignored by the caller.
-  // Returns cdm::kDecryptError if any decryption error occurred. In this case
-  // |decrypted_buffer| should be ignored by the caller.
-  cdm::Status DecryptToMediaDecoderBuffer(
-      const cdm::InputBuffer& encrypted_buffer,
-      scoped_refptr<media::DecoderBuffer>* decrypted_buffer);
-
-#if defined(CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER)
-  int64 CurrentTimeStampInMicroseconds() const;
-
-  // Generates fake video frames with |duration_in_microseconds|.
-  // Returns the number of samples generated in the |audio_frames|.
-  int GenerateFakeAudioFramesFromDuration(int64 duration_in_microseconds,
-                                          cdm::AudioFrames* audio_frames) const;
-
-  // Generates fake video frames given |input_timestamp|.
-  // Returns cdm::kSuccess if any audio frame is successfully generated.
-  cdm::Status GenerateFakeAudioFrames(int64 timestamp_in_microseconds,
-                                      cdm::AudioFrames* audio_frames);
-#endif  // CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER
-
-  Client client_;
-  media::AesDecryptor decryptor_;
-
-  // Protects the |client_| from being accessed by the |decryptor_|
-  // simultaneously.
-  base::Lock client_lock_;
-
-  cdm::Host* host_;
-
-  std::string heartbeat_session_id_;
-  std::string next_heartbeat_message_;
-
-  // Timer delay in milliseconds for the next host_->SetTimer() call.
-  int64 timer_delay_ms_;
-
-  // Indicates whether a timer has been set to prevent multiple timers from
-  // running.
-  bool timer_set_;
-
-#if defined(CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER)
-  int channel_count_;
-  int bits_per_channel_;
-  int samples_per_second_;
-  int64 output_timestamp_base_in_microseconds_;
-  int total_samples_generated_;
-#endif  // CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER
-
-#if defined(CLEAR_KEY_CDM_USE_FFMPEG_DECODER)
-  scoped_ptr<FFmpegCdmAudioDecoder> audio_decoder_;
-#endif  // CLEAR_KEY_CDM_USE_FFMPEG_DECODER
-
-  scoped_ptr<CdmVideoDecoder> video_decoder_;
-
-  DISALLOW_COPY_AND_ASSIGN(ClearKeyCdm);
-};
-
-}  // namespace webkit_media
-
-#endif  // WEBKIT_RENDERER_MEDIA_CRYPTO_PPAPI_CLEAR_KEY_CDM_H_