text: // Copyright 2015 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 MEDIA_BASE_ANDROID_MEDIA_DRM_BRIDGE_DELEGATE_H_
  #define MEDIA_BASE_ANDROID_MEDIA_DRM_BRIDGE_DELEGATE_H_
  
  #include <stdint.h>
  
  #include <string>
  #include <vector>
  
  #include "base/macros.h"
  #include "media/base/android/media_drm_bridge_client.h"
  #include "media/base/eme_constants.h"
  #include "media/base/media_export.h"
  
  namespace media {
  
  // Allows embedders to modify the Android MediaDrm flow. Delegates are
  // registered to a specific key system.
  class MEDIA_EXPORT MediaDrmBridgeDelegate {
   public:
    MediaDrmBridgeDelegate();
    virtual ~MediaDrmBridgeDelegate();
  
    // Returns the UUID of the DRM scheme that this delegate applies to.
    virtual const UUID GetUUID() const = 0;
  
    // Invoked from CreateSession.
    // If |init_data_out| is filled, it replaces |init_data| to send to the
    // MediaDrm instance.
    // If |optional_parameters_out| is filled, it is expected to be an
    // even-length list of (key, value) pairs to send to the MediaDrm instance.
    // Returns false if the request should be rejected.
    virtual bool OnCreateSession(
        const EmeInitDataType init_data_type,
        const std::vector<uint8_t>& init_data,
        std::vector<uint8_t>* init_data_out,
        std::vector<std::string>* optional_parameters_out);
  
   private:
    DISALLOW_COPY_AND_ASSIGN(MediaDrmBridgeDelegate);
  };
  
  }  // namespace media
  
  #endif  // MEDIA_BASE_ANDROID_MEDIA_DRM_BRIDGE_DELEGATE_H_
  