76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
/*
|
||
* Copyright (C) 2012 The Android Open Source Project
|
||
*
|
||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
* you may not use this file except in compliance with the License.
|
||
* You may obtain a copy of the License at
|
||
*
|
||
* http://www.apache.org/licenses/LICENSE-2.0
|
||
*
|
||
* Unless required by applicable law or agreed to in writing, software
|
||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
* See the License for the specific language governing permissions and
|
||
* limitations under the License.
|
||
*/
|
||
|
||
#ifndef DRM_ENGINE_API_H_
|
||
#define DRM_ENGINE_API_H_
|
||
|
||
#include <utils/Errors.h>
|
||
#include <media/stagefright/foundation/ABase.h>
|
||
|
||
|
||
namespace android {
|
||
|
||
class CryptoPlugin;
|
||
class DrmClientPlugin;
|
||
|
||
// DRMs are implemented in DrmEngine plugins, which are dynamically
|
||
// loadable shared libraries that implement the entry point
|
||
// createDrmPluginFactory. createDrmPluginFactory constructs and returns
|
||
// an instance of a DrmPluginFactory object. When a MediaCrypto or
|
||
// DrmClient object needs to be constructed, all available
|
||
// DrmEngines present in the plugins directory on the device are scanned
|
||
// for a matching DrmEngine that can support the crypto scheme. When a
|
||
// match is found, the DrmEngine’s createCryptoPlugin or
|
||
// createDrmClientPlugin methods are used to create CryptoPlugin or
|
||
// DrmClientPlugin instances to support that DRM scheme.
|
||
|
||
class DrmPluginFactory {
|
||
public:
|
||
DrmPluginFactory() {}
|
||
virtual ~DrmPluginFactory() {}
|
||
|
||
// DrmPluginFactory::isCryptoSchemeSupported can be called to determine
|
||
// if the plugin factory is able to construct plugins that support a
|
||
// given crypto scheme, which is specified by a UUID.
|
||
virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]) const = 0;
|
||
|
||
// Construct a CryptoPlugin for the crypto scheme specified by UUID.
|
||
// {data, size} provide scheme-specific initialization data.
|
||
virtual status_t createCryptoPlugin(
|
||
const uint8_t uuid[16], const void *data, size_t size,
|
||
CryptoPlugin **plugin) = 0;
|
||
|
||
// Construct a DrmClientPlugin for the crypto scheme specified by UUID.
|
||
// {data, size} provide scheme-specific initialization data.
|
||
virtual status_t createDrmClientPlugin(
|
||
const uint8_t uuid[16], const void *data, size_t size,
|
||
DrmClientPlugin **plugin) = 0;
|
||
|
||
private:
|
||
DISALLOW_EVIL_CONSTRUCTORS(DrmPluginFactory);
|
||
};
|
||
|
||
} // namespace android
|
||
|
||
// Loadable DrmEngine shared libraries should define the entry point
|
||
// createDrmPluginFactory as shown below:
|
||
//
|
||
// extern "C" {
|
||
// extern android::DrmPluginFactory *createDrmPluginFactory();
|
||
// }
|
||
|
||
#endif // DRM_ENGINE_API_H_
|