Linaro CDMI is a fork of the Open Content Decryption Module (OCDM). The reason for creating this fork is to taget the outstanding issues with Open CDM described here:
https://groups.google.com/forum/#!topic/opencdm/ovamIrJn3z0
The Linaro CDMi is to be used with the Linaro CDM. It is meant to run as a service connecting the webbrowser with the actual CDM. Any CDM that follows the Content Decryption Module Interface (CDMi) [1] can be used with this service. Together, both components enable DRM interoperability to be used with HTML5 based browser environments [2] according to W3C EME [3] specification.
This repository provides a bare bones implementation to demonstrate how a CDM can be adapted to be used with OCDM through the CDMi interface. The implementation provides the complete flow between webbrowser and CDM.
OCDM is built with a modular concept in mind to be easily extendible and flexible. For more information see the the OCDM repository.
Fraunhofer FOKUS has developed the Open Content Decryption Module (OCDM) according to W3C EME specification to be used with HTML5 based browser environments. The implementation enables DRM interoperability. We would be happy to see a broad adoption of our implementation and encourage contributions. A first e2e implementation has been done testing with a Microsoft PlayReady CDMi implementation.
- Interoperable HTML5 based protected video delivery
- DRM interoperability
- CENC, DASH
- Plugin based integration (Pepper Plugin API)
- CDMi allows open source browsers to support DRM without licensing it
- e2e tested with Microsoft PlayReady DRM system
- [1] Content Decryption Module Interface Specification http://download.microsoft.com/download/E/A/4/EA470677-6C3C-4AFE-8A86-A196ADFD0F78/Content%20Decryption%20Module%20Interface%20Specification.pdf
- [2] Fraunhofer FOKUS FAMIUM DRM http://www.fokus.fraunhofer.de/en/fame/Solutions/DRM/index.html
- [3] W3C Encrypted Media Extensions https://dvcs.w3.org/hg/html-media/raw-file/default/encrypted-media/encrypted-media.html
The used development platform is Ubuntu Linux 14.04 64-bit, should work fine on most other Linux' as well.
- clone this repository
- Build
$ ./configure$ make
$ cd cdmi$ ./cdmiservice
This is a preliminary release. Please file any issues or comments.
- TODO: add session-load support
- TODO: use named pipes for IPC
- Code needs more review (e.g. memory allocation, appropriate data types).
Please see the OCDM repository for further information github.com/fraunhoferfokus/open-content-decryption-module.
Copyright 2014 Fraunhofer FOKUS Copyright 2015 Linaro LtD
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.