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The purpose of this document is to simplify some of the terms, descriptions, and mechanisms of the GStreamer core. It will, initially, serve as a foundation to help model and test the GStreamer implementation in the RDK/HAL system.

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This document describe the details of the following,

• API for multimedia applications
• Plugin architecture
• Pipeline architecture
• Mechanism for media type handling, negotiation, synchronization

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1. GST_STATE_NULL: default state; no resources are allocated in this state
2. GST_STATE_READY: an element has allocated all of its global resources within the stream, but the stream is NOT open yet.
3. GST_STATE_PAUSED: an element has opened the stream, but no actively processing it. (clock does NOT run)
4. GST_STATE_PLAYING: an element maintains the open stream while processing it. (clock starts)

Porting

The following is a list of components that might be needed to properly test implementation of the HAL GST components

1. aesdecyrpt
2. aesencrypt
3. dtcpdecrypt
4. dtcpencrypt
5. httpsink
6. rbifilter