General Audio/Video Distribution Profile (GAVDP)
 GAVDP provides the basis for A2DP and VDP, the basis of the systems designed for distributing video and audio streams using Bluetooth technology.
Usage Scenarios
A typical scenario is a set of wireless stereo headphones and a music player, such as an MP3 player or Walkman. The music player sends messages to the headphones to establish a connection or adjust the stream of music, or vise versa.
Example Products
Here are a few examples of the types of devices that you might find using the GAVDP:
- Music Player
- Stereo Headphones
- Stereo Speakers
- Laptop
- PC
- Mobile phone
- PDA
Getting Technical
The GAVDP defines two roles, that of an Initiator and an Acceptor:
- Initiator (INT) – This is the device that initiates a signaling procedure.
- Acceptor (ACP – This is the device that shall respond to an incoming request from the INT
- Note: the roles are not fixed to the devices. The roles are determined when you initiate a signaling procedure, and they are released when the procedure ends. The roles can be switched between two devices when a new procedure is initiated.
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The Baseband, LMP, L2CAP, and SDP are Bluetooth protocols defined in the Bluetooth Core specifications. AVDTP consists of a signaling entity for negotiation of streaming parameters and a transport entity that handles the streaming.
Need more? View the General Audio/Video Distribution Profile (GAVDP) v1.2. |
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