- Protocol Version: 3.1
- Release Date: July 14, 2017
The Video message supports video codec streaming with metric information including codec protocal name, frame height, frame width, etc. The body section of the VIDEO data consists of two parts: video header to transfer the metric information and video body to transfer encoded video bit stream. The numerical values can be 8-, 16-, 32-bit integer, depending on the encoder. The pixel values can be either big-endian or little-endian. This message type could be used for real-time video transmission.
| Data | Type | Description |
|---|---|---|
| HEADER_VERSION | uint16 | Header version number |
| ENDIAN | uint8 | Endian for image data (1:BIG 2:LITTLE) |
| ENCODING | char[4] | FourCC codec name, Default codec="VP90" |
| FRAMETYPE | uint16 | Field to identify frame type, such as key frame or invalid frame. Also, if the type value is larger than 0xFF, it indicates gray frames are encoded |
| COORD | uint8[3] | Coordinate system (1:RAS 2:LPS) |
| SIZE | uint16 | Video frame size |
| MATRIX | float32[12] | Orientation / origin of image |
| SUBVOL_OFFSET | uint16[3] | Sub volume offset |
| SUBVOL_SIZE | uint16[3] | Sub volume size |
| Data | Type | Description |
|---|---|---|
| CODEC | char[4] | Command Parameter. The Codec name indicates which codec to use for compression, Default codec="VP90". |
| TIME_INTERVAL | uint32 | Command Parameter. Minimum time between two frames. Unit is millisecond. Default = 50 ms |
N/A
The TDATA message type is implemented in the following source code.
*Longquan Chen Junichi Tokuda