cameracompress

Image compression. More...

Image compression.

The cameracompress driver accepts data from another camera device, compresses it, and makes the compressed data available on a new interface.

Compile-time dependencies

• libjpeg

Provides

• Compressed image data is provided via a camera device.

Requires

• Image data to be compressed is read from a camera device.

Configuration requests

• none

Configuration file options

• check_timestamps (integer)
  • Default: 0
  • If non-zero, timestamps are checked so only new images are compressed and published.
• save (integer)
  • Default: 0
  • If non-zero, uncompressed images are saved to disk (with a .jpeg extension)
• image_quality (float)
  • Default: 0.8
  • Image quality for JPEG compression
• request_only (integer)
  • Default: 0
  • If set to 1, data will be sent only at PLAYER_CAMEARA_REQ_GET_IMAGE response.

Example

driver
(
  name "cameracompress"
  provides ["camera:1"]
  requires ["camera:0"]  # Compress data from device camera:0
)

Author

Nate Koenig, Andrew Howard