GStreamer serial plugin
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Introduction
Gstreamer serial plugin (gst-serial) provides the tools to interact with a serial port using gstreamer. It includes the serialsrc element which allows the user to capture from a given serial port. It allows the control of the transfer baudrate but it can easily be extended to expose any additional configuration.
Build instructions
$ cd gst-serial $ ./autogen.sh $ ./configure $ make all install
gst-inspect output
Factory Details: Rank none (0) Long-name Serial port source Klass Source/serial Description Reads data from serial port Author Edison Fernandez <edison.fernandez@ridgerun.com> Plugin Details: Name serial Description Elements used to interact with serial port data Filename /home/efernandez/work/Gstreamer/gst_1.8.1/out/lib/gstreamer-1.0/libgstserial.so Version 0.1.0 License Proprietary Source module gst-serial Binary package RidgeRun elements Origin URL http://www.ridgerun.com GObject +----GInitiallyUnowned +----GstObject +----GstElement +----GstBaseSrc +----GstPushSrc +----GstSerialSrc Pad Templates: SRC template: 'src' Availability: Always Capabilities: ANY Element Flags: no flags set Element Implementation: Has change_state() function: gst_base_src_change_state Element has no clocking capabilities. Element has no URI handling capabilities. Pads: SRC: 'src' Pad Template: 'src' Element Properties: name : The name of the object flags: readable, writable String. Default: "serialsrc0" parent : The parent of the object flags: readable, writable Object of type "GstObject" blocksize : Size in bytes to read per buffer (-1 = default) flags: readable, writable Unsigned Integer. Range: 0 - 4294967295 Default: 4096 num-buffers : Number of buffers to output before sending EOS (-1 = unlimited) flags: readable, writable Integer. Range: -1 - 2147483647 Default: -1 typefind : Run typefind before negotiating flags: readable, writable Boolean. Default: false do-timestamp : Apply current stream time to buffers flags: readable, writable Boolean. Default: true port : The serial port that will be read. flags: readable, writable String. Default: "/dev/tty0" baudrate : The baudrate to be used for the serial port. See termios.h for a list of valid values. flags: readable, writable Unsigned Integer. Range: 50 - 4000000 Default: 115200 stop-bits : Number of stop bits to use flags: readable, writable Unsigned Integer. Range: 1 - 2 Default: 1 parity : Parity to be used flags: readable, writable Enum "GstSerialSrcParity" Default: 0, "none" (0): none - No parity (1): even - Even parity (2): odd - Odd parity data-bits : Number of data bits to be used flags: readable, writable Enum "GstSerialSrcDataBits" Default: 3, "CS8" (0): CS5 - 5 data bits (1): CS6 - 6 data bits (2): CS7 - 7 data bits (3): CS8 - 8 data bits flow-control : Use hardware flow control flags: readable, writable Boolean. Default: false canonical : Enable canonical mode flags: readable, writable Boolean. Default: true
Test pipelines
gst-launch-1.0 -v serialsrc port=/dev/ttyUSB0 baudrate=115200 ! meta/x-klv ! metasink
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