drs232_ldpc1
Horus sstv reception using the codec2 library.
Usage
drs232_ldpc usage:
InputOneBitPerChar
OutputPacket
[-v
[v]]
Overview
Looks for a unique word in series of soft decision symbols. When found, deframes a RS232 encoded frame of soft decision bit, LDPC decodes, and outputs a frame of packed bytes. Used for high bit rate Horus SSTV reception.
Frame format:
16 bytes 0x55 - 0xabcdef01 UW - 256 bytes of payload - 2 bytes CRC - 65 bytes LPDC Parity
Each byte is encoded as a 10 bit RS232 serial word:
0 LSB .... MSB 1
Options
The first argument, InputOneSymbolPerFloat is the file name of a file with Horus encoded bits. If "-" is given the input is taken from stdin.
The second argument, OutputPackets is the file name of a file to be created with modem sample data. If "-" is given the output is sent to stdout.
The optional third argument, [-v] [-vv] set the verbosity of the output.