From 29ea5bbf5b9c3b3679aa40e4ee7029284cb424c6 Mon Sep 17 00:00:00 2001 From: henryk Date: Sat, 24 Nov 2007 07:59:42 +0000 Subject: Add load modulation and encoding/decoding code from harald git-svn-id: https://svn.openpcd.org:2342/trunk@351 6dc7ffe9-61d6-0310-9af1-9938baff3ed1 --- openpicc/application/decoder.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 openpicc/application/decoder.h (limited to 'openpicc/application/decoder.h') diff --git a/openpicc/application/decoder.h b/openpicc/application/decoder.h new file mode 100644 index 0000000..bd25777 --- /dev/null +++ b/openpicc/application/decoder.h @@ -0,0 +1,32 @@ +#ifndef _DECODER_H +#define _DECODER_H + +struct decoder_state; + +struct decoder_algo { + u_int8_t oversampling_rate; + u_int8_t bits_per_sampled_char; + u_int32_t bytesample_mask; + int (*decode_sample)(const u_int32_t sample, u_int8_t *data); + u_int32_t (*get_next_bytesample)(struct decoder_state *st, u_int8_t *parity_sample); +}; + +struct decoder_state { + struct decoder_algo *algo; + u_int8_t bit_ofs; + const char *buf; + const u_int32_t *buf32; +}; + +extern int decoder_register(int algnum, struct decoder_algo *algo); +extern int decoder_decode(u_int8_t algo, const char *sample_buf, + int sample_buf_size, unsigned char *data_buf); + +#define DECODER_MILLER 0 +#define DECODER_NRZL 1 +#define DECODER_NUM_ALGOS 2 + +extern struct decoder_algo nrzl_decoder; +extern struct decoder_algo miller_decoder; + +#endif -- cgit v1.2.3