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d87eeae5ce
- based on mtd-utils http://git.infradead.org/mtd-utils.git
commit ab8c6fb93ce9db0f09401c4b819b0b277dc00340 (2013-07-01)
- Add files for create jffs2 image and using sumtool
- Creating classes for mkfs.jffs2 and sumtool
Origin commit data
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Commit: d8957d17ac
Author: Michael Liebmann <tuxcode.bbg@gmail.com>
Date: 2013-09-01 (Sun, 01 Sep 2013)
Origin message was:
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src/system/mtdutils: Add files from mtd-utils
- based on mtd-utils http://git.infradead.org/mtd-utils.git
commit ab8c6fb93ce9db0f09401c4b819b0b277dc00340 (2013-07-01)
- Add files for create jffs2 image and using sumtool
- Creating classes for mkfs.jffs2 and sumtool
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
#include <stdint.h>
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#define PKT_SIZE 2820
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struct image_pkt_hdr {
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uint32_t resend;
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uint32_t totcrc;
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uint32_t nr_blocks;
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uint32_t blocksize;
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uint32_t block_crc;
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uint32_t block_nr;
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uint32_t pkt_sequence;
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uint16_t pkt_nr;
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uint16_t nr_pkts;
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uint32_t thislen;
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uint32_t thiscrc;
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};
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struct image_pkt {
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struct image_pkt_hdr hdr;
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unsigned char data[PKT_SIZE];
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};
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struct fec_parms;
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/* k - number of actual data packets
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* n - total number of packets including data and redundant packets
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* (actual packet size isn't relevant here) */
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struct fec_parms *fec_new(int k, int n);
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void fec_free(struct fec_parms *p);
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/* src - array of (n) pointers to data packets
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* fec - buffer for packet to be generated
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* index - index of packet to be generated (0 <= index < n)
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* sz - data packet size
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*
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* _linear version just takes a pointer to the raw data; no
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* mucking about with packet pointers.
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*/
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void fec_encode(struct fec_parms *code, unsigned char *src[],
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unsigned char *fec, int index, int sz);
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void fec_encode_linear(struct fec_parms *code, unsigned char *src,
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unsigned char *fec, int index, int sz);
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/* data - array of (k) pointers to data packets, in arbitrary order (see i)
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* i - indices of (data) packets
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* sz - data packet size
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*
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* Will never fail as long as you give it (k) individual data packets.
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* Will re-order the (data) pointers but not the indices -- data packets
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* are ordered on return.
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*/
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int fec_decode(struct fec_parms *code, unsigned char *data[],
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int i[], int sz);
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