diff options
| author | Dongsheng Yang <yangds.fnst@cn.fujitsu.com> | 2015-10-31 11:12:01 +0800 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2015-11-11 14:38:40 -0800 |
| commit | 7d81790ced345585b1e647ca9d0f6678e7062fa4 (patch) | |
| tree | 02f61270c7a0fff7bb6b2e28f247a3d2fd6ff490 /misc-utils/mcast_image.h | |
| parent | 344753f2aacb94d98ce238f81fc4a4b6ef6adea9 (diff) | |
mtd-utils: Restructure the mtd-utils source.
* There is no code modification in this commit, only moving
* the files to proper place.
The user tools looks a little messy as we place almost
the all tools in the root directory of mtd-utils. To make
it more clear, I propose to introduce the following structure
for our source code.
mtd-utils/
|-- lib
|-- include
|-- misc-utils
|-- jffsX-utils
|-- nand-utils
|-- nor-utils
|-- ubi-utils
|-- ubifs-utils
`-- tests
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'misc-utils/mcast_image.h')
| -rw-r--r-- | misc-utils/mcast_image.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/misc-utils/mcast_image.h b/misc-utils/mcast_image.h new file mode 100644 index 0000000..8e94ffa --- /dev/null +++ b/misc-utils/mcast_image.h @@ -0,0 +1,54 @@ +#include <stdint.h> + +#define PKT_SIZE 2820 + +struct image_pkt_hdr { + uint32_t resend; + uint32_t totcrc; + uint32_t nr_blocks; + uint32_t blocksize; + uint32_t block_crc; + uint32_t block_nr; + uint32_t pkt_sequence; + uint16_t pkt_nr; + uint16_t nr_pkts; + uint32_t thislen; + uint32_t thiscrc; +}; + +struct image_pkt { + struct image_pkt_hdr hdr; + unsigned char data[PKT_SIZE]; +}; + +struct fec_parms; + +/* k - number of actual data packets + * n - total number of packets including data and redundant packets + * (actual packet size isn't relevant here) */ +struct fec_parms *fec_new(int k, int n); +void fec_free(struct fec_parms *p); + +/* src - array of (n) pointers to data packets + * fec - buffer for packet to be generated + * index - index of packet to be generated (0 <= index < n) + * sz - data packet size + * + * _linear version just takes a pointer to the raw data; no + * mucking about with packet pointers. + */ +void fec_encode(struct fec_parms *code, unsigned char *src[], + unsigned char *fec, int index, int sz); +void fec_encode_linear(struct fec_parms *code, unsigned char *src, + unsigned char *fec, int index, int sz); + +/* data - array of (k) pointers to data packets, in arbitrary order (see i) + * i - indices of (data) packets + * sz - data packet size + * + * Will never fail as long as you give it (k) individual data packets. + * Will re-order the (data) pointers but not the indices -- data packets + * are ordered on return. + */ +int fec_decode(struct fec_parms *code, unsigned char *data[], + int i[], int sz); |