aboutsummaryrefslogtreecommitdiffstats
path: root/fs/jffs2/compr_rubin.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/jffs2/compr_rubin.c')
-rw-r--r--fs/jffs2/compr_rubin.c37
1 files changed, 18 insertions, 19 deletions
diff --git a/fs/jffs2/compr_rubin.c b/fs/jffs2/compr_rubin.c
index 0942238..e792e67 100644
--- a/fs/jffs2/compr_rubin.c
+++ b/fs/jffs2/compr_rubin.c
@@ -11,7 +11,6 @@
*
*/
-
#include <linux/string.h>
#include <linux/types.h>
#include <linux/jffs2.h>
@@ -20,7 +19,7 @@
#include "compr.h"
static void init_rubin(struct rubin_state *rs, int div, int *bits)
-{
+{
int c;
rs->q = 0;
@@ -40,7 +39,7 @@ static int encode(struct rubin_state *rs, long A, long B, int symbol)
while ((rs->q >= UPPER_BIT_RUBIN) || ((rs->p + rs->q) <= UPPER_BIT_RUBIN)) {
rs->bit_number++;
-
+
ret = pushbit(&rs->pp, (rs->q & UPPER_BIT_RUBIN) ? 1 : 0, 0);
if (ret)
return ret;
@@ -68,7 +67,7 @@ static int encode(struct rubin_state *rs, long A, long B, int symbol)
static void end_rubin(struct rubin_state *rs)
-{
+{
int i;
@@ -82,7 +81,7 @@ static void end_rubin(struct rubin_state *rs)
static void init_decode(struct rubin_state *rs, int div, int *bits)
{
- init_rubin(rs, div, bits);
+ init_rubin(rs, div, bits);
/* behalve lower */
rs->rec_q = 0;
@@ -188,7 +187,7 @@ static int in_byte(struct rubin_state *rs)
-static int rubin_do_compress(int bit_divider, int *bits, unsigned char *data_in,
+static int rubin_do_compress(int bit_divider, int *bits, unsigned char *data_in,
unsigned char *cpage_out, uint32_t *sourcelen, uint32_t *dstlen)
{
int outpos = 0;
@@ -198,31 +197,31 @@ static int rubin_do_compress(int bit_divider, int *bits, unsigned char *data_in,
init_pushpull(&rs.pp, cpage_out, *dstlen * 8, 0, 32);
init_rubin(&rs, bit_divider, bits);
-
+
while (pos < (*sourcelen) && !out_byte(&rs, data_in[pos]))
pos++;
-
+
end_rubin(&rs);
if (outpos > pos) {
/* We failed */
return -1;
}
-
- /* Tell the caller how much we managed to compress,
+
+ /* Tell the caller how much we managed to compress,
* and how much space it took */
-
+
outpos = (pushedbits(&rs.pp)+7)/8;
-
+
if (outpos >= pos)
return -1; /* We didn't actually compress */
*sourcelen = pos;
*dstlen = outpos;
return 0;
-}
+}
#if 0
/* _compress returns the compressed size, -1 if bigger */
-int jffs2_rubinmips_compress(unsigned char *data_in, unsigned char *cpage_out,
+int jffs2_rubinmips_compress(unsigned char *data_in, unsigned char *cpage_out,
uint32_t *sourcelen, uint32_t *dstlen, void *model)
{
return rubin_do_compress(BIT_DIVIDER_MIPS, bits_mips, data_in, cpage_out, sourcelen, dstlen);
@@ -277,7 +276,7 @@ static int jffs2_dynrubin_compress(unsigned char *data_in,
}
ret = rubin_do_compress(256, bits, data_in, cpage_out+8, &mysrclen, &mydstlen);
- if (ret)
+ if (ret)
return ret;
/* Add back the 8 bytes we took for the probabilities */
@@ -293,19 +292,19 @@ static int jffs2_dynrubin_compress(unsigned char *data_in,
return 0;
}
-static void rubin_do_decompress(int bit_divider, int *bits, unsigned char *cdata_in,
+static void rubin_do_decompress(int bit_divider, int *bits, unsigned char *cdata_in,
unsigned char *page_out, uint32_t srclen, uint32_t destlen)
{
int outpos = 0;
struct rubin_state rs;
-
+
init_pushpull(&rs.pp, cdata_in, srclen, 0, 0);
init_decode(&rs, bit_divider, bits);
-
+
while (outpos < destlen) {
page_out[outpos++] = in_byte(&rs);
}
-}
+}
static int jffs2_rubinmips_decompress(unsigned char *data_in,