generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

simpify state and make code 2% faster

Browse Source 
reimar, dont hesitate to flame me for not sending patches and feel free to revert any or all of my changes to lzo.c if you dont like them

Originally committed as revision 7778 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-01-31 10:34:13 +00:00
parent 5fe9c42ceb
commit bf47272f3c
1 changed files with 4 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
libavcodec/lzo.c
View File

@ -168,7 +168,7 @@ static inline void copy_backptr(LZOContext *c, int back, int cnt) {
* LZO_INPUT_PADDING, out must provide LZO_OUTPUT_PADDING additional bytes
*/
int lzo1x_decode(void *out, int *outlen, void *in, int *inlen) {
enum {COPY, BACKPTR} state = COPY;
int state= 0;
int x;
LZOContext c;
c.in = in;
@ -205,9 +205,7 @@ int lzo1x_decode(void *out, int *outlen, void *in, int *inlen) {
break;
}
}
} else
switch (state) {
case COPY:
} else if(!state){
cnt = get_len(&c, x, 15);
copy(&c, cnt + 3);
x = GETB(c);
@ -219,15 +217,13 @@ int lzo1x_decode(void *out, int *outlen, void *in, int *inlen) {
continue;
cnt = 1;
back = (1 << 11) + (GETB(c) << 2) + (x >> 2) + 1;
break;
case BACKPTR:
} else {
cnt = 0;
back = (GETB(c) << 2) + (x >> 2) + 1;
break;
}
copy_backptr(&c, back, cnt + 2);
state=
cnt = x & 3;
state = cnt ? BACKPTR : COPY;
if (cnt)
copy(&c, cnt);
x = GETB(c);