simpify state and make code 2% faster

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

1 files changed, 4 insertions, 8 deletions

diff --git a/libavcodec/lzo.c b/libavcodec/lzo.c
index 5fd1f4cc06..d4c19aad5a 100644
--- a/libavcodec/lzo.c
+++ b/libavcodec/lzo.c
@@ -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);