diff --git a/libavcodec/jpegls.c b/libavcodec/jpegls.c
index dc5c9cfab1..e3e81c4497 100644
--- a/libavcodec/jpegls.c
+++ b/libavcodec/jpegls.c
@@ -31,16 +31,16 @@ void ff_jpegls_init_state(JLSState *state){
     int i;
 
     state->twonear = state->near * 2 + 1;
-    state->range = ((state->maxval + state->twonear - 1) / state->twonear) + 1;
+    state->range   = (state->maxval + state->twonear - 1) / state->twonear + 1;
 
     // QBPP = ceil(log2(RANGE))
     for(state->qbpp = 0; (1 << state->qbpp) < state->range; state->qbpp++);
 
-    state->bpp = FFMAX(av_log2(state->maxval)+1, 2);
+    state->bpp   = FFMAX(av_log2(state->maxval) + 1, 2);
     state->limit = 2*(state->bpp + FFMAX(state->bpp, 8)) - state->qbpp;
 
     for(i = 0; i < 367; i++) {
-        state->A[i] = FFMAX((state->range + 32) >> 6, 2);
+        state->A[i] = FFMAX(state->range + 32 >> 6, 2);
         state->N[i] = 1;
     }
 
@@ -63,7 +63,7 @@ void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all){
     if(s->maxval==0 || reset_all) s->maxval= (1 << s->bpp) - 1;
 
     if(s->maxval >=128){
-        factor= (FFMIN(s->maxval, 4095) + 128)>>8;
+        factor = FFMIN(s->maxval, 4095) + 128 >> 8;
 
         if(s->T1==0     || reset_all)
             s->T1= iso_clip(factor*(basic_t1-2) + 2 + 3*s->near, s->near+1, s->maxval);
diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c
index 516a82fc90..dd971ccc26 100644
--- a/libavcodec/jpeglsdec.c
+++ b/libavcodec/jpeglsdec.c
@@ -98,7 +98,7 @@ static inline int ls_get_code_regular(GetBitContext *gb, JLSState *state, int Q)
 
     /* decode mapped error */
     if(ret & 1)
-        ret = -((ret + 1) >> 1);
+        ret = -(ret + 1 >> 1);
     else
         ret >>= 1;
 
@@ -136,7 +136,7 @@ static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RI
     ret += RItype + map;
 
     if(ret & 1){
-        ret = map - ((ret + 1) >> 1);
+        ret = map - (ret + 1 >> 1);
         state->B[Q]++;
     } else {
         ret = ret >> 1;
@@ -186,7 +186,7 @@ static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s, void *
                     x += stride;
                 }
                 /* if EOL reached, we stop decoding */
-                if(r != (1 << ff_log2_run[state->run_index[comp]]))
+                if (r != 1 << ff_log2_run[state->run_index[comp]])
                     return;
                 if(state->run_index[comp] < 31)
                     state->run_index[comp]++;
diff --git a/libavcodec/jpeglsenc.c b/libavcodec/jpeglsenc.c
index be979aa371..c966af6708 100644
--- a/libavcodec/jpeglsenc.c
+++ b/libavcodec/jpeglsenc.c
@@ -49,7 +49,7 @@ static inline void ls_encode_regular(JLSState *state, PutBitContext *pb, int Q,
 
     if(err < 0)
         err += state->range;
-    if(err >= ((state->range + 1) >> 1)) {
+    if (err >= (state->range + 1 >> 1)) {
         err -= state->range;
         val = 2 * FFABS(err) - 1 - map;
     } else
@@ -145,7 +145,7 @@ static inline void ls_encode_line(JLSState *state, PutBitContext *pb, void *last
             if(x >= w)
                 return;
             Rb = R(last, x);
-            RItype = (FFABS(Ra - Rb) <= state->near);
+            RItype = FFABS(Ra - Rb) <= state->near;
             pred = RItype ? Ra : Rb;
             err = R(cur, x) - pred;
 
@@ -166,7 +166,7 @@ static inline void ls_encode_line(JLSState *state, PutBitContext *pb, void *last
             }
             if(err < 0)
                 err += state->range;
-            if(err >= ((state->range + 1) >> 1))
+            if (err >= state->range + 1 >> 1)
                 err -= state->range;
 
             ls_encode_runterm(state, pb, RItype, err, ff_log2_run[state->run_index[comp]]);
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index f63bf1275f..c4455ac52d 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -60,7 +60,6 @@ static void dct_unquantize_h263_intra_c(MpegEncContext *s,
 static void dct_unquantize_h263_inter_c(MpegEncContext *s,
                                   int16_t *block, int n, int qscale);
 
-
 //#define DEBUG
 
 
diff --git a/libavcodec/x86/mpegvideo.c b/libavcodec/x86/mpegvideo.c
index f6db8c85d9..f8cabe5ddb 100644
--- a/libavcodec/x86/mpegvideo.c
+++ b/libavcodec/x86/mpegvideo.c
@@ -164,28 +164,6 @@ __asm__ volatile(
         );
 }
 
-
-/*
-  We can suppose that result of two multiplications can't be greater than 0xFFFF
-  i.e. is 16-bit, so we use here only PMULLW instruction and can avoid
-  a complex multiplication.
-=====================================================
- Full formula for multiplication of 2 integer numbers
- which are represent as high:low words:
- input: value1 = high1:low1
-        value2 = high2:low2
- output: value3 = value1*value2
- value3=high3:low3 (on overflow: modulus 2^32 wrap-around)
- this mean that for 0x123456 * 0x123456 correct result is 0x766cb0ce4
- but this algorithm will compute only 0x66cb0ce4
- this limited by 16-bit size of operands
- ---------------------------------
- tlow1 = high1*low2
- tlow2 = high2*low1
- tlow1 = tlow1 + tlow2
- high3:low3 = low1*low2
- high3 += tlow1
-*/
 static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,
                                      int16_t *block, int n, int qscale)
 {