From cdb4e730e4f649379b164fe81446eb307053cb3c Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 4 Dec 2003 18:46:49 +0000
Subject: [PATCH] cleanup

Originally committed as revision 2562 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/h263.c      | 49 +++++++++++++++++++-----------------------
 libavcodec/mpegvideo.h |  2 +-
 2 files changed, 23 insertions(+), 28 deletions(-)

diff --git a/libavcodec/h263.c b/libavcodec/h263.c
index ef44751d42..4f3fa13df2 100644
--- a/libavcodec/h263.c
+++ b/libavcodec/h263.c
@@ -1236,7 +1236,7 @@ void h263_encode_mb(MpegEncContext * s,
 }
 #endif
 
-int ff_h263_loop_filter(MpegEncContext * s){
+void ff_h263_loop_filter(MpegEncContext * s){
     int qp_c;
     const int linesize  = s->linesize;
     const int uvlinesize= s->uvlinesize;
@@ -3572,7 +3572,11 @@ static void preview_obmc(MpegEncContext *s){
     }else{
         get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1);
         if (cbpc & 8) {
-            skip_bits(&s->gb, 2);
+            if(s->modified_quant){
+                if(get_bits1(&s->gb)) skip_bits(&s->gb, 1);
+                else                  skip_bits(&s->gb, 5);
+            }else
+                skip_bits(&s->gb, 2);
         }
         
         if ((cbpc & 16) == 0) {
@@ -3624,12 +3628,24 @@ end:
     s->gb= gb;
 }
 
+static void h263_decode_dquant(MpegEncContext *s){
+    static const int8_t quant_tab[4] = { -1, -2, 1, 2 };
+
+    if(s->modified_quant){
+        if(get_bits1(&s->gb))
+            s->qscale= modified_quant_tab[get_bits1(&s->gb)][ s->qscale ];
+        else
+            s->qscale= get_bits(&s->gb, 5);
+    }else
+        s->qscale += quant_tab[get_bits(&s->gb, 2)];
+    ff_set_qscale(s, s->qscale);
+}
+
 int ff_h263_decode_mb(MpegEncContext *s,
                       DCTELEM block[6][64])
 {
     int cbpc, cbpy, i, cbp, pred_x, pred_y, mx, my, dquant;
     int16_t *mot_val;
-    static int8_t quant_tab[4] = { -1, -2, 1, 2 };
     const int xy= s->mb_x + s->mb_y * s->mb_stride;
     
     assert(!s->h263_pred);
@@ -3668,14 +3684,7 @@ int ff_h263_decode_mb(MpegEncContext *s,
         
         cbp = (cbpc & 3) | (cbpy << 2);
         if (dquant) {
-            if(s->modified_quant){
-                if(get_bits1(&s->gb))
-                    s->qscale= modified_quant_tab[get_bits1(&s->gb)][ s->qscale ];
-                else
-                    s->qscale= get_bits(&s->gb, 5);
-            }else
-                s->qscale += quant_tab[get_bits(&s->gb, 2)];
-            ff_set_qscale(s, s->qscale);
+            h263_decode_dquant(s);
         }
         
         s->mv_dir = MV_DIR_FORWARD;
@@ -3783,14 +3792,7 @@ int ff_h263_decode_mb(MpegEncContext *s,
         assert(!s->mb_intra);
 
         if(IS_QUANT(mb_type)){
-            if(s->modified_quant){ //FIXME factorize
-                if(get_bits1(&s->gb))
-                    s->qscale= modified_quant_tab[get_bits1(&s->gb)][ s->qscale ];
-                else
-                    s->qscale= get_bits(&s->gb, 5);
-            }else
-                s->qscale += quant_tab[get_bits(&s->gb, 2)];
-            ff_set_qscale(s, s->qscale);
+            h263_decode_dquant(s);
         }
 
         if(IS_DIRECT(mb_type)){
@@ -3857,14 +3859,7 @@ intra:
         }
         cbp = (cbpc & 3) | (cbpy << 2);
         if (dquant) {
-            if(s->modified_quant){
-                if(get_bits1(&s->gb))
-                    s->qscale= modified_quant_tab[get_bits1(&s->gb)][ s->qscale ];
-                else
-                    s->qscale= get_bits(&s->gb, 5);
-            }else
-                s->qscale += quant_tab[get_bits(&s->gb, 2)];
-            ff_set_qscale(s, s->qscale);
+            h263_decode_dquant(s);
         }
     }
 
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 6ac1fc604c..1842d8cb50 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -857,7 +857,7 @@ int h263_decode_picture_header(MpegEncContext *s);
 int ff_h263_decode_gob_header(MpegEncContext *s);
 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
 void ff_h263_update_motion_val(MpegEncContext * s);
-int ff_h263_loop_filter(MpegEncContext * s);
+void ff_h263_loop_filter(MpegEncContext * s);
 void ff_set_qscale(MpegEncContext * s, int qscale);