Make set coup.gain[c][0] aand only coup.gain[c][0] is set for a independently switched CCE.

Discussed/OKed at http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2009-February/062219.html

Originally committed as revision 17210 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/aac.c

@@ -1165,6 +1165,9 @@ static int decode_cce(AACContext * ac, GetBitContext * gb, ChannelElement * che)
             gain = cge ? get_vlc2(gb, vlc_scalefactors.table, 7, 3) - 60: 0;
             gain_cache = pow(scale, -gain);
         }
+        if (coup->coupling_point == AFTER_IMDCT) {
+            coup->gain[c][0] = gain_cache;
+        } else {
         for (g = 0; g < sce->ics.num_window_groups; g++) {
             for (sfb = 0; sfb < sce->ics.max_sfb; sfb++, idx++) {
                 if (sce->band_type[idx] != ZERO_BT) {
@@ -1185,6 +1188,7 @@ static int decode_cce(AACContext * ac, GetBitContext * gb, ChannelElement * che)
             }
         }
         }
+    }
     return 0;
 }