dump bits per frame / qp / frame complexity support

Originally committed as revision 827 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h263dec.c

@@ -154,7 +154,13 @@ uint64_t time= rdtsc();
         ret = h263_decode_picture_header(s);
     }
     avctx->has_b_frames= s->has_b_frames;
-
+#if 0 // dump bits per frame / qp / complexity
+{
+    static FILE *f=NULL;
+    if(!f) f=fopen("rate_qp_cplx.txt", "w");
+    fprintf(f, "%d %d %f\n", buf_size, s->qscale, buf_size/(double)s->qscale);
+}
+#endif
        
         /* After H263 & mpeg4 header decode we have the height, width,*/
         /* and other parameters. So then we could init the picture   */