fix assertion failure

Originally committed as revision 9152 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 7 insertions, 0 deletions

diff --git a/libavcodec/rangecoder.h b/libavcodec/rangecoder.h
index 68bd3b60e4..3aac8c6238 100644
--- a/libavcodec/rangecoder.h
+++ b/libavcodec/rangecoder.h
@@ -66,6 +66,13 @@ static inline void renorm_encoder(RangeCoder *c){
     }
 }
 
+static inline int get_rac_count(RangeCoder *c){
+    int x= c->bytestream - c->bytestream_start + c->outstanding_count;
+    if(c->outstanding_byte >= 0)
+        x++;
+    return 8*x - av_log2(c->range);
+}
+
 static inline void put_rac(RangeCoder *c, uint8_t * const state, int bit){
     int range1= (c->range * (*state)) >> 8;