@@ -353,6 +353,7 @@ ByteIOContext *av_alloc_put_byte(

                   int64_t (*seek)(void *opaque, int64_t offset, int whence));

 void put_byte(ByteIOContext *s, int b);

+void put_nbyte(ByteIOContext *s, int b, int count);

 void put_buffer(ByteIOContext *s, const unsigned char *buf, int size);

 void put_le64(ByteIOContext *s, uint64_t val);

 void put_be64(ByteIOContext *s, uint64_t val);

@@ -113,6 +113,20 @@ void put_byte(ByteIOContext *s, int b)

         flush_buffer(s);

 }

+void put_nbyte(ByteIOContext *s, int b, int count)

+{

+    while (count > 0) {

+        int len = FFMIN(s->buf_end - s->buf_ptr, count);

+        memset(s->buf_ptr, b, len);

+        s->buf_ptr += len;

+

+        if (s->buf_ptr >= s->buf_end)

+            flush_buffer(s);

+

+        count -= len;

+    }

+}

+

 void put_buffer(ByteIOContext *s, const unsigned char *buf, int size)

 {

     while (size > 0) {