avcodec/dirac: Include used headers directly

Don't include them implicitly via avcodec.h. This avoids
indirect avcodec.h inclusions in lavc/dirac.c, lavf/oggparsedirac.c,
and lavf/rtp(dec|enc)_vc2hq.c.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/dirac.c

@@ -26,9 +26,12 @@
  * @author Marco Gerards <marco@gnu.org>, David Conrad, Jordi Ortiz <nenjordi@gmail.com>
  */
 
+#include "config.h"
+
 #include "libavutil/pixdesc.h"
 
 #include "dirac.h"
+#include "get_bits.h"
 #include "golomb.h"
 #include "mpeg12data.h"
 

libavcodec/dirac.h

@@ -31,7 +31,11 @@
  * @author Jordi Ortiz
  */
 
-#include "avcodec.h"
+#include <stddef.h>
+#include <stdint.h>
+
+#include "libavutil/pixfmt.h"
+#include "libavutil/rational.h"
 
 /**
  * The spec limits the number of wavelet decompositions to 4 for both