Directly #include some required headers.

Originally committed as revision 16780 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/avcodec.h

@@ -26,7 +26,7 @@
  * external API header
  */
 
-
+#include <errno.h>
 #include "libavutil/avutil.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 52

libavcodec/bytestream.h

@@ -22,6 +22,7 @@
 #ifndef AVCODEC_BYTESTREAM_H
 #define AVCODEC_BYTESTREAM_H
 
+#include <string.h>
 #include "libavutil/common.h"
 #include "libavutil/intreadwrite.h"
 

libavcodec/mpegvideo_common.h

@@ -30,6 +30,7 @@
 #ifndef AVCODEC_MPEGVIDEO_COMMON_H
 #define AVCODEC_MPEGVIDEO_COMMON_H
 
+#include <string.h>
 #include "avcodec.h"
 #include "dsputil.h"
 #include "mpegvideo.h"

libavformat/mxf.h

@@ -21,6 +21,7 @@
 #ifndef AVFORMAT_MXF_H
 #define AVFORMAT_MXF_H
 
+#include <string.h>
 #include "avformat.h"
 #include "libavcodec/bytestream.h"
 

libpostproc/postprocess_internal.h

@@ -26,6 +26,7 @@
 #ifndef POSTPROCESS_POSTPROCESS_INTERNAL_H
 #define POSTPROCESS_POSTPROCESS_INTERNAL_H
 
+#include <string.h>
 #include "libavutil/avutil.h"
 #include "postprocess.h"