Move pixdesc.{h,c} from libavcodec to libavutil.

This way pixdescs can be used without requiring a dependency on
libavcodec.

Originally committed as revision 20389 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/pixdesc.c → libavutil/pixdesc.c

@@ -19,7 +19,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include "libavutil/pixfmt.h"
+#include "pixfmt.h"
 #include "pixdesc.h"
 
 const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {

libavcodec/pixdesc.h → libavutil/pixdesc.h

@@ -19,12 +19,12 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef AVCODEC_PIXDESC_H
-#define AVCODEC_PIXDESC_H
+#ifndef AVUTIL_PIXDESC_H
+#define AVUTIL_PIXDESC_H
 
 #include <inttypes.h>
 
-#include "libavutil/intreadwrite.h"
+#include "intreadwrite.h"
 
 typedef struct AVComponentDescriptor{
     uint16_t plane        :2;            ///< which of the 4 planes contains the component
@@ -204,4 +204,4 @@ static inline void write_line(const uint16_t *src, uint8_t *data[4], const int l
  */
 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc);
 
-#endif /* AVCODEC_PIXDESC_H */
+#endif /* AVUTIL_PIXDESC_H */