-void simple_idct_put(UINT8 *dest, int line_size, INT16 *block);
-void simple_idct_add(UINT8 *dest, int line_size, INT16 *block);
-void ff_simple_idct_mmx(short *block);
-void ff_simple_idct_add_mmx(UINT8 *dest, int line_size, INT16 *block);
-void ff_simple_idct_put_mmx(UINT8 *dest, int line_size, INT16 *block);
-void simple_idct(short *block);
+#ifndef FFMPEG_SIMPLE_IDCT_H
+#define FFMPEG_SIMPLE_IDCT_H
+
+#include <stdint.h>
+#include "dsputil.h"
+
+void ff_simple_idct_put(uint8_t *dest, int line_size, DCTELEM *block);
+void ff_simple_idct_add(uint8_t *dest, int line_size, DCTELEM *block);
+void ff_simple_idct_mmx(int16_t *block);
+void ff_simple_idct_add_mmx(uint8_t *dest, int line_size, int16_t *block);
+void ff_simple_idct_put_mmx(uint8_t *dest, int line_size, int16_t *block);
+void ff_simple_idct(DCTELEM *block);
+
+void ff_simple_idct248_put(uint8_t *dest, int line_size, DCTELEM *block);