libavcodec/dsputil.h

   1 #ifndef DSPUTIL_H
   2 #define DSPUTIL_H
   3
   4 #include "common.h"
   5 #include <inttypes.h>
   6
   7 /* dct code */
   8 typedef short DCTELEM;
   9
  10 void jpeg_fdct_ifast (DCTELEM *data);
  11
  12 void j_rev_dct (DCTELEM *data);
  13
  14 void fdct_mmx(DCTELEM *block);
  15
  16 void (*av_fdct)(DCTELEM *block);
  17
  18 /* encoding scans */
  19 extern UINT8 ff_alternate_horizontal_scan[64];
  20 extern UINT8 ff_alternate_vertical_scan[64];
  21 extern UINT8 zigzag_direct[64];
  22
  23 /* pixel operations */
  24 #define MAX_NEG_CROP 384
  25
  26 /* temporary */
  27 extern UINT32 squareTbl[512];
  28 extern UINT8 cropTbl[256 + 2 * MAX_NEG_CROP];
  29
  30 void dsputil_init(void);
  31
  32 /* pixel ops : interface with DCT */
  33
  34 extern void (*ff_idct)(DCTELEM *block);
  35 extern void (*get_pixels)(DCTELEM *block, const UINT8 *pixels, int line_size);
  36 extern void (*put_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
  37 extern void (*add_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
  38
  39 void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size);
  40 void put_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
  41 void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
  42
  43 /* add and put pixel (decoding) */
  44 typedef void (*op_pixels_func)(UINT8 *block, const UINT8 *pixels, int line_size, int h);
  45
  46 extern op_pixels_func put_pixels_tab[4];
  47 extern op_pixels_func avg_pixels_tab[4];
  48 extern op_pixels_func put_no_rnd_pixels_tab[4];
  49 extern op_pixels_func avg_no_rnd_pixels_tab[4];
  50
  51 /* sub pixel (encoding) */
  52 extern void (*sub_pixels_tab[4])(DCTELEM *block, const UINT8 *pixels, int line_size, int h);
  53
  54 #define sub_pixels_2(block, pixels, line_size, dxy) \
  55    sub_pixels_tab[dxy](block, pixels, line_size, 8)
  56
  57 /* motion estimation */
  58
  59 typedef int (*op_pixels_abs_func)(UINT8 *blk1, UINT8 *blk2, int line_size, int h);
  60
  61 extern op_pixels_abs_func pix_abs16x16;
  62 extern op_pixels_abs_func pix_abs16x16_x2;
  63 extern op_pixels_abs_func pix_abs16x16_y2;
  64 extern op_pixels_abs_func pix_abs16x16_xy2;
  65
  66 int pix_abs16x16_c(UINT8 *blk1, UINT8 *blk2, int lx, int h);
  67 int pix_abs16x16_x2_c(UINT8 *blk1, UINT8 *blk2, int lx, int h);
  68 int pix_abs16x16_y2_c(UINT8 *blk1, UINT8 *blk2, int lx, int h);
  69 int pix_abs16x16_xy2_c(UINT8 *blk1, UINT8 *blk2, int lx, int h);
  70
  71 static inline int block_permute_op(int j)
  72 {
  73     return (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
  74 }
  75
  76 void block_permute(INT16 *block);
  77
  78 #ifdef HAVE_MMX
  79
  80 #define MM_MMX    0x0001 /* standard MMX */
  81 #define MM_3DNOW  0x0004 /* AMD 3DNOW */
  82 #define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
  83 #define MM_SSE    0x0008 /* SSE functions */
  84 #define MM_SSE2   0x0010 /* PIV SSE2 functions */
  85
  86 extern int mm_flags;
  87
  88 int mm_support(void);
  89
  90 static inline void emms(void)
  91 {
  92     __asm __volatile ("emms;":::"memory");
  93 }
  94
  95 #define emms_c() \
  96 {\
  97     if (mm_flags & MM_MMX)\
  98         emms();\
  99 }
 100
 101 #define __align8 __attribute__ ((aligned (8)))
 102
 103 void dsputil_init_mmx(void);
 104
 105 #else
 106
 107 #define emms_c()
 108
 109 #define __align8
 110
 111 #endif
 112
 113 #endif