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ffmpeg / libavcodec / dsputil.h @ 05f361f0

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#ifndef DSPUTIL_H
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#define DSPUTIL_H
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#include "common.h"
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/* dct code */
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typedef short DCTELEM;
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void jpeg_fdct_ifast (DCTELEM *data);
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void j_rev_dct (DCTELEM *data);
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void fdct_mmx(DCTELEM *block);
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void (*av_fdct)(DCTELEM *block);
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/* encoding scans */
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extern UINT8 ff_alternate_horizontal_scan[64];
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extern UINT8 ff_alternate_vertical_scan[64];
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extern UINT8 zigzag_direct[64];
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/* permutation table */
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extern UINT8 permutation[64];
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/* pixel operations */
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#define MAX_NEG_CROP 384
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/* temporary */
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extern UINT32 squareTbl[512];
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extern UINT8 cropTbl[256 + 2 * MAX_NEG_CROP];
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void dsputil_init(void);
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/* pixel ops : interface with DCT */
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extern void (*ff_idct)(DCTELEM *block);
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extern void (*get_pixels)(DCTELEM *block, const UINT8 *pixels, int line_size);
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extern void (*put_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
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extern void (*add_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
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void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size);
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void put_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
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void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
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/* add and put pixel (decoding) */
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typedef void (*op_pixels_func)(UINT8 *block, const UINT8 *pixels, int line_size, int h);
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extern op_pixels_func put_pixels_tab[4];
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extern op_pixels_func avg_pixels_tab[4];
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extern op_pixels_func put_no_rnd_pixels_tab[4];
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extern op_pixels_func avg_no_rnd_pixels_tab[4];
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/* sub pixel (encoding) */
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extern void (*sub_pixels_tab[4])(DCTELEM *block, const UINT8 *pixels, int line_size, int h);
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#define sub_pixels_2(block, pixels, line_size, dxy) \
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   sub_pixels_tab[dxy](block, pixels, line_size, 8)
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/* motion estimation */
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typedef int (*op_pixels_abs_func)(UINT8 *blk1, UINT8 *blk2, int line_size, int h);
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extern op_pixels_abs_func pix_abs16x16;
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extern op_pixels_abs_func pix_abs16x16_x2;
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extern op_pixels_abs_func pix_abs16x16_y2;
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extern op_pixels_abs_func pix_abs16x16_xy2;
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int pix_abs16x16_c(UINT8 *blk1, UINT8 *blk2, int lx, int h);
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int pix_abs16x16_x2_c(UINT8 *blk1, UINT8 *blk2, int lx, int h);
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int pix_abs16x16_y2_c(UINT8 *blk1, UINT8 *blk2, int lx, int h);
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int pix_abs16x16_xy2_c(UINT8 *blk1, UINT8 *blk2, int lx, int h);
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static inline int block_permute_op(int j)
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{
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        return permutation[j];
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}
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void block_permute(INT16 *block);
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#if defined(HAVE_MMX)
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#define MM_MMX    0x0001 /* standard MMX */
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#define MM_3DNOW  0x0004 /* AMD 3DNOW */
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#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
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#define MM_SSE    0x0008 /* SSE functions */
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#define MM_SSE2   0x0010 /* PIV SSE2 functions */
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extern int mm_flags;
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int mm_support(void);
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static inline void emms(void)
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{
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    __asm __volatile ("emms;":::"memory");
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}
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#define emms_c() \
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{\
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    if (mm_flags & MM_MMX)\
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        emms();\
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}
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#define __align8 __attribute__ ((aligned (8)))
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void dsputil_init_mmx(void);
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#elif defined(ARCH_ARMV4L)
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#define emms_c()
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/* This is to use 4 bytes read to the IDCT pointers for some 'zero'
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   line ptimizations */
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#define __align8 __attribute__ ((aligned (4)))
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void dsputil_init_armv4l(void);   
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#elif defined(HAVE_MLIB)
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#define emms_c()
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/* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
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#define __align8 __attribute__ ((aligned (8)))
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void dsputil_init_mlib(void);   
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#else
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#define emms_c()
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#define __align8
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#endif
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#endif