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/*
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 * DSP utils
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 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
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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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#include "avcodec.h"
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//#define DEBUG
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/* dct code */
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typedef short DCTELEM;
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void 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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extern 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 (*ff_idct_put)(UINT8 *dest, int line_size, DCTELEM *block);
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extern void (*ff_idct_add)(UINT8 *dest, int line_size, DCTELEM *block);
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extern void (*get_pixels)(DCTELEM *block, const UINT8 *pixels, int line_size);
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extern void (*diff_pixels)(DCTELEM *block, const UINT8 *s1, const UINT8 *s2, int stride);
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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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extern void (*gmc1)(UINT8 *dst, UINT8 *src, int srcStride, int h, int x16, int y16, int rounder);
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extern void (*clear_blocks)(DCTELEM *blocks);
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void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size);
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void diff_pixels_c(DCTELEM *block, const UINT8 *s1, const UINT8 *s2, int stride);
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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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void clear_blocks_c(DCTELEM *blocks);
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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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typedef void (*qpel_mc_func)(UINT8 *dst, UINT8 *src, int dstStride, int srcStride, int mx, int my);
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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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extern qpel_mc_func qpel_mc_rnd_tab[16];
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extern qpel_mc_func qpel_mc_no_rnd_tab[16];
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/* motion estimation */
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typedef int (*op_pixels_abs_func)(UINT8 *blk1, UINT8 *blk2, int line_size);
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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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extern op_pixels_abs_func pix_abs8x8;
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extern op_pixels_abs_func pix_abs8x8_x2;
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extern op_pixels_abs_func pix_abs8x8_y2;
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extern op_pixels_abs_func pix_abs8x8_xy2;
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int pix_abs16x16_c(UINT8 *blk1, UINT8 *blk2, int lx);
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int pix_abs16x16_x2_c(UINT8 *blk1, UINT8 *blk2, int lx);
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int pix_abs16x16_y2_c(UINT8 *blk1, UINT8 *blk2, int lx);
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int pix_abs16x16_xy2_c(UINT8 *blk1, UINT8 *blk2, int lx);
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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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void dsputil_set_bit_exact_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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#elif defined(ARCH_ALPHA)
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#define emms_c()
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#define __align8 __attribute__ ((aligned (8)))
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void dsputil_init_alpha(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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#ifdef __GNUC__
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struct unaligned_64 { uint64_t l; } __attribute__((packed));
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struct unaligned_32 { uint32_t l; } __attribute__((packed));
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#define LD32(a) (((const struct unaligned_32 *) (a))->l)
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#define LD64(a) (((const struct unaligned_64 *) (a))->l)
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#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
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#else /* __GNUC__ */
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#define LD32(a) (*((uint32_t*)(a)))
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#define LD64(a) (*((uint64_t*)(a)))
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#define ST32(a, b) *((uint32_t*)(a)) = (b)
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#endif /* !__GNUC__ */
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/* PSNR */
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void get_psnr(UINT8 *orig_image[3], UINT8 *coded_image[3],
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              int orig_linesize[3], int coded_linesize,
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              AVCodecContext *avctx);
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#endif