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FFmpeg/libavcodec/dsputil.h
Brian Foley 404d2241ec altivec accelerated v-resample patch by (Brian Foley <bfoley at compsoc dot nuigalway dot ie>) 
Originally committed as revision 1283 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-11-26 09:21:01 +00:00

295 lines
9.2 KiB
C
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/*
* DSP utils
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef DSPUTIL_H
#define DSPUTIL_H
#include "common.h"
#include "avcodec.h"
//#define DEBUG
/* dct code */
typedef short DCTELEM;
void fdct_ifast (DCTELEM *data);
void ff_jpeg_fdct_islow (DCTELEM *data);
void j_rev_dct (DCTELEM *data);
void ff_fdct_mmx(DCTELEM *block);
/* encoding scans */
extern const UINT8 ff_alternate_horizontal_scan[64];
extern const UINT8 ff_alternate_vertical_scan[64];
extern const UINT8 ff_zigzag_direct[64];
/* pixel operations */
#define MAX_NEG_CROP 384
/* temporary */
extern UINT32 squareTbl[512];
extern UINT8 cropTbl[256 + 2 * MAX_NEG_CROP];
/* minimum alignment rules ;)
if u notice errors in the align stuff, need more alignment for some asm code for some cpu
or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
!warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
!future video codecs might need functions with less strict alignment
*/
/*
void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size);
void diff_pixels_c(DCTELEM *block, const UINT8 *s1, const UINT8 *s2, int stride);
void put_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
void clear_blocks_c(DCTELEM *blocks);
*/
/* add and put pixel (decoding) */
// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
typedef void (*op_pixels_func)(UINT8 *block/*align width (8 or 16)*/, const UINT8 *pixels/*align 1*/, int line_size, int h);
typedef void (*qpel_mc_func)(UINT8 *dst/*align width (8 or 16)*/, UINT8 *src/*align 1*/, int stride);
#define CALL_2X_PIXELS(a, b, n)\
static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
b(block , pixels , line_size, h);\
b(block+n, pixels+n, line_size, h);\
}
/* motion estimation */
typedef int (*op_pixels_abs_func)(UINT8 *blk1/*align width (8 or 16)*/, UINT8 *blk2/*align 1*/, int line_size);
/*
int pix_abs16x16_c(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_x2_c(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_y2_c(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_xy2_c(UINT8 *blk1, UINT8 *blk2, int lx);
*/
typedef struct DSPContext {
/* pixel ops : interface with DCT */
void (*get_pixels)(DCTELEM *block/*align 16*/, const UINT8 *pixels/*align 8*/, int line_size);
void (*diff_pixels)(DCTELEM *block/*align 16*/, const UINT8 *s1/*align 8*/, const UINT8 *s2/*align 8*/, int stride);
void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, UINT8 *pixels/*align 8*/, int line_size);
void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, UINT8 *pixels/*align 8*/, int line_size);
void (*gmc1)(UINT8 *dst/*align 8*/, UINT8 *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
void (*gmc )(UINT8 *dst/*align 8*/, UINT8 *src/*align 1*/, int stride, int h, int ox, int oy,
int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
int (*pix_sum)(UINT8 * pix, int line_size);
int (*pix_norm1)(UINT8 * pix, int line_size);
int (*pix_norm)(UINT8 * pix1, UINT8 * pix2, int line_size);
/* maybe create an array for 16/8 functions */
op_pixels_func put_pixels_tab[2][4];
op_pixels_func avg_pixels_tab[2][4];
op_pixels_func put_no_rnd_pixels_tab[2][4];
op_pixels_func avg_no_rnd_pixels_tab[2][4];
qpel_mc_func put_qpel_pixels_tab[2][16];
qpel_mc_func avg_qpel_pixels_tab[2][16];
qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
op_pixels_abs_func pix_abs16x16;
op_pixels_abs_func pix_abs16x16_x2;
op_pixels_abs_func pix_abs16x16_y2;
op_pixels_abs_func pix_abs16x16_xy2;
op_pixels_abs_func pix_abs8x8;
op_pixels_abs_func pix_abs8x8_x2;
op_pixels_abs_func pix_abs8x8_y2;
op_pixels_abs_func pix_abs8x8_xy2;
/* huffyuv specific */
//FIXME note: alignment isnt guranteed currently but could be if needed
void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 16*/,int w);
} DSPContext;
void dsputil_init(DSPContext* p, unsigned mask);
/**
* permute block according to permuatation.
* @param last last non zero element in scantable order
*/
void ff_block_permute(INT16 *block, UINT8 *permutation, const UINT8 *scantable, int last);
#define emms_c()
#if defined(HAVE_MMX)
#undef emms_c
#define MM_MMX 0x0001 /* standard MMX */
#define MM_3DNOW 0x0004 /* AMD 3DNOW */
#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
#define MM_SSE 0x0008 /* SSE functions */
#define MM_SSE2 0x0010 /* PIV SSE2 functions */
extern int mm_flags;
int mm_support(void);
void add_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size);
void put_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size);
static inline void emms(void)
{
__asm __volatile ("emms;":::"memory");
}
#define emms_c() \
{\
if (mm_flags & MM_MMX)\
emms();\
}
#define __align8 __attribute__ ((aligned (8)))
void dsputil_init_mmx(DSPContext* c, unsigned mask);
void dsputil_set_bit_exact_mmx(DSPContext* c, unsigned mask);
#elif defined(ARCH_ARMV4L)
/* This is to use 4 bytes read to the IDCT pointers for some 'zero'
line ptimizations */
#define __align8 __attribute__ ((aligned (4)))
void dsputil_init_armv4l(DSPContext* c, unsigned mask);
#elif defined(HAVE_MLIB)
/* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
#define __align8 __attribute__ ((aligned (8)))
void dsputil_init_mlib(DSPContext* c, unsigned mask);
#elif defined(ARCH_ALPHA)
#define __align8 __attribute__ ((aligned (8)))
void dsputil_init_alpha(DSPContext* c, unsigned mask);
#elif defined(ARCH_POWERPC)
#define MM_ALTIVEC 0x0001 /* standard AltiVec */
extern int mm_flags;
#define __align8 __attribute__ ((aligned (16)))
void dsputil_init_ppc(DSPContext* c, unsigned mask);
#elif defined(HAVE_MMI)
#define __align8 __attribute__ ((aligned (16)))
void dsputil_init_mmi(DSPContext* c, unsigned mask);
#else
#define __align8
#endif
#ifdef __GNUC__
struct unaligned_64 { uint64_t l; } __attribute__((packed));
struct unaligned_32 { uint32_t l; } __attribute__((packed));
#define LD32(a) (((const struct unaligned_32 *) (a))->l)
#define LD64(a) (((const struct unaligned_64 *) (a))->l)
#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
#else /* __GNUC__ */
#define LD32(a) (*((uint32_t*)(a)))
#define LD64(a) (*((uint64_t*)(a)))
#define ST32(a, b) *((uint32_t*)(a)) = (b)
#endif /* !__GNUC__ */
/* PSNR */
void get_psnr(UINT8 *orig_image[3], UINT8 *coded_image[3],
int orig_linesize[3], int coded_linesize,
AVCodecContext *avctx);
/* FFT computation */
/* NOTE: soon integer code will be added, so you must use the
FFTSample type */
typedef float FFTSample;
typedef struct FFTComplex {
FFTSample re, im;
} FFTComplex;
typedef struct FFTContext {
int nbits;
int inverse;
uint16_t *revtab;
FFTComplex *exptab;
FFTComplex *exptab1; /* only used by SSE code */
void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
} FFTContext;
int fft_init(FFTContext *s, int nbits, int inverse);
void fft_permute(FFTContext *s, FFTComplex *z);
void fft_calc_c(FFTContext *s, FFTComplex *z);
void fft_calc_sse(FFTContext *s, FFTComplex *z);
static inline void fft_calc(FFTContext *s, FFTComplex *z)
{
s->fft_calc(s, z);
}
void fft_end(FFTContext *s);
/* MDCT computation */
typedef struct MDCTContext {
int n; /* size of MDCT (i.e. number of input data * 2) */
int nbits; /* n = 2^nbits */
/* pre/post rotation tables */
FFTSample *tcos;
FFTSample *tsin;
FFTContext fft;
} MDCTContext;
int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
void ff_imdct_calc(MDCTContext *s, FFTSample *output,
const FFTSample *input, FFTSample *tmp);
void ff_mdct_calc(MDCTContext *s, FFTSample *out,
const FFTSample *input, FFTSample *tmp);
void ff_mdct_end(MDCTContext *s);
#ifndef HAVE_LRINTF
/* XXX: add ISOC specific test to avoid specific BSD testing. */
/* better than nothing implementation. */
/* btw, rintf() is existing on fbsd too -- alex */
static inline long int lrintf(float x)
{
return (int)(rint(x));
}
#endif
#endif
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