Statistics
| Branch: | Revision:

ffmpeg / libavcodec / dsputil.h @ 8dbcc9f2

History | View | Annotate | Download (17 KB)

1
/*
2
 * DSP utils
3
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4
 *
5
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
7
 * License as published by the Free Software Foundation; either
8
 * version 2 of the License, or (at your option) any later version.
9
 *
10
 * This library is distributed in the hope that it will be useful,
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
14
 *
15
 * You should have received a copy of the GNU Lesser General Public
16
 * License along with this library; if not, write to the Free Software
17
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 */
19

    
20
/**
21
 * @file dsputil.h
22
 * DSP utils.
23
 * note, many functions in here may use MMX which trashes the FPU state, it is
24
 * absolutely necessary to call emms_c() between dsp & float/double code
25
 */
26

    
27
#ifndef DSPUTIL_H
28
#define DSPUTIL_H
29

    
30
#include "common.h"
31
#include "avcodec.h"
32

    
33

    
34
//#define DEBUG
35
/* dct code */
36
typedef short DCTELEM;
37

    
38
void fdct_ifast (DCTELEM *data);
39
void fdct_ifast248 (DCTELEM *data);
40
void ff_jpeg_fdct_islow (DCTELEM *data);
41
void ff_fdct248_islow (DCTELEM *data);
42

    
43
void j_rev_dct (DCTELEM *data);
44

    
45
void ff_fdct_mmx(DCTELEM *block);
46
void ff_fdct_mmx2(DCTELEM *block);
47

    
48
/* encoding scans */
49
extern const uint8_t ff_alternate_horizontal_scan[64];
50
extern const uint8_t ff_alternate_vertical_scan[64];
51
extern const uint8_t ff_zigzag_direct[64];
52
extern const uint8_t ff_zigzag248_direct[64];
53

    
54
/* pixel operations */
55
#define MAX_NEG_CROP 384
56

    
57
/* temporary */
58
extern uint32_t squareTbl[512];
59
extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
60

    
61

    
62
/* minimum alignment rules ;)
63
if u notice errors in the align stuff, need more alignment for some asm code for some cpu
64
or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
65

66
!warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
67
i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
68

69
!future video codecs might need functions with less strict alignment
70
*/
71

    
72
/*
73
void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);
74
void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);
75
void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
76
void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
77
void clear_blocks_c(DCTELEM *blocks);
78
*/
79

    
80
/* add and put pixel (decoding) */
81
// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
82
typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
83
typedef void (*tpel_mc_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int w, int h);
84
typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
85
typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
86

    
87
#define DEF_OLD_QPEL(name)\
88
void ff_put_        ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
89
void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
90
void ff_avg_        ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
91

    
92
DEF_OLD_QPEL(qpel16_mc11_old_c)
93
DEF_OLD_QPEL(qpel16_mc31_old_c)
94
DEF_OLD_QPEL(qpel16_mc12_old_c)
95
DEF_OLD_QPEL(qpel16_mc32_old_c)
96
DEF_OLD_QPEL(qpel16_mc13_old_c)
97
DEF_OLD_QPEL(qpel16_mc33_old_c)
98
DEF_OLD_QPEL(qpel8_mc11_old_c)
99
DEF_OLD_QPEL(qpel8_mc31_old_c)
100
DEF_OLD_QPEL(qpel8_mc12_old_c)
101
DEF_OLD_QPEL(qpel8_mc32_old_c)
102
DEF_OLD_QPEL(qpel8_mc13_old_c)
103
DEF_OLD_QPEL(qpel8_mc33_old_c)
104

    
105
#define CALL_2X_PIXELS(a, b, n)\
106
static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
107
    b(block  , pixels  , line_size, h);\
108
    b(block+n, pixels+n, line_size, h);\
109
}
110

    
111
/* motion estimation */
112

    
113
typedef int (*op_pixels_abs_func)(uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
114

    
115
typedef int (*me_cmp_func)(void /*MpegEncContext*/ *s, uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
116

    
117

    
118
/**
119
 * DSPContext.
120
 */
121
typedef struct DSPContext {
122
    /* pixel ops : interface with DCT */
123
    void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
124
    void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);
125
    void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
126
    void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
127
    /**
128
     * translational global motion compensation.
129
     */
130
    void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
131
    /**
132
     * global motion compensation.
133
     */
134
    void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,
135
                    int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
136
    void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
137
    int (*pix_sum)(uint8_t * pix, int line_size);
138
    int (*pix_norm1)(uint8_t * pix, int line_size);
139
    me_cmp_func sad[2]; /* identical to pix_absAxA except additional void * */
140
    me_cmp_func sse[2];
141
    me_cmp_func hadamard8_diff[2];
142
    me_cmp_func dct_sad[2];
143
    me_cmp_func quant_psnr[2];
144
    me_cmp_func bit[2];
145
    me_cmp_func rd[2];
146
    int (*hadamard8_abs )(uint8_t *src, int stride, int mean);
147

    
148
    me_cmp_func me_pre_cmp[11];
149
    me_cmp_func me_cmp[11];
150
    me_cmp_func me_sub_cmp[11];
151
    me_cmp_func mb_cmp[11];
152

    
153
    /* maybe create an array for 16/8/4/2 functions */
154
    /**
155
     * Halfpel motion compensation with rounding (a+b+1)>>1.
156
     * this is an array[4][4] of motion compensation funcions for 4 
157
     * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
158
     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
159
     * @param block destination where the result is stored
160
     * @param pixels source
161
     * @param line_size number of bytes in a horizontal line of block
162
     * @param h height
163
     */
164
    op_pixels_func put_pixels_tab[4][4];
165

    
166
    /**
167
     * Halfpel motion compensation with rounding (a+b+1)>>1.
168
     * This is an array[4][4] of motion compensation functions for 4 
169
     * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
170
     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
171
     * @param block destination into which the result is averaged (a+b+1)>>1
172
     * @param pixels source
173
     * @param line_size number of bytes in a horizontal line of block
174
     * @param h height
175
     */
176
    op_pixels_func avg_pixels_tab[4][4];
177

    
178
    /**
179
     * Halfpel motion compensation with no rounding (a+b)>>1.
180
     * this is an array[2][4] of motion compensation funcions for 2 
181
     * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
182
     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
183
     * @param block destination where the result is stored
184
     * @param pixels source
185
     * @param line_size number of bytes in a horizontal line of block
186
     * @param h height
187
     */
188
    op_pixels_func put_no_rnd_pixels_tab[2][4];
189

    
190
    /**
191
     * Halfpel motion compensation with no rounding (a+b)>>1.
192
     * this is an array[2][4] of motion compensation funcions for 2 
193
     * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
194
     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
195
     * @param block destination into which the result is averaged (a+b)>>1
196
     * @param pixels source
197
     * @param line_size number of bytes in a horizontal line of block
198
     * @param h height
199
     */
200
    op_pixels_func avg_no_rnd_pixels_tab[2][4];
201
    
202
    /**
203
     * Thirdpel motion compensation with rounding (a+b+1)>>1.
204
     * this is an array[12] of motion compensation funcions for the 9 thirdpel positions<br>
205
     * *pixels_tab[ xthirdpel + 4*ythirdpel ]
206
     * @param block destination where the result is stored
207
     * @param pixels source
208
     * @param line_size number of bytes in a horizontal line of block
209
     * @param h height
210
     */
211
    tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
212
    tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
213

    
214
    qpel_mc_func put_qpel_pixels_tab[2][16];
215
    qpel_mc_func avg_qpel_pixels_tab[2][16];
216
    qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
217
    qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
218
    qpel_mc_func put_mspel_pixels_tab[8];
219
    
220
    /**
221
     * h264 Chram MC
222
     */
223
    h264_chroma_mc_func put_h264_chroma_pixels_tab[3];
224
    h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];
225

    
226
    qpel_mc_func put_h264_qpel_pixels_tab[3][16];
227
    qpel_mc_func avg_h264_qpel_pixels_tab[3][16];
228
    
229
    op_pixels_abs_func pix_abs16x16;
230
    op_pixels_abs_func pix_abs16x16_x2;
231
    op_pixels_abs_func pix_abs16x16_y2;
232
    op_pixels_abs_func pix_abs16x16_xy2;
233
    op_pixels_abs_func pix_abs8x8;
234
    op_pixels_abs_func pix_abs8x8_x2;
235
    op_pixels_abs_func pix_abs8x8_y2;
236
    op_pixels_abs_func pix_abs8x8_xy2;
237
    
238
    /* huffyuv specific */
239
    void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
240
    void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
241
    /**
242
     * subtract huffyuv's variant of median prediction
243
     * note, this might read from src1[-1], src2[-1]
244
     */
245
    void (*sub_hfyu_median_prediction)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top);
246
    void (*bswap_buf)(uint32_t *dst, uint32_t *src, int w);
247
    
248
    /* (I)DCT */
249
    void (*fdct)(DCTELEM *block/* align 16*/);
250
    void (*fdct248)(DCTELEM *block/* align 16*/);
251
    
252
    /* IDCT really*/
253
    void (*idct)(DCTELEM *block/* align 16*/);
254
    
255
    /**
256
     * block -> idct -> clip to unsigned 8 bit -> dest.
257
     * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
258
     * @param line_size size in bytes of a horizotal line of dest
259
     */
260
    void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
261
    
262
    /**
263
     * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
264
     * @param line_size size in bytes of a horizotal line of dest
265
     */
266
    void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
267
    
268
    /**
269
     * idct input permutation.
270
     * several optimized IDCTs need a permutated input (relative to the normal order of the reference
271
     * IDCT)
272
     * this permutation must be performed before the idct_put/add, note, normally this can be merged
273
     * with the zigzag/alternate scan<br>
274
     * an example to avoid confusion:
275
     * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
276
     * - (x -> referece dct -> reference idct -> x)
277
     * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
278
     * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
279
     */
280
    uint8_t idct_permutation[64];
281
    int idct_permutation_type;
282
#define FF_NO_IDCT_PERM 1
283
#define FF_LIBMPEG2_IDCT_PERM 2
284
#define FF_SIMPLE_IDCT_PERM 3
285
#define FF_TRANSPOSE_IDCT_PERM 4
286

    
287
} DSPContext;
288

    
289
void dsputil_static_init(void);
290
void dsputil_init(DSPContext* p, AVCodecContext *avctx);
291

    
292
/**
293
 * permute block according to permuatation.
294
 * @param last last non zero element in scantable order
295
 */
296
void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
297

    
298
#define        BYTE_VEC32(c)        ((c)*0x01010101UL)
299

    
300
static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
301
{
302
    return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
303
}
304

    
305
static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
306
{
307
    return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
308
}
309

    
310
/**
311
 * Empty mmx state.
312
 * this must be called between any dsp function and float/double code.
313
 * for example sin(); dsp->idct_put(); emms_c(); cos()
314
 */
315
#define emms_c()
316

    
317
/* should be defined by architectures supporting
318
   one or more MultiMedia extension */
319
int mm_support(void);
320

    
321
#if defined(HAVE_MMX)
322

    
323
#undef emms_c
324

    
325
#define MM_MMX    0x0001 /* standard MMX */
326
#define MM_3DNOW  0x0004 /* AMD 3DNOW */
327
#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
328
#define MM_SSE    0x0008 /* SSE functions */
329
#define MM_SSE2   0x0010 /* PIV SSE2 functions */
330

    
331
extern int mm_flags;
332

    
333
void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
334
void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
335

    
336
static inline void emms(void)
337
{
338
    __asm __volatile ("emms;":::"memory");
339
}
340

    
341

    
342
#define emms_c() \
343
{\
344
    if (mm_flags & MM_MMX)\
345
        emms();\
346
}
347

    
348
#define __align8 __attribute__ ((aligned (8)))
349

    
350
void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
351
void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
352

    
353
#elif defined(ARCH_ARMV4L)
354

    
355
/* This is to use 4 bytes read to the IDCT pointers for some 'zero'
356
   line ptimizations */
357
#define __align8 __attribute__ ((aligned (4)))
358

    
359
void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
360

    
361
#elif defined(HAVE_MLIB)
362

    
363
/* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
364
#define __align8 __attribute__ ((aligned (8)))
365

    
366
void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
367

    
368
#elif defined(ARCH_ALPHA)
369

    
370
#define __align8 __attribute__ ((aligned (8)))
371

    
372
void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
373

    
374
#elif defined(ARCH_POWERPC)
375

    
376
#define MM_ALTIVEC    0x0001 /* standard AltiVec */
377

    
378
extern int mm_flags;
379

    
380
#if defined(HAVE_ALTIVEC) && !defined(CONFIG_DARWIN)
381
#include <altivec.h>
382
#endif
383

    
384
#define __align8 __attribute__ ((aligned (16)))
385

    
386
void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
387

    
388
#elif defined(HAVE_MMI)
389

    
390
#define __align8 __attribute__ ((aligned (16)))
391

    
392
void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
393

    
394
#elif defined(ARCH_SH4)
395

    
396
#define __align8 __attribute__ ((aligned (8)))
397

    
398
void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
399

    
400
#else
401

    
402
#define __align8
403

    
404
#endif
405

    
406
#ifdef __GNUC__
407

    
408
struct unaligned_64 { uint64_t l; } __attribute__((packed));
409
struct unaligned_32 { uint32_t l; } __attribute__((packed));
410
struct unaligned_16 { uint16_t l; } __attribute__((packed));
411

    
412
#define LD16(a) (((const struct unaligned_16 *) (a))->l)
413
#define LD32(a) (((const struct unaligned_32 *) (a))->l)
414
#define LD64(a) (((const struct unaligned_64 *) (a))->l)
415

    
416
#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
417

    
418
#else /* __GNUC__ */
419

    
420
#define LD16(a) (*((uint16_t*)(a)))
421
#define LD32(a) (*((uint32_t*)(a)))
422
#define LD64(a) (*((uint64_t*)(a)))
423

    
424
#define ST32(a, b) *((uint32_t*)(a)) = (b)
425

    
426
#endif /* !__GNUC__ */
427

    
428
/* PSNR */
429
void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
430
              int orig_linesize[3], int coded_linesize,
431
              AVCodecContext *avctx);
432

    
433
/* FFT computation */
434

    
435
/* NOTE: soon integer code will be added, so you must use the
436
   FFTSample type */
437
typedef float FFTSample;
438

    
439
typedef struct FFTComplex {
440
    FFTSample re, im;
441
} FFTComplex;
442

    
443
typedef struct FFTContext {
444
    int nbits;
445
    int inverse;
446
    uint16_t *revtab;
447
    FFTComplex *exptab;
448
    FFTComplex *exptab1; /* only used by SSE code */
449
    void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
450
} FFTContext;
451

    
452
int fft_init(FFTContext *s, int nbits, int inverse);
453
void fft_permute(FFTContext *s, FFTComplex *z);
454
void fft_calc_c(FFTContext *s, FFTComplex *z);
455
void fft_calc_sse(FFTContext *s, FFTComplex *z);
456
void fft_calc_altivec(FFTContext *s, FFTComplex *z);
457

    
458
static inline void fft_calc(FFTContext *s, FFTComplex *z)
459
{
460
    s->fft_calc(s, z);
461
}
462
void fft_end(FFTContext *s);
463

    
464
/* MDCT computation */
465

    
466
typedef struct MDCTContext {
467
    int n;  /* size of MDCT (i.e. number of input data * 2) */
468
    int nbits; /* n = 2^nbits */
469
    /* pre/post rotation tables */
470
    FFTSample *tcos;
471
    FFTSample *tsin;
472
    FFTContext fft;
473
} MDCTContext;
474

    
475
int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
476
void ff_imdct_calc(MDCTContext *s, FFTSample *output,
477
                const FFTSample *input, FFTSample *tmp);
478
void ff_mdct_calc(MDCTContext *s, FFTSample *out,
479
               const FFTSample *input, FFTSample *tmp);
480
void ff_mdct_end(MDCTContext *s);
481

    
482
#define WARPER88_1616(name8, name16)\
483
static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride){\
484
    return name8(s, dst           , src           , stride)\
485
          +name8(s, dst+8         , src+8         , stride)\
486
          +name8(s, dst  +8*stride, src  +8*stride, stride)\
487
          +name8(s, dst+8+8*stride, src+8+8*stride, stride);\
488
}
489

    
490
#ifndef HAVE_LRINTF
491
/* XXX: add ISOC specific test to avoid specific BSD testing. */
492
/* better than nothing implementation. */
493
/* btw, rintf() is existing on fbsd too -- alex */
494
static inline long int lrintf(float x)
495
{
496
#ifdef CONFIG_WIN32
497
    /* XXX: incorrect, but make it compile */
498
    return (int)(x);
499
#else
500
    return (int)(rint(x));
501
#endif
502
}
503
#endif
504

    
505
#endif