fixed static init
[libav.git] / libavcodec / dsputil.h
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 */
24
25 #ifndef DSPUTIL_H
26 #define DSPUTIL_H
27
28 #include "common.h"
29 #include "avcodec.h"
30
31
32 //#define DEBUG
33 /* dct code */
34 typedef short DCTELEM;
35 //typedef int DCTELEM;
36
37 void fdct_ifast (DCTELEM *data);
38 void ff_jpeg_fdct_islow (DCTELEM *data);
39
40 void j_rev_dct (DCTELEM *data);
41
42 void ff_fdct_mmx(DCTELEM *block);
43
44 /* encoding scans */
45 extern const uint8_t ff_alternate_horizontal_scan[64];
46 extern const uint8_t ff_alternate_vertical_scan[64];
47 extern const uint8_t ff_zigzag_direct[64];
48
49 /* pixel operations */
50 #define MAX_NEG_CROP 384
51
52 /* temporary */
53 extern uint32_t squareTbl[512];
54 extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
55
56
57 /* minimum alignment rules ;)
58 if u notice errors in the align stuff, need more alignment for some asm code for some cpu
59 or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
60
61 !warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
62 i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
63
64 !future video codecs might need functions with less strict alignment
65 */
66
67 /*
68 void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);
69 void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);
70 void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
71 void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
72 void clear_blocks_c(DCTELEM *blocks);
73 */
74
75 /* add and put pixel (decoding) */
76 // blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
77 typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
78 typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
79 typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
80
81 #define DEF_OLD_QPEL(name)\
82 void ff_put_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
83 void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
84 void ff_avg_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
85
86 DEF_OLD_QPEL(qpel16_mc11_old_c)
87 DEF_OLD_QPEL(qpel16_mc31_old_c)
88 DEF_OLD_QPEL(qpel16_mc12_old_c)
89 DEF_OLD_QPEL(qpel16_mc32_old_c)
90 DEF_OLD_QPEL(qpel16_mc13_old_c)
91 DEF_OLD_QPEL(qpel16_mc33_old_c)
92 DEF_OLD_QPEL(qpel8_mc11_old_c)
93 DEF_OLD_QPEL(qpel8_mc31_old_c)
94 DEF_OLD_QPEL(qpel8_mc12_old_c)
95 DEF_OLD_QPEL(qpel8_mc32_old_c)
96 DEF_OLD_QPEL(qpel8_mc13_old_c)
97 DEF_OLD_QPEL(qpel8_mc33_old_c)
98
99 #define CALL_2X_PIXELS(a, b, n)\
100 static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
101 b(block , pixels , line_size, h);\
102 b(block+n, pixels+n, line_size, h);\
103 }
104
105 /* motion estimation */
106
107 typedef int (*op_pixels_abs_func)(uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
108
109 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))*/;
110
111
112 /**
113 * DSPContext.
114 */
115 typedef struct DSPContext {
116 /* pixel ops : interface with DCT */
117 void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
118 void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);
119 void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
120 void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
121 /**
122 * translational global motion compensation.
123 */
124 void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
125 /**
126 * global motion compensation.
127 */
128 void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,
129 int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
130 void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
131 int (*pix_sum)(uint8_t * pix, int line_size);
132 int (*pix_norm1)(uint8_t * pix, int line_size);
133 me_cmp_func sad[2]; /* identical to pix_absAxA except additional void * */
134 me_cmp_func sse[2];
135 me_cmp_func hadamard8_diff[2];
136 me_cmp_func dct_sad[2];
137 me_cmp_func quant_psnr[2];
138 me_cmp_func bit[2];
139 me_cmp_func rd[2];
140 int (*hadamard8_abs )(uint8_t *src, int stride, int mean);
141
142 me_cmp_func me_pre_cmp[11];
143 me_cmp_func me_cmp[11];
144 me_cmp_func me_sub_cmp[11];
145 me_cmp_func mb_cmp[11];
146
147 /* maybe create an array for 16/8 functions */
148 /**
149 * Halfpel motion compensation with rounding (a+b+1)>>1.
150 * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ]
151 * @param block destination where the result is stored
152 * @param pixels source
153 * @param line_size number of bytes in a horizontal line of block
154 * @param h height
155 */
156 op_pixels_func put_pixels_tab[2][4];
157
158 /**
159 * Halfpel motion compensation with rounding (a+b+1)>>1.
160 * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ]
161 * @param block destination into which the result is averaged (a+b+1)>>1
162 * @param pixels source
163 * @param line_size number of bytes in a horizontal line of block
164 * @param h height
165 */
166 op_pixels_func avg_pixels_tab[2][4];
167
168 /**
169 * Halfpel motion compensation with no rounding (a+b)>>1.
170 * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ]
171 * @param block destination where the result is stored
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 put_no_rnd_pixels_tab[2][4];
177
178 /**
179 * Halfpel motion compensation with no rounding (a+b)>>1.
180 * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ]
181 * @param block destination into which the result is averaged (a+b)>>1
182 * @param pixels source
183 * @param line_size number of bytes in a horizontal line of block
184 * @param h height
185 */
186 op_pixels_func avg_no_rnd_pixels_tab[2][4];
187 qpel_mc_func put_qpel_pixels_tab[2][16];
188 qpel_mc_func avg_qpel_pixels_tab[2][16];
189 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
190 qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
191 qpel_mc_func put_mspel_pixels_tab[8];
192
193 /**
194 * h264 Chram MC
195 */
196 h264_chroma_mc_func put_h264_chroma_pixels_tab[3];
197 h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];
198
199 qpel_mc_func put_h264_qpel_pixels_tab[3][16];
200 qpel_mc_func avg_h264_qpel_pixels_tab[3][16];
201
202 op_pixels_abs_func pix_abs16x16;
203 op_pixels_abs_func pix_abs16x16_x2;
204 op_pixels_abs_func pix_abs16x16_y2;
205 op_pixels_abs_func pix_abs16x16_xy2;
206 op_pixels_abs_func pix_abs8x8;
207 op_pixels_abs_func pix_abs8x8_x2;
208 op_pixels_abs_func pix_abs8x8_y2;
209 op_pixels_abs_func pix_abs8x8_xy2;
210
211 /* huffyuv specific */
212 void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
213 void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
214
215 /* (I)DCT */
216 void (*fdct)(DCTELEM *block/* align 16*/);
217
218 /**
219 * block -> idct -> clip to unsigned 8 bit -> dest.
220 * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
221 * @param line_size size in bytes of a horizotal line of dest
222 */
223 void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
224
225 /**
226 * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
227 * @param line_size size in bytes of a horizotal line of dest
228 */
229 void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
230
231 /**
232 * idct input permutation.
233 * an example to avoid confusion:
234 * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
235 * - (x -> referece dct -> reference idct -> x)
236 * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
237 * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
238 */
239 uint8_t idct_permutation[64];
240 int idct_permutation_type;
241 #define FF_NO_IDCT_PERM 1
242 #define FF_LIBMPEG2_IDCT_PERM 2
243 #define FF_SIMPLE_IDCT_PERM 3
244 #define FF_TRANSPOSE_IDCT_PERM 4
245
246 } DSPContext;
247
248 void dsputil_static_init(void);
249 void dsputil_init(DSPContext* p, AVCodecContext *avctx);
250
251 /**
252 * permute block according to permuatation.
253 * @param last last non zero element in scantable order
254 */
255 void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
256
257 /**
258 * Empty mmx state.
259 * this must be called between any dsp function and float/double code.
260 * for example sin(); dsp->idct_put(); emms_c(); cos()
261 */
262 #define emms_c()
263
264 /* should be defined by architectures supporting
265 one or more MultiMedia extension */
266 int mm_support(void);
267
268 #if defined(HAVE_MMX)
269
270 #undef emms_c
271
272 #define MM_MMX 0x0001 /* standard MMX */
273 #define MM_3DNOW 0x0004 /* AMD 3DNOW */
274 #define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
275 #define MM_SSE 0x0008 /* SSE functions */
276 #define MM_SSE2 0x0010 /* PIV SSE2 functions */
277
278 extern int mm_flags;
279
280 void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
281 void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
282
283 static inline void emms(void)
284 {
285 __asm __volatile ("emms;":::"memory");
286 }
287
288
289 #define emms_c() \
290 {\
291 if (mm_flags & MM_MMX)\
292 emms();\
293 }
294
295 #define __align8 __attribute__ ((aligned (8)))
296
297 void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
298 void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
299
300 #elif defined(ARCH_ARMV4L)
301
302 /* This is to use 4 bytes read to the IDCT pointers for some 'zero'
303 line ptimizations */
304 #define __align8 __attribute__ ((aligned (4)))
305
306 void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
307
308 #elif defined(HAVE_MLIB)
309
310 /* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
311 #define __align8 __attribute__ ((aligned (8)))
312
313 void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
314
315 #elif defined(ARCH_ALPHA)
316
317 #define __align8 __attribute__ ((aligned (8)))
318
319 void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
320
321 #elif defined(ARCH_POWERPC)
322
323 #define MM_ALTIVEC 0x0001 /* standard AltiVec */
324
325 extern int mm_flags;
326
327 #if defined(HAVE_ALTIVEC) && !defined(CONFIG_DARWIN)
328 #include <altivec.h>
329 #endif
330
331 #define __align8 __attribute__ ((aligned (16)))
332
333 void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
334
335 #elif defined(HAVE_MMI)
336
337 #define __align8 __attribute__ ((aligned (16)))
338
339 void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
340
341 #else
342
343 #define __align8
344
345 #endif
346
347 #ifdef __GNUC__
348
349 struct unaligned_64 { uint64_t l; } __attribute__((packed));
350 struct unaligned_32 { uint32_t l; } __attribute__((packed));
351
352 #define LD32(a) (((const struct unaligned_32 *) (a))->l)
353 #define LD64(a) (((const struct unaligned_64 *) (a))->l)
354
355 #define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
356
357 #else /* __GNUC__ */
358
359 #define LD32(a) (*((uint32_t*)(a)))
360 #define LD64(a) (*((uint64_t*)(a)))
361
362 #define ST32(a, b) *((uint32_t*)(a)) = (b)
363
364 #endif /* !__GNUC__ */
365
366 /* PSNR */
367 void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
368 int orig_linesize[3], int coded_linesize,
369 AVCodecContext *avctx);
370
371 /* FFT computation */
372
373 /* NOTE: soon integer code will be added, so you must use the
374 FFTSample type */
375 typedef float FFTSample;
376
377 typedef struct FFTComplex {
378 FFTSample re, im;
379 } FFTComplex;
380
381 typedef struct FFTContext {
382 int nbits;
383 int inverse;
384 uint16_t *revtab;
385 FFTComplex *exptab;
386 FFTComplex *exptab1; /* only used by SSE code */
387 void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
388 } FFTContext;
389
390 int fft_init(FFTContext *s, int nbits, int inverse);
391 void fft_permute(FFTContext *s, FFTComplex *z);
392 void fft_calc_c(FFTContext *s, FFTComplex *z);
393 void fft_calc_sse(FFTContext *s, FFTComplex *z);
394 void fft_calc_altivec(FFTContext *s, FFTComplex *z);
395
396 static inline void fft_calc(FFTContext *s, FFTComplex *z)
397 {
398 s->fft_calc(s, z);
399 }
400 void fft_end(FFTContext *s);
401
402 /* MDCT computation */
403
404 typedef struct MDCTContext {
405 int n; /* size of MDCT (i.e. number of input data * 2) */
406 int nbits; /* n = 2^nbits */
407 /* pre/post rotation tables */
408 FFTSample *tcos;
409 FFTSample *tsin;
410 FFTContext fft;
411 } MDCTContext;
412
413 int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
414 void ff_imdct_calc(MDCTContext *s, FFTSample *output,
415 const FFTSample *input, FFTSample *tmp);
416 void ff_mdct_calc(MDCTContext *s, FFTSample *out,
417 const FFTSample *input, FFTSample *tmp);
418 void ff_mdct_end(MDCTContext *s);
419
420 #define WARPER88_1616(name8, name16)\
421 static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride){\
422 return name8(s, dst , src , stride)\
423 +name8(s, dst+8 , src+8 , stride)\
424 +name8(s, dst +8*stride, src +8*stride, stride)\
425 +name8(s, dst+8+8*stride, src+8+8*stride, stride);\
426 }
427
428 #ifndef HAVE_LRINTF
429 /* XXX: add ISOC specific test to avoid specific BSD testing. */
430 /* better than nothing implementation. */
431 /* btw, rintf() is existing on fbsd too -- alex */
432 static inline long int lrintf(float x)
433 {
434 #ifdef CONFIG_WIN32
435 /* XXX: incorrect, but make it compile */
436 return (int)(x);
437 #else
438 return (int)(rint(x));
439 #endif
440 }
441 #endif
442
443 #endif