MMX for H.264 deblocking filter
[libav.git] / libavcodec / dsputil.h
1 /*
2 * DSP utils
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 /**
22 * @file dsputil.h
23 * DSP utils.
24 * note, many functions in here may use MMX which trashes the FPU state, it is
25 * absolutely necessary to call emms_c() between dsp & float/double code
26 */
27
28 #ifndef DSPUTIL_H
29 #define DSPUTIL_H
30
31 #include "common.h"
32 #include "avcodec.h"
33
34
35 //#define DEBUG
36 /* dct code */
37 typedef short DCTELEM;
38
39 void fdct_ifast (DCTELEM *data);
40 void fdct_ifast248 (DCTELEM *data);
41 void ff_jpeg_fdct_islow (DCTELEM *data);
42 void ff_fdct248_islow (DCTELEM *data);
43
44 void j_rev_dct (DCTELEM *data);
45 void j_rev_dct4 (DCTELEM *data);
46 void j_rev_dct2 (DCTELEM *data);
47 void j_rev_dct1 (DCTELEM *data);
48
49 void ff_fdct_mmx(DCTELEM *block);
50 void ff_fdct_mmx2(DCTELEM *block);
51 void ff_fdct_sse2(DCTELEM *block);
52
53 void ff_h264_idct_add_c(uint8_t *dst, DCTELEM *block, int stride);
54 void ff_h264_lowres_idct_add_c(uint8_t *dst, int stride, DCTELEM *block);
55 void ff_h264_lowres_idct_put_c(uint8_t *dst, int stride, DCTELEM *block);
56
57 /* encoding scans */
58 extern const uint8_t ff_alternate_horizontal_scan[64];
59 extern const uint8_t ff_alternate_vertical_scan[64];
60 extern const uint8_t ff_zigzag_direct[64];
61 extern const uint8_t ff_zigzag248_direct[64];
62
63 /* pixel operations */
64 #define MAX_NEG_CROP 1024
65
66 /* temporary */
67 extern uint32_t squareTbl[512];
68 extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
69
70 /* VP3 DSP functions */
71 void vp3_dsp_init_c(void);
72 void vp3_idct_c(int16_t *input_data, int16_t *dequant_matrix,
73 int coeff_count, DCTELEM *output_data);
74
75 void vp3_dsp_init_mmx(void);
76 void vp3_idct_mmx(int16_t *input_data, int16_t *dequant_matrix,
77 int coeff_count, DCTELEM *output_data);
78
79 void vp3_dsp_init_sse2(void);
80 void vp3_idct_sse2(int16_t *input_data, int16_t *dequant_matrix,
81 int coeff_count, DCTELEM *output_data);
82
83 /* minimum alignment rules ;)
84 if u notice errors in the align stuff, need more alignment for some asm code for some cpu
85 or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
86
87 !warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
88 i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
89
90 !future video codecs might need functions with less strict alignment
91 */
92
93 /*
94 void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);
95 void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);
96 void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
97 void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
98 void clear_blocks_c(DCTELEM *blocks);
99 */
100
101 /* add and put pixel (decoding) */
102 // blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
103 //h for op_pixels_func is limited to {width/2, width} but never larger than 16 and never smaller then 4
104 typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
105 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);
106 typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
107 typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
108 typedef void (*h264_weight_func)(uint8_t *block, int stride, int log2_denom, int weight, int offset);
109 typedef void (*h264_biweight_func)(uint8_t *dst, uint8_t *src, int stride, int log2_denom, int weightd, int weights, int offsetd, int offsets);
110
111 #define DEF_OLD_QPEL(name)\
112 void ff_put_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
113 void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
114 void ff_avg_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
115
116 DEF_OLD_QPEL(qpel16_mc11_old_c)
117 DEF_OLD_QPEL(qpel16_mc31_old_c)
118 DEF_OLD_QPEL(qpel16_mc12_old_c)
119 DEF_OLD_QPEL(qpel16_mc32_old_c)
120 DEF_OLD_QPEL(qpel16_mc13_old_c)
121 DEF_OLD_QPEL(qpel16_mc33_old_c)
122 DEF_OLD_QPEL(qpel8_mc11_old_c)
123 DEF_OLD_QPEL(qpel8_mc31_old_c)
124 DEF_OLD_QPEL(qpel8_mc12_old_c)
125 DEF_OLD_QPEL(qpel8_mc32_old_c)
126 DEF_OLD_QPEL(qpel8_mc13_old_c)
127 DEF_OLD_QPEL(qpel8_mc33_old_c)
128
129 #define CALL_2X_PIXELS(a, b, n)\
130 static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
131 b(block , pixels , line_size, h);\
132 b(block+n, pixels+n, line_size, h);\
133 }
134
135 /* motion estimation */
136 // h is limited to {width/2, width, 2*width} but never larger than 16 and never smaller then 2
137 // allthough currently h<4 is not used as functions with width <8 are not used and neither implemented
138 typedef int (*me_cmp_func)(void /*MpegEncContext*/ *s, uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size, int h)/* __attribute__ ((const))*/;
139
140
141 /**
142 * DSPContext.
143 */
144 typedef struct DSPContext {
145 /* pixel ops : interface with DCT */
146 void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
147 void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);
148 void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
149 void (*put_signed_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
150 void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
151 /**
152 * translational global motion compensation.
153 */
154 void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
155 /**
156 * global motion compensation.
157 */
158 void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,
159 int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
160 void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
161 int (*pix_sum)(uint8_t * pix, int line_size);
162 int (*pix_norm1)(uint8_t * pix, int line_size);
163 // 16x16 8x8 4x4 2x2 16x8 8x4 4x2 8x16 4x8 2x4
164
165 me_cmp_func sad[5]; /* identical to pix_absAxA except additional void * */
166 me_cmp_func sse[5];
167 me_cmp_func hadamard8_diff[5];
168 me_cmp_func dct_sad[5];
169 me_cmp_func quant_psnr[5];
170 me_cmp_func bit[5];
171 me_cmp_func rd[5];
172 me_cmp_func vsad[5];
173 me_cmp_func vsse[5];
174 me_cmp_func nsse[5];
175 me_cmp_func w53[5];
176 me_cmp_func w97[5];
177 me_cmp_func dct_max[5];
178
179 me_cmp_func me_pre_cmp[5];
180 me_cmp_func me_cmp[5];
181 me_cmp_func me_sub_cmp[5];
182 me_cmp_func mb_cmp[5];
183 me_cmp_func ildct_cmp[5]; //only width 16 used
184 me_cmp_func frame_skip_cmp[5]; //only width 8 used
185
186 /**
187 * Halfpel motion compensation with rounding (a+b+1)>>1.
188 * this is an array[4][4] of motion compensation funcions for 4
189 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
190 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
191 * @param block destination where the result is stored
192 * @param pixels source
193 * @param line_size number of bytes in a horizontal line of block
194 * @param h height
195 */
196 op_pixels_func put_pixels_tab[4][4];
197
198 /**
199 * Halfpel motion compensation with rounding (a+b+1)>>1.
200 * This is an array[4][4] of motion compensation functions for 4
201 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
202 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
203 * @param block destination into which the result is averaged (a+b+1)>>1
204 * @param pixels source
205 * @param line_size number of bytes in a horizontal line of block
206 * @param h height
207 */
208 op_pixels_func avg_pixels_tab[4][4];
209
210 /**
211 * Halfpel motion compensation with no rounding (a+b)>>1.
212 * this is an array[2][4] of motion compensation funcions for 2
213 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
214 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
215 * @param block destination where the result is stored
216 * @param pixels source
217 * @param line_size number of bytes in a horizontal line of block
218 * @param h height
219 */
220 op_pixels_func put_no_rnd_pixels_tab[4][4];
221
222 /**
223 * Halfpel motion compensation with no rounding (a+b)>>1.
224 * this is an array[2][4] of motion compensation funcions for 2
225 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
226 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
227 * @param block destination into which the result is averaged (a+b)>>1
228 * @param pixels source
229 * @param line_size number of bytes in a horizontal line of block
230 * @param h height
231 */
232 op_pixels_func avg_no_rnd_pixels_tab[4][4];
233
234 void (*put_no_rnd_pixels_l2[2])(uint8_t *block/*align width (8 or 16)*/, const uint8_t *a/*align 1*/, const uint8_t *b/*align 1*/, int line_size, int h);
235
236 /**
237 * Thirdpel motion compensation with rounding (a+b+1)>>1.
238 * this is an array[12] of motion compensation funcions for the 9 thirdpel positions<br>
239 * *pixels_tab[ xthirdpel + 4*ythirdpel ]
240 * @param block destination where the result is stored
241 * @param pixels source
242 * @param line_size number of bytes in a horizontal line of block
243 * @param h height
244 */
245 tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
246 tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
247
248 qpel_mc_func put_qpel_pixels_tab[2][16];
249 qpel_mc_func avg_qpel_pixels_tab[2][16];
250 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
251 qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
252 qpel_mc_func put_mspel_pixels_tab[8];
253
254 /**
255 * h264 Chram MC
256 */
257 h264_chroma_mc_func put_h264_chroma_pixels_tab[3];
258 h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];
259
260 qpel_mc_func put_h264_qpel_pixels_tab[3][16];
261 qpel_mc_func avg_h264_qpel_pixels_tab[3][16];
262
263 h264_weight_func weight_h264_pixels_tab[10];
264 h264_biweight_func biweight_h264_pixels_tab[10];
265
266 me_cmp_func pix_abs[2][4];
267
268 /* huffyuv specific */
269 void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
270 void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
271 /**
272 * subtract huffyuv's variant of median prediction
273 * note, this might read from src1[-1], src2[-1]
274 */
275 void (*sub_hfyu_median_prediction)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top);
276 void (*bswap_buf)(uint32_t *dst, uint32_t *src, int w);
277
278 void (*h264_v_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int *tc0);
279 void (*h264_h_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int *tc0);
280 void (*h264_v_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int *tc0);
281 void (*h264_h_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int *tc0);
282
283 void (*h263_v_loop_filter)(uint8_t *src, int stride, int qscale);
284 void (*h263_h_loop_filter)(uint8_t *src, int stride, int qscale);
285
286 void (*h261_loop_filter)(uint8_t *src, int stride);
287
288 /* (I)DCT */
289 void (*fdct)(DCTELEM *block/* align 16*/);
290 void (*fdct248)(DCTELEM *block/* align 16*/);
291
292 /* IDCT really*/
293 void (*idct)(DCTELEM *block/* align 16*/);
294
295 /**
296 * block -> idct -> clip to unsigned 8 bit -> dest.
297 * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
298 * @param line_size size in bytes of a horizotal line of dest
299 */
300 void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
301
302 /**
303 * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
304 * @param line_size size in bytes of a horizotal line of dest
305 */
306 void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
307
308 /**
309 * idct input permutation.
310 * several optimized IDCTs need a permutated input (relative to the normal order of the reference
311 * IDCT)
312 * this permutation must be performed before the idct_put/add, note, normally this can be merged
313 * with the zigzag/alternate scan<br>
314 * an example to avoid confusion:
315 * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
316 * - (x -> referece dct -> reference idct -> x)
317 * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
318 * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
319 */
320 uint8_t idct_permutation[64];
321 int idct_permutation_type;
322 #define FF_NO_IDCT_PERM 1
323 #define FF_LIBMPEG2_IDCT_PERM 2
324 #define FF_SIMPLE_IDCT_PERM 3
325 #define FF_TRANSPOSE_IDCT_PERM 4
326
327 int (*try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale);
328 void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);
329 #define BASIS_SHIFT 16
330 #define RECON_SHIFT 6
331
332 /**
333 * This function handles any initialization for the VP3 DSP functions.
334 */
335 void (*vp3_dsp_init)(void);
336
337 /**
338 * This function is responsible for taking a block of zigzag'd,
339 * quantized DCT coefficients and reconstructing the original block of
340 * samples.
341 * @param input_data 64 zigzag'd, quantized DCT coefficients
342 * @param dequant_matrix 64 zigzag'd quantizer coefficients
343 * @param coeff_count index of the last coefficient
344 * @param output_samples space for 64 DCTELEMs where the transformed
345 * samples will be stored
346 */
347 void (*vp3_idct)(int16_t *input_data, int16_t *dequant_matrix,
348 int coeff_count, DCTELEM *output_samples);
349
350 void (*h264_idct_add)(uint8_t *dst, DCTELEM *block, int stride);
351 } DSPContext;
352
353 void dsputil_static_init(void);
354 void dsputil_init(DSPContext* p, AVCodecContext *avctx);
355
356 /**
357 * permute block according to permuatation.
358 * @param last last non zero element in scantable order
359 */
360 void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
361
362 void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type);
363
364 #define BYTE_VEC32(c) ((c)*0x01010101UL)
365
366 static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
367 {
368 return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
369 }
370
371 static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
372 {
373 return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
374 }
375
376 static inline int get_penalty_factor(int lambda, int lambda2, int type){
377 switch(type&0xFF){
378 default:
379 case FF_CMP_SAD:
380 return lambda>>FF_LAMBDA_SHIFT;
381 case FF_CMP_DCT:
382 return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
383 case FF_CMP_W53:
384 return (4*lambda)>>(FF_LAMBDA_SHIFT);
385 case FF_CMP_W97:
386 return (2*lambda)>>(FF_LAMBDA_SHIFT);
387 case FF_CMP_SATD:
388 return (2*lambda)>>FF_LAMBDA_SHIFT;
389 case FF_CMP_RD:
390 case FF_CMP_PSNR:
391 case FF_CMP_SSE:
392 case FF_CMP_NSSE:
393 return lambda2>>FF_LAMBDA_SHIFT;
394 case FF_CMP_BIT:
395 return 1;
396 }
397 }
398
399 /**
400 * Empty mmx state.
401 * this must be called between any dsp function and float/double code.
402 * for example sin(); dsp->idct_put(); emms_c(); cos()
403 */
404 #define emms_c()
405
406 /* should be defined by architectures supporting
407 one or more MultiMedia extension */
408 int mm_support(void);
409
410 #define __align16 __attribute__ ((aligned (16)))
411
412 #if defined(HAVE_MMX)
413
414 #undef emms_c
415
416 #define MM_MMX 0x0001 /* standard MMX */
417 #define MM_3DNOW 0x0004 /* AMD 3DNOW */
418 #define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
419 #define MM_SSE 0x0008 /* SSE functions */
420 #define MM_SSE2 0x0010 /* PIV SSE2 functions */
421 #define MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
422
423 extern int mm_flags;
424
425 void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
426 void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
427 void put_signed_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
428
429 static inline void emms(void)
430 {
431 __asm __volatile ("emms;":::"memory");
432 }
433
434
435 #define emms_c() \
436 {\
437 if (mm_flags & MM_MMX)\
438 emms();\
439 }
440
441 #define __align8 __attribute__ ((aligned (8)))
442 #define STRIDE_ALIGN 8
443
444 void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
445 void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
446
447 #elif defined(ARCH_ARMV4L)
448
449 /* This is to use 4 bytes read to the IDCT pointers for some 'zero'
450 line optimizations */
451 #define __align8 __attribute__ ((aligned (4)))
452 #define STRIDE_ALIGN 4
453
454 void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
455
456 #elif defined(HAVE_MLIB)
457
458 /* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
459 #define __align8 __attribute__ ((aligned (8)))
460 #define STRIDE_ALIGN 8
461
462 void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
463
464 #elif defined(ARCH_SPARC)
465
466 /* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
467 #define __align8 __attribute__ ((aligned (8)))
468 #define STRIDE_ALIGN 8
469 void dsputil_init_vis(DSPContext* c, AVCodecContext *avctx);
470
471 #elif defined(ARCH_ALPHA)
472
473 #define __align8 __attribute__ ((aligned (8)))
474 #define STRIDE_ALIGN 8
475
476 void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
477
478 #elif defined(ARCH_POWERPC)
479
480 #define MM_ALTIVEC 0x0001 /* standard AltiVec */
481
482 extern int mm_flags;
483
484 #if defined(HAVE_ALTIVEC) && !defined(CONFIG_DARWIN)
485 #define pixel altivec_pixel
486 #include <altivec.h>
487 #undef pixel
488 #endif
489
490 #define __align8 __attribute__ ((aligned (16)))
491 #define STRIDE_ALIGN 16
492
493 void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
494
495 #elif defined(HAVE_MMI)
496
497 #define __align8 __attribute__ ((aligned (16)))
498 #define STRIDE_ALIGN 16
499
500 void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
501
502 #elif defined(ARCH_SH4)
503
504 #define __align8 __attribute__ ((aligned (8)))
505 #define STRIDE_ALIGN 8
506
507 void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
508
509 #else
510
511 #define __align8 __attribute__ ((aligned (8)))
512 #define STRIDE_ALIGN 8
513
514 #endif
515
516 #ifdef __GNUC__
517
518 struct unaligned_64 { uint64_t l; } __attribute__((packed));
519 struct unaligned_32 { uint32_t l; } __attribute__((packed));
520 struct unaligned_16 { uint16_t l; } __attribute__((packed));
521
522 #define LD16(a) (((const struct unaligned_16 *) (a))->l)
523 #define LD32(a) (((const struct unaligned_32 *) (a))->l)
524 #define LD64(a) (((const struct unaligned_64 *) (a))->l)
525
526 #define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
527
528 #else /* __GNUC__ */
529
530 #define LD16(a) (*((uint16_t*)(a)))
531 #define LD32(a) (*((uint32_t*)(a)))
532 #define LD64(a) (*((uint64_t*)(a)))
533
534 #define ST32(a, b) *((uint32_t*)(a)) = (b)
535
536 #endif /* !__GNUC__ */
537
538 /* PSNR */
539 void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
540 int orig_linesize[3], int coded_linesize,
541 AVCodecContext *avctx);
542
543 /* FFT computation */
544
545 /* NOTE: soon integer code will be added, so you must use the
546 FFTSample type */
547 typedef float FFTSample;
548
549 typedef struct FFTComplex {
550 FFTSample re, im;
551 } FFTComplex;
552
553 typedef struct FFTContext {
554 int nbits;
555 int inverse;
556 uint16_t *revtab;
557 FFTComplex *exptab;
558 FFTComplex *exptab1; /* only used by SSE code */
559 void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
560 } FFTContext;
561
562 int ff_fft_init(FFTContext *s, int nbits, int inverse);
563 void ff_fft_permute(FFTContext *s, FFTComplex *z);
564 void ff_fft_calc_c(FFTContext *s, FFTComplex *z);
565 void ff_fft_calc_sse(FFTContext *s, FFTComplex *z);
566 void ff_fft_calc_altivec(FFTContext *s, FFTComplex *z);
567
568 static inline void ff_fft_calc(FFTContext *s, FFTComplex *z)
569 {
570 s->fft_calc(s, z);
571 }
572 void ff_fft_end(FFTContext *s);
573
574 /* MDCT computation */
575
576 typedef struct MDCTContext {
577 int n; /* size of MDCT (i.e. number of input data * 2) */
578 int nbits; /* n = 2^nbits */
579 /* pre/post rotation tables */
580 FFTSample *tcos;
581 FFTSample *tsin;
582 FFTContext fft;
583 } MDCTContext;
584
585 int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
586 void ff_imdct_calc(MDCTContext *s, FFTSample *output,
587 const FFTSample *input, FFTSample *tmp);
588 void ff_mdct_calc(MDCTContext *s, FFTSample *out,
589 const FFTSample *input, FFTSample *tmp);
590 void ff_mdct_end(MDCTContext *s);
591
592 #define WARPER8_16(name8, name16)\
593 static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride, int h){\
594 return name8(s, dst , src , stride, h)\
595 +name8(s, dst+8 , src+8 , stride, h);\
596 }
597
598 #define WARPER8_16_SQ(name8, name16)\
599 static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride, int h){\
600 int score=0;\
601 score +=name8(s, dst , src , stride, 8);\
602 score +=name8(s, dst+8 , src+8 , stride, 8);\
603 if(h==16){\
604 dst += 8*stride;\
605 src += 8*stride;\
606 score +=name8(s, dst , src , stride, 8);\
607 score +=name8(s, dst+8 , src+8 , stride, 8);\
608 }\
609 return score;\
610 }
611
612 #ifndef HAVE_LRINTF
613 /* XXX: add ISOC specific test to avoid specific BSD testing. */
614 /* better than nothing implementation. */
615 /* btw, rintf() is existing on fbsd too -- alex */
616 static always_inline long int lrintf(float x)
617 {
618 #ifdef CONFIG_WIN32
619 # ifdef ARCH_X86
620 int32_t i;
621 asm volatile(
622 "fistpl %0\n\t"
623 : "=m" (i) : "t" (x) : "st"
624 );
625 return i;
626 # else
627 /* XXX: incorrect, but make it compile */
628 return (int)(x + (x < 0 ? -0.5 : 0.5));
629 # endif
630 #else
631 return (int)(rint(x));
632 #endif
633 }
634 #else
635 #ifndef _ISOC9X_SOURCE
636 #define _ISOC9X_SOURCE
637 #endif
638 #include <math.h>
639 #endif
640
641 #endif