summaryrefslogtreecommitdiffstats
path: root/libmpcodecs/vf_spp.c
blob: ff5f30e0bc6568f238dd2d6b16fe5136a484f6dc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
/*
    Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/

/*
 * This implementation is based on an algorithm described in
 * "Aria Nosratinia Embedded Post-Processing for 
 * Enhancement of Compressed Images (1999)"
 * (http://citeseer.nj.nec.com/nosratinia99embedded.html)
 */

 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <math.h>

#include "config.h"

#include "mp_msg.h"
#include "cpudetect.h"

#include "libavutil/intreadwrite.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/dsputil.h"

#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif

#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libvo/fastmemcpy.h"

#define XMIN(a,b) ((a) < (b) ? (a) : (b))

//===========================================================================//
static const uint8_t  __attribute__((aligned(8))) dither[8][8]={
{  0,  48,  12,  60,   3,  51,  15,  63, },
{ 32,  16,  44,  28,  35,  19,  47,  31, },
{  8,  56,   4,  52,  11,  59,   7,  55, },
{ 40,  24,  36,  20,  43,  27,  39,  23, },
{  2,  50,  14,  62,   1,  49,  13,  61, },
{ 34,  18,  46,  30,  33,  17,  45,  29, },
{ 10,  58,   6,  54,   9,  57,   5,  53, },
{ 42,  26,  38,  22,  41,  25,  37,  21, },
};

static const uint8_t offset[127][2]= {
{0,0},
{0,0}, {4,4},
{0,0}, {2,2}, {6,4}, {4,6},
{0,0}, {5,1}, {2,2}, {7,3}, {4,4}, {1,5}, {6,6}, {3,7}, 

{0,0}, {4,0}, {1,1}, {5,1}, {3,2}, {7,2}, {2,3}, {6,3}, 
{0,4}, {4,4}, {1,5}, {5,5}, {3,6}, {7,6}, {2,7}, {6,7}, 

{0,0}, {0,2}, {0,4}, {0,6}, {1,1}, {1,3}, {1,5}, {1,7}, 
{2,0}, {2,2}, {2,4}, {2,6}, {3,1}, {3,3}, {3,5}, {3,7}, 
{4,0}, {4,2}, {4,4}, {4,6}, {5,1}, {5,3}, {5,5}, {5,7}, 
{6,0}, {6,2}, {6,4}, {6,6}, {7,1}, {7,3}, {7,5}, {7,7}, 

{0,0}, {4,4}, {0,4}, {4,0}, {2,2}, {6,6}, {2,6}, {6,2}, 
{0,2}, {4,6}, {0,6}, {4,2}, {2,0}, {6,4}, {2,4}, {6,0}, 
{1,1}, {5,5}, {1,5}, {5,1}, {3,3}, {7,7}, {3,7}, {7,3}, 
{1,3}, {5,7}, {1,7}, {5,3}, {3,1}, {7,5}, {3,5}, {7,1}, 
{0,1}, {4,5}, {0,5}, {4,1}, {2,3}, {6,7}, {2,7}, {6,3}, 
{0,3}, {4,7}, {0,7}, {4,3}, {2,1}, {6,5}, {2,5}, {6,1}, 
{1,0}, {5,4}, {1,4}, {5,0}, {3,2}, {7,6}, {3,6}, {7,2}, 
{1,2}, {5,6}, {1,6}, {5,2}, {3,0}, {7,4}, {3,4}, {7,0},
};

struct vf_priv_s {
	int log2_count;
	int qp;
	int mode;
	int mpeg2;
	int temp_stride;
	uint8_t *src;
	int16_t *temp;
	AVCodecContext *avctx;
	DSPContext dsp;
        char *non_b_qp;
};

#define SHIFT 22

static void hardthresh_c(DCTELEM dst[64], DCTELEM src[64], int qp, uint8_t *permutation){
	int i; 
	int bias= 0; //FIXME
	unsigned int threshold1, threshold2;
	
	threshold1= qp*((1<<4) - bias) - 1;
	threshold2= (threshold1<<1);
        
	memset(dst, 0, 64*sizeof(DCTELEM));
	dst[0]= (src[0] + 4)>>3;

        for(i=1; i<64; i++){
		int level= src[i];
		if(((unsigned)(level+threshold1))>threshold2){
			const int j= permutation[i];
			dst[j]= (level + 4)>>3;
		}
	}
}

static void softthresh_c(DCTELEM dst[64], DCTELEM src[64], int qp, uint8_t *permutation){
	int i; 
	int bias= 0; //FIXME
	unsigned int threshold1, threshold2;
	
	threshold1= qp*((1<<4) - bias) - 1;
	threshold2= (threshold1<<1);
        
	memset(dst, 0, 64*sizeof(DCTELEM));
	dst[0]= (src[0] + 4)>>3;

        for(i=1; i<64; i++){
		int level= src[i];
		if(((unsigned)(level+threshold1))>threshold2){
			const int j= permutation[i];
			if(level>0)
				dst[j]= (level - threshold1 + 4)>>3;
			else
				dst[j]= (level + threshold1 + 4)>>3;
		}
	}
}

#ifdef HAVE_MMX
static void hardthresh_mmx(DCTELEM dst[64], DCTELEM src[64], int qp, uint8_t *permutation){
	int bias= 0; //FIXME
	unsigned int threshold1;
	
	threshold1= qp*((1<<4) - bias) - 1;
	
        asm volatile(
#define REQUANT_CORE(dst0, dst1, dst2, dst3, src0, src1, src2, src3) \
		"movq " #src0 ", %%mm0	\n\t"\
		"movq " #src1 ", %%mm1	\n\t"\
		"movq " #src2 ", %%mm2	\n\t"\
		"movq " #src3 ", %%mm3	\n\t"\
		"psubw %%mm4, %%mm0	\n\t"\
		"psubw %%mm4, %%mm1	\n\t"\
		"psubw %%mm4, %%mm2	\n\t"\
		"psubw %%mm4, %%mm3	\n\t"\
		"paddusw %%mm5, %%mm0	\n\t"\
		"paddusw %%mm5, %%mm1	\n\t"\
		"paddusw %%mm5, %%mm2	\n\t"\
		"paddusw %%mm5, %%mm3	\n\t"\
		"paddw %%mm6, %%mm0	\n\t"\
		"paddw %%mm6, %%mm1	\n\t"\
		"paddw %%mm6, %%mm2	\n\t"\
		"paddw %%mm6, %%mm3	\n\t"\
		"psubusw %%mm6, %%mm0	\n\t"\
		"psubusw %%mm6, %%mm1	\n\t"\
		"psubusw %%mm6, %%mm2	\n\t"\
		"psubusw %%mm6, %%mm3	\n\t"\
		"psraw $3, %%mm0	\n\t"\
		"psraw $3, %%mm1	\n\t"\
		"psraw $3, %%mm2	\n\t"\
		"psraw $3, %%mm3	\n\t"\
\
		"movq %%mm0, %%mm7	\n\t"\
		"punpcklwd %%mm2, %%mm0	\n\t" /*A*/\
		"punpckhwd %%mm2, %%mm7	\n\t" /*C*/\
		"movq %%mm1, %%mm2	\n\t"\
		"punpcklwd %%mm3, %%mm1	\n\t" /*B*/\
		"punpckhwd %%mm3, %%mm2	\n\t" /*D*/\
		"movq %%mm0, %%mm3	\n\t"\
		"punpcklwd %%mm1, %%mm0	\n\t" /*A*/\
		"punpckhwd %%mm7, %%mm3	\n\t" /*C*/\
		"punpcklwd %%mm2, %%mm7	\n\t" /*B*/\
		"punpckhwd %%mm2, %%mm1	\n\t" /*D*/\
\
		"movq %%mm0, " #dst0 "	\n\t"\
		"movq %%mm7, " #dst1 "	\n\t"\
		"movq %%mm3, " #dst2 "	\n\t"\
		"movq %%mm1, " #dst3 "	\n\t"
                
		"movd %2, %%mm4		\n\t"
		"movd %3, %%mm5		\n\t"
		"movd %4, %%mm6		\n\t"
		"packssdw %%mm4, %%mm4	\n\t"
		"packssdw %%mm5, %%mm5	\n\t"
		"packssdw %%mm6, %%mm6	\n\t"
		"packssdw %%mm4, %%mm4	\n\t"
		"packssdw %%mm5, %%mm5	\n\t"
		"packssdw %%mm6, %%mm6	\n\t"
		REQUANT_CORE(  (%1),  8(%1), 16(%1), 24(%1),  (%0), 8(%0), 64(%0), 72(%0))
		REQUANT_CORE(32(%1), 40(%1), 48(%1), 56(%1),16(%0),24(%0), 48(%0), 56(%0))
		REQUANT_CORE(64(%1), 72(%1), 80(%1), 88(%1),32(%0),40(%0), 96(%0),104(%0))
		REQUANT_CORE(96(%1),104(%1),112(%1),120(%1),80(%0),88(%0),112(%0),120(%0))
		: : "r" (src), "r" (dst), "g" (threshold1+1), "g" (threshold1+5), "g" (threshold1-4) //FIXME maybe more accurate then needed?
	);
	dst[0]= (src[0] + 4)>>3;
}

static void softthresh_mmx(DCTELEM dst[64], DCTELEM src[64], int qp, uint8_t *permutation){
	int bias= 0; //FIXME
	unsigned int threshold1;

	threshold1= qp*((1<<4) - bias) - 1;
	
        asm volatile(
#undef REQUANT_CORE
#define REQUANT_CORE(dst0, dst1, dst2, dst3, src0, src1, src2, src3) \
		"movq " #src0 ", %%mm0	\n\t"\
		"movq " #src1 ", %%mm1	\n\t"\
		"pxor %%mm6, %%mm6	\n\t"\
		"pxor %%mm7, %%mm7	\n\t"\
		"pcmpgtw %%mm0, %%mm6	\n\t"\
		"pcmpgtw %%mm1, %%mm7	\n\t"\
		"pxor %%mm6, %%mm0	\n\t"\
		"pxor %%mm7, %%mm1	\n\t"\
		"psubusw %%mm4, %%mm0	\n\t"\
		"psubusw %%mm4, %%mm1	\n\t"\
		"pxor %%mm6, %%mm0	\n\t"\
		"pxor %%mm7, %%mm1	\n\t"\
		"movq " #src2 ", %%mm2	\n\t"\
		"movq " #src3 ", %%mm3	\n\t"\
		"pxor %%mm6, %%mm6	\n\t"\
		"pxor %%mm7, %%mm7	\n\t"\
		"pcmpgtw %%mm2, %%mm6	\n\t"\
		"pcmpgtw %%mm3, %%mm7	\n\t"\
		"pxor %%mm6, %%mm2	\n\t"\
		"pxor %%mm7, %%mm3	\n\t"\
		"psubusw %%mm4, %%mm2	\n\t"\
		"psubusw %%mm4, %%mm3	\n\t"\
		"pxor %%mm6, %%mm2	\n\t"\
		"pxor %%mm7, %%mm3	\n\t"\
\
		"paddsw %%mm5, %%mm0	\n\t"\
		"paddsw %%mm5, %%mm1	\n\t"\
		"paddsw %%mm5, %%mm2	\n\t"\
		"paddsw %%mm5, %%mm3	\n\t"\
		"psraw $3, %%mm0	\n\t"\
		"psraw $3, %%mm1	\n\t"\
		"psraw $3, %%mm2	\n\t"\
		"psraw $3, %%mm3	\n\t"\
\
		"movq %%mm0, %%mm7	\n\t"\
		"punpcklwd %%mm2, %%mm0	\n\t" /*A*/\
		"punpckhwd %%mm2, %%mm7	\n\t" /*C*/\
		"movq %%mm1, %%mm2	\n\t"\
		"punpcklwd %%mm3, %%mm1	\n\t" /*B*/\
		"punpckhwd %%mm3, %%mm2	\n\t" /*D*/\
		"movq %%mm0, %%mm3	\n\t"\
		"punpcklwd %%mm1, %%mm0	\n\t" /*A*/\
		"punpckhwd %%mm7, %%mm3	\n\t" /*C*/\
		"punpcklwd %%mm2, %%mm7	\n\t" /*B*/\
		"punpckhwd %%mm2, %%mm1	\n\t" /*D*/\
\
		"movq %%mm0, " #dst0 "	\n\t"\
		"movq %%mm7, " #dst1 "	\n\t"\
		"movq %%mm3, " #dst2 "	\n\t"\
		"movq %%mm1, " #dst3 "	\n\t"
                
		"movd %2, %%mm4		\n\t"
		"movd %3, %%mm5		\n\t"
		"packssdw %%mm4, %%mm4	\n\t"
		"packssdw %%mm5, %%mm5	\n\t"
		"packssdw %%mm4, %%mm4	\n\t"
		"packssdw %%mm5, %%mm5	\n\t"
		REQUANT_CORE(  (%1),  8(%1), 16(%1), 24(%1),  (%0), 8(%0), 64(%0), 72(%0))
		REQUANT_CORE(32(%1), 40(%1), 48(%1), 56(%1),16(%0),24(%0), 48(%0), 56(%0))
		REQUANT_CORE(64(%1), 72(%1), 80(%1), 88(%1),32(%0),40(%0), 96(%0),104(%0))
		REQUANT_CORE(96(%1),104(%1),112(%1),120(%1),80(%0),88(%0),112(%0),120(%0))
		: : "r" (src), "r" (dst), "g" (threshold1), "rm" (4) //FIXME maybe more accurate then needed?
	);

	dst[0]= (src[0] + 4)>>3;
}
#endif

static inline void add_block(int16_t *dst, int stride, DCTELEM block[64]){
	int y;
	
	for(y=0; y<8; y++){
		*(uint32_t*)&dst[0 + y*stride]+= *(uint32_t*)&block[0 + y*8];
		*(uint32_t*)&dst[2 + y*stride]+= *(uint32_t*)&block[2 + y*8];
		*(uint32_t*)&dst[4 + y*stride]+= *(uint32_t*)&block[4 + y*8];
		*(uint32_t*)&dst[6 + y*stride]+= *(uint32_t*)&block[6 + y*8];
	}
}

static void store_slice_c(uint8_t *dst, int16_t *src, int dst_stride, int src_stride, int width, int height, int log2_scale){
	int y, x;

#define STORE(pos) \
	temp= ((src[x + y*src_stride + pos]<<log2_scale) + d[pos])>>6;\
	if(temp & 0x100) temp= ~(temp>>31);\
	dst[x + y*dst_stride + pos]= temp;

	for(y=0; y<height; y++){
		const uint8_t *d= dither[y];
		for(x=0; x<width; x+=8){
			int temp;
			STORE(0);
			STORE(1);
			STORE(2);
			STORE(3);
			STORE(4);
			STORE(5);
			STORE(6);
			STORE(7);
		}
	}
}

#ifdef HAVE_MMX
static void store_slice_mmx(uint8_t *dst, int16_t *src, int dst_stride, int src_stride, int width, int height, int log2_scale){
	int y;

	for(y=0; y<height; y++){
		uint8_t *dst1= dst;
		int16_t *src1= src;
		asm volatile(
			"movq (%3), %%mm3	\n\t"
			"movq (%3), %%mm4	\n\t"
			"movd %4, %%mm2		\n\t"
			"pxor %%mm0, %%mm0	\n\t"
			"punpcklbw %%mm0, %%mm3	\n\t"
			"punpckhbw %%mm0, %%mm4	\n\t"
			"psraw %%mm2, %%mm3	\n\t"
			"psraw %%mm2, %%mm4	\n\t"
			"movd %5, %%mm2		\n\t"
			"1:			\n\t"
			"movq (%0), %%mm0	\n\t"
			"movq 8(%0), %%mm1	\n\t"
			"paddw %%mm3, %%mm0	\n\t"
			"paddw %%mm4, %%mm1	\n\t"
			"psraw %%mm2, %%mm0	\n\t"
			"psraw %%mm2, %%mm1	\n\t"
			"packuswb %%mm1, %%mm0	\n\t"
			"movq %%mm0, (%1) 	\n\t"
			"add $16, %0		\n\t"
			"add $8, %1		\n\t"
			"cmp %2, %1		\n\t"
			" jb 1b			\n\t"
			: "+r" (src1), "+r"(dst1)
			: "r"(dst + width), "r"(dither[y]), "g"(log2_scale), "g"(6-log2_scale)
		);
		src += src_stride;
		dst += dst_stride;
	}
//	if(width != mmxw)
//		store_slice_c(dst + mmxw, src + mmxw, dst_stride, src_stride, width - mmxw, log2_scale);
}
#endif

static void (*store_slice)(uint8_t *dst, int16_t *src, int dst_stride, int src_stride, int width, int height, int log2_scale)= store_slice_c;

static void (*requantize)(DCTELEM dst[64], DCTELEM src[64], int qp, uint8_t *permutation)= hardthresh_c;

static void filter(struct vf_priv_s *p, uint8_t *dst, uint8_t *src, int dst_stride, int src_stride, int width, int height, uint8_t *qp_store, int qp_stride, int is_luma){
	int x, y, i;
	const int count= 1<<p->log2_count;
	const int stride= is_luma ? p->temp_stride : ((width+16+15)&(~15));
	uint64_t __attribute__((aligned(16))) block_align[32];
	DCTELEM *block = (DCTELEM *)block_align;
	DCTELEM *block2= (DCTELEM *)(block_align+16);

	if (!src || !dst) return; // HACK avoid crash for Y8 colourspace
	for(y=0; y<height; y++){
		int index= 8 + 8*stride + y*stride;
		fast_memcpy(p->src + index, src + y*src_stride, width);
		for(x=0; x<8; x++){ 
			p->src[index         - x - 1]= p->src[index +         x    ];
			p->src[index + width + x    ]= p->src[index + width - x - 1];
		}
	}
	for(y=0; y<8; y++){
		fast_memcpy(p->src + (      7-y)*stride, p->src + (      y+8)*stride, stride);
		fast_memcpy(p->src + (height+8+y)*stride, p->src + (height-y+7)*stride, stride);
	}
	//FIXME (try edge emu)

	for(y=0; y<height+8; y+=8){
		memset(p->temp + (8+y)*stride, 0, 8*stride*sizeof(int16_t));
		for(x=0; x<width+8; x+=8){
			const int qps= 3 + is_luma;
			int qp;
                        
			if(p->qp)
				qp= p->qp;
			else{
				qp= qp_store[ (XMIN(x, width-1)>>qps) + (XMIN(y, height-1)>>qps) * qp_stride];
				if(p->mpeg2) qp = FFMAX(1, qp>>1);
			}
			for(i=0; i<count; i++){
				const int x1= x + offset[i+count-1][0];
				const int y1= y + offset[i+count-1][1];
				const int index= x1 + y1*stride;
				p->dsp.get_pixels(block, p->src + index, stride);
				p->dsp.fdct(block);
				requantize(block2, block, qp, p->dsp.idct_permutation);
				p->dsp.idct(block2);
				add_block(p->temp + index, stride, block2);
			}
		}
		if(y)
			store_slice(dst + (y-8)*dst_stride, p->temp + 8 + y*stride, dst_stride, stride, width, XMIN(8, height+8-y), 6-p->log2_count);
	}
#if 0
	for(y=0; y<height; y++){
		for(x=0; x<width; x++){
			if((((x>>6) ^ (y>>6)) & 1) == 0)
				dst[x + y*dst_stride]= p->src[8 + 8*stride  + x + y*stride];
			if((x&63) == 0 || (y&63)==0)
				dst[x + y*dst_stride] += 128;
                }
	}
#endif
	//FIXME reorder for better caching
}

static int config(struct vf_instance* vf,
        int width, int height, int d_width, int d_height,
	unsigned int flags, unsigned int outfmt){
	int h= (height+16+15)&(~15);

	vf->priv->temp_stride= (width+16+15)&(~15);
        vf->priv->temp= malloc(vf->priv->temp_stride*h*sizeof(int16_t));
        vf->priv->src = malloc(vf->priv->temp_stride*h*sizeof(uint8_t));
        
	return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}

static void get_image(struct vf_instance* vf, mp_image_t *mpi){
    if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
    // ok, we can do pp in-place (or pp disabled):
    vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
        mpi->type, mpi->flags | MP_IMGFLAG_READABLE, mpi->width, mpi->height);
    mpi->planes[0]=vf->dmpi->planes[0];
    mpi->stride[0]=vf->dmpi->stride[0];
    mpi->width=vf->dmpi->width;
    if(mpi->flags&MP_IMGFLAG_PLANAR){
        mpi->planes[1]=vf->dmpi->planes[1];
        mpi->planes[2]=vf->dmpi->planes[2];
	mpi->stride[1]=vf->dmpi->stride[1];
	mpi->stride[2]=vf->dmpi->stride[2];
    }
    mpi->flags|=MP_IMGFLAG_DIRECT;
}

static int put_image(struct vf_instance* vf, mp_image_t *mpi, double pts){
	mp_image_t *dmpi;

	if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
		// no DR, so get a new image! hope we'll get DR buffer:
                dmpi=vf_get_image(vf->next,mpi->imgfmt,
                    MP_IMGTYPE_TEMP,
                    MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
                    mpi->width,mpi->height);
                vf_clone_mpi_attributes(dmpi, mpi);
        }else{
           dmpi=vf->dmpi;
        }

        vf->priv->mpeg2= mpi->qscale_type;
        if(mpi->pict_type != 3 && mpi->qscale && !vf->priv->qp){
            if(!vf->priv->non_b_qp)
                vf->priv->non_b_qp= malloc(mpi->qstride * ((mpi->h + 15) >> 4));
            fast_memcpy(vf->priv->non_b_qp, mpi->qscale, mpi->qstride * ((mpi->h + 15) >> 4));
        }
	if(vf->priv->log2_count || !(mpi->flags&MP_IMGFLAG_DIRECT)){
            char *qp_tab= vf->priv->non_b_qp;
            if((vf->priv->mode&4) || !qp_tab)
                qp_tab= mpi->qscale;

	    if(qp_tab || vf->priv->qp){
		filter(vf->priv, dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h, qp_tab, mpi->qstride, 1);
		filter(vf->priv, dmpi->planes[1], mpi->planes[1], dmpi->stride[1], mpi->stride[1], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, qp_tab, mpi->qstride, 0);
		filter(vf->priv, dmpi->planes[2], mpi->planes[2], dmpi->stride[2], mpi->stride[2], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, qp_tab, mpi->qstride, 0);
	    }else{
		memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, dmpi->stride[0], mpi->stride[0]);
		memcpy_pic(dmpi->planes[1], mpi->planes[1], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[1], mpi->stride[1]);
		memcpy_pic(dmpi->planes[2], mpi->planes[2], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[2], mpi->stride[2]);
	    }
	}

#ifdef HAVE_MMX
	if(gCpuCaps.hasMMX) asm volatile ("emms\n\t");
#endif
#ifdef HAVE_MMX2
	if(gCpuCaps.hasMMX2) asm volatile ("sfence\n\t");
#endif

	return vf_next_put_image(vf,dmpi, pts);
}

static void uninit(struct vf_instance* vf){
	if(!vf->priv) return;

	if(vf->priv->temp) free(vf->priv->temp);
	vf->priv->temp= NULL;
	if(vf->priv->src) free(vf->priv->src);
	vf->priv->src= NULL;
        if(vf->priv->avctx) free(vf->priv->avctx);
        vf->priv->avctx= NULL;
        if(vf->priv->non_b_qp) free(vf->priv->non_b_qp);
        vf->priv->non_b_qp= NULL;
	
	free(vf->priv);
	vf->priv=NULL;
}

//===========================================================================//
static int query_format(struct vf_instance* vf, unsigned int fmt){
    switch(fmt){
	case IMGFMT_YVU9:
	case IMGFMT_IF09:
	case IMGFMT_YV12:
	case IMGFMT_I420:
	case IMGFMT_IYUV:
	case IMGFMT_CLPL:
	case IMGFMT_Y800:
	case IMGFMT_Y8:
	case IMGFMT_444P:
	case IMGFMT_422P:
	case IMGFMT_411P:
	    return vf_next_query_format(vf,fmt);
    }
    return 0;
}

static int control(struct vf_instance* vf, int request, void* data){
    switch(request){
    case VFCTRL_QUERY_MAX_PP_LEVEL:
	return 6;
    case VFCTRL_SET_PP_LEVEL:
	vf->priv->log2_count= *((unsigned int*)data);
	return CONTROL_TRUE;
    }
    return vf_next_control(vf,request,data);
}

static int open(vf_instance_t *vf, char* args){

    int log2c=-1;
    
    vf->config=config;
    vf->put_image=put_image;
    vf->get_image=get_image;
    vf->query_format=query_format;
    vf->uninit=uninit;
    vf->control= control;
    vf->priv=malloc(sizeof(struct vf_priv_s));
    memset(vf->priv, 0, sizeof(struct vf_priv_s));
    
    avcodec_init();

    vf->priv->avctx= avcodec_alloc_context();
    dsputil_init(&vf->priv->dsp, vf->priv->avctx);
    
    vf->priv->log2_count= 3;
    
    if (args) sscanf(args, "%d:%d:%d", &log2c, &vf->priv->qp, &vf->priv->mode);

    if( log2c >=0 && log2c <=6 )
        vf->priv->log2_count = log2c;

    if(vf->priv->qp < 0)
        vf->priv->qp = 0;

    switch(vf->priv->mode&3){
        default:
	case 0: requantize= hardthresh_c; break;
	case 1: requantize= softthresh_c; break;
    }

#ifdef HAVE_MMX
    if(gCpuCaps.hasMMX){
	store_slice= store_slice_mmx;
	switch(vf->priv->mode&3){
	    case 0: requantize= hardthresh_mmx; break;
	    case 1: requantize= softthresh_mmx; break;
	}
    }
#endif
    
    return 1;
}

const vf_info_t vf_info_spp = {
    "simple postprocess",
    "spp",
    "Michael Niedermayer",
    "",
    open,
    NULL
};