aboutsummaryrefslogtreecommitdiffstats
path: root/libavfilter/libmpcodecs/vf_pp7.c
blob: eae30bf7a112d548f2c98810bb2d40f6998bb950 (plain) (blame)
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
/*
 * Copyright (C) 2005 Michael Niedermayer <michaelni@gmx.at>
 *
 * This file is part of MPlayer.
 *
 * MPlayer 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.
 *
 * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */


#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"

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

#include "libavutil/mem.h"

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

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

typedef short DCTELEM;

//===========================================================================//
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, },
};

struct vf_priv_s {
    int qp;
    int mode;
    int mpeg2;
    int temp_stride;
    uint8_t *src;
};
#if 0
static inline void dct7_c(DCTELEM *dst, int s0, int s1, int s2, int s3, int step){
    int s, d;
    int dst2[64];
//#define S0 (1024/0.37796447300922719759)
#define C0 ((int)(1024*0.37796447300922719759+0.5)) //sqrt(1/7)
#define C1 ((int)(1024*0.53452248382484879308/6+0.5)) //sqrt(2/7)/6

#define C2 ((int)(1024*0.45221175985034745004/2+0.5))
#define C3 ((int)(1024*0.36264567479870879474/2+0.5))

//0.1962505182412941918 0.0149276808419397944-0.2111781990832339584
#define C4 ((int)(1024*0.1962505182412941918+0.5))
#define C5 ((int)(1024*0.0149276808419397944+0.5))
//#define C6 ((int)(1024*0.2111781990832339584+0.5))
#if 0
    s= s0 + s1 + s2;
    dst[0*step] = ((s + s3)*C0 + 512) >> 10;
    s= (s - 6*s3)*C1 + 512;
    d= (s0-s2)*C4 + (s1-s2)*C5;
    dst[1*step] = (s + 2*d)>>10;
    s -= d;
    d= (s1-s0)*C2 + (s1-s2)*C3;
    dst[2*step] = (s + d)>>10;
    dst[3*step] = (s - d)>>10;
#elif 1
    s = s3+s3;
    s3= s-s0;
    s0= s+s0;
    s = s2+s1;
    s2= s2-s1;
    dst[0*step]= s0 + s;
    dst[2*step]= s0 - s;
    dst[1*step]= 2*s3 +   s2;
    dst[3*step]=   s3 - 2*s2;
#else
    int i,j,n=7;
    for(i=0; i<7; i+=2){
        dst2[i*step/2]= 0;
        for(j=0; j<4; j++)
            dst2[i*step/2] += src[j*step] * cos(i*M_PI/n*(j+0.5)) * sqrt((i?2.0:1.0)/n);
        if(fabs(dst2[i*step/2] - dst[i*step/2]) > 20)
            printf("%d %d %d (%d %d %d %d) -> (%d %d %d %d)\n", i,dst2[i*step/2], dst[i*step/2],src[0*step], src[1*step], src[2*step], src[3*step], dst[0*step], dst[1*step],dst[2*step],dst[3*step]);
    }
#endif
}
#endif

static inline void dctA_c(DCTELEM *dst, uint8_t *src, int stride){
    int i;

    for(i=0; i<4; i++){
        int s0=  src[0*stride] + src[6*stride];
        int s1=  src[1*stride] + src[5*stride];
        int s2=  src[2*stride] + src[4*stride];
        int s3=  src[3*stride];
        int s= s3+s3;
        s3= s-s0;
        s0= s+s0;
        s = s2+s1;
        s2= s2-s1;
        dst[0]= s0 + s;
        dst[2]= s0 - s;
        dst[1]= 2*s3 +   s2;
        dst[3]=   s3 - 2*s2;
        src++;
        dst+=4;
    }
}

static void dctB_c(DCTELEM *dst, DCTELEM *src){
    int i;

    for(i=0; i<4; i++){
        int s0=  src[0*4] + src[6*4];
        int s1=  src[1*4] + src[5*4];
        int s2=  src[2*4] + src[4*4];
        int s3=  src[3*4];
        int s= s3+s3;
        s3= s-s0;
        s0= s+s0;
        s = s2+s1;
        s2= s2-s1;
        dst[0*4]= s0 + s;
        dst[2*4]= s0 - s;
        dst[1*4]= 2*s3 +   s2;
        dst[3*4]=   s3 - 2*s2;
        src++;
        dst++;
    }
}

#if HAVE_MMX
static void dctB_mmx(DCTELEM *dst, DCTELEM *src){
    __asm__ volatile (
        "movq  (%0), %%mm0      \n\t"
        "movq  1*4*2(%0), %%mm1 \n\t"
        "paddw 6*4*2(%0), %%mm0 \n\t"
        "paddw 5*4*2(%0), %%mm1 \n\t"
        "movq  2*4*2(%0), %%mm2 \n\t"
        "movq  3*4*2(%0), %%mm3 \n\t"
        "paddw 4*4*2(%0), %%mm2 \n\t"
        "paddw %%mm3, %%mm3     \n\t" //s
        "movq %%mm3, %%mm4      \n\t" //s
        "psubw %%mm0, %%mm3     \n\t" //s-s0
        "paddw %%mm0, %%mm4     \n\t" //s+s0
        "movq %%mm2, %%mm0      \n\t" //s2
        "psubw %%mm1, %%mm2     \n\t" //s2-s1
        "paddw %%mm1, %%mm0     \n\t" //s2+s1
        "movq %%mm4, %%mm1      \n\t" //s0'
        "psubw %%mm0, %%mm4     \n\t" //s0'-s'
        "paddw %%mm0, %%mm1     \n\t" //s0'+s'
        "movq %%mm3, %%mm0      \n\t" //s3'
        "psubw %%mm2, %%mm3     \n\t"
        "psubw %%mm2, %%mm3     \n\t"
        "paddw %%mm0, %%mm2     \n\t"
        "paddw %%mm0, %%mm2     \n\t"
        "movq %%mm1, (%1)       \n\t"
        "movq %%mm4, 2*4*2(%1)  \n\t"
        "movq %%mm2, 1*4*2(%1)  \n\t"
        "movq %%mm3, 3*4*2(%1)  \n\t"
        :: "r" (src), "r"(dst)
    );
}
#endif

static void (*dctB)(DCTELEM *dst, DCTELEM *src)= dctB_c;

#define N0 4
#define N1 5
#define N2 10
#define SN0 2
#define SN1 2.2360679775
#define SN2 3.16227766017
#define N (1<<16)

static const int factor[16]={
    N/(N0*N0), N/(N0*N1), N/(N0*N0),N/(N0*N2),
    N/(N1*N0), N/(N1*N1), N/(N1*N0),N/(N1*N2),
    N/(N0*N0), N/(N0*N1), N/(N0*N0),N/(N0*N2),
    N/(N2*N0), N/(N2*N1), N/(N2*N0),N/(N2*N2),
};

static const int thres[16]={
    N/(SN0*SN0), N/(SN0*SN2), N/(SN0*SN0),N/(SN0*SN2),
    N/(SN2*SN0), N/(SN2*SN2), N/(SN2*SN0),N/(SN2*SN2),
    N/(SN0*SN0), N/(SN0*SN2), N/(SN0*SN0),N/(SN0*SN2),
    N/(SN2*SN0), N/(SN2*SN2), N/(SN2*SN0),N/(SN2*SN2),
};

static int thres2[99][16];

static void init_thres2(void){
    int qp, i;
    int bias= 0; //FIXME

    for(qp=0; qp<99; qp++){
        for(i=0; i<16; i++){
            thres2[qp][i]= ((i&1)?SN2:SN0) * ((i&4)?SN2:SN0) * XMAX(1,qp) * (1<<2) - 1 - bias;
        }
    }
}

static int hardthresh_c(DCTELEM *src, int qp){
    int i;
    int a;

    a= src[0] * factor[0];
    for(i=1; i<16; i++){
        unsigned int threshold1= thres2[qp][i];
        unsigned int threshold2= (threshold1<<1);
        int level= src[i];
        if(((unsigned)(level+threshold1))>threshold2){
            a += level * factor[i];
        }
    }
    return (a + (1<<11))>>12;
}

static int mediumthresh_c(DCTELEM *src, int qp){
    int i;
    int a;

    a= src[0] * factor[0];
    for(i=1; i<16; i++){
        unsigned int threshold1= thres2[qp][i];
        unsigned int threshold2= (threshold1<<1);
        int level= src[i];
        if(((unsigned)(level+threshold1))>threshold2){
            if(((unsigned)(level+2*threshold1))>2*threshold2){
                a += level * factor[i];
            }else{
                if(level>0) a+= 2*(level - (int)threshold1)*factor[i];
                else        a+= 2*(level + (int)threshold1)*factor[i];
            }
        }
    }
    return (a + (1<<11))>>12;
}

static int softthresh_c(DCTELEM *src, int qp){
    int i;
    int a;

    a= src[0] * factor[0];
    for(i=1; i<16; i++){
        unsigned int threshold1= thres2[qp][i];
        unsigned int threshold2= (threshold1<<1);
        int level= src[i];
        if(((unsigned)(level+threshold1))>threshold2){
            if(level>0) a+= (level - (int)threshold1)*factor[i];
            else        a+= (level + (int)threshold1)*factor[i];
        }
    }
    return (a + (1<<11))>>12;
}

static int (*requantize)(DCTELEM *src, int qp)= 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;
    const int stride= is_luma ? p->temp_stride : ((width+16+15)&(~15));
    uint8_t  *p_src= p->src + 8*stride;
    DCTELEM *block= (DCTELEM *)p->src;
    DCTELEM *temp= (DCTELEM *)(p->src + 32);

    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; y++){
        for(x=-8; x<0; x+=4){
            const int index= x + y*stride + (8-3)*(1+stride) + 8; //FIXME silly offset
            uint8_t *src  = p_src + index;
            DCTELEM *tp= temp+4*x;

            dctA_c(tp+4*8, src, stride);
        }
        for(x=0; x<width; ){
            const int qps= 3 + is_luma;
            int qp;
            int end= XMIN(x+8, width);

            if(p->qp)
                qp= p->qp;
            else{
                qp= qp_store[ (XMIN(x, width-1)>>qps) + (XMIN(y, height-1)>>qps) * qp_stride];
                qp=norm_qscale(qp, p->mpeg2);
            }
            for(; x<end; x++){
                const int index= x + y*stride + (8-3)*(1+stride) + 8; //FIXME silly offset
                uint8_t *src  = p_src + index;
                DCTELEM *tp= temp+4*x;
                int v;

                if((x&3)==0)
                    dctA_c(tp+4*8, src, stride);

                dctB(block, tp);

                v= requantize(block, qp);
                v= (v + dither[y&7][x&7])>>6;
                if((unsigned)v > 255)
                    v= (-v)>>31;
                dst[x + y*dst_stride]= v;
            }
        }
    }
}

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->src = av_malloc(vf->priv->temp_stride*(h+8)*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){
        dmpi=vf->dmpi;
    }else{
        // 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);
    }

    vf->priv->mpeg2= mpi->qscale_type;
    if(mpi->qscale || vf->priv->qp){
        filter(vf->priv, dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h, mpi->qscale, 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, mpi->qscale, 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, mpi->qscale, 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]);
    }

#if HAVE_MMX
    if(gCpuCaps.hasMMX) __asm__ volatile ("emms\n\t");
#endif
#if 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;

    av_free(vf->priv->src);
    vf->priv->src= 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){
    return vf_next_control(vf,request,data);
}

static int vf_open(vf_instance_t *vf, char *args){
    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));

    if (args) sscanf(args, "%d:%d", &vf->priv->qp, &vf->priv->mode);

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

    init_thres2();

    switch(vf->priv->mode){
        case 0: requantize= hardthresh_c; break;
        case 1: requantize= softthresh_c; break;
        default:
        case 2: requantize= mediumthresh_c; break;
    }

#if HAVE_MMX
    if(gCpuCaps.hasMMX){
        dctB= dctB_mmx;
    }
#endif
#if 0
    if(gCpuCaps.hasMMX){
        switch(vf->priv->mode){
            case 0: requantize= hardthresh_mmx; break;
            case 1: requantize= softthresh_mmx; break;
        }
    }
#endif

    return 1;
}

const vf_info_t vf_info_pp7 = {
    "postprocess 7",
    "pp7",
    "Michael Niedermayer",
    "",
    vf_open,
    NULL
};