FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vf_pp7.c
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2005 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of MPlayer.
5  *
6  * MPlayer is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * MPlayer 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
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <inttypes.h>
26 #include <math.h>
27 
28 #include "config.h"
29 
30 #include "mp_msg.h"
31 #include "cpudetect.h"
32 
33 #if HAVE_MALLOC_H
34 #include <malloc.h>
35 #endif
36 
37 #include "libavutil/mem.h"
38 
39 #include "img_format.h"
40 #include "mp_image.h"
41 #include "vf.h"
42 #include "libvo/fastmemcpy.h"
43 
44 #define XMIN(a,b) ((a) < (b) ? (a) : (b))
45 #define XMAX(a,b) ((a) > (b) ? (a) : (b))
46 
47 //===========================================================================//
48 static const uint8_t __attribute__((aligned(8))) dither[8][8]={
49 { 0, 48, 12, 60, 3, 51, 15, 63, },
50 { 32, 16, 44, 28, 35, 19, 47, 31, },
51 { 8, 56, 4, 52, 11, 59, 7, 55, },
52 { 40, 24, 36, 20, 43, 27, 39, 23, },
53 { 2, 50, 14, 62, 1, 49, 13, 61, },
54 { 34, 18, 46, 30, 33, 17, 45, 29, },
55 { 10, 58, 6, 54, 9, 57, 5, 53, },
56 { 42, 26, 38, 22, 41, 25, 37, 21, },
57 };
58 
59 struct vf_priv_s {
60  int qp;
61  int mode;
62  int mpeg2;
63  int temp_stride;
64  uint8_t *src;
65 };
66 #if 0
67 static inline void dct7_c(int16_t *dst, int s0, int s1, int s2, int s3, int step){
68  int s, d;
69  int dst2[64];
70 //#define S0 (1024/0.37796447300922719759)
71 #define C0 ((int)(1024*0.37796447300922719759+0.5)) //sqrt(1/7)
72 #define C1 ((int)(1024*0.53452248382484879308/6+0.5)) //sqrt(2/7)/6
73 
74 #define C2 ((int)(1024*0.45221175985034745004/2+0.5))
75 #define C3 ((int)(1024*0.36264567479870879474/2+0.5))
76 
77 //0.1962505182412941918 0.0149276808419397944-0.2111781990832339584
78 #define C4 ((int)(1024*0.1962505182412941918+0.5))
79 #define C5 ((int)(1024*0.0149276808419397944+0.5))
80 //#define C6 ((int)(1024*0.2111781990832339584+0.5))
81 #if 0
82  s= s0 + s1 + s2;
83  dst[0*step] = ((s + s3)*C0 + 512) >> 10;
84  s= (s - 6*s3)*C1 + 512;
85  d= (s0-s2)*C4 + (s1-s2)*C5;
86  dst[1*step] = (s + 2*d)>>10;
87  s -= d;
88  d= (s1-s0)*C2 + (s1-s2)*C3;
89  dst[2*step] = (s + d)>>10;
90  dst[3*step] = (s - d)>>10;
91 #elif 1
92  s = s3+s3;
93  s3= s-s0;
94  s0= s+s0;
95  s = s2+s1;
96  s2= s2-s1;
97  dst[0*step]= s0 + s;
98  dst[2*step]= s0 - s;
99  dst[1*step]= 2*s3 + s2;
100  dst[3*step]= s3 - 2*s2;
101 #else
102  int i,j,n=7;
103  for(i=0; i<7; i+=2){
104  dst2[i*step/2]= 0;
105  for(j=0; j<4; j++)
106  dst2[i*step/2] += src[j*step] * cos(i*M_PI/n*(j+0.5)) * sqrt((i?2.0:1.0)/n);
107  if(fabs(dst2[i*step/2] - dst[i*step/2]) > 20)
108  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]);
109  }
110 #endif
111 }
112 #endif
113 
114 static inline void dctA_c(int16_t *dst, uint8_t *src, int stride){
115  int i;
116 
117  for(i=0; i<4; i++){
118  int s0= src[0*stride] + src[6*stride];
119  int s1= src[1*stride] + src[5*stride];
120  int s2= src[2*stride] + src[4*stride];
121  int s3= src[3*stride];
122  int s= s3+s3;
123  s3= s-s0;
124  s0= s+s0;
125  s = s2+s1;
126  s2= s2-s1;
127  dst[0]= s0 + s;
128  dst[2]= s0 - s;
129  dst[1]= 2*s3 + s2;
130  dst[3]= s3 - 2*s2;
131  src++;
132  dst+=4;
133  }
134 }
135 
136 static void dctB_c(int16_t *dst, int16_t *src){
137  int i;
138 
139  for(i=0; i<4; i++){
140  int s0= src[0*4] + src[6*4];
141  int s1= src[1*4] + src[5*4];
142  int s2= src[2*4] + src[4*4];
143  int s3= src[3*4];
144  int s= s3+s3;
145  s3= s-s0;
146  s0= s+s0;
147  s = s2+s1;
148  s2= s2-s1;
149  dst[0*4]= s0 + s;
150  dst[2*4]= s0 - s;
151  dst[1*4]= 2*s3 + s2;
152  dst[3*4]= s3 - 2*s2;
153  src++;
154  dst++;
155  }
156 }
157 
158 #if HAVE_MMX
159 static void dctB_mmx(int16_t *dst, int16_t *src){
160  __asm__ volatile (
161  "movq (%0), %%mm0 \n\t"
162  "movq 1*4*2(%0), %%mm1 \n\t"
163  "paddw 6*4*2(%0), %%mm0 \n\t"
164  "paddw 5*4*2(%0), %%mm1 \n\t"
165  "movq 2*4*2(%0), %%mm2 \n\t"
166  "movq 3*4*2(%0), %%mm3 \n\t"
167  "paddw 4*4*2(%0), %%mm2 \n\t"
168  "paddw %%mm3, %%mm3 \n\t" //s
169  "movq %%mm3, %%mm4 \n\t" //s
170  "psubw %%mm0, %%mm3 \n\t" //s-s0
171  "paddw %%mm0, %%mm4 \n\t" //s+s0
172  "movq %%mm2, %%mm0 \n\t" //s2
173  "psubw %%mm1, %%mm2 \n\t" //s2-s1
174  "paddw %%mm1, %%mm0 \n\t" //s2+s1
175  "movq %%mm4, %%mm1 \n\t" //s0'
176  "psubw %%mm0, %%mm4 \n\t" //s0'-s'
177  "paddw %%mm0, %%mm1 \n\t" //s0'+s'
178  "movq %%mm3, %%mm0 \n\t" //s3'
179  "psubw %%mm2, %%mm3 \n\t"
180  "psubw %%mm2, %%mm3 \n\t"
181  "paddw %%mm0, %%mm2 \n\t"
182  "paddw %%mm0, %%mm2 \n\t"
183  "movq %%mm1, (%1) \n\t"
184  "movq %%mm4, 2*4*2(%1) \n\t"
185  "movq %%mm2, 1*4*2(%1) \n\t"
186  "movq %%mm3, 3*4*2(%1) \n\t"
187  :: "r" (src), "r"(dst)
188  );
189 }
190 #endif
191 
192 static void (*dctB)(int16_t *dst, int16_t *src)= dctB_c;
193 
194 #define N0 4
195 #define N1 5
196 #define N2 10
197 #define SN0 2
198 #define SN1 2.2360679775
199 #define SN2 3.16227766017
200 #define N (1<<16)
201 
202 static const int factor[16]={
203  N/(N0*N0), N/(N0*N1), N/(N0*N0),N/(N0*N2),
204  N/(N1*N0), N/(N1*N1), N/(N1*N0),N/(N1*N2),
205  N/(N0*N0), N/(N0*N1), N/(N0*N0),N/(N0*N2),
206  N/(N2*N0), N/(N2*N1), N/(N2*N0),N/(N2*N2),
207 };
208 
209 static const int thres[16]={
210  N/(SN0*SN0), N/(SN0*SN2), N/(SN0*SN0),N/(SN0*SN2),
211  N/(SN2*SN0), N/(SN2*SN2), N/(SN2*SN0),N/(SN2*SN2),
212  N/(SN0*SN0), N/(SN0*SN2), N/(SN0*SN0),N/(SN0*SN2),
213  N/(SN2*SN0), N/(SN2*SN2), N/(SN2*SN0),N/(SN2*SN2),
214 };
215 
216 static int thres2[99][16];
217 
218 static void init_thres2(void){
219  int qp, i;
220  int bias= 0; //FIXME
221 
222  for(qp=0; qp<99; qp++){
223  for(i=0; i<16; i++){
224  thres2[qp][i]= ((i&1)?SN2:SN0) * ((i&4)?SN2:SN0) * XMAX(1,qp) * (1<<2) - 1 - bias;
225  }
226  }
227 }
228 
229 static int hardthresh_c(int16_t *src, int qp){
230  int i;
231  int a;
232 
233  a= src[0] * factor[0];
234  for(i=1; i<16; i++){
235  unsigned int threshold1= thres2[qp][i];
236  unsigned int threshold2= (threshold1<<1);
237  int level= src[i];
238  if(((unsigned)(level+threshold1))>threshold2){
239  a += level * factor[i];
240  }
241  }
242  return (a + (1<<11))>>12;
243 }
244 
245 static int mediumthresh_c(int16_t *src, int qp){
246  int i;
247  int a;
248 
249  a= src[0] * factor[0];
250  for(i=1; i<16; i++){
251  unsigned int threshold1= thres2[qp][i];
252  unsigned int threshold2= (threshold1<<1);
253  int level= src[i];
254  if(((unsigned)(level+threshold1))>threshold2){
255  if(((unsigned)(level+2*threshold1))>2*threshold2){
256  a += level * factor[i];
257  }else{
258  if(level>0) a+= 2*(level - (int)threshold1)*factor[i];
259  else a+= 2*(level + (int)threshold1)*factor[i];
260  }
261  }
262  }
263  return (a + (1<<11))>>12;
264 }
265 
266 static int softthresh_c(int16_t *src, int qp){
267  int i;
268  int a;
269 
270  a= src[0] * factor[0];
271  for(i=1; i<16; i++){
272  unsigned int threshold1= thres2[qp][i];
273  unsigned int threshold2= (threshold1<<1);
274  int level= src[i];
275  if(((unsigned)(level+threshold1))>threshold2){
276  if(level>0) a+= (level - (int)threshold1)*factor[i];
277  else a+= (level + (int)threshold1)*factor[i];
278  }
279  }
280  return (a + (1<<11))>>12;
281 }
282 
283 static int (*requantize)(int16_t *src, int qp)= hardthresh_c;
284 
285 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){
286  int x, y;
287  const int stride= is_luma ? p->temp_stride : ((width+16+15)&(~15));
288  uint8_t *p_src= p->src + 8*stride;
289  int16_t *block= (int16_t *)p->src;
290  int16_t *temp= (int16_t *)(p->src + 32);
291 
292  if (!src || !dst) return; // HACK avoid crash for Y8 colourspace
293  for(y=0; y<height; y++){
294  int index= 8 + 8*stride + y*stride;
295  fast_memcpy(p_src + index, src + y*src_stride, width);
296  for(x=0; x<8; x++){
297  p_src[index - x - 1]= p_src[index + x ];
298  p_src[index + width + x ]= p_src[index + width - x - 1];
299  }
300  }
301  for(y=0; y<8; y++){
302  fast_memcpy(p_src + ( 7-y)*stride, p_src + ( y+8)*stride, stride);
303  fast_memcpy(p_src + (height+8+y)*stride, p_src + (height-y+7)*stride, stride);
304  }
305  //FIXME (try edge emu)
306 
307  for(y=0; y<height; y++){
308  for(x=-8; x<0; x+=4){
309  const int index= x + y*stride + (8-3)*(1+stride) + 8; //FIXME silly offset
310  uint8_t *src = p_src + index;
311  int16_t *tp= temp+4*x;
312 
313  dctA_c(tp+4*8, src, stride);
314  }
315  for(x=0; x<width; ){
316  const int qps= 3 + is_luma;
317  int qp;
318  int end= XMIN(x+8, width);
319 
320  if(p->qp)
321  qp= p->qp;
322  else{
323  qp= qp_store[ (XMIN(x, width-1)>>qps) + (XMIN(y, height-1)>>qps) * qp_stride];
324  qp=norm_qscale(qp, p->mpeg2);
325  }
326  for(; x<end; x++){
327  const int index= x + y*stride + (8-3)*(1+stride) + 8; //FIXME silly offset
328  uint8_t *src = p_src + index;
329  int16_t *tp= temp+4*x;
330  int v;
331 
332  if((x&3)==0)
333  dctA_c(tp+4*8, src, stride);
334 
335  dctB(block, tp);
336 
337  v= requantize(block, qp);
338  v= (v + dither[y&7][x&7])>>6;
339  if((unsigned)v > 255)
340  v= (-v)>>31;
341  dst[x + y*dst_stride]= v;
342  }
343  }
344  }
345 }
346 
347 static int config(struct vf_instance *vf,
348  int width, int height, int d_width, int d_height,
349  unsigned int flags, unsigned int outfmt){
350  int h= (height+16+15)&(~15);
351 
352  vf->priv->temp_stride= (width+16+15)&(~15);
353  vf->priv->src = av_malloc(vf->priv->temp_stride*(h+8)*sizeof(uint8_t));
354 
355  return ff_vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
356 }
357 
358 static void get_image(struct vf_instance *vf, mp_image_t *mpi){
359  if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
360  // ok, we can do pp in-place (or pp disabled):
361  vf->dmpi=ff_vf_get_image(vf->next,mpi->imgfmt,
362  mpi->type, mpi->flags | MP_IMGFLAG_READABLE, mpi->width, mpi->height);
363  mpi->planes[0]=vf->dmpi->planes[0];
364  mpi->stride[0]=vf->dmpi->stride[0];
365  mpi->width=vf->dmpi->width;
366  if(mpi->flags&MP_IMGFLAG_PLANAR){
367  mpi->planes[1]=vf->dmpi->planes[1];
368  mpi->planes[2]=vf->dmpi->planes[2];
369  mpi->stride[1]=vf->dmpi->stride[1];
370  mpi->stride[2]=vf->dmpi->stride[2];
371  }
372  mpi->flags|=MP_IMGFLAG_DIRECT;
373 }
374 
375 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
376  mp_image_t *dmpi;
377 
378  if(mpi->flags&MP_IMGFLAG_DIRECT){
379  dmpi=vf->dmpi;
380  }else{
381  // no DR, so get a new image! hope we'll get DR buffer:
382  dmpi=ff_vf_get_image(vf->next,mpi->imgfmt,
383  MP_IMGTYPE_TEMP,
384  MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
385  mpi->width,mpi->height);
386  ff_vf_clone_mpi_attributes(dmpi, mpi);
387  }
388 
389  vf->priv->mpeg2= mpi->qscale_type;
390  if(mpi->qscale || vf->priv->qp){
391  filter(vf->priv, dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h, mpi->qscale, mpi->qstride, 1);
392  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);
393  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);
394  }else{
395  memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, dmpi->stride[0], mpi->stride[0]);
396  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]);
397  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]);
398  }
399 
400 #if HAVE_MMX
401  if(ff_gCpuCaps.hasMMX) __asm__ volatile ("emms\n\t");
402 #endif
403 #if HAVE_MMX2
404  if(ff_gCpuCaps.hasMMX2) __asm__ volatile ("sfence\n\t");
405 #endif
406 
407  return ff_vf_next_put_image(vf,dmpi, pts);
408 }
409 
410 static void uninit(struct vf_instance *vf){
411  if(!vf->priv) return;
412 
413  av_free(vf->priv->src);
414  vf->priv->src= NULL;
415 
416  free(vf->priv);
417  vf->priv=NULL;
418 }
419 
420 //===========================================================================//
421 static int query_format(struct vf_instance *vf, unsigned int fmt){
422  switch(fmt){
423  case IMGFMT_YVU9:
424  case IMGFMT_IF09:
425  case IMGFMT_YV12:
426  case IMGFMT_I420:
427  case IMGFMT_IYUV:
428  case IMGFMT_CLPL:
429  case IMGFMT_Y800:
430  case IMGFMT_Y8:
431  case IMGFMT_444P:
432  case IMGFMT_422P:
433  case IMGFMT_411P:
434  return ff_vf_next_query_format(vf,fmt);
435  }
436  return 0;
437 }
438 
439 static int control(struct vf_instance *vf, int request, void* data){
440  return ff_vf_next_control(vf,request,data);
441 }
442 
443 static int vf_open(vf_instance_t *vf, char *args){
444  vf->config=config;
445  vf->put_image=put_image;
446  vf->get_image=get_image;
447  vf->query_format=query_format;
448  vf->uninit=uninit;
449  vf->control= control;
450  vf->priv=malloc(sizeof(struct vf_priv_s));
451  memset(vf->priv, 0, sizeof(struct vf_priv_s));
452 
453  if (args) sscanf(args, "%d:%d", &vf->priv->qp, &vf->priv->mode);
454 
455  if(vf->priv->qp < 0)
456  vf->priv->qp = 0;
457 
458  init_thres2();
459 
460  switch(vf->priv->mode){
461  case 0: requantize= hardthresh_c; break;
462  case 1: requantize= softthresh_c; break;
463  default:
464  case 2: requantize= mediumthresh_c; break;
465  }
466 
467 #if HAVE_MMX
468  if(ff_gCpuCaps.hasMMX){
469  dctB= dctB_mmx;
470  }
471 #endif
472 #if 0
473  if(ff_gCpuCaps.hasMMX){
474  switch(vf->priv->mode){
475  case 0: requantize= hardthresh_mmx; break;
476  case 1: requantize= softthresh_mmx; break;
477  }
478  }
479 #endif
480 
481  return 1;
482 }
483 
484 const vf_info_t ff_vf_info_pp7 = {
485  "postprocess 7",
486  "pp7",
487  "Michael Niedermayer",
488  "",
489  vf_open,
490  NULL
491 };
Generated on Wed May 22 2013 19:21:01 for FFmpeg by   doxygen 1.8.2