libmpcodecs/vf.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "../config.h"
   6 #ifdef HAVE_MALLOC_H
   7 #include <malloc.h>
   8 #endif
   9
  10 #include "../mp_msg.h"
  11 #include "../help_mp.h"
  12 #include "../m_option.h"
  13 #include "../m_struct.h"
  14
  15
  16 #include "img_format.h"
  17 #include "mp_image.h"
  18 #include "vf.h"
  19
  20 #include "../libvo/fastmemcpy.h"
  21
  22 extern vf_info_t vf_info_vo;
  23 extern vf_info_t vf_info_rectangle;
  24 #ifndef HAVE_NO_POSIX_SELECT
  25 extern vf_info_t vf_info_bmovl;
  26 #endif
  27 extern vf_info_t vf_info_crop;
  28 extern vf_info_t vf_info_expand;
  29 #ifdef FF_POSTPROCESS
  30 extern vf_info_t vf_info_pp;
  31 #endif
  32 extern vf_info_t vf_info_scale;
  33 #ifdef USE_LIBFAME
  34 extern vf_info_t vf_info_fame;
  35 #endif
  36 extern vf_info_t vf_info_format;
  37 extern vf_info_t vf_info_noformat;
  38 extern vf_info_t vf_info_yuy2;
  39 extern vf_info_t vf_info_flip;
  40 extern vf_info_t vf_info_rgb2bgr;
  41 extern vf_info_t vf_info_rotate;
  42 extern vf_info_t vf_info_mirror;
  43 extern vf_info_t vf_info_palette;
  44 extern vf_info_t vf_info_lavc;
  45 extern vf_info_t vf_info_zrmjpeg;
  46 extern vf_info_t vf_info_dvbscale;
  47 extern vf_info_t vf_info_cropdetect;
  48 extern vf_info_t vf_info_test;
  49 extern vf_info_t vf_info_noise;
  50 extern vf_info_t vf_info_yvu9;
  51 extern vf_info_t vf_info_lavcdeint;
  52 extern vf_info_t vf_info_eq;
  53 extern vf_info_t vf_info_eq2;
  54 extern vf_info_t vf_info_halfpack;
  55 extern vf_info_t vf_info_dint;
  56 extern vf_info_t vf_info_1bpp;
  57 extern vf_info_t vf_info_2xsai;
  58 extern vf_info_t vf_info_unsharp;
  59 extern vf_info_t vf_info_swapuv;
  60 extern vf_info_t vf_info_il;
  61 extern vf_info_t vf_info_fil;
  62 extern vf_info_t vf_info_boxblur;
  63 extern vf_info_t vf_info_sab;
  64 extern vf_info_t vf_info_smartblur;
  65 extern vf_info_t vf_info_perspective;
  66 extern vf_info_t vf_info_down3dright;
  67 extern vf_info_t vf_info_field;
  68 extern vf_info_t vf_info_denoise3d;
  69 extern vf_info_t vf_info_hqdn3d;
  70 extern vf_info_t vf_info_detc;
  71 extern vf_info_t vf_info_telecine;
  72 extern vf_info_t vf_info_tinterlace;
  73 extern vf_info_t vf_info_tfields;
  74 extern vf_info_t vf_info_ivtc;
  75 extern vf_info_t vf_info_ilpack;
  76 extern vf_info_t vf_info_dsize;
  77 extern vf_info_t vf_info_decimate;
  78 extern vf_info_t vf_info_softpulldown;
  79 extern vf_info_t vf_info_pullup;
  80 extern vf_info_t vf_info_filmdint;
  81 extern vf_info_t vf_info_framestep;
  82 extern vf_info_t vf_info_tile;
  83 extern vf_info_t vf_info_delogo;
  84 extern vf_info_t vf_info_hue;
  85 extern vf_info_t vf_info_spp;
  86 extern vf_info_t vf_info_yuvcsp;
  87 extern vf_info_t vf_info_kerndeint;
  88 extern vf_info_t vf_info_rgbtest;
  89 extern vf_info_t vf_info_qp;
  90 extern vf_info_t vf_info_phase;
  91 extern vf_info_t vf_info_divtc;
  92 extern vf_info_t vf_info_harddup;
  93 extern vf_info_t vf_info_softskip;
  94
  95 // list of available filters:
  96 static vf_info_t* filter_list[]={
  97     &vf_info_rectangle,
  98 #ifndef HAVE_NO_POSIX_SELECT
  99     &vf_info_bmovl,
 100 #endif
 101     &vf_info_crop,
 102     &vf_info_expand,
 103 #ifdef FF_POSTPROCESS
 104     &vf_info_pp,
 105 #endif
 106     &vf_info_scale,
 107 //    &vf_info_osd,
 108     &vf_info_vo,
 109 #ifdef USE_LIBFAME
 110     &vf_info_fame,
 111 #endif
 112     &vf_info_format,
 113     &vf_info_noformat,
 114     &vf_info_yuy2,
 115     &vf_info_flip,
 116     &vf_info_rgb2bgr,
 117     &vf_info_rotate,
 118     &vf_info_mirror,
 119     &vf_info_palette,
 120 #ifdef USE_LIBAVCODEC
 121     &vf_info_lavc,
 122     &vf_info_lavcdeint,
 123 #endif
 124 #ifdef HAVE_ZR
 125     &vf_info_zrmjpeg,
 126 #endif
 127     &vf_info_dvbscale,
 128     &vf_info_cropdetect,
 129     &vf_info_test,
 130     &vf_info_noise,
 131     &vf_info_yvu9,
 132     &vf_info_eq,
 133     &vf_info_eq2,
 134     &vf_info_halfpack,
 135     &vf_info_dint,
 136     &vf_info_1bpp,
 137     &vf_info_2xsai,
 138     &vf_info_unsharp,
 139     &vf_info_swapuv,
 140     &vf_info_il,
 141     &vf_info_fil,
 142     &vf_info_boxblur,
 143     &vf_info_sab,
 144     &vf_info_smartblur,
 145     &vf_info_perspective,
 146     &vf_info_down3dright,
 147     &vf_info_field,
 148     &vf_info_denoise3d,
 149     &vf_info_hqdn3d,
 150     &vf_info_detc,
 151     &vf_info_telecine,
 152     &vf_info_tinterlace,
 153     &vf_info_tfields,
 154     &vf_info_ivtc,
 155     &vf_info_ilpack,
 156     &vf_info_dsize,
 157     &vf_info_decimate,
 158     &vf_info_softpulldown,
 159     &vf_info_pullup,
 160     &vf_info_filmdint,
 161     &vf_info_framestep,
 162     &vf_info_tile,
 163     &vf_info_delogo,
 164     &vf_info_hue,
 165 #ifdef USE_LIBAVCODEC
 166     &vf_info_spp,
 167 #endif
 168     &vf_info_yuvcsp,
 169     &vf_info_kerndeint,
 170     &vf_info_rgbtest,
 171 #ifdef USE_LIBAVCODEC
 172     &vf_info_qp,
 173 #endif
 174     &vf_info_phase,
 175     &vf_info_divtc,
 176     &vf_info_harddup,
 177     &vf_info_softskip,
 178     NULL
 179 };
 180
 181 // For the vf option
 182 m_obj_settings_t* vf_settings = NULL;
 183 // For the vop option
 184 m_obj_settings_t* vo_plugin_args = NULL;
 185 m_obj_list_t vf_obj_list = {
 186   (void**)filter_list,
 187   M_ST_OFF(vf_info_t,name),
 188   M_ST_OFF(vf_info_t,info),
 189   M_ST_OFF(vf_info_t,opts)
 190 };
 191
 192 //============================================================================
 193 // mpi stuff:
 194
 195 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 196     int y;
 197     if(mpi->flags&MP_IMGFLAG_PLANAR){
 198         y0&=~1;h+=h&1;
 199         if(x0==0 && w==mpi->width){
 200             // full width clear:
 201             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 202             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 203             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 204         } else
 205         for(y=y0;y<y0+h;y+=2){
 206             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 207             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 208             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 209             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 210         }
 211         return;
 212     }
 213     // packed:
 214     for(y=y0;y<y0+h;y++){
 215         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 216         if(mpi->flags&MP_IMGFLAG_YUV){
 217             unsigned int* p=(unsigned int*) dst;
 218             int size=(mpi->bpp>>3)*w/4;
 219             int i;
 220 #ifdef WORDS_BIGENDIAN
 221 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 222 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 223 #else
 224 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 225 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 226 #endif
 227             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 228                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 229                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 230             } else {
 231                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 232                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 233             }
 234         } else
 235             memset(dst,0,(mpi->bpp>>3)*w);
 236     }
 237 }
 238
 239 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 240   mp_image_t* mpi=NULL;
 241   int w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 242
 243   if(vf->put_image==vf_next_put_image){
 244       // passthru mode, if the plugin uses the fallback/default put_image() code
 245       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 246   }
 247
 248   // Note: we should call libvo first to check if it supports direct rendering
 249   // and if not, then fallback to software buffers:
 250   switch(mp_imgtype){
 251   case MP_IMGTYPE_EXPORT:
 252     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 253     mpi=vf->imgctx.export_images[0];
 254     break;
 255   case MP_IMGTYPE_STATIC:
 256     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 257     mpi=vf->imgctx.static_images[0];
 258     break;
 259   case MP_IMGTYPE_TEMP:
 260     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 261     mpi=vf->imgctx.temp_images[0];
 262     break;
 263   case MP_IMGTYPE_IPB:
 264     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 265       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 266       mpi=vf->imgctx.temp_images[0];
 267       break;
 268     }
 269   case MP_IMGTYPE_IP:
 270     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 271     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 272     vf->imgctx.static_idx^=1;
 273     break;
 274   }
 275   if(mpi){
 276     mpi->type=mp_imgtype;
 277     mpi->w=w; mpi->h=h;
 278     // keep buffer allocation status & color flags only:
 279 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 280     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 281     // accept restrictions & draw_slice flags only:
 282     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK);
 283     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 284     if(mpi->width!=w2 || mpi->height!=h){
 285 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 286         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 287             if(mpi->width<w2 || mpi->height<h){
 288                 // need to re-allocate buffer memory:
 289                 free(mpi->planes[0]);
 290                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 291                 printf("vf.c: have to REALLOCATE buffer memory :(\n");
 292             }
 293 //      } else {
 294         } {
 295             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 296             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 297         }
 298     }
 299     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 300     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 301
 302         // check libvo first!
 303         if(vf->get_image) vf->get_image(vf,mpi);
 304
 305         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 306           // non-direct and not yet allocated image. allocate it!
 307
 308           // check if codec prefer aligned stride:
 309           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 310               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 311                          mpi->flags&MP_IMGFLAG_YUV) ?
 312                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 313               w2=((w+align)&(~align));
 314               if(mpi->width!=w2){
 315                   // we have to change width... check if we CAN co it:
 316                   int flags=vf->query_format(vf,outfmt); // should not fail
 317                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 318 //                printf("query -> 0x%X    \n",flags);
 319                   if(flags&VFCAP_ACCEPT_STRIDE){
 320                       mpi->width=w2;
 321                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 322                   }
 323               }
 324           }
 325
 326           // IF09 - allocate space for 4. plane delta info - unused
 327           if (mpi->imgfmt == IMGFMT_IF09)
 328           {
 329              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8+
 330                                         mpi->chroma_width*mpi->chroma_height);
 331              /* export delta table */
 332              mpi->planes[3]=mpi->planes[0]+(mpi->width*mpi->height)+2*(mpi->chroma_width*mpi->chroma_height);
 333           }
 334           else
 335              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8);
 336           if(mpi->flags&MP_IMGFLAG_PLANAR){
 337               // YV12/I420/YVU9/IF09. feel free to add other planar formats here...
 338               //if(!mpi->stride[0])
 339               mpi->stride[0]=mpi->width;
 340               //if(!mpi->stride[1])
 341               mpi->stride[1]=mpi->stride[2]=mpi->chroma_width;
 342               if(mpi->flags&MP_IMGFLAG_SWAPPED){
 343                   // I420/IYUV  (Y,U,V)
 344                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 345                   mpi->planes[2]=mpi->planes[1]+mpi->chroma_width*mpi->chroma_height;
 346               } else {
 347                   // YV12,YVU9,IF09  (Y,V,U)
 348                   mpi->planes[2]=mpi->planes[0]+mpi->width*mpi->height;
 349                   mpi->planes[1]=mpi->planes[2]+mpi->chroma_width*mpi->chroma_height;
 350               }
 351           } else {
 352               //if(!mpi->stride[0])
 353               mpi->stride[0]=mpi->width*mpi->bpp/8;
 354           }
 355 //        printf("clearing img!\n");
 356           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 357           mpi->flags|=MP_IMGFLAG_ALLOCATED;
 358         }
 359     }
 360     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 361         if(vf->start_slice) vf->start_slice(vf,mpi);
 362     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 363             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 364                   vf->info->name,
 365                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 366                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 367                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 368                   mpi->width,mpi->height,mpi->bpp,
 369                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 370                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 371                   mpi->bpp*mpi->width*mpi->height/8);
 372             mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"(imgfmt: %x, planes: %x,%x,%x strides: %d,%d,%d, chroma: %dx%d, shift: h:%d,v:%d)\n",
 373                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 374                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 375                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 376             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 377     }
 378
 379   }
 380 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 381 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 382 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 383   return mpi;
 384 }
 385
 386 //============================================================================
 387
 388 // By default vf doesn't accept MPEGPES
 389 static int vf_default_query_format(struct vf_instance_s* vf, unsigned int fmt){
 390   if(fmt == IMGFMT_MPEGPES) return 0;
 391   return vf_next_query_format(vf,fmt);
 392 }
 393
 394 vf_instance_t* vf_open_plugin(vf_info_t** filter_list, vf_instance_t* next, char *name, char **args){
 395     vf_instance_t* vf;
 396     int i;
 397     for(i=0;;i++){
 398         if(!filter_list[i]){
 399             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotFindVideoFilter,name);
 400             return NULL; // no such filter!
 401         }
 402         if(!strcmp(filter_list[i]->name,name)) break;
 403     }
 404     vf=malloc(sizeof(vf_instance_t));
 405     memset(vf,0,sizeof(vf_instance_t));
 406     vf->info=filter_list[i];
 407     vf->next=next;
 408     vf->config=vf_next_config;
 409     vf->control=vf_next_control;
 410     vf->query_format=vf_default_query_format;
 411     vf->put_image=vf_next_put_image;
 412     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 413     vf->default_reqs=0;
 414     if(vf->info->opts) { // vf_vo get some special argument
 415       m_struct_t* st = vf->info->opts;
 416       void* vf_priv = m_struct_alloc(st);
 417       int n;
 418       for(n = 0 ; args && args[2*n] ; n++)
 419         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 420       vf->priv = vf_priv;
 421       args = NULL;
 422     } else // Otherwise we should have the '_oldargs_'
 423       if(args && !strcmp(args[0],"_oldargs_"))
 424         args = (char**)args[1];
 425       else
 426         args = NULL;
 427     if(vf->info->open(vf,(char*)args)>0) return vf; // Success!
 428     free(vf);
 429     mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotOpenVideoFilter,name);
 430     return NULL;
 431 }
 432
 433 vf_instance_t* vf_open_filter(vf_instance_t* next, char *name, char **args){
 434   if(args && strcmp(args[0],"_oldargs_")) {
 435     int i,l = 0;
 436     for(i = 0 ; args && args[2*i] ; i++)
 437       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 438     l += strlen(name);
 439     {
 440       char str[l+1];
 441       char* p = str;
 442       p += sprintf(str,"%s",name);
 443       for(i = 0 ; args && args[2*i] ; i++)
 444         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 445       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter "[%s]\n",str);
 446     }
 447   } else if(strcmp(name,"vo")) {
 448     if(args && strcmp(args[0],"_oldargs_") == 0)
 449       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 450              "[%s=%s]\n", name,args[1]);
 451     else
 452       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 453              "[%s]\n", name);
 454   }
 455   return vf_open_plugin(filter_list,next,name,args);
 456 }
 457
 458 //============================================================================
 459
 460 unsigned int vf_match_csp(vf_instance_t** vfp,unsigned int* list,unsigned int preferred){
 461     vf_instance_t* vf=*vfp;
 462     unsigned int* p;
 463     unsigned int best=0;
 464     int ret;
 465     if((p=list)) while(*p){
 466         ret=vf->query_format(vf,*p);
 467         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 468         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 469         if(ret&1 && !best) best=*p; // best with conversion
 470         ++p;
 471     }
 472     if(best) return best; // bingo, they have common csp!
 473     // ok, then try with scale:
 474     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 475     vf=vf_open_filter(vf,"scale",NULL);
 476     if(!vf) return 0; // failed to init "scale"
 477     // try the preferred csp first:
 478     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 479     // try the list again, now with "scaler" :
 480     if((p=list)) while(*p){
 481         ret=vf->query_format(vf,*p);
 482         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 483         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 484         if(ret&1 && !best) best=*p; // best with conversion
 485         ++p;
 486     }
 487     if(best) *vfp=vf; // else uninit vf  !FIXME!
 488     return best;
 489 }
 490
 491 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 492     dst->pict_type= src->pict_type;
 493     dst->fields = src->fields;
 494     dst->qscale_type= src->qscale_type;
 495     if(dst->width == src->width && dst->height == src->height){
 496         dst->qstride= src->qstride;
 497         dst->qscale= src->qscale;
 498     }
 499 }
 500
 501 int vf_next_config(struct vf_instance_s* vf,
 502         int width, int height, int d_width, int d_height,
 503         unsigned int voflags, unsigned int outfmt){
 504     int miss;
 505     int flags=vf->next->query_format(vf->next,outfmt);
 506     if(!flags){
 507         // hmm. colorspace mismatch!!!
 508         // let's insert the 'scale' filter, it does the job for us:
 509         vf_instance_t* vf2;
 510         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 511         vf2=vf_open_filter(vf->next,"scale",NULL);
 512         if(!vf2) return 0; // shouldn't happen!
 513         vf->next=vf2;
 514         flags=vf->next->query_format(vf->next,outfmt);
 515         if(!flags){
 516             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CannotFindColorspace);
 517             return 0; // FAIL
 518         }
 519     }
 520     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 521     miss=vf->default_reqs - (flags&vf->default_reqs);
 522     if(miss&VFCAP_ACCEPT_STRIDE){
 523         // vf requires stride support but vf->next doesn't support it!
 524         // let's insert the 'expand' filter, it does the job for us:
 525         vf_instance_t* vf2=vf_open_filter(vf->next,"expand",NULL);
 526         if(!vf2) return 0; // shouldn't happen!
 527         vf->next=vf2;
 528     }
 529     return vf->next->config(vf->next,width,height,d_width,d_height,voflags,outfmt);
 530 }
 531
 532 int vf_next_control(struct vf_instance_s* vf, int request, void* data){
 533     return vf->next->control(vf->next,request,data);
 534 }
 535
 536 int vf_next_query_format(struct vf_instance_s* vf, unsigned int fmt){
 537     int flags=vf->next->query_format(vf->next,fmt);
 538     if(flags) flags|=vf->default_caps;
 539     return flags;
 540 }
 541
 542 int vf_next_put_image(struct vf_instance_s* vf,mp_image_t *mpi){
 543     return vf->next->put_image(vf->next,mpi);
 544 }
 545
 546 void vf_next_draw_slice(struct vf_instance_s* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 547     if (vf->next->draw_slice) {
 548         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 549         return;
 550     }
 551     if (!vf->dmpi) {
 552         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 553         return;
 554     }
 555     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 556         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 557             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 558         return;
 559     }
 560     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 561         w, h, vf->dmpi->stride[0], stride[0]);
 562     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 563         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 564     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 565         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 566 }
 567
 568 //============================================================================
 569
 570 vf_instance_t* append_filters(vf_instance_t* last){
 571   vf_instance_t* vf;
 572   int i;
 573
 574   // -vf take precedence over -vop
 575   if(vf_settings) {
 576     // We want to add them in the 'right order'
 577     for(i = 0 ; vf_settings[i].name ; i++)
 578       /* NOP */;
 579     for(i-- ; i >= 0 ; i--) {
 580       //printf("Open filter %s\n",vf_settings[i].name);
 581       vf = vf_open_filter(last,vf_settings[i].name,vf_settings[i].attribs);
 582       if(vf) last=vf;
 583     }
 584   } else if(vo_plugin_args) {
 585     for(i = 0 ; vo_plugin_args[i].name ; i++) {
 586       vf = vf_open_filter(last,vo_plugin_args[i].name,
 587                           vo_plugin_args[i].attribs);
 588       if(vf) last=vf;
 589     }
 590   }
 591   return last;
 592 }
 593
 594 //============================================================================
 595
 596 void vf_uninit_filter(vf_instance_t* vf){
 597     if(vf->uninit) vf->uninit(vf);
 598     free_mp_image(vf->imgctx.static_images[0]);
 599     free_mp_image(vf->imgctx.static_images[1]);
 600     free_mp_image(vf->imgctx.temp_images[0]);
 601     free_mp_image(vf->imgctx.export_images[0]);
 602     free(vf);
 603 }
 604
 605 void vf_uninit_filter_chain(vf_instance_t* vf){
 606     while(vf){
 607         vf_instance_t* next=vf->next;
 608         vf_uninit_filter(vf);
 609         vf=next;
 610     }
 611 }
 612
 613 void vf_list_plugins(){
 614     int i=0;
 615     while(filter_list[i]){
 616         mp_msg(MSGT_VFILTER,MSGL_INFO,"\t%-10s: %s\n",filter_list[i]->name,filter_list[i]->info);
 617         i++;
 618     }
 619 }