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 #ifdef MP_DEBUG
  11 #include <assert.h>
  12 #endif
  13
  14 #include "mp_msg.h"
  15 #include "help_mp.h"
  16 #include "m_option.h"
  17 #include "m_struct.h"
  18
  19
  20 #include "img_format.h"
  21 #include "mp_image.h"
  22 #include "vf.h"
  23
  24 #include "libvo/fastmemcpy.h"
  25
  26 extern vf_info_t vf_info_vo;
  27 extern vf_info_t vf_info_rectangle;
  28 #ifndef HAVE_NO_POSIX_SELECT
  29 extern vf_info_t vf_info_bmovl;
  30 #endif
  31 extern vf_info_t vf_info_crop;
  32 extern vf_info_t vf_info_expand;
  33 #if defined(USE_LIBPOSTPROC) || defined(USE_LIBPOSTPROC_SO)
  34 extern vf_info_t vf_info_pp;
  35 #endif
  36 extern vf_info_t vf_info_scale;
  37 #ifdef USE_LIBFAME
  38 extern vf_info_t vf_info_fame;
  39 #endif
  40 extern vf_info_t vf_info_format;
  41 extern vf_info_t vf_info_noformat;
  42 extern vf_info_t vf_info_yuy2;
  43 extern vf_info_t vf_info_flip;
  44 extern vf_info_t vf_info_rgb2bgr;
  45 extern vf_info_t vf_info_rotate;
  46 extern vf_info_t vf_info_mirror;
  47 extern vf_info_t vf_info_palette;
  48 extern vf_info_t vf_info_lavc;
  49 extern vf_info_t vf_info_zrmjpeg;
  50 extern vf_info_t vf_info_dvbscale;
  51 extern vf_info_t vf_info_cropdetect;
  52 extern vf_info_t vf_info_test;
  53 extern vf_info_t vf_info_noise;
  54 extern vf_info_t vf_info_yvu9;
  55 extern vf_info_t vf_info_lavcdeint;
  56 extern vf_info_t vf_info_eq;
  57 extern vf_info_t vf_info_eq2;
  58 extern vf_info_t vf_info_halfpack;
  59 extern vf_info_t vf_info_dint;
  60 extern vf_info_t vf_info_1bpp;
  61 extern vf_info_t vf_info_2xsai;
  62 extern vf_info_t vf_info_unsharp;
  63 extern vf_info_t vf_info_swapuv;
  64 extern vf_info_t vf_info_il;
  65 extern vf_info_t vf_info_fil;
  66 extern vf_info_t vf_info_boxblur;
  67 extern vf_info_t vf_info_sab;
  68 extern vf_info_t vf_info_smartblur;
  69 extern vf_info_t vf_info_perspective;
  70 extern vf_info_t vf_info_down3dright;
  71 extern vf_info_t vf_info_field;
  72 extern vf_info_t vf_info_denoise3d;
  73 extern vf_info_t vf_info_hqdn3d;
  74 extern vf_info_t vf_info_detc;
  75 extern vf_info_t vf_info_telecine;
  76 extern vf_info_t vf_info_tinterlace;
  77 extern vf_info_t vf_info_tfields;
  78 extern vf_info_t vf_info_ivtc;
  79 extern vf_info_t vf_info_ilpack;
  80 extern vf_info_t vf_info_dsize;
  81 extern vf_info_t vf_info_decimate;
  82 extern vf_info_t vf_info_softpulldown;
  83 extern vf_info_t vf_info_pullup;
  84 extern vf_info_t vf_info_filmdint;
  85 extern vf_info_t vf_info_framestep;
  86 extern vf_info_t vf_info_tile;
  87 extern vf_info_t vf_info_delogo;
  88 extern vf_info_t vf_info_remove_logo;
  89 extern vf_info_t vf_info_hue;
  90 extern vf_info_t vf_info_spp;
  91 extern vf_info_t vf_info_uspp;
  92 extern vf_info_t vf_info_fspp;
  93 extern vf_info_t vf_info_pp7;
  94 extern vf_info_t vf_info_yuvcsp;
  95 extern vf_info_t vf_info_kerndeint;
  96 extern vf_info_t vf_info_rgbtest;
  97 extern vf_info_t vf_info_qp;
  98 extern vf_info_t vf_info_phase;
  99 extern vf_info_t vf_info_divtc;
 100 extern vf_info_t vf_info_harddup;
 101 extern vf_info_t vf_info_softskip;
 102 extern vf_info_t vf_info_screenshot;
 103
 104 // list of available filters:
 105 static vf_info_t* filter_list[]={
 106     &vf_info_rectangle,
 107 #ifndef HAVE_NO_POSIX_SELECT
 108     &vf_info_bmovl,
 109 #endif
 110     &vf_info_crop,
 111     &vf_info_expand,
 112 #if defined(USE_LIBPOSTPROC) || defined(USE_LIBPOSTPROC_SO)
 113     &vf_info_pp,
 114 #endif
 115     &vf_info_scale,
 116 //    &vf_info_osd,
 117     &vf_info_vo,
 118 #ifdef USE_LIBFAME
 119     &vf_info_fame,
 120 #endif
 121     &vf_info_format,
 122     &vf_info_noformat,
 123     &vf_info_yuy2,
 124     &vf_info_flip,
 125     &vf_info_rgb2bgr,
 126     &vf_info_rotate,
 127     &vf_info_mirror,
 128     &vf_info_palette,
 129 #ifdef USE_LIBAVCODEC
 130     &vf_info_lavc,
 131     &vf_info_lavcdeint,
 132 #endif
 133 #ifdef HAVE_ZR
 134     &vf_info_zrmjpeg,
 135 #endif
 136     &vf_info_dvbscale,
 137     &vf_info_cropdetect,
 138     &vf_info_test,
 139     &vf_info_noise,
 140     &vf_info_yvu9,
 141     &vf_info_eq,
 142     &vf_info_eq2,
 143     &vf_info_halfpack,
 144     &vf_info_dint,
 145     &vf_info_1bpp,
 146     &vf_info_2xsai,
 147     &vf_info_unsharp,
 148     &vf_info_swapuv,
 149     &vf_info_il,
 150     &vf_info_fil,
 151     &vf_info_boxblur,
 152     &vf_info_sab,
 153     &vf_info_smartblur,
 154     &vf_info_perspective,
 155     &vf_info_down3dright,
 156     &vf_info_field,
 157     &vf_info_denoise3d,
 158     &vf_info_hqdn3d,
 159     &vf_info_detc,
 160     &vf_info_telecine,
 161     &vf_info_tinterlace,
 162     &vf_info_tfields,
 163     &vf_info_ivtc,
 164     &vf_info_ilpack,
 165     &vf_info_dsize,
 166     &vf_info_decimate,
 167     &vf_info_softpulldown,
 168     &vf_info_pullup,
 169     &vf_info_filmdint,
 170     &vf_info_framestep,
 171     &vf_info_tile,
 172     &vf_info_delogo,
 173     &vf_info_remove_logo,
 174     &vf_info_hue,
 175 #ifdef USE_LIBAVCODEC_DSPUTIL
 176     &vf_info_spp,
 177     &vf_info_uspp,
 178     &vf_info_fspp,
 179     &vf_info_qp,
 180 #endif
 181     &vf_info_yuvcsp,
 182     &vf_info_kerndeint,
 183     &vf_info_rgbtest,
 184 #ifdef USE_LIBAVCODEC
 185     &vf_info_pp7,
 186 #endif
 187     &vf_info_phase,
 188     &vf_info_divtc,
 189     &vf_info_harddup,
 190     &vf_info_softskip,
 191 #ifdef HAVE_PNG
 192     &vf_info_screenshot,
 193 #endif
 194     NULL
 195 };
 196
 197 // For the vf option
 198 m_obj_settings_t* vf_settings = NULL;
 199 // For the vop option
 200 m_obj_settings_t* vo_plugin_args = NULL;
 201 m_obj_list_t vf_obj_list = {
 202   (void**)filter_list,
 203   M_ST_OFF(vf_info_t,name),
 204   M_ST_OFF(vf_info_t,info),
 205   M_ST_OFF(vf_info_t,opts)
 206 };
 207
 208 //============================================================================
 209 // mpi stuff:
 210
 211 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 212     int y;
 213     if(mpi->flags&MP_IMGFLAG_PLANAR){
 214         y0&=~1;h+=h&1;
 215         if(x0==0 && w==mpi->width){
 216             // full width clear:
 217             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 218             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 219             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 220         } else
 221         for(y=y0;y<y0+h;y+=2){
 222             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 223             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 224             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 225             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 226         }
 227         return;
 228     }
 229     // packed:
 230     for(y=y0;y<y0+h;y++){
 231         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 232         if(mpi->flags&MP_IMGFLAG_YUV){
 233             unsigned int* p=(unsigned int*) dst;
 234             int size=(mpi->bpp>>3)*w/4;
 235             int i;
 236 #ifdef WORDS_BIGENDIAN
 237 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 238 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 239 #else
 240 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 241 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 242 #endif
 243             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 244                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 245                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 246             } else {
 247                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 248                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 249             }
 250         } else
 251             memset(dst,0,(mpi->bpp>>3)*w);
 252     }
 253 }
 254
 255 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 256   mp_image_t* mpi=NULL;
 257   int w2;
 258
 259 #ifdef MP_DEBUG
 260   assert(w == -1 || w >= vf->w);
 261   assert(h == -1 || h >= vf->h);
 262   assert(vf->w > 0);
 263   assert(vf->h > 0);
 264 #endif
 265
 266 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 267
 268   if (w == -1) w = vf->w;
 269   if (h == -1) h = vf->h;
 270
 271   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 272
 273   if(vf->put_image==vf_next_put_image){
 274       // passthru mode, if the plugin uses the fallback/default put_image() code
 275       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 276   }
 277
 278   // Note: we should call libvo first to check if it supports direct rendering
 279   // and if not, then fallback to software buffers:
 280   switch(mp_imgtype){
 281   case MP_IMGTYPE_EXPORT:
 282     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 283     mpi=vf->imgctx.export_images[0];
 284     break;
 285   case MP_IMGTYPE_STATIC:
 286     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 287     mpi=vf->imgctx.static_images[0];
 288     break;
 289   case MP_IMGTYPE_TEMP:
 290     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 291     mpi=vf->imgctx.temp_images[0];
 292     break;
 293   case MP_IMGTYPE_IPB:
 294     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 295       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 296       mpi=vf->imgctx.temp_images[0];
 297       break;
 298     }
 299   case MP_IMGTYPE_IP:
 300     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 301     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 302     vf->imgctx.static_idx^=1;
 303     break;
 304   }
 305   if(mpi){
 306     mpi->type=mp_imgtype;
 307     mpi->w=vf->w; mpi->h=vf->h;
 308     // keep buffer allocation status & color flags only:
 309 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 310     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 311     // accept restrictions & draw_slice flags only:
 312     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK);
 313     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 314     if(mpi->width!=w2 || mpi->height!=h){
 315 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 316         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 317             if(mpi->width<w2 || mpi->height<h){
 318                 // need to re-allocate buffer memory:
 319                 free(mpi->planes[0]);
 320                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 321                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 322             }
 323 //      } else {
 324         } {
 325             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 326             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 327         }
 328     }
 329     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 330     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 331
 332         // check libvo first!
 333         if(vf->get_image) vf->get_image(vf,mpi);
 334
 335         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 336           // non-direct and not yet allocated image. allocate it!
 337
 338           // check if codec prefer aligned stride:
 339           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 340               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 341                          mpi->flags&MP_IMGFLAG_YUV) ?
 342                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 343               w2=((w+align)&(~align));
 344               if(mpi->width!=w2){
 345                   // we have to change width... check if we CAN co it:
 346                   int flags=vf->query_format(vf,outfmt); // should not fail
 347                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 348 //                printf("query -> 0x%X    \n",flags);
 349                   if(flags&VFCAP_ACCEPT_STRIDE){
 350                       mpi->width=w2;
 351                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 352                   }
 353               }
 354           }
 355
 356           // IF09 - allocate space for 4. plane delta info - unused
 357           if (mpi->imgfmt == IMGFMT_IF09)
 358           {
 359              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8+
 360                                         mpi->chroma_width*mpi->chroma_height);
 361              /* export delta table */
 362              mpi->planes[3]=mpi->planes[0]+(mpi->width*mpi->height)+2*(mpi->chroma_width*mpi->chroma_height);
 363           }
 364           else
 365              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8);
 366           if(mpi->flags&MP_IMGFLAG_PLANAR){
 367               // YV12/I420/YVU9/IF09. feel free to add other planar formats here...
 368               //if(!mpi->stride[0])
 369               mpi->stride[0]=mpi->width;
 370               //if(!mpi->stride[1])
 371               if(mpi->num_planes > 2){
 372               mpi->stride[1]=mpi->stride[2]=mpi->chroma_width;
 373               if(mpi->flags&MP_IMGFLAG_SWAPPED){
 374                   // I420/IYUV  (Y,U,V)
 375                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 376                   mpi->planes[2]=mpi->planes[1]+mpi->chroma_width*mpi->chroma_height;
 377               } else {
 378                   // YV12,YVU9,IF09  (Y,V,U)
 379                   mpi->planes[2]=mpi->planes[0]+mpi->width*mpi->height;
 380                   mpi->planes[1]=mpi->planes[2]+mpi->chroma_width*mpi->chroma_height;
 381               }
 382               } else {
 383                   // NV12/NV21
 384                   mpi->stride[1]=mpi->chroma_width;
 385                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 386               }
 387           } else {
 388               //if(!mpi->stride[0])
 389               mpi->stride[0]=mpi->width*mpi->bpp/8;
 390           }
 391 //        printf("clearing img!\n");
 392           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 393           mpi->flags|=MP_IMGFLAG_ALLOCATED;
 394         }
 395     }
 396     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 397         if(vf->start_slice) vf->start_slice(vf,mpi);
 398     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 399             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 400                   vf->info->name,
 401                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 402                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 403                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 404                   mpi->width,mpi->height,mpi->bpp,
 405                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 406                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 407                   mpi->bpp*mpi->width*mpi->height/8);
 408             mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"(imgfmt: %x, planes: %p,%p,%p strides: %d,%d,%d, chroma: %dx%d, shift: h:%d,v:%d)\n",
 409                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 410                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 411                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 412             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 413     }
 414
 415   mpi->qscale = NULL;
 416   }
 417 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 418 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 419 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 420   return mpi;
 421 }
 422
 423 //============================================================================
 424
 425 // By default vf doesn't accept MPEGPES
 426 static int vf_default_query_format(struct vf_instance_s* vf, unsigned int fmt){
 427   if(fmt == IMGFMT_MPEGPES) return 0;
 428   return vf_next_query_format(vf,fmt);
 429 }
 430
 431 vf_instance_t* vf_open_plugin(vf_info_t** filter_list, vf_instance_t* next, char *name, char **args){
 432     vf_instance_t* vf;
 433     int i;
 434     for(i=0;;i++){
 435         if(!filter_list[i]){
 436             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotFindVideoFilter,name);
 437             return NULL; // no such filter!
 438         }
 439         if(!strcmp(filter_list[i]->name,name)) break;
 440     }
 441     vf=malloc(sizeof(vf_instance_t));
 442     memset(vf,0,sizeof(vf_instance_t));
 443     vf->info=filter_list[i];
 444     vf->next=next;
 445     vf->config=vf_next_config;
 446     vf->control=vf_next_control;
 447     vf->query_format=vf_default_query_format;
 448     vf->put_image=vf_next_put_image;
 449     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 450     vf->default_reqs=0;
 451     if(vf->info->opts) { // vf_vo get some special argument
 452       m_struct_t* st = vf->info->opts;
 453       void* vf_priv = m_struct_alloc(st);
 454       int n;
 455       for(n = 0 ; args && args[2*n] ; n++)
 456         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 457       vf->priv = vf_priv;
 458       args = NULL;
 459     } else // Otherwise we should have the '_oldargs_'
 460       if(args && !strcmp(args[0],"_oldargs_"))
 461         args = (char**)args[1];
 462       else
 463         args = NULL;
 464     if(vf->info->open(vf,(char*)args)>0) return vf; // Success!
 465     free(vf);
 466     mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotOpenVideoFilter,name);
 467     return NULL;
 468 }
 469
 470 vf_instance_t* vf_open_filter(vf_instance_t* next, char *name, char **args){
 471   if(args && strcmp(args[0],"_oldargs_")) {
 472     int i,l = 0;
 473     for(i = 0 ; args && args[2*i] ; i++)
 474       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 475     l += strlen(name);
 476     {
 477       char str[l+1];
 478       char* p = str;
 479       p += sprintf(str,"%s",name);
 480       for(i = 0 ; args && args[2*i] ; i++)
 481         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 482       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter "[%s]\n",str);
 483     }
 484   } else if(strcmp(name,"vo")) {
 485     if(args && strcmp(args[0],"_oldargs_") == 0)
 486       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 487              "[%s=%s]\n", name,args[1]);
 488     else
 489       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 490              "[%s]\n", name);
 491   }
 492   return vf_open_plugin(filter_list,next,name,args);
 493 }
 494
 495 /**
 496  * \brief adds a filter before the last one (which should be the vo filter).
 497  * \param vf start of the filter chain.
 498  * \param name name of the filter to add.
 499  * \param args argument list for the filter.
 500  * \return pointer to the filter instance that was created.
 501  */
 502 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 503   vf_instance_t *vo, *prev = NULL, *new;
 504   // Find the last filter (should be vf_vo)
 505   for (vo = *vf; vo->next; vo = vo->next)
 506     prev = vo;
 507   new = vf_open_filter(vo, name, args);
 508   if (prev)
 509     prev->next = new;
 510   else
 511     *vf = new;
 512   return new;
 513 }
 514
 515 //============================================================================
 516
 517 unsigned int vf_match_csp(vf_instance_t** vfp,unsigned int* list,unsigned int preferred){
 518     vf_instance_t* vf=*vfp;
 519     unsigned int* p;
 520     unsigned int best=0;
 521     int ret;
 522     if((p=list)) while(*p){
 523         ret=vf->query_format(vf,*p);
 524         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 525         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 526         if(ret&1 && !best) best=*p; // best with conversion
 527         ++p;
 528     }
 529     if(best) return best; // bingo, they have common csp!
 530     // ok, then try with scale:
 531     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 532     vf=vf_open_filter(vf,"scale",NULL);
 533     if(!vf) return 0; // failed to init "scale"
 534     // try the preferred csp first:
 535     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 536     // try the list again, now with "scaler" :
 537     if((p=list)) while(*p){
 538         ret=vf->query_format(vf,*p);
 539         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 540         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 541         if(ret&1 && !best) best=*p; // best with conversion
 542         ++p;
 543     }
 544     if(best) *vfp=vf; // else uninit vf  !FIXME!
 545     return best;
 546 }
 547
 548 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 549     dst->pict_type= src->pict_type;
 550     dst->fields = src->fields;
 551     dst->qscale_type= src->qscale_type;
 552     if(dst->width == src->width && dst->height == src->height){
 553         dst->qstride= src->qstride;
 554         dst->qscale= src->qscale;
 555     }
 556 }
 557 /**
 558  * \brief Video config() function wrapper
 559  *
 560  * Blocks config() calls with different size or format for filters
 561  * with VFCAP_CONSTANT
 562  *
 563  * First call is redirected to vf->config.
 564  *
 565  * In following calls, it verifies that the configuration parameters
 566  * are unchanged, and returns either success or error.
 567  *
 568 */
 569 int vf_config_wrapper(struct vf_instance_s* vf,
 570                     int width, int height, int d_width, int d_height,
 571                     unsigned int flags, unsigned int outfmt)
 572 {
 573     int r;
 574     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 575         if ((vf->fmt.orig_width != width)
 576             || (vf->fmt.orig_height != height)
 577             || (vf->fmt.orig_fmt != outfmt)) {
 578             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_ResolutionDoesntMatch);
 579             return 0;
 580         }
 581         return 1;
 582     }
 583     vf->fmt.have_configured = 1;
 584     vf->fmt.orig_height = height;
 585     vf->fmt.orig_width = width;
 586     vf->fmt.orig_fmt = outfmt;
 587     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 588     if (!r) vf->fmt.have_configured = 0;
 589     return r;
 590 }
 591
 592 int vf_next_config(struct vf_instance_s* vf,
 593         int width, int height, int d_width, int d_height,
 594         unsigned int voflags, unsigned int outfmt){
 595     int miss;
 596     int flags=vf->next->query_format(vf->next,outfmt);
 597     if(!flags){
 598         // hmm. colorspace mismatch!!!
 599         // let's insert the 'scale' filter, it does the job for us:
 600         vf_instance_t* vf2;
 601         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 602         vf2=vf_open_filter(vf->next,"scale",NULL);
 603         if(!vf2) return 0; // shouldn't happen!
 604         vf->next=vf2;
 605         flags=vf->next->query_format(vf->next,outfmt);
 606         if(!flags){
 607             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CannotFindColorspace);
 608             return 0; // FAIL
 609         }
 610     }
 611     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 612     miss=vf->default_reqs - (flags&vf->default_reqs);
 613     if(miss&VFCAP_ACCEPT_STRIDE){
 614         // vf requires stride support but vf->next doesn't support it!
 615         // let's insert the 'expand' filter, it does the job for us:
 616         vf_instance_t* vf2=vf_open_filter(vf->next,"expand",NULL);
 617         if(!vf2) return 0; // shouldn't happen!
 618         vf->next=vf2;
 619     }
 620     vf->next->w = width; vf->next->h = height;
 621     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 622 }
 623
 624 int vf_next_control(struct vf_instance_s* vf, int request, void* data){
 625     return vf->next->control(vf->next,request,data);
 626 }
 627
 628 int vf_next_query_format(struct vf_instance_s* vf, unsigned int fmt){
 629     int flags=vf->next->query_format(vf->next,fmt);
 630     if(flags) flags|=vf->default_caps;
 631     return flags;
 632 }
 633
 634 int vf_next_put_image(struct vf_instance_s* vf,mp_image_t *mpi, double pts){
 635     return vf->next->put_image(vf->next,mpi, pts);
 636 }
 637
 638 void vf_next_draw_slice(struct vf_instance_s* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 639     if (vf->next->draw_slice) {
 640         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 641         return;
 642     }
 643     if (!vf->dmpi) {
 644         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 645         return;
 646     }
 647     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 648         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 649             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 650         return;
 651     }
 652     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 653         w, h, vf->dmpi->stride[0], stride[0]);
 654     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 655         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 656     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 657         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 658 }
 659
 660 //============================================================================
 661
 662 vf_instance_t* append_filters(vf_instance_t* last){
 663   vf_instance_t* vf;
 664   int i;
 665
 666   // -vf take precedence over -vop
 667   if(vf_settings) {
 668     // We want to add them in the 'right order'
 669     for(i = 0 ; vf_settings[i].name ; i++)
 670       /* NOP */;
 671     for(i-- ; i >= 0 ; i--) {
 672       //printf("Open filter %s\n",vf_settings[i].name);
 673       vf = vf_open_filter(last,vf_settings[i].name,vf_settings[i].attribs);
 674       if(vf) last=vf;
 675     }
 676   } else if(vo_plugin_args) {
 677     for(i = 0 ; vo_plugin_args[i].name ; i++) {
 678       vf = vf_open_filter(last,vo_plugin_args[i].name,
 679                           vo_plugin_args[i].attribs);
 680       if(vf) last=vf;
 681     }
 682   }
 683   return last;
 684 }
 685
 686 //============================================================================
 687
 688 void vf_uninit_filter(vf_instance_t* vf){
 689     if(vf->uninit) vf->uninit(vf);
 690     free_mp_image(vf->imgctx.static_images[0]);
 691     free_mp_image(vf->imgctx.static_images[1]);
 692     free_mp_image(vf->imgctx.temp_images[0]);
 693     free_mp_image(vf->imgctx.export_images[0]);
 694     free(vf);
 695 }
 696
 697 void vf_uninit_filter_chain(vf_instance_t* vf){
 698     while(vf){
 699         vf_instance_t* next=vf->next;
 700         vf_uninit_filter(vf);
 701         vf=next;
 702     }
 703 }
 704
 705 void vf_list_plugins(void){
 706     int i=0;
 707     while(filter_list[i]){
 708         mp_msg(MSGT_VFILTER,MSGL_INFO,"\t%-10s: %s\n",filter_list[i]->name,filter_list[i]->info);
 709         i++;
 710     }
 711 }