libmpcodecs/vf.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "config.h"
   6 #if 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 const vf_info_t vf_info_vo;
  27 extern const vf_info_t vf_info_rectangle;
  28 extern const vf_info_t vf_info_bmovl;
  29 extern const vf_info_t vf_info_crop;
  30 extern const vf_info_t vf_info_expand;
  31 extern const vf_info_t vf_info_pp;
  32 extern const vf_info_t vf_info_scale;
  33 extern const vf_info_t vf_info_format;
  34 extern const vf_info_t vf_info_noformat;
  35 extern const vf_info_t vf_info_yuy2;
  36 extern const vf_info_t vf_info_flip;
  37 extern const vf_info_t vf_info_rgb2bgr;
  38 extern const vf_info_t vf_info_rotate;
  39 extern const vf_info_t vf_info_mirror;
  40 extern const vf_info_t vf_info_palette;
  41 extern const vf_info_t vf_info_lavc;
  42 extern const vf_info_t vf_info_zrmjpeg;
  43 extern const vf_info_t vf_info_dvbscale;
  44 extern const vf_info_t vf_info_cropdetect;
  45 extern const vf_info_t vf_info_test;
  46 extern const vf_info_t vf_info_noise;
  47 extern const vf_info_t vf_info_yvu9;
  48 extern const vf_info_t vf_info_lavcdeint;
  49 extern const vf_info_t vf_info_eq;
  50 extern const vf_info_t vf_info_eq2;
  51 extern const vf_info_t vf_info_gradfun;
  52 extern const vf_info_t vf_info_halfpack;
  53 extern const vf_info_t vf_info_dint;
  54 extern const vf_info_t vf_info_1bpp;
  55 extern const vf_info_t vf_info_2xsai;
  56 extern const vf_info_t vf_info_unsharp;
  57 extern const vf_info_t vf_info_swapuv;
  58 extern const vf_info_t vf_info_il;
  59 extern const vf_info_t vf_info_fil;
  60 extern const vf_info_t vf_info_boxblur;
  61 extern const vf_info_t vf_info_sab;
  62 extern const vf_info_t vf_info_smartblur;
  63 extern const vf_info_t vf_info_perspective;
  64 extern const vf_info_t vf_info_down3dright;
  65 extern const vf_info_t vf_info_field;
  66 extern const vf_info_t vf_info_denoise3d;
  67 extern const vf_info_t vf_info_hqdn3d;
  68 extern const vf_info_t vf_info_detc;
  69 extern const vf_info_t vf_info_telecine;
  70 extern const vf_info_t vf_info_tinterlace;
  71 extern const vf_info_t vf_info_tfields;
  72 extern const vf_info_t vf_info_ivtc;
  73 extern const vf_info_t vf_info_ilpack;
  74 extern const vf_info_t vf_info_dsize;
  75 extern const vf_info_t vf_info_decimate;
  76 extern const vf_info_t vf_info_softpulldown;
  77 extern const vf_info_t vf_info_pullup;
  78 extern const vf_info_t vf_info_filmdint;
  79 extern const vf_info_t vf_info_framestep;
  80 extern const vf_info_t vf_info_tile;
  81 extern const vf_info_t vf_info_delogo;
  82 extern const vf_info_t vf_info_remove_logo;
  83 extern const vf_info_t vf_info_hue;
  84 extern const vf_info_t vf_info_spp;
  85 extern const vf_info_t vf_info_uspp;
  86 extern const vf_info_t vf_info_fspp;
  87 extern const vf_info_t vf_info_pp7;
  88 extern const vf_info_t vf_info_yuvcsp;
  89 extern const vf_info_t vf_info_kerndeint;
  90 extern const vf_info_t vf_info_rgbtest;
  91 extern const vf_info_t vf_info_qp;
  92 extern const vf_info_t vf_info_phase;
  93 extern const vf_info_t vf_info_divtc;
  94 extern const vf_info_t vf_info_harddup;
  95 extern const vf_info_t vf_info_softskip;
  96 extern const vf_info_t vf_info_screenshot;
  97 extern const vf_info_t vf_info_ass;
  98 extern const vf_info_t vf_info_mcdeint;
  99 extern const vf_info_t vf_info_yadif;
 100 extern const vf_info_t vf_info_blackframe;
 101 extern const vf_info_t vf_info_geq;
 102 extern const vf_info_t vf_info_ow;
 103 extern const vf_info_t vf_info_tcdump;
 104
 105 // list of available filters:
 106 static const vf_info_t* const filter_list[]={
 107     &vf_info_rectangle,
 108 #ifdef HAVE_POSIX_SELECT
 109     &vf_info_bmovl,
 110 #endif
 111     &vf_info_crop,
 112     &vf_info_expand,
 113 #ifdef CONFIG_LIBPOSTPROC
 114     &vf_info_pp,
 115 #endif
 116     &vf_info_scale,
 117 //    &vf_info_osd,
 118     &vf_info_vo,
 119     &vf_info_format,
 120     &vf_info_noformat,
 121     &vf_info_yuy2,
 122     &vf_info_flip,
 123     &vf_info_rgb2bgr,
 124     &vf_info_rotate,
 125     &vf_info_mirror,
 126     &vf_info_palette,
 127     &vf_info_pp7,
 128 #ifdef CONFIG_LIBAVCODEC
 129     &vf_info_lavc,
 130     &vf_info_lavcdeint,
 131     &vf_info_screenshot,
 132 #endif
 133 #ifdef CONFIG_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_gradfun,
 144     &vf_info_halfpack,
 145     &vf_info_dint,
 146     &vf_info_1bpp,
 147     &vf_info_2xsai,
 148     &vf_info_unsharp,
 149     &vf_info_swapuv,
 150     &vf_info_il,
 151     &vf_info_fil,
 152     &vf_info_boxblur,
 153     &vf_info_sab,
 154     &vf_info_smartblur,
 155     &vf_info_perspective,
 156     &vf_info_down3dright,
 157     &vf_info_field,
 158     &vf_info_denoise3d,
 159     &vf_info_hqdn3d,
 160     &vf_info_detc,
 161     &vf_info_telecine,
 162     &vf_info_tinterlace,
 163     &vf_info_tfields,
 164     &vf_info_ivtc,
 165     &vf_info_ilpack,
 166     &vf_info_dsize,
 167     &vf_info_decimate,
 168     &vf_info_softpulldown,
 169     &vf_info_pullup,
 170     &vf_info_filmdint,
 171     &vf_info_framestep,
 172     &vf_info_tile,
 173     &vf_info_delogo,
 174     &vf_info_remove_logo,
 175     &vf_info_hue,
 176 #ifdef CONFIG_LIBAVCODEC_A
 177     &vf_info_spp,
 178     &vf_info_uspp,
 179     &vf_info_fspp,
 180     &vf_info_qp,
 181     &vf_info_mcdeint,
 182     &vf_info_geq,
 183 #endif
 184     &vf_info_yuvcsp,
 185     &vf_info_kerndeint,
 186     &vf_info_rgbtest,
 187     &vf_info_phase,
 188     &vf_info_divtc,
 189     &vf_info_harddup,
 190     &vf_info_softskip,
 191 #ifdef CONFIG_ASS
 192     &vf_info_ass,
 193 #endif
 194     &vf_info_yadif,
 195     &vf_info_blackframe,
 196     &vf_info_ow,
 197     &vf_info_tcdump,
 198     NULL
 199 };
 200
 201 // For the vf option
 202 const m_obj_list_t vf_obj_list = {
 203   (void**)filter_list,
 204   M_ST_OFF(vf_info_t,name),
 205   M_ST_OFF(vf_info_t,info),
 206   M_ST_OFF(vf_info_t,opts)
 207 };
 208
 209 //============================================================================
 210 // mpi stuff:
 211
 212 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 213     int y;
 214     if(mpi->flags&MP_IMGFLAG_PLANAR){
 215         y0&=~1;h+=h&1;
 216         if(x0==0 && w==mpi->width){
 217             // full width clear:
 218             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 219             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 220             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 221         } else
 222         for(y=y0;y<y0+h;y+=2){
 223             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 224             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 225             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 226             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 227         }
 228         return;
 229     }
 230     // packed:
 231     for(y=y0;y<y0+h;y++){
 232         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 233         if(mpi->flags&MP_IMGFLAG_YUV){
 234             unsigned int* p=(unsigned int*) dst;
 235             int size=(mpi->bpp>>3)*w/4;
 236             int i;
 237 #ifdef WORDS_BIGENDIAN
 238 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 239 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 240 #else
 241 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 242 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 243 #endif
 244             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 245                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 246                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 247             } else {
 248                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 249                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 250             }
 251         } else
 252             memset(dst,0,(mpi->bpp>>3)*w);
 253     }
 254 }
 255
 256 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 257   mp_image_t* mpi=NULL;
 258   int w2;
 259   int number = mp_imgtype >> 16;
 260
 261 #ifdef MP_DEBUG
 262   assert(w == -1 || w >= vf->w);
 263   assert(h == -1 || h >= vf->h);
 264   assert(vf->w > 0);
 265   assert(vf->h > 0);
 266 #endif
 267
 268 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 269
 270   if (w == -1) w = vf->w;
 271   if (h == -1) h = vf->h;
 272
 273   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 274
 275   if(vf->put_image==vf_next_put_image){
 276       // passthru mode, if the filter uses the fallback/default put_image() code
 277       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 278   }
 279
 280   // Note: we should call libvo first to check if it supports direct rendering
 281   // and if not, then fallback to software buffers:
 282   switch(mp_imgtype & 0xff){
 283   case MP_IMGTYPE_EXPORT:
 284     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 285     mpi=vf->imgctx.export_images[0];
 286     break;
 287   case MP_IMGTYPE_STATIC:
 288     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 289     mpi=vf->imgctx.static_images[0];
 290     break;
 291   case MP_IMGTYPE_TEMP:
 292     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 293     mpi=vf->imgctx.temp_images[0];
 294     break;
 295   case MP_IMGTYPE_IPB:
 296     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 297       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 298       mpi=vf->imgctx.temp_images[0];
 299       break;
 300     }
 301   case MP_IMGTYPE_IP:
 302     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 303     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 304     vf->imgctx.static_idx^=1;
 305     break;
 306   case MP_IMGTYPE_NUMBERED:
 307     if (number == -1) {
 308       int i;
 309       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 310         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 311           break;
 312       number = i;
 313     }
 314     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 315     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 316     mpi = vf->imgctx.numbered_images[number];
 317     mpi->number = number;
 318     break;
 319   }
 320   if(mpi){
 321     mpi->type=mp_imgtype;
 322     mpi->w=vf->w; mpi->h=vf->h;
 323     // keep buffer allocation status & color flags only:
 324 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 325     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 326     // accept restrictions & draw_slice flags only:
 327     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK);
 328     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 329     if(mpi->width!=w2 || mpi->height!=h){
 330 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 331         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 332             if(mpi->width<w2 || mpi->height<h){
 333                 // need to re-allocate buffer memory:
 334                 free(mpi->planes[0]);
 335                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 336                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 337             }
 338 //      } else {
 339         } {
 340             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 341             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 342         }
 343     }
 344     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 345     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 346
 347         // check libvo first!
 348         if(vf->get_image) vf->get_image(vf,mpi);
 349
 350         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 351           // non-direct and not yet allocated image. allocate it!
 352           if (!mpi->bpp) { // no way we can allocate this
 353               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 354                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 355               return NULL;
 356           }
 357
 358           // check if codec prefer aligned stride:
 359           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 360               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 361                          mpi->flags&MP_IMGFLAG_YUV) ?
 362                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 363               w2=((w+align)&(~align));
 364               if(mpi->width!=w2){
 365                   // we have to change width... check if we CAN co it:
 366                   int flags=vf->query_format(vf,outfmt); // should not fail
 367                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 368 //                printf("query -> 0x%X    \n",flags);
 369                   if(flags&VFCAP_ACCEPT_STRIDE){
 370                       mpi->width=w2;
 371                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 372                   }
 373               }
 374           }
 375
 376           // IF09 - allocate space for 4. plane delta info - unused
 377           if (mpi->imgfmt == IMGFMT_IF09)
 378           {
 379              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8+
 380                                         mpi->chroma_width*mpi->chroma_height);
 381              /* export delta table */
 382              mpi->planes[3]=mpi->planes[0]+(mpi->width*mpi->height)+2*(mpi->chroma_width*mpi->chroma_height);
 383           }
 384           else
 385              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8);
 386           if(mpi->flags&MP_IMGFLAG_PLANAR){
 387               // YV12/I420/YVU9/IF09. feel free to add other planar formats here...
 388               //if(!mpi->stride[0])
 389               mpi->stride[0]=mpi->width;
 390               //if(!mpi->stride[1])
 391               if(mpi->num_planes > 2){
 392               mpi->stride[1]=mpi->stride[2]=mpi->chroma_width;
 393               if(mpi->flags&MP_IMGFLAG_SWAPPED){
 394                   // I420/IYUV  (Y,U,V)
 395                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 396                   mpi->planes[2]=mpi->planes[1]+mpi->chroma_width*mpi->chroma_height;
 397               } else {
 398                   // YV12,YVU9,IF09  (Y,V,U)
 399                   mpi->planes[2]=mpi->planes[0]+mpi->width*mpi->height;
 400                   mpi->planes[1]=mpi->planes[2]+mpi->chroma_width*mpi->chroma_height;
 401               }
 402               } else {
 403                   // NV12/NV21
 404                   mpi->stride[1]=mpi->chroma_width;
 405                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 406               }
 407           } else {
 408               //if(!mpi->stride[0])
 409               mpi->stride[0]=mpi->width*mpi->bpp/8;
 410           }
 411 //        printf("clearing img!\n");
 412           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 413           mpi->flags|=MP_IMGFLAG_ALLOCATED;
 414         }
 415     }
 416     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 417         if(vf->start_slice) vf->start_slice(vf,mpi);
 418     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 419             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 420                   vf->info->name,
 421                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 422                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 423                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 424                   mpi->width,mpi->height,mpi->bpp,
 425                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 426                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 427                   mpi->bpp*mpi->width*mpi->height/8);
 428             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",
 429                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 430                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 431                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 432             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 433     }
 434
 435   mpi->qscale = NULL;
 436   }
 437   mpi->usage_count++;
 438 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 439 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 440 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 441   return mpi;
 442 }
 443
 444 //============================================================================
 445
 446 // By default vf doesn't accept MPEGPES
 447 static int vf_default_query_format(struct vf_instance* vf, unsigned int fmt){
 448   if(fmt == IMGFMT_MPEGPES) return 0;
 449   return vf_next_query_format(vf,fmt);
 450 }
 451
 452 vf_instance_t* vf_open_plugin(struct MPOpts *opts, const vf_info_t* const* filter_list, vf_instance_t* next, const char *name, char **args){
 453     vf_instance_t* vf;
 454     int i;
 455     for(i=0;;i++){
 456         if(!filter_list[i]){
 457             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Couldn't find video filter '%s'.\n",name);
 458             return NULL; // no such filter!
 459         }
 460         if(!strcmp(filter_list[i]->name,name)) break;
 461     }
 462     vf = calloc(1, sizeof *vf);
 463     vf->opts = opts;
 464     vf->info=filter_list[i];
 465     vf->next=next;
 466     vf->config=vf_next_config;
 467     vf->control=vf_next_control;
 468     vf->query_format=vf_default_query_format;
 469     vf->put_image=vf_next_put_image;
 470     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 471     vf->default_reqs=0;
 472     if(vf->info->opts) { // vf_vo get some special argument
 473       const m_struct_t* st = vf->info->opts;
 474       void* vf_priv = m_struct_alloc(st);
 475       int n;
 476       for(n = 0 ; args && args[2*n] ; n++)
 477         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 478       vf->priv = vf_priv;
 479       args = NULL;
 480     } else // Otherwise we should have the '_oldargs_'
 481       if(args && !strcmp(args[0],"_oldargs_"))
 482         args = (char**)args[1];
 483       else
 484         args = NULL;
 485     if(vf->info->open(vf,(char*)args)>0) return vf; // Success!
 486     free(vf);
 487     mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Couldn't open video filter '%s'.\n",name);
 488     return NULL;
 489 }
 490
 491 vf_instance_t* vf_open_filter(struct MPOpts *opts, vf_instance_t* next, const char *name, char **args){
 492   if(args && strcmp(args[0],"_oldargs_")) {
 493     int i,l = 0;
 494     for(i = 0 ; args && args[2*i] ; i++)
 495       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 496     l += strlen(name);
 497     {
 498       char str[l+1];
 499       char* p = str;
 500       p += sprintf(str,"%s",name);
 501       for(i = 0 ; args && args[2*i] ; i++)
 502         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 503       mp_tmsg(MSGT_VFILTER,MSGL_INFO,"Opening video filter: " "[%s]\n",str);
 504     }
 505   } else if(strcmp(name,"vo")) {
 506     if(args && strcmp(args[0],"_oldargs_") == 0)
 507       mp_tmsg(MSGT_VFILTER,MSGL_INFO,"Opening video filter: "
 508              "[%s=%s]\n", name,args[1]);
 509     else
 510       mp_tmsg(MSGT_VFILTER,MSGL_INFO,"Opening video filter: "
 511              "[%s]\n", name);
 512   }
 513   return vf_open_plugin(opts, filter_list,next,name,args);
 514 }
 515
 516 /**
 517  * \brief adds a filter before the last one (which should be the vo filter).
 518  * \param vf start of the filter chain.
 519  * \param name name of the filter to add.
 520  * \param args argument list for the filter.
 521  * \return pointer to the filter instance that was created.
 522  */
 523 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 524   struct MPOpts *opts = (*vf)->opts;
 525   vf_instance_t *vo, *prev = NULL, *new;
 526   // Find the last filter (should be vf_vo)
 527   for (vo = *vf; vo->next; vo = vo->next)
 528     prev = vo;
 529   new = vf_open_filter(opts, vo, name, args);
 530   if (prev)
 531     prev->next = new;
 532   else
 533     *vf = new;
 534   return new;
 535 }
 536
 537 //============================================================================
 538
 539 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 540     vf_instance_t* vf=*vfp;
 541     struct MPOpts *opts = vf->opts;
 542     const unsigned int* p;
 543     unsigned int best=0;
 544     int ret;
 545     if((p=list)) while(*p){
 546         ret=vf->query_format(vf,*p);
 547         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 548         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 549         if(ret&1 && !best) best=*p; // best with conversion
 550         ++p;
 551     }
 552     if(best) return best; // bingo, they have common csp!
 553     // ok, then try with scale:
 554     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 555     vf=vf_open_filter(opts, vf,"scale",NULL);
 556     if(!vf) return 0; // failed to init "scale"
 557     // try the preferred csp first:
 558     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 559     // try the list again, now with "scaler" :
 560     if((p=list)) while(*p){
 561         ret=vf->query_format(vf,*p);
 562         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 563         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 564         if(ret&1 && !best) best=*p; // best with conversion
 565         ++p;
 566     }
 567     if(best) *vfp=vf; // else uninit vf  !FIXME!
 568     return best;
 569 }
 570
 571 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 572     dst->pict_type= src->pict_type;
 573     dst->fields = src->fields;
 574     dst->qscale_type= src->qscale_type;
 575     if(dst->width == src->width && dst->height == src->height){
 576         dst->qstride= src->qstride;
 577         dst->qscale= src->qscale;
 578     }
 579 }
 580
 581 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 582 {
 583     vf->continue_buffered_image = func;
 584 }
 585
 586 // Output the next buffered image (if any) from the filter chain.
 587 // The queue could be kept as a simple stack/list instead avoiding the
 588 // looping here, but there's currently no good context variable where
 589 // that could be stored so this was easier to implement.
 590
 591 int vf_output_queued_frame(vf_instance_t *vf)
 592 {
 593     while (1) {
 594         int ret;
 595         vf_instance_t *current;
 596         vf_instance_t *last=NULL;
 597         int (*tmp)(vf_instance_t *);
 598         for (current = vf; current; current = current->next)
 599             if (current->continue_buffered_image)
 600                 last = current;
 601         if (!last)
 602             return 0;
 603         tmp = last->continue_buffered_image;
 604         last->continue_buffered_image = NULL;
 605         ret = tmp(last);
 606         if (ret)
 607             return ret;
 608     }
 609 }
 610
 611
 612 /**
 613  * \brief Video config() function wrapper
 614  *
 615  * Blocks config() calls with different size or format for filters
 616  * with VFCAP_CONSTANT
 617  *
 618  * First call is redirected to vf->config.
 619  *
 620  * In following calls, it verifies that the configuration parameters
 621  * are unchanged, and returns either success or error.
 622  *
 623 */
 624 int vf_config_wrapper(struct vf_instance* vf,
 625                     int width, int height, int d_width, int d_height,
 626                     unsigned int flags, unsigned int outfmt)
 627 {
 628     int r;
 629     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 630         if ((vf->fmt.orig_width != width)
 631             || (vf->fmt.orig_height != height)
 632             || (vf->fmt.orig_fmt != outfmt)) {
 633             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"\nNew video file has different resolution or colorspace than the previous one.\n");
 634             return 0;
 635         }
 636         return 1;
 637     }
 638     vf->fmt.have_configured = 1;
 639     vf->fmt.orig_height = height;
 640     vf->fmt.orig_width = width;
 641     vf->fmt.orig_fmt = outfmt;
 642     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 643     if (!r) vf->fmt.have_configured = 0;
 644     return r;
 645 }
 646
 647 int vf_next_config(struct vf_instance* vf,
 648         int width, int height, int d_width, int d_height,
 649         unsigned int voflags, unsigned int outfmt){
 650     struct MPOpts *opts = vf->opts;
 651     int miss;
 652     int flags=vf->next->query_format(vf->next,outfmt);
 653     if(!flags){
 654         // hmm. colorspace mismatch!!!
 655         // let's insert the 'scale' filter, it does the job for us:
 656         vf_instance_t* vf2;
 657         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 658         vf2=vf_open_filter(opts, vf->next,"scale",NULL);
 659         if(!vf2) return 0; // shouldn't happen!
 660         vf->next=vf2;
 661         flags=vf->next->query_format(vf->next,outfmt);
 662         if(!flags){
 663             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Cannot find matching colorspace, even by inserting 'scale' :(\n");
 664             return 0; // FAIL
 665         }
 666     }
 667     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 668     miss=vf->default_reqs - (flags&vf->default_reqs);
 669     if(miss&VFCAP_ACCEPT_STRIDE){
 670         // vf requires stride support but vf->next doesn't support it!
 671         // let's insert the 'expand' filter, it does the job for us:
 672         vf_instance_t* vf2=vf_open_filter(opts, vf->next,"expand",NULL);
 673         if(!vf2) return 0; // shouldn't happen!
 674         vf->next=vf2;
 675     }
 676     vf->next->w = width; vf->next->h = height;
 677     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 678 }
 679
 680 int vf_next_control(struct vf_instance* vf, int request, void* data){
 681     return vf->next->control(vf->next,request,data);
 682 }
 683
 684 int vf_next_query_format(struct vf_instance* vf, unsigned int fmt){
 685     int flags=vf->next->query_format(vf->next,fmt);
 686     if(flags) flags|=vf->default_caps;
 687     return flags;
 688 }
 689
 690 int vf_next_put_image(struct vf_instance* vf,mp_image_t *mpi, double pts){
 691     return vf->next->put_image(vf->next,mpi, pts);
 692 }
 693
 694 void vf_next_draw_slice(struct vf_instance* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 695     if (vf->next->draw_slice) {
 696         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 697         return;
 698     }
 699     if (!vf->dmpi) {
 700         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 701         return;
 702     }
 703     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 704         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 705             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 706         return;
 707     }
 708     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 709         w, h, vf->dmpi->stride[0], stride[0]);
 710     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 711         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 712     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 713         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 714 }
 715
 716 //============================================================================
 717
 718 vf_instance_t *append_filters(vf_instance_t* last,
 719                               struct m_obj_settings *vf_settings)
 720 {
 721   struct MPOpts *opts = last->opts;
 722   vf_instance_t* vf;
 723   int i;
 724
 725   if(vf_settings) {
 726     // We want to add them in the 'right order'
 727     for(i = 0 ; vf_settings[i].name ; i++)
 728       /* NOP */;
 729     for(i-- ; i >= 0 ; i--) {
 730       //printf("Open filter %s\n",vf_settings[i].name);
 731       vf = vf_open_filter(opts, last,vf_settings[i].name,vf_settings[i].attribs);
 732       if(vf) last=vf;
 733     }
 734   }
 735   return last;
 736 }
 737
 738 //============================================================================
 739
 740 void vf_uninit_filter(vf_instance_t* vf){
 741     if(vf->uninit) vf->uninit(vf);
 742     free_mp_image(vf->imgctx.static_images[0]);
 743     free_mp_image(vf->imgctx.static_images[1]);
 744     free_mp_image(vf->imgctx.temp_images[0]);
 745     free_mp_image(vf->imgctx.export_images[0]);
 746     free(vf);
 747 }
 748
 749 void vf_uninit_filter_chain(vf_instance_t* vf){
 750     while(vf){
 751         vf_instance_t* next=vf->next;
 752         vf_uninit_filter(vf);
 753         vf=next;
 754     }
 755 }